Merge branch 'topic/docs-next' into v4l_for_linus
* topic/docs-next: (322 commits) [media] cx23885-cardlist.rst: add a new card [media] doc-rst: add some needed escape codes [media] doc-rst: kapi: use :c:func: instead of :cpp:func doc-rst: kernel-doc: fix a change introduced by mistake [media] v4l2-ioctl.h add debug info for struct v4l2_ioctl_ops [media] dvb_ringbuffer.h: some documentation improvements [media] v4l2-ctrls.h: fully document the header file [media] doc-rst: Fix some typedef ugly warnings [media] doc-rst: reorganize the kAPI v4l2 chapters [media] rename v4l2-framework.rst to v4l2-intro.rst [media] move V4L2 clocks to a separate .rst file [media] v4l2-fh.rst: add cross references and markups [media] v4l2-fh.rst: add fh contents from v4l2-framework.rst [media] v4l2-fh.h: add documentation for it [media] v4l2-event.rst: add cross-references and markups [media] v4l2-event.h: document all functions [media] v4l2-event.rst: add text from v4l2-framework.rst [media] v4l2-framework.rst: remove videobuf quick chapter [media] v4l2-dev: add cross-references and improve markup [media] doc-rst: move v4l2-dev doc to a separate file ...
This commit is contained in:
Mauro Carvalho Chehab
commit
85538b1ad1
|
|
@ -247,64 +247,6 @@ X!Isound/sound_firmware.c
|
|||
-->
|
||||
</chapter>
|
||||
|
||||
<chapter id="mediadev">
|
||||
<title>Media Devices</title>
|
||||
|
||||
<sect1><title>Video2Linux devices</title>
|
||||
!Iinclude/media/tuner.h
|
||||
!Iinclude/media/tuner-types.h
|
||||
!Iinclude/media/tveeprom.h
|
||||
!Iinclude/media/v4l2-async.h
|
||||
!Iinclude/media/v4l2-ctrls.h
|
||||
!Iinclude/media/v4l2-dv-timings.h
|
||||
!Iinclude/media/v4l2-event.h
|
||||
!Iinclude/media/v4l2-flash-led-class.h
|
||||
!Iinclude/media/v4l2-mc.h
|
||||
!Iinclude/media/v4l2-mediabus.h
|
||||
!Iinclude/media/v4l2-mem2mem.h
|
||||
!Iinclude/media/v4l2-of.h
|
||||
!Iinclude/media/v4l2-rect.h
|
||||
!Iinclude/media/v4l2-subdev.h
|
||||
!Iinclude/media/videobuf2-core.h
|
||||
!Iinclude/media/videobuf2-v4l2.h
|
||||
!Iinclude/media/videobuf2-memops.h
|
||||
</sect1>
|
||||
<sect1><title>Digital TV (DVB) devices</title>
|
||||
<sect1><title>Digital TV Common functions</title>
|
||||
!Idrivers/media/dvb-core/dvb_math.h
|
||||
!Idrivers/media/dvb-core/dvb_ringbuffer.h
|
||||
!Idrivers/media/dvb-core/dvbdev.h
|
||||
</sect1>
|
||||
<sect1><title>Digital TV Frontend kABI</title>
|
||||
!Pdrivers/media/dvb-core/dvb_frontend.h Digital TV Frontend
|
||||
!Idrivers/media/dvb-core/dvb_frontend.h
|
||||
</sect1>
|
||||
<sect1><title>Digital TV Demux kABI</title>
|
||||
!Pdrivers/media/dvb-core/demux.h Digital TV Demux
|
||||
<sect1><title>Demux Callback API</title>
|
||||
!Pdrivers/media/dvb-core/demux.h Demux Callback
|
||||
</sect1>
|
||||
!Idrivers/media/dvb-core/demux.h
|
||||
</sect1>
|
||||
<sect1><title>Digital TV Conditional Access kABI</title>
|
||||
!Idrivers/media/dvb-core/dvb_ca_en50221.h
|
||||
</sect1>
|
||||
</sect1>
|
||||
<sect1><title>Remote Controller devices</title>
|
||||
!Iinclude/media/rc-core.h
|
||||
!Iinclude/media/lirc_dev.h
|
||||
</sect1>
|
||||
<sect1><title>Media Controller devices</title>
|
||||
!Pinclude/media/media-device.h Media Controller
|
||||
!Iinclude/media/media-device.h
|
||||
!Iinclude/media/media-devnode.h
|
||||
!Iinclude/media/media-entity.h
|
||||
</sect1>
|
||||
<sect1><title>Consumer Electronics Control devices</title>
|
||||
!Iinclude/media/cec-edid.h
|
||||
</sect1>
|
||||
|
||||
</chapter>
|
||||
|
||||
<chapter id="uart16x50">
|
||||
<title>16x50 UART Driver</title>
|
||||
|
|
|
|||
|
|
@ -526,7 +526,7 @@
|
|||
|
||||
<para>
|
||||
You may extract a single document from such a collection, and
|
||||
dispbibute it individually under this License, provided you
|
||||
distribute it individually under this License, provided you
|
||||
insert a copy of this License into the extracted document, and
|
||||
follow this License in all other respects regarding verbatim
|
||||
copying of that document.
|
||||
|
|
|
|||
|
|
@ -114,7 +114,7 @@ on working with the default settings initially.</para>
|
|||
<para>Some receiver have maximum resolution which is defined by internal
|
||||
sample rate or data format limitations. E.g. it's common that signals can
|
||||
only be reported in 50 microsecond steps. This integer value is used by
|
||||
lircd to automatically adjust the aeps tolerance value in the lircd
|
||||
lircd to automatically adjust the steps tolerance value in the lircd
|
||||
config file.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
|
|
|||
|
|
@ -38,9 +38,10 @@ ALLSPHINXOPTS = -D version=$(KERNELVERSION) -D release=$(KERNELRELEASE) -d $(B
|
|||
I18NSPHINXOPTS = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
|
||||
|
||||
quiet_cmd_sphinx = SPHINX $@
|
||||
cmd_sphinx = $(SPHINXBUILD) -b $2 $(ALLSPHINXOPTS) $(BUILDDIR)/$2
|
||||
cmd_sphinx = BUILDDIR=$(BUILDDIR) $(SPHINXBUILD) -b $2 $(ALLSPHINXOPTS) $(BUILDDIR)/$2
|
||||
|
||||
htmldocs:
|
||||
$(MAKE) BUILDDIR=$(BUILDDIR) -f $(srctree)/Documentation/media/Makefile $@
|
||||
$(call cmd,sphinx,html)
|
||||
|
||||
pdfdocs:
|
||||
|
|
|
|||
|
|
@ -28,7 +28,7 @@ sys.path.insert(0, os.path.abspath('sphinx'))
|
|||
# Add any Sphinx extension module names here, as strings. They can be
|
||||
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
|
||||
# ones.
|
||||
extensions = ['kernel-doc', 'rstFlatTable']
|
||||
extensions = ['kernel-doc', 'rstFlatTable', 'kernel_include']
|
||||
|
||||
# Gracefully handle missing rst2pdf.
|
||||
try:
|
||||
|
|
@ -176,7 +176,14 @@ except ImportError:
|
|||
# Add any paths that contain custom static files (such as style sheets) here,
|
||||
# relative to this directory. They are copied after the builtin static files,
|
||||
# so a file named "default.css" will overwrite the builtin "default.css".
|
||||
#html_static_path = ['_static']
|
||||
|
||||
html_static_path = ['sphinx-static']
|
||||
|
||||
html_context = {
|
||||
'css_files': [
|
||||
'_static/theme_overrides.css',
|
||||
],
|
||||
}
|
||||
|
||||
# Add any extra paths that contain custom files (such as robots.txt or
|
||||
# .htaccess) here, relative to this directory. These files are copied
|
||||
|
|
@ -404,7 +411,7 @@ epub_exclude_files = ['search.html']
|
|||
# multiple PDF files here actually tries to get the cross-referencing right
|
||||
# *between* PDF files.
|
||||
pdf_documents = [
|
||||
('index', u'Kernel', u'Kernel', u'J. Random Bozo'),
|
||||
('kernel-documentation', u'Kernel', u'Kernel', u'J. Random Bozo'),
|
||||
]
|
||||
|
||||
# kernel-doc extension configuration for running Sphinx directly (e.g. by Read
|
||||
|
|
|
|||
|
|
@ -1,232 +0,0 @@
|
|||
Documentation for dvb-usb-framework module and its devices
|
||||
|
||||
Idea behind the dvb-usb-framework
|
||||
=================================
|
||||
|
||||
In March 2005 I got the new Twinhan USB2.0 DVB-T device. They provided specs and a firmware.
|
||||
|
||||
Quite keen I wanted to put the driver (with some quirks of course) into dibusb.
|
||||
After reading some specs and doing some USB snooping, it realized, that the
|
||||
dibusb-driver would be a complete mess afterwards. So I decided to do it in a
|
||||
different way: With the help of a dvb-usb-framework.
|
||||
|
||||
The framework provides generic functions (mostly kernel API calls), such as:
|
||||
|
||||
- Transport Stream URB handling in conjunction with dvb-demux-feed-control
|
||||
(bulk and isoc are supported)
|
||||
- registering the device for the DVB-API
|
||||
- registering an I2C-adapter if applicable
|
||||
- remote-control/input-device handling
|
||||
- firmware requesting and loading (currently just for the Cypress USB
|
||||
controllers)
|
||||
- other functions/methods which can be shared by several drivers (such as
|
||||
functions for bulk-control-commands)
|
||||
- TODO: a I2C-chunker. It creates device-specific chunks of register-accesses
|
||||
depending on length of a register and the number of values that can be
|
||||
multi-written and multi-read.
|
||||
|
||||
The source code of the particular DVB USB devices does just the communication
|
||||
with the device via the bus. The connection between the DVB-API-functionality
|
||||
is done via callbacks, assigned in a static device-description (struct
|
||||
dvb_usb_device) each device-driver has to have.
|
||||
|
||||
For an example have a look in drivers/media/usb/dvb-usb/vp7045*.
|
||||
|
||||
Objective is to migrate all the usb-devices (dibusb, cinergyT2, maybe the
|
||||
ttusb; flexcop-usb already benefits from the generic flexcop-device) to use
|
||||
the dvb-usb-lib.
|
||||
|
||||
TODO: dynamic enabling and disabling of the pid-filter in regard to number of
|
||||
feeds requested.
|
||||
|
||||
Supported devices
|
||||
========================
|
||||
|
||||
See the LinuxTV DVB Wiki at www.linuxtv.org for a complete list of
|
||||
cards/drivers/firmwares:
|
||||
|
||||
https://linuxtv.org/wiki/index.php/DVB_USB
|
||||
|
||||
0. History & News:
|
||||
2005-06-30 - added support for WideView WT-220U (Thanks to Steve Chang)
|
||||
2005-05-30 - added basic isochronous support to the dvb-usb-framework
|
||||
added support for Conexant Hybrid reference design and Nebula DigiTV USB
|
||||
2005-04-17 - all dibusb devices ported to make use of the dvb-usb-framework
|
||||
2005-04-02 - re-enabled and improved remote control code.
|
||||
2005-03-31 - ported the Yakumo/Hama/Typhoon DVB-T USB2.0 device to dvb-usb.
|
||||
2005-03-30 - first commit of the dvb-usb-module based on the dibusb-source. First device is a new driver for the
|
||||
TwinhanDTV Alpha / MagicBox II USB2.0-only DVB-T device.
|
||||
|
||||
(change from dvb-dibusb to dvb-usb)
|
||||
2005-03-28 - added support for the AVerMedia AverTV DVB-T USB2.0 device (Thanks to Glen Harris and Jiun-Kuei Jung, AVerMedia)
|
||||
2005-03-14 - added support for the Typhoon/Yakumo/HAMA DVB-T mobile USB2.0
|
||||
2005-02-11 - added support for the KWorld/ADSTech Instant DVB-T USB2.0. Thanks a lot to Joachim von Caron
|
||||
2005-02-02 - added support for the Hauppauge Win-TV Nova-T USB2
|
||||
2005-01-31 - distorted streaming is gone for USB1.1 devices
|
||||
2005-01-13 - moved the mirrored pid_filter_table back to dvb-dibusb
|
||||
- first almost working version for HanfTek UMT-010
|
||||
- found out, that Yakumo/HAMA/Typhoon are predecessors of the HanfTek UMT-010
|
||||
2005-01-10 - refactoring completed, now everything is very delightful
|
||||
- tuner quirks for some weird devices (Artec T1 AN2235 device has sometimes a
|
||||
Panasonic Tuner assembled). Tunerprobing implemented. Thanks a lot to Gunnar Wittich.
|
||||
2004-12-29 - after several days of struggling around bug of no returning URBs fixed.
|
||||
2004-12-26 - refactored the dibusb-driver, splitted into separate files
|
||||
- i2c-probing enabled
|
||||
2004-12-06 - possibility for demod i2c-address probing
|
||||
- new usb IDs (Compro, Artec)
|
||||
2004-11-23 - merged changes from DiB3000MC_ver2.1
|
||||
- revised the debugging
|
||||
- possibility to deliver the complete TS for USB2.0
|
||||
2004-11-21 - first working version of the dib3000mc/p frontend driver.
|
||||
2004-11-12 - added additional remote control keys. Thanks to Uwe Hanke.
|
||||
2004-11-07 - added remote control support. Thanks to David Matthews.
|
||||
2004-11-05 - added support for a new devices (Grandtec/Avermedia/Artec)
|
||||
- merged my changes (for dib3000mb/dibusb) to the FE_REFACTORING, because it became HEAD
|
||||
- moved transfer control (pid filter, fifo control) from usb driver to frontend, it seems
|
||||
better settled there (added xfer_ops-struct)
|
||||
- created a common files for frontends (mc/p/mb)
|
||||
2004-09-28 - added support for a new device (Unknown, vendor ID is Hyper-Paltek)
|
||||
2004-09-20 - added support for a new device (Compro DVB-U2000), thanks
|
||||
to Amaury Demol for reporting
|
||||
- changed usb TS transfer method (several urbs, stopping transfer
|
||||
before setting a new pid)
|
||||
2004-09-13 - added support for a new device (Artec T1 USB TVBOX), thanks
|
||||
to Christian Motschke for reporting
|
||||
2004-09-05 - released the dibusb device and dib3000mb-frontend driver
|
||||
|
||||
(old news for vp7041.c)
|
||||
2004-07-15 - found out, by accident, that the device has a TUA6010XS for
|
||||
PLL
|
||||
2004-07-12 - figured out, that the driver should also work with the
|
||||
CTS Portable (Chinese Television System)
|
||||
2004-07-08 - firmware-extraction-2.422-problem solved, driver is now working
|
||||
properly with firmware extracted from 2.422
|
||||
- #if for 2.6.4 (dvb), compile issue
|
||||
- changed firmware handling, see vp7041.txt sec 1.1
|
||||
2004-07-02 - some tuner modifications, v0.1, cleanups, first public
|
||||
2004-06-28 - now using the dvb_dmx_swfilter_packets, everything
|
||||
runs fine now
|
||||
2004-06-27 - able to watch and switching channels (pre-alpha)
|
||||
- no section filtering yet
|
||||
2004-06-06 - first TS received, but kernel oops :/
|
||||
2004-05-14 - firmware loader is working
|
||||
2004-05-11 - start writing the driver
|
||||
|
||||
1. How to use?
|
||||
1.1. Firmware
|
||||
|
||||
Most of the USB drivers need to download a firmware to the device before start
|
||||
working.
|
||||
|
||||
Have a look at the Wikipage for the DVB-USB-drivers to find out, which firmware
|
||||
you need for your device:
|
||||
|
||||
https://linuxtv.org/wiki/index.php/DVB_USB
|
||||
|
||||
1.2. Compiling
|
||||
|
||||
Since the driver is in the linux kernel, activating the driver in
|
||||
your favorite config-environment should sufficient. I recommend
|
||||
to compile the driver as module. Hotplug does the rest.
|
||||
|
||||
If you use dvb-kernel enter the build-2.6 directory run 'make' and 'insmod.sh
|
||||
load' afterwards.
|
||||
|
||||
1.3. Loading the drivers
|
||||
|
||||
Hotplug is able to load the driver, when it is needed (because you plugged
|
||||
in the device).
|
||||
|
||||
If you want to enable debug output, you have to load the driver manually and
|
||||
from within the dvb-kernel cvs repository.
|
||||
|
||||
first have a look, which debug level are available:
|
||||
|
||||
modinfo dvb-usb
|
||||
modinfo dvb-usb-vp7045
|
||||
etc.
|
||||
|
||||
modprobe dvb-usb debug=<level>
|
||||
modprobe dvb-usb-vp7045 debug=<level>
|
||||
etc.
|
||||
|
||||
should do the trick.
|
||||
|
||||
When the driver is loaded successfully, the firmware file was in
|
||||
the right place and the device is connected, the "Power"-LED should be
|
||||
turned on.
|
||||
|
||||
At this point you should be able to start a dvb-capable application. I'm use
|
||||
(t|s)zap, mplayer and dvbscan to test the basics. VDR-xine provides the
|
||||
long-term test scenario.
|
||||
|
||||
2. Known problems and bugs
|
||||
|
||||
- Don't remove the USB device while running an DVB application, your system
|
||||
will go crazy or die most likely.
|
||||
|
||||
2.1. Adding support for devices
|
||||
|
||||
TODO
|
||||
|
||||
2.2. USB1.1 Bandwidth limitation
|
||||
|
||||
A lot of the currently supported devices are USB1.1 and thus they have a
|
||||
maximum bandwidth of about 5-6 MBit/s when connected to a USB2.0 hub.
|
||||
This is not enough for receiving the complete transport stream of a
|
||||
DVB-T channel (which is about 16 MBit/s). Normally this is not a
|
||||
problem, if you only want to watch TV (this does not apply for HDTV),
|
||||
but watching a channel while recording another channel on the same
|
||||
frequency simply does not work very well. This applies to all USB1.1
|
||||
DVB-T devices, not just the dvb-usb-devices)
|
||||
|
||||
The bug, where the TS is distorted by a heavy usage of the device is gone
|
||||
definitely. All dvb-usb-devices I was using (Twinhan, Kworld, DiBcom) are
|
||||
working like charm now with VDR. Sometimes I even was able to record a channel
|
||||
and watch another one.
|
||||
|
||||
2.3. Comments
|
||||
|
||||
Patches, comments and suggestions are very very welcome.
|
||||
|
||||
3. Acknowledgements
|
||||
Amaury Demol (Amaury.Demol@parrot.com) and Francois Kanounnikoff from DiBcom for
|
||||
providing specs, code and help, on which the dvb-dibusb, dib3000mb and
|
||||
dib3000mc are based.
|
||||
|
||||
David Matthews for identifying a new device type (Artec T1 with AN2235)
|
||||
and for extending dibusb with remote control event handling. Thank you.
|
||||
|
||||
Alex Woods for frequently answering question about usb and dvb
|
||||
stuff, a big thank you.
|
||||
|
||||
Bernd Wagner for helping with huge bug reports and discussions.
|
||||
|
||||
Gunnar Wittich and Joachim von Caron for their trust for providing
|
||||
root-shells on their machines to implement support for new devices.
|
||||
|
||||
Allan Third and Michael Hutchinson for their help to write the Nebula
|
||||
digitv-driver.
|
||||
|
||||
Glen Harris for bringing up, that there is a new dibusb-device and Jiun-Kuei
|
||||
Jung from AVerMedia who kindly provided a special firmware to get the device
|
||||
up and running in Linux.
|
||||
|
||||
Jennifer Chen, Jeff and Jack from Twinhan for kindly supporting by
|
||||
writing the vp7045-driver.
|
||||
|
||||
Steve Chang from WideView for providing information for new devices and
|
||||
firmware files.
|
||||
|
||||
Michael Paxton for submitting remote control keymaps.
|
||||
|
||||
Some guys on the linux-dvb mailing list for encouraging me.
|
||||
|
||||
Peter Schildmann >peter.schildmann-nospam-at-web.de< for his
|
||||
user-level firmware loader, which saves a lot of time
|
||||
(when writing the vp7041 driver)
|
||||
|
||||
Ulf Hermenau for helping me out with traditional chinese.
|
||||
|
||||
André Smoktun and Christian Frömmel for supporting me with
|
||||
hardware and listening to my problems very patiently.
|
||||
|
|
@ -1,301 +0,0 @@
|
|||
HOWTO: Get An Avermedia DVB-T working under Linux
|
||||
______________________________________________
|
||||
|
||||
Table of Contents
|
||||
Assumptions and Introduction
|
||||
The Avermedia DVB-T
|
||||
Getting the card going
|
||||
Receiving DVB-T in Australia
|
||||
Known Limitations
|
||||
Further Update
|
||||
|
||||
Assumptions and Introduction
|
||||
|
||||
It is assumed that the reader understands the basic structure
|
||||
of the Linux Kernel DVB drivers and the general principles of
|
||||
Digital TV.
|
||||
|
||||
One significant difference between Digital TV and Analogue TV
|
||||
that the unwary (like myself) should consider is that,
|
||||
although the component structure of budget DVB-T cards are
|
||||
substantially similar to Analogue TV cards, they function in
|
||||
substantially different ways.
|
||||
|
||||
The purpose of an Analogue TV is to receive and display an
|
||||
Analogue Television signal. An Analogue TV signal (otherwise
|
||||
known as composite video) is an analogue encoding of a
|
||||
sequence of image frames (25 per second) rasterised using an
|
||||
interlacing technique. Interlacing takes two fields to
|
||||
represent one frame. Computers today are at their best when
|
||||
dealing with digital signals, not analogue signals and a
|
||||
composite video signal is about as far removed from a digital
|
||||
data stream as you can get. Therefore, an Analogue TV card for
|
||||
a PC has the following purpose:
|
||||
|
||||
* Tune the receiver to receive a broadcast signal
|
||||
* demodulate the broadcast signal
|
||||
* demultiplex the analogue video signal and analogue audio
|
||||
signal (note some countries employ a digital audio signal
|
||||
embedded within the modulated composite analogue signal -
|
||||
NICAM.)
|
||||
* digitize the analogue video signal and make the resulting
|
||||
datastream available to the data bus.
|
||||
|
||||
The digital datastream from an Analogue TV card is generated
|
||||
by circuitry on the card and is often presented uncompressed.
|
||||
For a PAL TV signal encoded at a resolution of 768x576 24-bit
|
||||
color pixels over 25 frames per second - a fair amount of data
|
||||
is generated and must be processed by the PC before it can be
|
||||
displayed on the video monitor screen. Some Analogue TV cards
|
||||
for PCs have onboard MPEG2 encoders which permit the raw
|
||||
digital data stream to be presented to the PC in an encoded
|
||||
and compressed form - similar to the form that is used in
|
||||
Digital TV.
|
||||
|
||||
The purpose of a simple budget digital TV card (DVB-T,C or S)
|
||||
is to simply:
|
||||
|
||||
* Tune the received to receive a broadcast signal.
|
||||
* Extract the encoded digital datastream from the broadcast
|
||||
signal.
|
||||
* Make the encoded digital datastream (MPEG2) available to
|
||||
the data bus.
|
||||
|
||||
The significant difference between the two is that the tuner
|
||||
on the analogue TV card spits out an Analogue signal, whereas
|
||||
the tuner on the digital TV card spits out a compressed
|
||||
encoded digital datastream. As the signal is already
|
||||
digitised, it is trivial to pass this datastream to the PC
|
||||
databus with minimal additional processing and then extract
|
||||
the digital video and audio datastreams passing them to the
|
||||
appropriate software or hardware for decoding and viewing.
|
||||
_________________________________________________________
|
||||
|
||||
The Avermedia DVB-T
|
||||
|
||||
The Avermedia DVB-T is a budget PCI DVB card. It has 3 inputs:
|
||||
|
||||
* RF Tuner Input
|
||||
* Composite Video Input (RCA Jack)
|
||||
* SVIDEO Input (Mini-DIN)
|
||||
|
||||
The RF Tuner Input is the input to the tuner module of the
|
||||
card. The Tuner is otherwise known as the "Frontend" . The
|
||||
Frontend of the Avermedia DVB-T is a Microtune 7202D. A timely
|
||||
post to the linux-dvb mailing list ascertained that the
|
||||
Microtune 7202D is supported by the sp887x driver which is
|
||||
found in the dvb-hw CVS module.
|
||||
|
||||
The DVB-T card is based around the BT878 chip which is a very
|
||||
common multimedia bridge and often found on Analogue TV cards.
|
||||
There is no on-board MPEG2 decoder, which means that all MPEG2
|
||||
decoding must be done in software, or if you have one, on an
|
||||
MPEG2 hardware decoding card or chipset.
|
||||
_________________________________________________________
|
||||
|
||||
Getting the card going
|
||||
|
||||
In order to fire up the card, it is necessary to load a number
|
||||
of modules from the DVB driver set. Prior to this it will have
|
||||
been necessary to download these drivers from the linuxtv CVS
|
||||
server and compile them successfully.
|
||||
|
||||
Depending on the card's feature set, the Device Driver API for
|
||||
DVB under Linux will expose some of the following device files
|
||||
in the /dev tree:
|
||||
|
||||
* /dev/dvb/adapter0/audio0
|
||||
* /dev/dvb/adapter0/ca0
|
||||
* /dev/dvb/adapter0/demux0
|
||||
* /dev/dvb/adapter0/dvr0
|
||||
* /dev/dvb/adapter0/frontend0
|
||||
* /dev/dvb/adapter0/net0
|
||||
* /dev/dvb/adapter0/osd0
|
||||
* /dev/dvb/adapter0/video0
|
||||
|
||||
The primary device nodes that we are interested in (at this
|
||||
stage) for the Avermedia DVB-T are:
|
||||
|
||||
* /dev/dvb/adapter0/dvr0
|
||||
* /dev/dvb/adapter0/frontend0
|
||||
|
||||
The dvr0 device node is used to read the MPEG2 Data Stream and
|
||||
the frontend0 node is used to tune the frontend tuner module.
|
||||
|
||||
At this stage, it has not been able to ascertain the
|
||||
functionality of the remaining device nodes in respect of the
|
||||
Avermedia DVBT. However, full functionality in respect of
|
||||
tuning, receiving and supplying the MPEG2 data stream is
|
||||
possible with the currently available versions of the driver.
|
||||
It may be possible that additional functionality is available
|
||||
from the card (i.e. viewing the additional analogue inputs
|
||||
that the card presents), but this has not been tested yet. If
|
||||
I get around to this, I'll update the document with whatever I
|
||||
find.
|
||||
|
||||
To power up the card, load the following modules in the
|
||||
following order:
|
||||
|
||||
* modprobe bttv (normally loaded automatically)
|
||||
* modprobe dvb-bt8xx (or place dvb-bt8xx in /etc/modules)
|
||||
|
||||
Insertion of these modules into the running kernel will
|
||||
activate the appropriate DVB device nodes. It is then possible
|
||||
to start accessing the card with utilities such as scan, tzap,
|
||||
dvbstream etc.
|
||||
|
||||
The frontend module sp887x.o, requires an external firmware.
|
||||
Please use the command "get_dvb_firmware sp887x" to download
|
||||
it. Then copy it to /usr/lib/hotplug/firmware or /lib/firmware/
|
||||
(depending on configuration of firmware hotplug).
|
||||
|
||||
Receiving DVB-T in Australia
|
||||
|
||||
I have no experience of DVB-T in other countries other than
|
||||
Australia, so I will attempt to explain how it works here in
|
||||
Melbourne and how this affects the configuration of the DVB-T
|
||||
card.
|
||||
|
||||
The Digital Broadcasting Australia website has a Reception
|
||||
locatortool which provides information on transponder channels
|
||||
and frequencies. My local transmitter happens to be Mount
|
||||
Dandenong.
|
||||
|
||||
The frequencies broadcast by Mount Dandenong are:
|
||||
|
||||
Table 1. Transponder Frequencies Mount Dandenong, Vic, Aus.
|
||||
Broadcaster Channel Frequency
|
||||
ABC VHF 12 226.5 MHz
|
||||
TEN VHF 11 219.5 MHz
|
||||
NINE VHF 8 191.625 MHz
|
||||
SEVEN VHF 6 177.5 MHz
|
||||
SBS UHF 29 536.5 MHz
|
||||
|
||||
The Scan utility has a set of compiled-in defaults for various
|
||||
countries and regions, but if they do not suit, or if you have
|
||||
a pre-compiled scan binary, you can specify a data file on the
|
||||
command line which contains the transponder frequencies. Here
|
||||
is a sample file for the above channel transponders:
|
||||
# Data file for DVB scan program
|
||||
#
|
||||
# C Frequency SymbolRate FEC QAM
|
||||
# S Frequency Polarisation SymbolRate FEC
|
||||
# T Frequency Bandwidth FEC FEC2 QAM Mode Guard Hier
|
||||
T 226500000 7MHz 2/3 NONE QAM64 8k 1/8 NONE
|
||||
T 191625000 7MHz 2/3 NONE QAM64 8k 1/8 NONE
|
||||
T 219500000 7MHz 2/3 NONE QAM64 8k 1/8 NONE
|
||||
T 177500000 7MHz 2/3 NONE QAM64 8k 1/8 NONE
|
||||
T 536500000 7MHz 2/3 NONE QAM64 8k 1/8 NONE
|
||||
|
||||
The defaults for the transponder frequency and other
|
||||
modulation parameters were obtained from www.dba.org.au.
|
||||
|
||||
When Scan runs, it will output channels.conf information for
|
||||
any channel's transponders which the card's frontend can lock
|
||||
onto. (i.e. any whose signal is strong enough at your
|
||||
antenna).
|
||||
|
||||
Here's my channels.conf file for anyone who's interested:
|
||||
ABC HDTV:226500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:QAM_64
|
||||
:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:2307:0:560
|
||||
ABC TV Melbourne:226500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_
|
||||
4:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:65
|
||||
0:561
|
||||
ABC TV 2:226500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:QAM_64
|
||||
:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:562
|
||||
ABC TV 3:226500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:QAM_64
|
||||
:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:563
|
||||
ABC TV 4:226500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:QAM_64
|
||||
:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:564
|
||||
ABC DiG Radio:226500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:Q
|
||||
AM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:0:2311:56
|
||||
6
|
||||
TEN Digital:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM
|
||||
_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:158
|
||||
5
|
||||
TEN Digital 1:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:Q
|
||||
AM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:1
|
||||
586
|
||||
TEN Digital 2:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:Q
|
||||
AM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:1
|
||||
587
|
||||
TEN Digital 3:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:Q
|
||||
AM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:1
|
||||
588
|
||||
TEN Digital:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM
|
||||
_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:158
|
||||
9
|
||||
TEN Digital 4:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:Q
|
||||
AM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:1
|
||||
590
|
||||
TEN Digital:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM
|
||||
_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:159
|
||||
1
|
||||
TEN HD:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:T
|
||||
RANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:514:0:1592
|
||||
TEN Digital:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM
|
||||
_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:159
|
||||
3
|
||||
Nine Digital:191625000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QA
|
||||
M_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:513:660:10
|
||||
72
|
||||
Nine Digital HD:191625000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2
|
||||
:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:0:1
|
||||
073
|
||||
Nine Guide:191625000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_
|
||||
64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:514:670:1074
|
||||
7 Digital:177500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_6
|
||||
4:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:769:770:1328
|
||||
7 Digital 1:177500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM
|
||||
_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:769:770:1329
|
||||
7 Digital 2:177500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM
|
||||
_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:769:770:1330
|
||||
7 Digital 3:177500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM
|
||||
_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:769:770:1331
|
||||
7 HD Digital:177500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QA
|
||||
M_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:833:834:133
|
||||
2
|
||||
7 Program Guide:177500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3
|
||||
:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:865:866:
|
||||
1334
|
||||
SBS HD:536500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:T
|
||||
RANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:102:103:784
|
||||
SBS DIGITAL 1:536500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:Q
|
||||
AM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:161:81:785
|
||||
SBS DIGITAL 2:536500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:Q
|
||||
AM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:162:83:786
|
||||
SBS EPG:536500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:
|
||||
TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:163:85:787
|
||||
SBS RADIO 1:536500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM
|
||||
_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:0:201:798
|
||||
SBS RADIO 2:536500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM
|
||||
_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:0:202:799
|
||||
_________________________________________________________
|
||||
|
||||
Known Limitations
|
||||
|
||||
At present I can say with confidence that the frontend tunes
|
||||
via /dev/dvb/adapter{x}/frontend0 and supplies an MPEG2 stream
|
||||
via /dev/dvb/adapter{x}/dvr0. I have not tested the
|
||||
functionality of any other part of the card yet. I will do so
|
||||
over time and update this document.
|
||||
|
||||
There are some limitations in the i2c layer due to a returned
|
||||
error message inconsistency. Although this generates errors in
|
||||
dmesg and the system logs, it does not appear to affect the
|
||||
ability of the frontend to function correctly.
|
||||
_________________________________________________________
|
||||
|
||||
Further Update
|
||||
|
||||
dvbstream and VideoLAN Client on windows works a treat with
|
||||
DVB, in fact this is currently serving as my main way of
|
||||
viewing DVB-T at the moment. Additionally, VLC is happily
|
||||
decoding HDTV signals, although the PC is dropping the odd
|
||||
frame here and there - I assume due to processing capability -
|
||||
as all the decoding is being done under windows in software.
|
||||
|
||||
Many thanks to Nigel Pearson for the updates to this document
|
||||
since the recent revision of the driver.
|
||||
|
||||
February 14th 2006
|
||||
|
|
@ -1,98 +0,0 @@
|
|||
How to get the bt8xx cards working
|
||||
==================================
|
||||
|
||||
1) General information
|
||||
======================
|
||||
|
||||
This class of cards has a bt878a as the PCI interface, and require the bttv driver
|
||||
for accessing the i2c bus and the gpio pins of the bt8xx chipset.
|
||||
Please see Documentation/dvb/cards.txt => o Cards based on the Conexant Bt8xx PCI bridge:
|
||||
|
||||
Compiling kernel please enable:
|
||||
a.)"Device drivers" => "Multimedia devices" => "Video For Linux" => "Enable Video for Linux API 1 (DEPRECATED)"
|
||||
b.)"Device drivers" => "Multimedia devices" => "Video For Linux" => "Video Capture Adapters" => "BT848 Video For Linux"
|
||||
c.)"Device drivers" => "Multimedia devices" => "Digital Video Broadcasting Devices" => "DVB for Linux" "DVB Core Support" "Bt8xx based PCI Cards"
|
||||
|
||||
Please use the following options with care as deselection of drivers which are in fact necessary
|
||||
may result in DVB devices that cannot be tuned due to lack of driver support:
|
||||
You can save RAM by deselecting every frontend module that your DVB card does not need.
|
||||
|
||||
First please remove the static dependency of DVB card drivers on all frontend modules for all possible card variants by enabling:
|
||||
d.) "Device drivers" => "Multimedia devices" => "Digital Video Broadcasting Devices"
|
||||
=> "DVB for Linux" "DVB Core Support" "Load and attach frontend modules as needed"
|
||||
|
||||
If you know the frontend driver that your card needs please enable:
|
||||
e.)"Device drivers" => "Multimedia devices" => "Digital Video Broadcasting Devices"
|
||||
=> "DVB for Linux" "DVB Core Support" "Customise DVB Frontends" => "Customise the frontend modules to build"
|
||||
Then please select your card-specific frontend module.
|
||||
|
||||
2) Loading Modules
|
||||
==================
|
||||
|
||||
Regular case: If the bttv driver detects a bt8xx-based DVB card, all frontend and backend modules will be loaded automatically.
|
||||
Exceptions are:
|
||||
- Old TwinHan DST cards or clones with or without CA slot and not containing an Eeprom.
|
||||
People running udev please see Documentation/dvb/udev.txt.
|
||||
|
||||
In the following cases overriding the PCI type detection for dvb-bt8xx might be necessary:
|
||||
|
||||
2a) Running TwinHan and Clones
|
||||
------------------------------
|
||||
|
||||
$ modprobe bttv card=113
|
||||
$ modprobe dst
|
||||
|
||||
Useful parameters for verbosity level and debugging the dst module:
|
||||
|
||||
verbose=0: messages are disabled
|
||||
1: only error messages are displayed
|
||||
2: notifications are displayed
|
||||
3: other useful messages are displayed
|
||||
4: debug setting
|
||||
dst_addons=0: card is a free to air (FTA) card only
|
||||
0x20: card has a conditional access slot for scrambled channels
|
||||
|
||||
The autodetected values are determined by the cards' "response string".
|
||||
In your logs see f. ex.: dst_get_device_id: Recognize [DSTMCI].
|
||||
For bug reports please send in a complete log with verbose=4 activated.
|
||||
Please also see Documentation/dvb/ci.txt.
|
||||
|
||||
2b) Running multiple cards
|
||||
--------------------------
|
||||
|
||||
Examples of card ID's:
|
||||
|
||||
Pinnacle PCTV Sat: 94
|
||||
Nebula Electronics Digi TV: 104
|
||||
pcHDTV HD-2000 TV: 112
|
||||
Twinhan DST and clones: 113
|
||||
Avermedia AverTV DVB-T 771: 123
|
||||
Avermedia AverTV DVB-T 761: 124
|
||||
DViCO FusionHDTV DVB-T Lite: 128
|
||||
DViCO FusionHDTV 5 Lite: 135
|
||||
|
||||
Notice: The order of the card ID should be uprising:
|
||||
Example:
|
||||
$ modprobe bttv card=113 card=135
|
||||
|
||||
For a full list of card ID's please see Documentation/video4linux/CARDLIST.bttv.
|
||||
In case of further problems please subscribe and send questions to the mailing list: linux-dvb@linuxtv.org.
|
||||
|
||||
2c) Probing the cards with broken PCI subsystem ID
|
||||
--------------------------------------------------
|
||||
There are some TwinHan cards that the EEPROM has become corrupted for some
|
||||
reason. The cards do not have correct PCI subsystem ID. But we can force
|
||||
probing the cards with broken PCI subsystem ID
|
||||
|
||||
$ echo 109e 0878 $subvendor $subdevice > \
|
||||
/sys/bus/pci/drivers/bt878/new_id
|
||||
|
||||
109e: PCI_VENDOR_ID_BROOKTREE
|
||||
0878: PCI_DEVICE_ID_BROOKTREE_878
|
||||
|
||||
Authors: Richard Walker,
|
||||
Jamie Honan,
|
||||
Michael Hunold,
|
||||
Manu Abraham,
|
||||
Uwe Bugla,
|
||||
Michael Krufky
|
||||
|
|
@ -1,96 +0,0 @@
|
|||
Thanks go to the following people for patches and contributions:
|
||||
|
||||
Michael Hunold <m.hunold@gmx.de>
|
||||
for the initial saa7146 driver and its recent overhaul
|
||||
|
||||
Christian Theiss
|
||||
for his work on the initial Linux DVB driver
|
||||
|
||||
Marcus Metzler <mocm@metzlerbros.de>
|
||||
Ralph Metzler <rjkm@metzlerbros.de>
|
||||
for their continuing work on the DVB driver
|
||||
|
||||
Michael Holzt <kju@debian.org>
|
||||
for his contributions to the dvb-net driver
|
||||
|
||||
Diego Picciani <d.picciani@novacomp.it>
|
||||
for CyberLogin for Linux which allows logging onto EON
|
||||
(in case you are wondering where CyberLogin is, EON changed its login
|
||||
procedure and CyberLogin is no longer used.)
|
||||
|
||||
Martin Schaller <martin@smurf.franken.de>
|
||||
for patching the cable card decoder driver
|
||||
|
||||
Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>
|
||||
for various fixes regarding tuning, OSD and CI stuff and his work on VDR
|
||||
|
||||
Steve Brown <sbrown@cortland.com>
|
||||
for his AFC kernel thread
|
||||
|
||||
Christoph Martin <martin@uni-mainz.de>
|
||||
for his LIRC infrared handler
|
||||
|
||||
Andreas Oberritter <obi@linuxtv.org>
|
||||
Dennis Noermann <dennis.noermann@noernet.de>
|
||||
Felix Domke <tmbinc@elitedvb.net>
|
||||
Florian Schirmer <jolt@tuxbox.org>
|
||||
Ronny Strutz <3des@elitedvb.de>
|
||||
Wolfram Joost <dbox2@frokaschwei.de>
|
||||
...and all the other dbox2 people
|
||||
for many bugfixes in the generic DVB Core, frontend drivers and
|
||||
their work on the dbox2 port of the DVB driver
|
||||
|
||||
Oliver Endriss <o.endriss@gmx.de>
|
||||
for many bugfixes
|
||||
|
||||
Andrew de Quincey <adq_dvb@lidskialf.net>
|
||||
for the tda1004x frontend driver, and various bugfixes
|
||||
|
||||
Peter Schildmann <peter.schildmann@web.de>
|
||||
for the driver for the Technisat SkyStar2 PCI DVB card
|
||||
|
||||
Vadim Catana <skystar@moldova.cc>
|
||||
Roberto Ragusa <r.ragusa@libero.it>
|
||||
Augusto Cardoso <augusto@carhil.net>
|
||||
for all the work for the FlexCopII chipset by B2C2,Inc.
|
||||
|
||||
Davor Emard <emard@softhome.net>
|
||||
for his work on the budget drivers, the demux code,
|
||||
the module unloading problems, ...
|
||||
|
||||
Hans-Frieder Vogt <hfvogt@arcor.de>
|
||||
for his work on calculating and checking the crc's for the
|
||||
TechnoTrend/Hauppauge DEC driver firmware
|
||||
|
||||
Michael Dreher <michael@5dot1.de>
|
||||
Andreas 'randy' Weinberger
|
||||
for the support of the Fujitsu-Siemens Activy budget DVB-S
|
||||
|
||||
Kenneth Aafløy <ke-aa@frisurf.no>
|
||||
for adding support for Typhoon DVB-S budget card
|
||||
|
||||
Ernst Peinlich <e.peinlich@inode.at>
|
||||
for tuning/DiSEqC support for the DEC 3000-s
|
||||
|
||||
Peter Beutner <p.beutner@gmx.net>
|
||||
for the IR code for the ttusb-dec driver
|
||||
|
||||
Wilson Michaels <wilsonmichaels@earthlink.net>
|
||||
for the lgdt330x frontend driver, and various bugfixes
|
||||
|
||||
Michael Krufky <mkrufky@linuxtv.org>
|
||||
for maintaining v4l/dvb inter-tree dependencies
|
||||
|
||||
Taylor Jacob <rtjacob@earthlink.net>
|
||||
for the nxt2002 frontend driver
|
||||
|
||||
Jean-Francois Thibert <jeanfrancois@sagetv.com>
|
||||
for the nxt2004 frontend driver
|
||||
|
||||
Kirk Lapray <kirk.lapray@gmail.com>
|
||||
for the or51211 and or51132 frontend drivers, and
|
||||
for merging the nxt2002 and nxt2004 modules into a
|
||||
single nxt200x frontend driver.
|
||||
|
||||
(If you think you should be in this list, but you are not, drop a
|
||||
line to the DVB mailing list)
|
||||
|
|
@ -1,62 +0,0 @@
|
|||
Linux Digital Video Broadcast (DVB) subsystem
|
||||
=============================================
|
||||
|
||||
The main development site and CVS repository for these
|
||||
drivers is https://linuxtv.org.
|
||||
|
||||
The developer mailing list linux-dvb is also hosted there,
|
||||
see https://linuxtv.org/lists.php. Please check
|
||||
the archive https://linuxtv.org/pipermail/linux-dvb/
|
||||
and the Wiki https://linuxtv.org/wiki/
|
||||
before asking newbie questions on the list.
|
||||
|
||||
API documentation, utilities and test/example programs
|
||||
are available as part of the old driver package for Linux 2.4
|
||||
(linuxtv-dvb-1.0.x.tar.gz), or from CVS (module DVB).
|
||||
We plan to split this into separate packages, but it's not
|
||||
been done yet.
|
||||
|
||||
https://linuxtv.org/downloads/
|
||||
|
||||
What's inside this directory:
|
||||
|
||||
"avermedia.txt"
|
||||
contains detailed information about the
|
||||
Avermedia DVB-T cards. See also "bt8xx.txt".
|
||||
|
||||
"bt8xx.txt"
|
||||
contains detailed information about the
|
||||
various bt8xx based "budget" DVB cards.
|
||||
|
||||
"cards.txt"
|
||||
contains a list of supported hardware.
|
||||
|
||||
"ci.txt"
|
||||
contains detailed information about the
|
||||
CI module as part from TwinHan cards and Clones.
|
||||
|
||||
"contributors.txt"
|
||||
is the who-is-who of DVB development.
|
||||
|
||||
"faq.txt"
|
||||
contains frequently asked questions and their answers.
|
||||
|
||||
"get_dvb_firmware"
|
||||
script to download and extract firmware for those devices
|
||||
that require it.
|
||||
|
||||
"ttusb-dec.txt"
|
||||
contains detailed information about the
|
||||
TT DEC2000/DEC3000 USB DVB hardware.
|
||||
|
||||
"udev.txt"
|
||||
how to get DVB and udev up and running.
|
||||
|
||||
"README.dvb-usb"
|
||||
contains detailed information about the DVB USB cards.
|
||||
|
||||
"README.flexcop"
|
||||
contains detailed information about the
|
||||
Technisat- and Flexcop B2C2 drivers.
|
||||
|
||||
Good luck and have fun!
|
||||
|
|
@ -1,78 +0,0 @@
|
|||
How to set up the Technisat/B2C2 Flexcop devices
|
||||
================================================
|
||||
|
||||
1) Find out what device you have
|
||||
================================
|
||||
|
||||
Important Notice: The driver does NOT support Technisat USB 2 devices!
|
||||
|
||||
First start your linux box with a shipped kernel:
|
||||
lspci -vvv for a PCI device (lsusb -vvv for an USB device) will show you for example:
|
||||
02:0b.0 Network controller: Techsan Electronics Co Ltd B2C2 FlexCopII DVB chip /
|
||||
Technisat SkyStar2 DVB card (rev 02)
|
||||
|
||||
dmesg | grep frontend may show you for example:
|
||||
DVB: registering frontend 0 (Conexant CX24123/CX24109)...
|
||||
|
||||
2) Kernel compilation:
|
||||
======================
|
||||
|
||||
If the Flexcop / Technisat is the only DVB / TV / Radio device in your box
|
||||
get rid of unnecessary modules and check this one:
|
||||
"Multimedia support" => "Customise analog and hybrid tuner modules to build"
|
||||
In this directory uncheck every driver which is activated there
|
||||
(except "Simple tuner support" for ATSC 3rd generation only -> see case 9 please).
|
||||
|
||||
Then please activate:
|
||||
2a) Main module part:
|
||||
"Multimedia support" => "DVB/ATSC adapters"
|
||||
=> "Technisat/B2C2 FlexcopII(b) and FlexCopIII adapters"
|
||||
|
||||
a.) => "Technisat/B2C2 Air/Sky/Cable2PC PCI" (PCI card) or
|
||||
b.) => "Technisat/B2C2 Air/Sky/Cable2PC USB" (USB 1.1 adapter)
|
||||
and for troubleshooting purposes:
|
||||
c.) => "Enable debug for the B2C2 FlexCop drivers"
|
||||
|
||||
2b) Frontend / Tuner / Demodulator module part:
|
||||
"Multimedia support" => "DVB/ATSC adapters"
|
||||
=> "Customise the frontend modules to build" "Customise DVB frontends" =>
|
||||
|
||||
1.) SkyStar DVB-S Revision 2.3:
|
||||
a.) => "Zarlink VP310/MT312/ZL10313 based"
|
||||
b.) => "Generic I2C PLL based tuners"
|
||||
|
||||
2.) SkyStar DVB-S Revision 2.6:
|
||||
a.) => "ST STV0299 based"
|
||||
b.) => "Generic I2C PLL based tuners"
|
||||
|
||||
3.) SkyStar DVB-S Revision 2.7:
|
||||
a.) => "Samsung S5H1420 based"
|
||||
b.) => "Integrant ITD1000 Zero IF tuner for DVB-S/DSS"
|
||||
c.) => "ISL6421 SEC controller"
|
||||
|
||||
4.) SkyStar DVB-S Revision 2.8:
|
||||
a.) => "Conexant CX24123 based"
|
||||
b.) => "Conexant CX24113/CX24128 tuner for DVB-S/DSS"
|
||||
c.) => "ISL6421 SEC controller"
|
||||
|
||||
5.) AirStar DVB-T card:
|
||||
a.) => "Zarlink MT352 based"
|
||||
b.) => "Generic I2C PLL based tuners"
|
||||
|
||||
6.) CableStar DVB-C card:
|
||||
a.) => "ST STV0297 based"
|
||||
b.) => "Generic I2C PLL based tuners"
|
||||
|
||||
7.) AirStar ATSC card 1st generation:
|
||||
a.) => "Broadcom BCM3510"
|
||||
|
||||
8.) AirStar ATSC card 2nd generation:
|
||||
a.) => "NxtWave Communications NXT2002/NXT2004 based"
|
||||
b.) => "Generic I2C PLL based tuners"
|
||||
|
||||
9.) AirStar ATSC card 3rd generation:
|
||||
a.) => "LG Electronics LGDT3302/LGDT3303 based"
|
||||
b.) "Multimedia support" => "Customise analog and hybrid tuner modules to build"
|
||||
=> "Simple tuner support"
|
||||
|
||||
Author: Uwe Bugla <uwe.bugla@gmx.de> August 2009
|
||||
|
|
@ -1,45 +0,0 @@
|
|||
TechnoTrend/Hauppauge DEC USB Driver
|
||||
====================================
|
||||
|
||||
Driver Status
|
||||
-------------
|
||||
|
||||
Supported:
|
||||
DEC2000-t
|
||||
DEC2450-t
|
||||
DEC3000-s
|
||||
Linux Kernels 2.4 and 2.6
|
||||
Video Streaming
|
||||
Audio Streaming
|
||||
Section Filters
|
||||
Channel Zapping
|
||||
Hotplug firmware loader under 2.6 kernels
|
||||
|
||||
To Do:
|
||||
Tuner status information
|
||||
DVB network interface
|
||||
Streaming video PC->DEC
|
||||
Conax support for 2450-t
|
||||
|
||||
Getting the Firmware
|
||||
--------------------
|
||||
To download the firmware, use the following commands:
|
||||
"get_dvb_firmware dec2000t"
|
||||
"get_dvb_firmware dec2540t"
|
||||
"get_dvb_firmware dec3000s"
|
||||
|
||||
|
||||
Compilation Notes for 2.4 kernels
|
||||
---------------------------------
|
||||
For 2.4 kernels the firmware for the DECs is compiled into the driver itself.
|
||||
|
||||
Copy the three files downloaded above into the build-2.4 directory.
|
||||
|
||||
|
||||
Hotplug Firmware Loading for 2.6 kernels
|
||||
----------------------------------------
|
||||
For 2.6 kernels the firmware is loaded at the point that the driver module is
|
||||
loaded. See linux/Documentation/dvb/firmware.txt for more information.
|
||||
|
||||
Copy the three files downloaded above into the /usr/lib/hotplug/firmware or
|
||||
/lib/firmware directory (depending on configuration of firmware hotplug).
|
||||
|
|
@ -14,6 +14,10 @@ Contents:
|
|||
:maxdepth: 2
|
||||
|
||||
kernel-documentation
|
||||
media/media_uapi
|
||||
media/media_kapi
|
||||
media/dvb-drivers/index
|
||||
media/v4l-drivers/index
|
||||
|
||||
Indices and tables
|
||||
==================
|
||||
|
|
|
|||
|
|
@ -0,0 +1,60 @@
|
|||
# Generate the *.h.rst files from uAPI headers
|
||||
|
||||
PARSER = $(srctree)/Documentation/sphinx/parse-headers.pl
|
||||
UAPI = $(srctree)/include/uapi/linux
|
||||
KAPI = $(srctree)/include/linux
|
||||
SRC_DIR=$(srctree)/Documentation/media
|
||||
|
||||
FILES = audio.h.rst ca.h.rst dmx.h.rst frontend.h.rst net.h.rst video.h.rst \
|
||||
videodev2.h.rst media.h.rst cec.h.rst lirc.h.rst
|
||||
|
||||
TARGETS := $(addprefix $(BUILDDIR)/, $(FILES))
|
||||
|
||||
htmldocs: $(BUILDDIR) ${TARGETS}
|
||||
|
||||
$(BUILDDIR):
|
||||
$(Q)mkdir -p $@
|
||||
|
||||
# Rule to convert a .h file to inline RST documentation
|
||||
|
||||
gen_rst = \
|
||||
echo ${PARSER} $< $@ $(SRC_DIR)/$(notdir $@).exceptions; \
|
||||
${PARSER} $< $@ $(SRC_DIR)/$(notdir $@).exceptions
|
||||
|
||||
quiet_gen_rst = echo ' PARSE $(patsubst $(srctree)/%,%,$<)'; \
|
||||
${PARSER} $< $@ $(SRC_DIR)/$(notdir $@).exceptions
|
||||
|
||||
silent_gen_rst = ${gen_rst}
|
||||
|
||||
$(BUILDDIR)/audio.h.rst: ${UAPI}/dvb/audio.h ${PARSER} $(SRC_DIR)/audio.h.rst.exceptions
|
||||
@$($(quiet)gen_rst)
|
||||
|
||||
$(BUILDDIR)/ca.h.rst: ${UAPI}/dvb/ca.h ${PARSER} $(SRC_DIR)/ca.h.rst.exceptions
|
||||
@$($(quiet)gen_rst)
|
||||
|
||||
$(BUILDDIR)/dmx.h.rst: ${UAPI}/dvb/dmx.h ${PARSER} $(SRC_DIR)/dmx.h.rst.exceptions
|
||||
@$($(quiet)gen_rst)
|
||||
|
||||
$(BUILDDIR)/frontend.h.rst: ${UAPI}/dvb/frontend.h ${PARSER} $(SRC_DIR)/frontend.h.rst.exceptions
|
||||
@$($(quiet)gen_rst)
|
||||
|
||||
$(BUILDDIR)/net.h.rst: ${UAPI}/dvb/net.h ${PARSER} $(SRC_DIR)/net.h.rst.exceptions
|
||||
@$($(quiet)gen_rst)
|
||||
|
||||
$(BUILDDIR)/video.h.rst: ${UAPI}/dvb/video.h ${PARSER} $(SRC_DIR)/video.h.rst.exceptions
|
||||
@$($(quiet)gen_rst)
|
||||
|
||||
$(BUILDDIR)/videodev2.h.rst: ${UAPI}/videodev2.h ${PARSER} $(SRC_DIR)/videodev2.h.rst.exceptions
|
||||
@$($(quiet)gen_rst)
|
||||
|
||||
$(BUILDDIR)/media.h.rst: ${UAPI}/media.h ${PARSER} $(SRC_DIR)/media.h.rst.exceptions
|
||||
@$($(quiet)gen_rst)
|
||||
|
||||
$(BUILDDIR)/cec.h.rst: ${KAPI}/cec.h ${PARSER} $(SRC_DIR)/cec.h.rst.exceptions
|
||||
@$($(quiet)gen_rst)
|
||||
|
||||
$(BUILDDIR)/lirc.h.rst: ${UAPI}/lirc.h ${PARSER} $(SRC_DIR)/lirc.h.rst.exceptions
|
||||
@$($(quiet)gen_rst)
|
||||
|
||||
cleandocs:
|
||||
-rm ${TARGETS}
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
# Ignore header name
|
||||
ignore define _DVBAUDIO_H_
|
||||
|
||||
# Typedef pointing to structs
|
||||
replace typedef audio_karaoke_t audio-karaoke
|
||||
|
||||
# Undocumented audio caps, as this is a deprecated API anyway
|
||||
ignore define AUDIO_CAP_DTS
|
||||
ignore define AUDIO_CAP_LPCM
|
||||
ignore define AUDIO_CAP_MP1
|
||||
ignore define AUDIO_CAP_MP2
|
||||
ignore define AUDIO_CAP_MP3
|
||||
ignore define AUDIO_CAP_AAC
|
||||
ignore define AUDIO_CAP_OGG
|
||||
ignore define AUDIO_CAP_SDDS
|
||||
ignore define AUDIO_CAP_AC3
|
||||
|
||||
# some typedefs should point to struct/enums
|
||||
replace typedef audio_mixer_t audio-mixer
|
||||
replace typedef audio_status_t audio-status
|
||||
|
|
@ -0,0 +1,24 @@
|
|||
# Ignore header name
|
||||
ignore define _DVBCA_H_
|
||||
|
||||
# struct ca_slot_info defines
|
||||
replace define CA_CI ca-slot-info
|
||||
replace define CA_CI_LINK ca-slot-info
|
||||
replace define CA_CI_PHYS ca-slot-info
|
||||
replace define CA_DESCR ca-slot-info
|
||||
replace define CA_SC ca-slot-info
|
||||
replace define CA_CI_MODULE_PRESENT ca-slot-info
|
||||
replace define CA_CI_MODULE_READY ca-slot-info
|
||||
|
||||
# struct ca_descr_info defines
|
||||
replace define CA_ECD ca-descr-info
|
||||
replace define CA_NDS ca-descr-info
|
||||
replace define CA_DSS ca-descr-info
|
||||
|
||||
# some typedefs should point to struct/enums
|
||||
replace typedef ca_pid_t ca-pid
|
||||
replace typedef ca_slot_info_t ca-slot-info
|
||||
replace typedef ca_descr_info_t ca-descr-info
|
||||
replace typedef ca_caps_t ca-caps
|
||||
replace typedef ca_msg_t ca-msg
|
||||
replace typedef ca_descr_t ca-descr
|
||||
|
|
@ -0,0 +1,492 @@
|
|||
# Ignore header name
|
||||
ignore define _CEC_UAPI_H
|
||||
|
||||
# Rename some symbols, to avoid namespace conflicts
|
||||
replace struct cec_event_state_change cec-event-state-change_s
|
||||
replace struct cec_event_lost_msgs cec-event-lost-msgs_s
|
||||
replace enum cec_mode_initiator cec-mode-initiator_e
|
||||
replace enum cec_mode_follower cec-mode-follower_e
|
||||
|
||||
# define macros to ignore
|
||||
|
||||
ignore define CEC_MAX_MSG_SIZE
|
||||
ignore define CEC_MAX_LOG_ADDRS
|
||||
|
||||
ignore define CEC_LOG_ADDR_MASK_TV
|
||||
ignore define CEC_LOG_ADDR_MASK_RECORD
|
||||
ignore define CEC_LOG_ADDR_MASK_TUNER
|
||||
ignore define CEC_LOG_ADDR_MASK_PLAYBACK
|
||||
ignore define CEC_LOG_ADDR_MASK_AUDIOSYSTEM
|
||||
ignore define CEC_LOG_ADDR_MASK_BACKUP
|
||||
ignore define CEC_LOG_ADDR_MASK_SPECIFIC
|
||||
ignore define CEC_LOG_ADDR_MASK_UNREGISTERED
|
||||
|
||||
# Shouldn't them be documented?
|
||||
ignore define CEC_LOG_ADDR_INVALID
|
||||
ignore define CEC_PHYS_ADDR_INVALID
|
||||
|
||||
ignore define CEC_VENDOR_ID_NONE
|
||||
|
||||
ignore define CEC_MODE_INITIATOR_MSK
|
||||
ignore define CEC_MODE_FOLLOWER_MSK
|
||||
|
||||
ignore define CEC_EVENT_FL_INITIAL_STATE
|
||||
|
||||
# Part of CEC 2.0 spec - shouldn't be documented too?
|
||||
ignore define CEC_LOG_ADDR_TV
|
||||
ignore define CEC_LOG_ADDR_RECORD_1
|
||||
ignore define CEC_LOG_ADDR_RECORD_2
|
||||
ignore define CEC_LOG_ADDR_TUNER_1
|
||||
ignore define CEC_LOG_ADDR_PLAYBACK_1
|
||||
ignore define CEC_LOG_ADDR_AUDIOSYSTEM
|
||||
ignore define CEC_LOG_ADDR_TUNER_2
|
||||
ignore define CEC_LOG_ADDR_TUNER_3
|
||||
ignore define CEC_LOG_ADDR_PLAYBACK_2
|
||||
ignore define CEC_LOG_ADDR_RECORD_3
|
||||
ignore define CEC_LOG_ADDR_TUNER_4
|
||||
ignore define CEC_LOG_ADDR_PLAYBACK_3
|
||||
ignore define CEC_LOG_ADDR_BACKUP_1
|
||||
ignore define CEC_LOG_ADDR_BACKUP_2
|
||||
ignore define CEC_LOG_ADDR_SPECIFIC
|
||||
ignore define CEC_LOG_ADDR_UNREGISTERED
|
||||
ignore define CEC_LOG_ADDR_BROADCAST
|
||||
|
||||
# IMHO, those should also be documented
|
||||
|
||||
ignore define CEC_MSG_ACTIVE_SOURCE
|
||||
ignore define CEC_MSG_IMAGE_VIEW_ON
|
||||
ignore define CEC_MSG_TEXT_VIEW_ON
|
||||
|
||||
ignore define CEC_MSG_INACTIVE_SOURCE
|
||||
ignore define CEC_MSG_REQUEST_ACTIVE_SOURCE
|
||||
ignore define CEC_MSG_ROUTING_CHANGE
|
||||
ignore define CEC_MSG_ROUTING_INFORMATION
|
||||
ignore define CEC_MSG_SET_STREAM_PATH
|
||||
|
||||
ignore define CEC_MSG_STANDBY
|
||||
|
||||
ignore define CEC_MSG_RECORD_OFF
|
||||
ignore define CEC_MSG_RECORD_ON
|
||||
|
||||
ignore define CEC_OP_RECORD_SRC_OWN
|
||||
ignore define CEC_OP_RECORD_SRC_DIGITAL
|
||||
ignore define CEC_OP_RECORD_SRC_ANALOG
|
||||
ignore define CEC_OP_RECORD_SRC_EXT_PLUG
|
||||
ignore define CEC_OP_RECORD_SRC_EXT_PHYS_ADDR
|
||||
|
||||
ignore define CEC_OP_SERVICE_ID_METHOD_BY_DIG_ID
|
||||
ignore define CEC_OP_SERVICE_ID_METHOD_BY_CHANNEL
|
||||
|
||||
ignore define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ARIB_GEN
|
||||
ignore define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_GEN
|
||||
ignore define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_GEN
|
||||
ignore define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ARIB_BS
|
||||
ignore define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ARIB_CS
|
||||
ignore define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ARIB_T
|
||||
ignore define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_CABLE
|
||||
ignore define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_SAT
|
||||
ignore define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_T
|
||||
ignore define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_C
|
||||
ignore define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_S
|
||||
ignore define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_S2
|
||||
ignore define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_T
|
||||
|
||||
ignore define CEC_OP_ANA_BCAST_TYPE_CABLE
|
||||
ignore define CEC_OP_ANA_BCAST_TYPE_SATELLITE
|
||||
ignore define CEC_OP_ANA_BCAST_TYPE_TERRESTRIAL
|
||||
|
||||
ignore define CEC_OP_BCAST_SYSTEM_PAL_BG
|
||||
ignore define CEC_OP_BCAST_SYSTEM_SECAM_LQ
|
||||
ignore define CEC_OP_BCAST_SYSTEM_PAL_M
|
||||
ignore define CEC_OP_BCAST_SYSTEM_NTSC_M
|
||||
ignore define CEC_OP_BCAST_SYSTEM_PAL_I
|
||||
ignore define CEC_OP_BCAST_SYSTEM_SECAM_DK
|
||||
ignore define CEC_OP_BCAST_SYSTEM_SECAM_BG
|
||||
ignore define CEC_OP_BCAST_SYSTEM_SECAM_L
|
||||
ignore define CEC_OP_BCAST_SYSTEM_PAL_DK
|
||||
ignore define CEC_OP_BCAST_SYSTEM_OTHER
|
||||
|
||||
ignore define CEC_OP_CHANNEL_NUMBER_FMT_1_PART
|
||||
ignore define CEC_OP_CHANNEL_NUMBER_FMT_2_PART
|
||||
|
||||
ignore define CEC_MSG_RECORD_STATUS
|
||||
|
||||
ignore define CEC_OP_RECORD_STATUS_CUR_SRC
|
||||
ignore define CEC_OP_RECORD_STATUS_DIG_SERVICE
|
||||
ignore define CEC_OP_RECORD_STATUS_ANA_SERVICE
|
||||
ignore define CEC_OP_RECORD_STATUS_EXT_INPUT
|
||||
ignore define CEC_OP_RECORD_STATUS_NO_DIG_SERVICE
|
||||
ignore define CEC_OP_RECORD_STATUS_NO_ANA_SERVICE
|
||||
ignore define CEC_OP_RECORD_STATUS_NO_SERVICE
|
||||
ignore define CEC_OP_RECORD_STATUS_INVALID_EXT_PLUG
|
||||
ignore define CEC_OP_RECORD_STATUS_INVALID_EXT_PHYS_ADDR
|
||||
ignore define CEC_OP_RECORD_STATUS_UNSUP_CA
|
||||
ignore define CEC_OP_RECORD_STATUS_NO_CA_ENTITLEMENTS
|
||||
ignore define CEC_OP_RECORD_STATUS_CANT_COPY_SRC
|
||||
ignore define CEC_OP_RECORD_STATUS_NO_MORE_COPIES
|
||||
ignore define CEC_OP_RECORD_STATUS_NO_MEDIA
|
||||
ignore define CEC_OP_RECORD_STATUS_PLAYING
|
||||
ignore define CEC_OP_RECORD_STATUS_ALREADY_RECORDING
|
||||
ignore define CEC_OP_RECORD_STATUS_MEDIA_PROT
|
||||
ignore define CEC_OP_RECORD_STATUS_NO_SIGNAL
|
||||
ignore define CEC_OP_RECORD_STATUS_MEDIA_PROBLEM
|
||||
ignore define CEC_OP_RECORD_STATUS_NO_SPACE
|
||||
ignore define CEC_OP_RECORD_STATUS_PARENTAL_LOCK
|
||||
ignore define CEC_OP_RECORD_STATUS_TERMINATED_OK
|
||||
ignore define CEC_OP_RECORD_STATUS_ALREADY_TERM
|
||||
ignore define CEC_OP_RECORD_STATUS_OTHER
|
||||
|
||||
ignore define CEC_MSG_RECORD_TV_SCREEN
|
||||
|
||||
ignore define CEC_MSG_CLEAR_ANALOGUE_TIMER
|
||||
|
||||
ignore define CEC_OP_REC_SEQ_SUNDAY
|
||||
ignore define CEC_OP_REC_SEQ_MONDAY
|
||||
ignore define CEC_OP_REC_SEQ_TUESDAY
|
||||
ignore define CEC_OP_REC_SEQ_WEDNESDAY
|
||||
ignore define CEC_OP_REC_SEQ_THURSDAY
|
||||
ignore define CEC_OP_REC_SEQ_FRIDAY
|
||||
ignore define CEC_OP_REC_SEQ_SATERDAY
|
||||
ignore define CEC_OP_REC_SEQ_ONCE_ONLY
|
||||
|
||||
ignore define CEC_MSG_CLEAR_DIGITAL_TIMER
|
||||
|
||||
ignore define CEC_MSG_CLEAR_EXT_TIMER
|
||||
|
||||
ignore define CEC_OP_EXT_SRC_PLUG
|
||||
ignore define CEC_OP_EXT_SRC_PHYS_ADDR
|
||||
|
||||
ignore define CEC_MSG_SET_ANALOGUE_TIMER
|
||||
ignore define CEC_MSG_SET_DIGITAL_TIMER
|
||||
ignore define CEC_MSG_SET_EXT_TIMER
|
||||
|
||||
ignore define CEC_MSG_SET_TIMER_PROGRAM_TITLE
|
||||
ignore define CEC_MSG_TIMER_CLEARED_STATUS
|
||||
|
||||
ignore define CEC_OP_TIMER_CLR_STAT_RECORDING
|
||||
ignore define CEC_OP_TIMER_CLR_STAT_NO_MATCHING
|
||||
ignore define CEC_OP_TIMER_CLR_STAT_NO_INFO
|
||||
ignore define CEC_OP_TIMER_CLR_STAT_CLEARED
|
||||
|
||||
ignore define CEC_MSG_TIMER_STATUS
|
||||
|
||||
ignore define CEC_OP_TIMER_OVERLAP_WARNING_NO_OVERLAP
|
||||
ignore define CEC_OP_TIMER_OVERLAP_WARNING_OVERLAP
|
||||
|
||||
ignore define CEC_OP_MEDIA_INFO_UNPROT_MEDIA
|
||||
ignore define CEC_OP_MEDIA_INFO_PROT_MEDIA
|
||||
ignore define CEC_OP_MEDIA_INFO_NO_MEDIA
|
||||
|
||||
ignore define CEC_OP_PROG_IND_NOT_PROGRAMMED
|
||||
ignore define CEC_OP_PROG_IND_PROGRAMMED
|
||||
|
||||
ignore define CEC_OP_PROG_INFO_ENOUGH_SPACE
|
||||
ignore define CEC_OP_PROG_INFO_NOT_ENOUGH_SPACE
|
||||
ignore define CEC_OP_PROG_INFO_MIGHT_NOT_BE_ENOUGH_SPACE
|
||||
ignore define CEC_OP_PROG_INFO_NONE_AVAILABLE
|
||||
|
||||
ignore define CEC_OP_PROG_ERROR_NO_FREE_TIMER
|
||||
ignore define CEC_OP_PROG_ERROR_DATE_OUT_OF_RANGE
|
||||
ignore define CEC_OP_PROG_ERROR_REC_SEQ_ERROR
|
||||
ignore define CEC_OP_PROG_ERROR_INV_EXT_PLUG
|
||||
ignore define CEC_OP_PROG_ERROR_INV_EXT_PHYS_ADDR
|
||||
ignore define CEC_OP_PROG_ERROR_CA_UNSUPP
|
||||
ignore define CEC_OP_PROG_ERROR_INSUF_CA_ENTITLEMENTS
|
||||
ignore define CEC_OP_PROG_ERROR_RESOLUTION_UNSUPP
|
||||
ignore define CEC_OP_PROG_ERROR_PARENTAL_LOCK
|
||||
ignore define CEC_OP_PROG_ERROR_CLOCK_FAILURE
|
||||
ignore define CEC_OP_PROG_ERROR_DUPLICATE
|
||||
|
||||
ignore define CEC_MSG_CEC_VERSION
|
||||
|
||||
ignore define CEC_OP_CEC_VERSION_1_3A
|
||||
ignore define CEC_OP_CEC_VERSION_1_4
|
||||
ignore define CEC_OP_CEC_VERSION_2_0
|
||||
|
||||
ignore define CEC_MSG_GET_CEC_VERSION
|
||||
ignore define CEC_MSG_GIVE_PHYSICAL_ADDR
|
||||
ignore define CEC_MSG_GET_MENU_LANGUAGE
|
||||
ignore define CEC_MSG_REPORT_PHYSICAL_ADDR
|
||||
|
||||
ignore define CEC_OP_PRIM_DEVTYPE_TV
|
||||
ignore define CEC_OP_PRIM_DEVTYPE_RECORD
|
||||
ignore define CEC_OP_PRIM_DEVTYPE_TUNER
|
||||
ignore define CEC_OP_PRIM_DEVTYPE_PLAYBACK
|
||||
ignore define CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM
|
||||
ignore define CEC_OP_PRIM_DEVTYPE_SWITCH
|
||||
ignore define CEC_OP_PRIM_DEVTYPE_PROCESSOR
|
||||
|
||||
ignore define CEC_MSG_SET_MENU_LANGUAGE
|
||||
ignore define CEC_MSG_REPORT_FEATURES
|
||||
|
||||
ignore define CEC_OP_ALL_DEVTYPE_TV
|
||||
ignore define CEC_OP_ALL_DEVTYPE_RECORD
|
||||
ignore define CEC_OP_ALL_DEVTYPE_TUNER
|
||||
ignore define CEC_OP_ALL_DEVTYPE_PLAYBACK
|
||||
ignore define CEC_OP_ALL_DEVTYPE_AUDIOSYSTEM
|
||||
ignore define CEC_OP_ALL_DEVTYPE_SWITCH
|
||||
|
||||
ignore define CEC_OP_FEAT_EXT
|
||||
|
||||
ignore define CEC_OP_FEAT_RC_TV_PROFILE_NONE
|
||||
ignore define CEC_OP_FEAT_RC_TV_PROFILE_1
|
||||
ignore define CEC_OP_FEAT_RC_TV_PROFILE_2
|
||||
ignore define CEC_OP_FEAT_RC_TV_PROFILE_3
|
||||
ignore define CEC_OP_FEAT_RC_TV_PROFILE_4
|
||||
ignore define CEC_OP_FEAT_RC_SRC_HAS_DEV_ROOT_MENU
|
||||
ignore define CEC_OP_FEAT_RC_SRC_HAS_DEV_SETUP_MENU
|
||||
ignore define CEC_OP_FEAT_RC_SRC_HAS_CONTENTS_MENU
|
||||
ignore define CEC_OP_FEAT_RC_SRC_HAS_MEDIA_TOP_MENU
|
||||
ignore define CEC_OP_FEAT_RC_SRC_HAS_MEDIA_CONTEXT_MENU
|
||||
|
||||
ignore define CEC_OP_FEAT_DEV_HAS_RECORD_TV_SCREEN
|
||||
ignore define CEC_OP_FEAT_DEV_HAS_SET_OSD_STRING
|
||||
ignore define CEC_OP_FEAT_DEV_HAS_DECK_CONTROL
|
||||
ignore define CEC_OP_FEAT_DEV_HAS_SET_AUDIO_RATE
|
||||
ignore define CEC_OP_FEAT_DEV_SINK_HAS_ARC_TX
|
||||
ignore define CEC_OP_FEAT_DEV_SOURCE_HAS_ARC_RX
|
||||
|
||||
ignore define CEC_MSG_GIVE_FEATURES
|
||||
|
||||
ignore define CEC_MSG_DECK_CONTROL
|
||||
|
||||
ignore define CEC_OP_DECK_CTL_MODE_SKIP_FWD
|
||||
ignore define CEC_OP_DECK_CTL_MODE_SKIP_REV
|
||||
ignore define CEC_OP_DECK_CTL_MODE_STOP
|
||||
ignore define CEC_OP_DECK_CTL_MODE_EJECT
|
||||
|
||||
ignore define CEC_MSG_DECK_STATUS
|
||||
|
||||
ignore define CEC_OP_DECK_INFO_PLAY
|
||||
ignore define CEC_OP_DECK_INFO_RECORD
|
||||
ignore define CEC_OP_DECK_INFO_PLAY_REV
|
||||
ignore define CEC_OP_DECK_INFO_STILL
|
||||
ignore define CEC_OP_DECK_INFO_SLOW
|
||||
ignore define CEC_OP_DECK_INFO_SLOW_REV
|
||||
ignore define CEC_OP_DECK_INFO_FAST_FWD
|
||||
ignore define CEC_OP_DECK_INFO_FAST_REV
|
||||
ignore define CEC_OP_DECK_INFO_NO_MEDIA
|
||||
ignore define CEC_OP_DECK_INFO_STOP
|
||||
ignore define CEC_OP_DECK_INFO_SKIP_FWD
|
||||
ignore define CEC_OP_DECK_INFO_SKIP_REV
|
||||
ignore define CEC_OP_DECK_INFO_INDEX_SEARCH_FWD
|
||||
ignore define CEC_OP_DECK_INFO_INDEX_SEARCH_REV
|
||||
ignore define CEC_OP_DECK_INFO_OTHER
|
||||
|
||||
ignore define CEC_MSG_GIVE_DECK_STATUS
|
||||
|
||||
ignore define CEC_OP_STATUS_REQ_ON
|
||||
ignore define CEC_OP_STATUS_REQ_OFF
|
||||
ignore define CEC_OP_STATUS_REQ_ONCE
|
||||
|
||||
ignore define CEC_MSG_PLAY
|
||||
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_FWD
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_REV
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_STILL
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_FAST_FWD_MIN
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_FAST_FWD_MED
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_FAST_FWD_MAX
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_FAST_REV_MIN
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_FAST_REV_MED
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_FAST_REV_MAX
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_SLOW_FWD_MIN
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_SLOW_FWD_MED
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_SLOW_FWD_MAX
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_SLOW_REV_MIN
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_SLOW_REV_MED
|
||||
ignore define CEC_OP_PLAY_MODE_PLAY_SLOW_REV_MAX
|
||||
|
||||
ignore define CEC_MSG_GIVE_TUNER_DEVICE_STATUS
|
||||
ignore define CEC_MSG_SELECT_ANALOGUE_SERVICE
|
||||
ignore define CEC_MSG_SELECT_DIGITAL_SERVICE
|
||||
ignore define CEC_MSG_TUNER_DEVICE_STATUS
|
||||
|
||||
ignore define CEC_OP_REC_FLAG_USED
|
||||
ignore define CEC_OP_REC_FLAG_NOT_USED
|
||||
|
||||
ignore define CEC_OP_TUNER_DISPLAY_INFO_DIGITAL
|
||||
ignore define CEC_OP_TUNER_DISPLAY_INFO_NONE
|
||||
ignore define CEC_OP_TUNER_DISPLAY_INFO_ANALOGUE
|
||||
|
||||
ignore define CEC_MSG_TUNER_STEP_DECREMENT
|
||||
ignore define CEC_MSG_TUNER_STEP_INCREMENT
|
||||
|
||||
ignore define CEC_MSG_DEVICE_VENDOR_ID
|
||||
ignore define CEC_MSG_GIVE_DEVICE_VENDOR_ID
|
||||
ignore define CEC_MSG_VENDOR_COMMAND
|
||||
ignore define CEC_MSG_VENDOR_COMMAND_WITH_ID
|
||||
ignore define CEC_MSG_VENDOR_REMOTE_BUTTON_DOWN
|
||||
ignore define CEC_MSG_VENDOR_REMOTE_BUTTON_UP
|
||||
|
||||
ignore define CEC_MSG_SET_OSD_STRING
|
||||
|
||||
ignore define CEC_OP_DISP_CTL_DEFAULT
|
||||
ignore define CEC_OP_DISP_CTL_UNTIL_CLEARED
|
||||
ignore define CEC_OP_DISP_CTL_CLEAR
|
||||
|
||||
ignore define CEC_MSG_GIVE_OSD_NAME
|
||||
ignore define CEC_MSG_SET_OSD_NAME
|
||||
|
||||
ignore define CEC_MSG_MENU_REQUEST
|
||||
|
||||
ignore define CEC_OP_MENU_REQUEST_ACTIVATE
|
||||
ignore define CEC_OP_MENU_REQUEST_DEACTIVATE
|
||||
ignore define CEC_OP_MENU_REQUEST_QUERY
|
||||
|
||||
ignore define CEC_MSG_MENU_STATUS
|
||||
|
||||
ignore define CEC_OP_MENU_STATE_ACTIVATED
|
||||
ignore define CEC_OP_MENU_STATE_DEACTIVATED
|
||||
|
||||
ignore define CEC_MSG_USER_CONTROL_PRESSED
|
||||
|
||||
ignore define CEC_OP_UI_BCAST_TYPE_TOGGLE_ALL
|
||||
ignore define CEC_OP_UI_BCAST_TYPE_TOGGLE_DIG_ANA
|
||||
ignore define CEC_OP_UI_BCAST_TYPE_ANALOGUE
|
||||
ignore define CEC_OP_UI_BCAST_TYPE_ANALOGUE_T
|
||||
ignore define CEC_OP_UI_BCAST_TYPE_ANALOGUE_CABLE
|
||||
ignore define CEC_OP_UI_BCAST_TYPE_ANALOGUE_SAT
|
||||
ignore define CEC_OP_UI_BCAST_TYPE_DIGITAL
|
||||
ignore define CEC_OP_UI_BCAST_TYPE_DIGITAL_T
|
||||
ignore define CEC_OP_UI_BCAST_TYPE_DIGITAL_CABLE
|
||||
ignore define CEC_OP_UI_BCAST_TYPE_DIGITAL_SAT
|
||||
ignore define CEC_OP_UI_BCAST_TYPE_DIGITAL_COM_SAT
|
||||
ignore define CEC_OP_UI_BCAST_TYPE_DIGITAL_COM_SAT2
|
||||
ignore define CEC_OP_UI_BCAST_TYPE_IP
|
||||
|
||||
ignore define CEC_OP_UI_SND_PRES_CTL_DUAL_MONO
|
||||
ignore define CEC_OP_UI_SND_PRES_CTL_KARAOKE
|
||||
ignore define CEC_OP_UI_SND_PRES_CTL_DOWNMIX
|
||||
ignore define CEC_OP_UI_SND_PRES_CTL_REVERB
|
||||
ignore define CEC_OP_UI_SND_PRES_CTL_EQUALIZER
|
||||
ignore define CEC_OP_UI_SND_PRES_CTL_BASS_UP
|
||||
ignore define CEC_OP_UI_SND_PRES_CTL_BASS_NEUTRAL
|
||||
ignore define CEC_OP_UI_SND_PRES_CTL_BASS_DOWN
|
||||
ignore define CEC_OP_UI_SND_PRES_CTL_TREBLE_UP
|
||||
ignore define CEC_OP_UI_SND_PRES_CTL_TREBLE_NEUTRAL
|
||||
ignore define CEC_OP_UI_SND_PRES_CTL_TREBLE_DOWN
|
||||
|
||||
ignore define CEC_MSG_USER_CONTROL_RELEASED
|
||||
|
||||
ignore define CEC_MSG_GIVE_DEVICE_POWER_STATUS
|
||||
ignore define CEC_MSG_REPORT_POWER_STATUS
|
||||
|
||||
ignore define CEC_OP_POWER_STATUS_ON
|
||||
ignore define CEC_OP_POWER_STATUS_STANDBY
|
||||
ignore define CEC_OP_POWER_STATUS_TO_ON
|
||||
ignore define CEC_OP_POWER_STATUS_TO_STANDBY
|
||||
|
||||
ignore define CEC_MSG_FEATURE_ABORT
|
||||
|
||||
ignore define CEC_OP_ABORT_UNRECOGNIZED_OP
|
||||
ignore define CEC_OP_ABORT_INCORRECT_MODE
|
||||
ignore define CEC_OP_ABORT_NO_SOURCE
|
||||
ignore define CEC_OP_ABORT_INVALID_OP
|
||||
ignore define CEC_OP_ABORT_REFUSED
|
||||
ignore define CEC_OP_ABORT_UNDETERMINED
|
||||
|
||||
ignore define CEC_MSG_ABORT
|
||||
|
||||
ignore define CEC_MSG_GIVE_AUDIO_STATUS
|
||||
ignore define CEC_MSG_GIVE_SYSTEM_AUDIO_MODE_STATUS
|
||||
ignore define CEC_MSG_REPORT_AUDIO_STATUS
|
||||
|
||||
ignore define CEC_OP_AUD_MUTE_STATUS_OFF
|
||||
ignore define CEC_OP_AUD_MUTE_STATUS_ON
|
||||
|
||||
ignore define CEC_MSG_REPORT_SHORT_AUDIO_DESCRIPTOR
|
||||
ignore define CEC_MSG_REQUEST_SHORT_AUDIO_DESCRIPTOR
|
||||
ignore define CEC_MSG_SET_SYSTEM_AUDIO_MODE
|
||||
|
||||
ignore define CEC_OP_SYS_AUD_STATUS_OFF
|
||||
ignore define CEC_OP_SYS_AUD_STATUS_ON
|
||||
|
||||
ignore define CEC_MSG_SYSTEM_AUDIO_MODE_REQUEST
|
||||
ignore define CEC_MSG_SYSTEM_AUDIO_MODE_STATUS
|
||||
|
||||
ignore define CEC_OP_AUD_FMT_ID_CEA861
|
||||
ignore define CEC_OP_AUD_FMT_ID_CEA861_CXT
|
||||
|
||||
ignore define CEC_MSG_SET_AUDIO_RATE
|
||||
|
||||
ignore define CEC_OP_AUD_RATE_OFF
|
||||
ignore define CEC_OP_AUD_RATE_WIDE_STD
|
||||
ignore define CEC_OP_AUD_RATE_WIDE_FAST
|
||||
ignore define CEC_OP_AUD_RATE_WIDE_SLOW
|
||||
ignore define CEC_OP_AUD_RATE_NARROW_STD
|
||||
ignore define CEC_OP_AUD_RATE_NARROW_FAST
|
||||
ignore define CEC_OP_AUD_RATE_NARROW_SLOW
|
||||
|
||||
ignore define CEC_MSG_INITIATE_ARC
|
||||
ignore define CEC_MSG_REPORT_ARC_INITIATED
|
||||
ignore define CEC_MSG_REPORT_ARC_TERMINATED
|
||||
ignore define CEC_MSG_REQUEST_ARC_INITIATION
|
||||
ignore define CEC_MSG_REQUEST_ARC_TERMINATION
|
||||
ignore define CEC_MSG_TERMINATE_ARC
|
||||
|
||||
ignore define CEC_MSG_REQUEST_CURRENT_LATENCY
|
||||
ignore define CEC_MSG_REPORT_CURRENT_LATENCY
|
||||
|
||||
ignore define CEC_OP_LOW_LATENCY_MODE_OFF
|
||||
ignore define CEC_OP_LOW_LATENCY_MODE_ON
|
||||
|
||||
ignore define CEC_OP_AUD_OUT_COMPENSATED_NA
|
||||
ignore define CEC_OP_AUD_OUT_COMPENSATED_DELAY
|
||||
ignore define CEC_OP_AUD_OUT_COMPENSATED_NO_DELAY
|
||||
ignore define CEC_OP_AUD_OUT_COMPENSATED_PARTIAL_DELAY
|
||||
|
||||
ignore define CEC_MSG_CDC_MESSAGE
|
||||
|
||||
ignore define CEC_MSG_CDC_HEC_INQUIRE_STATE
|
||||
ignore define CEC_MSG_CDC_HEC_REPORT_STATE
|
||||
|
||||
ignore define CEC_OP_HEC_FUNC_STATE_NOT_SUPPORTED
|
||||
ignore define CEC_OP_HEC_FUNC_STATE_INACTIVE
|
||||
ignore define CEC_OP_HEC_FUNC_STATE_ACTIVE
|
||||
ignore define CEC_OP_HEC_FUNC_STATE_ACTIVATION_FIELD
|
||||
|
||||
ignore define CEC_OP_HOST_FUNC_STATE_NOT_SUPPORTED
|
||||
ignore define CEC_OP_HOST_FUNC_STATE_INACTIVE
|
||||
ignore define CEC_OP_HOST_FUNC_STATE_ACTIVE
|
||||
|
||||
ignore define CEC_OP_ENC_FUNC_STATE_EXT_CON_NOT_SUPPORTED
|
||||
ignore define CEC_OP_ENC_FUNC_STATE_EXT_CON_INACTIVE
|
||||
ignore define CEC_OP_ENC_FUNC_STATE_EXT_CON_ACTIVE
|
||||
|
||||
ignore define CEC_OP_CDC_ERROR_CODE_NONE
|
||||
ignore define CEC_OP_CDC_ERROR_CODE_CAP_UNSUPPORTED
|
||||
ignore define CEC_OP_CDC_ERROR_CODE_WRONG_STATE
|
||||
ignore define CEC_OP_CDC_ERROR_CODE_OTHER
|
||||
|
||||
ignore define CEC_OP_HEC_SUPPORT_NO
|
||||
ignore define CEC_OP_HEC_SUPPORT_YES
|
||||
|
||||
ignore define CEC_OP_HEC_ACTIVATION_ON
|
||||
ignore define CEC_OP_HEC_ACTIVATION_OFF
|
||||
|
||||
ignore define CEC_MSG_CDC_HEC_SET_STATE_ADJACENT
|
||||
ignore define CEC_MSG_CDC_HEC_SET_STATE
|
||||
|
||||
ignore define CEC_OP_HEC_SET_STATE_DEACTIVATE
|
||||
ignore define CEC_OP_HEC_SET_STATE_ACTIVATE
|
||||
|
||||
ignore define CEC_MSG_CDC_HEC_REQUEST_DEACTIVATION
|
||||
ignore define CEC_MSG_CDC_HEC_NOTIFY_ALIVE
|
||||
ignore define CEC_MSG_CDC_HEC_DISCOVER
|
||||
|
||||
ignore define CEC_MSG_CDC_HPD_SET_STATE
|
||||
|
||||
ignore define CEC_OP_HPD_STATE_CP_EDID_DISABLE
|
||||
ignore define CEC_OP_HPD_STATE_CP_EDID_ENABLE
|
||||
ignore define CEC_OP_HPD_STATE_CP_EDID_DISABLE_ENABLE
|
||||
ignore define CEC_OP_HPD_STATE_EDID_DISABLE
|
||||
ignore define CEC_OP_HPD_STATE_EDID_ENABLE
|
||||
ignore define CEC_OP_HPD_STATE_EDID_DISABLE_ENABLE
|
||||
ignore define CEC_MSG_CDC_HPD_REPORT_STATE
|
||||
|
||||
ignore define CEC_OP_HPD_ERROR_NONE
|
||||
ignore define CEC_OP_HPD_ERROR_INITIATOR_NOT_CAPABLE
|
||||
ignore define CEC_OP_HPD_ERROR_INITIATOR_WRONG_STATE
|
||||
ignore define CEC_OP_HPD_ERROR_OTHER
|
||||
ignore define CEC_OP_HPD_ERROR_NONE_NO_VIDEO
|
||||
|
|
@ -0,0 +1,63 @@
|
|||
# Ignore header name
|
||||
ignore define _UAPI_DVBDMX_H_
|
||||
|
||||
# Ignore limit constants
|
||||
ignore define DMX_FILTER_SIZE
|
||||
|
||||
# dmx-pes-type-t enum symbols
|
||||
replace enum dmx_ts_pes dmx-pes-type-t
|
||||
replace symbol DMX_PES_AUDIO0 dmx-pes-type-t
|
||||
replace symbol DMX_PES_VIDEO0 dmx-pes-type-t
|
||||
replace symbol DMX_PES_TELETEXT0 dmx-pes-type-t
|
||||
replace symbol DMX_PES_SUBTITLE0 dmx-pes-type-t
|
||||
replace symbol DMX_PES_PCR0 dmx-pes-type-t
|
||||
replace symbol DMX_PES_AUDIO1 dmx-pes-type-t
|
||||
replace symbol DMX_PES_VIDEO1 dmx-pes-type-t
|
||||
replace symbol DMX_PES_TELETEXT1 dmx-pes-type-t
|
||||
replace symbol DMX_PES_SUBTITLE1 dmx-pes-type-t
|
||||
replace symbol DMX_PES_PCR1 dmx-pes-type-t
|
||||
replace symbol DMX_PES_AUDIO2 dmx-pes-type-t
|
||||
replace symbol DMX_PES_VIDEO2 dmx-pes-type-t
|
||||
replace symbol DMX_PES_TELETEXT2 dmx-pes-type-t
|
||||
replace symbol DMX_PES_SUBTITLE2 dmx-pes-type-t
|
||||
replace symbol DMX_PES_PCR2 dmx-pes-type-t
|
||||
replace symbol DMX_PES_AUDIO3 dmx-pes-type-t
|
||||
replace symbol DMX_PES_VIDEO3 dmx-pes-type-t
|
||||
replace symbol DMX_PES_TELETEXT3 dmx-pes-type-t
|
||||
replace symbol DMX_PES_SUBTITLE3 dmx-pes-type-t
|
||||
replace symbol DMX_PES_PCR3 dmx-pes-type-t
|
||||
replace symbol DMX_PES_OTHER dmx-pes-type-t
|
||||
|
||||
# Ignore obsolete symbols
|
||||
ignore define DMX_PES_AUDIO
|
||||
ignore define DMX_PES_VIDEO
|
||||
ignore define DMX_PES_TELETEXT
|
||||
ignore define DMX_PES_SUBTITLE
|
||||
ignore define DMX_PES_PCR
|
||||
|
||||
# dmx_input_t symbols
|
||||
replace enum dmx_input dmx-input-t
|
||||
replace symbol DMX_IN_FRONTEND dmx-input-t
|
||||
replace symbol DMX_IN_DVR dmx-input-t
|
||||
|
||||
# dmx_source_t symbols
|
||||
replace enum dmx_source dmx-source-t
|
||||
replace symbol DMX_SOURCE_FRONT0 dmx-source-t
|
||||
replace symbol DMX_SOURCE_FRONT1 dmx-source-t
|
||||
replace symbol DMX_SOURCE_FRONT2 dmx-source-t
|
||||
replace symbol DMX_SOURCE_FRONT3 dmx-source-t
|
||||
replace symbol DMX_SOURCE_DVR0 dmx-source-t
|
||||
replace symbol DMX_SOURCE_DVR1 dmx-source-t
|
||||
replace symbol DMX_SOURCE_DVR2 dmx-source-t
|
||||
replace symbol DMX_SOURCE_DVR3 dmx-source-t
|
||||
|
||||
|
||||
# Flags for struct dmx_sct_filter_params
|
||||
replace define DMX_CHECK_CRC dmx-sct-filter-params
|
||||
replace define DMX_ONESHOT dmx-sct-filter-params
|
||||
replace define DMX_IMMEDIATE_START dmx-sct-filter-params
|
||||
replace define DMX_KERNEL_CLIENT dmx-sct-filter-params
|
||||
|
||||
# some typedefs should point to struct/enums
|
||||
replace typedef dmx_caps_t dmx-caps
|
||||
replace typedef dmx_filter_t dmx-filter
|
||||
|
|
@ -0,0 +1,267 @@
|
|||
HOWTO: Get An Avermedia DVB-T working under Linux
|
||||
-------------------------------------------------
|
||||
|
||||
February 14th 2006
|
||||
|
||||
.. note::
|
||||
|
||||
This documentation is outdated. Please check at the DVB wiki
|
||||
at https://linuxtv.org/wiki for more updated info.
|
||||
|
||||
There's a section there specific for Avermedia boards at:
|
||||
https://linuxtv.org/wiki/index.php/AVerMedia
|
||||
|
||||
|
||||
Assumptions and Introduction
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
It is assumed that the reader understands the basic structure
|
||||
of the Linux Kernel DVB drivers and the general principles of
|
||||
Digital TV.
|
||||
|
||||
One significant difference between Digital TV and Analogue TV
|
||||
that the unwary (like myself) should consider is that,
|
||||
although the component structure of budget DVB-T cards are
|
||||
substantially similar to Analogue TV cards, they function in
|
||||
substantially different ways.
|
||||
|
||||
The purpose of an Analogue TV is to receive and display an
|
||||
Analogue Television signal. An Analogue TV signal (otherwise
|
||||
known as composite video) is an analogue encoding of a
|
||||
sequence of image frames (25 per second) rasterised using an
|
||||
interlacing technique. Interlacing takes two fields to
|
||||
represent one frame. Computers today are at their best when
|
||||
dealing with digital signals, not analogue signals and a
|
||||
composite video signal is about as far removed from a digital
|
||||
data stream as you can get. Therefore, an Analogue TV card for
|
||||
a PC has the following purpose:
|
||||
|
||||
* Tune the receiver to receive a broadcast signal
|
||||
* demodulate the broadcast signal
|
||||
* demultiplex the analogue video signal and analogue audio
|
||||
signal. **NOTE:** some countries employ a digital audio signal
|
||||
embedded within the modulated composite analogue signal -
|
||||
NICAM.)
|
||||
* digitize the analogue video signal and make the resulting
|
||||
datastream available to the data bus.
|
||||
|
||||
The digital datastream from an Analogue TV card is generated
|
||||
by circuitry on the card and is often presented uncompressed.
|
||||
For a PAL TV signal encoded at a resolution of 768x576 24-bit
|
||||
color pixels over 25 frames per second - a fair amount of data
|
||||
is generated and must be processed by the PC before it can be
|
||||
displayed on the video monitor screen. Some Analogue TV cards
|
||||
for PCs have onboard MPEG2 encoders which permit the raw
|
||||
digital data stream to be presented to the PC in an encoded
|
||||
and compressed form - similar to the form that is used in
|
||||
Digital TV.
|
||||
|
||||
The purpose of a simple budget digital TV card (DVB-T,C or S)
|
||||
is to simply:
|
||||
|
||||
* Tune the received to receive a broadcast signal.
|
||||
* Extract the encoded digital datastream from the broadcast
|
||||
signal.
|
||||
* Make the encoded digital datastream (MPEG2) available to
|
||||
the data bus.
|
||||
|
||||
The significant difference between the two is that the tuner
|
||||
on the analogue TV card spits out an Analogue signal, whereas
|
||||
the tuner on the digital TV card spits out a compressed
|
||||
encoded digital datastream. As the signal is already
|
||||
digitised, it is trivial to pass this datastream to the PC
|
||||
databus with minimal additional processing and then extract
|
||||
the digital video and audio datastreams passing them to the
|
||||
appropriate software or hardware for decoding and viewing.
|
||||
|
||||
The Avermedia DVB-T
|
||||
~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
The Avermedia DVB-T is a budget PCI DVB card. It has 3 inputs:
|
||||
|
||||
* RF Tuner Input
|
||||
* Composite Video Input (RCA Jack)
|
||||
* SVIDEO Input (Mini-DIN)
|
||||
|
||||
The RF Tuner Input is the input to the tuner module of the
|
||||
card. The Tuner is otherwise known as the "Frontend" . The
|
||||
Frontend of the Avermedia DVB-T is a Microtune 7202D. A timely
|
||||
post to the linux-dvb mailing list ascertained that the
|
||||
Microtune 7202D is supported by the sp887x driver which is
|
||||
found in the dvb-hw CVS module.
|
||||
|
||||
The DVB-T card is based around the BT878 chip which is a very
|
||||
common multimedia bridge and often found on Analogue TV cards.
|
||||
There is no on-board MPEG2 decoder, which means that all MPEG2
|
||||
decoding must be done in software, or if you have one, on an
|
||||
MPEG2 hardware decoding card or chipset.
|
||||
|
||||
|
||||
Getting the card going
|
||||
~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
In order to fire up the card, it is necessary to load a number
|
||||
of modules from the DVB driver set. Prior to this it will have
|
||||
been necessary to download these drivers from the linuxtv CVS
|
||||
server and compile them successfully.
|
||||
|
||||
Depending on the card's feature set, the Device Driver API for
|
||||
DVB under Linux will expose some of the following device files
|
||||
in the /dev tree:
|
||||
|
||||
* /dev/dvb/adapter0/audio0
|
||||
* /dev/dvb/adapter0/ca0
|
||||
* /dev/dvb/adapter0/demux0
|
||||
* /dev/dvb/adapter0/dvr0
|
||||
* /dev/dvb/adapter0/frontend0
|
||||
* /dev/dvb/adapter0/net0
|
||||
* /dev/dvb/adapter0/osd0
|
||||
* /dev/dvb/adapter0/video0
|
||||
|
||||
The primary device nodes that we are interested in (at this
|
||||
stage) for the Avermedia DVB-T are:
|
||||
|
||||
* /dev/dvb/adapter0/dvr0
|
||||
* /dev/dvb/adapter0/frontend0
|
||||
|
||||
The dvr0 device node is used to read the MPEG2 Data Stream and
|
||||
the frontend0 node is used to tune the frontend tuner module.
|
||||
|
||||
At this stage, it has not been able to ascertain the
|
||||
functionality of the remaining device nodes in respect of the
|
||||
Avermedia DVBT. However, full functionality in respect of
|
||||
tuning, receiving and supplying the MPEG2 data stream is
|
||||
possible with the currently available versions of the driver.
|
||||
It may be possible that additional functionality is available
|
||||
from the card (i.e. viewing the additional analogue inputs
|
||||
that the card presents), but this has not been tested yet. If
|
||||
I get around to this, I'll update the document with whatever I
|
||||
find.
|
||||
|
||||
To power up the card, load the following modules in the
|
||||
following order:
|
||||
|
||||
* modprobe bttv (normally loaded automatically)
|
||||
* modprobe dvb-bt8xx (or place dvb-bt8xx in /etc/modules)
|
||||
|
||||
Insertion of these modules into the running kernel will
|
||||
activate the appropriate DVB device nodes. It is then possible
|
||||
to start accessing the card with utilities such as scan, tzap,
|
||||
dvbstream etc.
|
||||
|
||||
The frontend module sp887x.o, requires an external firmware.
|
||||
Please use the command "get_dvb_firmware sp887x" to download
|
||||
it. Then copy it to /usr/lib/hotplug/firmware or /lib/firmware/
|
||||
(depending on configuration of firmware hotplug).
|
||||
|
||||
Receiving DVB-T in Australia
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
I have no experience of DVB-T in other countries other than
|
||||
Australia, so I will attempt to explain how it works here in
|
||||
Melbourne and how this affects the configuration of the DVB-T
|
||||
card.
|
||||
|
||||
The Digital Broadcasting Australia website has a Reception
|
||||
locatortool which provides information on transponder channels
|
||||
and frequencies. My local transmitter happens to be Mount
|
||||
Dandenong.
|
||||
|
||||
The frequencies broadcast by Mount Dandenong are:
|
||||
|
||||
Table 1. Transponder Frequencies Mount Dandenong, Vic, Aus.
|
||||
Broadcaster Channel Frequency
|
||||
ABC VHF 12 226.5 MHz
|
||||
TEN VHF 11 219.5 MHz
|
||||
NINE VHF 8 191.625 MHz
|
||||
SEVEN VHF 6 177.5 MHz
|
||||
SBS UHF 29 536.5 MHz
|
||||
|
||||
The Scan utility has a set of compiled-in defaults for various
|
||||
countries and regions, but if they do not suit, or if you have
|
||||
a pre-compiled scan binary, you can specify a data file on the
|
||||
command line which contains the transponder frequencies. Here
|
||||
is a sample file for the above channel transponders:
|
||||
|
||||
::
|
||||
|
||||
# Data file for DVB scan program
|
||||
#
|
||||
# C Frequency SymbolRate FEC QAM
|
||||
# S Frequency Polarisation SymbolRate FEC
|
||||
# T Frequency Bandwidth FEC FEC2 QAM Mode Guard Hier
|
||||
T 226500000 7MHz 2/3 NONE QAM64 8k 1/8 NONE
|
||||
T 191625000 7MHz 2/3 NONE QAM64 8k 1/8 NONE
|
||||
T 219500000 7MHz 2/3 NONE QAM64 8k 1/8 NONE
|
||||
T 177500000 7MHz 2/3 NONE QAM64 8k 1/8 NONE
|
||||
T 536500000 7MHz 2/3 NONE QAM64 8k 1/8 NONE
|
||||
|
||||
The defaults for the transponder frequency and other
|
||||
modulation parameters were obtained from www.dba.org.au.
|
||||
|
||||
When Scan runs, it will output channels.conf information for
|
||||
any channel's transponders which the card's frontend can lock
|
||||
onto. (i.e. any whose signal is strong enough at your
|
||||
antenna).
|
||||
|
||||
Here's my channels.conf file for anyone who's interested:
|
||||
|
||||
::
|
||||
|
||||
ABC HDTV:226500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:2307:0:560
|
||||
ABC TV Melbourne:226500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:561
|
||||
ABC TV 2:226500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:562
|
||||
ABC TV 3:226500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:563
|
||||
ABC TV 4:226500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:564
|
||||
ABC DiG Radio:226500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:0:2311:566
|
||||
TEN Digital:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:1585
|
||||
TEN Digital 1:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:1586
|
||||
TEN Digital 2:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:1587
|
||||
TEN Digital 3:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:1588
|
||||
TEN Digital:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:1589
|
||||
TEN Digital 4:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:1590
|
||||
TEN Digital:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:1591
|
||||
TEN HD:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:514:0:1592
|
||||
TEN Digital:219500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:650:1593
|
||||
Nine Digital:191625000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:513:660:1072
|
||||
Nine Digital HD:191625000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:512:0:1073
|
||||
Nine Guide:191625000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_3_4:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE:514:670:1074
|
||||
7 Digital:177500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:769:770:1328
|
||||
7 Digital 1:177500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:769:770:1329
|
||||
7 Digital 2:177500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:769:770:1330
|
||||
7 Digital 3:177500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:769:770:1331
|
||||
7 HD Digital:177500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:833:834:1332
|
||||
7 Program Guide:177500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:865:866:1334
|
||||
SBS HD:536500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:102:103:784
|
||||
SBS DIGITAL 1:536500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:161:81:785
|
||||
SBS DIGITAL 2:536500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:162:83:786
|
||||
SBS EPG:536500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:163:85:787
|
||||
SBS RADIO 1:536500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:0:201:798
|
||||
SBS RADIO 2:536500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_2_3:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:0:202:799
|
||||
|
||||
Known Limitations
|
||||
~~~~~~~~~~~~~~~~~
|
||||
|
||||
At present I can say with confidence that the frontend tunes
|
||||
via /dev/dvb/adapter{x}/frontend0 and supplies an MPEG2 stream
|
||||
via /dev/dvb/adapter{x}/dvr0. I have not tested the
|
||||
functionality of any other part of the card yet. I will do so
|
||||
over time and update this document.
|
||||
|
||||
There are some limitations in the i2c layer due to a returned
|
||||
error message inconsistency. Although this generates errors in
|
||||
dmesg and the system logs, it does not appear to affect the
|
||||
ability of the frontend to function correctly.
|
||||
|
||||
Further Update
|
||||
~~~~~~~~~~~~~~
|
||||
|
||||
dvbstream and VideoLAN Client on windows works a treat with
|
||||
DVB, in fact this is currently serving as my main way of
|
||||
viewing DVB-T at the moment. Additionally, VLC is happily
|
||||
decoding HDTV signals, although the PC is dropping the odd
|
||||
frame here and there - I assume due to processing capability -
|
||||
as all the decoding is being done under windows in software.
|
||||
|
||||
Many thanks to Nigel Pearson for the updates to this document
|
||||
since the recent revision of the driver.
|
||||
|
|
@ -0,0 +1,122 @@
|
|||
How to get the bt8xx cards working
|
||||
==================================
|
||||
|
||||
Authors: Richard Walker,
|
||||
Jamie Honan,
|
||||
Michael Hunold,
|
||||
Manu Abraham,
|
||||
Uwe Bugla,
|
||||
Michael Krufky
|
||||
|
||||
.. note::
|
||||
|
||||
This documentation is outdated. Please check at the DVB wiki
|
||||
at https://linuxtv.org/wiki for more updated info.
|
||||
|
||||
General information
|
||||
-------------------
|
||||
|
||||
This class of cards has a bt878a as the PCI interface, and require the bttv driver
|
||||
for accessing the i2c bus and the gpio pins of the bt8xx chipset.
|
||||
Please see Documentation/dvb/cards.txt => o Cards based on the Conexant Bt8xx PCI bridge:
|
||||
|
||||
Compiling kernel please enable:
|
||||
|
||||
#) ``Device drivers`` => ``Multimedia devices`` => ``Video For Linux`` => ``Enable Video for Linux API 1 (DEPRECATED)``
|
||||
#) ``Device drivers`` => ``Multimedia devices`` => ``Video For Linux`` => ``Video Capture Adapters`` => ``BT848 Video For Linux``
|
||||
#) ``Device drivers`` => ``Multimedia devices`` => ``Digital Video Broadcasting Devices`` => ``DVB for Linux`` ``DVB Core Support`` ``Bt8xx based PCI Cards``
|
||||
|
||||
Please use the following options with care as deselection of drivers which are in fact necessary may result in DVB devices that cannot be tuned due to lack of driver support:
|
||||
You can save RAM by deselecting every frontend module that your DVB card does not need.
|
||||
|
||||
First please remove the static dependency of DVB card drivers on all frontend modules for all possible card variants by enabling:
|
||||
|
||||
#) ``Device drivers`` => ``Multimedia devices`` => ``Digital Video Broadcasting Devices`` => ``DVB for Linux`` ``DVB Core Support`` ``Load and attach frontend modules as needed``
|
||||
|
||||
If you know the frontend driver that your card needs please enable:
|
||||
|
||||
#) ``Device drivers`` => ``Multimedia devices`` => ``Digital Video Broadcasting Devices`` => ``DVB for Linux`` ``DVB Core Support`` ``Customise DVB Frontends`` => ``Customise the frontend modules to build``
|
||||
|
||||
Then please select your card-specific frontend module.
|
||||
|
||||
Loading Modules
|
||||
---------------
|
||||
|
||||
Regular case: If the bttv driver detects a bt8xx-based DVB card, all frontend and backend modules will be loaded automatically.
|
||||
Exceptions are:
|
||||
- Old TwinHan DST cards or clones with or without CA slot and not containing an Eeprom.
|
||||
People running udev please see Documentation/dvb/udev.txt.
|
||||
|
||||
In the following cases overriding the PCI type detection for dvb-bt8xx might be necessary:
|
||||
|
||||
Running TwinHan and Clones
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
$ modprobe bttv card=113
|
||||
$ modprobe dst
|
||||
|
||||
Useful parameters for verbosity level and debugging the dst module:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
verbose=0: messages are disabled
|
||||
1: only error messages are displayed
|
||||
2: notifications are displayed
|
||||
3: other useful messages are displayed
|
||||
4: debug setting
|
||||
dst_addons=0: card is a free to air (FTA) card only
|
||||
0x20: card has a conditional access slot for scrambled channels
|
||||
|
||||
The autodetected values are determined by the cards' "response string".
|
||||
In your logs see f. ex.: dst_get_device_id: Recognize [DSTMCI].
|
||||
For bug reports please send in a complete log with verbose=4 activated.
|
||||
Please also see Documentation/dvb/ci.txt.
|
||||
|
||||
Running multiple cards
|
||||
~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
Examples of card ID's:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
Pinnacle PCTV Sat: 94
|
||||
Nebula Electronics Digi TV: 104
|
||||
pcHDTV HD-2000 TV: 112
|
||||
Twinhan DST and clones: 113
|
||||
Avermedia AverTV DVB-T 771: 123
|
||||
Avermedia AverTV DVB-T 761: 124
|
||||
DViCO FusionHDTV DVB-T Lite: 128
|
||||
DViCO FusionHDTV 5 Lite: 135
|
||||
|
||||
.. note::
|
||||
|
||||
The order of the card ID should be uprising:
|
||||
|
||||
Example:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
$ modprobe bttv card=113 card=135
|
||||
|
||||
For a full list of card ID's please see Documentation/video4linux/CARDLIST.bttv.
|
||||
In case of further problems please subscribe and send questions to the mailing list: linux-dvb@linuxtv.org.
|
||||
|
||||
Probing the cards with broken PCI subsystem ID
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
There are some TwinHan cards that the EEPROM has become corrupted for some
|
||||
reason. The cards do not have correct PCI subsystem ID. But we can force
|
||||
probing the cards with broken PCI subsystem ID
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
$ echo 109e 0878 $subvendor $subdevice > \
|
||||
/sys/bus/pci/drivers/bt878/new_id
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
109e: PCI_VENDOR_ID_BROOKTREE
|
||||
0878: PCI_DEVICE_ID_BROOKTREE_878
|
||||
|
||||
|
|
@ -1,23 +1,36 @@
|
|||
Hardware supported by the linuxtv.org DVB drivers
|
||||
=================================================
|
||||
|
||||
Generally, the DVB hardware manufacturers frequently change the
|
||||
frontends (i.e. tuner / demodulator units) used, usually without
|
||||
changing the product name, revision number or specs. Some cards
|
||||
are also available in versions with different frontends for
|
||||
DVB-S/DVB-C/DVB-T. Thus the frontend drivers are listed separately.
|
||||
.. note::
|
||||
|
||||
Note 1: There is no guarantee that every frontend driver works
|
||||
out of the box with every card, because of different wiring.
|
||||
This documentation is outdated. Please check at the DVB wiki
|
||||
at https://linuxtv.org/wiki for more updated info.
|
||||
|
||||
Note 2: The demodulator chips can be used with a variety of
|
||||
tuner/PLL chips, and not all combinations are supported. Often
|
||||
the demodulator and tuner/PLL chip are inside a metal box for
|
||||
shielding, and the whole metal box has its own part number.
|
||||
Please look at
|
||||
https://linuxtv.org/wiki/index.php/Hardware_Device_Information
|
||||
for an updated list of supported cards.
|
||||
|
||||
Generally, the DVB hardware manufacturers frequently change the
|
||||
frontends (i.e. tuner / demodulator units) used, usually without
|
||||
changing the product name, revision number or specs. Some cards
|
||||
are also available in versions with different frontends for
|
||||
DVB-S/DVB-C/DVB-T. Thus the frontend drivers are listed separately.
|
||||
|
||||
.. note::
|
||||
|
||||
#) There is no guarantee that every frontend driver works
|
||||
out of the box with every card, because of different wiring.
|
||||
|
||||
#) The demodulator chips can be used with a variety of
|
||||
tuner/PLL chips, and not all combinations are supported. Often
|
||||
the demodulator and tuner/PLL chip are inside a metal box for
|
||||
shielding, and the whole metal box has its own part number.
|
||||
|
||||
|
||||
o Frontends drivers:
|
||||
- Frontends drivers:
|
||||
|
||||
- dvb_dummy_fe: for testing...
|
||||
|
||||
DVB-S:
|
||||
- ves1x93 : Alps BSRV2 (ves1893 demodulator) and dbox2 (ves1993)
|
||||
- cx24110 : Conexant HM1221/HM1811 (cx24110 or cx24106 demod, cx24108 PLL)
|
||||
|
|
@ -26,21 +39,23 @@ o Frontends drivers:
|
|||
- stv0299 : Alps BSRU6 (tsa5059 PLL), LG TDQB-S00x (tsa5059 PLL),
|
||||
LG TDQF-S001F (sl1935 PLL), Philips SU1278 (tua6100 PLL),
|
||||
Philips SU1278SH (tsa5059 PLL), Samsung TBMU24112IMB, Technisat Sky2Pc with bios Rev. 2.6
|
||||
|
||||
DVB-C:
|
||||
- ves1820 : various (ves1820 demodulator, sp5659c or spXXXX PLL)
|
||||
- at76c651 : Atmel AT76c651(B) with DAT7021 PLL
|
||||
|
||||
DVB-T:
|
||||
- alps_tdlb7 : Alps TDLB7 (sp8870 demodulator, sp5659 PLL)
|
||||
- alps_tdmb7 : Alps TDMB7 (cx22700 demodulator)
|
||||
- grundig_29504-401 : Grundig 29504-401 (LSI L64781 demodulator), tsa5060 PLL
|
||||
- tda1004x : Philips tda10045h (td1344 or tdm1316l PLL)
|
||||
- nxt6000 : Alps TDME7 (MITEL SP5659 PLL), Alps TDED4 (TI ALP510 PLL),
|
||||
Comtech DVBT-6k07 (SP5730 PLL)
|
||||
(NxtWave Communications NXT6000 demodulator)
|
||||
- nxt6000 : Alps TDME7 (MITEL SP5659 PLL), Alps TDED4 (TI ALP510 PLL), Comtech DVBT-6k07 (SP5730 PLL), (NxtWave Communications NXT6000 demodulator)
|
||||
- sp887x : Microtune 7202D
|
||||
- dib3000mb : DiBcom 3000-MB demodulator
|
||||
|
||||
DVB-S/C/T:
|
||||
- dst : TwinHan DST Frontend
|
||||
|
||||
ATSC:
|
||||
- nxt200x : Nxtwave NXT2002 & NXT2004
|
||||
- or51211 : or51211 based (pcHDTV HD2000 card)
|
||||
|
|
@ -49,10 +64,10 @@ o Frontends drivers:
|
|||
- lgdt330x : LG Electronics DT3302 & DT3303
|
||||
|
||||
|
||||
o Cards based on the Phillips saa7146 multimedia PCI bridge chip:
|
||||
- Cards based on the Phillips saa7146 multimedia PCI bridge chip:
|
||||
|
||||
- TI AV7110 based cards (i.e. with hardware MPEG decoder):
|
||||
- Siemens/Technotrend/Hauppauge PCI DVB card revision 1.1, 1.3, 1.5, 1.6, 2.1
|
||||
(aka Hauppauge Nexus)
|
||||
- Siemens/Technotrend/Hauppauge PCI DVB card revision 1.1, 1.3, 1.5, 1.6, 2.1 (aka Hauppauge Nexus)
|
||||
- "budget" cards (i.e. without hardware MPEG decoder):
|
||||
- Technotrend Budget / Hauppauge WinTV-Nova PCI Cards
|
||||
- SATELCO Multimedia PCI
|
||||
|
|
@ -60,10 +75,12 @@ o Cards based on the Phillips saa7146 multimedia PCI bridge chip:
|
|||
- Typhoon DVB-S budget
|
||||
- Fujitsu-Siemens Activy DVB-S budget card
|
||||
|
||||
o Cards based on the B2C2 Inc. FlexCopII/IIb/III:
|
||||
- Cards based on the B2C2 Inc. FlexCopII/IIb/III:
|
||||
|
||||
- Technisat SkyStar2 PCI DVB card revision 2.3, 2.6B, 2.6C
|
||||
|
||||
o Cards based on the Conexant Bt8xx PCI bridge:
|
||||
- Cards based on the Conexant Bt8xx PCI bridge:
|
||||
|
||||
- Pinnacle PCTV Sat DVB
|
||||
- Nebula Electronics DigiTV
|
||||
- TwinHan DST
|
||||
|
|
@ -73,11 +90,13 @@ o Cards based on the Conexant Bt8xx PCI bridge:
|
|||
- DViCO FusionHDTV DVB-T Lite
|
||||
- DViCO FusionHDTV5 Lite
|
||||
|
||||
o Technotrend / Hauppauge DVB USB devices:
|
||||
- Technotrend / Hauppauge DVB USB devices:
|
||||
|
||||
- Nova USB
|
||||
- DEC 2000-T, 3000-S, 2540-T
|
||||
|
||||
o DiBcom DVB-T USB based devices:
|
||||
- DiBcom DVB-T USB based devices:
|
||||
|
||||
- Twinhan VisionPlus VisionDTV USB-Ter DVB-T Device
|
||||
- HAMA DVB-T USB device
|
||||
- CTS Portable (Chinese Television System)
|
||||
|
|
@ -92,9 +111,10 @@ o DiBcom DVB-T USB based devices:
|
|||
- Yakumo DVB-T mobile USB2.0
|
||||
- DiBcom USB2.0 DVB-T reference device (non-public)
|
||||
|
||||
o Experimental support for the analog module of the Siemens DVB-C PCI card
|
||||
- Experimental support for the analog module of the Siemens DVB-C PCI card
|
||||
|
||||
- Cards based on the Conexant cx2388x PCI bridge:
|
||||
|
||||
o Cards based on the Conexant cx2388x PCI bridge:
|
||||
- ADS Tech Instant TV DVB-T PCI
|
||||
- ATI HDTV Wonder
|
||||
- digitalnow DNTV Live! DVB-T
|
||||
|
|
@ -109,7 +129,8 @@ o Cards based on the Conexant cx2388x PCI bridge:
|
|||
- TerraTec Cinergy 1400 DVB-T
|
||||
- WinFast DTV1000-T
|
||||
|
||||
o Cards based on the Phillips saa7134 PCI bridge:
|
||||
- Cards based on the Phillips saa7134 PCI bridge:
|
||||
|
||||
- Medion 7134
|
||||
- Pinnacle PCTV 300i DVB-T + PAL
|
||||
- LifeView FlyDVB-T DUO
|
||||
|
|
@ -1,52 +1,68 @@
|
|||
* For the user
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
NOTE: This document describes the usage of the high level CI API as
|
||||
Digital TV Conditional Access Interface (CI API)
|
||||
================================================
|
||||
|
||||
|
||||
.. note::
|
||||
|
||||
This documentation is outdated.
|
||||
|
||||
This document describes the usage of the high level CI API as
|
||||
in accordance to the Linux DVB API. This is a not a documentation for the,
|
||||
existing low level CI API.
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
To utilize the High Level CI capabilities,
|
||||
.. note::
|
||||
|
||||
(1*) This point is valid only for the Twinhan/clones
|
||||
For the Twinhan/Twinhan clones, the dst_ca module handles the CI
|
||||
hardware handling.This module is loaded automatically if a CI
|
||||
(Common Interface, that holds the CAM (Conditional Access Module)
|
||||
is detected.
|
||||
For the Twinhan/Twinhan clones, the dst_ca module handles the CI
|
||||
hardware handling.This module is loaded automatically if a CI
|
||||
(Common Interface, that holds the CAM (Conditional Access Module)
|
||||
is detected.
|
||||
|
||||
(2) one requires a userspace application, ca_zap. This small userland
|
||||
application is in charge of sending the descrambling related information
|
||||
to the CAM.
|
||||
ca_zap
|
||||
~~~~~~
|
||||
|
||||
An userspace application, like ``ca_zap`` is required to handle encrypted
|
||||
MPEG-TS streams.
|
||||
|
||||
The ``ca_zap`` userland application is in charge of sending the
|
||||
descrambling related information to the Conditional Access Module (CAM).
|
||||
|
||||
This application requires the following to function properly as of now.
|
||||
|
||||
(a) Tune to a valid channel, with szap.
|
||||
eg: $ szap -c channels.conf -r "TMC" -x
|
||||
a) Tune to a valid channel, with szap.
|
||||
|
||||
(b) a channels.conf containing a valid PMT PID
|
||||
eg: TMC:11996:h:0:27500:278:512:650:321
|
||||
eg: $ szap -c channels.conf -r "TMC" -x
|
||||
|
||||
here 278 is a valid PMT PID. the rest of the values are the
|
||||
same ones that szap uses.
|
||||
b) a channels.conf containing a valid PMT PID
|
||||
|
||||
(c) after running a szap, you have to run ca_zap, for the
|
||||
descrambler to function,
|
||||
eg: $ ca_zap channels.conf "TMC"
|
||||
eg: TMC:11996:h:0:27500:278:512:650:321
|
||||
|
||||
(d) Hopefully enjoy your favourite subscribed channel as you do with
|
||||
a FTA card.
|
||||
here 278 is a valid PMT PID. the rest of the values are the
|
||||
same ones that szap uses.
|
||||
|
||||
(3) Currently ca_zap, and dst_test, both are meant for demonstration
|
||||
c) after running a szap, you have to run ca_zap, for the
|
||||
descrambler to function,
|
||||
|
||||
eg: $ ca_zap channels.conf "TMC"
|
||||
|
||||
d) Hopefully enjoy your favourite subscribed channel as you do with
|
||||
a FTA card.
|
||||
|
||||
.. note::
|
||||
|
||||
Currently ca_zap, and dst_test, both are meant for demonstration
|
||||
purposes only, they can become full fledged applications if necessary.
|
||||
|
||||
|
||||
* Cards that fall in this category
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Cards that fall in this category
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
At present the cards that fall in this category are the Twinhan and its
|
||||
clones, these cards are available as VVMER, Tomato, Hercules, Orange and
|
||||
so on.
|
||||
|
||||
* CI modules that are supported
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
CI modules that are supported
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
The CI module support is largely dependent upon the firmware on the cards
|
||||
Some cards do support almost all of the available CI modules. There is
|
||||
nothing much that can be done in order to make additional CI modules
|
||||
|
|
@ -58,11 +74,12 @@ Modules that have been tested by this driver at present are
|
|||
(2) Viaccess from SCM
|
||||
(3) Dragoncam
|
||||
|
||||
* The High level CI API
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
The High level CI API
|
||||
~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
For the programmer
|
||||
^^^^^^^^^^^^^^^^^^
|
||||
|
||||
* For the programmer
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
With the High Level CI approach any new card with almost any random
|
||||
architecture can be implemented with this style, the definitions
|
||||
inside the switch statement can be easily adapted for any card, thereby
|
||||
|
|
@ -74,29 +91,30 @@ array to/from the CI ioctls as defined in the Linux DVB API. No changes
|
|||
have been made in the API to accommodate this feature.
|
||||
|
||||
|
||||
* Why the need for another CI interface ?
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Why the need for another CI interface?
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
This is one of the most commonly asked question. Well a nice question.
|
||||
Strictly speaking this is not a new interface.
|
||||
|
||||
The CI interface is defined in the DVB API in ca.h as
|
||||
The CI interface is defined in the DVB API in ca.h as:
|
||||
|
||||
typedef struct ca_slot_info {
|
||||
int num; /* slot number */
|
||||
.. code-block:: c
|
||||
|
||||
int type; /* CA interface this slot supports */
|
||||
#define CA_CI 1 /* CI high level interface */
|
||||
#define CA_CI_LINK 2 /* CI link layer level interface */
|
||||
#define CA_CI_PHYS 4 /* CI physical layer level interface */
|
||||
#define CA_DESCR 8 /* built-in descrambler */
|
||||
#define CA_SC 128 /* simple smart card interface */
|
||||
|
||||
unsigned int flags;
|
||||
#define CA_CI_MODULE_PRESENT 1 /* module (or card) inserted */
|
||||
#define CA_CI_MODULE_READY 2
|
||||
} ca_slot_info_t;
|
||||
typedef struct ca_slot_info {
|
||||
int num; /* slot number */
|
||||
|
||||
int type; /* CA interface this slot supports */
|
||||
#define CA_CI 1 /* CI high level interface */
|
||||
#define CA_CI_LINK 2 /* CI link layer level interface */
|
||||
#define CA_CI_PHYS 4 /* CI physical layer level interface */
|
||||
#define CA_DESCR 8 /* built-in descrambler */
|
||||
#define CA_SC 128 /* simple smart card interface */
|
||||
|
||||
unsigned int flags;
|
||||
#define CA_CI_MODULE_PRESENT 1 /* module (or card) inserted */
|
||||
#define CA_CI_MODULE_READY 2
|
||||
} ca_slot_info_t;
|
||||
|
||||
This CI interface follows the CI high level interface, which is not
|
||||
implemented by most applications. Hence this area is revisited.
|
||||
|
|
@ -113,7 +131,6 @@ means that no session management, link layer or a transport layer do
|
|||
exist in this case in the application to driver communication. It is
|
||||
as simple as that. The driver/hardware has to take care of that.
|
||||
|
||||
|
||||
With this High Level CI interface, the interface can be defined with the
|
||||
regular ioctls.
|
||||
|
||||
|
|
@ -129,34 +146,36 @@ All these ioctls are also valid for the High level CI interface
|
|||
#define CA_SET_PID _IOW('o', 135, ca_pid_t)
|
||||
|
||||
|
||||
On querying the device, the device yields information thus
|
||||
On querying the device, the device yields information thus:
|
||||
|
||||
CA_GET_SLOT_INFO
|
||||
----------------------------
|
||||
Command = [info]
|
||||
APP: Number=[1]
|
||||
APP: Type=[1]
|
||||
APP: flags=[1]
|
||||
APP: CI High level interface
|
||||
APP: CA/CI Module Present
|
||||
.. code-block:: none
|
||||
|
||||
CA_GET_CAP
|
||||
----------------------------
|
||||
Command = [caps]
|
||||
APP: Slots=[1]
|
||||
APP: Type=[1]
|
||||
APP: Descrambler keys=[16]
|
||||
APP: Type=[1]
|
||||
CA_GET_SLOT_INFO
|
||||
----------------------------
|
||||
Command = [info]
|
||||
APP: Number=[1]
|
||||
APP: Type=[1]
|
||||
APP: flags=[1]
|
||||
APP: CI High level interface
|
||||
APP: CA/CI Module Present
|
||||
|
||||
CA_SEND_MSG
|
||||
----------------------------
|
||||
Descriptors(Program Level)=[ 09 06 06 04 05 50 ff f1]
|
||||
Found CA descriptor @ program level
|
||||
CA_GET_CAP
|
||||
----------------------------
|
||||
Command = [caps]
|
||||
APP: Slots=[1]
|
||||
APP: Type=[1]
|
||||
APP: Descrambler keys=[16]
|
||||
APP: Type=[1]
|
||||
|
||||
(20) ES type=[2] ES pid=[201] ES length =[0 (0x0)]
|
||||
(25) ES type=[4] ES pid=[301] ES length =[0 (0x0)]
|
||||
ca_message length is 25 (0x19) bytes
|
||||
EN50221 CA MSG=[ 9f 80 32 19 03 01 2d d1 f0 08 01 09 06 06 04 05 50 ff f1 02 e0 c9 00 00 04 e1 2d 00 00]
|
||||
CA_SEND_MSG
|
||||
----------------------------
|
||||
Descriptors(Program Level)=[ 09 06 06 04 05 50 ff f1]
|
||||
Found CA descriptor @ program level
|
||||
|
||||
(20) ES type=[2] ES pid=[201] ES length =[0 (0x0)]
|
||||
(25) ES type=[4] ES pid=[301] ES length =[0 (0x0)]
|
||||
ca_message length is 25 (0x19) bytes
|
||||
EN50221 CA MSG=[ 9f 80 32 19 03 01 2d d1 f0 08 01 09 06 06 04 05 50 ff f1 02 e0 c9 00 00 04 e1 2d 00 00]
|
||||
|
||||
|
||||
Not all ioctl's are implemented in the driver from the API, the other
|
||||
|
|
@ -164,21 +183,20 @@ features of the hardware that cannot be implemented by the API are achieved
|
|||
using the CA_GET_MSG and CA_SEND_MSG ioctls. An EN50221 style wrapper is
|
||||
used to exchange the data to maintain compatibility with other hardware.
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
/* a message to/from a CI-CAM */
|
||||
typedef struct ca_msg {
|
||||
unsigned int index;
|
||||
unsigned int type;
|
||||
unsigned int length;
|
||||
unsigned char msg[256];
|
||||
} ca_msg_t;
|
||||
/* a message to/from a CI-CAM */
|
||||
typedef struct ca_msg {
|
||||
unsigned int index;
|
||||
unsigned int type;
|
||||
unsigned int length;
|
||||
unsigned char msg[256];
|
||||
} ca_msg_t;
|
||||
|
||||
|
||||
The flow of data can be described thus,
|
||||
|
||||
|
||||
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
App (User)
|
||||
-----
|
||||
|
|
@ -0,0 +1,129 @@
|
|||
Contributors
|
||||
============
|
||||
|
||||
.. note::
|
||||
|
||||
This documentation is outdated. There are several other DVB contributors
|
||||
that aren't listed below.
|
||||
|
||||
Thanks go to the following people for patches and contributions:
|
||||
|
||||
- Michael Hunold <m.hunold@gmx.de>
|
||||
|
||||
- for the initial saa7146 driver and its recent overhaul
|
||||
|
||||
- Christian Theiss
|
||||
|
||||
- for his work on the initial Linux DVB driver
|
||||
|
||||
- Marcus Metzler <mocm@metzlerbros.de> and
|
||||
Ralph Metzler <rjkm@metzlerbros.de>
|
||||
|
||||
- for their continuing work on the DVB driver
|
||||
|
||||
- Michael Holzt <kju@debian.org>
|
||||
|
||||
- for his contributions to the dvb-net driver
|
||||
|
||||
- Diego Picciani <d.picciani@novacomp.it>
|
||||
|
||||
- for CyberLogin for Linux which allows logging onto EON
|
||||
(in case you are wondering where CyberLogin is, EON changed its login
|
||||
procedure and CyberLogin is no longer used.)
|
||||
|
||||
- Martin Schaller <martin@smurf.franken.de>
|
||||
|
||||
- for patching the cable card decoder driver
|
||||
|
||||
- Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>
|
||||
|
||||
- for various fixes regarding tuning, OSD and CI stuff and his work on VDR
|
||||
|
||||
- Steve Brown <sbrown@cortland.com>
|
||||
|
||||
- for his AFC kernel thread
|
||||
|
||||
- Christoph Martin <martin@uni-mainz.de>
|
||||
|
||||
- for his LIRC infrared handler
|
||||
|
||||
- Andreas Oberritter <obi@linuxtv.org>,
|
||||
Dennis Noermann <dennis.noermann@noernet.de>,
|
||||
Felix Domke <tmbinc@elitedvb.net>,
|
||||
Florian Schirmer <jolt@tuxbox.org>,
|
||||
Ronny Strutz <3des@elitedvb.de>,
|
||||
Wolfram Joost <dbox2@frokaschwei.de>
|
||||
and all the other dbox2 people
|
||||
|
||||
- for many bugfixes in the generic DVB Core, frontend drivers and
|
||||
their work on the dbox2 port of the DVB driver
|
||||
|
||||
- Oliver Endriss <o.endriss@gmx.de>
|
||||
|
||||
- for many bugfixes
|
||||
|
||||
- Andrew de Quincey <adq_dvb@lidskialf.net>
|
||||
|
||||
- for the tda1004x frontend driver, and various bugfixes
|
||||
|
||||
- Peter Schildmann <peter.schildmann@web.de>
|
||||
|
||||
- for the driver for the Technisat SkyStar2 PCI DVB card
|
||||
|
||||
- Vadim Catana <skystar@moldova.cc>,
|
||||
Roberto Ragusa <r.ragusa@libero.it> and
|
||||
Augusto Cardoso <augusto@carhil.net>
|
||||
|
||||
- for all the work for the FlexCopII chipset by B2C2,Inc.
|
||||
|
||||
- Davor Emard <emard@softhome.net>
|
||||
|
||||
- for his work on the budget drivers, the demux code,
|
||||
the module unloading problems, ...
|
||||
|
||||
- Hans-Frieder Vogt <hfvogt@arcor.de>
|
||||
|
||||
- for his work on calculating and checking the crc's for the
|
||||
TechnoTrend/Hauppauge DEC driver firmware
|
||||
|
||||
- Michael Dreher <michael@5dot1.de> and
|
||||
Andreas 'randy' Weinberger
|
||||
|
||||
- for the support of the Fujitsu-Siemens Activy budget DVB-S
|
||||
|
||||
- Kenneth Aafløy <ke-aa@frisurf.no>
|
||||
|
||||
- for adding support for Typhoon DVB-S budget card
|
||||
|
||||
- Ernst Peinlich <e.peinlich@inode.at>
|
||||
|
||||
- for tuning/DiSEqC support for the DEC 3000-s
|
||||
|
||||
- Peter Beutner <p.beutner@gmx.net>
|
||||
|
||||
- for the IR code for the ttusb-dec driver
|
||||
|
||||
- Wilson Michaels <wilsonmichaels@earthlink.net>
|
||||
|
||||
- for the lgdt330x frontend driver, and various bugfixes
|
||||
|
||||
- Michael Krufky <mkrufky@linuxtv.org>
|
||||
|
||||
- for maintaining v4l/dvb inter-tree dependencies
|
||||
|
||||
- Taylor Jacob <rtjacob@earthlink.net>
|
||||
|
||||
- for the nxt2002 frontend driver
|
||||
|
||||
- Jean-Francois Thibert <jeanfrancois@sagetv.com>
|
||||
|
||||
- for the nxt2004 frontend driver
|
||||
|
||||
- Kirk Lapray <kirk.lapray@gmail.com>
|
||||
|
||||
- for the or51211 and or51132 frontend drivers, and
|
||||
for merging the nxt2002 and nxt2004 modules into a
|
||||
single nxt200x frontend driver.
|
||||
|
||||
(If you think you should be in this list, but you are not, drop a
|
||||
line to the DVB mailing list)
|
||||
|
|
@ -0,0 +1,355 @@
|
|||
Idea behind the dvb-usb-framework
|
||||
=================================
|
||||
|
||||
.. note::
|
||||
|
||||
#) This documentation is outdated. Please check at the DVB wiki
|
||||
at https://linuxtv.org/wiki for more updated info.
|
||||
|
||||
#) **deprecated:** Newer DVB USB drivers should use the dvb-usb-v2 framework.
|
||||
|
||||
In March 2005 I got the new Twinhan USB2.0 DVB-T device. They provided specs
|
||||
and a firmware.
|
||||
|
||||
Quite keen I wanted to put the driver (with some quirks of course) into dibusb.
|
||||
After reading some specs and doing some USB snooping, it realized, that the
|
||||
dibusb-driver would be a complete mess afterwards. So I decided to do it in a
|
||||
different way: With the help of a dvb-usb-framework.
|
||||
|
||||
The framework provides generic functions (mostly kernel API calls), such as:
|
||||
|
||||
- Transport Stream URB handling in conjunction with dvb-demux-feed-control
|
||||
(bulk and isoc are supported)
|
||||
- registering the device for the DVB-API
|
||||
- registering an I2C-adapter if applicable
|
||||
- remote-control/input-device handling
|
||||
- firmware requesting and loading (currently just for the Cypress USB
|
||||
controllers)
|
||||
- other functions/methods which can be shared by several drivers (such as
|
||||
functions for bulk-control-commands)
|
||||
- TODO: a I2C-chunker. It creates device-specific chunks of register-accesses
|
||||
depending on length of a register and the number of values that can be
|
||||
multi-written and multi-read.
|
||||
|
||||
The source code of the particular DVB USB devices does just the communication
|
||||
with the device via the bus. The connection between the DVB-API-functionality
|
||||
is done via callbacks, assigned in a static device-description (struct
|
||||
dvb_usb_device) each device-driver has to have.
|
||||
|
||||
For an example have a look in drivers/media/usb/dvb-usb/vp7045*.
|
||||
|
||||
Objective is to migrate all the usb-devices (dibusb, cinergyT2, maybe the
|
||||
ttusb; flexcop-usb already benefits from the generic flexcop-device) to use
|
||||
the dvb-usb-lib.
|
||||
|
||||
TODO: dynamic enabling and disabling of the pid-filter in regard to number of
|
||||
feeds requested.
|
||||
|
||||
Supported devices
|
||||
-----------------
|
||||
|
||||
See the LinuxTV DVB Wiki at https://linuxtv.org for a complete list of
|
||||
cards/drivers/firmwares:
|
||||
https://linuxtv.org/wiki/index.php/DVB_USB
|
||||
|
||||
0. History & News:
|
||||
|
||||
2005-06-30
|
||||
|
||||
- added support for WideView WT-220U (Thanks to Steve Chang)
|
||||
|
||||
2005-05-30
|
||||
|
||||
- added basic isochronous support to the dvb-usb-framework
|
||||
- added support for Conexant Hybrid reference design and Nebula
|
||||
DigiTV USB
|
||||
|
||||
2005-04-17
|
||||
|
||||
- all dibusb devices ported to make use of the dvb-usb-framework
|
||||
|
||||
2005-04-02
|
||||
|
||||
- re-enabled and improved remote control code.
|
||||
|
||||
2005-03-31
|
||||
|
||||
- ported the Yakumo/Hama/Typhoon DVB-T USB2.0 device to dvb-usb.
|
||||
|
||||
2005-03-30
|
||||
|
||||
- first commit of the dvb-usb-module based on the dibusb-source.
|
||||
First device is a new driver for the
|
||||
TwinhanDTV Alpha / MagicBox II USB2.0-only DVB-T device.
|
||||
- (change from dvb-dibusb to dvb-usb)
|
||||
|
||||
2005-03-28
|
||||
|
||||
- added support for the AVerMedia AverTV DVB-T USB2.0 device
|
||||
(Thanks to Glen Harris and Jiun-Kuei Jung, AVerMedia)
|
||||
|
||||
2005-03-14
|
||||
|
||||
- added support for the Typhoon/Yakumo/HAMA DVB-T mobile USB2.0
|
||||
|
||||
2005-02-11
|
||||
|
||||
- added support for the KWorld/ADSTech Instant DVB-T USB2.0.
|
||||
Thanks a lot to Joachim von Caron
|
||||
|
||||
2005-02-02
|
||||
- added support for the Hauppauge Win-TV Nova-T USB2
|
||||
|
||||
2005-01-31
|
||||
- distorted streaming is gone for USB1.1 devices
|
||||
|
||||
2005-01-13
|
||||
|
||||
- moved the mirrored pid_filter_table back to dvb-dibusb
|
||||
first almost working version for HanfTek UMT-010
|
||||
found out, that Yakumo/HAMA/Typhoon are predecessors of the HanfTek UMT-010
|
||||
|
||||
2005-01-10
|
||||
|
||||
- refactoring completed, now everything is very delightful
|
||||
|
||||
- tuner quirks for some weird devices (Artec T1 AN2235 device has sometimes a
|
||||
Panasonic Tuner assembled). Tunerprobing implemented.
|
||||
Thanks a lot to Gunnar Wittich.
|
||||
|
||||
2004-12-29
|
||||
|
||||
- after several days of struggling around bug of no returning URBs fixed.
|
||||
|
||||
2004-12-26
|
||||
|
||||
- refactored the dibusb-driver, splitted into separate files
|
||||
- i2c-probing enabled
|
||||
|
||||
2004-12-06
|
||||
|
||||
- possibility for demod i2c-address probing
|
||||
- new usb IDs (Compro, Artec)
|
||||
|
||||
2004-11-23
|
||||
|
||||
- merged changes from DiB3000MC_ver2.1
|
||||
- revised the debugging
|
||||
- possibility to deliver the complete TS for USB2.0
|
||||
|
||||
2004-11-21
|
||||
|
||||
- first working version of the dib3000mc/p frontend driver.
|
||||
|
||||
2004-11-12
|
||||
|
||||
- added additional remote control keys. Thanks to Uwe Hanke.
|
||||
|
||||
2004-11-07
|
||||
|
||||
- added remote control support. Thanks to David Matthews.
|
||||
|
||||
2004-11-05
|
||||
|
||||
- added support for a new devices (Grandtec/Avermedia/Artec)
|
||||
- merged my changes (for dib3000mb/dibusb) to the FE_REFACTORING, because it became HEAD
|
||||
- moved transfer control (pid filter, fifo control) from usb driver to frontend, it seems
|
||||
better settled there (added xfer_ops-struct)
|
||||
- created a common files for frontends (mc/p/mb)
|
||||
|
||||
2004-09-28
|
||||
|
||||
- added support for a new device (Unknown, vendor ID is Hyper-Paltek)
|
||||
|
||||
2004-09-20
|
||||
|
||||
- added support for a new device (Compro DVB-U2000), thanks
|
||||
to Amaury Demol for reporting
|
||||
- changed usb TS transfer method (several urbs, stopping transfer
|
||||
before setting a new pid)
|
||||
|
||||
2004-09-13
|
||||
|
||||
- added support for a new device (Artec T1 USB TVBOX), thanks
|
||||
to Christian Motschke for reporting
|
||||
|
||||
2004-09-05
|
||||
|
||||
- released the dibusb device and dib3000mb-frontend driver
|
||||
(old news for vp7041.c)
|
||||
|
||||
2004-07-15
|
||||
|
||||
- found out, by accident, that the device has a TUA6010XS for PLL
|
||||
|
||||
2004-07-12
|
||||
|
||||
- figured out, that the driver should also work with the
|
||||
CTS Portable (Chinese Television System)
|
||||
|
||||
2004-07-08
|
||||
|
||||
- firmware-extraction-2.422-problem solved, driver is now working
|
||||
properly with firmware extracted from 2.422
|
||||
- #if for 2.6.4 (dvb), compile issue
|
||||
- changed firmware handling, see vp7041.txt sec 1.1
|
||||
|
||||
2004-07-02
|
||||
|
||||
- some tuner modifications, v0.1, cleanups, first public
|
||||
|
||||
2004-06-28
|
||||
|
||||
- now using the dvb_dmx_swfilter_packets, everything runs fine now
|
||||
|
||||
2004-06-27
|
||||
|
||||
- able to watch and switching channels (pre-alpha)
|
||||
- no section filtering yet
|
||||
|
||||
2004-06-06
|
||||
|
||||
- first TS received, but kernel oops :/
|
||||
|
||||
2004-05-14
|
||||
|
||||
- firmware loader is working
|
||||
|
||||
2004-05-11
|
||||
|
||||
- start writing the driver
|
||||
|
||||
How to use?
|
||||
-----------
|
||||
|
||||
Firmware
|
||||
~~~~~~~~
|
||||
|
||||
Most of the USB drivers need to download a firmware to the device before start
|
||||
working.
|
||||
|
||||
Have a look at the Wikipage for the DVB-USB-drivers to find out, which firmware
|
||||
you need for your device:
|
||||
|
||||
https://linuxtv.org/wiki/index.php/DVB_USB
|
||||
|
||||
Compiling
|
||||
~~~~~~~~~
|
||||
|
||||
Since the driver is in the linux kernel, activating the driver in
|
||||
your favorite config-environment should sufficient. I recommend
|
||||
to compile the driver as module. Hotplug does the rest.
|
||||
|
||||
If you use dvb-kernel enter the build-2.6 directory run 'make' and 'insmod.sh
|
||||
load' afterwards.
|
||||
|
||||
Loading the drivers
|
||||
~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
Hotplug is able to load the driver, when it is needed (because you plugged
|
||||
in the device).
|
||||
|
||||
If you want to enable debug output, you have to load the driver manually and
|
||||
from within the dvb-kernel cvs repository.
|
||||
|
||||
first have a look, which debug level are available:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
# modinfo dvb-usb
|
||||
# modinfo dvb-usb-vp7045
|
||||
|
||||
etc.
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
modprobe dvb-usb debug=<level>
|
||||
modprobe dvb-usb-vp7045 debug=<level>
|
||||
etc.
|
||||
|
||||
should do the trick.
|
||||
|
||||
When the driver is loaded successfully, the firmware file was in
|
||||
the right place and the device is connected, the "Power"-LED should be
|
||||
turned on.
|
||||
|
||||
At this point you should be able to start a dvb-capable application. I'm use
|
||||
(t|s)zap, mplayer and dvbscan to test the basics. VDR-xine provides the
|
||||
long-term test scenario.
|
||||
|
||||
Known problems and bugs
|
||||
-----------------------
|
||||
|
||||
- Don't remove the USB device while running an DVB application, your system
|
||||
will go crazy or die most likely.
|
||||
|
||||
Adding support for devices
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
TODO
|
||||
|
||||
USB1.1 Bandwidth limitation
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
A lot of the currently supported devices are USB1.1 and thus they have a
|
||||
maximum bandwidth of about 5-6 MBit/s when connected to a USB2.0 hub.
|
||||
This is not enough for receiving the complete transport stream of a
|
||||
DVB-T channel (which is about 16 MBit/s). Normally this is not a
|
||||
problem, if you only want to watch TV (this does not apply for HDTV),
|
||||
but watching a channel while recording another channel on the same
|
||||
frequency simply does not work very well. This applies to all USB1.1
|
||||
DVB-T devices, not just the dvb-usb-devices)
|
||||
|
||||
The bug, where the TS is distorted by a heavy usage of the device is gone
|
||||
definitely. All dvb-usb-devices I was using (Twinhan, Kworld, DiBcom) are
|
||||
working like charm now with VDR. Sometimes I even was able to record a channel
|
||||
and watch another one.
|
||||
|
||||
Comments
|
||||
~~~~~~~~
|
||||
|
||||
Patches, comments and suggestions are very very welcome.
|
||||
|
||||
3. Acknowledgements
|
||||
-------------------
|
||||
|
||||
Amaury Demol (Amaury.Demol@parrot.com) and Francois Kanounnikoff from DiBcom for
|
||||
providing specs, code and help, on which the dvb-dibusb, dib3000mb and
|
||||
dib3000mc are based.
|
||||
|
||||
David Matthews for identifying a new device type (Artec T1 with AN2235)
|
||||
and for extending dibusb with remote control event handling. Thank you.
|
||||
|
||||
Alex Woods for frequently answering question about usb and dvb
|
||||
stuff, a big thank you.
|
||||
|
||||
Bernd Wagner for helping with huge bug reports and discussions.
|
||||
|
||||
Gunnar Wittich and Joachim von Caron for their trust for providing
|
||||
root-shells on their machines to implement support for new devices.
|
||||
|
||||
Allan Third and Michael Hutchinson for their help to write the Nebula
|
||||
digitv-driver.
|
||||
|
||||
Glen Harris for bringing up, that there is a new dibusb-device and Jiun-Kuei
|
||||
Jung from AVerMedia who kindly provided a special firmware to get the device
|
||||
up and running in Linux.
|
||||
|
||||
Jennifer Chen, Jeff and Jack from Twinhan for kindly supporting by
|
||||
writing the vp7045-driver.
|
||||
|
||||
Steve Chang from WideView for providing information for new devices and
|
||||
firmware files.
|
||||
|
||||
Michael Paxton for submitting remote control keymaps.
|
||||
|
||||
Some guys on the linux-dvb mailing list for encouraging me.
|
||||
|
||||
Peter Schildmann >peter.schildmann-nospam-at-web.de< for his
|
||||
user-level firmware loader, which saves a lot of time
|
||||
(when writing the vp7041 driver)
|
||||
|
||||
Ulf Hermenau for helping me out with traditional chinese.
|
||||
|
||||
André Smoktun and Christian Frömmel for supporting me with
|
||||
hardware and listening to my problems very patiently.
|
||||
|
|
@ -1,3 +1,11 @@
|
|||
FAQ
|
||||
===
|
||||
|
||||
.. note::
|
||||
|
||||
This documentation is outdated. Please check at the DVB wiki
|
||||
at https://linuxtv.org/wiki for more updated info.
|
||||
|
||||
Some very frequently asked questions about linuxtv-dvb
|
||||
|
||||
1. The signal seems to die a few seconds after tuning.
|
||||
|
|
@ -71,8 +79,7 @@ Some very frequently asked questions about linuxtv-dvb
|
|||
http://www.dbox2.info/
|
||||
LinuxDVB on the dBox2
|
||||
|
||||
http://www.tuxbox.org/
|
||||
http://cvs.tuxbox.org/
|
||||
http://www.tuxbox.org/ and http://cvs.tuxbox.org/
|
||||
the TuxBox CVS many interesting DVB applications and the dBox2
|
||||
DVB source
|
||||
|
||||
|
|
@ -85,8 +92,7 @@ Some very frequently asked questions about linuxtv-dvb
|
|||
http://mplayerhq.hu/
|
||||
mplayer
|
||||
|
||||
http://xine.sourceforge.net/
|
||||
http://xinehq.de/
|
||||
http://xine.sourceforge.net/ and http://xinehq.de/
|
||||
xine
|
||||
|
||||
http://www.mythtv.org/
|
||||
|
|
@ -125,6 +131,9 @@ Some very frequently asked questions about linuxtv-dvb
|
|||
Check your routes if they include the multicast address range.
|
||||
Additionally make sure that "source validation by reversed path
|
||||
lookup" is disabled:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
$ "echo 0 > /proc/sys/net/ipv4/conf/dvb0/rp_filter"
|
||||
|
||||
7. What the hell are all those modules that need to be loaded?
|
||||
|
|
@ -156,4 +165,3 @@ Some very frequently asked questions about linuxtv-dvb
|
|||
- dvb-ttpci: The main driver for AV7110 based, full-featured
|
||||
DVB-S/C/T cards
|
||||
|
||||
eof
|
||||
|
|
@ -0,0 +1,42 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. include:: <isonum.txt>
|
||||
|
||||
##############################################
|
||||
Linux Digital TV driver-specific documentation
|
||||
##############################################
|
||||
|
||||
**Copyright** |copy| 2001-2016 : LinuxTV Developers
|
||||
|
||||
This documentation is free software; you can redistribute it and/or modify it
|
||||
under the terms of the GNU General Public License as published by the Free
|
||||
Software Foundation version 2 of the License.
|
||||
|
||||
This program is distributed in the hope that it will be useful, but WITHOUT
|
||||
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details.
|
||||
|
||||
For more details see the file COPYING in the source distribution of Linux.
|
||||
|
||||
.. class:: toc-title
|
||||
|
||||
Table of Contents
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 5
|
||||
:numbered:
|
||||
|
||||
intro
|
||||
avermedia
|
||||
bt8xx
|
||||
cards
|
||||
ci
|
||||
dvb-usb
|
||||
faq
|
||||
lmedm04
|
||||
opera-firmware
|
||||
technisat
|
||||
ttusb-dec
|
||||
udev
|
||||
contributors
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
Introdution
|
||||
===========
|
||||
|
||||
The main development site and GIT repository for these
|
||||
drivers is https://linuxtv.org.
|
||||
|
||||
The DVB mailing list linux-dvb is hosted at vger. Please see
|
||||
http://vger.kernel.org/vger-lists.html#linux-media for details.
|
||||
|
||||
There are also some other old lists hosted at https://linuxtv.org/lists.php. Please check the archive https://linuxtv.org/pipermail/linux-dvb/.
|
||||
|
||||
The media subsystem Wiki is hosted at https://linuxtv.org/wiki/.
|
||||
Please check it before asking newbie questions on the list.
|
||||
|
||||
API documentation is documented at the Kernel. You'll also find useful
|
||||
documentation at: https://linuxtv.org/docs.php.
|
||||
|
||||
You may also find useful material at https://linuxtv.org/downloads/.
|
||||
|
||||
In order to get firmware from proprietary drivers, there's a script at
|
||||
the kernel tree, at scripts/get_dvb_firmware.
|
||||
|
|
@ -1,7 +1,10 @@
|
|||
Firmware files for lmedm04 cards
|
||||
================================
|
||||
|
||||
To extract firmware for the DM04/QQBOX you need to copy the
|
||||
following file(s) to this directory.
|
||||
|
||||
for DM04+/QQBOX LME2510C (Sharp 7395 Tuner)
|
||||
For DM04+/QQBOX LME2510C (Sharp 7395 Tuner)
|
||||
-------------------------------------------
|
||||
|
||||
The Sharp 7395 driver can be found in windows/system32/drivers
|
||||
|
|
@ -9,38 +12,43 @@ The Sharp 7395 driver can be found in windows/system32/drivers
|
|||
US2A0D.sys (dated 17 Mar 2009)
|
||||
|
||||
|
||||
and run
|
||||
./get_dvb_firmware lme2510c_s7395
|
||||
and run:
|
||||
|
||||
will produce
|
||||
dvb-usb-lme2510c-s7395.fw
|
||||
.. code-block:: none
|
||||
|
||||
scripts/get_dvb_firmware lme2510c_s7395
|
||||
|
||||
will produce dvb-usb-lme2510c-s7395.fw
|
||||
|
||||
An alternative but older firmware can be found on the driver
|
||||
disk DVB-S_EN_3.5A in BDADriver/driver
|
||||
|
||||
LMEBDA_DVBS7395C.sys (dated 18 Jan 2008)
|
||||
|
||||
and run
|
||||
./get_dvb_firmware lme2510c_s7395_old
|
||||
and run:
|
||||
|
||||
will produce
|
||||
dvb-usb-lme2510c-s7395.fw
|
||||
.. code-block:: none
|
||||
|
||||
--------------------------------------------------------------------
|
||||
./get_dvb_firmware lme2510c_s7395_old
|
||||
|
||||
will produce dvb-usb-lme2510c-s7395.fw
|
||||
|
||||
The LG firmware can be found on the driver
|
||||
disk DM04+_5.1A[LG] in BDADriver/driver
|
||||
|
||||
for DM04 LME2510 (LG Tuner)
|
||||
For DM04 LME2510 (LG Tuner)
|
||||
---------------------------
|
||||
|
||||
LMEBDA_DVBS.sys (dated 13 Nov 2007)
|
||||
|
||||
and run
|
||||
./get_dvb_firmware lme2510_lg
|
||||
and run:
|
||||
|
||||
will produce
|
||||
dvb-usb-lme2510-lg.fw
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
./get_dvb_firmware lme2510_lg
|
||||
|
||||
will produce dvb-usb-lme2510-lg.fw
|
||||
|
||||
|
||||
Other LG firmware can be extracted manually from US280D.sys
|
||||
|
|
@ -48,34 +56,50 @@ only found in windows/system32/drivers
|
|||
|
||||
dd if=US280D.sys ibs=1 skip=42360 count=3924 of=dvb-usb-lme2510-lg.fw
|
||||
|
||||
for DM04 LME2510C (LG Tuner)
|
||||
---------------------------
|
||||
For DM04 LME2510C (LG Tuner)
|
||||
----------------------------
|
||||
|
||||
dd if=US280D.sys ibs=1 skip=35200 count=3850 of=dvb-usb-lme2510c-lg.fw
|
||||
.. code-block:: none
|
||||
|
||||
dd if=US280D.sys ibs=1 skip=35200 count=3850 of=dvb-usb-lme2510c-lg.fw
|
||||
|
||||
---------------------------------------------------------------------
|
||||
|
||||
The Sharp 0194 tuner driver can be found in windows/system32/drivers
|
||||
|
||||
US290D.sys (dated 09 Apr 2009)
|
||||
|
||||
For LME2510
|
||||
dd if=US290D.sys ibs=1 skip=36856 count=3976 of=dvb-usb-lme2510-s0194.fw
|
||||
-----------
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
dd if=US290D.sys ibs=1 skip=36856 count=3976 of=dvb-usb-lme2510-s0194.fw
|
||||
|
||||
|
||||
For LME2510C
|
||||
dd if=US290D.sys ibs=1 skip=33152 count=3697 of=dvb-usb-lme2510c-s0194.fw
|
||||
------------
|
||||
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
dd if=US290D.sys ibs=1 skip=33152 count=3697 of=dvb-usb-lme2510c-s0194.fw
|
||||
|
||||
---------------------------------------------------------------------
|
||||
|
||||
The m88rs2000 tuner driver can be found in windows/system32/drivers
|
||||
|
||||
US2B0D.sys (dated 29 Jun 2010)
|
||||
|
||||
dd if=US2B0D.sys ibs=1 skip=34432 count=3871 of=dvb-usb-lme2510c-rs2000.fw
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
dd if=US2B0D.sys ibs=1 skip=34432 count=3871 of=dvb-usb-lme2510c-rs2000.fw
|
||||
|
||||
We need to modify id of rs2000 firmware or it will warm boot id 3344:1120.
|
||||
|
||||
echo -ne \\xF0\\x22 | dd conv=notrunc bs=1 count=2 seek=266 of=dvb-usb-lme2510c-rs2000.fw
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
|
||||
echo -ne \\xF0\\x22 | dd conv=notrunc bs=1 count=2 seek=266 of=dvb-usb-lme2510c-rs2000.fw
|
||||
|
||||
Copy the firmware file(s) to /lib/firmware
|
||||
|
|
@ -1,3 +1,8 @@
|
|||
Opera firmware
|
||||
==============
|
||||
|
||||
Author: Marco Gittler <g.marco@freenet.de>
|
||||
|
||||
To extract the firmware for the Opera DVB-S1 USB-Box
|
||||
you need to copy the files:
|
||||
|
||||
|
|
@ -6,9 +11,11 @@ you need to copy the files:
|
|||
|
||||
from the windriver disk into this directory.
|
||||
|
||||
Then run
|
||||
Then run:
|
||||
|
||||
./get_dvb_firmware opera1
|
||||
.. code-block:: none
|
||||
|
||||
scripts/get_dvb_firmware opera1
|
||||
|
||||
and after that you have 2 files:
|
||||
|
||||
|
|
@ -22,6 +29,3 @@ Copy them into /lib/firmware/ .
|
|||
After that the driver can load the firmware
|
||||
(if you have enabled firmware loading
|
||||
in kernel config and have hotplug running).
|
||||
|
||||
|
||||
Marco Gittler <g.marco@freenet.de>
|
||||
|
|
@ -0,0 +1,98 @@
|
|||
How to set up the Technisat/B2C2 Flexcop devices
|
||||
================================================
|
||||
|
||||
.. note::
|
||||
|
||||
This documentation is outdated.
|
||||
|
||||
Author: Uwe Bugla <uwe.bugla@gmx.de> August 2009
|
||||
|
||||
Find out what device you have
|
||||
-----------------------------
|
||||
|
||||
Important Notice: The driver does NOT support Technisat USB 2 devices!
|
||||
|
||||
First start your linux box with a shipped kernel:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
lspci -vvv for a PCI device (lsusb -vvv for an USB device) will show you for example:
|
||||
02:0b.0 Network controller: Techsan Electronics Co Ltd B2C2 FlexCopII DVB chip /
|
||||
Technisat SkyStar2 DVB card (rev 02)
|
||||
|
||||
dmesg | grep frontend may show you for example:
|
||||
DVB: registering frontend 0 (Conexant CX24123/CX24109)...
|
||||
|
||||
Kernel compilation:
|
||||
-------------------
|
||||
|
||||
If the Flexcop / Technisat is the only DVB / TV / Radio device in your box
|
||||
get rid of unnecessary modules and check this one:
|
||||
|
||||
``Multimedia support`` => ``Customise analog and hybrid tuner modules to build``
|
||||
|
||||
In this directory uncheck every driver which is activated there
|
||||
(except ``Simple tuner support`` for ATSC 3rd generation only -> see case 9 please).
|
||||
|
||||
Then please activate:
|
||||
|
||||
- Main module part:
|
||||
|
||||
``Multimedia support`` => ``DVB/ATSC adapters`` => ``Technisat/B2C2 FlexcopII(b) and FlexCopIII adapters``
|
||||
|
||||
#) => ``Technisat/B2C2 Air/Sky/Cable2PC PCI`` (PCI card) or
|
||||
#) => ``Technisat/B2C2 Air/Sky/Cable2PC USB`` (USB 1.1 adapter)
|
||||
and for troubleshooting purposes:
|
||||
#) => ``Enable debug for the B2C2 FlexCop drivers``
|
||||
|
||||
- Frontend / Tuner / Demodulator module part:
|
||||
|
||||
``Multimedia support`` => ``DVB/ATSC adapters``
|
||||
=> ``Customise the frontend modules to build`` ``Customise DVB frontends`` =>
|
||||
|
||||
- SkyStar DVB-S Revision 2.3:
|
||||
|
||||
#) => ``Zarlink VP310/MT312/ZL10313 based``
|
||||
#) => ``Generic I2C PLL based tuners``
|
||||
|
||||
- SkyStar DVB-S Revision 2.6:
|
||||
|
||||
#) => ``ST STV0299 based``
|
||||
#) => ``Generic I2C PLL based tuners``
|
||||
|
||||
- SkyStar DVB-S Revision 2.7:
|
||||
|
||||
#) => ``Samsung S5H1420 based``
|
||||
#) => ``Integrant ITD1000 Zero IF tuner for DVB-S/DSS``
|
||||
#) => ``ISL6421 SEC controller``
|
||||
|
||||
- SkyStar DVB-S Revision 2.8:
|
||||
|
||||
#) => ``Conexant CX24123 based``
|
||||
#) => ``Conexant CX24113/CX24128 tuner for DVB-S/DSS``
|
||||
#) => ``ISL6421 SEC controller``
|
||||
|
||||
- AirStar DVB-T card:
|
||||
|
||||
#) => ``Zarlink MT352 based``
|
||||
#) => ``Generic I2C PLL based tuners``
|
||||
|
||||
- CableStar DVB-C card:
|
||||
|
||||
#) => ``ST STV0297 based``
|
||||
#) => ``Generic I2C PLL based tuners``
|
||||
|
||||
- AirStar ATSC card 1st generation:
|
||||
|
||||
#) => ``Broadcom BCM3510``
|
||||
|
||||
- AirStar ATSC card 2nd generation:
|
||||
|
||||
#) => ``NxtWave Communications NXT2002/NXT2004 based``
|
||||
#) => ``Generic I2C PLL based tuners``
|
||||
|
||||
- AirStar ATSC card 3rd generation:
|
||||
|
||||
#) => ``LG Electronics LGDT3302/LGDT3303 based``
|
||||
#) ``Multimedia support`` => ``Customise analog and hybrid tuner modules to build`` => ``Simple tuner support``
|
||||
|
||||
|
|
@ -0,0 +1,43 @@
|
|||
TechnoTrend/Hauppauge DEC USB Driver
|
||||
====================================
|
||||
|
||||
Driver Status
|
||||
-------------
|
||||
|
||||
Supported:
|
||||
|
||||
- DEC2000-t
|
||||
- DEC2450-t
|
||||
- DEC3000-s
|
||||
- Video Streaming
|
||||
- Audio Streaming
|
||||
- Section Filters
|
||||
- Channel Zapping
|
||||
- Hotplug firmware loader
|
||||
|
||||
To Do:
|
||||
|
||||
- Tuner status information
|
||||
- DVB network interface
|
||||
- Streaming video PC->DEC
|
||||
- Conax support for 2450-t
|
||||
|
||||
Getting the Firmware
|
||||
--------------------
|
||||
To download the firmware, use the following commands:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
scripts/get_dvb_firmware dec2000t
|
||||
scripts/get_dvb_firmware dec2540t
|
||||
scripts/get_dvb_firmware dec3000s
|
||||
|
||||
|
||||
Hotplug Firmware Loading
|
||||
------------------------
|
||||
|
||||
Since 2.6 kernels, the firmware is loaded at the point that the driver module
|
||||
is loaded.
|
||||
|
||||
Copy the three files downloaded above into the /usr/lib/hotplug/firmware or
|
||||
/lib/firmware directory (depending on configuration of firmware hotplug).
|
||||
|
|
@ -1,9 +1,22 @@
|
|||
UDEV rules for DVB
|
||||
==================
|
||||
|
||||
.. note::
|
||||
|
||||
#) This documentation is outdated. Udev on modern distributions auto-detect
|
||||
the DVB devices.
|
||||
|
||||
#) **TODO:** change this document to explain how to make DVB devices
|
||||
persistent, as, when a machine has multiple devices, they may be detected
|
||||
on different orders, which could cause apps that relies on the device
|
||||
numbers to fail.
|
||||
|
||||
The DVB subsystem currently registers to the sysfs subsystem using the
|
||||
"class_simple" interface.
|
||||
|
||||
This means that only the basic information like module loading parameters
|
||||
are presented through sysfs. Other things that might be interesting are
|
||||
currently *not* available.
|
||||
currently **not** available.
|
||||
|
||||
Nevertheless it's now possible to add proper udev rules so that the
|
||||
DVB device nodes are created automatically.
|
||||
|
|
@ -21,10 +34,11 @@ The script should be called "dvb.sh" and should be placed into a script
|
|||
dir where udev can execute it, most likely /etc/udev/scripts/
|
||||
|
||||
So, create a new file /etc/udev/scripts/dvb.sh and add the following:
|
||||
------------------------------schnipp------------------------------------------------
|
||||
#!/bin/sh
|
||||
/bin/echo $1 | /bin/sed -e 's,dvb\([0-9]\)\.\([^0-9]*\)\([0-9]\),dvb/adapter\1/\2\3,'
|
||||
------------------------------schnipp------------------------------------------------
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
#!/bin/sh
|
||||
/bin/echo $1 | /bin/sed -e 's,dvb\([0-9]\)\.\([^0-9]*\)\([0-9]\),dvb/adapter\1/\2\3,'
|
||||
|
||||
Don't forget to make the script executable with "chmod".
|
||||
|
||||
|
|
@ -34,9 +48,10 @@ directory for rule files. The main udev configuration file /etc/udev/udev.conf
|
|||
will tell you the directory where the rules are, most likely it's /etc/udev/rules.d/
|
||||
|
||||
Create a new rule file in that directory called "dvb.rule" and add the following line:
|
||||
------------------------------schnipp------------------------------------------------
|
||||
KERNEL="dvb*", PROGRAM="/etc/udev/scripts/dvb.sh %k", NAME="%c"
|
||||
------------------------------schnipp------------------------------------------------
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
KERNEL="dvb*", PROGRAM="/etc/udev/scripts/dvb.sh %k", NAME="%c"
|
||||
|
||||
If you want more control over the device nodes (for example a special group membership)
|
||||
have a look at "man udev".
|
||||
|
|
@ -0,0 +1,47 @@
|
|||
# Ignore header name
|
||||
ignore define _DVBFRONTEND_H_
|
||||
|
||||
# Group layer A-C symbols together
|
||||
replace define DTV_ISDBT_LAYERA_FEC dtv-isdbt-layer-fec
|
||||
replace define DTV_ISDBT_LAYERB_FEC dtv-isdbt-layer-fec
|
||||
replace define DTV_ISDBT_LAYERC_FEC dtv-isdbt-layer-fec
|
||||
replace define DTV_ISDBT_LAYERA_MODULATION dtv-isdbt-layer-modulation
|
||||
replace define DTV_ISDBT_LAYERB_MODULATION dtv-isdbt-layer-modulation
|
||||
replace define DTV_ISDBT_LAYERC_MODULATION dtv-isdbt-layer-modulation
|
||||
replace define DTV_ISDBT_LAYERA_SEGMENT_COUNT dtv-isdbt-layer-segment-count
|
||||
replace define DTV_ISDBT_LAYERB_SEGMENT_COUNT dtv-isdbt-layer-segment-count
|
||||
replace define DTV_ISDBT_LAYERC_SEGMENT_COUNT dtv-isdbt-layer-segment-count
|
||||
replace define DTV_ISDBT_LAYERA_TIME_INTERLEAVING dtv-isdbt-layer-time-interleaving
|
||||
replace define DTV_ISDBT_LAYERB_TIME_INTERLEAVING dtv-isdbt-layer-time-interleaving
|
||||
replace define DTV_ISDBT_LAYERC_TIME_INTERLEAVING dtv-isdbt-layer-time-interleaving
|
||||
|
||||
# Ignore legacy defines
|
||||
ignore define DTV_ISDBS_TS_ID_LEGACY
|
||||
ignore define SYS_DVBC_ANNEX_AC
|
||||
ignore define SYS_DMBTH
|
||||
|
||||
# Ignore limits
|
||||
ignore define DTV_MAX_COMMAND
|
||||
ignore define MAX_DTV_STATS
|
||||
ignore define DTV_IOCTL_MAX_MSGS
|
||||
|
||||
# Stats enum is documented altogether
|
||||
replace enum fecap_scale_params frontend-stat-properties
|
||||
replace symbol FE_SCALE_COUNTER frontend-stat-properties
|
||||
replace symbol FE_SCALE_DECIBEL frontend-stat-properties
|
||||
replace symbol FE_SCALE_NOT_AVAILABLE frontend-stat-properties
|
||||
replace symbol FE_SCALE_RELATIVE frontend-stat-properties
|
||||
|
||||
# the same reference is used for both get and set ioctls
|
||||
replace ioctl FE_SET_PROPERTY FE_GET_PROPERTY
|
||||
|
||||
# Ignore struct used only internally at Kernel
|
||||
ignore struct dtv_cmds_h
|
||||
|
||||
# Typedefs that use the enum reference
|
||||
replace typedef fe_sec_voltage_t fe-sec-voltage
|
||||
|
||||
# Replaces for flag constants
|
||||
replace define FE_TUNE_MODE_ONESHOT fe_set_frontend_tune_mode
|
||||
replace define LNA_AUTO dtv-lna
|
||||
replace define NO_STREAM_ID_FILTER dtv-stream-id
|
||||
|
|
@ -0,0 +1,46 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
============
|
||||
Introduction
|
||||
============
|
||||
|
||||
This document covers the Linux Kernel to Userspace API's used by video
|
||||
and radio streaming devices, including video cameras, analog and digital
|
||||
TV receiver cards, AM/FM receiver cards, Software Defined Radio (SDR),
|
||||
streaming capture and output devices, codec devices and remote controllers.
|
||||
|
||||
A typical media device hardware is shown at :ref:`typical_media_device`.
|
||||
|
||||
.. _typical_media_device:
|
||||
|
||||
.. figure:: media_api_files/typical_media_device.*
|
||||
:alt: typical_media_device.svg
|
||||
:align: center
|
||||
|
||||
Typical Media Device
|
||||
|
||||
The media infrastructure API was designed to control such devices. It is
|
||||
divided into five parts.
|
||||
|
||||
1. The :ref:`first part <v4l2spec>` covers radio, video capture and output,
|
||||
cameras, analog TV devices and codecs.
|
||||
|
||||
2. The :ref:`second part <dvbapi>` covers the API used for digital TV and
|
||||
Internet reception via one of the several digital tv standards. While it is
|
||||
called as DVB API, in fact it covers several different video standards
|
||||
including DVB-T/T2, DVB-S/S2, DVB-C, ATSC, ISDB-T, ISDB-S, DTMB, etc. The
|
||||
complete list of supported standards can be found at
|
||||
:ref:`fe-delivery-system-t`.
|
||||
|
||||
3. The :ref:`third part <remote_controllers>` covers the Remote Controller API.
|
||||
|
||||
4. The :ref:`fourth part <media_controller>` covers the Media Controller API.
|
||||
|
||||
5. The :ref:`fifth part <cec>` covers the CEC (Consumer Electronics Control) API.
|
||||
|
||||
It should also be noted that a media device may also have audio components, like
|
||||
mixers, PCM capture, PCM playback, etc, which are controlled via ALSA API. For
|
||||
additional information and for the latest development code, see:
|
||||
`https://linuxtv.org <https://linuxtv.org>`__. For discussing improvements,
|
||||
reporting troubles, sending new drivers, etc, please mail to: `Linux Media
|
||||
Mailing List (LMML) <http://vger.kernel.org/vger-lists.html#linux-media>`__.
|
||||
|
|
@ -0,0 +1,132 @@
|
|||
Digital TV (DVB) devices
|
||||
------------------------
|
||||
|
||||
Digital TV Common functions
|
||||
---------------------------
|
||||
|
||||
.. kernel-doc:: drivers/media/dvb-core/dvb_math.h
|
||||
|
||||
.. kernel-doc:: drivers/media/dvb-core/dvb_ringbuffer.h
|
||||
|
||||
.. kernel-doc:: drivers/media/dvb-core/dvbdev.h
|
||||
|
||||
|
||||
|
||||
.. kernel-doc:: drivers/media/dvb-core/dvb_math.h
|
||||
:export: drivers/media/dvb-core/dvb_math.c
|
||||
|
||||
.. kernel-doc:: drivers/media/dvb-core/dvbdev.h
|
||||
:export: drivers/media/dvb-core/dvbdev.c
|
||||
|
||||
|
||||
|
||||
Digital TV Frontend kABI
|
||||
------------------------
|
||||
|
||||
Digital TV Frontend
|
||||
~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
The Digital TV Frontend kABI defines a driver-internal interface for
|
||||
registering low-level, hardware specific driver to a hardware independent
|
||||
frontend layer. It is only of interest for Digital TV device driver writers.
|
||||
The header file for this API is named dvb_frontend.h and located in
|
||||
drivers/media/dvb-core.
|
||||
|
||||
Before using the Digital TV frontend core, the bridge driver should attach
|
||||
the frontend demod, tuner and SEC devices and call
|
||||
:c:func:`dvb_register_frontend()`,
|
||||
in order to register the new frontend at the subsystem. At device
|
||||
detach/removal, the bridge driver should call
|
||||
:c:func:`dvb_unregister_frontend()` to
|
||||
remove the frontend from the core and then :c:func:`dvb_frontend_detach()`
|
||||
to free the memory allocated by the frontend drivers.
|
||||
|
||||
The drivers should also call :c:func:`dvb_frontend_suspend()` as part of
|
||||
their handler for the :c:type:`device_driver`.\ ``suspend()``, and
|
||||
:c:func:`dvb_frontend_resume()` as
|
||||
part of their handler for :c:type:`device_driver`.\ ``resume()``.
|
||||
|
||||
A few other optional functions are provided to handle some special cases.
|
||||
|
||||
.. kernel-doc:: drivers/media/dvb-core/dvb_frontend.h
|
||||
|
||||
|
||||
Digital TV Demux kABI
|
||||
---------------------
|
||||
|
||||
Digital TV Demux
|
||||
~~~~~~~~~~~~~~~~
|
||||
|
||||
The Kernel Digital TV Demux kABI defines a driver-internal interface for
|
||||
registering low-level, hardware specific driver to a hardware independent
|
||||
demux layer. It is only of interest for Digital TV device driver writers.
|
||||
The header file for this kABI is named demux.h and located in
|
||||
drivers/media/dvb-core.
|
||||
|
||||
The demux kABI should be implemented for each demux in the system. It is
|
||||
used to select the TS source of a demux and to manage the demux resources.
|
||||
When the demux client allocates a resource via the demux kABI, it receives
|
||||
a pointer to the kABI of that resource.
|
||||
|
||||
Each demux receives its TS input from a DVB front-end or from memory, as
|
||||
set via this demux kABI. In a system with more than one front-end, the kABI
|
||||
can be used to select one of the DVB front-ends as a TS source for a demux,
|
||||
unless this is fixed in the HW platform.
|
||||
|
||||
The demux kABI only controls front-ends regarding to their connections with
|
||||
demuxes; the kABI used to set the other front-end parameters, such as
|
||||
tuning, are devined via the Digital TV Frontend kABI.
|
||||
|
||||
The functions that implement the abstract interface demux should be defined
|
||||
static or module private and registered to the Demux core for external
|
||||
access. It is not necessary to implement every function in the struct
|
||||
&dmx_demux. For example, a demux interface might support Section filtering,
|
||||
but not PES filtering. The kABI client is expected to check the value of any
|
||||
function pointer before calling the function: the value of ``NULL`` means
|
||||
that the function is not available.
|
||||
|
||||
Whenever the functions of the demux API modify shared data, the
|
||||
possibilities of lost update and race condition problems should be
|
||||
addressed, e.g. by protecting parts of code with mutexes.
|
||||
|
||||
Note that functions called from a bottom half context must not sleep.
|
||||
Even a simple memory allocation without using ``GFP_ATOMIC`` can result in a
|
||||
kernel thread being put to sleep if swapping is needed. For example, the
|
||||
Linux Kernel calls the functions of a network device interface from a
|
||||
bottom half context. Thus, if a demux kABI function is called from network
|
||||
device code, the function must not sleep.
|
||||
|
||||
|
||||
|
||||
Demux Callback API
|
||||
------------------
|
||||
|
||||
Demux Callback
|
||||
~~~~~~~~~~~~~~
|
||||
|
||||
This kernel-space API comprises the callback functions that deliver filtered
|
||||
data to the demux client. Unlike the other DVB kABIs, these functions are
|
||||
provided by the client and called from the demux code.
|
||||
|
||||
The function pointers of this abstract interface are not packed into a
|
||||
structure as in the other demux APIs, because the callback functions are
|
||||
registered and used independent of each other. As an example, it is possible
|
||||
for the API client to provide several callback functions for receiving TS
|
||||
packets and no callbacks for PES packets or sections.
|
||||
|
||||
The functions that implement the callback API need not be re-entrant: when
|
||||
a demux driver calls one of these functions, the driver is not allowed to
|
||||
call the function again before the original call returns. If a callback is
|
||||
triggered by a hardware interrupt, it is recommended to use the Linux
|
||||
bottom half mechanism or start a tasklet instead of making the callback
|
||||
function call directly from a hardware interrupt.
|
||||
|
||||
This mechanism is implemented by :c:func:`dmx_ts_cb()` and :cpp:func:`dmx_section_cb()`
|
||||
callbacks.
|
||||
|
||||
.. kernel-doc:: drivers/media/dvb-core/demux.h
|
||||
|
||||
Digital TV Conditional Access kABI
|
||||
----------------------------------
|
||||
|
||||
.. kernel-doc:: drivers/media/dvb-core/dvb_ca_en50221.h
|
||||
|
|
@ -0,0 +1,263 @@
|
|||
Media Controller devices
|
||||
------------------------
|
||||
|
||||
Media Controller
|
||||
~~~~~~~~~~~~~~~~
|
||||
|
||||
The media controller userspace API is documented in
|
||||
:ref:`the Media Controller uAPI book <media_controller>`. This document focus
|
||||
on the kernel-side implementation of the media framework.
|
||||
|
||||
Abstract media device model
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
Discovering a device internal topology, and configuring it at runtime, is one
|
||||
of the goals of the media framework. To achieve this, hardware devices are
|
||||
modelled as an oriented graph of building blocks called entities connected
|
||||
through pads.
|
||||
|
||||
An entity is a basic media hardware building block. It can correspond to
|
||||
a large variety of logical blocks such as physical hardware devices
|
||||
(CMOS sensor for instance), logical hardware devices (a building block
|
||||
in a System-on-Chip image processing pipeline), DMA channels or physical
|
||||
connectors.
|
||||
|
||||
A pad is a connection endpoint through which an entity can interact with
|
||||
other entities. Data (not restricted to video) produced by an entity
|
||||
flows from the entity's output to one or more entity inputs. Pads should
|
||||
not be confused with physical pins at chip boundaries.
|
||||
|
||||
A link is a point-to-point oriented connection between two pads, either
|
||||
on the same entity or on different entities. Data flows from a source
|
||||
pad to a sink pad.
|
||||
|
||||
Media device
|
||||
^^^^^^^^^^^^
|
||||
|
||||
A media device is represented by a :c:type:`struct media_device <media_device>`
|
||||
instance, defined in ``include/media/media-device.h``.
|
||||
Allocation of the structure is handled by the media device driver, usually by
|
||||
embedding the :c:type:`media_device` instance in a larger driver-specific
|
||||
structure.
|
||||
|
||||
Drivers register media device instances by calling
|
||||
:c:func:`__media_device_register()` via the macro ``media_device_register()``
|
||||
and unregistered by calling :c:func:`media_device_unregister()`.
|
||||
|
||||
Entities
|
||||
^^^^^^^^
|
||||
|
||||
Entities are represented by a :c:type:`struct media_entity <media_entity>`
|
||||
instance, defined in ``include/media/media-entity.h``. The structure is usually
|
||||
embedded into a higher-level structure, such as
|
||||
:c:type:`v4l2_subdev` or :c:type:`video_device`
|
||||
instances, although drivers can allocate entities directly.
|
||||
|
||||
Drivers initialize entity pads by calling
|
||||
:c:func:`media_entity_pads_init()`.
|
||||
|
||||
Drivers register entities with a media device by calling
|
||||
:c:func:`media_device_register_entity()`
|
||||
and unregistred by calling
|
||||
:c:func:`media_device_unregister_entity()`.
|
||||
|
||||
Interfaces
|
||||
^^^^^^^^^^
|
||||
|
||||
Interfaces are represented by a
|
||||
:c:type:`struct media_interface <media_interface>` instance, defined in
|
||||
``include/media/media-entity.h``. Currently, only one type of interface is
|
||||
defined: a device node. Such interfaces are represented by a
|
||||
:c:type:`struct media_intf_devnode <media_intf_devnode>`.
|
||||
|
||||
Drivers initialize and create device node interfaces by calling
|
||||
:c:func:`media_devnode_create()`
|
||||
and remove them by calling:
|
||||
:c:func:`media_devnode_remove()`.
|
||||
|
||||
Pads
|
||||
^^^^
|
||||
Pads are represented by a :c:type:`struct media_pad <media_pad>` instance,
|
||||
defined in ``include/media/media-entity.h``. Each entity stores its pads in
|
||||
a pads array managed by the entity driver. Drivers usually embed the array in
|
||||
a driver-specific structure.
|
||||
|
||||
Pads are identified by their entity and their 0-based index in the pads
|
||||
array.
|
||||
|
||||
Both information are stored in the :c:type:`struct media_pad`, making the
|
||||
:c:type:`media_pad` pointer the canonical way to store and pass link references.
|
||||
|
||||
Pads have flags that describe the pad capabilities and state.
|
||||
|
||||
``MEDIA_PAD_FL_SINK`` indicates that the pad supports sinking data.
|
||||
``MEDIA_PAD_FL_SOURCE`` indicates that the pad supports sourcing data.
|
||||
|
||||
.. note::
|
||||
|
||||
One and only one of ``MEDIA_PAD_FL_SINK`` or ``MEDIA_PAD_FL_SOURCE`` must
|
||||
be set for each pad.
|
||||
|
||||
Links
|
||||
^^^^^
|
||||
|
||||
Links are represented by a :c:type:`struct media_link <media_link>` instance,
|
||||
defined in ``include/media/media-entity.h``. There are two types of links:
|
||||
|
||||
**1. pad to pad links**:
|
||||
|
||||
Associate two entities via their PADs. Each entity has a list that points
|
||||
to all links originating at or targeting any of its pads.
|
||||
A given link is thus stored twice, once in the source entity and once in
|
||||
the target entity.
|
||||
|
||||
Drivers create pad to pad links by calling:
|
||||
:c:func:`media_create_pad_link()` and remove with
|
||||
:c:func:`media_entity_remove_links()`.
|
||||
|
||||
**2. interface to entity links**:
|
||||
|
||||
Associate one interface to a Link.
|
||||
|
||||
Drivers create interface to entity links by calling:
|
||||
:c:func:`media_create_intf_link()` and remove with
|
||||
:c:func:`media_remove_intf_links()`.
|
||||
|
||||
.. note::
|
||||
|
||||
Links can only be created after having both ends already created.
|
||||
|
||||
Links have flags that describe the link capabilities and state. The
|
||||
valid values are described at :c:func:`media_create_pad_link()` and
|
||||
:c:func:`media_create_intf_link()`.
|
||||
|
||||
Graph traversal
|
||||
^^^^^^^^^^^^^^^
|
||||
|
||||
The media framework provides APIs to iterate over entities in a graph.
|
||||
|
||||
To iterate over all entities belonging to a media device, drivers can use
|
||||
the media_device_for_each_entity macro, defined in
|
||||
``include/media/media-device.h``.
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct media_entity *entity;
|
||||
|
||||
media_device_for_each_entity(entity, mdev) {
|
||||
// entity will point to each entity in turn
|
||||
...
|
||||
}
|
||||
|
||||
Drivers might also need to iterate over all entities in a graph that can be
|
||||
reached only through enabled links starting at a given entity. The media
|
||||
framework provides a depth-first graph traversal API for that purpose.
|
||||
|
||||
.. note::
|
||||
|
||||
Graphs with cycles (whether directed or undirected) are **NOT**
|
||||
supported by the graph traversal API. To prevent infinite loops, the graph
|
||||
traversal code limits the maximum depth to ``MEDIA_ENTITY_ENUM_MAX_DEPTH``,
|
||||
currently defined as 16.
|
||||
|
||||
Drivers initiate a graph traversal by calling
|
||||
:c:func:`media_entity_graph_walk_start()`
|
||||
|
||||
The graph structure, provided by the caller, is initialized to start graph
|
||||
traversal at the given entity.
|
||||
|
||||
Drivers can then retrieve the next entity by calling
|
||||
:c:func:`media_entity_graph_walk_next()`
|
||||
|
||||
When the graph traversal is complete the function will return ``NULL``.
|
||||
|
||||
Graph traversal can be interrupted at any moment. No cleanup function call
|
||||
is required and the graph structure can be freed normally.
|
||||
|
||||
Helper functions can be used to find a link between two given pads, or a pad
|
||||
connected to another pad through an enabled link
|
||||
:c:func:`media_entity_find_link()` and
|
||||
:c:func:`media_entity_remote_pad()`.
|
||||
|
||||
Use count and power handling
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
Due to the wide differences between drivers regarding power management
|
||||
needs, the media controller does not implement power management. However,
|
||||
the :c:type:`struct media_entity <media_entity>` includes a ``use_count``
|
||||
field that media drivers
|
||||
can use to track the number of users of every entity for power management
|
||||
needs.
|
||||
|
||||
The :c:type:`media_entity<media_entity>`.\ ``use_count`` field is owned by
|
||||
media drivers and must not be
|
||||
touched by entity drivers. Access to the field must be protected by the
|
||||
:c:type:`media_device`.\ ``graph_mutex`` lock.
|
||||
|
||||
Links setup
|
||||
^^^^^^^^^^^
|
||||
|
||||
Link properties can be modified at runtime by calling
|
||||
:c:func:`media_entity_setup_link()`.
|
||||
|
||||
Pipelines and media streams
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
When starting streaming, drivers must notify all entities in the pipeline to
|
||||
prevent link states from being modified during streaming by calling
|
||||
:c:func:`media_entity_pipeline_start()`.
|
||||
|
||||
The function will mark all entities connected to the given entity through
|
||||
enabled links, either directly or indirectly, as streaming.
|
||||
|
||||
The :c:type:`struct media_pipeline <media_pipeline>` instance pointed to by
|
||||
the pipe argument will be stored in every entity in the pipeline.
|
||||
Drivers should embed the :c:type:`struct media_pipeline <media_pipeline>`
|
||||
in higher-level pipeline structures and can then access the
|
||||
pipeline through the :c:type:`struct media_entity <media_entity>`
|
||||
pipe field.
|
||||
|
||||
Calls to :c:func:`media_entity_pipeline_start()` can be nested.
|
||||
The pipeline pointer must be identical for all nested calls to the function.
|
||||
|
||||
:c:func:`media_entity_pipeline_start()` may return an error. In that case,
|
||||
it will clean up any of the changes it did by itself.
|
||||
|
||||
When stopping the stream, drivers must notify the entities with
|
||||
:c:func:`media_entity_pipeline_stop()`.
|
||||
|
||||
If multiple calls to :c:func:`media_entity_pipeline_start()` have been
|
||||
made the same number of :c:func:`media_entity_pipeline_stop()` calls
|
||||
are required to stop streaming.
|
||||
The :c:type:`media_entity`.\ ``pipe`` field is reset to ``NULL`` on the last
|
||||
nested stop call.
|
||||
|
||||
Link configuration will fail with ``-EBUSY`` by default if either end of the
|
||||
link is a streaming entity. Links that can be modified while streaming must
|
||||
be marked with the ``MEDIA_LNK_FL_DYNAMIC`` flag.
|
||||
|
||||
If other operations need to be disallowed on streaming entities (such as
|
||||
changing entities configuration parameters) drivers can explicitly check the
|
||||
media_entity stream_count field to find out if an entity is streaming. This
|
||||
operation must be done with the media_device graph_mutex held.
|
||||
|
||||
Link validation
|
||||
^^^^^^^^^^^^^^^
|
||||
|
||||
Link validation is performed by :c:func:`media_entity_pipeline_start()`
|
||||
for any entity which has sink pads in the pipeline. The
|
||||
:c:type:`media_entity`.\ ``link_validate()`` callback is used for that
|
||||
purpose. In ``link_validate()`` callback, entity driver should check
|
||||
that the properties of the source pad of the connected entity and its own
|
||||
sink pad match. It is up to the type of the entity (and in the end, the
|
||||
properties of the hardware) what matching actually means.
|
||||
|
||||
Subsystems should facilitate link validation by providing subsystem specific
|
||||
helper functions to provide easy access for commonly needed information, and
|
||||
in the end provide a way to use driver-specific callbacks.
|
||||
|
||||
.. kernel-doc:: include/media/media-device.h
|
||||
|
||||
.. kernel-doc:: include/media/media-devnode.h
|
||||
|
||||
.. kernel-doc:: include/media/media-entity.h
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
Remote Controller devices
|
||||
-------------------------
|
||||
|
||||
Remote Controller core
|
||||
~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
.. kernel-doc:: include/media/rc-core.h
|
||||
|
||||
.. kernel-doc:: include/media/rc-map.h
|
||||
|
||||
LIRC
|
||||
~~~~
|
||||
|
||||
.. kernel-doc:: include/media/lirc_dev.h
|
||||
|
|
@ -0,0 +1,29 @@
|
|||
V4L2 clocks
|
||||
-----------
|
||||
|
||||
.. attention::
|
||||
|
||||
This is a temporary API and it shall be replaced by the generic
|
||||
clock API, when the latter becomes widely available.
|
||||
|
||||
Many subdevices, like camera sensors, TV decoders and encoders, need a clock
|
||||
signal to be supplied by the system. Often this clock is supplied by the
|
||||
respective bridge device. The Linux kernel provides a Common Clock Framework for
|
||||
this purpose. However, it is not (yet) available on all architectures. Besides,
|
||||
the nature of the multi-functional (clock, data + synchronisation, I2C control)
|
||||
connection of subdevices to the system might impose special requirements on the
|
||||
clock API usage. E.g. V4L2 has to support clock provider driver unregistration
|
||||
while a subdevice driver is holding a reference to the clock. For these reasons
|
||||
a V4L2 clock helper API has been developed and is provided to bridge and
|
||||
subdevice drivers.
|
||||
|
||||
The API consists of two parts: two functions to register and unregister a V4L2
|
||||
clock source: v4l2_clk_register() and v4l2_clk_unregister() and calls to control
|
||||
a clock object, similar to the respective generic clock API calls:
|
||||
v4l2_clk_get(), v4l2_clk_put(), v4l2_clk_enable(), v4l2_clk_disable(),
|
||||
v4l2_clk_get_rate(), and v4l2_clk_set_rate(). Clock suppliers have to provide
|
||||
clock operations that will be called when clock users invoke respective API
|
||||
methods.
|
||||
|
||||
It is expected that once the CCF becomes available on all relevant
|
||||
architectures this API will be removed.
|
||||
|
|
@ -0,0 +1,6 @@
|
|||
V4L2 common functions and data structures
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-common.h
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-ioctl.h
|
||||
|
|
@ -1,5 +1,8 @@
|
|||
V4L2 Controls
|
||||
=============
|
||||
|
||||
Introduction
|
||||
============
|
||||
------------
|
||||
|
||||
The V4L2 control API seems simple enough, but quickly becomes very hard to
|
||||
implement correctly in drivers. But much of the code needed to handle controls
|
||||
|
|
@ -26,7 +29,7 @@ for V4L2 drivers and struct v4l2_subdev for sub-device drivers.
|
|||
|
||||
|
||||
Objects in the framework
|
||||
========================
|
||||
------------------------
|
||||
|
||||
There are two main objects:
|
||||
|
||||
|
|
@ -39,12 +42,14 @@ controls, possibly to controls owned by other handlers.
|
|||
|
||||
|
||||
Basic usage for V4L2 and sub-device drivers
|
||||
===========================================
|
||||
-------------------------------------------
|
||||
|
||||
1) Prepare the driver:
|
||||
|
||||
1.1) Add the handler to your driver's top-level struct:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct foo_dev {
|
||||
...
|
||||
struct v4l2_ctrl_handler ctrl_handler;
|
||||
|
|
@ -55,16 +60,20 @@ Basic usage for V4L2 and sub-device drivers
|
|||
|
||||
1.2) Initialize the handler:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
v4l2_ctrl_handler_init(&foo->ctrl_handler, nr_of_controls);
|
||||
|
||||
The second argument is a hint telling the function how many controls this
|
||||
handler is expected to handle. It will allocate a hashtable based on this
|
||||
information. It is a hint only.
|
||||
The second argument is a hint telling the function how many controls this
|
||||
handler is expected to handle. It will allocate a hashtable based on this
|
||||
information. It is a hint only.
|
||||
|
||||
1.3) Hook the control handler into the driver:
|
||||
|
||||
1.3.1) For V4L2 drivers do this:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct foo_dev {
|
||||
...
|
||||
struct v4l2_device v4l2_dev;
|
||||
|
|
@ -75,15 +84,17 @@ Basic usage for V4L2 and sub-device drivers
|
|||
|
||||
foo->v4l2_dev.ctrl_handler = &foo->ctrl_handler;
|
||||
|
||||
Where foo->v4l2_dev is of type struct v4l2_device.
|
||||
Where foo->v4l2_dev is of type struct v4l2_device.
|
||||
|
||||
Finally, remove all control functions from your v4l2_ioctl_ops (if any):
|
||||
vidioc_queryctrl, vidioc_query_ext_ctrl, vidioc_querymenu, vidioc_g_ctrl,
|
||||
vidioc_s_ctrl, vidioc_g_ext_ctrls, vidioc_try_ext_ctrls and vidioc_s_ext_ctrls.
|
||||
Those are now no longer needed.
|
||||
Finally, remove all control functions from your v4l2_ioctl_ops (if any):
|
||||
vidioc_queryctrl, vidioc_query_ext_ctrl, vidioc_querymenu, vidioc_g_ctrl,
|
||||
vidioc_s_ctrl, vidioc_g_ext_ctrls, vidioc_try_ext_ctrls and vidioc_s_ext_ctrls.
|
||||
Those are now no longer needed.
|
||||
|
||||
1.3.2) For sub-device drivers do this:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct foo_dev {
|
||||
...
|
||||
struct v4l2_subdev sd;
|
||||
|
|
@ -94,10 +105,12 @@ Basic usage for V4L2 and sub-device drivers
|
|||
|
||||
foo->sd.ctrl_handler = &foo->ctrl_handler;
|
||||
|
||||
Where foo->sd is of type struct v4l2_subdev.
|
||||
Where foo->sd is of type struct v4l2_subdev.
|
||||
|
||||
1.4) Clean up the handler at the end:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
v4l2_ctrl_handler_free(&foo->ctrl_handler);
|
||||
|
||||
|
||||
|
|
@ -105,12 +118,16 @@ Basic usage for V4L2 and sub-device drivers
|
|||
|
||||
You add non-menu controls by calling v4l2_ctrl_new_std:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl,
|
||||
const struct v4l2_ctrl_ops *ops,
|
||||
u32 id, s32 min, s32 max, u32 step, s32 def);
|
||||
|
||||
Menu and integer menu controls are added by calling v4l2_ctrl_new_std_menu:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl,
|
||||
const struct v4l2_ctrl_ops *ops,
|
||||
u32 id, s32 max, s32 skip_mask, s32 def);
|
||||
|
|
@ -118,6 +135,8 @@ Menu and integer menu controls are added by calling v4l2_ctrl_new_std_menu:
|
|||
Menu controls with a driver specific menu are added by calling
|
||||
v4l2_ctrl_new_std_menu_items:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct v4l2_ctrl *v4l2_ctrl_new_std_menu_items(
|
||||
struct v4l2_ctrl_handler *hdl,
|
||||
const struct v4l2_ctrl_ops *ops, u32 id, s32 max,
|
||||
|
|
@ -126,12 +145,16 @@ v4l2_ctrl_new_std_menu_items:
|
|||
Integer menu controls with a driver specific menu can be added by calling
|
||||
v4l2_ctrl_new_int_menu:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl,
|
||||
const struct v4l2_ctrl_ops *ops,
|
||||
u32 id, s32 max, s32 def, const s64 *qmenu_int);
|
||||
|
||||
These functions are typically called right after the v4l2_ctrl_handler_init:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
static const s64 exp_bias_qmenu[] = {
|
||||
-2, -1, 0, 1, 2
|
||||
};
|
||||
|
|
@ -208,6 +231,8 @@ a bit faster that way.
|
|||
|
||||
3) Optionally force initial control setup:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
v4l2_ctrl_handler_setup(&foo->ctrl_handler);
|
||||
|
||||
This will call s_ctrl for all controls unconditionally. Effectively this
|
||||
|
|
@ -217,12 +242,16 @@ the hardware are in sync.
|
|||
|
||||
4) Finally: implement the v4l2_ctrl_ops
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
static const struct v4l2_ctrl_ops foo_ctrl_ops = {
|
||||
.s_ctrl = foo_s_ctrl,
|
||||
};
|
||||
|
||||
Usually all you need is s_ctrl:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
static int foo_s_ctrl(struct v4l2_ctrl *ctrl)
|
||||
{
|
||||
struct foo *state = container_of(ctrl->handler, struct foo, ctrl_handler);
|
||||
|
|
@ -247,16 +276,14 @@ to do any validation of control values, or implement QUERYCTRL, QUERY_EXT_CTRL
|
|||
and QUERYMENU. And G/S_CTRL as well as G/TRY/S_EXT_CTRLS are automatically supported.
|
||||
|
||||
|
||||
==============================================================================
|
||||
.. note::
|
||||
|
||||
The remainder of this document deals with more advanced topics and scenarios.
|
||||
In practice the basic usage as described above is sufficient for most drivers.
|
||||
|
||||
===============================================================================
|
||||
The remainder sections deal with more advanced controls topics and scenarios.
|
||||
In practice the basic usage as described above is sufficient for most drivers.
|
||||
|
||||
|
||||
Inheriting Controls
|
||||
===================
|
||||
-------------------
|
||||
|
||||
When a sub-device is registered with a V4L2 driver by calling
|
||||
v4l2_device_register_subdev() and the ctrl_handler fields of both v4l2_subdev
|
||||
|
|
@ -271,21 +298,25 @@ of v4l2_device.
|
|||
|
||||
|
||||
Accessing Control Values
|
||||
========================
|
||||
------------------------
|
||||
|
||||
The following union is used inside the control framework to access control
|
||||
values:
|
||||
|
||||
union v4l2_ctrl_ptr {
|
||||
s32 *p_s32;
|
||||
s64 *p_s64;
|
||||
char *p_char;
|
||||
void *p;
|
||||
};
|
||||
.. code-block:: none
|
||||
|
||||
union v4l2_ctrl_ptr {
|
||||
s32 *p_s32;
|
||||
s64 *p_s64;
|
||||
char *p_char;
|
||||
void *p;
|
||||
};
|
||||
|
||||
The v4l2_ctrl struct contains these fields that can be used to access both
|
||||
current and new values:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
s32 val;
|
||||
struct {
|
||||
s32 val;
|
||||
|
|
@ -297,6 +328,8 @@ current and new values:
|
|||
|
||||
If the control has a simple s32 type type, then:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
&ctrl->val == ctrl->p_new.p_s32
|
||||
&ctrl->cur.val == ctrl->p_cur.p_s32
|
||||
|
||||
|
|
@ -319,6 +352,8 @@ exception is for controls that return a volatile register such as a signal
|
|||
strength read-out that changes continuously. In that case you will need to
|
||||
implement g_volatile_ctrl like this:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
static int foo_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
|
||||
{
|
||||
switch (ctrl->id) {
|
||||
|
|
@ -335,6 +370,8 @@ changes.
|
|||
|
||||
To mark a control as volatile you have to set V4L2_CTRL_FLAG_VOLATILE:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
ctrl = v4l2_ctrl_new_std(&sd->ctrl_handler, ...);
|
||||
if (ctrl)
|
||||
ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
|
||||
|
|
@ -354,6 +391,8 @@ not to introduce deadlocks.
|
|||
Outside of the control ops you have to go through to helper functions to get
|
||||
or set a single control value safely in your driver:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl);
|
||||
int v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val);
|
||||
|
||||
|
|
@ -363,6 +402,8 @@ will result in a deadlock since these helpers lock the handler as well.
|
|||
|
||||
You can also take the handler lock yourself:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
mutex_lock(&state->ctrl_handler.lock);
|
||||
pr_info("String value is '%s'\n", ctrl1->p_cur.p_char);
|
||||
pr_info("Integer value is '%s'\n", ctrl2->cur.val);
|
||||
|
|
@ -370,10 +411,12 @@ You can also take the handler lock yourself:
|
|||
|
||||
|
||||
Menu Controls
|
||||
=============
|
||||
-------------
|
||||
|
||||
The v4l2_ctrl struct contains this union:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
union {
|
||||
u32 step;
|
||||
u32 menu_skip_mask;
|
||||
|
|
@ -396,10 +439,12 @@ control, or by calling v4l2_ctrl_new_std_menu().
|
|||
|
||||
|
||||
Custom Controls
|
||||
===============
|
||||
---------------
|
||||
|
||||
Driver specific controls can be created using v4l2_ctrl_new_custom():
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
static const struct v4l2_ctrl_config ctrl_filter = {
|
||||
.ops = &ctrl_custom_ops,
|
||||
.id = V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER,
|
||||
|
|
@ -422,7 +467,7 @@ control and will fill in the name, type and flags fields accordingly.
|
|||
|
||||
|
||||
Active and Grabbed Controls
|
||||
===========================
|
||||
---------------------------
|
||||
|
||||
If you get more complex relationships between controls, then you may have to
|
||||
activate and deactivate controls. For example, if the Chroma AGC control is
|
||||
|
|
@ -446,16 +491,18 @@ starts or stops streaming.
|
|||
|
||||
|
||||
Control Clusters
|
||||
================
|
||||
----------------
|
||||
|
||||
By default all controls are independent from the others. But in more
|
||||
complex scenarios you can get dependencies from one control to another.
|
||||
In that case you need to 'cluster' them:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct foo {
|
||||
struct v4l2_ctrl_handler ctrl_handler;
|
||||
#define AUDIO_CL_VOLUME (0)
|
||||
#define AUDIO_CL_MUTE (1)
|
||||
#define AUDIO_CL_VOLUME (0)
|
||||
#define AUDIO_CL_MUTE (1)
|
||||
struct v4l2_ctrl *audio_cluster[2];
|
||||
...
|
||||
};
|
||||
|
|
@ -474,6 +521,8 @@ composite control. Similar to how a 'struct' works in C.
|
|||
So when s_ctrl is called with V4L2_CID_AUDIO_VOLUME as argument, you should set
|
||||
all two controls belonging to the audio_cluster:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
static int foo_s_ctrl(struct v4l2_ctrl *ctrl)
|
||||
{
|
||||
struct foo *state = container_of(ctrl->handler, struct foo, ctrl_handler);
|
||||
|
|
@ -494,12 +543,16 @@ all two controls belonging to the audio_cluster:
|
|||
|
||||
In the example above the following are equivalent for the VOLUME case:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
ctrl == ctrl->cluster[AUDIO_CL_VOLUME] == state->audio_cluster[AUDIO_CL_VOLUME]
|
||||
ctrl->cluster[AUDIO_CL_MUTE] == state->audio_cluster[AUDIO_CL_MUTE]
|
||||
|
||||
In practice using cluster arrays like this becomes very tiresome. So instead
|
||||
the following equivalent method is used:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct {
|
||||
/* audio cluster */
|
||||
struct v4l2_ctrl *volume;
|
||||
|
|
@ -510,6 +563,8 @@ The anonymous struct is used to clearly 'cluster' these two control pointers,
|
|||
but it serves no other purpose. The effect is the same as creating an
|
||||
array with two control pointers. So you can just do:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
state->volume = v4l2_ctrl_new_std(&state->ctrl_handler, ...);
|
||||
state->mute = v4l2_ctrl_new_std(&state->ctrl_handler, ...);
|
||||
v4l2_ctrl_cluster(2, &state->volume);
|
||||
|
|
@ -539,7 +594,7 @@ The 'is_new' flag is always 1 when called from v4l2_ctrl_handler_setup().
|
|||
|
||||
|
||||
Handling autogain/gain-type Controls with Auto Clusters
|
||||
=======================================================
|
||||
-------------------------------------------------------
|
||||
|
||||
A common type of control cluster is one that handles 'auto-foo/foo'-type
|
||||
controls. Typical examples are autogain/gain, autoexposure/exposure,
|
||||
|
|
@ -564,8 +619,10 @@ changing that control affects the control flags of the manual controls.
|
|||
In order to simplify this a special variation of v4l2_ctrl_cluster was
|
||||
introduced:
|
||||
|
||||
void v4l2_ctrl_auto_cluster(unsigned ncontrols, struct v4l2_ctrl **controls,
|
||||
u8 manual_val, bool set_volatile);
|
||||
.. code-block:: none
|
||||
|
||||
void v4l2_ctrl_auto_cluster(unsigned ncontrols, struct v4l2_ctrl **controls,
|
||||
u8 manual_val, bool set_volatile);
|
||||
|
||||
The first two arguments are identical to v4l2_ctrl_cluster. The third argument
|
||||
tells the framework which value switches the cluster into manual mode. The
|
||||
|
|
@ -582,7 +639,7 @@ flag and volatile handling.
|
|||
|
||||
|
||||
VIDIOC_LOG_STATUS Support
|
||||
=========================
|
||||
-------------------------
|
||||
|
||||
This ioctl allow you to dump the current status of a driver to the kernel log.
|
||||
The v4l2_ctrl_handler_log_status(ctrl_handler, prefix) can be used to dump the
|
||||
|
|
@ -592,7 +649,7 @@ for you.
|
|||
|
||||
|
||||
Different Handlers for Different Video Nodes
|
||||
============================================
|
||||
--------------------------------------------
|
||||
|
||||
Usually the V4L2 driver has just one control handler that is global for
|
||||
all video nodes. But you can also specify different control handlers for
|
||||
|
|
@ -617,6 +674,8 @@ of another handler (e.g. for a video device node), then you should first add
|
|||
the controls to the first handler, add the other controls to the second
|
||||
handler and finally add the first handler to the second. For example:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
v4l2_ctrl_new_std(&radio_ctrl_handler, &radio_ops, V4L2_CID_AUDIO_VOLUME, ...);
|
||||
v4l2_ctrl_new_std(&radio_ctrl_handler, &radio_ops, V4L2_CID_AUDIO_MUTE, ...);
|
||||
v4l2_ctrl_new_std(&video_ctrl_handler, &video_ops, V4L2_CID_BRIGHTNESS, ...);
|
||||
|
|
@ -629,6 +688,8 @@ all controls.
|
|||
|
||||
Or you can add specific controls to a handler:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
volume = v4l2_ctrl_new_std(&video_ctrl_handler, &ops, V4L2_CID_AUDIO_VOLUME, ...);
|
||||
v4l2_ctrl_new_std(&video_ctrl_handler, &ops, V4L2_CID_BRIGHTNESS, ...);
|
||||
v4l2_ctrl_new_std(&video_ctrl_handler, &ops, V4L2_CID_CONTRAST, ...);
|
||||
|
|
@ -636,6 +697,8 @@ Or you can add specific controls to a handler:
|
|||
What you should not do is make two identical controls for two handlers.
|
||||
For example:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
v4l2_ctrl_new_std(&radio_ctrl_handler, &radio_ops, V4L2_CID_AUDIO_MUTE, ...);
|
||||
v4l2_ctrl_new_std(&video_ctrl_handler, &video_ops, V4L2_CID_AUDIO_MUTE, ...);
|
||||
|
||||
|
|
@ -645,7 +708,7 @@ can twiddle.
|
|||
|
||||
|
||||
Finding Controls
|
||||
================
|
||||
----------------
|
||||
|
||||
Normally you have created the controls yourself and you can store the struct
|
||||
v4l2_ctrl pointer into your own struct.
|
||||
|
|
@ -655,6 +718,8 @@ not own. For example, if you have to find a volume control from a subdev.
|
|||
|
||||
You can do that by calling v4l2_ctrl_find:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct v4l2_ctrl *volume;
|
||||
|
||||
volume = v4l2_ctrl_find(sd->ctrl_handler, V4L2_CID_AUDIO_VOLUME);
|
||||
|
|
@ -662,6 +727,8 @@ You can do that by calling v4l2_ctrl_find:
|
|||
Since v4l2_ctrl_find will lock the handler you have to be careful where you
|
||||
use it. For example, this is not a good idea:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct v4l2_ctrl_handler ctrl_handler;
|
||||
|
||||
v4l2_ctrl_new_std(&ctrl_handler, &video_ops, V4L2_CID_BRIGHTNESS, ...);
|
||||
|
|
@ -669,6 +736,8 @@ use it. For example, this is not a good idea:
|
|||
|
||||
...and in video_ops.s_ctrl:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
case V4L2_CID_BRIGHTNESS:
|
||||
contrast = v4l2_find_ctrl(&ctrl_handler, V4L2_CID_CONTRAST);
|
||||
...
|
||||
|
|
@ -680,7 +749,7 @@ It is recommended not to use this function from inside the control ops.
|
|||
|
||||
|
||||
Inheriting Controls
|
||||
===================
|
||||
-------------------
|
||||
|
||||
When one control handler is added to another using v4l2_ctrl_add_handler, then
|
||||
by default all controls from one are merged to the other. But a subdev might
|
||||
|
|
@ -689,6 +758,8 @@ not when it is used in consumer-level hardware. In that case you want to keep
|
|||
those low-level controls local to the subdev. You can do this by simply
|
||||
setting the 'is_private' flag of the control to 1:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
static const struct v4l2_ctrl_config ctrl_private = {
|
||||
.ops = &ctrl_custom_ops,
|
||||
.id = V4L2_CID_...,
|
||||
|
|
@ -705,7 +776,7 @@ These controls will now be skipped when v4l2_ctrl_add_handler is called.
|
|||
|
||||
|
||||
V4L2_CTRL_TYPE_CTRL_CLASS Controls
|
||||
==================================
|
||||
----------------------------------
|
||||
|
||||
Controls of this type can be used by GUIs to get the name of the control class.
|
||||
A fully featured GUI can make a dialog with multiple tabs with each tab
|
||||
|
|
@ -718,14 +789,16 @@ class is added.
|
|||
|
||||
|
||||
Adding Notify Callbacks
|
||||
=======================
|
||||
-----------------------
|
||||
|
||||
Sometimes the platform or bridge driver needs to be notified when a control
|
||||
from a sub-device driver changes. You can set a notify callback by calling
|
||||
this function:
|
||||
|
||||
void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl,
|
||||
void (*notify)(struct v4l2_ctrl *ctrl, void *priv), void *priv);
|
||||
.. code-block:: none
|
||||
|
||||
void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl,
|
||||
void (*notify)(struct v4l2_ctrl *ctrl, void *priv), void *priv);
|
||||
|
||||
Whenever the give control changes value the notify callback will be called
|
||||
with a pointer to the control and the priv pointer that was passed with
|
||||
|
|
@ -734,3 +807,8 @@ notify function is called.
|
|||
|
||||
There can be only one notify function per control handler. Any attempt
|
||||
to set another notify function will cause a WARN_ON.
|
||||
|
||||
v4l2_ctrl functions and data structures
|
||||
---------------------------------------
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-ctrls.h
|
||||
|
|
@ -0,0 +1,26 @@
|
|||
Video2Linux devices
|
||||
-------------------
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 1
|
||||
|
||||
v4l2-intro
|
||||
v4l2-dev
|
||||
v4l2-device
|
||||
v4l2-fh
|
||||
v4l2-subdev
|
||||
v4l2-event
|
||||
v4l2-controls
|
||||
v4l2-videobuf
|
||||
v4l2-videobuf2
|
||||
v4l2-clocks
|
||||
v4l2-dv-timings
|
||||
v4l2-flash-led-class
|
||||
v4l2-mc
|
||||
v4l2-mediabus
|
||||
v4l2-mem2mem
|
||||
v4l2-of
|
||||
v4l2-rect
|
||||
v4l2-tuner
|
||||
v4l2-common
|
||||
v4l2-tveeprom
|
||||
|
|
@ -0,0 +1,363 @@
|
|||
Video device' s internal representation
|
||||
=======================================
|
||||
|
||||
The actual device nodes in the ``/dev`` directory are created using the
|
||||
:c:type:`video_device` struct (``v4l2-dev.h``). This struct can either be
|
||||
allocated dynamically or embedded in a larger struct.
|
||||
|
||||
To allocate it dynamically use :c:func:`video_device_alloc`:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct video_device *vdev = video_device_alloc();
|
||||
|
||||
if (vdev == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
vdev->release = video_device_release;
|
||||
|
||||
If you embed it in a larger struct, then you must set the ``release()``
|
||||
callback to your own function:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct video_device *vdev = &my_vdev->vdev;
|
||||
|
||||
vdev->release = my_vdev_release;
|
||||
|
||||
The ``release()`` callback must be set and it is called when the last user
|
||||
of the video device exits.
|
||||
|
||||
The default :c:func:`video_device_release` callback currently
|
||||
just calls ``kfree`` to free the allocated memory.
|
||||
|
||||
There is also a ::c:func:`video_device_release_empty` function that does
|
||||
nothing (is empty) and should be used if the struct is embedded and there
|
||||
is nothing to do when it is released.
|
||||
|
||||
You should also set these fields of :c:type:`video_device`:
|
||||
|
||||
- :c:type:`video_device`->v4l2_dev: must be set to the :c:type:`v4l2_device`
|
||||
parent device.
|
||||
|
||||
- :c:type:`video_device`->name: set to something descriptive and unique.
|
||||
|
||||
- :c:type:`video_device`->vfl_dir: set this to ``VFL_DIR_RX`` for capture
|
||||
devices (``VFL_DIR_RX`` has value 0, so this is normally already the
|
||||
default), set to ``VFL_DIR_TX`` for output devices and ``VFL_DIR_M2M`` for mem2mem (codec) devices.
|
||||
|
||||
- :c:type:`video_device`->fops: set to the :c:type:`v4l2_file_operations`
|
||||
struct.
|
||||
|
||||
- :c:type:`video_device`->ioctl_ops: if you use the :c:type:`v4l2_ioctl_ops`
|
||||
to simplify ioctl maintenance (highly recommended to use this and it might
|
||||
become compulsory in the future!), then set this to your
|
||||
:c:type:`v4l2_ioctl_ops` struct. The :c:type:`video_device`->vfl_type and
|
||||
:c:type:`video_device`->vfl_dir fields are used to disable ops that do not
|
||||
match the type/dir combination. E.g. VBI ops are disabled for non-VBI nodes,
|
||||
and output ops are disabled for a capture device. This makes it possible to
|
||||
provide just one :c:type:`v4l2_ioctl_ops struct` for both vbi and
|
||||
video nodes.
|
||||
|
||||
- :c:type:`video_device`->lock: leave to ``NULL`` if you want to do all the
|
||||
locking in the driver. Otherwise you give it a pointer to a struct
|
||||
``mutex_lock`` and before the :c:type:`video_device`->unlocked_ioctl
|
||||
file operation is called this lock will be taken by the core and released
|
||||
afterwards. See the next section for more details.
|
||||
|
||||
- :c:type:`video_device`->queue: a pointer to the struct :c:type:`vb2_queue`
|
||||
associated with this device node.
|
||||
If queue is not ``NULL``, and queue->lock is not ``NULL``, then queue->lock
|
||||
is used for the queuing ioctls (``VIDIOC_REQBUFS``, ``CREATE_BUFS``,
|
||||
``QBUF``, ``DQBUF``, ``QUERYBUF``, ``PREPARE_BUF``, ``STREAMON`` and
|
||||
``STREAMOFF``) instead of the lock above.
|
||||
That way the :ref:`vb2 <vb2_framework>` queuing framework does not have
|
||||
to wait for other ioctls. This queue pointer is also used by the
|
||||
:ref:`vb2 <vb2_framework>` helper functions to check for
|
||||
queuing ownership (i.e. is the filehandle calling it allowed to do the
|
||||
operation).
|
||||
|
||||
- :c:type:`video_device`->prio: keeps track of the priorities. Used to
|
||||
implement ``VIDIOC_G_PRIORITY`` and ``VIDIOC_S_PRIORITY``.
|
||||
If left to ``NULL``, then it will use the struct :c:type:`v4l2_prio_state`
|
||||
in :c:type:`v4l2_device`. If you want to have a separate priority state per
|
||||
(group of) device node(s), then you can point it to your own struct
|
||||
:c:type:`v4l2_prio_state`.
|
||||
|
||||
- :c:type:`video_device`->dev_parent: you only set this if v4l2_device was
|
||||
registered with ``NULL`` as the parent ``device`` struct. This only happens
|
||||
in cases where one hardware device has multiple PCI devices that all share
|
||||
the same :c:type:`v4l2_device` core.
|
||||
|
||||
The cx88 driver is an example of this: one core :c:type:`v4l2_device` struct,
|
||||
but it is used by both a raw video PCI device (cx8800) and a MPEG PCI device
|
||||
(cx8802). Since the :c:type:`v4l2_device` cannot be associated with two PCI
|
||||
devices at the same time it is setup without a parent device. But when the
|
||||
struct :c:type:`video_device` is initialized you **do** know which parent
|
||||
PCI device to use and so you set ``dev_device`` to the correct PCI device.
|
||||
|
||||
If you use :c:type:`v4l2_ioctl_ops`, then you should set
|
||||
:c:type:`video_device`->unlocked_ioctl to :c:func:`video_ioctl2` in your
|
||||
:c:type:`v4l2_file_operations` struct.
|
||||
|
||||
In some cases you want to tell the core that a function you had specified in
|
||||
your :c:type:`v4l2_ioctl_ops` should be ignored. You can mark such ioctls by
|
||||
calling this function before :c:func:`video_register_device` is called:
|
||||
|
||||
:c:func:`v4l2_disable_ioctl <v4l2_disable_ioctl>`
|
||||
(:c:type:`vdev <video_device>`, cmd).
|
||||
|
||||
This tends to be needed if based on external factors (e.g. which card is
|
||||
being used) you want to turns off certain features in :c:type:`v4l2_ioctl_ops`
|
||||
without having to make a new struct.
|
||||
|
||||
The :c:type:`v4l2_file_operations` struct is a subset of file_operations.
|
||||
The main difference is that the inode argument is omitted since it is never
|
||||
used.
|
||||
|
||||
If integration with the media framework is needed, you must initialize the
|
||||
:c:type:`media_entity` struct embedded in the :c:type:`video_device` struct
|
||||
(entity field) by calling :c:func:`media_entity_pads_init`:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct media_pad *pad = &my_vdev->pad;
|
||||
int err;
|
||||
|
||||
err = media_entity_pads_init(&vdev->entity, 1, pad);
|
||||
|
||||
The pads array must have been previously initialized. There is no need to
|
||||
manually set the struct media_entity type and name fields.
|
||||
|
||||
A reference to the entity will be automatically acquired/released when the
|
||||
video device is opened/closed.
|
||||
|
||||
ioctls and locking
|
||||
------------------
|
||||
|
||||
The V4L core provides optional locking services. The main service is the
|
||||
lock field in struct :c:type:`video_device`, which is a pointer to a mutex.
|
||||
If you set this pointer, then that will be used by unlocked_ioctl to
|
||||
serialize all ioctls.
|
||||
|
||||
If you are using the :ref:`videobuf2 framework <vb2_framework>`, then there
|
||||
is a second lock that you can set: :c:type:`video_device`->queue->lock. If
|
||||
set, then this lock will be used instead of :c:type:`video_device`->lock
|
||||
to serialize all queuing ioctls (see the previous section
|
||||
for the full list of those ioctls).
|
||||
|
||||
The advantage of using a different lock for the queuing ioctls is that for some
|
||||
drivers (particularly USB drivers) certain commands such as setting controls
|
||||
can take a long time, so you want to use a separate lock for the buffer queuing
|
||||
ioctls. That way your ``VIDIOC_DQBUF`` doesn't stall because the driver is busy
|
||||
changing the e.g. exposure of the webcam.
|
||||
|
||||
Of course, you can always do all the locking yourself by leaving both lock
|
||||
pointers at ``NULL``.
|
||||
|
||||
If you use the old :ref:`videobuf framework <vb_framework>` then you must
|
||||
pass the :c:type:`video_device`->lock to the videobuf queue initialize
|
||||
function: if videobuf has to wait for a frame to arrive, then it will
|
||||
temporarily unlock the lock and relock it afterwards. If your driver also
|
||||
waits in the code, then you should do the same to allow other
|
||||
processes to access the device node while the first process is waiting for
|
||||
something.
|
||||
|
||||
In the case of :ref:`videobuf2 <vb2_framework>` you will need to implement the
|
||||
``wait_prepare()`` and ``wait_finish()`` callbacks to unlock/lock if applicable.
|
||||
If you use the ``queue->lock`` pointer, then you can use the helper functions
|
||||
:c:func:`vb2_ops_wait_prepare` and :cpp:func:`vb2_ops_wait_finish`.
|
||||
|
||||
The implementation of a hotplug disconnect should also take the lock from
|
||||
:c:type:`video_device` before calling v4l2_device_disconnect. If you are also
|
||||
using :c:type:`video_device`->queue->lock, then you have to first lock
|
||||
:c:type:`video_device`->queue->lock followed by :c:type:`video_device`->lock.
|
||||
That way you can be sure no ioctl is running when you call
|
||||
:c:type:`v4l2_device_disconnect`.
|
||||
|
||||
Video device registration
|
||||
-------------------------
|
||||
|
||||
Next you register the video device with :c:func:`video_register_device`.
|
||||
This will create the character device for you.
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
err = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
|
||||
if (err) {
|
||||
video_device_release(vdev); /* or kfree(my_vdev); */
|
||||
return err;
|
||||
}
|
||||
|
||||
If the :c:type:`v4l2_device` parent device has a not ``NULL`` mdev field,
|
||||
the video device entity will be automatically registered with the media
|
||||
device.
|
||||
|
||||
Which device is registered depends on the type argument. The following
|
||||
types exist:
|
||||
|
||||
- ``VFL_TYPE_GRABBER``: ``/dev/videoX`` for video input/output devices
|
||||
- ``VFL_TYPE_VBI``: ``/dev/vbiX`` for vertical blank data (i.e. closed captions, teletext)
|
||||
- ``VFL_TYPE_RADIO``: ``/dev/radioX`` for radio tuners
|
||||
- ``VFL_TYPE_SDR``: ``/dev/swradioX`` for Software Defined Radio tuners
|
||||
|
||||
The last argument gives you a certain amount of control over the device
|
||||
device node number used (i.e. the X in ``videoX``). Normally you will pass -1
|
||||
to let the v4l2 framework pick the first free number. But sometimes users
|
||||
want to select a specific node number. It is common that drivers allow
|
||||
the user to select a specific device node number through a driver module
|
||||
option. That number is then passed to this function and video_register_device
|
||||
will attempt to select that device node number. If that number was already
|
||||
in use, then the next free device node number will be selected and it
|
||||
will send a warning to the kernel log.
|
||||
|
||||
Another use-case is if a driver creates many devices. In that case it can
|
||||
be useful to place different video devices in separate ranges. For example,
|
||||
video capture devices start at 0, video output devices start at 16.
|
||||
So you can use the last argument to specify a minimum device node number
|
||||
and the v4l2 framework will try to pick the first free number that is equal
|
||||
or higher to what you passed. If that fails, then it will just pick the
|
||||
first free number.
|
||||
|
||||
Since in this case you do not care about a warning about not being able
|
||||
to select the specified device node number, you can call the function
|
||||
:c:func:`video_register_device_no_warn` instead.
|
||||
|
||||
Whenever a device node is created some attributes are also created for you.
|
||||
If you look in ``/sys/class/video4linux`` you see the devices. Go into e.g.
|
||||
``video0`` and you will see 'name', 'dev_debug' and 'index' attributes. The
|
||||
'name' attribute is the 'name' field of the video_device struct. The
|
||||
'dev_debug' attribute can be used to enable core debugging. See the next
|
||||
section for more detailed information on this.
|
||||
|
||||
The 'index' attribute is the index of the device node: for each call to
|
||||
:c:func:`video_register_device()` the index is just increased by 1. The
|
||||
first video device node you register always starts with index 0.
|
||||
|
||||
Users can setup udev rules that utilize the index attribute to make fancy
|
||||
device names (e.g. '``mpegX``' for MPEG video capture device nodes).
|
||||
|
||||
After the device was successfully registered, then you can use these fields:
|
||||
|
||||
- :c:type:`video_device`->vfl_type: the device type passed to
|
||||
:c:func:`video_register_device`.
|
||||
- :c:type:`video_device`->minor: the assigned device minor number.
|
||||
- :c:type:`video_device`->num: the device node number (i.e. the X in
|
||||
``videoX``).
|
||||
- :c:type:`video_device`->index: the device index number.
|
||||
|
||||
If the registration failed, then you need to call
|
||||
:c:func:`video_device_release` to free the allocated :c:type:`video_device`
|
||||
struct, or free your own struct if the :c:type:`video_device` was embedded in
|
||||
it. The ``vdev->release()`` callback will never be called if the registration
|
||||
failed, nor should you ever attempt to unregister the device if the
|
||||
registration failed.
|
||||
|
||||
video device debugging
|
||||
----------------------
|
||||
|
||||
The 'dev_debug' attribute that is created for each video, vbi, radio or swradio
|
||||
device in ``/sys/class/video4linux/<devX>/`` allows you to enable logging of
|
||||
file operations.
|
||||
|
||||
It is a bitmask and the following bits can be set:
|
||||
|
||||
|
||||
===== ================================================================
|
||||
Mask Description
|
||||
===== ================================================================
|
||||
0x01 Log the ioctl name and error code. VIDIOC_(D)QBUF ioctls are
|
||||
only logged if bit 0x08 is also set.
|
||||
0x02 Log the ioctl name arguments and error code. VIDIOC_(D)QBUF
|
||||
ioctls are
|
||||
only logged if bit 0x08 is also set.
|
||||
0x04 Log the file operations open, release, read, write, mmap and
|
||||
get_unmapped_area. The read and write operations are only
|
||||
logged if bit 0x08 is also set.
|
||||
0x08 Log the read and write file operations and the VIDIOC_QBUF and
|
||||
VIDIOC_DQBUF ioctls.
|
||||
0x10 Log the poll file operation.
|
||||
===== ================================================================
|
||||
|
||||
Video device cleanup
|
||||
--------------------
|
||||
|
||||
When the video device nodes have to be removed, either during the unload
|
||||
of the driver or because the USB device was disconnected, then you should
|
||||
unregister them with:
|
||||
|
||||
:c:func:`video_unregister_device`
|
||||
(:c:type:`vdev <video_device>`);
|
||||
|
||||
This will remove the device nodes from sysfs (causing udev to remove them
|
||||
from ``/dev``).
|
||||
|
||||
After :c:func:`video_unregister_device` returns no new opens can be done.
|
||||
However, in the case of USB devices some application might still have one of
|
||||
these device nodes open. So after the unregister all file operations (except
|
||||
release, of course) will return an error as well.
|
||||
|
||||
When the last user of the video device node exits, then the ``vdev->release()``
|
||||
callback is called and you can do the final cleanup there.
|
||||
|
||||
Don't forget to cleanup the media entity associated with the video device if
|
||||
it has been initialized:
|
||||
|
||||
:c:func:`media_entity_cleanup <media_entity_cleanup>`
|
||||
(&vdev->entity);
|
||||
|
||||
This can be done from the release callback.
|
||||
|
||||
|
||||
helper functions
|
||||
----------------
|
||||
|
||||
There are a few useful helper functions:
|
||||
|
||||
- file and :c:type:`video_device` private data
|
||||
|
||||
You can set/get driver private data in the video_device struct using:
|
||||
|
||||
:c:func:`video_get_drvdata <video_get_drvdata>`
|
||||
(:c:type:`vdev <video_device>`);
|
||||
|
||||
:c:func:`video_set_drvdata <video_set_drvdata>`
|
||||
(:c:type:`vdev <video_device>`);
|
||||
|
||||
Note that you can safely call :c:func:`video_set_drvdata` before calling
|
||||
:c:func:`video_register_device`.
|
||||
|
||||
And this function:
|
||||
|
||||
:c:func:`video_devdata <video_devdata>`
|
||||
(struct file \*file);
|
||||
|
||||
returns the video_device belonging to the file struct.
|
||||
|
||||
The :c:func:`video_devdata` function combines :cpp:func:`video_get_drvdata`
|
||||
with :c:func:`video_devdata`:
|
||||
|
||||
:c:func:`video_drvdata <video_drvdata>`
|
||||
(struct file \*file);
|
||||
|
||||
You can go from a :c:type:`video_device` struct to the v4l2_device struct using:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct v4l2_device *v4l2_dev = vdev->v4l2_dev;
|
||||
|
||||
- Device node name
|
||||
|
||||
The :c:type:`video_device` node kernel name can be retrieved using:
|
||||
|
||||
:c:func:`video_device_node_name <video_device_node_name>`
|
||||
(:c:type:`vdev <video_device>`);
|
||||
|
||||
The name is used as a hint by userspace tools such as udev. The function
|
||||
should be used where possible instead of accessing the video_device::num and
|
||||
video_device::minor fields.
|
||||
|
||||
video_device functions and data structures
|
||||
------------------------------------------
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-dev.h
|
||||
|
|
@ -0,0 +1,144 @@
|
|||
V4L2 device instance
|
||||
--------------------
|
||||
|
||||
Each device instance is represented by a struct :c:type:`v4l2_device`.
|
||||
Very simple devices can just allocate this struct, but most of the time you
|
||||
would embed this struct inside a larger struct.
|
||||
|
||||
You must register the device instance by calling:
|
||||
|
||||
:c:func:`v4l2_device_register <v4l2_device_register>`
|
||||
(dev, :c:type:`v4l2_dev <v4l2_device>`).
|
||||
|
||||
Registration will initialize the :c:type:`v4l2_device` struct. If the
|
||||
dev->driver_data field is ``NULL``, it will be linked to
|
||||
:c:type:`v4l2_dev <v4l2_device>` argument.
|
||||
|
||||
Drivers that want integration with the media device framework need to set
|
||||
dev->driver_data manually to point to the driver-specific device structure
|
||||
that embed the struct :c:type:`v4l2_device` instance. This is achieved by a
|
||||
``dev_set_drvdata()`` call before registering the V4L2 device instance.
|
||||
They must also set the struct :c:type:`v4l2_device` mdev field to point to a
|
||||
properly initialized and registered :c:type:`media_device` instance.
|
||||
|
||||
If :c:type:`v4l2_dev <v4l2_device>`\ ->name is empty then it will be set to a
|
||||
value derived from dev (driver name followed by the bus_id, to be precise).
|
||||
If you set it up before calling :c:func:`v4l2_device_register` then it will
|
||||
be untouched. If dev is ``NULL``, then you **must** setup
|
||||
:c:type:`v4l2_dev <v4l2_device>`\ ->name before calling
|
||||
:c:func:`v4l2_device_register`.
|
||||
|
||||
You can use :c:func:`v4l2_device_set_name` to set the name based on a driver
|
||||
name and a driver-global atomic_t instance. This will generate names like
|
||||
``ivtv0``, ``ivtv1``, etc. If the name ends with a digit, then it will insert
|
||||
a dash: ``cx18-0``, ``cx18-1``, etc. This function returns the instance number.
|
||||
|
||||
The first ``dev`` argument is normally the ``struct device`` pointer of a
|
||||
``pci_dev``, ``usb_interface`` or ``platform_device``. It is rare for dev to
|
||||
be ``NULL``, but it happens with ISA devices or when one device creates
|
||||
multiple PCI devices, thus making it impossible to associate
|
||||
:c:type:`v4l2_dev <v4l2_device>` with a particular parent.
|
||||
|
||||
You can also supply a ``notify()`` callback that can be called by sub-devices
|
||||
to notify you of events. Whether you need to set this depends on the
|
||||
sub-device. Any notifications a sub-device supports must be defined in a header
|
||||
in ``include/media/subdevice.h``.
|
||||
|
||||
V4L2 devices are unregistered by calling:
|
||||
|
||||
:c:func:`v4l2_device_unregister`
|
||||
(:c:type:`v4l2_dev <v4l2_device>`).
|
||||
|
||||
If the dev->driver_data field points to :c:type:`v4l2_dev <v4l2_device>`,
|
||||
it will be reset to ``NULL``. Unregistering will also automatically unregister
|
||||
all subdevs from the device.
|
||||
|
||||
If you have a hotpluggable device (e.g. a USB device), then when a disconnect
|
||||
happens the parent device becomes invalid. Since :c:type:`v4l2_device` has a
|
||||
pointer to that parent device it has to be cleared as well to mark that the
|
||||
parent is gone. To do this call:
|
||||
|
||||
:c:func:`v4l2_device_disconnect`
|
||||
(:c:type:`v4l2_dev <v4l2_device>`).
|
||||
|
||||
This does *not* unregister the subdevs, so you still need to call the
|
||||
:c:func:`v4l2_device_unregister` function for that. If your driver is not
|
||||
hotpluggable, then there is no need to call :c:func:`v4l2_device_disconnect`.
|
||||
|
||||
Sometimes you need to iterate over all devices registered by a specific
|
||||
driver. This is usually the case if multiple device drivers use the same
|
||||
hardware. E.g. the ivtvfb driver is a framebuffer driver that uses the ivtv
|
||||
hardware. The same is true for alsa drivers for example.
|
||||
|
||||
You can iterate over all registered devices as follows:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
static int callback(struct device *dev, void *p)
|
||||
{
|
||||
struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
|
||||
|
||||
/* test if this device was inited */
|
||||
if (v4l2_dev == NULL)
|
||||
return 0;
|
||||
...
|
||||
return 0;
|
||||
}
|
||||
|
||||
int iterate(void *p)
|
||||
{
|
||||
struct device_driver *drv;
|
||||
int err;
|
||||
|
||||
/* Find driver 'ivtv' on the PCI bus.
|
||||
pci_bus_type is a global. For USB busses use usb_bus_type. */
|
||||
drv = driver_find("ivtv", &pci_bus_type);
|
||||
/* iterate over all ivtv device instances */
|
||||
err = driver_for_each_device(drv, NULL, p, callback);
|
||||
put_driver(drv);
|
||||
return err;
|
||||
}
|
||||
|
||||
Sometimes you need to keep a running counter of the device instance. This is
|
||||
commonly used to map a device instance to an index of a module option array.
|
||||
|
||||
The recommended approach is as follows:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
static atomic_t drv_instance = ATOMIC_INIT(0);
|
||||
|
||||
static int drv_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
|
||||
{
|
||||
...
|
||||
state->instance = atomic_inc_return(&drv_instance) - 1;
|
||||
}
|
||||
|
||||
If you have multiple device nodes then it can be difficult to know when it is
|
||||
safe to unregister :c:type:`v4l2_device` for hotpluggable devices. For this
|
||||
purpose :c:type:`v4l2_device` has refcounting support. The refcount is
|
||||
increased whenever :c:func:`video_register_device` is called and it is
|
||||
decreased whenever that device node is released. When the refcount reaches
|
||||
zero, then the :c:type:`v4l2_device` release() callback is called. You can
|
||||
do your final cleanup there.
|
||||
|
||||
If other device nodes (e.g. ALSA) are created, then you can increase and
|
||||
decrease the refcount manually as well by calling:
|
||||
|
||||
:c:func:`v4l2_device_get`
|
||||
(:c:type:`v4l2_dev <v4l2_device>`).
|
||||
|
||||
or:
|
||||
|
||||
:c:func:`v4l2_device_put`
|
||||
(:c:type:`v4l2_dev <v4l2_device>`).
|
||||
|
||||
Since the initial refcount is 1 you also need to call
|
||||
:c:func:`v4l2_device_put` in the ``disconnect()`` callback (for USB devices)
|
||||
or in the ``remove()`` callback (for e.g. PCI devices), otherwise the refcount
|
||||
will never reach 0.
|
||||
|
||||
v4l2_device functions and data structures
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-device.h
|
||||
|
|
@ -0,0 +1,4 @@
|
|||
V4L2 DV Timings functions
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-dv-timings.h
|
||||
|
|
@ -0,0 +1,137 @@
|
|||
|
||||
V4L2 events
|
||||
-----------
|
||||
|
||||
The V4L2 events provide a generic way to pass events to user space.
|
||||
The driver must use :c:type:`v4l2_fh` to be able to support V4L2 events.
|
||||
|
||||
Events are defined by a type and an optional ID. The ID may refer to a V4L2
|
||||
object such as a control ID. If unused, then the ID is 0.
|
||||
|
||||
When the user subscribes to an event the driver will allocate a number of
|
||||
kevent structs for that event. So every (type, ID) event tuple will have
|
||||
its own set of kevent structs. This guarantees that if a driver is generating
|
||||
lots of events of one type in a short time, then that will not overwrite
|
||||
events of another type.
|
||||
|
||||
But if you get more events of one type than the number of kevents that were
|
||||
reserved, then the oldest event will be dropped and the new one added.
|
||||
|
||||
Furthermore, the internal struct :c:type:`v4l2_subscribed_event` has
|
||||
``merge()`` and ``replace()`` callbacks which drivers can set. These
|
||||
callbacks are called when a new event is raised and there is no more room.
|
||||
The ``replace()`` callback allows you to replace the payload of the old event
|
||||
with that of the new event, merging any relevant data from the old payload
|
||||
into the new payload that replaces it. It is called when this event type has
|
||||
only one kevent struct allocated. The ``merge()`` callback allows you to merge
|
||||
the oldest event payload into that of the second-oldest event payload. It is
|
||||
called when there are two or more kevent structs allocated.
|
||||
|
||||
This way no status information is lost, just the intermediate steps leading
|
||||
up to that state.
|
||||
|
||||
A good example of these ``replace``/``merge`` callbacks is in v4l2-event.c:
|
||||
``ctrls_replace()`` and ``ctrls_merge()`` callbacks for the control event.
|
||||
|
||||
.. note::
|
||||
these callbacks can be called from interrupt context, so they must
|
||||
be fast.
|
||||
|
||||
In order to queue events to video device, drivers should call:
|
||||
|
||||
:c:func:`v4l2_event_queue <v4l2_event_queue>`
|
||||
(:c:type:`vdev <video_device>`, :ref:`ev <v4l2-event>`)
|
||||
|
||||
The driver's only responsibility is to fill in the type and the data fields.
|
||||
The other fields will be filled in by V4L2.
|
||||
|
||||
Event subscription
|
||||
~~~~~~~~~~~~~~~~~~
|
||||
|
||||
Subscribing to an event is via:
|
||||
|
||||
:c:func:`v4l2_event_subscribe <v4l2_event_subscribe>`
|
||||
(:c:type:`fh <v4l2_fh>`, :ref:`sub <v4l2-event-subscription>` ,
|
||||
elems, :c:type:`ops <v4l2_subscribed_event_ops>`)
|
||||
|
||||
|
||||
This function is used to implement :c:type:`video_device`->
|
||||
:c:type:`ioctl_ops <v4l2_ioctl_ops>`-> ``vidioc_subscribe_event``,
|
||||
but the driver must check first if the driver is able to produce events
|
||||
with specified event id, and then should call
|
||||
:c:func:`v4l2_event_subscribe` to subscribe the event.
|
||||
|
||||
The elems argument is the size of the event queue for this event. If it is 0,
|
||||
then the framework will fill in a default value (this depends on the event
|
||||
type).
|
||||
|
||||
The ops argument allows the driver to specify a number of callbacks:
|
||||
|
||||
======== ==============================================================
|
||||
Callback Description
|
||||
======== ==============================================================
|
||||
add called when a new listener gets added (subscribing to the same
|
||||
event twice will only cause this callback to get called once)
|
||||
del called when a listener stops listening
|
||||
replace replace event 'old' with event 'new'.
|
||||
merge merge event 'old' into event 'new'.
|
||||
======== ==============================================================
|
||||
|
||||
All 4 callbacks are optional, if you don't want to specify any callbacks
|
||||
the ops argument itself maybe ``NULL``.
|
||||
|
||||
Unsubscribing an event
|
||||
~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
Unsubscribing to an event is via:
|
||||
|
||||
:c:func:`v4l2_event_unsubscribe <v4l2_event_unsubscribe>`
|
||||
(:c:type:`fh <v4l2_fh>`, :ref:`sub <v4l2-event-subscription>`)
|
||||
|
||||
This function is used to implement :c:type:`video_device`->
|
||||
:c:type:`ioctl_ops <v4l2_ioctl_ops>`-> ``vidioc_unsubscribe_event``.
|
||||
A driver may call :c:func:`v4l2_event_unsubscribe` directly unless it
|
||||
wants to be involved in unsubscription process.
|
||||
|
||||
The special type ``V4L2_EVENT_ALL`` may be used to unsubscribe all events. The
|
||||
drivers may want to handle this in a special way.
|
||||
|
||||
Check if there's a pending event
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
Checking if there's a pending event is via:
|
||||
|
||||
:c:func:`v4l2_event_pending <v4l2_event_pending>`
|
||||
(:c:type:`fh <v4l2_fh>`)
|
||||
|
||||
|
||||
This function returns the number of pending events. Useful when implementing
|
||||
poll.
|
||||
|
||||
How events work
|
||||
~~~~~~~~~~~~~~~
|
||||
|
||||
Events are delivered to user space through the poll system call. The driver
|
||||
can use :c:type:`v4l2_fh`->wait (a wait_queue_head_t) as the argument for
|
||||
``poll_wait()``.
|
||||
|
||||
There are standard and private events. New standard events must use the
|
||||
smallest available event type. The drivers must allocate their events from
|
||||
their own class starting from class base. Class base is
|
||||
``V4L2_EVENT_PRIVATE_START`` + n * 1000 where n is the lowest available number.
|
||||
The first event type in the class is reserved for future use, so the first
|
||||
available event type is 'class base + 1'.
|
||||
|
||||
An example on how the V4L2 events may be used can be found in the OMAP
|
||||
3 ISP driver (``drivers/media/platform/omap3isp``).
|
||||
|
||||
A subdev can directly send an event to the :c:type:`v4l2_device` notify
|
||||
function with ``V4L2_DEVICE_NOTIFY_EVENT``. This allows the bridge to map
|
||||
the subdev that sends the event to the video node(s) associated with the
|
||||
subdev that need to be informed about such an event.
|
||||
|
||||
V4L2 event functions and data structures
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-event.h
|
||||
|
||||
|
|
@ -0,0 +1,139 @@
|
|||
V4L2 File handlers
|
||||
------------------
|
||||
|
||||
struct :c:type:`v4l2_fh` provides a way to easily keep file handle specific
|
||||
data that is used by the V4L2 framework.
|
||||
|
||||
.. attention::
|
||||
New drivers must use struct :c:type:`v4l2_fh`
|
||||
since it is also used to implement priority handling
|
||||
(:ref:`VIDIOC_G_PRIORITY`).
|
||||
|
||||
The users of :c:type:`v4l2_fh` (in the V4L2 framework, not the driver) know
|
||||
whether a driver uses :c:type:`v4l2_fh` as its ``file->private_data`` pointer
|
||||
by testing the ``V4L2_FL_USES_V4L2_FH`` bit in :c:type:`video_device`->flags.
|
||||
This bit is set whenever :c:func:`v4l2_fh_init` is called.
|
||||
|
||||
struct :c:type:`v4l2_fh` is allocated as a part of the driver's own file handle
|
||||
structure and ``file->private_data`` is set to it in the driver's ``open()``
|
||||
function by the driver.
|
||||
|
||||
In many cases the struct :c:type:`v4l2_fh` will be embedded in a larger
|
||||
structure. In that case you should call:
|
||||
|
||||
#) :c:func:`v4l2_fh_init` and :cpp:func:`v4l2_fh_add` in ``open()``
|
||||
#) :c:func:`v4l2_fh_del` and :cpp:func:`v4l2_fh_exit` in ``release()``
|
||||
|
||||
Drivers can extract their own file handle structure by using the container_of
|
||||
macro.
|
||||
|
||||
Example:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct my_fh {
|
||||
int blah;
|
||||
struct v4l2_fh fh;
|
||||
};
|
||||
|
||||
...
|
||||
|
||||
int my_open(struct file *file)
|
||||
{
|
||||
struct my_fh *my_fh;
|
||||
struct video_device *vfd;
|
||||
int ret;
|
||||
|
||||
...
|
||||
|
||||
my_fh = kzalloc(sizeof(*my_fh), GFP_KERNEL);
|
||||
|
||||
...
|
||||
|
||||
v4l2_fh_init(&my_fh->fh, vfd);
|
||||
|
||||
...
|
||||
|
||||
file->private_data = &my_fh->fh;
|
||||
v4l2_fh_add(&my_fh->fh);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int my_release(struct file *file)
|
||||
{
|
||||
struct v4l2_fh *fh = file->private_data;
|
||||
struct my_fh *my_fh = container_of(fh, struct my_fh, fh);
|
||||
|
||||
...
|
||||
v4l2_fh_del(&my_fh->fh);
|
||||
v4l2_fh_exit(&my_fh->fh);
|
||||
kfree(my_fh);
|
||||
return 0;
|
||||
}
|
||||
|
||||
Below is a short description of the :c:type:`v4l2_fh` functions used:
|
||||
|
||||
:c:func:`v4l2_fh_init <v4l2_fh_init>`
|
||||
(:c:type:`fh <v4l2_fh>`, :c:type:`vdev <video_device>`)
|
||||
|
||||
|
||||
- Initialise the file handle. This **MUST** be performed in the driver's
|
||||
:c:type:`v4l2_file_operations`->open() handler.
|
||||
|
||||
|
||||
:c:func:`v4l2_fh_add <v4l2_fh_add>`
|
||||
(:c:type:`fh <v4l2_fh>`)
|
||||
|
||||
- Add a :c:type:`v4l2_fh` to :c:type:`video_device` file handle list.
|
||||
Must be called once the file handle is completely initialized.
|
||||
|
||||
:c:func:`v4l2_fh_del <v4l2_fh_del>`
|
||||
(:c:type:`fh <v4l2_fh>`)
|
||||
|
||||
- Unassociate the file handle from :c:type:`video_device`. The file handle
|
||||
exit function may now be called.
|
||||
|
||||
:c:func:`v4l2_fh_exit <v4l2_fh_exit>`
|
||||
(:c:type:`fh <v4l2_fh>`)
|
||||
|
||||
- Uninitialise the file handle. After uninitialisation the :c:type:`v4l2_fh`
|
||||
memory can be freed.
|
||||
|
||||
|
||||
If struct :c:type:`v4l2_fh` is not embedded, then you can use these helper functions:
|
||||
|
||||
:c:func:`v4l2_fh_open <v4l2_fh_open>`
|
||||
(struct file \*filp)
|
||||
|
||||
- This allocates a struct :c:type:`v4l2_fh`, initializes it and adds it to
|
||||
the struct :c:type:`video_device` associated with the file struct.
|
||||
|
||||
:c:func:`v4l2_fh_release <v4l2_fh_release>`
|
||||
(struct file \*filp)
|
||||
|
||||
- This deletes it from the struct :c:type:`video_device` associated with the
|
||||
file struct, uninitialised the :c:type:`v4l2_fh` and frees it.
|
||||
|
||||
These two functions can be plugged into the v4l2_file_operation's ``open()``
|
||||
and ``release()`` ops.
|
||||
|
||||
Several drivers need to do something when the first file handle is opened and
|
||||
when the last file handle closes. Two helper functions were added to check
|
||||
whether the :c:type:`v4l2_fh` struct is the only open filehandle of the
|
||||
associated device node:
|
||||
|
||||
:c:func:`v4l2_fh_is_singular <v4l2_fh_is_singular>`
|
||||
(:c:type:`fh <v4l2_fh>`)
|
||||
|
||||
- Returns 1 if the file handle is the only open file handle, else 0.
|
||||
|
||||
:c:func:`v4l2_fh_is_singular_file <v4l2_fh_is_singular_file>`
|
||||
(struct file \*filp)
|
||||
|
||||
- Same, but it calls v4l2_fh_is_singular with filp->private_data.
|
||||
|
||||
|
||||
V4L2 fh functions and data structures
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-fh.h
|
||||
|
|
@ -0,0 +1,4 @@
|
|||
V4L2 flash functions and data structures
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-flash-led-class.h
|
||||
|
|
@ -0,0 +1,74 @@
|
|||
Introduction
|
||||
------------
|
||||
|
||||
The V4L2 drivers tend to be very complex due to the complexity of the
|
||||
hardware: most devices have multiple ICs, export multiple device nodes in
|
||||
/dev, and create also non-V4L2 devices such as DVB, ALSA, FB, I2C and input
|
||||
(IR) devices.
|
||||
|
||||
Especially the fact that V4L2 drivers have to setup supporting ICs to
|
||||
do audio/video muxing/encoding/decoding makes it more complex than most.
|
||||
Usually these ICs are connected to the main bridge driver through one or
|
||||
more I2C busses, but other busses can also be used. Such devices are
|
||||
called 'sub-devices'.
|
||||
|
||||
For a long time the framework was limited to the video_device struct for
|
||||
creating V4L device nodes and video_buf for handling the video buffers
|
||||
(note that this document does not discuss the video_buf framework).
|
||||
|
||||
This meant that all drivers had to do the setup of device instances and
|
||||
connecting to sub-devices themselves. Some of this is quite complicated
|
||||
to do right and many drivers never did do it correctly.
|
||||
|
||||
There is also a lot of common code that could never be refactored due to
|
||||
the lack of a framework.
|
||||
|
||||
So this framework sets up the basic building blocks that all drivers
|
||||
need and this same framework should make it much easier to refactor
|
||||
common code into utility functions shared by all drivers.
|
||||
|
||||
A good example to look at as a reference is the v4l2-pci-skeleton.c
|
||||
source that is available in samples/v4l/. It is a skeleton driver for
|
||||
a PCI capture card, and demonstrates how to use the V4L2 driver
|
||||
framework. It can be used as a template for real PCI video capture driver.
|
||||
|
||||
Structure of a V4L driver
|
||||
-------------------------
|
||||
|
||||
All drivers have the following structure:
|
||||
|
||||
1) A struct for each device instance containing the device state.
|
||||
|
||||
2) A way of initializing and commanding sub-devices (if any).
|
||||
|
||||
3) Creating V4L2 device nodes (/dev/videoX, /dev/vbiX and /dev/radioX)
|
||||
and keeping track of device-node specific data.
|
||||
|
||||
4) Filehandle-specific structs containing per-filehandle data;
|
||||
|
||||
5) video buffer handling.
|
||||
|
||||
This is a rough schematic of how it all relates:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
device instances
|
||||
|
|
||||
+-sub-device instances
|
||||
|
|
||||
\-V4L2 device nodes
|
||||
|
|
||||
\-filehandle instances
|
||||
|
||||
|
||||
Structure of the V4L2 framework
|
||||
-------------------------------
|
||||
|
||||
The framework closely resembles the driver structure: it has a v4l2_device
|
||||
struct for the device instance data, a v4l2_subdev struct to refer to
|
||||
sub-device instances, the video_device struct stores V4L2 device node data
|
||||
and the v4l2_fh struct keeps track of filehandle instances.
|
||||
|
||||
The V4L2 framework also optionally integrates with the media framework. If a
|
||||
driver sets the struct v4l2_device mdev field, sub-devices and video nodes
|
||||
will automatically appear in the media framework as entities.
|
||||
|
|
@ -0,0 +1,4 @@
|
|||
V4L2 Media Controller functions and data structures
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-mc.h
|
||||
|
|
@ -0,0 +1,4 @@
|
|||
V4L2 Media Bus functions and data structures
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-mediabus.h
|
||||
|
|
@ -0,0 +1,4 @@
|
|||
V4L2 Memory to Memory functions and data structures
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-mem2mem.h
|
||||
|
|
@ -0,0 +1,3 @@
|
|||
V4L2 Open Firmware kAPI
|
||||
^^^^^^^^^^^^^^^^^^^^^^^
|
||||
.. kernel-doc:: include/media/v4l2-of.h
|
||||
|
|
@ -0,0 +1,4 @@
|
|||
V4L2 rect helper functions
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-rect.h
|
||||
|
|
@ -0,0 +1,445 @@
|
|||
V4L2 sub-devices
|
||||
----------------
|
||||
|
||||
Many drivers need to communicate with sub-devices. These devices can do all
|
||||
sort of tasks, but most commonly they handle audio and/or video muxing,
|
||||
encoding or decoding. For webcams common sub-devices are sensors and camera
|
||||
controllers.
|
||||
|
||||
Usually these are I2C devices, but not necessarily. In order to provide the
|
||||
driver with a consistent interface to these sub-devices the
|
||||
:c:type:`v4l2_subdev` struct (v4l2-subdev.h) was created.
|
||||
|
||||
Each sub-device driver must have a :c:type:`v4l2_subdev` struct. This struct
|
||||
can be stand-alone for simple sub-devices or it might be embedded in a larger
|
||||
struct if more state information needs to be stored. Usually there is a
|
||||
low-level device struct (e.g. ``i2c_client``) that contains the device data as
|
||||
setup by the kernel. It is recommended to store that pointer in the private
|
||||
data of :c:type:`v4l2_subdev` using :c:func:`v4l2_set_subdevdata`. That makes
|
||||
it easy to go from a :c:type:`v4l2_subdev` to the actual low-level bus-specific
|
||||
device data.
|
||||
|
||||
You also need a way to go from the low-level struct to :c:type:`v4l2_subdev`.
|
||||
For the common i2c_client struct the i2c_set_clientdata() call is used to store
|
||||
a :c:type:`v4l2_subdev` pointer, for other busses you may have to use other
|
||||
methods.
|
||||
|
||||
Bridges might also need to store per-subdev private data, such as a pointer to
|
||||
bridge-specific per-subdev private data. The :c:type:`v4l2_subdev` structure
|
||||
provides host private data for that purpose that can be accessed with
|
||||
:c:func:`v4l2_get_subdev_hostdata` and :cpp:func:`v4l2_set_subdev_hostdata`.
|
||||
|
||||
From the bridge driver perspective, you load the sub-device module and somehow
|
||||
obtain the :c:type:`v4l2_subdev` pointer. For i2c devices this is easy: you call
|
||||
``i2c_get_clientdata()``. For other busses something similar needs to be done.
|
||||
Helper functions exists for sub-devices on an I2C bus that do most of this
|
||||
tricky work for you.
|
||||
|
||||
Each :c:type:`v4l2_subdev` contains function pointers that sub-device drivers
|
||||
can implement (or leave ``NULL`` if it is not applicable). Since sub-devices can
|
||||
do so many different things and you do not want to end up with a huge ops struct
|
||||
of which only a handful of ops are commonly implemented, the function pointers
|
||||
are sorted according to category and each category has its own ops struct.
|
||||
|
||||
The top-level ops struct contains pointers to the category ops structs, which
|
||||
may be NULL if the subdev driver does not support anything from that category.
|
||||
|
||||
It looks like this:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct v4l2_subdev_core_ops {
|
||||
int (*log_status)(struct v4l2_subdev *sd);
|
||||
int (*init)(struct v4l2_subdev *sd, u32 val);
|
||||
...
|
||||
};
|
||||
|
||||
struct v4l2_subdev_tuner_ops {
|
||||
...
|
||||
};
|
||||
|
||||
struct v4l2_subdev_audio_ops {
|
||||
...
|
||||
};
|
||||
|
||||
struct v4l2_subdev_video_ops {
|
||||
...
|
||||
};
|
||||
|
||||
struct v4l2_subdev_pad_ops {
|
||||
...
|
||||
};
|
||||
|
||||
struct v4l2_subdev_ops {
|
||||
const struct v4l2_subdev_core_ops *core;
|
||||
const struct v4l2_subdev_tuner_ops *tuner;
|
||||
const struct v4l2_subdev_audio_ops *audio;
|
||||
const struct v4l2_subdev_video_ops *video;
|
||||
const struct v4l2_subdev_pad_ops *video;
|
||||
};
|
||||
|
||||
The core ops are common to all subdevs, the other categories are implemented
|
||||
depending on the sub-device. E.g. a video device is unlikely to support the
|
||||
audio ops and vice versa.
|
||||
|
||||
This setup limits the number of function pointers while still making it easy
|
||||
to add new ops and categories.
|
||||
|
||||
A sub-device driver initializes the :c:type:`v4l2_subdev` struct using:
|
||||
|
||||
:c:func:`v4l2_subdev_init <v4l2_subdev_init>`
|
||||
(:c:type:`sd <v4l2_subdev>`, &\ :c:type:`ops <v4l2_subdev_ops>`).
|
||||
|
||||
|
||||
Afterwards you need to initialize :c:type:`sd <v4l2_subdev>`->name with a
|
||||
unique name and set the module owner. This is done for you if you use the
|
||||
i2c helper functions.
|
||||
|
||||
If integration with the media framework is needed, you must initialize the
|
||||
:c:type:`media_entity` struct embedded in the :c:type:`v4l2_subdev` struct
|
||||
(entity field) by calling :c:func:`media_entity_pads_init`, if the entity has
|
||||
pads:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct media_pad *pads = &my_sd->pads;
|
||||
int err;
|
||||
|
||||
err = media_entity_pads_init(&sd->entity, npads, pads);
|
||||
|
||||
The pads array must have been previously initialized. There is no need to
|
||||
manually set the struct :c:type:`media_entity` function and name fields, but the
|
||||
revision field must be initialized if needed.
|
||||
|
||||
A reference to the entity will be automatically acquired/released when the
|
||||
subdev device node (if any) is opened/closed.
|
||||
|
||||
Don't forget to cleanup the media entity before the sub-device is destroyed:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
media_entity_cleanup(&sd->entity);
|
||||
|
||||
If the subdev driver intends to process video and integrate with the media
|
||||
framework, it must implement format related functionality using
|
||||
:c:type:`v4l2_subdev_pad_ops` instead of :c:type:`v4l2_subdev_video_ops`.
|
||||
|
||||
In that case, the subdev driver may set the link_validate field to provide
|
||||
its own link validation function. The link validation function is called for
|
||||
every link in the pipeline where both of the ends of the links are V4L2
|
||||
sub-devices. The driver is still responsible for validating the correctness
|
||||
of the format configuration between sub-devices and video nodes.
|
||||
|
||||
If link_validate op is not set, the default function
|
||||
:c:func:`v4l2_subdev_link_validate_default` is used instead. This function
|
||||
ensures that width, height and the media bus pixel code are equal on both source
|
||||
and sink of the link. Subdev drivers are also free to use this function to
|
||||
perform the checks mentioned above in addition to their own checks.
|
||||
|
||||
There are currently two ways to register subdevices with the V4L2 core. The
|
||||
first (traditional) possibility is to have subdevices registered by bridge
|
||||
drivers. This can be done when the bridge driver has the complete information
|
||||
about subdevices connected to it and knows exactly when to register them. This
|
||||
is typically the case for internal subdevices, like video data processing units
|
||||
within SoCs or complex PCI(e) boards, camera sensors in USB cameras or connected
|
||||
to SoCs, which pass information about them to bridge drivers, usually in their
|
||||
platform data.
|
||||
|
||||
There are however also situations where subdevices have to be registered
|
||||
asynchronously to bridge devices. An example of such a configuration is a Device
|
||||
Tree based system where information about subdevices is made available to the
|
||||
system independently from the bridge devices, e.g. when subdevices are defined
|
||||
in DT as I2C device nodes. The API used in this second case is described further
|
||||
below.
|
||||
|
||||
Using one or the other registration method only affects the probing process, the
|
||||
run-time bridge-subdevice interaction is in both cases the same.
|
||||
|
||||
In the synchronous case a device (bridge) driver needs to register the
|
||||
:c:type:`v4l2_subdev` with the v4l2_device:
|
||||
|
||||
:c:func:`v4l2_device_register_subdev <v4l2_device_register_subdev>`
|
||||
(:c:type:`v4l2_dev <v4l2_device>`, :c:type:`sd <v4l2_subdev>`).
|
||||
|
||||
This can fail if the subdev module disappeared before it could be registered.
|
||||
After this function was called successfully the subdev->dev field points to
|
||||
the :c:type:`v4l2_device`.
|
||||
|
||||
If the v4l2_device parent device has a non-NULL mdev field, the sub-device
|
||||
entity will be automatically registered with the media device.
|
||||
|
||||
You can unregister a sub-device using:
|
||||
|
||||
:c:func:`v4l2_device_unregister_subdev <v4l2_device_unregister_subdev>`
|
||||
(:c:type:`sd <v4l2_subdev>`).
|
||||
|
||||
|
||||
Afterwards the subdev module can be unloaded and
|
||||
:c:type:`sd <v4l2_subdev>`->dev == ``NULL``.
|
||||
|
||||
You can call an ops function either directly:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
err = sd->ops->core->g_std(sd, &norm);
|
||||
|
||||
but it is better and easier to use this macro:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
err = v4l2_subdev_call(sd, core, g_std, &norm);
|
||||
|
||||
The macro will to the right ``NULL`` pointer checks and returns ``-ENODEV``
|
||||
if :c:type:`sd <v4l2_subdev>` is ``NULL``, ``-ENOIOCTLCMD`` if either
|
||||
:c:type:`sd <v4l2_subdev>`->core or :c:type:`sd <v4l2_subdev>`->core->g_std is ``NULL``, or the actual result of the
|
||||
:c:type:`sd <v4l2_subdev>`->ops->core->g_std ops.
|
||||
|
||||
It is also possible to call all or a subset of the sub-devices:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
v4l2_device_call_all(v4l2_dev, 0, core, g_std, &norm);
|
||||
|
||||
Any subdev that does not support this ops is skipped and error results are
|
||||
ignored. If you want to check for errors use this:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
err = v4l2_device_call_until_err(v4l2_dev, 0, core, g_std, &norm);
|
||||
|
||||
Any error except ``-ENOIOCTLCMD`` will exit the loop with that error. If no
|
||||
errors (except ``-ENOIOCTLCMD``) occurred, then 0 is returned.
|
||||
|
||||
The second argument to both calls is a group ID. If 0, then all subdevs are
|
||||
called. If non-zero, then only those whose group ID match that value will
|
||||
be called. Before a bridge driver registers a subdev it can set
|
||||
:c:type:`sd <v4l2_subdev>`->grp_id to whatever value it wants (it's 0 by
|
||||
default). This value is owned by the bridge driver and the sub-device driver
|
||||
will never modify or use it.
|
||||
|
||||
The group ID gives the bridge driver more control how callbacks are called.
|
||||
For example, there may be multiple audio chips on a board, each capable of
|
||||
changing the volume. But usually only one will actually be used when the
|
||||
user want to change the volume. You can set the group ID for that subdev to
|
||||
e.g. AUDIO_CONTROLLER and specify that as the group ID value when calling
|
||||
``v4l2_device_call_all()``. That ensures that it will only go to the subdev
|
||||
that needs it.
|
||||
|
||||
If the sub-device needs to notify its v4l2_device parent of an event, then
|
||||
it can call ``v4l2_subdev_notify(sd, notification, arg)``. This macro checks
|
||||
whether there is a ``notify()`` callback defined and returns ``-ENODEV`` if not.
|
||||
Otherwise the result of the ``notify()`` call is returned.
|
||||
|
||||
The advantage of using :c:type:`v4l2_subdev` is that it is a generic struct and
|
||||
does not contain any knowledge about the underlying hardware. So a driver might
|
||||
contain several subdevs that use an I2C bus, but also a subdev that is
|
||||
controlled through GPIO pins. This distinction is only relevant when setting
|
||||
up the device, but once the subdev is registered it is completely transparent.
|
||||
|
||||
In the asynchronous case subdevice probing can be invoked independently of the
|
||||
bridge driver availability. The subdevice driver then has to verify whether all
|
||||
the requirements for a successful probing are satisfied. This can include a
|
||||
check for a master clock availability. If any of the conditions aren't satisfied
|
||||
the driver might decide to return ``-EPROBE_DEFER`` to request further reprobing
|
||||
attempts. Once all conditions are met the subdevice shall be registered using
|
||||
the :c:func:`v4l2_async_register_subdev` function. Unregistration is
|
||||
performed using the :c:func:`v4l2_async_unregister_subdev` call. Subdevices
|
||||
registered this way are stored in a global list of subdevices, ready to be
|
||||
picked up by bridge drivers.
|
||||
|
||||
Bridge drivers in turn have to register a notifier object with an array of
|
||||
subdevice descriptors that the bridge device needs for its operation. This is
|
||||
performed using the :c:func:`v4l2_async_notifier_register` call. To
|
||||
unregister the notifier the driver has to call
|
||||
:c:func:`v4l2_async_notifier_unregister`. The former of the two functions
|
||||
takes two arguments: a pointer to struct :c:type:`v4l2_device` and a pointer to
|
||||
struct :c:type:`v4l2_async_notifier`. The latter contains a pointer to an array
|
||||
of pointers to subdevice descriptors of type struct :c:type:`v4l2_async_subdev`
|
||||
type. The V4L2 core will then use these descriptors to match asynchronously
|
||||
registered
|
||||
subdevices to them. If a match is detected the ``.bound()`` notifier callback
|
||||
is called. After all subdevices have been located the .complete() callback is
|
||||
called. When a subdevice is removed from the system the .unbind() method is
|
||||
called. All three callbacks are optional.
|
||||
|
||||
V4L2 sub-device userspace API
|
||||
-----------------------------
|
||||
|
||||
Beside exposing a kernel API through the :c:type:`v4l2_subdev_ops` structure,
|
||||
V4L2 sub-devices can also be controlled directly by userspace applications.
|
||||
|
||||
Device nodes named ``v4l-subdev``\ *X* can be created in ``/dev`` to access
|
||||
sub-devices directly. If a sub-device supports direct userspace configuration
|
||||
it must set the ``V4L2_SUBDEV_FL_HAS_DEVNODE`` flag before being registered.
|
||||
|
||||
After registering sub-devices, the :c:type:`v4l2_device` driver can create
|
||||
device nodes for all registered sub-devices marked with
|
||||
``V4L2_SUBDEV_FL_HAS_DEVNODE`` by calling
|
||||
:c:func:`v4l2_device_register_subdev_nodes`. Those device nodes will be
|
||||
automatically removed when sub-devices are unregistered.
|
||||
|
||||
The device node handles a subset of the V4L2 API.
|
||||
|
||||
``VIDIOC_QUERYCTRL``,
|
||||
``VIDIOC_QUERYMENU``,
|
||||
``VIDIOC_G_CTRL``,
|
||||
``VIDIOC_S_CTRL``,
|
||||
``VIDIOC_G_EXT_CTRLS``,
|
||||
``VIDIOC_S_EXT_CTRLS`` and
|
||||
``VIDIOC_TRY_EXT_CTRLS``:
|
||||
|
||||
The controls ioctls are identical to the ones defined in V4L2. They
|
||||
behave identically, with the only exception that they deal only with
|
||||
controls implemented in the sub-device. Depending on the driver, those
|
||||
controls can be also be accessed through one (or several) V4L2 device
|
||||
nodes.
|
||||
|
||||
``VIDIOC_DQEVENT``,
|
||||
``VIDIOC_SUBSCRIBE_EVENT`` and
|
||||
``VIDIOC_UNSUBSCRIBE_EVENT``
|
||||
|
||||
The events ioctls are identical to the ones defined in V4L2. They
|
||||
behave identically, with the only exception that they deal only with
|
||||
events generated by the sub-device. Depending on the driver, those
|
||||
events can also be reported by one (or several) V4L2 device nodes.
|
||||
|
||||
Sub-device drivers that want to use events need to set the
|
||||
``V4L2_SUBDEV_USES_EVENTS`` :c:type:`v4l2_subdev`.flags and initialize
|
||||
:c:type:`v4l2_subdev`.nevents to events queue depth before registering
|
||||
the sub-device. After registration events can be queued as usual on the
|
||||
:c:type:`v4l2_subdev`.devnode device node.
|
||||
|
||||
To properly support events, the ``poll()`` file operation is also
|
||||
implemented.
|
||||
|
||||
Private ioctls
|
||||
|
||||
All ioctls not in the above list are passed directly to the sub-device
|
||||
driver through the core::ioctl operation.
|
||||
|
||||
|
||||
I2C sub-device drivers
|
||||
----------------------
|
||||
|
||||
Since these drivers are so common, special helper functions are available to
|
||||
ease the use of these drivers (``v4l2-common.h``).
|
||||
|
||||
The recommended method of adding :c:type:`v4l2_subdev` support to an I2C driver
|
||||
is to embed the :c:type:`v4l2_subdev` struct into the state struct that is
|
||||
created for each I2C device instance. Very simple devices have no state
|
||||
struct and in that case you can just create a :c:type:`v4l2_subdev` directly.
|
||||
|
||||
A typical state struct would look like this (where 'chipname' is replaced by
|
||||
the name of the chip):
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct chipname_state {
|
||||
struct v4l2_subdev sd;
|
||||
... /* additional state fields */
|
||||
};
|
||||
|
||||
Initialize the :c:type:`v4l2_subdev` struct as follows:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
v4l2_i2c_subdev_init(&state->sd, client, subdev_ops);
|
||||
|
||||
This function will fill in all the fields of :c:type:`v4l2_subdev` ensure that
|
||||
the :c:type:`v4l2_subdev` and i2c_client both point to one another.
|
||||
|
||||
You should also add a helper inline function to go from a :c:type:`v4l2_subdev`
|
||||
pointer to a chipname_state struct:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
static inline struct chipname_state *to_state(struct v4l2_subdev *sd)
|
||||
{
|
||||
return container_of(sd, struct chipname_state, sd);
|
||||
}
|
||||
|
||||
Use this to go from the :c:type:`v4l2_subdev` struct to the ``i2c_client``
|
||||
struct:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
||||
|
||||
And this to go from an ``i2c_client`` to a :c:type:`v4l2_subdev` struct:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
||||
|
||||
Make sure to call
|
||||
:c:func:`v4l2_device_unregister_subdev`\ (:c:type:`sd <v4l2_subdev>`)
|
||||
when the ``remove()`` callback is called. This will unregister the sub-device
|
||||
from the bridge driver. It is safe to call this even if the sub-device was
|
||||
never registered.
|
||||
|
||||
You need to do this because when the bridge driver destroys the i2c adapter
|
||||
the ``remove()`` callbacks are called of the i2c devices on that adapter.
|
||||
After that the corresponding v4l2_subdev structures are invalid, so they
|
||||
have to be unregistered first. Calling
|
||||
:c:func:`v4l2_device_unregister_subdev`\ (:c:type:`sd <v4l2_subdev>`)
|
||||
from the ``remove()`` callback ensures that this is always done correctly.
|
||||
|
||||
|
||||
The bridge driver also has some helper functions it can use:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct v4l2_subdev *sd = v4l2_i2c_new_subdev(v4l2_dev, adapter,
|
||||
"module_foo", "chipid", 0x36, NULL);
|
||||
|
||||
This loads the given module (can be ``NULL`` if no module needs to be loaded)
|
||||
and calls :c:func:`i2c_new_device` with the given ``i2c_adapter`` and
|
||||
chip/address arguments. If all goes well, then it registers the subdev with
|
||||
the v4l2_device.
|
||||
|
||||
You can also use the last argument of :c:func:`v4l2_i2c_new_subdev` to pass
|
||||
an array of possible I2C addresses that it should probe. These probe addresses
|
||||
are only used if the previous argument is 0. A non-zero argument means that you
|
||||
know the exact i2c address so in that case no probing will take place.
|
||||
|
||||
Both functions return ``NULL`` if something went wrong.
|
||||
|
||||
Note that the chipid you pass to :c:func:`v4l2_i2c_new_subdev` is usually
|
||||
the same as the module name. It allows you to specify a chip variant, e.g.
|
||||
"saa7114" or "saa7115". In general though the i2c driver autodetects this.
|
||||
The use of chipid is something that needs to be looked at more closely at a
|
||||
later date. It differs between i2c drivers and as such can be confusing.
|
||||
To see which chip variants are supported you can look in the i2c driver code
|
||||
for the i2c_device_id table. This lists all the possibilities.
|
||||
|
||||
There are two more helper functions:
|
||||
|
||||
:c:func:`v4l2_i2c_new_subdev_cfg`: this function adds new irq and
|
||||
platform_data arguments and has both 'addr' and 'probed_addrs' arguments:
|
||||
if addr is not 0 then that will be used (non-probing variant), otherwise the
|
||||
probed_addrs are probed.
|
||||
|
||||
For example: this will probe for address 0x10:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct v4l2_subdev *sd = v4l2_i2c_new_subdev_cfg(v4l2_dev, adapter,
|
||||
"module_foo", "chipid", 0, NULL, 0, I2C_ADDRS(0x10));
|
||||
|
||||
:c:func:`v4l2_i2c_new_subdev_board` uses an :c:type:`i2c_board_info` struct
|
||||
which is passed to the i2c driver and replaces the irq, platform_data and addr
|
||||
arguments.
|
||||
|
||||
If the subdev supports the s_config core ops, then that op is called with
|
||||
the irq and platform_data arguments after the subdev was setup.
|
||||
|
||||
The older :c:func:`v4l2_i2c_new_subdev` and
|
||||
:c:func:`v4l2_i2c_new_probed_subdev` functions will call ``s_config`` as
|
||||
well, but with irq set to 0 and platform_data set to ``NULL``.
|
||||
|
||||
V4L2 sub-device functions and data structures
|
||||
---------------------------------------------
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-subdev.h
|
||||
|
||||
.. kernel-doc:: include/media/v4l2-async.h
|
||||
|
|
@ -0,0 +1,6 @@
|
|||
Tuner functions and data structures
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. kernel-doc:: include/media/tuner.h
|
||||
|
||||
.. kernel-doc:: include/media/tuner-types.h
|
||||
|
|
@ -0,0 +1,4 @@
|
|||
Hauppauge TV EEPROM functions and data structures
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. kernel-doc:: include/media/tveeprom.h
|
||||
|
|
@ -1,7 +1,20 @@
|
|||
An introduction to the videobuf layer
|
||||
Jonathan Corbet <corbet@lwn.net>
|
||||
.. _vb_framework:
|
||||
|
||||
Videobuf Framework
|
||||
==================
|
||||
|
||||
Author: Jonathan Corbet <corbet@lwn.net>
|
||||
|
||||
Current as of 2.6.33
|
||||
|
||||
.. note::
|
||||
|
||||
The videobuf framework was deprecated in favor of videobuf2. Shouldn't
|
||||
be used on new drivers.
|
||||
|
||||
Introduction
|
||||
------------
|
||||
|
||||
The videobuf layer functions as a sort of glue layer between a V4L2 driver
|
||||
and user space. It handles the allocation and management of buffers for
|
||||
the storage of video frames. There is a set of functions which can be used
|
||||
|
|
@ -14,6 +27,7 @@ author, but the payback comes in the form of reduced code in the driver and
|
|||
a consistent implementation of the V4L2 user-space API.
|
||||
|
||||
Buffer types
|
||||
------------
|
||||
|
||||
Not all video devices use the same kind of buffers. In fact, there are (at
|
||||
least) three common variations:
|
||||
|
|
@ -48,10 +62,13 @@ the kernel and a description of this technique is currently beyond the
|
|||
scope of this document.]
|
||||
|
||||
Data structures, callbacks, and initialization
|
||||
----------------------------------------------
|
||||
|
||||
Depending on which type of buffers are being used, the driver should
|
||||
include one of the following files:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
<media/videobuf-dma-sg.h> /* Physically scattered */
|
||||
<media/videobuf-vmalloc.h> /* vmalloc() buffers */
|
||||
<media/videobuf-dma-contig.h> /* Physically contiguous */
|
||||
|
|
@ -65,6 +82,8 @@ the queue.
|
|||
The next step is to write four simple callbacks to help videobuf deal with
|
||||
the management of buffers:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct videobuf_queue_ops {
|
||||
int (*buf_setup)(struct videobuf_queue *q,
|
||||
unsigned int *count, unsigned int *size);
|
||||
|
|
@ -91,6 +110,8 @@ passed to buf_prepare(), which should set the buffer's size, width, height,
|
|||
and field fields properly. If the buffer's state field is
|
||||
VIDEOBUF_NEEDS_INIT, the driver should pass it to:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
int videobuf_iolock(struct videobuf_queue* q, struct videobuf_buffer *vb,
|
||||
struct v4l2_framebuffer *fbuf);
|
||||
|
||||
|
|
@ -110,6 +131,8 @@ Finally, buf_release() is called when a buffer is no longer intended to be
|
|||
used. The driver should ensure that there is no I/O active on the buffer,
|
||||
then pass it to the appropriate free routine(s):
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
/* Scatter/gather drivers */
|
||||
int videobuf_dma_unmap(struct videobuf_queue *q,
|
||||
struct videobuf_dmabuf *dma);
|
||||
|
|
@ -124,6 +147,8 @@ then pass it to the appropriate free routine(s):
|
|||
|
||||
One way to ensure that a buffer is no longer under I/O is to pass it to:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
int videobuf_waiton(struct videobuf_buffer *vb, int non_blocking, int intr);
|
||||
|
||||
Here, vb is the buffer, non_blocking indicates whether non-blocking I/O
|
||||
|
|
@ -131,12 +156,15 @@ should be used (it should be zero in the buf_release() case), and intr
|
|||
controls whether an interruptible wait is used.
|
||||
|
||||
File operations
|
||||
---------------
|
||||
|
||||
At this point, much of the work is done; much of the rest is slipping
|
||||
videobuf calls into the implementation of the other driver callbacks. The
|
||||
first step is in the open() function, which must initialize the
|
||||
videobuf queue. The function to use depends on the type of buffer used:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
void videobuf_queue_sg_init(struct videobuf_queue *q,
|
||||
struct videobuf_queue_ops *ops,
|
||||
struct device *dev,
|
||||
|
|
@ -182,6 +210,8 @@ applications have a chance of working with the device. Videobuf makes it
|
|||
easy to do that with the same code. To implement read(), the driver need
|
||||
only make a call to one of:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
ssize_t videobuf_read_one(struct videobuf_queue *q,
|
||||
char __user *data, size_t count,
|
||||
loff_t *ppos, int nonblocking);
|
||||
|
|
@ -201,6 +231,8 @@ anticipation of another read() call happening in the near future).
|
|||
|
||||
The poll() function can usually be implemented with a direct call to:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
unsigned int videobuf_poll_stream(struct file *file,
|
||||
struct videobuf_queue *q,
|
||||
poll_table *wait);
|
||||
|
|
@ -213,6 +245,8 @@ the mmap() system call to enable user space to access the data. In many
|
|||
V4L2 drivers, the often-complex mmap() implementation simplifies to a
|
||||
single call to:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
int videobuf_mmap_mapper(struct videobuf_queue *q,
|
||||
struct vm_area_struct *vma);
|
||||
|
||||
|
|
@ -220,6 +254,8 @@ Everything else is handled by the videobuf code.
|
|||
|
||||
The release() function requires two separate videobuf calls:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
void videobuf_stop(struct videobuf_queue *q);
|
||||
int videobuf_mmap_free(struct videobuf_queue *q);
|
||||
|
||||
|
|
@ -233,12 +269,15 @@ buffers are still mapped, but every driver in the 2.6.32 kernel cheerfully
|
|||
ignores its return value.
|
||||
|
||||
ioctl() operations
|
||||
------------------
|
||||
|
||||
The V4L2 API includes a very long list of driver callbacks to respond to
|
||||
the many ioctl() commands made available to user space. A number of these
|
||||
- those associated with streaming I/O - turn almost directly into videobuf
|
||||
calls. The relevant helper functions are:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
int videobuf_reqbufs(struct videobuf_queue *q,
|
||||
struct v4l2_requestbuffers *req);
|
||||
int videobuf_querybuf(struct videobuf_queue *q, struct v4l2_buffer *b);
|
||||
|
|
@ -259,6 +298,7 @@ complex, of course, since they will also need to deal with starting and
|
|||
stopping the capture engine.
|
||||
|
||||
Buffer allocation
|
||||
-----------------
|
||||
|
||||
Thus far, we have talked about buffers, but have not looked at how they are
|
||||
allocated. The scatter/gather case is the most complex on this front. For
|
||||
|
|
@ -272,11 +312,15 @@ If the driver needs to do its own memory allocation, it should be done in
|
|||
the vidioc_reqbufs() function, *after* calling videobuf_reqbufs(). The
|
||||
first step is a call to:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct videobuf_dmabuf *videobuf_to_dma(struct videobuf_buffer *buf);
|
||||
|
||||
The returned videobuf_dmabuf structure (defined in
|
||||
<media/videobuf-dma-sg.h>) includes a couple of relevant fields:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
struct scatterlist *sglist;
|
||||
int sglen;
|
||||
|
||||
|
|
@ -300,6 +344,7 @@ kernel drivers, or those contained within huge pages, will work with these
|
|||
drivers.
|
||||
|
||||
Filling the buffers
|
||||
-------------------
|
||||
|
||||
The final part of a videobuf implementation has no direct callback - it's
|
||||
the portion of the code which actually puts frame data into the buffers,
|
||||
|
|
@ -331,10 +376,14 @@ For scatter/gather drivers, the needed memory pointers will be found in the
|
|||
scatterlist structure described above. Drivers using the vmalloc() method
|
||||
can get a memory pointer with:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
void *videobuf_to_vmalloc(struct videobuf_buffer *buf);
|
||||
|
||||
For contiguous DMA drivers, the function to use is:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
dma_addr_t videobuf_to_dma_contig(struct videobuf_buffer *buf);
|
||||
|
||||
The contiguous DMA API goes out of its way to hide the kernel-space address
|
||||
|
|
@ -0,0 +1,10 @@
|
|||
.. _vb2_framework:
|
||||
|
||||
V4L2 videobuf2 functions and data structures
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. kernel-doc:: include/media/videobuf2-core.h
|
||||
|
||||
.. kernel-doc:: include/media/videobuf2-v4l2.h
|
||||
|
||||
.. kernel-doc:: include/media/videobuf2-memops.h
|
||||
|
|
@ -0,0 +1,43 @@
|
|||
# Ignore header name
|
||||
ignore define _LINUX_LIRC_H
|
||||
|
||||
# Ignore helper macros
|
||||
|
||||
ignore define lirc_t
|
||||
|
||||
ignore define LIRC_SPACE
|
||||
ignore define LIRC_PULSE
|
||||
ignore define LIRC_FREQUENCY
|
||||
ignore define LIRC_TIMEOUT
|
||||
ignore define LIRC_VALUE
|
||||
ignore define LIRC_MODE2
|
||||
ignore define LIRC_IS_SPACE
|
||||
ignore define LIRC_IS_PULSE
|
||||
ignore define LIRC_IS_FREQUENCY
|
||||
ignore define LIRC_IS_TIMEOUT
|
||||
|
||||
ignore define LIRC_MODE2SEND
|
||||
ignore define LIRC_SEND2MODE
|
||||
ignore define LIRC_MODE2REC
|
||||
ignore define LIRC_REC2MODE
|
||||
|
||||
ignore define LIRC_CAN_SEND
|
||||
ignore define LIRC_CAN_REC
|
||||
|
||||
ignore define LIRC_CAN_SEND_MASK
|
||||
ignore define LIRC_CAN_REC_MASK
|
||||
ignore define LIRC_CAN_SET_REC_DUTY_CYCLE
|
||||
|
||||
# Undocumented macros
|
||||
|
||||
ignore define PULSE_BIT
|
||||
ignore define PULSE_MASK
|
||||
|
||||
ignore define LIRC_MODE2_SPACE
|
||||
ignore define LIRC_MODE2_PULSE
|
||||
ignore define LIRC_MODE2_TIMEOUT
|
||||
|
||||
ignore define LIRC_VALUE_MASK
|
||||
ignore define LIRC_MODE2_MASK
|
||||
|
||||
ignore define LIRC_MODE_RAW
|
||||
|
|
@ -0,0 +1,30 @@
|
|||
# Ignore header name
|
||||
ignore define __LINUX_MEDIA_H
|
||||
|
||||
# Ignore macros
|
||||
ignore define MEDIA_API_VERSION
|
||||
ignore define MEDIA_ENT_F_BASE
|
||||
ignore define MEDIA_ENT_F_OLD_BASE
|
||||
ignore define MEDIA_ENT_F_OLD_SUBDEV_BASE
|
||||
ignore define MEDIA_INTF_T_DVB_BASE
|
||||
ignore define MEDIA_INTF_T_V4L_BASE
|
||||
ignore define MEDIA_INTF_T_ALSA_BASE
|
||||
|
||||
#ignore legacy entity type macros
|
||||
ignore define MEDIA_ENT_TYPE_SHIFT
|
||||
ignore define MEDIA_ENT_TYPE_MASK
|
||||
ignore define MEDIA_ENT_SUBTYPE_MASK
|
||||
ignore define MEDIA_ENT_T_DEVNODE_UNKNOWN
|
||||
ignore define MEDIA_ENT_T_DEVNODE
|
||||
ignore define MEDIA_ENT_T_DEVNODE_V4L
|
||||
ignore define MEDIA_ENT_T_DEVNODE_FB
|
||||
ignore define MEDIA_ENT_T_DEVNODE_ALSA
|
||||
ignore define MEDIA_ENT_T_DEVNODE_DVB
|
||||
ignore define MEDIA_ENT_T_UNKNOWN
|
||||
ignore define MEDIA_ENT_T_V4L2_VIDEO
|
||||
ignore define MEDIA_ENT_T_V4L2_SUBDEV
|
||||
ignore define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR
|
||||
ignore define MEDIA_ENT_T_V4L2_SUBDEV_FLASH
|
||||
ignore define MEDIA_ENT_T_V4L2_SUBDEV_LENS
|
||||
ignore define MEDIA_ENT_T_V4L2_SUBDEV_DECODER
|
||||
ignore define MEDIA_ENT_T_V4L2_SUBDEV_TUNER
|
||||
Binary file not shown.
File diff suppressed because one or more lines are too long
|
After Width: | Height: | Size: 35 KiB |
|
|
@ -0,0 +1,34 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. include:: <isonum.txt>
|
||||
|
||||
===================================
|
||||
Media subsystem kernel internal API
|
||||
===================================
|
||||
|
||||
**Copyright** |copy| 2009-2016 : LinuxTV Developers
|
||||
|
||||
This documentation is free software; you can redistribute it and/or modify it
|
||||
under the terms of the GNU General Public License as published by the Free
|
||||
Software Foundation; either version 2 of the License, or (at your option) any
|
||||
later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful, but WITHOUT
|
||||
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details.
|
||||
|
||||
For more details see the file COPYING in the source distribution of Linux.
|
||||
|
||||
.. class:: toc-title
|
||||
|
||||
Table of Contents
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 5
|
||||
:numbered:
|
||||
|
||||
kapi/v4l2-core
|
||||
kapi/dtv-core
|
||||
kapi/rc-core
|
||||
kapi/mc-core
|
||||
|
|
@ -0,0 +1,31 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. include:: <isonum.txt>
|
||||
|
||||
########################################
|
||||
Linux Media Infrastructure userspace API
|
||||
########################################
|
||||
|
||||
**Copyright** |copy| 2009-2016 : LinuxTV Developers
|
||||
|
||||
Permission is granted to copy, distribute and/or modify this document
|
||||
under the terms of the GNU Free Documentation License, Version 1.1 or
|
||||
any later version published by the Free Software Foundation. A copy of
|
||||
the license is included in the chapter entitled "GNU Free Documentation
|
||||
License".
|
||||
|
||||
.. class:: toc-title
|
||||
|
||||
Table of Contents
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 1
|
||||
|
||||
intro
|
||||
uapi/v4l/v4l2
|
||||
uapi/dvb/dvbapi
|
||||
uapi/rc/remote_controllers
|
||||
uapi/mediactl/media-controller
|
||||
uapi/cec/cec-api
|
||||
uapi/gen-errors
|
||||
uapi/fdl-appendix
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
# Ignore header name
|
||||
ignore define _DVBNET_H_
|
||||
|
||||
# Ignore old ioctls/structs
|
||||
ignore ioctl __NET_ADD_IF_OLD
|
||||
ignore ioctl __NET_GET_IF_OLD
|
||||
ignore struct __dvb_net_if_old
|
||||
|
||||
# Macros used at struct dvb_net_if
|
||||
replace define DVB_NET_FEEDTYPE_MPE dvb-net-if
|
||||
replace define DVB_NET_FEEDTYPE_ULE dvb-net-if
|
||||
|
|
@ -0,0 +1,43 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. include:: <isonum.txt>
|
||||
|
||||
.. _cec:
|
||||
|
||||
#########################################
|
||||
Part V - Consumer Electronics Control API
|
||||
#########################################
|
||||
|
||||
This part describes the CEC: Consumer Electronics Control
|
||||
|
||||
.. class:: toc-title
|
||||
|
||||
Table of Contents
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 5
|
||||
:numbered:
|
||||
|
||||
cec-intro
|
||||
cec-funcs
|
||||
cec-header
|
||||
|
||||
|
||||
**********************
|
||||
Revision and Copyright
|
||||
**********************
|
||||
Authors:
|
||||
|
||||
- Verkuil, Hans <hans.verkuil@cisco.com>
|
||||
|
||||
- Initial version.
|
||||
|
||||
**Copyright** |copy| 2016 : Hans Verkuil
|
||||
|
||||
****************
|
||||
Revision History
|
||||
****************
|
||||
|
||||
:revision: 1.0.0 / 2016-03-17 (*hv*)
|
||||
|
||||
Initial revision
|
||||
|
|
@ -0,0 +1,49 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _cec-func-close:
|
||||
|
||||
***********
|
||||
cec close()
|
||||
***********
|
||||
|
||||
Name
|
||||
====
|
||||
|
||||
cec-close - Close a cec device
|
||||
|
||||
|
||||
Synopsis
|
||||
========
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
#include <unistd.h>
|
||||
|
||||
|
||||
.. cpp:function:: int close( int fd )
|
||||
|
||||
Arguments
|
||||
=========
|
||||
|
||||
``fd``
|
||||
File descriptor returned by :ref:`open() <func-open>`.
|
||||
|
||||
|
||||
Description
|
||||
===========
|
||||
|
||||
.. note:: This documents the proposed CEC API. This API is not yet finalized
|
||||
and is currently only available as a staging kernel module.
|
||||
|
||||
Closes the cec device. Resources associated with the file descriptor are
|
||||
freed. The device configuration remain unchanged.
|
||||
|
||||
|
||||
Return Value
|
||||
============
|
||||
|
||||
:c:func:`close()` returns 0 on success. On error, -1 is returned, and
|
||||
``errno`` is set appropriately. Possible error codes are:
|
||||
|
||||
``EBADF``
|
||||
``fd`` is not a valid open file descriptor.
|
||||
|
|
@ -0,0 +1,68 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _cec-func-ioctl:
|
||||
|
||||
***********
|
||||
cec ioctl()
|
||||
***********
|
||||
|
||||
Name
|
||||
====
|
||||
|
||||
cec-ioctl - Control a cec device
|
||||
|
||||
Synopsis
|
||||
========
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
#include <sys/ioctl.h>
|
||||
|
||||
|
||||
.. cpp:function:: int ioctl( int fd, int request, void *argp )
|
||||
|
||||
Arguments
|
||||
=========
|
||||
|
||||
``fd``
|
||||
File descriptor returned by :ref:`open() <func-open>`.
|
||||
|
||||
``request``
|
||||
CEC ioctl request code as defined in the cec.h header file, for
|
||||
example :ref:`CEC_ADAP_G_CAPS`.
|
||||
|
||||
``argp``
|
||||
Pointer to a request-specific structure.
|
||||
|
||||
|
||||
Description
|
||||
===========
|
||||
|
||||
.. note:: This documents the proposed CEC API. This API is not yet finalized
|
||||
and is currently only available as a staging kernel module.
|
||||
|
||||
The :c:func:`ioctl()` function manipulates cec device parameters. The
|
||||
argument ``fd`` must be an open file descriptor.
|
||||
|
||||
The ioctl ``request`` code specifies the cec function to be called. It
|
||||
has encoded in it whether the argument is an input, output or read/write
|
||||
parameter, and the size of the argument ``argp`` in bytes.
|
||||
|
||||
Macros and structures definitions specifying cec ioctl requests and
|
||||
their parameters are located in the cec.h header file. All cec ioctl
|
||||
requests, their respective function and parameters are specified in
|
||||
:ref:`cec-user-func`.
|
||||
|
||||
|
||||
Return Value
|
||||
============
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
||||
Request-specific error codes are listed in the individual requests
|
||||
descriptions.
|
||||
|
||||
When an ioctl that takes an output or read/write parameter fails, the
|
||||
parameter remains unmodified.
|
||||
|
|
@ -0,0 +1,80 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _cec-func-open:
|
||||
|
||||
**********
|
||||
cec open()
|
||||
**********
|
||||
|
||||
Name
|
||||
====
|
||||
|
||||
cec-open - Open a cec device
|
||||
|
||||
Synopsis
|
||||
========
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
#include <fcntl.h>
|
||||
|
||||
|
||||
.. cpp:function:: int open( const char *device_name, int flags )
|
||||
|
||||
|
||||
Arguments
|
||||
=========
|
||||
|
||||
``device_name``
|
||||
Device to be opened.
|
||||
|
||||
``flags``
|
||||
Open flags. Access mode must be ``O_RDWR``.
|
||||
|
||||
When the ``O_NONBLOCK`` flag is given, the
|
||||
:ref:`CEC_RECEIVE <CEC_RECEIVE>` and :ref:`CEC_DQEVENT <CEC_DQEVENT>` ioctls
|
||||
will return the ``EAGAIN`` error code when no message or event is available, and
|
||||
ioctls :ref:`CEC_TRANSMIT <CEC_TRANSMIT>`,
|
||||
:ref:`CEC_ADAP_S_PHYS_ADDR <CEC_ADAP_S_PHYS_ADDR>` and
|
||||
:ref:`CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_ADDRS>`
|
||||
all return 0.
|
||||
|
||||
Other flags have no effect.
|
||||
|
||||
|
||||
Description
|
||||
===========
|
||||
|
||||
.. note:: This documents the proposed CEC API. This API is not yet finalized
|
||||
and is currently only available as a staging kernel module.
|
||||
|
||||
To open a cec device applications call :c:func:`open()` with the
|
||||
desired device name. The function has no side effects; the device
|
||||
configuration remain unchanged.
|
||||
|
||||
When the device is opened in read-only mode, attempts to modify its
|
||||
configuration will result in an error, and ``errno`` will be set to
|
||||
EBADF.
|
||||
|
||||
|
||||
Return Value
|
||||
============
|
||||
|
||||
:c:func:`open()` returns the new file descriptor on success. On error,
|
||||
-1 is returned, and ``errno`` is set appropriately. Possible error codes
|
||||
include:
|
||||
|
||||
``EACCES``
|
||||
The requested access to the file is not allowed.
|
||||
|
||||
``EMFILE``
|
||||
The process already has the maximum number of files open.
|
||||
|
||||
``ENFILE``
|
||||
The system limit on the total number of open files has been reached.
|
||||
|
||||
``ENOMEM``
|
||||
Insufficient kernel memory was available.
|
||||
|
||||
``ENXIO``
|
||||
No device corresponding to this device special file exists.
|
||||
|
|
@ -0,0 +1,70 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _cec-func-poll:
|
||||
|
||||
**********
|
||||
cec poll()
|
||||
**********
|
||||
|
||||
Name
|
||||
====
|
||||
|
||||
cec-poll - Wait for some event on a file descriptor
|
||||
|
||||
|
||||
Synopsis
|
||||
========
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
#include <sys/poll.h>
|
||||
|
||||
|
||||
.. cpp:function:: int poll( struct pollfd *ufds, unsigned int nfds, int timeout )
|
||||
|
||||
Arguments
|
||||
=========
|
||||
|
||||
|
||||
Description
|
||||
===========
|
||||
|
||||
.. note:: This documents the proposed CEC API. This API is not yet finalized
|
||||
and is currently only available as a staging kernel module.
|
||||
|
||||
With the :c:func:`poll()` function applications can wait for CEC
|
||||
events.
|
||||
|
||||
On success :c:func:`poll()` returns the number of file descriptors
|
||||
that have been selected (that is, file descriptors for which the
|
||||
``revents`` field of the respective :c:type:`struct pollfd` structure
|
||||
is non-zero). CEC devices set the ``POLLIN`` and ``POLLRDNORM`` flags in
|
||||
the ``revents`` field if there are messages in the receive queue. If the
|
||||
transmit queue has room for new messages, the ``POLLOUT`` and
|
||||
``POLLWRNORM`` flags are set. If there are events in the event queue,
|
||||
then the ``POLLPRI`` flag is set. When the function timed out it returns
|
||||
a value of zero, on failure it returns -1 and the ``errno`` variable is
|
||||
set appropriately.
|
||||
|
||||
For more details see the :c:func:`poll()` manual page.
|
||||
|
||||
|
||||
Return Value
|
||||
============
|
||||
|
||||
On success, :c:func:`poll()` returns the number structures which have
|
||||
non-zero ``revents`` fields, or zero if the call timed out. On error -1
|
||||
is returned, and the ``errno`` variable is set appropriately:
|
||||
|
||||
``EBADF``
|
||||
One or more of the ``ufds`` members specify an invalid file
|
||||
descriptor.
|
||||
|
||||
``EFAULT``
|
||||
``ufds`` references an inaccessible memory area.
|
||||
|
||||
``EINTR``
|
||||
The call was interrupted by a signal.
|
||||
|
||||
``EINVAL``
|
||||
The ``nfds`` argument is greater than ``OPEN_MAX``.
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
.. _cec-user-func:
|
||||
|
||||
******************
|
||||
Function Reference
|
||||
******************
|
||||
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 1
|
||||
:numbered:
|
||||
|
||||
cec-func-open
|
||||
cec-func-close
|
||||
cec-func-ioctl
|
||||
cec-func-poll
|
||||
cec-ioc-adap-g-caps
|
||||
cec-ioc-adap-g-log-addrs
|
||||
cec-ioc-adap-g-phys-addr
|
||||
cec-ioc-dqevent
|
||||
cec-ioc-g-mode
|
||||
cec-ioc-receive
|
||||
|
|
@ -0,0 +1,10 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _cec_header:
|
||||
|
||||
***************
|
||||
CEC Header File
|
||||
***************
|
||||
|
||||
.. kernel-include:: $BUILDDIR/cec.h.rst
|
||||
|
||||
|
|
@ -0,0 +1,31 @@
|
|||
.. _cec-intro:
|
||||
|
||||
Introduction
|
||||
============
|
||||
|
||||
.. note:: This documents the proposed CEC API. This API is not yet finalized
|
||||
and is currently only available as a staging kernel module.
|
||||
|
||||
HDMI connectors provide a single pin for use by the Consumer Electronics
|
||||
Control protocol. This protocol allows different devices connected by an
|
||||
HDMI cable to communicate. The protocol for CEC version 1.4 is defined
|
||||
in supplements 1 (CEC) and 2 (HEAC or HDMI Ethernet and Audio Return
|
||||
Channel) of the HDMI 1.4a (:ref:`hdmi`) specification and the
|
||||
extensions added to CEC version 2.0 are defined in chapter 11 of the
|
||||
HDMI 2.0 (:ref:`hdmi2`) specification.
|
||||
|
||||
The bitrate is very slow (effectively no more than 36 bytes per second)
|
||||
and is based on the ancient AV.link protocol used in old SCART
|
||||
connectors. The protocol closely resembles a crazy Rube Goldberg
|
||||
contraption and is an unholy mix of low and high level messages. Some
|
||||
messages, especially those part of the HEAC protocol layered on top of
|
||||
CEC, need to be handled by the kernel, others can be handled either by
|
||||
the kernel or by userspace.
|
||||
|
||||
In addition, CEC can be implemented in HDMI receivers, transmitters and
|
||||
in USB devices that have an HDMI input and an HDMI output and that
|
||||
control just the CEC pin.
|
||||
|
||||
Drivers that support CEC will create a CEC device node (/dev/cecX) to
|
||||
give userspace access to the CEC adapter. The
|
||||
:ref:`CEC_ADAP_G_CAPS` ioctl will tell userspace what it is allowed to do.
|
||||
|
|
@ -0,0 +1,165 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _CEC_ADAP_G_CAPS:
|
||||
|
||||
*********************
|
||||
ioctl CEC_ADAP_G_CAPS
|
||||
*********************
|
||||
|
||||
Name
|
||||
====
|
||||
|
||||
CEC_ADAP_G_CAPS - Query device capabilities
|
||||
|
||||
Synopsis
|
||||
========
|
||||
|
||||
.. cpp:function:: int ioctl( int fd, int request, struct cec_caps *argp )
|
||||
|
||||
Arguments
|
||||
=========
|
||||
|
||||
``fd``
|
||||
File descriptor returned by :ref:`open() <cec-func-open>`.
|
||||
|
||||
``request``
|
||||
CEC_ADAP_G_CAPS
|
||||
|
||||
``argp``
|
||||
|
||||
|
||||
Description
|
||||
===========
|
||||
|
||||
.. note:: This documents the proposed CEC API. This API is not yet finalized
|
||||
and is currently only available as a staging kernel module.
|
||||
|
||||
All cec devices must support :ref:`ioctl CEC_ADAP_G_CAPS <CEC_ADAP_G_CAPS>`. To query
|
||||
device information, applications call the ioctl with a pointer to a
|
||||
struct :ref:`cec_caps <cec-caps>`. The driver fills the structure and
|
||||
returns the information to the application. The ioctl never fails.
|
||||
|
||||
|
||||
.. _cec-caps:
|
||||
|
||||
.. flat-table:: struct cec_caps
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 1 1 16
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- char
|
||||
|
||||
- ``driver[32]``
|
||||
|
||||
- The name of the cec adapter driver.
|
||||
|
||||
- .. row 2
|
||||
|
||||
- char
|
||||
|
||||
- ``name[32]``
|
||||
|
||||
- The name of this CEC adapter. The combination ``driver`` and
|
||||
``name`` must be unique.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- __u32
|
||||
|
||||
- ``capabilities``
|
||||
|
||||
- The capabilities of the CEC adapter, see
|
||||
:ref:`cec-capabilities`.
|
||||
|
||||
- .. row 4
|
||||
|
||||
- __u32
|
||||
|
||||
- ``version``
|
||||
|
||||
- CEC Framework API version, formatted with the ``KERNEL_VERSION()``
|
||||
macro.
|
||||
|
||||
|
||||
|
||||
.. _cec-capabilities:
|
||||
|
||||
.. flat-table:: CEC Capabilities Flags
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 3 1 8
|
||||
|
||||
|
||||
- .. _`CEC-CAP-PHYS-ADDR`:
|
||||
|
||||
- ``CEC_CAP_PHYS_ADDR``
|
||||
|
||||
- 0x00000001
|
||||
|
||||
- Userspace has to configure the physical address by calling
|
||||
:ref:`ioctl CEC_ADAP_S_PHYS_ADDR <CEC_ADAP_S_PHYS_ADDR>`. If
|
||||
this capability isn't set, then setting the physical address is
|
||||
handled by the kernel whenever the EDID is set (for an HDMI
|
||||
receiver) or read (for an HDMI transmitter).
|
||||
|
||||
- .. _`CEC-CAP-LOG-ADDRS`:
|
||||
|
||||
- ``CEC_CAP_LOG_ADDRS``
|
||||
|
||||
- 0x00000002
|
||||
|
||||
- Userspace has to configure the logical addresses by calling
|
||||
:ref:`ioctl CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_ADDRS>`. If
|
||||
this capability isn't set, then the kernel will have configured
|
||||
this.
|
||||
|
||||
- .. _`CEC-CAP-TRANSMIT`:
|
||||
|
||||
- ``CEC_CAP_TRANSMIT``
|
||||
|
||||
- 0x00000004
|
||||
|
||||
- Userspace can transmit CEC messages by calling
|
||||
:ref:`ioctl CEC_TRANSMIT <CEC_TRANSMIT>`. This implies that
|
||||
userspace can be a follower as well, since being able to transmit
|
||||
messages is a prerequisite of becoming a follower. If this
|
||||
capability isn't set, then the kernel will handle all CEC
|
||||
transmits and process all CEC messages it receives.
|
||||
|
||||
- .. _`CEC-CAP-PASSTHROUGH`:
|
||||
|
||||
- ``CEC_CAP_PASSTHROUGH``
|
||||
|
||||
- 0x00000008
|
||||
|
||||
- Userspace can use the passthrough mode by calling
|
||||
:ref:`ioctl CEC_S_MODE <CEC_S_MODE>`.
|
||||
|
||||
- .. _`CEC-CAP-RC`:
|
||||
|
||||
- ``CEC_CAP_RC``
|
||||
|
||||
- 0x00000010
|
||||
|
||||
- This adapter supports the remote control protocol.
|
||||
|
||||
- .. _`CEC-CAP-MONITOR-ALL`:
|
||||
|
||||
- ``CEC_CAP_MONITOR_ALL``
|
||||
|
||||
- 0x00000020
|
||||
|
||||
- The CEC hardware can monitor all messages, not just directed and
|
||||
broadcast messages.
|
||||
|
||||
|
||||
|
||||
Return Value
|
||||
============
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,436 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _CEC_ADAP_LOG_ADDRS:
|
||||
.. _CEC_ADAP_G_LOG_ADDRS:
|
||||
.. _CEC_ADAP_S_LOG_ADDRS:
|
||||
|
||||
****************************************************
|
||||
ioctls CEC_ADAP_G_LOG_ADDRS and CEC_ADAP_S_LOG_ADDRS
|
||||
****************************************************
|
||||
|
||||
Name
|
||||
====
|
||||
|
||||
CEC_ADAP_G_LOG_ADDRS, CEC_ADAP_S_LOG_ADDRS - Get or set the logical addresses
|
||||
|
||||
|
||||
Synopsis
|
||||
========
|
||||
|
||||
.. cpp:function:: int ioctl( int fd, int request, struct cec_log_addrs *argp )
|
||||
|
||||
|
||||
Arguments
|
||||
=========
|
||||
|
||||
``fd``
|
||||
File descriptor returned by :ref:`open() <cec-func-open>`.
|
||||
|
||||
``request``
|
||||
CEC_ADAP_G_LOG_ADDRS, CEC_ADAP_S_LOG_ADDRS
|
||||
|
||||
``argp``
|
||||
|
||||
|
||||
Description
|
||||
===========
|
||||
|
||||
.. note:: This documents the proposed CEC API. This API is not yet finalized
|
||||
and is currently only available as a staging kernel module.
|
||||
|
||||
To query the current CEC logical addresses, applications call
|
||||
:ref:`ioctl CEC_ADAP_G_LOG_ADDRS <CEC_ADAP_G_LOG_ADDRS>` with a pointer to a
|
||||
:c:type:`struct cec_log_addrs` where the driver stores the logical addresses.
|
||||
|
||||
To set new logical addresses, applications fill in
|
||||
:c:type:`struct cec_log_addrs` and call :ref:`ioctl CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_ADDRS>`
|
||||
with a pointer to this struct. The :ref:`ioctl CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_ADDRS>`
|
||||
is only available if ``CEC_CAP_LOG_ADDRS`` is set (the ``ENOTTY`` error code is
|
||||
returned otherwise). The :ref:`ioctl CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_ADDRS>`
|
||||
can only be called by a file descriptor in initiator mode (see :ref:`CEC_S_MODE`), if not
|
||||
the ``EBUSY`` error code will be returned.
|
||||
|
||||
To clear existing logical addresses set ``num_log_addrs`` to 0. All other fields
|
||||
will be ignored in that case. The adapter will go to the unconfigured state.
|
||||
|
||||
If the physical address is valid (see :ref:`ioctl CEC_ADAP_S_PHYS_ADDR <CEC_ADAP_S_PHYS_ADDR>`),
|
||||
then this ioctl will block until all requested logical
|
||||
addresses have been claimed. If the file descriptor is in non-blocking mode then it will
|
||||
not wait for the logical addresses to be claimed, instead it just returns 0.
|
||||
|
||||
A :ref:`CEC_EVENT_STATE_CHANGE <CEC-EVENT-STATE-CHANGE>` event is sent when the
|
||||
logical addresses are claimed or cleared.
|
||||
|
||||
Attempting to call :ref:`ioctl CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_ADDRS>` when
|
||||
logical address types are already defined will return with error ``EBUSY``.
|
||||
|
||||
|
||||
.. _cec-log-addrs:
|
||||
|
||||
.. flat-table:: struct cec_log_addrs
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 1 1 16
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- __u8
|
||||
|
||||
- ``log_addr[CEC_MAX_LOG_ADDRS]``
|
||||
|
||||
- The actual logical addresses that were claimed. This is set by the
|
||||
driver. If no logical address could be claimed, then it is set to
|
||||
``CEC_LOG_ADDR_INVALID``. If this adapter is Unregistered, then
|
||||
``log_addr[0]`` is set to 0xf and all others to
|
||||
``CEC_LOG_ADDR_INVALID``.
|
||||
|
||||
- .. row 2
|
||||
|
||||
- __u16
|
||||
|
||||
- ``log_addr_mask``
|
||||
|
||||
- The bitmask of all logical addresses this adapter has claimed. If
|
||||
this adapter is Unregistered then ``log_addr_mask`` sets bit 15
|
||||
and clears all other bits. If this adapter is not configured at
|
||||
all, then ``log_addr_mask`` is set to 0. Set by the driver.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- __u8
|
||||
|
||||
- ``cec_version``
|
||||
|
||||
- The CEC version that this adapter shall use. See
|
||||
:ref:`cec-versions`. Used to implement the
|
||||
``CEC_MSG_CEC_VERSION`` and ``CEC_MSG_REPORT_FEATURES`` messages.
|
||||
Note that :ref:`CEC_OP_CEC_VERSION_1_3A <CEC-OP-CEC-VERSION-1-3A>` is not allowed by the CEC
|
||||
framework.
|
||||
|
||||
- .. row 4
|
||||
|
||||
- __u8
|
||||
|
||||
- ``num_log_addrs``
|
||||
|
||||
- Number of logical addresses to set up. Must be ≤
|
||||
``available_log_addrs`` as returned by
|
||||
:ref:`CEC_ADAP_G_CAPS`. All arrays in
|
||||
this structure are only filled up to index
|
||||
``available_log_addrs``-1. The remaining array elements will be
|
||||
ignored. Note that the CEC 2.0 standard allows for a maximum of 2
|
||||
logical addresses, although some hardware has support for more.
|
||||
``CEC_MAX_LOG_ADDRS`` is 4. The driver will return the actual
|
||||
number of logical addresses it could claim, which may be less than
|
||||
what was requested. If this field is set to 0, then the CEC
|
||||
adapter shall clear all claimed logical addresses and all other
|
||||
fields will be ignored.
|
||||
|
||||
- .. row 5
|
||||
|
||||
- __u32
|
||||
|
||||
- ``vendor_id``
|
||||
|
||||
- The vendor ID is a 24-bit number that identifies the specific
|
||||
vendor or entity. Based on this ID vendor specific commands may be
|
||||
defined. If you do not want a vendor ID then set it to
|
||||
``CEC_VENDOR_ID_NONE``.
|
||||
|
||||
- .. row 6
|
||||
|
||||
- __u32
|
||||
|
||||
- ``flags``
|
||||
|
||||
- Flags. No flags are defined yet, so set this to 0.
|
||||
|
||||
- .. row 7
|
||||
|
||||
- char
|
||||
|
||||
- ``osd_name[15]``
|
||||
|
||||
- The On-Screen Display name as is returned by the
|
||||
``CEC_MSG_SET_OSD_NAME`` message.
|
||||
|
||||
- .. row 8
|
||||
|
||||
- __u8
|
||||
|
||||
- ``primary_device_type[CEC_MAX_LOG_ADDRS]``
|
||||
|
||||
- Primary device type for each logical address. See
|
||||
:ref:`cec-prim-dev-types` for possible types.
|
||||
|
||||
- .. row 9
|
||||
|
||||
- __u8
|
||||
|
||||
- ``log_addr_type[CEC_MAX_LOG_ADDRS]``
|
||||
|
||||
- Logical address types. See :ref:`cec-log-addr-types` for
|
||||
possible types. The driver will update this with the actual
|
||||
logical address type that it claimed (e.g. it may have to fallback
|
||||
to :ref:`CEC_LOG_ADDR_TYPE_UNREGISTERED <CEC-LOG-ADDR-TYPE-UNREGISTERED>`).
|
||||
|
||||
- .. row 10
|
||||
|
||||
- __u8
|
||||
|
||||
- ``all_device_types[CEC_MAX_LOG_ADDRS]``
|
||||
|
||||
- CEC 2.0 specific: the bit mask of all device types. See
|
||||
:ref:`cec-all-dev-types-flags`. It is used in the CEC 2.0
|
||||
``CEC_MSG_REPORT_FEATURES`` message. For CEC 1.4 you can either leave
|
||||
this field to 0, or fill it in according to the CEC 2.0 guidelines to
|
||||
give the CEC framework more information about the device type, even
|
||||
though the framework won't use it directly in the CEC message.
|
||||
|
||||
- .. row 11
|
||||
|
||||
- __u8
|
||||
|
||||
- ``features[CEC_MAX_LOG_ADDRS][12]``
|
||||
|
||||
- Features for each logical address. It is used in the CEC 2.0
|
||||
``CEC_MSG_REPORT_FEATURES`` message. The 12 bytes include both the
|
||||
RC Profile and the Device Features. For CEC 1.4 you can either leave
|
||||
this field to all 0, or fill it in according to the CEC 2.0 guidelines to
|
||||
give the CEC framework more information about the device type, even
|
||||
though the framework won't use it directly in the CEC message.
|
||||
|
||||
.. _cec-versions:
|
||||
|
||||
.. flat-table:: CEC Versions
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 3 1 4
|
||||
|
||||
|
||||
- .. _`CEC-OP-CEC-VERSION-1-3A`:
|
||||
|
||||
- ``CEC_OP_CEC_VERSION_1_3A``
|
||||
|
||||
- 4
|
||||
|
||||
- CEC version according to the HDMI 1.3a standard.
|
||||
|
||||
- .. _`CEC-OP-CEC-VERSION-1-4B`:
|
||||
|
||||
- ``CEC_OP_CEC_VERSION_1_4B``
|
||||
|
||||
- 5
|
||||
|
||||
- CEC version according to the HDMI 1.4b standard.
|
||||
|
||||
- .. _`CEC-OP-CEC-VERSION-2-0`:
|
||||
|
||||
- ``CEC_OP_CEC_VERSION_2_0``
|
||||
|
||||
- 6
|
||||
|
||||
- CEC version according to the HDMI 2.0 standard.
|
||||
|
||||
|
||||
|
||||
.. _cec-prim-dev-types:
|
||||
|
||||
.. flat-table:: CEC Primary Device Types
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 3 1 4
|
||||
|
||||
|
||||
- .. _`CEC-OP-PRIM-DEVTYPE-TV`:
|
||||
|
||||
- ``CEC_OP_PRIM_DEVTYPE_TV``
|
||||
|
||||
- 0
|
||||
|
||||
- Use for a TV.
|
||||
|
||||
- .. _`CEC-OP-PRIM-DEVTYPE-RECORD`:
|
||||
|
||||
- ``CEC_OP_PRIM_DEVTYPE_RECORD``
|
||||
|
||||
- 1
|
||||
|
||||
- Use for a recording device.
|
||||
|
||||
- .. _`CEC-OP-PRIM-DEVTYPE-TUNER`:
|
||||
|
||||
- ``CEC_OP_PRIM_DEVTYPE_TUNER``
|
||||
|
||||
- 3
|
||||
|
||||
- Use for a device with a tuner.
|
||||
|
||||
- .. _`CEC-OP-PRIM-DEVTYPE-PLAYBACK`:
|
||||
|
||||
- ``CEC_OP_PRIM_DEVTYPE_PLAYBACK``
|
||||
|
||||
- 4
|
||||
|
||||
- Use for a playback device.
|
||||
|
||||
- .. _`CEC-OP-PRIM-DEVTYPE-AUDIOSYSTEM`:
|
||||
|
||||
- ``CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM``
|
||||
|
||||
- 5
|
||||
|
||||
- Use for an audio system (e.g. an audio/video receiver).
|
||||
|
||||
- .. _`CEC-OP-PRIM-DEVTYPE-SWITCH`:
|
||||
|
||||
- ``CEC_OP_PRIM_DEVTYPE_SWITCH``
|
||||
|
||||
- 6
|
||||
|
||||
- Use for a CEC switch.
|
||||
|
||||
- .. _`CEC-OP-PRIM-DEVTYPE-VIDEOPROC`:
|
||||
|
||||
- ``CEC_OP_PRIM_DEVTYPE_VIDEOPROC``
|
||||
|
||||
- 7
|
||||
|
||||
- Use for a video processor device.
|
||||
|
||||
|
||||
|
||||
.. _cec-log-addr-types:
|
||||
|
||||
.. flat-table:: CEC Logical Address Types
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 3 1 16
|
||||
|
||||
|
||||
- .. _`CEC-LOG-ADDR-TYPE-TV`:
|
||||
|
||||
- ``CEC_LOG_ADDR_TYPE_TV``
|
||||
|
||||
- 0
|
||||
|
||||
- Use for a TV.
|
||||
|
||||
- .. _`CEC-LOG-ADDR-TYPE-RECORD`:
|
||||
|
||||
- ``CEC_LOG_ADDR_TYPE_RECORD``
|
||||
|
||||
- 1
|
||||
|
||||
- Use for a recording device.
|
||||
|
||||
- .. _`CEC-LOG-ADDR-TYPE-TUNER`:
|
||||
|
||||
- ``CEC_LOG_ADDR_TYPE_TUNER``
|
||||
|
||||
- 2
|
||||
|
||||
- Use for a tuner device.
|
||||
|
||||
- .. _`CEC-LOG-ADDR-TYPE-PLAYBACK`:
|
||||
|
||||
- ``CEC_LOG_ADDR_TYPE_PLAYBACK``
|
||||
|
||||
- 3
|
||||
|
||||
- Use for a playback device.
|
||||
|
||||
- .. _`CEC-LOG-ADDR-TYPE-AUDIOSYSTEM`:
|
||||
|
||||
- ``CEC_LOG_ADDR_TYPE_AUDIOSYSTEM``
|
||||
|
||||
- 4
|
||||
|
||||
- Use for an audio system device.
|
||||
|
||||
- .. _`CEC-LOG-ADDR-TYPE-SPECIFIC`:
|
||||
|
||||
- ``CEC_LOG_ADDR_TYPE_SPECIFIC``
|
||||
|
||||
- 5
|
||||
|
||||
- Use for a second TV or for a video processor device.
|
||||
|
||||
- .. _`CEC-LOG-ADDR-TYPE-UNREGISTERED`:
|
||||
|
||||
- ``CEC_LOG_ADDR_TYPE_UNREGISTERED``
|
||||
|
||||
- 6
|
||||
|
||||
- Use this if you just want to remain unregistered. Used for pure
|
||||
CEC switches or CDC-only devices (CDC: Capability Discovery and
|
||||
Control).
|
||||
|
||||
|
||||
|
||||
.. _cec-all-dev-types-flags:
|
||||
|
||||
.. flat-table:: CEC All Device Types Flags
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 3 1 4
|
||||
|
||||
|
||||
- .. _`CEC-OP-ALL-DEVTYPE-TV`:
|
||||
|
||||
- ``CEC_OP_ALL_DEVTYPE_TV``
|
||||
|
||||
- 0x80
|
||||
|
||||
- This supports the TV type.
|
||||
|
||||
- .. _`CEC-OP-ALL-DEVTYPE-RECORD`:
|
||||
|
||||
- ``CEC_OP_ALL_DEVTYPE_RECORD``
|
||||
|
||||
- 0x40
|
||||
|
||||
- This supports the Recording type.
|
||||
|
||||
- .. _`CEC-OP-ALL-DEVTYPE-TUNER`:
|
||||
|
||||
- ``CEC_OP_ALL_DEVTYPE_TUNER``
|
||||
|
||||
- 0x20
|
||||
|
||||
- This supports the Tuner type.
|
||||
|
||||
- .. _`CEC-OP-ALL-DEVTYPE-PLAYBACK`:
|
||||
|
||||
- ``CEC_OP_ALL_DEVTYPE_PLAYBACK``
|
||||
|
||||
- 0x10
|
||||
|
||||
- This supports the Playback type.
|
||||
|
||||
- .. _`CEC-OP-ALL-DEVTYPE-AUDIOSYSTEM`:
|
||||
|
||||
- ``CEC_OP_ALL_DEVTYPE_AUDIOSYSTEM``
|
||||
|
||||
- 0x08
|
||||
|
||||
- This supports the Audio System type.
|
||||
|
||||
- .. _`CEC-OP-ALL-DEVTYPE-SWITCH`:
|
||||
|
||||
- ``CEC_OP_ALL_DEVTYPE_SWITCH``
|
||||
|
||||
- 0x04
|
||||
|
||||
- This supports the CEC Switch or Video Processing type.
|
||||
|
||||
|
||||
|
||||
Return Value
|
||||
============
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
||||
|
|
@ -0,0 +1,82 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _CEC_ADAP_PHYS_ADDR:
|
||||
.. _CEC_ADAP_G_PHYS_ADDR:
|
||||
.. _CEC_ADAP_S_PHYS_ADDR:
|
||||
|
||||
****************************************************
|
||||
ioctls CEC_ADAP_G_PHYS_ADDR and CEC_ADAP_S_PHYS_ADDR
|
||||
****************************************************
|
||||
|
||||
Name
|
||||
====
|
||||
|
||||
CEC_ADAP_G_PHYS_ADDR, CEC_ADAP_S_PHYS_ADDR - Get or set the physical address
|
||||
|
||||
|
||||
Synopsis
|
||||
========
|
||||
|
||||
.. cpp:function:: int ioctl( int fd, int request, __u16 *argp )
|
||||
|
||||
Arguments
|
||||
=========
|
||||
|
||||
``fd``
|
||||
File descriptor returned by :ref:`open() <cec-func-open>`.
|
||||
|
||||
``request``
|
||||
CEC_ADAP_G_PHYS_ADDR, CEC_ADAP_S_PHYS_ADDR
|
||||
|
||||
``argp``
|
||||
|
||||
|
||||
Description
|
||||
===========
|
||||
|
||||
.. note:: This documents the proposed CEC API. This API is not yet finalized
|
||||
and is currently only available as a staging kernel module.
|
||||
|
||||
To query the current physical address applications call
|
||||
:ref:`ioctl CEC_ADAP_G_PHYS_ADDR <CEC_ADAP_G_PHYS_ADDR>` with a pointer to a __u16 where the
|
||||
driver stores the physical address.
|
||||
|
||||
To set a new physical address applications store the physical address in
|
||||
a __u16 and call :ref:`ioctl CEC_ADAP_S_PHYS_ADDR <CEC_ADAP_S_PHYS_ADDR>` with a pointer to
|
||||
this integer. The :ref:`ioctl CEC_ADAP_S_PHYS_ADDR <CEC_ADAP_S_PHYS_ADDR>` is only available if
|
||||
``CEC_CAP_PHYS_ADDR`` is set (the ``ENOTTY`` error code will be returned
|
||||
otherwise). The :ref:`ioctl CEC_ADAP_S_PHYS_ADDR <CEC_ADAP_S_PHYS_ADDR>` can only be called
|
||||
by a file descriptor in initiator mode (see :ref:`CEC_S_MODE`), if not
|
||||
the ``EBUSY`` error code will be returned.
|
||||
|
||||
To clear an existing physical address use ``CEC_PHYS_ADDR_INVALID``.
|
||||
The adapter will go to the unconfigured state.
|
||||
|
||||
If logical address types have been defined (see :ref:`ioctl CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_ADDRS>`),
|
||||
then this ioctl will block until all
|
||||
requested logical addresses have been claimed. If the file descriptor is in non-blocking mode
|
||||
then it will not wait for the logical addresses to be claimed, instead it just returns 0.
|
||||
|
||||
A :ref:`CEC_EVENT_STATE_CHANGE <CEC-EVENT-STATE-CHANGE>` event is sent when the physical address
|
||||
changes.
|
||||
|
||||
The physical address is a 16-bit number where each group of 4 bits
|
||||
represent a digit of the physical address a.b.c.d where the most
|
||||
significant 4 bits represent 'a'. The CEC root device (usually the TV)
|
||||
has address 0.0.0.0. Every device that is hooked up to an input of the
|
||||
TV has address a.0.0.0 (where 'a' is ≥ 1), devices hooked up to those in
|
||||
turn have addresses a.b.0.0, etc. So a topology of up to 5 devices deep
|
||||
is supported. The physical address a device shall use is stored in the
|
||||
EDID of the sink.
|
||||
|
||||
For example, the EDID for each HDMI input of the TV will have a
|
||||
different physical address of the form a.0.0.0 that the sources will
|
||||
read out and use as their physical address.
|
||||
|
||||
|
||||
Return Value
|
||||
============
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,231 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _CEC_DQEVENT:
|
||||
|
||||
*****************
|
||||
ioctl CEC_DQEVENT
|
||||
*****************
|
||||
|
||||
Name
|
||||
====
|
||||
|
||||
CEC_DQEVENT - Dequeue a CEC event
|
||||
|
||||
|
||||
Synopsis
|
||||
========
|
||||
|
||||
.. cpp:function:: int ioctl( int fd, int request, struct cec_event *argp )
|
||||
|
||||
Arguments
|
||||
=========
|
||||
|
||||
``fd``
|
||||
File descriptor returned by :ref:`open() <cec-func-open>`.
|
||||
|
||||
``request``
|
||||
CEC_DQEVENT
|
||||
|
||||
``argp``
|
||||
|
||||
|
||||
Description
|
||||
===========
|
||||
|
||||
.. note:: This documents the proposed CEC API. This API is not yet finalized
|
||||
and is currently only available as a staging kernel module.
|
||||
|
||||
CEC devices can send asynchronous events. These can be retrieved by
|
||||
calling :ref:`ioctl CEC_DQEVENT <CEC_DQEVENT>`. If the file descriptor is in
|
||||
non-blocking mode and no event is pending, then it will return -1 and
|
||||
set errno to the ``EAGAIN`` error code.
|
||||
|
||||
The internal event queues are per-filehandle and per-event type. If
|
||||
there is no more room in a queue then the last event is overwritten with
|
||||
the new one. This means that intermediate results can be thrown away but
|
||||
that the latest event is always available. This also means that is it
|
||||
possible to read two successive events that have the same value (e.g.
|
||||
two :ref:`CEC_EVENT_STATE_CHANGE <CEC-EVENT-STATE-CHANGE>` events with
|
||||
the same state). In that case the intermediate state changes were lost but
|
||||
it is guaranteed that the state did change in between the two events.
|
||||
|
||||
|
||||
.. _cec-event-state-change_s:
|
||||
|
||||
.. flat-table:: struct cec_event_state_change
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 1 1 8
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- __u16
|
||||
|
||||
- ``phys_addr``
|
||||
|
||||
- The current physical address.
|
||||
|
||||
- .. row 2
|
||||
|
||||
- __u16
|
||||
|
||||
- ``log_addr_mask``
|
||||
|
||||
- The current set of claimed logical addresses.
|
||||
|
||||
|
||||
|
||||
.. _cec-event-lost-msgs_s:
|
||||
|
||||
.. flat-table:: struct cec_event_lost_msgs
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 1 1 16
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- __u32
|
||||
|
||||
- ``lost_msgs``
|
||||
|
||||
- Set to the number of lost messages since the filehandle was opened
|
||||
or since the last time this event was dequeued for this
|
||||
filehandle. The messages lost are the oldest messages. So when a
|
||||
new message arrives and there is no more room, then the oldest
|
||||
message is discarded to make room for the new one. The internal
|
||||
size of the message queue guarantees that all messages received in
|
||||
the last two seconds will be stored. Since messages should be
|
||||
replied to within a second according to the CEC specification,
|
||||
this is more than enough.
|
||||
|
||||
|
||||
|
||||
.. _cec-event:
|
||||
|
||||
.. flat-table:: struct cec_event
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 1 1 1 8
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- __u64
|
||||
|
||||
- ``ts``
|
||||
|
||||
- Timestamp of the event in ns.
|
||||
The timestamp has been taken from the ``CLOCK_MONOTONIC`` clock. To access
|
||||
the same clock from userspace use :c:func:`clock_gettime(2)`.
|
||||
|
||||
-
|
||||
|
||||
- .. row 2
|
||||
|
||||
- __u32
|
||||
|
||||
- ``event``
|
||||
|
||||
- The CEC event type, see :ref:`cec-events`.
|
||||
|
||||
-
|
||||
|
||||
- .. row 3
|
||||
|
||||
- __u32
|
||||
|
||||
- ``flags``
|
||||
|
||||
- Event flags, see :ref:`cec-event-flags`.
|
||||
|
||||
-
|
||||
|
||||
- .. row 4
|
||||
|
||||
- union
|
||||
|
||||
- (anonymous)
|
||||
|
||||
-
|
||||
-
|
||||
|
||||
- .. row 5
|
||||
|
||||
-
|
||||
- struct cec_event_state_change
|
||||
|
||||
- ``state_change``
|
||||
|
||||
- The new adapter state as sent by the :ref:`CEC_EVENT_STATE_CHANGE <CEC-EVENT-STATE-CHANGE>`
|
||||
event.
|
||||
|
||||
- .. row 6
|
||||
|
||||
-
|
||||
- struct cec_event_lost_msgs
|
||||
|
||||
- ``lost_msgs``
|
||||
|
||||
- The number of lost messages as sent by the :ref:`CEC_EVENT_LOST_MSGS <CEC-EVENT-LOST-MSGS>`
|
||||
event.
|
||||
|
||||
|
||||
|
||||
.. _cec-events:
|
||||
|
||||
.. flat-table:: CEC Events Types
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 3 1 16
|
||||
|
||||
|
||||
- .. _`CEC-EVENT-STATE-CHANGE`:
|
||||
|
||||
- ``CEC_EVENT_STATE_CHANGE``
|
||||
|
||||
- 1
|
||||
|
||||
- Generated when the CEC Adapter's state changes. When open() is
|
||||
called an initial event will be generated for that filehandle with
|
||||
the CEC Adapter's state at that time.
|
||||
|
||||
- .. _`CEC-EVENT-LOST-MSGS`:
|
||||
|
||||
- ``CEC_EVENT_LOST_MSGS``
|
||||
|
||||
- 2
|
||||
|
||||
- Generated if one or more CEC messages were lost because the
|
||||
application didn't dequeue CEC messages fast enough.
|
||||
|
||||
|
||||
|
||||
.. _cec-event-flags:
|
||||
|
||||
.. flat-table:: CEC Event Flags
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 3 1 8
|
||||
|
||||
|
||||
- .. _`CEC-EVENT-FL-INITIAL-VALUE`:
|
||||
|
||||
- ``CEC_EVENT_FL_INITIAL_VALUE``
|
||||
|
||||
- 1
|
||||
|
||||
- Set for the initial events that are generated when the device is
|
||||
opened. See the table above for which events do this. This allows
|
||||
applications to learn the initial state of the CEC adapter at
|
||||
open() time.
|
||||
|
||||
|
||||
|
||||
Return Value
|
||||
============
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,295 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _CEC_MODE:
|
||||
.. _CEC_G_MODE:
|
||||
.. _CEC_S_MODE:
|
||||
|
||||
********************************
|
||||
ioctls CEC_G_MODE and CEC_S_MODE
|
||||
********************************
|
||||
|
||||
CEC_G_MODE, CEC_S_MODE - Get or set exclusive use of the CEC adapter
|
||||
|
||||
Synopsis
|
||||
========
|
||||
|
||||
.. cpp:function:: int ioctl( int fd, int request, __u32 *argp )
|
||||
|
||||
Arguments
|
||||
=========
|
||||
|
||||
``fd``
|
||||
File descriptor returned by :ref:`open() <cec-func-open>`.
|
||||
|
||||
``request``
|
||||
CEC_G_MODE, CEC_S_MODE
|
||||
|
||||
``argp``
|
||||
|
||||
|
||||
Description
|
||||
===========
|
||||
|
||||
.. note:: This documents the proposed CEC API. This API is not yet finalized
|
||||
and is currently only available as a staging kernel module.
|
||||
|
||||
By default any filehandle can use :ref:`CEC_TRANSMIT`, but in order to prevent
|
||||
applications from stepping on each others toes it must be possible to
|
||||
obtain exclusive access to the CEC adapter. This ioctl sets the
|
||||
filehandle to initiator and/or follower mode which can be exclusive
|
||||
depending on the chosen mode. The initiator is the filehandle that is
|
||||
used to initiate messages, i.e. it commands other CEC devices. The
|
||||
follower is the filehandle that receives messages sent to the CEC
|
||||
adapter and processes them. The same filehandle can be both initiator
|
||||
and follower, or this role can be taken by two different filehandles.
|
||||
|
||||
When a CEC message is received, then the CEC framework will decide how
|
||||
it will be processed. If the message is a reply to an earlier
|
||||
transmitted message, then the reply is sent back to the filehandle that
|
||||
is waiting for it. In addition the CEC framework will process it.
|
||||
|
||||
If the message is not a reply, then the CEC framework will process it
|
||||
first. If there is no follower, then the message is just discarded and a
|
||||
feature abort is sent back to the initiator if the framework couldn't
|
||||
process it. If there is a follower, then the message is passed on to the
|
||||
follower who will use :ref:`ioctl CEC_RECEIVE <CEC_RECEIVE>` to dequeue
|
||||
the new message. The framework expects the follower to make the right
|
||||
decisions.
|
||||
|
||||
The CEC framework will process core messages unless requested otherwise
|
||||
by the follower. The follower can enable the passthrough mode. In that
|
||||
case, the CEC framework will pass on most core messages without
|
||||
processing them and the follower will have to implement those messages.
|
||||
There are some messages that the core will always process, regardless of
|
||||
the passthrough mode. See :ref:`cec-core-processing` for details.
|
||||
|
||||
If there is no initiator, then any CEC filehandle can use
|
||||
:ref:`ioctl CEC_TRANSMIT <CEC_TRANSMIT>`. If there is an exclusive
|
||||
initiator then only that initiator can call
|
||||
:ref:`CEC_TRANSMIT`. The follower can of course
|
||||
always call :ref:`ioctl CEC_TRANSMIT <CEC_TRANSMIT>`.
|
||||
|
||||
Available initiator modes are:
|
||||
|
||||
|
||||
.. _cec-mode-initiator_e:
|
||||
|
||||
.. flat-table:: Initiator Modes
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 3 1 16
|
||||
|
||||
|
||||
- .. _`CEC-MODE-NO-INITIATOR`:
|
||||
|
||||
- ``CEC_MODE_NO_INITIATOR``
|
||||
|
||||
- 0x0
|
||||
|
||||
- This is not an initiator, i.e. it cannot transmit CEC messages or
|
||||
make any other changes to the CEC adapter.
|
||||
|
||||
- .. _`CEC-MODE-INITIATOR`:
|
||||
|
||||
- ``CEC_MODE_INITIATOR``
|
||||
|
||||
- 0x1
|
||||
|
||||
- This is an initiator (the default when the device is opened) and
|
||||
it can transmit CEC messages and make changes to the CEC adapter,
|
||||
unless there is an exclusive initiator.
|
||||
|
||||
- .. _`CEC-MODE-EXCL-INITIATOR`:
|
||||
|
||||
- ``CEC_MODE_EXCL_INITIATOR``
|
||||
|
||||
- 0x2
|
||||
|
||||
- This is an exclusive initiator and this file descriptor is the
|
||||
only one that can transmit CEC messages and make changes to the
|
||||
CEC adapter. If someone else is already the exclusive initiator
|
||||
then an attempt to become one will return the ``EBUSY`` error code
|
||||
error.
|
||||
|
||||
|
||||
Available follower modes are:
|
||||
|
||||
|
||||
.. _cec-mode-follower_e:
|
||||
|
||||
.. flat-table:: Follower Modes
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 3 1 16
|
||||
|
||||
|
||||
- .. _`CEC-MODE-NO-FOLLOWER`:
|
||||
|
||||
- ``CEC_MODE_NO_FOLLOWER``
|
||||
|
||||
- 0x00
|
||||
|
||||
- This is not a follower (the default when the device is opened).
|
||||
|
||||
- .. _`CEC-MODE-FOLLOWER`:
|
||||
|
||||
- ``CEC_MODE_FOLLOWER``
|
||||
|
||||
- 0x10
|
||||
|
||||
- This is a follower and it will receive CEC messages unless there
|
||||
is an exclusive follower. You cannot become a follower if
|
||||
:ref:`CEC_CAP_TRANSMIT <CEC-CAP-TRANSMIT>` is not set or if :ref:`CEC_MODE_NO_INITIATOR <CEC-MODE-NO-INITIATOR>`
|
||||
was specified, the ``EINVAL`` error code is returned in that case.
|
||||
|
||||
- .. _`CEC-MODE-EXCL-FOLLOWER`:
|
||||
|
||||
- ``CEC_MODE_EXCL_FOLLOWER``
|
||||
|
||||
- 0x20
|
||||
|
||||
- This is an exclusive follower and only this file descriptor will
|
||||
receive CEC messages for processing. If someone else is already
|
||||
the exclusive follower then an attempt to become one will return
|
||||
the ``EBUSY`` error code. You cannot become a follower if
|
||||
:ref:`CEC_CAP_TRANSMIT <CEC-CAP-TRANSMIT>` is not set or if :ref:`CEC_MODE_NO_INITIATOR <CEC-MODE-NO-INITIATOR>`
|
||||
was specified, the ``EINVAL`` error code is returned in that case.
|
||||
|
||||
- .. _`CEC-MODE-EXCL-FOLLOWER-PASSTHRU`:
|
||||
|
||||
- ``CEC_MODE_EXCL_FOLLOWER_PASSTHRU``
|
||||
|
||||
- 0x30
|
||||
|
||||
- This is an exclusive follower and only this file descriptor will
|
||||
receive CEC messages for processing. In addition it will put the
|
||||
CEC device into passthrough mode, allowing the exclusive follower
|
||||
to handle most core messages instead of relying on the CEC
|
||||
framework for that. If someone else is already the exclusive
|
||||
follower then an attempt to become one will return the ``EBUSY`` error
|
||||
code. You cannot become a follower if :ref:`CEC_CAP_TRANSMIT <CEC-CAP-TRANSMIT>`
|
||||
is not set or if :ref:`CEC_MODE_NO_INITIATOR <CEC-MODE-NO-INITIATOR>` was specified,
|
||||
the ``EINVAL`` error code is returned in that case.
|
||||
|
||||
- .. _`CEC-MODE-MONITOR`:
|
||||
|
||||
- ``CEC_MODE_MONITOR``
|
||||
|
||||
- 0xe0
|
||||
|
||||
- Put the file descriptor into monitor mode. Can only be used in
|
||||
combination with :ref:`CEC_MODE_NO_INITIATOR <CEC-MODE-NO-INITIATOR>`, otherwise EINVAL error
|
||||
code will be returned. In monitor mode all messages this CEC
|
||||
device transmits and all messages it receives (both broadcast
|
||||
messages and directed messages for one its logical addresses) will
|
||||
be reported. This is very useful for debugging. This is only
|
||||
allowed if the process has the ``CAP_NET_ADMIN`` capability. If
|
||||
that is not set, then the ``EPERM`` error code is returned.
|
||||
|
||||
- .. _`CEC-MODE-MONITOR-ALL`:
|
||||
|
||||
- ``CEC_MODE_MONITOR_ALL``
|
||||
|
||||
- 0xf0
|
||||
|
||||
- Put the file descriptor into 'monitor all' mode. Can only be used
|
||||
in combination with :ref:`CEC_MODE_NO_INITIATOR <CEC-MODE-NO-INITIATOR>`, otherwise
|
||||
the ``EINVAL`` error code will be returned. In 'monitor all' mode all messages
|
||||
this CEC device transmits and all messages it receives, including
|
||||
directed messages for other CEC devices will be reported. This is
|
||||
very useful for debugging, but not all devices support this. This
|
||||
mode requires that the :ref:`CEC_CAP_MONITOR_ALL <CEC-CAP-MONITOR-ALL>` capability is set,
|
||||
otherwise the ``EINVAL`` error code is returned. This is only allowed if
|
||||
the process has the ``CAP_NET_ADMIN`` capability. If that is not
|
||||
set, then the ``EPERM`` error code is returned.
|
||||
|
||||
|
||||
Core message processing details:
|
||||
|
||||
|
||||
.. _cec-core-processing:
|
||||
|
||||
.. flat-table:: Core Message Processing
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 1 8
|
||||
|
||||
|
||||
- .. _`CEC-MSG-GET-CEC-VERSION`:
|
||||
|
||||
- ``CEC_MSG_GET_CEC_VERSION``
|
||||
|
||||
- When in passthrough mode this message has to be handled by
|
||||
userspace, otherwise the core will return the CEC version that was
|
||||
set with :ref:`ioctl CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_ADDRS>`.
|
||||
|
||||
- .. _`CEC-MSG-GIVE-DEVICE-VENDOR-ID`:
|
||||
|
||||
- ``CEC_MSG_GIVE_DEVICE_VENDOR_ID``
|
||||
|
||||
- When in passthrough mode this message has to be handled by
|
||||
userspace, otherwise the core will return the vendor ID that was
|
||||
set with :ref:`ioctl CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_ADDRS>`.
|
||||
|
||||
- .. _`CEC-MSG-ABORT`:
|
||||
|
||||
- ``CEC_MSG_ABORT``
|
||||
|
||||
- When in passthrough mode this message has to be handled by
|
||||
userspace, otherwise the core will return a feature refused
|
||||
message as per the specification.
|
||||
|
||||
- .. _`CEC-MSG-GIVE-PHYSICAL-ADDR`:
|
||||
|
||||
- ``CEC_MSG_GIVE_PHYSICAL_ADDR``
|
||||
|
||||
- When in passthrough mode this message has to be handled by
|
||||
userspace, otherwise the core will report the current physical
|
||||
address.
|
||||
|
||||
- .. _`CEC-MSG-GIVE-OSD-NAME`:
|
||||
|
||||
- ``CEC_MSG_GIVE_OSD_NAME``
|
||||
|
||||
- When in passthrough mode this message has to be handled by
|
||||
userspace, otherwise the core will report the current OSD name as
|
||||
was set with :ref:`ioctl CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_ADDRS>`.
|
||||
|
||||
- .. _`CEC-MSG-GIVE-FEATURES`:
|
||||
|
||||
- ``CEC_MSG_GIVE_FEATURES``
|
||||
|
||||
- When in passthrough mode this message has to be handled by
|
||||
userspace, otherwise the core will report the current features as
|
||||
was set with :ref:`ioctl CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_ADDRS>`
|
||||
or the message is ignored if the CEC version was older than 2.0.
|
||||
|
||||
- .. _`CEC-MSG-USER-CONTROL-PRESSED`:
|
||||
|
||||
- ``CEC_MSG_USER_CONTROL_PRESSED``
|
||||
|
||||
- If :ref:`CEC_CAP_RC <CEC-CAP-RC>` is set, then generate a remote control key
|
||||
press. This message is always passed on to userspace.
|
||||
|
||||
- .. _`CEC-MSG-USER-CONTROL-RELEASED`:
|
||||
|
||||
- ``CEC_MSG_USER_CONTROL_RELEASED``
|
||||
|
||||
- If :ref:`CEC_CAP_RC <CEC-CAP-RC>` is set, then generate a remote control key
|
||||
release. This message is always passed on to userspace.
|
||||
|
||||
- .. _`CEC-MSG-REPORT-PHYSICAL-ADDR`:
|
||||
|
||||
- ``CEC_MSG_REPORT_PHYSICAL_ADDR``
|
||||
|
||||
- The CEC framework will make note of the reported physical address
|
||||
and then just pass the message on to userspace.
|
||||
|
||||
|
||||
|
||||
Return Value
|
||||
============
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,360 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _CEC_TRANSMIT:
|
||||
.. _CEC_RECEIVE:
|
||||
|
||||
***********************************
|
||||
ioctls CEC_RECEIVE and CEC_TRANSMIT
|
||||
***********************************
|
||||
|
||||
Name
|
||||
====
|
||||
|
||||
CEC_RECEIVE, CEC_TRANSMIT - Receive or transmit a CEC message
|
||||
|
||||
|
||||
Synopsis
|
||||
========
|
||||
|
||||
.. cpp:function:: int ioctl( int fd, int request, struct cec_msg *argp )
|
||||
|
||||
Arguments
|
||||
=========
|
||||
|
||||
``fd``
|
||||
File descriptor returned by :ref:`open() <cec-func-open>`.
|
||||
|
||||
``request``
|
||||
CEC_RECEIVE, CEC_TRANSMIT
|
||||
|
||||
``argp``
|
||||
|
||||
|
||||
Description
|
||||
===========
|
||||
|
||||
.. note:: This documents the proposed CEC API. This API is not yet finalized
|
||||
and is currently only available as a staging kernel module.
|
||||
|
||||
To receive a CEC message the application has to fill in the
|
||||
``timeout`` field of :c:type:`struct cec_msg` and pass it to :ref:`ioctl CEC_RECEIVE <CEC_RECEIVE>`.
|
||||
If the file descriptor is in non-blocking mode and there are no received
|
||||
messages pending, then it will return -1 and set errno to the ``EAGAIN``
|
||||
error code. If the file descriptor is in blocking mode and ``timeout``
|
||||
is non-zero and no message arrived within ``timeout`` milliseconds, then
|
||||
it will return -1 and set errno to the ``ETIMEDOUT`` error code.
|
||||
|
||||
A received message can be:
|
||||
|
||||
1. a message received from another CEC device (the ``sequence`` field will
|
||||
be 0).
|
||||
2. the result of an earlier non-blocking transmit (the ``sequence`` field will
|
||||
be non-zero).
|
||||
|
||||
To send a CEC message the application has to fill in the
|
||||
:c:type:`struct cec_msg` and pass it to
|
||||
:ref:`ioctl CEC_TRANSMIT <CEC_TRANSMIT>`. The :ref:`ioctl CEC_TRANSMIT <CEC_TRANSMIT>` is only available if
|
||||
``CEC_CAP_TRANSMIT`` is set. If there is no more room in the transmit
|
||||
queue, then it will return -1 and set errno to the ``EBUSY`` error code.
|
||||
The transmit queue has enough room for 18 messages (about 1 second worth
|
||||
of 2-byte messages). Note that the CEC kernel framework will also reply
|
||||
to core messages (see :ref:cec-core-processing), so it is not a good
|
||||
idea to fully fill up the transmit queue.
|
||||
|
||||
If the file descriptor is in non-blocking mode then the transmit will
|
||||
return 0 and the result of the transmit will be available via
|
||||
:ref:`ioctl CEC_RECEIVE <CEC_RECEIVE>` once the transmit has finished
|
||||
(including waiting for a reply, if requested).
|
||||
|
||||
The ``sequence`` field is filled in for every transmit and this can be
|
||||
checked against the received messages to find the corresponding transmit
|
||||
result.
|
||||
|
||||
|
||||
.. _cec-msg:
|
||||
|
||||
.. flat-table:: struct cec_msg
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 1 1 16
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- __u64
|
||||
|
||||
- ``tx_ts``
|
||||
|
||||
- Timestamp in ns of when the last byte of the message was transmitted.
|
||||
The timestamp has been taken from the ``CLOCK_MONOTONIC`` clock. To access
|
||||
the same clock from userspace use :c:func:`clock_gettime(2)`.
|
||||
|
||||
- .. row 2
|
||||
|
||||
- __u64
|
||||
|
||||
- ``rx_ts``
|
||||
|
||||
- Timestamp in ns of when the last byte of the message was received.
|
||||
The timestamp has been taken from the ``CLOCK_MONOTONIC`` clock. To access
|
||||
the same clock from userspace use :c:func:`clock_gettime(2)`.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- __u32
|
||||
|
||||
- ``len``
|
||||
|
||||
- The length of the message. For :ref:`ioctl CEC_TRANSMIT <CEC_TRANSMIT>` this is filled in
|
||||
by the application. The driver will fill this in for
|
||||
:ref:`ioctl CEC_RECEIVE <CEC_RECEIVE>`. For :ref:`ioctl CEC_TRANSMIT <CEC_TRANSMIT>` it will be
|
||||
filled in by the driver with the length of the reply message if ``reply`` was set.
|
||||
|
||||
- .. row 4
|
||||
|
||||
- __u32
|
||||
|
||||
- ``timeout``
|
||||
|
||||
- The timeout in milliseconds. This is the time the device will wait
|
||||
for a message to be received before timing out. If it is set to 0,
|
||||
then it will wait indefinitely when it is called by :ref:`ioctl CEC_RECEIVE <CEC_RECEIVE>`.
|
||||
If it is 0 and it is called by :ref:`ioctl CEC_TRANSMIT <CEC_TRANSMIT>`,
|
||||
then it will be replaced by 1000 if the ``reply`` is non-zero or
|
||||
ignored if ``reply`` is 0.
|
||||
|
||||
- .. row 5
|
||||
|
||||
- __u32
|
||||
|
||||
- ``sequence``
|
||||
|
||||
- A non-zero sequence number is automatically assigned by the CEC framework
|
||||
for all transmitted messages. It is used by the CEC framework when it queues
|
||||
the transmit result (when transmit was called in non-blocking mode). This
|
||||
allows the application to associate the received message with the original
|
||||
transmit.
|
||||
|
||||
- .. row 6
|
||||
|
||||
- __u32
|
||||
|
||||
- ``flags``
|
||||
|
||||
- Flags. No flags are defined yet, so set this to 0.
|
||||
|
||||
- .. row 7
|
||||
|
||||
- __u8
|
||||
|
||||
- ``tx_status``
|
||||
|
||||
- The status bits of the transmitted message. See
|
||||
:ref:`cec-tx-status` for the possible status values. It is 0 if
|
||||
this messages was received, not transmitted.
|
||||
|
||||
- .. row 8
|
||||
|
||||
- __u8
|
||||
|
||||
- ``msg[16]``
|
||||
|
||||
- The message payload. For :ref:`ioctl CEC_TRANSMIT <CEC_TRANSMIT>` this is filled in by the
|
||||
application. The driver will fill this in for :ref:`ioctl CEC_RECEIVE <CEC_RECEIVE>`.
|
||||
For :ref:`ioctl CEC_TRANSMIT <CEC_TRANSMIT>` it will be filled in by the driver with
|
||||
the payload of the reply message if ``timeout`` was set.
|
||||
|
||||
- .. row 8
|
||||
|
||||
- __u8
|
||||
|
||||
- ``reply``
|
||||
|
||||
- Wait until this message is replied. If ``reply`` is 0 and the
|
||||
``timeout`` is 0, then don't wait for a reply but return after
|
||||
transmitting the message. Ignored by :ref:`ioctl CEC_RECEIVE <CEC_RECEIVE>`.
|
||||
The case where ``reply`` is 0 (this is the opcode for the Feature Abort
|
||||
message) and ``timeout`` is non-zero is specifically allowed to make it
|
||||
possible to send a message and wait up to ``timeout`` milliseconds for a
|
||||
Feature Abort reply. In this case ``rx_status`` will either be set
|
||||
to :ref:`CEC_RX_STATUS_TIMEOUT <CEC-RX-STATUS-TIMEOUT>` or
|
||||
:ref:`CEC_RX_STATUS_FEATURE_ABORT <CEC-RX-STATUS-FEATURE-ABORT>`.
|
||||
|
||||
- .. row 9
|
||||
|
||||
- __u8
|
||||
|
||||
- ``rx_status``
|
||||
|
||||
- The status bits of the received message. See
|
||||
:ref:`cec-rx-status` for the possible status values. It is 0 if
|
||||
this message was transmitted, not received, unless this is the
|
||||
reply to a transmitted message. In that case both ``rx_status``
|
||||
and ``tx_status`` are set.
|
||||
|
||||
- .. row 10
|
||||
|
||||
- __u8
|
||||
|
||||
- ``tx_status``
|
||||
|
||||
- The status bits of the transmitted message. See
|
||||
:ref:`cec-tx-status` for the possible status values. It is 0 if
|
||||
this messages was received, not transmitted.
|
||||
|
||||
- .. row 11
|
||||
|
||||
- __u8
|
||||
|
||||
- ``tx_arb_lost_cnt``
|
||||
|
||||
- A counter of the number of transmit attempts that resulted in the
|
||||
Arbitration Lost error. This is only set if the hardware supports
|
||||
this, otherwise it is always 0. This counter is only valid if the
|
||||
:ref:`CEC_TX_STATUS_ARB_LOST <CEC-TX-STATUS-ARB-LOST>` status bit is set.
|
||||
|
||||
- .. row 12
|
||||
|
||||
- __u8
|
||||
|
||||
- ``tx_nack_cnt``
|
||||
|
||||
- A counter of the number of transmit attempts that resulted in the
|
||||
Not Acknowledged error. This is only set if the hardware supports
|
||||
this, otherwise it is always 0. This counter is only valid if the
|
||||
:ref:`CEC_TX_STATUS_NACK <CEC-TX-STATUS-NACK>` status bit is set.
|
||||
|
||||
- .. row 13
|
||||
|
||||
- __u8
|
||||
|
||||
- ``tx_low_drive_cnt``
|
||||
|
||||
- A counter of the number of transmit attempts that resulted in the
|
||||
Arbitration Lost error. This is only set if the hardware supports
|
||||
this, otherwise it is always 0. This counter is only valid if the
|
||||
:ref:`CEC_TX_STATUS_LOW_DRIVE <CEC-TX-STATUS-LOW-DRIVE>` status bit is set.
|
||||
|
||||
- .. row 14
|
||||
|
||||
- __u8
|
||||
|
||||
- ``tx_error_cnt``
|
||||
|
||||
- A counter of the number of transmit errors other than Arbitration
|
||||
Lost or Not Acknowledged. This is only set if the hardware
|
||||
supports this, otherwise it is always 0. This counter is only
|
||||
valid if the :ref:`CEC_TX_STATUS_ERROR <CEC-TX-STATUS-ERROR>` status bit is set.
|
||||
|
||||
|
||||
|
||||
.. _cec-tx-status:
|
||||
|
||||
.. flat-table:: CEC Transmit Status
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 3 1 16
|
||||
|
||||
|
||||
- .. _`CEC-TX-STATUS-OK`:
|
||||
|
||||
- ``CEC_TX_STATUS_OK``
|
||||
|
||||
- 0x01
|
||||
|
||||
- The message was transmitted successfully. This is mutually
|
||||
exclusive with :ref:`CEC_TX_STATUS_MAX_RETRIES <CEC-TX-STATUS-MAX-RETRIES>`. Other bits can still
|
||||
be set if earlier attempts met with failure before the transmit
|
||||
was eventually successful.
|
||||
|
||||
- .. _`CEC-TX-STATUS-ARB-LOST`:
|
||||
|
||||
- ``CEC_TX_STATUS_ARB_LOST``
|
||||
|
||||
- 0x02
|
||||
|
||||
- CEC line arbitration was lost.
|
||||
|
||||
- .. _`CEC-TX-STATUS-NACK`:
|
||||
|
||||
- ``CEC_TX_STATUS_NACK``
|
||||
|
||||
- 0x04
|
||||
|
||||
- Message was not acknowledged.
|
||||
|
||||
- .. _`CEC-TX-STATUS-LOW-DRIVE`:
|
||||
|
||||
- ``CEC_TX_STATUS_LOW_DRIVE``
|
||||
|
||||
- 0x08
|
||||
|
||||
- Low drive was detected on the CEC bus. This indicates that a
|
||||
follower detected an error on the bus and requests a
|
||||
retransmission.
|
||||
|
||||
- .. _`CEC-TX-STATUS-ERROR`:
|
||||
|
||||
- ``CEC_TX_STATUS_ERROR``
|
||||
|
||||
- 0x10
|
||||
|
||||
- Some error occurred. This is used for any errors that do not fit
|
||||
the previous two, either because the hardware could not tell which
|
||||
error occurred, or because the hardware tested for other
|
||||
conditions besides those two.
|
||||
|
||||
- .. _`CEC-TX-STATUS-MAX-RETRIES`:
|
||||
|
||||
- ``CEC_TX_STATUS_MAX_RETRIES``
|
||||
|
||||
- 0x20
|
||||
|
||||
- The transmit failed after one or more retries. This status bit is
|
||||
mutually exclusive with :ref:`CEC_TX_STATUS_OK <CEC-TX-STATUS-OK>`. Other bits can still
|
||||
be set to explain which failures were seen.
|
||||
|
||||
|
||||
|
||||
.. _cec-rx-status:
|
||||
|
||||
.. flat-table:: CEC Receive Status
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
:widths: 3 1 16
|
||||
|
||||
|
||||
- .. _`CEC-RX-STATUS-OK`:
|
||||
|
||||
- ``CEC_RX_STATUS_OK``
|
||||
|
||||
- 0x01
|
||||
|
||||
- The message was received successfully.
|
||||
|
||||
- .. _`CEC-RX-STATUS-TIMEOUT`:
|
||||
|
||||
- ``CEC_RX_STATUS_TIMEOUT``
|
||||
|
||||
- 0x02
|
||||
|
||||
- The reply to an earlier transmitted message timed out.
|
||||
|
||||
- .. _`CEC-RX-STATUS-FEATURE-ABORT`:
|
||||
|
||||
- ``CEC_RX_STATUS_FEATURE_ABORT``
|
||||
|
||||
- 0x04
|
||||
|
||||
- The message was received successfully but the reply was
|
||||
``CEC_MSG_FEATURE_ABORT``. This status is only set if this message
|
||||
was the reply to an earlier transmitted message.
|
||||
|
||||
|
||||
|
||||
Return Value
|
||||
============
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,64 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_BILINGUAL_CHANNEL_SELECT:
|
||||
|
||||
==============================
|
||||
AUDIO_BILINGUAL_CHANNEL_SELECT
|
||||
==============================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_BILINGUAL_CHANNEL_SELECT
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_BILINGUAL_CHANNEL_SELECT, audio_channel_select_t)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_BILINGUAL_CHANNEL_SELECT for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- audio_channel_select_t ch
|
||||
|
||||
- Select the output format of the audio (mono left/right, stereo).
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl is obsolete. Do not use in new drivers. It has been replaced
|
||||
by the V4L2 ``V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK`` control
|
||||
for MPEG decoders controlled through V4L2.
|
||||
|
||||
This ioctl call asks the Audio Device to select the requested channel
|
||||
for bilingual streams if possible.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,63 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_CHANNEL_SELECT:
|
||||
|
||||
====================
|
||||
AUDIO_CHANNEL_SELECT
|
||||
====================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_CHANNEL_SELECT
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_CHANNEL_SELECT, audio_channel_select_t)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_CHANNEL_SELECT for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- audio_channel_select_t ch
|
||||
|
||||
- Select the output format of the audio (mono left/right, stereo).
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl is for DVB devices only. To control a V4L2 decoder use the
|
||||
V4L2 ``V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK`` control instead.
|
||||
|
||||
This ioctl call asks the Audio Device to select the requested channel if
|
||||
possible.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,54 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_CLEAR_BUFFER:
|
||||
|
||||
==================
|
||||
AUDIO_CLEAR_BUFFER
|
||||
==================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_CLEAR_BUFFER
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_CLEAR_BUFFER)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_CLEAR_BUFFER for this command.
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl call asks the Audio Device to clear all software and hardware
|
||||
buffers of the audio decoder device.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,54 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_CONTINUE:
|
||||
|
||||
==============
|
||||
AUDIO_CONTINUE
|
||||
==============
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_CONTINUE
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_CONTINUE)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_CONTINUE for this command.
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl restarts the decoding and playing process previously paused
|
||||
with AUDIO_PAUSE command.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,54 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _audio_fclose:
|
||||
|
||||
=================
|
||||
DVB audio close()
|
||||
=================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
DVB audio close()
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int close(int fd)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This system call closes a previously opened audio device.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- ``EBADF``
|
||||
|
||||
- fd is not a valid open file descriptor.
|
||||
|
|
@ -0,0 +1,104 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _audio_fopen:
|
||||
|
||||
================
|
||||
DVB audio open()
|
||||
================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
DVB audio open()
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int open(const char *deviceName, int flags)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- const char \*deviceName
|
||||
|
||||
- Name of specific audio device.
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int flags
|
||||
|
||||
- A bit-wise OR of the following flags:
|
||||
|
||||
- .. row 3
|
||||
|
||||
-
|
||||
- O_RDONLY read-only access
|
||||
|
||||
- .. row 4
|
||||
|
||||
-
|
||||
- O_RDWR read/write access
|
||||
|
||||
- .. row 5
|
||||
|
||||
-
|
||||
- O_NONBLOCK open in non-blocking mode
|
||||
|
||||
- .. row 6
|
||||
|
||||
-
|
||||
- (blocking mode is the default)
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This system call opens a named audio device (e.g.
|
||||
/dev/dvb/adapter0/audio0) for subsequent use. When an open() call has
|
||||
succeeded, the device will be ready for use. The significance of
|
||||
blocking or non-blocking mode is described in the documentation for
|
||||
functions where there is a difference. It does not affect the semantics
|
||||
of the open() call itself. A device opened in blocking mode can later be
|
||||
put into non-blocking mode (and vice versa) using the F_SETFL command
|
||||
of the fcntl system call. This is a standard system call, documented in
|
||||
the Linux manual page for fcntl. Only one user can open the Audio Device
|
||||
in O_RDWR mode. All other attempts to open the device in this mode will
|
||||
fail, and an error code will be returned. If the Audio Device is opened
|
||||
in O_RDONLY mode, the only ioctl call that can be used is
|
||||
AUDIO_GET_STATUS. All other call will return with an error code.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- ``ENODEV``
|
||||
|
||||
- Device driver not loaded/available.
|
||||
|
||||
- .. row 2
|
||||
|
||||
- ``EBUSY``
|
||||
|
||||
- Device or resource busy.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- ``EINVAL``
|
||||
|
||||
- Invalid argument.
|
||||
|
|
@ -0,0 +1,82 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _audio_fwrite:
|
||||
|
||||
=================
|
||||
DVB audio write()
|
||||
=================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
DVB audio write()
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: size_t write(int fd, const void *buf, size_t count)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- void \*buf
|
||||
|
||||
- Pointer to the buffer containing the PES data.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- size_t count
|
||||
|
||||
- Size of buf.
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This system call can only be used if AUDIO_SOURCE_MEMORY is selected
|
||||
in the ioctl call AUDIO_SELECT_SOURCE. The data provided shall be in
|
||||
PES format. If O_NONBLOCK is not specified the function will block
|
||||
until buffer space is available. The amount of data to be transferred is
|
||||
implied by count.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- ``EPERM``
|
||||
|
||||
- Mode AUDIO_SOURCE_MEMORY not selected.
|
||||
|
||||
- .. row 2
|
||||
|
||||
- ``ENOMEM``
|
||||
|
||||
- Attempted to write more data than the internal buffer can hold.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- ``EBADF``
|
||||
|
||||
- fd is not a valid open file descriptor.
|
||||
|
|
@ -0,0 +1,60 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_GET_CAPABILITIES:
|
||||
|
||||
======================
|
||||
AUDIO_GET_CAPABILITIES
|
||||
======================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_GET_CAPABILITIES
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_GET_CAPABILITIES, unsigned int *cap)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_GET_CAPABILITIES for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- unsigned int \*cap
|
||||
|
||||
- Returns a bit array of supported sound formats.
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl call asks the Audio Device to tell us about the decoding
|
||||
capabilities of the audio hardware.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,69 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_GET_PTS:
|
||||
|
||||
=============
|
||||
AUDIO_GET_PTS
|
||||
=============
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_GET_PTS
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_GET_PTS, __u64 *pts)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_GET_PTS for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- __u64 \*pts
|
||||
|
||||
- Returns the 33-bit timestamp as defined in ITU T-REC-H.222.0 /
|
||||
ISO/IEC 13818-1.
|
||||
|
||||
The PTS should belong to the currently played frame if possible,
|
||||
but may also be a value close to it like the PTS of the last
|
||||
decoded frame or the last PTS extracted by the PES parser.
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl is obsolete. Do not use in new drivers. If you need this
|
||||
functionality, then please contact the linux-media mailing list
|
||||
(`https://linuxtv.org/lists.php <https://linuxtv.org/lists.php>`__).
|
||||
|
||||
This ioctl call asks the Audio Device to return the current PTS
|
||||
timestamp.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,60 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_GET_STATUS:
|
||||
|
||||
================
|
||||
AUDIO_GET_STATUS
|
||||
================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_GET_STATUS
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_GET_STATUS, struct audio_status *status)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_GET_STATUS for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- struct audio_status \*status
|
||||
|
||||
- Returns the current state of Audio Device.
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl call asks the Audio Device to return the current state of the
|
||||
Audio Device.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,55 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_PAUSE:
|
||||
|
||||
===========
|
||||
AUDIO_PAUSE
|
||||
===========
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_PAUSE
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_PAUSE)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_PAUSE for this command.
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl call suspends the audio stream being played. Decoding and
|
||||
playing are paused. It is then possible to restart again decoding and
|
||||
playing process of the audio stream using AUDIO_CONTINUE command.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,54 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_PLAY:
|
||||
|
||||
==========
|
||||
AUDIO_PLAY
|
||||
==========
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_PLAY
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_PLAY)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_PLAY for this command.
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl call asks the Audio Device to start playing an audio stream
|
||||
from the selected source.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,62 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_SELECT_SOURCE:
|
||||
|
||||
===================
|
||||
AUDIO_SELECT_SOURCE
|
||||
===================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_SELECT_SOURCE
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_SELECT_SOURCE, audio_stream_source_t source)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_SELECT_SOURCE for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- audio_stream_source_t source
|
||||
|
||||
- Indicates the source that shall be used for the Audio stream.
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl call informs the audio device which source shall be used for
|
||||
the input data. The possible sources are demux or memory. If
|
||||
AUDIO_SOURCE_MEMORY is selected, the data is fed to the Audio Device
|
||||
through the write command.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,71 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_SET_ATTRIBUTES:
|
||||
|
||||
====================
|
||||
AUDIO_SET_ATTRIBUTES
|
||||
====================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_SET_ATTRIBUTES
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(fd, int request = AUDIO_SET_ATTRIBUTES, audio_attributes_t attr )
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_SET_ATTRIBUTES for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- audio_attributes_t attr
|
||||
|
||||
- audio attributes according to section ??
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl is intended for DVD playback and allows you to set certain
|
||||
information about the audio stream.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- ``EINVAL``
|
||||
|
||||
- attr is not a valid or supported attribute setting.
|
||||
|
|
@ -0,0 +1,70 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_SET_AV_SYNC:
|
||||
|
||||
=================
|
||||
AUDIO_SET_AV_SYNC
|
||||
=================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_SET_AV_SYNC
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_SET_AV_SYNC, boolean state)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_AV_SYNC for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- boolean state
|
||||
|
||||
- Tells the DVB subsystem if A/V synchronization shall be ON or OFF.
|
||||
|
||||
- .. row 4
|
||||
|
||||
-
|
||||
- TRUE AV-sync ON
|
||||
|
||||
- .. row 5
|
||||
|
||||
-
|
||||
- FALSE AV-sync OFF
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl call asks the Audio Device to turn ON or OFF A/V
|
||||
synchronization.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,74 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_SET_BYPASS_MODE:
|
||||
|
||||
=====================
|
||||
AUDIO_SET_BYPASS_MODE
|
||||
=====================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_SET_BYPASS_MODE
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_SET_BYPASS_MODE, boolean mode)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_SET_BYPASS_MODE for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- boolean mode
|
||||
|
||||
- Enables or disables the decoding of the current Audio stream in
|
||||
the DVB subsystem.
|
||||
|
||||
- .. row 4
|
||||
|
||||
-
|
||||
- TRUE Bypass is disabled
|
||||
|
||||
- .. row 5
|
||||
|
||||
-
|
||||
- FALSE Bypass is enabled
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl call asks the Audio Device to bypass the Audio decoder and
|
||||
forward the stream without decoding. This mode shall be used if streams
|
||||
that can’t be handled by the DVB system shall be decoded. Dolby
|
||||
DigitalTM streams are automatically forwarded by the DVB subsystem if
|
||||
the hardware can handle it.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,71 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_SET_EXT_ID:
|
||||
|
||||
================
|
||||
AUDIO_SET_EXT_ID
|
||||
================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_SET_EXT_ID
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(fd, int request = AUDIO_SET_EXT_ID, int id)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_SET_EXT_ID for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- int id
|
||||
|
||||
- audio sub_stream_id
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl can be used to set the extension id for MPEG streams in DVD
|
||||
playback. Only the first 3 bits are recognized.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- ``EINVAL``
|
||||
|
||||
- id is not a valid id.
|
||||
|
|
@ -0,0 +1,65 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_SET_ID:
|
||||
|
||||
============
|
||||
AUDIO_SET_ID
|
||||
============
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_SET_ID
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_SET_ID, int id)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_SET_ID for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- int id
|
||||
|
||||
- audio sub-stream id
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl selects which sub-stream is to be decoded if a program or
|
||||
system stream is sent to the video device. If no audio stream type is
|
||||
set the id has to be in [0xC0,0xDF] for MPEG sound, in [0x80,0x87] for
|
||||
AC3 and in [0xA0,0xA7] for LPCM. More specifications may follow for
|
||||
other stream types. If the stream type is set the id just specifies the
|
||||
substream id of the audio stream and only the first 5 bits are
|
||||
recognized.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,70 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_SET_KARAOKE:
|
||||
|
||||
=================
|
||||
AUDIO_SET_KARAOKE
|
||||
=================
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_SET_KARAOKE
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(fd, int request = AUDIO_SET_KARAOKE, audio_karaoke_t *karaoke)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_SET_KARAOKE for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- audio_karaoke_t \*karaoke
|
||||
|
||||
- karaoke settings according to section ??.
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl allows one to set the mixer settings for a karaoke DVD.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- ``EINVAL``
|
||||
|
||||
- karaoke is not a valid or supported karaoke setting.
|
||||
|
|
@ -0,0 +1,59 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_SET_MIXER:
|
||||
|
||||
===============
|
||||
AUDIO_SET_MIXER
|
||||
===============
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_SET_MIXER
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_SET_MIXER, audio_mixer_t *mix)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_SET_ID for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- audio_mixer_t \*mix
|
||||
|
||||
- mixer settings.
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl lets you adjust the mixer settings of the audio decoder.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
|
|
@ -0,0 +1,74 @@
|
|||
.. -*- coding: utf-8; mode: rst -*-
|
||||
|
||||
.. _AUDIO_SET_MUTE:
|
||||
|
||||
==============
|
||||
AUDIO_SET_MUTE
|
||||
==============
|
||||
|
||||
Name
|
||||
----
|
||||
|
||||
AUDIO_SET_MUTE
|
||||
|
||||
|
||||
Synopsis
|
||||
--------
|
||||
|
||||
.. cpp:function:: int ioctl(int fd, int request = AUDIO_SET_MUTE, boolean state)
|
||||
|
||||
|
||||
Arguments
|
||||
---------
|
||||
|
||||
.. flat-table::
|
||||
:header-rows: 0
|
||||
:stub-columns: 0
|
||||
|
||||
|
||||
- .. row 1
|
||||
|
||||
- int fd
|
||||
|
||||
- File descriptor returned by a previous call to open().
|
||||
|
||||
- .. row 2
|
||||
|
||||
- int request
|
||||
|
||||
- Equals AUDIO_SET_MUTE for this command.
|
||||
|
||||
- .. row 3
|
||||
|
||||
- boolean state
|
||||
|
||||
- Indicates if audio device shall mute or not.
|
||||
|
||||
- .. row 4
|
||||
|
||||
-
|
||||
- TRUE Audio Mute
|
||||
|
||||
- .. row 5
|
||||
|
||||
-
|
||||
- FALSE Audio Un-mute
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This ioctl is for DVB devices only. To control a V4L2 decoder use the
|
||||
V4L2 :ref:`VIDIOC_DECODER_CMD` with the
|
||||
``V4L2_DEC_CMD_START_MUTE_AUDIO`` flag instead.
|
||||
|
||||
This ioctl call asks the audio device to mute the stream that is
|
||||
currently being played.
|
||||
|
||||
|
||||
Return Value
|
||||
------------
|
||||
|
||||
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
||||
appropriately. The generic error codes are described at the
|
||||
:ref:`Generic Error Codes <gen-errors>` chapter.
|
||||
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue