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![Hans Verkuil](/assets/img/avatar_default.png)
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2294 lines
59 KiB
C
2294 lines
59 KiB
C
/*
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* Video capture interface for Linux version 2
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*
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* A generic framework to process V4L2 ioctl commands.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
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* Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
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*/
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/version.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-fh.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-chip-ident.h>
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#define dbgarg(cmd, fmt, arg...) \
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do { \
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if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) { \
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printk(KERN_DEBUG "%s: ", vfd->name); \
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v4l_printk_ioctl(cmd); \
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printk(" " fmt, ## arg); \
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} \
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} while (0)
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#define dbgarg2(fmt, arg...) \
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do { \
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if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) \
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printk(KERN_DEBUG "%s: " fmt, vfd->name, ## arg);\
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} while (0)
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#define dbgarg3(fmt, arg...) \
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do { \
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if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) \
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printk(KERN_CONT "%s: " fmt, vfd->name, ## arg);\
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} while (0)
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/* Zero out the end of the struct pointed to by p. Everything after, but
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* not including, the specified field is cleared. */
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#define CLEAR_AFTER_FIELD(p, field) \
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memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
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0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
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struct std_descr {
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v4l2_std_id std;
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const char *descr;
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};
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static const struct std_descr standards[] = {
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{ V4L2_STD_NTSC, "NTSC" },
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{ V4L2_STD_NTSC_M, "NTSC-M" },
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{ V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
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{ V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
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{ V4L2_STD_NTSC_443, "NTSC-443" },
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{ V4L2_STD_PAL, "PAL" },
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{ V4L2_STD_PAL_BG, "PAL-BG" },
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{ V4L2_STD_PAL_B, "PAL-B" },
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{ V4L2_STD_PAL_B1, "PAL-B1" },
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{ V4L2_STD_PAL_G, "PAL-G" },
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{ V4L2_STD_PAL_H, "PAL-H" },
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{ V4L2_STD_PAL_I, "PAL-I" },
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{ V4L2_STD_PAL_DK, "PAL-DK" },
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{ V4L2_STD_PAL_D, "PAL-D" },
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{ V4L2_STD_PAL_D1, "PAL-D1" },
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{ V4L2_STD_PAL_K, "PAL-K" },
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{ V4L2_STD_PAL_M, "PAL-M" },
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{ V4L2_STD_PAL_N, "PAL-N" },
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{ V4L2_STD_PAL_Nc, "PAL-Nc" },
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{ V4L2_STD_PAL_60, "PAL-60" },
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{ V4L2_STD_SECAM, "SECAM" },
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{ V4L2_STD_SECAM_B, "SECAM-B" },
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{ V4L2_STD_SECAM_G, "SECAM-G" },
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{ V4L2_STD_SECAM_H, "SECAM-H" },
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{ V4L2_STD_SECAM_DK, "SECAM-DK" },
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{ V4L2_STD_SECAM_D, "SECAM-D" },
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{ V4L2_STD_SECAM_K, "SECAM-K" },
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{ V4L2_STD_SECAM_K1, "SECAM-K1" },
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{ V4L2_STD_SECAM_L, "SECAM-L" },
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{ V4L2_STD_SECAM_LC, "SECAM-Lc" },
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{ 0, "Unknown" }
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};
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/* video4linux standard ID conversion to standard name
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*/
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const char *v4l2_norm_to_name(v4l2_std_id id)
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{
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u32 myid = id;
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int i;
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/* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
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64 bit comparations. So, on that architecture, with some gcc
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variants, compilation fails. Currently, the max value is 30bit wide.
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*/
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BUG_ON(myid != id);
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for (i = 0; standards[i].std; i++)
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if (myid == standards[i].std)
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break;
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return standards[i].descr;
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}
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EXPORT_SYMBOL(v4l2_norm_to_name);
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/* Returns frame period for the given standard */
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void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
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{
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if (id & V4L2_STD_525_60) {
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frameperiod->numerator = 1001;
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frameperiod->denominator = 30000;
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} else {
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frameperiod->numerator = 1;
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frameperiod->denominator = 25;
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}
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}
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EXPORT_SYMBOL(v4l2_video_std_frame_period);
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/* Fill in the fields of a v4l2_standard structure according to the
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'id' and 'transmission' parameters. Returns negative on error. */
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int v4l2_video_std_construct(struct v4l2_standard *vs,
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int id, const char *name)
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{
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vs->id = id;
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v4l2_video_std_frame_period(id, &vs->frameperiod);
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vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
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strlcpy(vs->name, name, sizeof(vs->name));
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return 0;
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}
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EXPORT_SYMBOL(v4l2_video_std_construct);
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/* ----------------------------------------------------------------- */
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/* some arrays for pretty-printing debug messages of enum types */
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const char *v4l2_field_names[] = {
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[V4L2_FIELD_ANY] = "any",
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[V4L2_FIELD_NONE] = "none",
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[V4L2_FIELD_TOP] = "top",
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[V4L2_FIELD_BOTTOM] = "bottom",
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[V4L2_FIELD_INTERLACED] = "interlaced",
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[V4L2_FIELD_SEQ_TB] = "seq-tb",
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[V4L2_FIELD_SEQ_BT] = "seq-bt",
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[V4L2_FIELD_ALTERNATE] = "alternate",
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[V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
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[V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
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};
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EXPORT_SYMBOL(v4l2_field_names);
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const char *v4l2_type_names[] = {
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[V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
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[V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
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[V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
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[V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
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[V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
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[V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
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[V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
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[V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
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[V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
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[V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
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};
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EXPORT_SYMBOL(v4l2_type_names);
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static const char *v4l2_memory_names[] = {
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[V4L2_MEMORY_MMAP] = "mmap",
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[V4L2_MEMORY_USERPTR] = "userptr",
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[V4L2_MEMORY_OVERLAY] = "overlay",
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};
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#define prt_names(a, arr) ((((a) >= 0) && ((a) < ARRAY_SIZE(arr))) ? \
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arr[a] : "unknown")
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/* ------------------------------------------------------------------ */
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/* debug help functions */
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struct v4l2_ioctl_info {
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unsigned int ioctl;
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u16 flags;
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const char * const name;
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};
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/* This control needs a priority check */
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#define INFO_FL_PRIO (1 << 0)
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/* This control can be valid if the filehandle passes a control handler. */
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#define INFO_FL_CTRL (1 << 1)
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#define IOCTL_INFO(_ioctl, _flags) [_IOC_NR(_ioctl)] = { \
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.ioctl = _ioctl, \
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.flags = _flags, \
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.name = #_ioctl, \
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}
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static struct v4l2_ioctl_info v4l2_ioctls[] = {
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IOCTL_INFO(VIDIOC_QUERYCAP, 0),
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IOCTL_INFO(VIDIOC_ENUM_FMT, 0),
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IOCTL_INFO(VIDIOC_G_FMT, 0),
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IOCTL_INFO(VIDIOC_S_FMT, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_REQBUFS, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_QUERYBUF, 0),
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IOCTL_INFO(VIDIOC_G_FBUF, 0),
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IOCTL_INFO(VIDIOC_S_FBUF, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_OVERLAY, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_QBUF, 0),
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IOCTL_INFO(VIDIOC_DQBUF, 0),
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IOCTL_INFO(VIDIOC_STREAMON, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_STREAMOFF, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_G_PARM, 0),
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IOCTL_INFO(VIDIOC_S_PARM, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_G_STD, 0),
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IOCTL_INFO(VIDIOC_S_STD, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_ENUMSTD, 0),
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IOCTL_INFO(VIDIOC_ENUMINPUT, 0),
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IOCTL_INFO(VIDIOC_G_CTRL, INFO_FL_CTRL),
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IOCTL_INFO(VIDIOC_S_CTRL, INFO_FL_PRIO | INFO_FL_CTRL),
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IOCTL_INFO(VIDIOC_G_TUNER, 0),
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IOCTL_INFO(VIDIOC_S_TUNER, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_G_AUDIO, 0),
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IOCTL_INFO(VIDIOC_S_AUDIO, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_QUERYCTRL, INFO_FL_CTRL),
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IOCTL_INFO(VIDIOC_QUERYMENU, INFO_FL_CTRL),
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IOCTL_INFO(VIDIOC_G_INPUT, 0),
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IOCTL_INFO(VIDIOC_S_INPUT, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_G_OUTPUT, 0),
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IOCTL_INFO(VIDIOC_S_OUTPUT, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_ENUMOUTPUT, 0),
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IOCTL_INFO(VIDIOC_G_AUDOUT, 0),
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IOCTL_INFO(VIDIOC_S_AUDOUT, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_G_MODULATOR, 0),
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IOCTL_INFO(VIDIOC_S_MODULATOR, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_G_FREQUENCY, 0),
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IOCTL_INFO(VIDIOC_S_FREQUENCY, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_CROPCAP, 0),
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IOCTL_INFO(VIDIOC_G_CROP, 0),
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IOCTL_INFO(VIDIOC_S_CROP, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_G_SELECTION, 0),
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IOCTL_INFO(VIDIOC_S_SELECTION, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_G_JPEGCOMP, 0),
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IOCTL_INFO(VIDIOC_S_JPEGCOMP, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_QUERYSTD, 0),
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IOCTL_INFO(VIDIOC_TRY_FMT, 0),
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IOCTL_INFO(VIDIOC_ENUMAUDIO, 0),
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IOCTL_INFO(VIDIOC_ENUMAUDOUT, 0),
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IOCTL_INFO(VIDIOC_G_PRIORITY, 0),
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IOCTL_INFO(VIDIOC_S_PRIORITY, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, 0),
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IOCTL_INFO(VIDIOC_LOG_STATUS, 0),
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IOCTL_INFO(VIDIOC_G_EXT_CTRLS, INFO_FL_CTRL),
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IOCTL_INFO(VIDIOC_S_EXT_CTRLS, INFO_FL_PRIO | INFO_FL_CTRL),
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IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, 0),
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IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, 0),
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IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, 0),
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IOCTL_INFO(VIDIOC_G_ENC_INDEX, 0),
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IOCTL_INFO(VIDIOC_ENCODER_CMD, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, 0),
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IOCTL_INFO(VIDIOC_DECODER_CMD, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, 0),
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#ifdef CONFIG_VIDEO_ADV_DEBUG
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IOCTL_INFO(VIDIOC_DBG_S_REGISTER, 0),
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IOCTL_INFO(VIDIOC_DBG_G_REGISTER, 0),
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#endif
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IOCTL_INFO(VIDIOC_DBG_G_CHIP_IDENT, 0),
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IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_ENUM_DV_PRESETS, 0),
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IOCTL_INFO(VIDIOC_S_DV_PRESET, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_G_DV_PRESET, 0),
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IOCTL_INFO(VIDIOC_QUERY_DV_PRESET, 0),
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IOCTL_INFO(VIDIOC_S_DV_TIMINGS, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_G_DV_TIMINGS, 0),
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IOCTL_INFO(VIDIOC_DQEVENT, 0),
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IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, 0),
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IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, 0),
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IOCTL_INFO(VIDIOC_CREATE_BUFS, INFO_FL_PRIO),
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IOCTL_INFO(VIDIOC_PREPARE_BUF, 0),
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IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, 0),
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IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, 0),
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IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, 0),
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};
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#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
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bool v4l2_is_known_ioctl(unsigned int cmd)
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{
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if (_IOC_NR(cmd) >= V4L2_IOCTLS)
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return false;
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return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
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}
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/* Common ioctl debug function. This function can be used by
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external ioctl messages as well as internal V4L ioctl */
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void v4l_printk_ioctl(unsigned int cmd)
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{
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char *dir, *type;
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switch (_IOC_TYPE(cmd)) {
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case 'd':
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type = "v4l2_int";
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break;
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case 'V':
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if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
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type = "v4l2";
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break;
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}
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printk("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
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return;
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default:
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type = "unknown";
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}
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switch (_IOC_DIR(cmd)) {
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case _IOC_NONE: dir = "--"; break;
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case _IOC_READ: dir = "r-"; break;
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case _IOC_WRITE: dir = "-w"; break;
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case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
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default: dir = "*ERR*"; break;
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}
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printk("%s ioctl '%c', dir=%s, #%d (0x%08x)",
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type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
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}
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EXPORT_SYMBOL(v4l_printk_ioctl);
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static void dbgbuf(unsigned int cmd, struct video_device *vfd,
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struct v4l2_buffer *p)
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{
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struct v4l2_timecode *tc = &p->timecode;
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struct v4l2_plane *plane;
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int i;
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dbgarg(cmd, "%02ld:%02d:%02d.%08ld index=%d, type=%s, "
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"flags=0x%08d, field=%0d, sequence=%d, memory=%s\n",
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p->timestamp.tv_sec / 3600,
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(int)(p->timestamp.tv_sec / 60) % 60,
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(int)(p->timestamp.tv_sec % 60),
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(long)p->timestamp.tv_usec,
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p->index,
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prt_names(p->type, v4l2_type_names),
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p->flags, p->field, p->sequence,
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prt_names(p->memory, v4l2_memory_names));
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|
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if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
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for (i = 0; i < p->length; ++i) {
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plane = &p->m.planes[i];
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dbgarg2("plane %d: bytesused=%d, data_offset=0x%08x "
|
|
"offset/userptr=0x%08lx, length=%d\n",
|
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i, plane->bytesused, plane->data_offset,
|
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plane->m.userptr, plane->length);
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}
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} else {
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dbgarg2("bytesused=%d, offset/userptr=0x%08lx, length=%d\n",
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p->bytesused, p->m.userptr, p->length);
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}
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dbgarg2("timecode=%02d:%02d:%02d type=%d, "
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"flags=0x%08d, frames=%d, userbits=0x%08x\n",
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tc->hours, tc->minutes, tc->seconds,
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tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
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}
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static inline void dbgrect(struct video_device *vfd, char *s,
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struct v4l2_rect *r)
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{
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dbgarg2("%sRect start at %dx%d, size=%dx%d\n", s, r->left, r->top,
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r->width, r->height);
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};
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|
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static void dbgtimings(struct video_device *vfd,
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const struct v4l2_dv_timings *p)
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{
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switch (p->type) {
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case V4L2_DV_BT_656_1120:
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dbgarg2("bt-656/1120:interlaced=%d,"
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" pixelclock=%lld,"
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" width=%d, height=%d, polarities=%x,"
|
|
" hfrontporch=%d, hsync=%d,"
|
|
" hbackporch=%d, vfrontporch=%d,"
|
|
" vsync=%d, vbackporch=%d,"
|
|
" il_vfrontporch=%d, il_vsync=%d,"
|
|
" il_vbackporch=%d, standards=%x, flags=%x\n",
|
|
p->bt.interlaced, p->bt.pixelclock,
|
|
p->bt.width, p->bt.height,
|
|
p->bt.polarities, p->bt.hfrontporch,
|
|
p->bt.hsync, p->bt.hbackporch,
|
|
p->bt.vfrontporch, p->bt.vsync,
|
|
p->bt.vbackporch, p->bt.il_vfrontporch,
|
|
p->bt.il_vsync, p->bt.il_vbackporch,
|
|
p->bt.standards, p->bt.flags);
|
|
break;
|
|
default:
|
|
dbgarg2("Unknown type %d!\n", p->type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static inline void v4l_print_pix_fmt(struct video_device *vfd,
|
|
struct v4l2_pix_format *fmt)
|
|
{
|
|
dbgarg2("width=%d, height=%d, format=%c%c%c%c, field=%s, "
|
|
"bytesperline=%d sizeimage=%d, colorspace=%d\n",
|
|
fmt->width, fmt->height,
|
|
(fmt->pixelformat & 0xff),
|
|
(fmt->pixelformat >> 8) & 0xff,
|
|
(fmt->pixelformat >> 16) & 0xff,
|
|
(fmt->pixelformat >> 24) & 0xff,
|
|
prt_names(fmt->field, v4l2_field_names),
|
|
fmt->bytesperline, fmt->sizeimage, fmt->colorspace);
|
|
};
|
|
|
|
static inline void v4l_print_pix_fmt_mplane(struct video_device *vfd,
|
|
struct v4l2_pix_format_mplane *fmt)
|
|
{
|
|
int i;
|
|
|
|
dbgarg2("width=%d, height=%d, format=%c%c%c%c, field=%s, "
|
|
"colorspace=%d, num_planes=%d\n",
|
|
fmt->width, fmt->height,
|
|
(fmt->pixelformat & 0xff),
|
|
(fmt->pixelformat >> 8) & 0xff,
|
|
(fmt->pixelformat >> 16) & 0xff,
|
|
(fmt->pixelformat >> 24) & 0xff,
|
|
prt_names(fmt->field, v4l2_field_names),
|
|
fmt->colorspace, fmt->num_planes);
|
|
|
|
for (i = 0; i < fmt->num_planes; ++i)
|
|
dbgarg2("plane %d: bytesperline=%d sizeimage=%d\n", i,
|
|
fmt->plane_fmt[i].bytesperline,
|
|
fmt->plane_fmt[i].sizeimage);
|
|
}
|
|
|
|
static inline void v4l_print_ext_ctrls(unsigned int cmd,
|
|
struct video_device *vfd, struct v4l2_ext_controls *c, int show_vals)
|
|
{
|
|
__u32 i;
|
|
|
|
if (!(vfd->debug & V4L2_DEBUG_IOCTL_ARG))
|
|
return;
|
|
dbgarg(cmd, "");
|
|
printk(KERN_CONT "class=0x%x", c->ctrl_class);
|
|
for (i = 0; i < c->count; i++) {
|
|
if (show_vals && !c->controls[i].size)
|
|
printk(KERN_CONT " id/val=0x%x/0x%x",
|
|
c->controls[i].id, c->controls[i].value);
|
|
else
|
|
printk(KERN_CONT " id=0x%x,size=%u",
|
|
c->controls[i].id, c->controls[i].size);
|
|
}
|
|
printk(KERN_CONT "\n");
|
|
};
|
|
|
|
static inline int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
|
|
{
|
|
__u32 i;
|
|
|
|
/* zero the reserved fields */
|
|
c->reserved[0] = c->reserved[1] = 0;
|
|
for (i = 0; i < c->count; i++)
|
|
c->controls[i].reserved2[0] = 0;
|
|
|
|
/* V4L2_CID_PRIVATE_BASE cannot be used as control class
|
|
when using extended controls.
|
|
Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
|
|
is it allowed for backwards compatibility.
|
|
*/
|
|
if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
|
|
return 0;
|
|
/* Check that all controls are from the same control class. */
|
|
for (i = 0; i < c->count; i++) {
|
|
if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
|
|
c->error_idx = i;
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int check_fmt(const struct v4l2_ioctl_ops *ops, enum v4l2_buf_type type)
|
|
{
|
|
if (ops == NULL)
|
|
return -EINVAL;
|
|
|
|
switch (type) {
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
|
|
if (ops->vidioc_g_fmt_vid_cap ||
|
|
ops->vidioc_g_fmt_vid_cap_mplane)
|
|
return 0;
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
|
|
if (ops->vidioc_g_fmt_vid_cap_mplane)
|
|
return 0;
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
|
|
if (ops->vidioc_g_fmt_vid_overlay)
|
|
return 0;
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
|
|
if (ops->vidioc_g_fmt_vid_out ||
|
|
ops->vidioc_g_fmt_vid_out_mplane)
|
|
return 0;
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
|
|
if (ops->vidioc_g_fmt_vid_out_mplane)
|
|
return 0;
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
|
|
if (ops->vidioc_g_fmt_vid_out_overlay)
|
|
return 0;
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_CAPTURE:
|
|
if (ops->vidioc_g_fmt_vbi_cap)
|
|
return 0;
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_OUTPUT:
|
|
if (ops->vidioc_g_fmt_vbi_out)
|
|
return 0;
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
|
|
if (ops->vidioc_g_fmt_sliced_vbi_cap)
|
|
return 0;
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
|
|
if (ops->vidioc_g_fmt_sliced_vbi_out)
|
|
return 0;
|
|
break;
|
|
case V4L2_BUF_TYPE_PRIVATE:
|
|
if (ops->vidioc_g_fmt_type_private)
|
|
return 0;
|
|
break;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
static long __video_do_ioctl(struct file *file,
|
|
unsigned int cmd, void *arg)
|
|
{
|
|
struct video_device *vfd = video_devdata(file);
|
|
const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
|
|
void *fh = file->private_data;
|
|
struct v4l2_fh *vfh = NULL;
|
|
int use_fh_prio = 0;
|
|
long ret = -ENOTTY;
|
|
|
|
if (ops == NULL) {
|
|
printk(KERN_WARNING "videodev: \"%s\" has no ioctl_ops.\n",
|
|
vfd->name);
|
|
return ret;
|
|
}
|
|
|
|
if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) {
|
|
vfh = file->private_data;
|
|
use_fh_prio = test_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
|
|
}
|
|
|
|
if (v4l2_is_known_ioctl(cmd)) {
|
|
struct v4l2_ioctl_info *info = &v4l2_ioctls[_IOC_NR(cmd)];
|
|
|
|
if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
|
|
!((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
|
|
return -ENOTTY;
|
|
|
|
if (use_fh_prio && (info->flags & INFO_FL_PRIO)) {
|
|
ret = v4l2_prio_check(vfd->prio, vfh->prio);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if ((vfd->debug & V4L2_DEBUG_IOCTL) &&
|
|
!(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) {
|
|
v4l_print_ioctl(vfd->name, cmd);
|
|
printk(KERN_CONT "\n");
|
|
}
|
|
|
|
switch (cmd) {
|
|
|
|
/* --- capabilities ------------------------------------------ */
|
|
case VIDIOC_QUERYCAP:
|
|
{
|
|
struct v4l2_capability *cap = (struct v4l2_capability *)arg;
|
|
|
|
cap->version = LINUX_VERSION_CODE;
|
|
ret = ops->vidioc_querycap(file, fh, cap);
|
|
if (!ret)
|
|
dbgarg(cmd, "driver=%s, card=%s, bus=%s, "
|
|
"version=0x%08x, "
|
|
"capabilities=0x%08x, "
|
|
"device_caps=0x%08x\n",
|
|
cap->driver, cap->card, cap->bus_info,
|
|
cap->version,
|
|
cap->capabilities,
|
|
cap->device_caps);
|
|
break;
|
|
}
|
|
|
|
/* --- priority ------------------------------------------ */
|
|
case VIDIOC_G_PRIORITY:
|
|
{
|
|
enum v4l2_priority *p = arg;
|
|
|
|
if (ops->vidioc_g_priority) {
|
|
ret = ops->vidioc_g_priority(file, fh, p);
|
|
} else if (use_fh_prio) {
|
|
*p = v4l2_prio_max(&vfd->v4l2_dev->prio);
|
|
ret = 0;
|
|
}
|
|
if (!ret)
|
|
dbgarg(cmd, "priority is %d\n", *p);
|
|
break;
|
|
}
|
|
case VIDIOC_S_PRIORITY:
|
|
{
|
|
enum v4l2_priority *p = arg;
|
|
|
|
dbgarg(cmd, "setting priority to %d\n", *p);
|
|
if (ops->vidioc_s_priority)
|
|
ret = ops->vidioc_s_priority(file, fh, *p);
|
|
else
|
|
ret = v4l2_prio_change(&vfd->v4l2_dev->prio,
|
|
&vfh->prio, *p);
|
|
break;
|
|
}
|
|
|
|
/* --- capture ioctls ---------------------------------------- */
|
|
case VIDIOC_ENUM_FMT:
|
|
{
|
|
struct v4l2_fmtdesc *f = arg;
|
|
|
|
ret = -EINVAL;
|
|
switch (f->type) {
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
|
|
if (likely(ops->vidioc_enum_fmt_vid_cap))
|
|
ret = ops->vidioc_enum_fmt_vid_cap(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
|
|
if (likely(ops->vidioc_enum_fmt_vid_cap_mplane))
|
|
ret = ops->vidioc_enum_fmt_vid_cap_mplane(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
|
|
if (likely(ops->vidioc_enum_fmt_vid_overlay))
|
|
ret = ops->vidioc_enum_fmt_vid_overlay(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
|
|
if (likely(ops->vidioc_enum_fmt_vid_out))
|
|
ret = ops->vidioc_enum_fmt_vid_out(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
|
|
if (likely(ops->vidioc_enum_fmt_vid_out_mplane))
|
|
ret = ops->vidioc_enum_fmt_vid_out_mplane(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_PRIVATE:
|
|
if (likely(ops->vidioc_enum_fmt_type_private))
|
|
ret = ops->vidioc_enum_fmt_type_private(file,
|
|
fh, f);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (likely(!ret))
|
|
dbgarg(cmd, "index=%d, type=%d, flags=%d, "
|
|
"pixelformat=%c%c%c%c, description='%s'\n",
|
|
f->index, f->type, f->flags,
|
|
(f->pixelformat & 0xff),
|
|
(f->pixelformat >> 8) & 0xff,
|
|
(f->pixelformat >> 16) & 0xff,
|
|
(f->pixelformat >> 24) & 0xff,
|
|
f->description);
|
|
break;
|
|
}
|
|
case VIDIOC_G_FMT:
|
|
{
|
|
struct v4l2_format *f = (struct v4l2_format *)arg;
|
|
|
|
/* FIXME: Should be one dump per type */
|
|
dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names));
|
|
|
|
ret = -EINVAL;
|
|
switch (f->type) {
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
|
|
if (ops->vidioc_g_fmt_vid_cap)
|
|
ret = ops->vidioc_g_fmt_vid_cap(file, fh, f);
|
|
if (!ret)
|
|
v4l_print_pix_fmt(vfd, &f->fmt.pix);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
|
|
if (ops->vidioc_g_fmt_vid_cap_mplane)
|
|
ret = ops->vidioc_g_fmt_vid_cap_mplane(file,
|
|
fh, f);
|
|
if (!ret)
|
|
v4l_print_pix_fmt_mplane(vfd, &f->fmt.pix_mp);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
|
|
if (likely(ops->vidioc_g_fmt_vid_overlay))
|
|
ret = ops->vidioc_g_fmt_vid_overlay(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
|
|
if (ops->vidioc_g_fmt_vid_out)
|
|
ret = ops->vidioc_g_fmt_vid_out(file, fh, f);
|
|
if (!ret)
|
|
v4l_print_pix_fmt(vfd, &f->fmt.pix);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
|
|
if (ops->vidioc_g_fmt_vid_out_mplane)
|
|
ret = ops->vidioc_g_fmt_vid_out_mplane(file,
|
|
fh, f);
|
|
if (!ret)
|
|
v4l_print_pix_fmt_mplane(vfd, &f->fmt.pix_mp);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
|
|
if (likely(ops->vidioc_g_fmt_vid_out_overlay))
|
|
ret = ops->vidioc_g_fmt_vid_out_overlay(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_CAPTURE:
|
|
if (likely(ops->vidioc_g_fmt_vbi_cap))
|
|
ret = ops->vidioc_g_fmt_vbi_cap(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_OUTPUT:
|
|
if (likely(ops->vidioc_g_fmt_vbi_out))
|
|
ret = ops->vidioc_g_fmt_vbi_out(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
|
|
if (likely(ops->vidioc_g_fmt_sliced_vbi_cap))
|
|
ret = ops->vidioc_g_fmt_sliced_vbi_cap(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
|
|
if (likely(ops->vidioc_g_fmt_sliced_vbi_out))
|
|
ret = ops->vidioc_g_fmt_sliced_vbi_out(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_PRIVATE:
|
|
if (likely(ops->vidioc_g_fmt_type_private))
|
|
ret = ops->vidioc_g_fmt_type_private(file,
|
|
fh, f);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_S_FMT:
|
|
{
|
|
struct v4l2_format *f = (struct v4l2_format *)arg;
|
|
|
|
ret = -EINVAL;
|
|
|
|
/* FIXME: Should be one dump per type */
|
|
dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names));
|
|
|
|
switch (f->type) {
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
|
|
CLEAR_AFTER_FIELD(f, fmt.pix);
|
|
v4l_print_pix_fmt(vfd, &f->fmt.pix);
|
|
if (ops->vidioc_s_fmt_vid_cap)
|
|
ret = ops->vidioc_s_fmt_vid_cap(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
|
|
CLEAR_AFTER_FIELD(f, fmt.pix_mp);
|
|
v4l_print_pix_fmt_mplane(vfd, &f->fmt.pix_mp);
|
|
if (ops->vidioc_s_fmt_vid_cap_mplane)
|
|
ret = ops->vidioc_s_fmt_vid_cap_mplane(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
|
|
CLEAR_AFTER_FIELD(f, fmt.win);
|
|
if (ops->vidioc_s_fmt_vid_overlay)
|
|
ret = ops->vidioc_s_fmt_vid_overlay(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
|
|
CLEAR_AFTER_FIELD(f, fmt.pix);
|
|
v4l_print_pix_fmt(vfd, &f->fmt.pix);
|
|
if (ops->vidioc_s_fmt_vid_out)
|
|
ret = ops->vidioc_s_fmt_vid_out(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
|
|
CLEAR_AFTER_FIELD(f, fmt.pix_mp);
|
|
v4l_print_pix_fmt_mplane(vfd, &f->fmt.pix_mp);
|
|
if (ops->vidioc_s_fmt_vid_out_mplane)
|
|
ret = ops->vidioc_s_fmt_vid_out_mplane(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
|
|
CLEAR_AFTER_FIELD(f, fmt.win);
|
|
if (ops->vidioc_s_fmt_vid_out_overlay)
|
|
ret = ops->vidioc_s_fmt_vid_out_overlay(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_CAPTURE:
|
|
CLEAR_AFTER_FIELD(f, fmt.vbi);
|
|
if (likely(ops->vidioc_s_fmt_vbi_cap))
|
|
ret = ops->vidioc_s_fmt_vbi_cap(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_OUTPUT:
|
|
CLEAR_AFTER_FIELD(f, fmt.vbi);
|
|
if (likely(ops->vidioc_s_fmt_vbi_out))
|
|
ret = ops->vidioc_s_fmt_vbi_out(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
|
|
CLEAR_AFTER_FIELD(f, fmt.sliced);
|
|
if (likely(ops->vidioc_s_fmt_sliced_vbi_cap))
|
|
ret = ops->vidioc_s_fmt_sliced_vbi_cap(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
|
|
CLEAR_AFTER_FIELD(f, fmt.sliced);
|
|
if (likely(ops->vidioc_s_fmt_sliced_vbi_out))
|
|
ret = ops->vidioc_s_fmt_sliced_vbi_out(file,
|
|
fh, f);
|
|
|
|
break;
|
|
case V4L2_BUF_TYPE_PRIVATE:
|
|
/* CLEAR_AFTER_FIELD(f, fmt.raw_data); <- does nothing */
|
|
if (likely(ops->vidioc_s_fmt_type_private))
|
|
ret = ops->vidioc_s_fmt_type_private(file,
|
|
fh, f);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_TRY_FMT:
|
|
{
|
|
struct v4l2_format *f = (struct v4l2_format *)arg;
|
|
|
|
/* FIXME: Should be one dump per type */
|
|
dbgarg(cmd, "type=%s\n", prt_names(f->type,
|
|
v4l2_type_names));
|
|
ret = -EINVAL;
|
|
switch (f->type) {
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
|
|
CLEAR_AFTER_FIELD(f, fmt.pix);
|
|
if (ops->vidioc_try_fmt_vid_cap)
|
|
ret = ops->vidioc_try_fmt_vid_cap(file, fh, f);
|
|
if (!ret)
|
|
v4l_print_pix_fmt(vfd, &f->fmt.pix);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
|
|
CLEAR_AFTER_FIELD(f, fmt.pix_mp);
|
|
if (ops->vidioc_try_fmt_vid_cap_mplane)
|
|
ret = ops->vidioc_try_fmt_vid_cap_mplane(file,
|
|
fh, f);
|
|
if (!ret)
|
|
v4l_print_pix_fmt_mplane(vfd, &f->fmt.pix_mp);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
|
|
CLEAR_AFTER_FIELD(f, fmt.win);
|
|
if (likely(ops->vidioc_try_fmt_vid_overlay))
|
|
ret = ops->vidioc_try_fmt_vid_overlay(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
|
|
CLEAR_AFTER_FIELD(f, fmt.pix);
|
|
if (ops->vidioc_try_fmt_vid_out)
|
|
ret = ops->vidioc_try_fmt_vid_out(file, fh, f);
|
|
if (!ret)
|
|
v4l_print_pix_fmt(vfd, &f->fmt.pix);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
|
|
CLEAR_AFTER_FIELD(f, fmt.pix_mp);
|
|
if (ops->vidioc_try_fmt_vid_out_mplane)
|
|
ret = ops->vidioc_try_fmt_vid_out_mplane(file,
|
|
fh, f);
|
|
if (!ret)
|
|
v4l_print_pix_fmt_mplane(vfd, &f->fmt.pix_mp);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
|
|
CLEAR_AFTER_FIELD(f, fmt.win);
|
|
if (likely(ops->vidioc_try_fmt_vid_out_overlay))
|
|
ret = ops->vidioc_try_fmt_vid_out_overlay(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_CAPTURE:
|
|
CLEAR_AFTER_FIELD(f, fmt.vbi);
|
|
if (likely(ops->vidioc_try_fmt_vbi_cap))
|
|
ret = ops->vidioc_try_fmt_vbi_cap(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_OUTPUT:
|
|
CLEAR_AFTER_FIELD(f, fmt.vbi);
|
|
if (likely(ops->vidioc_try_fmt_vbi_out))
|
|
ret = ops->vidioc_try_fmt_vbi_out(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
|
|
CLEAR_AFTER_FIELD(f, fmt.sliced);
|
|
if (likely(ops->vidioc_try_fmt_sliced_vbi_cap))
|
|
ret = ops->vidioc_try_fmt_sliced_vbi_cap(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
|
|
CLEAR_AFTER_FIELD(f, fmt.sliced);
|
|
if (likely(ops->vidioc_try_fmt_sliced_vbi_out))
|
|
ret = ops->vidioc_try_fmt_sliced_vbi_out(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_PRIVATE:
|
|
/* CLEAR_AFTER_FIELD(f, fmt.raw_data); <- does nothing */
|
|
if (likely(ops->vidioc_try_fmt_type_private))
|
|
ret = ops->vidioc_try_fmt_type_private(file,
|
|
fh, f);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
/* FIXME: Those buf reqs could be handled here,
|
|
with some changes on videobuf to allow its header to be included at
|
|
videodev2.h or being merged at videodev2.
|
|
*/
|
|
case VIDIOC_REQBUFS:
|
|
{
|
|
struct v4l2_requestbuffers *p = arg;
|
|
|
|
ret = check_fmt(ops, p->type);
|
|
if (ret)
|
|
break;
|
|
|
|
if (p->type < V4L2_BUF_TYPE_PRIVATE)
|
|
CLEAR_AFTER_FIELD(p, memory);
|
|
|
|
ret = ops->vidioc_reqbufs(file, fh, p);
|
|
dbgarg(cmd, "count=%d, type=%s, memory=%s\n",
|
|
p->count,
|
|
prt_names(p->type, v4l2_type_names),
|
|
prt_names(p->memory, v4l2_memory_names));
|
|
break;
|
|
}
|
|
case VIDIOC_QUERYBUF:
|
|
{
|
|
struct v4l2_buffer *p = arg;
|
|
|
|
ret = check_fmt(ops, p->type);
|
|
if (ret)
|
|
break;
|
|
|
|
ret = ops->vidioc_querybuf(file, fh, p);
|
|
if (!ret)
|
|
dbgbuf(cmd, vfd, p);
|
|
break;
|
|
}
|
|
case VIDIOC_QBUF:
|
|
{
|
|
struct v4l2_buffer *p = arg;
|
|
|
|
ret = check_fmt(ops, p->type);
|
|
if (ret)
|
|
break;
|
|
|
|
ret = ops->vidioc_qbuf(file, fh, p);
|
|
if (!ret)
|
|
dbgbuf(cmd, vfd, p);
|
|
break;
|
|
}
|
|
case VIDIOC_DQBUF:
|
|
{
|
|
struct v4l2_buffer *p = arg;
|
|
|
|
ret = check_fmt(ops, p->type);
|
|
if (ret)
|
|
break;
|
|
|
|
ret = ops->vidioc_dqbuf(file, fh, p);
|
|
if (!ret)
|
|
dbgbuf(cmd, vfd, p);
|
|
break;
|
|
}
|
|
case VIDIOC_OVERLAY:
|
|
{
|
|
int *i = arg;
|
|
|
|
dbgarg(cmd, "value=%d\n", *i);
|
|
ret = ops->vidioc_overlay(file, fh, *i);
|
|
break;
|
|
}
|
|
case VIDIOC_G_FBUF:
|
|
{
|
|
struct v4l2_framebuffer *p = arg;
|
|
|
|
ret = ops->vidioc_g_fbuf(file, fh, arg);
|
|
if (!ret) {
|
|
dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n",
|
|
p->capability, p->flags,
|
|
(unsigned long)p->base);
|
|
v4l_print_pix_fmt(vfd, &p->fmt);
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_S_FBUF:
|
|
{
|
|
struct v4l2_framebuffer *p = arg;
|
|
|
|
dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n",
|
|
p->capability, p->flags, (unsigned long)p->base);
|
|
v4l_print_pix_fmt(vfd, &p->fmt);
|
|
ret = ops->vidioc_s_fbuf(file, fh, arg);
|
|
break;
|
|
}
|
|
case VIDIOC_STREAMON:
|
|
{
|
|
enum v4l2_buf_type i = *(int *)arg;
|
|
|
|
dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names));
|
|
ret = ops->vidioc_streamon(file, fh, i);
|
|
break;
|
|
}
|
|
case VIDIOC_STREAMOFF:
|
|
{
|
|
enum v4l2_buf_type i = *(int *)arg;
|
|
|
|
dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names));
|
|
ret = ops->vidioc_streamoff(file, fh, i);
|
|
break;
|
|
}
|
|
/* ---------- tv norms ---------- */
|
|
case VIDIOC_ENUMSTD:
|
|
{
|
|
struct v4l2_standard *p = arg;
|
|
v4l2_std_id id = vfd->tvnorms, curr_id = 0;
|
|
unsigned int index = p->index, i, j = 0;
|
|
const char *descr = "";
|
|
|
|
if (id == 0)
|
|
break;
|
|
ret = -EINVAL;
|
|
|
|
/* Return norm array in a canonical way */
|
|
for (i = 0; i <= index && id; i++) {
|
|
/* last std value in the standards array is 0, so this
|
|
while always ends there since (id & 0) == 0. */
|
|
while ((id & standards[j].std) != standards[j].std)
|
|
j++;
|
|
curr_id = standards[j].std;
|
|
descr = standards[j].descr;
|
|
j++;
|
|
if (curr_id == 0)
|
|
break;
|
|
if (curr_id != V4L2_STD_PAL &&
|
|
curr_id != V4L2_STD_SECAM &&
|
|
curr_id != V4L2_STD_NTSC)
|
|
id &= ~curr_id;
|
|
}
|
|
if (i <= index)
|
|
break;
|
|
|
|
v4l2_video_std_construct(p, curr_id, descr);
|
|
|
|
dbgarg(cmd, "index=%d, id=0x%Lx, name=%s, fps=%d/%d, "
|
|
"framelines=%d\n", p->index,
|
|
(unsigned long long)p->id, p->name,
|
|
p->frameperiod.numerator,
|
|
p->frameperiod.denominator,
|
|
p->framelines);
|
|
|
|
ret = 0;
|
|
break;
|
|
}
|
|
case VIDIOC_G_STD:
|
|
{
|
|
v4l2_std_id *id = arg;
|
|
|
|
/* Calls the specific handler */
|
|
if (ops->vidioc_g_std)
|
|
ret = ops->vidioc_g_std(file, fh, id);
|
|
else if (vfd->current_norm) {
|
|
ret = 0;
|
|
*id = vfd->current_norm;
|
|
}
|
|
|
|
if (likely(!ret))
|
|
dbgarg(cmd, "std=0x%08Lx\n", (long long unsigned)*id);
|
|
break;
|
|
}
|
|
case VIDIOC_S_STD:
|
|
{
|
|
v4l2_std_id *id = arg, norm;
|
|
|
|
dbgarg(cmd, "std=%08Lx\n", (long long unsigned)*id);
|
|
|
|
ret = -EINVAL;
|
|
norm = (*id) & vfd->tvnorms;
|
|
if (vfd->tvnorms && !norm) /* Check if std is supported */
|
|
break;
|
|
|
|
/* Calls the specific handler */
|
|
ret = ops->vidioc_s_std(file, fh, &norm);
|
|
|
|
/* Updates standard information */
|
|
if (ret >= 0)
|
|
vfd->current_norm = norm;
|
|
break;
|
|
}
|
|
case VIDIOC_QUERYSTD:
|
|
{
|
|
v4l2_std_id *p = arg;
|
|
|
|
/*
|
|
* If nothing detected, it should return all supported
|
|
* Drivers just need to mask the std argument, in order
|
|
* to remove the standards that don't apply from the mask.
|
|
* This means that tuners, audio and video decoders can join
|
|
* their efforts to improve the standards detection
|
|
*/
|
|
*p = vfd->tvnorms;
|
|
ret = ops->vidioc_querystd(file, fh, arg);
|
|
if (!ret)
|
|
dbgarg(cmd, "detected std=%08Lx\n",
|
|
(unsigned long long)*p);
|
|
break;
|
|
}
|
|
/* ------ input switching ---------- */
|
|
/* FIXME: Inputs can be handled inside videodev2 */
|
|
case VIDIOC_ENUMINPUT:
|
|
{
|
|
struct v4l2_input *p = arg;
|
|
|
|
/*
|
|
* We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
|
|
* CAP_STD here based on ioctl handler provided by the
|
|
* driver. If the driver doesn't support these
|
|
* for a specific input, it must override these flags.
|
|
*/
|
|
if (ops->vidioc_s_std)
|
|
p->capabilities |= V4L2_IN_CAP_STD;
|
|
if (ops->vidioc_s_dv_preset)
|
|
p->capabilities |= V4L2_IN_CAP_PRESETS;
|
|
if (ops->vidioc_s_dv_timings)
|
|
p->capabilities |= V4L2_IN_CAP_CUSTOM_TIMINGS;
|
|
|
|
ret = ops->vidioc_enum_input(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "index=%d, name=%s, type=%d, "
|
|
"audioset=%d, "
|
|
"tuner=%d, std=%08Lx, status=%d\n",
|
|
p->index, p->name, p->type, p->audioset,
|
|
p->tuner,
|
|
(unsigned long long)p->std,
|
|
p->status);
|
|
break;
|
|
}
|
|
case VIDIOC_G_INPUT:
|
|
{
|
|
unsigned int *i = arg;
|
|
|
|
ret = ops->vidioc_g_input(file, fh, i);
|
|
if (!ret)
|
|
dbgarg(cmd, "value=%d\n", *i);
|
|
break;
|
|
}
|
|
case VIDIOC_S_INPUT:
|
|
{
|
|
unsigned int *i = arg;
|
|
|
|
dbgarg(cmd, "value=%d\n", *i);
|
|
ret = ops->vidioc_s_input(file, fh, *i);
|
|
break;
|
|
}
|
|
|
|
/* ------ output switching ---------- */
|
|
case VIDIOC_ENUMOUTPUT:
|
|
{
|
|
struct v4l2_output *p = arg;
|
|
|
|
/*
|
|
* We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
|
|
* CAP_STD here based on ioctl handler provided by the
|
|
* driver. If the driver doesn't support these
|
|
* for a specific output, it must override these flags.
|
|
*/
|
|
if (ops->vidioc_s_std)
|
|
p->capabilities |= V4L2_OUT_CAP_STD;
|
|
if (ops->vidioc_s_dv_preset)
|
|
p->capabilities |= V4L2_OUT_CAP_PRESETS;
|
|
if (ops->vidioc_s_dv_timings)
|
|
p->capabilities |= V4L2_OUT_CAP_CUSTOM_TIMINGS;
|
|
|
|
ret = ops->vidioc_enum_output(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "index=%d, name=%s, type=%d, "
|
|
"audioset=0x%x, "
|
|
"modulator=%d, std=0x%08Lx\n",
|
|
p->index, p->name, p->type, p->audioset,
|
|
p->modulator, (unsigned long long)p->std);
|
|
break;
|
|
}
|
|
case VIDIOC_G_OUTPUT:
|
|
{
|
|
unsigned int *i = arg;
|
|
|
|
ret = ops->vidioc_g_output(file, fh, i);
|
|
if (!ret)
|
|
dbgarg(cmd, "value=%d\n", *i);
|
|
break;
|
|
}
|
|
case VIDIOC_S_OUTPUT:
|
|
{
|
|
unsigned int *i = arg;
|
|
|
|
dbgarg(cmd, "value=%d\n", *i);
|
|
ret = ops->vidioc_s_output(file, fh, *i);
|
|
break;
|
|
}
|
|
|
|
/* --- controls ---------------------------------------------- */
|
|
case VIDIOC_QUERYCTRL:
|
|
{
|
|
struct v4l2_queryctrl *p = arg;
|
|
|
|
if (vfh && vfh->ctrl_handler)
|
|
ret = v4l2_queryctrl(vfh->ctrl_handler, p);
|
|
else if (vfd->ctrl_handler)
|
|
ret = v4l2_queryctrl(vfd->ctrl_handler, p);
|
|
else if (ops->vidioc_queryctrl)
|
|
ret = ops->vidioc_queryctrl(file, fh, p);
|
|
else
|
|
break;
|
|
if (!ret)
|
|
dbgarg(cmd, "id=0x%x, type=%d, name=%s, min/max=%d/%d, "
|
|
"step=%d, default=%d, flags=0x%08x\n",
|
|
p->id, p->type, p->name,
|
|
p->minimum, p->maximum,
|
|
p->step, p->default_value, p->flags);
|
|
else
|
|
dbgarg(cmd, "id=0x%x\n", p->id);
|
|
break;
|
|
}
|
|
case VIDIOC_G_CTRL:
|
|
{
|
|
struct v4l2_control *p = arg;
|
|
|
|
if (vfh && vfh->ctrl_handler)
|
|
ret = v4l2_g_ctrl(vfh->ctrl_handler, p);
|
|
else if (vfd->ctrl_handler)
|
|
ret = v4l2_g_ctrl(vfd->ctrl_handler, p);
|
|
else if (ops->vidioc_g_ctrl)
|
|
ret = ops->vidioc_g_ctrl(file, fh, p);
|
|
else if (ops->vidioc_g_ext_ctrls) {
|
|
struct v4l2_ext_controls ctrls;
|
|
struct v4l2_ext_control ctrl;
|
|
|
|
ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
|
|
ctrls.count = 1;
|
|
ctrls.controls = &ctrl;
|
|
ctrl.id = p->id;
|
|
ctrl.value = p->value;
|
|
if (check_ext_ctrls(&ctrls, 1)) {
|
|
ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
|
|
if (ret == 0)
|
|
p->value = ctrl.value;
|
|
}
|
|
} else
|
|
break;
|
|
if (!ret)
|
|
dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value);
|
|
else
|
|
dbgarg(cmd, "id=0x%x\n", p->id);
|
|
break;
|
|
}
|
|
case VIDIOC_S_CTRL:
|
|
{
|
|
struct v4l2_control *p = arg;
|
|
struct v4l2_ext_controls ctrls;
|
|
struct v4l2_ext_control ctrl;
|
|
|
|
if (!(vfh && vfh->ctrl_handler) && !vfd->ctrl_handler &&
|
|
!ops->vidioc_s_ctrl && !ops->vidioc_s_ext_ctrls)
|
|
break;
|
|
|
|
dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value);
|
|
|
|
if (vfh && vfh->ctrl_handler) {
|
|
ret = v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
|
|
break;
|
|
}
|
|
if (vfd->ctrl_handler) {
|
|
ret = v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
|
|
break;
|
|
}
|
|
if (ops->vidioc_s_ctrl) {
|
|
ret = ops->vidioc_s_ctrl(file, fh, p);
|
|
break;
|
|
}
|
|
if (!ops->vidioc_s_ext_ctrls)
|
|
break;
|
|
|
|
ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
|
|
ctrls.count = 1;
|
|
ctrls.controls = &ctrl;
|
|
ctrl.id = p->id;
|
|
ctrl.value = p->value;
|
|
if (check_ext_ctrls(&ctrls, 1))
|
|
ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
|
|
else
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
case VIDIOC_G_EXT_CTRLS:
|
|
{
|
|
struct v4l2_ext_controls *p = arg;
|
|
|
|
p->error_idx = p->count;
|
|
if (vfh && vfh->ctrl_handler)
|
|
ret = v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
|
|
else if (vfd->ctrl_handler)
|
|
ret = v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
|
|
else if (ops->vidioc_g_ext_ctrls)
|
|
ret = check_ext_ctrls(p, 0) ?
|
|
ops->vidioc_g_ext_ctrls(file, fh, p) :
|
|
-EINVAL;
|
|
else
|
|
break;
|
|
v4l_print_ext_ctrls(cmd, vfd, p, !ret);
|
|
break;
|
|
}
|
|
case VIDIOC_S_EXT_CTRLS:
|
|
{
|
|
struct v4l2_ext_controls *p = arg;
|
|
|
|
p->error_idx = p->count;
|
|
if (!(vfh && vfh->ctrl_handler) && !vfd->ctrl_handler &&
|
|
!ops->vidioc_s_ext_ctrls)
|
|
break;
|
|
v4l_print_ext_ctrls(cmd, vfd, p, 1);
|
|
if (vfh && vfh->ctrl_handler)
|
|
ret = v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
|
|
else if (vfd->ctrl_handler)
|
|
ret = v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
|
|
else if (check_ext_ctrls(p, 0))
|
|
ret = ops->vidioc_s_ext_ctrls(file, fh, p);
|
|
else
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
case VIDIOC_TRY_EXT_CTRLS:
|
|
{
|
|
struct v4l2_ext_controls *p = arg;
|
|
|
|
p->error_idx = p->count;
|
|
if (!(vfh && vfh->ctrl_handler) && !vfd->ctrl_handler &&
|
|
!ops->vidioc_try_ext_ctrls)
|
|
break;
|
|
v4l_print_ext_ctrls(cmd, vfd, p, 1);
|
|
if (vfh && vfh->ctrl_handler)
|
|
ret = v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
|
|
else if (vfd->ctrl_handler)
|
|
ret = v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
|
|
else if (check_ext_ctrls(p, 0))
|
|
ret = ops->vidioc_try_ext_ctrls(file, fh, p);
|
|
else
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
case VIDIOC_QUERYMENU:
|
|
{
|
|
struct v4l2_querymenu *p = arg;
|
|
|
|
if (vfh && vfh->ctrl_handler)
|
|
ret = v4l2_querymenu(vfh->ctrl_handler, p);
|
|
else if (vfd->ctrl_handler)
|
|
ret = v4l2_querymenu(vfd->ctrl_handler, p);
|
|
else if (ops->vidioc_querymenu)
|
|
ret = ops->vidioc_querymenu(file, fh, p);
|
|
else
|
|
break;
|
|
if (!ret)
|
|
dbgarg(cmd, "id=0x%x, index=%d, name=%s\n",
|
|
p->id, p->index, p->name);
|
|
else
|
|
dbgarg(cmd, "id=0x%x, index=%d\n",
|
|
p->id, p->index);
|
|
break;
|
|
}
|
|
/* --- audio ---------------------------------------------- */
|
|
case VIDIOC_ENUMAUDIO:
|
|
{
|
|
struct v4l2_audio *p = arg;
|
|
|
|
ret = ops->vidioc_enumaudio(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "index=%d, name=%s, capability=0x%x, "
|
|
"mode=0x%x\n", p->index, p->name,
|
|
p->capability, p->mode);
|
|
else
|
|
dbgarg(cmd, "index=%d\n", p->index);
|
|
break;
|
|
}
|
|
case VIDIOC_G_AUDIO:
|
|
{
|
|
struct v4l2_audio *p = arg;
|
|
|
|
ret = ops->vidioc_g_audio(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "index=%d, name=%s, capability=0x%x, "
|
|
"mode=0x%x\n", p->index,
|
|
p->name, p->capability, p->mode);
|
|
else
|
|
dbgarg(cmd, "index=%d\n", p->index);
|
|
break;
|
|
}
|
|
case VIDIOC_S_AUDIO:
|
|
{
|
|
struct v4l2_audio *p = arg;
|
|
|
|
dbgarg(cmd, "index=%d, name=%s, capability=0x%x, "
|
|
"mode=0x%x\n", p->index, p->name,
|
|
p->capability, p->mode);
|
|
ret = ops->vidioc_s_audio(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_ENUMAUDOUT:
|
|
{
|
|
struct v4l2_audioout *p = arg;
|
|
|
|
dbgarg(cmd, "Enum for index=%d\n", p->index);
|
|
ret = ops->vidioc_enumaudout(file, fh, p);
|
|
if (!ret)
|
|
dbgarg2("index=%d, name=%s, capability=%d, "
|
|
"mode=%d\n", p->index, p->name,
|
|
p->capability, p->mode);
|
|
break;
|
|
}
|
|
case VIDIOC_G_AUDOUT:
|
|
{
|
|
struct v4l2_audioout *p = arg;
|
|
|
|
ret = ops->vidioc_g_audout(file, fh, p);
|
|
if (!ret)
|
|
dbgarg2("index=%d, name=%s, capability=%d, "
|
|
"mode=%d\n", p->index, p->name,
|
|
p->capability, p->mode);
|
|
break;
|
|
}
|
|
case VIDIOC_S_AUDOUT:
|
|
{
|
|
struct v4l2_audioout *p = arg;
|
|
|
|
dbgarg(cmd, "index=%d, name=%s, capability=%d, "
|
|
"mode=%d\n", p->index, p->name,
|
|
p->capability, p->mode);
|
|
|
|
ret = ops->vidioc_s_audout(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_MODULATOR:
|
|
{
|
|
struct v4l2_modulator *p = arg;
|
|
|
|
ret = ops->vidioc_g_modulator(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "index=%d, name=%s, "
|
|
"capability=%d, rangelow=%d,"
|
|
" rangehigh=%d, txsubchans=%d\n",
|
|
p->index, p->name, p->capability,
|
|
p->rangelow, p->rangehigh,
|
|
p->txsubchans);
|
|
break;
|
|
}
|
|
case VIDIOC_S_MODULATOR:
|
|
{
|
|
struct v4l2_modulator *p = arg;
|
|
|
|
dbgarg(cmd, "index=%d, name=%s, capability=%d, "
|
|
"rangelow=%d, rangehigh=%d, txsubchans=%d\n",
|
|
p->index, p->name, p->capability, p->rangelow,
|
|
p->rangehigh, p->txsubchans);
|
|
ret = ops->vidioc_s_modulator(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_CROP:
|
|
{
|
|
struct v4l2_crop *p = arg;
|
|
|
|
dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
|
|
|
|
if (ops->vidioc_g_crop) {
|
|
ret = ops->vidioc_g_crop(file, fh, p);
|
|
} else {
|
|
/* simulate capture crop using selection api */
|
|
struct v4l2_selection s = {
|
|
.type = p->type,
|
|
};
|
|
|
|
/* crop means compose for output devices */
|
|
if (V4L2_TYPE_IS_OUTPUT(p->type))
|
|
s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
|
|
else
|
|
s.target = V4L2_SEL_TGT_CROP_ACTIVE;
|
|
|
|
ret = ops->vidioc_g_selection(file, fh, &s);
|
|
|
|
/* copying results to old structure on success */
|
|
if (!ret)
|
|
p->c = s.r;
|
|
}
|
|
|
|
if (!ret)
|
|
dbgrect(vfd, "", &p->c);
|
|
break;
|
|
}
|
|
case VIDIOC_S_CROP:
|
|
{
|
|
struct v4l2_crop *p = arg;
|
|
|
|
dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
|
|
dbgrect(vfd, "", &p->c);
|
|
|
|
if (ops->vidioc_s_crop) {
|
|
ret = ops->vidioc_s_crop(file, fh, p);
|
|
} else {
|
|
/* simulate capture crop using selection api */
|
|
struct v4l2_selection s = {
|
|
.type = p->type,
|
|
.r = p->c,
|
|
};
|
|
|
|
/* crop means compose for output devices */
|
|
if (V4L2_TYPE_IS_OUTPUT(p->type))
|
|
s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
|
|
else
|
|
s.target = V4L2_SEL_TGT_CROP_ACTIVE;
|
|
|
|
ret = ops->vidioc_s_selection(file, fh, &s);
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_G_SELECTION:
|
|
{
|
|
struct v4l2_selection *p = arg;
|
|
|
|
dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
|
|
|
|
ret = ops->vidioc_g_selection(file, fh, p);
|
|
if (!ret)
|
|
dbgrect(vfd, "", &p->r);
|
|
break;
|
|
}
|
|
case VIDIOC_S_SELECTION:
|
|
{
|
|
struct v4l2_selection *p = arg;
|
|
|
|
|
|
dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
|
|
dbgrect(vfd, "", &p->r);
|
|
|
|
ret = ops->vidioc_s_selection(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_CROPCAP:
|
|
{
|
|
struct v4l2_cropcap *p = arg;
|
|
|
|
/*FIXME: Should also show v4l2_fract pixelaspect */
|
|
dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
|
|
if (ops->vidioc_cropcap) {
|
|
ret = ops->vidioc_cropcap(file, fh, p);
|
|
} else {
|
|
struct v4l2_selection s = { .type = p->type };
|
|
|
|
/* obtaining bounds */
|
|
if (V4L2_TYPE_IS_OUTPUT(p->type))
|
|
s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
|
|
else
|
|
s.target = V4L2_SEL_TGT_CROP_BOUNDS;
|
|
|
|
ret = ops->vidioc_g_selection(file, fh, &s);
|
|
if (ret)
|
|
break;
|
|
p->bounds = s.r;
|
|
|
|
/* obtaining defrect */
|
|
if (V4L2_TYPE_IS_OUTPUT(p->type))
|
|
s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
|
|
else
|
|
s.target = V4L2_SEL_TGT_CROP_DEFAULT;
|
|
|
|
ret = ops->vidioc_g_selection(file, fh, &s);
|
|
if (ret)
|
|
break;
|
|
p->defrect = s.r;
|
|
|
|
/* setting trivial pixelaspect */
|
|
p->pixelaspect.numerator = 1;
|
|
p->pixelaspect.denominator = 1;
|
|
}
|
|
|
|
if (!ret) {
|
|
dbgrect(vfd, "bounds ", &p->bounds);
|
|
dbgrect(vfd, "defrect ", &p->defrect);
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_G_JPEGCOMP:
|
|
{
|
|
struct v4l2_jpegcompression *p = arg;
|
|
|
|
ret = ops->vidioc_g_jpegcomp(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "quality=%d, APPn=%d, "
|
|
"APP_len=%d, COM_len=%d, "
|
|
"jpeg_markers=%d\n",
|
|
p->quality, p->APPn, p->APP_len,
|
|
p->COM_len, p->jpeg_markers);
|
|
break;
|
|
}
|
|
case VIDIOC_S_JPEGCOMP:
|
|
{
|
|
struct v4l2_jpegcompression *p = arg;
|
|
|
|
dbgarg(cmd, "quality=%d, APPn=%d, APP_len=%d, "
|
|
"COM_len=%d, jpeg_markers=%d\n",
|
|
p->quality, p->APPn, p->APP_len,
|
|
p->COM_len, p->jpeg_markers);
|
|
ret = ops->vidioc_s_jpegcomp(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_ENC_INDEX:
|
|
{
|
|
struct v4l2_enc_idx *p = arg;
|
|
|
|
ret = ops->vidioc_g_enc_index(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "entries=%d, entries_cap=%d\n",
|
|
p->entries, p->entries_cap);
|
|
break;
|
|
}
|
|
case VIDIOC_ENCODER_CMD:
|
|
{
|
|
struct v4l2_encoder_cmd *p = arg;
|
|
|
|
ret = ops->vidioc_encoder_cmd(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
|
|
break;
|
|
}
|
|
case VIDIOC_TRY_ENCODER_CMD:
|
|
{
|
|
struct v4l2_encoder_cmd *p = arg;
|
|
|
|
ret = ops->vidioc_try_encoder_cmd(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
|
|
break;
|
|
}
|
|
case VIDIOC_DECODER_CMD:
|
|
{
|
|
struct v4l2_decoder_cmd *p = arg;
|
|
|
|
ret = ops->vidioc_decoder_cmd(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
|
|
break;
|
|
}
|
|
case VIDIOC_TRY_DECODER_CMD:
|
|
{
|
|
struct v4l2_decoder_cmd *p = arg;
|
|
|
|
ret = ops->vidioc_try_decoder_cmd(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
|
|
break;
|
|
}
|
|
case VIDIOC_G_PARM:
|
|
{
|
|
struct v4l2_streamparm *p = arg;
|
|
|
|
if (ops->vidioc_g_parm) {
|
|
ret = check_fmt(ops, p->type);
|
|
if (ret)
|
|
break;
|
|
ret = ops->vidioc_g_parm(file, fh, p);
|
|
} else {
|
|
v4l2_std_id std = vfd->current_norm;
|
|
|
|
ret = -EINVAL;
|
|
if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
break;
|
|
|
|
ret = 0;
|
|
if (ops->vidioc_g_std)
|
|
ret = ops->vidioc_g_std(file, fh, &std);
|
|
if (ret == 0)
|
|
v4l2_video_std_frame_period(std,
|
|
&p->parm.capture.timeperframe);
|
|
}
|
|
|
|
dbgarg(cmd, "type=%d\n", p->type);
|
|
break;
|
|
}
|
|
case VIDIOC_S_PARM:
|
|
{
|
|
struct v4l2_streamparm *p = arg;
|
|
|
|
ret = check_fmt(ops, p->type);
|
|
if (ret)
|
|
break;
|
|
|
|
dbgarg(cmd, "type=%d\n", p->type);
|
|
ret = ops->vidioc_s_parm(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_TUNER:
|
|
{
|
|
struct v4l2_tuner *p = arg;
|
|
|
|
p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
|
|
V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
|
|
ret = ops->vidioc_g_tuner(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "index=%d, name=%s, type=%d, "
|
|
"capability=0x%x, rangelow=%d, "
|
|
"rangehigh=%d, signal=%d, afc=%d, "
|
|
"rxsubchans=0x%x, audmode=%d\n",
|
|
p->index, p->name, p->type,
|
|
p->capability, p->rangelow,
|
|
p->rangehigh, p->signal, p->afc,
|
|
p->rxsubchans, p->audmode);
|
|
break;
|
|
}
|
|
case VIDIOC_S_TUNER:
|
|
{
|
|
struct v4l2_tuner *p = arg;
|
|
|
|
p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
|
|
V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
|
|
dbgarg(cmd, "index=%d, name=%s, type=%d, "
|
|
"capability=0x%x, rangelow=%d, "
|
|
"rangehigh=%d, signal=%d, afc=%d, "
|
|
"rxsubchans=0x%x, audmode=%d\n",
|
|
p->index, p->name, p->type,
|
|
p->capability, p->rangelow,
|
|
p->rangehigh, p->signal, p->afc,
|
|
p->rxsubchans, p->audmode);
|
|
ret = ops->vidioc_s_tuner(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_FREQUENCY:
|
|
{
|
|
struct v4l2_frequency *p = arg;
|
|
|
|
p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
|
|
V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
|
|
ret = ops->vidioc_g_frequency(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n",
|
|
p->tuner, p->type, p->frequency);
|
|
break;
|
|
}
|
|
case VIDIOC_S_FREQUENCY:
|
|
{
|
|
struct v4l2_frequency *p = arg;
|
|
enum v4l2_tuner_type type;
|
|
|
|
type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
|
|
V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
|
|
dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n",
|
|
p->tuner, p->type, p->frequency);
|
|
if (p->type != type)
|
|
ret = -EINVAL;
|
|
else
|
|
ret = ops->vidioc_s_frequency(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_SLICED_VBI_CAP:
|
|
{
|
|
struct v4l2_sliced_vbi_cap *p = arg;
|
|
|
|
/* Clear up to type, everything after type is zerod already */
|
|
memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
|
|
|
|
dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
|
|
ret = ops->vidioc_g_sliced_vbi_cap(file, fh, p);
|
|
if (!ret)
|
|
dbgarg2("service_set=%d\n", p->service_set);
|
|
break;
|
|
}
|
|
case VIDIOC_LOG_STATUS:
|
|
{
|
|
if (vfd->v4l2_dev)
|
|
pr_info("%s: ================= START STATUS =================\n",
|
|
vfd->v4l2_dev->name);
|
|
ret = ops->vidioc_log_status(file, fh);
|
|
if (vfd->v4l2_dev)
|
|
pr_info("%s: ================== END STATUS ==================\n",
|
|
vfd->v4l2_dev->name);
|
|
break;
|
|
}
|
|
case VIDIOC_DBG_G_REGISTER:
|
|
{
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
struct v4l2_dbg_register *p = arg;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
ret = -EPERM;
|
|
else
|
|
ret = ops->vidioc_g_register(file, fh, p);
|
|
#endif
|
|
break;
|
|
}
|
|
case VIDIOC_DBG_S_REGISTER:
|
|
{
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
struct v4l2_dbg_register *p = arg;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
ret = -EPERM;
|
|
else
|
|
ret = ops->vidioc_s_register(file, fh, p);
|
|
#endif
|
|
break;
|
|
}
|
|
case VIDIOC_DBG_G_CHIP_IDENT:
|
|
{
|
|
struct v4l2_dbg_chip_ident *p = arg;
|
|
|
|
p->ident = V4L2_IDENT_NONE;
|
|
p->revision = 0;
|
|
ret = ops->vidioc_g_chip_ident(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision);
|
|
break;
|
|
}
|
|
case VIDIOC_S_HW_FREQ_SEEK:
|
|
{
|
|
struct v4l2_hw_freq_seek *p = arg;
|
|
enum v4l2_tuner_type type;
|
|
|
|
type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
|
|
V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
|
|
dbgarg(cmd,
|
|
"tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u\n",
|
|
p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing);
|
|
if (p->type != type)
|
|
ret = -EINVAL;
|
|
else
|
|
ret = ops->vidioc_s_hw_freq_seek(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_ENUM_FRAMESIZES:
|
|
{
|
|
struct v4l2_frmsizeenum *p = arg;
|
|
|
|
ret = ops->vidioc_enum_framesizes(file, fh, p);
|
|
dbgarg(cmd,
|
|
"index=%d, pixelformat=%c%c%c%c, type=%d ",
|
|
p->index,
|
|
(p->pixel_format & 0xff),
|
|
(p->pixel_format >> 8) & 0xff,
|
|
(p->pixel_format >> 16) & 0xff,
|
|
(p->pixel_format >> 24) & 0xff,
|
|
p->type);
|
|
switch (p->type) {
|
|
case V4L2_FRMSIZE_TYPE_DISCRETE:
|
|
dbgarg3("width = %d, height=%d\n",
|
|
p->discrete.width, p->discrete.height);
|
|
break;
|
|
case V4L2_FRMSIZE_TYPE_STEPWISE:
|
|
dbgarg3("min %dx%d, max %dx%d, step %dx%d\n",
|
|
p->stepwise.min_width, p->stepwise.min_height,
|
|
p->stepwise.step_width, p->stepwise.step_height,
|
|
p->stepwise.max_width, p->stepwise.max_height);
|
|
break;
|
|
case V4L2_FRMSIZE_TYPE_CONTINUOUS:
|
|
dbgarg3("continuous\n");
|
|
break;
|
|
default:
|
|
dbgarg3("- Unknown type!\n");
|
|
}
|
|
|
|
break;
|
|
}
|
|
case VIDIOC_ENUM_FRAMEINTERVALS:
|
|
{
|
|
struct v4l2_frmivalenum *p = arg;
|
|
|
|
ret = ops->vidioc_enum_frameintervals(file, fh, p);
|
|
dbgarg(cmd,
|
|
"index=%d, pixelformat=%d, width=%d, height=%d, type=%d ",
|
|
p->index, p->pixel_format,
|
|
p->width, p->height, p->type);
|
|
switch (p->type) {
|
|
case V4L2_FRMIVAL_TYPE_DISCRETE:
|
|
dbgarg2("fps=%d/%d\n",
|
|
p->discrete.numerator,
|
|
p->discrete.denominator);
|
|
break;
|
|
case V4L2_FRMIVAL_TYPE_STEPWISE:
|
|
dbgarg2("min=%d/%d, max=%d/%d, step=%d/%d\n",
|
|
p->stepwise.min.numerator,
|
|
p->stepwise.min.denominator,
|
|
p->stepwise.max.numerator,
|
|
p->stepwise.max.denominator,
|
|
p->stepwise.step.numerator,
|
|
p->stepwise.step.denominator);
|
|
break;
|
|
case V4L2_FRMIVAL_TYPE_CONTINUOUS:
|
|
dbgarg2("continuous\n");
|
|
break;
|
|
default:
|
|
dbgarg2("- Unknown type!\n");
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_ENUM_DV_PRESETS:
|
|
{
|
|
struct v4l2_dv_enum_preset *p = arg;
|
|
|
|
ret = ops->vidioc_enum_dv_presets(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd,
|
|
"index=%d, preset=%d, name=%s, width=%d,"
|
|
" height=%d ",
|
|
p->index, p->preset, p->name, p->width,
|
|
p->height);
|
|
break;
|
|
}
|
|
case VIDIOC_S_DV_PRESET:
|
|
{
|
|
struct v4l2_dv_preset *p = arg;
|
|
|
|
dbgarg(cmd, "preset=%d\n", p->preset);
|
|
ret = ops->vidioc_s_dv_preset(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_DV_PRESET:
|
|
{
|
|
struct v4l2_dv_preset *p = arg;
|
|
|
|
ret = ops->vidioc_g_dv_preset(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "preset=%d\n", p->preset);
|
|
break;
|
|
}
|
|
case VIDIOC_QUERY_DV_PRESET:
|
|
{
|
|
struct v4l2_dv_preset *p = arg;
|
|
|
|
ret = ops->vidioc_query_dv_preset(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "preset=%d\n", p->preset);
|
|
break;
|
|
}
|
|
case VIDIOC_S_DV_TIMINGS:
|
|
{
|
|
struct v4l2_dv_timings *p = arg;
|
|
|
|
dbgtimings(vfd, p);
|
|
switch (p->type) {
|
|
case V4L2_DV_BT_656_1120:
|
|
ret = ops->vidioc_s_dv_timings(file, fh, p);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_G_DV_TIMINGS:
|
|
{
|
|
struct v4l2_dv_timings *p = arg;
|
|
|
|
ret = ops->vidioc_g_dv_timings(file, fh, p);
|
|
if (!ret)
|
|
dbgtimings(vfd, p);
|
|
break;
|
|
}
|
|
case VIDIOC_ENUM_DV_TIMINGS:
|
|
{
|
|
struct v4l2_enum_dv_timings *p = arg;
|
|
|
|
if (!ops->vidioc_enum_dv_timings)
|
|
break;
|
|
|
|
ret = ops->vidioc_enum_dv_timings(file, fh, p);
|
|
if (!ret) {
|
|
dbgarg(cmd, "index=%d: ", p->index);
|
|
dbgtimings(vfd, &p->timings);
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_QUERY_DV_TIMINGS:
|
|
{
|
|
struct v4l2_dv_timings *p = arg;
|
|
|
|
if (!ops->vidioc_query_dv_timings)
|
|
break;
|
|
|
|
ret = ops->vidioc_query_dv_timings(file, fh, p);
|
|
if (!ret)
|
|
dbgtimings(vfd, p);
|
|
break;
|
|
}
|
|
case VIDIOC_DV_TIMINGS_CAP:
|
|
{
|
|
struct v4l2_dv_timings_cap *p = arg;
|
|
|
|
if (!ops->vidioc_dv_timings_cap)
|
|
break;
|
|
|
|
ret = ops->vidioc_dv_timings_cap(file, fh, p);
|
|
if (ret)
|
|
break;
|
|
switch (p->type) {
|
|
case V4L2_DV_BT_656_1120:
|
|
dbgarg(cmd,
|
|
"type=%d, width=%u-%u, height=%u-%u, "
|
|
"pixelclock=%llu-%llu, standards=%x, capabilities=%x ",
|
|
p->type,
|
|
p->bt.min_width, p->bt.max_width,
|
|
p->bt.min_height, p->bt.max_height,
|
|
p->bt.min_pixelclock, p->bt.max_pixelclock,
|
|
p->bt.standards, p->bt.capabilities);
|
|
break;
|
|
default:
|
|
dbgarg(cmd, "unknown type ");
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_DQEVENT:
|
|
{
|
|
struct v4l2_event *ev = arg;
|
|
|
|
ret = v4l2_event_dequeue(fh, ev, file->f_flags & O_NONBLOCK);
|
|
if (ret < 0) {
|
|
dbgarg(cmd, "no pending events?");
|
|
break;
|
|
}
|
|
dbgarg(cmd,
|
|
"pending=%d, type=0x%8.8x, sequence=%d, "
|
|
"timestamp=%lu.%9.9lu ",
|
|
ev->pending, ev->type, ev->sequence,
|
|
ev->timestamp.tv_sec, ev->timestamp.tv_nsec);
|
|
break;
|
|
}
|
|
case VIDIOC_SUBSCRIBE_EVENT:
|
|
{
|
|
struct v4l2_event_subscription *sub = arg;
|
|
|
|
ret = ops->vidioc_subscribe_event(fh, sub);
|
|
if (ret < 0) {
|
|
dbgarg(cmd, "failed, ret=%ld", ret);
|
|
break;
|
|
}
|
|
dbgarg(cmd, "type=0x%8.8x", sub->type);
|
|
break;
|
|
}
|
|
case VIDIOC_UNSUBSCRIBE_EVENT:
|
|
{
|
|
struct v4l2_event_subscription *sub = arg;
|
|
|
|
ret = ops->vidioc_unsubscribe_event(fh, sub);
|
|
if (ret < 0) {
|
|
dbgarg(cmd, "failed, ret=%ld", ret);
|
|
break;
|
|
}
|
|
dbgarg(cmd, "type=0x%8.8x", sub->type);
|
|
break;
|
|
}
|
|
case VIDIOC_CREATE_BUFS:
|
|
{
|
|
struct v4l2_create_buffers *create = arg;
|
|
|
|
ret = check_fmt(ops, create->format.type);
|
|
if (ret)
|
|
break;
|
|
|
|
ret = ops->vidioc_create_bufs(file, fh, create);
|
|
|
|
dbgarg(cmd, "count=%d @ %d\n", create->count, create->index);
|
|
break;
|
|
}
|
|
case VIDIOC_PREPARE_BUF:
|
|
{
|
|
struct v4l2_buffer *b = arg;
|
|
|
|
ret = check_fmt(ops, b->type);
|
|
if (ret)
|
|
break;
|
|
|
|
ret = ops->vidioc_prepare_buf(file, fh, b);
|
|
|
|
dbgarg(cmd, "index=%d", b->index);
|
|
break;
|
|
}
|
|
default:
|
|
if (!ops->vidioc_default)
|
|
break;
|
|
ret = ops->vidioc_default(file, fh, use_fh_prio ?
|
|
v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
|
|
cmd, arg);
|
|
break;
|
|
} /* switch */
|
|
|
|
if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
|
|
if (ret < 0) {
|
|
v4l_print_ioctl(vfd->name, cmd);
|
|
printk(KERN_CONT " error %ld\n", ret);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* In some cases, only a few fields are used as input, i.e. when the app sets
|
|
* "index" and then the driver fills in the rest of the structure for the thing
|
|
* with that index. We only need to copy up the first non-input field. */
|
|
static unsigned long cmd_input_size(unsigned int cmd)
|
|
{
|
|
/* Size of structure up to and including 'field' */
|
|
#define CMDINSIZE(cmd, type, field) \
|
|
case VIDIOC_##cmd: \
|
|
return offsetof(struct v4l2_##type, field) + \
|
|
sizeof(((struct v4l2_##type *)0)->field);
|
|
|
|
switch (cmd) {
|
|
CMDINSIZE(ENUM_FMT, fmtdesc, type);
|
|
CMDINSIZE(G_FMT, format, type);
|
|
CMDINSIZE(QUERYBUF, buffer, length);
|
|
CMDINSIZE(G_PARM, streamparm, type);
|
|
CMDINSIZE(ENUMSTD, standard, index);
|
|
CMDINSIZE(ENUMINPUT, input, index);
|
|
CMDINSIZE(G_CTRL, control, id);
|
|
CMDINSIZE(G_TUNER, tuner, index);
|
|
CMDINSIZE(QUERYCTRL, queryctrl, id);
|
|
CMDINSIZE(QUERYMENU, querymenu, index);
|
|
CMDINSIZE(ENUMOUTPUT, output, index);
|
|
CMDINSIZE(G_MODULATOR, modulator, index);
|
|
CMDINSIZE(G_FREQUENCY, frequency, tuner);
|
|
CMDINSIZE(CROPCAP, cropcap, type);
|
|
CMDINSIZE(G_CROP, crop, type);
|
|
CMDINSIZE(ENUMAUDIO, audio, index);
|
|
CMDINSIZE(ENUMAUDOUT, audioout, index);
|
|
CMDINSIZE(ENCODER_CMD, encoder_cmd, flags);
|
|
CMDINSIZE(TRY_ENCODER_CMD, encoder_cmd, flags);
|
|
CMDINSIZE(G_SLICED_VBI_CAP, sliced_vbi_cap, type);
|
|
CMDINSIZE(ENUM_FRAMESIZES, frmsizeenum, pixel_format);
|
|
CMDINSIZE(ENUM_FRAMEINTERVALS, frmivalenum, height);
|
|
default:
|
|
return _IOC_SIZE(cmd);
|
|
}
|
|
}
|
|
|
|
static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
|
|
void * __user *user_ptr, void ***kernel_ptr)
|
|
{
|
|
int ret = 0;
|
|
|
|
switch (cmd) {
|
|
case VIDIOC_QUERYBUF:
|
|
case VIDIOC_QBUF:
|
|
case VIDIOC_DQBUF: {
|
|
struct v4l2_buffer *buf = parg;
|
|
|
|
if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
|
|
if (buf->length > VIDEO_MAX_PLANES) {
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
*user_ptr = (void __user *)buf->m.planes;
|
|
*kernel_ptr = (void *)&buf->m.planes;
|
|
*array_size = sizeof(struct v4l2_plane) * buf->length;
|
|
ret = 1;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case VIDIOC_S_EXT_CTRLS:
|
|
case VIDIOC_G_EXT_CTRLS:
|
|
case VIDIOC_TRY_EXT_CTRLS: {
|
|
struct v4l2_ext_controls *ctrls = parg;
|
|
|
|
if (ctrls->count != 0) {
|
|
if (ctrls->count > V4L2_CID_MAX_CTRLS) {
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
*user_ptr = (void __user *)ctrls->controls;
|
|
*kernel_ptr = (void *)&ctrls->controls;
|
|
*array_size = sizeof(struct v4l2_ext_control)
|
|
* ctrls->count;
|
|
ret = 1;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
long
|
|
video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
|
|
v4l2_kioctl func)
|
|
{
|
|
char sbuf[128];
|
|
void *mbuf = NULL;
|
|
void *parg = (void *)arg;
|
|
long err = -EINVAL;
|
|
bool has_array_args;
|
|
size_t array_size = 0;
|
|
void __user *user_ptr = NULL;
|
|
void **kernel_ptr = NULL;
|
|
|
|
/* Copy arguments into temp kernel buffer */
|
|
if (_IOC_DIR(cmd) != _IOC_NONE) {
|
|
if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
|
|
parg = sbuf;
|
|
} else {
|
|
/* too big to allocate from stack */
|
|
mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
|
|
if (NULL == mbuf)
|
|
return -ENOMEM;
|
|
parg = mbuf;
|
|
}
|
|
|
|
err = -EFAULT;
|
|
if (_IOC_DIR(cmd) & _IOC_WRITE) {
|
|
unsigned long n = cmd_input_size(cmd);
|
|
|
|
if (copy_from_user(parg, (void __user *)arg, n))
|
|
goto out;
|
|
|
|
/* zero out anything we don't copy from userspace */
|
|
if (n < _IOC_SIZE(cmd))
|
|
memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
|
|
} else {
|
|
/* read-only ioctl */
|
|
memset(parg, 0, _IOC_SIZE(cmd));
|
|
}
|
|
}
|
|
|
|
err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
|
|
if (err < 0)
|
|
goto out;
|
|
has_array_args = err;
|
|
|
|
if (has_array_args) {
|
|
/*
|
|
* When adding new types of array args, make sure that the
|
|
* parent argument to ioctl (which contains the pointer to the
|
|
* array) fits into sbuf (so that mbuf will still remain
|
|
* unused up to here).
|
|
*/
|
|
mbuf = kmalloc(array_size, GFP_KERNEL);
|
|
err = -ENOMEM;
|
|
if (NULL == mbuf)
|
|
goto out_array_args;
|
|
err = -EFAULT;
|
|
if (copy_from_user(mbuf, user_ptr, array_size))
|
|
goto out_array_args;
|
|
*kernel_ptr = mbuf;
|
|
}
|
|
|
|
/* Handles IOCTL */
|
|
err = func(file, cmd, parg);
|
|
if (err == -ENOIOCTLCMD)
|
|
err = -ENOTTY;
|
|
|
|
if (has_array_args) {
|
|
*kernel_ptr = user_ptr;
|
|
if (copy_to_user(user_ptr, mbuf, array_size))
|
|
err = -EFAULT;
|
|
goto out_array_args;
|
|
}
|
|
/* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
|
|
results that must be returned. */
|
|
if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
|
|
goto out;
|
|
|
|
out_array_args:
|
|
/* Copy results into user buffer */
|
|
switch (_IOC_DIR(cmd)) {
|
|
case _IOC_READ:
|
|
case (_IOC_WRITE | _IOC_READ):
|
|
if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
|
|
err = -EFAULT;
|
|
break;
|
|
}
|
|
|
|
out:
|
|
kfree(mbuf);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(video_usercopy);
|
|
|
|
long video_ioctl2(struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
return video_usercopy(file, cmd, arg, __video_do_ioctl);
|
|
}
|
|
EXPORT_SYMBOL(video_ioctl2);
|