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V4L-DVB: ir-core: remove the ancillary buffer

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Now that the decoders are state machine, there's no need to create
an ancillary buffer while decoding the protocol. Just call the decoders
code directly, event by event.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2010-04-04 10:44:51 -03:00
parent 26d5683d36
commit 587835a4b0
4 changed files with 13 additions and 70 deletions
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32
drivers/media/IR/ir-nec-decoder.c
View file

@ -125,14 +125,14 @@ static struct attribute_group decoder_attribute_group = {
/**
* handle_event() - Decode one NEC pulse or space
* ir_nec_decode() - Decode one NEC pulse or space
* @input_dev: the struct input_dev descriptor of the device
* @ev: event array with type/duration of pulse/space
*
* This function returns -EINVAL if the pulse violates the state machine
*/
static int handle_event(struct input_dev *input_dev,
struct ir_raw_event *ev)
static int ir_nec_decode(struct input_dev *input_dev,
struct ir_raw_event *ev)
{
struct decoder_data *data;
struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
@ -289,32 +289,6 @@ static int handle_event(struct input_dev *input_dev,
return -EINVAL;
}
/**
* ir_nec_decode() - Decodes all NEC pulsecodes on a given array
* @input_dev: the struct input_dev descriptor of the device
* @evs: event array with type/duration of pulse/space
* @len: length of the array
* This function returns the number of decoded pulses
*/
static int ir_nec_decode(struct input_dev *input_dev,
struct ir_raw_event *evs,
int len)
{
struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
struct decoder_data *data;
int pos = 0;
int rc = 0;
data = get_decoder_data(ir_dev);
if (!data || !data->enabled)
return 0;
for (pos = 0; pos < len; pos++)
handle_event(input_dev, &evs[pos]);
return rc;
}
static int ir_nec_register(struct input_dev *input_dev)
{
struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);

20
drivers/media/IR/ir-raw-event.c
View file

@ -138,37 +138,33 @@ int ir_raw_event_handle(struct input_dev *input_dev)
{
struct ir_input_dev *ir = input_get_drvdata(input_dev);
int rc;
struct ir_raw_event *evs;
struct ir_raw_event ev;
int len, i;
/*
* Store the events into a temporary buffer. This allows calling more than
* one decoder to deal with the received data
*/
len = kfifo_len(&ir->raw->kfifo) / sizeof(*evs);
len = kfifo_len(&ir->raw->kfifo) / sizeof(ev);
if (!len)
return 0;
evs = kmalloc(len * sizeof(*evs), GFP_ATOMIC);
for (i = 0; i < len; i++) {
rc = kfifo_out(&ir->raw->kfifo, &evs[i], sizeof(*evs));
if (rc != sizeof(*evs)) {
rc = kfifo_out(&ir->raw->kfifo, &ev, sizeof(ev));
if (rc != sizeof(ev)) {
IR_dprintk(1, "overflow error: received %d instead of %zd\n",
rc, sizeof(*evs));
rc, sizeof(ev));
return -EINVAL;
}
IR_dprintk(2, "event type %d, time before event: %07luus\n",
evs[i].type, (evs[i].delta.tv_nsec + 500) / 1000);
ev.type, (ev.delta.tv_nsec + 500) / 1000);
rc = RUN_DECODER(decode, input_dev, &ev);
}
/*
* Call all ir decoders. This allows decoding the same event with
* more than one protocol handler. It returns the number of keystrokes
* sent to the event interface
* more than one protocol handler.
*/
rc = RUN_DECODER(decode, input_dev, evs, len);
kfree(evs);
return rc;
}

28
drivers/media/IR/ir-rc5-decoder.c
View file

@ -142,7 +142,7 @@ static struct attribute_group decoder_attribute_group = {
*
* This function returns -EINVAL if the pulse violates the state machine
*/
static int handle_event(struct input_dev *input_dev,
static int ir_rc5_decode(struct input_dev *input_dev,
struct ir_raw_event *ev)
{
struct decoder_data *data;
@ -273,32 +273,6 @@ printk("%d halves, %d bits\n", n_half, bit);
return -EINVAL;
}
/**
* ir_rc5_decode() - Decodes all RC-5 pulsecodes on a given array
* @input_dev: the struct input_dev descriptor of the device
* @evs: event array with type/duration of pulse/space
* @len: length of the array
* This function returns the number of decoded pulses
*/
static int ir_rc5_decode(struct input_dev *input_dev,
struct ir_raw_event *evs,
int len)
{
struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
struct decoder_data *data;
int pos = 0;
int rc = 0;
data = get_decoder_data(ir_dev);
if (!data || !data->enabled)
return 0;
for (pos = 0; pos < len; pos++)
handle_event(input_dev, &evs[pos]);
return rc;
}
static int ir_rc5_register(struct input_dev *input_dev)
{
struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);

3
include/media/ir-core.h
View file

@ -101,8 +101,7 @@ struct ir_raw_handler {
struct list_head list;
int (*decode)(struct input_dev *input_dev,
struct ir_raw_event *evs,
int len);
struct ir_raw_event *ev);
int (*raw_register)(struct input_dev *input_dev);
int (*raw_unregister)(struct input_dev *input_dev);
};