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[media] em28xx-audio: Some Alsa API fixes

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Mark the alsa stream with SNDRV_PCM_INFO_BATCH,
as the timing to get audio streams can vary.

Also, add SNDRV_PCM_TRIGGER for pause/release.

while here, fix the stop indicator, to be sure that audio
will be properly released at the stop events.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2011-06-19 13:39:31 -03:00
parent debb724149
commit dff0f8c279
1 changed files with 6 additions and 1 deletions
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7
drivers/media/video/em28xx/em28xx-audio.c
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@ -249,6 +249,7 @@ static struct snd_pcm_hardware snd_em28xx_hw_capture = {
.info = SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BATCH |
SNDRV_PCM_INFO_MMAP_VALID,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
@ -401,11 +402,15 @@ static int snd_em28xx_capture_trigger(struct snd_pcm_substream *substream,
int retval = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: /* fall through */
case SNDRV_PCM_TRIGGER_RESUME: /* fall through */
case SNDRV_PCM_TRIGGER_START:
atomic_set(&dev->stream_started, 1);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* fall through */
case SNDRV_PCM_TRIGGER_SUSPEND: /* fall through */
case SNDRV_PCM_TRIGGER_STOP:
atomic_set(&dev->stream_started, 1);
atomic_set(&dev->stream_started, 0);
break;
default:
retval = -EINVAL;