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| author | Jaroslav Kysela <perex@perex.cz> | 2009-04-27 09:44:40 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-05-29 11:47:33 +0200 |
| commit | 8bea869c5e56234990e6bad92a543437115bfc18 (patch) | |
| tree | 7d0a5c4eeeeb69623066eccb363f35e0f2e3fda6 /include/sound/pcm.h | |
| parent | e93721a70263afefbac781f575bfe851c6f95d84 (diff) | |
| download | linux-8bea869c5e56234990e6bad92a543437115bfc18.tar.gz linux-8bea869c5e56234990e6bad92a543437115bfc18.tar.bz2 linux-8bea869c5e56234990e6bad92a543437115bfc18.zip | |
ALSA: PCM midlevel: improve fifo_size handling
Move the fifo_size assignment to hw->ioctl callback to allow lowlevel
drivers overwrite the default behaviour.
fifo_size is in frames not bytes as specified in asound.h and alsa-lib's
documentation, but most hardware have fixed byte based FIFOs. Introduce
internal SNDRV_PCM_INFO_FIFO_IN_FRAMES.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/pcm.h')
| -rw-r--r-- | include/sound/pcm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 267effddb070..8a69b5c1e1c4 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -98,6 +98,7 @@ struct snd_pcm_ops { #define SNDRV_PCM_IOCTL1_INFO 1 #define SNDRV_PCM_IOCTL1_CHANNEL_INFO 2 #define SNDRV_PCM_IOCTL1_GSTATE 3 +#define SNDRV_PCM_IOCTL1_FIFO_SIZE 4 #define SNDRV_PCM_TRIGGER_STOP 0 #define SNDRV_PCM_TRIGGER_START 1 |