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| author | Takashi Iwai <tiwai@suse.de> | 2008-10-13 03:07:14 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-05-05 14:47:21 +0200 |
| commit | 4bbe1ddf89a5ba3ec30fe5980912d8bda3a3cbb2 (patch) | |
| tree | c57b1b83a23bd80535ea5b9220d07a3ab09df955 /include/sound/pcm.h | |
| parent | Linux 2.6.30-rc4 (diff) | |
| download | linux-4bbe1ddf89a5ba3ec30fe5980912d8bda3a3cbb2.tar.xz linux-4bbe1ddf89a5ba3ec30fe5980912d8bda3a3cbb2.zip | |
ALSA: Add extra delay count in PCM
Added runtime->delay field to adjust the delayed samples for snd_pcm_delay().
Typically a hardware FIFO length is stored in this field, so that the
extra delay between hwptr and applptr can be computed.
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 c17296891617..267effddb070 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -270,6 +270,7 @@ struct snd_pcm_runtime { snd_pcm_uframes_t hw_ptr_base; /* Position at buffer restart */ snd_pcm_uframes_t hw_ptr_interrupt; /* Position at interrupt time */ unsigned long hw_ptr_jiffies; /* Time when hw_ptr is updated */ + snd_pcm_sframes_t delay; /* extra delay; typically FIFO size */ /* -- HW params -- */ snd_pcm_access_t access; /* access mode */ |