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| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2012-10-22 23:42:14 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-10-23 16:13:41 +0200 |
| commit | 0e8014d772a7639f48d234b23dc4ce97335cce7f (patch) | |
| tree | dc2be9b0067a1eb896474e8dfa1b0b2d88d14e93 /include/sound/pcm.h | |
| parent | ALSA: hda - remove unused variable in azx_position_ok() (diff) | |
| download | linux-0e8014d772a7639f48d234b23dc4ce97335cce7f.tar.xz linux-0e8014d772a7639f48d234b23dc4ce97335cce7f.zip | |
ALSA: core: keep track of boundary wrap-around
Keep track of boundary crossing when hw_ptr
exceeds boundary limit and wraps-around. This
will help keep track of total number
of frames played/received at the kernel level
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
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 6268a4192d5c..28fd9f95f9ba 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -281,6 +281,7 @@ struct snd_pcm_runtime { unsigned long hw_ptr_jiffies; /* Time when hw_ptr is updated */ unsigned long hw_ptr_buffer_jiffies; /* buffer time in jiffies */ snd_pcm_sframes_t delay; /* extra delay; typically FIFO size */ + u64 hw_ptr_wrap; /* offset for hw_ptr due to boundary wrap-around */ /* -- HW params -- */ snd_pcm_access_t access; /* access mode */ |