mirrors/alsa-lib
1
0
Fork 0
mirror of https://github.com/alsa-project/alsa-lib.git synced 2025-10-31 22:25:35 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

pcm: fix snd_pcm_mmap_hw_avail() near the boundary

Browse source 
This function returned incorrect results when hw.ptr was near the
boundary and hw.appl_ptr was near zero. Here "incorrect" means "greater
than the boundary".

The result was incorrect, because it was used as a return value of
various *_rewindable() functions and also as the delay for ioplug.

Signed-off-by: Alexander E. Patrakov <patrakov@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Alexander E. Patrakov 2014-08-31 22:23:47 +06:00 • committed by Takashi Iwai
parent 5f1960e3d8
commit 99a2254f5f
1 changed files with 1 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

8
src/pcm/pcm_local.h
View file

@ -461,13 +461,7 @@ static inline snd_pcm_sframes_t snd_pcm_mmap_capture_hw_avail(snd_pcm_t *pcm)
static inline snd_pcm_sframes_t snd_pcm_mmap_hw_avail(snd_pcm_t *pcm)
{
snd_pcm_sframes_t avail;
avail = *pcm->hw.ptr - *pcm->appl.ptr;
if (pcm->stream == SND_PCM_STREAM_PLAYBACK)
avail += pcm->buffer_size;
if (avail < 0)
avail += pcm->boundary;
return pcm->buffer_size - avail;
return pcm->buffer_size - snd_pcm_mmap_avail(pcm);
}
static inline const snd_pcm_channel_area_t *snd_pcm_mmap_areas(snd_pcm_t *pcm)