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pcm: multi plugin - adjust appl_ptr on rewind/forward operations

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When doing rewind or forward operations, application pointer needs to
be properly adjusted, in the same way when doing commit/write
operations.

Fixes: https://github.com/alsa-project/alsa-lib/pull/161
Signed-off-by: Sava Jakovljev <sava.jakovljev@teufel.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Sava Jakovljev 2021-07-05 20:28:34 +02:00 • committed by Jaroslav Kysela
parent c4972cb154
commit 1aeea94ce8
1 changed files with 3 additions and 2 deletions
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5
src/pcm/pcm_multi.c
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@ -669,6 +669,7 @@ static snd_pcm_sframes_t snd_pcm_multi_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t
return -EIO; return -EIO;
} }
} }
snd_pcm_mmap_appl_backward(pcm, frames);
return frames; return frames;
} }
@ -699,6 +700,7 @@ static snd_pcm_sframes_t snd_pcm_multi_forward(snd_pcm_t *pcm, snd_pcm_uframes_t
return -EIO; return -EIO;
} }
} }
snd_pcm_mmap_appl_forward(pcm, frames);
return frames; return frames;
} }
@ -782,8 +784,7 @@ static snd_pcm_sframes_t snd_pcm_multi_mmap_commit(snd_pcm_t *pcm,
if ((snd_pcm_uframes_t)result != size) if ((snd_pcm_uframes_t)result != size)
return -EIO; return -EIO;
} }
multi->appl_ptr += size; snd_pcm_mmap_appl_forward(pcm, size);
multi->appl_ptr %= pcm->boundary;
return size; return size;
} }