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pcm: rate: fix the crash for the partial period copy

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The size argument in snd_pcm_rate_commit_area can be smaller
than cont in drain. Return the original code. It should
not make things worse. Perhaps, we can fill the rest of
the period with silence in this case.

Fixes: https://github.com/alsa-project/alsa-lib/issues/274
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2022-10-17 13:52:51 +02:00
parent dac9059524
commit 9253f08fb7
1 changed files with 2 additions and 2 deletions
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4
src/pcm/pcm_rate.c
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@ -770,7 +770,7 @@ static snd_pcm_sframes_t snd_pcm_rate_forward(snd_pcm_t *pcm ATTRIBUTE_UNUSED,
static int snd_pcm_rate_commit_area(snd_pcm_t *pcm, snd_pcm_rate_t *rate,
snd_pcm_uframes_t appl_offset,
snd_pcm_uframes_t size,
snd_pcm_uframes_t size ATTRIBUTE_UNUSED,
snd_pcm_uframes_t slave_size)
{
snd_pcm_uframes_t cont = pcm->buffer_size - appl_offset;
@ -816,7 +816,7 @@ static int snd_pcm_rate_commit_area(snd_pcm_t *pcm, snd_pcm_rate_t *rate,
pcm->format);
snd_pcm_areas_copy(rate->pareas, cont,
areas, 0,
pcm->channels, size - cont,
pcm->channels, pcm->period_size - cont,
pcm->format);
snd_pcm_rate_write_areas1(pcm, rate->pareas, 0, rate->sareas, 0);