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pcm: direct - cleanups for snd_pcm_direct_reset_slave_ptr()

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- improve readability
- pass slave hw_ptr as argument - improves the code flow

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2022-05-03 19:08:59 +02:00
parent 76659453ef
commit d0ebce5928
5 changed files with 16 additions and 22 deletions
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18
src/pcm/pcm_direct.c
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@ -2120,22 +2120,22 @@ int snd_pcm_direct_parse_open_conf(snd_config_t *root, snd_config_t *conf,
return 0;
}
void snd_pcm_direct_reset_slave_ptr(snd_pcm_t *pcm, snd_pcm_direct_t *dmix)
void snd_pcm_direct_reset_slave_ptr(snd_pcm_t *pcm, snd_pcm_direct_t *dmix,
snd_pcm_uframes_t hw_ptr)
{
dmix->slave_appl_ptr = dmix->slave_hw_ptr = hw_ptr;
if (dmix->hw_ptr_alignment == SND_PCM_HW_PTR_ALIGNMENT_ROUNDUP ||
(dmix->hw_ptr_alignment == SND_PCM_HW_PTR_ALIGNMENT_AUTO &&
pcm->buffer_size <= pcm->period_size * 2))
(dmix->hw_ptr_alignment == SND_PCM_HW_PTR_ALIGNMENT_AUTO &&
pcm->buffer_size <= pcm->period_size * 2))
dmix->slave_appl_ptr =
((dmix->slave_appl_ptr + dmix->slave_period_size - 1) /
dmix->slave_period_size) * dmix->slave_period_size;
dmix->slave_period_size) * dmix->slave_period_size;
else if (dmix->hw_ptr_alignment == SND_PCM_HW_PTR_ALIGNMENT_ROUNDDOWN ||
(dmix->hw_ptr_alignment == SND_PCM_HW_PTR_ALIGNMENT_AUTO &&
(dmix->slave_period_size * SEC_TO_MS) /
pcm->rate < LOW_LATENCY_PERIOD_TIME))
(dmix->hw_ptr_alignment == SND_PCM_HW_PTR_ALIGNMENT_AUTO &&
((dmix->slave_period_size * SEC_TO_MS) / pcm->rate) < LOW_LATENCY_PERIOD_TIME))
dmix->slave_appl_ptr = dmix->slave_hw_ptr =
((dmix->slave_hw_ptr / dmix->slave_period_size) *
dmix->slave_period_size);
dmix->slave_period_size);
}
int _snd_pcm_direct_new(snd_pcm_t **pcmp, snd_pcm_direct_t **_dmix, int type,