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pcm: direct - add support for channel bindings in snd_pcm_direct_query_chmaps()

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Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2022-04-06 20:17:58 +02:00
parent bb9f258e19
commit 76659453ef
1 changed files with 28 additions and 1 deletions
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29
src/pcm/pcm_direct.c
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@ -1066,7 +1066,34 @@ int snd_pcm_direct_munmap(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
snd_pcm_chmap_query_t **snd_pcm_direct_query_chmaps(snd_pcm_t *pcm)
{
snd_pcm_direct_t *dmix = pcm->private_data;
return snd_pcm_query_chmaps(dmix->spcm);
snd_pcm_chmap_query_t **smaps, **maps;
unsigned int i, j;
if (dmix->bindings == NULL)
return snd_pcm_query_chmaps(dmix->spcm);
maps = calloc(2, sizeof(*maps));
if (!maps)
return NULL;
maps[0] = calloc(dmix->channels + 2, sizeof(int *));
if (!maps[0]) {
free(maps);
return NULL;
}
smaps = snd_pcm_query_chmaps(dmix->spcm);
if (smaps == NULL) {
snd_pcm_free_chmaps(maps);
return NULL;
}
maps[0]->type = SND_CHMAP_TYPE_FIXED;
maps[0]->map.channels = dmix->channels;
for (i = 0; i < dmix->channels; i++) {
j = dmix->bindings[i];
if (j == UINT_MAX || smaps[0]->map.channels < j)
continue;
maps[0]->map.pos[i] = smaps[0]->map.pos[j];
}
return maps;
}
snd_pcm_chmap_t *snd_pcm_direct_get_chmap(snd_pcm_t *pcm)