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Implement get_chmap/set_chmap for PCM plug, route and multi plugins

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Still incomplete implementations.  The query and set ops are missing
for route and multi plugins.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-07-25 15:36:16 +02:00
parent 3c4a22ea49
commit 3fb013065f
3 changed files with 93 additions and 0 deletions
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30
src/pcm/pcm_route.c
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@ -703,6 +703,33 @@ snd_pcm_route_read_areas(snd_pcm_t *pcm,
return size;
}
static int *snd_pcm_route_get_chmap(snd_pcm_t *pcm)
{
snd_pcm_route_t *route = pcm->private_data;
int *map, *slave_map;
unsigned int src, dst;
slave_map = snd_pcm_generic_get_chmap(pcm);
if (!slave_map)
return NULL;
map = calloc(4, route->schannels + 1);
if (!map) {
free(slave_map);
return NULL;
}
*map = route->schannels;
for (dst = 0; dst < route->params.ndsts; dst++) {
snd_pcm_route_ttable_dst_t *d = &route->params.dsts[dst];
for (src = 0; src < d->nsrcs; src++) {
int c = d->srcs[src].channel;
if (c < route->schannels && !map[c + 1])
map[c + 1] = slave_map[dst + 1];
}
}
free(slave_map);
return map;
}
static void snd_pcm_route_dump(snd_pcm_t *pcm, snd_output_t *out)
{
snd_pcm_route_t *route = pcm->private_data;
@ -760,6 +787,9 @@ static const snd_pcm_ops_t snd_pcm_route_ops = {
.async = snd_pcm_generic_async,
.mmap = snd_pcm_generic_mmap,
.munmap = snd_pcm_generic_munmap,
.query_chmaps = NULL, /* NYI */
.get_chmap = snd_pcm_route_get_chmap,
.set_chmap = NULL, /* NYI */
};
static int route_load_ttable(snd_pcm_route_params_t *params, snd_pcm_stream_t stream,