static int set_chmap(snd_pcm_t *pcm, int format, int channels, int rate,
int nargs, char **arg)
{
int i;
snd_pcm_chmap_t *map;
if (channels && channels != nargs) {
printf("Inconsistent channels %d vs %d\n", channels, nargs);
return 1;
}
if (!channels) {
if (!nargs) {
printf("No channels are given\n");
return 1;
}
channels = nargs;
}
if (setup_pcm(pcm, format, channels, rate))
return 1;
map = malloc(sizeof(int) * (channels + 1));
if (!map) {
printf("cannot malloc\n");
return 1;
}
map->channels = channels;
for (i = 0; i < channels; i++) {
int val = snd_pcm_chmap_from_string(arg[i]);
if (val < 0)
val = SND_CHMAP_UNKNOWN;
map->pos[i] = val;
}
if (snd_pcm_set_chmap(pcm, map) < 0) {
printf("Cannot set chmap\n");
return 1;
}
free(map);
map = snd_pcm_get_chmap(pcm);
if (!map) {
printf("Cannot get chmap\n");
return 1;
}
printf("Get channels = %d\n", map->channels);
print_channels(map);
free(map);
return 0;
}
int snd_pcm_generic_set_chmap(snd_pcm_t *pcm, const snd_pcm_chmap_t *map)
{
snd_pcm_generic_t *generic = pcm->private_data;
return snd_pcm_set_chmap(generic->slave, map);
}
