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pcm: route: Allow chmap syntax for slave channels in ttable

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Instead of writing e g "0" and "1", one can now write "FL" and "FR" instead.

E g:
	ttable.0.FL 1
	ttable.1.FR 1
	ttable.2.LFE 1

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
David Henningsson 2014-02-28 08:57:05 +01:00 • committed by Takashi Iwai
parent 2da7b0c2c1
commit 8ad8d22216
1 changed files with 20 additions and 2 deletions
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22
src/pcm/pcm_route.c
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@ -789,6 +789,24 @@ static void snd_pcm_route_dump(snd_pcm_t *pcm, snd_output_t *out)
snd_pcm_dump(route->plug.gen.slave, out);
}
static int strtochannel(const char *id, long *channel)
{
int err;
int ch;
err = safe_strtol(id, channel);
if (err >= 0)
return err;
ch = (int) snd_pcm_chmap_from_string(id);
if (ch == -1)
return -EINVAL;
/* For now, assume standard channel mapping */
*channel = ch - SND_CHMAP_FL;
return 0;
}
static const snd_pcm_ops_t snd_pcm_route_ops = {
.close = snd_pcm_route_close,
.info = snd_pcm_generic_info,
@ -983,7 +1001,7 @@ int snd_pcm_route_determine_ttable(snd_config_t *tt,
const char *id;
if (snd_config_get_id(jnode, &id) < 0)
continue;
err = safe_strtol(id, &schannel);
err = strtochannel(id, &schannel);
if (err < 0) {
SNDERR("Invalid slave channel: %s", id);
return -EINVAL;
@ -1046,7 +1064,7 @@ int snd_pcm_route_load_ttable(snd_config_t *tt, snd_pcm_route_ttable_entry_t *tt
const char *id;
if (snd_config_get_id(jnode, &id) < 0)
continue;
err = safe_strtol(id, &schannel);
err = strtochannel(id, &schannel);
if (err < 0 ||
schannel < 0 || (unsigned int) schannel > tt_ssize ||
(schannels > 0 && schannel >= schannels)) {