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Added snd_pcm_route_determine_ttable()

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This commit is contained in:
Jaroslav Kysela 2001-12-12 18:19:43 +00:00
parent cd29f8b860
commit d1c4f4e8aa
1 changed files with 68 additions and 6 deletions
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74
src/pcm/pcm_route.c
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@ -779,6 +779,55 @@ int snd_pcm_route_open(snd_pcm_t **pcmp, const char *name,
return 0;
}
int snd_pcm_route_determine_ttable(snd_config_t *tt,
unsigned int *tt_csize,
unsigned int *tt_ssize)
{
snd_config_iterator_t i, inext;
long csize = 0, ssize = 0;
int err;
assert(tt && tt_csize && tt_ssize);
snd_config_for_each(i, inext, tt) {
snd_config_t *in = snd_config_iterator_entry(i);
snd_config_iterator_t j, jnext;
long cchannel;
const char *id;
if (!snd_config_get_id(in, &id) < 0)
continue;
err = safe_strtol(id, &cchannel);
if (err < 0) {
SNDERR("Invalid client channel: %s", id);
return -EINVAL;
}
if (cchannel + 1 > csize)
csize = cchannel + 1;
if (snd_config_get_type(in) != SND_CONFIG_TYPE_COMPOUND)
return -EINVAL;
snd_config_for_each(j, jnext, in) {
snd_config_t *jnode = snd_config_iterator_entry(j);
long schannel;
const char *id;
if (snd_config_get_id(jnode, &id) < 0)
continue;
err = safe_strtol(id, &schannel);
if (err < 0) {
SNDERR("Invalid slave channel: %s", id);
return -EINVAL;
}
if (schannel + 1 > ssize)
ssize = schannel + 1;
}
}
if (csize == 0 || ssize == 0) {
SNDERR("Invalid null ttable configuration");
return -EINVAL;
}
*tt_csize = csize;
*tt_ssize = ssize;
return 0;
}
/* this functions is used from pcm_plug.c */
int snd_pcm_route_load_ttable(snd_config_t *tt, snd_pcm_route_ttable_entry_t *ttable,
unsigned int tt_csize, unsigned int tt_ssize,
@ -843,8 +892,6 @@ int snd_pcm_route_load_ttable(snd_config_t *tt, snd_pcm_route_ttable_entry_t *tt
return 0;
}
#define MAX_CHANNELS 32
int _snd_pcm_route_open(snd_pcm_t **pcmp, const char *name,
snd_config_t *root, snd_config_t *conf,
snd_pcm_stream_t stream, int mode)
@ -856,7 +903,8 @@ int _snd_pcm_route_open(snd_pcm_t **pcmp, const char *name,
snd_pcm_format_t sformat = SND_PCM_FORMAT_UNKNOWN;
int schannels = -1;
snd_config_t *tt = NULL;
snd_pcm_route_ttable_entry_t ttable[MAX_CHANNELS*MAX_CHANNELS];
snd_pcm_route_ttable_entry_t *ttable = NULL;
unsigned int csize, ssize;
unsigned int cused, sused;
snd_config_for_each(i, next, conf) {
snd_config_t *n = snd_config_iterator_entry(i);
@ -900,21 +948,35 @@ int _snd_pcm_route_open(snd_pcm_t **pcmp, const char *name,
return -EINVAL;
}
err = snd_pcm_route_load_ttable(tt, ttable, MAX_CHANNELS, MAX_CHANNELS,
err = snd_pcm_route_determine_ttable(tt, &csize, &ssize);
if (err < 0) {
snd_config_delete(sconf);
return err;
}
ttable = malloc(csize * ssize * sizeof(snd_pcm_route_ttable_entry_t));
if (ttable == NULL) {
snd_config_delete(sconf);
return -ENOMEM;
}
err = snd_pcm_route_load_ttable(tt, ttable, csize, ssize,
&cused, &sused, schannels);
if (err < 0) {
free(ttable);
snd_config_delete(sconf);
return err;
}
err = snd_pcm_open_slave(&spcm, root, sconf, stream, mode);
snd_config_delete(sconf);
if (err < 0)
if (err < 0) {
free(ttable);
return err;
}
err = snd_pcm_route_open(pcmp, name, sformat, schannels,
ttable, MAX_CHANNELS,
ttable, ssize,
cused, sused,
spcm, 1);
free(ttable);
if (err < 0)
snd_pcm_close(spcm);
return err;