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Completed parametric configuration and begun to use it

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This commit is contained in:
Abramo Bagnara 2001-05-22 09:19:43 +00:00
parent ecfec483a8
commit f5534c46ed
12 changed files with 617 additions and 256 deletions
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101
src/control/control.c
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@ -380,57 +380,38 @@ int snd_ctl_wait(snd_ctl_t *ctl, int timeout)
return 0;
}
/**
* \brief Opens a CTL
* \param ctlp Returned CTL handle
* \param name ASCII identifier of the CTL handle
* \param mode Open mode (see #SND_CTL_NONBLOCK, #SND_CTL_ASYNC)
* \return 0 on success otherwise a negative error code
*/
int snd_ctl_open(snd_ctl_t **ctlp, const char *name, int mode)
int snd_ctl_open_conf(snd_ctl_t **ctlp, const char *name,
snd_config_t *ctl_conf, int mode)
{
const char *str;
char buf[256];
int err;
snd_config_t *ctl_conf, *conf, *type_conf;
snd_config_t *conf, *type_conf = NULL;
snd_config_iterator_t i, next;
const char *lib = NULL, *open_name = NULL;
int (*open_func)(snd_ctl_t **, const char *, snd_config_t *, int);
void *h;
const char *name1;
assert(ctlp && name);
err = snd_config_update();
if (err < 0)
return err;
err = snd_config_search_alias(snd_config, "ctl", name, &ctl_conf);
name1 = name;
if (err < 0 || snd_config_get_string(ctl_conf, &name1) >= 0) {
int card;
char socket[256], sname[256];
err = sscanf(name1, "hw:%d", &card);
if (err == 1)
return snd_ctl_hw_open(ctlp, name, card, mode);
err = sscanf(name1, "shm:%256[^,],%256[^,]", socket, sname);
if (err == 2)
return snd_ctl_shm_open(ctlp, name, socket, sname, mode);
SNDERR("Unknown ctl %s", name1);
return -ENOENT;
}
if (snd_config_get_type(ctl_conf) != SND_CONFIG_TYPE_COMPOUND) {
SNDERR("Invalid type for %s", snd_config_get_id(ctl_conf));
if (name)
SNDERR("Invalid type for CTL %s definition", name);
else
SNDERR("Invalid type for CTL definition");
return -EINVAL;
}
err = snd_config_search(ctl_conf, "type", &conf);
if (err < 0)
if (err < 0) {
SNDERR("type is not defined");
return err;
}
err = snd_config_get_string(conf, &str);
if (err < 0)
if (err < 0) {
SNDERR("Invalid type for %s", snd_config_get_id(conf));
return err;
}
err = snd_config_search_alias(snd_config, "ctl_type", str, &type_conf);
if (err >= 0) {
if (snd_config_get_type(type_conf) != SND_CONFIG_TYPE_COMPOUND) {
SNDERR("Invalid type for ctl type %s definition", str);
SNDERR("Invalid type for CTL type %s definition", str);
return -EINVAL;
}
snd_config_for_each(i, next, type_conf) {
@ -440,14 +421,18 @@ int snd_ctl_open(snd_ctl_t **ctlp, const char *name, int mode)
continue;
if (strcmp(id, "lib") == 0) {
err = snd_config_get_string(n, &lib);
if (err < 0)
if (err < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
continue;
}
if (strcmp(id, "open") == 0) {
err = snd_config_get_string(n, &open_name);
if (err < 0)
if (err < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
continue;
}
SNDERR("Unknown field %s", id);
@ -474,6 +459,52 @@ int snd_ctl_open(snd_ctl_t **ctlp, const char *name, int mode)
return open_func(ctlp, name, ctl_conf, mode);
}
int snd_ctl_open_noupdate(snd_ctl_t **ctlp, const char *name, int mode)
{
int err;
snd_config_t *ctl_conf;
const char *args = strchr(name, ':');
char *base;
if (args) {
args++;
base = alloca(args - name);
memcpy(base, name, args - name - 1);
base[args - name - 1] = 0;
} else
base = (char *) name;
err = snd_config_search_alias(snd_config, "ctl", base, &ctl_conf);
if (err < 0) {
SNDERR("Unknown CTL %s", name);
return err;
}
if (args) {
err = snd_config_expand(ctl_conf, args, &ctl_conf);
if (err < 0)
return err;
}
err = snd_ctl_open_conf(ctlp, name, ctl_conf, mode);
if (args)
snd_config_delete(ctl_conf);
return err;
}
/**
* \brief Opens a CTL
* \param ctlp Returned CTL handle
* \param name ASCII identifier of the CTL handle
* \param mode Open mode (see #SND_CTL_NONBLOCK, #SND_CTL_ASYNC)
* \return 0 on success otherwise a negative error code
*/
int snd_ctl_open(snd_ctl_t **ctlp, const char *name, int mode)
{
int err;
assert(ctlp && name);
err = snd_config_update();
if (err < 0)
return err;
return snd_ctl_open_noupdate(ctlp, name, mode);
}
/**
* \brief Set CTL element #SND_CTL_ELEM_TYPE_BYTES value
* \param ctl CTL handle