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alsa-pcm: add_bind_ctl_param: add support for array

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ALSA controls are represented as an array. So let's make it possible to
handle array's and bytes.
This commit is contained in:
Emil Svendsen 2024-03-03 11:03:50 +01:00
parent 96f35e15a0
commit b3fbd0e607
1 changed files with 24 additions and 6 deletions
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30
spa/plugins/alsa/alsa-pcm.c
View file

@ -435,36 +435,54 @@ struct spa_pod *spa_alsa_enum_propinfo(struct state *state,
static void add_bind_ctl_param(struct state *state, const snd_ctl_elem_value_t *elem, const snd_ctl_elem_info_t *info,
struct spa_pod_builder *b)
{
struct spa_pod_frame f[1];
char param_name[1024];
unsigned int count = snd_ctl_elem_info_get_count(info);
int type = snd_ctl_elem_info_get_type(info);
bool is_array = count > 1 && type != SND_CTL_ELEM_TYPE_BYTES;
snprintf(param_name, sizeof(param_name), "api.alsa.bind-ctl.%s",
snd_ctl_elem_info_get_name(info));
spa_pod_builder_string(b, param_name);
switch (snd_ctl_elem_info_get_type(info)) {
if (is_array)
spa_pod_builder_push_array(b, &f[0]);
switch (type) {
case SND_CTL_ELEM_TYPE_BOOLEAN:
spa_pod_builder_bool(b, snd_ctl_elem_value_get_boolean(elem, 0));
for (unsigned int i = 0; i < count; i++)
spa_pod_builder_bool(b, snd_ctl_elem_value_get_boolean(elem, i));
break;
case SND_CTL_ELEM_TYPE_INTEGER:
spa_pod_builder_int(b, snd_ctl_elem_value_get_integer(elem, 0));
for (unsigned int i = 0; i < count; i++)
spa_pod_builder_int(b, snd_ctl_elem_value_get_integer(elem, i));
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
spa_pod_builder_long(b, snd_ctl_elem_value_get_integer64(elem, 0));
for (unsigned int i = 0; i < count; i++)
spa_pod_builder_long(b, snd_ctl_elem_value_get_integer64(elem, i));
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
spa_pod_builder_int(b, snd_ctl_elem_value_get_enumerated(elem, 0));
for (unsigned int i = 0; i < count; i++)
spa_pod_builder_int(b, snd_ctl_elem_value_get_enumerated(elem, i));
break;
case SND_CTL_ELEM_TYPE_BYTES:
const void* bytes = snd_ctl_elem_value_get_bytes(elem);
spa_pod_builder_bytes(b, bytes, count);
break;
default:
// FIXME: we can probably support bytes but the length seems unknown in the API
spa_log_warn(state->log, "%s ctl '%s' not supported",
snd_ctl_elem_type_name(snd_ctl_elem_info_get_type(info)),
snd_ctl_elem_info_get_name(info));
break;
}
if (is_array)
spa_pod_builder_pop(b, &f[0]);
}
static void add_bind_ctl_params(struct state *state, struct spa_pod_builder *b)