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alsa: add Tag set and enum support

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So that we can see the tags on the sinks and sources.
This commit is contained in:
Wim Taymans 2023-10-11 15:56:52 +02:00
parent 7554bdea97
commit a9659d9dce
4 changed files with 68 additions and 4 deletions
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31
spa/plugins/alsa/alsa-pcm-source.c
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@ -524,6 +524,16 @@ impl_node_port_enum_params(void *object, int seq,
return 0;
}
break;
case SPA_PARAM_Tag:
switch (result.index) {
case 0: case 1:
if ((param = this->tag[result.index]) == NULL)
goto next;
break;
default:
return 0;
}
break;
default:
return -ENOENT;
@ -636,6 +646,26 @@ impl_node_port_set_param(void *object,
emit_port_info(this, false);
break;
}
case SPA_PARAM_Tag:
{
enum spa_direction other = SPA_DIRECTION_REVERSE(direction);
if (param != NULL) {
struct spa_tag_info info;
void *state = NULL;
if (spa_tag_parse(param, &info, &state) < 0 ||
info.direction != other)
return -EINVAL;
}
if (spa_tag_compare(param, this->tag[other]) != 0) {
free(this->tag[other]);
this->tag[other] = param ? spa_pod_copy(param) : NULL;
this->port_info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
this->port_params[PORT_Tag].user++;
emit_port_info(this, false);
}
break;
}
default:
res = -ENOENT;
break;
@ -901,6 +931,7 @@ impl_init(const struct spa_handle_factory *factory,
this->port_params[PORT_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
this->port_params[PORT_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
this->port_params[PORT_Latency] = SPA_PARAM_INFO(SPA_PARAM_Latency, SPA_PARAM_INFO_READWRITE);
this->port_params[PORT_Tag] = SPA_PARAM_INFO(SPA_PARAM_Tag, SPA_PARAM_INFO_READWRITE);
this->port_info.params = this->port_params;
this->port_info.n_params = N_PORT_PARAMS;