mirrors/pipewire
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pipewire/pipewire.git synced 2025-11-03 09:01:54 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

media-session: subscribe to params when needed

Browse source 
Subscribe to params and collect them.
This commit is contained in:
Wim Taymans 2019-11-19 16:08:40 +01:00
parent 541f3a4cc6
commit b7aa8f5c85
4 changed files with 101 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

89
src/examples/media-session/media-session.c
View file

@ -63,6 +63,11 @@ struct data {
size_t size;
};
struct param {
struct sm_param this;
struct spa_list link;
};
struct sync {
struct spa_list link;
int seq;
@ -227,6 +232,44 @@ static void client_destroy(void *object)
pw_client_info_free(client->info);
}
static struct param *add_param(struct spa_list *param_list,
uint32_t id, const struct spa_pod *param)
{
struct param *p;
if (param == NULL || !spa_pod_is_object(param)) {
errno = EINVAL;
return NULL;
}
if (id == SPA_ID_INVALID)
id = SPA_POD_OBJECT_ID(param);
p = malloc(sizeof(struct param) + SPA_POD_SIZE(param));
if (p == NULL)
return NULL;
p->this.id = id;
p->this.param = SPA_MEMBER(p, sizeof(struct param), struct spa_pod);
memcpy(p->this.param, param, SPA_POD_SIZE(param));
spa_list_append(param_list, &p->link);
return p;
}
static void clear_params(struct spa_list *param_list, uint32_t id)
{
struct param *p, *t;
spa_list_for_each_safe(p, t, param_list, link) {
if (id == SPA_ID_INVALID || p->this.id == id) {
spa_list_remove(&p->link);
free(p);
}
}
}
/**
* Node
*/
@ -234,6 +277,7 @@ static void node_event_info(void *object, const struct pw_node_info *info)
{
struct sm_node *node = object;
struct impl *impl = SPA_CONTAINER_OF(node->obj.session, struct impl, this);
uint32_t i;
pw_log_debug(NAME" %p: node %d info", impl, node->obj.id);
node->info = pw_node_info_update(node->info, info);
@ -242,11 +286,53 @@ static void node_event_info(void *object, const struct pw_node_info *info)
node->changed |= SM_NODE_CHANGE_MASK_INFO;
sm_media_session_emit_update(impl, &node->obj);
node->changed = 0;
if (info->change_mask & PW_NODE_CHANGE_MASK_PARAMS &&
(node->mask & SM_NODE_CHANGE_MASK_PARAMS) &&
!node->subscribe) {
uint32_t subscribe[info->n_params], n_subscribe = 0;
for (i = 0; i < info->n_params; i++) {
switch (info->params[i].id) {
case SPA_PARAM_PropInfo:
case SPA_PARAM_Props:
case SPA_PARAM_EnumFormat:
subscribe[n_subscribe++] = info->params[i].id;
break;
default:
break;
}
}
if (n_subscribe > 0) {
pw_node_proxy_subscribe_params((struct pw_node_proxy*)node->obj.proxy,
subscribe, n_subscribe);
node->subscribe = true;
}
}
}
static void node_event_param(void *object, int seq,
uint32_t id, uint32_t index, uint32_t next,
const struct spa_pod *param)
{
struct sm_node *node = object;
struct impl *impl = SPA_CONTAINER_OF(node->obj.session, struct impl, this);
if (index == 0)
clear_params(&node->param_list, id);
add_param(&node->param_list, id, param);
node->avail |= SM_NODE_CHANGE_MASK_PARAMS;
node->changed |= SM_NODE_CHANGE_MASK_PARAMS;
sm_media_session_emit_update(impl, &node->obj);
node->changed = 0;
}
static const struct pw_node_proxy_events node_events = {
PW_VERSION_NODE_PROXY_EVENTS,
.info = node_event_info,
.param = node_event_param,
};
static void node_destroy(void *object)
@ -258,6 +344,8 @@ static void node_destroy(void *object)
port->node = NULL;
spa_list_remove(&port->link);
}
clear_params(&node->param_list, SPA_ID_INVALID);
if (node->info)
pw_node_info_free(node->info);
}
@ -556,6 +644,7 @@ registry_global(void *data,uint32_t id,
{
struct sm_node *node = (struct sm_node*) obj;
spa_list_init(&node->port_list);
spa_list_init(&node->param_list);
break;
}
case PW_TYPE_INTERFACE_Port: