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media-session: save last target_node

Browse source 
Keep a per node entry of the saved target node and use this when
there is no other target node.
When explicitly moving a stream, save the new target node.
This commit is contained in:
Wim Taymans 2020-10-14 12:35:27 +02:00
parent 1bd31c1cf1
commit 3733a5e219
4 changed files with 66 additions and 45 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/examples/media-session/media-session.c
View file

@ -624,6 +624,8 @@ static void node_destroy(void *object)
pw_node_info_free(node->info);
node->info = NULL;
}
free(node->target_node);
node->target_node = NULL;
}
static const struct object_info node_info = {

3
src/examples/media-session/media-session.h
View file

@ -144,6 +144,9 @@ struct sm_node {
struct spa_list param_list; /**< list of sm_param */
struct pw_node_info *info;
struct spa_list port_list;
char *target_node; /** desired target node from stored
* preferences */
};
struct sm_port {

79
src/examples/media-session/policy-node.c
View file

@ -329,6 +329,38 @@ static void destroy_node(struct impl *impl, struct node *node)
sm_object_remove_data((struct sm_object*)node->obj, SESSION_KEY);
}
static struct node *find_node_by_id(struct impl *impl, uint32_t id)
{
struct node *node;
spa_list_for_each(node, &impl->node_list, link) {
if (node->id == id)
return node;
}
return NULL;
}
static const char *get_device_name(struct node *node)
{
if (node->type != NODE_TYPE_DEVICE ||
node->obj->obj.props == NULL)
return NULL;
return pw_properties_get(node->obj->obj.props, PW_KEY_NODE_NAME);
}
static uint32_t find_device_for_name(struct impl *impl, const char *name)
{
struct node *node;
const char *str;
spa_list_for_each(node, &impl->node_list, link) {
if ((str = get_device_name(node)) == NULL)
continue;
if (strcmp(str, name) == 0)
return node->obj->obj.id;
}
return SPA_ID_INVALID;
}
static void session_create(void *data, struct sm_object *object)
{
struct impl *impl = data;
@ -519,6 +551,7 @@ static int rescan_node(struct impl *impl, struct node *n)
struct pw_node_info *info;
struct node *peer;
struct sm_object *obj;
uint32_t path_id = SPA_ID_INVALID;
if (!n->active) {
pw_log_debug(NAME " %p: node %d is not active", impl, n->id);
@ -561,28 +594,29 @@ static int rescan_node(struct impl *impl, struct node *n)
return 0;
}
str = spa_dict_lookup(props, PW_KEY_NODE_EXCLUSIVE);
exclusive = str ? pw_properties_parse_bool(str) : false;
pw_log_debug(NAME " %p: exclusive:%d", impl, exclusive);
spa_zero(find);
if ((str = spa_dict_lookup(props, PW_KEY_NODE_EXCLUSIVE)) != NULL)
exclusive = pw_properties_parse_bool(str);
else
exclusive = false;
find.impl = impl;
find.target = n;
find.exclusive = exclusive;
pw_log_debug(NAME " %p: exclusive:%d", impl, exclusive);
str = spa_dict_lookup(props, PW_KEY_NODE_DONT_RECONNECT);
reconnect = str ? !pw_properties_parse_bool(str) : true;
str = spa_dict_lookup(props, PW_KEY_NODE_TARGET);
pw_log_info("trying to link node %d exclusive:%d reconnect:%d target:%s", n->id,
exclusive, reconnect, str);
/* we always honour the target node asked for by the client */
if ((str = spa_dict_lookup(props, PW_KEY_NODE_TARGET)) != NULL)
path_id = atoi(str);
if (path_id == SPA_ID_INVALID && n->obj->target_node != NULL)
path_id = find_device_for_name(impl, n->obj->target_node);
if (str != NULL) {
uint32_t path_id = atoi(str);
pw_log_info("trying to link node %d exclusive:%d reconnect:%d target:%d", n->id,
exclusive, reconnect, path_id);
if (path_id != SPA_ID_INVALID) {
pw_log_debug(NAME " %p: target:%d", impl, path_id);
if ((obj = sm_media_session_find_object(impl->session, path_id)) != NULL) {
@ -598,8 +632,7 @@ static int rescan_node(struct impl *impl, struct node *n)
pw_log_warn("node %d target:%d not found, find fallback:%d", n->id,
path_id, reconnect);
}
if (str == NULL || reconnect) {
if (path_id == SPA_ID_INVALID || reconnect) {
spa_list_for_each(peer, &impl->node_list, link)
find_node(&find, peer);
}
@ -680,16 +713,6 @@ static const struct sm_media_session_events session_events = {
.destroy = session_destroy,
};
static struct node *find_node_by_id(struct impl *impl, uint32_t id)
{
struct node *node;
spa_list_for_each(node, &impl->node_list, link) {
if (node->id == id)
return node;
}
return NULL;
}
static int move_node(struct impl *impl, uint32_t source, uint32_t target)
{
struct node *n, *src_node, *dst_node;
@ -734,8 +757,6 @@ static int handle_move(struct impl *impl, struct node *src_node, struct node *ds
const char *str;
struct pw_node_info *info;
if (src_node->peer == dst_node)
return 0;
@ -753,6 +774,10 @@ static int handle_move(struct impl *impl, struct node *src_node, struct node *ds
src_node->peer ? src_node->peer->id : SPA_ID_INVALID,
dst_node->id);
free(src_node->obj->target_node);
str = get_device_name(dst_node);
src_node->obj->target_node = str ? strdup(str) : NULL;
if (src_node->peer)
unlink_nodes(src_node, src_node->peer);
link_nodes(src_node, dst_node);

27
src/examples/media-session/restore-stream.c
View file

@ -74,12 +74,6 @@ struct stream {
struct spa_hook listener;
};
struct find_data {
struct impl *impl;
const char *name;
uint32_t id;
};
static void remove_idle_timeout(struct impl *impl)
{
struct pw_loop *main_loop = pw_context_get_main_loop(impl->context);
@ -129,7 +123,6 @@ static char *serialize_props(struct stream *str, const struct spa_pod *param)
float val = 0.0f;
bool b = false;
char *ptr;
const char *v;
size_t size;
FILE *f;
@ -156,15 +149,16 @@ static char *serialize_props(struct stream *str, const struct spa_pod *param)
fprintf(f, "volumes:%d", n_vals);
for (i = 0; i < n_vals; i++)
fprintf(f, ",%f", vals[i]);
fprintf(f, " ");
break;
}
default:
break;
}
}
if ((v = pw_properties_get(str->obj->obj.props, PW_KEY_NODE_TARGET)) != NULL) {
fprintf(f, "target-node:%s", v);
}
if (str->obj->target_node != NULL)
fprintf(f, "target-node:%s", str->obj->target_node);
fclose(f);
return ptr;
}
@ -192,7 +186,7 @@ static int restore_stream(struct stream *str, const char *val)
{
const char *p;
char *end;
char buf[1024], target[256];
char buf[1024];
struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buf, sizeof(buf));
struct spa_pod_frame f[2];
struct spa_pod *param;
@ -243,13 +237,10 @@ static int restore_stream(struct stream *str, const char *val)
}
else if (strstr(p, "target-node:") == p) {
p += 12;
end = strstr(p, " ");
if (end == NULL)
continue;
i = end - p;
strncpy(target, p, i);
target[i-1] = 0;
i = strlen(p);
pw_log_info("stream %d: target '%s'", str->obj->obj.id, p);
free(str->obj->target_node);
str->obj->target_node = i > 0 ? strndup(p, i) : NULL;
} else {
p++;
}