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https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-04 13:30:12 -05:00
metadata: store default-nodes as JSON
Don't just store the id in the metadata but a JSON object with the node name. This makes it possible to easily introspect the metadata and also extend the metadata with more fields later. Instead of matching the metadata id to the global ids we now have to match it against the name.
This commit is contained in:
Wim Taymans
parent
8d5cc7013d
commit
c8fd34a41d
6 changed files with 462 additions and 202 deletions
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@ -35,6 +35,7 @@
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#include <spa/param/audio/format-utils.h>
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#include <spa/param/props.h>
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#include <spa/debug/pod.h>
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#include <spa/utils/json.h>
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#include "pipewire/pipewire.h"
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#include "extensions/metadata.h"
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@ -60,8 +61,8 @@
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struct default_node {
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char *key;
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char *key_config;
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uint32_t value;
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uint32_t config;
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char *value;
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char *config;
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};
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struct impl {
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@ -362,11 +363,56 @@ static void destroy_node(struct impl *impl, struct node *node)
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sm_object_remove_data((struct sm_object*)node->obj, SESSION_KEY);
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}
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static struct node *find_node_by_id(struct impl *impl, uint32_t id)
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static inline int strzcmp(const char *s1, const char *s2)
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{
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if (s1 == s2)
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return 0;
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if (s1 == NULL || s2 == NULL)
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return 1;
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return strcmp(s1, s2);
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}
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static int json_object_find(const char *obj, const char *key, char *value, size_t len)
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{
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struct spa_json it[2];
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const char *v;
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char k[128];
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spa_json_init(&it[0], obj, strlen(obj));
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if (spa_json_enter_object(&it[0], &it[1]) <= 0)
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return -EINVAL;
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while (spa_json_get_string(&it[1], k, sizeof(k)-1) > 0) {
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if (strcmp(k, key) == 0) {
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if (spa_json_get_string(&it[1], value, len) <= 0)
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continue;
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return 0;
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} else {
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if (spa_json_next(&it[1], &v) <= 0)
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break;
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}
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}
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return -ENOENT;
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}
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static bool check_node_name(struct node *node, const char *name)
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{
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const char *str;
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if ((str = pw_properties_get(node->obj->obj.props, PW_KEY_NODE_NAME)) != NULL &&
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name != NULL && strcmp(str, name) == 0)
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return true;
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return false;
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}
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static struct node *find_node_by_id_name(struct impl *impl, uint32_t id, const char *name)
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{
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struct node *node;
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uint32_t name_id = name ? atoi(name) : SPA_ID_INVALID;
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spa_list_for_each(node, &impl->node_list, link) {
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if (node->id == id)
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if (node->id == id || node->id == name_id)
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return node;
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if (check_node_name(node, name))
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return node;
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}
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return NULL;
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@ -417,7 +463,6 @@ static void session_create(void *data, struct sm_object *object)
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static void session_remove(void *data, struct sm_object *object)
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{
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struct default_node *def;
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struct impl *impl = data;
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pw_log_debug(NAME " %p: remove global '%d'", impl, object->id);
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@ -431,12 +476,7 @@ static void session_remove(void *data, struct sm_object *object)
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if (n->peer == node)
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n->peer = NULL;
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}
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for (def = impl->defaults; def->key != NULL; ++def)
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if (def->config == object->id)
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def->config = SPA_ID_INVALID;
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}
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sm_media_session_schedule_rescan(impl->session);
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}
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@ -491,14 +531,18 @@ static int find_node(void *data, struct node *node)
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if (node->media) {
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bool is_default = false;
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if (strcmp(node->media, "Audio") == 0) {
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if (node->direction == PW_DIRECTION_INPUT)
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is_default = impl->defaults[DEFAULT_AUDIO_SINK].config == node->id;
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is_default = check_node_name(node,
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impl->defaults[DEFAULT_AUDIO_SINK].config);
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else if (node->direction == PW_DIRECTION_OUTPUT)
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is_default = impl->defaults[DEFAULT_AUDIO_SOURCE].config == node->id;
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is_default = check_node_name(node,
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impl->defaults[DEFAULT_AUDIO_SOURCE].config);
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} else if (strcmp(node->media, "Video") == 0) {
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if (node->direction == PW_DIRECTION_OUTPUT)
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is_default = impl->defaults[DEFAULT_VIDEO_SOURCE].config == node->id;
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is_default = check_node_name(node,
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impl->defaults[DEFAULT_VIDEO_SOURCE].config);
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}
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if (is_default)
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priority += 10000;
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@ -813,19 +857,30 @@ static void refresh_auto_default_nodes(struct impl *impl)
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if (impl->session->metadata == NULL)
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return;
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pw_log_debug(NAME" %p: refresh", impl);
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/* Auto set default nodes */
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for (def = impl->defaults; def->key != NULL; ++def) {
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struct node *node;
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node = find_auto_default_node(impl, def);
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if (node == NULL && def->value != SPA_ID_INVALID) {
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def->value = SPA_ID_INVALID;
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pw_metadata_set_property(impl->session->metadata, PW_ID_CORE, def->key, NULL, NULL);
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} else if (node != NULL && def->value != node->id) {
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char buf[64];
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def->value = node->id;
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snprintf(buf, sizeof(buf), "%d", node->id);
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pw_metadata_set_property(impl->session->metadata, PW_ID_CORE, def->key,
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SPA_TYPE_INFO_BASE"Id", buf);
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if (node == NULL && def->value != NULL) {
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def->value = NULL;
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pw_metadata_set_property(impl->session->metadata,
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PW_ID_CORE, def->key, NULL, NULL);
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} else if (node != NULL) {
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const char *name = pw_properties_get(node->obj->obj.props, PW_KEY_NODE_NAME);
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char buf[1024];
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if (strzcmp(name, def->value) == 0)
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continue;
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free(def->value);
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def->value = strdup(name);
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snprintf(buf, sizeof(buf), "{ \"name\": \"%s\" }", name);
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pw_metadata_set_property(impl->session->metadata,
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PW_ID_CORE, def->key,
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"Spa:String:JSON", buf);
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}
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}
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}
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@ -905,21 +960,32 @@ static int metadata_property(void *object, uint32_t subject,
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const char *key, const char *type, const char *value)
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{
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struct impl *impl = object;
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uint32_t val = (key && value) ? (uint32_t)atoi(value) : SPA_ID_INVALID;
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if (subject == PW_ID_CORE) {
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struct default_node *def;
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bool changed = false;
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char *val = NULL;
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if (key != NULL && value != NULL) {
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char name[1024];
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pw_log_info("meta %s: %s", key, value);
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if (json_object_find(value, "name", name, sizeof(name)) < 0)
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return 0;
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pw_log_info("meta name: %s", name);
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val = name;
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}
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for (def = impl->defaults; def->key != NULL; ++def) {
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if (key == NULL || strcmp(key, def->key_config) == 0) {
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if (def->config != val)
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if (strzcmp(def->config, val) != 0)
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changed = true;
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def->config = val;
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free(def->config);
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def->config = val ? strdup(val) : NULL;
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}
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if (key == NULL || strcmp(key, def->key) == 0) {
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bool eff_changed = (def->value != val);
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def->value = val;
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bool eff_changed = strzcmp(def->value, val) != 0;
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free(def->value);
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def->value = val ? strdup(val) : NULL;
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/* The effective value was changed. In case it was changed by
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* someone else than us, reset the value to avoid confusion. */
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@ -927,23 +993,21 @@ static int metadata_property(void *object, uint32_t subject,
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refresh_auto_default_nodes(impl);
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}
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}
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if (changed)
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sm_media_session_schedule_rescan(impl->session);
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} else {
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if (val != SPA_ID_INVALID && strcmp(key, "target.node") == 0) {
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} else if (key != NULL && strcmp(key, "target.node") == 0) {
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if (value != NULL) {
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struct node *src_node, *dst_node;
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dst_node = find_node_by_id(impl, val);
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src_node = dst_node ? find_node_by_id(impl, subject) : NULL;
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dst_node = find_node_by_id_name(impl, SPA_ID_INVALID, value);
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src_node = dst_node ? find_node_by_id_name(impl, subject, NULL) : NULL;
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if (dst_node && src_node)
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handle_move(impl, src_node, dst_node);
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} else if (val == SPA_ID_INVALID && key != NULL &&
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strcmp(key, "target.node") == 0) {
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} else {
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/* Unset target node. Schedule rescan to re-link, if needed. */
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struct node *src_node;
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src_node = find_node_by_id(impl, subject);
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src_node = find_node_by_id_name(impl, subject, NULL);
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if (src_node) {
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free(src_node->obj->target_node);
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src_node->obj->target_node = NULL;
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@ -974,15 +1038,15 @@ int sm_policy_node_start(struct sm_media_session *session)
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impl->sample_rate = 48000;
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impl->defaults[DEFAULT_AUDIO_SINK] = (struct default_node){
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DEFAULT_AUDIO_SINK_KEY, DEFAULT_CONFIG_AUDIO_SINK_KEY, SPA_ID_INVALID, SPA_ID_INVALID
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DEFAULT_AUDIO_SINK_KEY, DEFAULT_CONFIG_AUDIO_SINK_KEY, NULL, NULL
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};
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impl->defaults[DEFAULT_AUDIO_SOURCE] = (struct default_node){
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DEFAULT_AUDIO_SOURCE_KEY, DEFAULT_CONFIG_AUDIO_SOURCE_KEY, SPA_ID_INVALID, SPA_ID_INVALID
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DEFAULT_AUDIO_SOURCE_KEY, DEFAULT_CONFIG_AUDIO_SOURCE_KEY, NULL, NULL
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};
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impl->defaults[DEFAULT_VIDEO_SOURCE] = (struct default_node){
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DEFAULT_VIDEO_SOURCE_KEY, DEFAULT_CONFIG_VIDEO_SOURCE_KEY, SPA_ID_INVALID, SPA_ID_INVALID
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DEFAULT_VIDEO_SOURCE_KEY, DEFAULT_CONFIG_VIDEO_SOURCE_KEY, NULL, NULL
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};
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impl->defaults[3] = (struct default_node){ NULL, NULL, SPA_ID_INVALID, SPA_ID_INVALID };
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impl->defaults[3] = (struct default_node){ NULL, NULL, NULL, NULL };
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flag = pw_properties_get(session->props, NAME ".streams-follow-default");
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impl->streams_follow_default = (flag != NULL && pw_properties_parse_bool(flag));
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