static void remove_all_items(struct obs_scene *scene)
{
struct obs_scene_item *item;
DARRAY(struct obs_scene_item*) items;
da_init(items);
full_lock(scene);
item = scene->first_item;
while (item) {
struct obs_scene_item *del_item = item;
item = item->next;
remove_without_release(del_item);
da_push_back(items, &del_item);
}
full_unlock(scene);
for (size_t i = 0; i < items.num; i++)
obs_sceneitem_release(items.array[i]);
da_free(items);
}
void obs_sceneitem_remove(obs_sceneitem_t item)
{
obs_scene_t scene;
if (!item)
return;
scene = item->parent;
if (scene)
pthread_mutex_lock(&scene->mutex);
if (item->removed) {
if (scene)
pthread_mutex_unlock(&scene->mutex);
return;
}
item->removed = true;
signal_item_remove(item);
detach_sceneitem(item);
if (scene)
pthread_mutex_unlock(&scene->mutex);
obs_sceneitem_release(item);
}
static void scene_video_render(void *data, gs_effect_t *effect)
{
DARRAY(struct obs_scene_item*) remove_items;
struct obs_scene *scene = data;
struct obs_scene_item *item;
da_init(remove_items);
video_lock(scene);
item = scene->first_item;
gs_blend_state_push();
gs_reset_blend_state();
while (item) {
if (obs_source_removed(item->source)) {
struct obs_scene_item *del_item = item;
item = item->next;
remove_without_release(del_item);
da_push_back(remove_items, &del_item);
continue;
}
if (source_size_changed(item))
update_item_transform(item);
if (item->user_visible) {
gs_matrix_push();
gs_matrix_mul(&item->draw_transform);
obs_source_video_render(item->source);
gs_matrix_pop();
}
item = item->next;
}
gs_blend_state_pop();
video_unlock(scene);
for (size_t i = 0; i < remove_items.num; i++)
obs_sceneitem_release(remove_items.array[i]);
da_free(remove_items);
UNUSED_PARAMETER(effect);
}
static void scene_enum_sources(void *data,
obs_source_enum_proc_t enum_callback,
void *param)
{
struct obs_scene *scene = data;
struct obs_scene_item *item;
struct obs_scene_item *next;
full_lock(scene);
item = scene->first_item;
while (item) {
next = item->next;
obs_sceneitem_addref(item);
if (os_atomic_load_long(&item->active_refs) > 0)
enum_callback(scene->source, item->source, param);
obs_sceneitem_release(item);
item = next;
}
full_unlock(scene);
}
void obs_scene_enum_items(obs_scene_t scene,
bool (*callback)(obs_scene_t, obs_sceneitem_t, void*),
void *param)
{
struct obs_scene_item *item;
pthread_mutex_lock(&scene->mutex);
item = scene->first_item;
while (item) {
struct obs_scene_item *next = item->next;
obs_sceneitem_addref(item);
if (!callback(scene, item, param))
break;
obs_sceneitem_release(item);
item = next;
}
pthread_mutex_unlock(&scene->mutex);
}