OBS Studio Frontend API ======================= The OBS Studio frontend API is the API specific to OBS Studio itself. .. code:: cpp #include Structures/Enumerations ----------------------- .. type:: enum obs_frontend_event Specifies a front-end event. Can be one of the following values: - **OBS_FRONTEND_EVENT_STREAMING_STARTING** Triggered when streaming is starting. - **OBS_FRONTEND_EVENT_STREAMING_STARTED** Triggered when streaming has successfully started. - **OBS_FRONTEND_EVENT_STREAMING_STOPPING** Triggered when streaming is stopping. - **OBS_FRONTEND_EVENT_STREAMING_STOPPED** Triggered when streaming has fully stopped. - **OBS_FRONTEND_EVENT_RECORDING_STARTING** Triggered when recording is starting. - **OBS_FRONTEND_EVENT_RECORDING_STARTED** Triggered when recording has successfully started. - **OBS_FRONTEND_EVENT_RECORDING_STOPPING** Triggered when recording is stopping. - **OBS_FRONTEND_EVENT_RECORDING_STOPPED** Triggered when recording has fully stopped. - **OBS_FRONTEND_EVENT_SCENE_CHANGED** Triggered when the current scene has changed. - **OBS_FRONTEND_EVENT_SCENE_LIST_CHANGED** Triggered when a scenes has been added/removed/reordered by the user. - **OBS_FRONTEND_EVENT_TRANSITION_CHANGED** Triggered when the current transition has changed by the user. - **OBS_FRONTEND_EVENT_TRANSITION_STOPPED** Triggered when a transition has completed. - **OBS_FRONTEND_EVENT_TRANSITION_LIST_CHANGED** Triggered when the user adds/removes transitions. - **OBS_FRONTEND_EVENT_SCENE_COLLECTION_CHANGED** Triggered when the user has changed the current scene collection. - **OBS_FRONTEND_EVENT_SCENE_COLLECTION_LIST_CHANGED** Triggered when the user has added/removed/renamed scene collections. - **OBS_FRONTEND_EVENT_PROFILE_CHANGED** Triggered when the user has changed the current profile. - **OBS_FRONTEND_EVENT_PROFILE_LIST_CHANGED** Triggered when the user has added/removed/renamed profiles. - **OBS_FRONTEND_EVENT_EXIT** Triggered when the program is about to exit. - **OBS_FRONTEND_EVENT_REPLAY_BUFFER_STARTING** Triggered when the replay buffer is starting. - **OBS_FRONTEND_EVENT_REPLAY_BUFFER_STARTED** Triggered when the replay buffer has successfully started. - **OBS_FRONTEND_EVENT_REPLAY_BUFFER_STOPPING** Triggered when the replay buffer is stopping. - **OBS_FRONTEND_EVENT_REPLAY_BUFFER_STOPPED** Triggered when the replay buffer has fully stopped. - **OBS_FRONTEND_EVENT_STUDIO_MODE_ENABLED** Triggered when the user has turned on studio mode. - **OBS_FRONTEND_EVENT_STUDIO_MODE_DISABLED** Triggered when the user has turned off studio mode. - **OBS_FRONTEND_EVENT_PREVIEW_SCENE_CHANGED** Triggered when the current preview scene has changed in studio mode. - **OBS_FRONTEND_EVENT_SCENE_COLLECTION_CLEANUP** Triggered when a scene collection has been completely unloaded, and the program is either about to load a new scene collection, or the program is about to exit. .. type:: struct obs_frontend_source_list - DARRAY(obs_source_t*) **sources** Example usage: .. code:: cpp struct obs_frontend_source_list scenes; obs_frontend_get_scenes(&scenes); for (size_t i = 0; i < scenes.num; i++) { obs_source_t *source = scenes.sources.array[i]; [...] } obs_frontend_source_list_free(&scenes); .. type:: typedef void (*obs_frontend_cb)(void *private_data) Frontend tool menu callback. .. type:: typedef void (*obs_frontend_event_cb)(enum obs_frontend_event event, void *private_data) Frontend event callback. .. type:: typedef void (*obs_frontend_save_cb)(obs_data_t *save_data, bool saving, void *private_data) Frontend save/load callback. .. type:: typedef bool (*obs_frontend_translate_ui_cb)(const char *text, const char **out) Translation callback. Functions --------- .. function:: void obs_frontend_source_list_free(struct obs_frontend_source_list *source_list) Releases sources within a source list and frees the list. :param source_list: Source list to free. --------------------------------------- .. function:: void *obs_frontend_get_main_window(void) :return: The QMainWindow pointer to the OBS Studio window. --------------------------------------- .. function:: void *obs_frontend_get_main_window_handle(void) :return: The native window handle of the OBS Studio window. --------------------------------------- .. function:: char **obs_frontend_get_scene_names(void) :return: The scene name list, ending with NULL. The list is stored within one contiguous segment of memory, so freeing the returned pointer with :c:func:`bfree()` will free the entire list. --------------------------------------- .. function:: void obs_frontend_get_scenes(struct obs_frontend_source_list *sources) :param sources: Pointer to a :c:type:`obs_frontend_source_list` structure to receive the list of reference-incremented scenes. Release with :c:func:`obs_frontend_source_list_free`. --------------------------------------- .. function:: obs_source_t *obs_frontend_get_current_scene(void) :return: A new reference to the currently active scene. --------------------------------------- .. function:: void obs_frontend_set_current_scene(obs_source_t *scene) :param scene: The scene to set as the current scene. --------------------------------------- .. function:: void obs_frontend_get_transitions(struct obs_frontend_source_list *sources) :param sources: Pointer to a :c:type:`obs_frontend_source_list` structure to receive the list of reference-incremented transitions. Release with :c:func:`obs_frontend_source_list_free`. --------------------------------------- .. function:: obs_source_t *obs_frontend_get_current_transition(void) :return: A new reference to the currently active transition. --------------------------------------- .. function:: void obs_frontend_set_current_transition(obs_source_t *transition) :param transition: The transition to set as the current transition. --------------------------------------- .. function:: int obs_frontend_get_transition_duration(void) :return: The transition duration (in milliseconds) currently set in the UI. --------------------------------------- .. function:: void obs_frontend_set_transition_duration(int duration) :param duration: Desired transition duration (in milliseconds) --------------------------------------- .. function:: char **obs_frontend_get_scene_collections(void) :return: The list of profile names, ending with NULL. The list is stored within one contiguous segment of memory, so freeing the returned pointer with :c:func:`bfree()` will free the entire list. --------------------------------------- .. function:: char *obs_frontend_get_current_scene_collection(void) :return: A new pointer to the current scene collection name. Free with :c:func:`bfree()`. --------------------------------------- .. function:: void obs_frontend_set_current_scene_collection(const char *collection) :param profile: Name of the scene collection to activate. --------------------------------------- .. function:: char **obs_frontend_get_profiles(void) :return: The list of profile names, ending with NULL. The list is stored within one contiguous segment of memory, so freeing the returned pointer with :c:func:`bfree()` will free the entire list. --------------------------------------- .. function:: char *obs_frontend_get_current_profile(void) :return: A new pointer to the current profile name. Free with :c:func:`bfree()`. --------------------------------------- .. function:: void obs_frontend_set_current_profile(const char *profile) :param profile: Name of the profile to activate. --------------------------------------- .. function:: void obs_frontend_add_event_callback(obs_frontend_event_cb callback, void *private_data) Adds a callback that will be called when a frontend event occurs. See :c:type:`obs_frontend_event` on what sort of events can be triggered. :param callback: Callback to use when a frontend event occurs. :param private_data: Private data associated with the callback. --------------------------------------- .. function:: void obs_frontend_remove_event_callback(obs_frontend_event_cb callback, void *private_data) Removes an event callback. :param callback: Callback to remove. :param private_data: Private data associated with the callback. --------------------------------------- .. function:: void obs_frontend_add_save_callback(obs_frontend_save_cb callback, void *private_data) Adds a callback that will be called when the current scene collection is being saved/loaded. :param callback: Callback to use when saving/loading a scene collection. :param private_data: Private data associated with the callback. --------------------------------------- .. function:: void obs_frontend_remove_save_callback(obs_frontend_save_cb callback, void *private_data) Removes a save/load callback. :param callback: Callback to remove. :param private_data: Private data associated with the callback. --------------------------------------- .. function:: void obs_frontend_add_preload_callback(obs_frontend_save_cb callback, void *private_data) Adds a callback that will be called right before a scene collection is loaded. Useful if you :param callback: Callback to use when pre-loading. :param private_data: Private data associated with the callback. --------------------------------------- .. function:: void obs_frontend_remove_preload_callback(obs_frontend_save_cb callback, void *private_data) Removes a pre-load callback. :param callback: Callback to remove. :param private_data: Private data associated with the callback. --------------------------------------- .. function:: void obs_frontend_push_ui_translation(obs_frontend_translate_ui_cb translate) Pushes a UI translation callback. This allows a front-end plugin to intercept when Qt is automatically generating translating data. Typically this is just called with obs_module_get_string. :param translate: The translation callback to use. --------------------------------------- .. function:: void obs_frontend_pop_ui_translation(void) Pops the current UI translation callback. --------------------------------------- .. function:: void obs_frontend_streaming_start(void) Starts streaming. --------------------------------------- .. function:: void obs_frontend_streaming_stop(void) Stops streaming. --------------------------------------- .. function:: bool obs_frontend_streaming_active(void) :return: *true* if streaming active, *false* otherwise. --------------------------------------- .. function:: void obs_frontend_recording_start(void) Starts recording. --------------------------------------- .. function:: void obs_frontend_recording_stop(void) Stops recording. --------------------------------------- .. function:: bool obs_frontend_recording_active(void) :return: *true* if recording active, *false* otherwise. --------------------------------------- .. function:: void obs_frontend_replay_buffer_start(void) Starts replay buffer. --------------------------------------- .. function:: void obs_frontend_replay_buffer_stop(void) Stops replay buffer. --------------------------------------- .. function:: void obs_frontend_replay_buffer_save(void) Saves a replay if the replay buffer is active. --------------------------------------- .. function:: bool obs_frontend_replay_buffer_active(void) :return: *true* if replay buffer active, *false* otherwise. --------------------------------------- .. function:: void obs_frontend_save(void) Saves the current scene collection. --------------------------------------- .. function:: obs_output_t *obs_frontend_get_streaming_output(void) :return: A new reference to the current streaming output. --------------------------------------- .. function:: obs_output_t *obs_frontend_get_recording_output(void) :return: A new reference to the current srecording output. --------------------------------------- .. function:: obs_output_t *obs_frontend_get_replay_buffer_output(void) :return: A new reference to the current replay buffer output. --------------------------------------- .. function:: void obs_frontend_set_streaming_service(obs_service_t *service) Sets the current streaming service to stream with. :param service: The streaming service to set. --------------------------------------- .. function:: obs_service_t *obs_frontend_get_streaming_service(void) :return: A new reference to the current streaming service object. --------------------------------------- .. function:: void obs_frontend_save_streaming_service(void) Saves the current streaming service data. --------------------------------------- .. function:: bool obs_frontend_preview_program_mode_active(void) :return: *true* if studio mode is active, *false* otherwise. --------------------------------------- .. function:: void obs_frontend_set_preview_program_mode(bool enable) Activates/deactivates studio mode. :param enable: *true* to activate studio mode, *false* to deactivate studio mode. --------------------------------------- .. function:: void obs_frontend_preview_program_trigger_transition(void) Triggers a preview-to-program transition if studio mode is active. --------------------------------------- .. function:: obs_source_t *obs_frontend_get_current_preview_scene(void) :return: A new reference to the current preview scene if studio mode is active, or the current scene if studio mode is not active. --------------------------------------- .. function:: void obs_frontend_set_current_preview_scene(obs_source_t *scene) Sets the current preview scene in studio mode, or the currently active scene if not in studio mode. :param scene: The scene to set as the current preview.