libobs: Add raw audio callback function

This complements the already existing raw video callback function.

docs/sphinx/reference-core.rst

@@ -473,6 +473,18 @@ Video, Audio, and Graphics
    :param callback:   The callback that receives raw video frames.
    :param param:      The private data associated with the callback.
 
+---------------------
+
+.. function:: void obs_add_raw_audio_callback(size_t mix_idx, const struct audio_convert_info *conversion, audio_output_callback_t callback, void *param)
+              void obs_remove_raw_raw_callback(size_t track, audio_output_callback_t callback, void *param)
+
+   Adds/removes a raw audio callback.  Allows the ability to obtain raw
+   audio data without necessarily using an output.
+
+   :param mix_idx:    Specifies audio track to get data from.
+   :param conversion: Specifies conversion requirements.  Can be NULL.
+   :param callback:   The callback that receives raw audio data.
+   :param param:      The private data associated with the callback.
 
 Primary signal/procedure handlers
 ---------------------------------

libobs/obs.c

@@ -2389,6 +2389,22 @@ void obs_remove_raw_video_callback(void (*callback)(void *param,
 	stop_raw_video(video->video, callback, param);
 }
 
+void obs_add_raw_audio_callback(size_t mix_idx,
+				const struct audio_convert_info *conversion,
+				audio_output_callback_t callback, void *param)
+{
+	struct obs_core_audio *audio = &obs->audio;
+	audio_output_connect(audio, mix_idx, conversion, callback, param);
+}
+
+void obs_remove_raw_audio_callback(size_t mix_idx,
+				   audio_output_callback_t callback,
+				   void *param)
+{
+	struct obs_core_audio *audio = &obs->audio;
+	audio_output_disconnect(audio, mix_idx, callback, param);
+}
+
 void obs_apply_private_data(obs_data_t *settings)
 {
 	if (!settings)

libobs/obs.h

@@ -768,6 +768,14 @@ EXPORT void obs_add_raw_video_callback(
 EXPORT void obs_remove_raw_video_callback(
 	void (*callback)(void *param, struct video_data *frame), void *param);
 
+EXPORT void
+obs_add_raw_audio_callback(size_t mix_idx,
+			   const struct audio_convert_info *conversion,
+			   audio_output_callback_t callback, void *param);
+EXPORT void obs_remove_raw_audio_callback(size_t mix_idx,
+					  audio_output_callback_t callback,
+					  void *param);
+
 EXPORT uint64_t obs_get_video_frame_time(void);
 
 EXPORT double obs_get_active_fps(void);