(API Change) Rename filtered_audio structure

Reanmed filtered_audio to obs_audio_data, to improve the naming and
prefix with obs_ for the sake with consistency with the rest of the API

libobs/obs-internal.h

@@ -319,7 +319,7 @@ struct obs_source {
 	audio_resampler_t               resampler;
 	audio_line_t                    audio_line;
 	pthread_mutex_t                 audio_mutex;
-	struct filtered_audio           audio_data;
+	struct obs_audio_data           audio_data;
 	size_t                          audio_storage_size;
 	float                           user_volume;
 	float                           present_volume;

libobs/obs-source.c

@@ -1354,8 +1354,8 @@ void obs_source_output_video(obs_source_t source,
 	}
 }
 
-static inline struct filtered_audio *filter_async_audio(obs_source_t source,
-		struct filtered_audio *in)
+static inline struct obs_audio_data *filter_async_audio(obs_source_t source,
+		struct obs_audio_data *in)
 {
 	size_t i;
 	for (i = source->filters.num; i > 0; i--) {
@@ -1463,7 +1463,7 @@ void obs_source_output_audio(obs_source_t source,
 		const struct source_audio *audio)
 {
 	uint32_t flags;
-	struct filtered_audio *output;
+	struct obs_audio_data *output;
 
 	if (!source || !audio)
 		return;

libobs/obs-source.h

@@ -248,8 +248,8 @@ struct obs_source_info {
 	 *                the data passed and return it, or you can defer audio
 	 *                data for later if time is needed for processing.
 	 */
-	struct filtered_audio *(*filter_audio)(void *data,
-			struct filtered_audio *audio);
+	struct obs_audio_data *(*filter_audio)(void *data,
+			struct obs_audio_data *audio);
 
 	/**
 	 * Called to enumerate all sources being used within this source.

libobs/obs.h

@@ -152,7 +152,7 @@ struct obs_video_info {
  * Sent to source filters via the filter_audio callback to allow filtering of
  * audio data
  */
-struct filtered_audio {
+struct obs_audio_data {
 	uint8_t             *data[MAX_AV_PLANES];
 	uint32_t            frames;
 	uint64_t            timestamp;