3D Audio GSoC:

Implemented basic audio animation.

* AnimatableProperty: Propper cache writing and spline interpolation for reading (the solution for stair steps in audio animation)
* Animatable properties so far are: volume, pitch, panning
* Users note: Changing the pitch of a sound results in wrong seeking, due to the resulting playback length difference.
* Users note: Panning only works for mono sources, values are in the range [-2..2], this basically controls the angle of the sound, 0 is front, -1 left, 1 right and 2 and -2 are back. Typical stereo panning only supports [-1..1].
* Disabled animation of audio related ffmpeg output parameters.
* Scene Audio Panel: 3D Listener settings also for Renderer, new Volume property (animatable!), Update/Bake buttons for animation problems, moved sampling rate and channel count here

1 files changed, 10 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_sound.h b/source/blender/blenkernel/BKE_sound.h
index 549dc475320..5ccb34338af 100644
--- a/source/blender/blenkernel/BKE_sound.h
+++ b/source/blender/blenkernel/BKE_sound.h
@@ -96,6 +96,16 @@ void sound_move_scene_sound(struct Scene *scene, void* handle, int startframe, i
 
 void sound_update_scene_sound(void* handle, struct bSound* sound);
 
+void sound_set_cfra(int cfra);
+
+void sound_set_scene_volume(struct Scene *scene, float volume);
+
+void sound_set_scene_sound_volume(void* handle, float volume, char animated);
+
+void sound_set_scene_sound_pitch(void* handle, float pitch, char animated);
+
+void sound_set_scene_sound_pan(void* handle, float pan, char animated);
+
 void sound_update_sequencer(struct Main* main, struct bSound* sound);
 
 void sound_play_scene(struct Scene *scene);