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, 6 insertions, 3 deletions

diff --git a/source/blender/blenkernel/intern/scene.c b/source/blender/blenkernel/intern/scene.c
index 42793e4b4a4..74126fd57a1 100644
--- a/source/blender/blenkernel/intern/scene.c
+++ b/source/blender/blenkernel/intern/scene.c
@@ -473,9 +473,10 @@ Scene *add_scene(const char *name)
 
 	BLI_strncpy(sce->r.engine, "BLENDER_RENDER", sizeof(sce->r.engine));
 
-	sce->audio.distance_model = 2.0;
-	sce->audio.doppler_factor = 1.0;
-	sce->audio.speed_of_sound = 343.3;
+	sce->audio.distance_model = 2.0f;
+	sce->audio.doppler_factor = 1.0f;
+	sce->audio.speed_of_sound = 343.3f;
+	sce->audio.volume = 1.0f;
 
 	BLI_strncpy(sce->r.pic, U.renderdir, sizeof(sce->r.pic));
 
@@ -1000,6 +1001,8 @@ void scene_update_for_newframe(Main *bmain, Scene *sce, unsigned int lay)
 {
 	float ctime = BKE_curframe(sce);
 	Scene *sce_iter;
+
+	sound_set_cfra(sce->r.cfra);
 	
 	/* clear animation overrides */
 	// XXX TODO...