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, 27 insertions, 1 deletions

diff --git a/source/blender/blenkernel/intern/sound.c b/source/blender/blenkernel/intern/sound.c
index 64ba9ed362a..6e8b26c6ca6 100644
--- a/source/blender/blenkernel/intern/sound.c
+++ b/source/blender/blenkernel/intern/sound.c
@@ -32,10 +32,11 @@
 #include "BKE_context.h"
 #include "BKE_library.h"
 #include "BKE_packedFile.h"
-#include "BKE_fcurve.h"
 #include "BKE_animsys.h"
 #include "BKE_sequencer.h"
 
+// evil global ;-)
+static int sound_cfra;
 
 struct bSound* sound_new_file(struct Main *bmain, const char *filename)
 {
@@ -411,6 +412,31 @@ void sound_update_scene_sound(void* handle, struct bSound* sound)
 	AUD_updateSequenceSound(handle, sound->playback_handle);
 }
 
+void sound_set_cfra(int cfra)
+{
+	sound_cfra = cfra;
+}
+
+void sound_set_scene_volume(struct Scene *scene, float volume)
+{
+	AUD_setSequencerAnimData(scene->sound_scene, AUD_AP_VOLUME, CFRA, &volume, (scene->audio.flag & AUDIO_VOLUME_ANIMATED) != 0);
+}
+
+void sound_set_scene_sound_volume(void* handle, float volume, char animated)
+{
+	AUD_setSequenceAnimData(handle, AUD_AP_VOLUME, sound_cfra, &volume, animated);
+}
+
+void sound_set_scene_sound_pitch(void* handle, float pitch, char animated)
+{
+	AUD_setSequenceAnimData(handle, AUD_AP_PITCH, sound_cfra, &pitch, animated);
+}
+
+void sound_set_scene_sound_pan(void* handle, float pan, char animated)
+{
+	AUD_setSequenceAnimData(handle, AUD_AP_PANNING, sound_cfra, &pan, animated);
+}
+
 void sound_update_sequencer(struct Main* main, struct bSound* sound)
 {
 	struct Scene* scene;