3D Audio GSoC:

Improved waveform drawing in the sequencer.

* Drawing the waveform of a sequencer strip is now independent from whether the sound is cached or not.
* Improved drawing of the waveform in the sequencer (especially speed!).
* Making it possible to vertically zoom more in the sequencer to better see the waveform for lipsync.
* Fixed a bug which crashed blender on loading a sound file via ffmpeg.

1 files changed, 11 insertions, 1 deletions

diff --git a/source/blender/blenkernel/BKE_sound.h b/source/blender/blenkernel/BKE_sound.h
index c36532ee4cc..ecf0d7e459a 100644
--- a/source/blender/blenkernel/BKE_sound.h
+++ b/source/blender/blenkernel/BKE_sound.h
@@ -35,6 +35,8 @@
  *  \author nzc
  */
 
+#define SOUND_WAVE_SAMPLES_PER_SECOND 250
+
 struct PackedFile;
 struct bSound;
 struct bContext;
@@ -42,6 +44,12 @@ struct ListBase;
 struct Main;
 struct Sequence;
 
+typedef struct SoundWaveform
+{
+	int length;
+	float *data;
+} SoundWaveform;
+
 void sound_init_once(void);
 
 void sound_init(struct Main *main);
@@ -122,7 +130,9 @@ float sound_sync_scene(struct Scene *scene);
 
 int sound_scene_playing(struct Scene *scene);
 
-int sound_read_sound_buffer(struct bSound* sound, float* buffer, int length, float start, float end);
+void sound_free_waveform(struct bSound* sound);
+
+void sound_read_waveform(struct bSound* sound);
 
 int sound_get_channels(struct bSound* sound);