Camera tracking integration

===========================

- Do not show frame boundary border when stabilization isn't enabled.
- Separate stabilization settings from display in clip editor.
  Now clip can contain stabilization data but still be displayed
  un-stabilized in clip editor.
- Internal changes in stabilization:
  * Use separated location/scale parameters rather than 4x4 matrix.
    In some ares "decomposed" data is needed (text draw functions, i.e.).
    Also such decomposed data could be used in compositor.
  * MovieClip now uses own structure for cache where additional data
    can be stored. MovieCache structure now one of properties in
    this new structure.
  * Get rid of stable image buffer stored in MovieClipStabilization
    structure. Pre-created buffer for scaling still stored there.
    This helps to keep playback realtime -- re-creating this buffer
    introduces ~15% slowdown.
- Added sliders to 2D stabilization panel which controls intensity
  of translation/scale which applies on shot.
- Added filter type to Stabilize2D compositor node. Supports nearest,
  bilinear and bicubic interpolation.
- After discussion with Sebastian and Francois added new node called
  Transformation. It can apply translation, rotation and scale. It's
  not the same thing as applying this components separately -- all
  transformation is happening inside "canvas". And it should be more
  accurate on interpolation and sub-pixel translation.
  Need to check order of applying translation/scale/rotation btw.
- Added output sockets to movie clip compositor node. They holds
  stabilization data which can be used by Translate or Transform
  nodes.
- Minor fix of UI issues in Display panel.

1 files changed, 3 insertions, 2 deletions

diff --git a/source/blender/blenkernel/BKE_tracking.h b/source/blender/blenkernel/BKE_tracking.h
index 85af75d2656..f3e2b083e17 100644
--- a/source/blender/blenkernel/BKE_tracking.h
+++ b/source/blender/blenkernel/BKE_tracking.h
@@ -87,8 +87,9 @@ void BKE_tracking_detect(struct MovieTracking *tracking, struct ImBuf *imbuf, in
 
 struct MovieTrackingTrack *BKE_tracking_indexed_bundle(struct MovieTracking *tracking, int bundlenr);
 
-void BKE_tracking_stabilization_matrix(struct MovieTracking *tracking, int framenr, int width, int height, float mat[4][4]);
-struct ImBuf *BKE_tracking_stabilize_shot(struct MovieTracking *tracking, int framenr, struct ImBuf *ibuf, float mat[4][4]);
+void BKE_tracking_stabilization_data(struct MovieTracking *tracking, int framenr, int width, int height, float loc[2], float *scale);
+struct ImBuf *BKE_tracking_stabilize_shot(struct MovieTracking *tracking, int framenr, struct ImBuf *ibuf, float loc[2], float *scale);
+void BKE_tracking_stabdata_to_mat4(float loc[2], float scale, float mat[4][4]);
 
 #define TRACK_SELECTED(track)				(((track->flag&TRACK_HIDDEN)==0) && ((track)->flag&SELECT || (track)->pat_flag&SELECT || (track)->search_flag&SELECT))
 #define TRACK_AREA_SELECTED(track, area)	(((track->flag&TRACK_HIDDEN)==0) && ((area)==TRACK_AREA_POINT?(track)->flag&SELECT : ((area)==TRACK_AREA_PAT?(track)->pat_flag&SELECT:(track)->search_flag&SELECT)))