VIDEO/GOB: Add CoktelDecoder::getDirtyRects()

This allows for the client code to only update the parts of the
video frames that actually changed.

svn-id: r51859

1 files changed, 8 insertions, 8 deletions

diff --git a/graphics/video/coktel_decoder.h b/graphics/video/coktel_decoder.h
index a4d12c5294..ea405974d6 100644
--- a/graphics/video/coktel_decoder.h
+++ b/graphics/video/coktel_decoder.h
@@ -33,6 +33,9 @@
 #ifndef GRAPHICS_VIDEO_COKTELDECODER_H
 #define GRAPHICS_VIDEO_COKTELDECODER_H
 
+#include "common/list.h"
+#include "common/rect.h"
+
 #include "graphics/video/video_decoder.h"
 
 #include "sound/mixer.h"
@@ -42,14 +45,6 @@ namespace Graphics {
 class CoktelDecoder : public FixedRateVideoDecoder {
 public:
 	struct State {
-		/** Left-most value of the updated rectangle. */
-		int16 left;
-		/** Top-most value of the updated rectangle. */
-		int16 top;
-		/** Right-most value of the updated rectangle. */
-		int16 right;
-		/** Bottom-most value of the updated rectangle. */
-		int16 bottom;
 		/** Set accordingly to what was done. */
 		uint32 flags;
 		/** The id of the spoken words. */
@@ -72,6 +67,9 @@ public:
 	/** Draw the video starting at this position within the video memory. */
 	void setXY(uint16 x, uint16 y);
 
+	/** Return a list of rectangles that changed in the last frame. */
+	const Common::List<Common::Rect> &getDirtyRects() const;
+
 	// VideoDecoder interface
 
 	void close();
@@ -102,6 +100,8 @@ protected:
 	bool    _ownSurface;
 	Surface _surface;
 
+	Common::List<Common::Rect> _dirtyRects;
+
 	Common::Rational _frameRate;
 
 	bool hasSurface();