removed additional back buffer in smush

svn-id: r6802

3 files changed, 33 insertions, 13 deletions

diff --git a/scumm/smush/brenderer.h b/scumm/smush/brenderer.h
index 52dbc07706..288e673d18 100644
--- a/scumm/smush/brenderer.h
+++ b/scumm/smush/brenderer.h
@@ -47,9 +47,9 @@ protected:
 protected:
 	const char *getFilename() const { return _fname; };	//!< accessor for animation filename
 	int32 getNbframes() const { return _nbframes; };	//!< accessor for number of frames
-	int32 getWidth() const { return _width; };	//!< accessor for current width
-	int32 getHeight() const { return _height; };	//!< accessor for current height
-	const char *data() const { return _data; };	//!< accessor for current frame buffer
+	virtual int32 getWidth() const { return _width; };	//!< accessor for current width
+	virtual int32 getHeight() const { return _height; };	//!< accessor for current height
+	virtual const char *data() const { return _data; };	//!< accessor for current frame buffer
 	void clean();	//!< memory cleanup (deletes frame buffer)
 	void setFrame(int32 f) { _frame = f; };	//!< allows to change the frame number
 public:
diff --git a/scumm/smush/scumm_renderer.cpp b/scumm/smush/scumm_renderer.cpp
index ed5f3f0284..a3721ce0cd 100644
--- a/scumm/smush/scumm_renderer.cpp
+++ b/scumm/smush/scumm_renderer.cpp
@@ -209,6 +209,26 @@ static void smush_handler(void *engine) {
 	s_renderer->update();
 }
 
+bool ScummRenderer::initFrame(const Point &p) {
+	clean();
+	_width = p.getX();
+	_height = p.getY();
+	assert(_width && _height);
+	_data = (char *)_scumm->virtscr[0].screenPtr + _scumm->virtscr[0].xstart;
+	return true;
+}
+
+void ScummRenderer::clean() {
+	_data = 0;
+	_width = _height = 0;
+}
+
+char *ScummRenderer::lockFrame(int32 frame) {
+	_frame = frame; 
+	if(!_data) error("no allocated image buffer in lock_frame");
+	return _data;
+}
+
 Mixer *ScummRenderer::getMixer() {
 	if(_smixer == 0) {
 		_smixer = new ScummMixer(_scumm->_mixer);
@@ -233,17 +253,7 @@ ScummRenderer::~ScummRenderer() {
 	}
 	_scumm->_sound->pauseBundleMusic(false);
 
-
 	_scumm->_fullRedraw = 1;
-#if 0
-	// FIXME - enabling this breaks the COMI demo. OTOH I am not aware
-	// what disabling this breaks... if anybody knows of any regressions
-	// turning this off causes, please tell me.
-	_scumm->redrawBGAreas();
-	for (int32 i = 0; i < _scumm->NUM_ACTORS; i++)
-		_scumm->derefActor(i)->needRedraw = true;
-	_scumm->processActors();
-#endif
 }
 
 bool ScummRenderer::wait(int32 ms) {
diff --git a/scumm/smush/scumm_renderer.h b/scumm/smush/scumm_renderer.h
index e8779fd966..c4a7274854 100644
--- a/scumm/smush/scumm_renderer.h
+++ b/scumm/smush/scumm_renderer.h
@@ -46,12 +46,22 @@ private:
 	ScummMixer *_smixer;
 	uint32 _insaneSpeed;
 	volatile int _pending_updates;
+	int32 _width;			//!< The current frame's width
+	int32 _height;		//!< The current frame's height
+	int32 _frame;			//!< The current frame number
+	char *_data;		//!< The current frame buffer
 public:
 	ScummRenderer(Scumm *scumm, uint32 speed);
 	virtual ~ScummRenderer();
+	virtual int32 getWidth() const { return _width; };	//!< accessor for current width
+	virtual int32 getHeight() const { return _height; };	//!< accessor for current height
+	virtual const char *data() const { return _data; };	//!< accessor for current frame buffer
 	virtual bool wait(int32 ms);
 	bool update();
 protected:
+	virtual bool initFrame(const Point &size);
+	virtual char *lockFrame(int32 frame);
+	virtual void clean();
 	virtual bool startDecode(const char *fname, int32 version, int32 nbframes);
 	virtual bool setPalette(const Palette & pal);
 	virtual void save(int32 frame = -1);