PSP: refactoring/redesign of the backend

svn-id: r48632

1 files changed, 114 insertions, 0 deletions

diff --git a/backends/platform/psp/display_manager.h b/backends/platform/psp/display_manager.h
new file mode 100644
index 0000000000..de5fcf94c8
--- /dev/null
+++ b/backends/platform/psp/display_manager.h
@@ -0,0 +1,114 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/trunk/backends/platform/psp/osys_psp.cpp $
+ * $Id: osys_psp.cpp 47541 2010-01-25 01:39:44Z lordhoto $
+ *
+ */
+
+#ifndef PSP_DISPLAY_MAN_H
+#define PSP_DISPLAY_MAN_H 
+
+/**
+ *	Class used only by DisplayManager to start/stop GU rendering
+ */
+class MasterGuRenderer {
+public:
+	MasterGuRenderer() : _lastRenderTime(0) {}
+	void guInit();
+	void guPreRender();
+	void guPostRender();
+	void guShutDown();
+private:
+	static uint32 _displayList[];
+	uint32 _lastRenderTime;					// For measuring rendering
+	void guProgramDisplayBufferSizes();
+};
+
+class Screen;
+class Overlay;
+class Cursor;
+class PSPKeyboard;
+
+/**
+ *	Class that manages all display clients
+ */
+class DisplayManager {
+public:
+	enum GraphicsModeID {			///> Possible output formats onscreen
+		CENTERED_320X200,
+		CENTERED_435X272,
+		STRETCHED_480X272,
+		CENTERED_362X272
+	};
+	DisplayManager() : _screen(0), _cursor(0), _overlay(0), _keyboard(0), _lastUpdateTime(0), _graphicsMode(0) {}
+	~DisplayManager();
+	
+	void init();
+	void renderAll();
+	bool setGraphicsMode(int mode);
+	bool setGraphicsMode(const char *name);
+	int getGraphicsMode() const { return _graphicsMode; }
+    uint32 getDefaultGraphicsMode() const { return STRETCHED_480X272; }
+	const OSystem::GraphicsMode* getSupportedGraphicsModes() const { return _supportedModes; }
+
+	// Setters
+	void setScreen(Screen *screen) { _screen = screen; }
+	void setCursor(Cursor *cursor) { _cursor = cursor; }
+	void setOverlay(Overlay *overlay) { _overlay = overlay; }
+	void setKeyboard(PSPKeyboard *keyboard) { _keyboard = keyboard; }
+	void setSizeAndPixelFormat(uint width, uint height, const Graphics::PixelFormat *format);
+
+	// Getters
+	float getScaleX() { return _displayParams.scaleX; }
+	float getScaleY() { return _displayParams.scaleY; }
+	uint32 getOutputWidth() { return _displayParams.screenOutput.width; }
+	uint32 getOutputHeight() { return _displayParams.screenOutput.height; }
+	uint32 getOutputBitsPerPixel() { return _displayParams.outputBitsPerPixel; }
+	Common::List<Graphics::PixelFormat> getSupportedPixelFormats();
+
+private:
+	struct GlobalDisplayParams {
+		Dimensions screenOutput;
+		Dimensions screenSource;
+		float scaleX;
+		float scaleY;
+		uint32 outputBitsPerPixel;		// How many bits end up on-screen
+		GlobalDisplayParams() : scaleX(0.0f), scaleY(0.0f), outputBitsPerPixel(0) {}
+	};
+
+	// Pointers to DisplayClients
+	Screen *_screen;
+	Cursor *_cursor;
+	Overlay *_overlay;
+	PSPKeyboard *_keyboard;
+	
+	MasterGuRenderer _masterGuRenderer;
+	uint32 _lastUpdateTime;					// For limiting FPS
+	int _graphicsMode;
+	GlobalDisplayParams _displayParams;
+	static const OSystem::GraphicsMode _supportedModes[];
+	
+	void calculateScaleParams();	// calculates scaling factor
+	bool isTimeToUpdate();			// should we update the screen now	
+};
+
+
+#endif /* PSP_DISPLAY_MAN_H */