framebuffer: add accelerator for STi framebuffer

also add a generic helper class for other accelerated
framebuffer implementations

src/driver/fb_accel.h

@@ -0,0 +1,81 @@
+/*
+	Copyright (C) 2007-2013 Stefan Seyfried
+
+	License: GPL
+
+	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, see <http://www.gnu.org/licenses/>.
+
+	private functions for the fbaccel class (only used in CFrameBuffer)
+*/
+
+
+#ifndef __fbaccel__
+#define __fbaccel__
+#include <config.h>
+#include <OpenThreads/Mutex>
+#include <OpenThreads/ScopedLock>
+#include <OpenThreads/Thread>
+#include <OpenThreads/Condition>
+#include "fb_generic.h"
+
+#if HAVE_SPARK_HARDWARE
+#define PARTIAL_BLIT 1
+#endif
+
+class CFbAccel
+	: public CFrameBuffer
+{
+	public:
+		CFbAccel();
+		~CFbAccel();
+		void paintBoxRel(const int x, const int y, const int dx, const int dy, const fb_pixel_t col, int radius, int type);
+		virtual void paintRect(const int x, const int y, const int dx, const int dy, const fb_pixel_t col);
+};
+
+class CFbAccelSTi
+	: public OpenThreads::Thread, public CFbAccel
+{
+	private:
+		void run(void);
+		void blit(void);
+		void _blit(void);
+		bool blit_thread;
+		bool blit_pending;
+		OpenThreads::Condition blit_cond;
+		OpenThreads::Mutex blit_mutex;
+		fb_pixel_t *backbuffer;
+#ifdef PARTIAL_BLIT
+		struct {
+			int xs;
+			int ys;
+			int xe;
+			int ye;
+		} to_blit;
+		uint32_t last_xres;
+#endif
+	public:
+		CFbAccelSTi();
+		~CFbAccelSTi();
+		void init(const char * const);
+		int setMode(unsigned int xRes, unsigned int yRes, unsigned int bpp);
+		void paintRect(const int x, const int y, const int dx, const int dy, const fb_pixel_t col);
+		void blit2FB(void *fbbuff, uint32_t width, uint32_t height, uint32_t xoff, uint32_t yoff, uint32_t xp, uint32_t yp, bool transp);
+		void waitForIdle(const char *func = NULL);
+		void mark(int x, int y, int dx, int dy);
+		fb_pixel_t * getBackBufferPointer() const;
+		void setBlendMode(uint8_t);
+		void setBlendLevel(int);
+};
+
+#endif