1 files changed, 56 insertions, 0 deletions
diff --git a/graphics/conversion.h b/graphics/conversion.h
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+/* 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+#ifndef GRAPHICS_CONVERSION_H
+#define GRAPHICS_CONVERSION_H
+
+#include "common/scummsys.h"
+#include "graphics/pixelformat.h"
+namespace Graphics {
+
+// TODO: generic YUV to RGB pixel conversion
+// TODO: generic YUV to RGB blit
+
+/**
+ * Convert a rectangle from the one format to another, and blits it.
+ *
+ * @param dstbuf	the buffer which will recieve the converted graphics data
+ * @param srcbuf	the buffer containing the original graphics data
+ * @param dstpitch	width in bytes of one full line of the dest buffer
+ * @param srcpitch	width in bytes of one full line of the source buffer
+ * @param w			the width of the graphics data
+ * @param h			the height of the graphics data
+ * @param dstFmt	the desired pixel format
+ * @param srcFmt	the original pixel format
+ * @return			true if conversion completes successfully, 
+ *					false if there is an error.
+ *
+ * @note This implementation currently requires the destination's 
+ *		 format have at least as high a bitdepth as the source's.
+ *
+ */
+bool crossBlit(byte *dst, const byte *src, int dstpitch, int srcpitch, 
+						int w, int h, Graphics::PixelFormat dstFmt, Graphics::PixelFormat srcFmt);
+} // end of namespace Graphics
+#endif //GRAPHICS_CONVERSION_H
+\ No newline at end of file