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engines/scumm/smush/codec47.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 3 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/>.
+ *
+ */
+
+#ifndef SCUMM_SMUSH_CODEC_47_H
+#define SCUMM_SMUSH_CODEC_47_H
+
+#include "common/scummsys.h"
+
+namespace Scumm {
+
+class SmushDeltaGlyphsDecoder {
+private:
+
+	int32 _deltaSize;
+	byte *_deltaBufs[2];
+	byte *_deltaBuf;
+	byte *_curBuf;
+	int32 _prevSeqNb;
+	int _lastTableWidth;
+	const byte *_dSrc, *_paramPtr;
+	int _dPitch;
+	int32 _offset1, _offset2;
+	byte *_tableBig;
+	byte *_tableSmall;
+	int16 _table[256];
+	int32 _frameSize;
+	int _width, _height;
+
+	void makeTablesInterpolation(int param);
+	void makeCodecTables(int width);
+	void level1(byte *d_dst);
+	void level2(byte *d_dst);
+	void level3(byte *d_dst);
+	void decode2(byte *dst, const byte *src, int width, int height, const byte *param_ptr);
+
+public:
+	SmushDeltaGlyphsDecoder(int width, int height);
+	~SmushDeltaGlyphsDecoder();
+	bool decode(byte *dst, const byte *src);
+};
+
+} // End of namespace Scumm
+
+#endif