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engines/qdengine/system/graphics/rle_compress.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 QDENGINE_SYSTEM_GRAPHICS_RLE_COMPRESS_H
+#define QDENGINE_SYSTEM_GRAPHICS_RLE_COMPRESS_H
+
+
+namespace QDEngine {
+
+//! Массив, сжатый методом RLE.
+class RLEBuffer {
+public:
+	RLEBuffer();
+	RLEBuffer(const RLEBuffer &buf);
+	~RLEBuffer();
+
+	RLEBuffer &operator = (const RLEBuffer &buf);
+
+	bool encode(int sx, int sy, const byte *buf);
+
+	bool decode_line(int y, byte *out_buf) const;
+
+	bool decode_line(int y, int buffer_id = 0) const;
+
+	bool decode_pixel(int x, int y, uint32 &pixel);
+
+	static const byte *get_buffer(int buffer_id);
+
+	void resize_buffers();
+
+	uint32 size();
+	int line_length();
+	int line_header_length(int line_num) const;
+
+	uint32 header_size() const {
+		return _header.size();
+	}
+	uint32 data_size() const {
+		return _data.size();
+	}
+
+	const int8 *header_ptr(int y = 0) const {
+		return &*(_header.begin() + _header_offset[y]);
+	}
+	const uint32 *data_ptr(int y = 0) const {
+		return &*(_data.begin() + _data_offset[y]);
+	}
+
+	bool load(Common::SeekableReadStream *fh);
+
+	bool convert_data(int bits_per_pixel = 16);
+
+	static void releaseBuffers();
+
+private:
+	Std::vector<uint32> _header_offset;
+	Std::vector<uint32> _data_offset;
+
+	Std::vector<int8> _header;
+	Std::vector<uint32> _data;
+
+	int _bits_per_pixel;
+
+	friend bool operator == (const RLEBuffer &buf1, const RLEBuffer &buf2);
+};
+
+} // namespace QDEngine
+
+#endif // QDENGINE_SYSTEM_GRAPHICS_RLE_COMPRESS_H