Initial commit

engines/made/sound.h

@@ -0,0 +1,74 @@
+/* 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 MADE_SOUND_H
+#define MADE_SOUND_H
+
+#include "common/array.h"
+
+namespace Made {
+
+class ManholeEgaSoundDecompressor {
+public:
+	void decompress(byte *source, byte *dest, uint32 size);
+protected:
+	byte *_source, *_dest;
+	uint32 _size;
+	uint16 _bitBuffer;
+	int _bitsLeft;
+	int32 _sample1, _sample2, _sample3, _sample4;
+	bool _writeFlag;
+	bool _eof;
+	int _mode;
+	int getBit();
+	void update0();
+	void update1();
+	void update2();
+	void update3();
+};
+
+struct SoundEnergyItem {
+	uint32 position;
+	byte energy;
+};
+
+typedef Common::Array<SoundEnergyItem> SoundEnergyArray;
+
+
+// Persistent data for decompressSound(). When calling decompressSound()
+// repeatedly (for the same stream), pass the same SoundDecoderData object to
+// ensure decoding properly resumes.
+class SoundDecoderData {
+public:
+	SoundDecoderData() {
+		memset(_soundBuffer, 0x80, sizeof(_soundBuffer));
+		_prevSample = 0;
+	}
+
+	byte _soundBuffer[1025];
+	int16 _prevSample;
+};
+
+void decompressSound(byte *source, byte *dest, uint16 chunkSize, uint16 chunkCount, SoundEnergyArray *soundEnergyArray = NULL, SoundDecoderData *decoderData = NULL);
+
+} // End of namespace Made
+
+#endif /* MADE_H */