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engines/dragons/vabsound.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 DRAGONS_VABSOUND_H
+#define DRAGONS_VABSOUND_H
+
+#include "common/scummsys.h"
+
+namespace Common {
+	class SeekableReadStream;
+}
+
+namespace Audio {
+	class AudioStream;
+}
+
+namespace Dragons {
+class DragonsEngine;
+
+#define DRAGONS_VAB_NUM_PROG_ATTRS 128
+
+struct VabHeader {
+	char magic[4];
+
+	uint32 version;
+	uint32 vabId;
+	uint32 waveformSize;
+
+	uint16 reserved0;
+	uint16 numPrograms;
+	uint16 numTones;
+	uint16 numVAG;
+
+	uint8 masterVolume;
+	uint8 masterPan;
+	uint8 bankAttr1;
+	uint8 bankAttr2;
+
+	uint32 reserved1;
+};
+
+struct VabProgramAttr {
+	uint8 tones;
+	uint8 mvol;
+	uint8 prior;
+	uint8 mode;
+	uint8 mpan;
+	uint8 reserved0;
+	uint16 attr;
+	uint32 reserved1;
+	uint32 reserved2;
+};
+
+struct VabToneAttr {
+	uint8 prior;
+	uint8 mode;
+	uint8 vol;
+	uint8 pan;
+	uint8 center;
+	uint8 shift;
+	uint8 min;
+	uint8 max;
+	uint8 vibW;
+	uint8 vibT;
+	uint8 porW;
+	uint8 porT;
+	uint8 pbmin;
+	uint8 pbmax;
+	uint8 reserved1;
+	uint8 reserved2;
+	uint16 adsr1;
+	uint16 adsr2;
+	int16 prog;
+	int16 vag;
+	int16 reserved[4];
+};
+
+class VabSound {
+public:
+	/**
+	 * Creates a VAB file with both header and body (*.MSF). VabSound will dispose msfData
+	 * @param data
+	 */
+	VabSound(Common::SeekableReadStream* msfData, const DragonsEngine *_vm);
+
+	/**
+	 * Creates a VAB file with separate header and body (*.VH and *.VB). VabSound will dispose vhData & vbData
+	 *
+	 * @param dataHeader
+	 * @param dataBody
+	 */
+	VabSound(Common::SeekableReadStream* vhData, Common::SeekableReadStream* vbData);
+
+	~VabSound();
+
+	bool hasSound(uint16 program, uint16 key);
+	Audio::AudioStream *getAudioStream(uint16 program, uint16 key);
+
+private:
+	byte *_vbData;
+
+	VabHeader _header;
+	VabProgramAttr _programAttrs[DRAGONS_VAB_NUM_PROG_ATTRS];
+	VabToneAttr *_toneAttrs;
+
+	uint32 _vagSizes[0x100];
+	uint32 _vagOffsets[0x100];
+
+	void loadHeader(Common::SeekableReadStream *vhData);
+	void loadProgramAttributes(Common::SeekableReadStream *vhData);
+	void loadToneAttributes(Common::SeekableReadStream *vhData);
+
+	int16 getVagID(uint16 program, uint16 key);
+	int16 getBaseToneKey(uint16 program, uint16 key);
+
+	int getAdjustedSampleRate(int16 desiredKey, int16 baseToneKey);
+};
+
+} // End of namespace Dragons
+
+#endif //DRAGONS_VABSOUND_H