vabsound.h

/* 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:
    VabSound(Common::SeekableReadStream* msfData, const DragonsEngine *_vm);

    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