imuse_sndmgr.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 GRIM_IMUSE_SNDMGR_H
#define GRIM_IMUSE_SNDMGR_H

#include "audio/mixer.h"
#include "audio/audiostream.h"

namespace Grim {

class McmpMgr;

class ImuseSndMgr {
public:

// MAX_IMUSE_SOUNDS needs to be hardcoded, ask aquadran
#define MAX_IMUSE_SOUNDS    16

// The numbering below fixes talking to Domino in his office
// and it also allows Manny to get the info for Mercedes
// Colomar, without this the game hangs at these points!
#define IMUSE_VOLGRP_BGND   0
#define IMUSE_VOLGRP_SFX    1
#define IMUSE_VOLGRP_VOICE  2
#define IMUSE_VOLGRP_MUSIC  3
#define IMUSE_VOLGRP_ACTION 4

private:
    struct Region {
        int32 offset;       // offset of region
        int32 length;       // length of region
    };

    struct Jump {
        int32 offset;       // jump offset position
        int32 dest;         // jump to dest position
        byte hookId;        // id of hook
        int16 fadeDelay;    // fade delay in ms
    };

public:

    struct SoundDesc {
        uint16 freq;        // frequency
        byte channels;      // stereo or mono
        byte bits;          // 8, 12, 16
        int numJumps;       // number of Jumps
        int numRegions;     // number of Regions
        Region *region;
        Jump *jump;
        bool endFlag;
        bool inUse;
        char name[32];
        McmpMgr *mcmpMgr;
        int type;
        int volGroupId;
        bool mcmpData;
        uint32 headerSize;
        Common::SeekableReadStream *inStream;
    };

private:

    SoundDesc _sounds[MAX_IMUSE_SOUNDS];
    bool _demo;

    bool checkForProperHandle(SoundDesc *soundDesc);
    SoundDesc *allocSlot();
    void parseSoundHeader(SoundDesc *sound, int &headerSize);
    void countElements(SoundDesc *sound);

public:

    ImuseSndMgr(bool demo);
    ~ImuseSndMgr();

    SoundDesc *openSound(const char *soundName, int volGroupId);
    void closeSound(SoundDesc *sound);
    SoundDesc *cloneSound(SoundDesc *sound);

    int getFreq(SoundDesc *sound);
    int getBits(SoundDesc *sound);
    int getChannels(SoundDesc *sound);
    bool isEndOfRegion(SoundDesc *sound, int region);
    int getNumRegions(SoundDesc *sound);
    int getNumJumps(SoundDesc *sound);
    int getRegionOffset(SoundDesc *sound, int region);
    int getRegionLength(SoundDesc *sound, int region);
    int getJumpIdByRegionAndHookId(SoundDesc *sound, int region, int hookId);
    int getRegionIdByJumpId(SoundDesc *sound, int jumpId);
    int getJumpHookId(SoundDesc *sound, int number);
    int getJumpFade(SoundDesc *sound, int number);

    int32 getDataFromRegion(SoundDesc *sound, int region, byte **buf, int32 offset, int32 size, int32 *flags);
};

} // end of namespace Grim

#endif