MercurySoundSourceWAV.h

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#ifndef MERCURYSOUNDSOURCEWAV_H
#define MERCURYSOUNDSOURCEWAV_H

#include "MercuryString.h"
#include "MercuryFiles.h"
#include "MercuryUtil.h"

struct RiffChunk
{
    int id; //4 (big endian)
    unsigned int size; //4
};

struct WaveHead
{
    RiffChunk info;
    int type; //4 (big endian)
};

struct FmtChunk
{
    //the compiler pads this to size 28, it should be 26
//  RiffChunk info;
    unsigned short comp; //2
    unsigned short channels; //2
    unsigned int srate; //4
    unsigned int aBPS; //4
    unsigned short align; //2
    unsigned short sigBPS; //2
    unsigned short extraFormat; //2
};

enum SoundPlayState
{
    STOPPED,
    PLAYING,
    PAUSED
};

class MercurySoundSourceWAV
{
//  CLASS_RTTI( MercurySoundSourceWAV, MercurySoundSource );

    public:
        MercurySoundSourceWAV();
        ~MercurySoundSourceWAV();
        bool Open(const MString& path);
        float* ReadData(unsigned long samples);
        
        bool Play();
        bool Stop();
        void Pause(bool pause);
        inline bool IsPaused() const { return m_playState==PAUSED; }

        virtual MString GetType() { return "MercurySoundSourceWAV"; }
        virtual void GetAllTypes( MVector<MString> & vOut ) { vOut.push_back( "MercurySoundSourceWAV" ); }
        virtual bool IsTypeOf( const MString & sType ) { return sType == "MercurySoundSourceWAV"; }
    
        void SetDestroyOnStop(bool destroy) { m_destroyOnStop = destroy; }
    private:
        bool LocateAudioData();
        
        bool m_atAudioChunk;
        
        MercuryFile* m_file;
        unsigned long m_chunkSize;
        unsigned long m_chunkPosition;
        
        SoundPlayState m_playState;
        bool m_destroyOnStop;
};

#endif

/* 
 * Copyright (c) 2007 Joshua Allen
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *  -   Redistributions of source code must retain the above
 *      copyright notice, this list of conditions and the following disclaimer.
 *  -   Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in
 *      the documentation and/or other materials provided with the distribution.
 *  -   Neither the name of the Mercury Engine nor the names of its
 *      contributors may be used to endorse or promote products derived from
 *      this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

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