CWE-ou-minkata/Sources/Plasma/PubUtilLib/plAudioCore/plCachedFileReader.h

/*==LICENSE==*

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*==LICENSE==*/
//////////////////////////////////////////////////////////////////////////////
//                                                                          //
//  plCachedFileReader - Reads (and writes, how ironic) decompressed sound  //
//                       data that is temporarily held in a cache.          //
//                                                                          //
//// NOTES ///////////////////////////////////////////////////////////////////
//                                                                          //
//  2011.04.24 - Created by dpogue.                                         //
//                                                                          //
//////////////////////////////////////////////////////////////////////////////

#ifndef _plcachedfilereader_h
#define _plcachedfilereader_h

#include "plAudioFileReader.h"

//// Class Definition ////////////////////////////////////////////////////////

class plCachedFileReader : public plAudioFileReader
{
public:
    plCachedFileReader(const char *path,
                    plAudioCore::ChannelSelect whichChan = plAudioCore::kAll);
    virtual ~plCachedFileReader();

    virtual plWAVHeader &GetHeader();

    virtual void    Close();

    virtual uint32_t  GetDataSize();
    virtual float   GetLengthInSecs();

    virtual hsBool  SetPosition(uint32_t numBytes);
    virtual hsBool  Read(uint32_t numBytes, void *buffer);
    virtual uint32_t  NumBytesLeft();

    virtual hsBool  OpenForWriting(const char *path, plWAVHeader &header);
    virtual uint32_t  Write(uint32_t bytes, void *buffer);

    virtual hsBool  IsValid() { return fFileHandle != nil; }

protected:
    enum
    {
        kPCMFormatTag = 1
    };

    char            fFilename[512];
    FILE *          fFileHandle;
    plWAVHeader     fHeader;
    uint32_t          fDataLength;
    uint32_t          fCurPosition;

    void IError(const char *msg);
};

#endif //_plcachedfilereader_h