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43 lines
1.6 KiB
C++
Executable file
43 lines
1.6 KiB
C++
Executable file
#ifndef __waveformfile_riffwave_hpp__
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#define __waveformfile_riffwave_hpp__
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#include "waveformfile.hpp"
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class WaveformFile_RiffWave : public WaveformFile {
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private:
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JFAudFile *fh;
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bool isvalid, isusable;
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int samplerate;
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int channels;
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int bytespersample;
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int datastart, datalen, datapos;
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bool ReadChunkHead(char type[4], int *len);
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bool FindChunk(const char *type, int *start, int *len);
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unsigned int TotalSamples() const { return datalen / (channels*bytespersample); }
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int LoadSamples(PcmBuffer *buf, bool loop);
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public:
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WaveformFile_RiffWave(JFAudFile *);
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virtual ~WaveformFile_RiffWave();
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virtual bool IsValid() const { return isvalid; }
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virtual bool IsUsable() const { return isusable; }
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static InitState Init() { return InitOK; }
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static bool Uninit() { return true; }
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// these static versions retrieve the identifiers for this particular class
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static Format GetClassFormat() { return FORMAT_RIFFWAV; }
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static const char *GetClassFormatName() { return "RIFF WAVE"; }
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// these virtual versions return the identifier based on whether the file is valid or not
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virtual Format GetFormat() const { return isvalid ? FORMAT_RIFFWAV : FORMAT_UNKNOWN; }
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virtual const char *GetFormatName() const { return isvalid ? "RIFF WAVE" : NULL; }
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virtual PcmBuffer *ReadSamples(unsigned int nsamps = 0, bool loop = false);
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virtual float GetPlayTime(void) const { return isvalid ? (float)TotalSamples() / (float)samplerate : 0.0; }
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virtual unsigned int GetPCMLength(void) const { return !isvalid ? 0 : TotalSamples(); }
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};
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#endif
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