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127 lines
3.7 KiB
127 lines
3.7 KiB
/*
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Rosegarden
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A sequencer and musical notation editor.
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This program is Copyright 2000-2008
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Guillaume Laurent <glaurent@telegraph-road.org>,
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Chris Cannam <cannam@all-day-breakfast.com>,
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Richard Bown <bownie@bownie.com>
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The moral right of the authors to claim authorship of this work
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has been asserted.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#ifndef _MP3AUDIOFILE_H_
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#define _MP3AUDIOFILE_H_
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#ifdef HAVE_LIBMAD
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#include "AudioFile.h"
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namespace Rosegarden
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{
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class MP3AudioFile : public AudioFile
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{
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public:
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MP3AudioFile(const unsigned int &id,
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const std::string &name,
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const std::string &fileName);
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MP3AudioFile(const std::string &fileName,
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unsigned int channels,
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unsigned int sampleRate,
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unsigned int bytesPerSecond,
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unsigned int bytesPerSample,
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unsigned int bitsPerSample);
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~MP3AudioFile();
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// Override these methods for the WAV
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//
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virtual bool open();
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virtual bool write();
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virtual void close();
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// Show the information we have on this file
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//
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virtual void printStats();
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// Get all header information
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//
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void parseHeader();
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// Offset to start of sample data
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//
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virtual std::streampos getDataOffset();
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// Peak file name
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//
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virtual std::string getPeakFilename()
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{ return (m_fileName + std::string(".pk")); }
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// scan time was valid and successful.
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//
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virtual bool scanTo(const RealTime &time);
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virtual bool scanTo(std::ifstream *file, const RealTime &time);
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// Scan forward in a file by a certain amount of time
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//
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virtual bool scanForward(const RealTime &time);
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virtual bool scanForward(std::ifstream *file, const RealTime &time);
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// Return a number of samples - caller will have to
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// de-interleave n-channel samples themselves.
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//
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virtual std::string getSampleFrames(std::ifstream *file,
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unsigned int frames);
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virtual unsigned int getSampleFrames(std::ifstream *file,
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char *buf,
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unsigned int frames);
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virtual std::string getSampleFrames(unsigned int frames);
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// Return a number of (possibly) interleaved samples
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// over a time slice from current file pointer position.
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//
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virtual std::string getSampleFrameSlice(std::ifstream *file,
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const RealTime &time);
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virtual std::string getSampleFrameSlice(const RealTime &time);
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// Append a string of samples to an already open (for writing)
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// audio file.
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//
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virtual bool appendSamples(const std::string &buffer);
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virtual bool appendSamples(const char *buffer, unsigned int samples);
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// Get the length of the sample in Seconds/Microseconds
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//
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virtual RealTime getLength();
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virtual unsigned int getBytesPerFrame() { return 0; }
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//!!! NOT IMPLEMENTED YET
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//
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virtual bool decode(const unsigned char *sourceData,
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size_t sourceBytes,
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size_t targetSampleRate,
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size_t targetChannels,
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size_t targetFrames,
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std::vector<float *> &targetData,
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bool addToResultBuffers = false) { return false; }
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};
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}
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#endif // HAVE_LIBMAD
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#endif // _MP3AUDIOFILE_H_
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