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// -*- c-basic-offset: 4 -*-
/*
Rosegarden
A sequencer and musical notation editor.
This program is Copyright 2000-2008
Guillaume Laurent <glaurent@telegraph-road.org>,
Chris Cannam <cannam@all-day-breakfast.com>,
Richard Bown <bownie@bownie.com>
The moral right of the authors to claim authorship of this work
has been asserted.
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 2 of the
License, or (at your option) any later version. See the file
COPYING included with this distribution for more information.
*/
#ifndef _MP3AUDIOFILE_H_
#define _MP3AUDIOFILE_H_
#ifdef HAVE_LIBMAD
#include "AudioFile.h"
namespace Rosegarden
{
class MP3AudioFile : public AudioFile
{
public:
MP3AudioFile(const unsigned int &id,
const std::string &name,
const std::string &fileName);
MP3AudioFile(const std::string &fileName,
unsigned int channels,
unsigned int sampleRate,
unsigned int bytesPerSecond,
unsigned int bytesPerSample,
unsigned int bitsPerSample);
~MP3AudioFile();
// Override these methods for the WAV
//
virtual bool open();
virtual bool write();
virtual void close();
// Show the information we have on this file
//
virtual void printStats();
// Get all header information
//
void parseHeader();
// Offset to start of sample data
//
virtual std::streampos getDataOffset();
// Peak file name
//
virtual std::string getPeakFilename()
{ return (m_fileName + std::string(".pk")); }
// scan time was valid and successful.
//
virtual bool scanTo(const RealTime &time);
virtual bool scanTo(std::ifstream *file, const RealTime &time);
// Scan forward in a file by a certain amount of time
//
virtual bool scanForward(const RealTime &time);
virtual bool scanForward(std::ifstream *file, const RealTime &time);
// Return a number of samples - caller will have to
// de-interleave n-channel samples themselves.
//
virtual std::string getSampleFrames(std::ifstream *file,
unsigned int frames);
virtual unsigned int getSampleFrames(std::ifstream *file,
char *buf,
unsigned int frames);
virtual std::string getSampleFrames(unsigned int frames);
// Return a number of (possibly) interleaved samples
// over a time slice from current file pointer position.
//
virtual std::string getSampleFrameSlice(std::ifstream *file,
const RealTime &time);
virtual std::string getSampleFrameSlice(const RealTime &time);
// Append a string of samples to an already open (for writing)
// audio file.
//
virtual bool appendSamples(const std::string &buffer);
virtual bool appendSamples(const char *buffer, unsigned int samples);
// Get the length of the sample in Seconds/Microseconds
//
virtual RealTime getLength();
virtual unsigned int getBytesPerFrame() { return 0; }
//!!! NOT IMPLEMENTED YET
//
virtual bool decode(const unsigned char *sourceData,
size_t sourceBytes,
size_t targetSampleRate,
size_t targetChannels,
size_t targetFrames,
std::vector<float *> &targetData,
bool addToResultBuffers = false) { return false; }
};
}
#endif // HAVE_LIBMAD
#endif // _MP3AUDIOFILE_H_
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