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/*
*
* $Id: k3bmad.h 619556 2007-01-03 17:38:12Z trueg $
* Copyright (C) 2004 Sebastian Trueg <trueg@k3b.org>
*
* This file is part of the K3b project.
* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
*
* 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" for the exact licensing terms.
*/
#ifndef _K3B_MAD_H_
#define _K3B_MAD_H_
extern "C" {
#include <mad.h>
}
#include <qfile.h>
class K3bMad
{
public:
K3bMad();
~K3bMad();
bool open( const QString& filename );
/**
* @return true if the mad stream contains data
* false if there is no data left or an error occurred.
* In the latter case inputError() returns true.
*/
bool fillStreamBuffer();
/**
* Skip id3 tags.
*
* This will reset the input file.
*/
bool skipTag();
/**
* Find first frame and seek to the beginning of that frame.
* This is used to skip the junk that many mp3 files start with.
*/
bool seekFirstHeader();
bool eof() const;
bool inputError() const;
/**
* Current position in theinput file. This does NOT
* care about the status of the mad stream. Use streamPos()
* in that case.
*/
QIODevice::Offset inputPos() const;
/**
* Current absolut position of the decoder stream.
*/
QIODevice::Offset streamPos() const;
bool inputSeek( QIODevice::Offset pos );
void initMad();
void cleanup();
bool decodeNextFrame();
bool findNextHeader();
bool checkFrameHeader( mad_header* header ) const;
mad_stream* madStream;
mad_frame* madFrame;
mad_synth* madSynth;
mad_timer_t* madTimer;
private:
QFile m_inputFile;
bool m_madStructuresInitialized;
unsigned char* m_inputBuffer;
bool m_bInputError;
int m_channels;
int m_sampleRate;
};
#endif
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