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/*
*
* $Id: k3baudiofile.cpp 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.
*/
#include "k3baudiofile.h"
#include "k3baudiodoc.h"
#include "k3baudiotrack.h"
#include <k3baudiodecoder.h>
K3bAudioFile::K3bAudioFile( K3bAudioDecoder* dec, K3bAudioDoc* doc )
: K3bAudioDataSource(),
m_doc(doc),
m_decoder(dec),
m_decodedData(0)
{
// FIXME: somehow make it possible to switch docs
doc->increaseDecoderUsage( m_decoder );
}
K3bAudioFile::K3bAudioFile( const K3bAudioFile& file )
: K3bAudioDataSource( file ),
m_doc( file.m_doc ),
m_decoder( file.m_decoder ),
m_decodedData(0)
{
m_doc->increaseDecoderUsage( m_decoder );
}
K3bAudioFile::~K3bAudioFile()
{
m_doc->decreaseDecoderUsage( m_decoder );
}
QString K3bAudioFile::type() const
{
return m_decoder->fileType();
}
QString K3bAudioFile::sourceComment() const
{
return m_decoder->filename().section( "/", -1 );
}
const QString& K3bAudioFile::filename() const
{
return m_decoder->filename();
}
bool K3bAudioFile::isValid() const
{
return m_decoder->isValid();
}
K3b::Msf K3bAudioFile::originalLength() const
{
return m_decoder->length();
}
bool K3bAudioFile::seek( const K3b::Msf& msf )
{
// this is valid once the decoder has been initialized.
if( startOffset() + msf <= lastSector() &&
m_decoder->seek( startOffset() + msf ) ) {
m_decodedData = msf.audioBytes();
return true;
}
else
return false;
}
int K3bAudioFile::read( char* data, unsigned int max )
{
// here we can trust on the decoder to always provide enough data
// see if we decode too much
if( max + m_decodedData > length().audioBytes() )
max = length().audioBytes() - m_decodedData;
int read = m_decoder->decode( data, max );
if( read > 0 )
m_decodedData += read;
return read;
}
K3bAudioDataSource* K3bAudioFile::copy() const
{
return new K3bAudioFile( *this );
}
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