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113 lines
2.3 KiB
113 lines
2.3 KiB
/*
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*
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* $Id: k3baudiofile.cpp 619556 2007-01-03 17:38:12Z trueg $
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* Copyright (C) 2004 Sebastian Trueg <trueg@k3b.org>
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*
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* This file is part of the K3b project.
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* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* See the file "COPYING" for the exact licensing terms.
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*/
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#include "k3baudiofile.h"
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#include "k3baudiodoc.h"
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#include "k3baudiotrack.h"
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#include <k3baudiodecoder.h>
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K3bAudioFile::K3bAudioFile( K3bAudioDecoder* dec, K3bAudioDoc* doc )
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: K3bAudioDataSource(),
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m_doc(doc),
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m_decoder(dec),
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m_decodedData(0)
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{
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// FIXME: somehow make it possible to switch docs
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doc->increaseDecoderUsage( m_decoder );
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}
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K3bAudioFile::K3bAudioFile( const K3bAudioFile& file )
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: K3bAudioDataSource( file ),
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m_doc( file.m_doc ),
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m_decoder( file.m_decoder ),
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m_decodedData(0)
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{
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m_doc->increaseDecoderUsage( m_decoder );
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}
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K3bAudioFile::~K3bAudioFile()
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{
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m_doc->decreaseDecoderUsage( m_decoder );
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}
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TQString K3bAudioFile::type() const
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{
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return m_decoder->fileType();
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}
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TQString K3bAudioFile::sourceComment() const
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{
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return m_decoder->filename().section( "/", -1 );
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}
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const TQString& K3bAudioFile::filename() const
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{
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return m_decoder->filename();
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}
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bool K3bAudioFile::isValid() const
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{
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return m_decoder->isValid();
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}
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K3b::Msf K3bAudioFile::originalLength() const
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{
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return m_decoder->length();
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}
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bool K3bAudioFile::seek( const K3b::Msf& msf )
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{
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// this is valid once the decoder has been initialized.
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if( startOffset() + msf <= lastSector() &&
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m_decoder->seek( startOffset() + msf ) ) {
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m_decodedData = msf.audioBytes();
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return true;
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}
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else
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return false;
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}
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int K3bAudioFile::read( char* data, unsigned int max )
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{
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// here we can trust on the decoder to always provide enough data
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// see if we decode too much
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if( max + m_decodedData > length().audioBytes() )
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max = length().audioBytes() - m_decodedData;
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int read = m_decoder->decode( data, max );
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if( read > 0 )
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m_decodedData += read;
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return read;
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}
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K3bAudioDataSource* K3bAudioFile::copy() const
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{
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return new K3bAudioFile( *this );
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}
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