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116 lines
2.0 KiB
116 lines
2.0 KiB
/*
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*
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* $Id: k3baudiozerodata.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 "k3baudiozerodata.h"
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#include "k3baudiotrack.h"
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#include <klocale.h>
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#include <string.h>
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K3bAudioZeroData::K3bAudioZeroData( const K3b::Msf& len )
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: K3bAudioDataSource(),
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m_length(len),
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m_writtenData(0)
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{
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}
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K3bAudioZeroData::K3bAudioZeroData( const K3bAudioZeroData& zero )
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: K3bAudioDataSource( zero ),
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m_length( zero.m_length ),
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m_writtenData( 0 )
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{
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}
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K3bAudioZeroData::~K3bAudioZeroData()
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{
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}
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void K3bAudioZeroData::setLength( const K3b::Msf& msf )
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{
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if( msf > 0 )
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m_length = msf;
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else
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m_length = 1; // 1 frame
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m_writtenData = 0;
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emitChange();
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}
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QString K3bAudioZeroData::type() const
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{
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return i18n("Silence");
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}
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QString K3bAudioZeroData::sourceComment() const
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{
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return QString::null;
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}
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bool K3bAudioZeroData::seek( const K3b::Msf& msf )
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{
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if( msf < length() ) {
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m_writtenData = 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 K3bAudioZeroData::read( char* data, unsigned int max )
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{
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if( m_writtenData + max > length().audioBytes() )
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max = length().audioBytes() - m_writtenData;
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m_writtenData += max;
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::memset( data, 0, max );
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return max;
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}
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K3bAudioDataSource* K3bAudioZeroData::copy() const
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{
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return new K3bAudioZeroData( *this );
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}
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void K3bAudioZeroData::setStartOffset( const K3b::Msf& pos )
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{
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if( pos >= length() )
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setLength( 1 );
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else
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setLength( length() - pos );
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}
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void K3bAudioZeroData::setEndOffset( const K3b::Msf& pos )
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{
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if( pos < 1 )
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setLength( 1 );
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else
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setLength( pos );
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}
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