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/*
*
* $Id: k3baudiozerodata.cpp 619556 2007-01-03 17:38:12Z trueg $
* Copyright (C) 2004 Sebastian Trueg <[email protected]>
*
* This file is part of the K3b project.
* Copyright (C) 1998-2007 Sebastian Trueg <[email protected]>
*
* 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 "k3baudiozerodata.h"
#include "k3baudiotrack.h"
#include <klocale.h>
#include <string.h>
K3bAudioZeroData::K3bAudioZeroData( const K3b::Msf& len )
: K3bAudioDataSource(),
m_length(len),
m_writtenData(0)
{
}
K3bAudioZeroData::K3bAudioZeroData( const K3bAudioZeroData& zero )
: K3bAudioDataSource( zero ),
m_length( zero.m_length ),
m_writtenData( 0 )
{
}
K3bAudioZeroData::~K3bAudioZeroData()
{
}
void K3bAudioZeroData::setLength( const K3b::Msf& msf )
{
if( msf > 0 )
m_length = msf;
else
m_length = 1; // 1 frame
m_writtenData = 0;
emitChange();
}
TQString K3bAudioZeroData::type() const
{
return i18n("Silence");
}
TQString K3bAudioZeroData::sourceComment() const
{
return TQString();
}
bool K3bAudioZeroData::seek( const K3b::Msf& msf )
{
if( msf < length() ) {
m_writtenData = msf.audioBytes();
return true;
}
else
return false;
}
int K3bAudioZeroData::read( char* data, unsigned int max )
{
if( m_writtenData + max > length().audioBytes() )
max = length().audioBytes() - m_writtenData;
m_writtenData += max;
::memset( data, 0, max );
return max;
}
K3bAudioDataSource* K3bAudioZeroData::copy() const
{
return new K3bAudioZeroData( *this );
}
void K3bAudioZeroData::setStartOffset( const K3b::Msf& pos )
{
if( pos >= length() )
setLength( 1 );
else
setLength( length() - pos );
}
void K3bAudioZeroData::setEndOffset( const K3b::Msf& pos )
{
if( pos < 1 )
setLength( 1 );
else
setLength( pos );
}
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