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/*
*
* $Id: k3bwavefilewriter.cpp 619556 2007-01-03 17:38:12Z trueg $
* Copyright (C) 2003 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 "k3bwavefilewriter.h"
#include <kdebug.h>
K3bWaveFileWriter::K3bWaveFileWriter()
: m_outputStream( &m_outputFile )
{
}
K3bWaveFileWriter::~K3bWaveFileWriter()
{
close();
}
bool K3bWaveFileWriter::open( const TQString& filename )
{
close();
m_outputFile.setName( filename );
if( m_outputFile.open( IO_ReadWrite ) ) {
m_filename = filename;
writeEmptyHeader();
return true;
}
else {
return false;
}
}
void K3bWaveFileWriter::close()
{
if( isOpen() ) {
if( m_outputFile.at() > 0 ) {
padTo2352();
// update wave header
updateHeader();
m_outputFile.close();
}
else {
m_outputFile.close();
m_outputFile.remove();
}
}
m_filename = TQString();
}
bool K3bWaveFileWriter::isOpen()
{
return m_outputFile.isOpen();
}
const TQString& K3bWaveFileWriter::filename() const
{
return m_filename;
}
void K3bWaveFileWriter::write( const char* data, int len, Endianess e )
{
if( isOpen() ) {
if( e == LittleEndian ) {
m_outputStream.writeRawBytes( data, len );
}
else {
if( len % 2 > 0 ) {
kdDebug() << "(K3bWaveFileWriter) data length ("
<< len << ") is not a multiple of 2! Cannot swap bytes." << endl;
return;
}
// we need to swap the bytes
char* buffer = new char[len];
for( int i = 0; i < len-1; i+=2 ) {
buffer[i] = data[i+1];
buffer[i+1] = data[i];
}
m_outputStream.writeRawBytes( buffer, len );
delete [] buffer;
}
}
}
void K3bWaveFileWriter::writeEmptyHeader()
{
static const char riffHeader[] =
{
'\x52', '\x49', '\x46', '\x46', // 0 "RIFF"
'\x00', '\x00', '\x00', '\x00', // 4 wavSize
'\x57', '\x41', '\x56', '\x45', // 8 "WAVE"
'\x66', '\x6d', '\x74', '\x20', // 12 "fmt "
'\x10', '\x00', '\x00', '\x00', // 16
'\x01', '\x00', '\x02', '\x00', // 20
'\x44', '\xac', '\x00', '\x00', // 24
'\x10', '\xb1', '\x02', '\x00', // 28
'\x04', '\x00', '\x10', '\x00', // 32
'\x64', '\x61', '\x74', '\x61', // 36 "data"
'\x00', '\x00', '\x00', '\x00' // 40 byteCount
};
m_outputStream.writeRawBytes( riffHeader, 44 );
}
void K3bWaveFileWriter::updateHeader()
{
if( isOpen() ) {
m_outputFile.flush();
TQ_INT32 dataSize( m_outputFile.at() - 44 );
TQ_INT32 wavSize(dataSize + 44 - 8);
char c[4];
// jump to the wavSize position in the header
if( m_outputFile.at( 4 ) ) {
c[0] = (wavSize >> 0 ) & 0xff;
c[1] = (wavSize >> 8 ) & 0xff;
c[2] = (wavSize >> 16) & 0xff;
c[3] = (wavSize >> 24) & 0xff;
m_outputStream.writeRawBytes( c, 4 );
}
else
kdDebug() << "(K3bWaveFileWriter) unable to seek in file: " << m_outputFile.name() << endl;
if( m_outputFile.at( 40 ) ) {
c[0] = (dataSize >> 0 ) & 0xff;
c[1] = (dataSize >> 8 ) & 0xff;
c[2] = (dataSize >> 16) & 0xff;
c[3] = (dataSize >> 24) & 0xff;
m_outputStream.writeRawBytes( c, 4 );
}
else
kdDebug() << "(K3bWaveFileWriter) unable to seek in file: " << m_outputFile.name() << endl;
// jump back to the end
m_outputFile.at( m_outputFile.size() );
}
}
void K3bWaveFileWriter::padTo2352()
{
int bytesToPad = ( m_outputFile.at() - 44 ) % 2352;
if( bytesToPad > 0 ) {
kdDebug() << "(K3bWaveFileWriter) padding wave file with " << bytesToPad << " bytes." << endl;
char* c = new char[bytesToPad];
memset( c, 0, bytesToPad );
m_outputStream.writeRawBytes( c, bytesToPad );
delete [] c;
}
}
int K3bWaveFileWriter::fd() const
{
return m_outputFile.handle();
}
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