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/*
Rosegarden
A sequencer and musical notation editor.
This program is Copyright 2000-2008
Guillaume Laurent <[email protected]>,
Chris Cannam <[email protected]>,
Richard Bown <[email protected]>
The moral right of the authors to claim authorship of this work
has been asserted.
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 included with this distribution for more information.
*/
#include <sstream>
#include "BWFAudioFile.h"
#include "RealTime.h"
using std::cout;
using std::cerr;
using std::endl;
namespace Rosegarden
{
BWFAudioFile::BWFAudioFile(const unsigned int &id,
const std::string &name,
const std::string &fileName):
RIFFAudioFile(id, name, fileName)
{
m_type = WAV;
}
BWFAudioFile::BWFAudioFile(const std::string &fileName,
unsigned int channels = 1,
unsigned int sampleRate = 48000,
unsigned int bytesPerSecond = 6000,
unsigned int bytesPerFrame = 2,
unsigned int bitsPerSample = 16):
RIFFAudioFile(0, "", fileName)
{
m_type = WAV;
m_bitsPerSample = bitsPerSample;
m_sampleRate = sampleRate;
m_bytesPerSecond = bytesPerSecond;
m_bytesPerFrame = bytesPerFrame;
m_channels = channels;
}
BWFAudioFile::~BWFAudioFile()
{}
bool
BWFAudioFile::open()
{
// if already open
if (m_inFile && (*m_inFile))
return true;
m_inFile = new std::ifstream(m_fileName.c_str(),
std::ios::in | std::ios::binary);
if (!(*m_inFile)) {
m_type = UNKNOWN;
return false;
}
// Get the file size and store it for comparison later
//
m_fileSize = m_fileInfo->size();
try {
parseHeader();
} catch (BadSoundFileException s) {
//throw(s);
return false;
}
return true;
}
// Open the file for writing, write out the header and move
// to the data chunk to accept samples. We fill in all the
// totals when we close().
//
bool
BWFAudioFile::write()
{
// close if we're open
if (m_outFile) {
m_outFile->close();
delete m_outFile;
}
// open for writing
m_outFile = new std::ofstream(m_fileName.c_str(),
std::ios::out | std::ios::binary);
if (!(*m_outFile))
return false;
// write out format header chunk and prepare for sample writing
//
writeFormatChunk();
return true;
}
void
BWFAudioFile::close()
{
if (m_outFile == 0)
return ;
m_outFile->seekp(0, std::ios::end);
unsigned int totalSize = m_outFile->tellp();
// seek to first length position
m_outFile->seekp(4, std::ios::beg);
// write complete file size minus 8 bytes to here
putBytes(m_outFile, getLittleEndianFromInteger(totalSize - 8, 4));
// reseek from start forward 40
m_outFile->seekp(40, std::ios::beg);
// write the data chunk size to end
putBytes(m_outFile, getLittleEndianFromInteger(totalSize - 44, 4));
m_outFile->close();
delete m_outFile;
m_outFile = 0;
}
// Set the AudioFile meta data according to WAV file format specification.
//
void
BWFAudioFile::parseHeader()
{
// Read the format chunk and populate the file data. A plain WAV
// file only has this chunk. Exceptions tumble through.
//
readFormatChunk();
}
std::streampos
BWFAudioFile::getDataOffset()
{
return 0;
}
}
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