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/*
* Oreka -- A media capture and retrieval platform
*
* Copyright (C) 2005, orecx LLC
*
* http://www.orecx.com
*
* This program is free software, distributed under the terms of
* the GNU General Public License.
* Please refer to http://www.gnu.org/copyleft/gpl.html
*
*/
#define _WINSOCKAPI_ // prevents the inclusion of winsock.h
#include "Utils.h"
#include "LibSndFileFile.h"
LibSndFileFile::LibSndFileFile(int fileFormat)
{
m_fileInfo.format = fileFormat;
m_fileInfo.frames = 0;
m_fileInfo.samplerate = 0;
m_fileInfo.channels = 0;
m_fileInfo.sections = 0;
m_fileInfo.seekable = 0;
m_pFile = NULL;
m_numChunksWritten = 0;
m_mode = READ;
m_sampleRate = 0;
}
LibSndFileFile::~LibSndFileFile()
{
Close();
}
void LibSndFileFile::Open(CStdString& filename, fileOpenModeEnum mode, bool stereo, int sampleRate)
{
if(!m_filename.Equals(filename))
{
m_filename = filename + ".wav";
}
m_mode = mode;
stereo ? m_fileInfo.channels = 2 : m_fileInfo.channels = 1;
if(m_sampleRate == 0)
{
m_sampleRate = sampleRate;
m_fileInfo.samplerate = sampleRate;
}
if( (mode==WRITE) && !sf_format_check(&m_fileInfo))
{
throw(CStdString("libsndfile: Selected output format not supported"));
}
RecursiveMkdir(m_filename);
int sndFileMode;
mode == READ ? sndFileMode = SFM_READ : sndFileMode = SFM_WRITE;
m_pFile = sf_open((PCSTR)m_filename, sndFileMode, &m_fileInfo);
if(!m_pFile)
{
throw(CStdString("sf_open failed, audio file could not be created:"+ m_filename));
}
}
void LibSndFileFile::WriteChunk(AudioChunkRef chunkRef)
{
if(chunkRef.get() == NULL)
{
return;
}
if(chunkRef->GetDetails()->m_numBytes == 0)
{
return;
}
if (m_pFile)
{
if( chunkRef->GetEncoding() == AlawAudio || chunkRef->GetEncoding() == UlawAudio)
{
if(sf_write_raw(m_pFile, chunkRef->m_pBuffer, chunkRef->GetNumSamples()) != chunkRef->GetNumSamples())
{
CStdString numChunksWrittenString = IntToString(m_numChunksWritten);
throw(CStdString("sf_write_raw failed, audio file " + m_filename + " could not be written after " + numChunksWrittenString + " chunks written"));
}
}
else if (chunkRef->GetEncoding() == PcmAudio)
{
if(sf_write_short(m_pFile, (short*)chunkRef->m_pBuffer, chunkRef->GetNumSamples()) != chunkRef->GetNumSamples())
{
CStdString numChunksWrittenString = IntToString(m_numChunksWritten);
throw(CStdString("sf_write_short failed, audio file " + m_filename + " could not be written after " + numChunksWrittenString + " chunks written"));
}
}
m_numChunksWritten++;
}
else
{
throw(CStdString("Write attempt on unopened file:")+ m_filename);
}
}
int LibSndFileFile::ReadChunkMono(AudioChunkRef& chunk)
{
unsigned int numRead = 0;
if (m_pFile)
{
chunk.reset(new AudioChunk());
short temp[8000];
numRead = sf_read_short(m_pFile, temp, 8000);
AudioChunkDetails details;
details.m_encoding = PcmAudio;
chunk->SetBuffer(temp, sizeof(short)*numRead, details);
}
else
{
throw(CStdString("Read attempt on unopened file:")+ m_filename);
}
return numRead;
}
void LibSndFileFile::Close()
{
if (m_pFile)
{
sf_close(m_pFile);
m_pFile = NULL;
}
}
CStdString LibSndFileFile::GetExtension()
{
return ".wav";
}
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