CDEX_ERR CEncoderLameDll::OpenStream(CUString strOutFileName,DWORD dwSampleRate,WORD nChannels)
{
CDEX_ERR bReturn = CDEX_OK;
CUString strLang;
CUStringConvert strCnv;
ENTRY_TRACE( _T( "CEncoderLameDll::OpenStream( %s, %ld, %d" ),
strCnv.ToT( strOutFileName + _W( "." ) + GetExtension() ),
dwSampleRate,
nChannels );
DWORD dwInSampleRate = dwSampleRate;
m_strStreamFileName = strOutFileName;
// clear all config settings
memset( &m_beConfig, 0, sizeof(m_beConfig) );
// set the number of input channels
m_nInputChannels = nChannels;
// Divide sample rate by two for MPEG2
if ( ( GetVersion() >=1 ) && ( dwInSampleRate >= 32000 ) )
{
m_dResampleRatio = 2.0;
dwSampleRate = dwInSampleRate / 2;
}
// mask mode, just to be sure (due to an old hack)
m_nMode &= 0x0F;
// Do we have to downmix/upmix ?
if ( BE_MP3_MODE_MONO == m_nMode )
{
if ( 2 == nChannels )
{
m_bDownMixToMono = TRUE;
}
else
{
m_bDownMixToMono = FALSE;
}
}
else
{
if ( 1 == nChannels )
{
m_bUpMixToStereo = TRUE;
}
else
m_bUpMixToStereo=FALSE;
}
int nCRC = m_bCRC;
int nVBR = (nCRC>>12)&0x0F;
int nVbrMethod = (nCRC>>16)&0x0F;
m_beConfig.dwConfig = BE_CONFIG_LAME;
m_beConfig.format.LHV1.dwStructVersion = 1;
m_beConfig.format.LHV1.dwStructSize = sizeof(m_beConfig);
m_beConfig.format.LHV1.dwSampleRate = dwSampleRate;
m_beConfig.format.LHV1.dwReSampleRate = m_nOutSampleRate;
m_beConfig.format.LHV1.nMode = m_nMode;
m_beConfig.format.LHV1.dwBitrate = m_nBitrate;
m_beConfig.format.LHV1.dwMaxBitrate = m_nMaxBitrate;
m_beConfig.format.LHV1.dwMpegVersion = (dwSampleRate>=32000)?MPEG1:MPEG2;
m_beConfig.format.LHV1.dwPsyModel = 0;
m_beConfig.format.LHV1.dwEmphasis = 0;
m_beConfig.format.LHV1.bCRC = nCRC&0x01;;
m_beConfig.format.LHV1.bCopyright = m_bCopyRight;
m_beConfig.format.LHV1.bPrivate = m_bPrivate;
m_beConfig.format.LHV1.bOriginal = m_bOriginal;
// allways write the VBR header, even for CBR file
m_beConfig.format.LHV1.bWriteVBRHeader = TRUE;
if ( nVbrMethod > 0 )
{
m_beConfig.format.LHV1.bEnableVBR = TRUE;
m_beConfig.format.LHV1.nVbrMethod = (VBRMETHOD)(nVbrMethod-1) ;
// is this the ABR method ?
if ( ( VBR_METHOD_ABR + 1 ) == nVbrMethod )
{
// get the average bit rate
m_beConfig.format.LHV1.dwVbrAbr_bps= LOWORD( GetUserN1() )*1000;
m_beConfig.format.LHV1.nVBRQuality = 0 ;
}
else
{
// no ABR selected
m_beConfig.format.LHV1.dwVbrAbr_bps = 0;
m_beConfig.format.LHV1.nVBRQuality = nVBR ;
}
}
// Get Quality from third nibble
m_beConfig.format.LHV1.nPreset=( (nCRC >> 8 ) & 0x0F );
m_fpOut= CID3Tag::SaveInitialV2Tag( strOutFileName + _W( "." ) + GetExtension(), GetId3V2PadSize() );
//m_fpOut = CDexOpenFile( strOutFileName + _W( "." ) + GetExtension(), _W( "wb+" ) );
if ( NULL == m_fpOut )
{
CUString strErr;
strLang = g_language.GetString( IDS_ENCODER_ERROR_COULDNOTOPENFILE );
strErr.Format( strLang, (LPCWSTR)CUString( strOutFileName + _W( "." ) + GetExtension() ) );
CDexMessageBox( strErr );
bReturn = CDEX_FILEOPEN_ERROR;
}
if ( CDEX_OK == bReturn )
{
int nReturn = m_InitStream( &m_beConfig,
&m_dwInBufferSize,
&m_dwOutBufferSize,
&m_hbeStream );
switch ( nReturn )
{
case CDEX_OK:
// do nothing
break;
case -1:
strLang = g_language.GetString( IDS_ENCODER_ERROR_SAMPLERATEBITRATEMISMATCH );
CDexMessageBox( strLang );
bReturn = CDEX_ERROR;
break;
case -2:
strLang = g_language.GetString( IDS_ENCODER_ERROR_INVALIDINPUTSTREAM );
CDexMessageBox( strLang );
bReturn = CDEX_ERROR;
break;
default:
strLang = g_language.GetString( IDS_ENCODER_ERROR_INVALIDINPUTSTREAM );
CDexMessageBox( strLang );
bReturn = CDEX_ERROR;
break;
}
}
if ( CDEX_OK == bReturn )
{
if ( ( GetVersion() >= 1 ) && ( dwInSampleRate >= 32000 ) )
{
// Add multiplcation factor for resampling
m_dwInBufferSize *= 2;
}
if ( m_bDownMixToMono )
{
m_dwInBufferSize *= 2;
}
// Allocate Output Buffer size
m_pbOutputStream = new BYTE[ m_dwOutBufferSize ];
// Only expect halve the number of samples
// in case we have to upsample
if ( m_bUpMixToStereo )
{
// Allocate upsample Buffer size
m_psInputStream = new SHORT[ m_dwInBufferSize ];
m_dwInBufferSize /= 2;
}
}
if ( CDEX_OK == bReturn )
{
// Initialize the input stream
bReturn = InitInputStream();
}
EXIT_TRACE( _T( "CEncoderLameDll::OpenStream, return value %d" ), bReturn );
return bReturn;
}
CDEX_ERR CEncoderFaacDll::OpenStream(CUString strOutFileName,DWORD dwSampleRate,WORD nChannels)
{
CDEX_ERR bReturn = CDEX_OK;
bool bStereo = true;
CUString strLang;
CUStringConvert strCnv;
ENTRY_TRACE( _T( "CEncoderFaacDll::OpenStream( %s, %d %d" ),
strCnv.ToT( strOutFileName + _W( "." ) + GetExtension() ),
dwSampleRate,
nChannels );
// setup number of input channels
m_nInputChannels = nChannels;
// setup number of output channels
if ( ( m_nMode & 0xFFFF ) == BE_MP3_MODE_MONO )
{
bStereo = false;
}
// mixer setup
if ( ( false == bStereo ) && ( 2 == nChannels ) )
{
m_bDownMixToMono = TRUE;
}
else
{
m_bDownMixToMono = FALSE;
}
if ( ( true == bStereo ) && ( 1 == nChannels ) )
{
m_bUpMixToStereo = TRUE;
}
else
{
m_bUpMixToStereo = FALSE;
}
// try to get a handle
m_handle = faacEncOpen( dwSampleRate,
(bStereo == true )? 2 : 1,
&m_dwInBufferSize,
&m_dwOutBufferSize );
if ( NULL == m_handle )
{
CUString strMsg;
strLang = g_language.GetString( IDS_LOADLIBRARY_FAILED );
strMsg.Format( strLang , (LPCWSTR)CUString( ( g_config.GetAppPath() + _W( "\\" ) + m_strEncoderPath ) ) );
CDexMessageBox( strMsg );
LTRACE( _T( "CEncoderFaacDll::OpenStream Failed to get handle" ) );
bReturn = CDEX_ERROR;
}
if ( CDEX_OK == bReturn )
{
// get current config
m_pConfig = faacEncGetCurrentConfiguration( m_handle );
// set settings
if ( GetUserN1() & 0x08 )
{
m_pConfig->mpegVersion = FAAC_MPEG4;
}
else
{
m_pConfig->mpegVersion = FAAC_MPEG2;
}
m_pConfig->bitRate = m_nBitrate * 1000;
m_pConfig->allowMidside = ( GetUserN1() & 0x02 ) ? TRUE : FALSE;
m_pConfig->useLfe = ( GetUserN1() & 0x04 ) ? TRUE : FALSE;; /* ? */
m_pConfig->useTns = ( GetUserN1() & 0x01 ) ? TRUE : FALSE;
m_pConfig->inputFormat = FAAC_INPUT_16BIT;
m_pConfig->aacObjectType = ( GetUserN2() & 0x07 );
m_pConfig->shortctl = SHORTCTL_NORMAL;
switch ( ( GetUserN1() >> 8 ) & 0x0F )
{
case 0: m_pConfig->bandWidth = 16000; break;
case 1: m_pConfig->bandWidth = 18000; break;
case 2: m_pConfig->bandWidth = 19500; break;
default: m_pConfig->bandWidth = 19500; break;
}
// set new config
if ( FALSE == faacEncSetConfiguration( m_handle, m_pConfig ) )
{
CUString strMsg;
strLang = g_language.GetString( IDS_LOADLIBRARY_FAILED );
strMsg.Format( strLang , (LPCWSTR)CUString( g_config.GetAppPath() + _W( "\\" ) + m_strEncoderPath ) );
CDexMessageBox( strMsg );
LTRACE( _T( "CEncoderFaacDll::OpenStream Failed to set config" ) );
bReturn = CDEX_ERROR;
}
}
