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/***************************************************************************
copyright : (C) 2003 by Arnold Krille
email : arnold@arnoldarts.de
***************************************************************************/
/***************************************************************************
* *
* 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; version 2 of the License. *
* *
***************************************************************************/
#include <config.h>
#ifdef HAVE_VORBIS
#include "krecexport_ogg.h"
#include "krecexport_ogg.moc"
#include "krecglobal.h"
#include <kdebug.h>
#include <ktempfile.h>
#include <qfile.h>
#include <qtimer.h>
#include <kconfig.h>
#include <stdlib.h>
#include <time.h>
#include <qdatetime.h>
#include <kgenericfactory.h>
#include <klocale.h>
#include <kmessagebox.h>
K_EXPORT_COMPONENT_FACTORY( libkrecexport_ogg, KGenericFactory<KRecExport_OGG> )
KRecExport_OGG krecExportOGG( 0 );
KRecExport_OGG::KRecExport_OGG( QObject* p, const char* n, const QStringList& )
: KRecExportItem( p,n )
, _file( 0 )
, init_done( false )
{
kdDebug( 60005 ) << k_funcinfo << endl;
registerAtGlobal( this );
kdDebug( 60005 ) << "Registered Exports: " << KRecGlobal::the()->exportFormats() << endl;
}
KRecExport_OGG::~KRecExport_OGG() {
kdDebug( 60005 ) << k_funcinfo << endl;
}
KRecExport_OGG* KRecExport_OGG::newItem() {
kdDebug( 60005 ) << k_funcinfo << endl;
return new KRecExport_OGG( 0 );
}
QStringList KRecExport_OGG::extensions() {
//kdDebug( 60005 ) << k_funcinfo << endl;
QStringList tmp;
tmp << "*.ogg" << "*.OGG";
return tmp;
}
bool KRecExport_OGG::initialize( const QString &filename ) {
kdDebug( 60005 ) << k_funcinfo << endl;
if ( !_file &&
!( samplingRate()!=44100 && bits()!=16 && channels()!=2 &&
KMessageBox::warningContinueCancel( KRecGlobal::the()->mainWidget(),
i18n( "At this time OGG-export only supports files in 44kHz " \
"samplingrate, 16bit and 2 channels." )
) == KMessageBox::Cancel
)
) {
KMessageBox::information( KRecGlobal::the()->mainWidget(),
i18n( "Please note that this plugin takes its qualitysettings from" \
" the corresponding section of the audiocd:/ configuration. Make use" \
" of the Control Center to configure these settings." ),
i18n( "Quality Configuration" ), "qualityinfo_ogg" );
_file = new QFile( filename );
if ( _file->open( IO_Raw|IO_WriteOnly ) ) {
if ( ! init_done ) {
setOggParameters();
vorbis_analysis_init( &vd, &vi );
vorbis_block_init( &vd, &vb );
srand( time( NULL ) );
ogg_stream_init( &os, rand() );
}
if ( _file->size() == 0 ) {
ogg_packet header;
ogg_packet header_comm;
ogg_packet header_code;
vorbis_comment_init( &vc );
vorbis_comment_add_tag ( &vc, const_cast<char *>( "kde-encoder" ),
const_cast<char *>( "KRec" ) );
if ( write_vorbis_comments ) {
QDateTime dt = QDateTime::currentDateTime();
vorbis_comment_add_tag ( &vc, const_cast<char *>( "title" ),
const_cast<char *>( "" ) );
vorbis_comment_add_tag ( &vc, const_cast<char *>( "artist" ),
const_cast<char *>( "" ) );
vorbis_comment_add_tag ( &vc, const_cast<char *>( "album" ),
const_cast<char *>( "" ) );
vorbis_comment_add_tag ( &vc, const_cast<char *>( "genre" ),
const_cast<char *>( "" ) );
vorbis_comment_add_tag ( &vc, const_cast<char *>( "tracknumber" ),
const_cast<char *>( "" ) );
vorbis_comment_add_tag ( &vc, const_cast<char *>( "date" ),
const_cast<char *>( dt.toString( "yyyy-MM-dd hh:mm:ss" ).utf8().data() ) );
}
vorbis_analysis_headerout( &vd, &vc, &header, &header_comm, &header_code );
ogg_stream_packetin( &os, &header );
ogg_stream_packetin( &os, &header_comm );
ogg_stream_packetin( &os, &header_code );
while ( ogg_stream_flush( &os, &og ) ) {
//kdDebug( 60005 ) << "Writing Ogg/Vorbis Header." << endl;
_file->writeBlock( reinterpret_cast<char *>( og.header ), og.header_len );
_file->writeBlock( reinterpret_cast<char *>( og.body ), og.body_len );
}
} else
_file->at( _file->size() );
init_done = true;
} else return false;
return true;
}
return false;
}
bool KRecExport_OGG::process() {
//kdDebug( 60005 ) << k_funcinfo << endl;
if ( _file ) {
if ( running() ) {
QByteArray bytearray( 4096 );
emit getData( bytearray );
float **buffer = vorbis_analysis_buffer( &vd, bytearray.size() >> 2 );
// uninterleave samples
unsigned int i;
int index = 0;
int16_t sample;
unsigned char *packet = reinterpret_cast<unsigned char *>( bytearray.data() );
for ( i = 0; i < ( bytearray.size() >> 2 ); i++ ) {
sample = packet[ index ] | ( packet[ index + 1 ] << 8 );
index += 2;
buffer[ 0 ][ i ] = sample / 32768.0;
sample = packet[ index ] | ( packet[ index + 1 ] << 8 );
index += 2;
buffer[ 1 ][ i ] = sample / 32768.0;
}
vorbis_analysis_wrote( &vd, i );
while ( vorbis_analysis_blockout( &vd, &vb ) == 1 ) {
#if HAVE_VORBIS >= 2
vorbis_analysis( &vb, NULL );
vorbis_bitrate_addblock( &vb );
while ( vorbis_bitrate_flushpacket( &vd, &op ) ) {
#else
// Support for very old libvorbis
vorbis_analysis( &vb, &op );
{
#endif
ogg_stream_packetin( &os, &op );
while ( ogg_stream_pageout( &os, &og ) ) {
_file->writeBlock( reinterpret_cast<char *>( og.header ), og.header_len );
_file->writeBlock( reinterpret_cast<char *>( og.body ), og.body_len );
}
}
}
QTimer::singleShot( 10, this, SLOT( process() ) );
}
return true;
} else return false;
}
bool KRecExport_OGG::finalize() {
kdDebug( 60005 ) << k_funcinfo << endl;
if ( _file ) {
ogg_stream_clear( &os );
vorbis_block_clear( &vb );
vorbis_dsp_clear( &vd );
vorbis_info_clear( &vi );
_file->close();
delete _file;
_file = 0;
return true;
} else return false;
}
// Derived from kdemultimedia/kioslave/audiocd/audiocd.cpp.
// We use the encoding settings from kcmaudiocd.
void KRecExport_OGG::setOggParameters() {
kdDebug( 60005 ) << k_funcinfo << endl;
KConfig *config;
config = new KConfig( "kcmaudiocdrc" );
config->setGroup( "Vorbis" );
// 0 for quality, 1 for managed bitrate
int vorbis_encode_method = config->readNumEntry( "encmethod", 0 );
// default quality level of 3, to match oggenc
double vorbis_quality = config->readDoubleNumEntry( "quality",3.0 );
int vorbis_bitrate_lower = -1;
if ( config->readBoolEntry( "set_vorbis_min_bitrate",false ) )
vorbis_bitrate_lower = config->readNumEntry( "vorbis_min_bitrate",40 ) * 1000;
int vorbis_bitrate_upper = -1;
if ( config->readBoolEntry( "set_vorbis_max_bitrate",false ) )
vorbis_bitrate_upper = config->readNumEntry( "vorbis_max_bitrate",350 ) * 1000;
// this is such a hack!
int vorbis_bitrate;
if ( vorbis_bitrate_upper != -1 && vorbis_bitrate_lower != -1 )
vorbis_bitrate = 104000; // empirically determined ...?!
else
vorbis_bitrate = 160 * 1000;
int vorbis_bitrate_nominal = -1;
if ( config->readBoolEntry( "set_vorbis_nominal_bitrate",true ) ) {
vorbis_bitrate_nominal = config->readNumEntry( "vorbis_nominal_bitrate",160 ) * 1000;
vorbis_bitrate = vorbis_bitrate_nominal;
}
write_vorbis_comments = config->readBoolEntry( "vorbis_comments",true );
vorbis_info_init( &vi );
switch ( vorbis_encode_method ) {
case 0:
// Support very old libvorbis by simply falling through
#if HAVE_VORBIS >= 2
vorbis_encode_init_vbr( &vi, 2/*this->channels()*/,
44100/*this->samplingRate()*/,
vorbis_quality/10.0 );
break;
#endif
case 1:
vorbis_encode_init( &vi, 2/*this->channels()*/,
44100/*this->samplingRate()*/,
vorbis_bitrate_upper, vorbis_bitrate_nominal,
vorbis_bitrate_lower );
break;
}
delete config;
}
#endif // vorbis
// vim:sw=4:ts=4
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