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/*
SPDX-FileCopyrightText: 2010 Michal Malek <michalm@jabster.pl>
SPDX-FileCopyrightText: 1998-2008 Sebastian Trueg <trueg@k3b.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "k3blameencoder.h"
#include "k3blameencoderdefaults.h"
#include "k3blametyes.h"
#include "k3bplugin_i18n.h"
#include "k3bcore.h"
#include <config-k3b.h>
#include <KConfig>
#include <KConfigGroup>
#include <KSharedConfig>
#include <QDebug>
#include <stdio.h>
#include <lame/lame.h>
#include <QFile>
K_PLUGIN_CLASS_WITH_JSON(K3bLameEncoder, "k3blameencoder.json")
class K3bLameEncoder::Private
{
public:
Private()
: flags(0),
fid(0) {
}
lame_global_flags* flags;
char buffer[8000];
QString filename;
FILE* fid;
};
K3bLameEncoder::K3bLameEncoder( QObject* parent, const QVariantList& )
: K3b::AudioEncoder( parent )
{
d = new Private();
}
K3bLameEncoder::~K3bLameEncoder()
{
closeFile();
delete d;
}
bool K3bLameEncoder::openFile( const QString& extension, const QString& filename, const K3b::Msf& length, const MetaData& metaData )
{
closeFile();
d->filename = filename;
d->fid = ::fopen( QFile::encodeName( filename ), "w+" );
if( d->fid )
return initEncoder( extension, length, metaData );
else
return false;
}
bool K3bLameEncoder::isOpen() const
{
return ( d->fid != 0 );
}
void K3bLameEncoder::closeFile()
{
if( isOpen() ) {
finishEncoder();
::fclose( d->fid );
d->fid = 0;
d->filename.truncate(0);
}
}
QString K3bLameEncoder::filename() const
{
return d->filename;
}
bool K3bLameEncoder::initEncoderInternal( const QString&, const K3b::Msf& length, const MetaData& metaData )
{
KSharedConfig::Ptr c = KSharedConfig::openConfig();
KConfigGroup grp(c, QStringLiteral("K3bLameEncoderPlugin") );
d->flags = lame_init();
if( d->flags == 0 ) {
qDebug() << "(K3bLameEncoder) lame_init failed.";
return false;
}
//
// set the format of the input data
//
lame_set_num_samples( d->flags, length.lba()*588 );
lame_set_in_samplerate( d->flags, 44100 );
lame_set_num_channels( d->flags, 2 );
//
// Lame by default determines the samplerate based on the bitrate
// since we have no option for the user to influence this yet
// we just keep to the good old 44.1 khz
//
lame_set_out_samplerate( d->flags, 44100 );
//
// Choose the quality level
//
if( grp.readEntry( "Manual Bitrate Settings", DEFAULT_MANUAL_BITRATE ) ) {
//
// Mode
//
QString mode = grp.readEntry( "Mode", DEFAULT_MODE );
if( mode == "stereo" )
lame_set_mode( d->flags, STEREO );
else if( mode == "joint" )
lame_set_mode( d->flags, JOINT_STEREO );
else // mono
lame_set_mode( d->flags, MONO );
//
// Variable Bitrate
//
if( grp.readEntry( "VBR", DEFAULT_VBR ) ) {
// we use the default algorithm here
lame_set_VBR( d->flags, vbr_default );
if( grp.readEntry( "Use Maximum Bitrate", DEFAULT_USE_MAXIMUM_BITRATE ) ) {
lame_set_VBR_max_bitrate_kbps( d->flags, grp.readEntry( "Maximum Bitrate", DEFAULT_MAXIMUM_BITRATE ) );
}
if( grp.readEntry( "Use Minimum Bitrate", DEFAULT_USE_MINIMUM_BITRATE ) ) {
lame_set_VBR_min_bitrate_kbps( d->flags, grp.readEntry( "Minimum Bitrate", DEFAULT_MINIMUM_BITRATE ) );
// TODO: lame_set_hard_min
}
if( grp.readEntry( "Use Average Bitrate", DEFAULT_USE_AVERAGE_BITRATE ) ) {
lame_set_VBR( d->flags, vbr_abr );
lame_set_VBR_mean_bitrate_kbps( d->flags, grp.readEntry( "Average Bitrate", DEFAULT_AVERAGE_BITRATE ) );
}
}
//
// Constant Bitrate
//
else {
lame_set_VBR( d->flags, vbr_off );
lame_set_brate( d->flags, grp.readEntry( "Constant Bitrate", DEFAULT_CONSTANT_BITRATE ) );
}
}
else {
//
// In lame 0 is the highest quality. Since that is just confusing for the user
// if we call the setting "Quality" we simply invert the value.
//
int q = grp.readEntry( "Quality Level", DEFAULT_QUALITY_LEVEL );
if( q < 0 ) q = 0;
if( q > 9 ) q = 9;
qDebug() << "(K3bLameEncoder) setting preset encoding value to " << q;
if ( q < 2 || q > 8 ) {
lame_set_VBR( d->flags, vbr_abr );
}
else {
lame_set_VBR( d->flags, vbr_default );
}
lame_set_preset( d->flags, s_lame_presets[q] );
if( q < 2 )
lame_set_mode( d->flags, MONO );
}
//
// file options
//
lame_set_copyright( d->flags, grp.readEntry( "Copyright", DEFAULT_COPYRIGHT ) );
lame_set_original( d->flags, grp.readEntry( "Original", DEFAULT_ORIGINAL ) );
lame_set_strict_ISO( d->flags, grp.readEntry( "ISO compliance", DEFAULT_ISO_COMPLIANCE ) );
lame_set_error_protection( d->flags, grp.readEntry( "Error Protection", DEFAULT_ERROR_PROTECTION ) );
//
// Used Algorithm
//
// default to 2 which is the same as the -h lame option
// THIS HAS NO INFLUENCE ON THE SIZE OF THE FILE!
//
//
// In lame 0 is the highest quality. Since that is just confusing for the user
// if we call the setting "Quality" we simply invert the value.
//
int q = grp.readEntry( "Encoder Quality", DEFAULT_ENCODER_QUALITY );
if( q < 0 ) q = 0;
if( q > 9 ) q = 9;
lame_set_quality( d->flags, 9-q );
//
// ID3 settings
//
// for now we default to both v1 and v2 tags
id3tag_add_v2( d->flags );
id3tag_pad_v2( d->flags );
// let's not use UTF-8 here since I don't know how to tell lame...
for( MetaData::const_iterator it = metaData.constBegin(); it != metaData.constEnd(); ++it ) {
QByteArray value = it.value().toString().toLatin1();
switch( it.key() ) {
case META_TRACK_TITLE:
id3tag_set_title( d->flags, value );
break;
case META_TRACK_ARTIST:
id3tag_set_artist( d->flags, value );
break;
case META_ALBUM_TITLE:
id3tag_set_album( d->flags, value );
break;
case META_ALBUM_COMMENT:
id3tag_set_comment( d->flags, value );
break;
case META_YEAR:
id3tag_set_year( d->flags, value );
break;
case META_TRACK_NUMBER:
id3tag_set_track( d->flags, value );
break;
case META_GENRE:
if( id3tag_set_genre( d->flags, value ) )
qDebug() << "(K3bLameEncoder) unable to set genre.";
break;
default:
break;
}
}
return( lame_init_params( d->flags ) != -1 );
}
qint64 K3bLameEncoder::encodeInternal( const char* data, qint64 len )
{
// FIXME: we may have to swap data here
int size = lame_encode_buffer_interleaved( d->flags,
(short int*)data,
len/4,
(unsigned char*)d->buffer,
8000 );
if( size < 0 ) {
qDebug() << "(K3bLameEncoder) lame_encode_buffer_interleaved failed.";
return -1;
}
return ::fwrite( d->buffer, 1, size, d->fid );
}
void K3bLameEncoder::finishEncoderInternal()
{
int size = lame_encode_flush( d->flags,
(unsigned char*)d->buffer,
8000 );
if( size > 0 )
::fwrite( d->buffer, 1, size, d->fid );
lame_mp3_tags_fid( d->flags, d->fid );
lame_close( d->flags );
d->flags = 0;
}
QStringList K3bLameEncoder::extensions() const
{
return QStringList( "mp3" );
}
QString K3bLameEncoder::fileTypeComment( const QString& ) const
{
return "MPEG1 Layer III (mp3)";
}
long long K3bLameEncoder::fileSize( const QString&, const K3b::Msf& msf ) const
{
KSharedConfig::Ptr c = KSharedConfig::openConfig();
KConfigGroup grp(c, QStringLiteral("K3bLameEncoderPlugin") );
int bitrate = 0;
if( grp.readEntry( "Manual Bitrate Settings", DEFAULT_MANUAL_BITRATE ) ) {
if( grp.readEntry( "VBR", DEFAULT_VBR ) ) {
if( grp.readEntry( "Use Maximum Bitrate", DEFAULT_USE_MAXIMUM_BITRATE ) )
bitrate = grp.readEntry( "Maximum Bitrate", DEFAULT_MAXIMUM_BITRATE );
if( grp.readEntry( "Use Minimum Bitrate", DEFAULT_USE_MINIMUM_BITRATE ) )
bitrate = ( bitrate > 0
? (bitrate - grp.readEntry( "Minimum Bitrate", DEFAULT_MINIMUM_BITRATE )) / 2
: grp.readEntry( "Minimum Bitrate", DEFAULT_MINIMUM_BITRATE ) );
if( grp.readEntry( "Use Average Bitrate", DEFAULT_USE_AVERAGE_BITRATE ) )
bitrate = grp.readEntry( "Average Bitrate", DEFAULT_AVERAGE_BITRATE );
}
else {
bitrate = grp.readEntry( "Constant Bitrate", DEFAULT_CONSTANT_BITRATE );
}
}
else {
int q = grp.readEntry( "Quality Level", DEFAULT_ENCODER_QUALITY );
if( q < 0 ) q = 0;
if( q > 9 ) q = 9;
bitrate = s_lame_preset_approx_bitrates[q];
}
return (msf.totalFrames()/75 * bitrate * 1000)/8;
}
#include "k3blameencoder.moc"
#include "moc_k3blameencoder.cpp"
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