core/transcoding/TranscodingController.cpp

0001 /****************************************************************************************
0002  * Copyright (c) 2009 Téo Mrnjavac <teo@kde.org>                                        *
0003  *                                                                                      *
0004  * This program is free software; you can redistribute it and/or modify it under        *
0005  * the terms of the GNU General Public License as published by the Free Software        *
0006  * Foundation; either version 2 of the License, or (at your option) any later           *
0007  * version.                                                                             *
0008  *                                                                                      *
0009  * This program is distributed in the hope that it will be useful, but WITHOUT ANY      *
0010  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A      *
0011  * PARTICULAR PURPOSE. See the GNU General Public License for more details.             *
0012  *                                                                                      *
0013  * You should have received a copy of the GNU General Public License along with         *
0014  * this program.  If not, see <http://www.gnu.org/licenses/>.                           *
0015  ****************************************************************************************/
0016
0017 #include "TranscodingController.h"
0018
0019 #include "formats/TranscodingNullFormat.h"
0020 #include "formats/TranscodingAacFormat.h"
0021 #include "formats/TranscodingAlacFormat.h"
0022 #include "formats/TranscodingFlacFormat.h"
0023 #include "formats/TranscodingMp3Format.h"
0024 #include "formats/TranscodingOpusFormat.h"
0025 #include "formats/TranscodingVorbisFormat.h"
0026 #include "formats/TranscodingWmaFormat.h"
0027
0028 using namespace Transcoding;
0029
0030 Controller::Controller( QObject *parent )
0031     : QObject( parent )
0032 {
0033     m_formats.insert( JUST_COPY, new NullFormat( JUST_COPY ) );
0034     m_formats.insert( INVALID, new NullFormat( INVALID ) );
0035     m_formats.insert( AAC, new AacFormat() );
0036     m_formats.insert( ALAC, new AlacFormat() );
0037     m_formats.insert( FLAC, new FlacFormat() );
0038     m_formats.insert( MP3, new Mp3Format() );
0039     m_formats.insert( OPUS, new OpusFormat() );
0040     m_formats.insert( VORBIS, new VorbisFormat() );
0041     m_formats.insert( WMA2, new WmaFormat() );
0042
0043     KProcess *verifyAvailability = new KProcess( this );
0044     verifyAvailability->setOutputChannelMode( KProcess::MergedChannels );
0045     verifyAvailability->setProgram( QStringLiteral("ffmpeg") );
0046     *verifyAvailability << QStringLiteral( "-codecs" );
0047     connect( verifyAvailability, QOverload<int, KProcess::ExitStatus>::of(&KProcess::finished),
0048              this, &Controller::onAvailabilityVerified );
0049     verifyAvailability->start();
0050 }
0051
0052 Controller::~Controller()
0053 {
0054     qDeleteAll( m_formats );
0055 }
0056
0057 void
0058 Controller::onAvailabilityVerified( int exitCode, QProcess::ExitStatus exitStatus ) //SLOT
0059 {
0060     Q_UNUSED( exitCode )
0061     Q_UNUSED( exitStatus )
0062     sender()->deleteLater();
0063     QString output = qobject_cast< KProcess * >( sender() )->readAllStandardOutput().data();
0064     if( output.simplified().isEmpty() )
0065         return;
0066     const QStringList lines = output.split( QRegExp( QStringLiteral("\r|\n") ), Qt::SkipEmptyParts );
0067     foreach( Format *format, m_formats )
0068     {
0069         bool formatAvailable = false;
0070         for( const QString &line : lines )
0071         {
0072             formatAvailable |= format->verifyAvailability( line );
0073             if( formatAvailable )
0074                 break;
0075         }
0076         if( formatAvailable )
0077             m_availableEncoders.insert( format->encoder() );
0078     }
0079 }
0080
0081 Format *
0082 Controller::format( Encoder encoder ) const
0083 {
0084     Q_ASSERT(m_formats.contains( encoder ));
0085     return m_formats.value( encoder );
0086 }
0087