src/Filter_Downmix.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2017 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 2 of the License, or
   8 // (at your option) any later version, but always including the *additional*
   9 // restrictions defined in the "License.txt" file.
  10 //
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License along
  17 // with this program; if not, write to the Free Software Foundation, Inc.,
  18 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 //
  20 // http://www.gnu.org/licenses/gpl-2.0.txt
  21 ///////////////////////////////////////////////////////////////////////////////
  22
  23 #include "Filter_Downmix.h"
  24
  25 //Internal
  26 #include "Global.h"
  27 #include "Tool_WaveProperties.h"
  28 #include "Model_AudioFile.h"
  29
  30 //MUtils
  31 #include <MUtils/Exception.h>
  32
  33 //Qt
  34 #include <QDir>
  35 #include <QProcess>
  36 #include <QRegExp>
  37
  38 #define IS_VALID(X) (((X) != 0U) && ((X) != UINT_MAX))
  39
  40 DownmixFilter::DownmixFilter(void)
  41 :
  42         m_binary(lamexp_tools_lookup("sox.exe"))
  43 {
  44         if(m_binary.isEmpty())
  45         {
  46                 MUTILS_THROW("Error initializing SoX filter. Tool 'sox.exe' is not registred!");
  47         }
  48 }
  49
  50 DownmixFilter::~DownmixFilter(void)
  51 {
  52 }
  53
  54 AbstractFilter::FilterResult DownmixFilter::apply(const QString &sourceFile, const QString &outputFile, AudioFileModel_TechInfo *const formatInfo, volatile bool *abortFlag)
  55 {
  56         unsigned int channels = formatInfo->audioChannels();
  57         emit messageLogged(QString().sprintf("--> Number of channels is: %d\n", channels));
  58
  59         if(IS_VALID(channels) && (channels <= 2))
  60         {
  61                 messageLogged("Skipping downmix!");
  62                 qDebug("Dowmmix not required/possible for Mono or Stereo input, skipping!");
  63                 return AbstractFilter::FILTER_SKIPPED;
  64         }
  65
  66         QProcess process;
  67         QStringList args;
  68
  69         args << "-V3" << "-S";
  70         args << "--guard" << "--temp" << ".";
  71         args << QDir::toNativeSeparators(sourceFile);
  72         args << QDir::toNativeSeparators(outputFile);
  73
  74         switch(channels)
  75         {
  76         case 3: //3.0 (L/R/C)
  77                 args << "remix" << "1v0.66,3v0.34" << "2v0.66,3v0.34";
  78                 break;
  79         case 4: //3.1 (L/R/C/LFE)
  80                 args << "remix" << "1v0.5,3v0.25,4v0.25" << "2v0.5,3v0.25,4v0.25";
  81                 break;
  82         case 5: //5.0 (L/R/C/BL/BR)
  83                 args << "remix" << "1v0.5,3v0.25,4v0.25" << "2v0.5,3v0.25,5v0.25";
  84                 break;
  85         case 6: //5.1 (L/R/C/LFE/BL/BR)
  86                 args << "remix" << "1v0.4,3v0.2,4v0.2,5v0.2" << "2v0.4,3v0.2,4v0.2,6v0.2";
  87                 break;
  88         case 7: //7.0 (L/R/C/BL/BR/SL/SR)
  89                 args << "remix" << "1v0.4,3v0.2,4v0.2,6v0.2" << "2v0.4,3v0.2,5v0.2,7v0.2";
  90                 break;
  91         case 8: //7.1 (L/R/C/LFE/BL/BR/SL/SR)
  92                 args << "remix" << "1v0.36,3v0.16,4v0.16,5v0.16,7v0.16" << "2v0.36,3v0.16,4v0.16,6v0.16,8v0.16";
  93                 break;
  94         case 9: //8.1 (L/R/C/LFE/BL/BR/SL/SR/BC)
  95                 args << "remix" << "1v0.308,3v0.154,4v0.154,5v0.154,7v0.154,9v0.076" << "2v0.308,3v0.154,4v0.154,6v0.154,8v0.154,9v0.076";
  96                 break;
  97         default: //Unknown
  98                 qWarning("Downmixer: Unknown channel configuration!");
  99                 args << "channels" << QString::number(2);
 100                 break;
 101         }
 102
 103         if(!startProcess(process, m_binary, args, QFileInfo(outputFile).canonicalPath()))
 104         {
 105                 return AbstractFilter::FILTER_FAILURE;
 106         }
 107
 108         bool bTimeout = false;
 109         bool bAborted = false;
 110
 111         QRegExp regExp("In:(\\d+)(\\.\\d+)*%");
 112
 113         while(process.state() != QProcess::NotRunning)
 114         {
 115                 if(*abortFlag)
 116                 {
 117                         process.kill();
 118                         bAborted = true;
 119                         emit messageLogged("\nABORTED BY USER !!!");
 120                         break;
 121                 }
 122                 process.waitForReadyRead(m_processTimeoutInterval);
 123                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
 124                 {
 125                         process.kill();
 126                         qWarning("SoX process timed out <-- killing!");
 127                         emit messageLogged("\nPROCESS TIMEOUT !!!");
 128                         bTimeout = true;
 129                         break;
 130                 }
 131                 while(process.bytesAvailable() > 0)
 132                 {
 133                         QByteArray line = process.readLine();
 134                         QString text = QString::fromUtf8(line.constData()).simplified();
 135                         if(regExp.lastIndexIn(text) >= 0)
 136                         {
 137                                 bool ok = false;
 138                                 int progress = regExp.cap(1).toInt(&ok);
 139                                 if(ok) emit statusUpdated(progress);
 140                         }
 141                         else if(!text.isEmpty())
 142                         {
 143                                 emit messageLogged(text);
 144                         }
 145                 }
 146         }
 147
 148         process.waitForFinished();
 149         if(process.state() != QProcess::NotRunning)
 150         {
 151                 process.kill();
 152                 process.waitForFinished(-1);
 153         }
 154
 155         emit statusUpdated(100);
 156         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 157
 158         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS || QFileInfo(outputFile).size() == 0)
 159         {
 160                 return AbstractFilter::FILTER_FAILURE;
 161         }
 162
 163         formatInfo->setAudioChannels(2);
 164         return AbstractFilter::FILTER_SUCCESS;
 165 }