src/Filter_Normalize.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2014 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_Normalize.h"
  24
  25 //Internal
  26 #include "Global.h"
  27
  28 //MUtils
  29 #include <MUtils/Exception.h>
  30
  31 //Qt
  32 #include <QDir>
  33 #include <QProcess>
  34 #include <QRegExp>
  35
  36 NormalizeFilter::NormalizeFilter(int peakVolume, int equalizationMode)
  37 :
  38         m_binary(lamexp_lookup_tool("sox.exe"))
  39 {
  40         if(m_binary.isEmpty())
  41         {
  42                 MUTILS_THROW("Error initializing SoX filter. Tool 'sox.exe' is not registred!");
  43         }
  44
  45         m_peakVolume = qMin(-50, qMax(-3200, peakVolume));
  46         m_equalizationMode = qMin(2, qMax(0, equalizationMode));
  47 }
  48
  49 NormalizeFilter::~NormalizeFilter(void)
  50 {
  51 }
  52
  53 bool NormalizeFilter::apply(const QString &sourceFile, const QString &outputFile, AudioFileModel_TechInfo *formatInfo, volatile bool *abortFlag)
  54 {
  55         QProcess process;
  56         QStringList args;
  57         QString eqMode = (m_equalizationMode == 0) ? "-n" : ((m_equalizationMode == 1) ? "-ne" : "-nb");
  58
  59         process.setWorkingDirectory(QFileInfo(outputFile).canonicalPath());
  60
  61         args << "-V3" << "-S";
  62         args << "--temp" << ".";
  63         args << QDir::toNativeSeparators(sourceFile);
  64         args << QDir::toNativeSeparators(outputFile);
  65         args << "gain";
  66         args << eqMode << QString().sprintf("%.2f", static_cast<double>(m_peakVolume) / 100.0);
  67
  68         if(!startProcess(process, m_binary, args))
  69         {
  70                 return false;
  71         }
  72
  73         bool bTimeout = false;
  74         bool bAborted = false;
  75
  76         QRegExp regExp("In:(\\d+)(\\.\\d+)*%");
  77
  78         while(process.state() != QProcess::NotRunning)
  79         {
  80                 if(*abortFlag)
  81                 {
  82                         process.kill();
  83                         bAborted = true;
  84                         emit messageLogged("\nABORTED BY USER !!!");
  85                         break;
  86                 }
  87                 process.waitForReadyRead(m_processTimeoutInterval);
  88                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  89                 {
  90                         process.kill();
  91                         qWarning("SoX process timed out <-- killing!");
  92                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  93                         bTimeout = true;
  94                         break;
  95                 }
  96                 while(process.bytesAvailable() > 0)
  97                 {
  98                         QByteArray line = process.readLine();
  99                         QString text = QString::fromUtf8(line.constData()).simplified();
 100                         if(regExp.lastIndexIn(text) >= 0)
 101                         {
 102                                 bool ok = false;
 103                                 int progress = regExp.cap(1).toInt(&ok);
 104                                 if(ok) emit statusUpdated(progress);
 105                         }
 106                         else if(!text.isEmpty())
 107                         {
 108                                 emit messageLogged(text);
 109                         }
 110                 }
 111         }
 112
 113         process.waitForFinished();
 114         if(process.state() != QProcess::NotRunning)
 115         {
 116                 process.kill();
 117                 process.waitForFinished(-1);
 118         }
 119
 120         emit statusUpdated(100);
 121         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 122
 123         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS || QFileInfo(outputFile).size() == 0)
 124         {
 125                 return false;
 126         }
 127
 128         return true;
 129 }