src/Filter_Normalize.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2015 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/Global.h>
  30 #include <MUtils/Exception.h>
  31
  32 //Qt
  33 #include <QDir>
  34 #include <QProcess>
  35 #include <QRegExp>
  36
  37 static double dbToLinear(const double &value)
  38 {
  39         return pow(10.0, value / 20.0);
  40 }
  41
  42 NormalizeFilter::NormalizeFilter(const int &peakVolume, const bool &dnyAudNorm, const bool &channelsCoupled, const int &filterSize)
  43 :
  44         m_binary(lamexp_tools_lookup("sox.exe")),
  45         m_useDynAudNorm(dnyAudNorm),
  46         m_peakVolume(qMin(-50, qMax(-3200, peakVolume))),
  47         m_channelsCoupled(channelsCoupled),
  48         m_filterLength(qBound(3, filterSize + (1 - (filterSize % 2)), 301))
  49 {
  50         if(m_binary.isEmpty())
  51         {
  52                 MUTILS_THROW("Error initializing SoX filter. Tool 'sox.exe' is not registred!");
  53         }
  54 }
  55
  56 NormalizeFilter::~NormalizeFilter(void)
  57 {
  58 }
  59
  60 bool NormalizeFilter::apply(const QString &sourceFile, const QString &outputFile, AudioFileModel_TechInfo *formatInfo, volatile bool *abortFlag)
  61 {
  62         QProcess process;
  63         QStringList args;
  64
  65         process.setWorkingDirectory(QFileInfo(outputFile).canonicalPath());
  66
  67         args << "-V3" << "-S";
  68         args << "--temp" << ".";
  69         args << QDir::toNativeSeparators(sourceFile);
  70         args << QDir::toNativeSeparators(outputFile);
  71
  72         if(!m_useDynAudNorm)
  73         {
  74                 args << "gain";
  75                 args << (m_channelsCoupled ? "-n" : "-nb");
  76                 args << QString().sprintf("%.2f", static_cast<double>(m_peakVolume) / 100.0);
  77         }
  78         else
  79         {
  80                 args << "dynaudnorm";
  81                 args << "-p" << QString().sprintf("%.2f", qBound(0.1, dbToLinear(static_cast<double>(m_peakVolume) / 100.0), 1.0));
  82                 args << "-g" << QString().sprintf("%d", m_filterLength);
  83                 if(!m_channelsCoupled)
  84                 {
  85                         args << "-n";
  86                 }
  87         }
  88
  89         if(!startProcess(process, m_binary, args))
  90         {
  91                 return false;
  92         }
  93
  94         bool bTimeout = false;
  95         bool bAborted = false;
  96
  97         QRegExp regExp("In:(\\d+)(\\.\\d+)*%");
  98
  99         while(process.state() != QProcess::NotRunning)
 100         {
 101                 if(*abortFlag)
 102                 {
 103                         process.kill();
 104                         bAborted = true;
 105                         emit messageLogged("\nABORTED BY USER !!!");
 106                         break;
 107                 }
 108                 process.waitForReadyRead(m_processTimeoutInterval);
 109                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
 110                 {
 111                         process.kill();
 112                         qWarning("SoX process timed out <-- killing!");
 113                         emit messageLogged("\nPROCESS TIMEOUT !!!");
 114                         bTimeout = true;
 115                         break;
 116                 }
 117                 while(process.bytesAvailable() > 0)
 118                 {
 119                         QByteArray line = process.readLine();
 120                         QString text = QString::fromUtf8(line.constData()).simplified();
 121                         if(regExp.lastIndexIn(text) >= 0)
 122                         {
 123                                 bool ok = false;
 124                                 int progress = regExp.cap(1).toInt(&ok);
 125                                 if(ok) emit statusUpdated(progress);
 126                         }
 127                         else if(!text.isEmpty())
 128                         {
 129                                 emit messageLogged(text);
 130                         }
 131                 }
 132         }
 133
 134         process.waitForFinished();
 135         if(process.state() != QProcess::NotRunning)
 136         {
 137                 process.kill();
 138                 process.waitForFinished(-1);
 139         }
 140
 141         emit statusUpdated(100);
 142         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 143
 144         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS || QFileInfo(outputFile).size() == 0)
 145         {
 146                 return false;
 147         }
 148
 149         return true;
 150 }