src/Filter_Normalize.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2011 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.
   9 //
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License along
  16 // with this program; if not, write to the Free Software Foundation, Inc.,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 // http://www.gnu.org/licenses/gpl-2.0.txt
  20 ///////////////////////////////////////////////////////////////////////////////
  21
  22 #include "Filter_Normalize.h"
  23
  24 #include "Global.h"
  25
  26 #include <QDir>
  27 #include <QProcess>
  28 #include <QRegExp>
  29
  30 NormalizeFilter::NormalizeFilter(int peakVolume, int equalizationMode)
  31 :
  32         m_binary(lamexp_lookup_tool("sox.exe"))
  33 {
  34         if(m_binary.isEmpty())
  35         {
  36                 throw "Error initializing SoX filter. Tool 'sox.exe' is not registred!";
  37         }
  38
  39         m_peakVolume = qMin(-50, qMax(-3200, peakVolume));
  40         m_equalizationMode = qMin(2, qMax(0, equalizationMode));
  41 }
  42
  43 NormalizeFilter::~NormalizeFilter(void)
  44 {
  45 }
  46
  47 bool NormalizeFilter::apply(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  48 {
  49         QProcess process;
  50         QStringList args;
  51         QString eqMode = (m_equalizationMode == 0) ? "-ne" : ((m_equalizationMode == 1) ? "-nb" : "-n");
  52
  53         process.setWorkingDirectory(QFileInfo(outputFile).canonicalPath());
  54
  55         args << "-V3" << "-S";
  56         args << "--temp" << ".";
  57         args << QDir::toNativeSeparators(sourceFile);
  58         args << QDir::toNativeSeparators(outputFile);
  59         args << "gain";
  60         args << eqMode << QString().sprintf("%.2f", static_cast<double>(m_peakVolume) / 100.0);
  61
  62         if(!startProcess(process, m_binary, args))
  63         {
  64                 return false;
  65         }
  66
  67         bool bTimeout = false;
  68         bool bAborted = false;
  69
  70         QRegExp regExp("In:(\\d+)(\\.\\d+)*%");
  71
  72         while(process.state() != QProcess::NotRunning)
  73         {
  74                 if(*abortFlag)
  75                 {
  76                         process.kill();
  77                         bAborted = true;
  78                         emit messageLogged("\nABORTED BY USER !!!");
  79                         break;
  80                 }
  81                 process.waitForReadyRead(m_processTimeoutInterval);
  82                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  83                 {
  84                         process.kill();
  85                         qWarning("SoX process timed out <-- killing!");
  86                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  87                         bTimeout = true;
  88                         break;
  89                 }
  90                 while(process.bytesAvailable() > 0)
  91                 {
  92                         QByteArray line = process.readLine();
  93                         QString text = QString::fromUtf8(line.constData()).simplified();
  94                         if(regExp.lastIndexIn(text) >= 0)
  95                         {
  96                                 bool ok = false;
  97                                 int progress = regExp.cap(1).toInt(&ok);
  98                                 if(ok) emit statusUpdated(progress);
  99                         }
 100                         else if(!text.isEmpty())
 101                         {
 102                                 emit messageLogged(text);
 103                         }
 104                 }
 105         }
 106
 107         process.waitForFinished();
 108         if(process.state() != QProcess::NotRunning)
 109         {
 110                 process.kill();
 111                 process.waitForFinished(-1);
 112         }
 113
 114         emit statusUpdated(100);
 115         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 116
 117         if(bTimeout || bAborted || process.exitStatus() != QProcess::NormalExit || QFileInfo(outputFile).size() == 0)
 118         {
 119                 return false;
 120         }
 121
 122         return true;
 123 }