src/Decoder_MP3.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 "Decoder_MP3.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 MP3Decoder::MP3Decoder(void)
  37 :
  38         m_binary(lamexp_tools_lookup("mpg123.exe"))
  39 {
  40         if(m_binary.isEmpty())
  41         {
  42                 MUTILS_THROW("Error initializing MPG123 decoder. Tool 'mpg123.exe' is not registred!");
  43         }
  44 }
  45
  46 MP3Decoder::~MP3Decoder(void)
  47 {
  48 }
  49
  50 bool MP3Decoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  51 {
  52         QProcess process;
  53         QStringList args;
  54
  55         args << "-v" << "--utf8" << "-w" << QDir::toNativeSeparators(outputFile);
  56         args << QDir::toNativeSeparators(sourceFile);
  57
  58         if(!startProcess(process, m_binary, args))
  59         {
  60                 return false;
  61         }
  62
  63         bool bTimeout = false;
  64         bool bAborted = false;
  65         int prevProgress = -1;
  66
  67         QRegExp regExp("\\s+Time:\\s+(\\d+):(\\d+)\\.(\\d+)\\s+\\[(\\d+):(\\d+)\\.(\\d+)\\],");
  68
  69         while(process.state() != QProcess::NotRunning)
  70         {
  71                 if(*abortFlag)
  72                 {
  73                         process.kill();
  74                         bAborted = true;
  75                         emit messageLogged("\nABORTED BY USER !!!");
  76                         break;
  77                 }
  78                 process.waitForReadyRead(m_processTimeoutInterval);
  79                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  80                 {
  81                         process.kill();
  82                         qWarning("mpg123 process timed out <-- killing!");
  83                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  84                         bTimeout = true;
  85                         break;
  86                 }
  87                 while(process.bytesAvailable() > 0)
  88                 {
  89                         QByteArray line = process.readLine();
  90                         QString text = QString::fromUtf8(line.constData()).simplified();
  91                         if(regExp.lastIndexIn(text) >= 0)
  92                         {
  93                                 int values[6];
  94                                 for(int i = 0; i < 6; i++)
  95                                 {
  96                                         bool ok = false;
  97                                         int temp = regExp.cap(i+1).toInt(&ok);
  98                                         values[i] = (ok ? temp : 0);
  99                                 }
 100                                 int timeDone = (60 * values[0]) + values[1];
 101                                 int timeLeft = (60 * values[3]) + values[4];
 102                                 if(timeDone > 0 || timeLeft > 0)
 103                                 {
 104                                         int newProgress = qRound((static_cast<double>(timeDone) / static_cast<double>(timeDone + timeLeft)) * 100.0);
 105                                         if(newProgress > prevProgress)
 106                                         {
 107                                                 emit statusUpdated(newProgress);
 108                                                 prevProgress = qMin(newProgress + 2, 99);
 109                                         }
 110                                 }
 111                         }
 112                         else if(!text.isEmpty())
 113                         {
 114                                 emit messageLogged(text);
 115                         }
 116                 }
 117         }
 118
 119         process.waitForFinished();
 120         if(process.state() != QProcess::NotRunning)
 121         {
 122                 process.kill();
 123                 process.waitForFinished(-1);
 124         }
 125
 126         emit statusUpdated(100);
 127         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 128
 129         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS)
 130         {
 131                 return false;
 132         }
 133
 134         return true;
 135 }
 136
 137 bool MP3Decoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 138 {
 139         if(containerType.compare("MPEG Audio", Qt::CaseInsensitive) == 0 || containerType.compare("Wave", Qt::CaseInsensitive) == 0)
 140         {
 141                 if(formatType.compare("MPEG Audio", Qt::CaseInsensitive) == 0)
 142                 {
 143                         if(formatProfile.compare("Layer 3", Qt::CaseInsensitive) == 0 || formatProfile.compare("Layer 2", Qt::CaseInsensitive) == 0)
 144                         {
 145                                 if(formatVersion.compare("Version 1", Qt::CaseInsensitive) == 0 || formatVersion.compare("Version 2", Qt::CaseInsensitive) == 0)
 146                                 {
 147                                         return true;
 148                                 }
 149                         }
 150                 }
 151         }
 152
 153         return false;
 154 }
 155
 156 QStringList MP3Decoder::supportedTypes(void)
 157 {
 158         return QStringList() << "MPEG Audio Layer III (*.mp3 *.mpa)" << "MPEG Audio Layer II (*.mp2 *.mpa)" << "MPEG Audio Layer I ( *.mp1 *.mpa)";
 159 }
 160