src/Decoder_Musepack.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 "Decoder_Musepack.h"
  24
  25 #include "Global.h"
  26
  27 #include <QDir>
  28 #include <QProcess>
  29 #include <QRegExp>
  30 #include <QUuid>
  31
  32 MusepackDecoder::MusepackDecoder(void)
  33 :
  34         m_binary(lamexp_lookup_tool("mpcdec.exe"))
  35 {
  36         if(m_binary.isEmpty())
  37         {
  38                 THROW("Error initializing Musepack decoder. Tool 'mpcdec.exe' is not registred!");
  39         }
  40 }
  41
  42 MusepackDecoder::~MusepackDecoder(void)
  43 {
  44 }
  45
  46 bool MusepackDecoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  47 {
  48         QProcess process;
  49         QStringList args;
  50
  51         args << "-v";
  52         args << QDir::toNativeSeparators(sourceFile);
  53         args << QDir::toNativeSeparators(outputFile);
  54
  55         if(!startProcess(process, m_binary, args))
  56         {
  57                 return false;
  58         }
  59
  60         bool bTimeout = false;
  61         bool bAborted = false;
  62         int prevProgress = -1;
  63
  64         QRegExp regExp("Decoding progress: (\\d+)\\.(\\d+)%");
  65
  66         while(process.state() != QProcess::NotRunning)
  67         {
  68                 if(*abortFlag)
  69                 {
  70                         process.kill();
  71                         bAborted = true;
  72                         emit messageLogged("\nABORTED BY USER !!!");
  73                         break;
  74                 }
  75                 process.waitForReadyRead(m_processTimeoutInterval);
  76                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  77                 {
  78                         process.kill();
  79                         qWarning("MpcDec process timed out <-- killing!");
  80                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  81                         bTimeout = true;
  82                         break;
  83                 }
  84                 while(process.bytesAvailable() > 0)
  85                 {
  86                         QByteArray line = process.readLine();
  87                         QString text = QString::fromUtf8(line.constData()).simplified();
  88                         if(regExp.lastIndexIn(text) >= 0)
  89                         {
  90                                 bool ok = false;
  91                                 int progress = regExp.cap(1).toInt(&ok);
  92                                 if(ok && (progress > prevProgress))
  93                                 {
  94                                         emit statusUpdated(progress);
  95                                         prevProgress = qMin(progress + 2, 99);
  96                                 }
  97                         }
  98                         else if(!text.isEmpty())
  99                         {
 100                                 emit messageLogged(text);
 101                         }
 102                 }
 103         }
 104
 105         process.waitForFinished();
 106         if(process.state() != QProcess::NotRunning)
 107         {
 108                 process.kill();
 109                 process.waitForFinished(-1);
 110         }
 111
 112         emit statusUpdated(100);
 113         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 114
 115         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS || QFileInfo(outputFile).size() == 0)
 116         {
 117                 return false;
 118         }
 119
 120         return true;
 121 }
 122
 123 bool MusepackDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 124 {
 125         if(containerType.compare("Musepack SV8", Qt::CaseInsensitive) == 0 || containerType.compare("Musepack SV7", Qt::CaseInsensitive) == 0)
 126         {
 127                 if(formatType.compare("Musepack SV8", Qt::CaseInsensitive) == 0 || formatType.compare("Musepack SV7", Qt::CaseInsensitive) == 0)
 128                 {
 129                         return true;
 130                 }
 131         }
 132
 133         return false;
 134 }
 135
 136 QStringList MusepackDecoder::supportedTypes(void)
 137 {
 138         return QStringList() << "Musepack (*.mpc *.mpp *.mp+)";
 139 }