src/Decoder_Musepack.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2012 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 "Decoder_Musepack.h"
  23
  24 #include "Global.h"
  25
  26 #include <QDir>
  27 #include <QProcess>
  28 #include <QRegExp>
  29 #include <QUuid>
  30
  31 MusepackDecoder::MusepackDecoder(void)
  32 :
  33         m_binary(lamexp_lookup_tool("mpcdec.exe"))
  34 {
  35         if(m_binary.isEmpty())
  36         {
  37                 throw "Error initializing Musepack decoder. Tool 'mpcdec.exe' is not registred!";
  38         }
  39 }
  40
  41 MusepackDecoder::~MusepackDecoder(void)
  42 {
  43 }
  44
  45 bool MusepackDecoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  46 {
  47         QProcess process;
  48         QStringList args;
  49
  50         args << "-v";
  51         args << QDir::toNativeSeparators(sourceFile);
  52         args << QDir::toNativeSeparators(outputFile);
  53
  54         if(!startProcess(process, m_binary, args))
  55         {
  56                 return false;
  57         }
  58
  59         bool bTimeout = false;
  60         bool bAborted = false;
  61         int prevProgress = -1;
  62
  63         QRegExp regExp("Decoding progress: (\\d+)\\.(\\d+)%");
  64
  65         while(process.state() != QProcess::NotRunning)
  66         {
  67                 if(*abortFlag)
  68                 {
  69                         process.kill();
  70                         bAborted = true;
  71                         emit messageLogged("\nABORTED BY USER !!!");
  72                         break;
  73                 }
  74                 process.waitForReadyRead(m_processTimeoutInterval);
  75                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  76                 {
  77                         process.kill();
  78                         qWarning("MpcDec process timed out <-- killing!");
  79                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  80                         bTimeout = true;
  81                         break;
  82                 }
  83                 while(process.bytesAvailable() > 0)
  84                 {
  85                         QByteArray line = process.readLine();
  86                         QString text = QString::fromUtf8(line.constData()).simplified();
  87                         if(regExp.lastIndexIn(text) >= 0)
  88                         {
  89                                 bool ok = false;
  90                                 int progress = regExp.cap(1).toInt(&ok);
  91                                 if(ok && (progress > prevProgress))
  92                                 {
  93                                         emit statusUpdated(progress);
  94                                         prevProgress = qMin(progress + 2, 99);
  95                                 }
  96                         }
  97                         else if(!text.isEmpty())
  98                         {
  99                                 emit messageLogged(text);
 100                         }
 101                 }
 102         }
 103
 104         process.waitForFinished();
 105         if(process.state() != QProcess::NotRunning)
 106         {
 107                 process.kill();
 108                 process.waitForFinished(-1);
 109         }
 110
 111         emit statusUpdated(100);
 112         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 113
 114         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS || QFileInfo(outputFile).size() == 0)
 115         {
 116                 return false;
 117         }
 118
 119         return true;
 120 }
 121
 122 bool MusepackDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 123 {
 124         if(containerType.compare("Musepack SV8", Qt::CaseInsensitive) == 0 || containerType.compare("Musepack SV7", Qt::CaseInsensitive) == 0)
 125         {
 126                 if(formatType.compare("Musepack SV8", Qt::CaseInsensitive) == 0 || formatType.compare("Musepack SV7", Qt::CaseInsensitive) == 0)
 127                 {
 128                         return true;
 129                 }
 130         }
 131
 132         return false;
 133 }
 134
 135 QStringList MusepackDecoder::supportedTypes(void)
 136 {
 137         return QStringList() << "Musepack (*.mpc *.mpp *.mp+)";
 138 }