src/Decoder_Musepack.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2016 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 //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 #include <QUuid>
  36
  37 MusepackDecoder::MusepackDecoder(void)
  38 :
  39         m_binary(lamexp_tools_lookup("mpcdec.exe"))
  40 {
  41         if(m_binary.isEmpty())
  42         {
  43                 MUTILS_THROW("Error initializing Musepack decoder. Tool 'mpcdec.exe' is not registred!");
  44         }
  45 }
  46
  47 MusepackDecoder::~MusepackDecoder(void)
  48 {
  49 }
  50
  51 bool MusepackDecoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  52 {
  53         QProcess process;
  54         QStringList args;
  55
  56         args << "-v";
  57         args << QDir::toNativeSeparators(sourceFile);
  58         args << QDir::toNativeSeparators(outputFile);
  59
  60         if(!startProcess(process, m_binary, args))
  61         {
  62                 return false;
  63         }
  64
  65         bool bTimeout = false;
  66         bool bAborted = false;
  67         int prevProgress = -1;
  68
  69         QRegExp regExp("Decoding progress: (\\d+)\\.(\\d+)%");
  70
  71         while(process.state() != QProcess::NotRunning)
  72         {
  73                 if(*abortFlag)
  74                 {
  75                         process.kill();
  76                         bAborted = true;
  77                         emit messageLogged("\nABORTED BY USER !!!");
  78                         break;
  79                 }
  80                 process.waitForReadyRead(m_processTimeoutInterval);
  81                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  82                 {
  83                         process.kill();
  84                         qWarning("MpcDec process timed out <-- killing!");
  85                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  86                         bTimeout = true;
  87                         break;
  88                 }
  89                 while(process.bytesAvailable() > 0)
  90                 {
  91                         QByteArray line = process.readLine();
  92                         QString text = QString::fromUtf8(line.constData()).simplified();
  93                         if(regExp.lastIndexIn(text) >= 0)
  94                         {
  95                                 bool ok = false;
  96                                 int progress = regExp.cap(1).toInt(&ok);
  97                                 if(ok && (progress > prevProgress))
  98                                 {
  99                                         emit statusUpdated(progress);
 100                                         prevProgress = qMin(progress + 2, 99);
 101                                 }
 102                         }
 103                         else if(!text.isEmpty())
 104                         {
 105                                 emit messageLogged(text);
 106                         }
 107                 }
 108         }
 109
 110         process.waitForFinished();
 111         if(process.state() != QProcess::NotRunning)
 112         {
 113                 process.kill();
 114                 process.waitForFinished(-1);
 115         }
 116
 117         emit statusUpdated(100);
 118         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 119
 120         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS || QFileInfo(outputFile).size() == 0)
 121         {
 122                 return false;
 123         }
 124
 125         return true;
 126 }
 127
 128 bool MusepackDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 129 {
 130         if(containerType.compare("Musepack SV8", Qt::CaseInsensitive) == 0 || containerType.compare("Musepack SV7", Qt::CaseInsensitive) == 0)
 131         {
 132                 if(formatType.compare("Musepack SV8", Qt::CaseInsensitive) == 0 || formatType.compare("Musepack SV7", Qt::CaseInsensitive) == 0)
 133                 {
 134                         return true;
 135                 }
 136         }
 137
 138         return false;
 139 }
 140
 141 const AbstractDecoder::supportedType_t *MusepackDecoder::supportedTypes(void)
 142 {
 143         static const char *exts[] =
 144         {
 145                 "mpc", "mpp", "mp+", NULL
 146         };
 147
 148         static const supportedType_t s_supportedTypes[] =
 149         {
 150                 { "Musepack", exts },
 151                 { NULL, NULL }
 152         };
 153
 154         return s_supportedTypes;
 155 }