src/Decoder_Opus.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_Opus.h"
  23
  24 #include "Global.h"
  25
  26 #include <QDir>
  27 #include <QProcess>
  28 #include <QRegExp>
  29 #include <QUuid>
  30
  31 OpusDecoder::OpusDecoder(void)
  32 :
  33         m_binary(lamexp_lookup_tool("opusdec.exe"))
  34 {
  35         if(m_binary.isEmpty())
  36         {
  37                 throw "Error initializing Opus decoder. Tool 'opusdec.exe' is not registred!";
  38         }
  39 }
  40
  41 OpusDecoder::~OpusDecoder(void)
  42 {
  43 }
  44
  45 bool OpusDecoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  46 {
  47         QProcess process;
  48         QStringList args;
  49
  50         args << QDir::toNativeSeparators(sourceFile);
  51         args << QDir::toNativeSeparators(outputFile);
  52
  53         if(!startProcess(process, m_binary, args))
  54         {
  55                 return false;
  56         }
  57
  58         bool bTimeout = false;
  59         bool bAborted = false;
  60         int prevProgress = -1;
  61
  62         QRegExp regExp("\\((\\d+)%\\)");
  63
  64         while(process.state() != QProcess::NotRunning)
  65         {
  66                 if(*abortFlag)
  67                 {
  68                         process.kill();
  69                         bAborted = true;
  70                         emit messageLogged("\nABORTED BY USER !!!");
  71                         break;
  72                 }
  73                 process.waitForReadyRead(m_processTimeoutInterval);
  74                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  75                 {
  76                         process.kill();
  77                         qWarning("opusdec process timed out <-- killing!");
  78                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  79                         bTimeout = true;
  80                         break;
  81                 }
  82                 while(process.bytesAvailable() > 0)
  83                 {
  84                         QByteArray line = process.readLine();
  85                         QString text = QString::fromUtf8(line.constData()).simplified();
  86                         if(regExp.lastIndexIn(text) >= 0)
  87                         {
  88                                 bool ok = false;
  89                                 int progress = regExp.cap(1).toInt(&ok);
  90                                 if(ok && (progress > prevProgress))
  91                                 {
  92                                         emit statusUpdated(progress);
  93                                         prevProgress = qMin(progress + 2, 99);
  94                                 }
  95                         }
  96                         else if(!text.isEmpty())
  97                         {
  98                                 emit messageLogged(text);
  99                         }
 100                 }
 101         }
 102
 103         process.waitForFinished();
 104         if(process.state() != QProcess::NotRunning)
 105         {
 106                 process.kill();
 107                 process.waitForFinished(-1);
 108         }
 109
 110         emit statusUpdated(100);
 111         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 112
 113         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS)
 114         {
 115                 return false;
 116         }
 117
 118         return true;
 119 }
 120
 121 bool OpusDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 122 {
 123         if(containerType.compare("OGG", Qt::CaseInsensitive) == 0)
 124         {
 125                 if(formatType.compare("Opus", Qt::CaseInsensitive) == 0)
 126                 {
 127                         {
 128                                 return true;
 129                         }
 130                 }
 131         }
 132
 133         return false;
 134 }
 135
 136 QStringList OpusDecoder::supportedTypes(void)
 137 {
 138         return QStringList() << "Opus Audio Codec (*.opus *.ogg)";
 139 }
 140