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 bool OpusDecoder::m_disableResampling = false;
  32
  33 OpusDecoder::OpusDecoder(void)
  34 :
  35         m_binary(lamexp_lookup_tool("opusdec.exe"))
  36 {
  37         if(m_binary.isEmpty())
  38         {
  39                 throw "Error initializing Opus decoder. Tool 'opusdec.exe' is not registred!";
  40         }
  41 }
  42
  43 OpusDecoder::~OpusDecoder(void)
  44 {
  45 }
  46
  47 bool OpusDecoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  48 {
  49         QProcess process;
  50         QStringList args;
  51
  52         if(m_disableResampling)
  53         {
  54                 args << "--no-resample";
  55         }
  56
  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("\\((\\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("opusdec 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)
 121         {
 122                 return false;
 123         }
 124
 125         return true;
 126 }
 127
 128 bool OpusDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 129 {
 130         if(containerType.compare("OGG", Qt::CaseInsensitive) == 0)
 131         {
 132                 if(formatType.compare("Opus", Qt::CaseInsensitive) == 0)
 133                 {
 134                         {
 135                                 return true;
 136                         }
 137                 }
 138         }
 139
 140         return false;
 141 }
 142
 143 QStringList OpusDecoder::supportedTypes(void)
 144 {
 145         return QStringList() << "Opus Audio Codec (*.opus *.ogg)";
 146 }
 147