src/Decoder_AC3.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2011 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_AC3.h"
  23
  24 #include "Global.h"
  25
  26 #include <QDir>
  27 #include <QProcess>
  28 #include <QRegExp>
  29
  30 AC3Decoder::AC3Decoder(void)
  31 :
  32         m_binary(lamexp_lookup_tool("valdec.exe"))
  33 {
  34         if(m_binary.isEmpty())
  35         {
  36                 throw "Error initializing Valib decoder. Tool 'valdec.exe' is not registred!";
  37         }
  38 }
  39
  40 AC3Decoder::~AC3Decoder(void)
  41 {
  42 }
  43
  44 bool AC3Decoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  45 {
  46         QProcess process;
  47         QStringList args;
  48
  49         args << QDir::toNativeSeparators(sourceFile);
  50         args << "-w" << QDir::toNativeSeparators(outputFile);
  51
  52         if(!startProcess(process, m_binary, args))
  53         {
  54                 return false;
  55         }
  56
  57         bool bTimeout = false;
  58         bool bAborted = false;
  59
  60         QRegExp regExp("\\[(\\d+)\\.(\\d+)%\\]");
  61
  62         while(process.state() != QProcess::NotRunning)
  63         {
  64                 if(*abortFlag)
  65                 {
  66                         process.kill();
  67                         bAborted = true;
  68                         emit messageLogged("\nABORTED BY USER !!!");
  69                         break;
  70                 }
  71                 process.waitForReadyRead();
  72                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  73                 {
  74                         process.kill();
  75                         qWarning("Valdec process timed out <-- killing!");
  76                         bTimeout = true;
  77                         break;
  78                 }
  79                 while(process.bytesAvailable() > 0)
  80                 {
  81                         QByteArray line = process.readLine();
  82                         QString text = QString::fromUtf8(line.constData()).simplified();
  83                         if(regExp.lastIndexIn(text) >= 0)
  84                         {
  85                                 bool ok = false;
  86                                 int progress = regExp.cap(1).toInt(&ok);
  87                                 if(ok) emit statusUpdated(progress);
  88                         }
  89                         else if(!text.isEmpty())
  90                         {
  91                                 emit messageLogged(text);
  92                         }
  93                 }
  94         }
  95
  96         process.waitForFinished();
  97         if(process.state() != QProcess::NotRunning)
  98         {
  99                 process.kill();
 100                 process.waitForFinished(-1);
 101         }
 102
 103         emit statusUpdated(100);
 104         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 105
 106         if(bTimeout || bAborted || process.exitStatus() != QProcess::NormalExit || QFileInfo(outputFile).size() == 0)
 107         {
 108                 return false;
 109         }
 110
 111         return true;
 112 }
 113
 114 bool AC3Decoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 115 {
 116         if(containerType.compare("AC-3", Qt::CaseInsensitive) == 0)
 117         {
 118                 if(formatType.compare("AC-3", Qt::CaseInsensitive) == 0)
 119                 {
 120                         return true;
 121                 }
 122         }
 123         else if(containerType.compare("DTS", Qt::CaseInsensitive) == 0)
 124         {
 125                 if(formatType.compare("DTS", Qt::CaseInsensitive) == 0)
 126                 {
 127                         return true;
 128                 }
 129         }
 130         else if(containerType.compare("Wave", Qt::CaseInsensitive) == 0)
 131         {
 132                 if(formatType.compare("AC-3", Qt::CaseInsensitive) == 0 || formatType.compare("DTS", Qt::CaseInsensitive) == 0)
 133                 {
 134                         return true;
 135                 }
 136         }
 137
 138         return false;
 139 }
 140
 141 QStringList AC3Decoder::supportedTypes(void)
 142 {
 143         return QStringList() << "AC-3 / ATSC A/52 (*.ac3 *.wav)" << "Digital Theater System (*.dts)";
 144 }
 145