src/Decoder_AAC.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2014 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_AAC.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
  36 AACDecoder::AACDecoder(void)
  37 :
  38         m_binary(lamexp_lookup_tool("faad.exe"))
  39 {
  40         if(m_binary.isEmpty())
  41         {
  42                 MUTILS_THROW("Error initializing AAC decoder. Tool 'faad.exe' is not registred!");
  43         }
  44 }
  45
  46 AACDecoder::~AACDecoder(void)
  47 {
  48 }
  49
  50 bool AACDecoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  51 {
  52         QProcess process;
  53         QStringList args;
  54
  55         args << "-o" << QDir::toNativeSeparators(outputFile);
  56         args << QDir::toNativeSeparators(sourceFile);
  57
  58         if(!startProcess(process, m_binary, args))
  59         {
  60                 return false;
  61         }
  62
  63         bool bTimeout = false;
  64         bool bAborted = false;
  65
  66         QRegExp regExp("\\[(\\d+)%\\]\\s+decoding\\s+");
  67
  68         while(process.state() != QProcess::NotRunning)
  69         {
  70                 if(*abortFlag)
  71                 {
  72                         process.kill();
  73                         bAborted = true;
  74                         emit messageLogged("\nABORTED BY USER !!!");
  75                         break;
  76                 }
  77                 process.waitForReadyRead(m_processTimeoutInterval);
  78                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  79                 {
  80                         process.kill();
  81                         qWarning("FAAD process timed out <-- killing!");
  82                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  83                         bTimeout = true;
  84                         break;
  85                 }
  86                 while(process.bytesAvailable() > 0)
  87                 {
  88                         QByteArray line = process.readLine();
  89                         QString text = QString::fromUtf8(line.constData()).simplified();
  90                         if(regExp.lastIndexIn(text) >= 0)
  91                         {
  92                                 bool ok = false;
  93                                 int progress = regExp.cap(1).toInt(&ok);
  94                                 if(ok) emit statusUpdated(progress);
  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 || QFileInfo(outputFile).size() == 0)
 114         {
 115                 return false;
 116         }
 117
 118         return true;
 119 }
 120
 121 bool AACDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 122 {
 123         if(containerType.compare("ADTS", Qt::CaseInsensitive) == 0 || containerType.compare("MPEG-4", Qt::CaseInsensitive) == 0)
 124         {
 125                 if(formatType.compare("AAC", Qt::CaseInsensitive) == 0)
 126                 {
 127                         QStringList profileParts = formatProfile.split(" ", QString::SkipEmptyParts);
 128                         if(profileParts.contains("LC", Qt::CaseInsensitive) || profileParts.contains("HE-AAC", Qt::CaseInsensitive) || profileParts.contains("HE-AACv2", Qt::CaseInsensitive))
 129                         {
 130                                 if(formatVersion.compare("Version 2", Qt::CaseInsensitive) == 0 || formatVersion.compare("Version 4", Qt::CaseInsensitive) == 0 || formatVersion.isEmpty())
 131                                 {
 132                                         return true;
 133                                 }
 134                         }
 135                 }
 136         }
 137
 138         return false;
 139 }
 140
 141 QStringList AACDecoder::supportedTypes(void)
 142 {
 143         return QStringList() << "Advanced Audio Coding (*.aac *.mp4 *.m4a)";
 144 }