src/Decoder_FLAC.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2015 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_FLAC.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 FLACDecoder::FLACDecoder(void)
  37 :
  38         m_binary(lamexp_tools_lookup("flac.exe"))
  39 {
  40         if(m_binary.isEmpty())
  41         {
  42                 MUTILS_THROW("Error initializing FLAC decoder. Tool 'flac.exe' is not registred!");
  43         }
  44 }
  45
  46 FLACDecoder::~FLACDecoder(void)
  47 {
  48 }
  49
  50 bool FLACDecoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  51 {
  52         QProcess process;
  53         QStringList args;
  54
  55         args << "-d" << "-F" << "-f";
  56         args << "-o" << QDir::toNativeSeparators(outputFile);
  57         args << QDir::toNativeSeparators(sourceFile);
  58
  59         if(!startProcess(process, m_binary, args))
  60         {
  61                 return false;
  62         }
  63
  64         bool bTimeout = false;
  65         bool bAborted = false;
  66
  67         QRegExp regExp("\\b(\\d+)% complete");
  68
  69         while(process.state() != QProcess::NotRunning)
  70         {
  71                 if(*abortFlag)
  72                 {
  73                         process.kill();
  74                         bAborted = true;
  75                         emit messageLogged("\nABORTED BY USER !!!");
  76                         break;
  77                 }
  78                 process.waitForReadyRead(m_processTimeoutInterval);
  79                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  80                 {
  81                         process.kill();
  82                         qWarning("FLAC process timed out <-- killing!");
  83                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  84                         bTimeout = true;
  85                         break;
  86                 }
  87                 while(process.bytesAvailable() > 0)
  88                 {
  89                         QByteArray line = process.readLine().replace('\b', char(0x20));
  90                         QString text = QString::fromUtf8(line.constData()).simplified();
  91                         if(regExp.lastIndexIn(text) >= 0)
  92                         {
  93                                 bool ok = false;
  94                                 int progress = regExp.cap(1).toInt(&ok);
  95                                 if(ok) emit statusUpdated(progress);
  96                         }
  97                         else if(!text.isEmpty())
  98                         {
  99                                 emit messageLogged(text);
 100                         }
 101                 }
 102         }
 103
 104         process.waitForFinished();
 105         if(process.state() != QProcess::NotRunning)
 106         {
 107                 process.kill();
 108                 process.waitForFinished(-1);
 109         }
 110
 111         emit statusUpdated(100);
 112         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 113
 114         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS || QFileInfo(outputFile).size() == 0)
 115         {
 116                 return false;
 117         }
 118
 119         return true;
 120 }
 121
 122 bool FLACDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 123 {
 124         if(containerType.compare("FLAC", Qt::CaseInsensitive) == 0 || containerType.compare("OGG", Qt::CaseInsensitive) == 0)
 125         {
 126                 if(formatType.compare("FLAC", Qt::CaseInsensitive) == 0)
 127                 {
 128                         return true;
 129                 }
 130         }
 131
 132         return false;
 133 }
 134
 135 QStringList FLACDecoder::supportedTypes(void)
 136 {
 137         return QStringList() << "Free Lossless Audio Codec (*.flac *.fla)";
 138 }