src/Decoder_FLAC.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_FLAC.h"
  24
  25 #include "Global.h"
  26
  27 #include <QDir>
  28 #include <QProcess>
  29 #include <QRegExp>
  30
  31 FLACDecoder::FLACDecoder(void)
  32 :
  33         m_binary(lamexp_lookup_tool("flac.exe"))
  34 {
  35         if(m_binary.isEmpty())
  36         {
  37                 THROW("Error initializing FLAC decoder. Tool 'flac.exe' is not registred!");
  38         }
  39 }
  40
  41 FLACDecoder::~FLACDecoder(void)
  42 {
  43 }
  44
  45 bool FLACDecoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  46 {
  47         QProcess process;
  48         QStringList args;
  49
  50         args << "-d" << "-F" << "-f";
  51         args << "-o" << QDir::toNativeSeparators(outputFile);
  52         args << QDir::toNativeSeparators(sourceFile);
  53
  54         if(!startProcess(process, m_binary, args))
  55         {
  56                 return false;
  57         }
  58
  59         bool bTimeout = false;
  60         bool bAborted = false;
  61
  62         QRegExp regExp("\\b(\\d+)% complete");
  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("FLAC 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().replace('\b', char(0x20));
  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) emit statusUpdated(progress);
  91                         }
  92                         else if(!text.isEmpty())
  93                         {
  94                                 emit messageLogged(text);
  95                         }
  96                 }
  97         }
  98
  99         process.waitForFinished();
 100         if(process.state() != QProcess::NotRunning)
 101         {
 102                 process.kill();
 103                 process.waitForFinished(-1);
 104         }
 105
 106         emit statusUpdated(100);
 107         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 108
 109         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS || QFileInfo(outputFile).size() == 0)
 110         {
 111                 return false;
 112         }
 113
 114         return true;
 115 }
 116
 117 bool FLACDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 118 {
 119         if(containerType.compare("FLAC", Qt::CaseInsensitive) == 0 || containerType.compare("OGG", Qt::CaseInsensitive) == 0)
 120         {
 121                 if(formatType.compare("FLAC", Qt::CaseInsensitive) == 0)
 122                 {
 123                         return true;
 124                 }
 125         }
 126
 127         return false;
 128 }
 129
 130 QStringList FLACDecoder::supportedTypes(void)
 131 {
 132         return QStringList() << "Free Lossless Audio Codec (*.flac *.fla)";
 133 }