src/Decoder_FLAC.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_FLAC.h"
  23
  24 #include "Global.h"
  25
  26 #include <QDir>
  27 #include <QProcess>
  28 #include <QRegExp>
  29
  30 FLACDecoder::FLACDecoder(void)
  31 :
  32         m_binary(lamexp_lookup_tool("flac.exe"))
  33 {
  34         if(m_binary.isEmpty())
  35         {
  36                 throw "Error initializing FLAC decoder. Tool 'flac.exe' is not registred!";
  37         }
  38 }
  39
  40 FLACDecoder::~FLACDecoder(void)
  41 {
  42 }
  43
  44 bool FLACDecoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  45 {
  46         QProcess process;
  47         QStringList args;
  48
  49         args << "-d" << "-F" << "-f";
  50         args << "-o" << QDir::toNativeSeparators(outputFile);
  51         args << QDir::toNativeSeparators(sourceFile);
  52
  53         if(!startProcess(process, m_binary, args))
  54         {
  55                 return false;
  56         }
  57
  58         bool bTimeout = false;
  59         bool bAborted = false;
  60
  61         QRegExp regExp("\\s(\\d+)% complete");
  62
  63         while(process.state() != QProcess::NotRunning)
  64         {
  65                 if(*abortFlag)
  66                 {
  67                         process.kill();
  68                         bAborted = true;
  69                         emit messageLogged("\nABORTED BY USER !!!");
  70                         break;
  71                 }
  72                 process.waitForReadyRead(m_processTimeoutInterval);
  73                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  74                 {
  75                         process.kill();
  76                         qWarning("FLAC process timed out <-- killing!");
  77                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  78                         bTimeout = true;
  79                         break;
  80                 }
  81                 while(process.bytesAvailable() > 0)
  82                 {
  83                         QByteArray line = process.readLine();
  84                         QString text = QString::fromUtf8(line.constData()).simplified();
  85                         if(regExp.lastIndexIn(text) >= 0)
  86                         {
  87                                 bool ok = false;
  88                                 int progress = regExp.cap(1).toInt(&ok);
  89                                 if(ok) emit statusUpdated(progress);
  90                         }
  91                         else if(!text.isEmpty())
  92                         {
  93                                 emit messageLogged(text);
  94                         }
  95                 }
  96         }
  97
  98         process.waitForFinished();
  99         if(process.state() != QProcess::NotRunning)
 100         {
 101                 process.kill();
 102                 process.waitForFinished(-1);
 103         }
 104
 105         emit statusUpdated(100);
 106         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 107
 108         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS || QFileInfo(outputFile).size() == 0)
 109         {
 110                 return false;
 111         }
 112
 113         return true;
 114 }
 115
 116 bool FLACDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 117 {
 118         if(containerType.compare("FLAC", Qt::CaseInsensitive) == 0 || containerType.compare("OGG", Qt::CaseInsensitive) == 0)
 119         {
 120                 if(formatType.compare("FLAC", Qt::CaseInsensitive) == 0)
 121                 {
 122                         return true;
 123                 }
 124         }
 125
 126         return false;
 127 }
 128
 129 QStringList FLACDecoder::supportedTypes(void)
 130 {
 131         return QStringList() << "Free Lossless Audio Codec (*.flac *.fla)";
 132 }