src/Decoder_Vorbis.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_Vorbis.h"
  23
  24 #include "Global.h"
  25
  26 #include <QDir>
  27 #include <QProcess>
  28 #include <QRegExp>
  29
  30 VorbisDecoder::VorbisDecoder(void)
  31 :
  32         m_binary(lamexp_lookup_tool("oggdec.exe"))
  33 {
  34         if(m_binary.isEmpty())
  35         {
  36                 throw "Error initializing Vorbis decoder. Tool 'oggdec.exe' is not registred!";
  37         }
  38 }
  39
  40 VorbisDecoder::~VorbisDecoder(void)
  41 {
  42 }
  43
  44 bool VorbisDecoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  45 {
  46         QProcess process;
  47         QStringList args;
  48
  49         args << "-w" << QDir::toNativeSeparators(outputFile);
  50         args << QDir::toNativeSeparators(sourceFile);
  51
  52         if(!startProcess(process, m_binary, args))
  53         {
  54                 return false;
  55         }
  56
  57         bool bTimeout = false;
  58         bool bAborted = false;
  59         int prevProgress = -1;
  60
  61         QRegExp regExp(" (\\d+)% decoded.");
  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("OggDec 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 && (progress > prevProgress))
  90                                 {
  91                                         emit statusUpdated(progress);
  92                                         prevProgress = qMin(progress + 2, 99);
  93                                 }
  94                         }
  95                         else if(!text.isEmpty())
  96                         {
  97                                 emit messageLogged(text);
  98                         }
  99                 }
 100         }
 101
 102         process.waitForFinished();
 103         if(process.state() != QProcess::NotRunning)
 104         {
 105                 process.kill();
 106                 process.waitForFinished(-1);
 107         }
 108
 109         emit statusUpdated(100);
 110         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 111
 112         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS || QFileInfo(outputFile).size() == 0)
 113         {
 114                 return false;
 115         }
 116
 117         return true;
 118 }
 119
 120 bool VorbisDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 121 {
 122         if(containerType.compare("OGG", Qt::CaseInsensitive) == 0)
 123         {
 124                 if(formatType.compare("Vorbis", Qt::CaseInsensitive) == 0)
 125                 {
 126                         return true;
 127                 }
 128         }
 129
 130         return false;
 131 }
 132
 133 QStringList VorbisDecoder::supportedTypes(void)
 134 {
 135         return QStringList() << "Ogg Vorbis (*.ogg *.ogm)";
 136 }