src/Decoder_ALAC.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_ALAC.h"
  23
  24 #include "Global.h"
  25
  26 #include <QDir>
  27 #include <QProcess>
  28 #include <QRegExp>
  29 #include <QUuid>
  30
  31 ALACDecoder::ALACDecoder(void)
  32 :
  33         m_binary(lamexp_lookup_tool("refalac.exe"))
  34 {
  35         if(m_binary.isEmpty())
  36         {
  37                 throw "Error initializing ALAC decoder. Tool 'refalac.exe' is not registred!";
  38         }
  39 }
  40
  41 ALACDecoder::~ALACDecoder(void)
  42 {
  43 }
  44
  45 bool ALACDecoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  46 {
  47         QProcess process;
  48         QStringList args;
  49
  50         args << "--decode";
  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         int prevProgress = -1;
  62
  63         //The ALAC Decoder doesn't actually send any status updates :-[
  64         //emit statusUpdated(20 + (QUuid::createUuid().data1 % 60));
  65         QRegExp regExp("\\[(\\d+)\\.(\\d)%\\]");
  66
  67         while(process.state() != QProcess::NotRunning)
  68         {
  69                 if(*abortFlag)
  70                 {
  71                         process.kill();
  72                         bAborted = true;
  73                         emit messageLogged("\nABORTED BY USER !!!");
  74                         break;
  75                 }
  76                 process.waitForReadyRead(m_processTimeoutInterval);
  77                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  78                 {
  79                         process.kill();
  80                         qWarning("ALAC process timed out <-- killing!");
  81                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  82                         bTimeout = true;
  83                         break;
  84                 }
  85                 while(process.bytesAvailable() > 0)
  86                 {
  87                         QByteArray line = process.readLine();
  88                         QString text = QString::fromUtf8(line.constData()).simplified();
  89                         if(regExp.lastIndexIn(text) >= 0)
  90                         {
  91                                 bool ok[2] = {false, false};
  92                                 int intVal[2] = {0, 0};
  93                                 intVal[0] = regExp.cap(1).toInt(&ok[0]);
  94                                 intVal[1] = regExp.cap(2).toInt(&ok[1]);
  95                                 if(ok[0] && ok[1])
  96                                 {
  97                                         int progress = qRound(static_cast<double>(intVal[0]) + (static_cast<double>(intVal[1]) / 10.0));
  98                                         if(progress > prevProgress)
  99                                         {
 100                                                 emit statusUpdated(progress);
 101                                                 prevProgress = qMin(progress + 2, 99);
 102                                         }
 103                                 }
 104                         }
 105                         else if(!text.isEmpty())
 106                         {
 107                                 emit messageLogged(text);
 108                         }
 109                 }
 110         }
 111
 112         process.waitForFinished();
 113         if(process.state() != QProcess::NotRunning)
 114         {
 115                 process.kill();
 116                 process.waitForFinished(-1);
 117         }
 118
 119         emit statusUpdated(100);
 120         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 121
 122         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS || QFileInfo(outputFile).size() == 0)
 123         {
 124                 return false;
 125         }
 126
 127         return true;
 128 }
 129
 130 bool ALACDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 131 {
 132         if(containerType.compare("MPEG-4", Qt::CaseInsensitive) == 0)
 133         {
 134                 if(formatType.compare("ALAC", Qt::CaseInsensitive) == 0)
 135                 {
 136                         return true;
 137                 }
 138         }
 139
 140         return false;
 141 }
 142
 143 QStringList ALACDecoder::supportedTypes(void)
 144 {
 145         return QStringList() << "Apple Lossless (*.mp4 *.m4a)";
 146 }