src/Decoder_ALAC.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_ALAC.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 #include <QUuid>
  36
  37 ALACDecoder::ALACDecoder(void)
  38 :
  39         m_binary(lamexp_tools_lookup("refalac.exe"))
  40 {
  41         if(m_binary.isEmpty())
  42         {
  43                 MUTILS_THROW("Error initializing ALAC decoder. Tool 'refalac.exe' is not registred!");
  44         }
  45 }
  46
  47 ALACDecoder::~ALACDecoder(void)
  48 {
  49 }
  50
  51 bool ALACDecoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  52 {
  53         QProcess process;
  54         QStringList args;
  55
  56         args << "--decode";
  57         args << "-o" << QDir::toNativeSeparators(outputFile);
  58         args << QDir::toNativeSeparators(sourceFile);
  59
  60         if(!startProcess(process, m_binary, args))
  61         {
  62                 return false;
  63         }
  64
  65         bool bTimeout = false;
  66         bool bAborted = false;
  67         int prevProgress = -1;
  68
  69         //The ALAC Decoder doesn't actually send any status updates :-[
  70         //emit statusUpdated(20 + (QUuid::createUuid().data1 % 60));
  71         QRegExp regExp("\\[(\\d+)\\.(\\d)%\\]");
  72
  73         while(process.state() != QProcess::NotRunning)
  74         {
  75                 if(*abortFlag)
  76                 {
  77                         process.kill();
  78                         bAborted = true;
  79                         emit messageLogged("\nABORTED BY USER !!!");
  80                         break;
  81                 }
  82                 process.waitForReadyRead(m_processTimeoutInterval);
  83                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  84                 {
  85                         process.kill();
  86                         qWarning("ALAC process timed out <-- killing!");
  87                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  88                         bTimeout = true;
  89                         break;
  90                 }
  91                 while(process.bytesAvailable() > 0)
  92                 {
  93                         QByteArray line = process.readLine();
  94                         QString text = QString::fromUtf8(line.constData()).simplified();
  95                         if(regExp.lastIndexIn(text) >= 0)
  96                         {
  97                                 bool ok[2] = {false, false};
  98                                 int intVal[2] = {0, 0};
  99                                 intVal[0] = regExp.cap(1).toInt(&ok[0]);
 100                                 intVal[1] = regExp.cap(2).toInt(&ok[1]);
 101                                 if(ok[0] && ok[1])
 102                                 {
 103                                         int progress = qRound(static_cast<double>(intVal[0]) + (static_cast<double>(intVal[1]) / 10.0));
 104                                         if(progress > prevProgress)
 105                                         {
 106                                                 emit statusUpdated(progress);
 107                                                 prevProgress = qMin(progress + 2, 99);
 108                                         }
 109                                 }
 110                         }
 111                         else if(!text.isEmpty())
 112                         {
 113                                 emit messageLogged(text);
 114                         }
 115                 }
 116         }
 117
 118         process.waitForFinished();
 119         if(process.state() != QProcess::NotRunning)
 120         {
 121                 process.kill();
 122                 process.waitForFinished(-1);
 123         }
 124
 125         emit statusUpdated(100);
 126         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 127
 128         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS || QFileInfo(outputFile).size() == 0)
 129         {
 130                 return false;
 131         }
 132
 133         return true;
 134 }
 135
 136 bool ALACDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 137 {
 138         if(containerType.compare("MPEG-4", Qt::CaseInsensitive) == 0)
 139         {
 140                 if(formatType.compare("ALAC", Qt::CaseInsensitive) == 0)
 141                 {
 142                         return true;
 143                 }
 144         }
 145
 146         return false;
 147 }
 148
 149 const AbstractDecoder::supportedType_t *ALACDecoder::supportedTypes(void)
 150 {
 151         static const char *exts[] =
 152         {
 153                 "mp4", "m4a", NULL
 154         };
 155
 156         static const supportedType_t s_supportedTypes[] =
 157         {
 158                 { "Apple Lossless", exts },
 159                 { NULL, NULL }
 160         };
 161
 162         return s_supportedTypes;
 163 }