src/Decoder_ALAC.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2019 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, QAtomicInt &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         int prevProgress = -1;
  66         QRegExp regExp("\\[(\\d+)\\.(\\d)%\\]");
  67
  68         const result_t result = awaitProcess(process, abortFlag, [this, &prevProgress, &regExp](const QString &text)
  69         {
  70                 if (regExp.lastIndexIn(text) >= 0)
  71                 {
  72                         qint32 intVal[2];
  73                         if (MUtils::regexp_parse_int32(regExp, intVal, 2))
  74                         {
  75                                 const int newProgress = qRound(static_cast<double>(intVal[0]) + (static_cast<double>(intVal[1]) / 10.0));
  76                                 if (newProgress > prevProgress)
  77                                 {
  78                                         emit statusUpdated(newProgress);
  79                                         prevProgress = NEXT_PROGRESS(newProgress);
  80                                 }
  81                         }
  82                         return true;
  83                 }
  84                 return false;
  85         });
  86
  87         return (result == RESULT_SUCCESS);
  88 }
  89
  90 bool ALACDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
  91 {
  92         if(containerType.compare(QLatin1String("MPEG-4"), Qt::CaseInsensitive) == 0)
  93         {
  94                 if(formatType.compare(QLatin1String("ALAC"), Qt::CaseInsensitive) == 0)
  95                 {
  96                         return true;
  97                 }
  98         }
  99
 100         return false;
 101 }
 102
 103 const AbstractDecoder::supportedType_t *ALACDecoder::supportedTypes(void)
 104 {
 105         static const char *exts[] =
 106         {
 107                 "mp4", "m4a", NULL
 108         };
 109
 110         static const supportedType_t s_supportedTypes[] =
 111         {
 112                 { "Apple Lossless", exts },
 113                 { NULL, NULL }
 114         };
 115
 116         return s_supportedTypes;
 117 }