src/Decoder_AC3.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2023 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; always including the non-optional
   9 // LAMEXP GNU GENERAL PUBLIC LICENSE ADDENDUM. See "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_AC3.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
  36 AC3Decoder::AC3Decoder(void)
  37 :
  38         m_binary(lamexp_tools_lookup("valdec.exe"))
  39 {
  40         if(m_binary.isEmpty())
  41         {
  42                 MUTILS_THROW("Error initializing Valib decoder. Tool 'valdec.exe' is not registred!");
  43         }
  44 }
  45
  46 AC3Decoder::~AC3Decoder(void)
  47 {
  48 }
  49
  50 bool AC3Decoder::decode(const QString &sourceFile, const QString &outputFile, QAtomicInt &abortFlag)
  51 {
  52         QProcess process;
  53         QStringList args;
  54
  55         args << QDir::toNativeSeparators(sourceFile);
  56         args << "-w" << QDir::toNativeSeparators(outputFile);
  57
  58         if(!startProcess(process, m_binary, args))
  59         {
  60                 return false;
  61         }
  62
  63         int prevProgress = -1;
  64         QRegExp regExp("\\b\\s*(\\d+)\\.(\\d+)?%(\\s+)Frames", Qt::CaseInsensitive);
  65
  66         const result_t result = awaitProcess(process, abortFlag, [this, &prevProgress, &regExp](const QString &text)
  67         {
  68                 if (regExp.lastIndexIn(text) >= 0)
  69                 {
  70                         qint32 newProgress;
  71                         if (MUtils::regexp_parse_int32(regExp, newProgress))
  72                         {
  73                                 if (newProgress > prevProgress)
  74                                 {
  75                                         emit statusUpdated(newProgress);
  76                                         prevProgress = NEXT_PROGRESS(newProgress);
  77                                 }
  78                         }
  79                         return true;
  80                 }
  81                 return false;
  82         });
  83
  84         return (result == RESULT_SUCCESS);
  85 }
  86
  87 bool AC3Decoder::isFormatSupported(const QString &containerType, const QString& /*containerProfile*/, const QString &formatType, const QString& /*formatProfile*/, const QString& /*formatVersion*/)
  88 {
  89         static const QLatin1String ac3("AC-3"), eac3("E-AC-3"), dts("DTS");
  90         if(containerType.compare(ac3, Qt::CaseInsensitive) == 0)
  91         {
  92                 if(formatType.compare(ac3, Qt::CaseInsensitive) == 0)
  93                 {
  94                         return true;
  95                 }
  96         }
  97         if(containerType.compare(eac3, Qt::CaseInsensitive) == 0)
  98         {
  99                 if(formatType.compare(eac3, Qt::CaseInsensitive) == 0)
 100                 {
 101                         return true;
 102                 }
 103         }
 104
 105         else if(containerType.compare(dts, Qt::CaseInsensitive) == 0)
 106         {
 107                 if(formatType.compare(dts, Qt::CaseInsensitive) == 0)
 108                 {
 109                         return true;
 110                 }
 111         }
 112         else if(containerType.compare(QLatin1String("Wave"), Qt::CaseInsensitive) == 0)
 113         {
 114                 if((formatType.compare(ac3, Qt::CaseInsensitive) == 0) || (formatType.compare(eac3, Qt::CaseInsensitive) == 0) || (formatType.compare(dts, Qt::CaseInsensitive) == 0))
 115                 {
 116                         return true;
 117                 }
 118         }
 119
 120         return false;
 121 }
 122
 123 const AbstractDecoder::supportedType_t *AC3Decoder::supportedTypes(void)
 124 {
 125         static const char *exts[][4] =
 126         {
 127                 { "ac3", "eac3", "wav", NULL },
 128                 { "dts", "wav",         NULL }
 129         };
 130
 131         static const supportedType_t s_supportedTypes[] =
 132         {
 133                 { "AC-3 / ATSC A/52",       exts[0] },
 134                 { "Digital Theater System", exts[1] },
 135                 { NULL, NULL }
 136         };
 137
 138         return s_supportedTypes;
 139 }