src/Decoder_Opus.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2018 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_Opus.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 static const quint32 OPUS_DEFAULT_SAMPLING_RATE = 48000;
  38
  39 bool OpusDecoder::m_disableResampling = false;
  40
  41 OpusDecoder::OpusDecoder(void)
  42 :
  43         m_binary(lamexp_tools_lookup("opusdec.exe"))
  44 {
  45         if(m_binary.isEmpty())
  46         {
  47                 MUTILS_THROW("Error initializing Opus decoder. Tool 'opusdec.exe' is not registred!");
  48         }
  49 }
  50
  51 OpusDecoder::~OpusDecoder(void)
  52 {
  53 }
  54
  55 bool OpusDecoder::decode(const QString &sourceFile, const QString &outputFile, QAtomicInt &abortFlag)
  56 {
  57         QProcess process;
  58         QStringList args;
  59
  60         if(m_disableResampling)
  61         {
  62                 args << "--rate" << QString().number(OPUS_DEFAULT_SAMPLING_RATE); /*force 48.000 Hz*/
  63         }
  64
  65         args << QDir::toNativeSeparators(sourceFile);
  66         args << QDir::toNativeSeparators(outputFile);
  67
  68         if(!startProcess(process, m_binary, args))
  69         {
  70                 return false;
  71         }
  72
  73         int prevProgress = -1;
  74         QRegExp regExp("\\((\\d+)\\.(\\d+)%\\)");
  75
  76         const result_t result = awaitProcess(process, abortFlag, [this, &prevProgress, &regExp](const QString &text)
  77         {
  78                 if (regExp.lastIndexIn(text) >= 0)
  79                 {
  80                         qint32 newProgress;
  81                         if (MUtils::regexp_parse_int32(regExp, newProgress))
  82                         {
  83                                 if (newProgress > prevProgress)
  84                                 {
  85                                         emit statusUpdated(newProgress);
  86                                         prevProgress = NEXT_PROGRESS(newProgress);
  87                                 }
  88                         }
  89                         return true;
  90                 }
  91                 return false;
  92         });
  93
  94         return (result == RESULT_SUCCESS);
  95 }
  96
  97 bool OpusDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
  98 {
  99         if(containerType.compare(QLatin1String("OGG"), Qt::CaseInsensitive) == 0)
 100         {
 101                 if(formatType.compare(QLatin1String("Opus"), Qt::CaseInsensitive) == 0)
 102                 {
 103                         {
 104                                 return true;
 105                         }
 106                 }
 107         }
 108
 109         return false;
 110 }
 111
 112 const AbstractDecoder::supportedType_t *OpusDecoder::supportedTypes(void)
 113 {
 114         static const char *exts[] =
 115         {
 116                 "opus", "ogg", NULL
 117         };
 118
 119         static const supportedType_t s_supportedTypes[] =
 120         {
 121                 { "Opus Audio Codec", exts },
 122                 { NULL, NULL }
 123         };
 124
 125         return s_supportedTypes;
 126 }