src/Decoder_AAC.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_AAC.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 <QMutexLocker>
  36
  37 //Static
  38 QMutex AACDecoder::m_regexMutex;
  39 MUtils::Lazy<QRegExp> AACDecoder::m_regxFeatures([]
  40 {
  41         return new QRegExp(L1S("\\bLC\\b"), Qt::CaseInsensitive);
  42 });
  43
  44 AACDecoder::AACDecoder(void)
  45 :
  46         m_binary(lamexp_tools_lookup("faad.exe"))
  47 {
  48         if(m_binary.isEmpty())
  49         {
  50                 MUTILS_THROW("Error initializing AAC decoder. Tool 'faad.exe' is not registred!");
  51         }
  52 }
  53
  54 AACDecoder::~AACDecoder(void)
  55 {
  56 }
  57
  58 bool AACDecoder::decode(const QString &sourceFile, const QString &outputFile, QAtomicInt &abortFlag)
  59 {
  60         QProcess process;
  61         QStringList args;
  62
  63         args << "-o" << QDir::toNativeSeparators(outputFile);
  64         args << QDir::toNativeSeparators(sourceFile);
  65
  66         if(!startProcess(process, m_binary, args))
  67         {
  68                 return false;
  69         }
  70
  71         int prevProgress = -1;
  72         QRegExp regExp("\\[(\\d+)%\\]\\s*decoding", Qt::CaseInsensitive); //regExp("\\b(\\d+)%\\s+decoding", Qt::CaseInsensitive);
  73
  74         const result_t result = awaitProcess(process, abortFlag, [this, &prevProgress, &regExp](const QString &text)
  75         {
  76                 if (regExp.lastIndexIn(text) >= 0)
  77                 {
  78                         qint32 newProgress;
  79                         if (MUtils::regexp_parse_int32(regExp, newProgress))
  80                         {
  81                                 if (newProgress > prevProgress)
  82                                 {
  83                                         emit statusUpdated(newProgress);
  84                                         prevProgress = NEXT_PROGRESS(newProgress);
  85                                 }
  86                         }
  87                         return true;
  88                 }
  89                 return false;
  90         });
  91
  92         return (result == RESULT_SUCCESS);
  93 }
  94
  95 bool AACDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
  96 {
  97         if((containerType.compare(QLatin1String("ADTS"), Qt::CaseInsensitive) == 0) || (containerType.compare(QLatin1String("MPEG-4"), Qt::CaseInsensitive) == 0))
  98         {
  99                 if(formatType.compare(QLatin1String("AAC"), Qt::CaseInsensitive) == 0)
 100                 {
 101                         QMutexLocker lock(&m_regexMutex);
 102                         if (m_regxFeatures->indexIn(formatProfile) >= 0)
 103                         {
 104                                 if((formatVersion.compare(QLatin1String("2"), Qt::CaseInsensitive) == 0) || (formatVersion.compare(QLatin1String("4"), Qt::CaseInsensitive) == 0) || formatVersion.isEmpty())
 105                                 {
 106                                         return true;
 107                                 }
 108                         }
 109                 }
 110         }
 111
 112         return false;
 113 }
 114
 115 const AbstractDecoder::supportedType_t *AACDecoder::supportedTypes(void)
 116 {
 117         static const char *exts[] =
 118         {
 119                 "mp4", "m4a", "aac", NULL
 120         };
 121
 122         static const supportedType_t s_supportedTypes[] =
 123         {
 124                 { "Advanced Audio Coding", exts },
 125                 { NULL, NULL }
 126         };
 127
 128         return s_supportedTypes;
 129 }