src/Decoder_FLAC.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_FLAC.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 FLACDecoder::FLACDecoder(void)
  37 :
  38         m_binary(lamexp_tools_lookup("flac.exe"))
  39 {
  40         if(m_binary.isEmpty())
  41         {
  42                 MUTILS_THROW("Error initializing FLAC decoder. Tool 'flac.exe' is not registred!");
  43         }
  44 }
  45
  46 FLACDecoder::~FLACDecoder(void)
  47 {
  48 }
  49
  50 bool FLACDecoder::decode(const QString &sourceFile, const QString &outputFile, QAtomicInt &abortFlag)
  51 {
  52         QProcess process;
  53         QStringList args;
  54
  55         args << "-d" << "-F" << "-f";
  56         args << "-o" << QDir::toNativeSeparators(outputFile);
  57         args << QDir::toNativeSeparators(sourceFile);
  58
  59         if(!startProcess(process, m_binary, args))
  60         {
  61                 return false;
  62         }
  63
  64         int prevProgress = -1;
  65         QRegExp regExp("\\b(\\d+)% complete");
  66
  67         const result_t result = awaitProcess(process, abortFlag, [this, &prevProgress, &regExp](const QString &text)
  68         {
  69                 if (regExp.lastIndexIn(text) >= 0)
  70                 {
  71                         qint32 newProgress;
  72                         if (MUtils::regexp_parse_int32(regExp, newProgress))
  73                         {
  74                                 if (newProgress > prevProgress)
  75                                 {
  76                                         emit statusUpdated(newProgress);
  77                                         prevProgress = NEXT_PROGRESS(newProgress);
  78                                 }
  79                         }
  80                         return true;
  81                 }
  82                 return false;
  83         });
  84
  85         return (result == RESULT_SUCCESS);
  86 }
  87
  88 bool FLACDecoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
  89 {
  90         static const QLatin1String flac("FLAC");
  91         if((containerType.compare(flac, Qt::CaseInsensitive) == 0) || (containerType.compare(QLatin1String("OGG"), Qt::CaseInsensitive) == 0))
  92         {
  93                 if(formatType.compare(flac, Qt::CaseInsensitive) == 0)
  94                 {
  95                         return true;
  96                 }
  97         }
  98
  99         return false;
 100 }
 101
 102 const AbstractDecoder::supportedType_t *FLACDecoder::supportedTypes(void)
 103 {
 104         static const char *exts[] =
 105         {
 106                 "fla", "flac", NULL
 107         };
 108
 109         static const supportedType_t s_supportedTypes[] =
 110         {
 111                 { "Free Lossless Audio Codec", exts },
 112                 { NULL, NULL }
 113         };
 114
 115         return s_supportedTypes;
 116 }