src/Decoder_MP3.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2016 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_MP3.h"
  24
  25 //Internal
  26 #include "Global.h"
  27
  28 //MUtils
  29 #include <MUtils/Global.h>
  30 #include <MUtils/Exception.h>
  31
  32 //Qt
  33 #include <QDir>
  34 #include <QProcess>
  35 #include <QRegExp>
  36
  37 MP3Decoder::MP3Decoder(void)
  38 :
  39         m_binary(lamexp_tools_lookup("mpg123.exe"))
  40 {
  41         if(m_binary.isEmpty())
  42         {
  43                 MUTILS_THROW("Error initializing MPG123 decoder. Tool 'mpg123.exe' is not registred!");
  44         }
  45 }
  46
  47 MP3Decoder::~MP3Decoder(void)
  48 {
  49 }
  50
  51 bool MP3Decoder::decode(const QString &sourceFile, const QString &outputFile, volatile bool *abortFlag)
  52 {
  53         QProcess process;
  54         QStringList args;
  55
  56         args << "-v" << "--utf8" << "-w" << QDir::toNativeSeparators(outputFile);
  57         args << QDir::toNativeSeparators(sourceFile);
  58
  59         if(!startProcess(process, m_binary, args))
  60         {
  61                 return false;
  62         }
  63
  64         bool bTimeout = false;
  65         bool bAborted = false;
  66         int prevProgress = -1;
  67
  68         QRegExp regExp("\\b\\d+\\+\\d+\\s+(\\d+):(\\d+)\\.(\\d+)\\+(\\d+):(\\d+)\\.(\\d+)\\b");
  69
  70         while(process.state() != QProcess::NotRunning)
  71         {
  72                 if(*abortFlag)
  73                 {
  74                         process.kill();
  75                         bAborted = true;
  76                         emit messageLogged("\nABORTED BY USER !!!");
  77                         break;
  78                 }
  79                 process.waitForReadyRead(m_processTimeoutInterval);
  80                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  81                 {
  82                         process.kill();
  83                         qWarning("mpg123 process timed out <-- killing!");
  84                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  85                         bTimeout = true;
  86                         break;
  87                 }
  88                 while(process.bytesAvailable() > 0)
  89                 {
  90                         QByteArray line = process.readLine();
  91                         QString text = QString::fromUtf8(line.constData()).simplified();
  92                         if(regExp.lastIndexIn(text) >= 0)
  93                         {
  94                                 quint32 values[6];
  95                                 if (MUtils::regexp_parse_uint32(regExp, values, 6))
  96                                 {
  97                                         const double timeDone = (60.0 * double(values[0])) + double(values[1]) + (double(values[2]) / 100.0);
  98                                         const double timeLeft = (60.0 * double(values[3])) + double(values[4]) + (double(values[5]) / 100.0);
  99                                         if ((timeDone >= 0.005) || (timeLeft >= 0.005))
 100                                         {
 101                                                 const int newProgress = qRound((static_cast<double>(timeDone) / static_cast<double>(timeDone + timeLeft)) * 100.0);
 102                                                 if (newProgress > prevProgress)
 103                                                 {
 104                                                         emit statusUpdated(newProgress);
 105                                                         prevProgress = qMin(newProgress + 2, 99);
 106                                                 }
 107                                         }
 108                                 }
 109                         }
 110                         else if(!text.isEmpty())
 111                         {
 112                                 emit messageLogged(text);
 113                         }
 114                 }
 115         }
 116
 117         process.waitForFinished();
 118         if(process.state() != QProcess::NotRunning)
 119         {
 120                 process.kill();
 121                 process.waitForFinished(-1);
 122         }
 123
 124         emit statusUpdated(100);
 125         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 126
 127         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS)
 128         {
 129                 return false;
 130         }
 131
 132         return true;
 133 }
 134
 135 bool MP3Decoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 136 {
 137         if(containerType.compare("MPEG Audio", Qt::CaseInsensitive) == 0 || containerType.compare("Wave", Qt::CaseInsensitive) == 0)
 138         {
 139                 if(formatType.compare("MPEG Audio", Qt::CaseInsensitive) == 0)
 140                 {
 141                         if(formatProfile.compare("Layer 3", Qt::CaseInsensitive) == 0 || formatProfile.compare("Layer 2", Qt::CaseInsensitive) == 0)
 142                         {
 143                                 if(formatVersion.compare("Version 1", Qt::CaseInsensitive) == 0 || formatVersion.compare("Version 2", Qt::CaseInsensitive) == 0)
 144                                 {
 145                                         return true;
 146                                 }
 147                         }
 148                 }
 149         }
 150
 151         return false;
 152 }
 153
 154 const AbstractDecoder::supportedType_t *MP3Decoder::supportedTypes(void)
 155 {
 156         static const char *exts[][3] =
 157         {
 158                 { "mp3", "mpa", NULL },
 159                 { "mp2", "mpa", NULL },
 160                 { "mp1", "mpa", NULL }
 161         };
 162
 163         static const supportedType_t s_supportedTypes[] =
 164         {
 165                 { "MPEG Audio Layer III", exts[0] },
 166                 { "MPEG Audio Layer II",  exts[1] },
 167                 { "MPEG Audio Layer I",   exts[2] },
 168                 { NULL, NULL }
 169         };
 170
 171         return s_supportedTypes;
 172 }