src/Decoder_MP3.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2017 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 #include <QMutexLocker>
  37
  38 //Static
  39 QScopedPointer<QRegExp> MP3Decoder::m_regxLayer, MP3Decoder::m_regxVersion;
  40 QMutex MP3Decoder::m_regexMutex;
  41
  42 MP3Decoder::MP3Decoder(void)
  43 :
  44         m_binary(lamexp_tools_lookup("mpg123.exe"))
  45 {
  46         if(m_binary.isEmpty())
  47         {
  48                 MUTILS_THROW("Error initializing MPG123 decoder. Tool 'mpg123.exe' is not registred!");
  49         }
  50 }
  51
  52 MP3Decoder::~MP3Decoder(void)
  53 {
  54 }
  55
  56 bool MP3Decoder::decode(const QString &sourceFile, const QString &outputFile, QAtomicInt &abortFlag)
  57 {
  58         QProcess process;
  59         QStringList args;
  60
  61         args << "-v" << "--utf8" << "-w" << QDir::toNativeSeparators(outputFile);
  62         args << QDir::toNativeSeparators(sourceFile);
  63
  64         if(!startProcess(process, m_binary, args))
  65         {
  66                 return false;
  67         }
  68
  69         bool bTimeout = false;
  70         bool bAborted = false;
  71         int prevProgress = -1;
  72
  73         //QRegExp regExp("\\b\\d+\\+\\d+\\s+(\\d+):(\\d+)\\.(\\d+)\\+(\\d+):(\\d+)\\.(\\d+)\\b");
  74         QRegExp regExp("[_=>]\\s+(\\d+)\\+(\\d+)\\s+");
  75
  76         while(process.state() != QProcess::NotRunning)
  77         {
  78                 if(checkFlag(abortFlag))
  79                 {
  80                         process.kill();
  81                         bAborted = true;
  82                         emit messageLogged("\nABORTED BY USER !!!");
  83                         break;
  84                 }
  85                 process.waitForReadyRead(m_processTimeoutInterval);
  86                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
  87                 {
  88                         process.kill();
  89                         qWarning("mpg123 process timed out <-- killing!");
  90                         emit messageLogged("\nPROCESS TIMEOUT !!!");
  91                         bTimeout = true;
  92                         break;
  93                 }
  94                 while(process.bytesAvailable() > 0)
  95                 {
  96                         QByteArray line = process.readLine();
  97                         QString text = QString::fromUtf8(line.constData()).simplified();
  98                         if(regExp.lastIndexIn(text) >= 0)
  99                         {
 100                                 quint32 values[2];
 101                                 if (MUtils::regexp_parse_uint32(regExp, values, 2))
 102                                 {
 103                                         const quint32 total = values[0] + values[1];
 104                                         if ((total >= 512U) && (values[0] >= 256U))
 105                                         {
 106                                                 const int newProgress = qRound((static_cast<double>(values[0]) / static_cast<double>(total)) * 100.0);
 107                                                 if (newProgress > prevProgress)
 108                                                 {
 109                                                         emit statusUpdated(newProgress);
 110                                                         prevProgress = qMin(newProgress + 2, 99);
 111                                                 }
 112                                         }
 113                                 }
 114                         }
 115                         else if(!text.isEmpty())
 116                         {
 117                                 emit messageLogged(text);
 118                         }
 119                 }
 120         }
 121
 122         process.waitForFinished();
 123         if(process.state() != QProcess::NotRunning)
 124         {
 125                 process.kill();
 126                 process.waitForFinished(-1);
 127         }
 128
 129         emit statusUpdated(100);
 130         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 131
 132         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS)
 133         {
 134                 return false;
 135         }
 136
 137         return true;
 138 }
 139
 140 bool MP3Decoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 141 {
 142         static const QLatin1String mpegAudio("MPEG Audio"), waveAudio("Wave");
 143         if((containerType.compare(mpegAudio, Qt::CaseInsensitive) == 0) || (containerType.compare(waveAudio, Qt::CaseInsensitive) == 0))
 144         {
 145                 if(formatType.compare(mpegAudio, Qt::CaseInsensitive) == 0)
 146                 {
 147                         QMutexLocker lock(&m_regexMutex);
 148                         if (m_regxLayer.isNull())
 149                         {
 150                                 m_regxLayer.reset(new QRegExp(L1S("^Layer\\s+(1|2|3)\\b"), Qt::CaseInsensitive));
 151                         }
 152                         if (m_regxLayer->indexIn(formatProfile) >= 0)
 153                         {
 154                                 if (m_regxVersion.isNull())
 155                                 {
 156                                         m_regxVersion.reset(new QRegExp(L1S("^(Version\\s+)?(1|2|2\\.5)\\b"), Qt::CaseInsensitive));
 157                                 }
 158                                 return (m_regxVersion->indexIn(formatVersion) >= 0);
 159                         }
 160                 }
 161         }
 162
 163         return false;
 164 }
 165
 166 const AbstractDecoder::supportedType_t *MP3Decoder::supportedTypes(void)
 167 {
 168         static const char *exts[][3] =
 169         {
 170                 { "mp3", "mpa", NULL },
 171                 { "mp2", "mpa", NULL },
 172                 { "mp1", "mpa", NULL }
 173         };
 174
 175         static const supportedType_t s_supportedTypes[] =
 176         {
 177                 { "MPEG Audio Layer III", exts[0] },
 178                 { "MPEG Audio Layer II",  exts[1] },
 179                 { "MPEG Audio Layer I",   exts[2] },
 180                 { NULL, NULL }
 181         };
 182
 183         return s_supportedTypes;
 184 }