src/Encoder_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 "Encoder_MP3.h"
  24
  25 #include "Global.h"
  26 #include "Model_Settings.h"
  27
  28 #include <QProcess>
  29 #include <QDir>
  30 #include <limits.h>
  31
  32 static const int g_lameAgorithmQualityLUT[5] = {7, 5, 2, 0, INT_MAX};
  33 static const int g_mp3BitrateLUT[15] = {32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, -1};
  34 static const int g_lameVBRQualityLUT[11] = {9, 8, 7, 6, 5, 4, 3, 2, 1, 0, INT_MAX};
  35
  36 //Static
  37 QScopedPointer<QRegExp> MP3Encoder::m_regxLayer, MP3Encoder::m_regxVersion;
  38 QMutex MP3Encoder::m_regexMutex;
  39
  40 ///////////////////////////////////////////////////////////////////////////////
  41 // Encoder Info
  42 ///////////////////////////////////////////////////////////////////////////////
  43
  44 class MP3EncoderInfo : public AbstractEncoderInfo
  45 {
  46         virtual bool isModeSupported(int mode) const
  47         {
  48                 switch(mode)
  49                 {
  50                 case SettingsModel::VBRMode:
  51                 case SettingsModel::ABRMode:
  52                 case SettingsModel::CBRMode:
  53                         return true;
  54                         break;
  55                 default:
  56                         MUTILS_THROW("Bad RC mode specified!");
  57                 }
  58         }
  59
  60         virtual int valueCount(int mode) const
  61         {
  62                 switch(mode)
  63                 {
  64                 case SettingsModel::VBRMode:
  65                         return 10;
  66                         break;
  67                 case SettingsModel::ABRMode:
  68                 case SettingsModel::CBRMode:
  69                         return 14;
  70                         break;
  71                 default:
  72                         MUTILS_THROW("Bad RC mode specified!");
  73                 }
  74         }
  75
  76         virtual int valueAt(int mode, int index) const
  77         {
  78                 switch(mode)
  79                 {
  80                 case SettingsModel::VBRMode:
  81                         return g_lameVBRQualityLUT[qBound(0, index, 9)];
  82                         break;
  83                 case SettingsModel::ABRMode:
  84                 case SettingsModel::CBRMode:
  85                         return g_mp3BitrateLUT[qBound(0, index, 13)];
  86                         break;
  87                 default:
  88                         MUTILS_THROW("Bad RC mode specified!");
  89                 }
  90         }
  91
  92         virtual int valueType(int mode) const
  93         {
  94                 switch(mode)
  95                 {
  96                 case SettingsModel::VBRMode:
  97                         return TYPE_QUALITY_LEVEL_INT;
  98                         break;
  99                 case SettingsModel::ABRMode:
 100                         return TYPE_APPROX_BITRATE;
 101                         break;
 102                 case SettingsModel::CBRMode:
 103                         return TYPE_BITRATE;
 104                         break;
 105                 default:
 106                         MUTILS_THROW("Bad RC mode specified!");
 107                 }
 108         }
 109
 110         virtual const char *description(void) const
 111         {
 112                 static const char* s_description = "LAME MP3 Encoder";
 113                 return s_description;
 114         }
 115
 116         virtual const char *extension(void) const
 117         {
 118                 static const char* s_extension = "mp3";
 119                 return s_extension;
 120         }
 121
 122         virtual bool isResamplingSupported(void) const
 123         {
 124                 return true;
 125         }
 126 }
 127 static const g_mp3EncoderInfo;
 128
 129 ///////////////////////////////////////////////////////////////////////////////
 130 // Encoder implementation
 131 ///////////////////////////////////////////////////////////////////////////////
 132
 133 MP3Encoder::MP3Encoder(void)
 134 :
 135         m_binary(lamexp_tools_lookup(L1S("lame.exe")))
 136 {
 137         if(m_binary.isEmpty())
 138         {
 139                 MUTILS_THROW("Error initializing MP3 encoder. Tool 'lame.exe' is not registred!");
 140         }
 141
 142         m_algorithmQuality = 2;
 143         m_configBitrateMaximum = 0;
 144         m_configBitrateMinimum = 0;
 145         m_configSamplingRate = 0;
 146         m_configChannelMode = 0;
 147 }
 148
 149 MP3Encoder::~MP3Encoder(void)
 150 {
 151 }
 152
 153 bool MP3Encoder::encode(const QString &sourceFile, const AudioFileModel_MetaInfo &metaInfo, const unsigned int duration, const unsigned int channels, const QString &outputFile, QAtomicInt &abortFlag)
 154 {
 155         QProcess process;
 156         QStringList args;
 157
 158         args << L1S("--nohist");
 159         args << L1S("-q") << QString::number(g_lameAgorithmQualityLUT[m_algorithmQuality]);
 160
 161         switch(m_configRCMode)
 162         {
 163         case SettingsModel::VBRMode:
 164                 args << L1S("-V") << QString::number(g_lameVBRQualityLUT[qBound(0, m_configBitrate, 9)]);
 165                 break;
 166         case SettingsModel::ABRMode:
 167                 args << L1S("--abr") << QString::number(g_mp3BitrateLUT[qBound(0, m_configBitrate, 13)]);
 168                 break;
 169         case SettingsModel::CBRMode:
 170                 args << L1S("--cbr");
 171                 args << L1S("-b") << QString::number(g_mp3BitrateLUT[qBound(0, m_configBitrate, 13)]);
 172                 break;
 173         default:
 174                 MUTILS_THROW("Bad rate-control mode!");
 175                 break;
 176         }
 177
 178         if((m_configBitrateMaximum > 0) && (m_configBitrateMinimum > 0) && (m_configBitrateMinimum <= m_configBitrateMaximum))
 179         {
 180                 if(m_configRCMode != SettingsModel::CBRMode)
 181                 {
 182                         args << L1S("-b") << QString::number(clipBitrate(m_configBitrateMinimum));
 183                         args << L1S("-B") << QString::number(clipBitrate(m_configBitrateMaximum));
 184                 }
 185         }
 186
 187         if(m_configSamplingRate > 0)
 188         {
 189                 args << L1S("--resample") << QString::number(m_configSamplingRate);
 190         }
 191
 192         switch(m_configChannelMode)
 193         {
 194         case 1:
 195                 args << L1S("-m") << L1S("j");
 196                 break;
 197         case 2:
 198                 args << L1S("-m") << L1S("f");
 199                 break;
 200         case 3:
 201                 args << L1S("-m") << L1S("s");
 202                 break;
 203         case 4:
 204                 args << L1S("-m") << L1S("d");
 205                 break;
 206         case 5:
 207                 args << L1S("-m") << L1S("m");
 208                 break;
 209         }
 210
 211         bool bUseUCS2 = false;
 212
 213         if(isUnicode(metaInfo.title()))   bUseUCS2 = true;
 214         if(isUnicode(metaInfo.artist()))  bUseUCS2 = true;
 215         if(isUnicode(metaInfo.album()))   bUseUCS2 = true;
 216         if(isUnicode(metaInfo.genre()))   bUseUCS2 = true;
 217         if(isUnicode(metaInfo.comment())) bUseUCS2 = true;
 218
 219         if (bUseUCS2) args << L1S("--id3v2-ucs2"); //Must specify this BEFORE "--tt" and friends!
 220
 221         if(!metaInfo.title().isEmpty())   args << L1S("--tt") << cleanTag(metaInfo.title());
 222         if(!metaInfo.artist().isEmpty())  args << L1S("--ta") << cleanTag(metaInfo.artist());
 223         if(!metaInfo.album().isEmpty())   args << L1S("--tl") << cleanTag( metaInfo.album());
 224         if(!metaInfo.genre().isEmpty())   args << L1S("--tg") << cleanTag(metaInfo.genre());
 225         if(!metaInfo.comment().isEmpty()) args << L1S("--tc") << cleanTag(metaInfo.comment());
 226         if(metaInfo.year())               args << L1S("--ty") << QString::number(metaInfo.year());
 227         if(metaInfo.position())           args << L1S("--tn") << QString::number(metaInfo.position());
 228         if(!metaInfo.cover().isEmpty())   args << L1S("--ti") << QDir::toNativeSeparators(metaInfo.cover());
 229
 230         if(!m_configCustomParams.isEmpty()) args << m_configCustomParams.split(" ", QString::SkipEmptyParts);
 231
 232         args << QDir::toNativeSeparators(sourceFile);
 233         args << QDir::toNativeSeparators(outputFile);
 234
 235         if(!startProcess(process, m_binary, args))
 236         {
 237                 return false;
 238         }
 239
 240         bool bTimeout = false;
 241         bool bAborted = false;
 242         int prevProgress = -1;
 243
 244         QRegExp regExp(L1S("\\(.*(\\d+)%\\)\\|"));
 245
 246         while(process.state() != QProcess::NotRunning)
 247         {
 248                 if (checkFlag(abortFlag))
 249                 {
 250                         process.kill();
 251                         bAborted = true;
 252                         emit messageLogged(L1S("\nABORTED BY USER !!!"));
 253                         break;
 254                 }
 255                 process.waitForReadyRead(m_processTimeoutInterval);
 256                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
 257                 {
 258                         process.kill();
 259                         qWarning("LAME process timed out <-- killing!");
 260                         emit messageLogged(L1S("\nPROCESS TIMEOUT !!!"));
 261                         bTimeout = true;
 262                         break;
 263                 }
 264                 while(process.bytesAvailable() > 0)
 265                 {
 266                         QByteArray line = process.readLine();
 267                         QString text = QString::fromUtf8(line.constData()).simplified();
 268                         if(regExp.lastIndexIn(text) >= 0)
 269                         {
 270                                 bool ok = false;
 271                                 int progress = regExp.cap(1).toInt(&ok);
 272                                 if(ok && (progress > prevProgress))
 273                                 {
 274                                         emit statusUpdated(progress);
 275                                         prevProgress = qMin(progress + 2, 99);
 276                                 }
 277                         }
 278                         else if(!text.isEmpty())
 279                         {
 280                                 emit messageLogged(text);
 281                         }
 282                 }
 283         }
 284
 285         process.waitForFinished();
 286         if(process.state() != QProcess::NotRunning)
 287         {
 288                 process.kill();
 289                 process.waitForFinished(-1);
 290         }
 291
 292         emit statusUpdated(100);
 293         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 294
 295         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS)
 296         {
 297                 return false;
 298         }
 299
 300         return true;
 301 }
 302
 303 bool MP3Encoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 304 {
 305         if(containerType.compare(L1S("Wave"), Qt::CaseInsensitive) == 0)
 306         {
 307                 if(formatType.compare(L1S("PCM"), Qt::CaseInsensitive) == 0)
 308                 {
 309                         return true;
 310                 }
 311         }
 312
 313         static const QLatin1String mpegAudio("MPEG Audio"), waveAudio("Wave"), pcmFormat("PCM");
 314         if ((containerType.compare(mpegAudio, Qt::CaseInsensitive) == 0) || (containerType.compare(waveAudio, Qt::CaseInsensitive) == 0))
 315         {
 316                 if (formatType.compare(pcmFormat, Qt::CaseInsensitive) == 0)
 317                 {
 318                         return true;
 319                 }
 320                 else if (formatType.compare(mpegAudio, Qt::CaseInsensitive) == 0)
 321                 {
 322                         QMutexLocker lock(&m_regexMutex);
 323                         if (m_regxLayer.isNull())
 324                         {
 325                                 m_regxLayer.reset(new QRegExp(L1S("^Layer\\s+(1|2|3)\\b"), Qt::CaseInsensitive));
 326                         }
 327                         if (m_regxLayer->indexIn(formatProfile) >= 0)
 328                         {
 329                                 if (m_regxVersion.isNull())
 330                                 {
 331                                         m_regxVersion.reset(new QRegExp(L1S("^(Version\\s+)?(1|2|2\\.5)\\b"), Qt::CaseInsensitive));
 332                                 }
 333                                 return (m_regxVersion->indexIn(formatVersion) >= 0);
 334                         }
 335                 }
 336         }
 337
 338         return false;
 339 }
 340
 341 const unsigned int *MP3Encoder::supportedChannelCount(void)
 342 {
 343         static const unsigned int supportedChannels[] = {1, 2, NULL};
 344         return supportedChannels;
 345 }
 346
 347 void MP3Encoder::setAlgoQuality(int value)
 348 {
 349         m_algorithmQuality = qBound(0, value, 3);
 350 }
 351
 352 void MP3Encoder::setBitrateLimits(int minimumBitrate, int maximumBitrate)
 353 {
 354         m_configBitrateMinimum = minimumBitrate;
 355         m_configBitrateMaximum = maximumBitrate;
 356 }
 357
 358 void MP3Encoder::setChannelMode(int value)
 359 {
 360         m_configChannelMode = value;
 361 }
 362
 363 int MP3Encoder::clipBitrate(int bitrate)
 364 {
 365         int targetBitrate = qMin(qMax(bitrate, 32), 320);
 366
 367         int minDiff = INT_MAX;
 368         int minIndx = -1;
 369
 370         for(int i = 0; g_mp3BitrateLUT[i] > 0; i++)
 371         {
 372                 int currentDiff = abs(targetBitrate - g_mp3BitrateLUT[i]);
 373                 if(currentDiff < minDiff)
 374                 {
 375                         minDiff = currentDiff;
 376                         minIndx = i;
 377                 }
 378         }
 379
 380         if(minIndx >= 0)
 381         {
 382                 return g_mp3BitrateLUT[minIndx];
 383         }
 384
 385         return targetBitrate;
 386 }
 387
 388 const AbstractEncoderInfo *MP3Encoder::getEncoderInfo(void)
 389 {
 390         return &g_mp3EncoderInfo;
 391 }