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