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         int prevProgress = -1;
 241         QRegExp regExp(L1S("\\(.*(\\d+)%\\)\\|"));
 242
 243         const result_t result = awaitProcess(process, abortFlag, [this, &prevProgress, &regExp](const QString &text)
 244         {
 245                 if (regExp.lastIndexIn(text) >= 0)
 246                 {
 247                         qint32 newProgress;
 248                         if (MUtils::regexp_parse_int32(regExp, newProgress))
 249                         {
 250                                 if (newProgress > prevProgress)
 251                                 {
 252                                         emit statusUpdated(newProgress);
 253                                         prevProgress = NEXT_PROGRESS(newProgress);
 254                                 }
 255                         }
 256                         return true;
 257                 }
 258                 return false;
 259         });
 260
 261         return (result == RESULT_SUCCESS);
 262 }
 263
 264 bool MP3Encoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 265 {
 266         if(containerType.compare(L1S("Wave"), Qt::CaseInsensitive) == 0)
 267         {
 268                 if(formatType.compare(L1S("PCM"), Qt::CaseInsensitive) == 0)
 269                 {
 270                         return true;
 271                 }
 272         }
 273
 274         static const QLatin1String mpegAudio("MPEG Audio"), waveAudio("Wave"), pcmFormat("PCM");
 275         if ((containerType.compare(mpegAudio, Qt::CaseInsensitive) == 0) || (containerType.compare(waveAudio, Qt::CaseInsensitive) == 0))
 276         {
 277                 if (formatType.compare(pcmFormat, Qt::CaseInsensitive) == 0)
 278                 {
 279                         return true;
 280                 }
 281                 else if (formatType.compare(mpegAudio, Qt::CaseInsensitive) == 0)
 282                 {
 283                         QMutexLocker lock(&m_regexMutex);
 284                         if (m_regxLayer.isNull())
 285                         {
 286                                 m_regxLayer.reset(new QRegExp(L1S("^Layer\\s+(1|2|3)\\b"), Qt::CaseInsensitive));
 287                         }
 288                         if (m_regxLayer->indexIn(formatProfile) >= 0)
 289                         {
 290                                 if (m_regxVersion.isNull())
 291                                 {
 292                                         m_regxVersion.reset(new QRegExp(L1S("^(Version\\s+)?(1|2|2\\.5)\\b"), Qt::CaseInsensitive));
 293                                 }
 294                                 return (m_regxVersion->indexIn(formatVersion) >= 0);
 295                         }
 296                 }
 297         }
 298
 299         return false;
 300 }
 301
 302 const unsigned int *MP3Encoder::supportedChannelCount(void)
 303 {
 304         static const unsigned int supportedChannels[] = {1, 2, NULL};
 305         return supportedChannels;
 306 }
 307
 308 void MP3Encoder::setAlgoQuality(int value)
 309 {
 310         m_algorithmQuality = qBound(0, value, 3);
 311 }
 312
 313 void MP3Encoder::setBitrateLimits(int minimumBitrate, int maximumBitrate)
 314 {
 315         m_configBitrateMinimum = minimumBitrate;
 316         m_configBitrateMaximum = maximumBitrate;
 317 }
 318
 319 void MP3Encoder::setChannelMode(int value)
 320 {
 321         m_configChannelMode = value;
 322 }
 323
 324 int MP3Encoder::clipBitrate(int bitrate)
 325 {
 326         int targetBitrate = qMin(qMax(bitrate, 32), 320);
 327
 328         int minDiff = INT_MAX;
 329         int minIndx = -1;
 330
 331         for(int i = 0; g_mp3BitrateLUT[i] > 0; i++)
 332         {
 333                 int currentDiff = abs(targetBitrate - g_mp3BitrateLUT[i]);
 334                 if(currentDiff < minDiff)
 335                 {
 336                         minDiff = currentDiff;
 337                         minIndx = i;
 338                 }
 339         }
 340
 341         if(minIndx >= 0)
 342         {
 343                 return g_mp3BitrateLUT[minIndx];
 344         }
 345
 346         return targetBitrate;
 347 }
 348
 349 const AbstractEncoderInfo *MP3Encoder::getEncoderInfo(void)
 350 {
 351         return &g_mp3EncoderInfo;
 352 }