src/Encoder_MP3.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2019 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 QMutex MP3Encoder::m_regexMutex;
  38 MUtils::Lazy<QRegExp> MP3Encoder::m_regxLayer([]
  39 {
  40         return new QRegExp(L1S("^Layer\\s+(1|2|3)\\b"), Qt::CaseInsensitive);
  41 });
  42 MUtils::Lazy<QRegExp> MP3Encoder::m_regxVersion([]
  43 {
  44         return new QRegExp(L1S("^(Version\\s+)?(1|2|2\\.5)\\b"), Qt::CaseInsensitive);
  45 });
  46
  47 ///////////////////////////////////////////////////////////////////////////////
  48 // Encoder Info
  49 ///////////////////////////////////////////////////////////////////////////////
  50
  51 class MP3EncoderInfo : public AbstractEncoderInfo
  52 {
  53         virtual bool isModeSupported(int mode) const
  54         {
  55                 switch(mode)
  56                 {
  57                 case SettingsModel::VBRMode:
  58                 case SettingsModel::ABRMode:
  59                 case SettingsModel::CBRMode:
  60                         return true;
  61                         break;
  62                 default:
  63                         MUTILS_THROW("Bad RC mode specified!");
  64                 }
  65         }
  66
  67         virtual int valueCount(int mode) const
  68         {
  69                 switch(mode)
  70                 {
  71                 case SettingsModel::VBRMode:
  72                         return 10;
  73                         break;
  74                 case SettingsModel::ABRMode:
  75                 case SettingsModel::CBRMode:
  76                         return 14;
  77                         break;
  78                 default:
  79                         MUTILS_THROW("Bad RC mode specified!");
  80                 }
  81         }
  82
  83         virtual int valueAt(int mode, int index) const
  84         {
  85                 switch(mode)
  86                 {
  87                 case SettingsModel::VBRMode:
  88                         return g_lameVBRQualityLUT[qBound(0, index, 9)];
  89                         break;
  90                 case SettingsModel::ABRMode:
  91                 case SettingsModel::CBRMode:
  92                         return g_mp3BitrateLUT[qBound(0, index, 13)];
  93                         break;
  94                 default:
  95                         MUTILS_THROW("Bad RC mode specified!");
  96                 }
  97         }
  98
  99         virtual int valueType(int mode) const
 100         {
 101                 switch(mode)
 102                 {
 103                 case SettingsModel::VBRMode:
 104                         return TYPE_QUALITY_LEVEL_INT;
 105                         break;
 106                 case SettingsModel::ABRMode:
 107                         return TYPE_APPROX_BITRATE;
 108                         break;
 109                 case SettingsModel::CBRMode:
 110                         return TYPE_BITRATE;
 111                         break;
 112                 default:
 113                         MUTILS_THROW("Bad RC mode specified!");
 114                 }
 115         }
 116
 117         virtual const char *description(void) const
 118         {
 119                 static const char* s_description = "LAME MP3 Encoder";
 120                 return s_description;
 121         }
 122
 123         virtual const char *extension(void) const
 124         {
 125                 static const char* s_extension = "mp3";
 126                 return s_extension;
 127         }
 128
 129         virtual bool isResamplingSupported(void) const
 130         {
 131                 return true;
 132         }
 133 }
 134 static const g_mp3EncoderInfo;
 135
 136 ///////////////////////////////////////////////////////////////////////////////
 137 // Encoder implementation
 138 ///////////////////////////////////////////////////////////////////////////////
 139
 140 MP3Encoder::MP3Encoder(void)
 141 :
 142         m_binary(lamexp_tools_lookup(L1S("lame.exe")))
 143 {
 144         if(m_binary.isEmpty())
 145         {
 146                 MUTILS_THROW("Error initializing MP3 encoder. Tool 'lame.exe' is not registred!");
 147         }
 148
 149         m_algorithmQuality = 2;
 150         m_configBitrateMaximum = 0;
 151         m_configBitrateMinimum = 0;
 152         m_configSamplingRate = 0;
 153         m_configChannelMode = 0;
 154 }
 155
 156 MP3Encoder::~MP3Encoder(void)
 157 {
 158 }
 159
 160 bool MP3Encoder::encode(const QString &sourceFile, const AudioFileModel_MetaInfo &metaInfo, const unsigned int duration, const unsigned int channels, const QString &outputFile, QAtomicInt &abortFlag)
 161 {
 162         QProcess process;
 163         QStringList args;
 164
 165         args << L1S("--nohist");
 166         args << L1S("-q") << QString::number(g_lameAgorithmQualityLUT[m_algorithmQuality]);
 167
 168         switch(m_configRCMode)
 169         {
 170         case SettingsModel::VBRMode:
 171                 args << L1S("-V") << QString::number(g_lameVBRQualityLUT[qBound(0, m_configBitrate, 9)]);
 172                 break;
 173         case SettingsModel::ABRMode:
 174                 args << L1S("--abr") << QString::number(g_mp3BitrateLUT[qBound(0, m_configBitrate, 13)]);
 175                 break;
 176         case SettingsModel::CBRMode:
 177                 args << L1S("--cbr");
 178                 args << L1S("-b") << QString::number(g_mp3BitrateLUT[qBound(0, m_configBitrate, 13)]);
 179                 break;
 180         default:
 181                 MUTILS_THROW("Bad rate-control mode!");
 182                 break;
 183         }
 184
 185         if((m_configBitrateMaximum > 0) && (m_configBitrateMinimum > 0) && (m_configBitrateMinimum <= m_configBitrateMaximum))
 186         {
 187                 if(m_configRCMode != SettingsModel::CBRMode)
 188                 {
 189                         args << L1S("-b") << QString::number(clipBitrate(m_configBitrateMinimum));
 190                         args << L1S("-B") << QString::number(clipBitrate(m_configBitrateMaximum));
 191                 }
 192         }
 193
 194         if(m_configSamplingRate > 0)
 195         {
 196                 args << L1S("--resample") << QString::number(m_configSamplingRate);
 197         }
 198
 199         switch(m_configChannelMode)
 200         {
 201         case 1:
 202                 args << L1S("-m") << L1S("j");
 203                 break;
 204         case 2:
 205                 args << L1S("-m") << L1S("f");
 206                 break;
 207         case 3:
 208                 args << L1S("-m") << L1S("s");
 209                 break;
 210         case 4:
 211                 args << L1S("-m") << L1S("d");
 212                 break;
 213         case 5:
 214                 args << L1S("-m") << L1S("m");
 215                 break;
 216         }
 217
 218         bool bUseUCS2 = false;
 219
 220         if(isUnicode(metaInfo.title()))   bUseUCS2 = true;
 221         if(isUnicode(metaInfo.artist()))  bUseUCS2 = true;
 222         if(isUnicode(metaInfo.album()))   bUseUCS2 = true;
 223         if(isUnicode(metaInfo.genre()))   bUseUCS2 = true;
 224         if(isUnicode(metaInfo.comment())) bUseUCS2 = true;
 225
 226         if (bUseUCS2) args << L1S("--id3v2-ucs2"); //Must specify this BEFORE "--tt" and friends!
 227
 228         if(!metaInfo.title().isEmpty())   args << L1S("--tt") << cleanTag(metaInfo.title());
 229         if(!metaInfo.artist().isEmpty())  args << L1S("--ta") << cleanTag(metaInfo.artist());
 230         if(!metaInfo.album().isEmpty())   args << L1S("--tl") << cleanTag( metaInfo.album());
 231         if(!metaInfo.genre().isEmpty())   args << L1S("--tg") << cleanTag(metaInfo.genre());
 232         if(!metaInfo.comment().isEmpty()) args << L1S("--tc") << cleanTag(metaInfo.comment());
 233         if(metaInfo.year())               args << L1S("--ty") << QString::number(metaInfo.year());
 234         if(metaInfo.position())           args << L1S("--tn") << QString::number(metaInfo.position());
 235         if(!metaInfo.cover().isEmpty())   args << L1S("--ti") << QDir::toNativeSeparators(metaInfo.cover());
 236
 237         if(!m_configCustomParams.isEmpty()) args << m_configCustomParams.split(" ", QString::SkipEmptyParts);
 238
 239         args << QDir::toNativeSeparators(sourceFile);
 240         args << QDir::toNativeSeparators(outputFile);
 241
 242         if(!startProcess(process, m_binary, args))
 243         {
 244                 return false;
 245         }
 246
 247         int prevProgress = -1;
 248         QRegExp regExp(L1S("\\(.*(\\d+)%\\)\\|"));
 249
 250         const result_t result = awaitProcess(process, abortFlag, [this, &prevProgress, &regExp](const QString &text)
 251         {
 252                 if (regExp.lastIndexIn(text) >= 0)
 253                 {
 254                         qint32 newProgress;
 255                         if (MUtils::regexp_parse_int32(regExp, newProgress))
 256                         {
 257                                 if (newProgress > prevProgress)
 258                                 {
 259                                         emit statusUpdated(newProgress);
 260                                         prevProgress = NEXT_PROGRESS(newProgress);
 261                                 }
 262                         }
 263                         return true;
 264                 }
 265                 return false;
 266         });
 267
 268         return (result == RESULT_SUCCESS);
 269 }
 270
 271 bool MP3Encoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 272 {
 273         if(containerType.compare(L1S("Wave"), Qt::CaseInsensitive) == 0)
 274         {
 275                 if(formatType.compare(L1S("PCM"), Qt::CaseInsensitive) == 0)
 276                 {
 277                         return true;
 278                 }
 279         }
 280
 281         static const QLatin1String mpegAudio("MPEG Audio"), waveAudio("Wave"), pcmFormat("PCM");
 282         if ((containerType.compare(mpegAudio, Qt::CaseInsensitive) == 0) || (containerType.compare(waveAudio, Qt::CaseInsensitive) == 0))
 283         {
 284                 if (formatType.compare(pcmFormat, Qt::CaseInsensitive) == 0)
 285                 {
 286                         return true;
 287                 }
 288                 else if (formatType.compare(mpegAudio, Qt::CaseInsensitive) == 0)
 289                 {
 290                         QMutexLocker lock(&m_regexMutex);
 291                         if (m_regxLayer->indexIn(formatProfile) >= 0)
 292                         {
 293                                 return (m_regxVersion->indexIn(formatVersion) >= 0);
 294                         }
 295                 }
 296         }
 297
 298         return false;
 299 }
 300
 301 const unsigned int *MP3Encoder::supportedChannelCount(void)
 302 {
 303         static const unsigned int supportedChannels[] = {1, 2, NULL};
 304         return supportedChannels;
 305 }
 306
 307 void MP3Encoder::setAlgoQuality(int value)
 308 {
 309         m_algorithmQuality = qBound(0, value, 3);
 310 }
 311
 312 void MP3Encoder::setBitrateLimits(int minimumBitrate, int maximumBitrate)
 313 {
 314         m_configBitrateMinimum = minimumBitrate;
 315         m_configBitrateMaximum = maximumBitrate;
 316 }
 317
 318 void MP3Encoder::setChannelMode(int value)
 319 {
 320         m_configChannelMode = value;
 321 }
 322
 323 int MP3Encoder::clipBitrate(int bitrate)
 324 {
 325         int targetBitrate = qMin(qMax(bitrate, 32), 320);
 326
 327         int minDiff = INT_MAX;
 328         int minIndx = -1;
 329
 330         for(int i = 0; g_mp3BitrateLUT[i] > 0; i++)
 331         {
 332                 int currentDiff = abs(targetBitrate - g_mp3BitrateLUT[i]);
 333                 if(currentDiff < minDiff)
 334                 {
 335                         minDiff = currentDiff;
 336                         minIndx = i;
 337                 }
 338         }
 339
 340         if(minIndx >= 0)
 341         {
 342                 return g_mp3BitrateLUT[minIndx];
 343         }
 344
 345         return targetBitrate;
 346 }
 347
 348 const AbstractEncoderInfo *MP3Encoder::getEncoderInfo(void)
 349 {
 350         return &g_mp3EncoderInfo;
 351 }