src/Encoder_AC3.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_AC3.h"
  24
  25 #include "Global.h"
  26 #include "Model_Settings.h"
  27
  28 #include <QProcess>
  29 #include <QDir>
  30
  31 static const int g_ac3BitratesLUT[20] = {32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 448, 512, 576, 640, -1};
  32
  33 ///////////////////////////////////////////////////////////////////////////////
  34 // Encoder Info
  35 ///////////////////////////////////////////////////////////////////////////////
  36
  37 class AC3EncoderInfo : public AbstractEncoderInfo
  38 {
  39         virtual bool isModeSupported(int mode) const
  40         {
  41                 switch(mode)
  42                 {
  43                 case SettingsModel::VBRMode:
  44                 case SettingsModel::CBRMode:
  45                         return true;
  46                         break;
  47                 case SettingsModel::ABRMode:
  48                         return false;
  49                         break;
  50                 default:
  51                         MUTILS_THROW("Bad RC mode specified!");
  52                 }
  53         }
  54
  55         virtual int valueCount(int mode) const
  56         {
  57                 switch(mode)
  58                 {
  59                 case SettingsModel::VBRMode:
  60                         return 65;
  61                         break;
  62                 case SettingsModel::ABRMode:
  63                         return 0;
  64                         break;
  65                 case SettingsModel::CBRMode:
  66                         return 19;
  67                         break;
  68                 default:
  69                         MUTILS_THROW("Bad RC mode specified!");
  70                 }
  71         }
  72
  73         virtual int valueAt(int mode, int index) const
  74         {
  75                 switch(mode)
  76                 {
  77                 case SettingsModel::VBRMode:
  78                         return qBound(0, index * 16, 1023);
  79                         break;
  80                 case SettingsModel::ABRMode:
  81                 case SettingsModel::CBRMode:
  82                         return g_ac3BitratesLUT[qBound(0, index, 18)];
  83                         break;
  84                 default:
  85                         MUTILS_THROW("Bad RC mode specified!");
  86                 }
  87         }
  88
  89         virtual int valueType(int mode) const
  90         {
  91                 switch(mode)
  92                 {
  93                 case SettingsModel::VBRMode:
  94                         return TYPE_QUALITY_LEVEL_INT;
  95                         break;
  96                 case SettingsModel::ABRMode:
  97                 case SettingsModel::CBRMode:
  98                         return TYPE_BITRATE;
  99                         break;
 100                 default:
 101                         MUTILS_THROW("Bad RC mode specified!");
 102                 }
 103         }
 104
 105         virtual const char *description(void) const
 106         {
 107                 static const char* s_description = "Aften: A/52 Audio Encoder";
 108                 return s_description;
 109         }
 110
 111         virtual const char *extension(void) const
 112         {
 113                 static const char* s_extension = "ac3";
 114                 return s_extension;
 115         }
 116 }
 117 static const g_aftenEncoderInfo;
 118
 119 ///////////////////////////////////////////////////////////////////////////////
 120 // Encoder implementation
 121 ///////////////////////////////////////////////////////////////////////////////
 122
 123 AC3Encoder::AC3Encoder(void)
 124 :
 125         m_binary(lamexp_tools_lookup("aften.exe"))
 126 {
 127         if(m_binary.isEmpty())
 128         {
 129                 MUTILS_THROW("Error initializing FLAC encoder. Tool 'aften.exe' is not registred!");
 130         }
 131
 132         m_configAudioCodingMode = 0;
 133         m_configDynamicRangeCompression = 5;
 134         m_configExponentSearchSize = 8;
 135         m_configFastBitAllocation = false;
 136 }
 137
 138 AC3Encoder::~AC3Encoder(void)
 139 {
 140 }
 141
 142 bool AC3Encoder::encode(const QString &sourceFile, const AudioFileModel_MetaInfo &metaInfo, const unsigned int duration, const QString &outputFile, volatile bool *abortFlag)
 143 {
 144         QProcess process;
 145         QStringList args;
 146
 147         switch(m_configRCMode)
 148         {
 149         case SettingsModel::VBRMode:
 150                 args << "-q" << QString::number(qBound(0, m_configBitrate * 16, 1023));
 151                 break;
 152         case SettingsModel::CBRMode:
 153                 args << "-b" << QString::number(g_ac3BitratesLUT[qBound(0, m_configBitrate, 18)]);
 154                 break;
 155         default:
 156                 MUTILS_THROW("Bad rate-control mode!");
 157                 break;
 158         }
 159
 160         if(m_configAudioCodingMode >= 1)
 161         {
 162                 args << "-acmod" << QString::number(m_configAudioCodingMode - 1);
 163         }
 164         if(m_configDynamicRangeCompression != 5)
 165         {
 166                 args << "-dynrng" << QString::number(m_configDynamicRangeCompression);
 167         }
 168         if(m_configExponentSearchSize != 8)
 169         {
 170                 args << "-exps" << QString::number(m_configExponentSearchSize);
 171         }
 172         if(m_configFastBitAllocation)
 173         {
 174                 args << "-fba" << QString::number(1);
 175         }
 176
 177         if(!m_configCustomParams.isEmpty()) args << m_configCustomParams.split(" ", QString::SkipEmptyParts);
 178
 179         args << QDir::toNativeSeparators(sourceFile);
 180         args << QDir::toNativeSeparators(outputFile);
 181
 182         if(!startProcess(process, m_binary, args))
 183         {
 184                 return false;
 185         }
 186
 187         bool bTimeout = false;
 188         bool bAborted = false;
 189         int prevProgress = -1;
 190
 191         QRegExp regExp("progress:(\\s+)(\\d+)%(\\s+)\\|");
 192
 193         while(process.state() != QProcess::NotRunning)
 194         {
 195                 if(*abortFlag)
 196                 {
 197                         process.kill();
 198                         bAborted = true;
 199                         emit messageLogged("\nABORTED BY USER !!!");
 200                         break;
 201                 }
 202                 process.waitForReadyRead(m_processTimeoutInterval);
 203                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
 204                 {
 205                         process.kill();
 206                         qWarning("Aften process timed out <-- killing!");
 207                         emit messageLogged("\nPROCESS TIMEOUT !!!");
 208                         bTimeout = true;
 209                         break;
 210                 }
 211                 while(process.bytesAvailable() > 0)
 212                 {
 213                         QByteArray line = process.readLine();
 214                         QString text = QString::fromUtf8(line.constData()).simplified();
 215                         if(regExp.lastIndexIn(text) >= 0)
 216                         {
 217                                 bool ok = false;
 218                                 int progress = regExp.cap(2).toInt(&ok);
 219                                 if(ok && (progress > prevProgress))
 220                                 {
 221                                         emit statusUpdated(progress);
 222                                         prevProgress = qMin(progress + 2, 99);
 223                                 }
 224                         }
 225                         else if(!text.isEmpty())
 226                         {
 227                                 emit messageLogged(text);
 228                         }
 229                 }
 230         }
 231
 232         process.waitForFinished();
 233         if(process.state() != QProcess::NotRunning)
 234         {
 235                 process.kill();
 236                 process.waitForFinished(-1);
 237         }
 238
 239         emit statusUpdated(100);
 240         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 241
 242         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS)
 243         {
 244                 return false;
 245         }
 246
 247         return true;
 248 }
 249
 250 void AC3Encoder::setAudioCodingMode(int value)
 251 {
 252         m_configAudioCodingMode = qMin(8, qMax(0, value));
 253 }
 254
 255 void AC3Encoder::setDynamicRangeCompression(int value)
 256 {
 257         m_configDynamicRangeCompression = qMin(5, qMax(0, value));
 258 }
 259
 260 void AC3Encoder::setExponentSearchSize(int value)
 261 {
 262         m_configExponentSearchSize = qMin(32, qMax(1, value));
 263 }
 264
 265 void AC3Encoder::setFastBitAllocation(bool value)
 266 {
 267         m_configFastBitAllocation = value;
 268 }
 269
 270 const unsigned int *AC3Encoder::supportedChannelCount(void)
 271 {
 272         static const unsigned int supportedChannels[] = {1, 2, 3, 4, 5, 6, NULL};
 273         return supportedChannels;
 274 }
 275
 276 const unsigned int *AC3Encoder::supportedSamplerates(void)
 277 {
 278         static const unsigned int supportedRates[] = {48000, 44100, 32000, NULL};
 279         return supportedRates;
 280 }
 281
 282 bool AC3Encoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 283 {
 284         if(containerType.compare("Wave", Qt::CaseInsensitive) == 0)
 285         {
 286                 if(formatType.compare("PCM", Qt::CaseInsensitive) == 0)
 287                 {
 288                         return true;
 289                 }
 290         }
 291
 292         return false;
 293 }
 294
 295 const AbstractEncoderInfo *AC3Encoder::getEncoderInfo(void)
 296 {
 297         return &g_aftenEncoderInfo;
 298 }