src/Encoder_AC3.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2014 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 static const g_aftenEncoderInfo;
 112
 113 ///////////////////////////////////////////////////////////////////////////////
 114 // Encoder implementation
 115 ///////////////////////////////////////////////////////////////////////////////
 116
 117 AC3Encoder::AC3Encoder(void)
 118 :
 119         m_binary(lamexp_lookup_tool("aften.exe"))
 120 {
 121         if(m_binary.isEmpty())
 122         {
 123                 MUTILS_THROW("Error initializing FLAC encoder. Tool 'aften.exe' is not registred!");
 124         }
 125
 126         m_configAudioCodingMode = 0;
 127         m_configDynamicRangeCompression = 5;
 128         m_configExponentSearchSize = 8;
 129         m_configFastBitAllocation = false;
 130 }
 131
 132 AC3Encoder::~AC3Encoder(void)
 133 {
 134 }
 135
 136 bool AC3Encoder::encode(const QString &sourceFile, const AudioFileModel_MetaInfo &metaInfo, const unsigned int duration, const QString &outputFile, volatile bool *abortFlag)
 137 {
 138         QProcess process;
 139         QStringList args;
 140
 141         switch(m_configRCMode)
 142         {
 143         case SettingsModel::VBRMode:
 144                 args << "-q" << QString::number(qBound(0, m_configBitrate * 16, 1023));
 145                 break;
 146         case SettingsModel::CBRMode:
 147                 args << "-b" << QString::number(g_ac3BitratesLUT[qBound(0, m_configBitrate, 18)]);
 148                 break;
 149         default:
 150                 MUTILS_THROW("Bad rate-control mode!");
 151                 break;
 152         }
 153
 154         if(m_configAudioCodingMode >= 1)
 155         {
 156                 args << "-acmod" << QString::number(m_configAudioCodingMode - 1);
 157         }
 158         if(m_configDynamicRangeCompression != 5)
 159         {
 160                 args << "-dynrng" << QString::number(m_configDynamicRangeCompression);
 161         }
 162         if(m_configExponentSearchSize != 8)
 163         {
 164                 args << "-exps" << QString::number(m_configExponentSearchSize);
 165         }
 166         if(m_configFastBitAllocation)
 167         {
 168                 args << "-fba" << QString::number(1);
 169         }
 170
 171         if(!m_configCustomParams.isEmpty()) args << m_configCustomParams.split(" ", QString::SkipEmptyParts);
 172
 173         args << QDir::toNativeSeparators(sourceFile);
 174         args << QDir::toNativeSeparators(outputFile);
 175
 176         if(!startProcess(process, m_binary, args))
 177         {
 178                 return false;
 179         }
 180
 181         bool bTimeout = false;
 182         bool bAborted = false;
 183         int prevProgress = -1;
 184
 185         QRegExp regExp("progress:(\\s+)(\\d+)%(\\s+)\\|");
 186
 187         while(process.state() != QProcess::NotRunning)
 188         {
 189                 if(*abortFlag)
 190                 {
 191                         process.kill();
 192                         bAborted = true;
 193                         emit messageLogged("\nABORTED BY USER !!!");
 194                         break;
 195                 }
 196                 process.waitForReadyRead(m_processTimeoutInterval);
 197                 if(!process.bytesAvailable() && process.state() == QProcess::Running)
 198                 {
 199                         process.kill();
 200                         qWarning("Aften process timed out <-- killing!");
 201                         emit messageLogged("\nPROCESS TIMEOUT !!!");
 202                         bTimeout = true;
 203                         break;
 204                 }
 205                 while(process.bytesAvailable() > 0)
 206                 {
 207                         QByteArray line = process.readLine();
 208                         QString text = QString::fromUtf8(line.constData()).simplified();
 209                         if(regExp.lastIndexIn(text) >= 0)
 210                         {
 211                                 bool ok = false;
 212                                 int progress = regExp.cap(2).toInt(&ok);
 213                                 if(ok && (progress > prevProgress))
 214                                 {
 215                                         emit statusUpdated(progress);
 216                                         prevProgress = qMin(progress + 2, 99);
 217                                 }
 218                         }
 219                         else if(!text.isEmpty())
 220                         {
 221                                 emit messageLogged(text);
 222                         }
 223                 }
 224         }
 225
 226         process.waitForFinished();
 227         if(process.state() != QProcess::NotRunning)
 228         {
 229                 process.kill();
 230                 process.waitForFinished(-1);
 231         }
 232
 233         emit statusUpdated(100);
 234         emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
 235
 236         if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS)
 237         {
 238                 return false;
 239         }
 240
 241         return true;
 242 }
 243
 244 void AC3Encoder::setAudioCodingMode(int value)
 245 {
 246         m_configAudioCodingMode = qMin(8, qMax(0, value));
 247 }
 248
 249 void AC3Encoder::setDynamicRangeCompression(int value)
 250 {
 251         m_configDynamicRangeCompression = qMin(5, qMax(0, value));
 252 }
 253
 254 void AC3Encoder::setExponentSearchSize(int value)
 255 {
 256         m_configExponentSearchSize = qMin(32, qMax(1, value));
 257 }
 258
 259 void AC3Encoder::setFastBitAllocation(bool value)
 260 {
 261         m_configFastBitAllocation = value;
 262 }
 263
 264 QString AC3Encoder::extension(void)
 265 {
 266         return "ac3";
 267 }
 268
 269 const unsigned int *AC3Encoder::supportedChannelCount(void)
 270 {
 271         static const unsigned int supportedChannels[] = {1, 2, 3, 4, 5, 6, NULL};
 272         return supportedChannels;
 273 }
 274
 275 const unsigned int *AC3Encoder::supportedSamplerates(void)
 276 {
 277         static const unsigned int supportedRates[] = {48000, 44100, 32000, NULL};
 278         return supportedRates;
 279 }
 280
 281 bool AC3Encoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
 282 {
 283         if(containerType.compare("Wave", Qt::CaseInsensitive) == 0)
 284         {
 285                 if(formatType.compare("PCM", Qt::CaseInsensitive) == 0)
 286                 {
 287                         return true;
 288                 }
 289         }
 290
 291         return false;
 292 }
 293
 294 const AbstractEncoderInfo *AC3Encoder::getEncoderInfo(void)
 295 {
 296         return &g_aftenEncoderInfo;
 297 }