src/Encoder_AC3.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2023 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; always including the non-optional
   9 // LAMEXP GNU GENERAL PUBLIC LICENSE ADDENDUM. See "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         virtual bool isResamplingSupported(void) const
 118         {
 119                 return false;
 120         }
 121 }
 122 static const g_aftenEncoderInfo;
 123
 124 ///////////////////////////////////////////////////////////////////////////////
 125 // Encoder implementation
 126 ///////////////////////////////////////////////////////////////////////////////
 127
 128 AC3Encoder::AC3Encoder(void)
 129 :
 130         m_binary(lamexp_tools_lookup(L1S("aften.exe")))
 131 {
 132         if(m_binary.isEmpty())
 133         {
 134                 MUTILS_THROW("Error initializing FLAC encoder. Tool 'aften.exe' is not registred!");
 135         }
 136
 137         m_configAudioCodingMode = 0;
 138         m_configDynamicRangeCompression = 5;
 139         m_configExponentSearchSize = 8;
 140         m_configFastBitAllocation = false;
 141 }
 142
 143 AC3Encoder::~AC3Encoder(void)
 144 {
 145 }
 146
 147 bool AC3Encoder::encode(const QString &sourceFile, const AudioFileModel_MetaInfo& /*metaInfo*/, const unsigned int /*duration*/, const unsigned int /*channels*/, const QString &outputFile, QAtomicInt &abortFlag)
 148 {
 149         QProcess process;
 150         QStringList args;
 151
 152         switch(m_configRCMode)
 153         {
 154         case SettingsModel::VBRMode:
 155                 args << L1S("-q") << QString::number(qBound(0, m_configBitrate * 16, 1023));
 156                 break;
 157         case SettingsModel::CBRMode:
 158                 args << L1S("-b") << QString::number(g_ac3BitratesLUT[qBound(0, m_configBitrate, 18)]);
 159                 break;
 160         default:
 161                 MUTILS_THROW("Bad rate-control mode!");
 162                 break;
 163         }
 164
 165         if(m_configAudioCodingMode >= 1)
 166         {
 167                 args << L1S("-acmod") << QString::number(m_configAudioCodingMode - 1);
 168         }
 169         if(m_configDynamicRangeCompression != 5)
 170         {
 171                 args << L1S("-dynrng") << QString::number(m_configDynamicRangeCompression);
 172         }
 173         if(m_configExponentSearchSize != 8)
 174         {
 175                 args << L1S("-exps") << QString::number(m_configExponentSearchSize);
 176         }
 177         if(m_configFastBitAllocation)
 178         {
 179                 args << L1S("-fba") << QString::number(1);
 180         }
 181
 182         if(!m_configCustomParams.isEmpty()) args << m_configCustomParams.split(" ", QString::SkipEmptyParts);
 183
 184         args << QDir::toNativeSeparators(sourceFile);
 185         args << QDir::toNativeSeparators(outputFile);
 186
 187         if(!startProcess(process, m_binary, args))
 188         {
 189                 return false;
 190         }
 191
 192         int prevProgress = -1;
 193         QRegExp regExp(L1S("progress:\\s+(\\d+)%"));
 194
 195         const result_t result = awaitProcess(process, abortFlag, [this, &prevProgress, &regExp](const QString &text)
 196         {
 197                 if (regExp.lastIndexIn(text) >= 0)
 198                 {
 199                         qint32 newProgress;
 200                         if (MUtils::regexp_parse_int32(regExp, newProgress))
 201                         {
 202                                 if (newProgress > prevProgress)
 203                                 {
 204                                         emit statusUpdated(newProgress);
 205                                         prevProgress = NEXT_PROGRESS(newProgress);
 206                                 }
 207                         }
 208                         return true;
 209                 }
 210                 return false;
 211         });
 212
 213         return (result == RESULT_SUCCESS);
 214 }
 215
 216 void AC3Encoder::setAudioCodingMode(int value)
 217 {
 218         m_configAudioCodingMode = qMin(8, qMax(0, value));
 219 }
 220
 221 void AC3Encoder::setDynamicRangeCompression(int value)
 222 {
 223         m_configDynamicRangeCompression = qMin(5, qMax(0, value));
 224 }
 225
 226 void AC3Encoder::setExponentSearchSize(int value)
 227 {
 228         m_configExponentSearchSize = qMin(32, qMax(1, value));
 229 }
 230
 231 void AC3Encoder::setFastBitAllocation(bool value)
 232 {
 233         m_configFastBitAllocation = value;
 234 }
 235
 236 const unsigned int *AC3Encoder::supportedChannelCount(void)
 237 {
 238         static const unsigned int supportedChannels[] = {1, 2, 3, 4, 5, 6, NULL};
 239         return supportedChannels;
 240 }
 241
 242 const unsigned int *AC3Encoder::supportedSamplerates(void)
 243 {
 244         static const unsigned int supportedRates[] = {48000, 44100, 32000, NULL};
 245         return supportedRates;
 246 }
 247
 248 bool AC3Encoder::isFormatSupported(const QString &containerType, const QString& /*containerProfile*/, const QString &formatType, const QString& /*formatProfile*/, const QString& /*formatVersion*/)
 249 {
 250         if(containerType.compare(L1S("Wave"), Qt::CaseInsensitive) == 0)
 251         {
 252                 if(formatType.compare(L1S("PCM"), Qt::CaseInsensitive) == 0)
 253                 {
 254                         return true;
 255                 }
 256         }
 257
 258         return false;
 259 }
 260
 261 const AbstractEncoderInfo *AC3Encoder::getEncoderInfo(void)
 262 {
 263         return &g_aftenEncoderInfo;
 264 }