src/Thread_Process.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2018 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 "Thread_Process.h"
  24
  25 //Internal
  26 #include "Global.h"
  27 #include "Model_AudioFile.h"
  28 #include "Model_Progress.h"
  29 #include "Encoder_Abstract.h"
  30 #include "Decoder_Abstract.h"
  31 #include "Filter_Abstract.h"
  32 #include "Filter_Downmix.h"
  33 #include "Filter_Resample.h"
  34 #include "Tool_WaveProperties.h"
  35 #include "Registry_Decoder.h"
  36 #include "Model_Settings.h"
  37
  38 //MUtils
  39 #include <MUtils/Global.h>
  40 #include <MUtils/OSSupport.h>
  41 #include <MUtils/Version.h>
  42
  43 //Qt
  44 #include <QUuid>
  45 #include <QFileInfo>
  46 #include <QDir>
  47 #include <QMutex>
  48 #include <QMutexLocker>
  49 #include <QDate>
  50 #include <QThreadPool>
  51
  52 //CRT
  53 #include <limits.h>
  54 #include <time.h>
  55 #include <stdlib.h>
  56
  57 #define DIFF(X,Y) ((X > Y) ? (X-Y) : (Y-X))
  58 #define IS_WAVE(X) ((X.containerType().compare("Wave", Qt::CaseInsensitive) == 0) && (X.audioType().compare("PCM", Qt::CaseInsensitive) == 0))
  59 #define STRDEF(STR,DEF) ((!STR.isEmpty()) ? STR : DEF)
  60
  61 ////////////////////////////////////////////////////////////
  62 // Constructor
  63 ////////////////////////////////////////////////////////////
  64
  65 ProcessThread::ProcessThread(const AudioFileModel &audioFile, const QString &outputDirectory, const QString &tempDirectory, AbstractEncoder *encoder, const bool prependRelativeSourcePath)
  66 :
  67         m_audioFile(audioFile),
  68         m_outputDirectory(outputDirectory),
  69         m_tempDirectory(tempDirectory),
  70         m_encoder(encoder),
  71         m_jobId(QUuid::createUuid()),
  72         m_prependRelativeSourcePath(prependRelativeSourcePath),
  73         m_renamePattern("<BaseName>"),
  74         m_overwriteMode(OverwriteMode_KeepBoth),
  75         m_keepDateTime(false),
  76         m_initialized(-1),
  77         m_propDetect(new WaveProperties())
  78 {
  79         connect(m_encoder, SIGNAL(statusUpdated(int)), this, SLOT(handleUpdate(int)), Qt::DirectConnection);
  80         connect(m_encoder, SIGNAL(messageLogged(QString)), this, SLOT(handleMessage(QString)), Qt::DirectConnection);
  81
  82         connect(m_propDetect, SIGNAL(statusUpdated(int)), this, SLOT(handleUpdate(int)), Qt::DirectConnection);
  83         connect(m_propDetect, SIGNAL(messageLogged(QString)), this, SLOT(handleMessage(QString)), Qt::DirectConnection);
  84
  85         m_currentStep = UnknownStep;
  86 }
  87
  88 ProcessThread::~ProcessThread(void)
  89 {
  90         while(!m_tempFiles.isEmpty())
  91         {
  92                 MUtils::remove_file(m_tempFiles.takeFirst());
  93         }
  94
  95         while(!m_filters.isEmpty())
  96         {
  97                 delete m_filters.takeFirst();
  98         }
  99
 100         MUTILS_DELETE(m_encoder);
 101         MUTILS_DELETE(m_propDetect);
 102
 103         emit processFinished();
 104 }
 105
 106 ////////////////////////////////////////////////////////////
 107 // Init Function
 108 ////////////////////////////////////////////////////////////
 109
 110 bool ProcessThread::init(void)
 111 {
 112         if(m_initialized.testAndSetOrdered((-1), 0))
 113         {
 114                 //Initialize job status
 115                 qDebug("Process thread %s has started.", m_jobId.toString().toLatin1().constData());
 116                 emit processStateInitialized(m_jobId, QFileInfo(m_audioFile.filePath()).fileName(), tr("Starting..."), ProgressModel::JobRunning);
 117
 118                 //Initialize log
 119                 handleMessage(QString().sprintf("LameXP v%u.%02u (Build #%u), compiled on %s at %s", lamexp_version_major(), lamexp_version_minor(), lamexp_version_build(), MUTILS_UTF8(MUtils::Version::app_build_date().toString(Qt::ISODate)), MUTILS_UTF8(MUtils::Version::app_build_time().toString(Qt::ISODate))));
 120                 handleMessage("\n-------------------------------\n");
 121
 122                 return true;
 123         }
 124
 125         qWarning("[ProcessThread::init] Job %s already initialialized, skipping!", m_jobId.toString().toLatin1().constData());
 126         return false;
 127 }
 128
 129 bool ProcessThread::start(QThreadPool *const pool)
 130 {
 131         //Make sure object was initialized correctly
 132         if (m_initialized < 0)
 133         {
 134                 MUTILS_THROW("Object not initialized yet!");
 135         }
 136
 137         if (m_initialized.testAndSetOrdered(0, 1))
 138         {
 139                 m_outFileName.clear();
 140                 m_aborted.fetchAndStoreOrdered(0);
 141                 bool bSuccess = false;
 142
 143                 //Generate output file name
 144                 switch(generateOutFileName(m_outFileName))
 145                 {
 146                 case 1:
 147                         //File name generated successfully :-)
 148                         bSuccess = true;
 149                         pool->start(this);
 150                         break;
 151                 case -1:
 152                         //File name already exists -> skipping!
 153                         emit processStateChanged(m_jobId, tr("Skipped."), ProgressModel::JobSkipped);
 154                         emit processStateFinished(m_jobId, m_outFileName, -1);
 155                         break;
 156                 default:
 157                         //File name could not be generated
 158                         emit processStateChanged(m_jobId, tr("Not found!"), ProgressModel::JobFailed);
 159                         emit processStateFinished(m_jobId, m_outFileName, 0);
 160                         break;
 161                 }
 162
 163                 return bSuccess;
 164         }
 165
 166         qWarning("[ProcessThread::start] Job %s already started, skipping!", m_jobId.toString().toLatin1().constData());
 167         return false;
 168 }
 169
 170 ////////////////////////////////////////////////////////////
 171 // Thread Entry Point
 172 ////////////////////////////////////////////////////////////
 173
 174 void ProcessThread::run()
 175 {
 176         try
 177         {
 178                 processFile();
 179         }
 180         catch(const std::exception &error)
 181         {
 182                 MUTILS_PRINT_ERROR("\nGURU MEDITATION !!!\n\nException error:\n%s\n", error.what());
 183                 MUtils::OS::fatal_exit(L"Unhandeled C++ exception error, application will exit!");
 184         }
 185         catch(...)
 186         {
 187                 MUTILS_PRINT_ERROR("\nGURU MEDITATION !!!\n\nUnknown exception error!\n");
 188                 MUtils::OS::fatal_exit(L"Unhandeled C++ exception error, application will exit!");
 189         }
 190 }
 191
 192 void ProcessThread::processFile()
 193 {
 194         m_aborted = false;
 195         bool bSuccess = true;
 196
 197         //Make sure object was initialized correctly
 198         if(m_initialized < 1)
 199         {
 200                 MUTILS_THROW("Object not initialized yet!");
 201         }
 202
 203         QString sourceFile = m_audioFile.filePath();
 204
 205         //-----------------------------------------------------
 206         // Decode source file
 207         //-----------------------------------------------------
 208
 209         const AudioFileModel_TechInfo &formatInfo = m_audioFile.techInfo();
 210         if(!m_filters.isEmpty() || !m_encoder->isFormatSupported(formatInfo.containerType(), formatInfo.containerProfile(), formatInfo.audioType(), formatInfo.audioProfile(), formatInfo.audioVersion()))
 211         {
 212                 m_currentStep = DecodingStep;
 213                 AbstractDecoder *decoder = DecoderRegistry::lookup(formatInfo.containerType(), formatInfo.containerProfile(), formatInfo.audioType(), formatInfo.audioProfile(), formatInfo.audioVersion());
 214
 215                 if(decoder)
 216                 {
 217                         QString tempFile = generateTempFileName();
 218
 219                         connect(decoder, SIGNAL(statusUpdated(int)), this, SLOT(handleUpdate(int)), Qt::DirectConnection);
 220                         connect(decoder, SIGNAL(messageLogged(QString)), this, SLOT(handleMessage(QString)), Qt::DirectConnection);
 221
 222                         bSuccess = decoder->decode(sourceFile, tempFile, m_aborted);
 223                         MUTILS_DELETE(decoder);
 224
 225                         if(bSuccess)
 226                         {
 227                                 sourceFile = tempFile;
 228                                 m_audioFile.techInfo().setContainerType(QString::fromLatin1("Wave"));
 229                                 m_audioFile.techInfo().setAudioType(QString::fromLatin1("PCM"));
 230
 231                                 if(QFileInfo(sourceFile).size() >= 4294967296i64)
 232                                 {
 233                                         handleMessage(tr("WARNING: Decoded file size exceeds 4 GB, problems might occur!\n"));
 234                                 }
 235
 236                                 handleMessage("\n-------------------------------\n");
 237                         }
 238                 }
 239                 else
 240                 {
 241                         if(QFileInfo(m_outFileName).exists() && (QFileInfo(m_outFileName).size() < 512)) QFile::remove(m_outFileName);
 242                         handleMessage(QString("%1\n%2\n\n%3\t%4\n%5\t%6").arg(tr("The format of this file is NOT supported:"), m_audioFile.filePath(), tr("Container Format:"), m_audioFile.containerInfo(), tr("Audio Format:"), m_audioFile.audioCompressInfo()));
 243                         emit processStateChanged(m_jobId, tr("Unsupported!"), ProgressModel::JobFailed);
 244                         emit processStateFinished(m_jobId, m_outFileName, 0);
 245                         return;
 246                 }
 247         }
 248
 249         //-----------------------------------------------------
 250         // Update audio properties after decode
 251         //-----------------------------------------------------
 252
 253         if(bSuccess && (!m_aborted) && IS_WAVE(m_audioFile.techInfo()))
 254         {
 255                 if(m_encoder->supportedSamplerates() || m_encoder->supportedBitdepths() || m_encoder->supportedChannelCount() || m_encoder->needsTimingInfo() || !m_filters.isEmpty())
 256                 {
 257                         m_currentStep = AnalyzeStep;
 258                         bSuccess = m_propDetect->detect(sourceFile, &m_audioFile.techInfo(), m_aborted);
 259
 260                         if(bSuccess)
 261                         {
 262                                 handleMessage("\n-------------------------------\n");
 263
 264                                 //Do we need to take care if Stereo downmix?
 265                                 const unsigned int *const supportedChannelCount = m_encoder->supportedChannelCount();
 266                                 if(supportedChannelCount && supportedChannelCount[0])
 267                                 {
 268                                         insertDownmixFilter(supportedChannelCount);
 269                                 }
 270
 271                                 //Do we need to take care of downsampling the input?
 272                                 const unsigned int *const supportedSamplerates = m_encoder->supportedSamplerates();
 273                                 const unsigned int *const supportedBitdepths = m_encoder->supportedBitdepths();
 274                                 if((supportedSamplerates && supportedSamplerates[0]) || (supportedBitdepths && supportedBitdepths[0]))
 275                                 {
 276                                         insertDownsampleFilter(supportedSamplerates, supportedBitdepths);
 277                                 }
 278                         }
 279                 }
 280         }
 281
 282         //-----------------------------------------------------
 283         // Apply all audio filters
 284         //-----------------------------------------------------
 285
 286         while(bSuccess && (!m_filters.isEmpty()) && (!m_aborted))
 287         {
 288                 QString tempFile = generateTempFileName();
 289                 AbstractFilter *poFilter = m_filters.takeFirst();
 290                 m_currentStep = FilteringStep;
 291
 292                 connect(poFilter, SIGNAL(statusUpdated(int)), this, SLOT(handleUpdate(int)), Qt::DirectConnection);
 293                 connect(poFilter, SIGNAL(messageLogged(QString)), this, SLOT(handleMessage(QString)), Qt::DirectConnection);
 294
 295                 const AbstractFilter::FilterResult filterResult = poFilter->apply(sourceFile, tempFile, &m_audioFile.techInfo(), m_aborted);
 296                 switch (filterResult)
 297                 {
 298                 case AbstractFilter::FILTER_SUCCESS:
 299                         sourceFile = tempFile;
 300                         break;
 301                 case AbstractFilter::FILTER_FAILURE:
 302                         bSuccess = false;
 303                         break;
 304                 }
 305
 306                 handleMessage("\n-------------------------------\n");
 307                 delete poFilter;
 308         }
 309
 310         //-----------------------------------------------------
 311         // Encode audio file
 312         //-----------------------------------------------------
 313
 314         if(bSuccess && (!m_aborted))
 315         {
 316                 m_currentStep = EncodingStep;
 317                 bSuccess = m_encoder->encode(sourceFile, m_audioFile.metaInfo(), m_audioFile.techInfo().duration(), m_audioFile.techInfo().audioChannels(), m_outFileName, m_aborted);
 318         }
 319
 320         //Clean-up
 321         if((!bSuccess) || MUTILS_BOOLIFY(m_aborted))
 322         {
 323                 QFileInfo fileInfo(m_outFileName);
 324                 if(fileInfo.exists() && (fileInfo.size() < 1024))
 325                 {
 326                         QFile::remove(m_outFileName);
 327                 }
 328         }
 329
 330         //Make sure output file exists
 331         if(bSuccess && (!m_aborted))
 332         {
 333                 const QFileInfo fileInfo(m_outFileName);
 334                 bSuccess = fileInfo.exists() && fileInfo.isFile() && (fileInfo.size() >= 1024);
 335         }
 336
 337         //-----------------------------------------------------
 338         // Finalize
 339         //-----------------------------------------------------
 340
 341         if (bSuccess && (!m_aborted) && m_keepDateTime)
 342         {
 343                 updateFileTime(m_audioFile.filePath(), m_outFileName);
 344         }
 345
 346         MUtils::OS::sleep_ms(12);
 347
 348         //Report result
 349         emit processStateChanged(m_jobId, (MUTILS_BOOLIFY(m_aborted) ? tr("Aborted!") : (bSuccess ? tr("Done.") : tr("Failed!"))), ((bSuccess && (!m_aborted)) ? ProgressModel::JobComplete : ProgressModel::JobFailed));
 350         emit processStateFinished(m_jobId, m_outFileName, (bSuccess ? 1 : 0));
 351
 352         qDebug("Process thread is done.");
 353 }
 354
 355 ////////////////////////////////////////////////////////////
 356 // SLOTS
 357 ////////////////////////////////////////////////////////////
 358
 359 void ProcessThread::handleUpdate(int progress)
 360 {
 361         //qDebug("Progress: %d\n", progress);
 362
 363         switch(m_currentStep)
 364         {
 365         case EncodingStep:
 366                 emit processStateChanged(m_jobId, QString("%1 (%2%)").arg(tr("Encoding"), QString::number(progress)), ProgressModel::JobRunning);
 367                 break;
 368         case AnalyzeStep:
 369                 emit processStateChanged(m_jobId, QString("%1 (%2%)").arg(tr("Analyzing"), QString::number(progress)), ProgressModel::JobRunning);
 370                 break;
 371         case FilteringStep:
 372                 emit processStateChanged(m_jobId, QString("%1 (%2%)").arg(tr("Filtering"), QString::number(progress)), ProgressModel::JobRunning);
 373                 break;
 374         case DecodingStep:
 375                 emit processStateChanged(m_jobId, QString("%1 (%2%)").arg(tr("Decoding"), QString::number(progress)), ProgressModel::JobRunning);
 376                 break;
 377         }
 378 }
 379
 380 void ProcessThread::handleMessage(const QString &line)
 381 {
 382         emit processMessageLogged(m_jobId, line);
 383 }
 384
 385 ////////////////////////////////////////////////////////////
 386 // PRIVAE FUNCTIONS
 387 ////////////////////////////////////////////////////////////
 388
 389 int ProcessThread::generateOutFileName(QString &outFileName)
 390 {
 391         outFileName.clear();
 392
 393         //Make sure the source file exists
 394         const QFileInfo sourceFile(m_audioFile.filePath());
 395         if(!(sourceFile.exists() && sourceFile.isFile()))
 396         {
 397                 handleMessage(QString("%1\n%2").arg(tr("The source audio file could not be found:"), sourceFile.absoluteFilePath()));
 398                 return 0;
 399         }
 400
 401         //Make sure the source file readable
 402         QFile readTest(sourceFile.canonicalFilePath());
 403         if(!readTest.open(QIODevice::ReadOnly))
 404         {
 405                 handleMessage(QString("%1\n%2").arg(tr("The source audio file could not be opened for reading:"), QDir::toNativeSeparators(readTest.fileName())));
 406                 return 0;
 407         }
 408         else
 409         {
 410                 readTest.close();
 411         }
 412
 413         QDir targetDir(MUtils::clean_file_path(m_outputDirectory.isEmpty() ? sourceFile.canonicalPath() : m_outputDirectory, false));
 414
 415         //Prepend relative source file path?
 416         if(m_prependRelativeSourcePath && !m_outputDirectory.isEmpty())
 417         {
 418                 QDir sourceDir = sourceFile.dir();
 419                 if (!sourceDir.isRoot())
 420                 {
 421                         quint32 depth = 0;
 422                         while ((!sourceDir.isRoot()) && (++depth <= 0xFF))
 423                         {
 424                                 if (!sourceDir.cdUp()) break;
 425                         }
 426                         const QString postfix = QFileInfo(sourceDir.relativeFilePath(sourceFile.canonicalFilePath())).path();
 427                         targetDir.setPath(MUtils::clean_file_path(QString("%1/%2").arg(targetDir.absolutePath(), postfix), false));
 428                 }
 429         }
 430
 431         //Make sure output directory does exist
 432         if(!targetDir.exists())
 433         {
 434                 targetDir.mkpath(".");
 435                 if(!targetDir.exists())
 436                 {
 437                         handleMessage(QString("%1\n%2").arg(tr("The target output directory doesn't exist and could NOT be created:"), QDir::toNativeSeparators(targetDir.absolutePath())));
 438                         return 0;
 439                 }
 440         }
 441
 442         //Make sure that the output dir is writable
 443         QFile writeTest(QString("%1/.%2").arg(targetDir.canonicalPath(), MUtils::next_rand_str()));
 444         if(!writeTest.open(QIODevice::ReadWrite))
 445         {
 446                 handleMessage(QString("%1\n%2").arg(tr("The target output directory is NOT writable:"), QDir::toNativeSeparators(targetDir.absolutePath())));
 447                 return 0;
 448         }
 449         else
 450         {
 451                 writeTest.remove();
 452         }
 453
 454         //File extension
 455         const QString fileExt = m_renameFileExt.isEmpty() ? QString::fromUtf8(m_encoder->toEncoderInfo()->extension()) : m_renameFileExt;
 456
 457         //Generate file name
 458         const QString fileName = MUtils::clean_file_name(QString("%1.%2").arg(applyRegularExpression(applyRenamePattern(sourceFile.completeBaseName(), m_audioFile.metaInfo())), fileExt), true);
 459
 460         //Generate full output path
 461         outFileName = QString("%1/%2").arg(targetDir.canonicalPath(), fileName);
 462
 463         //Skip file, if target file exists (optional!)
 464         if((m_overwriteMode == OverwriteMode_SkipExisting) && QFileInfo(outFileName).exists())
 465         {
 466                 handleMessage(QString("%1\n%2\n").arg(tr("Target output file already exists, going to skip this file:"), QDir::toNativeSeparators(outFileName)));
 467                 handleMessage(tr("If you don't want existing files to be skipped, please change the overwrite mode!"));
 468                 return -1;
 469         }
 470
 471         //Delete file, if target file exists (optional!)
 472         if((m_overwriteMode == OverwriteMode_Overwrite) && QFileInfo(outFileName).exists() && QFileInfo(outFileName).isFile())
 473         {
 474                 handleMessage(QString("%1\n%2\n").arg(tr("Target output file already exists, going to delete existing file:"), QDir::toNativeSeparators(outFileName)));
 475                 bool removed = false;
 476                 if(sourceFile.canonicalFilePath().compare(QFileInfo(outFileName).absoluteFilePath(), Qt::CaseInsensitive) != 0)
 477                 {
 478                         for(int i = 0; i < 16; i++)
 479                         {
 480                                 if(QFile::remove(outFileName))
 481                                 {
 482                                         removed = true;
 483                                         break;
 484                                 }
 485                                 MUtils::OS::sleep_ms(1);
 486                         }
 487                 }
 488                 if(!removed)
 489                 {
 490                         handleMessage(QString("%1\n").arg(tr("Failed to delete existing target file, will save to another file name!")));
 491                 }
 492         }
 493
 494         //Generate final name
 495         const QFileInfo origFileName(outFileName);
 496         for (int n = 2; n <= 65534; ++n)
 497         {
 498                 //Check file existence
 499                 if (QFileInfo(outFileName).exists())
 500                 {
 501                         outFileName = origFileName.absoluteDir().filePath(QString("%1 (%2).%3").arg(origFileName.completeBaseName(), QString::number(n), origFileName.suffix()));
 502                         continue;
 503                 }
 504
 505                 //Create placeholder
 506                 QFile placeholder(outFileName);
 507                 if (placeholder.open(QIODevice::WriteOnly))
 508                 {
 509                         placeholder.close();
 510                         return 1;
 511                 }
 512         }
 513
 514         handleMessage(QString("%1\n").arg(tr("Failed to generate non-existing target file name!")));
 515         return 0;
 516 }
 517
 518 QString ProcessThread::applyRenamePattern(const QString &baseName, const AudioFileModel_MetaInfo &metaInfo)
 519 {
 520         QString fileName = m_renamePattern;
 521
 522         fileName.replace("<BaseName>", STRDEF(baseName, tr("Unknown File Name")),         Qt::CaseInsensitive);
 523         fileName.replace("<TrackNo>",  QString().sprintf("%02d", metaInfo.position()),    Qt::CaseInsensitive);
 524         fileName.replace("<Title>",    STRDEF(metaInfo.title(), tr("Unknown Title")) ,    Qt::CaseInsensitive);
 525         fileName.replace("<Artist>",   STRDEF(metaInfo.artist(), tr("Unknown Artist")),   Qt::CaseInsensitive);
 526         fileName.replace("<Album>",    STRDEF(metaInfo.album(), tr("Unknown Album")),     Qt::CaseInsensitive);
 527         fileName.replace("<Year>",     QString().sprintf("%04d", metaInfo.year()),        Qt::CaseInsensitive);
 528         fileName.replace("<Comment>",  STRDEF(metaInfo.comment(), tr("Unknown Comment")), Qt::CaseInsensitive);
 529
 530         return fileName.trimmed().isEmpty() ? baseName : fileName;
 531 }
 532
 533 QString ProcessThread::applyRegularExpression(const QString &baseName)
 534 {
 535         if(m_renameRegExp_Search.isEmpty() || m_renameRegExp_Replace.isEmpty())
 536         {
 537                 return baseName;
 538         }
 539
 540         QRegExp regExp(m_renameRegExp_Search);
 541         if(!regExp.isValid())
 542         {
 543                 qWarning("Invalid regular expression detected -> cannot rename!");
 544                 return baseName;
 545         }
 546
 547         const QString fileName = QString(baseName).replace(regExp, m_renameRegExp_Replace);
 548         return fileName.trimmed().isEmpty() ? baseName : fileName;
 549 }
 550
 551 QString ProcessThread::generateTempFileName(void)
 552 {
 553         const QString tempFileName = MUtils::make_temp_file(m_tempDirectory, "wav", true);
 554         if(tempFileName.isEmpty())
 555         {
 556                 return QString("%1/~whoops%2.wav").arg(m_tempDirectory, QString::number(MUtils::next_rand_u32()));
 557         }
 558
 559         m_tempFiles << tempFileName;
 560         return tempFileName;
 561 }
 562
 563 bool ProcessThread::insertDownsampleFilter(const unsigned int *const supportedSamplerates, const unsigned int *const supportedBitdepths)
 564 {
 565         int targetSampleRate = 0, targetBitDepth = 0;
 566
 567         /* Adjust sample rate */
 568         if(supportedSamplerates && m_audioFile.techInfo().audioSamplerate())
 569         {
 570                 const unsigned int inputRate = m_audioFile.techInfo().audioSamplerate();
 571                 unsigned int currentDiff = UINT_MAX, minimumDiff = UINT_MAX, bestRate = UINT_MAX;
 572
 573                 //Find the most suitable supported sampling rate
 574                 for(int i = 0; supportedSamplerates[i]; i++)
 575                 {
 576                         currentDiff = DIFF(inputRate, supportedSamplerates[i]);
 577                         if((currentDiff < minimumDiff) || ((currentDiff == minimumDiff) && (bestRate < supportedSamplerates[i])))
 578                         {
 579                                 bestRate = supportedSamplerates[i];
 580                                 minimumDiff = currentDiff;
 581                                 if(!(minimumDiff > 0)) break;
 582                         }
 583                 }
 584
 585                 if(bestRate != inputRate)
 586                 {
 587                         targetSampleRate = (bestRate != UINT_MAX) ? bestRate : supportedSamplerates[0];
 588                 }
 589         }
 590
 591         /* Adjust bit depth (word size) */
 592         if(supportedBitdepths && m_audioFile.techInfo().audioBitdepth())
 593         {
 594                 const unsigned int inputBPS = m_audioFile.techInfo().audioBitdepth();
 595                 bool bAdjustBitdepth = true;
 596
 597                 //Is the input bit depth supported exactly? (including IEEE Float)
 598                 for(int i = 0; supportedBitdepths[i]; i++)
 599                 {
 600                         if(supportedBitdepths[i] == inputBPS) bAdjustBitdepth = false;
 601                 }
 602
 603                 if(bAdjustBitdepth)
 604                 {
 605                         unsigned int currentDiff = UINT_MAX, minimumDiff = UINT_MAX, bestBPS = UINT_MAX;
 606                         const unsigned int originalBPS = (inputBPS == AudioFileModel::BITDEPTH_IEEE_FLOAT32) ? 32 : inputBPS;
 607
 608                         //Find the most suitable supported bit depth
 609                         for(int i = 0; supportedBitdepths[i]; i++)
 610                         {
 611                                 if(supportedBitdepths[i] == AudioFileModel::BITDEPTH_IEEE_FLOAT32) continue;
 612
 613                                 currentDiff = DIFF(originalBPS, supportedBitdepths[i]);
 614                                 if((currentDiff < minimumDiff) || ((currentDiff == minimumDiff) && (bestBPS < supportedBitdepths[i])))
 615                                 {
 616                                         bestBPS = supportedBitdepths[i];
 617                                         minimumDiff = currentDiff;
 618                                         if(!(minimumDiff > 0)) break;
 619                                 }
 620                         }
 621
 622                         if(bestBPS != originalBPS)
 623                         {
 624                                 targetBitDepth = (bestBPS != UINT_MAX) ? bestBPS : supportedBitdepths[0];
 625                         }
 626                 }
 627         }
 628
 629         //Check if downsampling filter is already in the chain
 630         if (targetSampleRate || targetBitDepth)
 631         {
 632                 for (int i = 0; i < m_filters.count(); i++)
 633                 {
 634                         if (dynamic_cast<ResampleFilter*>(m_filters.at(i)))
 635                         {
 636                                 qWarning("Encoder requires downsampling, but user has already set resamling filter!");
 637                                 handleMessage("WARNING: Encoder may need resampling, but already using resample filter. Encoding *may* fail!\n");
 638                                 targetSampleRate = targetBitDepth = 0;
 639                         }
 640                 }
 641         }
 642
 643         /* Insert the filter */
 644         if(targetSampleRate || targetBitDepth)
 645         {
 646                 m_filters.append(new ResampleFilter(targetSampleRate, targetBitDepth));
 647                 return true;
 648         }
 649
 650         return false; /*did not insert the resample filter */
 651 }
 652
 653 bool ProcessThread::insertDownmixFilter(const unsigned int *const supportedChannels)
 654 {
 655         //Determine number of channels in source
 656         const unsigned int channels = m_audioFile.techInfo().audioChannels();
 657         bool requiresDownmix = (channels > 0);
 658
 659         //Check whether encoder requires downmixing
 660         if(requiresDownmix)
 661         {
 662                 for (int i = 0; supportedChannels[i]; i++)
 663                 {
 664                         if (supportedChannels[i] == channels)
 665                         {
 666                                 requiresDownmix = false;
 667                                 break;
 668                         }
 669                 }
 670         }
 671
 672         //Check if downmixing filter is already in the chain
 673         if (requiresDownmix)
 674         {
 675                 for (int i = 0; i < m_filters.count(); i++)
 676                 {
 677                         if (dynamic_cast<DownmixFilter*>(m_filters.at(i)))
 678                         {
 679                                 qWarning("Encoder requires Stereo downmix, but user has already forced downmix!");
 680                                 handleMessage("WARNING: Encoder may need downmixning, but already using downmixning filter. Encoding *may* fail!\n");
 681                                 requiresDownmix = false;
 682                                 break;
 683                         }
 684                 }
 685         }
 686
 687         //Now add the downmixing filter, if needed
 688         if(requiresDownmix)
 689         {
 690                 m_filters.append(new DownmixFilter());
 691                 return true;
 692         }
 693
 694         return false; /*did not insert the downmix filter*/
 695 }
 696
 697 bool ProcessThread::updateFileTime(const QString &originalFile, const QString &modifiedFile)
 698 {
 699         bool success = false;
 700
 701         QFileInfo originalFileInfo(originalFile);
 702         const QDateTime timeCreated = originalFileInfo.created(), timeLastMod = originalFileInfo.lastModified();
 703         if (timeCreated.isValid() && timeLastMod.isValid())
 704         {
 705                 if (!MUtils::OS::set_file_time(modifiedFile, timeCreated, timeLastMod))
 706                 {
 707                         qWarning("Failed to update creation/modified time of output file: \"%s\"", MUTILS_UTF8(modifiedFile));
 708                 }
 709         }
 710         else
 711         {
 712                 qWarning("Failed to read creation/modified time of source file: \"%s\"", MUTILS_UTF8(originalFile));
 713         }
 714
 715         return success;
 716 }
 717
 718 ////////////////////////////////////////////////////////////
 719 // PUBLIC FUNCTIONS
 720 ////////////////////////////////////////////////////////////
 721
 722 void ProcessThread::addFilter(AbstractFilter *filter)
 723 {
 724         m_filters.append(filter);
 725 }
 726
 727 void ProcessThread::setRenamePattern(const QString &pattern)
 728 {
 729         const QString newPattern = pattern.simplified();
 730         if(!newPattern.isEmpty()) m_renamePattern = newPattern;
 731 }
 732
 733 void ProcessThread::setRenameRegExp(const QString &search, const QString &replace)
 734 {
 735         const QString newSearch = search.trimmed(), newReplace = replace.simplified();
 736         if((!newSearch.isEmpty()) && (!newReplace.isEmpty()))
 737         {
 738                 m_renameRegExp_Search  = newSearch;
 739                 m_renameRegExp_Replace = newReplace;
 740         }
 741 }
 742
 743 void ProcessThread::setRenameFileExt(const QString &fileExtension)
 744 {
 745         m_renameFileExt = MUtils::clean_file_name(fileExtension, false).simplified();
 746         while(m_renameFileExt.startsWith('.'))
 747         {
 748                 m_renameFileExt = m_renameFileExt.mid(1).trimmed();
 749         }
 750 }
 751
 752 void ProcessThread::setOverwriteMode(const bool &bSkipExistingFile, const bool &bReplacesExisting)
 753 {
 754         if(bSkipExistingFile && bReplacesExisting)
 755         {
 756                 qWarning("Inconsistent overwrite flags -> reverting to default!");
 757                 m_overwriteMode = OverwriteMode_KeepBoth;
 758         }
 759         else
 760         {
 761                 m_overwriteMode = OverwriteMode_KeepBoth;
 762                 if(bSkipExistingFile) m_overwriteMode = OverwriteMode_SkipExisting;
 763                 if(bReplacesExisting) m_overwriteMode = OverwriteMode_Overwrite;
 764         }
 765 }
 766
 767 void ProcessThread::setKeepDateTime(const bool &keepDateTime)
 768 {
 769         m_keepDateTime = keepDateTime;
 770 }
 771
 772 ////////////////////////////////////////////////////////////
 773 // EVENTS
 774 ////////////////////////////////////////////////////////////
 775
 776 /*NONE*/