src/Thread_Process.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 "Thread_Process.h"
  24
  25 #include "Global.h"
  26 #include "Model_AudioFile.h"
  27 #include "Model_Progress.h"
  28 #include "Encoder_Abstract.h"
  29 #include "Decoder_Abstract.h"
  30 #include "Filter_Abstract.h"
  31 #include "Filter_Downmix.h"
  32 #include "Filter_Resample.h"
  33 #include "Tool_WaveProperties.h"
  34 #include "Registry_Decoder.h"
  35 #include "Model_Settings.h"
  36
  37 #include <QUuid>
  38 #include <QFileInfo>
  39 #include <QDir>
  40 #include <QMutex>
  41 #include <QMutexLocker>
  42 #include <QDate>
  43 #include <QThreadPool>
  44
  45 #include <limits.h>
  46 #include <time.h>
  47 #include <stdlib.h>
  48
  49 #define DIFF(X,Y) ((X > Y) ? (X-Y) : (Y-X))
  50 #define IS_WAVE(X) ((X.containerType().compare("Wave", Qt::CaseInsensitive) == 0) && (X.audioType().compare("PCM", Qt::CaseInsensitive) == 0))
  51 #define STRDEF(STR,DEF) ((!STR.isEmpty()) ? STR : DEF)
  52
  53 ////////////////////////////////////////////////////////////
  54 // Constructor
  55 ////////////////////////////////////////////////////////////
  56
  57 ProcessThread::ProcessThread(const AudioFileModel &audioFile, const QString &outputDirectory, const QString &tempDirectory, AbstractEncoder *encoder, const bool prependRelativeSourcePath)
  58 :
  59         m_audioFile(audioFile),
  60         m_outputDirectory(outputDirectory),
  61         m_tempDirectory(tempDirectory),
  62         m_encoder(encoder),
  63         m_jobId(QUuid::createUuid()),
  64         m_prependRelativeSourcePath(prependRelativeSourcePath),
  65         m_renamePattern("<BaseName>"),
  66         m_overwriteMode(OverwriteMode_KeepBoth),
  67         m_initialized(-1),
  68         m_aborted(false),
  69         m_propDetect(new WaveProperties())
  70 {
  71         connect(m_encoder, SIGNAL(statusUpdated(int)), this, SLOT(handleUpdate(int)), Qt::DirectConnection);
  72         connect(m_encoder, SIGNAL(messageLogged(QString)), this, SLOT(handleMessage(QString)), Qt::DirectConnection);
  73
  74         connect(m_propDetect, SIGNAL(statusUpdated(int)), this, SLOT(handleUpdate(int)), Qt::DirectConnection);
  75         connect(m_propDetect, SIGNAL(messageLogged(QString)), this, SLOT(handleMessage(QString)), Qt::DirectConnection);
  76
  77         m_currentStep = UnknownStep;
  78 }
  79
  80 ProcessThread::~ProcessThread(void)
  81 {
  82         while(!m_tempFiles.isEmpty())
  83         {
  84                 lamexp_remove_file(m_tempFiles.takeFirst());
  85         }
  86
  87         while(!m_filters.isEmpty())
  88         {
  89                 delete m_filters.takeFirst();
  90         }
  91
  92         LAMEXP_DELETE(m_encoder);
  93         LAMEXP_DELETE(m_propDetect);
  94
  95         emit processFinished();
  96 }
  97
  98 ////////////////////////////////////////////////////////////
  99 // Init Function
 100 ////////////////////////////////////////////////////////////
 101
 102 bool ProcessThread::init(void)
 103 {
 104         if(m_initialized < 0)
 105         {
 106                 m_initialized = 0;
 107
 108                 //Initialize job status
 109                 qDebug("Process thread %s has started.", m_jobId.toString().toLatin1().constData());
 110                 emit processStateInitialized(m_jobId, QFileInfo(m_audioFile.filePath()).fileName(), tr("Starting..."), ProgressModel::JobRunning);
 111
 112                 //Initialize log
 113                 handleMessage(QString().sprintf("LameXP v%u.%02u (Build #%u), compiled on %s at %s", lamexp_version_major(), lamexp_version_minor(), lamexp_version_build(), lamexp_version_date().toString(Qt::ISODate).toLatin1().constData(), lamexp_version_time()));
 114                 handleMessage("\n-------------------------------\n");
 115
 116                 return true;
 117         }
 118
 119         qWarning("[ProcessThread::init] Job %s already initialialized, skipping!", m_jobId.toString().toLatin1().constData());
 120         return false;
 121 }
 122
 123 bool ProcessThread::start(QThreadPool *pool)
 124 {
 125         //Make sure object was initialized correctly
 126         if(m_initialized < 0)
 127         {
 128                 THROW("Object not initialized yet!");
 129         }
 130
 131         if(m_initialized < 1)
 132         {
 133                 m_initialized = 1;
 134
 135                 m_outFileName.clear();
 136                 bool bSuccess = false;
 137
 138                 //Generate output file name
 139                 switch(generateOutFileName(m_outFileName))
 140                 {
 141                 case 1:
 142                         //File name generated successfully :-)
 143                         bSuccess = true;
 144                         pool->start(this);
 145                         break;
 146                 case -1:
 147                         //File name already exists -> skipping!
 148                         emit processStateChanged(m_jobId, tr("Skipped."), ProgressModel::JobSkipped);
 149                         emit processStateFinished(m_jobId, m_outFileName, -1);
 150                         break;
 151                 default:
 152                         //File name could not be generated
 153                         emit processStateChanged(m_jobId, tr("Not found!"), ProgressModel::JobFailed);
 154                         emit processStateFinished(m_jobId, m_outFileName, 0);
 155                         break;
 156                 }
 157
 158                 if(!bSuccess)
 159                 {
 160                         emit processFinished();
 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                 PRINT_ERROR("\nGURU MEDITATION !!!\n\nException error:\n%s\n", error.what());
 183                 lamexp_fatal_exit("Unhandeled C++ exception error, application will exit!");
 184         }
 185         catch(...)
 186         {
 187                 PRINT_ERROR("\nGURU MEDITATION !!!\n\nUnknown exception error!\n");
 188                 lamexp_fatal_exit("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                 THROW("Object not initialized yet!");
 201         }
 202
 203         QString sourceFile = m_audioFile.filePath();
 204
 205         //------------------
 206         //Decode source file
 207         //------------------
 208         const AudioFileModel_TechInfo &formatInfo = m_audioFile.techInfo();
 209         if(!m_filters.isEmpty() || !m_encoder->isFormatSupported(formatInfo.containerType(), formatInfo.containerProfile(), formatInfo.audioType(), formatInfo.audioProfile(), formatInfo.audioVersion()))
 210         {
 211                 m_currentStep = DecodingStep;
 212                 AbstractDecoder *decoder = DecoderRegistry::lookup(formatInfo.containerType(), formatInfo.containerProfile(), formatInfo.audioType(), formatInfo.audioProfile(), formatInfo.audioVersion());
 213
 214                 if(decoder)
 215                 {
 216                         QString tempFile = generateTempFileName();
 217
 218                         connect(decoder, SIGNAL(statusUpdated(int)), this, SLOT(handleUpdate(int)), Qt::DirectConnection);
 219                         connect(decoder, SIGNAL(messageLogged(QString)), this, SLOT(handleMessage(QString)), Qt::DirectConnection);
 220
 221                         bSuccess = decoder->decode(sourceFile, tempFile, &m_aborted);
 222                         LAMEXP_DELETE(decoder);
 223
 224                         if(bSuccess)
 225                         {
 226                                 sourceFile = tempFile;
 227                                 m_audioFile.techInfo().setContainerType(QString::fromLatin1("Wave"));
 228                                 m_audioFile.techInfo().setAudioType(QString::fromLatin1("PCM"));
 229
 230                                 if(QFileInfo(sourceFile).size() >= 4294967296i64)
 231                                 {
 232                                         handleMessage(tr("WARNING: Decoded file size exceeds 4 GB, problems might occur!\n"));
 233                                 }
 234
 235                                 handleMessage("\n-------------------------------\n");
 236                         }
 237                 }
 238                 else
 239                 {
 240                         if(QFileInfo(m_outFileName).exists() && (QFileInfo(m_outFileName).size() < 512)) QFile::remove(m_outFileName);
 241                         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()));
 242                         emit processStateChanged(m_jobId, tr("Unsupported!"), ProgressModel::JobFailed);
 243                         emit processStateFinished(m_jobId, m_outFileName, 0);
 244                         return;
 245                 }
 246         }
 247
 248         //------------------------------------
 249         //Update audio properties after decode
 250         //------------------------------------
 251         if(bSuccess && !m_aborted && IS_WAVE(m_audioFile.techInfo()))
 252         {
 253                 if(m_encoder->supportedSamplerates() || m_encoder->supportedBitdepths() || m_encoder->supportedChannelCount() || m_encoder->needsTimingInfo() || !m_filters.isEmpty())
 254                 {
 255                         m_currentStep = AnalyzeStep;
 256                         bSuccess = m_propDetect->detect(sourceFile, &m_audioFile.techInfo(), &m_aborted);
 257
 258                         if(bSuccess)
 259                         {
 260                                 handleMessage("\n-------------------------------\n");
 261
 262                                 //Do we need to take care if Stereo downmix?
 263                                 if(m_encoder->supportedChannelCount())
 264                                 {
 265                                         insertDownmixFilter();
 266                                 }
 267
 268                                 //Do we need to take care of downsampling the input?
 269                                 if(m_encoder->supportedSamplerates() || m_encoder->supportedBitdepths())
 270                                 {
 271                                         insertDownsampleFilter();
 272                                 }
 273                         }
 274                 }
 275         }
 276
 277         //-----------------------
 278         //Apply all audio filters
 279         //-----------------------
 280         if(bSuccess)
 281         {
 282                 while(!m_filters.isEmpty() && !m_aborted)
 283                 {
 284                         QString tempFile = generateTempFileName();
 285                         AbstractFilter *poFilter = m_filters.takeFirst();
 286                         m_currentStep = FilteringStep;
 287
 288                         connect(poFilter, SIGNAL(statusUpdated(int)), this, SLOT(handleUpdate(int)), Qt::DirectConnection);
 289                         connect(poFilter, SIGNAL(messageLogged(QString)), this, SLOT(handleMessage(QString)), Qt::DirectConnection);
 290
 291                         if(poFilter->apply(sourceFile, tempFile, &m_audioFile.techInfo(), &m_aborted))
 292                         {
 293                                 sourceFile = tempFile;
 294                         }
 295
 296                         handleMessage("\n-------------------------------\n");
 297                         delete poFilter;
 298                 }
 299         }
 300
 301         //-----------------
 302         //Encode audio file
 303         //-----------------
 304         if(bSuccess && !m_aborted)
 305         {
 306                 m_currentStep = EncodingStep;
 307                 bSuccess = m_encoder->encode(sourceFile, m_audioFile.metaInfo(), m_audioFile.techInfo().duration(), m_outFileName, &m_aborted);
 308         }
 309
 310         //Clean-up
 311         if((!bSuccess) || m_aborted)
 312         {
 313                 QFileInfo fileInfo(m_outFileName);
 314                 if(fileInfo.exists() && (fileInfo.size() < 512))
 315                 {
 316                         QFile::remove(m_outFileName);
 317                 }
 318         }
 319
 320         //Make sure output file exists
 321         if(bSuccess && (!m_aborted))
 322         {
 323                 QFileInfo fileInfo(m_outFileName);
 324                 bSuccess = fileInfo.exists() && fileInfo.isFile() && (fileInfo.size() > 0);
 325         }
 326
 327         lamexp_sleep(125);
 328
 329         //Report result
 330         emit processStateChanged(m_jobId, (m_aborted ? tr("Aborted!") : (bSuccess ? tr("Done.") : tr("Failed!"))), ((bSuccess && !m_aborted) ? ProgressModel::JobComplete : ProgressModel::JobFailed));
 331         emit processStateFinished(m_jobId, m_outFileName, (bSuccess ? 1 : 0));
 332
 333         qDebug("Process thread is done.");
 334 }
 335
 336 ////////////////////////////////////////////////////////////
 337 // SLOTS
 338 ////////////////////////////////////////////////////////////
 339
 340 void ProcessThread::handleUpdate(int progress)
 341 {
 342         //qDebug("Progress: %d\n", progress);
 343
 344         switch(m_currentStep)
 345         {
 346         case EncodingStep:
 347                 emit processStateChanged(m_jobId, QString("%1 (%2%)").arg(tr("Encoding"), QString::number(progress)), ProgressModel::JobRunning);
 348                 break;
 349         case AnalyzeStep:
 350                 emit processStateChanged(m_jobId, QString("%1 (%2%)").arg(tr("Analyzing"), QString::number(progress)), ProgressModel::JobRunning);
 351                 break;
 352         case FilteringStep:
 353                 emit processStateChanged(m_jobId, QString("%1 (%2%)").arg(tr("Filtering"), QString::number(progress)), ProgressModel::JobRunning);
 354                 break;
 355         case DecodingStep:
 356                 emit processStateChanged(m_jobId, QString("%1 (%2%)").arg(tr("Decoding"), QString::number(progress)), ProgressModel::JobRunning);
 357                 break;
 358         }
 359 }
 360
 361 void ProcessThread::handleMessage(const QString &line)
 362 {
 363         emit processMessageLogged(m_jobId, line);
 364 }
 365
 366 ////////////////////////////////////////////////////////////
 367 // PRIVAE FUNCTIONS
 368 ////////////////////////////////////////////////////////////
 369
 370 int ProcessThread::generateOutFileName(QString &outFileName)
 371 {
 372         outFileName.clear();
 373
 374         //Make sure the source file exists
 375         QFileInfo sourceFile(m_audioFile.filePath());
 376         if(!(sourceFile.exists() && sourceFile.isFile()))
 377         {
 378                 handleMessage(QString("%1\n%2").arg(tr("The source audio file could not be found:"), sourceFile.absoluteFilePath()));
 379                 return 0;
 380         }
 381
 382         //Make sure the source file readable
 383         QFile readTest(sourceFile.canonicalFilePath());
 384         if(!readTest.open(QIODevice::ReadOnly))
 385         {
 386                 handleMessage(QString("%1\n%2").arg(tr("The source audio file could not be opened for reading:"), QDir::toNativeSeparators(readTest.fileName())));
 387                 return 0;
 388         }
 389         else
 390         {
 391                 readTest.close();
 392         }
 393
 394         QString baseName = sourceFile.completeBaseName();
 395         QDir targetDir(m_outputDirectory.isEmpty() ? sourceFile.canonicalPath() : m_outputDirectory);
 396
 397         //Prepend relative source file path?
 398         if(m_prependRelativeSourcePath && !m_outputDirectory.isEmpty())
 399         {
 400                 QDir rootDir = sourceFile.dir();
 401                 while(!rootDir.isRoot())
 402                 {
 403                         if(!rootDir.cdUp()) break;
 404                 }
 405                 targetDir.setPath(QString("%1/%2").arg(targetDir.absolutePath(), QFileInfo(rootDir.relativeFilePath(sourceFile.canonicalFilePath())).path()));
 406         }
 407
 408         //Make sure output directory does exist
 409         if(!targetDir.exists())
 410         {
 411                 targetDir.mkpath(".");
 412                 if(!targetDir.exists())
 413                 {
 414                         handleMessage(QString("%1\n%2").arg(tr("The target output directory doesn't exist and could NOT be created:"), QDir::toNativeSeparators(targetDir.absolutePath())));
 415                         return 0;
 416                 }
 417         }
 418
 419         //Make sure that the output dir is writable
 420         QFile writeTest(QString("%1/.%2").arg(targetDir.canonicalPath(), lamexp_rand_str()));
 421         if(!writeTest.open(QIODevice::ReadWrite))
 422         {
 423                 handleMessage(QString("%1\n%2").arg(tr("The target output directory is NOT writable:"), QDir::toNativeSeparators(targetDir.absolutePath())));
 424                 return 0;
 425         }
 426         else
 427         {
 428                 writeTest.remove();
 429         }
 430
 431         //Apply rename pattern
 432         QString fileName = applyRenamePattern(baseName, m_audioFile.metaInfo());
 433
 434         //Generate full output path
 435         outFileName = QString("%1/%2.%3").arg(targetDir.canonicalPath(), fileName, m_encoder->extension());
 436
 437         //Skip file, if target file exists (optional!)
 438         if((m_overwriteMode == OverwriteMode_SkipExisting) && QFileInfo(outFileName).exists())
 439         {
 440                 handleMessage(QString("%1\n%2\n").arg(tr("Target output file already exists, going to skip this file:"), QDir::toNativeSeparators(outFileName)));
 441                 handleMessage(tr("If you don't want existing files to be skipped, please change the overwrite mode!"));
 442                 return -1;
 443         }
 444
 445         //Delete file, if target file exists (optional!)
 446         if((m_overwriteMode == OverwriteMode_Overwrite) && QFileInfo(outFileName).exists() && QFileInfo(outFileName).isFile())
 447         {
 448                 handleMessage(QString("%1\n%2\n").arg(tr("Target output file already exists, going to delete existing file:"), QDir::toNativeSeparators(outFileName)));
 449                 if(sourceFile.canonicalFilePath().compare(QFileInfo(outFileName).absoluteFilePath(), Qt::CaseInsensitive) != 0)
 450                 {
 451                         for(int i = 0; i < 16; i++)
 452                         {
 453                                 if(QFile::remove(outFileName))
 454                                 {
 455                                         break;
 456                                 }
 457                                 lamexp_sleep(125);
 458                         }
 459                 }
 460                 if(QFileInfo(outFileName).exists())
 461                 {
 462                         handleMessage(QString("%1\n").arg(tr("Failed to delete existing target file, will save to another file name!")));
 463                 }
 464         }
 465
 466         int n = 1;
 467
 468         //Generate final name
 469         while(QFileInfo(outFileName).exists() && (n < (INT_MAX/2)))
 470         {
 471                 outFileName = QString("%1/%2 (%3).%4").arg(targetDir.canonicalPath(), fileName, QString::number(++n), m_encoder->extension());
 472         }
 473
 474         //Create placeholder
 475         QFile placeholder(outFileName);
 476         if(placeholder.open(QIODevice::WriteOnly))
 477         {
 478                 placeholder.close();
 479         }
 480
 481         return 1;
 482 }
 483
 484 QString ProcessThread::applyRenamePattern(const QString &baseName, const AudioFileModel_MetaInfo &metaInfo)
 485 {
 486         QString fileName = m_renamePattern;
 487
 488         fileName.replace("<BaseName>", STRDEF(baseName, tr("Unknown File Name")), Qt::CaseInsensitive);
 489         fileName.replace("<TrackNo>", QString().sprintf("%02d", metaInfo.position()), Qt::CaseInsensitive);
 490         fileName.replace("<Title>", STRDEF(metaInfo.title(), tr("Unknown Title")) , Qt::CaseInsensitive);
 491         fileName.replace("<Artist>", STRDEF(metaInfo.artist(), tr("Unknown Artist")), Qt::CaseInsensitive);
 492         fileName.replace("<Album>", STRDEF(metaInfo.album(), tr("Unknown Album")), Qt::CaseInsensitive);
 493         fileName.replace("<Year>", QString().sprintf("%04d", metaInfo.year()), Qt::CaseInsensitive);
 494         fileName.replace("<Comment>", STRDEF(metaInfo.comment(), tr("Unknown Comment")), Qt::CaseInsensitive);
 495         fileName = lamexp_clean_filename(fileName).simplified();
 496
 497         return fileName;
 498 }
 499
 500 QString ProcessThread::generateTempFileName(void)
 501 {
 502         bool bOkay = false;
 503         QString tempFileName;
 504
 505         for(int i = 0; i < 4096; i++)
 506         {
 507                 tempFileName = QString("%1/%2.wav").arg(m_tempDirectory, lamexp_rand_str());
 508                 if(m_tempFiles.contains(tempFileName, Qt::CaseInsensitive) || QFileInfo(tempFileName).exists())
 509                 {
 510                         continue;
 511                 }
 512
 513                 QFile file(tempFileName);
 514                 if(file.open(QFile::ReadWrite))
 515                 {
 516                         file.close();
 517                         bOkay = true;
 518                         break;
 519                 }
 520         }
 521
 522         if(!bOkay)
 523         {
 524                 qWarning("Failed to generate unique temp file name!");
 525                 return QString("%1/~whoops.wav").arg(m_tempDirectory);
 526         }
 527
 528         m_tempFiles << tempFileName;
 529         return tempFileName;
 530 }
 531
 532 void ProcessThread::insertDownsampleFilter(void)
 533 {
 534         int targetSampleRate = 0;
 535         int targetBitDepth = 0;
 536
 537         /* Adjust sample rate */
 538         if(m_encoder->supportedSamplerates() && m_audioFile.techInfo().audioSamplerate())
 539         {
 540                 bool applyDownsampling = true;
 541
 542                 //Check if downsampling filter is already in the chain
 543                 for(int i = 0; i < m_filters.count(); i++)
 544                 {
 545                         if(dynamic_cast<ResampleFilter*>(m_filters.at(i)))
 546                         {
 547                                 qWarning("Encoder requires downsampling, but user has already set resamling filter!");
 548                                 handleMessage("WARNING: Encoder may need resampling, but already using resample filter. Encoding *may* fail!\n");
 549                                 applyDownsampling = false;
 550                         }
 551                 }
 552
 553                 //Now determine the target sample rate, if required
 554                 if(applyDownsampling)
 555                 {
 556                         const unsigned int *supportedRates = m_encoder->supportedSamplerates();
 557                         const unsigned int inputRate = m_audioFile.techInfo().audioSamplerate();
 558                         unsigned int currentDiff = UINT_MAX, minimumDiff = UINT_MAX, bestRate = UINT_MAX;
 559
 560                         //Find the most suitable supported sampling rate
 561                         for(int i = 0; supportedRates[i]; i++)
 562                         {
 563                                 currentDiff = DIFF(inputRate, supportedRates[i]);
 564                                 if((currentDiff < minimumDiff) || ((currentDiff == minimumDiff) && (bestRate < supportedRates[i])))
 565                                 {
 566                                         bestRate = supportedRates[i];
 567                                         minimumDiff = currentDiff;
 568                                         if(!(minimumDiff > 0)) break;
 569                                 }
 570                         }
 571
 572                         if(bestRate != inputRate)
 573                         {
 574                                 targetSampleRate = (bestRate != UINT_MAX) ? bestRate : supportedRates[0];
 575                         }
 576                 }
 577         }
 578
 579         /* Adjust bit depth (word size) */
 580         if(m_encoder->supportedBitdepths() && m_audioFile.techInfo().audioBitdepth())
 581         {
 582                 const unsigned int inputBPS = m_audioFile.techInfo().audioBitdepth();
 583                 const unsigned int *supportedBPS = m_encoder->supportedBitdepths();
 584
 585                 bool bAdjustBitdepth = true;
 586
 587                 //Is the input bit depth supported exactly? (including IEEE Float)
 588                 for(int i = 0; supportedBPS[i]; i++)
 589                 {
 590                         if(supportedBPS[i] == inputBPS) bAdjustBitdepth = false;
 591                 }
 592
 593                 if(bAdjustBitdepth)
 594                 {
 595                         unsigned int currentDiff = UINT_MAX, minimumDiff = UINT_MAX, bestBPS = UINT_MAX;
 596                         const unsigned int originalBPS = (inputBPS == AudioFileModel::BITDEPTH_IEEE_FLOAT32) ? 32 : inputBPS;
 597
 598                         //Find the most suitable supported bit depth
 599                         for(int i = 0; supportedBPS[i]; i++)
 600                         {
 601                                 if(supportedBPS[i] == AudioFileModel::BITDEPTH_IEEE_FLOAT32) continue;
 602
 603                                 currentDiff = DIFF(originalBPS, supportedBPS[i]);
 604                                 if((currentDiff < minimumDiff) || ((currentDiff == minimumDiff) && (bestBPS < supportedBPS[i])))
 605                                 {
 606                                         bestBPS = supportedBPS[i];
 607                                         minimumDiff = currentDiff;
 608                                         if(!(minimumDiff > 0)) break;
 609                                 }
 610                         }
 611
 612                         if(bestBPS != originalBPS)
 613                         {
 614                                 targetBitDepth = (bestBPS != UINT_MAX) ? bestBPS : supportedBPS[0];
 615                         }
 616                 }
 617         }
 618
 619         /* Insert the filter */
 620         if(targetSampleRate || targetBitDepth)
 621         {
 622                 m_filters.append(new ResampleFilter(targetSampleRate, targetBitDepth));
 623         }
 624 }
 625
 626 void ProcessThread::insertDownmixFilter(void)
 627 {
 628         bool applyDownmixing = true;
 629
 630         //Check if downmixing filter is already in the chain
 631         for(int i = 0; i < m_filters.count(); i++)
 632         {
 633                 if(dynamic_cast<DownmixFilter*>(m_filters.at(i)))
 634                 {
 635                         qWarning("Encoder requires Stereo downmix, but user has already forced downmix!");
 636                         handleMessage("WARNING: Encoder may need downmixning, but already using downmixning filter. Encoding *may* fail!\n");
 637                         applyDownmixing = false;
 638                 }
 639         }
 640
 641         //Now add the downmixing filter, if needed
 642         if(applyDownmixing)
 643         {
 644                 bool requiresDownmix = true;
 645                 const unsigned int *supportedChannels = m_encoder->supportedChannelCount();
 646                 unsigned int channels = m_audioFile.techInfo().audioChannels();
 647
 648                 for(int i = 0; supportedChannels[i]; i++)
 649                 {
 650                         if(supportedChannels[i] == channels)
 651                         {
 652                                 requiresDownmix = false;
 653                                 break;
 654                         }
 655                 }
 656
 657                 if(requiresDownmix)
 658                 {
 659                         m_filters.append(new DownmixFilter());
 660                 }
 661         }
 662 }
 663
 664 ////////////////////////////////////////////////////////////
 665 // PUBLIC FUNCTIONS
 666 ////////////////////////////////////////////////////////////
 667
 668 void ProcessThread::addFilter(AbstractFilter *filter)
 669 {
 670         m_filters.append(filter);
 671 }
 672
 673 void ProcessThread::setRenamePattern(const QString &pattern)
 674 {
 675         QString newPattern = pattern.simplified();
 676         if(!newPattern.isEmpty()) m_renamePattern = newPattern;
 677 }
 678
 679 void ProcessThread::setOverwriteMode(const bool &bSkipExistingFile, const bool &bReplacesExisting)
 680 {
 681         if(bSkipExistingFile && bReplacesExisting)
 682         {
 683                 qWarning("Inconsistent overwrite flags -> reverting to default!");
 684                 m_overwriteMode = OverwriteMode_KeepBoth;
 685         }
 686         else
 687         {
 688                 m_overwriteMode = OverwriteMode_KeepBoth;
 689                 if(bSkipExistingFile) m_overwriteMode = OverwriteMode_SkipExisting;
 690                 if(bReplacesExisting) m_overwriteMode = OverwriteMode_Overwrite;
 691         }
 692 }
 693
 694 ////////////////////////////////////////////////////////////
 695 // EVENTS
 696 ////////////////////////////////////////////////////////////
 697
 698 /*NONE*/