예제 #1
0
파일: Mix.cpp 프로젝트: ruthmagnus/audacity
bool MixAndRender(TrackList *tracks, TrackFactory *trackFactory,
                  double rate, sampleFormat format,
                  double startTime, double endTime,
                  WaveTrack **newLeft, WaveTrack **newRight)
{
   // This function was formerly known as "Quick Mix".  It takes one or
   // more tracks as input; of all tracks that are selected, it mixes
   // them together, applying any envelopes, amplitude gain, panning,
   // and real-time effects in the process.  The resulting pair of
   // tracks (stereo) are "rendered" and have no effects, gain, panning,
   // or envelopes.

   WaveTrack **waveArray;
   Track *t;
   int numWaves = 0;
   int numMono = 0;
   bool mono = false;
   int w;

   TrackListIterator iter(tracks);

   t = iter.First();
   while (t) {
      if (t->GetSelected() && t->GetKind() == Track::Wave) {
         numWaves++;
         float pan = ((WaveTrack*)t)->GetPan();
         if (t->GetChannel() == Track::MonoChannel && pan == 0)
            numMono++;
      }
      t = iter.Next();
   }

   if (numMono == numWaves)
      mono = true;

   double totalTime = 0.0;

   waveArray = new WaveTrack *[numWaves];
   w = 0;
   t = iter.First();
   while (t) {
      if (t->GetSelected() && t->GetKind() == Track::Wave) {
         waveArray[w++] = (WaveTrack *) t;
         if (t->GetEndTime() > totalTime)
            totalTime = t->GetEndTime();
      }
      t = iter.Next();
   }

   WaveTrack *mixLeft = trackFactory->NewWaveTrack(format, rate);
   mixLeft->SetName(_("Mix"));
   WaveTrack *mixRight = 0;
   if (mono) {
      mixLeft->SetChannel(Track::MonoChannel);
   }
   else {
      mixRight = trackFactory->NewWaveTrack(format, rate);
      mixRight->SetName(_("Mix"));
      mixLeft->SetChannel(Track::LeftChannel);
      mixRight->SetChannel(Track::RightChannel);
      mixLeft->SetLinked(true);
      mixRight->SetTeamed(true);
   }

   int maxBlockLen = mixLeft->GetIdealBlockSize();

   if (startTime == endTime) {
      startTime = 0.0;
      endTime = totalTime;
   }

   Mixer *mixer = new Mixer(numWaves, waveArray, tracks->GetTimeTrack(),
                            startTime, endTime, mono ? 1 : 2, maxBlockLen, false,
                            rate, format);

   wxYield();
   GetActiveProject()->ProgressShow(_NoAcc("&Mix and Render"),
                                    _("Mixing and rendering tracks"));
   wxBusyCursor busy;
   
   bool cancelling = false;
   while(!cancelling) {
      sampleCount blockLen = mixer->Process(maxBlockLen);

      if (blockLen == 0)
         break;

      if (mono) {
         samplePtr buffer = mixer->GetBuffer();
         mixLeft->Append(buffer, format, blockLen);
      }
      else {
         samplePtr buffer;
         buffer = mixer->GetBuffer(0);
         mixLeft->Append(buffer, format, blockLen);
         buffer = mixer->GetBuffer(1);
         mixRight->Append(buffer, format, blockLen);
      }

      int progressvalue = int (1000 * (mixer->MixGetCurrentTime() / totalTime));
      cancelling = !GetActiveProject()->ProgressUpdate(progressvalue);
   }

   GetActiveProject()->ProgressHide();

   mixLeft->Flush();
   *newLeft = mixLeft;
   if (!mono) {
      mixRight->Flush();
      *newRight = mixRight;
   }

#if 0
   int elapsedMS = wxGetElapsedTime();
   double elapsedTime = elapsedMS * 0.001;
   double maxTracks = totalTime / (elapsedTime / numWaves);

   // Note: these shouldn't be translated - they're for debugging
   // and profiling only.
   printf("      Tracks: %d\n", numWaves);
   printf("  Mix length: %f sec\n", totalTime);
   printf("Elapsed time: %f sec\n", elapsedTime);
   printf("Max number of tracks to mix in real time: %f\n", maxTracks);
#endif

   delete[] waveArray;
   delete mixer;

   return true;
}
예제 #2
0
파일: Mix.cpp 프로젝트: andreipaga/audacity
bool QuickMix(TrackList *tracks, DirManager *dirManager,
              double rate, sampleFormat format)
{
   WaveTrack **waveArray;
   VTrack *t;
   int numWaves = 0;
   int numLeft = 0;
   int numRight = 0;
   int numMono = 0;
   bool mono = false;
   int w;

   TrackListIterator iter(tracks);

   t = iter.First();
   while (t) {
      if (t->GetSelected() && t->GetKind() == VTrack::Wave) {
         numWaves++;
         switch (t->GetChannel()) {
         case VTrack::MonoChannel:
            numLeft++;
            numRight++;
            numMono++;
            break;
         case VTrack::LeftChannel:
            numLeft++;
            break;
         case VTrack::RightChannel:
            numRight++;
            break;
         }
      }
      t = iter.Next();
   }

   if (numMono == numWaves || numLeft == numWaves || numRight == numWaves)
      mono = true;

   double totalTime = 0.0;

   waveArray = new WaveTrack *[numWaves];
   w = 0;
   t = iter.First();
   while (t) {
      if (t->GetSelected() && t->GetKind() == VTrack::Wave) {
         waveArray[w++] = (WaveTrack *) t;
         if (t->GetMaxLen() > totalTime)
            totalTime = t->GetMaxLen();
      }
      t = iter.Next();
   }

   WaveTrack *mixLeft = new WaveTrack(dirManager);
   mixLeft->SetSampleFormat(format);
   mixLeft->SetRate(rate);
   mixLeft->SetChannel(VTrack::MonoChannel);
   mixLeft->SetName(_("Mix"));
   WaveTrack *mixRight = 0;
   if (!mono) {
      mixRight = new WaveTrack(dirManager);
      mixRight->SetSampleFormat(format);
      mixRight->SetRate(rate);
      mixRight->SetName(_("Mix"));
      mixLeft->SetChannel(VTrack::LeftChannel);
      mixRight->SetChannel(VTrack::RightChannel);
      mixLeft->SetLinked(true);
   }

   int maxBlockLen = mixLeft->GetIdealBlockSize();
   double maxBlockTime = maxBlockLen / mixLeft->GetRate();

   Mixer *mixer = new Mixer(mono ? 1 : 2, maxBlockLen, false,
                            rate, format);

   wxProgressDialog *progress = NULL;
   wxYield();
   wxStartTimer();
   wxBusyCursor busy;

   double tt = 0.0;
   while (tt < totalTime) {

      double blockTime = maxBlockTime;
      if (tt + blockTime > totalTime)
         blockTime = totalTime - tt;
      int blockLen = int (blockTime * mixLeft->GetRate());

      mixer->Clear();

      for (int i = 0; i < numWaves; i++) {
         if (mono)
            mixer->MixMono(waveArray[i], tt, tt + blockTime);
         else {
            switch (waveArray[i]->GetChannel()) {
            case VTrack::LeftChannel:
               mixer->MixLeft(waveArray[i], tt, tt + blockTime);
               break;
            case VTrack::RightChannel:
               mixer->MixRight(waveArray[i], tt, tt + blockTime);
               break;
            case VTrack::MonoChannel:
               mixer->MixMono(waveArray[i], tt, tt + blockTime);
               break;
            }
         }
      }

      if (mono) {
         samplePtr buffer = mixer->GetBuffer();
         mixLeft->Append(buffer, format, blockLen);
      } else {
         samplePtr buffer;
         buffer = mixer->GetBuffer(0);
         mixLeft->Append(buffer, format, blockLen);
         buffer = mixer->GetBuffer(1);
         mixRight->Append(buffer, format, blockLen);
      }

      tt += blockTime;

      if (!progress && wxGetElapsedTime(false) > 500) {
         progress =
             new wxProgressDialog(_("Quick Mix"), _("Mixing tracks"), 1000);
      }
      if (progress) {
         int progressvalue = int (1000 * (tt / totalTime));
         progress->Update(progressvalue);
      }
   }

   tracks->Add(mixLeft);
   if (!mono)
      tracks->Add(mixRight);

   delete progress;

   int elapsedMS = wxGetElapsedTime();
   double elapsedTime = elapsedMS * 0.001;
   double maxTracks = totalTime / (elapsedTime / numWaves);

#ifdef __WXGTK__
   printf(_("      Tracks: %d\n"), numWaves);
   printf(_("  Mix length: %f sec\n"), totalTime);
   printf(_("Elapsed time: %f sec\n"), elapsedTime);
   printf(_("Max number of tracks to mix in real time: %f\n"), maxTracks);
#endif

   delete waveArray;
   delete mixer;

   return true;
}
예제 #3
0
//TODO-MB: wouldn't it make more sense to delete the time track after 'mix and render'?
bool MixAndRender(TrackList *tracks, TrackFactory *trackFactory,
                  double rate, sampleFormat format,
                  double startTime, double endTime,
                  WaveTrack **newLeft, WaveTrack **newRight)
{
   // This function was formerly known as "Quick Mix".
   WaveTrack **waveArray;
   Track *t;
   int numWaves = 0; /* number of wave tracks in the selection */
   int numMono = 0;  /* number of mono, centre-panned wave tracks in selection*/
   bool mono = false;   /* flag if output can be mono without loosing anything*/
   bool oneinput = false;  /* flag set to true if there is only one input track
                              (mono or stereo) */
   int w;

   TrackListIterator iter(tracks);
   SelectedTrackListOfKindIterator usefulIter(Track::Wave, tracks);
   // this only iterates tracks which are relevant to this function, i.e.
   // selected WaveTracks. The tracklist is (confusingly) the list of all
   // tracks in the project

   t = iter.First();
   while (t) {
      if (t->GetSelected() && t->GetKind() == Track::Wave) {
         numWaves++;
         float pan = ((WaveTrack*)t)->GetPan();
         if (t->GetChannel() == Track::MonoChannel && pan == 0)
            numMono++;
      }
      t = iter.Next();
   }

   if (numMono == numWaves)
      mono = true;

   /* the next loop will do two things at once:
    * 1. build an array of all the wave tracks were are trying to process
    * 2. determine when the set of WaveTracks starts and ends, in case we
    *    need to work out for ourselves when to start and stop rendering.
    */

   double mixStartTime = 0.0;    /* start time of first track to start */
   bool gotstart = false;  // flag indicates we have found a start time
   double mixEndTime = 0.0;   /* end time of last track to end */
   double tstart, tend;    // start and end times for one track.

   waveArray = new WaveTrack *[numWaves];
   w = 0;
   t = iter.First();

   while (t) {
      if (t->GetSelected() && t->GetKind() == Track::Wave) {
         waveArray[w++] = (WaveTrack *) t;
         tstart = t->GetStartTime();
         tend = t->GetEndTime();
         if (tend > mixEndTime)
            mixEndTime = tend;
         // try and get the start time. If the track is empty we will get 0,
         // which is ambiguous because it could just mean the track starts at
         // the beginning of the project, as well as empty track. The give-away
         // is that an empty track also ends at zero.

         if (tstart != tend) {
            // we don't get empty tracks here
            if (!gotstart) {
               // no previous start, use this one unconditionally
               mixStartTime = tstart;
               gotstart = true;
            } else if (tstart < mixStartTime)
               mixStartTime = tstart;  // have a start, only make it smaller
         }  // end if start and end are different
      }  // end if track is a selected WaveTrack.
      /** @TODO: could we not use a SelectedTrackListOfKindIterator here? */
      t = iter.Next();
   }

   /* create the destination track (new track) */
   if ((numWaves == 1) || ((numWaves == 2) && (usefulIter.First()->GetLink() != NULL)))
      oneinput = true;
   // only one input track (either 1 mono or one linked stereo pair)

   WaveTrack *mixLeft = trackFactory->NewWaveTrack(format, rate);
   if (oneinput)
      mixLeft->SetName(usefulIter.First()->GetName()); /* set name of output track to be the same as the sole input track */
   else
      mixLeft->SetName(_("Mix"));
   mixLeft->SetOffset(mixStartTime);
   WaveTrack *mixRight = 0;
   if (mono) {
      mixLeft->SetChannel(Track::MonoChannel);
   }
   else {
      mixRight = trackFactory->NewWaveTrack(format, rate);
      if (oneinput) {
         if (usefulIter.First()->GetLink() != NULL)   // we have linked track
            mixLeft->SetName(usefulIter.First()->GetLink()->GetName()); /* set name to match input track's right channel!*/
         else
            mixLeft->SetName(usefulIter.First()->GetName());   /* set name to that of sole input channel */
      }
      else
         mixRight->SetName(_("Mix"));
      mixLeft->SetChannel(Track::LeftChannel);
      mixRight->SetChannel(Track::RightChannel);
      mixRight->SetOffset(mixStartTime);
      mixLeft->SetLinked(true);
   }



   int maxBlockLen = mixLeft->GetIdealBlockSize();

   // If the caller didn't specify a time range, use the whole range in which
   // any input track had clips in it.
   if (startTime == endTime) {
      startTime = mixStartTime;
      endTime = mixEndTime;
   }

   Mixer *mixer = new Mixer(numWaves, waveArray,
                            Mixer::WarpOptions(tracks->GetTimeTrack()),
                            startTime, endTime, mono ? 1 : 2, maxBlockLen, false,
                            rate, format);

   ::wxSafeYield();
   ProgressDialog *progress = new ProgressDialog(_("Mix and Render"),
                                                 _("Mixing and rendering tracks"));

   int updateResult = eProgressSuccess;
   while(updateResult == eProgressSuccess) {
      sampleCount blockLen = mixer->Process(maxBlockLen);

      if (blockLen == 0)
         break;

      if (mono) {
         samplePtr buffer = mixer->GetBuffer();
         mixLeft->Append(buffer, format, blockLen);
      }
      else {
         samplePtr buffer;
         buffer = mixer->GetBuffer(0);
         mixLeft->Append(buffer, format, blockLen);
         buffer = mixer->GetBuffer(1);
         mixRight->Append(buffer, format, blockLen);
      }

      updateResult = progress->Update(mixer->MixGetCurrentTime() - startTime, endTime - startTime);
   }

   delete progress;

   mixLeft->Flush();
   if (!mono)
      mixRight->Flush();
   if (updateResult == eProgressCancelled || updateResult == eProgressFailed)
   {
      delete mixLeft;
      if (!mono)
         delete mixRight;
   } else {
      *newLeft = mixLeft;
      if (!mono)
         *newRight = mixRight;

#if 0
   int elapsedMS = wxGetElapsedTime();
   double elapsedTime = elapsedMS * 0.001;
   double maxTracks = totalTime / (elapsedTime / numWaves);

   // Note: these shouldn't be translated - they're for debugging
   // and profiling only.
   printf("      Tracks: %d\n", numWaves);
   printf("  Mix length: %f sec\n", totalTime);
   printf("Elapsed time: %f sec\n", elapsedTime);
   printf("Max number of tracks to mix in real time: %f\n", maxTracks);
#endif
   }

   delete[] waveArray;
   delete mixer;

   return (updateResult == eProgressSuccess || updateResult == eProgressStopped);
}