Esempio n. 1
0
void Event::setSndFile(MusECore::SndFileR& sf) 
{ 
  if(ev) ev->setSndFile(sf);   
  
  #ifdef USE_SAMPLERATE
  if(_audConv)
  { 
    if(!sf.isNull())
      _audConv->setChannels(sf.channels());
  }
  else
  {
    if(ev && !sf.isNull())
      _audConv = new SRCAudioConverter(ev->sndFile().channels(), SRC_SINC_MEDIUM_QUALITY);
  }
  #endif
}
Esempio n. 2
0
void WaveView::pdraw(QPainter& p, const QRect& rr)
      {
      int x1 = rr.x();
      int x2 = rr.right() + 1;
      if (x1 < 0)
            x1 = 0;
      if (x2 > width())
            x2 = width();
      int hh = height();
      int h  = hh/2;
      int y  = rr.y() + h;

      // Added by T356.
      int xScale = xmag;
      if (xScale < 0)
            xScale = -xScale;
      
      for (MusECore::iPart ip = editor->parts()->begin(); ip != editor->parts()->end(); ++ip) {
            MusECore::WavePart* wp = (MusECore::WavePart*)(ip->second);
            int channels = wp->track()->channels();
            int px = wp->frame();

            for (MusECore::ciEvent e = wp->events().begin(); e != wp->events().end(); ++e) {
                  const MusECore::Event event&  = e->second;
                  if (event.empty())
                        continue;
                  MusECore::SndFileR f = event.sndFile();
                  if(f.isNull())
                        continue;
                  
                  unsigned peoffset = px + event.frame() - event.spos();
                  int sx, ex;
                  
                  sx = event.frame() + px + xScale/2;
                  ex = sx + event.lenFrame();
                  sx = sx / xScale - xpos;
                  ex = ex / xScale - xpos;

                  if (sx < x1)
                        sx = x1;
                  if (ex > x2)
                        ex = x2;

                  int pos = (xpos + sx) * xScale + event.spos() - event.frame() - px;
                  
                  //printf("pos=%d xpos=%d sx=%d ex=%d xScale=%d event.spos=%d event.frame=%d px=%d\n",   
                  //      pos, xpos, sx, ex, xScale, event.spos(), event.frame(), px);
                  
                  h       = hh / (channels * 2);
                  int cc  = hh % (channels * 2) ? 0 : 1;

                  for (int i = sx; i < ex; i++) {
                        y  = rr.y() + h;
                        MusECore::SampleV sa[f.channels()];
                        f.read(sa, xScale, pos);
                        pos += xScale;
                        if (pos < event.spos())
                              continue;

                        int selectionStartPos = selectionStart - peoffset; // Offset transformed to event coords
                        int selectionStopPos  = selectionStop  - peoffset;

                        for (int k = 0; k < channels; ++k) {
                              int kk = k % f.channels();
                              int peak = (sa[kk].peak * (h - 1)) / yScale;
                              int rms  = (sa[kk].rms  * (h - 1)) / yScale;
                              if (peak > h)
                                    peak = h;
                              if (rms > h)
                                    rms = h;
                              QColor peak_color = QColor(Qt::darkGray);
                              QColor rms_color  = QColor(Qt::black);
                              
                              // Changed by T356. Reduces (but not eliminates) drawing artifacts.
                              //if (pos > selectionStartPos && pos < selectionStopPos) {
                              if (pos > selectionStartPos && pos <= selectionStopPos) {
                                    
                                    peak_color = QColor(Qt::lightGray);
                                    rms_color  = QColor(Qt::white);
                                    // Draw inverted
                                    p.setPen(QColor(Qt::black));
                                    p.drawLine(i, y - h + cc, i, y + h - cc );
                                    }
                              p.setPen(peak_color);
                              p.drawLine(i, y - peak - cc, i, y + peak);
                              p.setPen(rms_color);
                              p.drawLine(i, y - rms - cc, i, y + rms);
                              y  += 2 * h;
                              }
                        }
                  }
            }
      View::pdraw(p, rr);
      }