Esempio n. 1
0
/* set up and run a processor */
void
CrossFadePlugin::setupAndProcess(OFX::ImageBlenderBase &processor, const OFX::RenderArguments &args)
{
  // get a dst image
  std::auto_ptr<OFX::Image>  dst(dstClip_->fetchImage(args.time));
  OFX::BitDepthEnum          dstBitDepth    = dst->getPixelDepth();
  OFX::PixelComponentEnum    dstComponents  = dst->getPixelComponents();

  // fetch the two source images
  std::auto_ptr<OFX::Image> fromImg(fromClip_->fetchImage(args.time));
  std::auto_ptr<OFX::Image> toImg(toClip_->fetchImage(args.time));

  // make sure bit depths are sane
  if(fromImg.get()) checkComponents(*fromImg, dstBitDepth, dstComponents);
  if(toImg.get()) checkComponents(*toImg, dstBitDepth, dstComponents);

  // get the transition value
  float blend = (float)transition_->getValueAtTime(args.time);

  // set the images
  processor.setDstImg(dst.get());
  processor.setFromImg(fromImg.get());
  processor.setToImg(toImg.get());

  // set the render window
  processor.setRenderWindow(args.renderWindow);

  // set the scales
  processor.setBlend(blend);

  // Call the base class process member, this will call the derived templated process code
  processor.process();
}
Esempio n. 2
0
/* set up and run a processor */
void
RetimerPlugin::setupAndProcess(OFX::ImageBlenderBase &processor, const OFX::RenderArguments &args)
{
    // get a dst image
    std::auto_ptr<OFX::Image>  dst(dstClip_->fetchImage(args.time));
    OFX::BitDepthEnum          dstBitDepth    = dst->getPixelDepth();
    OFX::PixelComponentEnum    dstComponents  = dst->getPixelComponents();

    // figure the frame we should be retiming from
    double sourceTime;

    if(getContext() == OFX::eContextRetimer) {
        // the host is specifying it, so fetch it from the "sourceTime" pseudo-param
        sourceTime = sourceTime_->getValueAtTime(args.time);
    }
    else {
        // we have our own param, which is a speed, so we integrate it to get the time we want
        sourceTime = speed_->integrate(0, args.time);
    }

    // figure the two images we are blending between
    double fromTime, toTime;
    double blend;

    if(args.fieldToRender == OFX::eFieldNone) {
        // unfielded, easy peasy
        fromTime = floor(sourceTime);
        toTime = fromTime + 1;
        blend = sourceTime - fromTime;
    }
    else {
        // Fielded clips, pook. We are rendering field doubled images,
        // and so need to blend between fields, not frames.
        double frac = sourceTime - floor(sourceTime);
        if(frac < 0.5) {
            // need to go between the first and second fields of this frame
            fromTime = floor(sourceTime); // this will get the first field
            toTime   = fromTime + 0.5;    // this will get the second field of the same frame
            blend    = frac * 2.0;        // and the blend is between those two
        }
        else { // frac > 0.5
            fromTime = floor(sourceTime) + 0.5; // this will get the second field of this frame
            toTime   = floor(sourceTime) + 1.0; // this will get the first field of the next frame
            blend    = (frac - 0.5) * 2.0;
        }
    }

    // fetch the two source images
    std::auto_ptr<OFX::Image> fromImg(srcClip_->fetchImage(fromTime));
    std::auto_ptr<OFX::Image> toImg(srcClip_->fetchImage(toTime));

    // make sure bit depths are sane
    if(fromImg.get()) checkComponents(*fromImg, dstBitDepth, dstComponents);
    if(toImg.get()) checkComponents(*toImg, dstBitDepth, dstComponents);

    // set the images
    processor.setDstImg(dst.get());
    processor.setFromImg(fromImg.get());
    processor.setToImg(toImg.get());

    // set the render window
    processor.setRenderWindow(args.renderWindow);

    // set the blend between
    processor.setBlend((float)blend);

    // Call the base class process member, this will call the derived templated process code
    processor.process();
}