void DisplayIop::engine( int y, int x, int r, const DD::Image::ChannelSet &channels, DD::Image::Row &row )
{
Channel outputChannels[4] = { Chan_Red, Chan_Green, Chan_Blue, Chan_Alpha };
const char *inputChannels[] = { "R", "G", "B", "A", nullptr };
const ImagePrimitive *image = nullptr;
Box2i inputDataWindow;
Box2i inputDisplayWindow;
if( firstDisplayIop()->m_driver )
{
image = firstDisplayIop()->m_driver->image().get();
inputDataWindow = image->getDataWindow();
inputDisplayWindow = image->getDisplayWindow();
}
int i = 0;
while( inputChannels[i] )
{
const FloatVectorData *inputData = image ? image->getChannel<float>( inputChannels[i] ) : nullptr;
if( inputData )
{
float *output = row.writable( outputChannels[i] ) + x;
// remap coordinate relative to our data window. nuke images have pixel origin at bottom,
// cortex images have pixel origin at top.
V2i pDataWindow = V2i( x, inputDisplayWindow.max.y - y ) - inputDataWindow.min;
const float *input = &((inputData->readable())[pDataWindow.y*(inputDataWindow.size().x+1) + pDataWindow.x]);
memcpy( output, input, (r-x) * sizeof( float ) );
}
else
{
row.erase( outputChannels[i] );
}
i++;
}
}
// See Saturation::pixel_engine for a well-commented example.
// Note that this is copied by others (OCIODisplay)
void OCIOFileTransform::pixel_engine(
const DD::Image::Row& in,
int /* rowY unused */, int rowX, int rowXBound,
DD::Image::ChannelMask outputChannels,
DD::Image::Row& out)
{
int rowWidth = rowXBound - rowX;
DD::Image::ChannelSet done;
foreach (requestedChannel, outputChannels)
{
// Skip channels which had their trios processed already,
if (done & requestedChannel)
{
continue;
}
// Pass through channels which are not selected for processing
// and non-rgb channels.
if (colourIndex(requestedChannel) >= 3)
{
out.copy(in, requestedChannel, rowX, rowXBound);
continue;
}
DD::Image::Channel rChannel = DD::Image::brother(requestedChannel, 0);
DD::Image::Channel gChannel = DD::Image::brother(requestedChannel, 1);
DD::Image::Channel bChannel = DD::Image::brother(requestedChannel, 2);
done += rChannel;
done += gChannel;
done += bChannel;
const float *rIn = in[rChannel] + rowX;
const float *gIn = in[gChannel] + rowX;
const float *bIn = in[bChannel] + rowX;
float *rOut = out.writable(rChannel) + rowX;
float *gOut = out.writable(gChannel) + rowX;
float *bOut = out.writable(bChannel) + rowX;
// OCIO modifies in-place
// Note: xOut can equal xIn in some circumstances, such as when the
// 'Black' (throwaway) scanline is uses. We thus must guard memcpy,
// which does not allow for overlapping regions.
if (rOut != rIn) memcpy(rOut, rIn, sizeof(float)*rowWidth);
if (gOut != gIn) memcpy(gOut, gIn, sizeof(float)*rowWidth);
if (bOut != bIn) memcpy(bOut, bIn, sizeof(float)*rowWidth);
try
{
OCIO::PlanarImageDesc img(rOut, gOut, bOut, NULL, rowWidth, /*height*/ 1);
m_processor->apply(img);
}
catch(OCIO::Exception &e)
{
error(e.what());
}
}
}
// See Saturation::pixel_engine for a well-commented example.
// Note that this is copied by others (OCIODisplay)
void OCIOFileTransform::pixel_engine(
const DD::Image::Row& in,
int /* rowY unused */, int rowX, int rowXBound,
DD::Image::ChannelMask outputChannels,
DD::Image::Row& out)
{
int rowWidth = rowXBound - rowX;
DD::Image::ChannelSet done;
foreach (requestedChannel, outputChannels)
{
// Skip channels which had their trios processed already,
if (done & requestedChannel)
{
continue;
}
// Pass through channels which are not selected for processing
// and non-rgb channels.
if (!(layersToProcess & requestedChannel) || colourIndex(requestedChannel) >= 3)
{
out.copy(in, requestedChannel, rowX, rowXBound);
continue;
}
DD::Image::Channel rChannel = DD::Image::brother(requestedChannel, 0);
DD::Image::Channel gChannel = DD::Image::brother(requestedChannel, 1);
DD::Image::Channel bChannel = DD::Image::brother(requestedChannel, 2);
done += rChannel;
done += gChannel;
done += bChannel;
const float *rIn = in[rChannel] + rowX;
const float *gIn = in[gChannel] + rowX;
const float *bIn = in[bChannel] + rowX;
float *rOut = out.writable(rChannel) + rowX;
float *gOut = out.writable(gChannel) + rowX;
float *bOut = out.writable(bChannel) + rowX;
// OCIO modifies in-place
memcpy(rOut, rIn, sizeof(float)*rowWidth);
memcpy(gOut, gIn, sizeof(float)*rowWidth);
memcpy(bOut, bIn, sizeof(float)*rowWidth);
try
{
OCIO::PlanarImageDesc img(rOut, gOut, bOut, rowWidth, /*height*/ 1);
processor->apply(img);
}
catch(OCIO::Exception &e)
{
error(e.what());
}
}
}
void nuke_ld_3de4_base::engine(int y,int x,int r,DD::Image::ChannelMask channels,DD::Image::Row& outrow)
{
if(!input(0))
{ return; }
int w = format().w();
int h = format().h();
if((w <= 0) | (h <= 0))
{ return; }
double inv_w = 1.0 / w;
double inv_h = 1.0 / h;
// We construct (x_s,y_s) in a way, so that the image area is mapped to the unit interval [0,1]^2,
// which is required by our 3DE4 lens distortion plugin class. Nuke's coordinates are pixel based,
// (0,0) is the left lower corner of the left lower pixel, while (1,1) is the right upper corner
// of that pixel. The center of any pixel (ix,iy) is (ix+0.5,iy+0.5), so we add 0.5 here.
double y_s = (0.5 + y) * inv_h;
// Determine bounding box and write down results.
vector<ldpk::vec2d> pos;
// Reserve, so that push_back is performant.
pos.reserve(r - x);
// Box for "lock the tile".
DD::Image::Box box;
for(int i = x;i < r;++i)
{
// We don't forget shifting by (half,half)!
double x_s = (0.5 + i) * inv_w;
double x_d,y_d;
// Image processing, reversed mapping. Weave in 3DE4's field of view.
if(_knob_direction == undistort)
{ _ldm->distort(map_in_fov_x(x_s),map_in_fov_y(y_s),x_d,y_d); }
else
{ _ldm->undistort(map_in_fov_x(x_s),map_in_fov_y(y_s),x_d,y_d); }
// The result already contains the (half,half) shift. Reformulate in Nuke's coordinates. Weave "out" 3DE4's field of view.
double px = map_out_fov_x(x_d) * w;
double py = map_out_fov_y(y_d) * h;
// Build the box for "lock the tile..."
if(i == x)
{ box = DD::Image::Box(int(floor(px)),int(floor(py)),int(ceil(px)),int(ceil(py))); }
else
{ box.merge(int(floor(px)),int(floor(py)),int(ceil(px)),int(ceil(py))); }
// We store the results.
pos.push_back(ldpk::vec2d(px,py));
}
// Add margin for reconstruction filter. Cubic will need two pixels more, others maybe three.
box.pad(3);
// Transfer the stored result. We set pixels x to r in outrow.
// Begin extension by David Cattermole and Ben Dickson, RSP. Thank you!
// Minor changes added by SDV for version 1.9.1.
if(_knob_output_mode == OUTPUT_STMAP)
{
// Output source pixel coordinates in format compatible with STMap
double inv_w0 = 1.0 / input0().format().width();
double inv_h0 = 1.0 / input0().format().height();
for(int i = 0;i < pos.size();++i)
{
foreach(z,channels)
{
if(z == DD::Image::Chan_Red)
{ outrow.writable(z)[i + x] = float(pos[i][0] * inv_w0); }
else if(z == DD::Image::Chan_Green)
{ outrow.writable(z)[i + x] = float(pos[i][1] * inv_h0); }
else
{ outrow.writable(z)[i + x] = 0.0; }
}
}
}