// 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());
}
}
}