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/**
* OpenColorIO LogConvert Iop.
*/
#include "OCIOLogConvert.h"
namespace OCIO = OCIO_NAMESPACE;
#include <string>
#include <sstream>
#include <stdexcept>
#include <DDImage/Channel.h>
#include <DDImage/PixelIop.h>
#include <DDImage/NukeWrapper.h>
#include <DDImage/Row.h>
#include <DDImage/Knobs.h>
const char* OCIOLogConvert::modes[] = {
"log to lin", "lin to log", 0
};
OCIOLogConvert::OCIOLogConvert(Node *n) : DD::Image::PixelIop(n)
{
modeindex = 0;
}
OCIOLogConvert::~OCIOLogConvert()
{
}
void OCIOLogConvert::knobs(DD::Image::Knob_Callback f)
{
Enumeration_knob(f, &modeindex, modes, "operation", "operation");
DD::Image::SetFlags(f, DD::Image::Knob::ALWAYS_SAVE);
}
void OCIOLogConvert::_validate(bool for_real)
{
try
{
OCIO::ConstConfigRcPtr config = OCIO::GetCurrentConfig();
const char * src = 0;
const char * dst = 0;
if(modeindex == 0)
{
src = OCIO::ROLE_COMPOSITING_LOG;
dst = OCIO::ROLE_SCENE_LINEAR;
}
else
{
src = OCIO::ROLE_SCENE_LINEAR;
dst = OCIO::ROLE_COMPOSITING_LOG;
}
processor = config->getProcessor(src, dst);
}
catch(OCIO::Exception &e)
{
error(e.what());
return;
}
if(processor->isNoOp())
{
set_out_channels(DD::Image::Mask_None); // prevents engine() from being called
} else {
set_out_channels(DD::Image::Mask_All);
}
DD::Image::PixelIop::_validate(for_real);
}
// Note that this is copied by others (OCIODisplay)
void OCIOLogConvert::in_channels(int /* n unused */, DD::Image::ChannelSet& mask) const
{
DD::Image::ChannelSet done;
foreach(c, mask)
{
if (DD::Image::colourIndex(c) < 3 && !(done & c))
{
done.addBrothers(c, 3);
}
}
mask += done;
}
// See Saturation::pixel_engine for a well-commented example.
// Note that this is copied by others (OCIODisplay)
void OCIOLogConvert::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);
processor->apply(img);
}
catch(OCIO::Exception &e)
{
error(e.what());
}
}
}
const DD::Image::Op::Description OCIOLogConvert::description("OCIOLogConvert", build);
const char* OCIOLogConvert::Class() const
{
return description.name;
}
const char* OCIOLogConvert::displayName() const
{
return description.name;
}
const char* OCIOLogConvert::node_help() const
{
// TODO more detailed help text
return "Use OpenColorIO to convert from SCENE_LINEAR to COMPOSITING_LOG (or back).";
}
DD::Image::Op* build(Node *node)
{
DD::Image::NukeWrapper *op = new DD::Image::NukeWrapper(new OCIOLogConvert(node));
op->channels(DD::Image::Mask_RGB);
return op;
}
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