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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2011 Blender Foundation. */
#include "COM_ChangeHSVOperation.h"
namespace blender::compositor {
ChangeHSVOperation::ChangeHSVOperation()
{
this->add_input_socket(DataType::Color);
this->add_input_socket(DataType::Value);
this->add_input_socket(DataType::Value);
this->add_input_socket(DataType::Value);
this->add_output_socket(DataType::Color);
input_operation_ = nullptr;
flags_.can_be_constant = true;
}
void ChangeHSVOperation::init_execution()
{
input_operation_ = get_input_socket_reader(0);
hue_operation_ = get_input_socket_reader(1);
saturation_operation_ = get_input_socket_reader(2);
value_operation_ = get_input_socket_reader(3);
}
void ChangeHSVOperation::deinit_execution()
{
input_operation_ = nullptr;
hue_operation_ = nullptr;
saturation_operation_ = nullptr;
value_operation_ = nullptr;
}
void ChangeHSVOperation::execute_pixel_sampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
float input_color1[4];
float hue[4], saturation[4], value[4];
input_operation_->read_sampled(input_color1, x, y, sampler);
hue_operation_->read_sampled(hue, x, y, sampler);
saturation_operation_->read_sampled(saturation, x, y, sampler);
value_operation_->read_sampled(value, x, y, sampler);
output[0] = input_color1[0] + (hue[0] - 0.5f);
if (output[0] > 1.0f) {
output[0] -= 1.0f;
}
else if (output[0] < 0.0f) {
output[0] += 1.0f;
}
output[1] = input_color1[1] * saturation[0];
output[2] = input_color1[2] * value[0];
output[3] = input_color1[3];
}
void ChangeHSVOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
const float *color = it.in(0);
const float hue = *it.in(1);
it.out[0] = color[0] + (hue - 0.5f);
if (it.out[0] > 1.0f) {
it.out[0] -= 1.0f;
}
else if (it.out[0] < 0.0f) {
it.out[0] += 1.0f;
}
const float saturation = *it.in(2);
const float value = *it.in(3);
it.out[1] = color[1] * saturation;
it.out[2] = color[2] * value;
it.out[3] = color[3];
}
}
} // namespace blender::compositor
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