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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2011 Blender Foundation. */
#include "MEM_guardedalloc.h"
#include "COM_DespeckleOperation.h"
namespace blender::compositor {
DespeckleOperation::DespeckleOperation()
{
this->add_input_socket(DataType::Color);
this->add_input_socket(DataType::Value);
this->add_output_socket(DataType::Color);
this->set_canvas_input_index(0);
input_operation_ = nullptr;
flags_.complex = true;
}
void DespeckleOperation::init_execution()
{
input_operation_ = this->get_input_socket_reader(0);
input_value_operation_ = this->get_input_socket_reader(1);
}
void DespeckleOperation::deinit_execution()
{
input_operation_ = nullptr;
input_value_operation_ = nullptr;
}
BLI_INLINE int color_diff(const float a[3], const float b[3], const float threshold)
{
return ((fabsf(a[0] - b[0]) > threshold) || (fabsf(a[1] - b[1]) > threshold) ||
(fabsf(a[2] - b[2]) > threshold));
}
void DespeckleOperation::execute_pixel(float output[4], int x, int y, void * /*data*/)
{
float w = 0.0f;
float color_org[4];
float color_mid[4];
float color_mid_ok[4];
float in1[4];
int x1 = x - 1;
int x2 = x;
int x3 = x + 1;
int y1 = y - 1;
int y2 = y;
int y3 = y + 1;
CLAMP(x1, 0, get_width() - 1);
CLAMP(x2, 0, get_width() - 1);
CLAMP(x3, 0, get_width() - 1);
CLAMP(y1, 0, get_height() - 1);
CLAMP(y2, 0, get_height() - 1);
CLAMP(y3, 0, get_height() - 1);
float value[4];
input_value_operation_->read(value, x2, y2, nullptr);
// const float mval = 1.0f - value[0];
input_operation_->read(color_org, x2, y2, nullptr);
#define TOT_DIV_ONE 1.0f
#define TOT_DIV_CNR (float)M_SQRT1_2
#define WTOT (TOT_DIV_ONE * 4 + TOT_DIV_CNR * 4)
#define COLOR_ADD(fac) \
{ \
madd_v4_v4fl(color_mid, in1, fac); \
if (color_diff(in1, color_org, threshold_)) { \
w += fac; \
madd_v4_v4fl(color_mid_ok, in1, fac); \
} \
}
zero_v4(color_mid);
zero_v4(color_mid_ok);
input_operation_->read(in1, x1, y1, nullptr);
COLOR_ADD(TOT_DIV_CNR)
input_operation_->read(in1, x2, y1, nullptr);
COLOR_ADD(TOT_DIV_ONE)
input_operation_->read(in1, x3, y1, nullptr);
COLOR_ADD(TOT_DIV_CNR)
input_operation_->read(in1, x1, y2, nullptr);
COLOR_ADD(TOT_DIV_ONE)
#if 0
input_operation_->read(in2, x2, y2, nullptr);
madd_v4_v4fl(color_mid, in2, filter_[4]);
#endif
input_operation_->read(in1, x3, y2, nullptr);
COLOR_ADD(TOT_DIV_ONE)
input_operation_->read(in1, x1, y3, nullptr);
COLOR_ADD(TOT_DIV_CNR)
input_operation_->read(in1, x2, y3, nullptr);
COLOR_ADD(TOT_DIV_ONE)
input_operation_->read(in1, x3, y3, nullptr);
COLOR_ADD(TOT_DIV_CNR)
mul_v4_fl(color_mid, 1.0f / (4.0f + (4.0f * (float)M_SQRT1_2)));
// mul_v4_fl(color_mid, 1.0f / w);
if ((w != 0.0f) && ((w / WTOT) > (threshold_neighbor_)) &&
color_diff(color_mid, color_org, threshold_)) {
mul_v4_fl(color_mid_ok, 1.0f / w);
interp_v4_v4v4(output, color_org, color_mid_ok, value[0]);
}
else {
copy_v4_v4(output, color_org);
}
#undef TOT_DIV_ONE
#undef TOT_DIV_CNR
#undef WTOT
#undef COLOR_ADD
}
bool DespeckleOperation::determine_depending_area_of_interest(rcti *input,
ReadBufferOperation *read_operation,
rcti *output)
{
rcti new_input;
int addx = 2; //(filter_width_ - 1) / 2 + 1;
int addy = 2; //(filter_height_ - 1) / 2 + 1;
new_input.xmax = input->xmax + addx;
new_input.xmin = input->xmin - addx;
new_input.ymax = input->ymax + addy;
new_input.ymin = input->ymin - addy;
return NodeOperation::determine_depending_area_of_interest(&new_input, read_operation, output);
}
void DespeckleOperation::get_area_of_interest(const int input_idx,
const rcti &output_area,
rcti &r_input_area)
{
switch (input_idx) {
case IMAGE_INPUT_INDEX: {
const int add_x = 2; //(filter_width_ - 1) / 2 + 1;
const int add_y = 2; //(filter_height_ - 1) / 2 + 1;
r_input_area.xmin = output_area.xmin - add_x;
r_input_area.xmax = output_area.xmax + add_x;
r_input_area.ymin = output_area.ymin - add_y;
r_input_area.ymax = output_area.ymax + add_y;
break;
}
case FACTOR_INPUT_INDEX: {
r_input_area = output_area;
break;
}
}
}
void DespeckleOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
const MemoryBuffer *image = inputs[IMAGE_INPUT_INDEX];
const int last_x = get_width() - 1;
const int last_y = get_height() - 1;
for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
const int x1 = MAX2(it.x - 1, 0);
const int x2 = it.x;
const int x3 = MIN2(it.x + 1, last_x);
const int y1 = MAX2(it.y - 1, 0);
const int y2 = it.y;
const int y3 = MIN2(it.y + 1, last_y);
float w = 0.0f;
const float *color_org = it.in(IMAGE_INPUT_INDEX);
float color_mid[4];
float color_mid_ok[4];
const float *in1 = nullptr;
#define TOT_DIV_ONE 1.0f
#define TOT_DIV_CNR (float)M_SQRT1_2
#define WTOT (TOT_DIV_ONE * 4 + TOT_DIV_CNR * 4)
#define COLOR_ADD(fac) \
{ \
madd_v4_v4fl(color_mid, in1, fac); \
if (color_diff(in1, color_org, threshold_)) { \
w += fac; \
madd_v4_v4fl(color_mid_ok, in1, fac); \
} \
}
zero_v4(color_mid);
zero_v4(color_mid_ok);
in1 = image->get_elem(x1, y1);
COLOR_ADD(TOT_DIV_CNR)
in1 = image->get_elem(x2, y1);
COLOR_ADD(TOT_DIV_ONE)
in1 = image->get_elem(x3, y1);
COLOR_ADD(TOT_DIV_CNR)
in1 = image->get_elem(x1, y2);
COLOR_ADD(TOT_DIV_ONE)
#if 0
const float* in2 = image->get_elem(x2, y2);
madd_v4_v4fl(color_mid, in2, filter_[4]);
#endif
in1 = image->get_elem(x3, y2);
COLOR_ADD(TOT_DIV_ONE)
in1 = image->get_elem(x1, y3);
COLOR_ADD(TOT_DIV_CNR)
in1 = image->get_elem(x2, y3);
COLOR_ADD(TOT_DIV_ONE)
in1 = image->get_elem(x3, y3);
COLOR_ADD(TOT_DIV_CNR)
mul_v4_fl(color_mid, 1.0f / (4.0f + (4.0f * (float)M_SQRT1_2)));
// mul_v4_fl(color_mid, 1.0f / w);
if ((w != 0.0f) && ((w / WTOT) > (threshold_neighbor_)) &&
color_diff(color_mid, color_org, threshold_)) {
const float factor = *it.in(FACTOR_INPUT_INDEX);
mul_v4_fl(color_mid_ok, 1.0f / w);
interp_v4_v4v4(it.out, color_org, color_mid_ok, factor);
}
else {
copy_v4_v4(it.out, color_org);
}
#undef TOT_DIV_ONE
#undef TOT_DIV_CNR
#undef WTOT
#undef COLOR_ADD
}
}
} // namespace blender::compositor
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