1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2012 Blender Foundation. */
#include "COM_KeyingBlurOperation.h"
namespace blender::compositor {
KeyingBlurOperation::KeyingBlurOperation()
{
this->add_input_socket(DataType::Value);
this->add_output_socket(DataType::Value);
size_ = 0;
axis_ = BLUR_AXIS_X;
flags_.complex = true;
}
void *KeyingBlurOperation::initialize_tile_data(rcti *rect)
{
void *buffer = get_input_operation(0)->initialize_tile_data(rect);
return buffer;
}
void KeyingBlurOperation::execute_pixel(float output[4], int x, int y, void *data)
{
MemoryBuffer *input_buffer = (MemoryBuffer *)data;
const int buffer_width = input_buffer->get_width();
float *buffer = input_buffer->get_buffer();
int count = 0;
float average = 0.0f;
if (axis_ == 0) {
const int start = MAX2(0, x - size_ + 1), end = MIN2(buffer_width, x + size_);
for (int cx = start; cx < end; cx++) {
int buffer_index = (y * buffer_width + cx);
average += buffer[buffer_index];
count++;
}
}
else {
const int start = MAX2(0, y - size_ + 1), end = MIN2(input_buffer->get_height(), y + size_);
for (int cy = start; cy < end; cy++) {
int buffer_index = (cy * buffer_width + x);
average += buffer[buffer_index];
count++;
}
}
average /= (float)count;
output[0] = average;
}
bool KeyingBlurOperation::determine_depending_area_of_interest(rcti *input,
ReadBufferOperation *read_operation,
rcti *output)
{
rcti new_input;
if (axis_ == BLUR_AXIS_X) {
new_input.xmin = input->xmin - size_;
new_input.ymin = input->ymin;
new_input.xmax = input->xmax + size_;
new_input.ymax = input->ymax;
}
else {
new_input.xmin = input->xmin;
new_input.ymin = input->ymin - size_;
new_input.xmax = input->xmax;
new_input.ymax = input->ymax + size_;
}
return NodeOperation::determine_depending_area_of_interest(&new_input, read_operation, output);
}
void KeyingBlurOperation::get_area_of_interest(const int UNUSED(input_idx),
const rcti &output_area,
rcti &r_input_area)
{
switch (axis_) {
case BLUR_AXIS_X:
r_input_area.xmin = output_area.xmin - size_;
r_input_area.ymin = output_area.ymin;
r_input_area.xmax = output_area.xmax + size_;
r_input_area.ymax = output_area.ymax;
break;
case BLUR_AXIS_Y:
r_input_area.xmin = output_area.xmin;
r_input_area.ymin = output_area.ymin - size_;
r_input_area.xmax = output_area.xmax;
r_input_area.ymax = output_area.ymax + size_;
break;
default:
BLI_assert_msg(0, "Unknown axis");
break;
}
}
void KeyingBlurOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
const MemoryBuffer *input = inputs[0];
BuffersIterator<float> it = output->iterate_with(inputs, area);
int coord_max;
int elem_stride;
std::function<int()> get_current_coord;
switch (axis_) {
case BLUR_AXIS_X:
get_current_coord = [&] { return it.x; };
coord_max = this->get_width();
elem_stride = input->elem_stride;
break;
case BLUR_AXIS_Y:
get_current_coord = [&] { return it.y; };
coord_max = this->get_height();
elem_stride = input->row_stride;
break;
}
for (; !it.is_end(); ++it) {
const int coord = get_current_coord();
const int start_coord = MAX2(0, coord - size_ + 1);
const int end_coord = MIN2(coord_max, coord + size_);
const int count = end_coord - start_coord;
float sum = 0.0f;
const float *start = it.in(0) + (start_coord - coord) * elem_stride;
const float *end = start + count * elem_stride;
for (const float *elem = start; elem < end; elem += elem_stride) {
sum += *elem;
}
*it.out = sum / count;
}
}
} // namespace blender::compositor
|
