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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2011 Blender Foundation. */
#include "COM_CalculateMeanOperation.h"
#include "COM_ExecutionSystem.h"
#include "IMB_colormanagement.h"
namespace blender::compositor {
CalculateMeanOperation::CalculateMeanOperation()
{
this->add_input_socket(DataType::Color, ResizeMode::Align);
this->add_output_socket(DataType::Value);
image_reader_ = nullptr;
iscalculated_ = false;
setting_ = 1;
flags_.complex = true;
}
void CalculateMeanOperation::init_execution()
{
image_reader_ = this->get_input_socket_reader(0);
iscalculated_ = false;
NodeOperation::init_mutex();
}
void CalculateMeanOperation::execute_pixel(float output[4], int /*x*/, int /*y*/, void * /*data*/)
{
output[0] = result_;
}
void CalculateMeanOperation::deinit_execution()
{
image_reader_ = nullptr;
NodeOperation::deinit_mutex();
}
bool CalculateMeanOperation::determine_depending_area_of_interest(
rcti * /*input*/, ReadBufferOperation *read_operation, rcti *output)
{
rcti image_input;
if (iscalculated_) {
return false;
}
NodeOperation *operation = get_input_operation(0);
image_input.xmax = operation->get_width();
image_input.xmin = 0;
image_input.ymax = operation->get_height();
image_input.ymin = 0;
if (operation->determine_depending_area_of_interest(&image_input, read_operation, output)) {
return true;
}
return false;
}
void *CalculateMeanOperation::initialize_tile_data(rcti *rect)
{
lock_mutex();
if (!iscalculated_) {
MemoryBuffer *tile = (MemoryBuffer *)image_reader_->initialize_tile_data(rect);
calculate_mean(tile);
iscalculated_ = true;
}
unlock_mutex();
return nullptr;
}
void CalculateMeanOperation::calculate_mean(MemoryBuffer *tile)
{
result_ = 0.0f;
float *buffer = tile->get_buffer();
int size = tile->get_width() * tile->get_height();
int pixels = 0;
float sum = 0.0f;
for (int i = 0, offset = 0; i < size; i++, offset += 4) {
if (buffer[offset + 3] > 0) {
pixels++;
switch (setting_) {
case 1: {
sum += IMB_colormanagement_get_luminance(&buffer[offset]);
break;
}
case 2: {
sum += buffer[offset];
break;
}
case 3: {
sum += buffer[offset + 1];
break;
}
case 4: {
sum += buffer[offset + 2];
break;
}
case 5: {
float yuv[3];
rgb_to_yuv(buffer[offset],
buffer[offset + 1],
buffer[offset + 2],
&yuv[0],
&yuv[1],
&yuv[2],
BLI_YUV_ITU_BT709);
sum += yuv[0];
break;
}
}
}
}
result_ = sum / pixels;
}
void CalculateMeanOperation::set_setting(int setting)
{
setting_ = setting;
switch (setting) {
case 1: {
setting_func_ = IMB_colormanagement_get_luminance;
break;
}
case 2: {
setting_func_ = [](const float *elem) { return elem[0]; };
break;
}
case 3: {
setting_func_ = [](const float *elem) { return elem[1]; };
break;
}
case 4: {
setting_func_ = [](const float *elem) { return elem[2]; };
break;
}
case 5: {
setting_func_ = [](const float *elem) {
float yuv[3];
rgb_to_yuv(elem[0], elem[1], elem[2], &yuv[0], &yuv[1], &yuv[2], BLI_YUV_ITU_BT709);
return yuv[0];
};
break;
}
}
}
void CalculateMeanOperation::get_area_of_interest(int input_idx,
const rcti &UNUSED(output_area),
rcti &r_input_area)
{
BLI_assert(input_idx == 0);
r_input_area = get_input_operation(input_idx)->get_canvas();
}
void CalculateMeanOperation::update_memory_buffer_started(MemoryBuffer *UNUSED(output),
const rcti &UNUSED(area),
Span<MemoryBuffer *> inputs)
{
if (!iscalculated_) {
MemoryBuffer *input = inputs[0];
result_ = calc_mean(input);
iscalculated_ = true;
}
}
void CalculateMeanOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> UNUSED(inputs))
{
output->fill(area, &result_);
}
float CalculateMeanOperation::calc_mean(const MemoryBuffer *input)
{
PixelsSum total = {0};
exec_system_->execute_work<PixelsSum>(
input->get_rect(),
[=](const rcti &split) { return calc_area_sum(input, split); },
total,
[](PixelsSum &join, const PixelsSum &chunk) {
join.sum += chunk.sum;
join.num_pixels += chunk.num_pixels;
});
return total.num_pixels == 0 ? 0.0f : total.sum / total.num_pixels;
}
using PixelsSum = CalculateMeanOperation::PixelsSum;
PixelsSum CalculateMeanOperation::calc_area_sum(const MemoryBuffer *input, const rcti &area)
{
PixelsSum result = {0};
for (const float *elem : input->get_buffer_area(area)) {
if (elem[3] <= 0.0f) {
continue;
}
result.sum += setting_func_(elem);
result.num_pixels++;
}
return result;
}
} // namespace blender::compositor
|
