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
|
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright 2012, Blender Foundation.
*/
#include "COM_KeyingClipOperation.h"
#include "MEM_guardedalloc.h"
#include "BLI_listbase.h"
#include "BLI_math.h"
KeyingClipOperation::KeyingClipOperation()
{
this->addInputSocket(DataType::Value);
this->addOutputSocket(DataType::Value);
this->m_kernelRadius = 3;
this->m_kernelTolerance = 0.1f;
this->m_clipBlack = 0.0f;
this->m_clipWhite = 1.0f;
this->m_isEdgeMatte = false;
this->setComplex(true);
}
void *KeyingClipOperation::initializeTileData(rcti *rect)
{
void *buffer = getInputOperation(0)->initializeTileData(rect);
return buffer;
}
void KeyingClipOperation::executePixel(float output[4], int x, int y, void *data)
{
const int delta = this->m_kernelRadius;
const float tolerance = this->m_kernelTolerance;
MemoryBuffer *inputBuffer = (MemoryBuffer *)data;
float *buffer = inputBuffer->getBuffer();
int bufferWidth = inputBuffer->getWidth();
int bufferHeight = inputBuffer->getHeight();
float value = buffer[(y * bufferWidth + x)];
bool ok = false;
int start_x = max_ff(0, x - delta + 1), start_y = max_ff(0, y - delta + 1),
end_x = min_ff(x + delta - 1, bufferWidth - 1),
end_y = min_ff(y + delta - 1, bufferHeight - 1);
int count = 0, totalCount = (end_x - start_x + 1) * (end_y - start_y + 1) - 1;
int thresholdCount = ceil((float)totalCount * 0.9f);
if (delta == 0) {
ok = true;
}
for (int cx = start_x; ok == false && cx <= end_x; cx++) {
for (int cy = start_y; ok == false && cy <= end_y; cy++) {
if (UNLIKELY(cx == x && cy == y)) {
continue;
}
int bufferIndex = (cy * bufferWidth + cx);
float currentValue = buffer[bufferIndex];
if (fabsf(currentValue - value) < tolerance) {
count++;
if (count >= thresholdCount) {
ok = true;
}
}
}
}
if (this->m_isEdgeMatte) {
if (ok) {
output[0] = 0.0f;
}
else {
output[0] = 1.0f;
}
}
else {
output[0] = value;
if (ok) {
if (output[0] < this->m_clipBlack) {
output[0] = 0.0f;
}
else if (output[0] >= this->m_clipWhite) {
output[0] = 1.0f;
}
else {
output[0] = (output[0] - this->m_clipBlack) / (this->m_clipWhite - this->m_clipBlack);
}
}
}
}
bool KeyingClipOperation::determineDependingAreaOfInterest(rcti *input,
ReadBufferOperation *readOperation,
rcti *output)
{
rcti newInput;
newInput.xmin = input->xmin - this->m_kernelRadius;
newInput.ymin = input->ymin - this->m_kernelRadius;
newInput.xmax = input->xmax + this->m_kernelRadius;
newInput.ymax = input->ymax + this->m_kernelRadius;
return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
}
|
