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
|
/*
* 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_NormalizeOperation.h"
namespace blender::compositor {
NormalizeOperation::NormalizeOperation()
{
this->addInputSocket(DataType::Value);
this->addOutputSocket(DataType::Value);
this->m_imageReader = nullptr;
this->m_cachedInstance = nullptr;
this->flags.complex = true;
}
void NormalizeOperation::initExecution()
{
this->m_imageReader = this->getInputSocketReader(0);
NodeOperation::initMutex();
}
void NormalizeOperation::executePixel(float output[4], int x, int y, void *data)
{
/* using generic two floats struct to store `x: min`, `y: multiply` */
NodeTwoFloats *minmult = (NodeTwoFloats *)data;
this->m_imageReader->read(output, x, y, nullptr);
output[0] = (output[0] - minmult->x) * minmult->y;
/* clamp infinities */
if (output[0] > 1.0f) {
output[0] = 1.0f;
}
else if (output[0] < 0.0f) {
output[0] = 0.0f;
}
}
void NormalizeOperation::deinitExecution()
{
this->m_imageReader = nullptr;
delete this->m_cachedInstance;
NodeOperation::deinitMutex();
}
bool NormalizeOperation::determineDependingAreaOfInterest(rcti * /*input*/,
ReadBufferOperation *readOperation,
rcti *output)
{
rcti imageInput;
if (this->m_cachedInstance) {
return false;
}
NodeOperation *operation = getInputOperation(0);
imageInput.xmax = operation->getWidth();
imageInput.xmin = 0;
imageInput.ymax = operation->getHeight();
imageInput.ymin = 0;
if (operation->determineDependingAreaOfInterest(&imageInput, readOperation, output)) {
return true;
}
return false;
}
/* The code below assumes all data is inside range +- this, and that input buffer is single channel
*/
#define BLENDER_ZMAX 10000.0f
void *NormalizeOperation::initializeTileData(rcti *rect)
{
lockMutex();
if (this->m_cachedInstance == nullptr) {
MemoryBuffer *tile = (MemoryBuffer *)this->m_imageReader->initializeTileData(rect);
/* using generic two floats struct to store `x: min`, `y: multiply`. */
NodeTwoFloats *minmult = new NodeTwoFloats();
float *buffer = tile->getBuffer();
int p = tile->getWidth() * tile->getHeight();
float *bc = buffer;
float minv = 1.0f + BLENDER_ZMAX;
float maxv = -1.0f - BLENDER_ZMAX;
float value;
while (p--) {
value = bc[0];
if ((value > maxv) && (value <= BLENDER_ZMAX)) {
maxv = value;
}
if ((value < minv) && (value >= -BLENDER_ZMAX)) {
minv = value;
}
bc++;
}
minmult->x = minv;
/* The rare case of flat buffer would cause a divide by 0 */
minmult->y = ((maxv != minv) ? 1.0f / (maxv - minv) : 0.0f);
this->m_cachedInstance = minmult;
}
unlockMutex();
return this->m_cachedInstance;
}
void NormalizeOperation::deinitializeTileData(rcti * /*rect*/, void * /*data*/)
{
/* pass */
}
} // namespace blender::compositor
|
