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/*
* Copyright 2011, Blender Foundation.
*
* 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.
*
* Contributor: Campbell Barton
*/
#include "MEM_guardedalloc.h"
#include "COM_DespeckleOperation.h"
#include "BLI_utildefines.h"
DespeckleOperation::DespeckleOperation() : NodeOperation()
{
this->addInputSocket(COM_DT_COLOR);
this->addInputSocket(COM_DT_VALUE);
this->addOutputSocket(COM_DT_COLOR);
this->setResolutionInputSocketIndex(0);
this->m_inputOperation = NULL;
this->setComplex(true);
}
void DespeckleOperation::initExecution()
{
this->m_inputOperation = this->getInputSocketReader(0);
this->m_inputValueOperation = this->getInputSocketReader(1);
}
void DespeckleOperation::deinitExecution()
{
this->m_inputOperation = NULL;
this->m_inputValueOperation = NULL;
}
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::executePixel(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, getWidth() - 1);
CLAMP(x2, 0, getWidth() - 1);
CLAMP(x3, 0, getWidth() - 1);
CLAMP(y1, 0, getHeight() - 1);
CLAMP(y2, 0, getHeight() - 1);
CLAMP(y3, 0, getHeight() - 1);
float value[4];
this->m_inputValueOperation->read(value, x2, y2, NULL);
//const float mval = 1.0f - value[0];
this->m_inputOperation->read(color_org, x2, y2, NULL);
#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, this->m_threshold)) { \
w += fac; \
madd_v4_v4fl(color_mid_ok, in1, fac); \
} \
}
zero_v4(color_mid);
zero_v4(color_mid_ok);
this->m_inputOperation->read(in1, x1, y1, NULL); COLOR_ADD(TOT_DIV_CNR)
this->m_inputOperation->read(in1, x2, y1, NULL); COLOR_ADD(TOT_DIV_ONE)
this->m_inputOperation->read(in1, x3, y1, NULL); COLOR_ADD(TOT_DIV_CNR)
this->m_inputOperation->read(in1, x1, y2, NULL); COLOR_ADD(TOT_DIV_ONE)
#if 0
this->m_inputOperation->read(in2, x2, y2, NULL);
madd_v4_v4fl(color_mid, in2, this->m_filter[4]);
#endif
this->m_inputOperation->read(in1, x3, y2, NULL); COLOR_ADD(TOT_DIV_ONE)
this->m_inputOperation->read(in1, x1, y3, NULL); COLOR_ADD(TOT_DIV_CNR)
this->m_inputOperation->read(in1, x2, y3, NULL); COLOR_ADD(TOT_DIV_ONE)
this->m_inputOperation->read(in1, x3, y3, NULL); 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) > (this->m_threshold_neighbor)) &&
color_diff(color_mid, color_org, this->m_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);
}
}
bool DespeckleOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
{
rcti newInput;
int addx = 2; //(this->m_filterWidth - 1) / 2 + 1;
int addy = 2; //(this->m_filterHeight - 1) / 2 + 1;
newInput.xmax = input->xmax + addx;
newInput.xmin = input->xmin - addx;
newInput.ymax = input->ymax + addy;
newInput.ymin = input->ymin - addy;
return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
}
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