113 lines
3.6 KiB
C++
113 lines
3.6 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright 2011, Blender Foundation.
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*/
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#include "COM_BilateralBlurOperation.h"
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#include "BLI_math.h"
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extern "C" {
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# include "RE_pipeline.h"
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}
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BilateralBlurOperation::BilateralBlurOperation() : NodeOperation()
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{
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this->addInputSocket(COM_DT_COLOR);
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this->addInputSocket(COM_DT_COLOR);
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this->addOutputSocket(COM_DT_COLOR);
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this->setComplex(true);
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this->m_inputColorProgram = NULL;
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this->m_inputDeterminatorProgram = NULL;
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}
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void BilateralBlurOperation::initExecution()
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{
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this->m_inputColorProgram = getInputSocketReader(0);
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this->m_inputDeterminatorProgram = getInputSocketReader(1);
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this->m_space = this->m_data->sigma_space + this->m_data->iter;
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QualityStepHelper::initExecution(COM_QH_INCREASE);
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}
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void BilateralBlurOperation::executePixel(float output[4], int x, int y, void *data)
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{
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// read the determinator color at x, y, this will be used as the reference color for the determinator
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float determinatorReferenceColor[4];
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float determinator[4];
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float tempColor[4];
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float blurColor[4];
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float blurDivider;
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float space = this->m_space;
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float sigmacolor = this->m_data->sigma_color;
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int minx = floor(x - space);
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int maxx = ceil(x + space);
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int miny = floor(y - space);
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int maxy = ceil(y + space);
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float deltaColor;
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this->m_inputDeterminatorProgram->read(determinatorReferenceColor, x, y, data);
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zero_v4(blurColor);
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blurDivider = 0.0f;
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/* TODO(sergey): This isn't really good bilateral filter, it should be
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* using gaussian bell for weights. Also sigma_color doesn't seem to be
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* used correct at all.
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*/
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for (int yi = miny; yi < maxy; yi += QualityStepHelper::getStep()) {
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for (int xi = minx; xi < maxx; xi += QualityStepHelper::getStep()) {
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// read determinator
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this->m_inputDeterminatorProgram->read(determinator, xi, yi, data);
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deltaColor = (fabsf(determinatorReferenceColor[0] - determinator[0]) +
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fabsf(determinatorReferenceColor[1] - determinator[1]) +
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fabsf(determinatorReferenceColor[2] - determinator[2])); // do not take the alpha channel into account
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if (deltaColor < sigmacolor) {
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// add this to the blur
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this->m_inputColorProgram->read(tempColor, xi, yi, data);
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add_v4_v4(blurColor, tempColor);
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blurDivider += 1.0f;
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}
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}
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}
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if (blurDivider > 0.0f) {
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mul_v4_v4fl(output, blurColor, 1.0f / blurDivider);
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}
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else {
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output[0] = 0.0f;
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output[1] = 0.0f;
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output[2] = 0.0f;
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output[3] = 1.0f;
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}
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}
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void BilateralBlurOperation::deinitExecution()
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{
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this->m_inputColorProgram = NULL;
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this->m_inputDeterminatorProgram = NULL;
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}
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bool BilateralBlurOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
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{
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rcti newInput;
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int add = ceil(this->m_space) + 1;
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newInput.xmax = input->xmax + (add);
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newInput.xmin = input->xmin - (add);
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newInput.ymax = input->ymax + (add);
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newInput.ymin = input->ymin - (add);
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return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
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}
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