100 lines
2.9 KiB
C++
100 lines
2.9 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 2012, Blender Foundation.
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*/
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#include "COM_KeyingBlurOperation.h"
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#include "MEM_guardedalloc.h"
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#include "BLI_listbase.h"
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#include "BLI_math.h"
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namespace blender::compositor {
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KeyingBlurOperation::KeyingBlurOperation()
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{
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this->addInputSocket(DataType::Value);
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this->addOutputSocket(DataType::Value);
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this->m_size = 0;
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this->m_axis = BLUR_AXIS_X;
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this->flags.complex = true;
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}
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void *KeyingBlurOperation::initializeTileData(rcti *rect)
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{
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void *buffer = getInputOperation(0)->initializeTileData(rect);
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return buffer;
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}
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void KeyingBlurOperation::executePixel(float output[4], int x, int y, void *data)
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{
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MemoryBuffer *inputBuffer = (MemoryBuffer *)data;
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const int bufferWidth = inputBuffer->getWidth();
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float *buffer = inputBuffer->getBuffer();
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int count = 0;
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float average = 0.0f;
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if (this->m_axis == 0) {
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const int start = MAX2(0, x - this->m_size + 1), end = MIN2(bufferWidth, x + this->m_size);
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for (int cx = start; cx < end; cx++) {
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int bufferIndex = (y * bufferWidth + cx);
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average += buffer[bufferIndex];
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count++;
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}
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}
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else {
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const int start = MAX2(0, y - this->m_size + 1),
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end = MIN2(inputBuffer->getHeight(), y + this->m_size);
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for (int cy = start; cy < end; cy++) {
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int bufferIndex = (cy * bufferWidth + x);
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average += buffer[bufferIndex];
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count++;
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}
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}
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average /= (float)count;
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output[0] = average;
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}
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bool KeyingBlurOperation::determineDependingAreaOfInterest(rcti *input,
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ReadBufferOperation *readOperation,
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rcti *output)
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{
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rcti newInput;
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if (this->m_axis == BLUR_AXIS_X) {
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newInput.xmin = input->xmin - this->m_size;
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newInput.ymin = input->ymin;
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newInput.xmax = input->xmax + this->m_size;
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newInput.ymax = input->ymax;
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}
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else {
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newInput.xmin = input->xmin;
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newInput.ymin = input->ymin - this->m_size;
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newInput.xmax = input->xmax;
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newInput.ymax = input->ymax + this->m_size;
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}
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return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
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}
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} // namespace blender::compositor
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