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/*
* Copyright 2012, 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:
* Jeroen Bakker
* Monique Dewanchand
* Sergey Sharybin
*/
#include "COM_KeyingBlurOperation.h"
#include "MEM_guardedalloc.h"
#include "BLI_listbase.h"
#include "BLI_math.h"
KeyingBlurOperation::KeyingBlurOperation() : NodeOperation()
{
this->addInputSocket(COM_DT_VALUE);
this->addOutputSocket(COM_DT_VALUE);
this->m_size = 0;
this->m_axis = BLUR_AXIS_X;
this->setComplex(true);
}
void *KeyingBlurOperation::initializeTileData(rcti *rect)
{
void *buffer = getInputOperation(0)->initializeTileData(rect);
return buffer;
}
void KeyingBlurOperation::executePixel(float output[4], int x, int y, void *data)
{
MemoryBuffer *inputBuffer = (MemoryBuffer *)data;
float *buffer = inputBuffer->getBuffer();
int bufferWidth = inputBuffer->getWidth();
int bufferHeight = inputBuffer->getHeight();
int i, count = 0;
float average = 0.0f;
if (this->m_axis == 0) {
for (i = -this->m_size + 1; i < this->m_size; i++) {
int cx = x + i;
if (cx >= 0 && cx < bufferWidth) {
int bufferIndex = (y * bufferWidth + cx) * 4;
average += buffer[bufferIndex];
count++;
}
}
}
else {
for (i = -this->m_size + 1; i < this->m_size; i++) {
int cy = y + i;
if (cy >= 0 && cy < bufferHeight) {
int bufferIndex = (cy * bufferWidth + x) * 4;
average += buffer[bufferIndex];
count++;
}
}
}
average /= (float) count;
output[0] = average;
}
bool KeyingBlurOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
{
rcti newInput;
if (this->m_axis == BLUR_AXIS_X) {
newInput.xmin = input->xmin - this->m_size;
newInput.ymin = input->ymin;
newInput.xmax = input->xmax + this->m_size;
newInput.ymax = input->ymax;
}
else {
newInput.xmin = input->xmin;
newInput.ymin = input->ymin - this->m_size;
newInput.xmax = input->xmax;
newInput.ymax = input->ymax + this->m_size;
}
return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
}
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