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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->size = 0.0f;
this->setComplex(true);
}
void *KeyingBlurOperation::initializeTileData(rcti *rect, MemoryBuffer **memoryBuffers)
{
void *buffer = getInputOperation(0)->initializeTileData(rect, memoryBuffers);
return buffer;
}
void KeyingBlurOperation::executePixel(float *color, int x, int y, MemoryBuffer *inputBuffers[], void *data)
{
MemoryBuffer *inputBuffer = (MemoryBuffer *)data;
float *buffer = inputBuffer->getBuffer();
int bufferWidth = inputBuffer->getWidth();
int bufferHeight = inputBuffer->getHeight();
int i, j, count = 0;
float average = 0.0f;
for (i = -this->size + 1; i < this->size; i++) {
for (j = -this->size + 1; j < this->size; j++) {
int cx = x + j, cy = y + i;
if (cx >= 0 && cx < bufferWidth && cy >= 0 && cy < bufferHeight) {
int bufferIndex = (cy * bufferWidth + cx) * 4;
average += buffer[bufferIndex];
count++;
}
}
}
average /= (float) count;
color[0] = average;
}
bool KeyingBlurOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
{
rcti newInput;
newInput.xmin = 0;
newInput.ymin = 0;
newInput.xmax = this->getWidth();
newInput.ymax = this->getHeight();
return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
}
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