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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:
* Jeroen Bakker
* Monique Dewanchand
*/
#include "COM_GaussianYBlurOperation.h"
#include "BLI_math.h"
#include "MEM_guardedalloc.h"
extern "C" {
#include "RE_pipeline.h"
}
GaussianYBlurOperation::GaussianYBlurOperation() : BlurBaseOperation(COM_DT_COLOR)
{
this->m_gausstab = NULL;
this->m_rad = 0;
}
void *GaussianYBlurOperation::initializeTileData(rcti *rect)
{
lockMutex();
if (!this->m_sizeavailable) {
updateGauss();
}
void *buffer = getInputOperation(0)->initializeTileData(NULL);
unlockMutex();
return buffer;
}
void GaussianYBlurOperation::initExecution()
{
BlurBaseOperation::initExecution();
initMutex();
if (this->m_sizeavailable) {
float rad = this->m_size * this->m_data->sizey;
if (rad < 1)
rad = 1;
this->m_rad = rad;
this->m_gausstab = BlurBaseOperation::make_gausstab(rad);
}
}
void GaussianYBlurOperation::updateGauss()
{
if (this->m_gausstab == NULL) {
updateSize();
float rad = this->m_size * this->m_data->sizey;
if (rad < 1)
rad = 1;
this->m_rad = rad;
this->m_gausstab = BlurBaseOperation::make_gausstab(rad);
}
}
void GaussianYBlurOperation::executePixel(float output[4], int x, int y, void *data)
{
float color_accum[4] = {0.0f, 0.0f, 0.0f, 0.0f};
float multiplier_accum = 0.0f;
MemoryBuffer *inputBuffer = (MemoryBuffer *)data;
float *buffer = inputBuffer->getBuffer();
int bufferwidth = inputBuffer->getWidth();
int bufferstartx = inputBuffer->getRect()->xmin;
int bufferstarty = inputBuffer->getRect()->ymin;
int miny = y - this->m_rad;
int maxy = y + this->m_rad;
int minx = x;
int maxx = x;
miny = max(miny, inputBuffer->getRect()->ymin);
minx = max(minx, inputBuffer->getRect()->xmin);
maxy = min(maxy, inputBuffer->getRect()->ymax);
maxx = min(maxx, inputBuffer->getRect()->xmax);
int index;
int step = getStep();
const int bufferIndexx = ((minx - bufferstartx) * 4) ;
for (int ny = miny; ny < maxy; ny += step) {
index = (ny - y) + this->m_rad;
int bufferindex = bufferIndexx + ((ny - bufferstarty) * 4 * bufferwidth);
const float multiplier = this->m_gausstab[index];
madd_v4_v4fl(color_accum, &buffer[bufferindex], multiplier);
multiplier_accum += multiplier;
}
mul_v4_v4fl(output, color_accum, 1.0f / multiplier_accum);
}
void GaussianYBlurOperation::deinitExecution()
{
BlurBaseOperation::deinitExecution();
MEM_freeN(this->m_gausstab);
this->m_gausstab = NULL;
deinitMutex();
}
bool GaussianYBlurOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
{
rcti newInput;
if (!m_sizeavailable) {
rcti sizeInput;
sizeInput.xmin = 0;
sizeInput.ymin = 0;
sizeInput.xmax = 5;
sizeInput.ymax = 5;
NodeOperation *operation = this->getInputOperation(1);
if (operation->determineDependingAreaOfInterest(&sizeInput, readOperation, output)) {
return true;
}
}
{
if (this->m_sizeavailable && this->m_gausstab != NULL) {
newInput.xmax = input->xmax;
newInput.xmin = input->xmin;
newInput.ymax = input->ymax + this->m_rad;
newInput.ymin = input->ymin - this->m_rad;
}
else {
newInput.xmax = this->getWidth();
newInput.xmin = 0;
newInput.ymax = this->getHeight();
newInput.ymin = 0;
}
return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
}
}
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