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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_AntiAliasOperation.h"
#include "BLI_math.h"
#include "BLI_utildefines.h"
#include "MEM_guardedalloc.h"
extern "C" {
# include "RE_render_ext.h"
}
AntiAliasOperation::AntiAliasOperation() : NodeOperation()
{
this->addInputSocket(COM_DT_VALUE);
this->addOutputSocket(COM_DT_VALUE);
this->m_valueReader = NULL;
this->m_buffer = NULL;
this->setComplex(true);
}
void AntiAliasOperation::initExecution()
{
this->m_valueReader = this->getInputSocketReader(0);
NodeOperation::initMutex();
}
void AntiAliasOperation::executePixel(float output[4], int x, int y, void * /*data*/)
{
if (y < 0 || (unsigned int)y >= this->m_height || x < 0 || (unsigned int)x >= this->m_width) {
output[0] = 0.0f;
}
else {
int offset = y * this->m_width + x;
output[0] = this->m_buffer[offset] / 255.0f;
}
}
void AntiAliasOperation::deinitExecution()
{
this->m_valueReader = NULL;
if (this->m_buffer) {
MEM_freeN(this->m_buffer);
}
NodeOperation::deinitMutex();
}
bool AntiAliasOperation::determineDependingAreaOfInterest(rcti * /*input*/, ReadBufferOperation *readOperation, rcti *output)
{
rcti imageInput;
if (this->m_buffer) {
return false;
}
else {
NodeOperation *operation = getInputOperation(0);
imageInput.xmax = operation->getWidth();
imageInput.xmin = 0;
imageInput.ymax = operation->getHeight();
imageInput.ymin = 0;
if (operation->determineDependingAreaOfInterest(&imageInput, readOperation, output) ) {
return true;
}
}
return false;
}
void *AntiAliasOperation::initializeTileData(rcti *rect)
{
if (this->m_buffer) { return this->m_buffer; }
lockMutex();
if (this->m_buffer == NULL) {
MemoryBuffer *tile = (MemoryBuffer *)this->m_valueReader->initializeTileData(rect);
int size = tile->getHeight() * tile->getWidth();
float *input = tile->getBuffer();
char *valuebuffer = (char *)MEM_mallocN(sizeof(char) * size, __func__);
for (int i = 0; i < size; i++) {
float in = input[i];
valuebuffer[i] = FTOCHAR(in);
}
antialias_tagbuf(tile->getWidth(), tile->getHeight(), valuebuffer);
this->m_buffer = valuebuffer;
}
unlockMutex();
return this->m_buffer;
}
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