132 lines
3.6 KiB
C++
132 lines
3.6 KiB
C++
/*
|
|
* 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.
|
|
*
|
|
* Copyright 2011, Blender Foundation.
|
|
*/
|
|
|
|
#include "COM_CalculateMeanOperation.h"
|
|
#include "BLI_math.h"
|
|
#include "BLI_utildefines.h"
|
|
|
|
#include "IMB_colormanagement.h"
|
|
|
|
namespace blender::compositor {
|
|
|
|
CalculateMeanOperation::CalculateMeanOperation()
|
|
{
|
|
this->addInputSocket(DataType::Color, ResizeMode::None);
|
|
this->addOutputSocket(DataType::Value);
|
|
this->m_imageReader = nullptr;
|
|
this->m_iscalculated = false;
|
|
this->m_setting = 1;
|
|
this->flags.complex = true;
|
|
}
|
|
void CalculateMeanOperation::initExecution()
|
|
{
|
|
this->m_imageReader = this->getInputSocketReader(0);
|
|
this->m_iscalculated = false;
|
|
NodeOperation::initMutex();
|
|
}
|
|
|
|
void CalculateMeanOperation::executePixel(float output[4], int /*x*/, int /*y*/, void * /*data*/)
|
|
{
|
|
output[0] = this->m_result;
|
|
}
|
|
|
|
void CalculateMeanOperation::deinitExecution()
|
|
{
|
|
this->m_imageReader = nullptr;
|
|
NodeOperation::deinitMutex();
|
|
}
|
|
|
|
bool CalculateMeanOperation::determineDependingAreaOfInterest(rcti * /*input*/,
|
|
ReadBufferOperation *readOperation,
|
|
rcti *output)
|
|
{
|
|
rcti imageInput;
|
|
if (this->m_iscalculated) {
|
|
return false;
|
|
}
|
|
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 *CalculateMeanOperation::initializeTileData(rcti *rect)
|
|
{
|
|
lockMutex();
|
|
if (!this->m_iscalculated) {
|
|
MemoryBuffer *tile = (MemoryBuffer *)this->m_imageReader->initializeTileData(rect);
|
|
calculateMean(tile);
|
|
this->m_iscalculated = true;
|
|
}
|
|
unlockMutex();
|
|
return nullptr;
|
|
}
|
|
|
|
void CalculateMeanOperation::calculateMean(MemoryBuffer *tile)
|
|
{
|
|
this->m_result = 0.0f;
|
|
float *buffer = tile->getBuffer();
|
|
int size = tile->getWidth() * tile->getHeight();
|
|
int pixels = 0;
|
|
float sum = 0.0f;
|
|
for (int i = 0, offset = 0; i < size; i++, offset += 4) {
|
|
if (buffer[offset + 3] > 0) {
|
|
pixels++;
|
|
|
|
switch (this->m_setting) {
|
|
case 1: {
|
|
sum += IMB_colormanagement_get_luminance(&buffer[offset]);
|
|
break;
|
|
}
|
|
case 2: {
|
|
sum += buffer[offset];
|
|
break;
|
|
}
|
|
case 3: {
|
|
sum += buffer[offset + 1];
|
|
break;
|
|
}
|
|
case 4: {
|
|
sum += buffer[offset + 2];
|
|
break;
|
|
}
|
|
case 5: {
|
|
float yuv[3];
|
|
rgb_to_yuv(buffer[offset],
|
|
buffer[offset + 1],
|
|
buffer[offset + 2],
|
|
&yuv[0],
|
|
&yuv[1],
|
|
&yuv[2],
|
|
BLI_YUV_ITU_BT709);
|
|
sum += yuv[0];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
this->m_result = sum / pixels;
|
|
}
|
|
|
|
} // namespace blender::compositor
|