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/*
* 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.
*/
#pragma once
#include "COM_MultiThreadedOperation.h"
#include "DNA_node_types.h"
#include <functional>
namespace blender::compositor {
/**
* \brief base class of CalculateMean, implementing the simple CalculateMean
* \ingroup operation
*/
class CalculateMeanOperation : public MultiThreadedOperation {
public:
struct PixelsSum {
float sum;
int num_pixels;
};
protected:
/**
* \brief Cached reference to the reader
*/
SocketReader *image_reader_;
bool iscalculated_;
float result_;
int setting_;
std::function<float(const float *elem)> setting_func_;
public:
CalculateMeanOperation();
/**
* The inner loop of this operation.
*/
void execute_pixel(float output[4], int x, int y, void *data) override;
/**
* Initialize the execution
*/
void init_execution() override;
void *initialize_tile_data(rcti *rect) override;
/**
* Deinitialize the execution
*/
void deinit_execution() override;
bool determine_depending_area_of_interest(rcti *input,
ReadBufferOperation *read_operation,
rcti *output) override;
void set_setting(int setting);
void get_area_of_interest(int input_idx, const rcti &output_area, rcti &r_input_area) override;
virtual void update_memory_buffer_started(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs) override;
virtual void update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs) override;
protected:
void calculate_mean(MemoryBuffer *tile);
float calc_mean(const MemoryBuffer *input);
private:
PixelsSum calc_area_sum(const MemoryBuffer *input, const rcti &area);
};
} // namespace blender::compositor
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