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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 2021, Blender Foundation.
*/
#pragma once
#include "COM_MultiThreadedOperation.h"
namespace blender::compositor {
/**
* Executes buffer updates per row. To be inherited only by operations with correlated coordinates
* between inputs and output.
*/
class MultiThreadedRowOperation : public MultiThreadedOperation {
protected:
struct PixelCursor {
float *out;
int out_stride;
const float *row_end;
Array<const float *> ins;
Array<int> in_strides;
public:
PixelCursor(int num_inputs);
void next()
{
BLI_assert(out < row_end);
out += out_stride;
for (int i = 0; i < ins.size(); i++) {
ins[i] += in_strides[i];
}
}
};
protected:
virtual void update_memory_buffer_row(PixelCursor &p) = 0;
private:
void update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs) final;
};
} // namespace blender::compositor
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