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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.
*/
#include "COM_MultiThreadedRowOperation.h"
namespace blender::compositor {
MultiThreadedRowOperation::PixelCursor::PixelCursor(const int num_inputs)
: out(nullptr), out_stride(0), row_end(nullptr), ins(num_inputs), in_strides(num_inputs)
{
}
void MultiThreadedRowOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
BLI_assert(output != nullptr);
const int width = BLI_rcti_size_x(&area);
PixelCursor p(inputs.size());
p.out_stride = output->elem_stride;
for (int i = 0; i < p.in_strides.size(); i++) {
p.in_strides[i] = inputs[i]->elem_stride;
}
for (int y = area.ymin; y < area.ymax; y++) {
p.out = output->get_elem(area.xmin, y);
for (int i = 0; i < p.ins.size(); i++) {
p.ins[i] = inputs[i]->get_elem(area.xmin, y);
}
p.row_end = p.out + width * p.out_stride;
update_memory_buffer_row(p);
}
}
} // namespace blender::compositor
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