COM_PreviewOperation.h

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/* SPDX-FileCopyrightText: 2011 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include "BKE_global.hh"
#include "BLI_rect.h"
#include "COM_MultiThreadedOperation.h"
#include "DNA_color_types.h"
#include "DNA_image_types.h"
 
namespace blender::compositor {
 
class PreviewOperation : public MultiThreadedOperation {
 protected:
  ImBuf *output_image_;

  bNodePreview *preview_;
  float divider_;
  unsigned int default_width_;
  unsigned int default_height_;
 
  const ColorManagedViewSettings *view_settings_;
  const ColorManagedDisplaySettings *display_settings_;
 
 public:
  PreviewOperation(const ColorManagedViewSettings *view_settings,
                   const ColorManagedDisplaySettings *display_settings,
                   unsigned int default_width,
                   unsigned int default_height);
  void verify_preview(bke::bNodeInstanceHash *previews, bNodeInstanceKey key);
 
  bool is_output_operation(bool /*rendering*/) const override
  {
    return !G.background;
  }
  void init_execution() override;
  void deinit_execution() override;
  eCompositorPriority get_render_priority() const override;
 
  void determine_canvas(const rcti &preferred_area, rcti &r_area) override;
 
  void get_area_of_interest(int input_idx, const rcti &output_area, rcti &r_input_area) override;
  void update_memory_buffer_partial(MemoryBuffer *output,
                                    const rcti &area,
                                    Span<MemoryBuffer *> inputs) override;
};
 
}  // namespace blender::compositor