/* SPDX-License-Identifier: GPL-2.0-or-later
 * Copyright 2011 Blender Foundation. */

#pragma once

#include "COM_MultiThreadedOperation.h"
#include "DNA_node_types.h"

namespace blender::compositor {

class ProjectorLensDistortionOperation : public MultiThreadedOperation {
 private:
  /**
   * Cached reference to the input_program
   */
  SocketReader *input_program_;

  float dispersion_;
  /* TODO(manzanilla): to be removed with tiled implementation. */
  bool dispersion_available_;

  float kr_, kr2_;

 public:
  ProjectorLensDistortionOperation();

  /**
   * The inner loop of this operation.
   */
  void execute_pixel(float output[4], int x, int y, void *data) override;

  void init_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 update_dispersion();

  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