/* SPDX-License-Identifier: GPL-2.0-or-later
 * Copyright 2012 Blender Foundation. */

#pragma once

#include "COM_MultiThreadedOperation.h"

namespace blender::compositor {

class DisplaceSimpleOperation : public MultiThreadedOperation {
 private:
  /**
   * Cached reference to the input_program
   */
  SocketReader *input_color_program_;
  SocketReader *input_vector_program_;
  SocketReader *input_scale_xprogram_;
  SocketReader *input_scale_yprogram_;

  float width_x4_;
  float height_x4_;

 public:
  DisplaceSimpleOperation();

  /**
   * we need a full buffer for the image
   */
  bool determine_depending_area_of_interest(rcti *input,
                                            ReadBufferOperation *read_operation,
                                            rcti *output) override;

  /**
   * The inner loop of this operation.
   */
  void execute_pixel_sampled(float output[4], float x, float y, PixelSampler sampler) override;

  /**
   * Initialize the execution
   */
  void init_execution() override;

  /**
   * Deinitialize the execution
   */
  void deinit_execution() 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