/*

 * HEIF codec.

 * Copyright (c) 2024 Dirk Farin <dirk.farin@gmail.com>

 *

 * This file is part of libheif.

 *

 * libheif is free software: you can redistribute it and/or modify

 * it under the terms of the GNU Lesser General Public License as

 * published by the Free Software Foundation, either version 3 of

 * the License, or (at your option) any later version.

 *

 * libheif 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 Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with libheif.  If not, see <http://www.gnu.org/licenses/>.

 */

#ifndef HEIF_ENCODER_HEVC_H

#define HEIF_ENCODER_HEVC_H

#include "libheif/heif.h"

#include "box.h"

#include "error.h"

#include "file.h"

#include <memory>

#include <string>

#include <utility>

#include <vector>

#include "codecs/encoder.h"

class Encoder_HEVC : public Encoder {

public:

  Result<CodedImageData> encode(const std::shared_ptr<HeifPixelImage>& image,

                                heif_encoder* encoder,

                                const heif_encoding_options& options,

                                heif_image_input_class input_class) override;

  bool encode_sequence_started() const override { return m_encoder_active; }

  Error encode_sequence_frame(const std::shared_ptr<HeifPixelImage>& image,

                              heif_encoder* encoder,

                              const heif_sequence_encoding_options& options,

                              heif_image_input_class input_class,

                              uint32_t framerate_num, uint32_t framerate_denom,

                              uintptr_t frame_number) override;

  Error encode_sequence_flush(heif_encoder* encoder) override;

  std::optional<CodedImageData> encode_sequence_get_data() override;

  std::shared_ptr<Box_VisualSampleEntry> get_sample_description_box(const CodedImageData&) const override;

private:

  bool m_encoder_active = false;

  bool m_end_of_sequence_reached = false;

  // Whether the hvcC is complete and was returned in an encode_sequence_get_data() call.

  bool m_hvcC_has_VPS = false;

  bool m_hvcC_has_SPS = false;

  bool m_hvcC_has_PPS = false;

  std::shared_ptr<class Box_hvcC> m_hvcC;

  bool m_hvcC_sent = false;

  int m_encoded_image_width = 0;

  int m_encoded_image_height = 0;

  std::optional<CodedImageData> m_current_output_data;

  Error get_data(heif_encoder*);

};

#endif