/*

 * 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/>.

 */

#include "vvc_dec.h"

#include "vvc_boxes.h"

#include "error.h"

#include "context.h"

#include <string>

Result<std::vector<uint8_t>> Decoder_VVC::read_bitstream_configuration_data() const

{

  std::vector<uint8_t> data;

  if (!m_vvcC->get_headers(&data)) {

    return Error{heif_error_Invalid_input,

                 heif_suberror_No_item_data};

  }

  return data;

}

int Decoder_VVC::get_luma_bits_per_pixel() const

{

  const Box_vvcC::configuration& config = m_vvcC->get_configuration();

  if (config.ptl_present_flag) {

    return config.bit_depth_minus8 + 8;

  }

  else {

    return 8; // TODO: what shall we do if the bit-depth is unknown? Use PIXI?

  }

}

int Decoder_VVC::get_chroma_bits_per_pixel() const

{

  return get_luma_bits_per_pixel();

}

Error Decoder_VVC::get_coded_image_colorspace(heif_colorspace* out_colorspace, heif_chroma* out_chroma) const

{

  *out_chroma = (heif_chroma) (m_vvcC->get_configuration().chroma_format_idc);

  if (*out_chroma == heif_chroma_monochrome) {

    *out_colorspace = heif_colorspace_monochrome;

  }

  else {

    *out_colorspace = heif_colorspace_YCbCr;

  }

  return Error::Ok;

}