Error HeifContext::Image::decode_image(std::shared_ptr<HeifPixelImage>& img,
                                       heif_colorspace colorspace,
                                       heif_chroma chroma,
                                       const struct heif_decoding_options* options) const
{
  Error err = m_heif_context->decode_image(m_id, img, options);
  if (err) {
    return err;
  }

  heif_chroma target_chroma = (chroma == heif_chroma_undefined ?
                               img->get_chroma_format() :
                               chroma);
  heif_colorspace target_colorspace = (colorspace == heif_colorspace_undefined ?
                                       img->get_colorspace() :
                                       colorspace);

  bool different_chroma = (target_chroma != img->get_chroma_format());
  bool different_colorspace = (target_colorspace != img->get_colorspace());

  if (different_chroma || different_colorspace) {
    img = img->convert_colorspace(target_colorspace, target_chroma);
    if (!img) {
      return Error(heif_error_Unsupported_feature, heif_suberror_Unsupported_color_conversion);
    }
  }

  return err;
}
Unknown