libocio_colorspace.hh

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/* SPDX-FileCopyrightText: 2025 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#if defined(WITH_OPENCOLORIO)
 
#  include <string>
 
#  include "MEM_guardedalloc.h"
 
#  include "OCIO_colorspace.hh"
 
#  include "../cpu_processor_cache.hh"
#  include "../opencolorio.hh"
 
namespace blender::ocio {
 
class LibOCIOColorSpace : public ColorSpace {
  OCIO_NAMESPACE::ConstConfigRcPtr ocio_config_;
  OCIO_NAMESPACE::ConstColorSpaceRcPtr ocio_color_space_;
 
  std::string clean_description_;
  StringRefNull interop_id_;
  bool is_invertible_ = false;
 
  /* Mutable because they are lazily initialized and cached from the is_scene_linear() and
   * is_srgb(). */
  mutable bool is_info_cached_ = false;
  mutable bool is_scene_linear_ = false;
  mutable bool is_srgb_ = false;
 
  CPUProcessorCache to_scene_linear_cpu_processor_;
  CPUProcessorCache from_scene_linear_cpu_processor_;
 
 public:
  LibOCIOColorSpace(int index,
                    const OCIO_NAMESPACE::ConstConfigRcPtr &ocio_config,
                    const OCIO_NAMESPACE::ConstColorSpaceRcPtr &ocio_color_space);
 
  StringRefNull name() const override
  {
    /* TODO(sergey): Avoid construction StringRefNull on every call? */
    return ocio_color_space_->getName();
  }
  StringRefNull description() const override
  {
    return clean_description_;
  }
 
  StringRefNull interop_id() const override
  {
    return interop_id_;
  }
 
  bool is_invertible() const override
  {
    return is_invertible_;
  }
 
  bool is_scene_linear() const override;
  bool is_srgb() const override;
 
  bool is_data() const override
  {
    return ocio_color_space_->isData();
  }
 
  bool is_display_referred() const override
  {
    return ocio_color_space_->getReferenceSpaceType() == OCIO_NAMESPACE::REFERENCE_SPACE_DISPLAY;
  }
 
  const CPUProcessor *get_to_scene_linear_cpu_processor() const override;
  const CPUProcessor *get_from_scene_linear_cpu_processor() const override;
 
  void clear_caches();
 
  MEM_CXX_CLASS_ALLOC_FUNCS("LibOCIOColorSpace");
 
 private:
  void ensure_srgb_scene_linear_info() const;
};
 
}  // namespace blender::ocio
 
#endif