BLO_core_blend_header.hh

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/* SPDX-FileCopyrightText: 2025 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include <variant>
 
#include "BLO_core_bhead.hh"


#define BLEND_FILE_FORMAT_VERSION_0 0
#define BLEND_FILE_FORMAT_VERSION_1 1

#define SYSTEM_SUPPORTS_WRITING_FILE_VERSION_1 (ENDIAN_ORDER == L_ENDIAN && sizeof(void *) == 8)
 
#define MIN_SIZEOFBLENDERHEADER 12
#define MAX_SIZEOFBLENDERHEADER 17

#define SIZEOFBLENDERHEADER_VERSION_0 12
#define SIZEOFBLENDERHEADER_VERSION_1 17

struct BlenderHeader {
  int pointer_size;
  int endian;
  int file_version;
  int file_format_version;
 
  BHeadType bhead_type() const;
};

struct BlenderHeaderUnknown {};

struct BlenderHeaderInvalid {};
 
using BlenderHeaderVariant =
    std::variant<BlenderHeaderInvalid, BlenderHeaderUnknown, BlenderHeader>;

BlenderHeaderVariant BLO_readfile_blender_header_decode(FileReader *file);