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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2008-2021 Blender Foundation. All rights reserved. */
/** \file
* \ingroup blendthumb
*
* Shared thumbnail extraction logic.
*
* Used for both MS-Windows DLL and Unix command line.
*/
#pragma once
#include <optional>
#include "BLI_array.hh"
#include "BLI_vector.hh"
struct FileReader;
struct Thumbnail {
blender::Array<uint8_t> data;
int width;
int height;
};
enum eThumbStatus {
BT_OK = 0,
BT_FILE_ERR = 1,
BT_COMPRES_ERR = 2,
BT_DECOMPRESS_ERR = 3,
BT_INVALID_FILE = 4,
BT_EARLY_VERSION = 5,
BT_INVALID_THUMB = 6,
BT_ERROR = 9
};
std::optional<blender::Vector<uint8_t>> blendthumb_create_png_data_from_thumb(
const Thumbnail *thumb);
/**
* This function extracts the thumbnail from the .blend file into thumb.
* Returns #BT_OK for success and the relevant error code otherwise.
*/
eThumbStatus blendthumb_create_thumb_from_file(struct FileReader *rawfile, Thumbnail *thumb);
/* INTEGER CODES */
#ifdef __BIG_ENDIAN__
/* Big Endian */
# define MAKE_ID(a, b, c, d) ((int)(a) << 24 | (int)(b) << 16 | (c) << 8 | (d))
#else
/* Little Endian */
# define MAKE_ID(a, b, c, d) ((int)(d) << 24 | (int)(c) << 16 | (b) << 8 | (a))
#endif
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