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Started from buttom go to the sky

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Raphaël 2024-04-28 19:59:01 +02:00
parent 96215449bd
commit f811e55dea
4781 changed files with 10121 additions and 1743 deletions
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stdme/include/me/img/qoi/qoi_utils.h Normal file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* qoi_utils.h :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/12/24 18:59:56 by maiboyer #+# #+# */
/* Updated: 2023/12/25 22:33:07 by maiboyer ### ########.fr */
/* */
/* ************************************************************************** */
#ifndef QOI_UTILS_H
# define QOI_UTILS_H
# include "me/img/qoi.h"
# include "me/types.h"
# define QOI_OP_INDEX 0x00 /* 00xxxxxx */
# define QOI_OP_DIFF 0x40 /* 01xxxxxx */
# define QOI_OP_LUMA 0x80 /* 10xxxxxx */
# define QOI_OP_RUN 0xc0 /* 11xxxxxx */
# define QOI_OP_RGB 0xfe /* 11111110 */
# define QOI_OP_RGBA 0xff /* 11111111 */
# define QOI_MASK_2 0xc0 /* 11000000 */
# define QOI_MAGIC 0x716f6966u
//(((t_u32)'q') << 24 | ((t_u32)'o') << 16 | ((t_u32)'i') << 8 | ((t_u32)'f'))
# define QOI_HEADER_SIZE 14
/* 2GB is the max file size that this implementation can safely handle. We guard
against anything larger than that, assuming the worst case with 5 bytes per
pixel, rounded down to a nice clean value. 400 million pixels ought to be
enough for anybody. */
# define QOI_PIXELS_MAX 400000000u
typedef union u_qoi_rgba
{
struct s_qoi_rgba
{
t_u8 r;
t_u8 g;
t_u8 b;
t_u8 a;
} rgba;
t_u32 v;
} t_qoi_rgba;
void qoi_write_32(t_u8 *bytes, t_i32 *p, t_u32 v);
t_u32 qoi_read_32(const t_u8 *bytes, t_i32 *p);
static inline t_u32 qoi_color_hash(t_qoi_rgba c)
{
return (c.rgba.r * 3 + c.rgba.g * 5 + c.rgba.b * 7 + c.rgba.a * 11);
}
#endif /* QOI_UTILS_H */