2021-03-10 17:09:47 +00:00
|
|
|
#ifndef SIXEL_H
|
|
|
|
|
#define SIXEL_H
|
|
|
|
|
|
|
|
|
|
#define DECSIXEL_PARAMS_MAX 16
|
|
|
|
|
#define DECSIXEL_PALETTE_MAX 1024
|
|
|
|
|
#define DECSIXEL_PARAMVALUE_MAX 65535
|
|
|
|
|
#define DECSIXEL_WIDTH_MAX 4096
|
|
|
|
|
#define DECSIXEL_HEIGHT_MAX 4096
|
|
|
|
|
|
|
|
|
|
typedef unsigned short sixel_color_no_t;
|
|
|
|
|
typedef unsigned int sixel_color_t;
|
|
|
|
|
|
|
|
|
|
typedef struct sixel_image_buffer {
|
|
|
|
|
sixel_color_no_t *data;
|
|
|
|
|
int width;
|
|
|
|
|
int height;
|
|
|
|
|
sixel_color_t palette[DECSIXEL_PALETTE_MAX];
|
|
|
|
|
sixel_color_no_t ncolors;
|
|
|
|
|
int palette_modified;
|
|
|
|
|
int use_private_register;
|
|
|
|
|
} sixel_image_t;
|
|
|
|
|
|
|
|
|
|
typedef enum parse_state {
|
|
|
|
|
PS_ESC = 1, /* ESC */
|
|
|
|
|
PS_DECSIXEL = 2, /* DECSIXEL body part ", $, -, ? ... ~ */
|
|
|
|
|
PS_DECGRA = 3, /* DECGRA Set Raster Attributes " Pan; Pad; Ph; Pv */
|
|
|
|
|
PS_DECGRI = 4, /* DECGRI Graphics Repeat Introducer ! Pn Ch */
|
|
|
|
|
PS_DECGCI = 5, /* DECGCI Graphics Color Introducer # Pc; Pu; Px; Py; Pz */
|
|
|
|
|
} parse_state_t;
|
|
|
|
|
|
|
|
|
|
typedef struct parser_context {
|
|
|
|
|
parse_state_t state;
|
|
|
|
|
int pos_x;
|
|
|
|
|
int pos_y;
|
|
|
|
|
int max_x;
|
|
|
|
|
int max_y;
|
|
|
|
|
int attributed_pan;
|
|
|
|
|
int attributed_pad;
|
|
|
|
|
int attributed_ph;
|
|
|
|
|
int attributed_pv;
|
|
|
|
|
int repeat_count;
|
|
|
|
|
int color_index;
|
|
|
|
|
int bgindex;
|
|
|
|
|
int grid_width;
|
|
|
|
|
int grid_height;
|
|
|
|
|
int param;
|
|
|
|
|
int nparams;
|
|
|
|
|
int params[DECSIXEL_PARAMS_MAX];
|
|
|
|
|
sixel_image_t image;
|
|
|
|
|
} sixel_state_t;
|
|
|
|
|
|
|
|
|
|
int sixel_parser_init(sixel_state_t *st, sixel_color_t fgcolor, sixel_color_t bgcolor, unsigned char use_private_register, int cell_width, int cell_height);
|
|
|
|
|
int sixel_parser_parse(sixel_state_t *st, unsigned char *p, size_t len);
|
|
|
|
|
int sixel_parser_set_default_color(sixel_state_t *st);
|
2023-12-12 20:29:26 +00:00
|
|
|
int sixel_parser_finalize(sixel_state_t *st, unsigned char **pixels);
|
2021-03-10 17:09:47 +00:00
|
|
|
void sixel_parser_deinit(sixel_state_t *st);
|
|
|
|
|
|
|
|
|
|
#endif
|
