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