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typedef struct { char **(*parameters)(const stp_printer_t printer, const char *ppd_file, const char *name, int *count); void (*media_size)(const stp_printer_t printer, const stp_vars_t v, int *width, int *height); void (*imageable_area)(const stp_printer_t printer, const stp_vars_t v, int *left, int *right, int *bottom, int *top); void (*limit)(const stp_printer_t printer, const stp_vars_t v, int *width, int *height); void (*print)(const stp_printer_t printer, stp_image_t *image, const stp_vars_t v); const char *(*default_parameters)(const stp_printer_t printer, const char *ppd_file, const char *name); void (*describe_resolution)(const stp_printer_t printer, const char *resolution, int *x, int *y); int (*verify)(const stp_printer_t p, const stp_vars_t v); } stp_printfuncs_t;
typedef struct stp_image { void (*init)(struct stp_image *image); void (*reset)(struct stp_image *image); void (*transpose)(struct stp_image *image); void (*hflip)(struct stp_image *image); void (*vflip)(struct stp_image *image); void (*crop)(struct stp_image *image, int left, int top, int right, int bottom); void (*rotate_ccw)(struct stp_image *image); void (*rotate_cw)(struct stp_image *image); void (*rotate_180)(struct stp_image *image); int (*bpp)(struct stp_image *image); int (*width)(struct stp_image *image); int (*height)(struct stp_image *image); void (*get_row)(struct stp_image *image, unsigned char *data, int row); const char *(*get_appname)(struct stp_image *image); void (*progress_init)(struct stp_image *image); void (*note_progress)(struct stp_image *image, double current, double total); void (*progress_conclude)(struct stp_image *image); void *rep; } stp_image_t;
This is an abstract data type for interfacing with the program which created the image.
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