1 /* 2 * Copyright (C) 2009 Grigori Goronzy <greg@geekmind.org> 3 * 4 * This file is part of libass. 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #ifndef LIBASS_DRAWING_H 20 #define LIBASS_DRAWING_H 21 22 #include <ft2build.h> 23 #include FT_OUTLINE_H 24 25 #include "ass.h" 26 27 #define DRAWING_INITIAL_SIZE 256 28 29 typedef enum { 30 TOKEN_MOVE, 31 TOKEN_MOVE_NC, 32 TOKEN_LINE, 33 TOKEN_CUBIC_BEZIER, 34 TOKEN_CONIC_BEZIER, 35 TOKEN_B_SPLINE, 36 TOKEN_EXTEND_SPLINE, 37 TOKEN_CLOSE 38 } ASS_TokenType; 39 40 typedef struct ass_drawing_token { 41 ASS_TokenType type; 42 FT_Vector point; 43 struct ass_drawing_token *next; 44 struct ass_drawing_token *prev; 45 } ASS_DrawingToken; 46 47 typedef struct { 48 char *text; // drawing string 49 int i; // text index 50 int scale; // scale (1-64) for subpixel accuracy 51 double pbo; // drawing will be shifted in y direction by this amount 52 double scale_x; // FontScaleX 53 double scale_y; // FontScaleY 54 int asc; // ascender 55 int desc; // descender 56 FT_Outline outline; // target outline 57 FT_Vector advance; // advance (from cbox) 58 int hash; // hash value (for caching) 59 60 // private 61 FT_Library ftlibrary; // needed for font ops 62 ASS_Library *library; 63 int size; // current buffer size 64 ASS_DrawingToken *tokens; // tokenized drawing 65 int max_points; // current maximum size 66 int max_contours; 67 double point_scale_x; 68 double point_scale_y; 69 FT_BBox cbox; // bounding box, or let's say... VSFilter's idea of it 70 } ASS_Drawing; 71 72 ASS_Drawing *ass_drawing_new(ASS_Library *lib, FT_Library ftlib); 73 void ass_drawing_free(ASS_Drawing* drawing); 74 void ass_drawing_add_char(ASS_Drawing* drawing, char symbol); 75 void ass_drawing_hash(ASS_Drawing* drawing); 76 FT_Outline *ass_drawing_parse(ASS_Drawing *drawing, int raw_mode); 77 78 #endif /* LIBASS_DRAWING_H */ 79