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 #include "ass_bitmap.h" 27 28 typedef enum { 29 TOKEN_MOVE, 30 TOKEN_MOVE_NC, 31 TOKEN_LINE, 32 TOKEN_CUBIC_BEZIER, 33 TOKEN_CONIC_BEZIER, 34 TOKEN_B_SPLINE, 35 TOKEN_EXTEND_SPLINE, 36 TOKEN_CLOSE 37 } ASS_TokenType; 38 39 typedef struct ass_drawing_token { 40 ASS_TokenType type; 41 FT_Vector point; 42 struct ass_drawing_token *next; 43 struct ass_drawing_token *prev; 44 } ASS_DrawingToken; 45 46 typedef struct { 47 char *text; // drawing string 48 int scale; // scale (1-64) for subpixel accuracy 49 double pbo; // drawing will be shifted in y direction by this amount 50 double scale_x; // FontScaleX 51 double scale_y; // FontScaleY 52 int asc; // ascender 53 int desc; // descender 54 ASS_Outline outline; // target outline 55 FT_Vector advance; // advance (from cbox) 56 int hash; // hash value (for caching) 57 58 // private 59 FT_Library ftlibrary; // needed for font ops 60 ASS_Library *library; 61 ASS_DrawingToken *tokens; // tokenized drawing 62 double point_scale_x; 63 double point_scale_y; 64 FT_BBox cbox; // bounding box, or let's say... VSFilter's idea of it 65 } ASS_Drawing; 66 67 ASS_Drawing *ass_drawing_new(ASS_Library *lib, FT_Library ftlib); 68 void ass_drawing_free(ASS_Drawing* drawing); 69 void ass_drawing_set_text(ASS_Drawing* drawing, char *str, size_t n); 70 void ass_drawing_hash(ASS_Drawing* drawing); 71 ASS_Outline *ass_drawing_parse(ASS_Drawing *drawing, int raw_mode); 72 73 #endif /* LIBASS_DRAWING_H */ 74