1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
// -*- c-basic-offset: 8; indent-tabs-mode: t -*-
// vim:ts=8:sw=8:noet:ai:
/*
Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef LIBASS_CACHE_H
#define LIBASS_CACHE_H
#include "ass.h"
#include "ass_font.h"
#include "ass_bitmap.h"
void ass_font_cache_init(void);
ass_font_t* ass_font_cache_find(ass_font_desc_t* desc);
void* ass_font_cache_add(ass_font_t* font);
void ass_font_cache_done(void);
// describes a bitmap; bitmaps with equivalents structs are considered identical
typedef struct bitmap_hash_key_s {
char bitmap; // bool : true = bitmap, false = outline
ass_font_t* font;
double size; // font size
uint32_t ch; // character code
unsigned outline; // border width, 16.16 fixed point value
int bold, italic;
char be; // blur edges
unsigned scale_x, scale_y; // 16.16
int frx, fry, frz; // signed 16.16
int shift_x, shift_y; // shift vector that was added to glyph before applying rotation
// = 0, if frx = fry = frx = 0
// = (glyph base point) - (rotation origin), otherwise
FT_Vector advance; // subpixel shift vector
} bitmap_hash_key_t;
typedef struct bitmap_hash_val_s {
bitmap_t* bm; // the actual bitmaps
bitmap_t* bm_o;
bitmap_t* bm_s;
} bitmap_hash_val_t;
void ass_bitmap_cache_init(void);
void* cache_add_bitmap(bitmap_hash_key_t* key, bitmap_hash_val_t* val);
bitmap_hash_val_t* cache_find_bitmap(bitmap_hash_key_t* key);
void ass_bitmap_cache_reset(void);
void ass_bitmap_cache_done(void);
// describes an outline glyph
typedef struct glyph_hash_key_s {
ass_font_t* font;
double size; // font size
uint32_t ch; // character code
int bold, italic;
unsigned scale_x, scale_y; // 16.16
FT_Vector advance; // subpixel shift vector
unsigned outline; // border width, 16.16
} glyph_hash_key_t;
typedef struct glyph_hash_val_s {
FT_Glyph glyph;
FT_Glyph outline_glyph;
FT_BBox bbox_scaled; // bbox after scaling, but before rotation
FT_Vector advance; // 26.6, advance distance to the next bitmap in line
} glyph_hash_val_t;
void ass_glyph_cache_init(void);
void* cache_add_glyph(glyph_hash_key_t* key, glyph_hash_val_t* val);
glyph_hash_val_t* cache_find_glyph(glyph_hash_key_t* key);
void ass_glyph_cache_reset(void);
void ass_glyph_cache_done(void);
typedef struct hashmap_s hashmap_t;
typedef void (*hashmap_item_dtor_t)(void* key, size_t key_size, void* value, size_t value_size);
typedef int (*hashmap_key_compare_t)(void* key1, void* key2, size_t key_size);
typedef unsigned (*hashmap_hash_t)(void* key, size_t key_size);
hashmap_t* hashmap_init(size_t key_size, size_t value_size, int nbuckets,
hashmap_item_dtor_t item_dtor, hashmap_key_compare_t key_compare,
hashmap_hash_t hash);
void hashmap_done(hashmap_t* map);
void* hashmap_insert(hashmap_t* map, void* key, void* value);
void* hashmap_find(hashmap_t* map, void* key);
#endif /* LIBASS_CACHE_H */
|
