118 lines
4.3 KiB
C
118 lines
4.3 KiB
C
/*
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* Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
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*
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* This file is part of libass.
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*
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* libass is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* libass is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with libass; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef LIBASS_CACHE_H
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#define LIBASS_CACHE_H
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#include "ass.h"
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#include "ass_font.h"
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#include "ass_bitmap.h"
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typedef void (*hashmap_item_dtor_t) (void *key, size_t key_size,
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void *value, size_t value_size);
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typedef int (*hashmap_key_compare_t) (void *key1, void *key2,
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size_t key_size);
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typedef unsigned (*hashmap_hash_t) (void *key, size_t key_size);
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typedef struct hashmap_item_s {
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void *key;
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void *value;
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struct hashmap_item_s *next;
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} hashmap_item_t;
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typedef hashmap_item_t *hashmap_item_p;
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typedef struct hashmap_s {
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int nbuckets;
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size_t key_size, value_size;
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hashmap_item_p *root;
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hashmap_item_dtor_t item_dtor; // a destructor for hashmap key/value pairs
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hashmap_key_compare_t key_compare;
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hashmap_hash_t hash;
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// stats
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int hit_count;
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int miss_count;
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int count;
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ass_library_t *library;
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} hashmap_t;
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hashmap_t *hashmap_init(ass_library_t *library, size_t key_size,
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size_t value_size, int nbuckets,
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hashmap_item_dtor_t item_dtor,
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hashmap_key_compare_t key_compare,
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hashmap_hash_t hash);
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void hashmap_done(hashmap_t *map);
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void *hashmap_insert(hashmap_t *map, void *key, void *value);
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void *hashmap_find(hashmap_t *map, void *key);
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hashmap_t *ass_font_cache_init(ass_library_t *library);
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ass_font_t *ass_font_cache_find(hashmap_t *, ass_font_desc_t *desc);
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void *ass_font_cache_add(hashmap_t *, ass_font_t *font);
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void ass_font_cache_done(hashmap_t *);
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// Create definitions for bitmap_hash_key and glyph_hash_key
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#define CREATE_STRUCT_DEFINITIONS
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#include "ass_cache_template.h"
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typedef struct bitmap_hash_val_s {
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bitmap_t *bm; // the actual bitmaps
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bitmap_t *bm_o;
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bitmap_t *bm_s;
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} bitmap_hash_val_t;
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hashmap_t *ass_bitmap_cache_init(ass_library_t *library);
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void *cache_add_bitmap(hashmap_t *, bitmap_hash_key_t *key,
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bitmap_hash_val_t *val);
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bitmap_hash_val_t *cache_find_bitmap(hashmap_t *bitmap_cache,
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bitmap_hash_key_t *key);
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hashmap_t *ass_bitmap_cache_reset(hashmap_t *bitmap_cache);
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void ass_bitmap_cache_done(hashmap_t *bitmap_cache);
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typedef struct composite_hash_val_s {
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unsigned char *a;
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unsigned char *b;
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} composite_hash_val_t;
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hashmap_t *ass_composite_cache_init(ass_library_t *library);
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void *cache_add_composite(hashmap_t *, composite_hash_key_t *key,
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composite_hash_val_t *val);
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composite_hash_val_t *cache_find_composite(hashmap_t *composite_cache,
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composite_hash_key_t *key);
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hashmap_t *ass_composite_cache_reset(hashmap_t *composite_cache);
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void ass_composite_cache_done(hashmap_t *composite_cache);
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typedef struct glyph_hash_val_s {
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FT_Glyph glyph;
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FT_Glyph outline_glyph;
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FT_BBox bbox_scaled; // bbox after scaling, but before rotation
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FT_Vector advance; // 26.6, advance distance to the next bitmap in line
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int asc, desc; // ascender/descender of a drawing
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} glyph_hash_val_t;
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hashmap_t *ass_glyph_cache_init(ass_library_t *library);
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void *cache_add_glyph(hashmap_t *, glyph_hash_key_t *key,
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glyph_hash_val_t *val);
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glyph_hash_val_t *cache_find_glyph(hashmap_t *glyph_cache,
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glyph_hash_key_t *key);
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hashmap_t *ass_glyph_cache_reset(hashmap_t *glyph_cache);
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void ass_glyph_cache_done(hashmap_t *glyph_cache);
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#endif /* LIBASS_CACHE_H */
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