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56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
/*
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* The Python Imaging Library
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* $Id$
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*
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* image quantizer
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*
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* Written by Toby J Sargeant <tjs@longford.cs.monash.edu.au>.
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*
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* See the README file for information on usage and redistribution.
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*/
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#ifndef __QUANTHASH_H__
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#define __QUANTHASH_H__
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#include "QuantTypes.h"
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typedef struct _HashTable HashTable;
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typedef Pixel HashKey_t;
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typedef uint32_t HashVal_t;
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typedef uint32_t (*HashFunc)(const HashTable *, const HashKey_t);
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typedef int (*HashCmpFunc)(const HashTable *, const HashKey_t, const HashKey_t);
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typedef void (*IteratorFunc)(
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const HashTable *, const HashKey_t, const HashVal_t, void *);
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typedef void (*IteratorUpdateFunc)(
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const HashTable *, const HashKey_t, HashVal_t *, void *);
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typedef void (*ComputeFunc)(const HashTable *, const HashKey_t, HashVal_t *);
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typedef void (*CollisionFunc)(
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const HashTable *, HashKey_t *, HashVal_t *, HashKey_t, HashVal_t);
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HashTable *
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hashtable_new(HashFunc hf, HashCmpFunc cf);
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void
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hashtable_free(HashTable *h);
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void
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hashtable_foreach(HashTable *h, IteratorFunc i, void *u);
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void
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hashtable_foreach_update(HashTable *h, IteratorUpdateFunc i, void *u);
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int
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hashtable_insert(HashTable *h, HashKey_t key, HashVal_t val);
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int
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hashtable_lookup(const HashTable *h, const HashKey_t key, HashVal_t *valp);
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int
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hashtable_insert_or_update_computed(
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HashTable *h, HashKey_t key, ComputeFunc newFunc, ComputeFunc existsFunc);
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void *
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hashtable_set_user_data(HashTable *h, void *data);
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void *
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hashtable_get_user_data(const HashTable *h);
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uint32_t
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hashtable_get_count(const HashTable *h);
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void
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hashtable_rehash_compute(HashTable *h, CollisionFunc cf);
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#endif // __QUANTHASH_H__
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