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50 lines
2.2 KiB
C
50 lines
2.2 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)(const HashTable *,const HashKey_t,const HashVal_t,void *);
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typedef void (*IteratorUpdateFunc)(const HashTable *,const HashKey_t,HashVal_t *,void *);
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typedef void (*KeyDestroyFunc)(const HashTable *,HashKey_t);
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typedef void (*ValDestroyFunc)(const HashTable *,HashVal_t);
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typedef void (*ComputeFunc)(const HashTable *,const HashKey_t,HashVal_t *);
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typedef void (*CollisionFunc)(const HashTable *,HashKey_t *,HashVal_t *,HashKey_t,HashVal_t);
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HashTable * hashtable_new(HashFunc hf,HashCmpFunc cf);
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void hashtable_free(HashTable *h);
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void hashtable_foreach(HashTable *h,IteratorFunc i,void *u);
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void hashtable_foreach_update(HashTable *h,IteratorUpdateFunc i,void *u);
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int hashtable_insert(HashTable *h,HashKey_t key,HashVal_t val);
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int hashtable_update(HashTable *h,HashKey_t key,HashVal_t val);
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int hashtable_lookup(const HashTable *h,const HashKey_t key,HashVal_t *valp);
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int hashtable_lookup_or_insert(HashTable *h,HashKey_t key,HashVal_t *valp,HashVal_t val);
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int hashtable_insert_or_update_computed(HashTable *h,HashKey_t key,ComputeFunc newFunc,ComputeFunc existsFunc);
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int hashtable_delete(HashTable *h,const HashKey_t key);
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int hashtable_remove(HashTable *h,const HashKey_t key,HashKey_t *keyRet,HashVal_t *valRet);
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void *hashtable_set_user_data(HashTable *h,void *data);
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void *hashtable_get_user_data(const HashTable *h);
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KeyDestroyFunc hashtable_set_key_destroy_func(HashTable *,KeyDestroyFunc d);
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ValDestroyFunc hashtable_set_value_destroy_func(HashTable *,ValDestroyFunc d);
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uint32_t hashtable_get_count(const HashTable *h);
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void hashtable_rehash(HashTable *h);
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void hashtable_rehash_compute(HashTable *h,CollisionFunc cf);
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#endif // __QUANTHASH_H__
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