+++ /dev/null
-/***************************************************************************/
-/* */
-/* ftcchunk.h */
-/* */
-/* FreeType chunk cache (specification). */
-/* */
-/* Copyright 2000-2001 by */
-/* David Turner, Robert Wilhelm, and Werner Lemberg. */
-/* */
-/* This file is part of the FreeType project, and may only be used, */
-/* modified, and distributed under the terms of the FreeType project */
-/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
-/* this file you indicate that you have read the license and */
-/* understand and accept it fully. */
-/* */
-/***************************************************************************/
-
-
- /*************************************************************************/
- /* */
- /* Important: The functions defined in this file are only used to */
- /* implement an abstract chunk cache class. You need to */
- /* provide additional logic to implement a complete cache. */
- /* For example, see `ftcmetrx.h' and `ftcmetrx.c' which */
- /* implement a glyph metrics cache based on this code. */
- /* */
- /*************************************************************************/
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /********* *********/
- /********* WARNING, THIS IS BETA CODE. *********/
- /********* *********/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
-#ifndef __FTCCHUNK_H__
-#define __FTCCHUNK_H__
-
-
-#include <ft2build.h>
-#include FT_CACHE_H
-#include FT_CACHE_MANAGER_H
-
-
-FT_BEGIN_HEADER
-
-
- /* maximum number of chunk sets in a given chunk cache */
-#define FTC_MAX_CHUNK_SETS 16
-
-
- typedef struct FTC_ChunkNodeRec_* FTC_ChunkNode;
- typedef struct FTC_ChunkSetRec_* FTC_ChunkSet;
- typedef struct FTC_Chunk_CacheRec_* FTC_Chunk_Cache;
-
- typedef struct FTC_ChunkNodeRec_
- {
- FTC_CacheNodeRec root;
- FTC_ChunkSet cset;
- FT_UShort cset_index;
- FT_UShort num_elements;
- FT_Byte* elements;
-
- } FTC_ChunkNodeRec;
-
-
-#define FTC_CHUNKNODE_TO_LRUNODE( x ) ((FT_ListNode)( x ))
-#define FTC_LRUNODE_TO_CHUNKNODE( x ) ((FTC_ChunkNode)( x ))
-
-
- /*************************************************************************/
- /* */
- /* chunk set methods */
- /* */
-
- /* used to set "element_max", "element_count" and "element_size" */
- typedef FT_Error
- (*FTC_ChunkSet_SizesFunc)( FTC_ChunkSet cset,
- FT_Pointer type );
-
- typedef FT_Error
- (*FTC_ChunkSet_InitFunc)( FTC_ChunkSet cset,
- FT_Pointer type );
-
- typedef void
- (*FTC_ChunkSet_DoneFunc)( FTC_ChunkSet cset );
-
- typedef FT_Bool
- (*FTC_ChunkSet_CompareFunc)( FTC_ChunkSet cset,
- FT_Pointer type );
-
-
- typedef FT_Error
- (*FTC_ChunkSet_NewNodeFunc)( FTC_ChunkSet cset,
- FT_UInt index,
- FTC_ChunkNode* anode );
-
- typedef void
- (*FTC_ChunkSet_DestroyNodeFunc)( FTC_ChunkNode node );
-
- typedef FT_ULong
- (*FTC_ChunkSet_SizeNodeFunc)( FTC_ChunkNode node );
-
-
- typedef struct FTC_ChunkSet_Class_
- {
- FT_UInt cset_byte_size;
-
- FTC_ChunkSet_InitFunc init;
- FTC_ChunkSet_DoneFunc done;
- FTC_ChunkSet_CompareFunc compare;
- FTC_ChunkSet_SizesFunc sizes;
-
- FTC_ChunkSet_NewNodeFunc new_node;
- FTC_ChunkSet_SizeNodeFunc size_node;
- FTC_ChunkSet_DestroyNodeFunc destroy_node;
-
- } FTC_ChunkSet_Class;
-
-
- typedef struct FTC_ChunkSetRec_
- {
- FTC_Chunk_Cache cache;
- FTC_Manager manager;
- FT_Memory memory;
- FTC_ChunkSet_Class* clazz;
- FT_UInt cset_index; /* index in parent cache */
-
- FT_UInt element_max; /* maximum number of elements */
- FT_UInt element_size; /* element size in bytes */
- FT_UInt element_count; /* number of elements per chunk */
-
- FT_UInt num_chunks;
- FTC_ChunkNode* chunks;
-
- } FTC_ChunkSetRec;
-
-
- /* the abstract chunk cache class */
- typedef struct FTC_Chunk_Cache_Class_
- {
- FTC_Cache_Class root;
- FTC_ChunkSet_Class* cset_class;
-
- } FTC_Chunk_Cache_Class;
-
-
- /* the abstract chunk cache object */
- typedef struct FTC_Chunk_CacheRec_
- {
- FTC_CacheRec root;
- FT_Lru csets_lru; /* static chunk set lru list */
- FTC_ChunkSet last_cset; /* small cache :-) */
- FTC_ChunkSet_CompareFunc compare; /* useful shortcut */
-
- } FTC_Chunk_CacheRec;
-
-
- /*************************************************************************/
- /* */
- /* These functions are exported so that they can be called from */
- /* user-provided cache classes; otherwise, they are really part of the */
- /* cache sub-system internals. */
- /* */
-
- FT_EXPORT( FT_Error )
- FTC_ChunkNode_Init( FTC_ChunkNode node,
- FTC_ChunkSet cset,
- FT_UInt index,
- FT_Bool alloc );
-
-#define FTC_ChunkNode_Ref( n ) \
- FTC_CACHENODE_TO_DATA_P( &(n)->root )->ref_count++
-
-#define FTC_ChunkNode_Unref( n ) \
- FTC_CACHENODE_TO_DATA_P( &(n)->root )->ref_count--
-
-
- /* chunk set objects */
-
- FT_EXPORT( void )
- FTC_ChunkNode_Destroy( FTC_ChunkNode node );
-
-
- FT_EXPORT( FT_Error )
- FTC_ChunkSet_New( FTC_Chunk_Cache cache,
- FT_Pointer type,
- FTC_ChunkSet *aset );
-
-
- FT_EXPORT( FT_Error )
- FTC_ChunkSet_Lookup_Node( FTC_ChunkSet cset,
- FT_UInt glyph_index,
- FTC_ChunkNode* anode,
- FT_UInt *anindex );
-
-
- /* chunk cache objects */
-
- FT_EXPORT( FT_Error )
- FTC_Chunk_Cache_Init( FTC_Chunk_Cache cache );
-
- FT_EXPORT( void )
- FTC_Chunk_Cache_Done( FTC_Chunk_Cache cache );
-
- FT_EXPORT( FT_Error )
- FTC_Chunk_Cache_Lookup( FTC_Chunk_Cache cache,
- FT_Pointer type,
- FT_UInt gindex,
- FTC_ChunkNode *anode,
- FT_UInt *aindex );
-
-
-FT_END_HEADER
-
-#endif /* __FTCCHUNK_H__ */
-
-
-/* END */
projects / rrdtool.git / blobdiff