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Code Issues 9 Releases Wiki Activity

* include/freetype/cache/ftccache.h, 

include/freetype/cache/ftcmru.h,
        include/freetype/cache/ftcglyph.h,
        src/cache/ftcbasic.c,
        src/cache/ftccache.c,
        src/cache/ftccmap.c,
        src/cache/ftcmanag.c:

          additional speed optimization to the cache sub-system. It is
          now up to 70% faster than the one in the previous table
          release (i.e. 2.1.7). Note that the API did slightly change
          though.
This commit is contained in:
David Turner 2003-12-23 23:54:00 +00:00
parent 48b6ddb8a8
commit 023612221e
8 changed files with 2812 additions and 2604 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

444
include/freetype/cache/ftccache.h vendored
View File

@ -1,193 +1,251 @@
/***************************************************************************/
/* */
/* ftccache.h */
/* */
/* FreeType internal cache interface (specification). */
/* */
/* Copyright 2000-2001, 2002 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. */
/* */
/***************************************************************************/
#ifndef __FTCCACHE_H__
#define __FTCCACHE_H__
#include FT_CACHE_INTERNAL_MRU_H
FT_BEGIN_HEADER
/* handle to cache object */
typedef struct FTC_CacheRec_* FTC_Cache;
/* handle to cache class */
typedef const struct FTC_CacheClassRec_* FTC_CacheClass;
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** CACHE NODE DEFINITIONS *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/* */
/* Each cache controls one or more cache nodes. Each node is part of */
/* the global_lru list of the manager. Its `data' field however is used */
/* as a reference count for now. */
/* */
/* A node can be anything, depending on the type of information held by */
/* the cache. It can be an individual glyph image, a set of bitmaps */
/* glyphs for a given size, some metrics, etc. */
/* */
/*************************************************************************/
/* structure size should be 20 bytes on 32-bits machines */
typedef struct FTC_NodeRec_
{
FTC_MruNodeRec mru; /* circular mru list pointer */
FTC_Node link; /* used for hashing */
FT_UInt32 hash; /* used for hashing too */
FT_UShort cache_index; /* index of cache the node belongs to */
FT_Short ref_count; /* reference count for this node */
} FTC_NodeRec;
#define FTC_NODE( x ) ( (FTC_Node)(x) )
#define FTC_NODE_P( x ) ( (FTC_Node*)(x) )
#define FTC_NODE__NEXT(x) FTC_NODE( (x)->mru.next )
#define FTC_NODE__PREV(x) FTC_NODE( (x)->mru.prev )
/*************************************************************************/
/* */
/* 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. */
/* */
/* reserved for manager's use */
FT_EXPORT( void )
ftc_node_destroy( FTC_Node node,
FTC_Manager manager );
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** CACHE DEFINITIONS *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/* initialize a new cache node */
typedef FT_Error (*FTC_Node_NewFunc)( FTC_Node *pnode,
FT_Pointer query,
FTC_Cache cache );
typedef FT_ULong (*FTC_Node_WeightFunc)( FTC_Node node,
FTC_Cache cache );
/* compare a node to a given key pair */
typedef FT_Bool (*FTC_Node_CompareFunc)( FTC_Node node,
FT_Pointer key,
FTC_Cache cache );
typedef void (*FTC_Node_FreeFunc)( FTC_Node node,
FTC_Cache cache );
typedef FT_Error (*FTC_Cache_InitFunc)( FTC_Cache cache );
typedef void (*FTC_Cache_DoneFunc)( FTC_Cache cache );
typedef struct FTC_CacheClassRec_
{
FTC_Node_NewFunc node_new;
FTC_Node_WeightFunc node_weight;
FTC_Node_CompareFunc node_compare;
FTC_Node_CompareFunc node_remove_faceid;
FTC_Node_FreeFunc node_free;
FT_UInt cache_size;
FTC_Cache_InitFunc cache_init;
FTC_Cache_DoneFunc cache_done;
} FTC_CacheClassRec;
/* each cache really implements a dynamic hash table to manage its nodes */
typedef struct FTC_CacheRec_
{
FT_UFast p;
FT_UFast mask;
FT_Long slack;
FTC_Node* buckets;
FTC_CacheClassRec clazz; /* local copy, for speed */
FTC_Manager manager;
FT_Memory memory;
FT_UInt index; /* in manager's table */
FTC_CacheClass org_class; /* original class pointer */
} FTC_CacheRec;
#define FTC_CACHE( x ) ( (FTC_Cache)(x) )
#define FTC_CACHE_P( x ) ( (FTC_Cache*)(x) )
/* default cache initialize */
FT_EXPORT( FT_Error )
FTC_Cache_Init( FTC_Cache cache );
/* default cache finalizer */
FT_EXPORT( void )
FTC_Cache_Done( FTC_Cache cache );
/* call this function to lookup the cache. if no corresponding
* node is found, a new one is automatically created. This function
* is capable of flushing the cache adequately to make room for the
* new cache object.
*/
FT_EXPORT( FT_Error )
FTC_Cache_Lookup( FTC_Cache cache,
FT_UInt32 hash,
FT_Pointer query,
FTC_Node *anode );
/* remove all nodes that relate to a given face_id. This is useful
* when un-installing fonts. Note that if a cache node relates to
* the face_id, but is locked (i.e. has 'ref_count > 0'), the node
* will _not_ be destroyed, but its internal face_id reference will
* be modified.
*
* the end result will be that the node will never come back
* in further lookup requests, and will be flushed on demand from
* the cache normally when its reference count reaches 0
*/
FT_EXPORT( void )
FTC_Cache_RemoveFaceID( FTC_Cache cache,
FTC_FaceID face_id );
/* */
FT_END_HEADER
#endif /* __FTCCACHE_H__ */
/* END */
/***************************************************************************/
/* */
/* ftccache.h */
/* */
/* FreeType internal cache interface (specification). */
/* */
/* Copyright 2000-2001, 2002 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. */
/* */
/***************************************************************************/
#ifndef __FTCCACHE_H__
#define __FTCCACHE_H__
#include FT_CACHE_INTERNAL_MRU_H
FT_BEGIN_HEADER
/* handle to cache object */
typedef struct FTC_CacheRec_* FTC_Cache;
/* handle to cache class */
typedef const struct FTC_CacheClassRec_* FTC_CacheClass;
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** CACHE NODE DEFINITIONS *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/* */
/* Each cache controls one or more cache nodes. Each node is part of */
/* the global_lru list of the manager. Its `data' field however is used */
/* as a reference count for now. */
/* */
/* A node can be anything, depending on the type of information held by */
/* the cache. It can be an individual glyph image, a set of bitmaps */
/* glyphs for a given size, some metrics, etc. */
/* */
/*************************************************************************/
/* structure size should be 20 bytes on 32-bits machines */
typedef struct FTC_NodeRec_
{
FTC_MruNodeRec mru; /* circular mru list pointer */
FTC_Node link; /* used for hashing */
FT_UInt32 hash; /* used for hashing too */
FT_UShort cache_index; /* index of cache the node belongs to */
FT_Short ref_count; /* reference count for this node */
} FTC_NodeRec;
#define FTC_NODE( x ) ( (FTC_Node)(x) )
#define FTC_NODE_P( x ) ( (FTC_Node*)(x) )
#define FTC_NODE__NEXT(x) FTC_NODE( (x)->mru.next )
#define FTC_NODE__PREV(x) FTC_NODE( (x)->mru.prev )
/*************************************************************************/
/* */
/* 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. */
/* */
/* reserved for manager's use */
FT_EXPORT( void )
ftc_node_destroy( FTC_Node node,
FTC_Manager manager );
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** CACHE DEFINITIONS *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/* initialize a new cache node */
typedef FT_Error (*FTC_Node_NewFunc)( FTC_Node *pnode,
FT_Pointer query,
FTC_Cache cache );
typedef FT_ULong (*FTC_Node_WeightFunc)( FTC_Node node,
FTC_Cache cache );
/* compare a node to a given key pair */
typedef FT_Bool (*FTC_Node_CompareFunc)( FTC_Node node,
FT_Pointer key,
FTC_Cache cache );
typedef void (*FTC_Node_FreeFunc)( FTC_Node node,
FTC_Cache cache );
typedef FT_Error (*FTC_Cache_InitFunc)( FTC_Cache cache );
typedef void (*FTC_Cache_DoneFunc)( FTC_Cache cache );
typedef struct FTC_CacheClassRec_
{
FTC_Node_NewFunc node_new;
FTC_Node_WeightFunc node_weight;
FTC_Node_CompareFunc node_compare;
FTC_Node_CompareFunc node_remove_faceid;
FTC_Node_FreeFunc node_free;
FT_UInt cache_size;
FTC_Cache_InitFunc cache_init;
FTC_Cache_DoneFunc cache_done;
} FTC_CacheClassRec;
/* each cache really implements a dynamic hash table to manage its nodes */
typedef struct FTC_CacheRec_
{
FT_UFast p;
FT_UFast mask;
FT_Long slack;
FTC_Node* buckets;
FTC_CacheClassRec clazz; /* local copy, for speed */
FTC_Manager manager;
FT_Memory memory;
FT_UInt index; /* in manager's table */
FTC_CacheClass org_class; /* original class pointer */
} FTC_CacheRec;
#define FTC_CACHE( x ) ( (FTC_Cache)(x) )
#define FTC_CACHE_P( x ) ( (FTC_Cache*)(x) )
/* default cache initialize */
FT_EXPORT( FT_Error )
FTC_Cache_Init( FTC_Cache cache );
/* default cache finalizer */
FT_EXPORT( void )
FTC_Cache_Done( FTC_Cache cache );
/* call this function to lookup the cache. if no corresponding
* node is found, a new one is automatically created. This function
* is capable of flushing the cache adequately to make room for the
* new cache object.
*/
FT_EXPORT( FT_Error )
FTC_Cache_Lookup( FTC_Cache cache,
FT_UInt32 hash,
FT_Pointer query,
FTC_Node *anode );
FT_EXPORT( FT_Error )
FTC_Cache_NewNode( FTC_Cache cache,
FT_UInt32 hash,
FT_Pointer query,
FTC_Node *anode );
/* remove all nodes that relate to a given face_id. This is useful
* when un-installing fonts. Note that if a cache node relates to
* the face_id, but is locked (i.e. has 'ref_count > 0'), the node
* will _not_ be destroyed, but its internal face_id reference will
* be modified.
*
* the end result will be that the node will never come back
* in further lookup requests, and will be flushed on demand from
* the cache normally when its reference count reaches 0
*/
FT_EXPORT( void )
FTC_Cache_RemoveFaceID( FTC_Cache cache,
FTC_FaceID face_id );
#define FTC_CACHE_LOOKUP_CMP( cache, nodecmp, hash, query, node, error ) \
FT_BEGIN_STMNT \
FTC_Node *_bucket, *_pnode, _node; \
FTC_Cache _cache = FTC_CACHE(cache); \
FT_UInt32 _hash = (FT_UInt32)(hash); \
FTC_Node_CompareFunc _nodcomp = (FTC_Node_CompareFunc)(nodecmp); \
FT_UInt _idx; \
\
error = 0; \
_idx = _hash & _cache->mask; \
if ( _idx < _cache->p ) \
_idx = _hash & (_cache->mask*2 + 1); \
\
_bucket = _pnode = _cache->buckets + _idx; \
for (;;) \
{ \
_node = *_pnode; \
if ( _node == NULL ) \
goto _NewNode; \
\
if ( _node->hash == _hash && _nodcomp( _node, query, _cache ) ) \
break; \
\
_pnode = &_node->link; \
} \
\
if ( _node != *_bucket ) \
{ \
*_pnode = _node->link; \
_node->link = *_bucket; \
*_bucket = _node; \
} \
\
{ \
FTC_Manager _manager = _cache->manager; \
\
if ( _node != _manager->nodes_list ) \
FTC_MruNode_Up( (FTC_MruNode*)&_manager->nodes_list, \
(FTC_MruNode)_node ); \
} \
goto _Ok; \
\
_NewNode: \
error = FTC_Cache_NewNode( _cache, _hash, query, &_node ); \
\
_Ok: \
*(FTC_Node*)&(node) = _node; \
FT_END_STMNT
/* */
FT_END_HEADER
#endif /* __FTCCACHE_H__ */
/* END */

561
include/freetype/cache/ftcglyph.h vendored
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@ -1,266 +1,295 @@
/***************************************************************************/
/* */
/* ftcglyph.h */
/* */
/* FreeType abstract glyph cache (specification). */
/* */
/* Copyright 2000-2001, 2003 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. */
/* */
/***************************************************************************/
/*
*
* FTC_GCache is an _abstract_ cache object optimized to store glyph
* data. It works as follows:
*
* - it manages FTC_GNode objects. Each one of them can hold one or more
* glyph "items". Item types are not specified in the FTC_GCache but in
* classes that extend it
*
* - glyph attributes, like face_id, character size, render mode, etc..
* can be grouped in abstract "glyph families". This avoids storing
* the attributes within the FTC_GCache, since it is likely that many
* FTC_GNodes will belong to the same family in typical uses
*
* - each FTC_GNode is thus a FTC_Node with two additionnal fields:
*
* * gindex :: a glyph index, or the first index in a glyph range
* * family :: a pointer to a glyph "family"
*
* - Family types are not fully specific in the FTC_Family type, but
* by classes that extend it.
*
* Note that both FTC_ImageCache and FTC_SBitCache extend FTC_GCache. They
* share an FTC_Family sub-class called FTC_BasicFamily which is used to
* store the following data: face_id, pixel/point sizes, load flags.
* for more details, see the file "src/cache/ftcbasic.c"
*
* Client applications can extend FTC_GNode with their own FTC_GNode
* and FTC_Family sub-classes to implement more complex caches (e.g.
* handling automatic synthetis, like obliquing & emboldening, colored
* glyphs, etc...)
*
* See also the FTC_ICache & FTC_SCache classes in "ftcimage.h" and
* "ftcsbits.h", which both extend FTC_GCache with additionnal
* optimizations.
*
*
* a typical FTC_GCache implementation must provide at least the following:
*
* - FTC_GNode sub-class, e.g. MyNode, with relevant methods, i.e:
* my_node_new ( must call FTC_GNode_Init )
* my_node_free ( must call FTC_GNode_Done )
* my_node_compare ( must call FTC_GNode_Compare )
* my_node_remove_faceid ( must call ftc_gnode_unselect in case
* of match )
*
*
* - FTC_Family sub-class, e.g. MyFamily, with relevant methods, e.g.:
* my_family_compare
* my_family_init
* my_family_reset (optional)
* my_family_done
*
* - FTC_GQuery sub-class, e.g. MyQuery, to hold cache-specific query
* data.
*
* - provide constant structures for a FTC_GNodeClass
*
* - MyCacheNew() can be implemented easily as a call to the convenience
* function FTC_GCache_New
*
* - implement MyCacheLookup with a call to FTC_GCache_Lookup. This
* function will automatically:
*
* - search for the corresponding family in the cache, or create
* a new one if necessary. put it in FTC_GQUERY(myquery).family
*
* - call FTC_Cache_Lookup
*
* if it returns NULL, you should create a new node, then call
* ftc_cache_add as usual.
*/
/*************************************************************************/
/* */
/* Important: The functions defined in this file are only used to */
/* implement an abstract glyph cache class. You need to */
/* provide additional logic to implement a complete cache. */
/* */
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/********* *********/
/********* WARNING, THIS IS BETA CODE. *********/
/********* *********/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
#ifndef __FTCGLYPH_H__
#define __FTCGLYPH_H__
#include <ft2build.h>
#include FT_CACHE_INTERNAL_MANAGER_H
FT_BEGIN_HEADER
/*
* we can group glyph in "families". Each family correspond to a
* given face id, character size, transform, etc...
*
* families are implemented as MRU list nodes. They are reference-counted
*/
typedef struct FTC_FamilyRec_
{
FTC_MruNodeRec mrunode;
FT_UInt num_nodes; /* current number of nodes in this family */
FTC_Cache cache;
FTC_MruListClass clazz;
} FTC_FamilyRec, *FTC_Family;
#define FTC_FAMILY(x) ( (FTC_Family)(x) )
#define FTC_FAMILY_P(x) ( (FTC_Family*)(x) )
typedef struct FTC_GNodeRec_
{
FTC_NodeRec node;
FTC_Family family;
FT_UInt gindex;
} FTC_GNodeRec, *FTC_GNode;
#define FTC_GNODE( x ) ( (FTC_GNode)(x) )
#define FTC_GNODE_P( x ) ( (FTC_GNode*)(x) )
typedef struct FTC_GQueryRec_
{
FT_UInt gindex;
FTC_Family family;
} FTC_GQueryRec, *FTC_GQuery;
#define FTC_GQUERY( x ) ( (FTC_GQuery)(x) )
/*************************************************************************/
/* */
/* 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. */
/* */
/* must be called by derived FTC_Node_InitFunc routines */
FT_EXPORT( void )
FTC_GNode_Init( FTC_GNode node,
FT_UInt gindex, /* glyph index for node */
FTC_Family family );
/* returns TRUE iff the query's glyph index correspond to the node; */
/* this assumes that the "family" and "hash" fields of the query are */
/* already correctly set */
FT_EXPORT( FT_Bool )
FTC_GNode_Compare( FTC_GNode gnode,
FTC_GQuery gquery );
/* call this function to clear a node's family. this is necessary
* to implement the "node_remove_faceid" cache method correctly
*/
FT_EXPORT( void )
FTC_GNode_UnselectFamily( FTC_GNode gnode,
FTC_Cache cache );
/* must be called by derived FTC_Node_DoneFunc routines */
FT_EXPORT( void )
FTC_GNode_Done( FTC_GNode node,
FTC_Cache cache );
FT_EXPORT( void )
FTC_Family_Init( FTC_Family family,
FTC_Cache cache );
typedef struct FTC_GCacheRec_
{
FTC_CacheRec cache;
FTC_MruListRec families;
} FTC_GCacheRec, *FTC_GCache;
#define FTC_GCACHE(x) ((FTC_GCache)(x))
/* can be used as @FTC_Cache_InitFunc */
FT_EXPORT( FT_Error )
FTC_GCache_Init( FTC_GCache cache );
/* can be used as @FTC_Cache_DoneFunc */
FT_EXPORT( void )
FTC_GCache_Done( FTC_GCache cache );
/* the glyph cache class adds fields for the family implementation */
typedef struct FTC_GCacheClassRec_
{
FTC_CacheClassRec clazz;
FTC_MruListClass family_class;
} FTC_GCacheClassRec;
typedef const FTC_GCacheClassRec* FTC_GCacheClass;
#define FTC_GCACHE_CLASS(x) ((FTC_GCacheClass)(x))
#define FTC_CACHE__GCACHE_CLASS(x) FTC_GCACHE_CLASS( FTC_CACHE(x)->org_class )
#define FTC_CACHE__FAMILY_CLASS(x) ((FTC_MruListClass) FTC_CACHE__GCACHE_CLASS(x)->family_class)
/* convenience function. use instead of FTC_Manager_Register_Cache */
FT_EXPORT( FT_Error )
FTC_GCache_New( FTC_Manager manager,
FTC_GCacheClass clazz,
FTC_GCache *acache );
FT_EXPORT( FT_Error )
FTC_GCache_Lookup( FTC_GCache cache,
FT_UInt32 hash,
FT_UInt gindex,
FTC_GQuery query,
FTC_Node *anode );
/* */
FT_END_HEADER
#endif /* __FTCGLYPH_H__ */
/* END */
/***************************************************************************/
/* */
/* ftcglyph.h */
/* */
/* FreeType abstract glyph cache (specification). */
/* */
/* Copyright 2000-2001, 2003 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. */
/* */
/***************************************************************************/
/*
*
* FTC_GCache is an _abstract_ cache object optimized to store glyph
* data. It works as follows:
*
* - it manages FTC_GNode objects. Each one of them can hold one or more
* glyph "items". Item types are not specified in the FTC_GCache but in
* classes that extend it
*
* - glyph attributes, like face_id, character size, render mode, etc..
* can be grouped in abstract "glyph families". This avoids storing
* the attributes within the FTC_GCache, since it is likely that many
* FTC_GNodes will belong to the same family in typical uses
*
* - each FTC_GNode is thus a FTC_Node with two additionnal fields:
*
* * gindex :: a glyph index, or the first index in a glyph range
* * family :: a pointer to a glyph "family"
*
* - Family types are not fully specific in the FTC_Family type, but
* by classes that extend it.
*
* Note that both FTC_ImageCache and FTC_SBitCache extend FTC_GCache. They
* share an FTC_Family sub-class called FTC_BasicFamily which is used to
* store the following data: face_id, pixel/point sizes, load flags.
* for more details, see the file "src/cache/ftcbasic.c"
*
* Client applications can extend FTC_GNode with their own FTC_GNode
* and FTC_Family sub-classes to implement more complex caches (e.g.
* handling automatic synthetis, like obliquing & emboldening, colored
* glyphs, etc...)
*
* See also the FTC_ICache & FTC_SCache classes in "ftcimage.h" and
* "ftcsbits.h", which both extend FTC_GCache with additionnal
* optimizations.
*
*
* a typical FTC_GCache implementation must provide at least the following:
*
* - FTC_GNode sub-class, e.g. MyNode, with relevant methods, i.e:
* my_node_new ( must call FTC_GNode_Init )
* my_node_free ( must call FTC_GNode_Done )
* my_node_compare ( must call FTC_GNode_Compare )
* my_node_remove_faceid ( must call ftc_gnode_unselect in case
* of match )
*
*
* - FTC_Family sub-class, e.g. MyFamily, with relevant methods, e.g.:
* my_family_compare
* my_family_init
* my_family_reset (optional)
* my_family_done
*
* - FTC_GQuery sub-class, e.g. MyQuery, to hold cache-specific query
* data.
*
* - provide constant structures for a FTC_GNodeClass
*
* - MyCacheNew() can be implemented easily as a call to the convenience
* function FTC_GCache_New
*
* - implement MyCacheLookup with a call to FTC_GCache_Lookup. This
* function will automatically:
*
* - search for the corresponding family in the cache, or create
* a new one if necessary. put it in FTC_GQUERY(myquery).family
*
* - call FTC_Cache_Lookup
*
* if it returns NULL, you should create a new node, then call
* ftc_cache_add as usual.
*/
/*************************************************************************/
/* */
/* Important: The functions defined in this file are only used to */
/* implement an abstract glyph cache class. You need to */
/* provide additional logic to implement a complete cache. */
/* */
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/********* *********/
/********* WARNING, THIS IS BETA CODE. *********/
/********* *********/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
#ifndef __FTCGLYPH_H__
#define __FTCGLYPH_H__
#include <ft2build.h>
#include FT_CACHE_INTERNAL_MANAGER_H
FT_BEGIN_HEADER
/*
* we can group glyph in "families". Each family correspond to a
* given face id, character size, transform, etc...
*
* families are implemented as MRU list nodes. They are reference-counted
*/
typedef struct FTC_FamilyRec_
{
FTC_MruNodeRec mrunode;
FT_UInt num_nodes; /* current number of nodes in this family */
FTC_Cache cache;
FTC_MruListClass clazz;
} FTC_FamilyRec, *FTC_Family;
#define FTC_FAMILY(x) ( (FTC_Family)(x) )
#define FTC_FAMILY_P(x) ( (FTC_Family*)(x) )
typedef struct FTC_GNodeRec_
{
FTC_NodeRec node;
FTC_Family family;
FT_UInt gindex;
} FTC_GNodeRec, *FTC_GNode;
#define FTC_GNODE( x ) ( (FTC_GNode)(x) )
#define FTC_GNODE_P( x ) ( (FTC_GNode*)(x) )
typedef struct FTC_GQueryRec_
{
FT_UInt gindex;
FTC_Family family;
} FTC_GQueryRec, *FTC_GQuery;
#define FTC_GQUERY( x ) ( (FTC_GQuery)(x) )
/*************************************************************************/
/* */
/* 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. */
/* */
/* must be called by derived FTC_Node_InitFunc routines */
FT_EXPORT( void )
FTC_GNode_Init( FTC_GNode node,
FT_UInt gindex, /* glyph index for node */
FTC_Family family );
/* returns TRUE iff the query's glyph index correspond to the node; */
/* this assumes that the "family" and "hash" fields of the query are */
/* already correctly set */
FT_EXPORT( FT_Bool )
FTC_GNode_Compare( FTC_GNode gnode,
FTC_GQuery gquery );
/* call this function to clear a node's family. this is necessary
* to implement the "node_remove_faceid" cache method correctly
*/
FT_EXPORT( void )
FTC_GNode_UnselectFamily( FTC_GNode gnode,
FTC_Cache cache );
/* must be called by derived FTC_Node_DoneFunc routines */
FT_EXPORT( void )
FTC_GNode_Done( FTC_GNode node,
FTC_Cache cache );
FT_EXPORT( void )
FTC_Family_Init( FTC_Family family,
FTC_Cache cache );
typedef struct FTC_GCacheRec_
{
FTC_CacheRec cache;
FTC_MruListRec families;
} FTC_GCacheRec, *FTC_GCache;
#define FTC_GCACHE(x) ((FTC_GCache)(x))
/* can be used as @FTC_Cache_InitFunc */
FT_EXPORT( FT_Error )
FTC_GCache_Init( FTC_GCache cache );
/* can be used as @FTC_Cache_DoneFunc */
FT_EXPORT( void )
FTC_GCache_Done( FTC_GCache cache );
/* the glyph cache class adds fields for the family implementation */
typedef struct FTC_GCacheClassRec_
{
FTC_CacheClassRec clazz;
FTC_MruListClass family_class;
} FTC_GCacheClassRec;
typedef const FTC_GCacheClassRec* FTC_GCacheClass;
#define FTC_GCACHE_CLASS(x) ((FTC_GCacheClass)(x))
#define FTC_CACHE__GCACHE_CLASS(x) FTC_GCACHE_CLASS( FTC_CACHE(x)->org_class )
#define FTC_CACHE__FAMILY_CLASS(x) ((FTC_MruListClass) FTC_CACHE__GCACHE_CLASS(x)->family_class)
/* convenience function. use instead of FTC_Manager_Register_Cache */
FT_EXPORT( FT_Error )
FTC_GCache_New( FTC_Manager manager,
FTC_GCacheClass clazz,
FTC_GCache *acache );
FT_EXPORT( FT_Error )
FTC_GCache_Lookup( FTC_GCache cache,
FT_UInt32 hash,
FT_UInt gindex,
FTC_GQuery query,
FTC_Node *anode );
#define FTC_GCACHE_LOOKUP_CMP( cache, famcmp, nodecmp, hash, gindex, query, node, error ) \
FT_BEGIN_STMNT \
FTC_GCache _gcache = FTC_GCACHE( cache ); \
FTC_Family _family; \
FTC_GQuery _gquery = (FTC_GQuery)( query ); \
FTC_MruNode_CompareFunc _fcompare = (FTC_MruNode_CompareFunc)(famcmp); \
\
_gquery->gindex = (gindex); \
\
FTC_MRULIST_LOOP( &_gcache->families, _family ) \
{ \
if ( _fcompare( (FTC_MruNode)_family, _gquery ) ) \
{ \
_gquery->family = _family; \
goto _FamilyFound; \
} \
} \
FTC_MRULIST_LOOP_END(); \
\
error = FTC_MruList_New( &_gcache->families, \
_gquery, \
(FTC_MruNode*)&_gquery->family ); \
if ( !error ) \
{ \
_FamilyFound: \
FTC_CACHE_LOOKUP_CMP( cache, nodecmp, hash, query, node, error ); \
} \
FT_END_STMNT
/* */
FT_END_HEADER
#endif /* __FTCGLYPH_H__ */
/* END */

392
include/freetype/cache/ftcmru.h vendored
View File

@ -1,165 +1,227 @@
/***************************************************************************/
/* */
/* ftcmru.h */
/* */
/* Simple MRU list-cache (specification). */
/* */
/* Copyright 2000-2001, 2003 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. */
/* */
/***************************************************************************/
/*************************************************************************/
/* */
/* An MRU is a list that cannot hold more than a certain number of */
/* elements (`max_elements'). All elements in the list are sorted in */
/* least-recently-used order, i.e., the `oldest' element is at the tail */
/* of the list. */
/* */
/* When doing a lookup (either through `Lookup()' or `Lookup_Node()'), */
/* the list is searched for an element with the corresponding key. If */
/* it is found, the element is moved to the head of the list and is */
/* returned. */
/* */
/* If no corresponding element is found, the lookup routine will try to */
/* obtain a new element with the relevant key. If the list is already */
/* full, the oldest element from the list is discarded and replaced by a */
/* new one; a new element is added to the list otherwise. */
/* */
/* Note that it is possible to pre-allocate the element list nodes. */
/* This is handy if `max_elements' is sufficiently small, as it saves */
/* allocations/releases during the lookup process. */
/* */
/*************************************************************************/
#ifndef __FTCMRU_H__
#define __FTCMRU_H__
#include <ft2build.h>
#include FT_FREETYPE_H
#ifdef FREETYPE_H
#error "freetype.h of FreeType 1 has been loaded!"
#error "Please fix the directory search order for header files"
#error "so that freetype.h of FreeType 2 is found first."
#endif
#define xxFT_DEBUG_ERROR
FT_BEGIN_HEADER
typedef struct FTC_MruNodeRec_* FTC_MruNode;
typedef struct FTC_MruNodeRec_
{
FTC_MruNode next;
FTC_MruNode prev;
} FTC_MruNodeRec;
FT_EXPORT( void )
FTC_MruNode_Prepend( FTC_MruNode *plist,
FTC_MruNode node );
FT_EXPORT( void )
FTC_MruNode_Up( FTC_MruNode *plist,
FTC_MruNode node );
FT_EXPORT( void )
FTC_MruNode_Remove( FTC_MruNode *plist,
FTC_MruNode node );
typedef struct FTC_MruListRec_* FTC_MruList;
typedef struct FTC_MruListClassRec_ const * FTC_MruListClass;
typedef FT_Int (*FTC_MruNode_CompareFunc)( FTC_MruNode node,
FT_Pointer key );
typedef FT_Error (*FTC_MruNode_InitFunc)( FTC_MruNode node,
FT_Pointer key,
FT_Pointer data );
typedef FT_Error (*FTC_MruNode_ResetFunc)( FTC_MruNode node,
FT_Pointer key,
FT_Pointer data );
typedef void (*FTC_MruNode_DoneFunc)( FTC_MruNode node,
FT_Pointer data );
typedef struct FTC_MruListClassRec_
{
FT_UInt node_size;
FTC_MruNode_CompareFunc node_compare;
FTC_MruNode_InitFunc node_init;
FTC_MruNode_ResetFunc node_reset;
FTC_MruNode_DoneFunc node_done;
} FTC_MruListClassRec;
typedef struct FTC_MruListRec_
{
FT_UInt num_nodes;
FT_UInt max_nodes;
FTC_MruNode nodes;
FT_Pointer data;
FTC_MruListClassRec clazz;
FT_Memory memory;
} FTC_MruListRec;
FT_EXPORT( void )
FTC_MruList_Init( FTC_MruList list,
FTC_MruListClass clazz,
FT_UInt max_nodes,
FT_Pointer data,
FT_Memory memory );
FT_EXPORT( void )
FTC_MruList_Reset( FTC_MruList list );
FT_EXPORT( void )
FTC_MruList_Done( FTC_MruList list );
FT_EXPORT( FTC_MruNode )
FTC_MruList_Find( FTC_MruList list,
FT_Pointer key );
FT_EXPORT( FT_Error )
FTC_MruList_New( FTC_MruList list,
FT_Pointer key,
FTC_MruNode *anode );
FT_EXPORT( FT_Error )
FTC_MruList_Lookup( FTC_MruList list,
FT_Pointer key,
FTC_MruNode *pnode );
FT_EXPORT( void )
FTC_MruList_Remove( FTC_MruList list,
FTC_MruNode node );
FT_EXPORT( void )
FTC_MruList_RemoveSelection( FTC_MruList list,
FTC_MruNode_CompareFunc select,
FT_Pointer key );
/* */
FT_END_HEADER
#endif /* __FTCMRU_H__ */
/* END */
/***************************************************************************/
/* */
/* ftcmru.h */
/* */
/* Simple MRU list-cache (specification). */
/* */
/* Copyright 2000-2001, 2003 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. */
/* */
/***************************************************************************/
/*************************************************************************/
/* */
/* An MRU is a list that cannot hold more than a certain number of */
/* elements (`max_elements'). All elements in the list are sorted in */
/* least-recently-used order, i.e., the `oldest' element is at the tail */
/* of the list. */
/* */
/* When doing a lookup (either through `Lookup()' or `Lookup_Node()'), */
/* the list is searched for an element with the corresponding key. If */
/* it is found, the element is moved to the head of the list and is */
/* returned. */
/* */
/* If no corresponding element is found, the lookup routine will try to */
/* obtain a new element with the relevant key. If the list is already */
/* full, the oldest element from the list is discarded and replaced by a */
/* new one; a new element is added to the list otherwise. */
/* */
/* Note that it is possible to pre-allocate the element list nodes. */
/* This is handy if `max_elements' is sufficiently small, as it saves */
/* allocations/releases during the lookup process. */
/* */
/*************************************************************************/
#ifndef __FTCMRU_H__
#define __FTCMRU_H__
#include <ft2build.h>
#include FT_FREETYPE_H
#ifdef FREETYPE_H
#error "freetype.h of FreeType 1 has been loaded!"
#error "Please fix the directory search order for header files"
#error "so that freetype.h of FreeType 2 is found first."
#endif
#define xxFT_DEBUG_ERROR
#define FTC_INLINE
FT_BEGIN_HEADER
typedef struct FTC_MruNodeRec_* FTC_MruNode;
typedef struct FTC_MruNodeRec_
{
FTC_MruNode next;
FTC_MruNode prev;
} FTC_MruNodeRec;
FT_EXPORT( void )
FTC_MruNode_Prepend( FTC_MruNode *plist,
FTC_MruNode node );
FT_EXPORT( void )
FTC_MruNode_Up( FTC_MruNode *plist,
FTC_MruNode node );
FT_EXPORT( void )
FTC_MruNode_Remove( FTC_MruNode *plist,
FTC_MruNode node );
typedef struct FTC_MruListRec_* FTC_MruList;
typedef struct FTC_MruListClassRec_ const * FTC_MruListClass;
typedef FT_Int (*FTC_MruNode_CompareFunc)( FTC_MruNode node,
FT_Pointer key );
typedef FT_Error (*FTC_MruNode_InitFunc)( FTC_MruNode node,
FT_Pointer key,
FT_Pointer data );
typedef FT_Error (*FTC_MruNode_ResetFunc)( FTC_MruNode node,
FT_Pointer key,
FT_Pointer data );
typedef void (*FTC_MruNode_DoneFunc)( FTC_MruNode node,
FT_Pointer data );
typedef struct FTC_MruListClassRec_
{
FT_UInt node_size;
FTC_MruNode_CompareFunc node_compare;
FTC_MruNode_InitFunc node_init;
FTC_MruNode_ResetFunc node_reset;
FTC_MruNode_DoneFunc node_done;
} FTC_MruListClassRec;
typedef struct FTC_MruListRec_
{
FT_UInt num_nodes;
FT_UInt max_nodes;
FTC_MruNode nodes;
FT_Pointer data;
FTC_MruListClassRec clazz;
FT_Memory memory;
} FTC_MruListRec;
FT_EXPORT( void )
FTC_MruList_Init( FTC_MruList list,
FTC_MruListClass clazz,
FT_UInt max_nodes,
FT_Pointer data,
FT_Memory memory );
FT_EXPORT( void )
FTC_MruList_Reset( FTC_MruList list );
FT_EXPORT( void )
FTC_MruList_Done( FTC_MruList list );
FT_EXPORT( FTC_MruNode )
FTC_MruList_Find( FTC_MruList list,
FT_Pointer key );
FT_EXPORT( FT_Error )
FTC_MruList_New( FTC_MruList list,
FT_Pointer key,
FTC_MruNode *anode );
FT_EXPORT( FT_Error )
FTC_MruList_Lookup( FTC_MruList list,
FT_Pointer key,
FTC_MruNode *pnode );
FT_EXPORT( void )
FTC_MruList_Remove( FTC_MruList list,
FTC_MruNode node );
FT_EXPORT( void )
FTC_MruList_RemoveSelection( FTC_MruList list,
FTC_MruNode_CompareFunc select,
FT_Pointer key );
#ifdef FTC_INLINE
#define FTC_MRULIST_LOOKUP( list, key, node, error ) \
FT_BEGIN_STMNT \
FTC_MruNode_CompareFunc _compare = (list)->clazz.node_compare; \
FTC_MruNode _first, _node; \
\
error = 0; \
_first = (list)->nodes; \
_node = NULL; \
\
if ( _first ) \
{ \
_node = _first; \
do \
{ \
if ( _compare( _node, (key) ) ) \
{ \
*(FTC_MruNode*)&(node) = _node; \
goto _Ok; \
} \
_node = _node->next; \
} \
while ( _node != _first) ; \
} \
\
error = FTC_MruList_New( (list), (key), (FTC_MruNode*)&(node) ); \
_Ok: \
; \
FT_END_STMNT
#else /* !FTC_INLINE */
#define FTC_MRULIST_LOOKUP_CMP( list, key, node, error ) \
error = FTC_MruList_Lookup( (list), (key), (FTC_MruNode*)&(node) )
#endif /* !FTC_INLINE */
#define FTC_MRULIST_LOOP( list, node ) \
FT_BEGIN_STMNT \
FTC_MruNode _first = (list)->nodes; \
\
if ( _first ) \
{ \
FTC_MruNode _node = _first; \
do \
{ \
*(FTC_MruNode*)&(node) = _node;
#define FTC_MRULIST_LOOP_END() \
_node = _node->next; \
} \
while ( _node != _first ); \
} \
FT_END_STMNT
/* */
FT_END_HEADER
#endif /* __FTCMRU_H__ */
/* END */

766
src/cache/ftcbasic.c vendored
View File

@ -1,373 +1,393 @@
#include <ft2build.h>
#include FT_CACHE_H
#include FT_CACHE_INTERNAL_GLYPH_H
#include FT_CACHE_INTERNAL_IMAGE_H
#include FT_CACHE_INTERNAL_SBITS_H
#include FT_INTERNAL_MEMORY_H
#include "ftcerror.h"
/*
* Basic Families
*
*
*/
typedef struct FTC_BasicAttrRec_
{
FTC_ScalerRec scaler;
FT_UInt load_flags;
} FTC_BasicAttrRec, *FTC_BasicAttrs;
#define FTC_BASIC_ATTR_COMPARE(a,b) \
( FTC_SCALER_COMPARE( &(a)->scaler, &(b)->scaler ) && \
(a)->load_flags == (b)->load_flags )
#define FTC_BASIC_ATTR_HASH(a) \
( FTC_SCALER_HASH(&(a)->scaler) + 31*(a)->load_flags )
typedef struct FTC_BasicQueryRec_
{
FTC_GQueryRec gquery;
FTC_BasicAttrRec attrs;
} FTC_BasicQueryRec, *FTC_BasicQuery;
typedef struct FTC_BasicFamilyRec_
{
FTC_FamilyRec family;
FTC_BasicAttrRec attrs;
} FTC_BasicFamilyRec, *FTC_BasicFamily;
static FT_Bool
ftc_basic_family_compare( FTC_BasicFamily family,
FTC_BasicQuery query )
{
return FT_BOOL( FTC_BASIC_ATTR_COMPARE( &family->attrs, &query->attrs ) );
}
static FT_Error
ftc_basic_family_init( FTC_BasicFamily family,
FTC_BasicQuery query,
FTC_Cache cache )
{
FTC_Family_Init( FTC_FAMILY( family ), cache );
family->attrs = query->attrs;
return 0;
}
static FT_UInt
ftc_basic_family_get_count( FTC_BasicFamily family,
FTC_Manager manager )
{
FT_Error error;
FT_Face face;
FT_UInt result = 0;
error = FTC_Manager_LookupFace( manager, family->attrs.scaler.face_id,
&face );
if ( !error )
result = face->num_glyphs;
return result;
}
static FT_Error
ftc_basic_family_load_bitmap( FTC_BasicFamily family,
FT_UInt gindex,
FTC_Manager manager,
FT_Face *aface )
{
FT_Error error;
FT_Size size;
error = FTC_Manager_LookupSize( manager, &family->attrs.scaler, &size );
if ( !error )
{
FT_Face face = size->face;
error = FT_Load_Glyph( face, gindex, family->attrs.load_flags |
FT_LOAD_RENDER );
if ( !error )
*aface = face;
}
return error;
}
static FT_Error
ftc_basic_family_load_glyph( FTC_BasicFamily family,
FT_UInt gindex,
FTC_Cache cache,
FT_Glyph *aglyph )
{
FT_Error error;
FTC_Scaler scaler = &family->attrs.scaler;
FT_Face face;
FT_Size size;
/* we will now load the glyph image */
error = FTC_Manager_LookupSize( cache->manager,
scaler,
&size );
if ( !error )
{
face = size->face;
error = FT_Load_Glyph( face, gindex, family->attrs.load_flags );
if ( !error )
{
if ( face->glyph->format == FT_GLYPH_FORMAT_BITMAP ||
face->glyph->format == FT_GLYPH_FORMAT_OUTLINE )
{
/* ok, copy it */
FT_Glyph glyph;
error = FT_Get_Glyph( face->glyph, &glyph );
if ( !error )
{
*aglyph = glyph;
goto Exit;
}
}
else
error = FTC_Err_Invalid_Argument;
}
}
Exit:
return error;
}
static FT_Bool
ftc_basic_gnode_compare_faceid( FTC_GNode gnode,
FTC_FaceID face_id,
FTC_Cache cache )
{
FTC_BasicFamily family = (FTC_BasicFamily) gnode->family;
FT_Bool result;
result = FT_BOOL( family->attrs.scaler.face_id == face_id );
if ( result )
{
/* we must call this function to avoid this node from appearing
* in later lookups with the same face_id !!
*/
FTC_GNode_UnselectFamily( gnode, cache );
}
return result;
}
/*
*
* basic image cache
*
*/
static const FTC_IFamilyClassRec ftc_basic_image_family_class =
{
{
sizeof( FTC_BasicFamilyRec ),
(FTC_MruNode_CompareFunc) ftc_basic_family_compare,
(FTC_MruNode_InitFunc) ftc_basic_family_init,
(FTC_MruNode_ResetFunc) NULL,
(FTC_MruNode_DoneFunc) NULL
},
(FTC_IFamily_LoadGlyphFunc) ftc_basic_family_load_glyph
};
static const FTC_GCacheClassRec ftc_basic_image_cache_class =
{
{
(FTC_Node_NewFunc) FTC_INode_New,
(FTC_Node_WeightFunc) FTC_INode_Weight,
(FTC_Node_CompareFunc) FTC_GNode_Compare,
(FTC_Node_CompareFunc) ftc_basic_gnode_compare_faceid,
(FTC_Node_FreeFunc) FTC_INode_Free,
sizeof( FTC_GCacheRec ),
(FTC_Cache_InitFunc) FTC_GCache_Init,
(FTC_Cache_DoneFunc) FTC_GCache_Done
},
(FTC_MruListClass) & ftc_basic_image_family_class
};
FT_EXPORT_DEF( FT_Error )
FTC_ImageCache_New( FTC_Manager manager,
FTC_ImageCache *acache )
{
return FTC_GCache_New( manager, & ftc_basic_image_cache_class,
(FTC_GCache*) acache );
}
/* documentation is in ftcimage.h */
FT_EXPORT_DEF( FT_Error )
FTC_ImageCache_Lookup( FTC_ImageCache cache,
FTC_ImageType type,
FT_UInt gindex,
FT_Glyph *aglyph,
FTC_Node *anode )
{
FTC_BasicQueryRec query;
FTC_INode node;
FT_Error error;
FT_UInt32 hash;
/* some argument checks are delayed to FTC_Cache_Lookup */
if ( !aglyph )
{
error = FTC_Err_Invalid_Argument;
goto Exit;
}
*aglyph = NULL;
if ( anode )
*anode = NULL;
query.attrs.scaler.face_id = type->face_id;
query.attrs.scaler.width = type->width;
query.attrs.scaler.height = type->height;
query.attrs.scaler.pixel = 1;
query.attrs.load_flags = type->flags;
hash = FTC_BASIC_ATTR_HASH( &query.attrs ) + gindex;
error = FTC_GCache_Lookup( FTC_GCACHE( cache ),
hash, gindex,
FTC_GQUERY( &query ),
(FTC_Node*) &node );
if ( !error )
{
*aglyph = FTC_INODE(node)->glyph;
if ( anode )
{
*anode = FTC_NODE(node);
FTC_NODE(node)->ref_count++;
}
}
Exit:
return error;
}
/*
*
* basic small bitmap cache
*
*/
static const FTC_SFamilyClassRec ftc_basic_sbit_family_class =
{
{
sizeof( FTC_BasicFamilyRec ),
(FTC_MruNode_CompareFunc) ftc_basic_family_compare,
(FTC_MruNode_InitFunc) ftc_basic_family_init,
(FTC_MruNode_ResetFunc) NULL,
(FTC_MruNode_DoneFunc) NULL
},
(FTC_SFamily_GetCountFunc) ftc_basic_family_get_count,
(FTC_SFamily_LoadGlyphFunc) ftc_basic_family_load_bitmap
};
static const FTC_GCacheClassRec ftc_basic_sbit_cache_class =
{
{
(FTC_Node_NewFunc) FTC_SNode_New,
(FTC_Node_WeightFunc) FTC_SNode_Weight,
(FTC_Node_CompareFunc) FTC_SNode_Compare,
(FTC_Node_CompareFunc) ftc_basic_gnode_compare_faceid,
(FTC_Node_FreeFunc) FTC_SNode_Free,
sizeof( FTC_GCacheRec ),
(FTC_Cache_InitFunc) FTC_GCache_Init,
(FTC_Cache_DoneFunc) FTC_GCache_Done
},
(FTC_MruListClass) & ftc_basic_sbit_family_class
};
FT_EXPORT_DEF( FT_Error )
FTC_SBitCache_New( FTC_Manager manager,
FTC_SBitCache *acache )
{
return FTC_GCache_New( manager, & ftc_basic_sbit_cache_class,
(FTC_GCache*) acache );
}
FT_EXPORT_DEF( FT_Error )
FTC_SBitCache_Lookup( FTC_SBitCache cache,
FTC_ImageType type,
FT_UInt gindex,
FTC_SBit *ansbit,
FTC_Node *anode )
{
FT_Error error;
FTC_BasicQueryRec query;
FTC_SNode node;
FT_UInt32 hash;
if ( anode )
*anode = NULL;
/* other argument checks delayed to FTC_Cache_Lookup */
if ( !ansbit )
return FTC_Err_Invalid_Argument;
*ansbit = NULL;
query.attrs.scaler.face_id = type->face_id;
query.attrs.scaler.width = type->width;
query.attrs.scaler.height = type->height;
query.attrs.scaler.pixel = 1;
query.attrs.load_flags = type->flags;
/* beware, the hash must be the same for all glyph ranges !!
*/
hash = FTC_BASIC_ATTR_HASH( &query.attrs ) +
(gindex/FTC_SBIT_ITEMS_PER_NODE);
error = FTC_GCache_Lookup( FTC_GCACHE( cache ),
hash,
gindex,
FTC_GQUERY( &query ),
(FTC_Node*) &node );
if ( error )
goto Exit;
*ansbit = node->sbits + ( gindex - FTC_GNODE(node)->gindex );
if ( anode )
{
*anode = FTC_NODE( node );
FTC_NODE( node )->ref_count++;
}
Exit:
return error;
}
#include <ft2build.h>
#include FT_CACHE_H
#include FT_CACHE_INTERNAL_GLYPH_H
#include FT_CACHE_INTERNAL_IMAGE_H
#include FT_CACHE_INTERNAL_SBITS_H
#include FT_INTERNAL_MEMORY_H
#include "ftcerror.h"
/*
* Basic Families
*
*
*/
typedef struct FTC_BasicAttrRec_
{
FTC_ScalerRec scaler;
FT_UInt load_flags;
} FTC_BasicAttrRec, *FTC_BasicAttrs;
#define FTC_BASIC_ATTR_COMPARE(a,b) \
( FTC_SCALER_COMPARE( &(a)->scaler, &(b)->scaler ) && \
(a)->load_flags == (b)->load_flags )
#define FTC_BASIC_ATTR_HASH(a) \
( FTC_SCALER_HASH(&(a)->scaler) + 31*(a)->load_flags )
typedef struct FTC_BasicQueryRec_
{
FTC_GQueryRec gquery;
FTC_BasicAttrRec attrs;
} FTC_BasicQueryRec, *FTC_BasicQuery;
typedef struct FTC_BasicFamilyRec_
{
FTC_FamilyRec family;
FTC_BasicAttrRec attrs;
} FTC_BasicFamilyRec, *FTC_BasicFamily;
static FT_Bool
ftc_basic_family_compare( FTC_BasicFamily family,
FTC_BasicQuery query )
{
return FT_BOOL( FTC_BASIC_ATTR_COMPARE( &family->attrs, &query->attrs ) );
}
static FT_Error
ftc_basic_family_init( FTC_BasicFamily family,
FTC_BasicQuery query,
FTC_Cache cache )
{
FTC_Family_Init( FTC_FAMILY( family ), cache );
family->attrs = query->attrs;
return 0;
}
static FT_UInt
ftc_basic_family_get_count( FTC_BasicFamily family,
FTC_Manager manager )
{
FT_Error error;
FT_Face face;
FT_UInt result = 0;
error = FTC_Manager_LookupFace( manager, family->attrs.scaler.face_id,
&face );
if ( !error )
result = face->num_glyphs;
return result;
}
static FT_Error
ftc_basic_family_load_bitmap( FTC_BasicFamily family,
FT_UInt gindex,
FTC_Manager manager,
FT_Face *aface )
{
FT_Error error;
FT_Size size;
error = FTC_Manager_LookupSize( manager, &family->attrs.scaler, &size );
if ( !error )
{
FT_Face face = size->face;
error = FT_Load_Glyph( face, gindex, family->attrs.load_flags |
FT_LOAD_RENDER );
if ( !error )
*aface = face;
}
return error;
}
static FT_Error
ftc_basic_family_load_glyph( FTC_BasicFamily family,
FT_UInt gindex,
FTC_Cache cache,
FT_Glyph *aglyph )
{
FT_Error error;
FTC_Scaler scaler = &family->attrs.scaler;
FT_Face face;
FT_Size size;
/* we will now load the glyph image */
error = FTC_Manager_LookupSize( cache->manager,
scaler,
&size );
if ( !error )
{
face = size->face;
error = FT_Load_Glyph( face, gindex, family->attrs.load_flags );
if ( !error )
{
if ( face->glyph->format == FT_GLYPH_FORMAT_BITMAP ||
face->glyph->format == FT_GLYPH_FORMAT_OUTLINE )
{
/* ok, copy it */
FT_Glyph glyph;
error = FT_Get_Glyph( face->glyph, &glyph );
if ( !error )
{
*aglyph = glyph;
goto Exit;
}
}
else
error = FTC_Err_Invalid_Argument;
}
}
Exit:
return error;
}
static FT_Bool
ftc_basic_gnode_compare_faceid( FTC_GNode gnode,
FTC_FaceID face_id,
FTC_Cache cache )
{
FTC_BasicFamily family = (FTC_BasicFamily) gnode->family;
FT_Bool result;
result = FT_BOOL( family->attrs.scaler.face_id == face_id );
if ( result )
{
/* we must call this function to avoid this node from appearing
* in later lookups with the same face_id !!
*/
FTC_GNode_UnselectFamily( gnode, cache );
}
return result;
}
/*
*
* basic image cache
*
*/
static const FTC_IFamilyClassRec ftc_basic_image_family_class =
{
{
sizeof( FTC_BasicFamilyRec ),
(FTC_MruNode_CompareFunc) ftc_basic_family_compare,
(FTC_MruNode_InitFunc) ftc_basic_family_init,
(FTC_MruNode_ResetFunc) NULL,
(FTC_MruNode_DoneFunc) NULL
},
(FTC_IFamily_LoadGlyphFunc) ftc_basic_family_load_glyph
};
static const FTC_GCacheClassRec ftc_basic_image_cache_class =
{
{
(FTC_Node_NewFunc) FTC_INode_New,
(FTC_Node_WeightFunc) FTC_INode_Weight,
(FTC_Node_CompareFunc) FTC_GNode_Compare,
(FTC_Node_CompareFunc) ftc_basic_gnode_compare_faceid,
(FTC_Node_FreeFunc) FTC_INode_Free,
sizeof( FTC_GCacheRec ),
(FTC_Cache_InitFunc) FTC_GCache_Init,
(FTC_Cache_DoneFunc) FTC_GCache_Done
},
(FTC_MruListClass) & ftc_basic_image_family_class
};
FT_EXPORT_DEF( FT_Error )
FTC_ImageCache_New( FTC_Manager manager,
FTC_ImageCache *acache )
{
return FTC_GCache_New( manager, & ftc_basic_image_cache_class,
(FTC_GCache*) acache );
}
/* documentation is in ftcimage.h */
FT_EXPORT_DEF( FT_Error )
FTC_ImageCache_Lookup( FTC_ImageCache cache,
FTC_ImageType type,
FT_UInt gindex,
FT_Glyph *aglyph,
FTC_Node *anode )
{
FTC_BasicQueryRec query;
FTC_INode node;
FT_Error error;
FT_UInt32 hash;
/* some argument checks are delayed to FTC_Cache_Lookup */
if ( !aglyph )
{
error = FTC_Err_Invalid_Argument;
goto Exit;
}
*aglyph = NULL;
if ( anode )
*anode = NULL;
query.attrs.scaler.face_id = type->face_id;
query.attrs.scaler.width = type->width;
query.attrs.scaler.height = type->height;
query.attrs.scaler.pixel = 1;
query.attrs.load_flags = type->flags;
hash = FTC_BASIC_ATTR_HASH( &query.attrs ) + gindex;
#if 1 /* inlining is about 50% faster !! */
FTC_GCACHE_LOOKUP_CMP( cache,
ftc_basic_family_compare,
FTC_GNode_Compare,
hash, gindex,
&query,
node,
error );
#else
error = FTC_GCache_Lookup( FTC_GCACHE( cache ),
hash, gindex,
FTC_GQUERY( &query ),
(FTC_Node*) &node );
#endif
if ( !error )
{
*aglyph = FTC_INODE(node)->glyph;
if ( anode )
{
*anode = FTC_NODE(node);
FTC_NODE(node)->ref_count++;
}
}
Exit:
return error;
}
/*
*
* basic small bitmap cache
*
*/
static const FTC_SFamilyClassRec ftc_basic_sbit_family_class =
{
{
sizeof( FTC_BasicFamilyRec ),
(FTC_MruNode_CompareFunc) ftc_basic_family_compare,
(FTC_MruNode_InitFunc) ftc_basic_family_init,
(FTC_MruNode_ResetFunc) NULL,
(FTC_MruNode_DoneFunc) NULL
},
(FTC_SFamily_GetCountFunc) ftc_basic_family_get_count,
(FTC_SFamily_LoadGlyphFunc) ftc_basic_family_load_bitmap
};
static const FTC_GCacheClassRec ftc_basic_sbit_cache_class =
{
{
(FTC_Node_NewFunc) FTC_SNode_New,
(FTC_Node_WeightFunc) FTC_SNode_Weight,
(FTC_Node_CompareFunc) FTC_SNode_Compare,
(FTC_Node_CompareFunc) ftc_basic_gnode_compare_faceid,
(FTC_Node_FreeFunc) FTC_SNode_Free,
sizeof( FTC_GCacheRec ),
(FTC_Cache_InitFunc) FTC_GCache_Init,
(FTC_Cache_DoneFunc) FTC_GCache_Done
},
(FTC_MruListClass) & ftc_basic_sbit_family_class
};
FT_EXPORT_DEF( FT_Error )
FTC_SBitCache_New( FTC_Manager manager,
FTC_SBitCache *acache )
{
return FTC_GCache_New( manager, & ftc_basic_sbit_cache_class,
(FTC_GCache*) acache );
}
FT_EXPORT_DEF( FT_Error )
FTC_SBitCache_Lookup( FTC_SBitCache cache,
FTC_ImageType type,
FT_UInt gindex,
FTC_SBit *ansbit,
FTC_Node *anode )
{
FT_Error error;
FTC_BasicQueryRec query;
FTC_SNode node;
FT_UInt32 hash;
if ( anode )
*anode = NULL;
/* other argument checks delayed to FTC_Cache_Lookup */
if ( !ansbit )
return FTC_Err_Invalid_Argument;
*ansbit = NULL;
query.attrs.scaler.face_id = type->face_id;
query.attrs.scaler.width = type->width;
query.attrs.scaler.height = type->height;
query.attrs.scaler.pixel = 1;
query.attrs.load_flags = type->flags;
/* beware, the hash must be the same for all glyph ranges !!
*/
hash = FTC_BASIC_ATTR_HASH( &query.attrs ) +
(gindex/FTC_SBIT_ITEMS_PER_NODE);
#if 1 /* inlining is about 50% faster !! */
FTC_GCACHE_LOOKUP_CMP( cache,
ftc_basic_family_compare,
FTC_SNode_Compare,
hash, gindex,
&query,
node,
error );
#else
error = FTC_GCache_Lookup( FTC_GCACHE( cache ),
hash,
gindex,
FTC_GQUERY( &query ),
(FTC_Node*) &node );
#endif
if ( error )
goto Exit;
*ansbit = node->sbits + ( gindex - FTC_GNODE(node)->gindex );
if ( anode )
{
*anode = FTC_NODE( node );
FTC_NODE( node )->ref_count++;
}
Exit:
return error;
}

1143
src/cache/ftccache.c vendored
View File

File diff suppressed because it is too large Load Diff

537
src/cache/ftccmap.c vendored
View File

@ -1,266 +1,271 @@
/***************************************************************************/
/* */
/* ftccmap.c */
/* */
/* FreeType CharMap cache (body) */
/* */
/* Copyright 2000-2001, 2002, 2003 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. */
/* */
/***************************************************************************/
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_CACHE_H
#include FT_CACHE_INTERNAL_MANAGER_H
#include FT_INTERNAL_MEMORY_H
#include FT_INTERNAL_DEBUG_H
#include FT_TRUETYPE_IDS_H
#include "ftcerror.h"
#undef FT_COMPONENT
#define FT_COMPONENT trace_cache
/*************************************************************************/
/* */
/* Each FTC_CMapNode contains a simple array to map a range of character */
/* codes to equivalent glyph indices. */
/* */
/* For now, the implementation is very basic: Each node maps a range of */
/* 128 consecutive character codes to their corresponding glyph indices. */
/* */
/* We could do more complex things, but I don't think it is really very */
/* useful. */
/* */
/*************************************************************************/
/* number of glyph indices / character code per node */
#define FTC_CMAP_INDICES_MAX 128
/* compute a query/node hash */
#define FTC_CMAP_HASH( faceid, index, charcode ) \
( FTC_FACE_ID_HASH( faceid ) + 211*( index ) + ((char_code) / FTC_CMAP_INDICES_MAX) )
/* the charmap query */
typedef struct FTC_CMapQueryRec_
{
FTC_FaceID face_id;
FT_UInt cmap_index;
FT_UInt32 char_code;
} FTC_CMapQueryRec, *FTC_CMapQuery;
#define FTC_CMAP_QUERY(x) ((FTC_CMapQuery)(x))
#define FTC_CMAP_QUERY_HASH(x) FTC_CMAP_HASH( (x)->face_id, (x)->cmap_index, (x)->char_code )
/* the cmap cache node */
typedef struct FTC_CMapNodeRec_
{
FTC_NodeRec node;
FTC_FaceID face_id;
FT_UInt cmap_index;
FT_UInt32 first; /* first character in node */
FT_UInt16 indices[FTC_CMAP_INDICES_MAX]; /* array of glyph indices */
} FTC_CMapNodeRec, *FTC_CMapNode;
#define FTC_CMAP_NODE( x ) ( (FTC_CMapNode)( x ) )
#define FTC_CMAP_NODE_HASH(x) FTC_CMAP_HASH( (x)->face_id, (x)->cmap_index, (x)->first )
/* if (indices[n] == FTC_CMAP_UNKNOWN), we assume that the corresponding */
/* glyph indices haven't been queried through FT_Get_Glyph_Index() yet */
#define FTC_CMAP_UNKNOWN ( (FT_UInt16)-1 )
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** CHARMAP NODES *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/* no need for specific finalizer; we use "ftc_node_done" directly */
FT_CALLBACK_DEF( void )
ftc_cmap_node_free( FTC_CMapNode node,
FTC_Cache cache )
{
FT_Memory memory = cache->memory;
FT_FREE( node );
}
/* initialize a new cmap node */
FT_CALLBACK_DEF( FT_Error )
ftc_cmap_node_new( FTC_CMapNode *anode,
FTC_CMapQuery query,
FTC_Cache cache )
{
FT_Error error;
FT_Memory memory = cache->memory;
FTC_CMapNode node;
FT_UInt nn;
if ( !FT_NEW( node ) )
{
node->face_id = query->face_id;
node->cmap_index = query->cmap_index;
node->first = (query->char_code / FTC_CMAP_INDICES_MAX) *
FTC_CMAP_INDICES_MAX;
for ( nn = 0; nn < FTC_CMAP_INDICES_MAX; nn++ )
node->indices[nn] = FTC_CMAP_UNKNOWN;
}
*anode = node;
return error;
}
/* compute the weight of a given cmap node */
FT_CALLBACK_DEF( FT_ULong )
ftc_cmap_node_weight( FTC_CMapNode cnode )
{
FT_UNUSED( cnode );
return sizeof ( *cnode );
}
/* compare a cmap node to a given query */
FT_CALLBACK_DEF( FT_Bool )
ftc_cmap_node_compare( FTC_CMapNode node,
FTC_CMapQuery query )
{
if ( node->face_id == query->face_id &&
node->cmap_index == query->cmap_index )
{
FT_UInt32 offset = (FT_UInt32)( query->char_code - node->first );
return FT_BOOL( offset < FTC_CMAP_INDICES_MAX );
}
return 0;
}
FT_CALLBACK_DEF( FT_Bool )
ftc_cmap_node_remove_faceid( FTC_CMapNode node,
FTC_FaceID face_id )
{
return FT_BOOL( node->face_id == face_id );
}
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** GLYPH IMAGE CACHE *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
FT_CALLBACK_TABLE_DEF
const FTC_CacheClassRec ftc_cmap_cache_class =
{
(FTC_Node_NewFunc) ftc_cmap_node_new,
(FTC_Node_WeightFunc) ftc_cmap_node_weight,
(FTC_Node_CompareFunc) ftc_cmap_node_compare,
(FTC_Node_CompareFunc) ftc_cmap_node_remove_faceid,
(FTC_Node_FreeFunc) ftc_cmap_node_free,
sizeof ( FTC_CacheRec ),
(FTC_Cache_InitFunc) FTC_Cache_Init,
(FTC_Cache_DoneFunc) FTC_Cache_Done,
};
/* documentation is in ftccmap.h */
FT_EXPORT_DEF( FT_Error )
FTC_CMapCache_New( FTC_Manager manager,
FTC_CMapCache *acache )
{
return FTC_Manager_RegisterCache( manager,
& ftc_cmap_cache_class,
FTC_CACHE_P( acache ) );
}
/* documentation is in ftccmap.h */
FT_EXPORT_DEF( FT_UInt )
FTC_CMapCache_Lookup( FTC_CMapCache cmap_cache,
FTC_FaceID face_id,
FT_Int cmap_index,
FT_UInt32 char_code )
{
FTC_Cache cache = FTC_CACHE( cmap_cache );
FTC_CMapQueryRec query;
FTC_CMapNode node;
FT_Error error;
FT_UInt gindex = 0;
FT_UInt32 hash;
if ( !cache )
{
FT_ERROR(( "FTC_CMapCache_Lookup: bad arguments, returning 0!\n" ));
return 0;
}
query.face_id = face_id;
query.cmap_index = (FT_UInt)cmap_index;
query.char_code = char_code;
hash = FTC_CMAP_HASH( face_id, cmap_index, char_code );
error = FTC_Cache_Lookup( cache, hash, &query, (FTC_Node*) &node );
if ( error )
goto Exit;
FT_ASSERT( (FT_UInt)( char_code - node->first ) < FTC_CMAP_INDICES_MAX );
gindex = node->indices[ char_code - node->first ];
if ( gindex == FTC_CMAP_UNKNOWN )
{
FT_Face face;
gindex = 0;
error = FTC_Manager_LookupFace( cache->manager, node->face_id, &face );
if ( error )
goto Exit;
if ( (FT_UInt)cmap_index < (FT_UInt)face->num_charmaps )
{
FT_CharMap old, cmap = NULL;
old = face->charmap;
cmap = face->charmaps[ cmap_index ];
if (old != cmap)
FT_Set_Charmap( face, cmap );
gindex = FT_Get_Char_Index( face, char_code );
if (old != cmap)
FT_Set_Charmap( face, old );
}
node->indices[ char_code - node->first ] = gindex;
}
Exit:
return gindex;
}
/* END */
/***************************************************************************/
/* */
/* ftccmap.c */
/* */
/* FreeType CharMap cache (body) */
/* */
/* Copyright 2000-2001, 2002, 2003 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. */
/* */
/***************************************************************************/
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_CACHE_H
#include FT_CACHE_INTERNAL_MANAGER_H
#include FT_INTERNAL_MEMORY_H
#include FT_INTERNAL_DEBUG_H
#include FT_TRUETYPE_IDS_H
#include "ftcerror.h"
#undef FT_COMPONENT
#define FT_COMPONENT trace_cache
/*************************************************************************/
/* */
/* Each FTC_CMapNode contains a simple array to map a range of character */
/* codes to equivalent glyph indices. */
/* */
/* For now, the implementation is very basic: Each node maps a range of */
/* 128 consecutive character codes to their corresponding glyph indices. */
/* */
/* We could do more complex things, but I don't think it is really very */
/* useful. */
/* */
/*************************************************************************/
/* number of glyph indices / character code per node */
#define FTC_CMAP_INDICES_MAX 128
/* compute a query/node hash */
#define FTC_CMAP_HASH( faceid, index, charcode ) \
( FTC_FACE_ID_HASH( faceid ) + 211*( index ) + ((char_code) / FTC_CMAP_INDICES_MAX) )
/* the charmap query */
typedef struct FTC_CMapQueryRec_
{
FTC_FaceID face_id;
FT_UInt cmap_index;
FT_UInt32 char_code;
} FTC_CMapQueryRec, *FTC_CMapQuery;
#define FTC_CMAP_QUERY(x) ((FTC_CMapQuery)(x))
#define FTC_CMAP_QUERY_HASH(x) FTC_CMAP_HASH( (x)->face_id, (x)->cmap_index, (x)->char_code )
/* the cmap cache node */
typedef struct FTC_CMapNodeRec_
{
FTC_NodeRec node;
FTC_FaceID face_id;
FT_UInt cmap_index;
FT_UInt32 first; /* first character in node */
FT_UInt16 indices[FTC_CMAP_INDICES_MAX]; /* array of glyph indices */
} FTC_CMapNodeRec, *FTC_CMapNode;
#define FTC_CMAP_NODE( x ) ( (FTC_CMapNode)( x ) )
#define FTC_CMAP_NODE_HASH(x) FTC_CMAP_HASH( (x)->face_id, (x)->cmap_index, (x)->first )
/* if (indices[n] == FTC_CMAP_UNKNOWN), we assume that the corresponding */
/* glyph indices haven't been queried through FT_Get_Glyph_Index() yet */
#define FTC_CMAP_UNKNOWN ( (FT_UInt16)-1 )
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** CHARMAP NODES *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/* no need for specific finalizer; we use "ftc_node_done" directly */
FT_CALLBACK_DEF( void )
ftc_cmap_node_free( FTC_CMapNode node,
FTC_Cache cache )
{
FT_Memory memory = cache->memory;
FT_FREE( node );
}
/* initialize a new cmap node */
FT_CALLBACK_DEF( FT_Error )
ftc_cmap_node_new( FTC_CMapNode *anode,
FTC_CMapQuery query,
FTC_Cache cache )
{
FT_Error error;
FT_Memory memory = cache->memory;
FTC_CMapNode node;
FT_UInt nn;
if ( !FT_NEW( node ) )
{
node->face_id = query->face_id;
node->cmap_index = query->cmap_index;
node->first = (query->char_code / FTC_CMAP_INDICES_MAX) *
FTC_CMAP_INDICES_MAX;
for ( nn = 0; nn < FTC_CMAP_INDICES_MAX; nn++ )
node->indices[nn] = FTC_CMAP_UNKNOWN;
}
*anode = node;
return error;
}
/* compute the weight of a given cmap node */
FT_CALLBACK_DEF( FT_ULong )
ftc_cmap_node_weight( FTC_CMapNode cnode )
{
FT_UNUSED( cnode );
return sizeof ( *cnode );
}
/* compare a cmap node to a given query */
FT_CALLBACK_DEF( FT_Bool )
ftc_cmap_node_compare( FTC_CMapNode node,
FTC_CMapQuery query )
{
if ( node->face_id == query->face_id &&
node->cmap_index == query->cmap_index )
{
FT_UInt32 offset = (FT_UInt32)( query->char_code - node->first );
return FT_BOOL( offset < FTC_CMAP_INDICES_MAX );
}
return 0;
}
FT_CALLBACK_DEF( FT_Bool )
ftc_cmap_node_remove_faceid( FTC_CMapNode node,
FTC_FaceID face_id )
{
return FT_BOOL( node->face_id == face_id );
}
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** GLYPH IMAGE CACHE *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
FT_CALLBACK_TABLE_DEF
const FTC_CacheClassRec ftc_cmap_cache_class =
{
(FTC_Node_NewFunc) ftc_cmap_node_new,
(FTC_Node_WeightFunc) ftc_cmap_node_weight,
(FTC_Node_CompareFunc) ftc_cmap_node_compare,
(FTC_Node_CompareFunc) ftc_cmap_node_remove_faceid,
(FTC_Node_FreeFunc) ftc_cmap_node_free,
sizeof ( FTC_CacheRec ),
(FTC_Cache_InitFunc) FTC_Cache_Init,
(FTC_Cache_DoneFunc) FTC_Cache_Done,
};
/* documentation is in ftccmap.h */
FT_EXPORT_DEF( FT_Error )
FTC_CMapCache_New( FTC_Manager manager,
FTC_CMapCache *acache )
{
return FTC_Manager_RegisterCache( manager,
& ftc_cmap_cache_class,
FTC_CACHE_P( acache ) );
}
/* documentation is in ftccmap.h */
FT_EXPORT_DEF( FT_UInt )
FTC_CMapCache_Lookup( FTC_CMapCache cmap_cache,
FTC_FaceID face_id,
FT_Int cmap_index,
FT_UInt32 char_code )
{
FTC_Cache cache = FTC_CACHE( cmap_cache );
FTC_CMapQueryRec query;
FTC_CMapNode node;
FT_Error error;
FT_UInt gindex = 0;
FT_UInt32 hash;
if ( !cache )
{
FT_ERROR(( "FTC_CMapCache_Lookup: bad arguments, returning 0!\n" ));
return 0;
}
query.face_id = face_id;
query.cmap_index = (FT_UInt)cmap_index;
query.char_code = char_code;
hash = FTC_CMAP_HASH( face_id, cmap_index, char_code );
#if 1
FTC_CACHE_LOOKUP_CMP( cache, ftc_cmap_node_compare, hash, &query,
node, error );
#else
error = FTC_Cache_Lookup( cache, hash, &query, (FTC_Node*) &node );
#endif
if ( error )
goto Exit;
FT_ASSERT( (FT_UInt)( char_code - node->first ) < FTC_CMAP_INDICES_MAX );
gindex = node->indices[ char_code - node->first ];
if ( gindex == FTC_CMAP_UNKNOWN )
{
FT_Face face;
gindex = 0;
error = FTC_Manager_LookupFace( cache->manager, node->face_id, &face );
if ( error )
goto Exit;
if ( (FT_UInt)cmap_index < (FT_UInt)face->num_charmaps )
{
FT_CharMap old, cmap = NULL;
old = face->charmap;
cmap = face->charmaps[ cmap_index ];
if (old != cmap)
FT_Set_Charmap( face, cmap );
gindex = FT_Get_Char_Index( face, char_code );
if (old != cmap)
FT_Set_Charmap( face, old );
}
node->indices[ char_code - node->first ] = gindex;
}
Exit:
return gindex;
}
/* END */

305
src/cache/ftcglyph.c vendored
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@ -1,153 +1,152 @@
/***************************************************************************/
/* */
/* ftcglyph.c */
/* */
/* FreeType Glyph Image (FT_Glyph) cache (body). */
/* */
/* 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. */
/* */
/***************************************************************************/
#include <ft2build.h>
#include FT_CACHE_H
#include FT_CACHE_INTERNAL_GLYPH_H
#include FT_ERRORS_H
#include FT_INTERNAL_OBJECTS_H
#include FT_INTERNAL_DEBUG_H
#include "ftcerror.h"
/* create a new chunk node, setting its cache index and ref count */
FT_EXPORT_DEF( void )
FTC_GNode_Init( FTC_GNode gnode,
FT_UInt gindex,
FTC_Family family )
{
gnode->family = family;
gnode->gindex = gindex;
family->num_nodes++;
}
FT_EXPORT_DEF( void )
FTC_GNode_UnselectFamily( FTC_GNode gnode,
FTC_Cache cache )
{
FTC_Family family = gnode->family;
gnode->family = NULL;
if ( family && --family->num_nodes <= 0 )
{
FTC_MruList_Remove( & FTC_GCACHE(cache)->families, (FTC_MruNode)family );
}
}
FT_EXPORT_DEF( void )
FTC_GNode_Done( FTC_GNode gnode,
FTC_Cache cache )
{
/* finalize the node */
gnode->gindex = 0;
FTC_GNode_UnselectFamily( gnode, cache );
}
FT_EXPORT_DEF( FT_Bool )
FTC_GNode_Compare( FTC_GNode gnode,
FTC_GQuery gquery )
{
return FT_BOOL( gnode->family == gquery->family &&
gnode->gindex == gquery->gindex );
}
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** CHUNK SETS *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
FT_EXPORT_DEF( void )
FTC_Family_Init( FTC_Family family,
FTC_Cache cache )
{
FTC_GCacheClass clazz = FTC_CACHE__GCACHE_CLASS(cache);
family->clazz = clazz->family_class;
family->num_nodes = 0;
family->cache = cache;
}
FT_EXPORT_DEF( FT_Error )
FTC_GCache_Init( FTC_GCache cache )
{
FT_Error error;
error = FTC_Cache_Init( FTC_CACHE(cache) );
if ( !error )
{
FTC_GCacheClass clazz = (FTC_GCacheClass) FTC_CACHE(cache)->org_class;
FTC_MruList_Init( &cache->families,
clazz->family_class,
0, /* no maximum here !! */
cache,
FTC_CACHE(cache)->memory );
}
return error;
}
FT_EXPORT_DEF( void )
FTC_GCache_Done( FTC_GCache cache )
{
FTC_Cache_Done( (FTC_Cache)cache );
FTC_MruList_Done( &cache->families );
}
FT_EXPORT_DEF( FT_Error )
FTC_GCache_New( FTC_Manager manager,
FTC_GCacheClass clazz,
FTC_GCache *acache )
{
return FTC_Manager_RegisterCache( manager, (FTC_CacheClass) clazz,
(FTC_Cache*) acache );
}
FT_EXPORT_DEF( FT_Error )
FTC_GCache_Lookup( FTC_GCache cache,
FT_UInt32 hash,
FT_UInt gindex,
FTC_GQuery query,
FTC_Node *anode )
{
FT_Error error;
query->gindex = gindex;
error = FTC_MruList_Lookup( &cache->families, query,
(FTC_MruNode*) &query->family );
if ( !error )
error = FTC_Cache_Lookup( FTC_CACHE(cache), hash, query, anode );
return error;
}
/* END */
/***************************************************************************/
/* */
/* ftcglyph.c */
/* */
/* FreeType Glyph Image (FT_Glyph) cache (body). */
/* */
/* 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. */
/* */
/***************************************************************************/
#include <ft2build.h>
#include FT_CACHE_H
#include FT_CACHE_INTERNAL_GLYPH_H
#include FT_ERRORS_H
#include FT_INTERNAL_OBJECTS_H
#include FT_INTERNAL_DEBUG_H
#include "ftcerror.h"
/* create a new chunk node, setting its cache index and ref count */
FT_EXPORT_DEF( void )
FTC_GNode_Init( FTC_GNode gnode,
FT_UInt gindex,
FTC_Family family )
{
gnode->family = family;
gnode->gindex = gindex;
family->num_nodes++;
}
FT_EXPORT_DEF( void )
FTC_GNode_UnselectFamily( FTC_GNode gnode,
FTC_Cache cache )
{
FTC_Family family = gnode->family;
gnode->family = NULL;
if ( family && --family->num_nodes <= 0 )
{
FTC_MruList_Remove( & FTC_GCACHE(cache)->families, (FTC_MruNode)family );
}
}
FT_EXPORT_DEF( void )
FTC_GNode_Done( FTC_GNode gnode,
FTC_Cache cache )
{
/* finalize the node */
gnode->gindex = 0;
FTC_GNode_UnselectFamily( gnode, cache );
}
FT_EXPORT_DEF( FT_Bool )
FTC_GNode_Compare( FTC_GNode gnode,
FTC_GQuery gquery )
{
return FT_BOOL( gnode->family == gquery->family &&
gnode->gindex == gquery->gindex );
}
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** CHUNK SETS *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
FT_EXPORT_DEF( void )
FTC_Family_Init( FTC_Family family,
FTC_Cache cache )
{
FTC_GCacheClass clazz = FTC_CACHE__GCACHE_CLASS(cache);
family->clazz = clazz->family_class;
family->num_nodes = 0;
family->cache = cache;
}
FT_EXPORT_DEF( FT_Error )
FTC_GCache_Init( FTC_GCache cache )
{
FT_Error error;
error = FTC_Cache_Init( FTC_CACHE(cache) );
if ( !error )
{
FTC_GCacheClass clazz = (FTC_GCacheClass) FTC_CACHE(cache)->org_class;
FTC_MruList_Init( &cache->families,
clazz->family_class,
0, /* no maximum here !! */
cache,
FTC_CACHE(cache)->memory );
}
return error;
}
FT_EXPORT_DEF( void )
FTC_GCache_Done( FTC_GCache cache )
{
FTC_Cache_Done( (FTC_Cache)cache );
FTC_MruList_Done( &cache->families );
}
FT_EXPORT_DEF( FT_Error )
FTC_GCache_New( FTC_Manager manager,
FTC_GCacheClass clazz,
FTC_GCache *acache )
{
return FTC_Manager_RegisterCache( manager, (FTC_CacheClass) clazz,
(FTC_Cache*) acache );
}
FT_EXPORT_DEF( FT_Error )
FTC_GCache_Lookup( FTC_GCache cache,
FT_UInt32 hash,
FT_UInt gindex,
FTC_GQuery query,
FTC_Node *anode )
{
FT_Error error;
query->gindex = gindex;
FTC_MRULIST_LOOKUP( &cache->families, query, query->family, error );
if ( !error )
error = FTC_Cache_Lookup( FTC_CACHE(cache), hash, query, anode );
return error;
}
/* END */

1268
src/cache/ftcmanag.c vendored
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