ref: a40b1b64a091cc7f981d2c471e2fef64a6ace77f
dir: /src/cache/ftcbasic.c/
#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;
}