1 /***************************************************************************/
5 /* The FreeType basic cache interface (body). */
7 /* Copyright 2003, 2004, 2005, 2006, 2007, 2009, 2010 by */
8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
10 /* This file is part of the FreeType project, and may only be used, */
11 /* modified, and distributed under the terms of the FreeType project */
12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
13 /* this file you indicate that you have read the license and */
14 /* understand and accept it fully. */
16 /***************************************************************************/
20 #include FT_INTERNAL_DEBUG_H
29 #define FT_COMPONENT trace_cache
32 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
35 * These structures correspond to the FTC_Font and FTC_ImageDesc types
36 * that were defined in version 2.1.7.
38 typedef struct FTC_OldFontRec_
44 } FTC_OldFontRec, *FTC_OldFont;
47 typedef struct FTC_OldImageDescRec_
52 } FTC_OldImageDescRec, *FTC_OldImageDesc;
56 * Notice that FTC_OldImageDescRec and FTC_ImageTypeRec are nearly
57 * identical, bit-wise. The only difference is that the `width' and
58 * `height' fields are expressed as 16-bit integers in the old structure,
59 * and as normal `int' in the new one.
61 * We are going to perform a weird hack to detect which structure is
62 * being passed to the image and sbit caches. If the new structure's
63 * `width' is larger than 0x10000, we assume that we are really receiving
64 * an FTC_OldImageDesc.
67 #endif /* FT_CONFIG_OPTION_OLD_INTERNALS */
74 typedef struct FTC_BasicAttrRec_
79 } FTC_BasicAttrRec, *FTC_BasicAttrs;
81 #define FTC_BASIC_ATTR_COMPARE( a, b ) \
82 FT_BOOL( FTC_SCALER_COMPARE( &(a)->scaler, &(b)->scaler ) && \
83 (a)->load_flags == (b)->load_flags )
85 #define FTC_BASIC_ATTR_HASH( a ) \
86 ( FTC_SCALER_HASH( &(a)->scaler ) + 31*(a)->load_flags )
89 typedef struct FTC_BasicQueryRec_
92 FTC_BasicAttrRec attrs;
94 } FTC_BasicQueryRec, *FTC_BasicQuery;
97 typedef struct FTC_BasicFamilyRec_
100 FTC_BasicAttrRec attrs;
102 } FTC_BasicFamilyRec, *FTC_BasicFamily;
105 FT_CALLBACK_DEF( FT_Bool )
106 ftc_basic_family_compare( FTC_MruNode ftcfamily,
107 FT_Pointer ftcquery )
109 FTC_BasicFamily family = (FTC_BasicFamily)ftcfamily;
110 FTC_BasicQuery query = (FTC_BasicQuery)ftcquery;
113 return FTC_BASIC_ATTR_COMPARE( &family->attrs, &query->attrs );
117 FT_CALLBACK_DEF( FT_Error )
118 ftc_basic_family_init( FTC_MruNode ftcfamily,
120 FT_Pointer ftccache )
122 FTC_BasicFamily family = (FTC_BasicFamily)ftcfamily;
123 FTC_BasicQuery query = (FTC_BasicQuery)ftcquery;
124 FTC_Cache cache = (FTC_Cache)ftccache;
127 FTC_Family_Init( FTC_FAMILY( family ), cache );
128 family->attrs = query->attrs;
133 FT_CALLBACK_DEF( FT_UInt )
134 ftc_basic_family_get_count( FTC_Family ftcfamily,
135 FTC_Manager manager )
137 FTC_BasicFamily family = (FTC_BasicFamily)ftcfamily;
143 error = FTC_Manager_LookupFace( manager, family->attrs.scaler.face_id,
146 if ( error || !face )
149 if ( (FT_ULong)face->num_glyphs > FT_UINT_MAX || 0 > face->num_glyphs )
151 FT_TRACE1(( "ftc_basic_family_get_count: too large number of glyphs " ));
152 FT_TRACE1(( "in this face, truncated\n", face->num_glyphs ));
156 result = (FT_UInt)face->num_glyphs;
162 FT_CALLBACK_DEF( FT_Error )
163 ftc_basic_family_load_bitmap( FTC_Family ftcfamily,
168 FTC_BasicFamily family = (FTC_BasicFamily)ftcfamily;
173 error = FTC_Manager_LookupSize( manager, &family->attrs.scaler, &size );
176 FT_Face face = size->face;
179 error = FT_Load_Glyph( face, gindex,
180 family->attrs.load_flags | FT_LOAD_RENDER );
189 FT_CALLBACK_DEF( FT_Error )
190 ftc_basic_family_load_glyph( FTC_Family ftcfamily,
195 FTC_BasicFamily family = (FTC_BasicFamily)ftcfamily;
197 FTC_Scaler scaler = &family->attrs.scaler;
202 /* we will now load the glyph image */
203 error = FTC_Manager_LookupSize( cache->manager,
210 error = FT_Load_Glyph( face, gindex, family->attrs.load_flags );
213 if ( face->glyph->format == FT_GLYPH_FORMAT_BITMAP ||
214 face->glyph->format == FT_GLYPH_FORMAT_OUTLINE )
220 error = FT_Get_Glyph( face->glyph, &glyph );
228 error = FTC_Err_Invalid_Argument;
237 FT_CALLBACK_DEF( FT_Bool )
238 ftc_basic_gnode_compare_faceid( FTC_Node ftcgnode,
239 FT_Pointer ftcface_id,
242 FTC_GNode gnode = (FTC_GNode)ftcgnode;
243 FTC_FaceID face_id = (FTC_FaceID)ftcface_id;
244 FTC_BasicFamily family = (FTC_BasicFamily)gnode->family;
248 result = FT_BOOL( family->attrs.scaler.face_id == face_id );
251 /* we must call this function to avoid this node from appearing
252 * in later lookups with the same face_id!
254 FTC_GNode_UnselectFamily( gnode, cache );
266 FT_CALLBACK_TABLE_DEF
267 const FTC_IFamilyClassRec ftc_basic_image_family_class =
270 sizeof ( FTC_BasicFamilyRec ),
271 ftc_basic_family_compare,
272 ftc_basic_family_init,
273 0, /* FTC_MruNode_ResetFunc */
274 0 /* FTC_MruNode_DoneFunc */
276 ftc_basic_family_load_glyph
280 FT_CALLBACK_TABLE_DEF
281 const FTC_GCacheClassRec ftc_basic_image_cache_class =
287 ftc_basic_gnode_compare_faceid,
290 sizeof ( FTC_GCacheRec ),
294 (FTC_MruListClass)&ftc_basic_image_family_class
298 /* documentation is in ftcache.h */
300 FT_EXPORT_DEF( FT_Error )
301 FTC_ImageCache_New( FTC_Manager manager,
302 FTC_ImageCache *acache )
304 return FTC_GCache_New( manager, &ftc_basic_image_cache_class,
305 (FTC_GCache*)acache );
309 /* documentation is in ftcache.h */
311 FT_EXPORT_DEF( FT_Error )
312 FTC_ImageCache_Lookup( FTC_ImageCache cache,
318 FTC_BasicQueryRec query;
319 FTC_Node node = 0; /* make compiler happy */
324 /* some argument checks are delayed to FTC_Cache_Lookup */
327 error = FTC_Err_Invalid_Argument;
335 #if defined( FT_CONFIG_OPTION_OLD_INTERNALS ) && ( FT_INT_MAX > 0xFFFFU )
338 * This one is a major hack used to detect whether we are passed a
339 * regular FTC_ImageType handle, or a legacy FTC_OldImageDesc one.
341 if ( (FT_ULong)type->width >= 0x10000L )
343 FTC_OldImageDesc desc = (FTC_OldImageDesc)type;
346 query.attrs.scaler.face_id = desc->font.face_id;
347 query.attrs.scaler.width = desc->font.pix_width;
348 query.attrs.scaler.height = desc->font.pix_height;
349 query.attrs.load_flags = desc->flags;
353 #endif /* FT_CONFIG_OPTION_OLD_INTERNALS */
356 if ( (FT_ULong)(type->flags - FT_INT_MIN) > FT_UINT_MAX )
358 FT_TRACE1(( "FTC_ImageCache_Lookup: higher bits in load_flags" ));
359 FT_TRACE1(( "0x%x are dropped\n", (type->flags & ~((FT_ULong)FT_UINT_MAX)) ));
362 query.attrs.scaler.face_id = type->face_id;
363 query.attrs.scaler.width = type->width;
364 query.attrs.scaler.height = type->height;
365 query.attrs.load_flags = (FT_UInt)type->flags;
368 query.attrs.scaler.pixel = 1;
369 query.attrs.scaler.x_res = 0; /* make compilers happy */
370 query.attrs.scaler.y_res = 0;
372 hash = FTC_BASIC_ATTR_HASH( &query.attrs ) + gindex;
374 #if 1 /* inlining is about 50% faster! */
375 FTC_GCACHE_LOOKUP_CMP( cache,
376 ftc_basic_family_compare,
383 error = FTC_GCache_Lookup( FTC_GCACHE( cache ),
385 FTC_GQUERY( &query ),
390 *aglyph = FTC_INODE( node )->glyph;
404 /* documentation is in ftcache.h */
406 FT_EXPORT_DEF( FT_Error )
407 FTC_ImageCache_LookupScaler( FTC_ImageCache cache,
414 FTC_BasicQueryRec query;
415 FTC_Node node = 0; /* make compiler happy */
420 /* some argument checks are delayed to FTC_Cache_Lookup */
421 if ( !aglyph || !scaler )
423 error = FTC_Err_Invalid_Argument;
431 /* FT_Load_Glyph(), FT_Load_Char() take FT_UInt flags */
432 if ( load_flags > FT_UINT_MAX )
434 FT_TRACE1(( "FTC_ImageCache_LookupScaler: higher bits in load_flags" ));
435 FT_TRACE1(( "0x%x are dropped\n", (load_flags & ~((FT_ULong)FT_UINT_MAX)) ));
438 query.attrs.scaler = scaler[0];
439 query.attrs.load_flags = (FT_UInt)load_flags;
441 hash = FTC_BASIC_ATTR_HASH( &query.attrs ) + gindex;
443 FTC_GCACHE_LOOKUP_CMP( cache,
444 ftc_basic_family_compare,
452 *aglyph = FTC_INODE( node )->glyph;
467 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
469 /* yet another backwards-legacy structure */
470 typedef struct FTC_OldImage_Desc_
478 #define FTC_OLD_IMAGE_FORMAT( x ) ( (x) & 7 )
481 #define ftc_old_image_format_bitmap 0x0000
482 #define ftc_old_image_format_outline 0x0001
484 #define ftc_old_image_format_mask 0x000F
486 #define ftc_old_image_flag_monochrome 0x0010
487 #define ftc_old_image_flag_unhinted 0x0020
488 #define ftc_old_image_flag_autohinted 0x0040
489 #define ftc_old_image_flag_unscaled 0x0080
490 #define ftc_old_image_flag_no_sbits 0x0100
492 /* monochrome bitmap */
493 #define ftc_old_image_mono ftc_old_image_format_bitmap | \
494 ftc_old_image_flag_monochrome
496 /* anti-aliased bitmap */
497 #define ftc_old_image_grays ftc_old_image_format_bitmap
500 #define ftc_old_image_outline ftc_old_image_format_outline
504 ftc_image_type_from_old_desc( FTC_ImageType typ,
505 FTC_OldImage_Desc* desc )
507 typ->face_id = desc->font.face_id;
508 typ->width = desc->font.pix_width;
509 typ->height = desc->font.pix_height;
511 /* convert image type flags to load flags */
513 FT_UInt load_flags = FT_LOAD_DEFAULT;
514 FT_UInt type = desc->image_type;
517 /* determine load flags, depending on the font description's */
520 if ( FTC_OLD_IMAGE_FORMAT( type ) == ftc_old_image_format_bitmap )
522 if ( type & ftc_old_image_flag_monochrome )
523 load_flags |= FT_LOAD_MONOCHROME;
525 /* disable embedded bitmaps loading if necessary */
526 if ( type & ftc_old_image_flag_no_sbits )
527 load_flags |= FT_LOAD_NO_BITMAP;
531 /* we want an outline, don't load embedded bitmaps */
532 load_flags |= FT_LOAD_NO_BITMAP;
534 if ( type & ftc_old_image_flag_unscaled )
535 load_flags |= FT_LOAD_NO_SCALE;
538 /* always render glyphs to bitmaps */
539 load_flags |= FT_LOAD_RENDER;
541 if ( type & ftc_old_image_flag_unhinted )
542 load_flags |= FT_LOAD_NO_HINTING;
544 if ( type & ftc_old_image_flag_autohinted )
545 load_flags |= FT_LOAD_FORCE_AUTOHINT;
547 typ->flags = load_flags;
552 FT_EXPORT( FT_Error )
553 FTC_Image_Cache_New( FTC_Manager manager,
554 FTC_ImageCache *acache );
556 FT_EXPORT( FT_Error )
557 FTC_Image_Cache_Lookup( FTC_ImageCache icache,
558 FTC_OldImage_Desc* desc,
563 FT_EXPORT_DEF( FT_Error )
564 FTC_Image_Cache_New( FTC_Manager manager,
565 FTC_ImageCache *acache )
567 return FTC_ImageCache_New( manager, (FTC_ImageCache*)acache );
572 FT_EXPORT_DEF( FT_Error )
573 FTC_Image_Cache_Lookup( FTC_ImageCache icache,
574 FTC_OldImage_Desc* desc,
578 FTC_ImageTypeRec type0;
582 return FTC_Err_Invalid_Argument;
584 ftc_image_type_from_old_desc( &type0, desc );
586 return FTC_ImageCache_Lookup( (FTC_ImageCache)icache,
593 #endif /* FT_CONFIG_OPTION_OLD_INTERNALS */
598 * basic small bitmap cache
603 FT_CALLBACK_TABLE_DEF
604 const FTC_SFamilyClassRec ftc_basic_sbit_family_class =
607 sizeof( FTC_BasicFamilyRec ),
608 ftc_basic_family_compare,
609 ftc_basic_family_init,
610 0, /* FTC_MruNode_ResetFunc */
611 0 /* FTC_MruNode_DoneFunc */
613 ftc_basic_family_get_count,
614 ftc_basic_family_load_bitmap
618 FT_CALLBACK_TABLE_DEF
619 const FTC_GCacheClassRec ftc_basic_sbit_cache_class =
625 ftc_basic_gnode_compare_faceid,
628 sizeof ( FTC_GCacheRec ),
632 (FTC_MruListClass)&ftc_basic_sbit_family_class
636 /* documentation is in ftcache.h */
638 FT_EXPORT_DEF( FT_Error )
639 FTC_SBitCache_New( FTC_Manager manager,
640 FTC_SBitCache *acache )
642 return FTC_GCache_New( manager, &ftc_basic_sbit_cache_class,
643 (FTC_GCache*)acache );
647 /* documentation is in ftcache.h */
649 FT_EXPORT_DEF( FT_Error )
650 FTC_SBitCache_Lookup( FTC_SBitCache cache,
657 FTC_BasicQueryRec query;
658 FTC_Node node = 0; /* make compiler happy */
665 /* other argument checks delayed to FTC_Cache_Lookup */
667 return FTC_Err_Invalid_Argument;
671 #if defined( FT_CONFIG_OPTION_OLD_INTERNALS ) && ( FT_INT_MAX > 0xFFFFU )
673 /* This one is a major hack used to detect whether we are passed a
674 * regular FTC_ImageType handle, or a legacy FTC_OldImageDesc one.
676 if ( (FT_ULong)type->width >= 0x10000L )
678 FTC_OldImageDesc desc = (FTC_OldImageDesc)type;
681 query.attrs.scaler.face_id = desc->font.face_id;
682 query.attrs.scaler.width = desc->font.pix_width;
683 query.attrs.scaler.height = desc->font.pix_height;
684 query.attrs.load_flags = desc->flags;
688 #endif /* FT_CONFIG_OPTION_OLD_INTERNALS */
691 if ( (FT_ULong)(type->flags - FT_INT_MIN) > FT_UINT_MAX )
693 FT_TRACE1(( "FTC_ImageCache_Lookup: higher bits in load_flags" ));
694 FT_TRACE1(( "0x%x are dropped\n", (type->flags & ~((FT_ULong)FT_UINT_MAX)) ));
697 query.attrs.scaler.face_id = type->face_id;
698 query.attrs.scaler.width = type->width;
699 query.attrs.scaler.height = type->height;
700 query.attrs.load_flags = (FT_UInt)type->flags;
703 query.attrs.scaler.pixel = 1;
704 query.attrs.scaler.x_res = 0; /* make compilers happy */
705 query.attrs.scaler.y_res = 0;
707 /* beware, the hash must be the same for all glyph ranges! */
708 hash = FTC_BASIC_ATTR_HASH( &query.attrs ) +
709 gindex / FTC_SBIT_ITEMS_PER_NODE;
711 #if 1 /* inlining is about 50% faster! */
712 FTC_GCACHE_LOOKUP_CMP( cache,
713 ftc_basic_family_compare,
720 error = FTC_GCache_Lookup( FTC_GCACHE( cache ),
723 FTC_GQUERY( &query ),
729 *ansbit = FTC_SNODE( node )->sbits +
730 ( gindex - FTC_GNODE( node )->gindex );
743 /* documentation is in ftcache.h */
745 FT_EXPORT_DEF( FT_Error )
746 FTC_SBitCache_LookupScaler( FTC_SBitCache cache,
754 FTC_BasicQueryRec query;
755 FTC_Node node = 0; /* make compiler happy */
762 /* other argument checks delayed to FTC_Cache_Lookup */
763 if ( !ansbit || !scaler )
764 return FTC_Err_Invalid_Argument;
768 /* FT_Load_Glyph(), FT_Load_Char() take FT_UInt flags */
769 if ( load_flags > FT_UINT_MAX )
771 FT_TRACE1(( "FTC_ImageCache_LookupScaler: higher bits in load_flags" ));
772 FT_TRACE1(( "0x%x are dropped\n", (load_flags & ~((FT_ULong)FT_UINT_MAX)) ));
775 query.attrs.scaler = scaler[0];
776 query.attrs.load_flags = (FT_UInt)load_flags;
778 /* beware, the hash must be the same for all glyph ranges! */
779 hash = FTC_BASIC_ATTR_HASH( &query.attrs ) +
780 gindex / FTC_SBIT_ITEMS_PER_NODE;
782 FTC_GCACHE_LOOKUP_CMP( cache,
783 ftc_basic_family_compare,
792 *ansbit = FTC_SNODE( node )->sbits +
793 ( gindex - FTC_GNODE( node )->gindex );
806 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
808 FT_EXPORT( FT_Error )
809 FTC_SBit_Cache_New( FTC_Manager manager,
810 FTC_SBitCache *acache );
812 FT_EXPORT( FT_Error )
813 FTC_SBit_Cache_Lookup( FTC_SBitCache cache,
814 FTC_OldImage_Desc* desc,
819 FT_EXPORT_DEF( FT_Error )
820 FTC_SBit_Cache_New( FTC_Manager manager,
821 FTC_SBitCache *acache )
823 return FTC_SBitCache_New( manager, (FTC_SBitCache*)acache );
827 FT_EXPORT_DEF( FT_Error )
828 FTC_SBit_Cache_Lookup( FTC_SBitCache cache,
829 FTC_OldImage_Desc* desc,
833 FTC_ImageTypeRec type0;
837 return FTC_Err_Invalid_Argument;
839 ftc_image_type_from_old_desc( &type0, desc );
841 return FTC_SBitCache_Lookup( (FTC_SBitCache)cache,
848 #endif /* FT_CONFIG_OPTION_OLD_INTERNALS */