src/cache/ftccache.c, src/cache/ftcglyph.c, src/cache/ftcmanag.c,
src/cache/ftcsbits.c:
fixing some annoying bugs and inefficiencies in the cache sub-system.
* src/cache/*, include/freetype/cache/*: fixing a bug after heavy
testing. The current sources are now "release candidates" for the
final version of the cache sub-system
* Jamfile: updating "refdoc" target, and adding "autohint" to the
list of modules to build. Both the autohinter and autofitter will be
built by default. But which one will be used is determined by
the content of "ftmodule.h"
* src/autofit/*: much updates, but the code is still buggy as hell.
Aargh..
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.
include/freetype/cache/ftcmanag.h,
include/freetype/cache/ftccache.h,
include/freetype/cache/ftcmanag.h,
include/freetype/cache/ftcmru.h (added),
include/freetype/cache/ftlru.h (removed),
include/freetype/cache/ftcsbits.h,
include/freetype/cache/ftcimage.h,
include/freetype/cache/ftcglyph.h,
src/cache/ftcmru.c,
src/cache/ftcmanag.c,
src/cache/ftccache.c,
src/cache/ftcglyph.c,
src/cache/ftcimage.c,
src/cache/ftcsbits.c,
src/cache/ftccmap.c,
src/cache/ftcbasic.c (added),
src/cache/ftclru.c (removed):
*Complete* rewrite of the cache sub-system to "solve" the
following points:
- all public APIs have been moved to FT_CACHE_H, everything
under "include/freetype/cache" is only needed by client
applications that want to implement their own caches
- a new function named FTC_Manager_RemoveFaceID to deal
with the uninstallation of FaceIDs
- the image and sbit cache are now abstract classes, that
can be extended much more easily by client applications
- better performance in certain areas. Further optimizations
to come shortly anyway...
- the FTC_CMapCache_Lookup function has changed its signature,
charmaps can now only be retrieved by index
- FTC_Manager_Lookup_Face => FTC_Manager_LookupFace
FTC_Manager_Lookup_Size => FTC_Manager_LookupSize (still in
private header for the moment)
src/autohint/ahhint.c: fixed blue-scale problem
* src/cache/ftccache.c: fixed small bug that could crash the cache
in rare circumstances (mostly with broken fonts)
* include/freetype/internal/ftobjs.h, src/base/ftobjs.c, src/bdf/bdfdrivr.c,
src/pcf/pcfdriver.c, src/pfr/pfrsbit.c, src/sfnt/ttsbit.c,
src/type42/t42objs.c, src/winfonts/winfnt.c: introduced three new functions
to deal with glyph bitmaps within FT_GlyphSlot objects. these are:
ft_glyphslot_free_bitmap
ft_glyphslot_alloc_bitmap
ft_glyphslot_set_bitmap
these are much more convenient to use than managing the FT_GLYPH_OWN_BITMAP
flag manually. the font drivers have been modified to use them as well.
* src/cache/ftlru.c: fixed an invalid assertion check
to control memory debugging with FreeType. See the description of
"FT2_DEBUG_MEMORY", "FT2_ALLOC_TOTAL_MAX" and "FT2_ALLOC_COUNT_MAX"
in DEBUG.TXT
* src/cache/ftccache.c, src/cache/ftccmap.c, src/cache/ftcsbits.c,
ftlru.c: fixed the cache sub-system to correctly deal with out-of-memory
conditions.
* src/pfr/pfrobjs.c, src/pfr/pfrsbits.c: fixing compiler warnings and a
small memory leak
* src/psaux/psobjs.c (t1_reallocate_table): fixed a bug (memory leak) that
only happened when trying to resize an array would end in an OOM.
* src/smooth/ftgrays.c: removed compiler warnings / volatile bug
* src/truetype/ttobjs.c: removed segmentation fault that happened in
tight memory environments.
when available in Asian fonts
* src/sfnt/ttload.c, src/base/ftobjs.c: changed "asian" to "Asian" in
comments
* src/truetype/ttdriver.c (Set_Char_Sizes): fixed a rounding bug when
computing the scale factors for a given character size in points with
resolution.
the API is likely to change however.
* src/base/fttrigon.c (FT_Angle_Diff): fixing function, it returned
invalid values for large negative angle differences (resulting in
incorrect stroker computations, among other things)
* src/cache/ftccache.c (ftc_node_unlink): removing incorrect
assertion, and changing code to avoid hash table size contraction
* src/base/Jamfile, src/base/rules.mk, src/base/descrip.mms:
adding "ftstroker.obj" to default build, as optional component
* include/freetype/config/ftoption.h, src/gzip/ftgzip.c: added
support for the FT_CONFIG_OPTION_SYSTEM_ZLIB option, used to specify
the use of system-wide zlib.
Note that this macro, as well as FT_CONFIG_OPTION_BYTECODE_INTERPRETER,
is not #undef-ed anymore. This allows the build system to define them
depending on the configuration (typically by adding -D flags at
compile time).
* src/sfnt/ttcmap0.c (tt_face_build_cmaps): removed compiler warnings
in optimized mode relative to the "volatile" local variables. This was
not a compiler bug after all, but the fact that a pointer to a volatile
variable is not the same than a volatile pointer to a variable :-)
the fix was to change "volatile FT_Byte* p"
into "FT_Byte* volatile p"
* src/pfr/pfrload.c, src/pfr/pfrdrivr.c, src/gzip/inftrees.c: removed
compiler warnings in optimized modes
* src/gzip/*.[hc]: modified our ZLib copy in order to prevent exporting
any zlib function names outside of the component. This prevents linking
problems on some platforms, when applications want to link FreeType
_and_ ZLib together.
2002-11-05 Juliusz <jch@pps.jussieu.fr>
* src/psaux/psobjs.c (ps_table_add): modified increment loop in
order to implement exponential behaviour
debug mode of template instantiation
* src/cff/cffparse.c: fixed the CFF table loader. It didn't accept
empty arrays, and this prevented the loading of certain fonts.
* src/pshinter/pshalgo2.c, src/pshinter/pshalgo3.c: adding fix to
prevent seg fault when hints are provided in an empty glyph !!
* include/freetype/ftimage.h: removed incorrect "zft_" definitions
and updated constants documentation comments
* include/freetype/freetype.h (FT_FaceRec): updating documentation
comment. The "descender" value is always *negative*, not positive !
include/freetype/config/ftmodule.h: updated to correctly support
sub-pixel rendering
* include/freetype/cache/ftcimage.h, include/freetype/cache/ftcsbits.h,
src/cache/ftcimage.c, src/cache/ftcsbit.c: updated to support sub-pixel
rendering correctly. Definition of FTC_ImageTypeRec that replaces the
obsolete FTC_ImageDesc, and has slightly different fields. The
image type is now determined directly by "load_flags" values.
* src/autohint/ahtypes.h, src/autohint/ahhint.c,
src/pshinter/pshalgo3.c, src/pshinter/pshalgo3.h: various enhancements
to the automatic and Postscript hinters !! and sub-pixel hinting now
works correctly (see demo programs)
want to list them all here. The operations performed were all logical
transformations of the sources:
- trying to convert all enums and constants to CAPITALIZED_STYLE, with
#define definitions like
#define my_old_constants MY_NEW_CONSTANT
- big, big update of the documentation comments
* include/freetype/freetype.h, src/base/ftobjs.c, src/smooth/ftsmooth.c,
include/freetype/ftimage.h: adding support for LCD-optimized rendering
though the new constants/enums:
FT_RENDER_MODE_LCD, FT_RENDER_MODE_LCD_V
FT_PIXEL_MODE_LCD, FT_PIXEL_MODE_LCD_V
this is still work in progress, don't expect everything to work correctly
though most of the features have been implemented.
* adding new FT_LOAD_XXX flags, used to specify both hinting and rendering
targets:
FT_LOAD_TARGET_NORMAL :: anti-aliased hinting & rendering
FT_LOAD_TARGET_MONO :: monochrome bitmaps
FT_LOAD_TARGET_LCD :: horizontal RGB/BGR decimated hinting & rendering
FT_LOAD_TARGET_LCD_V :: vertical RGB/BGR decimated hinting & rendering
note that FT_LOAD_TARGET_NORMAL is 0, which means that the default
behaviour of the font engine is _unchanged_.
- fixed the infamous bug that caused the cache to crash with large fonts.
the hash table buckets array wasn't shrinked correctly during cache
flushes..
Werner Lemberg
David Turner