Point numbers for FreeType's implementation of hinting masks are
collected before the final number of points of a glyph has been
determined; in particular, the code for handling the `endchar'
opcode can reduce the number of points.
* src/pshinter/pshalgo.c (psh_glyph_find_strong_points): Assure that
`end_point' is not larger than `glyph->num_points'.
This bug has been introduced with commit 2415cbf3.
* src/base/ftobjs.c (FT_Get_First_Char, FT_Get_Next_Char): Protect
against endless loop in case of corrupted font header data.
Suggested by Graham.
* src/autofit/afhints.c (af_glyph_hints_compute_inflections):
Removed.
(af_glyph_hints_reload): Remove third argument.
Update all callers.
Acroread does the same.
* src/truetype/ttgload.c (TT_Process_Composite_Glyph): Call
`Update_Max' to adjust size of instructions array if necessary and
add a rough safety check.
(load_truetype_glyph): Save `loader->byte_len' before recursive
call.
* src/truetype/ttinterp.h, src/truetype/ttinterp.c (Update_Max):
Declare it as FT_LOCAL.
Previously we discovered fonts which used `setcurrentpoint' to set
the initial point of a contour to 0,0. This caused FreeType to
raise an error, because the `setcurrentpoint' operator is only
supposed to be used with the results from an OtherSubr subroutine.
This was fixed by simply ignoring the error and carrying on.
Now we have found a font which uses setcurrentpoint to actually
establish a non-zero point for a contour during the course of a
glyph program. FWIW, these files may be produced by an application
called `Intaglio' on the Mac, when converting TrueType fonts to
Type 1.
The fix allows the new invalid behaviour, the old invalid behaviour
and real proper usage of the operator to work the same way as Adobe
interpreters apparently do.
(t1_decoder_parse_charstrings): Make `setcurrentpoint' use the top
two elements of the stack to establish unconditionally the current x
and y coordinates.
Make the `flex' subroutine handling (OtherSubr 0) put the current
x,y coordinates onto the stack, instead of two dummy uninitialised
values.
This is based on code written by Lifter
<http://unixforum.org/index.php?showuser=11691>. It fixes
FreeDesktop bug #27386.
* src/base/ftlcdfil.c (FT_Library_SetLcdFilterWeights): New
function.
* include/freetype/ftlcdfil.h: Updated.
* docs/CHANGES: Updated.
We do this by avoiding memory allocation and file I/O. This is
Savannah patch #7104.
* src/cff/cfftypes.h: Include PS cmaps service and
FT_INTERNAL_POSTSCRIPT_HINTS_H.
(CFF_SubFontRec): Remove `num_local_subrs'.
(CFF_FontRec): Add `num_strings', `strings', and `string_pool'
fields.
Remove `string_index' and `num_global_subrs' fields.
Use real types instead of `void' for `pshinter' and `psnames' fields.
* src/cff/cffload.c: Don't include PS cmaps service.
(cff_index_get_pointers): Add `pool' parameter which allows to
insert an extra NUL character for each String INDEX entry.
(cff_index_get_name): Make it a local function.
(cff_index_get_string): New function.
(cff_subfont_load): Updated.
(cff_font_load): Initialize `num_strings', `strings', and
`string_pool' fields in the `CFF_FontRec' structure.
(cff_index_get_sid_string): Use `cff_index_get_string' instead of
`cff_index_get_name'.
(cff_font_done): Updated.
* src/cff/cffload.h: Don't include PS cmaps service.
(cff_index_get_string): Added.
(cff_index_get_sid_string): Updated.
* src/cff/cffobjs.c: Don't include PS cmaps service and
FT_INTERNAL_POSTSCRIPT_HINTS_H.
(cff_size_get_globals_funcs, cff_slot_init): Updated.
(cff_face_init): Follow `cff_index_get_name',
`cff_index_get_string', and `cff_index_get_sid_string' changes.
* src/cff/cffcmap.c (cff_sid_free_glyph_name): Removed.
(cff_sid_to_glyph_name): Use `cff_index_get_cid_string'.
(cff_cmap_unicode_init): Updated.
* src/cff/cffdrivr.c: Don't include PS cmap service.
(cff_get_glyph_name): Avoid unnecessary lookup for POSTSCRIPT_CMAPS
service.
(cff_get_glyph_name, cff_ps_get_font_info, cff_get_ros): Follow API
`cff_index_get_sid_string' change.
(cff_get_name_index): Use `cff_index_get_string' instead of
`cff_index_get_name'.
* src/cff/cffgload.c: Don't include FT_INTERNAL_POSTSCRIPT_HINTS_H.
(cff_decoder_init, cff_decoder_prepare): Updated.
Initialize phantom points before calling the incremental interface
to update glyph metrics.
* src/truetype/ttgload.c (tt_get_metrics_incr_overrides)
[FT_CONFIG_OPTION_INCREMENTAL]: New function, split off from...
(tt_get_metrics): This.
Updated.
(load_truetype_glyph): Use tt_get_metrics_incr_overrides.
==========================
Tag sources with `VER-2-3-12'.
* docs/CHANGES: Updated.
* docs/VERSION.DLL: Update documentation and bump version number to
2.3.12.
* README, Jamfile (RefDoc),
builds/win32/vc2005/freetype.vcproj, builds/win32/vc2005/index.html,
builds/win32/vc2008/freetype.vcproj, builds/win32/vc2008/index.html,
builds/win32/visualc/freetype.dsp,
builds/win32/visualc/freetype.vcproj,
builds/win32/visualc/index.html, builds/win32/visualce/freetype.dsp,
builds/win32/visualce/freetype.vcproj,
builds/win32/visualce/index.html,
builds/wince/vc2005-ce/freetype.vcproj,
builds/wince/vc2005-ce/index.html,
builds/wince/vc2008-ce/freetype.vcproj,
builds/wince/vc2008-ce/index.html: s/2.3.11/2.3.12/, s/2311/2312/.
* include/freetype/freetype.h (FREETYPE_PATCH): Set to 12.
* builds/unix/configure.raw (version_info): Set to 10:0:4.
Since we consider `sbw' for the horizontal direction only, we still have
to synthesize vertical metrics if the user wants to use the vertical
writing direction.
* src/cff/cffgload.c (cff_slot_load), src/cid/cidgload.c
(cid_slot_load_glyph), src/type1/t1gload.c (T1_Load_Glyph):
Synthesize vertical metrics (only) if FT_LOAD_VERTICAL_LAYOUT is
set.
After long discussion, we now consider the character width vector
(wx,wy) returned by the `sbw' Type 1 operator as being part of *one*
direction only. For example, if you are using the horizontal
writing direction, you get the horizontal and vertical components of
the advance width for this direction. Note that OpenType and CFF fonts
don't have such a vertical component; instead, the GPOS table can be
used to generate two-dimensional advance widths (but this isn't
handled by FreeType).
* include/freetype/ftincrem.h (FT_Incremental_MetricsRec): Add
`advance_v' field to hold the vertical component of the advance
value.
* src/truetype/ttgload.c (tt_get_metrics), src/cff/cffgload.c
(cff_slot_load), src/type1/t1gload.c
(T1_Parse_Glyph_And_Get_Char_String), src/cid/cidgload.c
(cid_load_glyph): Use it.
Issue #28226 involved a work-around for a font which used the
`setcurrentpoint' operator in an invalid way; this operator is only
supposed to be used with the result of OtherSubrs, and the font used
it directly. The supplied patch removed the block of code which
checked this usage entirely.
This turns out to be a Bad Thing. If `setcurrentpoint' is being
used correctly it should reset the flex flag in the decoder. If we
don't do this then the flag never gets reset and we omit any further
contours from the glyph (at least until we close the path or
similar).
* src/psaux/t1decode.c (t1_decoder_parse_charstrings)
<op_setcurrentpoint>: Handle `flex_state' correctly.
Ghostscript requires the incremental font interface for handling
some Postscript documents. It is moving to using FreeType as its
primary renderer; supporting this in the default build makes it
Ghostscript to be linked against the system FreeType when one is
available.
* include/freetype/config/ftoption.h (FT_CONFIG_OPTION_INCREMENTAL):
Uncomment.
* src/base/ftglyph.c (FT_Glyph_To_Bitmap) [FT_CONFIG_OPTION_PIC]:
Declare `library' for FT_BITMAP_GLYPH_CLASS_GET.
* src/base/ftinit.c (ft_destroy_default_module_classes,
ft_create_default_module_classes): Use proper casts (needed for C++
compilation).
* src/sfnt/ttcmap.c (tt_cmap13_class_rec): Use FT_DEFINE_TT_CMAP.
Reported by Sean.
* src/base/ftdbgmem.c [!FT_DEBUG_MEMORY]: ANSI C doesn't like empty
source files; however, some compilers warn about an unused variable
declaration. This is now replaced with a typedef.
There exist corrupt, subsetted fonts (embedded in PDF files) which
contain a private dict that ends with an unterminated floating point
number (no operator following). We now ignore this error (as
acrobat does).
* src/cff/cffparse.c (cff_parser_run): Don't emit a syntax error for
unterminated floating point numbers.
This fixes Savannah bug #28226.
At least two wild PostScript files of unknown provenance contain
Type 1 fonts, apparently converted from TrueType fonts in earlier
PDF versions of the files, which use the `setcurrentpoint' operator
inappropriately.
FreeType currently throws an error in this case, but Ghostscript and
Adobe Distiller both accept the fonts and ignore the problem. This
commit #ifdefs out the check so PostScript interpreters using
FreeType can render these files.
The specification says `setcurrentpoint' should only be used to set
the point after a `Subr' call, but these fonts use it to set the
initial point to (0,0). Unnecessarily so, as they correctly use an
`hsbw' operation which implicitly sets the initial point.
Reported by Sean McBride <sean@rogue-research.com>.
* src/tools/apinames.c (read_header_file)<STATE_TYPE>: Use a cast to
`int', as specified in the printf(3) man page.
* src/cff/cffobjs.c (cff_face_init), src/cid/cidobjs.c
(cid_face_init), src/type1/t1afm.c (T1_Read_Metrics),
src/type1/t1objs.c (T1_Face_Init): Don't use unsigned constant
values for rounding if the argument can be negative.
* src/cff/cffgload.c (CFF_Operator, cff_argument_counts): Handle
`seac', `sbw', and `setcurrentpoint' opcodes.
(cff_compute_bias): Add parameter to indicate the charstring type.
Update all callers.
(cff_operator_seac): Add parameter for side bearing.
(cff_decoder_parse_charstrings): Updated for more Type1 support.
Reported by Jeremy Manson <jeremy.manson@gmail.com>.
src/truetype/ttgload.c (load_truetype_glyph): Add parameter to
quickly load the glyph header only.
Update all callers.
(tt_loader_init): Add parameter to quickly load the `glyf' table
only.
Update all callers.
(TT_Load_Glyph): Compute linear advance values for embedded bitmap
glyphs too.
* src/cff/cffgload.c (cff_decoder_parse_charstrings) <cff_op_get,
cff_op_put>: Appendix B of Adobe Technote #5177 limits the number of
elements for the `get' and `put' operators to 32.
* src/cff/cffgload.h (CFF_MAX_TRANS_ELEMENTS): Define.
(CFF_Decoder): Use it for `buildchar' and remove `len_buildchar'.
Problem and solution reported by Ning Dong <flintning@163.com>.
* src/cff/cffgload.c (cff_decoder_parse_charstrings) <cff_op_dup>:
Increase `args' by 2, not 1.
==========================
Tag sources with `VER-2-3-11'.
* docs/VERSION.DLL: Update documentation and bump version number to
2.3.11.
* README, Jamfile (RefDoc), builds/win32/visualc/index.html,
builds/win32/visualc/freetype.dsp,
builds/win32/visualc/freetype.vcproj,
builds/win32/visualce/index.html,
builds/win32/visualce/freetype.dsp,
builds/win32/visualce/freetype.vcproj: s/2.3.10/2.3.11/, s/2310/2311/.
* include/freetype/freetype.h (FREETYPE_PATCH): Set to 11.
* builds/unix/configure.raw (version_info): Set to 9:22:3.
==========================
Tag sources with `VER-2-3-10'.
* builds/toplevel.mk (major, minor, patch): Fix regexp to allow more
than a single digit.
(dist): We now use git.
* docs/VERSION.DLL: Update documentation and bump version number to
2.3.10.
* README, Jamfile (RefDoc), builds/win32/visualc/index.html,
builds/win32/visualc/freetype.dsp,
builds/win32/visualc/freetype.vcproj,
builds/win32/visualce/index.html,
builds/win32/visualce/freetype.dsp,
builds/win32/visualce/freetype.vcproj: s/2.3.9/2.3.10/, s/239/2310/.
* include/freetype/freetype.h (FREETYPE_PATCH): Set to 10.
* builds/unix/configure.raw (version_info): Set to 9:21:3.
This was broken since version 2.3.0.
* src/raster/ftraster.c (count_table): Use pre-2.3.0 values (which
were then computed dynamically).
(Vertical_Gray_Sweep_Step): Updated.
(ft_black_render): Initialize `worker->gray_lines' (problem found by
valgrind).
(FT_RASTER_OPTION_ANTI_ALIASING, DEBUG_RASTER): Dont' #undef, just
comment out.
The calculation of `vertBearingX' is not defined in the OTF font
spec so FreeType does a `best effort' attempt. However, this value
is defined in the PDF and PostScript specs, and that algorithm is
better than the one FreeType currently uses:
FreeType: Use the middle of the bounding box as the X coordinate
of the vertical origin.
Adobe PDF spec: Use the middle of the horizontal advance vector as
the X coordinate of the vertical origin.
FreeType's algorithm goes wrong if you have a really small glyph
(like the full-width, circle-like dot at the end of the sentence, as
used in CJK scripts) with large bearings. With the FreeType
algorithm this dot gets centered on the baseline; with the PDF
algorithm it gets the correct location (in the top right). Note
that this is a serious issue, it's like printing the dot at the end
of a Roman sentence at the center of the textline instead of on the
baseline like it should. So i believe the PDF spec's algorithm
should be used in FreeType as well.
The `vertBearingY' value for such small glyphs is also very strange
if no `vmtx' information is present, since the height of the bbox is
not representable for the height of the glyph visually (the
whitespace up to the baseline is part of the glyph). The fix also
includes some code for a better estimate of `vertBearingY'.
* src/base/ftobjs.c (ft_synthesize_vertical_metrics): `vertBearingX'
is now calculated as described by the Adobe PDF Spec. Estimate for
`vertBearingY' now works better for small glyphs completely above or
below the baseline into account.
* src/cff/cffgload.c (cff_slot_load): `vertBearingX' is now
calculated as described by the Adobe PDF Spec. Vertical metrics
information was always ignored when FT_CONFIG_OPTION_OLD_INTERNALS
was not defined.
* src/truetype/ttgload.c (compute_glyph_metrics): `vertBearingX' is
now calculated as described by the Adobe PDF Spec.
* include/freetype/internal/t1types.h (T1_EncodingRecRec_): Update
comment to reflect revised code_last meaning.
* src/type1/t1load.c (T1_Open_Face), src/type42/t42objs.c
(T42_Open_Face): Assign max_char as highest character code + 1 and
use this for T1_EncodingRecRec_::code_last.
* src/psaux/t1cmap.c (t1_cmap_custom_init): Follow revised
T1_EncodingRecRec_::code_last meaning.
Bug reported by Ivan Nincic <inincic@pdftron.com>.
* src/cff/cffgload.c (cff_slot_load): Thinko: Check `xx' element of
`font_matrix' also.
* docs/CHANGES: Updated.
* src/truetype/ttobjs.c (tt_size_init_bytecode): Don't reset x_ppem
and y_ppem. Otherwise the `*_CVT_Stretched' functions in ttinterp.c
get never called.
An anonymous guy suggested this change on Savannah, and it seems to
be the right solution.
This fixes Savannah bug #26867.
Previously, only integers have been used which can lead to serious
rounding errors.
However, fractional values are only used internally; after the
charstrings (of either Type 1 or 2) have been processed, the
resulting coordinates get rounded to integers currently -- before
applying scaling. This should be fixed; at the same time a new load
flag should be introduced, to be used in combination with
FT_LOAD_NO_SCALE, which indicates that font units are returned in
16.16 format. Similarly, the incremental interface should be
extended to allow fractional values for metrics.
* include/freetype/internal/psaux.h (T1_BuilderRec): Remove `shift'
field.
* include/freetype/internal/pshints.h (T1_Hints_SetStemFunc,
T1_Hints_SetStem3Func): Use FT_Fixed for coordinates.
* src/psaux/psobjs.c: Include FT_INTERNAL_CALC_H.
(t1_build_add_point): Always convert fixed to integer.
* src/psaux/t1decode.c (t1_decoder_parse_charstrings):
Use 16.16 format everywhere (except for large integers followed by a
`div').
[CAN_HANDLE_NON_INTEGRAL_T1_OPERANDS]: Remove #ifdef and activate
code uncoditionally.
Add support for random numbers and update remaining code
accordingly; this should work now.
(t1_operator_seac): Updated.
* src/psaux/pshrec.c: Include FT_INTERNAL_CALC_H.
(ps_hints_t1stem3, t1_hints_stem): Updated.
* src/cid/cidgload.c: Include FT_INTERNAL_CALC_H.
(cid_load_glyph) [FT_CONFIG_OPTION_INCREMENTAL],
(cid_face_compute_max_advance, cid_slot_load_glyph): Updated.
* src/type1/t1gload.c (T1_Parse_Glyph_And_Get_Char_String)
[FT_CONFIG_OPTION_INCREMENTAL], (T1_Get_Advances, T1_Load_Glyph):
Updated.
* src/type1/t1load.c: Include FT_INTERNAL_CALC_H.
* src/type1/t1objs.c (T1_Face_Init): Updated.
Normally, the SCANMODE instruction (if present) to set the drop-out
mode in a TrueType font is located in the `prep' table only and thus
valid for all glyphs. However, there are fonts like `pala.ttf'
which additionally contain this instruction in the hinting code of
some glyphs (but not all). As a result it can happen that a
composite glyph needs multiple drop-out modes for its subglyphs
since the rendering state gets reset for each subglyph.
FreeType collects the hinted outlines from all subglyphs, then it
sends the data to the rasterizer. It also sends the drop-out mode
-- after hinting has been applied -- and here is the error: It sends
the drop-out mode of the last subglyph only; drop-out modes of all
other subglyphs are lost.
This patch fixes the problem; it adds a second, alternative
mechanism to pass the drop-out mode: For each contour, the
rasterizer now checks the first `tags' array element. If bit 2 is
set, bits 5-7 contain the contour's drop-out mode, overriding the
global drop-out mode.
* include/freetype/ftimage.h (FT_CURVE_TAG_HAS_SCANMODE): New macro.
* src/truetype/ttgload.c (TT_Hint_Glyph): Store drop-out mode in
`tags[0]'.
* src/raster/ftraster.c (Flow_Up, Overshoot_Top, Overshoot_Bottom):
Use bits 3-5 instead of 0-2.
(New_Profile): Set the drop-out mode in the profile's `flags' field.
(Decompose_Curve): Check `tags[0]' and set `dropOutControl' if
necessary.
(Vertical_Sweep_Drop, Horizontal_Sweep_Drop,
Horizontal_Gray_Sweep_Drop, Draw_Sweep): Use the profile's drop-out
mode.
Two new constraints are introduced to better identify a `stub' -- a
concept which is only vaguely described in the OpenType
specification. The old code was too rigorous and suppressed more
pixel than it should.
. The intersection of the two profiles with the scanline is less
than a half pixel. Code related to this was already present in
the sources but has been commented out.
. The endpoint of the original contour forming a profile has a
distance (`overshoot') less than half a pixel to the scanline.
Note that the two additional conditions fix almost all differences
to the Windows rasterizer, but some problematic cases remain.
* src/raster/ftraster.c (Overshoot_Top, Overshoot_Bottom): New
macros for the `flags' field in the `TProfile' structure.
(IS_BOTTOM_OVERSHOOT, IS_TOP_OVERSHOOT): New macros.
(New_Profile, End_Profile): Pass overshoot flag as an argument and
set it accordingly.
Update callers.
(Vertical_Sweep_Drop, Horizontal_Sweep_Drop): Implement the two new
constraints.
* src/raster/ftraster.c (Set_High_Precision): Add two more bits to
the precision. This corrects rendering of some small glyphs, for
example, glyph `xi' in verdana.ttf at 13 ppem. Testing with ftbench
on my GNU/Linux box I don't see a performance degradation.
Suggested by Alexei Podtelezhnikov <apodtele@gmail.com>.
* src/raster/ftraster.c (Vertical_Sweep_Drop, Horizontal_Sweep_Drop,
Horizontal_Gray_Sweep_Drop): Do it.
* src/raster/ftraster.c (TFlow): Replace enumeration with...
(Flow_Up): This macro.
(TProfile): Replace `flow' member with `flags' bit field.
Update all affected code.
* src/base/ftobjs.c (FT_Load_Glyph): Alter check for permitted
matrices to allow rotations by multiples of 90°, not only unrotated,
possibly slanted matrices.
Reported by Krzysztof Kowalczyk <kkowalczyk@gmail.com>.
* src/autofit/aflatin2.c (af_latin2_hint_edges): Move declaration of
`n_edges' into `#if' block.
Reported by Krzysztof Kowalczyk <kkowalczyk@gmail.com>.
* src/pcf/pcfdrivr.c (PCF_Face_Init) [!FT_CONFIG_OPTION_USE_ZLIB]:
Make it work.
Simplify #ifdef logic.
Problem reported by Krzysztof Kotlenga <pocek@users.sf.net>.
* src/raster/raster.c (Vertical_Sweep_Drop, Horizontal_Sweep_Drop,
Horizontal_Gray_Sweep_Drop): For smart drop-out mode, if
intersections are equally distant relative to next pixel center,
select the left pixel, not the right one.
This fixes FreeDesktop bug #21197.
* src/autofit/afglobal.c (AF_DIGIT): New macro.
(af_face_globals_compute_script_coverage): Mark ASCII digits in
`glyph_scripts' array.
(af_face_globals_get_metrics): Updated.
(af_face_globals_is_digit): New function.
* src/autofit/afglobal.h: Updated.
(AF_ScriptMetricsRec): Add `digits_have_same_width' flag.
* src/autofit/aflatin.c: Include FT_ADVANCES_H.
(af_latin_metrics_check_digits): New function.
(af_latin_metrics_init): Use it.
* src/autofit/aflatin.h: Updated.
* src/autofit/afcjk.c (af_cjk_metrics_init): Updated.
* src/autofit/aflatin2.c: Similar changes as with aflatin.c.
* src/autofit/afloader.c (af_loader_load_g): Test digit width.
* docs/CHANGES: Document it.
Problems reported by suyu@cooee.cn.
* src/smooth/ftgrays.c (FT_DEFINE_OUTLINE_FUNCS,
FT_DEFINE_RASTER_FUNCS) [_STANDALONE_]: Define.
[!_STANDALONE_]: Include ftspic.h only here.
(ras): Define/declare after definition of `TWorker'.
Use `RAS_VAR_' where necessary.
* include/freetype/internal/autohint.h add macros to init
instances of FT_AutoHinter_ServiceRec.
* src/autofit/afmodule.h declare autofit_module_class
using macros from ftmodapi.h,
when FT_CONFIG_OPTION_PIC is defined create and destroy
functions will be declared.
* src/autofit/afmodule.c when FT_CONFIG_OPTION_PIC is defined
af_autofitter_service and autofit_module_class structs
will have functions to init or create and destroy them
instead of being allocated in the global scope.
And macros will be used from afpic.h in order to access them.
* src/autofit/aftypes.h add macros to init and declare
instances of AF_ScriptClassRec.
* src/autofit/afcjk.h declare af_cjk_script_class
using macros from aftypes.h,
when FT_CONFIG_OPTION_PIC is defined init function will be declared.
* src/autofit/afcjk.c when FT_CONFIG_OPTION_PIC is defined
af_cjk_script_class struct will have function to init it instead of
being allocated in the global scope.
* src/autofit/afdummy.h declare af_dummy_script_class
using macros from aftypes.h,
when FT_CONFIG_OPTION_PIC is defined init function will be declared.
* src/autofit/afdummy.c when FT_CONFIG_OPTION_PIC is defined
af_dummy_script_class struct will have function to init it instead of
being allocated in the global scope.
* src/autofit/afindic.h declare af_indic_script_class
using macros from aftypes.h,
when FT_CONFIG_OPTION_PIC is defined init function will be declared.
* src/autofit/afindic.c when FT_CONFIG_OPTION_PIC is defined
af_indic_script_class struct will have function to init it instead of
being allocated in the global scope.
* src/autofit/aflatin.h declare af_latin_script_class
using macros from aftypes.h,
when FT_CONFIG_OPTION_PIC is defined init function will be declared.
* src/autofit/aflatin.c when FT_CONFIG_OPTION_PIC is defined
af_latin_script_class struct will have function to init it instead of
being allocated in the global scope.
Change af_latin_blue_chars to be PIC-compatible by being a two
dimentional array rather than array of pointers.
* src/autofit/aflatin2.h declare af_latin2_script_class
using macros from aftypes.h,
when FT_CONFIG_OPTION_PIC is defined init function will be declared.
* src/autofit/aflatin2.c when FT_CONFIG_OPTION_PIC is defined
af_latin2_script_class struct will have function to init it instead of
being allocated in the global scope.
Change af_latin2_blue_chars to be PIC-compatible by being a two
dimentional array rather than array of pointers.
* src/autofit/afglobal.c when FT_CONFIG_OPTION_PIC is defined
af_script_classes array initialization was moved to afpic.c and
is later refered using macros defeined in afpic.h.
New Files:
* src/autofit/afpic.h declare struct to hold PIC globals for autofit
module and macros to access them.
* src/autofit/afpic.c implement functions to allocate, destroy and
initialize PIC globals for autofit module.
* src/autofit/autofit.c add new file to build: afpic.c.
* src/autofit/jamfile add new files to FT2_MULTI build: afpic.c.
* include/freetype/internal/pshints.h add macros to init
instances of PSHinter_Interface.
* src/pshinter/pshmod.h declare pshinter_module_class
using macros from ftmodapi.h,
when FT_CONFIG_OPTION_PIC is defined create and destroy
functions will be declared.
* src/pshinter/pshmod.c when FT_CONFIG_OPTION_PIC is defined
pshinter_interface and pshinter_module_class structs
will have functions to init or create and destroy them
instead of being allocated in the global scope.
And macros will be used from pshpic.h in order to access them.
New Files:
* src/pshinter/pshpic.h declare struct to hold PIC globals for pshinter
module and macros to access them.
* src/pshinter/pshpic.c implement functions to allocate, destroy and
initialize PIC globals for pshinter module.
* src/pshinter/pshinter.c add new file to build: pshpic.c.
* src/pshinter/jamfile add new files to FT2_MULTI build: pshpic.c.
* include/freetype/internal/services/svpscmap.h add macros to init
instances of FT_Service_PsCMapsRec.
* src/psnames/psmodule.h declare psnames_module_class
using macros from ftmodapi.h,
when FT_CONFIG_OPTION_PIC is defined create and destroy
functions will be declared.
* src/psnames/psmodule.c when FT_CONFIG_OPTION_PIC is defined
pscmaps_interface and pscmaps_services structs
and psnames_module_class array
will have functions to init or create and destroy them
instead of being allocated in the global scope.
And macros will be used from pspic.h in order to access them.
New Files:
* src/psnames/pspic.h declare struct to hold PIC globals for psnames
module and macros to access them.
* src/psnames/pspic.c implement functions to allocate, destroy and
initialize PIC globals for psnames module.
* src/psnames/psnames.c add new file to build: pspic.c.
* src/psnames/jamfile add new files to FT2_MULTI build: pspic.c.
* src/raster/ftrend1.h declare ft_raster1_renderer_class
and ft_raster5_renderer_class
using macros from ftrender.h,
when FT_CONFIG_OPTION_PIC is defined create and destroy
functions will be declared.
* src/smooth/ftrend1.c when FT_CONFIG_OPTION_PIC is defined
ft_raster1_renderer_class and ft_raster5_renderer_class structs
will have functions to init or create and destroy them
instead of being allocated in the global scope.
Macros will be used from rastpic.h in order to access
ft_standard_raster from the pic_container (allocated in ftraster.c).
In ft_raster1_render when PIC is enabled, the last letter of
module_name is used to verfy the renderer class rather than the
class pointer.
* src/raster/ftraster.c when FT_CONFIG_OPTION_PIC is defined
ft_standard_raster struct will have function to init it
instead of being allocated in the global scope.
New Files:
* src/raster/rastpic.h declare struct to hold PIC globals for raster
renderer and macros to access them.
* src/raster/rastpic.c implement functions to allocate, destroy and
initialize PIC globals for raster renderer.
* src/raster/raster.c add new file to build: rastpic.c.
* src/raster/jamfile add new files to FT2_MULTI build: rastpic.c.
* src/smooth/ftsmooth.h declare ft_smooth_renderer_class,
ft_smooth_lcd_renderer_class and ft_smooth_lcd_v_renderer_class
using macros from ftrender.h,
when FT_CONFIG_OPTION_PIC is defined create and destroy
functions will be declared.
* src/smooth/ftsmooth.c when FT_CONFIG_OPTION_PIC is defined
the following structs:
ft_smooth_renderer_class, ft_smooth_lcd_renderer_class
and ft_smooth_lcd_v_renderer_class
will have functions to init or create and destroy them
instead of being allocated in the global scope.
And macros will be used from ftspic.h in order to access
ft_grays_raster from the pic_container (allocated in ftgrays.c).
* src/smooth/ftgrays.h include FT_CONFIG_CONFIG_H
* src/smooth/ftgrays.c when FT_CONFIG_OPTION_PIC is NOT defined
func_interface was moved from gray_convert_glyph_inner function
to the global scope.
When FT_CONFIG_OPTION_PIC is defined
func_interface and ft_grays_raster structs
will have functions to init them
instead of being allocated in the global scope.
And func_interface will be allocated on the stack of
gray_convert_glyph_inner.
New Files:
* src/smooth/ftspic.h declare struct to hold PIC globals for smooth
renderer and macros to access them.
* src/smooth/ftspic.c implement functions to allocate, destroy and
initialize PIC globals for smooth renderer.
* src/smooth/smooth.c add new file to build: ftspic.c.
* src/smooth/jamfile add new files to FT2_MULTI build: ftspic.c.
* include/freetype/internal/services/svcid.h add macros to init
instances of FT_Service_CIDRec.
* include/freetype/internal/services/svpsinfo.h add macros to init
instances of FT_Service_PsInfoRec.
* src/cff/cffcmap.h declare cff_cmap_encoding_class_rec
and cff_cmap_unicode_class_rec using macros from
ftobjs.h, when FT_CONFIG_OPTION_PIC is defined create and destroy
functions will be declared.
* src/cff/cffcmap.c when FT_CONFIG_OPTION_PIC is defined
the following structs:
cff_cmap_encoding_class_rec and cff_cmap_unicode_class_rec
will have functions to init or create and destroy them
instead of being allocated in the global scope.
* src/cff/cffdrivr.h declare cff_driver_class using macros from
ftdriver.h, when FT_CONFIG_OPTION_PIC is defined create and destroy
functions will be declared.
* src/cff/cffdrivr.c when FT_CONFIG_OPTION_PIC is defined
the following structs:
cff_service_glyph_dict, cff_service_ps_info, cff_service_ps_name
cff_service_get_cmap_info, cff_service_cid_info, cff_driver_class,
and cff_services array
will have functions to init or create and destroy them
instead of being allocated in the global scope.
And macros will be used from cffpic.h in order to access them
from the pic_container.
Use macros from cffpic.h in order to access the
structs allocated in cffcmap.c
* src/cff/cffobjs.c Use macros from cffpic.h in order to access the
structs allocated in cffcmap.c
* src/cff/parser.c when FT_CONFIG_OPTION_PIC is defined
implement functions to create and destroy cff_field_handlers array
instead of being allocated in the global scope.
And macros will be used from cffpic.h in order to access it
from the pic_container.
New Files:
* src/cff/cffpic.h declare struct to hold PIC globals for cff
driver and macros to access them.
* src/cff/cffpic.c implement functions to allocate, destroy and
initialize PIC globals for cff driver.
* src/cff/cff.c add new file to build: cffpic.c.
* src/cff/jamfile add new files to FT2_MULTI build: cffpic.c.
* include/freetype/internal/services/svbdf.h add macros to init
instances of FT_Service_BDFRec.
* include/freetype/internal/services/svgldict.h add macros to init
instances of FT_Service_GlyphDictRec.
* include/freetype/internal/services/svpostnm.h add macros to init
instances of FT_Service_PsFontNameRec.
* include/freetype/internal/services/svsfnt.h add macros to init
instances of FT_Service_SFNT_TableRec.
* include/freetype/internal/services/svttcmap.h add macros to init
instances of FT_Service_TTCMapsRec.
* include/freetype/internal/sfnt.h add macros to init
instances of SFNT_Interface.
* src/sfnt/sfdriver.h declare sfnt_module_class using macros from
ftmodapi.h, when FT_CONFIG_OPTION_PIC is defined create and destroy
functions will be declared.
* src/sfnt/sfdriver.c when FT_CONFIG_OPTION_PIC is defined
the following structs:
sfnt_service_sfnt_table, sfnt_service_glyph_dict, sfnt_service_ps_name
tt_service_get_cmap_info, sfnt_service_bdf, sfnt_interface,
sfnt_module_class, and sfnt_services array
will have functions to init or create and destroy them
instead of being allocated in the global scope.
And macros will be used from sfntpic.h in order to access them
from the pic_container.
* src/sfnt/ttcmap.h add macros to init
instances of TT_CMap_ClassRec.
* src/sfnt/ttcmap.c when FT_CONFIG_OPTION_PIC is defined
the following structs:
tt_cmap0_class_rec, tt_cmap2_class_rec, tt_cmap4_class_rec
tt_cmap6_class_rec, tt_cmap8_class_rec, tt_cmap10_class_rec,
tt_cmap12_class_rec, tt_cmap14_class_rec and tt_cmap_classes array
will have functions to init or create and destroy them
instead of being allocated in the global scope.
And macros will be used from sfntpic.h in order to access them
from the pic_container.
The content of tt_cmap_classes is now described in the
new file 'ttcmapc.h'.
New Files:
* src/sfnt/sfntpic.h declare struct to hold PIC globals for sfnt
driver and macros to access them.
* src/sfnt/sfntpic.c implement functions to allocate, destroy and
initialize PIC globals for sfnt driver.
* src/sfnt/ttcmapc.h describing the content of
tt_cmap_classes allocated in ttcmap.c
* src/sfnt/sfnt.c add new file to build: sfntpic.c.
* src/sfnt/jamfile add new files to FT2_MULTI build: sfntpic.c.
* include/freetype/internal/services/svmm.h add macros to init
instances of FT_Service_MultiMastersRec.
* include/freetype/internal/services/svttglyf.h add macros to init
instances of FT_Service_TTGlyfRec.
* src/truetype/ttdriver.h declare tt_driver_class using macros from
ftdriver.h, when FT_CONFIG_OPTION_PIC is defined create and destroy
functions will be declared.
* src/truetype/ttdriver.c when FT_CONFIG_OPTION_PIC is defined
the following structs:
tt_service_gx_multi_masters, tt_service_truetype_glyf, tt_driver_class
and tt_services array,
will have functions to init or create and destroy them
instead of being allocated in the global scope.
And macros will be used from ttpic.h in order to access them
from the pic_container.
* src/truetype/ttobjs.c change trick_names array to be
PIC-compatible by being a two dimentional array rather than array
of pointers.
New Files:
* src/truetype/ttpic.h declare struct to hold PIC globals for truetype
driver and macros to access them.
* src/truetype/ttpic.c implement functions to allocate, destroy and
initialize PIC globals for truetype driver.
* src/truetype/truetype.c add new file to build: ttpic.c.
* src/truetype/jamfile add new files to FT2_MULTI build: ttpic.c.
* include/freetype/config/ftoption.h add FT_CONFIG_OPTION_PIC
* include/freetype/internal/ftobjs.h Add pic_container member to
FT_LibraryRec.
Add macros to declare and init instances of FT_CMap_ClassRec.
Add macros to init instances of FT_Outline_Funcs and FT_Raster_Funcs.
Add macros to declare, allocate and initialize modules
(FT_Module_Class).
Add macros to declare, allocate and initialize renderers
(FT_Renderer_Class).
Add macro to init instances of FT_Glyph_Class.
Add macros to declare, allocate and initialize drivers
(FT_Driver_ClassRec).
* include/freetype/internal/ftpic.h new file to declare the
FT_PIC_Container struct and the functions to allocate and detroy it.
* include/freetype/internal/ftserv.h add macros to allocate and
destory arrays of FT_ServiceDescRec.
* include/freetype/internal/internal.h define macro to include
ftpic.h.
New Files:
* src/base/ftpic.c implement functions to allocate and destory the
global pic_container.
* src/base/basepic.h declare struct to hold PIC globals for base and
macros to access them.
* src/base/basepic.c implement functions to allocate, destroy and
initialize PIC globals for base.
* src/base/ftinit.c when FT_CONFIG_OPTION_PIC is defined implement
functions that allocate and destroy ft_default_modules according to
FT_CONFIG_MODULES_H in the pic_container instead of the global scope
and use macro from basepic.h to access it.
* src/base/ftobjs.c add calls to the functions that allocate and
destroy the global pic_container when the library is created and
destroyed.
* src/base/jamfile add new files to FT2_MULTI build:
ftpic.c and basepic.c.
* src/base/ftbase.c add new files to build:
ftpic.c and basepic.c.
* src/base/ftglyph.c when FT_CONFIG_OPTION_PIC is defined
ft_bitmap_glyph_class and ft_outline_glyph_class will be allocated
in the pic_container instead of the global scope and use macros from
basepic.h to access them.
* src/base/ftbbox.c allocate bbox_interface stract on the stack
instead of the global scope when FT_CONFIG_OPTION_PIC is defined.
* src/base/ftstroke.c access ft_outline_glyph_class allocated in
ftglyph.c via macros from basepic.h
* src/cff/cffload.c, src/cff/cffload.h, src/cff/cffobjs.c,
src/cff/cffparse.c, src/cff/cffparse.h: Add library pointer to
'CFF_ParserRec' set by `cff_parser_init'.
Route library pointer from 'cff_face_init' to 'cff_subfont_load'
for `cff_parser_init'.
* src/cff/cffparse.c (CFF_Field_Handler): Move it to...
* src/cff/cffparse.h: This file, to be used by other C files.
Problem reported by Tavis Ormandy <taviso@google.com>.
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Don't allow
`width' or `pitch' to be larger than 0xFFFF.
* include/freetype/ftcid.h (FT_Get_CID_Is_Internally_CID_keyed,
FT_Get_CID_From_Glyph_Index): New functions.
* include/freetype/internal/services/svcid.h
(FT_CID_GetIsInternallyCIDKeyedFunc,
FT_CID_GetCIDFromGlyphIndexFunc): New function typedefs.
(CID Service): Use them.
* src/base/ftcid.c: Include FT_CID_H.
(FT_Get_CID_Is_Internally_CID_keyed, FT_Get_CID_From_Glyph_Index):
New functions.
* src/cff/cffdrivr.c (cff_get_is_cid, cff_get_cid_from_glyph_index):
New functions.
(cff_service_cid_info): Add them.
* src/cff/cffload.c (cff_font_load): Don't free `font->charset.sids'
-- it is needed for access as a CID-keyed font. It gets deleted
later on.
* src/cid/cidriver.c (cid_get_is_cid, cid_get_cid_from_glyph_index):
New functions.
(cid_service_cid_info): Add them.
* docs/CHANGES: Updated.
We now simply check for a valid `offset', no longer handling `delta
= 1' specially.
* src/sfnt/ttcmap.c (tt_cmap4_validate): Don't check `delta' for
last segment.
(tt_cmap4_set_range, tt_cmap4_char_map_linear,
tt_cmap4_char_map_binary): Check offset.
* src/builds/win32: Remove files for WinCE.
Move VC 2005 support to a separate directory.
Add directory for VC 2008 support.
* src/builds/wince: New directory hierarchy for WinCE compilers
(VC 2005 and VC 2008).
This patch fixes the following problems in ttsbit0.c:
. Bitmaps for compound glyphs were never allocated.
. `SBitDecoder' refused to load metrics if some other metrics have
already been loaded. This condition certainly makes no sense for
recursive calls, so I've just disabled it. Another possibility
would be resetting `decoder->metrics_loaded' to false before
loading each composite component. However, we must restore the
original metrics after finishing the recursion; otherwise we can
get a misaligned glyph.
. `tt_sbit_decoder_load_bit_aligned' incorrectly handled `x_pos',
causing some glyph components to be shifted too far to the right
(especially noticeable for small sizes).
Note that support for grayscale bitmaps (not necessarily compound) is
completely broken in ttsbit0.c.
* src/sfnt/tt_sbit_decoder_load_metrics: Always load metrics.
(tt_sbit_decoder_load_bit_aligned): Handle `x_pos' correctly in case
of `h == height'.
(tt_sbit_decoder_load_compound): Reset metrics after loading
components.
Allocate bitmap.
Closes Savannah BUG #25750
* src/sfnt/ttkern.c (tt_face_get_kerning): fix a bug
where a malformed table would be succesfully loaded but
later crash the engine during parsing.
* include/freetype/freetype.h: bump patch version to 9
* docs/CHANGES: document the ABI break in 2.3.8
* docs/VERSION.DLL: update version numbers table for 2.3.9
* builds/unix/configure.ac: update AC_INIT and version_info
numbers.
Instead, we define a new internal PS_FontExtraRec structure to
hold the additionnal field, then place it in various internal
positions of the corresponding FT_Face derived objects.
The main cycle in `blit_sbit' makes too many iterations: it actually
needs the count of lines in the source bitmap rather than in the
target image.
* src/sfnt/ttsbit.c (blit_sbit) [FT_CONFIG_OPTION_OLD_INTERNALS]:
Add parameter `source_height' and use it for main loop.
(Load_SBit_Single) [FT_CONFIG_OPTION_OLD_INTERNALS]: Updated.
* src/sfnt/sfobjs.c (sfnt_load_face): Test for bitmap strikes before
setting metrics and bbox values. This ensures that the check for a
font with neither a `glyf' table nor bitmap strikes can be performed
early enough to set metrics and bbox values too.
* include/freetype/config/ftconfig.h (FT_MulFix_i386): Make
assembler code work with gcc 2.95.3 (as used by the Haiku project).
Add `cc' register to the clobber list.
=========================
Tag sources with `VER-2-3-8'.
* docs/VERSION.DLL: Update documentation and bump version number to
2.3.8.
* README, Jamfile (RefDoc), builds/win32/visualc/index.html,
builds/win32/visualc/freetype.dsp,
builds/win32/visualc/freetype.vcproj,
builds/win32/visualce/index.html,
builds/win32/visualce/freetype.dsp,
builds/win32/visualce/freetype.vcproj: s/2.3.7/2.3.8/, s/237/238/.
* include/freetype/freetype.h (FREETYPE_PATCH): Set to 8.
* builds/unix/configure.raw (version_info): Set to 9:19:3.
* docs/release: Updated.
* src/psaux/psobjs.c (ps_parser_load_field_table): Don't handle
`count_offset' if it is zero (i.e., unused). Otherwise, the first
element of the structure which holds the data is erroneously
modified. Problem reported by Chi Nguyen <chint@necsv.com>.
* builds/unix/configure.raw: Don't call AC_CANONICAL_BUILD and
AC_CANONICAL_TARGET and use $host_os only. A nice explanation for
this change can be found at
http://blog.flameeyes.eu/s/canonical-target.
From Savannah patch #6712.
src/smooth/ftgrays.c, src/base/ftobjc.s, src/sfobjs.c:
s/_Err_Bad_Argument/_Err_Invalid_Argument/. The former is for
errors in the bytecode interpreter only.
extern const FT_Module_Class
(or similar for C++). However, the actual types of the variables
being declared are often different, e.g., FT_Driver_ClassRec or
FT_Renderer_Class. (Some are, indeed, FT_Module_Class.)
This works with most C compilers (since those structs begin with an
FT_Module_Class struct), but technically it's undefined behavior.
To quote the ISO/IEC 9899:TC2 final committee draft, section 6.2.7
paragraph 2:
All declarations that refer to the same object or function shall
have compatible type; otherwise, the behavior is undefined.
(And they are not compatible types.)
Most C compilers don't reject (or even detect!) code which has this
issue, but the GCC LTO development branch compiler does. (It
outputs the types of the objects while generating .o files, along
with a bunch of other information, then compares them when doing the
final link-time code generation pass.)
Patch from Savannah bug #25133.
* src/base/ftinit.c (FT_USE_MODULE): Include variable type.
* builds/amiga/include/freetype/config/ftmodule.h,
include/freetype/config/ftmodule.h, */module.mk: Updated to declare
pass correct types to FT_USE_MODULE.
FT_FACE_FLAG_TRICKY to indicate that the font format's hinting
engine is necessary for correct rendering.
At the same time, slightly modify the behaviour of tricky fonts:
FT_LOAD_NO_HINTING is now ignored. To really force raw loading
of tricky fonts (without hinting), both FT_LOAD_NO_HINTING and
FT_LOAD_NO_AUTOHINT must be used.
Finally, tricky TrueType fonts always use the bytecode interpreter
even if the patented code is used.
* include/freetype/freetype.h (FT_FACE_FLAG_TRICKY, FT_IS_TRICKY):
New macros.
* src/truetype/ttdriver.c (Load_Glyph): Handle new load flags
semantics as described above.
* src/truetype/ttobjs.c (tt_check_trickyness): New function, using
code of ...
(tt_face_init): This function, now simplified and updated to new
semantics.
* src/base/ftobjs.c (FT_Load_Glyph): Don't use autohinter for tricky
fonts.
* docs/CHANGES: Document it.
nor bitmaps can be considered as containing space `glyphs' only.
* src/truetype/ttpload.c (tt_face_load_loca): Handle the case where
a `glyf' table is missing.
* src/truetype/ttgload.c (load_truetype_glyph): Abort if we have no
`glyf' table but a non-zero `loca' entry.
(tt_loader_init): Handle missing `glyf' table.
* src/base/ftobjs.c (FT_Load_Glyph): Undo change 2008-12-05.
* src/sfnt/sfobjs.c (sfnt_load_face): A font with neither outlines
nor bitmaps is scalable.
0x100 instead of 0x10000; the latter value is already occupied by
FT_LOAD_TARGET_LIGHT. Bug reported by James Cloos.
Handle SFNT with neither outlines nor bitmaps. This fixes Savannah
bug #25010.
* src/base/ftobjs.c (FT_Load_Glyph): Reject fonts with neither
outlines nor bitmaps.
* src/sfnt/sfobjs.c (sfnt_load_face): Don't return an error if there
is no table with glyphs.
* src/sfnt/ttload.c (tt_face_lookup_table): Improve debugging
message.
Other minor cosmetics.
code so that memory allocation problems can be distinguished from
missing table entries. Reported by Graham Asher.
(GET_NAME): New macro.
(sfnt_load_face): Use it.
[TT_CONFIG_OPTION_BYTECODE_INTERPRETER]: Undefine
TT_CONFIG_OPTION_UNPATENTED_HINTING. This fixes the return value of
`FT_Get_TrueType_Engine_Type' (and makes it work as documented).
Reported in bug #441638 of bugzilla.novell.com.
* docs/CHANGES: Document it.
Other minor documentation improvements.
fonts (like HELVI.PFB version 003.001, used on OS/2) which define
some `subrs' elements more than once. Problem reported by Peter
Weilbacher <mozilla@weilbacher.org>.
(cff_face_done), src/pfr/pfrobjs.c (pfr_face_done),
src/pcf/pcfdrivr.c (PCF_Face_Done), src/cid/cidobjs.c
(cid_face_done), src/bdf/bdfdrivr. (BDF_Face_Done),
src/sfnt/sfobjs.c (sfnt_face_done): Protect against face == 0.
Reported by Graham Asher.
* include/freetype/internal/t1types.h (CID_FaceRec),
src/type42/t42types.h (T42_FaceRec): Comment out `afm_data'.
* src/smooth/ftgrays.c (gray_raster_render): Don't dereference
`target_map' if FT_RASTER_FLAG_DIRECT is set. Problem reported by
Stephan T. Lavavej <stl@nuwen.net>.
(FT_Outline_Decompose): Decorate with tracing messages.
* src/smooth/ftgrays.c [DEBUG_GRAYS]: Replace with
FT_DEBUG_LEVEL_TRACE.
[_STANDALONE_ && FT_DEBUG_LEVEL_TRACE]: Include stdio.h and
stdarg.h.
(FT_TRACE) [_STANDALONE_]: Remove.
(FT_Message) [_STANDALONE_ && FT_DEBUG_LEVEL_TRACE]: New function.
(FT_TRACE5, FT_TRACE7) [_STANDALONE_]: New macros.
(FT_ERROR) [_STANDALONE_]: Updated.
(gray_hline) [FT_DEBUG_LEVEL_TRACE]: Fix condition.
Use FT_TRACE7.
(gray_dump_cells): Make it `static void'.
(graay_convert_glyph): Use FT_TRACE7.
(FT_Outline_Decompose) [_STANDALONE_]: Synchronize with version in
ftoutln.c.
* src/base/ftadvanc.c (FT_Get_Advance, FT_Get_Advances): Use
FT_ERROR_BASE.
Other minor modifications.
Werner Lemberg