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ChangeLog
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2023-08-25 Werner Lemberg <wl@gnu.org>
* Version 2.13.2 released.
==========================
Tag sources with `VER-2-13-2'.
* docs/VERSION.TXT: Add entry for version 2.13.2.
* docs/CHANGES: Updated.
* docs/release, docs/README, builds/macs/README: Updated.
* README, src/base/ftver.rc, builds/windows/vc2010/index.html,
builds/windows/visualc/index.html, builds/windows/visualce/index.html,
builds/wince/vc2005-ce/index.html, builds/wince/vc2008-ce/index.html,
docs/freetype-config.1: s/2.13.1/2.13.2/, s/2131/2132/.
* include/freetype/freetype.h (FREETYPE_PATCH): Set to 2.
* builds/unix/configure.raw (version_info): Set to 26:1:20.
* CMakeLists.txt (VERSION_PATCH): Set to 2.
2023-08-25 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/base/ftcalc.c (FT_MulAddFix): Simplify 32-bit rounding.
2023-08-25 Werner Lemberg <wl@gnu.org>
Fix clang warnings.
* src/cffload.c (cff_blend_doBlend): Fix type of `sum`.
* src/truetype/ttgxvar.c (tt_var_load_item_variation_store): Fix type of
`word_delta_count`.
2023-08-24 Werner Lemberg <wl@gnu.org>
* subprojects/*.wrap: Updated.
2023-08-24 Hugh McMaster <hugh.mcmaster@outlook.com>
builds/unix/configure.raw: Use variable to specify minimum Python version.
2023-08-24 Alexei Podtelezhnikov <apodtele@gmail.com>
* builds/toplevel.mk: Simplify version extraction.
2023-08-22 Alexei Podtelezhnikov <apodtele@gmail.com>
[base] Improve the matrix degeneracy check.
Also fixes #1251.
* src/base/ftcalc.c (FT_Matrix_Check): To avoid overflow, scale by shifting.
* include/freetype/internal/ftcalc.h (FT_Matrix_Check): Update description.
2023-08-22 Werner Lemberg <wl@gnu.org>
builds/toplevel.mk: Don't use `\#` in functions.
The behaviour changed in GNU make 4.3, where `#` (without the backslash)
would be necessary. Using a variable instead the code works with both older
and newer GNU make versions.
Fixes #1252.
2023-08-19 Hugh McMaster <hugh.mcmaster@outlook.com>
builds/freetype.mk: Invoke `mkdocs` as a Python module
FreeType's `refdoc` target currently allows users to override the
default Python path, which is useful for testing and development.
In contrast, `mkdocs` is invoked via the default Python path.
Invoking `mkdocs` via Python's module syntax allows for greater
flexibility, although there is no change for the default use case.
2023-08-17 Ben Wagner <bungeman@chromium.org>
[base] Avoid UB with memcpy
`FT_NEW_ARRAY(p, 0)` sets `p` to `NULL`. `FT_Stream_ReadAt` with a
memory based stream uses `FT_MEM_COPY` which is `memcpy` which specifies
that it is undefined behavior for either the `src` or `dst` to be
`NULL`. Instead of forcing all callers work around calling
`FT_Stream_Read` when `buffer == NULL && count == 0` do the check in
`FT_StreamRead`. This allows any call with `count == 0` to succesfully
read zero bytes without UB.
* src/base/ftstream.c (FT_Stream_ReadAt): skip `FT_MEM_COPY` when
`count == 0`. (FT_Stream_TryRead): ditto
Fixes: #1250
2023-08-12 Werner Lemberg <wl@gnu.org>
Fix warnings in tracing messages for 32bit compilation.
Since we now require C99, use `%td` for `ptrdiff_t` and `%zu` for `size_t`.
2023-08-04 Ben Wagner <bungeman@chromium.org>
Avoid overflow in COLR bounds checks.
The values read into `base_glyphs_offset_v1` and `layer_offset_v1` may
be in the range 0xFFFFFFFD-0xFFFFFFFF. On systems where `unsigned long`
is 32 bits adding 4 to such values will wrap and pass bounds checks but
accessing values at such offsets will be out of bounds.
On the other hand `table_size` has already been tested to be at least
`COLRV1_HEADER_SIZE` (34) so it is safe to subtract 4 from it.
* src/sfnt/ttcolr.c (tt_face_load_colr): subtract 4 from `table_size`
instead of adding 4 to font data offsets in bounds checks
Fixes: https://crbug.com/1469348
2023-08-02 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/base/ftobjs.c (open_face_from_buffer): Silence `maybe-uninitialized`.
We never call this function without a `driver_name` (#1245).
2023-07-29 Alexei Podtelezhnikov <apodtele@gmail.com>
[truetype] Reduce v40 footprint.
* src/truetype/ttgload.c (TT_HInt_Glyph, tt_loader_set_pp,
tt_loader_init): Refactor code.
2023-07-27 Alexei Podtelezhnikov <apodtele@gmail.com>
[truetype] Remove Infinality for good (remaining bits).
* src/truetype/ttobjs.h: Remove remaining fields.
* src/truetype/ttinterp.c: Do not initialize them.
* include/freetype/internal/tttypes.h: Remove descriptions.
2023-07-27 Alexei Podtelezhnikov <apodtele@gmail.com>
[truetype] Remove Infinality for good.
Remove everything `#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY`,
which was undefined for a while now.
* include/freetype/internal/tttypes.h: Ditto.
* src/truetype/truetype.c: Ditto.
* src/truetype/ttdriver.c: Ditto.
* src/truetype/ttgload.c: Ditto.
* src/truetype/ttinterp.c: Ditto.
* src/truetype/ttinterp.h: Ditto.
* src/truetype/ttobjs.c: Ditto.
* src/truetype/ttsubpix.[ch]: Remove files.
* src/truetype/rules.mk: Don't mention "ttsubpix.c".
2023-07-21 Jouk Jansen <joukj@hrem.nano.tudelft.nl>
* vms_make.com: Provide separate library compiled with C++.
Some types on OpenVMS x86_64 (for example, `long') have different sizes
depending on whether compiled with either C or C++. In particular,
X-Windows applications crash if linked with the C++ version.
This patch makes `vms_make.com` create a second version of the FreeType
library compiled with C++ if OpenVMS is running on the x86_64 platform.
2023-07-21 Jouk Jansen <joukj@hrem.nano.tudelft.nl>
* vms_make.com: Fix typos.
2023-07-21 Jouk Jansen <joukj@hrem.nano.tudelft.nl>
* src/smooth/ftgrays.c (FT_SSE2): Fix definition for VMS.
2023-07-19 Jouk Jansen <joukj@hrem.nano.tudelft.nl>
vms_make.com: Make use of additional libraries optional.
Check whether `.olb` files are present.
Also check for the HarfBuzz library.
2023-07-19 Jouk Jansen <joukj@hrem.nano.tudelft.nl>
vms_make.com: Add `/warn=noinfo` to `CFLAGS`.
This reduces enormously the informationals while compiling on x86_64 (i.e.,
which `.h` file is inluded form where).
2023-07-18 Ben Wagner <bungeman@chromium.org>
[woff2] Clean up on large brotli expansion
* src/sfnt/sfwoff2.c (woff2_open_font): set error and goto cleanup
Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=60711
2023-07-16 Werner Lemberg <wl@gnu.org>
[woff2] Avoid allocation bomb.
This is a fix for commit 85167dbd5, reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=60615
* src/sfnt/sfwoff2.c (MAX_SFNT_SIZE): New macro.
(woff2_open_font): Use it to limit the maximum size of an uncompressed WOFF2
font.
2023-07-14 Werner Lemberg <wl@gnu.org>
[cff] Fix compiler warning.
* src/cff/cffparse.c, src/cff/cffparse.h: Make `cff_parse_fixed` a local
function.
2023-07-14 Ben Wagner <bungeman@chromium.org>
[woff2] Remove sfnt size guess check
In WOFF the `totalSfntSize` must be correct, however in WOFF2 this value
is now just a hint and a conforming implementation must not reject
otherwise valid data if the `totalSfntSize` turns out not to be exact.
* src/sfnt/sfwoff2.c (woff2_open_font): remove check that uncompressed
woff2 data would fit in the sfnt size guess.
Fixes: #1235
2023-07-14 Skef Iterum <github@skef.org>
[cff] Make blend operator work with floats in private dicts.
The CFF2 blend operator takes N default values and corresponding
sets of deltas and pushes N values specific to a designspace
location. CFF has a floating point numeric type and the FreeType
blending code was not converting those into its internal 16.16
Fixed type format.
Fixes #1243.
* src/cff/cffparse.c (do_fixed): Handle floating point numbers.
Also fix scaling overflow check for integer-to-fixed conversion.
* src/cff/cffload.c (cff_blend_doBlend): Updated.
2023-07-08 Hin-Tak Leung <htl10@users.sourceforge.net>
* src/truetype/ttgload.c (TT_Hint_Glyph): More mostly cosmetic update.
This is a follow-up to commit 49c74ac02, which creates a new local variable
"exec = loader->exec", and shortening a lot of "loader->exec". This commit
does two more such changes missed in that first commit.
2023-07-06 Hugh McMaster <hugh.mcmaster@outlook.com>
[gzip] Don't compile internal zlib development files when using system zlib.
`src/gzip/rules.mk` compiles the internal zlib sources even when using the
zlib development files provided by a host system. If the internal zlib
development files are not present, FreeType fails to build from source.
This patch ensures the internal zlib development files are only
prerequisites when not using zlib development files on a host system.
* src/gzip/rules.mk (GZIP_DRV_SRCS): Define conditionally.
2023-06-24 Werner Lemberg <wl@gnu.org>
* Version 2.13.1 released.
==========================
Tag sources with `VER-2-13-1'.
* docs/VERSION.TXT: Add entry for version 2.13.1.
* docs/CHANGES: Updated.
* docs/release, docs/README, builds/macs/README: Updated.
* README, src/base/ftver.rc, builds/windows/vc2010/index.html,
builds/windows/visualc/index.html, builds/windows/visualce/index.html,
builds/wince/vc2005-ce/index.html, builds/wince/vc2008-ce/index.html,
docs/freetype-config.1: s/2.13.0/2.13/1/, s/2130/2131/.
* include/freetype/freetype.h (FREETYPE_PATCH): Set to 1.
* builds/unix/configure.raw (version_info): Set to 26:0:20.
* CMakeLists.txt (VERSION_PATCH): Set to 1.
* subprojects/libpng.wrap, subprojects/zlib.wrap, subprojects/dlg: Updated.
2023-06-09 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
Comment fixes.
2023-06-09 Werner Lemberg <wl@gnu.org>
[sdf] Correct handling of empty glyphs.
This is a refinement of commit 7b3ebb9.
* src/sdf/ftsdfrend.c (ft_sdf_render): Goto 'Exit' instead of directly
returning.
(fd_bsdf_render): Ditto, also taking care of setting `FT_GLYPH_OWN_BITMAP`
correctly.
2023-06-05 Ben Wagner <bungeman@chromium.org>
Mark FT_Renderer_Class::raster_class as pointer to const
The `FT_DEFINE_RASTER_FUNCS` macro declares a `const FT_Raster_Funcs`.
The address of the definition is taken and assigned to
`FT_Renderer_Class::raster_class` which is currently `FT_Raster_Funcs*`.
Until recently the `const` was cast away and with the removal of the
cast there are now warnings about dropping this `const`. Instead of
adding back the casts, make `FT_Renderer_Class::raster_class` a pointer
to const, as is done with pointers in other interfaces.
* include/freetype/ftrender.h (FT_Renderer_Class_): mark `raster_class`
as const.
2023-06-03 Ben Wagner <bungeman@chromium.org>
Fix some `FT_Fixed` vs. `FT_Long` confusion.
`FT_Fixed` and `FT_Long` are both typedef'ed to be `signed long`. However,
`FT_Fixed` implies that the lower 16 bits are being used to express
fractional values and so these two types should not be confused.
* include/freetype/internal/services/svmm.h (FT_Set_MM_Blend_Func): Use
`FT_Fixed` for `coords`. Users are passing `FT_Fixed` and implementations
are taking `FT_Fixed`.
(FT_Get_MM_Blend_Func): Ditto.
* src/autofit/afcjk.c (af_cjk_metrics_check_digits): Use `FT_Long` for
`advance` and `old_advance`. `advance`'s address is passed as `FT_Long*` to
`af_shaper_get_elem`, which writes the advance in em units (not fixed). The
exact value is not important here as it is only compared to check whether it
has changed.
* src/autofit/aflatin.c (af_latin_metrics_check_digits): Ditto.
2023-06-03 Ben Wagner <bungeman@chromium.org>
*/*: Remove many function pointer casts.
In C it is undefined behavior to call a function through a function pointer
of a different type. This is now detected by the Control Flow Integrity
Sanitizer. All known issues have already been fixed. Prevent any
accidental re-introduction by removing function pointer casts when defining
services. The services will call the service functions through the function
pointers on the service. As a result the functions must have the same type
so there should be no need to cast. Removing the casts allows compilers to
warn about assignment to an incompatible function pointer type.
2023-06-03 Werner Lemberg <wl@gnu.org>
Minor formatting.
2023-05-23 Werner Lemberg <wl@gnu.org>
Replace `sprintf` with `snprintf`.
Fixes #1233.
* include/freetype/config/ftstdlib.h (ft_sprintf): Replace with...
(ft_snprintf): This new macro.
* src/autofit/afhints.c (af_print_idx): Add argument to pass the buffer
size.
(af_glyph_hints_dump_points, af_glyph_hints_dump_segments,
af_glyph_hints_dump_edges): Updated.
* src/bdf/bdflib.c (BUFSIZE): New macro.
(bdf_parse_properties_, bdf_parse_start_): Use `ft_snprintf`.
* src/tools/ftrandom/ftrandom.c (do_test): Use `snprintf`.
2023-05-23 Werner Lemberg <wl@gnu.org>
docs/DEBUG: Formatting.
2023-05-20 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[doc] Type1 GX (sfnt-wrapped Type1) is not supported.
* docs/formats.txt: Clarify the reference of Type1 GX,
and state that this format is not supported. This
is because the content `TYP1' table is not exactly same
with the Type1 font format specification; no eexec
encryption is used. For detail and concrete examples,
see the analysis on:
https://gitlab.freedesktop.org/freetype/freetype/-/issues/1231
2023-05-19 Craig White <gerzytet@gmail.com>
Add missing end quote of a string in the example code of FT_Trace_Set_Level
2023-05-19 Seigo Nonaka <nona@google.com>
[truetype] Reduce heap allocation of `deltaSet` variation data.
`deltaSet` is an array of packed integers that can be 32 bits, 16 bits, or
8 bits. Before this change, these values were unpacked to 32-bit integers.
However, this can cause big heap allocations, e.g., around 500 KByte for
'NotoSansCJK'. To reduce this amount, store the packed integers and unpack
them just before passing to the calculation. At calculation time, due to
the variable length of region indices, temporary heap allocations are
necessary. This heap allocation is not negligible and visible in `ftbench`
results. So, use stack-allocated arrays for short array calculations.
Fixes #1230.
* include/freetype/internal/ftmmtypes.h (GX_ItemVarDataRec): New fields
`wordDeltaCount` and `longWords`.
* src/truetype/ttgxvar.c (tt_var_load_item_variation_store): Load packed
data.
(tt_var_get_item_delta): Unpack data before applying.
2023-05-17 Jouk Jansen <joukj@hrem.nano.tudelft.nl>
vms_make.com: Create shared executable for x86 version of OpenVMS.
2023-05-15 Werner Lemberg <wl@gnu.org>
Add new load flag `FT_LOAD_NO_SVG`.
Modern color fonts often contain both an 'SVG' and 'COLR' table. FreeType
always preferred 'SVG' over 'COLR' (this was a design decision), however,
this might not be the right choice for the user. The new flags makes
FreeType ignore the 'SVG' table while loading a glyph.
Fixes #1229.
* include/freetype/freetype.h (FT_LOAD_NO_SVG): New macro.
* src/base/ftobjs.c (FT_Load_Glyph), src/cff/cffgload.c (cff_slot_load),
src/truetype/ttgload.c (TT_Load_Glyph): Use it.
2023-05-13 Werner Lemberg <wl@gnu.org>
.mailmap: Updated.
2023-05-13 Alexei Podtelezhnikov <apodtele@gmail.com>
[cache] Merge functions.
* src/cache/ftccache.c (FTC_Cache_Init): Merge into...
(ftc_cache_done): ... this function, with unnecessary checks removed.
2023-05-13 Alexei Podtelezhnikov <apodtele@gmail.com>
[cache] Minor casting and cosmetic updates.
* src/cache/ftcglyph.c (ftc_gcache_{init,done}): Remove casting.
(FTC_GCache_Lookup): Cosmetic variable renaming.
* src/cache/ftcsbits.c (ftc_snode_compare): Formatting.
2023-05-12 Werner Lemberg <wl@gnu.org>
* include/freetype/ftcache.h: Typo, punctuation.
2023-05-12 Alexei Podtelezhnikov <apodtele@gmail.com>
* include/freetype/ftcache.h: Formatted and updated.
2023-05-12 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
* include/freetype/internal/t1types.h: Fix the indentation.
2023-05-11 Alexei Podtelezhnikov <apodtele@gmail.com>
[cache] Revise the dynamic hash table accounting.
Instead of counting entries relative to the middle of the hash table,
this switches to the absolute counter with the full index range mask.
As a result, some calculations become a bit simpler. The cache resizing
logic stays largely the same.
* src/cache/ftccache.h (FTC_NODE_TOP_FOR_HASH): Revised with new counter.
* src/cache/ftccache.c (ftc_get_top_node_for_hash): Ditto.
(ftc_cache_resize): Simplify reallocations and stop their zeroing.
(ftc_cache_init): Stop over-allocating but keep zeroing initially.
(FTC_Cache_Clear, FTC_Cache_RemoveFaceID): Updated accordingly.
2023-05-11 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[t1cid] Set FT_FACE_FLAG_CID_KEYED.
* cidobjs.c (cid_face_init): Set FT_FACE_FLAG_CID_KEYED.
* cidriver.c (cid_get_is_cid): Comment about the case that
is_cid cannot guarantee the glyph collection specification.
2023-05-09 Jouk Jansen <joukj@hrem.nano.tudelft.nl>
* src/smooth/ftgrays.c (FT_SSE2): Don't define for VMS.
2023-05-08 Werner Lemberg <wl@gnu.org>
* src/cff/cffdrivr.c (cff_glyph_load): Fix guard for `size`.
This was forgotten to change in commit 2b54eba36b (in May 2004).
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58739
2023-05-08 Werner Lemberg <wl@gnu.org>
Minor compiler warning fixes.
* src/autofit/afcjk.c (af_cjk_get_standard_widths), src/autofit/aflatin.c
(af_latin_get_standard_widths): Use `FT_CALLBACK_DEF`.
* src/cff/cffparse.c (cff_parser_run): Initialize and fix allocation of `q`.
2023-05-08 Werner Lemberg <wl@gnu.org>
* src/psaux/t1cmap.c: Signature fixes.
2023-05-08 Werner Lemberg <wl@gnu.org>
* src/bzip2/ftbzip2.c: Signature fixes.
2023-05-08 Werner Lemberg <wl@gnu.org>
[cache] Signature fixes.
* src/cache/ftcglyph.c, src/cache/ftcglyph.h (FTC_GNode_Compare): Remove
redundant function. It is equivalent to `ftc_gnode_compare` and becomes
completely meaningless with fixed signatures.
Update all callers.
* src/cache/ftcsbits.c, src/cache/ftcsbits.h (FTC_SNode_Compare): Remove
redundant function. It is equivalent to `ftc_snode_compare` and becomes
completely meaningless with fixed signatures.
Update all callers.
2023-05-07 Werner Lemberg <wl@gnu.org>
[sdf] Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/svg/ftsvg.c: Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
[raster] Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
[smooth] Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
[pshinter] Signature fixes.
* src/pshinter/pshrec.c (t1_hints_close, t1_hints_apply): New wrapper
functions.
(t1_hints_funcs_init): Use them.
(t2_hints_close, t2_hints_apply): New wrapper functions.
(t2_hints_funcs_init): Use them.
2023-05-07 Werner Lemberg <wl@gnu.org>
[autofit] Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/sfnt/ttcmap: Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/pcf/pcfdrivr.c: Signature fix.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/winfonts/winfnt.c: Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/type42/t42parse.c: Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
[pfr] Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/cid/cidload.c: Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/cff/cffcmap.c: Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/type1/t1load.c: Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
[truetype] Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
[base] Signature fixes.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/type42/t42drivr.c: Clean up interface.
Ensure that all driver functions use the signature of the service or driver.
This avoids pointer mismatches, which are technically undefined behaviour.
Recent compilers are more picky in catching them as part of Control Flow
Integrity tests.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/type1/*: Clean up interface.
Ensure that all driver functions use the signature of the service or driver.
This avoids pointer mismatches, which are technically undefined behaviour.
Recent compilers are more picky in catching them as part of Control Flow
Integrity tests.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/truetype/*: Clean up interface.
Ensure that all driver functions use the signature of the service or driver.
This avoids pointer mismatches, which are technically undefined behaviour.
Recent compilers are more picky in catching them as part of Control Flow
Integrity tests.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/sfnt/sfdriver.c, src/sfnt/ttbdf.c: Clean up interface.
Ensure that all driver functions use the signature of the service or driver.
This avoids pointer mismatches, which are technically undefined behaviour.
Recent compilers are more picky in catching them as part of Control Flow
Integrity tests.
* src/sfnt/sfdriver.c (sfnt_load_table): New wrapper function.
(sfnt_service_sfnt_table): Use it.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/psnames/psmodule.c: Use `FT_CALLBACK_DEF`.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/pfr/pfrdrivr.c: face -> pfrface, pfrface -> face.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/pcf/pcfdrivr.c: Clean up interface.
Ensure that all driver functions use the signature of the service or driver.
This avoids pointer mismatches, which are technically undefined behaviour.
Recent compilers are more picky in catching them as part of Control Flow
Integrity tests.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/cid/cidriver.c: Clean up interface.
Ensure that all driver functions use the signature of the service or driver.
This avoids pointer mismatches, which are technically undefined behaviour.
Recent compilers are more picky in catching them as part of Control Flow
Integrity tests.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/bdf/bdfdrivr.c: Clean up interface.
Ensure that all driver functions use the signature of the service or driver.
This avoids pointer mismatches, which are technically undefined behaviour.
Recent compilers are more picky in catching them as part of Control Flow
Integrity tests.
2023-05-07 Werner Lemberg <wl@gnu.org>
* src/cff/*: Clean up interface.
Ensure that all driver functions use the signature of the service or driver.
This avoids pointer mismatches, which are technically undefined behaviour.
Recent compilers are more picky in catching them as part of Control Flow
Integrity tests.
2023-05-06 Werner Lemberg <wl@gnu.org>
[truetype] Fix style name handling for variation fonts.
* include/freetype/internal/tttypes.h (TT_FaceRec): New field
`non_var_style_name`.
* src/sfnt/sfobjs.c (sfnt_load_face): Initialize `non_var_style_name`.
(sfnt_done_face): Free `non_var_style_name`.
* src/truetype/ttgxvar.c (TT_Set_Named_Instance): Restore non-VF style name
if switching back to non-VF mode.
2023-05-06 Werner Lemberg <wl@gnu.org>
[truetype] Fix PostScript name handling for variation fonts.
A variation font's PostScript name of a named instance is usually different
from the PostScript name of an unnamed instance. However, if a change
between a named instance and an unnamed instance with exactly the same
design axis values happened, it was possible that the PostScript name wasn't
correctly updated.
This commit reorganizes the code to handle this issue within the top-level
API functions, using a new service to trigger recomputation of the
PostScript name.
* include/freetype/internal/services/svmm.h (FT_Construct_PS_Name_Func): New
typedef.
(FT_Service_MultiMasters): New field `construct_ps_name`.
(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.
* src/base/ftmm.c (FT_Set_Var_Design_Coordinates,
FT_Set_MM_Blend_Coordinates, FT_Set_Var_Blend_Coordinates): Call
`mm->construct_ps_name` to handle `postscript_name`.
(FT_Set_Named_Instance): Call `mm->construct_ps_name` to handle
`postscript_name`.
Use shortcut.
* src/cff/cffdrivr.c (cff_construct_ps_name): New function.
(cff_service_multi_masters): Updated.
* src/truetype/ttgxvar.c (tt_set_mm_blend): Don't handle `postscript_name`.
(TT_Set_MM_Blend): Simplify.
(TT_Set_Named_Instance): Return -1 if axis values haven't changed.
Don't set `face_index`.
(tt_construct_ps_name): New function.
* src/truetype/ttgxvar.h: Updated.
* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.
* src/type1/t1driver.c (t1_service_multi_masters): Updated.
* src/type1/t1load.c (T1_Set_MM_Blend): Simplify.
2023-05-06 Werner Lemberg <wl@gnu.org>
* include/freetype/internal/services/svmm.h: Minor changes.
2023-05-06 Werner Lemberg <wl@gnu.org>
[truetype] Fix deactivation of variation font handling.
According to the documentation, the functions `FT_Set_Named_Instance`,
`FT_Set_MM_Design_Coordinates`, `FT_Set_Var_Design_Coordinates`, and
`FT_Set_Var_Blend_Coordinates` can unset the `FT_FACE_FLAG_VARIATION` flag.
(The same is true for `FT_Set_MM_WeightVector` but this information was
accidentally omitted from the documentation.)
However, if a call of these functions didn't change the axis values this
could fail because internal shortcuts exited too early.
This commit reorganizes the code to handle `FT_FACE_FLAG_VARIATION` in the
top-level API functions, also taking care of the issue at hand.
* src/base/ftmm.c (FT_Set_MM_Design_Coordinates, FT_Set_MM_WeightVector,
FT_Set_Var_Design_Coordinates, FT_Set_MM_Blend_Coordinates,
FT_Set_Var_Blend_Coordinates): Handle `FT_FACE_FLAG_VARIATION`.
* src/truetype/ttgxvar.c (TT_Set_MM_Blend, TT_Set_Var_Design,
TT_Set_Named_Instance) Don't handle `FT_FACE_FLAG_VARIATION`.
* src/type1/t1load.c (T1_Set_MM_Blend, T1_Set_MM_WeightVector,
T1_Set_MM_Design): Ditto.
* src/cff/cffobjs.c (cff_face_init): Use `FT_Set_Named_Instance` instead of
low-level functions.
* src/truetype/ttobjs.c (tt_face_init): Ditto.
2023-05-06 Werner Lemberg <wl@gnu.org>
s/set_instance/set_named_instance/
* include/freetype/internal/services/svmm.h (FT_Set_Instance_Func): Renamed
to...
(FT_Set_Named_Instance_Func): ...this.
(FT_Service_MultiMasters): Rename `set_instance` to `set_named_instance`.
(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.
* src/base/ftmm.c (FT_Set_Named_Instance): Updated.
* src/cff/cffdrivr.c (cff_set_instance): Renamed to...
(cff_set_named_instance): ...this.
(cff_service_multi_masters): Updated.
* src/cff/cffobjs.c (cff_face_init): Updated.
* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.
* src/type1/t1driver.c (t1_service_multi_masters): Updated.
2023-05-06 Werner Lemberg <wl@gnu.org>
New Variation Font function `FT_Get_Default_Named_Instance`.
* include/freetype/ftmm.h, src/base/ftmm.c (FT_Get_Default_Named_Instance):
New function.
* include/freetype/internal/services/svmm.h
(FT_Get_Default_Named_Instance_Func): New typedef.
(FT_Service_MultiMasters): New field `get_default_named_instance`.
(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.
* include/freetype/internal/tttypes.h (TT_Face): New field
`var_default_named_instance`.
* src/sfnt/sfobjc.s (sfnt_init_face): Initialize
`var_default_named_instance`.
* src/cff/cffdrivr.c (cff_get_default_named_instance): New function.
(cff_service_multi_masters): Updated.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Initialize
`var_default_named_instance`.
(TT_Get_Default_Named_Instance): New function.
* src/truetype/ttgxvar.h: Updated.
* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.
* src/type1/t1driver.c (t1_service_multi_masters): Updated.
* docs/CHANGES: Updated.
2023-05-06 Werner Lemberg <wl@gnu.org>
[cid] Improve tracing messages; formatting.
2023-05-04 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/cache/ftccache.c (ftc_node_hash_unlink): Minor.
2023-05-04 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/cache/ftcmru.c (FTC_MruList_RemoveSelection): Purge backwards.
2023-05-04 Alexei Podtelezhnikov <apodtele@gmail.com>
[cache] Revise list cleansing.
* src/cache/ftcmru.c (FTC_MruList_RemoveSelection): Use one loop to
do it.
* src/cache/ftcmanag.c (FTC_Manager_Compress, FTC_Manager_FlushN):
Streamline loops.
2023-05-03 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[t1cid] Improve cid_get_cid_from_glyph_index().
Update cid_get_cid_from_glyph_index() to
return an error and CID=0 in the case that
the specified glyph index points to an invalid
entry.
cidgload.h (cid_compute_fd_and_offsets):
Declare new helper function to set the
fd_select and 2 offsets to access the glyph
description data.
cidgload.c (cid_compute_fd_and_offsets):
Move the part loading fd_select and 2 offsets
from cid_load_glyph() to here. If the loaded
parameters are broken, return the Invalid_Offset
error. This function does not load the glyph
data, only fills these parameters.
(cid_load_glyph): Use new helper function in above.
cidriver.c (cid_get_cid_from_glyph_index):
Check whether the requested glyph index points
to a valid entry, by calling cid_compute_fd_and_offsets().
If it is valid, fill the cid by the glyph
index (=CID). If it is invalid, return an
error and fill the cid by 0.
2023-04-30 Werner Lemberg <wl@gnu.org>
API documentation: Re-organize chapters and sections
* Split the very long 'Base Interface' section into smaller sections.
* Split the 'Core API' chapter into two chapters.
* Remove single enumeration values from `@order` fields since they have no
effect.
2023-04-29 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/sfnt/pngshim.c (Load_SBit_Png): Remove FALL_THROUGH warning.
2023-04-28 Werner Lemberg <wl@gnu.org>
* src/sfnt/ttload.c (tt_face_load_font_dir): Add another guard.
Reject 'OTTO' fonts with no valid tables.
2023-04-28 Werner Lemberg <wl@gnu.org>
* src/cff/cffdrivr/c (cff_get_ps_name): Avoid unnecessary crash.
The situation can happen if `FT_New_Face` (or one of its siblings) is called
with a negative index to get the number of contained faces, followed
immediately by a call to `FT_Get_Postscript_Name`. While this is not a valid
use of the FreeType library there is no need for a crash.
Fixes #1219.
2023-04-28 Werner Lemberg <wl@gnu.org>
* src/cff/cffdrivr.c (cff_ps_get_font_info): Reject 'CFF2' format.
2023-04-28 Werner Lemberg <wl@gnu.org>
* src/cid/cidgload.c (cid_load_glyph): Fix compiler warnings.
2023-04-28 Werner Lemberg <wl@gnu.org>
Minor documentation updates.
2023-04-27 Werner Lemberg <wl@gnu.org>
* src/ttgxvar.c: Minor changes.
(TT_Get_MM_Var): Improve tracing messages.
(tt_set_mm_blend): Minor speed-up.
2023-04-27 Werner Lemberg <wl@gnu.org>
s/this is,/that is,/
2023-04-27 Alexei Podtelezhnikov <apodtele@gmail.com>
[bdf] Clean up the atom property parsing.
* src/bdflib.c (bdf_is_atom_): Refactor code with fewer checks.
(bdf_list_join_): Return NULL.
(bdf_add_comment_): Use const argument.
(bdf_get_property): Ditto, ditto, make the function static.
* src/bdf.h (bdf_get_property): Remove prototype.
2023-04-25 Werner Lemberg <wl@gnu.org>
Improve/add source comments and documentation.
2023-04-25 Werner Lemberg <wl@gnu.org>
[sfnt] Fix handling of PS names for Variation Fonts.
* src/sfnt/sfdriver.c (get_win_string, get_apple_string): Continue
construction of string if an invalid character is encountered.
Fixes #1218.
2023-04-24 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[t1cid] Change the trace messages of the charstrings retrieval errors.
The t1cid driver catches 3 types of errors in
the charstrings retrieval;
A) The invalid FD number, there are 2 subtypes;
A-1) FD number is the maximum number fitting to FDBytes.
A-2) FD number is greater than num_dicts.
B) Declared length is overrunning.
C) Declared length is invalid (its end is before its head).
Considering that some widely distributed fonts
(e.g., "CJKV" book by O'Reilly) have A-1 errors
in the unimplemented glyphs, the trace level for
A-1 is calmed to level 1.
The errors A-2, B, and C would be irregular;
their trace levels are kept at level 0, but
the updated trace messages include the CID number.
2023-04-24 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[truetype] Fix `make multi'.
* src/truetype/ttgxvar.c: Include freetype/internal/services/svmetric.h
for the FT_Service_MetricsVariations type definition.
2023-04-19 Ben Wagner <bungeman@chromium.org>
[services] FT_Size_Reset_Func to return FT_Error
The `MetricsVariations` `FT_Size_Reset_Func` is currently defined to
return `void`, but the implementations return `FT_Error`. Even though
the pointers passed will be the same at runtime, calling a function
through a pointer of a different type from the original function pointer
type is undefined behavior. This may be caught at runtime by Control
Flow Integrity with something like clang's `cfi-icall`.