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ChangeLog
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2023-02-09 Werner Lemberg <wl@gnu.org>
* Version 2.13 released.
==========================
Tag sources with `VER-2-13-0'.
* docs/VERSION.TXT: Add entry for version 2.13.
* docs/CHANGES: 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/2.12.1/2.13/, s/2121/2130/.
* include/freetype/freetype.h (FREETYPE_MINOR): Set to 13.
(FREETYPE_PATCH): Set to 0.
* builds/unix/configure.raw (version_info): Set to 25:0:19.
* CMakeLists.txt (VERSION_MINOR): Set to 13.
(VERSION_PATCH): Set to 0.
2023-02-09 Alexei Podtelezhnikov <apodtele@gmail.com>
Comment on `FT_GlyphSlot_Slant'.
2023-02-08 Werner Lemberg <wl@gnu.org>
[autofit] Fix 'multi' compilation.
* src/autofit/ft-hb.c: Decorate with `FT_LOCAL_DEF`.
Add ANSI boilerplate code for otherwise empty file.
* src/autofit/ft-hb.h: Include `compiler-macros.h` and `freetype.h`.
Use `FT_BEGIN_HEADER` and `FT_END_HEADER`.
Decorate with `FT_LOCAL`.
* src/autofit/rules.mk (AUTOF_DRV_SRC): Add `ft-hb.c`.
2023-02-08 Werner Lemberg <wl@gnu.org>
Fix `FT_LOCAL` and `FT_LOCAL_DEF` tags.
2023-02-08 Werner Lemberg <wl@gnu.org>
Fix 'fall-through' warning messages.
Modern compilers get more insistent on that...
* include/freetype/internal/compiler-macros.h (FALL_THROUGH): Define.
* src/*: Use it instead of `/* fall through */` comments.
2023-02-08 Werner Lemberg <wl@gnu.org>
For debugging, avoid implicit conversion from integer to double.
Otherwise we get zillions of clang 15 warnings.
* src/autofit/afcjk.c, src/autofit/afhints.c, src/autofit/aflatin.c,
src/base/ftobjs.c, src/base/ftoutln.c, src/cff/cffparse.c,
src/raster/ftraster.c, src/sfnt/pngshim.c, src/truetype/ttgload.c,
src/truetype/ttgxvar.c, src/truetype/ttobjs.c, src/type1/t1gload.c: Use
`double` cast in debugging and tracing macros.
2023-02-08 Werner Lemberg <wl@gnu.org>
Avoid reserved identifiers that are globally defined.
This is mandated by the C99 standard, and clang 15 produces zillions of
warnings otherwise.
* devel/ftoption.h, include/freetype/config/ftoption.h,
include/freetype/internal/ftmemory.h, src/autofit/afhints.h,
src/autofit/afmodule.c, src/autofit/aftypes.h, src/base/ftadvanc.c,
src/base/ftdbgmem.c, src/base/ftstream.c, src/bdf/bdflib.c,
src/truetype/ttinterp.c: Replace identifiers of the form `_foo` with `foo_`.
2023-02-08 Werner Lemberg <wl@gnu.org>
Fix minor clang and clang++ warnings.
2023-02-08 Alexei Podtelezhnikov <apodtele@gmail.com>
[truetype, type1] Additional variation tags.
Sync with
https://learn.microsoft.com/en-us/typography/opentype/spec/dvaraxisreg#registered-axis-tags
* src/truetype/ttgxvar.h (TTAG_ital): New tag.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Use it.
* src/type1/t1load.c (T1_Get_MM_Var): Handle 'slnt' and 'ital'.
2023-02-08 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/base/ftsynth.c (FT_GlyphSlot_Slant): Add vertical slant.
* include/freetype/ftsynth.h (FT_GlyphSlot_Slant): Update it.
2023-02-08 anuj <95867901+anuj99@users.noreply.github.com>
[sdf] Use 32-bit integers internally.
* src/sdf/ftsdfcommon.h (FT_16D16, FT_26D6): Use 32-bit integers
instead of `FT_Fixed` for internal data types. `FT_Fixed` i.e.
`signed long` is 64-bit on some architectures.
2023-02-07 Werner Lemberg <wl@gnu.org>
docs/CHANGES: Updated.
2023-02-04 Alexei Podtelezhnikov <apodtele@gmail.com>
Comment on optional ascender and descender.
2023-02-04 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/type1/t1afm.c (T1_Read_Metrics): Reaffirm ascender and descender.
2023-02-04 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/type1/t1afm.c (T1_Read_Metrics): Validate ascender and descender.
The ascender and descender are optional in the AFM specifications.
They could be omitted or even set to zero, e.g., in the current release
of URW++ base 35 fonts.
2023-02-02 Werner Lemberg <wl@gnu.org>
* src/cff/cffgload.c (cff_slot_load): Avoid memory leak.
Fixes issue #1204.
2023-02-01 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (tt_var_get_item_delta): Check `face->blend`.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=55581
2023-02-01 Werner Lemberg <wl@gnu.org>
* docs/CHANGES: Add news for 'freetype-demos'.
2023-01-30 Werner Lemberg <wl@gnu.org>
* subprojects/harfbuzz.wrap, subprojects/libpng.wrap: Updated.
2023-01-28 Werner Lemberg <wl@gnu.org>
Minor changes.
Comment fixes, typos, removing of unnecessary parentheses.
2023-01-28 Werner Lemberg <wl@gnu.org>
Whitespace.
2023-01-27 Behdad Esfahbod <behdad@behdad.org>
[ttgxvar] Fix crash in COLRv1.
This is a stopgap until issue #1202 is properly fixed.
* src/truetype/ttxgvar.c (tt_var_get_item_delta): Check `normalizedcoords`.
2023-01-19 Werner Lemberg <wl@gnu.org>
The 'COLR' v1 API will no longer be experimental in the next release.
2023-01-18 Alexei Podtelezhnikov <apodtele@gmail.com>
* docs/oldlogs/ChangeLog.210: Typos.
2023-01-18 Ben Wagner <bungeman@chromium.org>
[base] Fix typo.
* src/base/ftobjs.c (open_face_PS_from_sfnt_stream): Request module 't1cid',
not 'cid'.
2023-01-18 Ben Wagner <bungeman@chromium.org>
[base] Return error if requested driver is not found.
In `open_face_from_buffer` it is possible that a driver is requested but
FreeType was built without the requested module. Return an error in this
case to indicate that the request could not be satisfied, rather than trying
all existing driver modules.
* src/base/ftobjs.c (open_face_from_buffer): Return `FT_Err_Missing_Module`
if a driver is specified but not found.
2023-01-18 Dominik Röttsches <drott@chromium.org>
[sfnt] Avoid nullptr dereference in reading malformed 'COLR' v1 table.
Fixes https://bugs.chromium.org/p/chromium/issues/detail?id=1408044.
* src/sfnt/ttcolr.c (tt_face_load_colr): When the 'COLR' v1 table header is
too small, don't deallocate delta set index map structures.
2023-01-17 Werner Lemberg <wl@gnu.org>
* src/tools/update-copyright: Allow execution from other repositories.
We use this for `freetype-demos`.
2023-01-17 Werner Lemberg <wl@gnu.org>
Update all copyright notices.
2023-01-17 Werner Lemberg <wl@gnu.org>
* src/tools/no-copyright: Updated.
2023-01-17 Ben Wagner <bungeman@chromium.org>
[base] 'close' callback may not use `stream->memory`.
The documentation for `FT_StreamRec::memory` states that it 'shouldn't be
touched by stream implementations'. This is true even for internal
implementations of the 'close' callback, since it is not guaranteed that
`memory` will even be set when the 'close' callback occurs.
* src/base/ftobjs.c (new_memory_stream): stash current `memory` in
`stream->descriptor`.
(memory_stream_close): Use it.
2023-01-17 Ben Wagner <bungeman@chromium.org>
[base] Always close user-provided stream.
The `FT_Open_Face` documentation states
> If `FT_OPEN_STREAM` is set in `args->flags`, the stream in `args->stream`
> is automatically closed before this function returns any error (including
> `FT_Err_Invalid_Argument`).
However, if the user provides a stream in `args.stream` with
`FT_OPEN_STREAM` set and a `close` function, but then for some reason passes
NULL for `aface` and a non-negative `face_index`, the error
`Invalid_Argument` is returned but the `close` callback will not be called
on the user-provided stream. This may cause resource leaks if the caller is
depending on the `close` callback to free resources.
The difficulty is that a user may fill out a `FT_StreamRec` and pass its
address as `args.stream`, but the stream isn't really 'live' until
`FT_Stream_New` is called on it (and `memory` is set). In particular, it
cannot really be cleaned up properly in `ft_open_face_internal` until the
stream pointer has been copied into the `stream` local variable.
* src/base/ftobj.c (ft_open_face_internal): Ensure that user-provided
`args.stream.close` is called even with early errors.
2023-01-17 Ben Wagner <bungeman@chromium.org>
[base] Fix leak of internal stream marked external.
`open_face_from_buffer` allocates a new `FT_Stream` to pass to
`ft_open_face_internal`. Because this is an `FT_OPEN_STREAM`,
`ft_open_face_internal` will mark this as an 'external stream', which the
caller must free. However, `open_face_from_buffer` cannot directly free it
because the stream must last as long as the face. There is currently an
attempt at this by clearing the 'external stream' bit after
`open_face_from_buffer` returns successfully. However, this is too late as
the original stream may have already been closed and the stream on the face
may not be the same stream as originally passed.
It is tempting to use `FT_OPEN_MEMORY` and let `ft_open_face_internal`
create the stream internally. However, with this method there is no means
to pass through a 'close' function to the created stream to free the
underlying data, which must be owned by the stream.
A possibility is to check on success if the stream of the face is the same
as the original stream. If it is then unset the external flag. If not,
then free the original stream. Unfortunately, while no current
implementation does so, it is possible that the face still has the original
stream somewhere other than as the `FT_FaceRec::stream`. The stream needs
to remain available for the life of the face or until it is closed,
whichever comes earlier.
The approach taken here is to let the stream own itself. When the stream is
closed it will free itself.
* src/base/ftobjs.c (memory_stream_close): Free `stream`.
(open_face_from_buffer): Simplify error handling, since
`ft_open_face_internal` always closes `args.stream` on any error.
Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=54930
2023-01-16 Werner Lemberg <wl@gnu.org>
sr/*.c: Various minor fixes.
* src/autofit/ft-hb.c (_hb_ft_reference_table): Call `FT_UNUSED` after
variable declarations.
* src/gxvalid/gxvjust.c (gxv_just_widthDeltaClusters_validate): Eliminate
unused variable.
* src/gzip/ftgzip.c: Don't call GCC '-Wstrict-prototypes' pragma for C++
compiler.
* src/sfnt/ttcolr.c (ENSURE_READ_BYTES): Remove final semicolon to avoid
compiler warning.
* src/sfnt/ttsvg.c (tt_face_load_svg_doc): Fix signedness warning.
2023-01-16 Dominik Röttsches <drott@chromium.org>
[sfnt] Remove temporary runtime flag for variable 'COLR' v1.
Fixes #1187.
* src/sfnt/ttcolr.c (top level, read_paint, tt_face_load_colr,
tt_face_free_colr, get_deltas_for_var_index_base,
tt_face_get_color_glyph_clipbox, tt_face_get_colorline_stops): Remove macro
definition `VARIABLE_COLRV1_ENABLED` and its usage.
* src/truetype/ttdriver.c (tt_property_set): Remove parsing of
'TEMPORARY-enable-variable-colrv1' property name.
* src/truetype/ttobjs.h (TT_DriverRec): Remove `enable_variable_colrv1`
flag.
2023-01-07 Werner Lemberg <wl@gnu.org>
* src/autofit/ft-hb.c (_hb_ft_reference_table): Minor integration fixes.
2023-01-07 Ben Wagner <bungeman@chromium.org>
[truetype] Reset cvt and storage in context load.
Currently the cvt and storage are saved and restored in `TT_RunIns`.
However, this is too granular as the cvt and storage area should be set to
the original cvt and storage area only when setting up the hinting context.
This allows for the cvt and storage area to be modified while parsing
multiple glyphs, as is the case with composite glyphs.
* src/truetype/ttinterp.h (TT_ExecContextRec): Remove `origCvt` and
`origStorage`.
* src/truetype/ttinterp.c (TT_RunIns): Don't save and restore the cvt and
storage area.
(Modify_CVT_Check, Ins_WS): Switch from "if in glyph and using original data
do copy on write" to "if in glyph and not using glyph specific data do copy
on write".
2023-01-06 Matthias Clasen <mclasen@redhat.com>
[autofit] Don't depend on 'hb-ft'.
The circular dependency is still there, but at least we no longer depend on
the HarfBuzz API that is only present if HarfBuzz has been built with
FreeType support, making the bootstrapping a bit easier.
* src/autofit/ft-hb.c, src/autofit/ft-hb.h: New files, providing
`_hb_ft_font_create`, which is more or less a verbatim copy of the
corresponding HarfBuzz code from file `hb-ft.cc`.
* src/autofit/afglobal.c (af_face_globals_new): Use it.
* src/autofit/afshaper.h: Don't include `hb-ft.h` but `ft-hb.h`.
* src/autofit/autofit.c: Include `ft-hb.c`.
* LICENSE.TXT: Updated.
2023-01-06 Ben Wagner <bungeman@chromium.org>
[truetype] Keep variation store consistent.
`tt_var_load_item_variation_store` fills out a `GX_ItemVarStore`. While it
may return an error, the item store must be left in a consistent state so
that any use or destruction of the item store can properly use or free the
data in it. Before this change the counts from the font data were read
directly into the item store before the actual allocation of the arrays to
which they referred. There exist many opportunities between the time the
counts are read and the arrays are allocated to return early due to invalid
data. When this happened the item store claimed to have entires it actually
did not, leading to crashes later when it was used.
Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=54449
* src/truetype/ttgxvar.c (tt_var_load_item_variation_store): Read the counts
into local variables and store them in the item store only after the related
arrays are actually created on the item store.
2023-01-05 Ben Wagner <bungeman@chromium.org>
[base] Report used stream's external status.
In `open_face` the initial stream is set on the face, along with the
information about if FreeType is the owner of the stream object itself. The
loaders may in the course of their work replace this stream with a new
stream (as is the case for 'woff' and 'woff2'), which may have a different
ownership than the initial stream object (likely the original stream object
is owned by the user and is external, while the new stream object is created
internally to FreeType and is internal). When the stream is replaced, the
face's flags are updated with the new ownership status.
However, `open_face` cannot itself free this stream as its caller
`ft_open_face_internal` is responsible for this. In addition, in the case
of an error `open_face` cannot return an actual face with the new stream and
its ownership status to the caller. As a result, it must pass this
information back to the caller as a sort of "failed face" so that the caller
can clean up.
`open_face` was already passing back the new stream but was not passing back
the stream ownership information. As a result the stream may not have been
free'd when needed.
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=54700
* src/base/ftobjs.c (open_face): Pass back the ownership information as
well.
(ft_open_face_internal): Updated.
2023-01-05 Noah Cabral <cnoah1705@gmail.com>
fix spelling err in LICENSE.txt
2023-01-05 Dominik Röttsches <drott@chromium.org>
[sfnt] Fix color stop bounds check calculation at table end.
Fixes https://bugs.chromium.org/p/skia/issues/detail?id=14021
* src/sfnt/ttcolr.c (VAR_IDX_BASE_SIZE): New macro.
(tt_face_get_colorline_stops): Fix off-by-one bounds check calculation, take
`VarColorStop` into account, and hopefully make it easier to read.
2023-01-05 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/base/ftobjs.c (FT_Request_Metrics): Avoid division by zero.
The division-by-zero might happen in broken fonts (see #1194).
Instead of returning a huge number from FT_DivFix and failing
to scale later, we now bail immediately.
2022-12-20 Alexei Podtelezhnikov <apodtele@gmail.com>
[psaux] Delay the upem validity assertion.
Fixes #1194.
* src/psaux/psft.c (cf2_getUnitsPerEm): Remove the upem assert.
(cf2_checkTransform): Assert the upem validity after checking the scale.
2022-12-14 David Vanderson <david.vanderson@gmail.com>
Werner Lemberg <wl@gnu.org>
[gzip] Make static compilation not leak global symbols.
* src/gzip/ftgzip.c (HAVE_HIDDEN): Do not define; it is no longer needed
because everything is static.
(HAVE_MEMCPY): Define.
(zcalloc, zcfree): Remove no longer needed definitions (because `Z_SOLO` is
active).
* src/gzip/patches/freetype-zlib.diff: Regenerated.
Fixes #1146.
2022-12-14 Werner Lemberg <wl@gnu.org>
* src/gzip/ftzconf.h: Updated to zlib 1.2.13.
I forgot to copy that file.
2022-12-14 Werner Lemberg <wl@gnu.org>
* builds/unix/configure.raw: Don't check for `memcpy` and `memmove`.
We expect a C99 compiler, and both functions are part of this standard.
2022-12-13 Werner Lemberg <wl@gnu.org>
[sdf, sfnt] Handle minor compiler warnings.
* src/sdf/ftsdf.c (get_min_distance_conic): Initialize `nearest_point`.
* src/sfnt/ttsvg.c (find_doc): Initialize `mid_doc`.
Fixes #1195.
2022-12-07 Werner Lemberg <wl@gnu.org>
* subprojects/zlib.wrap: Micro-update from upstream.
2022-12-06 Jiří Malák <malak.jiri@gmail.com>
* include/freetype/internal/ftcalc.h (FT_MSB): Support Open Watcom 2.0.
Closes !232.
2022-11-23 Luca Bacci <luca.bacci982@gmail.com>
* src/base/ftdbgmem.c (ft_mem_source_compare): Add FT_COMPARE_DEF.
Closes !230.
2022-11-21 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/autofit/afloader.c (af_loader_load_glyph): Remove `size` check.
This is done by `FT_Load_Glyph`.
2022-11-18 Alexei Podtelezhnikov <apodtele@gmail.com>
Comments added.
2022-11-16 Johan Matsson <mjunix@ at github>
* src/autofit/afloader.c (af_loader_load_glyph): Fix dereference.
This must happen after the NULL check.
Taken from
https://github.com/freetype/freetype/pull/2
2022-11-15 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/pcf/pcfutil.c ({Two,Four}ByteSwap): Use builtins or shifts.
We trust glibc which uses shifts or builtins to swap bytes. This
must be more efficient.
2022-11-14 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (tt_hvadvance_adjust): Integer overflow.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50462
2022-11-14 Loïc Yhuel <loic.yhuel@softathome.com>
[meson] Use generated ftmodule.h
ftmodule.h is generated at the root of the build directory, but FT_CONFIG_MODULES_H
(freetype/config/ftmodule.h) is used instead.
This makes the build fail when disabling modules in modules.cfg.
* meson.build (harfbuzz_dep): Add '-DFT_CONFIG_MODULES_H=<ftmodule.h>'.
2022-11-14 Loïc Yhuel <loic.yhuel@softathome.com>
[meson] Fix generated ftmodule.h
The sdf module wasn't recognized, so the generated ftmodule.h had "None_renderer_class".
* builds/meson/parse_modules_cfg.py: Handle sdf in RASTER_MODULES.
2022-11-12 Dominik Röttsches <drott@chromium.org>
Add `TT_CONFIG_OPTION_NO_BORING_EXPANSION` configuration macro.
This gives users a possibility to deactivate new features not (yet) in the
OpenType standard.
* include/freetype/config/ftoption.h, devel/ftoption.h
(TT_CONFIG_OPTION_NO_BORING_EXPANSION): New macro.
* src/truetype/ttgxvar.c (ft_var_load_avar): Use it to disable 'avar'
version 2.0 support.
2022-11-12 Behdad Esfahbod <behdad@behdad.org>
[truetype] Improve bounds checks for `ItemVariationStore`.
* src/truetype/ttgxvar.c (tt_hvadvance_adjust): Move bounds check ...
(tt_var_get_item_delta): ... to this function, because it is safer. For
example, the 'avar' table 2.0 codepath was not performing a bounds check at
all.
2022-11-12 Behdad Esfahbod <behdad@behdad.org>
[truetype] In `ItemVariationStore`, value 0xFFFF for `dataCount` is valid.
It corresponds to outer indices of 0 to 0xFFFE.
* src/truetype/ttgxvar.c (tt_var_load_item_variation_store): Remove invalid
code.
2022-11-11 Alexei Podtelezhnikov <apodtele@gmail.com>
[pcf] Improve CMap efficiency and readability.
* src/pcf/pcfdrivr.c (pcf_cmap_char_{index,next}): Check and walk
the encoding array indexes.
2022-11-10 Sam James <sam@gentoo.org>
Fix `-Wstrict-prototypes`.
* builds/unix/configure.raw: Fix `-Wstrict-prototypes`.
Clang 16 warns on these and they will be dropped in C23.
* builds/unix/freetype2.m4: Ditto.
2022-11-09 Ben Wagner <bungeman@chromium.org>
[truetype] Check avar_segment before access
* src/truetype/ttgxvar.c (tt_done_blend): check `avar_segment` before
accessing to free its `correspondence`.
Reported as:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53062
2022-11-09 Ben Wagner <bungeman@chromium.org>
[truetype] Restore behavior of ft_var_load_hvvar
* src/truetype/ttgcvar.c (ft_var_load_hvvar): restore previous behavior
In a previous change [0] the behavior of `ft_var_load_hvvar` was changed
to not load the item variation store if it was at offset 0, but not
return an error when this happened. This broke any users, like
`tt_hvadvance_adjust`, that rely on successful completion of
`ft_var_load_hvvar` to imply that returned table's `itemStore` had been
initialized. This lead such users to dereference NULL.
This change appears to have been unintentional and unrelated to the
actual avar2 changes. As a result, fix these NULL dereferences by
restoring the code to always attempt to initialize the `itemStore`.
[0] ae4eb996 "[truetype] Add support for `avar` table 2.0 format."
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53061
2022-11-08 Werner Lemberg <wl@gnu.org>
docs/CHANGES: Updated.
2022-11-08 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[build] use AC_CHECK_PROG() macro for libpng-config detection
* builds/unix/configure.raw: use AC_CHECK_PROG() instead of `which` to find `libpng-config`.
2022-11-08 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[build] fix for make multi
Fix "make multi" by MR !223
* include/freetype/internal/services/svmm.h: include ftmm.h to define FT_Get_MM_Func.
* src/truetype/ttgxvar.h: include ftmmtypes.h to use GX_AVarTable properly.
* src/base/ftmac.c: include ftdebug.h to use FT_THROW() properly.
2022-11-08 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/pfr/pfrsbit.c (pfr_lookup_bitmap_data): Accelerate the search.
This is mostly for consistency because PFR fonts with bitmap strikes
do not seem to exist.
2022-11-06 Alexei Podtelezhnikov <apodtele@gmail.com>
[bdf, pfr, psnames] Accelarate charmap searches.
The binary searches within charmaps can be accelerated because they
often contain dense continuous blocks of character codes. Within such
blocks, you can predict matches based on misses. This method has been
deployed in `bdf` since 0f122fef34; we only refactor it there. We now
use it in `pfr` and `psnames`, which speeds up the unicode charmap
access by about 50% in PFR and Type 1 fonts.
* src/bdf/bdfdrivr.c (bdf_cmap_char_{index,next}): Refactor.
* src/pfr/pfrcmap.c (pfr_cmap_char_{index,next}): Predict `mid` based
on the mismatch distance.
* src/psnames/psmodule.c (ps_unicodes_char_{index,next}): Ditto.
2022-11-04 Behdad Esfahbod <behdad@behdad.org>
[truetype] Add support for `avar` table 2.0 format.
See
https://github.com/harfbuzz/boring-expansion-spec/blob/main/avar2.md
for the specification.
Currently, this is implemented only in most recent OS versions on Apple
platforms and in the HarfBuzz library, but it is expected to be added to the
OpenType standard soon.
* src/truetype/ttgxvar.h (GX_AVarTableRec): New structure.
(GX_BlendRec): Use it to replace `avar_segment` with `avar_table`.
* src/truetype/ttgxvar.c (ft_var_load_avar): Load new table version.
(ft_var_to_normalized, tt_done_blend): Extend for new format.
(ft_var_load_hvvar, ft_var_to_design): Updated.
2022-10-24 Werner Lemberg <wl@gnu.org>
Replace '1/64th' (and similar entries) with '1/64' in docs and comments.
2022-10-24 Ivan Panchenko <ivanpan3@gmail.com>
* include/freetype/*: Fix documentation typos.
2022-10-21 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/truetype/ttgload.c: Cosmetic changes.
2022-10-21 Alexei Podtelezhnikov <apodtele@gmail.com>
[cff, truetype] Simplify SVG metrics scaling.
Use pre-calculated scaling factors. Also, the advance widths used
to be rounded, which was incorrect.
* src/cff/cffgload.c (cff_slot_load): Use `x_scale` and `y_scale`.
* src/truetype/ttgload.c (TT_Load_Glyph): Ditto.
2022-10-20 Werner Lemberg <wl@gnu.org>
* subprojects/zlib.wrap: Update to zlib version 1.2.13.
2022-10-18 Dominik Röttsches <drott@chromium.org>
[sfnt] Additional bounds checks for `COLR` v1 table handling.
* src/sfnt/ttcolr.c (read_paint): Add `colr` argument, necessary for...
... another use of `ENSURE_READ_BYTES`.
Update callers.
(tt_face_get_paint_layers): Ensure that the 4-byte paint table
offset can be read.
This is a follow-up to !124 and issue
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=52404
2022-10-18 Werner Lemberg <wl@gnu.org>
[gzip] Update sources to zlib 1.2.13.
2022-10-18 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/sfnt/ttsbit.c (tt_face_load_strike_metrics): Simplify calculations.
2022-10-18 Werner Lemberg <wl@gnu.org>
Minor formatting.
2022-10-18 Dominik Röttsches <drott@chromium.org>
[sfnt] Guard individual `COLR` v1 paint field reads.
* src/sfnt/ttcolr.c (ENSURE_READ_BYTES): New macro.
(read_paint): Use it – after the start pointer `p` has been checked for
whether it allows reading the format byte, each successive paint table field
read need to be bounds-checked before reading further values.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=52404
2022-10-17 Xiang Xiao <xiaoxiang@xiaomi.com>
* builds/toplevel.mk: Prefix all paths with `$(TOP_DIR)/`.
This is useful for builds that are not started from the root directory.
2022-10-17 Liu Kunpeng(柳鲲鹏) <liukunpeng@ts-it.cn>
* src/base/ftsynth.c (FT_GlyphSlot_Slant): New API with custom slant.
* include/freetype/ftsynth.h (FT_GlyphSlot_Slant): Declare it.
2022-10-15 Alexei Podtelezhnikov <apodtele@gmail.com>
Note the lack of floating-point data types.
2022-10-10 Werner Lemberg <wl@gnu.org>
[cff] Remove `FT_CONFIG_OPTION_NO_GLYPH_NAMES`.
This ancient option stayed completely undocumented. Given that the 'cff'
driver requires the 'psnames' module, it makes no sense today to have this
macro.
* src/cff/cffdrivr.c (cff_services), src/cff/cffobjs.c (cff_face_init):
Remove corresponding conditional code.
2022-10-10 Werner Lemberg <wl@gnu.org>
Synchronize `ftoption.h` flavours.
2022-10-10 Werner Lemberg <wl@gnu.org>
Minor comment changes.
2022-10-05 Alexei Podtelezhnikov <apodtele@gmail.com>
Improve FT_Get_Name_Index docs and place it next to FT_Get_Glyph_Name.
2022-10-04 Alexei Podtelezhnikov <apodtele@gmail.com>
[autofit] Reset the face charmap directly.
There is no need to validate the original charmap in `FT_Set_Charmap`.
It can be reset directly.
* src/autofit/afglobal.c (af_face_globals_compute_style_coverage):
Use direct assignment.
* src/autofit/af{latin,cjk,indic}.c (af_latin_metrics_init): Ditto.
2022-10-04 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/type1/t1afm.c (T1_Read_PFM): Set charmaps directly.
As with the previous commit, we can avoid the validation checks
of `FT_Set_Charmap` and set it directly when choosing from the
available list.
2022-10-03 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/cache/ftccmap.c (FTC_CMapCache_Lookup): Avoid `FT_Set_Charmap`.
Set charmap aggressively without all validations of `FT_Set_Charmap`
because we take it from the available array and only temporarily.
Even CMap Format 14 will gracefully return 0.
2022-10-03 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/cache/ftcbasic.c (ftc_basic_family_get_count): Remove redundancy.
2022-09-30 Werner Lemberg <wl@gnu.org>
* src/psaux/pshints.c (cf2_hintmap_insertHint): Fix midpoint computation.
Replace '(start + end) / 2' with 'start + (end - start) / 2' to avoid
overflow.
Fixes #1180.
2022-09-30 Werner Lemberg <wl@gnu.org>
* src/psaux/pshints.c (cf2_hintmap_build): Improve debugging output.
2022-09-29 mlugg <mlugg@mlugg.co.uk>
[truetype] Fix undefined pointer arithmetic.
* src/truetype/ttgxvar.c (tt_var_get_item_delta, ft_var_load_mvar): Use
`FT_OFFSET`.
2022-09-29 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/sfnt/ttsbit.c (tt_face_load_strike_metrics): Use lighter FT_DivFix.
2022-09-29 Ali Chraghi <alichraghi@pm.me>
[base] FT_Attach_Stream: Make `parameters` argument constant.
2022-09-29 Azamat Hackimov <azamat.hackimov@gmail.com>
* src/tools/*.py: Migrate to Python 3.
Fixes #1185, closes !205. Formatting changes according to PEP8.
2022-09-27 Dominik Röttsches <drott@chromium.org>
[sfnt] Guard access in 'COLR' table when requesting child table pointer.
* src/sfnt/ttcolr.c (tt_face_get_colorline_stops, read_paint): Tighten
pointer bounds checks.
(get_child_table_pointer): Check whether incoming pointer `p` lies within
the 'COLR' table.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=51816
2022-09-27 Ben Wagner <bungeman@chromium.org>
[sfnt] Add SVG document bounds checking.
Add a check that the document content is actually contained within the
`SVG ` table. Without this check a malformed font may claim arbitrary
memory as its document content.
* src/sfnt/ttsvg.c (tt_face_load_svg): Take `numEntries` into account when
testing 'documentRecord' extents.
(find_doc): Rename `stream` to `document_records` for clarity.
(tt_face_load_svg_doc): Split `doc` from `doc_list` pointer for clarity.
Test that the document content is contained within the table.
Ensure minimum length of document before testing for gzip format.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=51812
2022-09-23 Alexei Podtelezhnikov <apodtele@gmail.com>
[base] Clean up the bitmap flow control.
* src/base/ftbitmap.c (FT_Bitmap_Copy): Flip the copy if its pitch
is trully opposite, zero is not a positive value.
(FT_Bitmap_Convert): Set negative pitch as needed, accept negative
alignment values.
2022-09-22 Alexei Podtelezhnikov <apodtele@gmail.com>
[base] Discard and recreate bitmaps for copying and converting.
Reusing target bitmaps for copying and converting is permitted. It is,
however, pointless to preserve their content before overwriting. Free-
malloc might be faster than realloc.
* src/base/ftbitmap.c (FT_Bitmap_Copy, FT_Bitmap_Convert): Free
an old buffer and create a new one.
2022-09-16 Dominik Röttsches <drott@chromium.org>
Reject 'COLR' table if version is 1 but header too small.
* src/sfnt/ttcolr.c (tt_face_load_colr): If the version is determined to
be 1, then the table size has to be at least the size of the v1 header.
Also, for peeking the number of base glyphs and entries in the layer list,
ensure that the table is sufficiently long.
Fixes #1179. Original patch by Sergey Temnikov.
2022-09-15 Werner Lemberg <wl@gnu.org>
* src/otvalid/otvgsub.c (otv_SingleSubst_validate): Fix format 1 handling.
Fixes #1181.
2022-09-06 Dominik Röttsches <drott@chromium.org>
[truetype] Reject 'fvar' loading when `num_instances` is too small.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Reject retrieving master when
'fvar' values locally do not match with sanitized values from initialization
at `sfnt_init_face` time.
Reported as
https://bugs.chromium.org/p/chromium/issues/detail?id=1360295
2022-09-05 Dominik Röttsches <drott@chromium.org>
[sfnt] Handle variable `COLR` v1 fonts without delta set index map
Fixes #1178.
* src/sfnt/ttcolr.c (get_deltas_for_var_index_base): Set outer index to
0 and inner index to the delta index when retrieving deltas if the
`COLR` table has no delta set index map.
2022-09-05 Dominik Röttsches <drott@chromium.org>
[sfnt] Pointer sanity checks before reading layer info in 'COLR' v0
* src/sfnt/ttcolr.c (tt_face_get_colr_layer): Check that the pointer to
read from is within the 'COLR' table.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50633
2022-09-05 Werner Lemberg <wl@gnu.org>
[autofit] Minor fix.
* src/autofit/afglobal.c (af_face_globals_compute_style_coverage): Avoid
compiler warning.
2022-09-05 Dominik Röttsches <drott@chromium.org>
[sfnt] Don't require 'gvar' table to support variation fonts.
Fixes #1172.
* src/sfnt/sfobjs.c (sfnt_load_face): Tag font as Multiple Masters font if
`fvar` is present; do not require other tables to be present.
* src/truetype/ttgxvar.c (tt_set_mm_blend): Allow for a missing 'gvar' table
when setting variation coordinates. However, if a 'gvar' table is actually
present, do perform a sanity check and fail on malformedness.
(TT_Get_MM_Var): Don't assume 'fvar' needs 'gvar' or 'CFF2 tables in all
cases, which is an overly tight check.
2022-08-27 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/base/ftver.rc: Explicitly use UTF-16.
Fixes #1177 to avoid mistranslation and other problems.
2022-08-26 Dominik Röttsches <drott@chromium.org>
[sfnt] Avoid undefined shifts in `COLR` v1 color line retrieval
* src/sfnt/ttcolr.c (tt_face_get_colorline_stops): Disambiguate shift
behavior by using multiplication using macros from ftcalc.h.