Commit Graph

5383 Commits

Author SHA1 Message Date
Werner Lemberg fc08295650 * src/sfnt/sfwoff.c (reconstruct_glyf): Fix gcc 10 warning. 2022-04-01 14:50:44 +02:00
Werner Lemberg 1603378b91 [gzip] Update sources to zlib 1.2.12. 2022-04-01 10:47:23 +02:00
Werner Lemberg 695d606ae5 Whitespace. 2022-04-01 08:50:33 +02:00
Ben Wagner d247c56278 [truetype] Use SUB_LONG for component offset.
* src/truetype/ttgload.c (TT_Process_Composite_Component): do it.

Bug: https://crbug.com/1309429
2022-04-01 05:50:41 +00:00
Werner Lemberg e50798b720 * Version 2.12.0 released.
==========================

Tag sources with `VER-2-12-0'.

* docs/VERSION.TXT: Add entry for version 2.12.0.
* docs/CHANGES, docs/release: 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/2.11.1/2.12.0/, s/2111/2120/.

* include/freetype/freetype.h (FREETYPE_MINOR): Set to 12.
(FREETYPE_PATCH): Set to 0.

* builds/unix/configure.raw (version_info): Set to 24:2:18.
* CMakeLists.txt (VERSION_MINOR): Set to 12.
(VERSION_PATCH): Set to 0.

* builds/toplevel.mk (do-dist): Generate `ChangeLog` entries for all commits
since version 2.11.0 (when we stopped creating this file manually).
2022-03-31 13:55:50 +02:00
Werner Lemberg 87989a1435 Fix clang++ warnings.
* src/base/ftglyph.c (ft_svg_glyph_prepare), src/base/ftobj.c
(ft_glyphslot_init), src/cache/ftccmap.c (ftc_cmap_node_new),
src/cache/ftcimage.c (FTC_INode_New), src/lzw/ftlzw.c (FT_Stream_OpenLZW),
src/psaux/psobjs.c (ps_parser_load_field), src/pshinter/pshglob.c
(psh_globals_new), src/sfnt/ttsvg.c (tt_face_load_svg_doc): Initialize
variables used for allocation.

* src/sdf/ftsdf.c (split_sdf_conic, split_sdf_cubic): Change type of
`max_splits` to FT_UInt.
(sdf_generate_bounding_box): Add cast.
2022-03-31 07:49:35 +02:00
Werner Lemberg a8e4563c34 Add `FT_FACE_FLAG_SBIX_OVERLAY` and `FT_HAS_SBIX_OVERLAY`.
* include/freetype/freetype.h (FT_FACE_FLAG_SBIX_OVERLAY,
FT_HAS_SBIX_OVERLAY): New macro.

* src/sfnt/ttsbit.c (tt_face_load_sbit): Handle `FT_FACE_FLAG_SBIX_OVERLAY`.
Remove obsolete tracing message.
2022-03-25 06:37:41 +00:00
Werner Lemberg 1949a7ec3a Add `FT_PARAM_TAG_IGNORE_SBIX`.
This is another bit to handle 'sbix' tables as described in the OpenType
specification.

* include/freetype/ftparams.h (FT_PARAM_TAG_IGNORE_SBIX): New macro.

* src/sfnt/sfobjc.c (is_apple_sbix): Rename to...
(has_sbix): ... this.
Check for more sbit tables.
Handle `FT_PARAM_TAG_IGNORE_SBIX` to eventually control `has_sbix`.
Only call sbit table loader if an sbit table is present.
2022-03-25 06:37:41 +00:00
Werner Lemberg ac4c1ebf7e [truetype] Fix 'sbix' table handling.
* src/sfnt/ttsbit.c (tt_face_load_sbix_image): Correct calculation of
'metrics->horiBearingY'.
Set vertical metrics.

* src/sfnt/sfobjs.c (sfnt_load_face): Adjust setting of `FT_FACE_FLAG_SBIX`.
Handle metrics of fonts with 'sbix' table.

* src/truetype/ttgload.c (TT_Load_Glyph): For 'sbix' embedded bitmaps, apply
bbox offset and bearing values of the corresponding glyph in the 'glyf'
table if it exists and has a contour.

* src/truetype/ttobjs.c (tt_face_init): Handle font with 'sbix' table.

Fixes issue #998.
2022-03-25 06:37:41 +00:00
Werner Lemberg 907715a6a2 Add `FT_FACE_FLAG_SBIX` and `FT_HAS_SBIX`.
Fonts with 'sbix' tables need special handling by the application.

* include/freetype/freetype.h (FT_FACE_FLAG_SBIX, FT_HAS_SBIX): New macros.

* src/sfnt/sfobjs.c (sfnt_load_face): Set `FT_FACE_FLAG_SBIX` if 'sbix'
table is present.
2022-03-25 06:37:41 +00:00
Werner Lemberg fc15ebe0a6 * src/sfnt/ttkern.c (tt_face_get_kerning): Exit early if no table.
Fixes #1141.
2022-03-21 11:17:28 +01:00
Ben Wagner a960be9e5e [woff2] Support overlap flag for simple glyphs.
In the woff2 spec it has been proposed to allow the OVERLAP_SIMPLE flag
to be retained through the woff2 format [0].

[0] https://www.w3.org/TR/WOFF2/#glyf_table_format

* src/sfnt/sfwoff2.h (GLYF_OVERLAP_SIMPLE): add glyf flag.

* src/sfnt/sfwoff2.c (reconstruct_glyf): parse optionFlags and
overlapSimpleBitmap[]. (store_points): set OVERLAP_SIMPLE on first point's
flag if the overlap bit is set.
2022-03-20 07:27:43 +00:00
Werner Lemberg d2c3bbcd8e [cff] Synchronize `cff_slot_load` with `TT_Load_Glyph`.
* src/cff/cffgload.c (IS_DEFAULT_INSTANCE): New macro.
(cff_slot_load): Use it.
2022-03-19 19:31:25 +01:00
Werner Lemberg 0c2bdb01a2 * src/base/ftobjs.c (FT_Request_Size): Guard `face->size`.
Fixes #1140.
2022-03-19 09:37:28 +01:00
Werner Lemberg d014387ad4 * src/base/ftobjs.c (ft_open_face_internal): Thinko. 2022-03-19 09:30:45 +01:00
Werner Lemberg 22a0cccb4d * src/base/ftobjs.c (ft_open_face_internal): Properly guard `face_index`.
We must ensure that the cast to `FT_Int` doesn't change the sign.

Fixes #1139.
2022-03-19 06:40:17 +01:00
Werner Lemberg 53dfdcd819 [sfnt] Avoid invalid face index.
Fixes #1138.

* src/sfnt/sfobjs.c (sfnt_init_face), src/sfnt/sfwoff2.c (woff2_open_font):
Check `face_index` before decrementing.
2022-03-17 19:24:16 +01:00
Werner Lemberg 1e2eb65048 Documentation, whitespace. 2022-03-07 10:13:44 +01:00
Anuj Verma 360e2507a3 [sdf] Fix corner checks and improve performance.
* src/sdf/ftsdf.c (sdf_generate_bounding_box): Always check for a corner if
two distances (for different curves) are very close.

(sdf_conic_to): Check whether the conic curve can be treated as a line
(which happens if the control point coincides with any end point).
2022-03-05 17:00:10 +01:00
Anuj Verma 2600ef637e [sdf] Implement deviation-based splitting for Bezier curves.
* src/sdf/ftsdf.c (split_sdf_cubic, split_sdf_shape): Add checks to figure
out the deviation of Bezier curves and stop splitting if the curve is flat
enough.

* src/sdf/ftsdfcommon.h (ONE_PIXEL): New macro.
2022-03-05 16:53:45 +01:00
Ben Wagner 335224beee [sfnt] Fix bounds check in SVG.
The `SVG_DOCUMENT_LIST_MINIMUM_SIZE` macro is non trivial and not
protected by parentheses. As a result, the expression
`table_size - SVG_DOCUMENT_LIST_MINIMUM_SIZE` expands to
`table_size - 2U + SVG_DOCUMENT_RECORD_SIZE` instead of the expected
`table_size - (2U + SVG_DOCUMENT_RECORD_SIZE)`. This causes an incorrect
bounds check which may lead to reading past the end of the `SVG ` table.

* src/sfnt/ttsvg.c (tt_face_load_svg): wrap macro definitions in
parentheses.

Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=45179
2022-03-03 16:42:54 -05:00
Ben Wagner 034e5dbf92 [psaux] Full bounds check for OtherSubr 19.
It is possible for OtherSubr 19 to be invoked when `decoder->buildchar` is
NULL (so that `decoder->len_buildchar` is 0), the `blend` is non-NULL with
`blend->num_designs` set to 2, and the user supplied `idx` to be large (for
example 0xFFFFFFFE).  Since these are all `FT_UInt32` the existing bounds
check overflows in a well defined manner, allowing for an invalid call to
`memcpy`.

In addition, it is possible to call OtherSubr 19 with
`decoder->len_buildchar`, `blend->num_designs`, and `idx` all zero (implying
that `blend->weight_vector` and `decoder->buildchar` are NULL).  This passes
the bounds check (it is logically always fine to copy nothing starting at
index zero) but may invoke undefined behavior in `ft_memcpy` if it is backed
by `memcpy`.  Calling `memcpy` with either the `src` or `dst` NULL is
undefined behavior (even if `count` is zero).

* src/psaux/psintrp.c (cf2_interpT2CharString): Correctly check that
`blend->num_designs` can be copied to `decoder->buildchar[idx]`.
Also avoid passing NULL to `ft_memcpy`.

Bug: https://crbug.com/1299259
2022-02-23 17:42:55 +01:00
Werner Lemberg 6c5522c6f8 * src/bdf/README: Updated. 2022-02-19 13:37:07 +01:00
Werner Lemberg ca46bc0cf2 * builds/mac/ftmac.c, src/base/ftmac.c: s|FT_MAC_H|<freetype/ftmac.h>|. 2022-02-19 13:36:25 +01:00
Werner Lemberg 5b26e92a0f src/sfnt/ttkern.c (tt_face_load_kern): Micro-optimize.
A kerning table can be handled by binary search if it has equal entries.

Fixes #1132.
2022-02-19 07:20:24 +01:00
Alexei Podtelezhnikov 00ae29fcd2 [pshinter] Tune PSH_STRONG_THRESHOLD_MAXIMUM value.
Before the change, the hinting engine frequently confused horizontal
stem and serif hints making some stems too thin and some serifs too
thick. The value was tuned using serif fonts from the URW+ base 35
collection.

* src/pshinter/pshalgo.c [PSH_STRONG_THRESHOLD_MAXIMUM]: s/30/12/.
2022-02-12 23:42:08 -05:00
Werner Lemberg 338b4e8846 [type42] Fix `FT_Get_PS_Font_Private` for this format.
Since Type42 fonts don't have a 'Private' dictionary, the return value
should be `FT_Err_Invalid_Argument`.

* src/type42/t42drivr.c (t42_ps_get_font_private): Removed.
(t42_service_ps_info): Updated.
2022-02-11 19:32:49 +01:00
Alexei Podtelezhnikov 1680885aa5 [pshinter] Clear reused mask.
In PS hinter, memory allocations persist until the module is done.
Therefore, we have to clear reused masks.

* src/pshinter/pshrec.c (ps_mask_table_alloc): Clear reused mask.
2022-02-09 16:41:07 +00:00
Alexei Podtelezhnikov 0447df71e7 [pshinter] Use unsigned indices.
This reduces casting and eliminates some checks.

* src/pshinter/pshrec.c (ps_mask_test_bit, ps_mask_table_merge,
ps_dimension_add_t1stem, ps_hints_t1stem3): Updated.
(ps_dimension_add_counter): Updated, unnecessary checks removed.
2022-02-09 15:04:58 +00:00
Alexei Podtelezhnikov ed0e2e76d8 [pshinter] Fix mask merging.
We forgot to update the number of bits when merging a larger mask
into a smaller one.  This fix might have rendering effects.

* src/pshinter/pshrec.c (ps_mask_table_merge): Inherit the number
of bits from a larger mask. There is no need to zero unused bits,
already zeroed during allocation.
(ps_mask_clear_bit): Removed.
(ps_mask_ensure): Minor.
2022-02-08 16:35:14 -05:00
Alexei Podtelezhnikov 7c6b2f20b0 [pshinter] Revise the hint table handling.
* src/pshinter/pshrec.c (ps_hint_table_ensure): Remove redundant size
check; avoid array zeroing because it is fully initialized when used.
(ps_hint_table_alloc): Fix off-by-one comparison and remove another
zeroing of the array elements.
2022-02-08 14:37:34 +00:00
Werner Lemberg 24db55ecb8 Various minor doc fixes. 2022-02-06 21:06:52 +01:00
Alexei Podtelezhnikov dd8676b277 * src/winfonts/winfnt.c (fnt_face_get_dll_font): Trace font resources. 2022-02-03 14:32:50 +00:00
Alexei Podtelezhnikov 8e39e42ee9 [psaux] Revise `PS_Table` handling.
The old impleemntation was not using `FT_REALLOC`, buing too careful
with the offset rebasing.  It shoudl be safe to rely on the base
movements.

* src/psaux/psobjs.c (reallocate_t1_table, shift_elements): Combine
into...
(ps_table_realloc): ... this function based on `FT_REALLOC`.
(ps_table_done): Simplified.
(ps_table_add): Updated.
2022-02-02 11:35:14 -05:00
Alexei Podtelezhnikov c6dd509b99 * src/cache/ftcmru.c (FTC_MruList_New): Explain zeroing. 2022-02-02 11:32:58 -05:00
Alexei Podtelezhnikov 946e1353ea [cache] Partially revert 9870b6c07e.
Fix crashes reported by Werner.

* src/cache/ftcmru.c (FTC_MruList_New): Use `FT_ALLOC` again.
2022-01-31 14:19:07 +00:00
Alexei Podtelezhnikov 983d435865 [cache] Fix fallouts from edd4fedc54.
Reported by Werner.

* src/cache/ftcimage.c (FTC_INode_New): Always initialize FT_Glyph.
* src/cache/ftcsbits.c (FTC_SNode_New): Always initialize FT_SBit.
2022-01-30 22:13:51 -05:00
Alexei Podtelezhnikov bee8886408 Clean-up - do not doubt FT_FREE.
* src/base/ftobjs.c (memory_stream_close): Do not reassign zero
after `FT_FREE`.
* src/sfnt/sfwoff.c (sfnt_stream_close): Ditto.
* src/sfnt/sfwoff2.c (stream_close): Ditto.
* src/psaux/psobjs.c (ps_parser_load_field): Ditto.
* src/truetype/ttgxvar.c (ft_var_load_avar, tt_set_mm_blend,
tt_set_mm_blend): Ditto.
2022-01-30 21:55:21 -05:00
Alexei Podtelezhnikov da877c8693 * src/psaux/psobjs.c (ps_parser_load_field): Reduce `string` scope. 2022-01-29 22:46:56 -05:00
Alexei Podtelezhnikov b34741c1cc Minor clean-ups.
* src/base/ftrfork.c (raccess_make_file_name): Do not set error.
* src/sfnt/sfdriver.c (get_win_string, get_apple_string): Ditto.
* src/cff/cffobjs.c (cff_strcpy): Do not confuse about error.
* src/psaux/psobjs.c (ps_table_done): Ditto.
* src/truetype/ttgxvar.c (ft_var_readpacked*, ft_var_load_avar): Ditto.
2022-01-27 22:55:34 -05:00
Anuj Verma ab1c98ac18 Fix sdf computation while `USE_SQUARED_DISTANCES`.
Function `map_fixed_to_sdf` expects spread to be absolute
and not squared.

* src/sdf/ftbsdf.c (finalize_sdf): Pass absolute spread
while `map_fixed_to_sdf`.

* src/sdf/ftsdf.c (sdf_generate_bounding_box): Ditto.
2022-01-27 18:01:08 +05:30
Tapish Ojha 3d77756e73 [sfnt] Improve sRGB constants.
* src/base/ftbitmap.c (ft_gray_for_premultiplied_srgb_bgra): Use slightly
more precise values.

Fixes #1018.
2022-01-27 08:43:19 +01:00
Alexei Podtelezhnikov 837f0345a9 * src/pfr/pfrload.c (pfr_phy_font_load): Use FT_QNEW_ARRAY. 2022-01-26 15:49:24 -05:00
Alexei Podtelezhnikov 0ac535900b * src/sdf/ftsdf.c (sdf_*_new): Use standard macro. 2022-01-26 14:02:27 -05:00
Alexei Podtelezhnikov 09223ef929 [pcf] Delay encoding allocation and avoid its zeroing.
* src/pcf/pcfread.c (pcf_get_encodings): Refactor and use FT_QNEW_ARRAY.
2022-01-26 11:23:38 -05:00
Ben Wagner 5e9caaee78 [pshinter] Ensure all point flags are initialized.
Only off curve point flags were fully initialized.

* src/pshinter/pshalgo.c (psh_glyph_init): always initialize flags.

Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43930
2022-01-24 12:24:59 -05:00
Werner Lemberg ef48a33271 * src/svg/ftsvg.c (ft_svg_property_set): Disallow NULL pointers. 2022-01-23 19:05:15 +01:00
Werner Lemberg 9c1538525b * src/svg/ftsvg.c: Rename `svg_hooks` to `svg-hooks` for consistency. 2022-01-23 08:56:17 +01:00
Werner Lemberg 112527dd44 [sfnt] Reject malformed SVG tables.
* src/sfnt/ttsvg.c (SVG_TABLE_HEADER_SIZE, SVG_DOCUMENT_RECORD_SIZE,
SVG_DOCUMENT_LIST_MINIMUM_SIZE, SVG_MINIMUM_SIZE): New macros.
(tt_face_load_svg): Check offsets.
Check table and record sizes.

Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43918
2022-01-22 12:09:08 +01:00
Alexei Podtelezhnikov 706c79a1da * src/psaux/psobjs.c (ps_table_new): Revert to zeroing. 2022-01-21 22:46:35 -05:00