Commit Graph

7045 Commits

Author SHA1 Message Date
Alexei Podtelezhnikov ec9e5114b1 [cff,type1,type42] s/FT_ALLOC/FT_QALLOC/ for initialized buffers.
* src/cff/cffload.c (cff_index_get_pointers, cff_index_get_name):
Do not zero out the buffer.
* src/cff/cffdrivr.c (cff_ps_get_font_info): Ditto.
* src/type1/t1load.c (parse_subrs, parse_charstrings,
parse_blend_axis_types): Ditto.
* src/type1/t1parse.c (T1_New_Parser, T1_Get_Private_Dict): Ditto.
* src/type42/t42parse.c (t42_parser_init): Ditto.
2021-04-23 14:03:03 -04:00
Alexei Podtelezhnikov baa0f71ddf [cid] s/FT_ALLOC/FT_QALLOC/ and clean up.
* src/cid/cidgload.c (cid_load_glyph): Do not zero out the buffer.
* src/cid/cidload.c (cid_face_open, cid_read_subrs): Ditto.
2021-04-23 13:48:34 -04:00
Alexei Podtelezhnikov b3438ccb31 [pfr] s/FT_ALLOC/FT_QALLOC/ for initialized buffers.
* src/pfr/pfrload.c (pfr_extra_item_load_font_id, pfr_aux_name_load):
Do not zero out the buffer.
2021-04-23 08:35:02 -04:00
Alexei Podtelezhnikov 1e525c62ae [bzip2,gzip] s/FT_ALLOC/FT_QALLOC/ for initialized buffers.
* src/bzip2/ftbzip2.c (ft_bzip2_alloc): Do not zero out the buffer.
* src/gzip/ftgzip.c (ft_gzip_alloc, FT_Stream_OpenGzip): Ditto.
2021-04-23 08:24:22 -04:00
Alexei Podtelezhnikov a0fb6dbcd9 [pcf,bdf,winfonts] s/FT_ALLOC/FT_QALLOC/ for initialized buffers.
* src/pcf/pcfread.c (pcf_interpret_style): Do not zero out the buffer.
* src/bdf/bdfdrivr.c (bdf_interpret_style): Ditto.
* src/winfonts/winfnt.c (FNT_Face_Init, FNT_Load_Glyph): Ditto.
2021-04-23 00:05:18 -04:00
Alexei Podtelezhnikov 23f85c8a98 [cache] Optimize SBit copying.
* src/cache/ftcsbits.c (ftc_snode_load): Do not initialize the buffer.
(ftc_sbit_copy_bitmap): Accept zero size, s/FT_ALLOC/FT_QALLOC/.
2021-04-22 23:34:08 -04:00
Alexei Podtelezhnikov 93715ab2c4 [gxvalid,otvalid] s/FT_ALLOC/FT_QALLOC/ for initialized buffers.
* src/gxvalid/gxvmod.c (gxv_load_table): Do not zero out the buffer.
* src/otvalid/otvmod.c (otv_load_table): Ditto.
2021-04-22 23:07:01 -04:00
Alexei Podtelezhnikov 90b97a833d [psaux] s/FT_ALLOC/FT_QALLOC/ for initialized buffers.
* src/psaux/psobjs.c (ps_table_done, ps_parser_load_field): Do not
zero out the buffer.
2021-04-22 23:00:40 -04:00
Alexei Podtelezhnikov 44b1ebe514 [base] s/FT_ALLOC/FT_QALLOC/ for initialized buffers.
* src/base/ftobjs.c (open_face_PS_from_sfnt_stream,
Mac_Read_sfnt_Resource): Do not zero out the buffer.
* src/base/ftmac.c (FT_New_Face_From_SFNT, read_lwfn): Ditto.
* src/base/ftrfork.c (raccess_make_file_name,
raccess_guess_darwin_hfsplus, raccess_guess_darwin_newvfs): Ditto.
2021-04-22 22:34:05 -04:00
Alexei Podtelezhnikov 8a459e5172 [cache] Restore SBit copying for unowned (BDF) bitmaps.
* src/cache/ftcsbits.c (ftc_sbit_copy_bitmap): Restore.
(ftc_snode_load): Check ownership and copy unowned bitmaps.
2021-04-20 22:53:13 -04:00
Alexei Podtelezhnikov 361465dec9 Bitmap tracing. 2021-04-20 22:31:28 -04:00
Dominik Röttsches e662a9500f [sfnt] Return in 'COLR' v1 when layer pointer outside table
* src/sfnt/ttcolr.c (tt_face_get_paint_layers): Add missing return
when paint pointer outside table.
(read_paint): Add missing return when paint pointer outside table.
2021-04-19 12:49:16 +03:00
Alexei Podtelezhnikov 7c685cb3f6 [cache] Switch to lazy SBit setting.
* src/cache/ftcsbits.c (ftc_sbit_copy_bitmap): Removed.
(ftc_snode_load): Take the bitmap ownership instead of copying.
2021-04-18 22:31:13 -04:00
Alexei Podtelezhnikov 02dec61731 Typo. 2021-04-18 10:24:31 -04:00
Daniel Welty 2e68785e08 * src/cache/ftcsbits.c (ftc_snode_load): Properly handle short pitch. 2021-04-17 09:00:40 -04:00
Werner Lemberg 6f6ad87638 * builds/unix/freetype2.m4: Fix help string formatting.
The indented `dnl` macros inserted unwanted horizontal space.

Problem reported by Ozkan Sezer <sezeroz@gmail.com>.
2021-04-16 20:50:27 +02:00
Dominik Röttsches 7f8a1edd3a [sfnt] Safeguard 'COLR' v1 layer extraction
* src/sfnt/ttcolr.c (tt_face_get_paint_layers): Do not output
layer pointer to iterator if it is outside the 'COLR' table.
(read_paint): Do not attempt to read layers that are outside the
table.
2021-04-16 12:41:58 +03:00
Alexei Podtelezhnikov b9b74f9f78 A few words on prerequisites. 2021-04-10 23:32:20 -04:00
Ben Wagner f9350be1e4 [base] Complete `ft_glyphslot_clear`.
* src/base/ftobjs.c (ft_glyphslot_clear): This function is intended
to reset all the values of a glyph slot.  However, it was not
resetting the values of the advances and `glyph_index`.  Reset the
advances and `glyph_index` to zero.
2021-04-02 11:09:01 +02:00
Ben Wagner 52f2a008f1 Update TT_New_Context documentation
In commit 531d463aed

  [truetype] Allocate TT_ExecContext in TT_Size instead of TT_Driver.

the `TT_ExecContext` was moved from being on the driver to being on the size
to make it easier to use FreeType in a multi-threaded environment.  However,
the documentation for `TT_New_Context` was not updated and still reflects
the old behavior and parameter list.

This change updates `TT_New_Context` documentation to reflect the current
parameters and usage.
2021-04-02 11:01:12 +02:00
Ben Wagner 369d8be97f [truetype] Prevent glyph program state from persisting.
`FDEF` instructions are specified as allowed only in 'prep' or
'fpgm'.  FreeType has attempted to prevent their use in the glyph
program, but they were still allowed in glyph programs if defined in
a function defined in 'prep' or 'fpgm' and called from the glyph
program.

Similarly, `IDEF` instructions are specified not to be able to
modify any existing instruction.  FreeType has attempted to prevent
their use in the glyph program, but they can still be used like
`FDEF`.

This change stores the initial bytecode range type and disallows the
use of `FDEF` and `IDEF` while running the glyph program.

Most other state is copied from the `TT_Size` into the execution
context.  However, it is possible for a glyph program to use `WS` to
write to the storage area or `WCVTP`, `WCVTF`, and `DELTAC[123]` to
write to the control value table.

Allowing any change to the global state from the glyph program is
problematic as the outlines of any given glyph may change based on
the order the glyphs are loaded or even how many times they are
loaded.  There exist fonts that write to the storage area or the
control value table in the glyph program, so their use should not be
an error.

Possible solutions to using these in the glyph program are

  * ignore the writes;
  * value-level copy on write, discard modified values when finished;
  * array-level copy on write, discard the copy when finished;
  * array-level copy up-front.

Ignoring the writes may break otherwise good uses.  A full copy
up-front was implemented, but was quite heavy as even well behaved
fonts required a full copy and the memory management that goes along
with it.  Value-level copy on write could use less memory but
requires a great deal more record keeping and complexity.  This
change implements array-level copy on write.  If any attempt is made
to write to the control value table or the storage area when the
initial bytecode range was in a glyph program, the relevant array
will be copied to a designated storage area and the copy used for
the rest of the glyph program's execution.

* src/truetype/ttinterp.h (TT_ExecContextRec): New fields
`iniRange`, `glyfCvtSize`, `glyfCvt`, `origCvt`, `glyfStoreSize`,
`glyfStorage`, and `origStorage`.

* src/truetype/ttinterp.c (Modify_CVT_Check): New function to handle
`exc->glyfCvt`.
(Write_CVT, Write_CVT_Stretched, Move_CVT, Move_CVT_Stretched): Use
it.
(Ins_WS): Handle `exc->glyfStorage`.
(Ins_FDEF, Ins_IDEF): Updated.
(TT_RunIns): Updated.
(TT_Done_Context): Free 'glyf' CVT working and storage area.
(TT_Load_Context): Fix/add casts.

* src/truetype/ttgload.c (TT_Load_Simple_Glyph): Fix cast.
2021-04-02 10:31:39 +02:00
Dominik Röttsches 1c0862938d [sfnt] Check validity of pointer location of `read_color_line`.
* src/sfnt/ttcolr.c (get_child_table_pointer): New function to fetch
child table pointer early for all paint formats that compute a child
table pointer.
(read_color_line, read_paint): Updated.
(tt_face_get_colorline_stops): Check `colr->table`.
2021-04-02 07:09:47 +02:00
nikramakrishnan c1e1a07f79 [docs] Update docwriter stylesheet for 1.3.1.
This change is required to support docwriter 1.3.1.

See

  https://gitlab.freedesktop.org/freetype/docwriter/-/merge_requests/101

for more information.

* docs/markdown/stylesheets/extra.css:
(.wy-nav-content, .md-sidebar--secondary): Remove.
2021-03-28 15:07:05 +05:30
Alexei Podtelezhnikov e9c50fa77d * src/sfnt/pngshim.c (Load_SBit_Png): Free `rows` once later. 2021-03-16 22:12:41 -04:00
Ben Wagner b0729b8fbb [sfnt] Fix memory leak in png loading.
Reported as

  https://bugs.chromium.org/p/chromium/issues/detail?id=1182552

Memory is allocated and the pointer assigned to `rows` inside a
'setjmp' scope.  This memory must be freed outside the 'setjmp'
scope after a 'longjmp'.  Since `rows` is a local and modified
inside the 'setjmp' scope it must be marked volatile or it will have
an indeterminate value after the 'longjmp'.

* src/sfnt/pngshim.c (Load_SBit_Png): Fix memory leak of `rows`.
2021-03-16 08:47:45 +01:00
Christopher Degawa 66005cbae1 * CMakeLists.txt: Don't limit generation of 'pkg-config' file to UNIX.
mingw-w64 uses the 'pkg-config' files but does not set UNIX.
2021-03-16 08:36:54 +01:00
Werner Lemberg 1578e570cd README.git: Document cloning of official site and Savannah mirror. 2021-03-16 06:59:01 +01:00
Alexei Podtelezhnikov fb9bf2efae * src/smooth/ftgrays.c (gray_set_cell): Refactor to fix VC++ warning. 2021-03-15 22:33:17 -04:00
Werner Lemberg 2149b51f25 Handle various VC++ compiler warnings.
Fixes #1039.

* src/base/ftstroke.c (ft_stroker_inside, ft_stroker_outside):
Initialize `sigma`.

* src/sdf/ftsdf.c (sdf_generate_with_overlaps): Exit immediately if
function arguments are invalid.
* src/sdf/ftsdfrend.c (sdf_property_set) <"overlaps">: Fix cast.

* src/sfnt/sfwoff2.c (woff2_decompress)
[!FT_CONFIG_OPTION_USE_BROTLI]: Use `FT_UNUSED`.

* src/truetype/ttgxvar.c (TT_Get_MM_Var): Initialize `fvar_head`.
2021-03-13 19:08:09 +01:00
Alexei Podtelezhnikov 80bda804d5 [smooth] Reduce copying during integration phase.
We now record `cover' and `area' directly into the linked list. This
makes rendering faster by 10% or even more at larger sizes.

* src/smooth/ftgrays.c (FT_INTEGRATE): Write directly.
(gray_TWorker): Add direct cell reference and remove unused fields.
(gray_set_cell): Consolidate the linked list management and pointers.
(gray_convert_glyph, gray_convert_glyph_inner): Updated.
2021-03-11 22:40:19 -05:00
Alexei Podtelezhnikov d5b7de5541 * src/smooth/ftgrays.c (FT_INTEGRATE): New convenience macro.
(gray_render_line, gray_render_scanline): Use it.
2021-03-11 22:08:45 -05:00
Alexei Podtelezhnikov 8516849977 * src/smooth/ftgrays.c (gray_render_line): Rearrange conditionals.
These produce faster or more optimizable code.
2021-03-09 22:14:44 -05:00
Werner Lemberg fedd945c3e meson.build: Minor formatting. 2021-03-08 10:30:57 +01:00
Tim-Philipp Müller 7252e35ed2 [meson] Fix 'mmap' handling on Windows.
* meson.build (ft2_sources): Always use `windows/ftsystem.c` on
Windows unless mmap has been disabled.

  https://gitlab.freedesktop.org/freetype/freetype/-/merge_requests/5#note_829289
2021-03-08 10:24:07 +01:00
Tim-Philipp Müller e222932810 [ci] Add basic support for Meson builds with MSVC on Windows.
This adds meson jobs for VS2017 (x86 and x86_64).

* .gitlab-ci.yml: New file.
2021-03-07 18:01:31 +01:00
Tim-Philipp Müller bb42afbda0 [meson] Add subproject fallbacks for 'libpng' and 'zlib'.
* subprojects/libpng.wrap, subprojects/zlib.wrap: New files.

* meson.build: Updated.
2021-03-07 17:54:21 +01:00
Xavier Claessens d69d9c2397 [meson] Make it work with Windows.
* meson.build: Do not process `ftconfig.h` when not using
`ftconfig.h.in`.

Fixes #1029.
2021-03-07 17:48:15 +01:00
Werner Lemberg 7227aabb3e Revert "[sfnt] Fix crash in `Load_SBit_Png` on Windows x64."
This reverts commit dbf9142f7e, as discussed
in #1037.
2021-03-04 06:41:30 +01:00
Jesse Towner dbf9142f7e [sfnt] Fix crash in `Load_SBit_Png` on Windows x64.
This change fixes a crash that occurs in `Load_SBit_Png` when
running on a 64-bit Windows OS.  A memory access violation exception
would be raised by `setjmp` if the `jmp_buf` is not aligned to a
16-byte memory boundary.  This is due to setjmp executing `movdqa`
instructions to store 128-bit XMM registers to memory, which require
correct memory alignment.  This problem occurs because
`png_create_read_struct` uses `malloc` and `free` for memory
management, which only guarantees 8-byte alignment on Windows.

Instead, to fix the problem, `png_create_read_struct_2` is used on
64-bit Windows, which allows for user-defined memory allocation and
deallocation callbacks to be specified.  These callbacks forward the
allocation and deallocation requests to `_aligned_alloc` and
`_aligned_free`, ensuring that the allocated `png_struct` and
internal `jmp_buf` have the requisite 16-byte alignment.

* src/sfnt/pngshim.c <_WIN64>: Include `malloc.h`.
(malloc_callback, free_callback) <_WIN64>: New functions.
(Load_SBit_Png) <_WIN64>: Use `png_create_read_struct_2` instead of
`png_create_read_struct`
2021-02-27 13:28:13 +01:00
Werner Lemberg f7d7e7f9f7 freetype.h: Documentation typos. 2021-02-27 12:14:02 +01:00
Werner Lemberg ff34ea8eda Improve build documentation.
Fixes #1012.
2021-02-27 11:02:53 +01:00
Werner Lemberg e1f364e509 [woff2] Fix memory leak.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28148

* src/sfnt/sfwoff2.c (woff2_open_font): Reject fonts that have
multiple tables with the same tag.  While not explicitly forbidden
in the OpenType specification, it is implicitly forbidden by
describing a binary search algorithm for tables that only works
reliably if table tags are unique.
2021-02-25 20:00:07 +01:00
Werner Lemberg df7fcafe6e * CMakeLists.txt: Update location of `LICENSE.TXT`.
Fixes #1035.
2021-02-22 15:33:23 +01:00
Werner Lemberg 111f2f27b5 * builds/unix/ax_pthread.m4: Update from 'autoconf-archive'.
A bunch of fixes were added recently to its git repository.
2021-02-19 20:33:50 +01:00
Werner Lemberg eca35e04fc [unix] Updates for autoconf 2.71.
This fixes warnings reported by autoupdate.

* builds/unix/ax_pthread.m4: Replace `as_echo` with `AS_ECHO`.

* builds/unix/configure.raw: Remove obsolete `AC_HEADER_STDC`.
Don't escape back quotes in messages for `AC_MSG_WARN`.
2021-02-17 21:10:34 +01:00
Werner Lemberg 635d394fe3 * builds/toplevel.mk: Fix previous commit.
<top_level>: Use `TOP_DIR` in `wildcard` function.
(check_out_submodule, copy_submodule): Move down to come after
definition of `all` rule.
Call `mkdir` conditionally.
2021-02-16 19:24:15 +01:00
Werner Lemberg c3a0b43ec6 * builds/toplevel.mk: Use rules for handling 'dlg'.
Suggested by Alexei.

(check_out_submodule, copy_submodule): New targets.
<top-level>: Replace calls to `shell` with rules.
2021-02-16 17:04:51 +01:00
Werner Lemberg dfa7cca5f3 * builds/toplevel.mk: Avoid side effects of `shell`.
We use a dummy variable to catch its output.  Otherwise the `make`
program is going to interpret the return value of `shell`; this can
cause obscure warning or error messages or even be harmful.
2021-02-16 14:29:45 +01:00
Werner Lemberg 92bd99bd25 Move 'dlg' submodule to `subprojects` directory.
This is for future changes with Meson, which doesn't allow a
different name for its `subprojects` directory.  Having both a
`submodules` and a `subprojects` directory is confusing.

* .gitmodules, autogen.sh (copy_submodule_files, DLG_INC_DIR,
DLG_SRC_DIR): Updated.

* builds/toplevel.mk (<top-level>, do-dist),
builds/windows/vc2010/script.bat: Updated.

* src/tools/no-copyright: Updated.
2021-02-16 14:07:18 +01:00
Dominik Röttsches 215ae25330 [sfnt] Update paint format values to support non-variable paints.
* freetype.h (FT_PaintFormat): Update paint format identifiers after
a specification change.  The specification was updated to have
sibling formats, variable and non-variable variants for each.
Reflect that here.

* sfnt/ttcolr.c (read_paint): Remove parsing of variable indices as
the non-variable formats no longer have them.
2021-02-16 13:15:41 +01:00