Commit Graph

3669 Commits

Author SHA1 Message Date
Alexei Podtelezhnikov 495de6cc72 [base] Refuse to render enormous outlines (#47114).
The goal is to avoid integer overflows in the rendering algorithms.
The limit is chosen arbitrarily at some 2^18 pixels, which should be
enough for modern devices including printers.

* src/base/ftoutln.c (FT_Outline_Render): Check CBox and reject
enormous outlines.
2016-03-06 23:54:34 -05:00
Alexei Podtelezhnikov d0b0e31ed7 [smooth] Replace left shifts with multiplications (#47114).
* src/smooth/ftgrays.c (SUBPIXELS, UPSCALE, DOWNSCALE): Do it.
2016-03-06 23:01:50 -05:00
Werner Lemberg caa48b0db1 [autofit] Avoid excessive stem length rounding (#25392).
* src/autofit/aflatin.c (af_latin_compute_stem_width): Add argument
to pass difference between hinted and unhinted position of base
point; use this to adjust the stem width depending on the PPEM so
that it doesn't become too large under certain circumstances.
Update all callers using value 0 for this argument except...
(af_latin_align_linked_edge): Pass position delta of base point to
`af_latin_compute_stem_width'.
2016-03-05 19:47:07 +01:00
J Raynor 1fd2bc8c37 Make FreeType compile on AIX out of the box.
* builds/unix/configure.raw (XX_ANSIFLAGS): Don't use `-ansi' on
AIX.
2016-03-05 16:38:35 +01:00
Werner Lemberg a8b956227b [ftfuzzer] Add unit for testing smooth and black rasterizers.
* src/tools/ftfuzzer/rasterfuzzer.cc: New file.
2016-03-01 09:37:12 +01:00
Werner Lemberg 3eb6f66a37 [autofit] Fix reallocation error introduced in 2016-02-27 (#47310).
* src/autofit/aflatin.c (af_latin_hints_compute_segments): Reassign
`prev_segment' after reallocation.
2016-03-01 07:10:30 +01:00
Werner Lemberg 015c6e08a1 Fix clang warnings.
* src/autofit/aflatin.c (af_latin_hints_compute_segments): Use
FT_UShort for `min_flags' and `max_flags'.
Initialize `prev_*' variables.

* src/cff/cffobjs.c (cff_face_init) [FT_DEBUG_LEVEL_TRACE]: Fix
types of local variables.

* src/smooth/ftgrays.c (gray_dump_cells) [FT_DEBUG_LEVEL_TRACE]:
Update `printf' format string.

* src/tools/ftfuzzer/ftfuzzer.cc (setIntermediateAxis): Add cast.
(LLVMFuzzerTestOneInput): Fix loop type.
2016-03-01 06:45:52 +01:00
Werner Lemberg 5c7646d226 [autofit] Add blue-zone support for Sinhala script.
This essentially moves the Sinhala script from the `Indic' hinter to
the `Latin' hinter.

* src/autofit/afblue.dat: Add blue zone data for Sinhala.

* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Sinhala standard character and move data
out of AF_CONFIG_OPTION_INDIC block.

* src/autofit/afranges.c: Move Sinhala data out of
AF_CONFIG_OPTION_INDIC block.

* src/autofit/afstyles.h: Update Sinhala data; in particular, use
AF_WRITING_SYSTEM_LATIN.
2016-02-29 09:12:35 +01:00
Werner Lemberg f216947813 [autofit] Properly handle spikes pointing to the x-axis.
An example that gets better rendered is glyph `uusignTaml' (glyph
index 2286) in font `FreeSerif.ttf' (Version 0412.2263) at 22ppem.

* src/autofit/aflatin.c (af_latin_hints_compute_segments): Properly
handle segments where the last point of the first segment is
identical to the first point in the second one.  This can happen for
malformed fonts or spikes.  We either merge the new segment with the
previous one (both segments point into the same direction), or we
discard the shorter segment if they point into different directions.
2016-02-28 22:48:34 +01:00
Werner Lemberg ce48664579 [autofit] Minor code clean-up.
* src/autofit/aflatin.c (af_latin_hints_compute_segments): Change
some local variable names to better differentiate between values
along a segment and values orthogonal to it.
2016-02-27 15:01:49 +01:00
Werner Lemberg ebfd7ce52f [autofit] Improve BOUND action.
In complex glyph shapes, the original logic was too simple to cater
for situations that would actually need something similar to PS Hint
masks.  This fix should alleviate the worst cases.

* src/autofit/aflatin.c (af_latin_hint_edges): Don't allow
complete disappearance of stems.
2016-02-26 08:10:41 +01:00
Werner Lemberg 44324b3746 [autofit] Add blue-zone support for Tamil script.
This essentially moves the Tamil script from the `Indic' hinter to
the `Latin' hinter.

* src/autofit/afblue.dat: Add blue zone data for Tamil.

* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Tamli standard character and move data
out of AF_CONFIG_OPTION_INDIC block.

* src/autofit/afranges.c: Move Tamil data out of
AF_CONFIG_OPTION_INDIC block.

* src/autofit/afstyles.h: Update Tamil data; in particular, use
AF_WRITING_SYSTEM_LATIN.
2016-02-25 06:58:47 +01:00
Werner Lemberg a5952d3049 [autofit] Add blue-zone support for Malayalam script.
This essentially moves the Malayalam script from the `Indic' hinter
to the `Latin' hinter.

* src/autofit/afblue.dat: Add blue zone data for Malayalam.

* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Malayalam standard characters and move
data out of AF_CONFIG_OPTION_INDIC block.

* src/autofit/afranges.c: Move Malayalam data out of
AF_CONFIG_OPTION_INDIC block.

* src/autofit/afstyles.h: Update Malayalam data; in particular, use
AF_WRITING_SYSTEM_LATIN.
2016-02-18 12:56:38 +01:00
Alexei Podtelezhnikov 08e89b734c [smooth] Fix integer overflow (#47114).
* src/smooth/ftgrays.c (TArea): Make it unconditionally `long'.
2016-02-16 22:32:13 -05:00
Werner Lemberg 3a5e507838 * src/cff/cffparse.c (cff_parse_multiple_master): Improve tracing. 2016-02-15 22:21:01 +01:00
Werner Lemberg 2873010d15 [cff] Handle T2 operator only with old CFF engine (#47157).
* src/cff/cffparse.c (cff_parser_run) <opcode 31>: Enclose with
2016-02-15 20:53:22 +01:00
Werner Lemberg 8ed9eaf1cc [cff] Partially handle `load' and `store' ops in old CFF engine.
Now all glyphs of MM CFFs like `ITCGaramondMM-It.otf' can be
displayed.

* src/cff/cffgload.c (cff_decoder_parse_charstrings) <cff_op_store,
cff_op_load>: Partially implement it.

* src/cff/cffparse.c (cff_parser_init): Add new parameter to pass
the number of Multiple Master axes.
Update all callers.
(cff_parse_multiple_master): Get number of axes.
(cff_parser_run) <opcode 31>: Updated.
* src/cff/cffparse.h: Updated.
(CFF_ParserRec): Add `num_axes' field.

* src/cff/cffload.c: Updated.

* src/cff/cfftypes.h (CFF_FontRecDictRec): Add `num_axes' field.
2016-02-15 20:41:58 +01:00
Werner Lemberg 658f530ef5 [cff] Correctly trace SIDs that contain NULL bytes.
We need this to properly trace Multiple Master CFFs, which contain
two SIDs that are charstrings.

This commit makes FreeType also show the last SID, omitted
previously due to a bug.

* src/cff/cfftypes.h (CFF_FontRec): Add `string_pool_size' field.

* src/cff/cffload.c (cff_index_get_pointers): Add argument to return
the pool size.
Update all callers.

* src/cff/cffobjs.c (cff_face_init) [FT_DEBUG_LEVEL_TRACE]: Directly
access `cff->strings' to display the non-default strings.
2016-02-15 14:28:28 +01:00
Werner Lemberg e411d38e71 * src/base/fthash.c: Include FT_INTERNAL_MEMORY_H. 2016-02-14 20:48:59 +01:00
Werner Lemberg dc5b2e828c * src/cff/cffparse.c: Include `cffgload.h'.
Problem reported by Colin Walters <walters@verbum.org>.
2016-02-14 20:47:28 +01:00
Werner Lemberg 813aca51d2 [cff] Make old CFF engine show MM CFFs (without variations).
The new code only displays the first master in the font.

* src/cff/cffgload.c (cff_decode_parse_charstrings): Add new
parameter to allow function calls from dictionaries also.
<cff_op_blend>: Partially implement it.
Update all callers.
* src/cff/cffgload.h: Updated.

* src/cff/cffparse.c (cff_parser_init): Add new parameter to pass the
number of Multiple Master designs.
Update all callers.
(cff_parse_multiple_master): New function to rudimentarily parse
operator.
(cff_parser_run): Handle `T2' operator.
* src/cff/cffparse.h: Updated.
(CFF_ParserRec): Add `num_designs' field.

* src/cff/cffload.c: Updated.

* src/cff/cfftoken.h: Handle `MultipleMaster' operator.

* src/cff/cfftypes.h (CFF_FontRecDictRec): Add `num_designs' field.

* src/sfnt/sfobjs.c (sfnt_init_face): Don't handle `fvar' table for
MM CFFs.
2016-02-14 16:03:15 +01:00
Werner Lemberg 4b3ea5ca8f [docmaker] Don't emit trailing newlines.
* src/tools/docmaker/tohtml.py (HtmlFormatter::make_html_code):
Use `rstrip'.
2016-02-09 08:08:17 +01:00
Werner Lemberg 44accb9e2e Version 2.6.3 released. 2016-02-08 19:51:40 +01:00
Werner Lemberg 78371bd641 Fix another runtime error found by clang's sanitizer (#47082).
* src/base/ftstroke.c (ft_stroke_border_export): Properly handle
empty input buffer.
2016-02-07 21:06:59 +01:00
Werner Lemberg 0d053bac84 Fix runtime errors found by clang's sanitizer (#47082).
* src/base/ftobjs.c (FT_Render_Glyph_Internal), src/base/ftoutln.c
(FT_Outline_Copy), src/cache/ftcsbits.c (ftc_sbit_copy_bitmap):
Properly handle empty input buffer.
2016-02-07 19:25:56 +01:00
Werner Lemberg a1460704d9 [cff] Minor.
* src/cff/cffgload.c (cff_decoder_parse_charstrings) <cff_op_sqrt>:
Remove dead code.
2016-02-07 11:42:37 +01:00
Werner Lemberg 950f16969e [cff] Implement missing operators in new engine (except `random').
* src/cff/cf2font.h (CF2_STORAGE_SIZE): New macro.

* src/cff/cf2intrp.c (cf2_interpT2CharString): Implement the
following operators: abs, add, and, div, drop, dup, eq, exch, get,
ifelse, index, mul, neg, not, or, put, roll, sqrt, sub.

* src/cff/cf2stack.h, src/cff/cf2stack.c (cf2_stack_roll): New
auxiliary function for `roll' operator.
2016-02-07 11:39:54 +01:00
Werner Lemberg 5c8a8cb54c [cff] Fix some Type 2 operators in old CFF engine.
* src/cff/cffgload.c (cff_decoder_parse_charstrings): Fix `eq'
operator, add `not' and (unsupported) `blend' operators.
2016-02-06 08:03:03 +01:00
Sebastian Rasmussen ae7c55d98e Make direct call of `make install' work (#47072).
* builds/unix/unix-def.in (freetype-config): Make sure
`freetype-config' is generated for both make targets (`all' and
`install').
2016-02-05 18:42:19 +01:00
Werner Lemberg 710ac3dda0 [base] Fix advance width loading for MM and GX fonts (#47064).
* src/base/ftadvanc.c (LOAD_ADVANCE_FAST_CHECK): Return false for
MM and GX fonts.
Update callers.
2016-02-05 12:47:29 +01:00
Werner Lemberg cd346da588 [cff] Fix handling of face_index == -1 for pure CFF.
* src/cff/cffobjs.c (cff_face_init): Return correct number of faces.
2016-02-03 19:32:03 +01:00
Werner Lemberg baa41ff204 [autofit] Minor tracing improvement.
* src/autofit/afhints.c (af_glyph_hints_dump_points): Insert newline
at the start of a new contour.
2016-01-30 07:44:30 +01:00
Nikolaus Waxweiler 1d8d0b4ef9 Remove unpatented hinter (3/3).
* include/freetype/config/ftoption.h
(TT_CONFIG_OPTION_UNPATENTED_HINTING): Remove.

* include/freetype/internal/ftobjs.h (FT_Face_InternalRec): Remove
`ignore_unpatented_hinter' field.
Update users.
(FT_DEBUG_HOOK_UNPATENTED_HINTING): Remove.
Update users.

* include/freetype/internal/tttypes.h (TT_FaceRec): Remove
`unpatented_hinting' field.
Update users.

* src/base/ftpatent.c (_tt_check_patents_in_range,
_tt_check_patents_in_table, _tt_face_check_patents): Remove.
(FT_Face_CheckTrueTypePatents, FT_Face_SetUnpatentedHinting):
Replace code with dummies.

* src/truetype/ttobjs.c (tt_face_init): Remove now defunct code.
* src/truetype/ttobjs.h (TT_GraphicsState): Remove `both_x_axis'
field.
2016-01-28 14:11:14 +01:00
Nikolaus Waxweiler 5b7871be12 Remove unpatented hinter (2/3).
* devel/ftoption.h (TT_CONFIG_OPTION_UNPATENTED_HINTING): Remove.
2016-01-28 12:27:46 +01:00
Nikolaus Waxweiler 6875093a17 Remove unpatented hinter (1/3).
* src/truetype/ttinterp.c [TT_CONFIG_OPTION_UNPATENTED_HINTING]:
Remove all code related to this macro.
2016-01-28 12:24:36 +01:00
Werner Lemberg 8d810097fd [autofit] Add blue-zone support for Kannada script.
This essentially moves the Kannada script from the `Indic' hinter to
the `Latin' hinter.

* src/autofit/afblue.dat: Add blue zone data for Kannada.

* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Kannada standard characters and move
data out of AF_CONFIG_OPTION_INDIC block.

* src/autofit/afranges.c: Move Kannada data out of
AF_CONFIG_OPTION_INDIC block.

* src/autofit/afstyles.h: Update Kannada data; in particular, use
AF_WRITING_SYSTEM_LATIN.
2016-01-28 10:13:24 +01:00
Alexei Podtelezhnikov e4c69d226c Better access to 64-bit integers for C99 compilers.
* include/freetype/config/ftconfig.h [FT_LONG64]: Use
__STDC_VERSION__ to define 64-bit integers.
* builds/unix/ftconfig.in [FT_LONG64]: Ditto.
* builds/vms/ftconfig.h [FT_LONG64]: Ditto.
2016-01-22 23:35:49 -05:00
Werner Lemberg fc4523bd00 [gxvalid] Remove commented out code.
* src/gxvalid/gxvcommn.c (gxv_EntryTable_validate): Do it.
2016-01-21 06:20:20 +01:00
Werner Lemberg fb672897f8 [autofix] Complete last autofit commit.
Problem reported by Kostya Serebryany <kcc@google.com>.

* src/autofit/afshaper.c (af_shaper_get_coverage)
[!FT_CONFIG_OPTION_USE_HARFBUZZ]: Update signature.
2016-01-20 21:13:16 +01:00
Werner Lemberg 24fbed052f Still handle `__FTERRORS_H__'.
We need this for backwards compatibility.

Problem reported by John Emmas <johne53@tiscali.co.uk>.

* include/freetype/fterrors.h: Fix inclusion guard so that
undefining either `FTERRORS_H_' or `__FTERRORS_H__' works as
expected.
2016-01-20 21:10:41 +01:00
Werner Lemberg ec776596ce [autofit] Fix handling of default script.
Patch taken from ttfautohint, commit
071ae2c00e0d67f9d19418f4fade1c23d27dc185.

There were two bugs.

  - We now use non-standard script tags like `khms' for special
    purposes.  However, HarfBuzz maps such tags to `DFLT', and
    without this commit the associated lookups were incorrectly
    assigned to the non-standard tags.

  - Let's assume we have a Bengali font, and the font's `DFLT'
    script tag handles the necessary lookups for Bengali, too.
    Without this commit, the `DFLT' lookups were assigned to
    ttfautohint's default script (usually `latn') before the
    standard lookups for Bengali were handled.

    We now have the following order while searching for covered
    glyph indices.

      special features of scripts (e.g. `sups' for Cyrillic)
      Unicode mappings of scripts
      remaining features of scripts (especially important for Indic
        scripts)
      default features of default script

* src/autofit/afshaper.c, src/autofit/afshaper.h
(af_shaper_get_coverage): Add boolean parameter to indicate default
script.
Update all callers.

* src/autofit/afglobal.c (af_face_globals_compute_style_coverage):
Fix search order for coverages.
2016-01-19 19:33:57 +01:00
Werner Lemberg fc11af1ea2 Various minor clang fixes.
* src/autofit/afcjk.c (af_cjk_metrics_init_widths),
src/autofit/aflatin.c (af_latin_metrics_init_widths): Initialize
`ch'.

* src/base/ftcalc.c (FT_MulFix) [FT_LONG64]: Add cast.

* src/base/ftdbgmem.c (ft_mem_table_destroy): Add cast.

* src/base/fthash.c (hash_num_lookup): Add cast.

* src/base/fttrigon.c (ft_trig_downscale) [FT_LONG64]: Fix cast.

* src/gxvalid/gxvcommn.c (gxv_EntryTable_validate): Comment out
redundant code.

* src/type1/t1driver.c (t1_get_ps_font_value) <PS_DICT_SUBR>: Add
cast.

* src/type1/t1load.c (parse_subrs): Fix type of `count'.
2016-01-19 19:15:54 +01:00
Derek B. Noonburg 4cdfefd4bd [truetype] Add another tricky font.
* src/truetype/ttobjs.c (TRICK_SFNT_IDS_NUM_FACES): Increase.
(sfnt_id): Add variant of `DFKaiShu'.
2016-01-19 07:12:44 +01:00
Alexei Podtelezhnikov 32760d33d0 [base] Empower `FT_Library_SetLcdFilterWeights'.
* src/base/ftlcdfil.c (FT_Library_SetLcdFilterWeights): Enable filter
in addition to setting weights.
(FT_Library_SetLcdFilter): Clean out FT_FORCE_LIGHT_LCD_FILTER and
FT_FORCE_LEGACY_LCD_FILTER.
* include/freetype/ftlcdfil.h: Documentation update.
2016-01-14 23:31:08 -05:00
Werner Lemberg 9adeab6452 Update copyright year. 2016-01-13 11:54:10 +01:00
Werner Lemberg c09a90a2f1 Don't use macro names that start with `_[A-Z]' [3/3].
Such macro names are reserved for both C and C++.

* src/cache/ftccache.h: s/_FTC_FACE_ID_HASH/FTC_FACE_ID_HASH/.
Update all callers.
(FTC_CACHE_LOOKUP_CMP): Replace `_XXX' with `XXX_'.
* src/cache/ftcmru.c (FTC_MRULIST_LOOKUP_CMP): Ditto.
2016-01-12 22:28:14 +01:00
Werner Lemberg 9d0b76d7f6 Don't use macro names that start with `_[A-Z]' [2/3].
Such macro names are reserved for both C and C++.

* include/freetype/ftimage.h, src/raster/ftraster.c,
src/smooth/ftgrays.c, src/smooth/ftgrays.h:
s/_STANDALONE_/STANDALONE_/.
2016-01-12 22:27:29 +01:00
Werner Lemberg 758587dbdb Don't use macro names that start with `_[A-Z]' [1/3].
Such macro names are reserved for both C and C++.

* src/bdf/bdflib.c: Replace macros of the form `_BDF_XXX' with
`BDF_XXX_'.
2016-01-12 22:20:06 +01:00
Werner Lemberg 2e9d2660b3 Don't use macro names that contain `__' [2/2].
Such macro names are reserved for both C and C++.

* src/cache/*: s/__/_/.
2016-01-12 21:40:53 +01:00
Werner Lemberg 37412ff9f4 Don't use macro names that contain `__' [1/2].
Such macro names are reserved for both C and C++.

*/*: Replace macros of the form `__XXX_H__' with `XXX_H_'.
2016-01-12 21:37:13 +01:00