Commit Graph

4147 Commits

Author SHA1 Message Date
Werner Lemberg 4a62922bf8 src/truetype/ttgxvar.[ch]: s/avar_checked/avar_loaded/. 2017-03-12 10:19:53 +01:00
Werner Lemberg 7bbb91fbf4 [sfnt] Another fix for buggy variation fonts.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=759

* src/sfnt/sfobjs.c (sfnt_init_face): While setting number of
instances to zero for `CFF' fonts table, ensure that there is no
`CFF2' present also (which gets priority).
2017-03-08 15:10:19 +01:00
Alexei Podtelezhnikov 7d7aae1de3 Typos. 2017-03-07 22:21:26 -05:00
Werner Lemberg 7793097442 [sfnt] Improve handling for buggy variation fonts.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=738

* src/sfnt/sfobjs.c (sfnt_init_face): While setting number of
instances to zero for `CFF' fonts table, ensure that there is no `glyf'
present also (which gets priority).
2017-03-07 17:27:58 +01:00
Werner Lemberg 27fee7f8c6 [sfnt, truetype] Always provide default instance.
As documented in the OpenType specification, an entry for the
default instance may be omitted in the named instance table.  In
particular this means that even if there is no named instance table
in the font we actually do have a named instance, namely the default
instance.

For consistency, we always want the default instance in our list of
named instances.  If it is missing, we try to synthesize it.

* src/sfnt/sfobjs.c (sfnt_init_face): Check whether the default
instance is in the table of named instances.  Otherwise adjust
number of instances.

* src/truetype/ttgxvar.c: Include FT_TRUETYPE_IDS_H.
(TT_Get_MM_Var): Use `face->root.style_flags' as the number of named
instances.
Sythesize a named instance entry if necessary.
(tt_done_blend): Free `normalized_stylecoords'.
2017-03-06 20:45:44 +01:00
Werner Lemberg c1b000da00 [sfnt] Remove redundant code.
* src/sfnt/sfobjs.c (sfnt_init_face): Remove second test for
`num_instances', which will always succeed.
2017-03-05 20:23:35 +01:00
Werner Lemberg 0c7fb43d05 [sfnt] Add `get_name_id' service.
* include/freetype/internal/sfnt.h (TT_Get_Name_ID_Func): New
typedef.
(SFNT_Interface): Add `get_name_id' field.
(FT_DEFINE_SFNT_INTERFACE): Updated.

* src/sfnt/sfdriver.c (search_name_id): Rename to...
(sfnt_get_name_id): ... this.
(sfnt_get_ps_name, sfnt_interface): Udpated.
2017-03-05 19:06:41 +01:00
Werner Lemberg 588e38e070 [truetype] Make `TT_Set_MM_Blend' set named instance index.
* src/truetype/ttgxvar.h (GX_Blend): New array
`normalized_stylecoords'.

* src/truetype/ttgxvar.c (TT_Get_MM_Var): Allocate and fill
`normalized_stylecoords'.
(TT_Set_MM_Blend): Check instance tuple and adjust `face_index'
accordingly.
2017-03-04 11:04:24 +01:00
Werner Lemberg 4717696c12 [truetype] Split off designer/normalized conversion routines.
* src/truetype/ttgxvar.c (TT_Set_Var_Design): Split off conversion
code designer->normalized coordinates to...
(ft_var_to_normalized): ... New function.
(TT_Get_Var_Design): Split off conversion code normalized->designer
coordinates to...
(ft_var_to_design): ... New function.
2017-03-02 21:42:14 +01:00
Werner Lemberg b553fcb514 [sfnt] Further generalize `sfnt_get_ps_name'; report invalid data.
* src/sfnt/sfdriver.c (sfnt_ps_map): New array.
(sfnt_is_postscript): New function.
(char_type_func): New typedef.
(get_win_string, get_apple_string): Add argument to specify
character checking function.
Add argument whether argument checking failures should be reported.
Update callers.
(search_name_id): Fix return value.
2017-02-28 15:27:43 +01:00
Werner Lemberg b653a23079 [sfnt] Split off another bit of `sfnt_get_ps_name'.
* src/sfnt/sfdriver.c (sfnt_get_ps_name): Split off some
functionality into...
(search_name_id): ... New function.
2017-02-28 15:27:43 +01:00
Werner Lemberg c1abd6aa47 [sfnt] Modularize `sfnt_get_ps_name'.
* src/sfnt/sfdriver.c (sfnt_get_ps_name): Split off some
functionality into...
(IS_WIN, IS_APPLE): ... New macros.
(get_win_string, get_apple_string): ... New functions.
2017-02-28 15:27:43 +01:00
Werner Lemberg 01f315f076 [truetype] Minor improvement.
* src/truetype/ttgload.c (TT_Process_Simple_Glyph,
load_truetype_glyph): Remove unnecessary tests.
2017-02-28 15:27:43 +01:00
Werner Lemberg f0cee1a22c * include/freetype/internal/tttypes.h (TT_Face): s/isCFF2/is_cff2/.
For orthogonality with other structure field names.

Update all users.
2017-02-23 08:23:39 +01:00
Alexei Podtelezhnikov 761d9e418b * src/smooth/ftgrays.c (gray_hline): Improve code. 2017-02-22 22:41:36 -05:00
Dominik Röttsches b31053476c Fix some `ttnameid.h' entries (#50313).
* include/freetype/ttnameid.h:
s/TT_MS_LANGID_SPANISH_INTERNATIONAL_SORT/TT_MS_LANGID_SPANISH_SPAIN_INTERNATIONAL_SORT/,
s/TT_MS_LANGID_MONGOLIAN_MONGOLIA_MONGOLIA/TT_MS_LANGID_MONGOLIAN_MONGOLIA_MONGOLIAN/.
2017-02-20 12:29:59 +01:00
Werner Lemberg e706798d43 [cff] Finish support for `random' operator.
* src/cff/cfftypes.h (CFF_SubFontRec): Add `random' field.

* src/cff/cffobjs.c: Updated.
(cff_driver_init): Initialize random seed value.

* src/cff/cffload.c (cff_random): New function.
(cff_subfont_load): Add `face' argument.
Update all callers.
Initialize random number generator with a proper seed value.
(cff_font_load): Add `face' argument.
Update all callers.

* src/cff/cffload.h: Updated.

* src/cff/cf2intrp.c (CF2_FIXME): Removed.
(cf2_interpT2CharString) <cf2_escRANDOM>: Implement opcode.

* src/cff/cffgload.c (cff_decoder_parse_charstrings): Don't
initialize random seed value.
<cff_op_random>: Use new random seed framework.
2017-02-20 09:15:13 +01:00
Werner Lemberg 156b30b1aa [cff] Sanitize `initialRandomSeed'.
* src/cff/cffload.c (cff_load_private_dict): Make
`initial_random_seed' value always positive.
2017-02-20 09:06:22 +01:00
Werner Lemberg 753e1131ee [cff] Introduce `random-seed' property (2/2).
* src/base/ftobjs.c: Include `FT_CFF_DRIVER_H'.
(open_face): Initialize `face->internal->random_seed'.
(FT_Face_Properties): Handle `FT_PARAM_TAG_RANDOM_SEED'.

* src/cff/cffdrivr.c (cff_property_set): Handle `random-seed'
property.
2017-02-20 09:01:14 +01:00
Werner Lemberg ca1486c32a [cff] Introduce `random-seed' property (1/2).
We need this for support of the `random' operator.

* include/freetype/ftcffdrv.h (FT_PARAM_TAG_RANDOM_SEED): New macro.

* include/freetype/internal/ftobjs.h (FT_Face_InternalRec): New
field `random_seed'.

* src/cff/cffobjs.h (CFF_DriverRec): New field `random_seed'.
2017-02-20 08:55:26 +01:00
Werner Lemberg 467b026cd5 Remove clang warnings.
* src/autofit/aflatin.c (af_latin_sort_blue): Add missing `static'
keyword.

* src/base/ftmm.c (FT_Set_Var_Design_Coordinates,
FT_Set_MM_Blend_Coordinates, FT_Set_Var_Blend_Coordinates):
Initialize some variables.
2017-02-18 10:42:48 +01:00
Nikolaus Waxweiler 2b0ac18990 Add face property for stem darkening.
* include/freetype/ftautoh.h (FT_PARAM_TAG_STEM_DARKENING): New
macro.

* include/freetype/internal/ftobjs.h (FT_Face_InternalRec): Add
`no_stem_darkening' field.

* src/autofit/afloader.c (af_loader_load_glyph),
src/autofit/afmodule.c (af_property_set): Updated.

* src/base/ftobjs.c: Include FT_AUTOHINTER_H.
(ft_open_face_internal): Updated.
(FT_Face_Properties): Handle FT_PARAM_TAG_STEM_DARKENING.

* src/cff/cf2ft.c (cf2_decoder_parse_charstrings): Updated.

* src/cff/cffdrivr.c (cff_property_set): Updated.
2017-02-18 10:42:23 +01:00
Nikolaus Waxweiler 2e9519885b Add face property for LCD filter weights.
* include/freetype/ftlcdfil.h (FT_PARAM_TAG_LCD_FILTER_WEIGHTS,
FT_LCD_FILTER_FIVE_TAPS): New macros.
(FT_LcdFiveTapFilter): New typedef.

* include/freetype/ftobjs.h (FT_Face_InternalRec)
[FT_CONFIG_OPTION_SUBPIXEL_RENDERING]: Add `lcd_weights' field.
(FT_Bitmap_LcdFilterFunc): Change third argument to weights array.
(ft_lcd_filter_fir): New prototype.
(FT_LibraryRec): Updated.

* src/base/ftlcdfil.c (_ft_lcd_filter_fir): Renamed to...
(ft_lcd_filter_dir): ... this base function.
Updated.
(_ft_lcd_filter_legacy): Updated.
(FT_Library_SetLcdFilterWeights, FT_Library_SetLcdFilter): Updated.

* src/base/ftobjs.c (ft_open_face_internal): Updated.
(FT_Face_Properties): Handle FT_PARAM_TAG_LCD_FILTER_WEIGHTS.

* src/smooth/ftsmooth.c (ft_smooth_render_generic)
[FT_CONFIG_OPTION_SUBPIXEL_RENDERING: Handle LCD weights from
`FT_Face_Internal'.
2017-02-16 20:45:45 +01:00
Nikolaus Waxweiler 64cdee7348 Add new function `FT_Face_Properties'.
This commit provides the framework, to be filled with something
useful in the next commits.

* include/freetype/freetype.h (FT_Face_Properties): Declare.

* src/base/ftobjs.c (FT_Face_Properties): New function.
2017-02-15 08:06:35 +01:00
Werner Lemberg 319125d4c2 [autofit] Prevent overlapping blue zones.
Problem reported as

  https://github.com/google/fonts/issues/632

The font in question (Nunito) has values 705 and 713 for the
reference and overshoot values, respectively, of the first blue
zone.  Blue zone 2, however, has value 710 for both the reference
and overshoot.  At 12ppem, reference and overshoot of blue zone 0
becomes 8px, while blue zone 2 becomes 9px.

A peculiarity of this font is that the tops of isolated vertical
stems like `N' have a slight overshoot also.  The auto-hinter tries
to find the nearest blue zone using the *original* coordinates.  For
vertical stems, this is value 713.  For normal horizontal tops like
in character `E', this is value 710.  Since value 713 is mapped to
8px but value 710 to 9px, `N' and similar characters are one pixel
higher than `E', which looks very bad.

This commit sanitizes blue zones to avoid such a behaviour.

* src/autofit/aflatin.c (af_latin_sort_blue): New function.
(af_latin_metrics_init_blues): Sort blue values and remove overlaps.
2017-02-13 09:34:17 +01:00
Alexei Podtelezhnikov fcd47b3d3e * src/smooth/ftgrays.c (gray_sweep): Improve code. 2017-02-12 23:07:29 -05:00
Werner Lemberg faa3c88254 [truetype] Implement `VVAR' table support.
* src/truetype/ttgxvar.h (GX_HVarTable): Renamed to...
(GX_HVVarTable): ...This.
(GX_Blend): Add fields for `VVAR' table handling.
Other minor updates.

* src/truetype/ttgxvar.c (ft_var_load_hvar): Renamed to...
(ft_var_load_hvvar): ...This.
Handle VVAR loading also (controlled by an additional parameter).
(tt_hadvance_adjust): Renamed to...
(tt_hvadvance_adjust): ...This.
Handle application of advance height also (controlled by an
additional parameter).
(tt_hadvance_adjust, tt_vadvance_adjust): Wrappers for
`tt_hvadvance_adjust'.

* src/truetype/ttdriver.c (tt_service_metrics_variations): Updated.
2017-02-06 13:13:02 +01:00
Werner Lemberg 1dee4bf9f7 [autofit] Use better blue zone characters for lowercase latin.
The number of lowercase characters for computing the top flat blue
zone value was too small (in most cases only `x' and `z').  If one
of the two characters has a large serif, say, it can happen that
FreeType must select between two different values, having a 50%
chance to use the wrong one.  As a result, rendering at larger PPEM
values could yield uneven lowercase glyph heights.

Problem reported by Christoph Koeberlin <christoph@koe.berlin>.

* src/autofit/afblue.dat (AF_BLUE_STRING_LATIN_SMALL): Replaced
with...
(AF_BLUE_STRING_LATIN_SMALL_TOP, AF_BLUE_STRING_LATIN_SMALL_BOTTOM):
... New, extended sets.
(AF_BLUE_STRINGSET_LATN): Updated.

* src/autofit/afblue.c, scr/autofit/afblue.h: Regenerated.
2017-02-05 08:33:10 +01:00
Werner Lemberg 1c513fbb88 Make `freetype-config' a wrapper of `pkg-config' if possible.
Based on ideas taken from

  http://pkgs.fedoraproject.org/cgit/rpms/freetype.git/tree/freetype-multilib.patch
  http://pkgs.fedoraproject.org/cgit/rpms/freetype.git/tree/freetype-2.5.3-freetype-config-prefix.patch

* builds/unix/freetype-config.in: Rewritten.  Use `pkg-config' to
set output variables if program is available.

* docs/CHANGES, docs/freetype-config.1: Updated.
2017-02-04 20:30:40 +01:00
Werner Lemberg 790428905d * builds/unix/unix-def.in (freetype-config): Fix permissions. 2017-02-04 16:08:08 +01:00
Werner Lemberg 0a1169f7c3 * src/autofit/afglobal.c (af_face_globals_free): Erase useless code. 2017-02-03 19:38:20 +01:00
Werner Lemberg 5a7f2ff520 * include/freetype/ftgasp.h (FT_GASP_SYMMETRIC_GRIDFIT): Fix value.
Reported by Behdad.
2017-02-03 08:31:18 +01:00
Werner Lemberg e6699596af [truetype] Fix MVAR post-action handling.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=509

* src/truetype/ttobjs.c (tt_size_reset): Do nothing for CFF2.  This
is important to make `tt_size_reset_iterator' (called in
`tt_apply_mvar') always work.
2017-02-02 11:38:04 +01:00
Werner Lemberg dadc50a467 Make compilation with FT_CONFIG_OPTION_PIC work again.
All code committed here is guarded with `FT_CONFIG_OPTION_PIC'.

* include/freetype/internal/services/svmetric.h
(FT_DEFINE_SERVICE_METRICSVARIATIONSREC): Remove trailing semicolon.

* src/autofit/aflatin.c (af_latin_hints_compute_edges,
af_latin_hint_edges): Provide `globals' variable.

* src/autofit/afloader.c (af_loader_load_glyph): Remove shadowing
variable.

* src/autofit/afmodule.c (AF_SCRIPT_CLASSES_GET,
AF_STYLE_CLASSES_GET): Redefine.

* src/autofit/aftypes.h (AF_DEFINE_WRITING_SYSTEM_CLASS): Fix typo.

* src/cff/cffparse.c (CFF_FIELD_BLEND): Provide it.

* src/cff/cffpic.h (CffModulePIC): Fix typo.
2017-02-02 07:13:29 +01:00
Alexei Podtelezhnikov 2ca5b07d4f * src/smooth/ftgrays.c (gray_render_scanline): Improve code. 2017-01-31 23:13:50 -05:00
Werner Lemberg fa437d8d3c [cff] Provide metrics variation service interface (#50196).
Only now I've got an OTF with an HVAR table for testing...

The code in `ftmm.c' uses `FT_FACE_LOOKUP_SERVICE' to get the
metrics variations interface.  However, this didn't work with
`FT_FACE_FIND_GLOBAL_SERVICE' used in `sfnt_init_face'.

* src/cff/cffdrivr.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(cff_hadvance_adjust, cff_metrics_adjust): Wrapper functions for
metric service functions from the `truetype' module.
(cff_service_metrics_variations): New service.
(cff_services): Updated.

* src/cff/cffpic.h (CFF_SERVICE_METRICS_VAR_GET): New macro.
[FT_CONFIG_OPTION_PIC]: Synchronize code.

* src/sfnt/sfobjs.c (sfnt_init_face): Replace call to
FT_FACE_FIND_GLOBAL_SERVICE with `ft_module_get_service' to always
load the service from the `truetype' module.
2017-01-31 23:06:38 +01:00
Werner Lemberg 4058939cb1 Add framework to support services with 9 functions.
* include/freetype/internal/ftserv.h (FT_DEFINE_SERVICEDESCREC9):
New macro.
2017-01-31 19:11:56 +01:00
Werner Lemberg 1e55060109 [base] Fix error handing in MM functions.
* src/base/ftmm.c (FT_Set_Var_Design_Coordinates,
FT_Set_MM_Blend_Coordinates, FT_Set_Var_Blend_Coordinates):
Implement it.
2017-01-31 18:47:10 +01:00
Werner Lemberg e80e4d811a [truetype] Fix sanity check for `gvar' table (#50184).
* src/truetype/ttgxvar.c (ft_var_load_gvar): There might be missing
variation data for some glyphs.
2017-01-31 08:32:07 +01:00
Werner Lemberg 31f8055390 [autofit] Avoid uninitialized jumps (#50191).
* src/autofit/afcjk.c (af_cjk_metrics_check_digits),
src/autofit/aflatin.c (af_latin_metrics_check_digits): Initialize
`advance'.
2017-01-31 08:10:04 +01:00
Werner Lemberg 464b16ba46 s/GB2312/PRC/.
* include/freetype/freetype.h (FT_ENCODING_PRC): New enum value.
(FT_ENCODING_GB2312): Deprecated.

* include/freetype/ttnameid.h (TT_MS_ID_PRC): New macro.
(TT_MS_ID_GB2312): Deprecated.

* src/sfnt/sfobjs.c (sfnt_find_encoding): Updated.

* docs/CHANGES: Updated.
2017-01-27 08:45:46 +01:00
Werner Lemberg f4253366f1 [base] Add `FT_Get_Sfnt_LangTag' function.
* include/freetype/ftsnames.h (FT_SfntLangTag): New structure.
(FT_Get_Sfnt_LangTag): New declaration.

* src/base/ftsnames.c (FT_Get_Sfnt_LangTag): New funtion.

* docs/CHANGES: Updated.
2017-01-27 00:06:52 +01:00
Werner Lemberg 939df42072 [sfnt] Support `name' table format 1.
* include/freetype/internal/tttypes.h (TT_LangTagRec): New
structure.
(TT_NameTableRec): Add fields `numLangTagRecords' and `langTags'.

* src/sfnt/ttload.c (tt_face_load_name): Add support for language
tags.
Reduce array size of name strings in case of invalid entries.
(tt_face_free_name): Updated.

* docs/CHANGES: Updated.
2017-01-26 21:41:38 +01:00
Werner Lemberg f4e5696643 [sfnt] s/TT_NameEntry/TT_Name/.
* include/freetype/internal/tttypes.h (TT_NameEntryRec): Renamed
to...
(TT_NameRec): This.
(TT_NameTableRec): Updated.

* src/base/ftsnames.c (FT_Get_Sfnt_Name): Updated.

* src/sfnt/sfdriver.c (sfnt_get_ps_name): Updated.

* src/sfnt/sfobjs.c (tt_name_entry_ascii_from_utf16,
tt_name_entry_ascii_from_other): Renamed to...
(tt_name_ascii_from_utf16, tt_name_entry_ascii_from_other): This,
respectively.
(TT_NameEntry_ConvertFunc): Renamed to...
(TT_Name_ConvertFunc): This.
(tt_face_get_name): Updated.

* src/sfnt/ttload.c (tt_face_load_name, tt_face_free_names):
Updated.
2017-01-25 15:08:41 +01:00
Alexei Podtelezhnikov 983fb0df5a Typos. 2017-01-24 23:56:59 -05:00
Werner Lemberg 143971202a [sfnt] Fix Postscript name service for symbol fonts.
* src/sfnt/sfdriver.c (sfnt_get_ps_name): Accept PID/EID=3/0
entries also.
2017-01-24 20:48:50 +01:00
Werner Lemberg 141f0ea5ab [truetype] For OpenType 1.7: s/preferred/typographic/ (sub)family.
* include/freetype/ftsnames.h
(FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_FAMILY,
FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_SUBFAMILY): New macros.
(FT_PARAM_TAG_IGNORE_PREFERRED_FAMILY,
FT_PARAM_TAG_IGNORE_PREFERRED_SUBFAMILY): Deprecated.

* include/freetype/ttnameid.h (TT_NAME_ID_TYPOGRAPHIC_FAMILY,
TT_NAME_ID_TYPOGRAPHIC_SUBFAMILY): New macros.
(TT_NAME_ID_PREFERRED_FAMILY, TT_NAME_ID_PREFERRED_SUBFAMILY):
Deprecated.

* src/sfnt/sfobjs.c (sfnt_load_face): Updated.

* docs/CHANGES: Updated.
2017-01-24 17:00:36 +01:00
Werner Lemberg 693f56ffcd [base] Add `FT_Set_Default_Properties' (#49187).
* include/freetype/ftmodapi.h: Add declaration.

* src/base/ftinit.c (ft_set_default_properties): Renamed to...
(FT_Set_Default_Properties): ... this.
(FT_Init_FreeType): Updated.

* docs/CHANGES: Updated.
2017-01-23 12:53:18 +01:00
Werner Lemberg f502092bcd [truetype] Minor updates for OpenType 1.8.1.
* src/truetype/ttgxvar.h (GX_MVarTable): `axisCount' has been
removed frem the specification; it is now reserved.

* src/truetype/ttgxvar.c (ft_var_load_mvar): Updated.
(GX_FVar_Head): Remove `countSizePairs'; the corresponding data
field in the `MVAR' table is now reserved.
(fvar_fields): Updated.
2017-01-23 11:47:40 +01:00
Werner Lemberg 79d52b9a8d [truetype] Avoid segfault for invalid variation data.
* src/truetype/ttgxvar.c (ft_var_load_item_variation_store): Assure
`itemCount' is not zero.

Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=441
2017-01-23 07:43:56 +01:00
Alexei Podtelezhnikov 15c6e8d6c5 Typos. 2017-01-22 23:09:05 -05:00
Werner Lemberg 43061d6a93 * src/truetype/ttinterp.c (TT_RunIns): Adjust loop detector limits. 2017-01-20 10:16:38 +01:00
Alexei Podtelezhnikov 236bbdbef9 Typos. 2017-01-18 23:12:31 -05:00
Alexei Podtelezhnikov ca472220a4 Typos. 2017-01-17 23:45:08 -05:00
Werner Lemberg ba6f3e18d0 * include/freetype/ttnameid.h: Updated to OpenType 1.8.1.
(TT_APPLE_ID_FULL_UNICODE): New macro.

(TT_MS_LANGID_BOSNIAN_BOSNIA_HERZ_CYRILLIC,
TT_MS_LANGID_UPPER_SORBIAN_GERMANY,
TT_MS_LANGID_LOWER_SORBIAN_GERMANY, TT_MS_LANGID_IRISH_IRELAND,
TT_MS_LANGID_INUKTITUT_CANADA_LATIN, TT_MS_LANGID_BASHKIR_RUSSIA,
TT_MS_LANGID_LUXEMBOURGISH_LUXEMBOURG,
TT_MS_LANGID_GREENLANDIC_GREENLAND, TT_MS_LANGID_MAPUDUNGUN_CHILE,
TT_MS_LANGID_MOHAWK_MOHAWK, TT_MS_LANGID_BRETON_FRANCE,
TT_MS_LANGID_OCCITAN_FRANCE, TT_MS_LANGID_CORSICAN_FRANCE,
TT_MS_LANGID_ALSATIAN_FRANCE, TT_MS_LANGID_YAKUT_RUSSIA,
TT_MS_LANGID_KICHE_GUATEMALA, TT_MS_LANGID_KINYARWANDA_RWANDA,
TT_MS_LANGID_WOLOF_SENEGAL, TT_MS_LANGID_DARI_AFGHANISTAN): New
macros.

(TT_MS_LANGID_SERBIAN_BOSNIA_HERZ_CYRILLIC): Fix value.

(TT_MS_LANGID_GERMAN_LIECHTENSTEIN, TT_MS_LANGID_CATALAN_CATALAN,
TT_MS_LANGID_CHINESE_MACAO, TT_MS_LANGID_SPANISH_SPAIN_MODERN_SORT,
TT_MS_LANGID_KOREAN_KOREA, TT_MS_LANGID_ROMANSH_SWITZERLAND,
TT_MS_LANGID_SLOVENIAN_SLOVENIA, TT_MS_LANGID_BASQUE_BASQUE,
TT_MS_LANGID_SETSWANA_SOUTH_AFRICA,
TT_MS_LANGID_ISIXHOSA_SOUTH_AFRICA,
TT_MS_LANGID_ISIZULU_SOUTH_AFRICA, TT_MS_LANGID_KAZAKH_KAZAKHSTAN,
TT_MS_LANGID_KYRGYZ_KYRGYZSTAN, TT_MS_LANGID_KISWAHILI_KENYA,
TT_MS_LANGID_TATAR_RUSSIA, TT_MS_LANGID_ODIA_INDIA,
TT_MS_LANGID_MONGOLIAN_PRC, TT_MS_LANGID_TIBETAN_PRC,
TT_MS_LANGID_WELSH_UNITED_KINGDOM, TT_MS_LANGID_GALICIAN_GALICIAN,
TT_MS_LANGID_SINHALA_SRI_LANKA, TT_MS_LANGID_TAMAZIGHT_ALGERIA,
TT_MS_LANGID_SESOTHO_SA_LEBOA_SOUTH_AFRICA, TT_MS_LANGID_YI_PRC,
TT_MS_LANGID_UIGHUR_PRC): New aliases.

Remove commented out code.

(TT_NAME_ID_LIGHT_BACKGROUND, TT_NAME_ID_DARK_BACKGROUND,
TT_NAME_ID_VARIATIONS_PREFIX): New macros.

(HAVE_LIMIT_ON_IDENTS): Remove macro (which was useless since many
years), use guarded long macros by default and define short versions
as aliases for the long ones.
2017-01-17 11:50:09 +01:00
Werner Lemberg 322b3be514 * src/truetype/ttgxvar.c (tt_apply_var): Handle underline parameters
also.
2017-01-15 13:57:25 +01:00
Werner Lemberg c529885b0b * src/base/ftobjs.c (ft_open_face_internal): Improve tracing. 2017-01-12 08:42:55 +01:00
Werner Lemberg 723aafb5e3 [truetype] Actually use metrics variation service.
* src/base/ftmm.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(ft_face_get_mvar_service): New auxiliary function to look up
metrics variation service.
(FT_Set_Var_Design_Coordinates, FT_Set_MM_Blend_Coordinates,
FT_Set_Var_Blend_Coordinates): Call metrics variation service.

* src/truetype/ttobjs.c (tt_face_init): Use metrics variations for
named instances.
2017-01-11 14:21:26 +01:00
Werner Lemberg d718ac4ead [truetype] Provide metrics variation service.
* include/freetype/internal/services/svmetric.h
(FT_Metrics_Adjust_Func): Reduce number of necessary parameters.

* src/truetype/ttgxvar.c: Include FT_LIST_H.
(tt_size_reset_iterator): New auxiliary function for...
(tt_apply_var): New function.

* src/truetype/ttgxvar.h: Updated.

* src/truetype/ttdriver.c (tt_service_metrics_variations): Add
`tt_apply_mvar'.

* include/freetype/internal/ftserv.h (FT_ServiceCache): Add metrics
variation service.
2017-01-11 14:12:34 +01:00
Werner Lemberg 07ee1d250c [truetype] Parse `MVAR' table.
* src/truetype/ttgxvar.h (MVAR_TAG_XXX): New macros for MVAR tags.
(GX_Value, GX_MVarTable): New structures.
(GX_Blend): Add it.

* src/truetype/ttgxvar.c (GX_VALUE_SIZE, GX_VALUE_CASE,
GX_GASP_CASE): New macros.
(ft_var_get_value_pointer): New auxiliary function to get a pointer
to a value from various SFNT tables already stored in `TT_Face'.
(ft_var_load_mvar): New function.
(TT_Get_MM_Var): Call it.
(tt_done_blend): Updated.
2017-01-11 12:50:51 +01:00
Werner Lemberg 8ab08cff63 [truetype] More preparations for MVAR support.
* src/truetype/ttobjs.c (tt_size_reset): Add argument to make
function only recompute ascender, descender, and height.

* src/truetype/ttobjs.h: Updated.

* src/truetype/ttdriver.c (tt_size_select, tt_size_request):
Updated.
2017-01-11 10:05:27 +01:00
Werner Lemberg 7ccca6aec1 [pcf] Disable long family names by default.
* include/freetype/config/ftoption.h
(PCF_CONFIG_OPTION_LONG_FAMILY_NAMES): Comment out.
2017-01-09 19:54:44 +01:00
Werner Lemberg 08fd250e1a [pcf] Make long family names configurable.
The change from 2016-09-29 was too radical (except for people using
the openSuSE GNU/Linux distribution).  To ameliorate the situation,
PCF_CONFIG_OPTION_LONG_FAMILY_NAMES gets introduced which controls
the feature; if set, a new PCF property option
`no-long-family-names' can be used to switch this feature off.

* include/freetype/config/ftoption.h, devel/ftoption.h
(PCF_CONFIG_OPTION_LONG_FAMILY_NAMES): New option.

* include/freetype/ftpcfdrv.h: New header file (only containing
comments currently, used for building the documentation).

* include/freetype/config/ftheader.h (FT_PCF_DRIVER_H): New macro.

* src/pcf/pcf.h (PCF_Driver): Add `no_long_family_names' field.

* src/pcf/pcfdrivr.c: Include FT_SERVICE_PROPERTIES_H and
FT_PCF_DRIVER_H.
(pcf_property_set, pcf_property_get): New functions.
(pcf_service_properties): New service.
(pcf_servives): Updated.
(pcf_driver_init) [PCF_CONFIG_OPTION_LONG_FAMILY_NAMES]: Handle
`no_long_family_names'.

* src/pcf/pcfread.c (pcf_load_font): Handle `no_long_family_names'
and PCF_CONFIG_OPTION_LONG_FAMILY_NAMES.

* docs/CHANGES: Updated.
2017-01-09 11:30:32 +01:00
Werner Lemberg f837a50ec3 [pcf] Introduce a driver structure.
To be filled later on with something useful.

* src/pcf/pcf.h (PCF_Driver): New structure.

* src/pcf/pcfdrivr.c (pcf_driver_init, pcf_driver_done): New dummy
functions.
(pcf_driver_class): Updated.
2017-01-09 10:49:03 +01:00
Werner Lemberg 469ced7f7f [truetype] Again some GX code shuffling.
We need this later on for MVAR also.

* src/truetype/ttgxvar.c (tt_hadvance_adjust): Split off computing
an item store variation delta into...
(ft_var_get_item_delta): ...new function.
2017-01-08 09:28:34 +01:00
Werner Lemberg 6812f17472 [truetype] Adjust font variation flags for MVAR.
* include/freetype/internal/tttypes.h (TT_FACE_FLAG_VAR_XXX):
Remove all flags related to MVAR; replace it with...
(TT_FACE_FLAG_VAR_MVAR): ...this new macro.
(TT_Face): Remove `mvar_support' field (which was still unused).
2017-01-08 07:33:05 +01:00
Werner Lemberg 0291913491 [truetype] More GX code shuffling.
We need this later on for MVAR also.

* src/truetype/ttgxvar.c (tt_done_blend): Split off handling of item
variation store into...
(ft_var_done_item_variation_store): ...new function.
2017-01-07 07:45:28 +01:00
Werner Lemberg fb90f00cbd [truetype] More generalization of GX stuff.
We need this later on for MVAR also.

* src/truetype/ttgxvar.c (ft_var_load_delta_set_index_mapping): Add
parameters for delta-set index mapping and item variation store.
(ft_var_load_item_variation_store): Add parameter for item variation
store.
s/hvarData/varData/.
Move allocation of `hvar_table' to...
(ft_var_load_hvar): ...this function.
Updated.
2017-01-06 22:23:52 +01:00
Werner Lemberg 0bd0112f4e [truetype] Some GX structure renames for generalization.
We need this later on for MVAR also.

* src/truetype/ttgxvar.h (GX_HVarData): Renamed to...
(GX_ItemVarData): ...this.
(GX_HVarRegion): Renamed to...
(GX_VarRegion): ...this.
(GX_HVStore): Renamed to...
(GX_ItemVarStore): ...this.
(GX_WidthMap): Renamed to...
(GX_DeltaSetIdxMap): ...this.

(GX_HVarTable): Updated.

* src/truetype/ttgxvar.c: Updated.
2017-01-06 21:32:49 +01:00
Werner Lemberg 9c814704c0 [truetype] Code shuffling.
* src/truetype/ttgxvar.c (): Split off loading of item variation
store and delta set index mapping into...
(ft_var_load_item_variation_store,
ft_var_load_delta_set_index_mapping): ... new functions.
2017-01-06 21:13:36 +01:00
Werner Lemberg 7e1cce58b5 [truetype] Add HVAR access without advance width map.
* src/truetype/ttgxvar.c (ft_var_load_hvar): Handle case where
`offsetToAdvanceWidthMapping' is zero.
(tt_hadvance_adjust): Implement direct deltaSet access by glyph
index.
2017-01-06 20:31:22 +01:00
Werner Lemberg 8b755445bb [pcf] Revise driver.
This commit improves tracing and handling of malformed fonts.  In
particular, the changes to `pcf_get_properties' fix

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=379

* src/pcf/pcfread.c (tableNames): Use long names for better
readability.
(pcf_read_TOC): Allow at most 9 tables.
(pcf_get_properties): Allow at most 256 properties.
Limit strings array length to 256 * (65536 + 1) bytes.
Better tracing.
(pcf_get_metric): Trace metric data.
(pcf_get_metrics): Allow at most 65536 metrics.
Fix comparison of `metrics->ascent' and `metrics->descent' to avoid
potential overflow.
Better tracing.
(pcf_get_bitmaps): Allow at most 65536 bitmaps.
Better tracing.
(pcf_get_encodings, pcf_get_accel): Better tracing.

* src/pcf/pcfdrivr.c (PCF_Glyph_Load): Don't trace `format' details.
These are now shown by `pcf_get_bitmaps'.
2017-01-06 11:47:55 +01:00
Werner Lemberg 563ae78022 Update copyright year. 2017-01-04 20:16:34 +01:00
Werner Lemberg a7c2f44b45 * src/pcf/pcfdrivr.c (PCF_Face_Init): Trace compression format. 2017-01-04 13:12:03 +01:00
Werner Lemberg c9d477242c [cff] More consistency checks for pure CFFs.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=378

* src/cff/cffload.c (cff_font_load): Check element number and size
of Name and Top DICT indices.
2017-01-04 10:00:49 +01:00
Werner Lemberg 025226ae14 [cff, truetype] Minor tracing improvement.
* src/cff/cffobjs.c (cff_face_init), src/truetype/ttobjs.c
(tt_face_init): Indent first tracing message from SFNT driver.
2017-01-04 07:45:44 +01:00
Werner Lemberg 8982405f0c [truetype] Various minor fixes.
* src/truetype/ttgload.c (TT_Load_Simple_Glyph): Check instruction
size only if we do native hinting.
(TT_Load_Glyph): Trace returned error code.

* src/truetype/ttobjs.c (tt_size_run_fpgm, tt_size_run_prep): Trace
returned error code.
(tt_size_ready_bytecode): Don't run `prep' table if `fpgm' table is
invalid.
2017-01-03 09:46:19 +01:00
Werner Lemberg 624b680289 [sfnt] Don't fail if PCLT, EBLC (and similar tables) are invalid.
These tables are optional.

* src/sfnt/sfobjs.c (sfnt_load_face): Implement it.
2017-01-03 09:42:41 +01:00
Werner Lemberg 69414e7afd * src/cff/cffparse.c (cff_parse_num): Simplify. 2017-01-03 06:53:13 +01:00
Werner Lemberg 248eaa4f60 Various fixes for clang's undefined behaviour sanitizer.
* src/cff/cffload.c (FT_fdot14ToFixed): Fix casting.
(cff_blend_doBlend): Don't left-shift negative numbers.
Handle 5-byte numbers byte by byte to avoid alignment issues.

* src/cff/cffparse.c (cff_parse): Handle 5-byte numbers byte by byte
to avoid alignment issues.

* src/cid/cidload (cid_read_subrs): Do nothing if we don't have any
subrs.

* src/psaux/t1decode.c (t1_decode_parse_charstring): Fix tracing.

* src/tools/glnames.py (main): Put `DEFINE_PSTABLES' guard around
definition of `ft_get_adobe_glyph_index'.

* src/psnames/pstables.h: Regenerated.

* src/psnames/psmodule.c: Inlude `pstables.h' twice to get both
declaration and definition.

* src/truetype/ttgxvar.c (FT_fdot14ToFixed, FT_intToFixed): Fix
casting.
2017-01-03 00:27:07 +01:00
Werner Lemberg bdec162d92 [cff] Handle multiple `blend' operators in a row correctly.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=368

* src/cff/cffload.c (cff_blend_doBlend): Adjust `parser->stack'
pointers into `subFont->blend_stack' after reallocation.
2017-01-01 20:51:55 +01:00
Werner Lemberg 63765a8f2a [sfnt] Return correct number of named instances for TTCs.
Without this patch, requesting information for face index N returned
the data for face index N+1 (or index 0).

* src/sfnt/sfobjs.c (sfnt_init_face): Correctly adjust `face_index'
for negative `face_instance_index' values.
2017-01-01 10:43:41 +01:00
Werner Lemberg 24be60b5f1 */*: Use hex numbers for errors in tracing messages. 2017-01-01 08:20:38 +01:00
Werner Lemberg e9a154e700 [truetype] Check axis count in HVAR table.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=362

* src/truetype/ttgxvar.c (ft_var_load_hvar): Check axis count.
(ft_var_load_avar): Fix tracing message.
2016-12-31 21:41:08 +01:00
Werner Lemberg 069083cccd * Version 2.7.1 released.
=========================

Tag sources with `VER-2-7-1'.

* docs/VERSION.TXT: Add entry for version 2.7.1.

* README, Jamfile (RefDoc), builds/windows/vc2005/freetype.vcproj,
builds/windows/vc2005/index.html,
builds/windows/vc2008/freetype.vcproj,
builds/windows/vc2008/index.html,
builds/windows/vc2010/freetype.vcxproj,
builds/windows/vc2010/index.html,
builds/windows/visualc/freetype.dsp,
builds/windows/visualc/freetype.vcproj,
builds/windows/visualc/index.html,
builds/windows/visualce/freetype.dsp,
builds/windows/visualce/freetype.vcproj,
builds/windows/visualce/index.html,
builds/wince/vc2005-ce/freetype.vcproj,
builds/wince/vc2005-ce/index.html,
builds/wince/vc2008-ce/freetype.vcproj,
builds/wince/vc2008-ce/index.html: s/2.7/2.7.1/, s/27/271/.

* include/freetype/freetype.h (FREETYPE_PATCH): Set to 1.

* builds/unix/configure.raw (version_info): Set to 19:0:13.
* CMakeLists.txt (VERSION_PATCH): Set to 1.
2016-12-30 21:16:46 +01:00
Werner Lemberg 8fb9d22a6b [ftfuzzer] Replace `rand' with an xorshift algorithm.
* src/tools/ftfuzzer/ftfuzzer.cc: Don't include `stdlib.h'.
(Random): Implement and use a 32bit `xorshift' algorithm.
2016-12-30 19:51:37 +01:00
Werner Lemberg c9de4bf6ba Typo. 2016-12-30 10:07:23 +01:00
Werner Lemberg 6b21d1281e [ftfuzzer] Restrict number of tested bitmap strikes.
Malformed fonts often have large values for the number of bitmap
strikes, and FreeType doesn't check the validity of all bitmap
strikes in advance.

Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=353

* src/tools/ftfuzzer/ftfuzzer.cc: Include `stdlib.h' for `rand'.
(Random): Small class to provide n randomly selected numbers
(without repitition) out of the value set [0,N].
(LLVMFuzzerTestOneInput): Use it to test only up to 10 bitmap
strikes.
2016-12-30 10:00:54 +01:00
Werner Lemberg 7591bf11d1 [truetype] Variation font API stability issues.
Make some functions work before a call to `TT_Set_MM_Blend'.

* src/truetype/ttgxvar.c (tt_hadvance_adjust): Exit immediately if
we don't blend.
(TT_Get_MM_Blend, TT_Get_Var_Design): Return default values if we
don't blend.
2016-12-29 21:39:06 +01:00
Werner Lemberg 91fc3bd7c9 * src/truetype/ttgxvar.c (TT_Get_MM_Var): Check axis data.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=348
2016-12-29 21:34:46 +01:00
Werner Lemberg 180185109b [truetype] Tracing fixes.
* src/truetype/ttgxvar.c (tt_hadvance_adjust): Emit correct
information.
(TT_Set_Var_Design): Fix typo.
(TT_Get_Var_Design): Fix typos.
2016-12-29 21:30:06 +01:00
Werner Lemberg 84b0d9927b */*: Use `0.5f' for tracing 16.16 numbers. 2016-12-29 10:38:51 +01:00
Werner Lemberg 346b141762 [pcf] Protect against gzip bombs.
Fix suggested by Kostya; reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=345

* src/pcf/pcfread.c (pcf_read_TOC): Limit number of TOC entries to
1024.
2016-12-29 06:03:40 +01:00
Werner Lemberg 6fb549ddab [psnames] Only declare, not define, data in `pstables.h' (#49949).
Pdfium includes `pstables.h' a second time; moving the definition
from `pstables.h' to `psmodule.c' saves more than 60kByte data
segment space for this case.

* src/tools/glnames.py (StringTable::dump,
StringTable::dump_sublist, dump_encoding, dump_array): Emit
additional code to only define tables if `DEFINE_PS_TABLES' is set.

* src/psnames/pstables.h: Regenerated.
* src/psnames/psmodule.c (DEFINE_PS_TABLES): Define.
2016-12-28 22:23:33 +01:00
Werner Lemberg c4a1ef3c94 [cff] Catch `blend' op in non-variant fonts.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=334

* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdBLEND>: Don't
allow `blend' op for non-variant fonts.
2016-12-28 21:22:45 +01:00
Werner Lemberg c4cd34a9e0 [cff] Better check of number of blends.
* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdBLEND>,
src/cff/cffparse.c (cff_parse_blend): Compare number of blends with
stack size.
2016-12-28 08:33:35 +01:00
Werner Lemberg 48fd5bb2b6 Documentation updates.
* docs/CHANGES: Add missing information.

* docs/formats.txt: Rewritten and updated.
2016-12-27 10:20:23 +01:00
Werner Lemberg e5e3556fa2 [truetype, type1] Implement `FT_Get_Var_Design_Coordinates'.
* src/truetype/ttgxvar.c (TT_Get_Var_Design): Implement.
(TT_Set_Var_Design): Fix tracing.

* src/type1/t1load.c (T1_Get_Var_Design): Implement.
2016-12-27 06:49:37 +01:00
Werner Lemberg a300c1c3af * src/truetype/ttpload.c (tt_face_load_hdmx): Ignore `version'.
Problem reported by 張俊芝 <418092625@qq.com>.
2016-12-24 09:27:15 +01:00
Werner Lemberg d1db57c284 * src/sfnt/ttsbit.c (tt_face_load_sbit): Allow more version values.
Some fonts seem to have the `version' field in the wrong byte order.

Problem reported by 張俊芝 <418092625@qq.com>.
2016-12-24 09:05:16 +01:00
Werner Lemberg fde0b78cce * src/truetype/ttpload.c (tt_face_load_loca): Sanitize table length.
This trivial fix allows us to accept more fonts.

Problem reported by 張俊芝 <418092625@qq.com>.
2016-12-24 08:17:19 +01:00
Werner Lemberg 1fecdfe346 * src/sfnt/sfobjs.c (sfnt_init_face): Fix tracing. 2016-12-24 07:50:45 +01:00
Werner Lemberg 8d37efbc79 Add missing ChangeLog entry for commit d44daf9e. 2016-12-22 20:48:28 +01:00
Werner Lemberg 18bd176a65 * CMakeLists.txt: Make it work with cmake 2.8.11.2 (#49909). 2016-12-22 12:24:23 +01:00
Werner Lemberg 06d61b487a Ensure used preprocessor symbols are defined (#49790).
* builds/unix/ftconfig.in, builds/vms/ftconfig.h,
include/freetype/config/ftconfig.h: Check `__GNUC__', `__IBMC__',
and `__SUNPRO_C' correctly.
2016-12-22 10:43:46 +01:00
Werner Lemberg 7f7333990c * src/base/ftrfork.c (FT_Raccess_Get_DataOffsets): Check `count'.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=308
2016-12-22 10:12:17 +01:00
Werner Lemberg b44e6c2035 [cff] Protect against invalid `vsindex' and `blend' values.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=305

* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdVSINDEX,
cf2_cmdBLEND>: Implement it.
2016-12-22 08:30:15 +01:00
Werner Lemberg ada8297175 [ftfuzzer] Always use Adobe CFF engine.
* src/tools/ftfuzzer/ftfuzzer.cc (FT_Global::FT_Global): Implement
it.
2016-12-22 08:25:42 +01:00
Werner Lemberg 7209110345 * src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Thinko.
I should really stop coding late in the evening...

Thanks again to Ben for checking.
2016-12-21 23:46:29 +01:00
Werner Lemberg d44daf9e9b * src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Thinko.
Don't apply deltas twice for non-phantom points.

Spotted by Ben Wagner.
2016-12-21 23:03:48 +01:00
Werner Lemberg e6a429e2c7 [cff, truetype] Another try for #49829.
* src/cff/cffdrivr.c: Don't include
`FT_SERVICE_METRICS_VARIATIONS_H'.
(cff_get_advances): Use `ttface->variation_support'.

* src/truetype/ttdriver.c (tt_get_advances): Use
`ttface->variation_support'.

* src/truetype/ttgload.c (TT_Process_Simple_Glyph,
load_truetype_glyph): Use `ttface->variation_support'.
2016-12-21 20:27:48 +01:00
Werner Lemberg 64a91137f1 [truetype, sfnt] Introduce font variation flags to `TT_Face'.
* include/freetype/internal/tttypes.h (TT_FACE_FLAG_VAR_XXX):
New macros describing available functionality of various OpenType
tables related to font variation.
(TT_Face): New fields `variation_support' and `mvar_support',
replacing and extending `use_fvar'.

* src/sfnt/sfobjs.c (sfnt_init_face, sfnt_load_face): Use
`variation_support'.

* src/truetype/ttgxvar.c (ft_var_load_hvar): Set `variation_support'
field.
(TT_Vary_Apply_Glyph_Deltas): Updated.
2016-12-21 19:30:33 +01:00
Werner Lemberg 57a6733dcf [base] Improve sanity check for Mac resources (#49888).
* src/base/ftobjs.c (Mac_Read_sfnt_Resource): Abort if `rlen' is not
positive.
2016-12-21 06:52:23 +01:00
Werner Lemberg ded4bdb5d0 [base] More sanity checks for Mac resources.
We use

  https://github.com/kreativekorp/ksfl/wiki/Macintosh-Resource-File-Format

and

  https://developer.apple.com/legacy/library/documentation/mac/pdf/MoreMacintoshToolbox.pdf#page=151

as references.

* include/freetype/internal/ftrfork.h (FT_RFork_Ref): Use FT_Short
for `res_id'.

* src/base/ftrfork.c (FT_Raccess_Get_HeaderInfo): Extract map length
and use it to improve sanity checks.
Follow the specification more closely;in particular, all data types
are signed, not unsigned.
(FT_Raccess_Get_DataOffsets): Follow the specification more closely;
in particular, all data types are signed, not unsigned.
Add some sanity checks.
2016-12-20 23:26:38 +01:00
Werner Lemberg d678b37e8a Another minor ChangeLog addition. 2016-12-20 12:45:31 +01:00
Werner Lemberg 70704b34ac [truetype] Improve logic for getting fast advance widths.
* src/cff/cffdrivr.c (cff_get_advances), src/truetype/ttdriver.c
(tt_get_advances): Use `is_default_instance' for test; this gets
recomputed after changing blend coordinates.
2016-12-20 12:27:22 +01:00
Werner Lemberg 59b0b3a76c Add bug reference to previous commit. 2016-12-20 11:39:52 +01:00
Ben Wagner cc576f8002 [truetype] Fix linear metrics of GX variation fonts.
When asking for an unhinted non-default variations,
`linearVertAdvance' is currently the value from the `hmtx' table
instead of the actual value after applying the variation.  `HVAR'
support fixes this, but fonts will exist without that table and will
need sane fallback.

* src/truetype/ttgload.c (TT_Process_Simple_Glyph,
load_truetype_glyph): Implement linear advance adjustments if `HVAR'
or `VVAR' tables are missing.
2016-12-20 11:37:42 +01:00
Werner Lemberg a1e85f11c8 [cff, truetype] Fast advance width retrieval for fonts with HVAR.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

* src/base/ftadvanc.c (LOAD_ADVANCE_FAST_CHECK): Don't handle MM.

* src/cff/cffdrivr.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(cff_get_advances): Test for HVAR and VVAR.

* src/truetype/ttdriver.c (tt_get_advances): Test for HVAR and VVAR.
2016-12-20 10:52:26 +01:00
Werner Lemberg 5743df7718 [base] Fix invalid mac font recursion.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=304

* src/base/ftobjs.c (FT_Open_Face): Code moved to...
(ft_open_face_internal): ... this function.
Add a parameter to control whether we try special Mac font handling
in case of failure.
(FT_Open_Face, FT_New_Face, FT_New_Memory_Face,
open_face_from_buffer): Use `ft_open_face_internal'.
2016-12-18 21:01:03 +01:00
Werner Lemberg ca3d401993 * src/cff/cffobjs.c (cff_face_init): Make named instances work. 2016-12-18 18:23:19 +01:00
Werner Lemberg a8652c59da [truetype, cff] Extend `get_var_blend' function of MM service.
In particular, we need access to named instance data.

* include/freetype/internal/services/svmm.h (FT_Get_Var_Blend_Func):
Add argument for `FT_MM_Var'.

* src/cff/cffload.c (cff_get_var_blend): Updated.
* src/cff/cffload.h: Updated.

* src/cff/cf2ft.c (cf2_getNormalizedVector): Updated.

* src/truetype/ttgxvar.c (tt_get_var_blend): Updated.
Accept value `NULL' for arguments.
* src/truetype/ttgxvar.h: Updated.
2016-12-18 18:12:03 +01:00
Werner Lemberg 25f3ac2b9e [sfnt] Handle `fvar' with zero axes as a non-MM font.
This is better behaviour than exiting with an error.

* include/freetype/internal/tttypes.h (TT_Face): Add `use_fvar'
field.

* src/sfnt/sfobjs.c (sfnt_init_face): Compute `use_fvar', also
updating the validation code.
Use `use_fvar' to compute FT_FACE_FLAG_MULTIPLE_MASTERS.

* src/truetype/ttgxvar.c (TT_Get_MM_Var): Remove `fvar' validation
code.
2016-12-18 15:50:18 +01:00
Werner Lemberg eb6d02087b Minor GX code shuffling.
* include/freetype/internal/tttypes.h (TT_Face): Move
`is_default_instance' into TT_CONFIG_OPTION_GX_VAR_SUPPORT
block.

* src/sfnt/sfobjs.c (sfnt_init_face): Updated.
* src/truetype/ttgload.c (IS_DEFAULT_INSTANCE): New macro.
(TT_Load_Glyph): Use it.
2016-12-18 09:29:58 +01:00
Werner Lemberg 8f633a08f1 [cff] Better handling of non-CFF font formats.
* src/cff/cffload.c (cff_font_load): Pure CFFs don't have a
signature, so return `FT_Err_Unknown_File_Format' more often.
2016-12-18 06:42:31 +01:00
Werner Lemberg 4cd6817951 * src/cff/cffload.c (cff_build_blend_vector): Remove redundant code. 2016-12-17 22:52:50 +01:00
Werner Lemberg db17ceb4c0 * src/truetype/ttobjs.c (tt_face_init): Simplify conditional code. 2016-12-17 13:39:31 +01:00
Werner Lemberg 7c75b166c8 [sfnt, truetype] Various sanitizing fixes.
* src/sfnt/sfobjs.c (sfnt_init_face): If the axis count in `fvar' is
zero, set `num_instances' to zero.

* src/truetype/ttgxvar.c (TT_Get_MM_Var): Handle `fvar' table with
zero axes as invalid.

* src/truetype/ttobjs.c (tt_face_init): Improve logic of loading
`loca', `cvt', `fpgm', and `prep' table.
2016-12-17 13:28:24 +01:00
Werner Lemberg 3b125e9594 Improve tracing of `FT_Open_Face'.
* src/base/ftobjs.c (FT_Open_Face): Return info on number of
available faces and numbered instances, or the indices of the
requested face and numbered instance.

* src/sfnt/sfobjs. (sfnt_open_font): Trace number of subfonts.
2016-12-17 10:02:19 +01:00
Werner Lemberg 50ff6c1eab * src/cff/cffload.c (cff_load_private_dict): Always init `blend'.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=295
2016-12-17 07:44:46 +01:00
Werner Lemberg df2cf43e94 [truetype] Fix `cvar' sanity test.
Reported by Dave Arnold.

* src/truetype/ttgxvar.c (tt_face_vary_cvt): Use tuple count mask.
2016-12-16 11:38:20 +01:00
Werner Lemberg 6862024854 [cff, truetype] Remove compiler warnings; fix `make multi'.
* src/cff/cf2font.h: Include `cffload.h'.

* src/cff/cffload.c: Include FT_MULTIPLE_MASTERS_H and
FT_SERVICE_MULTIPLE_MASTERS_H.
(cff_vstore_load): Eliminate `vsSize'.
(cff_load_private_dict): Tag as `FT_LOCAL_DEF'.

* src/cff/cffload.h: Include `cffobjs.h'.
Provide declaration for `cff_load_private_dict'.

* src/truetype/ttgxvar.c (ft_var_load_hvar): Eliminate
`minorVersion' and `map_offset'.
2016-12-16 11:15:17 +01:00
Werner Lemberg beecf80a6d [cff] Fix heap buffer overflow (#49858).
* src/cff/cffparse.c (cff_parser_run): Add one more stack size
check.
2016-12-16 08:52:03 +01:00
Werner Lemberg 01658be6fb Fix clang warnings.
* src/cff/cffload.c (cff_blend_doBlend): Add cast.
(cff_subfont_load): Set `error' correctly.

* src/sfnt/ttmtx.c (tt_face_get_metrics): Typo.
2016-12-15 23:10:59 +01:00
Dave Arnold edf4014854 [cff] Implement CFF2 support (2/2).
The font variation code.  All parts dependent on the GX code in the
`truetype' module are guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
In other words, you can still compile the `cff' module without
defining TT_CONFIG_OPTION_GX_VAR_SUPPORT (which brings you CFF2
support without font variation).

* src/cff/cf2font.c (cf2_font_setup): Add support for font
variation.
* src/cff/cf2font.h (CF2_Font): Add fields for variation data.

* src/cff/cf2ft.c (cf2_free_instance): Free blend data.
(cf2_getVStore, cf2_getNormalizedVector): New functions.
* src/cff/cf2ft.h: Updated.

* src/cff/cf2intrp.c: Include `cffload.h'.
(cf2_cmdRESERVED_15, cf2_cmdRESERVED_16): Replace with...
(cf2_cmdVSINDEX, cf2_cmdBLEND): ... this new enum values.
(cf2_doBlend): New function.
(cf2_interpT2CharString): Handle `vsindex' and `blend' opcodes.

* src/cff/cffload.c (FT_fdot14ToFixed): New macro.
(cff_vstore_done, cff_vstore_load): New functions.
(cff_blend_clear, cff_blend_doBlend, cff_blend_build_vector,
cff_blend_check_vector): New functions.
(cff_load_private_dict): Add arguments for blend vector.
Handle blend data.
(cff_subfont_load, cff_subfont_done): Updated.
(cff_font_load): Handle CFF2 variation store data.
(cff_font_done): Updated.
* src/cff/cffload.h: Include `cffparse.h'.
Updated.

* src/cff/cffobjs.c (cff_face_done): Updated.

* src/cff/cffparse.c: Include `cffload.h'.
(cff_parse_num): Handle internal value 255.
(cff_parse_vsindex, cff_parse_blend): New functions.
(CFF_FIELD_BLEND): New macro.
(cff_parser_run): Updated.
* src/cff/cffparse.h (cff_kind_blend): New enum value.

* src/cff/cfftoken.h: Handle `vstore', `vsindex', and `blend'
dictionary values.

* src/cff/cfftypes.h (CFF_VarData, CFF_AxisCoords, CFF_VarRegion,
CFF_VStore, CFF_Blend): New structures.
(CFF_FontRecDict): Add `vstore_offset' field.
(CFF_Private): Add `vsindex' field.
(CFF_SubFont): Add fields for blend data.
(CFF_Font): Add `vstore' field.

* src/truetype/ttgxvar.c (TT_Get_MM_Var): `CFF2' is equal to `gvar',
since glyph variation data is directly embedded.
(TT_Set_MM_Blend): Don't load `gvar' table for CFF2 fonts.
2016-12-15 21:56:44 +01:00
Dave Arnold 9f62d2ca06 [cff] Implement CFF2 support (1/2).
This commit does not contain the blend code for font variation
support, which follows in another commit.

You should ignore whitespace while inspecting this commit.

* include/freetype/internal/tttypes.h (TT_Face): Add `isCFF2'
member.

* src/cff/cf2font.h (CF2_Font): Add `isCFF2' member.

* src/cff/cf2ft.c (cf2_decoder_parse_charstrings): Handle `isCFF2'
flag.
(cf2_getMaxstack): New function.
* src/cff/cf2ft.h: Updated.

* src/cff/cf2intrp.c (cf2_escRESERVED_38): New enum.
(cf2_interpT2CharString): Handle CFF2 differences.
Add tracing message for errors.

* src/cff/cffdrivr.c (cff_get_glyph_name, cff_get_name_index):
Update for CFF2.

* src/cff/cffload.c (FT_FIXED_ONE): New macro.
(cff_index_init, cff_index_load_offsets, cff_index_access_element,
cff_index_get_name, cff_ft_select_get, cff_load_private_dict,
cff_subfont_load, cff_font_load): Handle CFF2.
* src/cff/cffload.h: Updated.

* src/cff/cffobjs.c (cff_face_init): Handle CFF2.

* src/cff/cffparse.c (cff_parse_maxstack): New function.
(CFFCODE_TOPDICT, CFFCODE_PRIVATE): Removed
* src/cff/cffparse.h (CFF2_MAX_STACK, CFF2_DEFAULT_STACK): New
macros.
(CFF2_CODE_TOPDICT, CFF2_CODE_FONTDICT, CFF2_CODE_PRIVATE): New
macros.

* src/cff/cfftoken.h: Add fields for CFF2 dictionaries (but no blend
stuff).

* src/cff/cfftypes.h (CFF_Index): Add `hdr_size' field.
(CFF_FontRecDict): Add `maxstack' field.
(CFF_Private): Add `subfont' field.
(CFF_Font): Add `top_dict_length' and `cff2' fields.

* src/sfnt/sfobjs.c (sfnt_load_face): Handle `CFF2' table.
2016-12-15 20:27:47 +01:00
Werner Lemberg 3bd79cc257 [truetype] Provide HVAR advance width variation as a service.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

* src/truetype/ttdriver.c (tt_service_metrics_variations): Updated.

* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Prevent
double adjustment of advance width.

* src/sfnt/ttmtx.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(tt_face_get_metrics): Apply metrics variations.
2016-12-15 14:34:57 +01:00
Dave Arnold aa0c4b4f55 [truetype] Provide function to apply `HVAR' advance width variation.
* src/truetype/ttgxvar.c (tt_hadvance_adjust): New function.
* src/truetype/ttgxvar.h: Updated.
2016-12-15 14:04:51 +01:00
Dave Arnold 097cd874ee [truetype] Add `HVAR' table parsing.
Note that this is not complete yet; it only handles advance width
variation.

Activation of the code follows in another commit.

* include/freetype/ftmm.h (FT_Var_Named_Style): Add `psid' member.

* src/truetype/ttgxvar.h (GX_HVarData, GX_AxisCoords, GX_HVarRegion,
GX_HVStore, GX_WidthMap): New auxiliary structures for...
(GX_HVarTable): ... HVAR main structure.
(GX_BlendRec): Add data for HVAR loading.

* src/truetype/ttgxvar.c (FT_FIXED_ONE, FT_fdot14ToFixed,
FT_intToFixed, FT_fixedToInt): New macros.
(ft_var_load_hvar): New function.
(TT_Get_MM_Var): Updated.
(tt_done_blend): Deallocate HVAR data.
2016-12-15 12:58:26 +01:00
Dave Arnold abd5858102 [cff] Extend number parsing.
The forthcoming CFF2 support needs a dynamic parsing limit.

* src/cff/cffparse.c (cff_parse_num, do_fixed, cff_parse_fixed,
cff_parse_fixed_scaled, cff_parse_fixed_dynamic): Add argument for
parser.
(cff_parse_font_matrix, cff_parse_font_bbox, cff_parse_private_dict,
cff_parse_multiple_master, cff_parse_cid_ros, cff_parser_run): Updated.

* src/cff/cffparse.h (cff_parse_num): Export locally.
2016-12-15 12:17:22 +01:00
Dave Arnold 010e0614f2 [cff] Implement dynamic stack size for Adobe engine.
This also adds `cf2_stack_setReal' and `cf2_stack_pop', needed for
the forthcoming CFF2 support.

* src/cff/cf2stack.c (cf2_stack_init): Add argument for stack size.
(cf2_stack_free): Deallocate stack.
(cf2_stack_count, cf2_stack_pushInt, cf2_stack_pushFixed,
cf2_stack_popInt, cf2_stack_popFixed, cf2_stack_getReal,
cf2_stack_clear): Updated.
(cf2_stack_setReal, cf2_stack_pop): New functions.

* src/cff/cf2stack.h (CF2_Stack): Add `stackSize' member.
Update function declarations.

* src/cff/cf2intrp.c (cf2_interpT2CharString): Updated.

* src/cff/cffparse.c (cff_parser_init): Add parameter for stack
size; return error code.
(cff_parser_done): New function.
(cff_parser_run): Updated.

* src/cff/cffparse.h (CFF_Parser): Add `stackSize' member and make
`stack' a pointer.
Update function declarations.

* src/cff/cffload.c (cff_load_private_dict, cff_subfont_load):
Updated.
2016-12-15 11:22:15 +01:00
Dave Arnold 41533b958c [cff] Code shuffling.
* src/cff/cfftypes.h (CFF_Font): Add `library' and `base_offset'
fields.

* src/cff/cffload.c (cff_subfont_load): Change last argument to
`CFF_Font'
Split off parsing of private dictionary into...
(cff_load_private_dict): ...this new function.
(cff_font_load): Updated.
2016-12-15 00:00:45 +01:00
Werner Lemberg 0918325e3f [sfnt, truetype] Add framework for Metrics Variations service.
No effect yet; service functions will be implemented later on.

Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

* include/freetype/internal/services/svmetric.h: New file.

* include/freetype/internal/ftserv.h
(FT_SERVICE_METRICS_VARIATIONS_H): New macro.

* include/freetype/internal/tttypes.h (TT_Face): New field `var'.

* src/sfnt/sfobjs.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(sfnt_init_face): Initialize `face->var'.

* src/truetype/ttdriver.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(tt_service_metrics_variations): New service.
(tt_services): Updated.

* src/truetype/ttpic.h: Updated.
2016-12-14 20:44:11 +01:00
Werner Lemberg c628a7dfba [cff] Add Multiple Masters service.
The code simply uses the MM functions from the `truetype' module.

Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

* include/freetype/internal/tttypes.h (TT_Face): New field `mm'.

* src/cff/cffdrivr.c: Include FT_SERVICE_MULTIPLE_MASTERS_H.
(cff_set_mm_blend, cff_get_mm_blend, cff_get_mm_var,
cff_set_var_design, cff_get_var_design): New functions.
(cff_service_multi_masters): New service.
(cff_services): Updated.

* src/cff/cffload.c (cff_get_var_blend, cff_done_blend): New
functions.
* src/cff/cffload.h: Updated.

* src/cff/cffpic.h (CFF_SERVICE_MULTI_MASTERS_GET): New macro.

* src/sfnt/sfobjs.c: Include FT_SERVICE_MULTIPLE_MASTERS_H.
(sfnt_init_face): Initialize `face->mm'.
2016-12-14 19:31:42 +01:00
Werner Lemberg a7dc0c3554 Extend functionality of `ft_module_get_service'.
It can now differentiate between local and global searches.

* src/base/ftobjs.c (ft_module_get_service): Add `global' argument.
(FT_Get_TrueType_Engine_Type): Updated.

* src/cff/cffdrivr.c (cff_get_ps_name, cff_get_cmap_info): Updated.

* include/freetype/internal/ftobjs.h: Updated.
* include/freetype/internal/ftserv.h (FT_FACE_FIND_GLOBAL_SERVICE):
Updated.
2016-12-14 18:54:21 +01:00
Werner Lemberg ab22b43bac * src/truetype/ttgxvar.c (tt_get_var_blend): Fix compiler warning. 2016-12-14 18:34:55 +01:00
Werner Lemberg 4e07516e90 [sfnt, cff] Minor preparations.
* include/freetype/tttags.h (TTAG_CFF2, TTAG_HVAR, TTAG_MVAR,
TTAG_VVAR): New SFNT table tags.

* src/cff/cf2fixed.h (CF2_FIXED_ONE, CF2_FIXED_EPSILON): Add cast.
2016-12-14 18:25:44 +01:00
Werner Lemberg 8b174b4b96 [truetype, type1] Add `get_var_blend' to MM service.
For internal use; we want to share code between the forthcoming CFF2
support and TrueType.

* include/freetype/internal/services/svmm.h (FT_Get_Var_Blend_Func):
New typedef.
(MultiMasters): Add `get_var_blend'.
(FT_Service_MultiMasters): Updated.

* src/truetype/ttgxvar.c (tt_get_var_blend): 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.
2016-12-11 09:16:52 +01:00
Werner Lemberg 27bdb36cbe [truetype, type1] Add `done_blend' to MM service.
For internal use; we want to share code between the forthcoming CFF2
support and TrueType.

* include/freetype/internal/services/svmm.h (FT_Done_Blend_Func):
New typedef.
(MultiMasters): Add `done_blend'.
(FT_Service_MultiMasters): Updated.

* src/truetype/ttgxvar.c (tt_done_blend): Use `TT_Face' as argument.
* src/truetype/ttgxvar.h: Updated.

* src/truetype/ttobjs.c (TT_Face_Done): Updated.

* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.
* src/type1/t1driver.c (t1_service_multi_masters): Updated.
2016-12-10 09:56:03 +01:00
Werner Lemberg 3205a44d01 [sfnt] Revert change from 2016-12-08.
I missed the functionality of `ft_module_get_service', which makes
the change unnecessary.
2016-12-09 06:55:34 +01:00