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320 Commits

Author SHA1 Message Date
Werner Lemberg
9ac9060df0 [GSoC] src/*.*: Convert block comments to `light' style. 
This monster commit was created by applying Nikhil's scripts
`docconverter.py' and `markify.py' to all C header and source files,
followed up by minor manual clean-up.

No change in functionality, of course.

I used commit f7419907bc6044b9b7057f9789866426c804ba82 from
https://github.com/nikramakrishnan/freetype-docs.git.
 2018-06-03 09:08:41 +02:00
Werner Lemberg
67994e8221 * src/truetype/ttinterp.c (Ins_MIRP): Use SUB_LONG; avoid FT_ABS. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8706
 2018-06-02 19:51:03 +02:00
Werner Lemberg
2a1597826a [truetype] Integer overflow issues. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7739

* src/truetype/ttinterp.c (Ins_CEILING): Use FT_PIX_CEIL_LONG.
 2018-04-17 12:25:17 +02:00
Werner Lemberg
70ac167c47 [truetype] Integer overflow issues. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7718

* src/truetype/ttinterp.c (Ins_MIRP): Use ADD_LONG.
 2018-04-16 10:39:10 +02:00
Werner Lemberg
235b1e2fe6 [truetype]: Limit `SLOOP' bytecode argument to 16 bits. 
This fixes

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7707

* src/truetype/ttinterp.c (Ins_SLOOP): Do it.
 2018-04-15 21:55:04 +02:00
Werner Lemberg
827ca3bcf2 [truetype] Integer overflow issues. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7652

* src/truetype/ttinterp.c (Ins_MDAP): Use SUB_LONG.
 2018-04-14 07:20:31 +02:00
Werner Lemberg
bd9400bd46 [truetype] Integer overflow issues. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7453

* src/truetype/ttinterp.c (Round_Super, Round_Super_45): Use
ADD_LONG and SUB_LONG.
 2018-04-09 21:28:37 +02:00
Werner Lemberg
efd13c5d1b * src/truetype/ttinterp.c (TT_RunIns): Fix tracing arguments. 2018-03-01 22:17:54 +01:00
Werner Lemberg
4a03f17449 [truetype] Integer overflow issues. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6027

* src/truetype/ttinterp.c (Ins_MSIRP, Ins_MIAP, Ins_MIRP): Use
SUB_LONG; avoid FT_ABS.
 2018-02-06 02:23:19 +01:00
Werner Lemberg
29c759284e * src/truetype/ttinterp.c (Ins_GETVARIATION): Avoid NULL reference. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5736
 2018-01-27 14:43:43 +01:00
Werner Lemberg
0a0c22569d Update copyright year. 2018-01-02 09:33:57 +01:00
Werner Lemberg
98ba0c4a37 New `ftdriver.h' file, covering all driver modules. 
This reduces redundancy and increases synergy; it also reduces the
number of header files.

* include/freetype/config/ftheader.h (FT_DRIVER_H): New macro.
(FT_AUTOHINTER_H, FT_CFF_DRIVER_H, FT_TRUETYPE_DRIVER_H,
FT_PCF_DRIVER_H, FT_TYPE1_DRIVER_H): Make them aliases to
FT_DRIVER_H.

* include/freetype/ftautoh.h, include/freetype/ftcffdrv.h,
include/freetype/ftpcfdrv.h, include/freetype/ftt1drv.h,
include/freetype/ftttdrv.h: Replaced with...
* include/freetype/ftdriver.h: ...this new file.
(FT_CFF_HINTING_ADOBE, FT_T1_HINTING_ADOBE): Renamed to...
(FT_HINTING_ADOBE): ... this new macro.
(FT_CFF_HINTING_FREETYPE, FT_T1_HINTING_FREETYPE): Renamed to...
(FT_HINTING_FREETYPE): ... this new macro.

* src/*/*: Updated accordingly.
 2017-12-08 18:41:49 +01:00
Werner Lemberg
71fecc539e Improve tracing messages by using singular and plural forms. 
* src/*/*.c: Implement it.
 2017-12-05 12:06:29 +01:00
Ben Wagner
c06b9cf56d [truetype] Really, really fix #52082. 
* src/truetype/ttinterp.c (Ins_MDRP): Correct conditional.
 2017-09-28 19:08:38 +02:00
Ben Wagner
63be40bccf [truetype] Really fix #52082. 
* src/truetype/ttinterp.c (Ins_MDRP): Correct conditional.
 2017-09-23 00:44:59 +02:00
Werner Lemberg
6d04bd991b [truetype] Integer overflow (#52082). 
* src/truetype/ttinterp.c (Ins_MDRP): Avoid FT_ABS.
 2017-09-21 21:22:51 +02:00
Werner Lemberg
eaa9adf325 [truetype] Integer overflows. 
Changes triggered by

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3429

* src/truetype/ttinterp.c (Ins_SHPIX, Ins_DELTAP): Use NEG_LONG.
(Ins_MIAP): Use SUB_LONG.
 2017-09-20 08:00:05 +02:00
Werner Lemberg
0aca17cf53 [truetype] Integer overflow. 
Changes triggered by

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3107

* src/truetype/ttinterp.c (Ins_MDRP, Ins_MIRP, Ins_ALIGNPTS): Use
NEG_LONG.
 2017-08-22 08:25:14 +02:00
Werner Lemberg
17196b7c74 [truetype] Integer overflow. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2868

* src/truetype/ttinterp.c (Ins_ALIGNRP): Use NEG_LONG.
 2017-08-05 18:58:34 +02:00
Nikolaus Waxweiler
7f44c2db24 [truetype] Do not set any ClearType flags in v40 monochrome mode. 
This fixes weird behavior of instructions that resulted in rendering
differences between v35 and v40 in monochrome mode, e.g., in
`timesbi.ttf'.

* src/truetype/ttinterp.c (Ins_GETINFO)
[TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL]: Check
`subpixel_hinting_lean'.
 2017-08-03 06:15:30 +02:00
Werner Lemberg
ca799e9be5 [truetype] Integer overflow. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2455

* src/truetype/ttinterp.c (Ins_SCFS): Use SUB_LONG.
 2017-07-03 06:27:52 +02:00
Werner Lemberg
dde8f5abbe [truetype] Integer overflows. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2384
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2391

* src/base/ftcalc.c (FT_MulDiv, FT_MulDiv_No_Round, FT_DivFix): Use
NEG_LONG.

* src/truetype/ttinterp.c (Ins_SxVTL): Use NEG_LONG.
 2017-06-27 06:16:04 +02:00
Werner Lemberg
b27cef27ff [truetype] Integer overflows. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2364

* src/truetype/ttinterp.c (Ins_ISECT): Use NEG_LONG.
 2017-06-24 20:17:46 +02:00
Werner Lemberg
298e2ea5a6 [cff, truetype] Integer overflows. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2323
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2328

* src/cff/cf2blues.c (cf2_blues_capture): Use ADD_INT32 and
SUB_INT32.

* src/truetype/ttinterp.c (Ins_SDPVTL): Use SUB_LONG and NEG_LONG.
 2017-06-22 11:52:43 +02:00
Werner Lemberg
8c763fb1be [cff, truetype] Integer overflows. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2300
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2313

* src/cff/cf2hints.c (cf2_hintmap_adjustHints): Use ADD_INT32.

* src/truetype/ttinterp.c (Ins_ABS): Avoid FT_ABS.
 2017-06-20 07:49:52 +02:00
Werner Lemberg
4dc00cf5c0 [truetype] Integer overflows. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2270
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2278

* src/truetype/ttinterp.c (Ins_MDRP, _iup_worker_interpolate): Use
ADD_LONG and SUB_LONG.
 2017-06-16 13:33:09 +02:00
Werner Lemberg
5c402d97af [cff, truetype] Integer overflows. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2216
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2218

* src/cff/cf2fixed.h (cf2_fixedAbs): Use NEG_INT32.

* src/truetype/ttinterp.c (Ins_IP): Use SUB_LONG.
 2017-06-13 06:56:48 +02:00
Werner Lemberg
9038837ee2 [cff, truetype] Integer overflows. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2144
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2151
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2153
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2173
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2186

* src/cff/cf2blues.c (cf2_blues_init): Use SUB_INT32.

* src/truetype/ttinterp.c (Round_None, Round_To_Grid,
Round_To_Half_Grid, Round_Down_To_Grid, Round_Up_To_Grid,
Round_To_Double_Grid, Round_Super, Round_Super_45): Use ADD_LONG,
SUB_LONG, NEG_LONG, FT_PIX_ROUND_LONG, FT_PIX_CEIL_LONG,
FT_PAD_ROUND_LONG
(Ins_SxVTL, Ins_MIRP): Use SUB_LONG.
(_iup_worker_shift): Use SUB_LONG and ADD_LONG.
 2017-06-09 20:42:46 +02:00
Werner Lemberg
dcd8de272f */*: Remove `OVERFLOW_' prefix. 
This increases readability.
 2017-06-09 11:21:58 +02:00
Werner Lemberg
7bffeacd7e [cff, truetype] Integer overflows. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2133
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2137

* src/cff/cf2hints.c (cf2_hint_init): Use OVERFLOW_SUB_INT32.

* src/truetype/ttinterp.c (PROJECT, DUALPROJ): Use
OVERFLOW_SUB_LONG.
 2017-06-07 17:08:01 +02:00
Werner Lemberg
9fa8a2997f [cff, truetype] Integer overflows. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2075
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2088

* src/cff/cf2font.c (cf2_font_setup): Use OVERFLOW_MUL_INT32.

* src/truetype/ttinterp.c (Ins_ISECT): Use OVERFLOW_MUL_LONG,
OVERFLOW_ADD_LONG, and OVERFLOW_SUB_LONG.
 2017-06-04 20:43:08 +02:00
Werner Lemberg
addb2dddb6 [base, cff, truetype] Integer overflows. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2060
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2062
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2063
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2068

* src/base/ftobjs.c (ft_glyphslot_grid_fit_metrics): Use
OVERFLOW_ADD_LONG and OVERFLOW_SUB_LONG.

* src/cff/cf2blues.c (cf2_blues_capture), src/cff/cf2hints.c
(cf2_hintmap_adjustHints): Use OVERFLOW_SUB_INT32.

* src/truetype/ttgload.c (compute_glyph_metrics): User
OVERFLOW_SUB_LONG.

* src/truetype/ttinterp.c (Direct_Move, Direct_Move_Orig,
Direct_Move_X, Direct_Move_Y, Direct_Move_Orig_X,
Direct_Move_Orig_Y, Move_Zp2_Point, Ins_MSIRP): Use
OVERFLOW_ADD_LONG and OVERFLOW_SUB_LONG.
 2017-06-03 21:05:42 +02:00
Werner Lemberg
1ea343228d [cff, truetype] Integer overflows. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2047
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2057

* src/cff/cf2hints.c (cf2_hintmap_map): Use OVERFLOW_SUB_INT32.

* src/truetype/ttinterp.c (Ins_ADD): Use OVERFLOW_ADD_LONG.
(Ins_SUB): Use OVERFLOW_SUB_LONG.
(Ins_NEG): Use NEG_LONG.
 2017-06-03 06:52:13 +02:00
Werner Lemberg
8d435c463d * src/truetype/ttinterp.c (TT_RunIns): Adjust loop counter again. 
Problem reported by Marek Kašík <mkasik@redhat.com>.

The problematic font that exceeds the old limit is Padauk-Bold,
version 3.002, containing bytecode generated by a buggy version of
ttfautohint.
 2017-06-01 07:09:44 +02:00
Nikolaus Waxweiler
a0455468fd [truetype] Always use interpreter v35 for B/W rendering (#51051). 
* src/truetype/ttgload.c (tt_loader_init)
[TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL]: Adjust
`subpixel_hinting_lean', `grayscale_cleartype', and
`vertical_lcd_lean' accordingly.

* src/truetype/ttinterp.c (Ins_GETINFO): Updated.
(TT_RunIns): Update `backward_compatibility' flag.
 2017-05-20 07:28:46 +02:00
Werner Lemberg
8cd31eb7b0 */*: s/backwards compatibility/backward compatibility/. 2017-05-03 23:54:29 +02:00
Werner Lemberg
5f18d867c0 [truetype] Do linear scaling for FT_LOAD_NO_HINTING (#50470). 
* src/truetype/ttobs.h (TT_SizeRec): Add field `hinted_metrics' to
hold hinted metrics.
Make `metrics' a pointer so that `tt_glyph_load' can easily switch
between metrics.

* src/truetype/ttdriver.c (tt_size_request): Updated.
(tt_glyph_load): Use top-level metrics if FT_LOAD_NO_HINTING is
used.

* src/truetype/ttgload.c (TT_Hint_Glyph, TT_Process_Simple_Glyph,
TT_Process_Composite_Component, load_truetype_glyph,
compute_glyph_metrics, TT_Load_Glyph): Updated.

* src/truetype/ttinterp.c (TT_Load_Context): Updated.

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

* src/truetype/ttsubpix.c (sph_set_tweaks): Updated.
 2017-04-26 11:40:28 +02:00
Werner Lemberg
093c182058 [truetype] Avoid reexecution of fpgm' and prep' in case of error. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=981

* include/freetype/fterrdef.h (FT_Err_DEF_In_Glyf_Bytecode): New
error code.

* src/truetype/ttinterp.c (Ins_FDEF, Ins_IDEF): Prohibit execution
of these two opcodes in `glyf' bytecode.
(TT_RunIns): Don't enforce reexecution of `fpgm' and `prep' bytecode
in case of error since function tables can no longer be modified
(due to the changes in `Ins_FDEF' and `Ins_IDEF').  This change can
enormously speed up handling of broken fonts.
 2017-04-03 11:37:33 +02:00
Werner Lemberg
3e79254ae7 * src/truetype/ttinterp.c (TT_RunIns): Adjust loop counter (#50573). 
The problematic font that exceeds the old limit is Lato-Regular,
version 2.007, containing bytecode generated by a buggy version of
ttfautohint.
 2017-03-18 10:06:15 +01:00
Werner Lemberg
13fa85a246 [truetype] Another limitation for bytecode loop count maximum. 
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=900

* src/truetype/ttinterp.c (TT_RunIns): Limit `loopcall_counter_max'
by number of glyphs also.
 2017-03-18 09:42:58 +01:00
Werner Lemberg
9931175dcc Improve `make multi'. 
* src/autofit/aflatin2.c: Guard file with FT_OPTION_AUTOFIT2.

* src/base/ftmac.c: Guard more parts of the file with FT_MACINTOSH.

* src/psaux/afmparse.c: Guard file with T1_CONFIG_OPTION_NO_AFM.

* src/sfnt/pngshim.c: Guard file with
TT_CONFIG_OPTION_EMBEDDED_BITMAPS also.

* src/sfnt/ttbdf.c: Avoid empty source file.
* src/sfnt/ttpost.c: Guard file with
TT_CONFIG_OPTION_POSTSCRIPT_NAMES.
* src/sfnt/ttsbit.c: Guard file with
TT_CONFIG_OPTION_EMBEDDED_BITMAPS.

* src/truetype/ttgxvar.c, src/truetype/ttinterp.c: Avoid empty
source file.

* src/truetype/ttsubpix.c: Guard file with
TT_USE_BYTECODE_INTERPRETER also.

* src/type1/t1afm.c: Guard file with T1_CONFIG_OPTION_NO_AFM.

* src/autofit/autofit.c, src/base/ftbase.c, src/cache/ftcache.c,
src/cff/cff.c, src/cid/type1cid.c, src/gxvalid/gxvalid.c,
src/pcf/pcf.c, src/pfr/pfr.c, src/psaux/psaux.c,
src/pshinter/pshinter.c, src/psnames/psnames.c, src/raster/raster.c,
src/sfnt/sfnt.c, src/smooth/smooth.c, src/truetype/truetype.c,
src/type1/type1.c, src/type42/type42.c: Remove conditionals; sort
entries.
 2017-03-18 07:06:49 +01:00
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
Werner Lemberg
563ae78022 Update copyright year. 2017-01-04 20:16:34 +01:00
Werner Lemberg
f80c4473b6 Replace ++foo' and --foo' with foo++' and foo--', resp. 2016-12-26 23:57:45 +01:00
Werner Lemberg
4441f7b246 Replace foo == NULL' and foo != NULL' with !foo' and foo', resp. 
Other minor formatting.
 2016-12-26 17:08:17 +01:00
Werner Lemberg
37c72f66a5 Minor formatting. 2016-12-25 22:55:25 +01:00
Werner Lemberg
328d68449d [truetype] Remove clang warnings. 
* src/truetype/ttinterp.h (TT_ExecContextRec): Using `FT_ULong' for
loop counter handling.

* src/truetype/ttinterp.c: Updated.
(Ins_SCANTYPE): Use signed constant.
(TT_RunIns): Ensure `num_twilight_points' is 16bit.
 2016-10-29 00:18:56 +02:00
Werner Lemberg
5081674c5f [truetype] Fix SCANTYPE instruction (#49394). 
* src/truetype/ttinterp.c (Ins_SCANTYPE): Only use lower 16bits.
 2016-10-22 19:16:08 +02:00
Werner Lemberg
2ecf89b481 */*: s/FT_MEM_ZERO/FT_ZERO/ where appropriate. 2016-09-28 19:06:21 +02:00