Commit Graph

4499 Commits

Author SHA1 Message Date
Behdad Esfahbod 55bbb98f5c [truetype] Fix loading of named instances.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Preserve file position
while loading the `avar' table.
2017-08-01 09:17:02 +02:00
Werner Lemberg ce367774d2 [sfnt, truetype] Minor adjustments for OpenType 1.8.2.
* src/sfnt/sfobjs.c (sfnt_load_face): The units per EM value has now
(tighter) limits.

* src/truetype/ttgload.c (load_truetype_glyph): The new OpenType
version explicitly allows all negative values for the number of
contours if we have a composite glyph (this is for better backwards
compatibility I guess), but it still recommends value -1.
2017-08-01 08:24:51 +02:00
Werner Lemberg 933f4cbe79 [cff] Integer overflow.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2738

* src/cff/cf2hints.c (cf2_glyphpath_computeOffset,
cf2_glyphpath_curveTo): Use ADD_INT32.
2017-07-26 23:32:32 +02:00
Werner Lemberg fe0a7d9df5 [base] Fix memory leak.
Reported as

  https://bugs.chromium.org/p/chromium/issues/detail?id=738362

* src/base/ftglyph.c (FT_Get_Glyph): Do proper deallocation in case
of error.
2017-07-13 10:25:42 +02:00
Werner Lemberg 134de096e0 [base] Integer overflow.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2573

* src/base/ftobjs.c (ft_glyphslot_grid_fit_metrics): Use
FT_PIX_CEIL_LONG and FT_PIX_ROUND_LONG.
2017-07-12 22:16:37 +02:00
Werner Lemberg 3d083fc213 * src/truetype/ttpload.c (tt_face_get_location): Off-by-one typo.
Also improve tracing message.

Problem reported as

  https://bugs.chromium.org/p/chromium/issues/detail?id=738919
2017-07-12 00:24:48 +02:00
Hin-Tak Leung 39af82ebbf Changelog: typo, chromium issue id is 2276 instead of 2278
Signed-off-by: Hin-Tak Leung <htl10@users.sourceforge.net>
2017-07-11 23:43:08 +02:00
Werner Lemberg 9ea83c7889 [cff] Integer overflow.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2517

* src/cff/cf2blues.c (cf2_blues_capture): Use SUB_INT32.
2017-07-07 17:09:43 +02:00
Werner Lemberg cf8d9b4ce3 * src/sfnt/ttcmap.c (tt_cmap_unicode_class_rec): Fix warning. 2017-07-05 23:07:01 +02:00
Werner Lemberg 4261e497d8 * src/truetype/ttgxvar.c (FT_Stream_SeekSet): Fix warning (#51395). 2017-07-05 23:00:23 +02:00
Werner Lemberg 1c85479d2d [truetype] Prevent address overflow (#51365).
* src/truetype/ttgxvar.c (FT_Stream_SeekSet): Add guard.
2017-07-04 08:08:54 +02:00
Alexei Podtelezhnikov c56d8851ea * src/base/ftlcdfil.c (ft_lcd_filter_fir): Improve code. 2017-07-03 22:49:07 -04:00
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
Alexei Podtelezhnikov abeb28f161 * src/sfnt/sfobjs.c (sfnt_load_face): Ignore No_Unicode_Glyph_Name. 2017-07-01 16:48:32 -04:00
Ben Wagner 7819aeb622 Avoid Microsoft compiler warnings (#51331).
While clang's sanitizer recommends a cast to unsigned for safe
negation (to handle -INT_MIN), both MSVC and Visualc emit warning
C4146 if an unsigned value gets negated.

* include/freetype/internal/ftcalc.h (NEG_LONG, NEG_INT32),
src/base/ftcalc.c (FT_MOVE_SIGN): Replace negation with a
subtraction.
2017-06-28 22:57:41 +02:00
Werner Lemberg 2e7bb5e825 * src/cff/cffparse.c (do_fixed): Fix typo.
Spotted by chris <chris@gcjd.org>.
2017-06-27 16:56:38 +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
Alexei Podtelezhnikov 75cb071b3f [sfnt] Synthesize a Unicode charmap if one is missing.
* src/sfnt/ttcmap.h (tt_cmap_unicode_class_rec): Declare it.
* src/sfnt/ttcmap.c (tt_get_glyph_name, tt_cmap_unicode_init,
tt_cmap_unicode_done, tt_cmap_unicode_char_index,
tt_cmap_unicode_char_next, tt_cmap_unicode_class_rec): Implement
synthetic Unicode charmap class.
(tt_get_cmap_info): Make sure the callback is available.

* src/sfnt/sfobjs.c (sfnt_load_face)
[FT_CONFIG_OPTION_POSTSCRIPT_NAMES]: If Unicode charmap is missing,
synthesize one.

* include/freetype/config/ftoption.h: Document it.
* devel/ftoption.h: Ditto.
2017-06-21 22:52:37 -04:00
Tony Theodore c8829e4bc1 Fix pkg-config in freetype-config for cross-compiling (#51274).
* builds/unix/unix-def.in (PKG_CONFIG): New variable.
(freetype-config): Use it in sed expression.

* builds/unix/freetype-config.in: s/pkg-config/%PKG_CONFIG%/.
2017-06-20 12:24:05 +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
Alexei Podtelezhnikov 7b7278334c [base, smooth] LCD filtering cleanups.
* src/base/ftlcdlil.c (ft_lcd_filter_fir, _ft_lcd_filter_legacy):
Clean up, start filtering from the bottom-left origin.

* src/smooth/ftsmooth.c (ft_smooth_render_generic): Updated.
2017-06-17 23:28:14 -04:00
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 dbeb7bce7f [bdf, cff] Integer overflows.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2244
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2261

* src/bdf/bdfdrivr.c (BDF_Face_Init): Replace calls to FT_ABS with
direct code to avoid value negation.

* src/cff/cf2blues.c (cf2_blues_capture): Use SUB_INT32 and
ADD_INT32.
2017-06-15 19:39:50 +02:00
Werner Lemberg 79e3789f81 * src/winfonts/winfnt.c (FNT_Face_Init): Don't set active encoding.
FreeType only sets a default active encoding for Unicode.
2017-06-14 07:51:04 +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 3ed3a96181 [cff] Integer overflows.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2200
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2210

* src/cff/cf2hints.c (cf2_hintmap_insertHint): Use SUB_INT32 and
ADD_INT32.

* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdVMOVETO>: Use
ADD_INT32.
2017-06-11 13:50:37 +02:00
Werner Lemberg 5f2a72cbc7 [truetype] Fix TT_Set_Var_Design.
Reported by Nikolaus Waxweiler <madigens@gmail.com>.

* src/truetype/ttgxvar.c (TT_Set_Var_Design): Correctly handle the
case where we have less input coordinates than axes.
2017-06-10 11:29:24 +02:00
Werner Lemberg 2c4fba9c91 * src/base/ftcalc.c (FT_DivFix): Fix embarrassing typo.
Bug introduced 2017-05-28.
2017-06-10 11:03:41 +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 96d26926d1 Provide more macros for flooring, ceiling, and rounding.
These versions don't produce run-time errors due to integer
overflow.

* include/freetype/internal/ftobjs.h: Include FT_INTERNAL_CALC_H.
(FT_PAD_ROUND_LONG, FT_PAD_CEIL_LONG, FT_PIX_ROUND_LONG,
FT_PIX_CEIL_LONG): New macros.
(FT_PAD_ROUND_INT32, FT_PAD_CEIL_INT32, FT_PIX_ROUND_INT32,
FT_PIX_CEIL_INT32): New macros.
2017-06-09 20:34:28 +02:00
Werner Lemberg faf34d29e2 Remove unused macros.
* include/freetype/internal/ftcalc.h (ADD_INT, SUB_INT, MUL_INT,
NEG_INT): Deleted.
2017-06-09 20:31:24 +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 24848a3d58 [cff] Integer overflow.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2109
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2110
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2122

* src/cff/cf2blues.c (cf2_blues_init): Use OVERFLOW_SUB_INT32.

* src/cff/cf2hints.c (cf2_hintmap_map): Synchronize if-else
branches.
2017-06-06 12:05:04 +02:00
Werner Lemberg 8667042997 [cff] Integer overflow.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2089

* src/cff/cffload.c (cff_blend_doBlend): User OVERFLOW_ADD_INT32.
2017-06-05 06:20:53 +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 c9a9cf5915 * builds/unix/freetype-config.in: Fix pkg-config test (#51162).
Patch directly taken from bug report.
2017-06-03 09:41:50 +02:00
Werner Lemberg 2c2e6403b7 [bdf] Synchronize sanity checks with pcf driver.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2054
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2058

* src/bdf/bdfdrivr.c (BDF_Face_Init): Check font ascent and descent.
Check AVERAGE_WIDTH, POINT_SIZE, PIXEL_SIZE, RESOLUTION_X, and
RESOLUTION_Y properties.
2017-06-03 07:38:11 +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 c5a225413f ftcalc.h: Avoid left-shift of negative numbers.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2055

* include/freetype/internal/ftcalc.h (INT_TO_F26DOT6,
INT_TO_F2DOT14, INT_TO_FIXED, F2DOT14_TO_FIXED): Use multiplication.
2017-06-03 06:13:10 +02:00
Werner Lemberg 0716c6ab7a [cff] Even more integer overflows.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2046

* src/cff/cf2intrp.c (cf2_doStems, cf2_interpT2CharString): Use
OVERFLOW_ADD_INT32.
2017-06-02 19:24:03 +02:00
Werner Lemberg 7a4276fb90 [cff] More integer overflows.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2032

* src/cff/cf2blues.c (cf2_blues_init): Use OVERFLOW_SUB_INT32.
2017-06-02 09:21:37 +02:00
Werner Lemberg 03b0cc2ea9 [bdf] Don't left-shift negative numbers.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2031

* src/bdf/bdfdrivr.c (BDF_Face_Init): Use multiplication.
2017-06-02 09:16:52 +02:00
Werner Lemberg 47a03e9b23 [bdf] Fix integer scanning routines.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2029

* src/bdf/bdflib.c (_bdf_atoul, _bdf_atol, _bdf_atous, _bdf_atos):
Stop scanning if result would overflow.
2017-06-02 09:06:36 +02:00
Werner Lemberg 3802ca8b64 [cff] Fix integer overflows.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2027
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2028

* src/cff/cf2hints.c (cf2_hintmap_insertHint), src/cff/cf2intrp.c
(cf2_doFlex): Use OVERFLOW_ADD_INT32 and OVERFLOW_SUB_INT32.
2017-06-02 08:44:20 +02:00
Werner Lemberg cd02d359a6 [smooth] Some 32bit integer overflow run-time errors.
* src/smooth/ftgrays.c [STANDALONE] (OVERFLOW_ADD_LONG,
OVERFLOW_SUB_LONG, OVERFLOW_MUL_LONG, NEG_LONG): New macros.
[!STANDALONE]: Include FT_INTERNAL_CALC_H.
(gray_render_cubic): Use those macros where appropriate.
2017-06-01 17:05:39 +02:00
Werner Lemberg 0ad3262366 * src/base/ftglyph.c (FT_Get_Glyph): Check `slot->advance'. 2017-06-01 17:00:37 +02:00
Werner Lemberg 4a1f1a6d2a [psaux] 32bit integer overflow tun-time errors (#46149).
* src/psaux/t1decode.c (t1_decoder_parse_charstrings): Use
OVERFLOW_ADD_LONG and OVERFLOW_SUB_LONG where appropriate.
2017-06-01 13:15:54 +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
Werner Lemberg e66d7300fe [cff] 32bit integer overflow run-time errors 2/2 (#46149).
This commit handles the new engine.

* include/freetype/internal/ftcalc.h (OVERFLOW_ADD_INT32,
OVERFLOW_SUB_INT32, OVERFLOW_MUL_INT32, NEG_INT, NEG_LONG,
NEG_INT32): New macros.

* src/cff/cf2ft.c (cf2_getScaleAndHintFlag): Use OVERFLOW_ADD_INT32.

* src/cff/cf2hints.c (cf2_getWindingMomentum, cf2_hint_init,
cf2_hintmap_map, cf2_glyphpath_hintPoint,
cf2_glyphpath_computeIntersection, cf2_glyphpath_computeOffset,
cf2_glyphpath_lineTo, cf2_glyphpath_curveTo): Use
OVERFLOW_ADD_INT32, OVERFLOW_SUB_INT32, OVERFLOW_MUL_INT32, and
NEG_INT32 where appropriate.

* src/cff/cf2intrp.c (cf2_doFlex, cf2_doBlend,
cf2_interpT2CharString): Ditto.
Also add some other code where needed to avoid overflow.
2017-05-31 16:16:50 +02:00
Werner Lemberg 9b710cd56e [cff] 32bit integer overflow run-time errors 1/2 (#46149).
This commit handles the old engine.

* src/cff/cffgload.c: Include FT_INTERNAL_CALC_H.
(cff_decoder_parse_charstrings): Use OVERFLOW_ADD_LONG and
OVERFLOW_SUB_LONG where needed.

* src/cff/cffparse.c: Include FT_INTERNAL_CALC_H.
(power_ten_limits): New static array.
(do_fixed): Use it to prevent multiplication overflow.
(cff_parser_run): Use OVERFLOW_ADD_LONG.
2017-05-30 22:35:41 +02:00
Werner Lemberg 0e7b9f864f [psaux] Correctly handle sequences of multiple number signs.
* src/psaux/psconv.c (PS_Conv_Strtol, PS_Conv_ToFixed): Return zero
if we encounter more than a single sign.
2017-05-30 22:22:19 +02:00
Werner Lemberg f01463297f [pcf] 32bit integer overflow run-time errors (#46149).
* src/pcf/pcfread.c (pcf_get_accel): Add sanity checks for
`fontAscent' and `fontDescent'.
(pcf_load_font): Add sanity checks for global height.
Add sanity checks for AVERAGE_WIDTH, POINT_SIZE, PIXEL_SIZE,
RESOLUTION_X, and RESOLUTION_Y properties.
2017-05-29 21:04:27 +02:00
Werner Lemberg fbe2fe4c75 Handle some integer overflow run-time errors (#46149, #48979).
This commit (mainly for 32bit CPUs) is the first of a series of
similar commits to handle known integer overflows.  Basically, all
of them are harmless, since they affect rendering of glyphs only,
not posing security threats.  It is expected that fuzzying will show
up more overflows, to be fixed in due course.

The idea is to mark places where overflows can occur, using macros
that simply cast to unsigned integers, because overflow arithmetic
is well defined in this case.  Doing so suppresses run-time errors
of sanitizers without adding computational overhead.

* include/freetype/internal/ftcalc.h (OVERFLOW_ADD_INT,
OVERFLOW_SUB_INT, OVERFLOW_MUL_INT, OVERFLOW_ADD_LONG,
OVERFLOW_SUB_LONG, OVERFLOW_MUL_LONG): New macros.

* src/base/ftcalc.c (FT_RoundFix, FT_CeilFix, FT_Matrix_Multiply,
FT_Matrix_Multiply_Scaled, FT_Vector_Transform_Scaled,
ft_corner_orientation): Use new macros.

* src/base/ftoutln.c (FT_Outline_Get_Orientation): Use new macros.
2017-05-29 13:29:28 +02:00
Werner Lemberg 9d04fa7015 * include/freetype/internal/ftcalc.h (FLOAT_TO_FIXED): Remove.
This macro is not used.
2017-05-28 07:57:24 +02:00
Werner Lemberg 2e4188d833 [cff] s/cf2_floatToFixed/cf2_doubleToFixed/.
The new name better describes what the macro actually does;
additionally, we don't need a trailing `f' for literals (there was
only a single such instance in the code, but this caused a clang
warning because the macro itself uses `double' literals).

* src/cff/cf2blues.c, src/cff/cf2blues.h, src/cff/cf2fixed.h,
src/cff/cf2font.c, src/cff/cf2hints.c: Updated.
2017-05-28 07:46:22 +02:00
Werner Lemberg 9357219082 Fix negation of INT_MIN and LONG_MIN (#46149).
* src/base/ftcalc.c (FT_MOVE_SIGN): Add argument to pass unsigned
value, to be used as the result.
(FT_MulDiv, FT_MulDiv_No_Round, FT_DivFix, FT_MulFix,
FT_Vector_NormLen): Updated.
2017-05-28 07:20:09 +02:00
Werner Lemberg a9331c0f4d [truetype] Fix handling of design coordinates (#51127).
* src/truetype/ttgxvar.c (tt_set_mm_blend): Compute all design
coordinates if we have to create the `blends->coord' array.
(TT_Get_MM_Blend, TT_Get_Var_Design): Select default instance
coordinates if no instance is selected yet.
2017-05-27 15:50:25 +02:00
Werner Lemberg 082f2faf50 [bdf, pcf] Support ISO646.1991-IRV character encoding (aka ASCII).
Problem reported by Marek Kašík <mkasik@redhat.com>, cf.

  https://bugzilla.redhat.com/show_bug.cgi?id=1451795

* src/bdf/bdfdrivr.c (BDF_Face_Init), src/pcf/pcfdrivr.c
(PCF_Face_Init): Implement it.
2017-05-24 07:40:46 +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
Alexei Podtelezhnikov ab2599ea3f [smooth] Implement minimal dynamic padding for LCD filtering.
Extra bitmap padding for LCD filtering depends on the filter.  The
default 5-tap filter needs 2 extra subpixels.  The light 3-tap filter
needs only 1 extra subpixel.  This space could be already available
due to rounding.  In order to optimize the padding, we now expand
CBox for the given filter weights before rounding.

This change breakes current Skia (and Firefox).

* include/freetype/internal/ftobjs.h (FT_LibraryRec)
[FT_CONFIG_OPTION_SUBPIXEL_RENDERING]: Remove `lcd_extra' field.

* src/base/ftlcdfil.c (FT_Library_SetLcdFilterWeights,
FT_Library_SetLcdFilter): Remove `lcd_extra' initializations.

* src/smooth/ftsmooth.c (ft_smooth_render_generic): Implement dymanic
LCD padding.
2017-05-20 00:35:21 -04:00
Werner Lemberg 5efda13f60 [sfnt] Return proper scaling values for SBIX bitmaps.
Problem reported by Hin-Tak Leung <htl10@users.sourceforge.net>.

* src/sfnt/ttsbit.c (tt_face_load_strike_metrics): Implement it.
2017-05-15 21:26:01 +02:00
Werner Lemberg 6e5445a232 [truetype] Fix error handling for embedded bitmaps.
Problem reported by Hin-Tak Leung <htl10@users.sourceforge.net>.

* src/truetype/ttgload.c (TT_Load_Glyph)
[TT_CONFIG_OPTION_EMBEDDED_BITMAPS]: Handle error if font is not
scalable.
2017-05-15 21:24:04 +02:00
Alexei Podtelezhnikov a7f276a281 [autofit] Make autohint warping NORMAL option.
This moves warping option from LIGHT to NORMAL mode.  This makes LIGHT
truly void of hinting in x-direction, with left side bearing never
changed and right side bearing only altered by advance rounding.
Therefore, LIGHT is now ready to return fractional advance.  As a
NORMAL option, warping substitutes normal hinting.

* src/autofit/afcjk.c (af_cjk_hints_apply): Updated.
* src/autofit/aflatin.c (af_latin_hints_apply): Updated.
* src/autofit/aflatin2.c (af_latin2_hints_apply): Updated.

* src/autofit/afloader.c (af_loader_load_glyph): Handle warping
phantom points as normal.
2017-05-15 00:25:37 -04:00
Werner Lemberg e99b26aada Remove remnants of raster pool.
* include/freetype/internal/ftobjs.h (FT_LibraryRec): Remove
`raster_pool' and `raster_pool_size' fields.

* src/base/ftobjs.c (FT_New_Library), src/raster/ftrend1.c
(ft_raster1_init), src/smooth/ftsmooth.c (ft_smooth_init): Updated.
2017-05-14 21:57:27 +02:00
Werner Lemberg a12a34451a * Version 2.8 released.
=======================

Tag sources with `VER-2-8'.

* docs/VERSION.TXT: Add entry for version 2.8.
* docs/CHANGES: Updated.

* 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/2.7.1/2.8/, s/271/28/.

* include/freetype/freetype.h (FREETYPE_MINOR): Set to 8.
(FREETYPE_PATCH): Set to 0.

* builds/unix/configure.raw (version_info): Set to 20:0:14.
* CMakeLists.txt (VERSION_MINOR): Set to 8.
(VERSION_PATCH): Set to 0.
2017-05-13 06:29:04 +02:00
Hin-Tak Leung 603121c050 Fix `FT_UINT_TO_POINTER' macro for Windows.
* builds/unix/ftconfig.in, builds/vms/ftconfig.h,
include/freetype/config/ftconfig.h (FT_UINT_TO_POINTER) [_WIN64]:
Fix definition.
2017-05-12 07:52:36 +02:00
Sascha Brawer ac0eed8646 [autofit] Add support for Chakma script.
* src/autofit/afblue.dat: Add blue zone data for Chakma.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Chakma standard character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Chakma data.
2017-05-11 00:06:37 +02:00
Sascha Brawer d19859f16f [autofit] Add support for Kayah Li script.
* src/autofit/afblue.dat: Add blue zone data for Kayah Li.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Kayah Li standard character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Kayah Li data.
2017-05-10 23:38:05 +02:00
Sascha Brawer 87218c9950 [autofit] Add support for Bamum script.
* src/autofit/afblue.dat: Add blue zone data for Bamum.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Bamum standard character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Bamum data.
2017-05-10 12:39:33 +02:00
Sascha Brawer 4aa1aec1a3 [autofit] Add support for Saurashtra script.
* src/autofit/afblue.dat: Add blue zone data for Saurashtra.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Saurashtra standard character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Saurashtra
data.
2017-05-10 09:36:13 +02:00
Werner Lemberg 53f3824452 [autofit] Add support for Buhid script.
* src/autofit/afblue.dat: Add blue zone data for Buhid.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Buhid standard character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Buhid data.
2017-05-10 09:13:20 +02:00
Sascha Brawer 44c6117ea7 [autofit] Add support for Shavian script.
* src/autofit/afblue.dat: Add blue zone data for Shavian.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Shavian standard character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Shavian data.
2017-05-08 20:31:52 +02:00
Sascha Brawer a9e5e6e5b6 [autofit] Add support for Vai script.
* src/autofit/afblue.dat: Add blue zone data for Vai.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Vai standard character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Vai data.
2017-05-08 19:57:16 +02:00
Sascha Brawer acc6b6dff8 [autofit] Add support for Osmanya script.
* src/autofit/afblue.dat: Add blue zone data for Osmanya.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Osmanya standard character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Osmanya data.
2017-05-08 15:08:46 +02:00
Sascha Brawer f27ebb1ec4 [autofit] Add support for Coptic script.
* src/autofit/afblue.dat: Add blue zone data for Coptic.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Coptic standard character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Coptic data.
2017-05-08 10:22:26 +02:00
Sascha Brawer db0fe73331 [autofit] Add support for Carian script.
* src/autofit/afblue.dat: Add blue zone data for Carian.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Carian standard character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Carian data.
2017-05-08 10:00:16 +02:00
Werner Lemberg ec4cb04b31 [truetype] Add tricky font `DFGirl-W6-WIN-BF' (from Dynalab).
Reported by Roy Tam <roytam@gmail.com>.

* src/truetype/ttobjs.c (tt_check_trickyness_family): Implement it.
2017-05-07 13:06:36 +02:00
Roy Tam 0ed9fef032 [truetype] More tricky fonts (mainly from Dynalab).
* src/truetype/ttobjs.c (tt_check_trickyness_family,
tt_check_trickyness_sfnt_ids): Add them.
2017-05-07 08:32:58 +02:00
Werner Lemberg f784a5653a [truetype] Add tricky font `DLCHayMedium' (from Dynalab).
Reported by Roy Tam <roytam@gmail.com>.

* src/truetype/ttobjs.c (tt_check_trickyness_family): Implement it.
2017-05-07 00:45:05 +02:00
Werner Lemberg 8cd31eb7b0 */*: s/backwards compatibility/backward compatibility/. 2017-05-03 23:54:29 +02:00
Sascha Brawer c9e7063a01 [autofit] Add support for Unified Canadian Syllabics script.
* src/autofit/afblue.dat: Add blue zone data for Unified Canadian
Syllabics.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Unified Canadian Syllabics standard
character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Unified
Canadian Syllabics data.
2017-05-03 23:21:13 +02:00
Sascha Brawer 0483fb3861 [autofit] Add blue-zone support for Sundanese script.
This essentially moves the Sundanese script from the `Indic' hinter
to the `Latin' hinter.

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

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

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

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

* src/autofit/afstyles.h: Update Sundanese data; in particular, use
AF_WRITING_SYSTEM_LATIN.
2017-05-03 20:16:24 +02:00
Sascha Brawer 14ae17a25f [autofit] Add support for Avestan script.
* src/autofit/afblue.dat: Add blue zone data for Avestan.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Avestan standard character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Avestan data.
2017-05-03 18:35:13 +02:00
Behdad Esfahbod 60bf264ee2 [truetype] Make `IUP' gvar deltas do the same as Apple (#50832).
When points are not touched by gvar interpolation deltas, FreeType
gave a slightly different result than Apple's CoreText.

The OpenType working group will update the specification to document
the following behaviour: If the two points with deltas to the `left'
and `right' of the untouched point have the same coordinate, then
the inferred delta for the untouched point should be zero.

* src/truetype/ttgxvar.c (tt_delta_interpolate): Implement new
behaviour.
2017-05-02 14:38:54 +02:00
Werner Lemberg ba40054c2d [autofit] Remove `slight' auto-hint mode again.
A poll on freetype-devel favoured changes directly applied to
`light'.

* include/freetype/freetype.h (FT_LOAD_TARGET_SLIGHT,
FT_RENDER_MODE_SLIGHT): Removed.

* src/autofit/afcjk.c (af_cjk_hints_init), src/autofit/aflatin.c
(af_latin_hints_init), src/autofit/aflatin2.c
(af_latin2_hints_init): Revert change from 2017-04-22.

* src/autofit/afloader.c (af_loader_load_glyph) Remove references to
FT_RENDER_MODE_SLIGHT.
[AF_CONFIG_OPTION_TT_SIZE_METRICS]: Enable TrueType-like metrics
unconditionally.

* src/base/ftadvanc.c (LOAD_ADVANCE_FAST_CHECK): Revert change from
2017-04-22.

* src/base/ftobjs.c (FT_Load_Glyph): Revert change from 2017-04-22.

* src/pshinter/pshalgo.c (ps_hints_apply): Revert change from
2017-04-22.

* src/smooth/ftsmooth.c (ft_smooth_render): Revert change from
2017-04-22.

* docs/CHANGES: Updated.
2017-05-02 12:32:19 +02:00
Werner Lemberg 7abf0cb758 [autofit] Fix metrics computation.
Problem reported by Markus Trippelsdorf <markus@trippelsdorf.de> and
Nikolaus Waxweiler <madigens@gmail.com>.

* src/base/ftobjs.c (FT_Request_Size): Trigger recomputation of
auto-hinter metrics.  Without this change, multiple size changing
calls for a single face fail.
2017-04-30 17:25:11 +02:00
Werner Lemberg 785833d96e * src/truetype/ttdriver.c (tt_size_request): Properly check `error'.
Reported by Earnestly <zibeon@googlemail.com> in

  http://lists.nongnu.org/archive/html/freetype/2017-04/msg00031.html
2017-04-29 06:47:14 +02:00
Werner Lemberg 0a5315d141 Introduce AF_CONFIG_OPTION_TT_SIZE_METRICS configuration option.
* include/freetype/config/ftoption.h
(AF_CONFIG_OPTION_TT_SIZE_METRICS): New option, commented out by
default.

* src/autofit/afloader.c (af_loader_load_glyph): Use
AF_CONFIG_OPTION_TT_SIZE_METRICS to guard the corresponding code.
2017-04-27 13:02:24 +02:00
Werner Lemberg ab10ffcdd5 * include/freetype/freetype.h (FT_Render_Mode): Fix order.
This retains backwards compatibility.

Noted by Alexei.
2017-04-26 13:41:40 +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 5aa6716a5e Add new `slight' auto-hinting mode.
This mode uses fractional advance widths and doesn't scale glyphs
horizontally, only applying vertical scaling and hinting.

At the same time, the behaviour of the `light' auto-hinter gets
restored for backwards compatibility: Both vertical and horizontal
scaling is again based on rounded metrics values (this was changed
in a commit from 2017-03-30 as a side effect).  To be more precise,
the behaviour is restored for TrueType fonts only; for other font
formats like Type 1, this is a new feature of the `light' hinting
mode.

* include/freetype/freetype.h (FT_LOAD_TARGET_SLIGHT): New macro.
(FT_RENDER_MODE_SLIGHT): New render mode.

* include/freetype/internal/ftobjs.h (FT_Size_InternalRec): Add
`autohint_mode' and `autohint_metrics' fields.

* src/autofit/afcjk.c (af_cjk_hints_init), src/autofit/aflatin.c
(af_latin_hints_init), src/autofit/aflatin2 (af_latin2_hints_init):
Updated.

* src/autofit/afloader.c (af_loader_embolden_glyph_in_slot): Use
`autohint_metrics'.
(af_loader_load_glyph): s/internal/slot_internal/.
Initialize `autohint_metrics' and `autohint_mode' depending on
current auto-hint mode.
Use `autohint_metrics'.
Updated.

* src/base/ftadvanc.c (LOAD_ADVANCE_FAST_CHECK): Updated.

* src/base/ftobjs.c (FT_Load_Glyph): Updated.
(FT_New_Size): Allocate `internal' object.

* src/pshinter/pshalgo.c (ps_hints_apply): Updated.

* src/smooth/ftsmooth.c (ft_smooth_render): Updated.
2017-04-26 11:39:53 +02:00
Werner Lemberg 5412d8869b Introduce `FT_Size_InternalRec' structure.
We are going to extend this later on.

* include/freetype/internal/ftobjs.h (FT_Size_InternalRec): New
structure with a single field `module_data'.

* src/base/ftobjs.c (FT_New_Size): Allocate `internal' field of
`FT_Size' structure.

* src/cff/cffgload.c (cff_builder_init, cff_decoder_prepare): Use
`size->internal->module_data' instead of `size->internal'.

* src/cff/cffobjs.c (cff_size_done): Deallocate `module_data'.
(cff_size_init, cff_size_select, cff_size_request): Use
`size->internal->module_data' instead of `size->internal'.

* src/cif/cidobjs.c (cid_size_done, cid_size_init,
cid_size_request): Use `size->internal->module_data' instead of
`size->internal'.

* src/psaux/psobjs.c (t1_builder_ini): Use
`size->internal->module_data' instead of `size->internal'.

* src/type1/t1objs.c (T1_Size_Done, T1_Size_Init, T1_Size_Request):
Use `size->internal->module_data' instead of `size->internal'.
2017-04-22 12:48:50 +02:00
Alexei Podtelezhnikov eb5e0fb7ee * src/smooth/ftsmooth.h: Remove unused guards and declaration. 2017-04-21 22:53:39 -04:00
Alexei Podtelezhnikov 71d289da3b Typos. 2017-04-19 23:50:29 -04:00
Hin-Tak Leung 5efba4c4dc Fix tracing messages.
* src/base/ftobjs.c (FT_Face_GetCharVariantIndex,
FT_Face_GetCharVariantIsDefault, FT_Face_GetVariantsOfChar): Print
correct function name.
2017-04-16 07:23:24 +02:00
Werner Lemberg 90ccab3d78 [autofit] Add support for Old Turkic script.
* src/autofit/afblue.dat: Add blue zone data for Old Turkic.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Old Turkic standard characters.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Old Turkic data.
2017-04-08 17:58:57 +02:00
Sascha Brawer df2a7cd198 [autofit] Add support for Gothic script.
* src/autofit/afblue.dat: Add blue zone data for Gothic.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Gothic standard characters.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Gothic data.
2017-04-08 16:11:44 +02:00
Sascha Brawer 5bf4b1aaf7 [autofit] Add support for Cypriot script.
* src/autofit/afblue.dat: Add blue zone data for Cypriot.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Cypriot standard characters.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Cypriot data.
2017-04-08 11:38:52 +02:00
Sascha Brawer d79fc79422 [autofit] Add support for Deseret script.
* src/autofit/afblue.dat: Add blue zone data for Deseret.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Deseret standard characters.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Deseret data.
2017-04-08 07:06:24 +02:00
Werner Lemberg 32efd8c008 [autofit] Fix invalid character range description (#50745).
Also reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1034

* src/autofit/afranges.c (af_glag_nonbase_uniranges): Fix typo in
recent commit.
2017-04-07 17:22:59 +02:00
Werner Lemberg 04e00b8a3d [ftfuzzer] Fix clang warnings.
* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Add
casts.
2017-04-07 17:13:38 +02:00
Sascha Brawer 2c256e6dac [autofit] Add support for Lisu script.
* src/autofit/afblue.dat: Add blue zone data for Lisu.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Lisu standard characters.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Lisu data.
2017-04-06 17:05:47 +02:00
Sascha Brawer 2b9114765a [autofit] Add support for Osage script.
* src/autofit/afblue.dat: Add blue zone data for Osage.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Osage standard characters.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Osage data.
2017-04-06 16:49:39 +02:00
Sascha Brawer 628e2850b2 [autofit] Add support for Glagolitic script.
* src/autofit/afblue.dat: Add blue zone data for Glagolitic.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Glagolitic standard characters.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Glagolitic data.
2017-04-06 12:47:27 +02:00
Sascha Brawer 6967eb93f8 [autofit] Add support for Tai Viet script.
* src/autofit/afblue.dat: Add blue zone data for Tai Viet.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Tai Viet standard characters.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Tai Viet data.
2017-04-06 11:35:07 +02:00
Sascha Brawer 837f112566 [autofit] Add support for Tifinagh script.
* src/autofit/afblue.dat: Add blue zone data for Tifinagh.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Tifinagh standard characters.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Tifinagh data.
2017-04-06 08:44:08 +02:00
Sascha Brawer 134246b72b [autofit] Add support for N'Ko script.
* src/autofit/afblue.dat: Add blue zone data for N'Ko.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add N'Ko standard characters.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add N'Ko data.
2017-04-06 07:06:32 +02:00
Sascha Brawer ba9cee479a [autofit] Add support for Adlam script.
* src/autofit/afblue.dat: Add blue zone data for Adlam.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Adlam standard characters.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Adlam data.
2017-04-06 05:50:44 +02:00
Sascha Brawer 8210ee4b69 [autofit] Add support for Ol Chiki script.
* src/autofit/afblue.dat: Add blue zone data for Ol Chiki.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Ol Chiki standard character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Ol Chiki data.
2017-04-06 05:39:51 +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
Alexei Podtelezhnikov e7b013044e [autofit] Disable metrics adjustment for `FT_LOAD_TARGET_LCD'.
* src/autofit/aflatin.c (af_latin_hints_init): Updated.
* src/autofit/aflatin2.c (af_latin2_hints_init): Ditto.
2017-04-02 22:01:47 -04:00
Werner Lemberg bb6c037bae * src/truetype/ttgload.c: Include FT_CONFIG_CONFIG_H.
Otherwise FT_UINT_TO_POINTER might not be defined.

Problem reported by Alexei.
2017-04-01 09:49:11 +02:00
Alexei Podtelezhnikov 54b58097ee [autofit] Disable stem adjustment for `FT_LOAD_TARGET_LCD'.
* include/freetype/freetype.h (FT_LOAD_TARGET_LCD): Document it.
* src/autofit/afcjk.c (af_cjk_hints_init): Updated.
* src/autofit/aflatin.c (af_latin_hints_init): Ditto.
* src/autofit/aflatin2.c (af_latin2_hints_init): Ditto.
2017-03-31 22:41:53 -04:00
Werner Lemberg 5a3490e054 * src/cff/cffload.c (cff_font_load): Improve fix from 2017-01-04.
Allow CFFs containing a single font to have an empty font name.

Problem reported by 張俊芝 <418092625@qq.com> in

  http://lists.nongnu.org/archive/html/freetype-devel/2017-03/msg00074.html
2017-03-31 09:35:58 +02:00
Werner Lemberg c8c6763988 * src/cff/cffparse.h (CFF2_DEFAULT_STACK): Set to 513 also.
Requested by Dave Arnold.
2017-03-30 21:07:17 +02:00
Werner Lemberg da38be831d [truetype] Fix HVAR and VVAR handling (#50678).
* src/truetype/ttgxvar.c (tt_hvadvance_adjust): Handle
glyph indices larger than `mapCount' as described in the
specification.
2017-03-30 13:24:03 +02:00
Werner Lemberg bcc74f4daf [truetype] Allow linear scaling for unhinted rendering (#50470).
* src/truetype/ttdriver.c (tt_size_request): Revert change from
2011-07-16; the intended metrics fix seems now to be implemented in
a different way, making the patch unnecessary.  Note that this
change was usually patched out by all major GNU/Linux distributions
due to heavy side effects.

* src/truetype/ttgload.c (compute_glyph_metrics, TT_Load_Glyph):
Refer to the metrics of the `TT_Size' object.
2017-03-30 13:14:43 +02:00
Werner Lemberg 1ede3674cb [truetype] Fix thinko related to PS name of default named instance.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): `strid' and `psid' are
name ID values, not indices into the array of name entries.
2017-03-30 00:26:31 +02:00
Werner Lemberg 208e712de0 [cid, truetype] Don't use `index' as a variable name.
At least on FreeBSD there is a global declaration of `index' in file
`/usr/include/strings.h'.

* src/cff/cf2intrp.c, src/truetype/ttgload.c: s/index/idx/ where
appropriate.
2017-03-27 20:56:23 +02:00
Wojciech Mamrak 565f5a7d19 [sfnt] Minor improvement for handling kern tables.
* src/sfnt/ttkern.c (tt_face_load_kern): Don't check for
cross-stream kerning tables since we reject format 2 tables later
on anyways.
Modify code for limit test...
(tt_face_get_kerning): ... to avoid a limit test here.
2017-03-27 09:19:14 +02:00
Werner Lemberg c22a9aa245 [pcf] Fix compiler warnings.
Reported by Alexander Hedges <ahedges@student.ethz.ch>.

* src/pcf/pcfdrivr.c (pcf_property_set, pcf_property_get): Tag
`property_name' with `FT_UNUSED' where necessary.
2017-03-27 07:57:24 +02:00
Werner Lemberg 3774fc08b5 * src/psaux/psobjs.c (t1_builder_close_contour): Add safety guard.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=941
2017-03-26 08:32:09 +02:00
Werner Lemberg f958c48ee4 [psaux] Better protect `flex' handling.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=935

* src/psaux/t1decode.c (t1_decoder_parse_charstrings)
<callothersubr>: Since there is not a single flex operator but a
series of subroutine calls, malformed fonts can call arbitrary other
operators after the start of a flex, possibly adding points.  For
this reason we have to check the available number of points before
inserting a point.
2017-03-24 09:15:10 +01:00
Werner Lemberg 913f436d12 [sfnt] Fix check for default named instance.
* src/sfnt/sfobjs.c (sfnt_init_face): A `fixed' number needs four
bytes, not two...
2017-03-23 18:37:06 +01:00
Werner Lemberg 67ff7664e4 Make MM fonts work (again).
* src/base/ftmm.c (FT_Set_Var_Design_Coordinates,
FT_Set_MM_Blend_Coordinates, FT_Set_Var_Blend_Coordinates): Ignore
return value of `ft_face_get_mvar_service'; instead, check whether a
service is actually returned.
2017-03-23 12:41:30 +01:00
Werner Lemberg 683e3ad936 [truetype] Some variable renamings.
Too much local variables holding different structures were called
`metrics'.

* src/truetype/ttdriver.c (tt_size_select): s/metrics/size_metrics/.

* src/truetype/ttgload.c (tt_get_metrics_incr_overrids,
compute_glyph_metrics): s/metrics/incr_metrics/.
(load_sbit_image): s/metrics/sbit_metrics/.

* src/truetype/ttobjs.c (tt_size_run_fpgm): s/metrics/size_metrics/.
(tt_size_init_bytecode): s/metrics/tt_metrics/.
(tt_size_reset): s/metrics/size_metrics/.
2017-03-21 19:49:11 +01:00
Werner Lemberg 6342da9a8d [sfnt] Don't add instances to non-variation fonts.
* src/sfnt/sfobjs.c (sfnt_init_face): Fix it.
2017-03-20 05:36:41 +01:00
Werner Lemberg dd64a6227c * src/cff/cffgload.c (cff_builder_init): Add safety guard (#50578). 2017-03-20 05:34:02 +01:00
Werner Lemberg 7aeee3c50f Introduce FT_UINT_TO_POINTER macro (#50560).
We have to make a separate case for Windows 64's LLP64 data model.

* builds/unix/ftconfig.in, builds/vms/ftconfig.h,
include/freetype/config/ftconfig.h (FT_UINT_TO_POINTER): New macro.

* src/truetype/ttgload.c (load_truetype_glyph): Use it.
2017-03-18 17:30:42 +01:00
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 ab840e6a4c [ftfuzzer] Minor improvement.
* src/tools/ftfuzzer/ftfuzzer.cc: Don't set intermediate axis if
bitmap strikes are active.
2017-03-18 08:50:42 +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 d5bfa053f5 Fixes for conditional compilation.
* src/autofit/afcjk.c, src/autofit/afindic.c: Include `afcjk.h'
earlier.

* src/sfnt/sfobjs.c (sfnt_init_face): Put `memory' variable into
TT_CONFIG_OPTION_GX_VAR_SUPPORT block.
(sfnt_done_face): Protect some code with
TT_CONFIG_OPTION_GX_VAR_SUPPORT.

* src/sfnt/ttsbit.c (tt_face_load_sbix_image): Remove compiler
warning.

* src/truetype/ttgload.c (TT_Load_Simple_Glyph): Put `tmp' variable
into TT_USE_BYTECODE_INTERPRETER block.

(tt_loader_init): Put `error' variable into
TT_USE_BYTECODE_INTERPRETER block.
2017-03-17 21:47:54 +01:00
Werner Lemberg e5595784f4 Fix preprocessor warning.
* devel/ftoption.h, include/freetype/config/ftoption.h: Test whether
TT_CONFIG_OPTION_SUBPIXEL_HINTING is defined before checking its
value.
2017-03-17 21:34:08 +01:00
Werner Lemberg bffb7fe90b `make multi' fixes; compiler warnings.
* src/base/ftsnames.c: Include FT_INTERNAL_DEBUG_H.

* src/cff/cffobjs.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include
FT_MULTIPLE_MASTERS_H and FT_SERVICE_MULTIPLE_MASTERS_H.

* src/sfnt/sfdriver.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include
FT_MULTIPLE_MASTERS_H and FT_SERVICE_MULTIPLE_MASTERS_H.
(get_win_string, get_apple_string): Initialize `result'.
2017-03-17 07:52:30 +01:00
Dave Arnold fdbef538f4 [cff] Fix potential bugs in default NDV for CFF2.
* src/cff/cffload.c (cff_blend_build_vector): Explicitly build blend
vector when `lenNDV' is zero; don't rely on zero-init.
Save `lenNDV' as part of cache key even when `lenNDV' is zero.
2017-03-17 07:28:11 +01:00
Dave Arnold 0bf95b585e [cff] Fix CFF2 stack allocation.
* src/cff/cffparse.c (cff_parser_init) add 1 for operator.
2017-03-17 07:22:55 +01:00
Werner Lemberg d9ff6f20ad * src/truetype/ttgxvar.c (tt_done_blend): Free `vvar_table'.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=883
2017-03-16 20:20:51 +01:00
Werner Lemberg 981c23b75e Remove clang compiler warnings (#50548).
* include/freetype/internal/tttypes.h (TT_FaceRec): Make
`var_postscript_prefix_len' unsigned.

* src/autofit/afwarp.c (af_warper_compute_line_best): Remove
redundant assignment.

* src/cff/cffload.c (cff_subfont_load): Add casts.

* src/cff/cffparse.c (cff_parse_blend): Remove redundant assignment.

* src/sfnt/sfdriver.c (fmix32, murmur_hash_3_128): Add `static'
keyword.
Add casts.
(fixed2float): Add cast.
(sfnt_get_var_ps_name): Make `p' always initialized.
Add casts.

* src/truetype/ttgxvar.c (TT_Get_MM_Var): Add casts.
2017-03-15 11:35:26 +01:00
Werner Lemberg 3f92048ab1 [ftfuzzer] Limit number of tested faces and instances.
This is inspired by the discussion in and analysis of

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=859

* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Use only
up to 20 face indices.
Use only up to 20 instance indices.
2017-03-15 09:18:22 +01:00
Werner Lemberg f87269c35c * src/tools/ftfuzzer/ftfuzzer.cc: Improve readability; formatting. 2017-03-15 08:03:16 +01:00
Werner Lemberg 9357ef80ff Typo: s/stroke/strike/. 2017-03-15 07:56:22 +01:00
Werner Lemberg 34010f7c47 [sfnt] Implement PS names for font instances [3/3].
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

* include/freetype/internal/tttypes.h (TT_FaceRec): New fields
`var_postscript_prefix' and `var_postscript_prefix_len'.

* src/sfnt/sfdriver.c: Include FT_TRUETYPE_IDS_H.
(sfnt_is_alphanumeric): New wrapperfunction for `ft_isalnum'.
(get_win_string, get_apple_string): Remove `const' from return
value.
(MAX_VALUE_DESCRIPTOR_LEN, MAX_PS_NAME_LEN): New macros.
(hexdigits): New array.
(sfnt_get_var_ps_name): New function, implementing Adobe TechNote
5902 to construct a PS name for a variation font instance.
(sfnt_get_ps_name): Call `sfnt_get_var_ps_name' for font instances.

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

* src/truetype/ttgxvar.c (tt_set_mm_blend): Reset
`face->postscript_name' to trigger recalculation for new instance
parameters.
2017-03-14 21:50:22 +01:00
Werner Lemberg 4fd9cc73e6 [sfnt] Implement PS names for font instances [2/3].
* src/sfnt/sfdriver.c (fix2float) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]:
New function to find the shortest representation of a 16.16
fractional number.
2017-03-14 19:40:50 +01:00
Werner Lemberg 4a32dce92a [sfnt] Implement PS names for font instances [1/3].
Add 128bit MurmurHash 3 function.

Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

* src/sfnt/sfdriver.c (ROTL32): New macro.
(fmix32, murmur_hash_3_128): New functions.
2017-03-14 19:32:12 +01:00
Werner Lemberg 447a0b6263 [truetype] Ignore invalid MVAR tags.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=838

* src/truetype/ttgxvar.c (ft_var_load_mvar): Ignore value and emit
warning for invalid tags.
(tt_apply_mvar): Ignore invalid tags.
2017-03-13 07:42:34 +01:00
Werner Lemberg 5eb0fd5e97 [truetype] Store and use design coordinates also.
* include/freetype/internal/services/svmm.h (FT_Get_Var_Blend_Func):
Add `normalizedcoords' argument.

* src/truetype/ttgxvar.h (GX_BlendRec): Add `coords' field to store
the design coordinates of the current instance.
Updated.

* src/truetype/ttgxvar.c (TT_Set_MM_Blend): Move functionality to...
(tt_set_mm_blend): ... New function.
Convert data in `normalizedcoords' array to `coords' array on
demand.
(TT_Set_Var_Design): Store argument data in `coords' array.
(TT_Get_Var_Design): Get data from `coords' array.
(tt_get_var_blend): Updated.
(tt_done_blend): Updated.

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

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

* src/cff/cffobjs.c (cff_face_init): Updated.
2017-03-12 20:46:56 +01:00
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
Werner Lemberg 4191b7761b Add framework to support services with 8 functions.
We will need this for CFF variation font support.

* include/freetype/internal/ftserv.h (FT_DEFINE_SERVICEDESCREC8):
New macro.
2016-12-08 22:33:46 +01:00
Werner Lemberg 29aa957767 [sfnt] Add `get_glyph_name' and `get_name_index' to SFNT interface.
CFF2 fonts will need access to those two functions.

* include/freetype/internal/sfnt.h: Include FT_SERVICE_GLYPH_DICT_H.
(SFNT_Interface): Add `get_glyph_name' and `get_name_index' members.
(FT_DEFINE_SFNT_INTERFACE): Updated.

* src/sfnt/sfdriver.c (sfnt_get_glyph_name, sfnt_get_name_index):
Fix signatures to exactly correspond to the glyph dict service
function typedefs.
(sfnt_interface): Updated.
2016-12-08 08:59:34 +01:00
Dave Arnold bcae657482 Add `FT_Get_Var_Design_Coordinates' function.
Note that the low-level functions aren't implemented yet.

* include/freetype/ftmm.h: Declare.

* include/freetype/internal/services/svmm.h
(FT_Get_Var_Design_Func): New typedef.
(MultiMasters): New MM service function `get_var_design'.
(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.
Update all callers.

* src/base/ftmm.c (FT_Get_Var_Design_Coordinates): Implement.

* src/truetype/ttdriver.c: Updated.

* src/truetype/ttgxvar.c (TT_Get_Var_Design): New dummy function to
handle `get_var_design' service.
* src/truetype/ttgxvar.h: Updated.

* src/type1/t1driver.c: Updated.

* src/type1/t1load.c (T1_Get_Var_Design): New dummp function to
handle `get_var_design' service.
* src/type1/t1load.h: Updated.
2016-12-06 11:49:15 +01:00
Werner Lemberg c0fae7da5a * src/type1/t1load.c (parse_subrs): Fix memory leak.
The `subrs' keyword might erroneously occur multiple times.

Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=231
2016-12-06 11:13:19 +01:00
Werner Lemberg 602be7c810 [gzip] Improve building with external zlib (#49673).
Building FreeType with external zlib 1.2.8 makes msvc 14 stop with
the following error.

  ftgzip.c
  zlib-1.2.8\zlib.h(86): error C2061:
                         syntax error: identifier 'z_const'
  zlib-1.2.8\zlib.h(94): error C2054:
                         expected '(' to follow 'z_const'
  zlib-1.2.8\zlib.h(94): error C2085:
                         'msg': not in formal parameter list
  ...
  zlib-1.2.8\zlib.h(877): fatal error C1003:
                          error count exceeds 100; stopping compilation

The error happens because FreeType keeps an own copy of zlib-1.1.4
under `src/gzip'.  When building `src/gzip/ftgzip.c' with
FT_CONFIG_OPTION_SYSTEM_ZLIB defined, it uses

  #include <zlib.h>

which correctly finds an external `zlib.h', but `zlib.h' itself has
a line

  #include "zconf.h"

which makes Visual Studio 2015 find `src/gzip/zconf.h' while
compiling the files in `src/gzip'.

* src/gzip/zconf.h: Rename to...
* src/gzip/ftzconf.h: ... this.
* src/gzip/zlib.h, src/gzip/rules.mk (GZIP_DRV_SRCS): Updated.
2016-12-01 11:36:37 +01:00
Oleksandr Chekhovskyi 255828c891 [autofit] Fix Emscripten crash (patch #9180).
Function calls through pointers must use a matching signature to
work on Emscripten, since such calls are dispatched through lookup
tables grouped by signature.

* src/autofit/aftypes.h (AF_WritingSystem_ApplyHintsFunc): Fix
typedef.
2016-12-01 07:07:22 +01:00
Werner Lemberg 1d28f697d2 [smooth] Revert previous commit. Already fixed with 6ca54c64. 2016-11-29 18:45:22 +01:00
Werner Lemberg d949a3db58 [smooth] Avoid conditional jump on uninitialized value (#49711).
* src/smooth/ftgrays.c (gray_raster_render): Initialize `worker'.
2016-11-29 12:09:56 +01:00
Nikolaus Waxweiler b37b799c56 [autofit] Code shuffling.
Also improve some comments and remove unused code.

No functional change.

* src/autofit/afloader.c (af_loader_load_g): Merged with...
(af_loader_load_glyph): ...this function.
Split off emboldening code into...
(af_loader_embolden_glyph_in_slot): ... this function.
2016-11-27 16:30:53 +01:00
Werner Lemberg 7815050334 Better support of LLP64 systems with gcc (and clang).
* builds/unix/configure.raw: Call `AC_TYPE_LONG_LONG_INT'.

* builds/unix/ftconfig.in (FT_LONG64): Enable for LLP64 systems (and
suppress warnings) even without `FT_CONFIG_OPTION_FORCE_INT64'.
2016-11-17 12:00:20 +01:00
Werner Lemberg dd26e3d07c Fix `lcd_weights' array size.
* include/freetype/internal/ftobjs.h (FT_LibraryRec): Do it.

Reported by Nikolaus.
2016-11-10 12:03:32 +01:00
Werner Lemberg e1ee5476a4 * src/base/ftobjs.c (FT_Render_Glyph_Internal): Fix tracing. 2016-11-06 12:39:05 +01:00
Werner Lemberg 1c6fd99437 [sfnt] Improve FT_LOAD_BITMAP_METRICS_ONLY for `sbix' format.
It's unavoidable to call the PNG engine, but to get the metrics it
is sufficient to read the PNG image's header only.

* src/sfnt/pngshim.c (Load_SBit_Png): Add argument to control the
allocation of the glyph slot.
* src/sfnt/pngshim.h: Updated.
* src/sfnt/ttsbit.c (tt_sbit_decoder_load_png,
tt_face_load_sbix_image, tt_face_load_sbit_image): Updated.
2016-11-06 12:37:55 +01:00
Werner Lemberg 565db95b5c [sfnt] Speed up `sbix' lookup.
This also fixes a bug introduced in 2016-10-01 which prevents
display of embedded bitmap fonts that use the `sbix' format.

* src/sfnt/ttsbit.c (tt_face_load_sbit): Store `sbix' size and
offset also in `ebdt_size' and `ebdt_start', respectively.  This
makes the test for an embedded bitmap data table succeed for this
format.

(tt_face_load_strike_metrics) <TT_SBIT_TABLE_TYPE_SBIX>: Use
`ebdt_size' and `ebdt_start'
(tt_face_load_sbix_image): Ditto.
2016-11-06 12:33:51 +01:00
Werner Lemberg 37e193e935 Introduce a way of quickly retrieving (embedded) bitmap metrics.
`FT_Load_Glyph' doesn't generate a bitmap for a non-bitmap glyph
until the user calls `FT_Render_Glyph'.  However, it always
allocates memory for bitmaps and copies or decodes the contents of a
bitmap glyph, which can be quite slow for PNG data.

* include/freetype/freetype.h (FT_LOAD_BITMAP_METRICS_ONLY): New
macro.

* src/base/ftobjs.c (FT_Load_Glyph): Unset FT_LOAD_RENDER if
FT_LOAD_BITMAP_METRICS_ONLY is used.

* src/sfnt/ttsbit.c (tt_sbit_decoder_alloc_bitmap,
tt_sbit_decoder_load_bitmap): Add argument to control allocation of
the glyph slot.
(tt_sbit_decoder_load_image, tt_sbit_decoder_load_compound,
tt_face_load_sbit_image): Updated.

* src/pcf/pcfdrivr.c (PCF_Glyph_Load): Quickly exit if
`FT_LOAD_BITMAP_METRICS_ONLY' is set.

* src/pfr/pfrsbit.c, src/pfr/pfrsbit.h (pfr_slot_load_bitmap): Add
argument to control allocation of the glyph slot.
* src/pfr/pfrobjs (pfr_slot_load): Updated.

* src/winfonts/winfnt.c (FNT_Load_Glyph): Ditto.

* docs/CHANGES: Updated.
2016-11-06 12:32:51 +01:00
Werner Lemberg 57f73d1f77 Synchronize with gnulib (#49448).
* include/freetype/config/ftconfig.h, builds/unix/ftconfig.in,
builds/vms/ftconfig.h (FT_TYPEOF): Update code to use definition in
current version of `intprops.h'.
Other minor synchronization to reduce code differences between the
three files.
2016-11-06 06:06:30 +01:00
Behdad Esfahbod b72858c992 [truetype] Clamp variation requests to valid range.
This is required by OpenType 1.8; it also avoids rounding surprises.

* src/truetype/ttgxvar.c (TT_Set_Var_Design): Clamp design coordinates
outside of the allowed range to always stay within the range instead
of producing an error.
2016-11-03 06:41:00 +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 ddf3872699 [truetype] Fix commit from 2014-11-24.
Problem reported by Hin-Tak Leung  <htl10@users.sourceforge.net>.

* src/truetype/ttpload.c (tt_face_load_hdmx): Fix file checking
logic.
2016-10-27 07:27:27 +02:00
Werner Lemberg 9c45ac3966 Add `FT_Get_{MM,Var}_Blend_Coordinates' functions.
* include/freetype/ftmm.h: Declare.

* include/freetype/internal/services/svmm.h (FT_Get_MM_Blend_Func):
New typedef.
(MultiMasters): New MM service function `get_mm_blend'.
(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.
Update all callers.

* src/base/ftmm.c (FT_Get_MM_Blend_Coordinates,
FT_Get_Var_Blend_Coordinates): Implement.

* src/truetype/ttdriver.c: Updated.

* src/truetype/ttgxvar.c (TT_Get_MM_Blend): New function to handle
`get_mm_blend' service.
* src/truetype/ttgxvar.h: Updated.

* src/type1/t1driver.c: Updated.

* src/type1/t1load.c (T1_Get_MM_Blend): New function to handle
`get_mm_blend' service.
* src/type1/t1load.h: Updated.

* docs/CHANGES: Document.
2016-10-26 16:00:00 +02:00
Werner Lemberg 5614090725 * src/type1/t1load.c (parse_subrs): Fix limit check.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=81
2016-10-26 08:10:59 +02:00
Alexei Podtelezhnikov c5f1bc4b36 [cff] Correct cmap format reporting (#24819).
* src/cff/cffdrivr.c (cff_get_cmap_info): Throw an error on synthetic
charmap instead of guessing its format and language.
2016-10-25 22:31:42 -04:00
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 577414030a [sfnt] Improve handling of invalid post 2.5 tables [#49393].
* src/sfnt/ttpost.c (load_format_25): We need at least a single
table entry.
2016-10-22 18:34:48 +02:00
Werner Lemberg 7eeaf986b5 [truetype] Fix handling of `cvar' table data.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53

* src/truetype/ttgxvar.c (tt_face_vary_cvt): Ignore invalid CVT
indices.
2016-10-14 08:58:17 +02:00
Werner Lemberg 9c54d1246a [psaux] Fix handling of invalid flex subrs.
Problem reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=52

* src/psaux/t1decode.c (t1_decoder_parse_charstrings)
<op_callothersubr>: Set `flex_state' after error checking.
2016-10-11 08:57:55 +02:00
Werner Lemberg 922812281c * src/truetype/ttgxvar.c (tt_done_blend): Fix deallocation. 2016-10-11 07:12:12 +02:00
Werner Lemberg 6b35493115 * src/cid/cidload.c (cid_face_open): Properly propagate `error'. 2016-10-08 20:26:59 +02:00
Werner Lemberg d61b042568 [cid] Fix parsing of subr offsets.
Bug introduced 2016-05-16.

* src/cid/cidparse.c (cid_parser_new): Fix off-by-one error.
2016-10-08 19:20:33 +02:00
Werner Lemberg fcc0ee80e1 [sfnt] Disable bitmap strikes if we don't have a bitmap data table.
* src/sfnt/ttsbit.c (tt_face_load_sbit): Check whether we have
a bitmap data table.
2016-10-01 20:12:25 +02:00
Alexei Podtelezhnikov b0aacff474 [smooth] Remove impossibility.
* src/smooth/ftgrays.c (TWorker): Rearrange fields.
(gray_convert_glyph): Remove impossible condition and clean up.
2016-10-01 12:55:33 -04:00
Werner Lemberg 3576487add [pcf] Enrich family name with foundry name and glyph width info.
This is a very old patch from openSuSE (from 2006, submitted to
FreeType in 2011) that I forgot to apply.

  https://build.opensuse.org/package/view_file/openSUSE:Factory/freetype2/freetype2-bitmap-foundry.patch

Prepend the foundry name plus a space to the family name.  There are
many fonts just called `Fixed' which look completely different, and
which have nothing to do with each other.  When selecting `Fixed' in
KDE or Gnome one gets results that appear rather random, the style
changes often if one changes the size and one cannot select some
fonts at all.

We also check whether we have `wide' characters; all put together,
we get family names like `Sony Fixed' or `Misc Fixed Wide'.

* src/pcf/pcfread.c (pcf_load_font): Implement it.

* docs/CHANGES: Document it.
2016-09-30 08:11:52 +02:00
Werner Lemberg 71b617d8b7 [ftfuzzer] Speed up.
* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Don't
check for embedded bitmaps if we have a non-default instance.
2016-09-29 19:53:39 +02:00
Werner Lemberg 2067c6985a [truetype] Disallow bitmap strokes for non-default instances.
Also speed up access of default instances if GX variations are
active.

* include/freetype/internal/tttypes.h (TT_FaceRec): Add
`is_default_instance' member.

* src/sfnt/sfobjs.c (sfnt_init_face): Initialize
`is_default_instance'.

* src/truetype/ttgload.c (TT_Process_Simple_Glyph,
load_truetype_glyph): Add test for default instance.
(TT_Load_Glyph): Load embedded bitmaps for default instance only.

* src/truetype/ttgxvar.c (TT_Set_MM_Blend): Compute
`is_default_instance'.
2016-09-29 19:49:07 +02:00
Werner Lemberg bf90239ca5 [truetype] Clean up `TT_Face' structure.
* include/freetype/internal/tttypes.h (TT_FaceRec): Remove unused
fields `horz_metrics' and `vert_metrics'.
Update documentation.

* src/sfnt/sfobjs.c (sfnt_done_face): Updated.
2016-09-29 13:04:46 +02:00
Werner Lemberg 45cad2e5e1 More FT_ZERO usage.
* src/gxvalid/gxvcommn.c (gxv_ClassTable_validate):
s/ft_memset/FT_MEM_ZERO/.

* src/psaux/t1decode.c (t1_decoder_parse_charstrings):
s/ft_memset/FT_ARRAY_ZERO/.

* src/raster/ftraster.c (FT_ZERO): Define.
(ft_black_new): Use it.
* src/raster/ftrend1.c (ft_raster1_get_cbox):
s/FT_MEM_ZERO/FT_ZERO/.

* src/smooth/ftgrays.c (FT_ZERO): Define.
(gray_raster_new): Use it.
* src/smooth/ftsmooth.c (ft_smooth_get_cbox):
s/FT_MEM_ZERO/FT_ZERO/.
2016-09-28 19:10:52 +02:00
Werner Lemberg 2ecf89b481 */*: s/FT_MEM_ZERO/FT_ZERO/ where appropriate. 2016-09-28 19:06:21 +02:00
Werner Lemberg a3e2c83234 [truetype] Trace number of executed opcodes.
* src/truetype/ttinterp.c (TT_RunIns): Implement it.
2016-09-27 21:42:02 +02:00
Werner Lemberg e27b8a5598 [truetype] Speed up `TT_Load_Glyph'.
This avoids additional calls to `tt_face_lookup_table' for the
`glyf' table, which can be expensive.

* include/freetype/internal/tttypes.h (TT_LoaderRec): Move
`glyf_offset' field to ...
(TT_FaceRec): ... this structure.
* src/truetype/ttgload.c (load_truetype_glyph): Updated.
(tt_loader_init): Move initialization of `glyf_offset' to ...
* src/truetype/ttpload.c (tt_face_load_loca): .. this function.
2016-09-27 21:21:01 +02:00
Werner Lemberg 0d94592942 [truetype] Introduce dynamic limits for some bytecode opcodes.
This speeds up FreeType's handling of malformed fonts.

* src/truetype/ttinterp.c (TT_RunIns): Set up limits for the number
of twilight points, the total number of negative jumps, and the
total number of loops in LOOPCALL opcodes.  The values are based on
the number of points and entries in the CVT table.
(Ins_JMPR): Test negative jump counter.
(Ins_LOOPCALL): Test loopcall counter.

* src/truetype/ttinterp.h (TT_ExecContext): Updated.

* docs/CHANGES: Updated.
2016-09-27 08:44:31 +02:00
Werner Lemberg a764963f26 [truetype] Sanitize only last entry of `loca' table.
Without this patch, a loca sequence like `0 100000 0 100000 ...',
where value 100000 is larger than the `glyf' table size, makes
FreeType handle the whole `glyf' table as a single glyph again and
again, which is certainly invalid (and can be very slow, too).

* src/truetype/ttpload.c (tt_face_get_location): Implement.
Improve tracing messages.
2016-09-25 16:29:05 +02:00
Werner Lemberg d11e8b6e6d * src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Fix typo. 2016-09-25 15:32:04 +02:00
Werner Lemberg 2f2e73c50c [autofit] Tracing fixes.
* src/autofit/afmodule.c (af_autofitter_load_glyph): Call dumping
functions only if we actually do tracing.
2016-09-24 22:42:58 +02:00
Alexei Podtelezhnikov 53ae7a542d [smooth] Reduce divisions in the line renderer.
We don't need some divisions if a line segments stays within a single
row or a single column of pixels.

* src/smooth/ftgrays.c (gray_render_line) [FT_LONG64]: Make divisions
conditional.
2016-09-22 22:48:15 -04:00
Alexei Podtelezhnikov d5f7533e8e * src/smooth/ftgrays.c (gray_sweep): Remove check for empty table. 2016-09-15 00:13:36 -04:00
Alexei Podtelezhnikov ad47550b80 [smooth] Another tiny speed-up.
* src/smooth/ftgrays.c (gray_find_cell): Merge into...
(gray_record_cell): ... this function.
2016-09-14 23:15:03 -04:00
Alexei Podtelezhnikov c38be52bf8 * src/smooth/ftgrays.c (gray_{find,set}_cell): Remove dubious code. 2016-09-11 22:44:44 -04:00
Alexei Podtelezhnikov 6ca54c6430 [smooth] Fix valgrind warning and reoptimize.
The algorithm calls `gray_set_cell' at the start of each new contour
or when the contours cross the cell boundaries. Double-checking for
that is wasteful.

* src/smooth/ftgrays.c (gray_set_cell): Remove check for a new cell.
(gray_convert_glyph): Remove initialization introduced by 44b172e88.
2016-09-11 16:00:52 -04:00