shithub: freetype+ttf2subf

ref: f0898b9259d4b3b99a1e720924683730dd36d3db
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2017-08-25  Alexei Podtelezhnikov  <[email protected]>

	Swap `ALLOC_MULT' arguments (#51833).

	* src/base/ftbitmap.c (ft_bitmap_assure_buffer): Updated.
	* src/winfonts/winfnt.c (FNT_Load_Glyph): Updated.
	* src/raster/ftrend1.c (ft_raster1_render): Updated.

2017-08-23  Werner Lemberg  <[email protected]>

	[sfnt] Fix clang compilation (#51788).

	* src/sfnt/pngshim.c (premultiply_data): Use vectors instead of
	scalars.
	(vector_shuffle): New macro to take care of a different built-in
	function name on clang.

2017-08-22  Werner Lemberg  <[email protected]>

	[base] Don't zero out allocated memory twice (#51816).

	Patch applied from bug report.

	* src/base/ftutil.c (ft_mem_qrealloc): Use low-level allocation to
	avoid unnecessary overhead.

2017-08-22  Werner Lemberg  <[email protected]>

	[truetype] Integer overflow.

	Changes triggered by

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

	* src/truetype/ttinterp.c (Ins_MDRP, Ins_MIRP, Ins_ALIGNPTS): Use
	NEG_LONG.

2017-08-17  Alexei Podtelezhnikov  <[email protected]>

	[sfnt] Avoid synthetic unicode for symbol fonts with PUA.

	Reported as

	  https://bugs.chromium.org/p/chromium/issues/detail?id=754574

	* src/sfnt/sfobjs.c (sfnt_load_face): Check for FT_ENCODING_MS_SYMBOL.

2017-08-16  Werner Lemberg  <[email protected]>

	* src/sfnt/pngshim.c (premultiply_data): Fix compiler warnings.

2017-08-15  Behdad Esfahbod  <[email protected]>

	[sfnt] Speed up PNG image loading.

	This reduces the overhead of `premultiply_data' by 60%.

	* src/sfnt/pngshim.c (premultiply_data): Provide code which uses
	gcc's (and clang's) `vector_byte' attribute to process 4 pixels at a
	time.

2017-08-11  Werner Lemberg  <[email protected]>

	[sfnt, truetype] Improve handling of missing sbits.

	Requested by Behdad.

	Modern bitmap-only SFNTs like `NotoColorEmoji.ttf' don't contain
	entries in the bitmap strike(s) for empty glyphs.  Instead, they
	rely that a space glyph gets created from the font's metrics data.
	This commit makes FreeType behave accordingly.

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

	* src/sfnt/ttsbit.c (tt_sbit_decoder_load_image): Change error codes
	to make a distinction between a missing bitmap in a composite and a
	simple missing bitmap.

	* src/truetype/ttgload.c (TT_Load_Glyph): For a missing bitmap (in a
	bitmap-only font), synthesize an empty bitmap glyph if metrics are
	available.

2017-08-10  Werner Lemberg  <[email protected]>

	[base] Minor API improvement for default variation axis setting.

	* src/base/ftmm.c (FT_Set_MM_Design_Coordinates,
	FT_Set_Var_Design_Coordinates, FT_Set_MM_Blend_Coordinates,
	FT_Set_Var_Blend_Coordinates): Allow coords==NULL if num_coords==0.

	* docs/CHANGES: Updated.

2017-08-08  Werner Lemberg  <[email protected]>

	[psnames] Really fix issue #49949.

	We now use a separate preprocessor macro to handle both definition
	and declaration of the glyph name arrays.

	* src/psnames/psmodule.c (DEFINE_PS_TABLE_DATA): New macro.

	* src/tools/glnames.py (StringTable::dump,
	StringTable::dump_sublist): Use `DEFINE_PS_TABLE_DATA'.
	(dump_encoding): Ditto.
	(main): Use `wb' mode for writing the output file, which works on
	Windows also.

	* src/psnames/pstables.h: Regenerated.

2017-08-08  Alexei Podtelezhnikov  <[email protected]>

	[smooth] Harmony LCD rendering.

	This is a new technology for LCD-optimized rendering. It capitalizes
	on the fact that each color channel grid is shifted by a third of a
	pixel.  Therefore it is logical to render 3 separate monochrome
	bitmaps shifting the outline by 1/3 pixel, and then combine them.
	Importantly, the resulting output does not require additional LCD
	filtering.

	* src/smooth/ftsmooth.c (ft_smooth_render_generic)
	[!FT_CONFIG_OPTION_SUBPIXEL_RENDERING]: Implement new LCD-optimized
	rendering.

	* include/freetype/ftlcdfil.h, include/freetype/freetype.h,
	include/freetype/config/ftoption.h, devel/ftoption.h: Updated
	documentation.

2017-08-08  Alexei Podtelezhnikov  <[email protected]>

	* src/smooth/ftsmooth.c (ft_smooth_render_generic): Clean up.

2017-08-08  Alexei Podtelezhnikov  <[email protected]>

	* src/sftnt/ttpost.c (format): Use otspec-compliant versions. 

2017-08-05  Werner Lemberg  <[email protected]>

	[truetype] Integer overflow.

	Reported as

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

	* src/truetype/ttinterp.c (Ins_ALIGNRP): Use NEG_LONG.

2017-08-05  Werner Lemberg  <[email protected]>

	[base, truetype] New function `FT_Get_Var_Axis_Flags'.

	The reserved `flags' field got a value in OpenType version 1.8.2;
	unfortunately, the public `FT_Var_Axis' structure misses the
	corresponding element.  Since we can't add a new field, we add an
	access function.

	* src/base/ftmm.c (FT_Get_Var_Axis_Flags): New function.

	* include/freetype/ftmm.h (FT_VAR_AXIS_FLAG_HIDDEN): New macro.
	Updated.

	* src/truetype/ttgxvar.c (TT_Get_MM_Var): Increase allocated memory
	of `mmvar' to hold axis flags.
	Fill the axis flags array.

	* docs/CHANGES: Updated.

2017-08-03  Nikolaus Waxweiler  <[email protected]>

	[truetype] Fix metrics of B/W hinting in v40 mode.

	Phantom points are now saved outside v40 backwards compatibility
	mode.  This fixes the jumping glyphs when switching between v35 and
	v40 monochrome mode.

	* src/truetype/ttgload.c (TT_Hint_Glyph): Fix inversed bool logic.

2017-08-03  Nikolaus Waxweiler  <[email protected]>

	[truetype] Do not set any ClearType flags in v40 monochrome mode.

	This fixes weird behavior of instructions that resulted in rendering
	differences between v35 and v40 in monochrome mode, e.g., in
	`timesbi.ttf'.

	* src/truetype/ttinterp.c (Ins_GETINFO)
	[TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL]: Check
	`subpixel_hinting_lean'.

2017-08-01  Werner Lemberg  <[email protected]>

	* src/truetype/ttgxvar.c (TT_Get_MM_Var): Fix thinko.

2017-08-01  Behdad Esfahbod  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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.

2017-07-26  Werner Lemberg  <[email protected]>

	[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.

2017-07-13  Werner Lemberg  <[email protected]>

	[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.

2017-07-12  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	* 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

2017-07-07  Werner Lemberg  <[email protected]>

	[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.

2017-07-05  Werner Lemberg  <[email protected]>

	* src/sfnt/ttcmap.c (tt_cmap_unicode_class_rec): Fix warning.

2017-07-05  Werner Lemberg  <[email protected]>

	* src/truetype/ttgxvar.c (FT_Stream_SeekSet): Fix warning (#51395).

2017-07-04  Werner Lemberg  <[email protected]>

	[truetype] Prevent address overflow (#51365).

	* src/truetype/ttgxvar.c (FT_Stream_SeekSet): Add guard.

2017-07-03  Alexei Podtelezhnikov  <[email protected]>

	* src/base/ftlcdfil.c (ft_lcd_filter_fir): Improve code.

2017-07-03  Werner Lemberg  <[email protected]>

	[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.

2017-07-01  Alexei Podtelezhnikov  <[email protected]>

	* src/sfnt/sfobjs.c (sfnt_load_face): Ignore No_Unicode_Glyph_Name.

2017-06-28  Ben Wagner  <[email protected]>

	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.

2017-06-27  Werner Lemberg  <[email protected]>

	* src/cff/cffparse.c (do_fixed): Fix typo.

	Spotted by chris <[email protected]>.

2017-06-27  Werner Lemberg  <[email protected]>

	[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.

2017-06-24  Werner Lemberg  <[email protected]>

	[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.

2017-06-22  Werner Lemberg  <[email protected]>

	[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.

2017-06-21  Alexei Podtelezhnikov  <[email protected]>

	[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.

2017-06-20  Tony Theodore  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	[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.

2017-06-17  Alexei Podtelezhnikov  <[email protected]>

	[base, smooth] LCD filtering cleanups.

	* src/base/ftlcdfil.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.

2017-06-16  Werner Lemberg  <[email protected]>

	[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=2276

	* src/truetype/ttinterp.c (Ins_MDRP, _iup_worker_interpolate): Use
	ADD_LONG and SUB_LONG.

2017-06-15  Werner Lemberg  <[email protected]>

	[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.

2017-06-13  Werner Lemberg  <[email protected]>

	* src/winfonts/winfnt.c (FNT_Face_Init): Don't set active encoding.

	FreeType only sets a default active encoding for Unicode.

2017-06-13  Werner Lemberg  <[email protected]>

	[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.

2017-06-11  Werner Lemberg  <[email protected]>

	[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.

2017-06-10  Werner Lemberg  <[email protected]>

	[truetype] Fix TT_Set_Var_Design.

	Reported by Nikolaus Waxweiler <[email protected]>.

	* src/truetype/ttgxvar.c (TT_Set_Var_Design): Correctly handle the
	case where we have less input coordinates than axes.

2017-06-10  Werner Lemberg  <[email protected]>

	* src/base/ftcalc.c (FT_DivFix): Fix embarrassing typo.

	Bug introduced 2017-05-28.

2017-06-09  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	Remove unused macros.

	* include/freetype/internal/ftcalc.h (ADD_INT, SUB_INT, MUL_INT,
	NEG_INT): Deleted.

2017-06-09  Werner Lemberg  <[email protected]>

	*/*: Remove `OVERFLOW_' prefix.

	This increases readability.

2017-06-07  Werner Lemberg  <[email protected]>

	[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.

2017-06-06  Werner Lemberg  <[email protected]>

	[cff] Integer overflows.

	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.

2017-06-05  Werner Lemberg  <[email protected]>

	[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.

2017-06-04  Werner Lemberg  <[email protected]>

	[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.

2017-06-03  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	* builds/unix/freetype-config.in: Fix pkg-config test (#51162).

	Patch directly taken from bug report.

2017-06-03  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	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.

2017-06-02  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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.

2017-06-01  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	* src/base/ftglyph.c (FT_Get_Glyph): Check `slot->advance'.

2017-06-01  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	* src/truetype/ttinterp.c (TT_RunIns): Adjust loop counter again.

	Problem reported by Marek Kašík <[email protected]>.

	The problematic font that exceeds the old limit is Padauk-Bold,
	version 3.002, containing bytecode generated by a buggy version of
	ttfautohint.

2017-05-31  Werner Lemberg  <[email protected]>

	[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.

2017-05-30  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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.

2017-05-29  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	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.

2017-05-28  Werner Lemberg  <[email protected]>

	* include/freetype/internal/ftcalc.h (FLOAT_TO_FIXED): Remove.

	This macro is not used.

2017-05-28  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	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.

2017-05-27  Werner Lemberg  <[email protected]>

	[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.

2017-05-24  Werner Lemberg  <[email protected]>

	[bdf, pcf] Support ISO646.1991-IRV character encoding (aka ASCII).

	Problem reported by Marek Kašík <[email protected]>, 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.

2017-05-20  Nikolaus Waxweiler  <[email protected]>

	[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  Alexei Podtelezhnikov  <[email protected]>

	[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.

2017-05-15  Werner Lemberg  <[email protected]>

	[sfnt] Return proper scaling values for SBIX bitmaps.

	Problem reported by Hin-Tak Leung <[email protected]>.

	* src/sfnt/ttsbit.c (tt_face_load_strike_metrics): Implement it.

2017-05-15  Werner Lemberg  <[email protected]>

	[truetype] Fix error handling for embedded bitmaps.

	Problem reported by Hin-Tak Leung <[email protected]>.

	* src/truetype/ttgload.c (TT_Load_Glyph)
	[TT_CONFIG_OPTION_EMBEDDED_BITMAPS]: Handle error if font is not
	scalable.

2017-05-15  Alexei Podtelezhnikov  <[email protected]>

	[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.

2017-05-14  Werner Lemberg  <[email protected]>

	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.

2017-05-13  Werner Lemberg  <[email protected]>

	* 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.

2017-05-12  Hin-Tak Leung  <[email protected]>

	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.

2017-05-11  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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.

2017-05-10  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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.

2017-05-08  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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.

2017-05-07  Werner Lemberg  <[email protected]>

	[truetype] Add tricky font `DFGirl-W6-WIN-BF' (from Dynalab).

	Reported by Roy Tam <[email protected]>.

	* src/truetype/ttobjs.c (tt_check_trickyness_family): Implement it.

2017-05-07  Roy Tam  <[email protected]>
	    Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[truetype] Add tricky font `DLCHayMedium' (from Dynalab).

	Reported by Roy Tam <[email protected]>.

	* src/truetype/ttobjs.c (tt_check_trickyness_family): Implement it.

2017-05-03  Werner Lemberg  <[email protected]>

	*/*: s/backwards compatibility/backward compatibility/.

2017-05-03  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]>

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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.

2017-05-02  Behdad Esfahbod  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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.

2017-04-30  Werner Lemberg  <[email protected]>

	[autofit] Fix metrics computation.

	Problem reported by Markus Trippelsdorf <[email protected]> and
	Nikolaus Waxweiler <[email protected]>.

	* 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.

2017-04-29  Werner Lemberg  <[email protected]>

	* src/truetype/ttdriver.c (tt_size_request): Properly check `error'.

	Reported by Earnestly <[email protected]> in

	  http://lists.nongnu.org/archive/html/freetype/2017-04/msg00031.html

2017-04-27  Werner Lemberg  <[email protected]>

	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.

2017-04-26  Werner Lemberg  <[email protected]>

	* include/freetype/freetype.h (FT_Render_Mode): Fix order.

	This retains backward compatibility.

	Noted by Alexei.

2017-04-22  Werner Lemberg  <[email protected]>

	[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.

2017-04-22  Werner Lemberg  <[email protected]>

	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 backward 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.

2017-04-22  Werner Lemberg  <[email protected]>

	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'.

2017-04-21  Alexei Podtelezhnikov  <[email protected]>

	* src/smooth/ftsmooth.h: Remove unused guards and declaration.

2017-04-16  Hin-Tak Leung  <[email protected]>

	Fix tracing messages.

	* src/base/ftobjs.c (FT_Face_GetCharVariantIndex,
	FT_Face_GetCharVariantIsDefault, FT_Face_GetVariantsOfChar): Print
	correct function name.

2017-04-08  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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.

2017-04-07  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[ftfuzzer] Fix clang warnings.

	* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Add
	casts.

2017-04-06  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>
	    Werner Lemberg  <[email protected]

	[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  Sascha Brawer  <[email protected]>

	[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  Sascha Brawer  <[email protected]>

	[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.

2017-04-03  Werner Lemberg  <[email protected]>

	[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.

2017-04-02  Alexei Podtelezhnikov  <[email protected]>

	[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.

2017-04-01  Werner Lemberg  <[email protected]>

	* src/truetype/ttgload.c: Include FT_CONFIG_CONFIG_H.

	Otherwise FT_UINT_TO_POINTER might not be defined.

	Problem reported by Alexei.

2017-03-31  Alexei Podtelezhnikov  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	* 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 <[email protected]> in

	  http://lists.nongnu.org/archive/html/freetype-devel/2017-03/msg00074.html

2017-03-30  Werner Lemberg  <[email protected]>

	* src/cff/cffparse.h (CFF2_DEFAULT_STACK): Set to 513 also.

	Requested by Dave Arnold.

2017-03-30  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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.

2017-03-29  Werner Lemberg  <[email protected]>

	[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.

2017-03-27  Werner Lemberg  <[email protected]>

	[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  Wojciech Mamrak  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[pcf] Fix compiler warnings.

	Reported by Alexander Hedges <[email protected]>.

	* src/pcf/pcfdrivr.c (pcf_property_set, pcf_property_get): Tag
	`property_name' with `FT_UNUSED' where necessary.

2017-03-26  Werner Lemberg  <[email protected]>

	* src/psaux/psobjs.c (t1_builder_close_contour): Add safety guard.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=941

2017-03-23  Werner Lemberg  <[email protected]>

	[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.

2017-03-23  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	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.

2017-03-20  Werner Lemberg  <[email protected]>

	[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_overrides,
	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/.

2017-03-20  Werner Lemberg  <[email protected]>

	[sfnt] Don't add instances to non-variation fonts.

	* src/sfnt/sfobjs.c (sfnt_init_face): Fix it.

2017-03-20  Werner Lemberg  <[email protected]>

	* src/cff/cffgload.c (cff_builder_init): Add safety guard (#50578).

2017-03-18  Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	* 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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[ftfuzzer] Minor improvement.

	* src/tools/ftfuzzer/ftfuzzer.cc: Don't set intermediate axis if
	bitmap strikes are active.

2017-03-18  Werner Lemberg  <[email protected]>

	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.

2017-03-17  Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	`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  Dave Arnold <[email protected]>

	[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  Dave Arnold <[email protected]>

	[cff] Fix CFF2 stack allocation.

	* src/cff/cffparse.c (cff_parser_init) add 1 for operator.

2017-03-16  Werner Lemberg  <[email protected]>

	* src/truetype/ttgxvar.c (tt_done_blend): Free `vvar_table'.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=883

2017-03-15  Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	* src/tools/ftfuzzer/ftfuzzer.cc: Improve readability; formatting.

2017-03-14  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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.

2017-03-13  Werner Lemberg  <[email protected]>

	[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.

2017-03-12  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	src/truetype/ttgxvar.[ch]: s/avar_checked/avar_loaded/.

2017-03-08  Werner Lemberg  <[email protected]>

	[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).

2017-03-07  Werner Lemberg  <[email protected]>

	[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' table present also (which gets priority).

2017-03-06  Werner Lemberg  <[email protected]>

	[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'.

2017-03-05  Werner Lemberg  <[email protected]>

	[sfnt] Remove redundant code.

	* src/sfnt/sfobjs.c (sfnt_init_face): Remove second test for
	`num_instances', which will always succeed.

2017-03-04  Werner Lemberg  <[email protected]>

	[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.

2017-03-04  Werner Lemberg  <[email protected]>

	[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.

2017-03-02  Werner Lemberg  <[email protected]>

	[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.

2017-02-28  Werner Lemberg  <[email protected]>

	[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.

2017-02-23  Werner Lemberg  <[email protected]>

	[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.

2017-02-23  Werner Lemberg  <[email protected]>

	[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.

2017-02-23  Werner Lemberg  <[email protected]>

	[truetype] Minor improvement.

	* src/truetype/ttgload.c (TT_Process_Simple_Glyph,
	load_truetype_glyph): Remove unnecessary tests.

2017-02-23  Werner Lemberg  <[email protected]>

	* include/freetype/internal/tttypes.h (TT_Face): s/isCFF2/is_cff2/.

	For orthogonality with other structure field names.

	Update all users.

2017-02-22  Alexei Podtelezhnikov  <[email protected]>

	* src/smooth/ftgrays.c (gray_hline): Improve code.

2017-02-20  Dominik Röttsches  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[cff] Sanitize `initialRandomSeed'.

	* src/cff/cffload.c (cff_load_private_dict): Make
	`initial_random_seed' value always positive.

2017-02-20  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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'.

2017-02-17  Werner Lemberg  <[email protected]>

	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.

2017-02-16  Nikolaus Waxweiler  <[email protected]>
	    Werner Lemberg  <[email protected]>

	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.

2017-02-16  Nikolaus Waxweiler  <[email protected]>
	    Werner Lemberg  <[email protected]>

	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_fir): ... 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'.

2017-02-14  Nikolaus Waxweiler  <[email protected]>
	    Werner Lemberg  <[email protected]>

	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.

2017-02-13  Werner Lemberg  <[email protected]>

	[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.

2017-02-12  Alexei Podtelezhnikov  <[email protected]>

	* src/smooth/ftgrays.c (gray_sweep): Improve code.

2017-02-06  Werner Lemberg  <[email protected]>

	[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.

2017-02-05  Werner Lemberg  <[email protected]>

	[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 <[email protected]>.

	* 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.

2017-02-04  Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	* builds/unix/unix-def.in (freetype-config): Fix permissions.

2017-02-03  Werner Lemberg  <[email protected]>

	* src/autofit/afglobal.c (af_face_globals_free): Erase useless code.

2017-02-03  Werner Lemberg  <[email protected]>

	* include/freetype/ftgasp.h (FT_GASP_SYMMETRIC_GRIDFIT): Fix value.

	Reported by Behdad.

2017-02-02  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	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.

2017-01-31  Alexei Podtelezhnikov  <[email protected]>

	* src/smooth/ftgrays.c (gray_render_scanline): Improve code.

2017-01-31  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	Add framework to support services with 9 functions.

	* include/freetype/internal/ftserv.h (FT_DEFINE_SERVICEDESCREC9):
	New macro.

2017-01-31  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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'.

2017-01-27  Werner Lemberg  <[email protected]>

	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.

2017-01-26  Werner Lemberg  <[email protected]>

	[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.

2017-01-26  Werner Lemberg  <[email protected]>

	[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.

2017-01-25  Werner Lemberg  <[email protected]>

	[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_name):
	Updated.

2017-01-24  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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.

2017-01-23  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[truetype] Minor updates for OpenType 1.8.1.

	* src/truetype/ttgxvar.h (GX_MVarTable): `axisCount' has been
	removed from 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  Werner Lemberg  <[email protected]>

	[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

2017-01-20  Werner Lemberg  <[email protected]>

	* src/truetype/ttinterp.c (TT_RunIns): Adjust loop detector limits.

2017-01-17  Werner Lemberg  <[email protected]>

	* 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.

2017-01-15  Werner Lemberg  <[email protected]>

	* src/truetype/ttgxvar.c (tt_apply_var): Handle underline parameters
	also.

2017-01-11  Werner Lemberg  <[email protected]>

	* src/base/ftobjs.c (ft_open_face_internal): Improve tracing.

2017-01-11  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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.

2017-01-09  Werner Lemberg  <[email protected]>

	[pcf] Disable long family names by default.

	* include/freetype/config/ftoption.h
	(PCF_CONFIG_OPTION_LONG_FAMILY_NAMES): Comment out.

2017-01-09  Werner Lemberg  <[email protected]>

	[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_services): 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  Werner Lemberg  <[email protected]>

	[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.

2017-01-08  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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).

2017-01-06  Werner Lemberg  <[email protected]>

	[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.

2017-01-06  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[truetype] Code shuffling.

	* src/truetype/ttgxvar.c (ft_var_load_hvar): 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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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'.

2017-01-04  Werner Lemberg  <[email protected]>

	* src/pcf/pcfdrivr.c (PCF_Face_Init): Trace compression format.

2017-01-04  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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.

2017-01-03  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	* src/cff/cffparse.c (cff_parse_num): Simplify.

2017-01-03  Werner Lemberg  <[email protected]>

	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_num): 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: Include `pstables.h' twice to get both
	declaration and definition.

	* src/truetype/ttgxvar.c (FT_fdot14ToFixed, FT_intToFixed): Fix
	casting.

2017-01-01  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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.

2016-12-31  Werner Lemberg  <[email protected]>

	*/*: Use hex numbers for errors in tracing messages.

2016-12-31  Werner Lemberg  <[email protected]>

	[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.

2016-12-30  Werner Lemberg  <[email protected]>

	* 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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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 repetition) out of the value set [1,N].
	(LLVMFuzzerTestOneInput): Use it to test only up to 10 bitmap
	strikes.

2016-12-29  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	* 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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	*/*: Use `0.5f' for tracing 16.16 numbers.

2016-12-29  Werner Lemberg  <[email protected]>

	[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.

2016-12-28  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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.

2016-12-27  Werner Lemberg  <[email protected]>

	Documentation updates.

	* docs/CHANGES: Add missing information.

	* docs/formats.txt: Rewritten and updated.

2016-12-27  Werner Lemberg  <[email protected]>

	[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.

2016-12-24  Werner Lemberg  <[email protected]>

	* src/truetype/ttpload.c (tt_face_load_hdmx): Ignore `version'.

	Problem reported by 張俊芝 <[email protected]>.

2016-12-24  Werner Lemberg  <[email protected]>

	* 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 <[email protected]>.

2016-12-24  Werner Lemberg  <[email protected]>

	* 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 <[email protected]>.

2016-12-24  Werner Lemberg  <[email protected]>

	* src/sfnt/sfobjs.c (sfnt_init_face): Fix tracing.

2016-12-22  Werner Lemberg  <[email protected]>

	* CMakeLists.txt: Make it work with cmake 2.8.11.2 (#49909).

2016-12-22  Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	* 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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[ftfuzzer] Always use Adobe CFF engine.

	* src/tools/ftfuzzer/ftfuzzer.cc (FT_Global::FT_Global): Implement
	it.

2016-12-21  Werner Lemberg  <[email protected]>

	* 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  Werner Lemberg  <[email protected]>

	[autofit] Support variation fonts.

	(This ChangeLog entry was added later on.)

	* src/autofit/afglobal.c (af_face_globals_free): Remove useless
	code.

	* src/base/ftmm.c (FT_Set_MM_Design_Coordinates,
	* FT_Set_Var_Design_Coordinates, FT_Set_MM_Blend_Coordinates,
	FT_Set_Var_Blend_Coordinates): Finalize
	auto-hinter data to enforce recomputation.  Note that this is a
	brute-force method which should be improved.

2016-12-21  Werner Lemberg  <[email protected]>

	* 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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[base] Improve sanity check for Mac resources (#49888).

	* src/base/ftobjs.c (Mac_Read_sfnt_Resource): Abort if `rlen' is not
	positive.

2016-12-20  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Ben Wagner  <[email protected]>
	    Werner Lemberg  <[email protected]>

	[truetype] Fix linear metrics of GX variation fonts (#49829).

	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.

	Problem also reported as

	  https://bugs.chromium.org/p/skia/issues/detail?id=5917

	* 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  Werner Lemberg  <[email protected]>

	[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.

2016-12-18  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	* src/cff/cffobjs.c (cff_face_init): Make named instances work.

2016-12-18  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	[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.

2016-12-17  Werner Lemberg  <[email protected]>

	* src/cff/cffload.c (cff_build_blend_vector): Remove redundant code.

2016-12-17  Werner Lemberg  <[email protected]>

	* src/truetype/ttobjs.c (tt_face_init): Simplify conditional code.

2016-12-17  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	* src/cff/cffload.c (cff_load_private_dict): Always init `blend'.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=295

2016-12-16  Werner Lemberg  <[email protected]>

	[truetype] Fix `cvar' sanity test.

	Reported by Dave Arnold.

	* src/truetype/ttgxvar.c (tt_face_vary_cvt): Use tuple count mask.

2016-12-16  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[cff] Fix heap buffer overflow (#49858).

	* src/cff/cffparse.c (cff_parser_run): Add one more stack size
	check.

2016-12-15  Werner Lemberg  <[email protected]>

	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  Dave Arnold  <[email protected]>
	    Werner Lemberg  <[email protected]>

	[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  Dave Arnold  <[email protected]>
	    Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>
	    Dave Arnold  <[email protected]>

	[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  Dave Arnold  <[email protected]>
	    Werner Lemberg  <[email protected]>

	[truetype] Provide function to apply `HVAR' advance width variation.

	Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

	* src/truetype/ttgxvar.c (tt_hadvance_adjust): New function.
	* src/truetype/ttgxvar.h: Updated.

2016-12-15  Dave Arnold  <[email protected]>
	    Werner Lemberg  <[email protected]>

	[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.

	Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

	* 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  Dave Arnold  <[email protected]>

	[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  Dave Arnold  <[email protected]>

	[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  Dave Arnold  <[email protected]>
	    Werner Lemberg  <[email protected]>

	[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.

2016-12-14  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	* src/truetype/ttgxvar.c (tt_get_var_blend): Fix compiler warning.

2016-12-14  Dave Arnold  <[email protected]>
	    Werner Lemberg  <[email protected]>

	[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.

2016-12-10  Werner Lemberg  <[email protected]>

	[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.

2016-12-10  Werner Lemberg  <[email protected]>

	[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.

2016-12-09  Werner Lemberg  <[email protected]>

	[sfnt] Revert change from 2016-12-08.

	I missed the functionality of `ft_module_get_service', which makes
	the change unnecessary.

2016-12-08  Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	[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.

2016-12-06  Dave Arnold  <[email protected]>

	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 dump function to
	handle `get_var_design' service.
	* src/type1/t1load.h: Updated.

2016-12-06  Werner Lemberg  <[email protected]>

	* 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

2016-12-01  Werner Lemberg  <[email protected]>

	[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  Oleksandr Chekhovskyi  <[email protected]>

	[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.

2016-11-29  Werner Lemberg  <[email protected]>

	[smooth] Revert previous commit.  Already fixed with 6ca54c64.

2016-11-29  Werner Lemberg  <[email protected]>

	[smooth] Avoid conditional jump on uninitialized value (#49711).

	* src/smooth/ftgrays.c (gray_raster_render): Initialize `worker'.

2016-11-27  Nikolaus Waxweiler  <[email protected]>

	[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.

2016-11-17  Werner Lemberg  <[email protected]>

	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'.

2016-11-10  Werner Lemberg  <[email protected]>

	Fix `lcd_weights' array size.

	* include/freetype/internal/ftobjs.h (FT_LibraryRec): Do it.

	Reported by Nikolaus.

2016-11-06  Werner Lemberg  <[email protected]>

	* src/base/ftobjs.c (FT_Render_Glyph_Internal): Fix tracing.

2016-11-06  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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  Seigo Nonaka  <[email protected]>
	    Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	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.

2016-11-03  Behdad Esfahbod  <[email protected]>

	[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.

2016-10-29  Werner Lemberg  <[email protected]>

	[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.

2016-10-27  Werner Lemberg  <[email protected]>

	[truetype] Fix commit from 2014-11-24.

	Problem reported by Hin-Tak Leung  <[email protected]>.

	* src/truetype/ttpload.c (tt_face_load_hdmx): Fix file checking
	logic.

2016-10-26  Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	* src/type1/t1load.c (parse_subrs): Fix limit check.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=81

2016-10-25  Alexei Podtelezhnikov  <[email protected]>

	[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.

2016-10-22  Werner Lemberg  <[email protected]>

	[truetype] Fix SCANTYPE instruction (#49394).

	* src/truetype/ttinterp.c (Ins_SCANTYPE): Only use lower 16bits.

2016-10-22  Werner Lemberg  <[email protected]>

	[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.

2016-10-14  Werner Lemberg  <[email protected]>

	[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.

2016-10-11  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	* src/truetype/ttgxvar.c (tt_done_blend): Fix deallocation.

2016-10-08  Werner Lemberg  <[email protected]>

	* src/cid/cidload.c (cid_face_open): Properly propagate `error'.

2016-10-08  Werner Lemberg  <[email protected]>

	[cid] Fix parsing of subr offsets.

	Bug introduced 2016-05-16.

	* src/cid/cidparse.c (cid_parser_new): Fix off-by-one error.

2016-10-01  Werner Lemberg  <[email protected]>

	[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  Alexei Podtelezhnikov  <[email protected]>

	[smooth] Remove impossibility.

	* src/smooth/ftgrays.c (TWorker): Rearrange fields.
	(gray_convert_glyph): Remove impossible condition and clean up.

2016-09-29  Werner Lemberg  <[email protected]>

	[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.

2016-09-29  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[truetype] Disallow bitmap strikes 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  Werner Lemberg  <[email protected]>

	[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.

2016-09-28  Werner Lemberg  <[email protected]>

	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  Werner Lemberg  <[email protected]>

	*/*: s/FT_MEM_ZERO/FT_ZERO/ where appropriate.

2016-09-27  Werner Lemberg  <[email protected]>

	[truetype] Trace number of executed opcodes.

	* src/truetype/ttinterp.c (TT_RunIns): Implement it.

2016-09-27  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	[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.

2016-09-25  Werner Lemberg  <[email protected]>

	[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  Werner Lemberg  <[email protected]>

	* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Fix typo.

2016-09-24  Werner Lemberg  <[email protected]>

	[autofit] Tracing fixes.

	* src/autofit/afmodule.c (af_autofitter_load_glyph): Call dumping
	functions only if we actually do tracing.

2016-09-22  Alexei Podtelezhnikov  <[email protected]>

	[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.

2016-09-15  Alexei Podtelezhnikov  <[email protected]>

	* src/smooth/ftgrays.c (gray_sweep): Remove check for empty table.

2016-09-14  Alexei Podtelezhnikov  <[email protected]>

	[smooth] Another tiny speed-up.

	* src/smooth/ftgrays.c (gray_find_cell): Merge into...
	(gray_record_cell): ... this function.

2016-09-11  Alexei Podtelezhnikov  <[email protected]>

	* src/smooth/ftgrays.c (gray_{find,set}_cell): Remove dubious code.

2016-09-11  Alexei Podtelezhnikov  <[email protected]>

	[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.

2016-09-10  Werner Lemberg  <[email protected]>

	[sfnt] Fix previous commit.

	Problems reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40

	We now map the strike index right before accessing the physical
	data, not earlier.

	* src/sfnt/sfobjs.c (sfnt_load_face): Set `face->sbit_strike_map'
	after creating the map so that...

	* src/sfnt/ttsbit.c (tt_face_load_strike_metrics): ... this function
	can be used before and after setting up `sbit_strike_map'.
	(tt_face_set_sbit_strike): Revert change.
	(tt_sbit_decoder_init, tt_face_load_sbix_image): Map strike index.

	* src/truetype/ttdriver.c (tt_size_select): Revert change.

2016-09-09  Werner Lemberg  <[email protected]>

	[ftfuzzer] Minor improvements.

	* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Ignore
	invalid strikes.
	Use better values for call to `FT_Set_Char_Size'.

2016-09-09  Werner Lemberg  <[email protected]>

	[sfnt] Don't provide (completely) broken strike data.

	FreeType tries to sanitize strike header data; we now reject
	completely broken ones.

	* include/freetype/internal/tttypes.h (TT_FaceRec): New
	`sbit_strike_map' array pointer.

	* src/base/ftobjs.c (FT_Match_Size): Reject matches where either
	width or height would be zero.
	Add tracing message in case of error.

	* src/sfnt/sfobjs.c (sfnt_load_face): Populate `sbit_strike_map',
	only using (more or less) valid strike header data for
	FT_Face's `available_sizes' array.
	(sfnt_done_face): Updated.

	* src/sfnt/ttsbit.c (tt_face_set_sbit_strike): Use
	`sbit_strike_map'.
	(tt_face_load_strike_metrics): Improve tracing.

	* src/truetype/ttdriver.c (tt_size_select): Use `sbit_strike_map'.

2016-09-08  Werner Lemberg  <[email protected]>

	* Version 2.7 released.
	=======================


	Tag sources with `VER-2-7'.

	* docs/VERSION.TXT: Add entry for version 2.7.

	* 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/2.6.5/2.7/, s/265/27/.

	* include/freetype/freetype.h (FREETYPE_MINOR): Set to 7.
	(FREETYPE_PATCH): Set to 0.

	* builds/unix/configure.raw (version_info): Set to 18:6:12.
	* CMakeLists.txt (VERSION_MINOR): Set to 7.
	(VERSION_PATCH): Set to 0.

	* docs/CHANGES: Updated.

2016-09-08  Werner Lemberg  <[email protected]>

	* src/truetype/ttinterp.c: Include `ttgxvar.h'.

	This fixes the `multi' build.

2016-09-08  Werner Lemberg  <[email protected]>

	[autofit] Another improvement to Armenian support.

	Suggested by Hrant H Papazian <[email protected]>.

	* src/autofit/afscript.h: Use better suited characters to derive
	default stem widths.

2016-09-07  Alexei Podtelezhnikov  <[email protected]>

	* src/smooth/ftgrays.c (gray_hline): Micro-optimize.

2016-09-06  Alexei Podtelezhnikov  <[email protected]>

	[smooth] Operate in absolute bitmap coordinates.

	Simpler bitmap addressing improves performance by 1.5%.

	* src/smooth/ftgrays.c (gray_TWorker): Remove count fields.
	(gray_dump_cells, gray_find_cell, gray_set_cell, gray_hline,
	gray_sweep, gray_convert_glyph, gray_raster_render): Updated.

2016-09-06  Alexei Podtelezhnikov  <[email protected]>

	[smooth] Improve contour start (take 2).

	* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
	instead of...
	(gray_start_cell): ... this function, which is removed.
	(gray_convert_glyph): Make initial y-coordinate invalid.

2016-09-06  Werner Lemberg  <[email protected]>

	[type1] MM fonts support exactly zero named instances (#48748).

	* src/type1/t1load.c (T1_Get_MM_Var): Set `num_namedstyles' to zero.

2016-09-06  Jonathan Kew  <[email protected]>

	[cff] Fix uninitialized memory.

	Problem reported as

	  https://bugzilla.mozilla.org/show_bug.cgi?id=1270288

	* src/cff/cf2interp.c (cf2_interpT2CharString): Initialize `storage'
	array to handle a `get' opcode without a previous `put'.

2016-09-05  Alexei Podtelezhnikov  <[email protected]>

	* src/smooth/ftgrays.c (gray_move_to, gray_start_cell): Revert.

2016-09-05  Alexei Podtelezhnikov  <[email protected]>

	[smooth] Improve contour start.

	* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
	instead of...
	(gray_start_cell): ... this function, which is removed.

2016-09-05  Werner Lemberg  <[email protected]>

	[cff] Fix memory initialization.

	* src/cff/cf2stack.c (cf2_stack_init): Use `FT_NEW'.  The `Q'
	variants of FreeType's memory allocation macros don't do zeroing.

2016-09-05  Werner Lemberg  <[email protected]>

	[ftrandom] Minor improvements.

	* src/tools/ftrandom/ftrandom.c (_XOPEN_SOURCE): New macro, set to
	500.

	* src/tools/ftrandom/Makefile (CFLAGS): Split off include
	directories to ...
	(INCLUDES): ... this new variable.
	(LDFLAGS): New variable.
	(ftrandom.o, ftrandom): Updated.

2016-09-05  Werner Lemberg  <[email protected]>

	[autofit] Improve Armenian support.

	Thanks to Hrant H Papazian <[email protected]> for help.

	* src/autofit/afblue.dat (AF_BLUE_STRING_ARMENIAN_*): Improve
	selection of characters.

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

2016-09-04  Werner Lemberg  <[email protected]>

	[ftrandom] Improve Makefile.

	It now supports both a normal build (`./configure && make') and a
	development build (`make devel').

	* src/tools/ftrandom/Makefile (VPATH): Set it so that
	`libfreetype.a' gets searched in both `objs' (for the development
	build) and `objs/.libs' (for a normal build which uses libtool).
	(LIBS): Add missing libraries.
	(ftrandom.o): New rule.
	(ftrandom): Use automatic variables.

2016-09-03  Werner Lemberg  <[email protected]>

	[truetype] More fixes for handling of GX deltas.

	Problems reported by Bob Taylor <[email protected]>.

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Fix rough
	sanity test for glyph variation array header size.
	Always set stream position before reading packed x and y deltas.
	Fix thinko w.r.t. `localpoints' array.

2016-09-03  Werner Lemberg  <[email protected]>

	[ftrandom] Various fixes.

	* src/tools/ftrandom/ftrandom.c (GOOD_FONTS_DIR): Provide better
	default.
	(error_fraction): Make it of type `double' to work as advertized –
	this was completely broken.
	Update all related code.
	(error_count, fcnt): Make it unsigned to fix compiler warnings.
	Update all related code.
	(fontlist): Change `len' member to `long' to fix compiler warnings.
	(FT_MoveTo, FT_LineTo, FT_ConicTo, FT_CubicTo, abort_test): Tag
	unused variables.
	(TestFace, FindFonts, copyfont, do_test): Fix compiler warnings.
	(ExecuteTest): Ditto.
	Call `FT_Done_FreeType'.
	(getErrorCnt): Replace `ceil' with an ordinary cast to `unsigned
	int'.
	(usage): Improve output.
	(main): Fix compiler warnings.

	* src/tools/ftrandom/README: Updated.

2016-09-03  Werner Lemberg  <[email protected]>

	[base] Avoid negative bitmap strike dimensions (#48985).

	* src/base/ftobjs.c (FT_Open_Face): Check whether negation was
	actually successful.  For example, this can fail for value
	-32768 if the type is `signed short'.  If there are problems,
	disable the strike.

2016-09-03  Werner Lemberg  <[email protected]>

	[cff] Avoid null pointer passed to FT_MEM_COPY (#48984).

	* src/cff/cffload.c (cff_index_get_name): Check `byte_len'.

2016-09-02  Werner Lemberg  <[email protected]>

	[unix] Enable 64bit support in file system access (#48962).

	* builds/unix/configure.raw: Call `AC_SYS_LARGEFILE'.

2016-09-02  Werner Lemberg  <[email protected]>

	[sfnt] Avoid left shift of negative value (#48980).

	* src/sfnt/ttsbit.c (tt_sbit_decoder_load_bit_aligned): Use unsigned
	constant.

2016-09-02  Werner Lemberg  <[email protected]>

	* src/smooth/ftgrays.c (gray_hline): Fix clang compiler warnings.

2016-09-02  Werner Lemberg  <[email protected]>

	Some preparations for the next release.

	* include/freetype/config/ftoption.h
	(TT_CONFIG_OPTION_SUBPIXEL_HINTING): Enable.

	* docs/CHANGES: Updated.

2016-09-01  Alexei Podtelezhnikov  <[email protected]>

	[smooth] Simplify span rendering more.

	It turns out that there is significant cost associated with `FT_Span'
	creation and calls to `gray_render_span' because it happens so
	frequently. This removes these steps from our internal use but leaves
	it alone for `FT_RASTER_FLAG_DIRECT" to preserve API. The speed gain
	is about 5%.

	* src/smooth/ftgrays.c (gray_render_span): Removed. The code is
	migrated to...
	(gray_hline): ... here.

2016-08-30  Alexei Podtelezhnikov  <[email protected]>

	[smooth] Streamline pixmap drawing a bit more.

	Zero coverage is unlikely (1 out of 256) to warrant checking. This
	gives 0.5% speed improvement in rendering simple glyphs.

	* src/smooth/ftgrays.c (gray_hline, gray_render_span): Remove checks.

2016-08-29  Alexei Podtelezhnikov  <[email protected]>

	[smooth] Streamline pixmap drawing.

	This gives 2% speed improvement in rendering simple glyphs.

	* src/smooth/ftgrays.c (TPixmap): Reduced pixmap descriptor with a
	pointer to its bottom-left and pitch to be used in...
	(gray_TWorker): ... here.
	(gray_render_span): Move pixmap flow check from here...
	(gray_raster_render): .. to here.

2016-08-27  Alexei Podtelezhnikov  <[email protected]>

	[smooth] Reduce stack of band boundaries.

	* src/smooth/ftgrays.c (gray_TBand): Removed.
	(gray_convert_glyph): Updated to stack band boundaries concisely.

2016-08-26  Werner Lemberg  <[email protected]>

	* src/cid/cidload.c (cid_face_open): Improve handling of `SDBytes'.

2016-08-26  Werner Lemberg  <[email protected]>

	[cid] Fix commit from 2016-05-16.

	* src/cid/cidparse.c (cid_parser_new): Fix off-by-one errors.

2016-08-26  Werner Lemberg  <[email protected]>

	[sfnt] Cache offset and size to bitmap data table.

	This commit avoids `EBDT' and friends being looked up again and
	again while loading a single embedded bitmap.

	* include/freetype/internal/tttypes.h (TT_FaceRec)
	[TT_CONFIG_OPTION_EMBEDDED_BITMAPS]: New fields `ebdt_start' and
	`ebdt_size'.

	* src/sfnt/ttsbit.c (tt_sbit_decoder_init): Move table lookup to ...
	(tt_face_load_sbit): ... this function; also store the table size
	and offset.

2016-08-26  Alexei Podtelezhnikov  <[email protected]>

	* src/smooth/ftgrays.c (gray_raster_render): Minor tweaks.

2016-08-26  Werner Lemberg  <[email protected]>

	[type1] Fix heap buffer overflow.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36

	* src/type1/t1load.c (parse_charstrings): Reject fonts that don't
	contain glyph names.

2016-08-25  Werner Lemberg  <[email protected]>

	[sfnt] Fix previous commit (#48901).

	* src/sfnt/ttcmap.c (tt_cmap4_char_map_binary): Thinkos.

2016-08-25  Werner Lemberg  <[email protected]>

	[sfnt] Speed up handling of invalid format 4 cmaps.

	* src/sfnt/ttcmap.c (tt_cmap4_next, tt_cmap4_char_map_binary): Add
	tests for `num_glyph' from `tt_cmap4_char_map_linear'.

2016-08-25  Werner Lemberg  <[email protected]>

	* include/freetype/internal/ftdriver.h: Remove unused typedefs.

2016-08-22  Alexei Podtelezhnikov  <[email protected]>

	[smooth] Simplify span rendering.

	This removes unnecessary complexity of span merging and buffering.
	Instead, the spans are rendered as they come, speeding up the
	rendering by about 5% as a result.

	* src/smooth/ftgrays.c [FT_MAX_GRAY_SPANS]: Macro removed.
	(gray_TWorker): Remove span buffer and related fields.
	(gray_sweep, gray_hline): Updated.

	* include/freetype/ftimage.h: Remove documentation note about
	`FT_MAX_GRAY_SPANS', which was never in `ftoption.h' and is now gone.

2016-08-16  Werner Lemberg  <[email protected]>

	[truetype] Fix `MPS' instruction.

	According to Greg Hitchcock, MPS in DWrite really returns the point
	size.

	* src/truetype/ttobjs.h (TT_SizeRec): Add `point_size' member.

	* src/truetype/ttdriver.c (tt_size_request): Set `point_size'.

	* src/truetype/ttinterp.h (TT_ExecContextRec): Add `pointSize'
	member.

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

2016-08-16  Werner Lemberg  <[email protected]>

	[lzw] Optimize last commit.

	* src/lzw/ftzopen.c (ft_lzwstate_get_code): Move check into
	conditional clause.

2016-08-16  Werner Lemberg  <[email protected]>

	[lzw] Avoid invalid left shift.

	Reported as

	  https://bugzilla.mozilla.org/show_bug.cgi?id=1295366

	* src/lzw/ftzopen.c (ft_lzwstate_get_code): Limit `num_bits'.

2016-08-16  Werner Lemberg  <[email protected]>

	[lzw] Avoid buffer overrun.

	Reported as

	  https://bugzilla.mozilla.org/show_bug.cgi?id=1273283

	* src/lzw/ftzopen.c (ft_lzwstate_refill): Ensure `buf_size' doesn't
	underflow.

2016-08-16  Werner Lemberg  <[email protected]>

	[truetype] Fix compiler warning.

	* src/truetype/ttgload.c (load_truetype_glyph): Add cast.

2016-08-13  Werner Lemberg  <[email protected]>

	[winfonts] Avoid zero bitmap width and height.

	Reported as

	  https://bugzilla.mozilla.org/show_bug.cgi?id=1272173

	* src/winfonts/winfnt.c (FNT_Face_Init): Check zero pixel height.
	(FNT_Load_Glyph): Check for zero pitch.

2016-08-11  Alexei Podtelezhnikov  <[email protected]>

	* src/truetype/ttinterp.c (Pop_Push_Count): Revert changes.

2016-08-11  Alexei Podtelezhnikov  <[email protected]>

	* src/truetype/ttinterp.c (TT_RunIns): Minor and formatting.

2016-08-11  Alexei Podtelezhnikov  <[email protected]>

	* src/truetype/ttinterp.c (Pop_Push_Count): Fix some entries.

2016-08-10  Peter Klotz  <[email protected]>

	* src/smooth/ftgrays.c (gray_hline): Fix uninitialized access.

2016-08-10  Werner Lemberg  <[email protected]>

	[sfnt] Use correct type for `italicAngle' field (#48732).

	* src/sfnt/ttload.c (tt_face_load_post): Fix types.

2016-08-06  Jon Spencer  <[email protected]>

	[sfnt] Fix `FT_Get_Advance' for bitmap strikes.

	`FT_Get_Advance' returns 0 for bitmap fonts.  It first gets the
	advance value from the font table and then scales it by the
	`font->size->metrics->x_scale' field.  But `FT_Select_Size' doesn't
	set that value for bitmap fonts and the advance gets scaled to zero.

	Taken from

	  https://github.com/behdad/harfbuzz/issues/252

	* src/sfnt/ttsbit.c (tt_face_load_strike_metrics)
	<TT_SBIT_TABLE_TYPE_EBLC>: Set scale values.

2016-08-06  Behdad Esfahbod  <[email protected]>

	[truetype] Fix GX variation handling of composites.

	* src/truetype/ttgload.c (load_truetype_glyph)
	[TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Check `ARGS_ARE_XY_VALUES' flag.

2016-08-05  Alexei Podtelezhnikov  <[email protected]>

	[smooth] Minor refactoring.

	* src/smooth/ftgrays.c (gray_render_scanline, gray_render_line):
	Updated.

2016-07-29  Werner Lemberg  <[email protected]>

	[sfnt, truetype] Don't abort on invalid `maxComponentDepth'.

	Since 2016-05-16 we detect infinite recursion directly.

	* src/sfnt/ttload.c (tt_face_load_maxp): Don't adjust
	`maxComponentDepth'.
	* src/truetype/ttgload.c (load_truetype_glyph): Don't abort if
	`maxComponentDepth' is not valid.  Instead, simply adjust its value
	and emit a tracing message.

2016-07-26  Werner Lemberg  <[email protected]>

	* src/autofit/aflatin.c (af_latin_metrics_scale_dim): Minor.

	No functional change.

2016-07-22  Hin-Tak Leung  <[email protected]>

	[truetype] Record the end of IDEFs.

	To match the logic in FDEF.  The value of the end is only used for
	bound-checking in `Ins_JMPR', so it may not have been obvious that
	it was not recorded.  Tested (as part of Font Validator 2.0) all the
	fonts on Fedora and did not see any change.

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

2016-07-19  Werner Lemberg  <[email protected]>

	[truetype] Sanitizer fix, second try.

	* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Fix boundary
	tests and use only one slot more.

2016-07-19  Werner Lemberg  <[email protected]>

	[truetype] Sanitizer fix.

	* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Increase array
	to fix nested loops.

2016-07-18  Werner Lemberg  <[email protected]>

	[truetype] Make GETDATA work only for GX fonts.

	* src/truetype/ttinterp.c (opcode_name): Updated.
	(Ins_GETDATA): Only define for `TT_CONFIG_OPTION_GX_VAR_SUPPORT'.
	(TT_RunIns): Updated.

2016-07-17  Werner Lemberg  <[email protected]>

	[truetype] Add support for Apple's

	  GETDATA[], opcode 0x92

	bytecode instruction.  It always returns 17, and we have absolutely
	no idea what it is good for...

	* src/truetype/ttinterp.c (Pop_Push_Count, opcode_name): Updated.
	(Ins_GETDATA): New function.
	(TT_RunIns): Add it.

2016-07-16  Werner Lemberg  <[email protected]>

	[truetype] Add bytecode support for GX variation fonts.

	This commit implements undocumented (but confirmed) stuff from
	Apple's old bytecode engine.

	  GETVARIATION[], opcode 0x91
	    This opcode pushes normalized variation coordinates for all axes
	    onto the stack (in 2.14 format).  Coordinate of first axis gets
	    pushed first.

	  GETINFO[], selector bit 3
	    If GX variation support is enabled, bit 10 of the result is set
	    to 1.

	* src/truetype/ttinterp.c: Include FT_MULTIPLE_MASTERS_H.
	(opcode_name) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Updated.
	(Ins_GETINFO) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Handle selector
	bit 3, checking support for variation glyph hinting.
	(Ins_GETVARIATION) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New function
	to implement opcode 0x91.
	(TT_RunIns) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Handle opcode 0x91.

2016-07-16  Werner Lemberg  <[email protected]>

	[truetype] Fix GETINFO bytecode instruction.

	* src/truetype/ttinterp.c (Ins_GETINFO): Fix return value for
	stretching information.

2016-07-16  Behdad Esfahbod  <[email protected]>

	[truetype] Make all glyphs in `Zycon' GX font work.

	* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Fix boundary
	tests.

2016-07-16  Werner Lemberg  <[email protected]>

	[truetype] Fix GX delta tracing.

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Trace
	relative point movements.

2016-07-16  Behdad Esfahbod  <[email protected]>

	[truetype] More fixes for GX.

	This finally fixes the rendering of the cyclist and the lizard in
	the `Zycon' font.

	* src/truetype/ttgxvar.c (ft_var_readpackedpoints): `first' point
	index is always cumulative.

	(tt_handle_deltas): Rename to...
	(tt_interpolate_deltas): ... This.
	Add new parameter for output point array.
	Update caller.

	(TT_Vary_Apply_Glyph_Deltas): Add `points_out' array; it now holds
	the intermediate results of `tt_interpolate_deltas' that are to be
	added to `outline->points'.

2016-07-15  Werner Lemberg  <[email protected]>

	* src/autofit/aflatin.c (af_latin_hints_compute_segments): Thinko.

	`max_pos' is always larger than `min_pos' so `FT_ABS' is not needed.

	Reported by Alexei.

2016-07-16  Nikolaus Waxweiler  <[email protected]>

	* src/truetype/ttinterp.c (Ins_MIRP): Fix copy-and-paste error.

	Problem reported by Hin-Tak Leung.

2016-07-15  Werner Lemberg  <[email protected]>

	[autofit] Update and improve segment and edge tracing.

	* src/autofit/afhints.c (af_glyph_hints_dump_segments): Trace
	`delta' also.
	Don't show first point of segment as a replacement for `pos'; this
	is (a) misleading, since the difference to `pos' can be almost
	arbitrarily large in corner cases, and (b) it is better to have all
	segment data in font units instead of a single value given in output
	space coordinates.
	Improve layout.
	(af_glyph_hints_dump_edges): Show px->units and units->px conversion
	values for convenience.
	Improve layout.

2016-07-15  Werner Lemberg  <[email protected]>

	[autofit] For edges, reject segments wider than 1px (#41334).

	* src/autofit/afhints.h (AF_SegmentRec): New member `delta'.

	* src/autofit/aflatin.c (af_latin_hints_compute_segments): Compute
	`delta'.
	(af_latin_hints_compute_edges): Reject segments with a delta larger
	than 0.5px.

2016-07-14  Werner Lemberg  <[email protected]>

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

2016-07-14  Werner Lemberg  <[email protected]>

	[sfnt] Fix `face_index' value in `FT_Face' for named instances.

	* src/sfnt/sfobjs.c (sfnt_init_face): Don't strip off higher 16bits.

2016-07-14  Werner Lemberg  <[email protected]>

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Fix tracing.

2016-07-14  Behdad Esfahbod  <[email protected]>

	[truetype] Fix gxvar delta interpolation.

	The coordinates of the base font should be used for interpolation
	purposes, NOT the current points (i.e., the result of accumulation
	of previous deltas).

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Initialize
	`points_org' before looping over all tuples.


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Copyright 2016-2017 by
David Turner, Robert Wilhelm, and Werner Lemberg.

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