Commit Graph

4234 Commits

Author SHA1 Message Date
Werner Lemberg f837a50ec3 [pcf] Introduce a driver structure.
To be filled later on with something useful.

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

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

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

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

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

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

(GX_HVarTable): Updated.

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

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

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

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

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

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

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

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

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

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

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

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

* src/psnames/pstables.h: Regenerated.

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

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

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

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

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

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

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

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

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

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

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

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

Reported as

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

and

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

as references.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

You should ignore whitespace while inspecting this commit.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Activation of the code follows in another commit.

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

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

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

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

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

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

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

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

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

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

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

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

Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

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

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

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

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

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

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

Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

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

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

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

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

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

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

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

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

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

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

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

* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.
* src/type1/t1driver.c (t1_service_multi_masters): Updated.
2016-12-11 09:16:52 +01:00
Werner Lemberg 27bdb36cbe [truetype, type1] Add `done_blend' to MM service.
For internal use; we want to share code between the forthcoming CFF2
support and TrueType.

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

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

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

* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.
* src/type1/t1driver.c (t1_service_multi_masters): Updated.
2016-12-10 09:56:03 +01:00
Werner Lemberg 3205a44d01 [sfnt] Revert change from 2016-12-08.
I missed the functionality of `ft_module_get_service', which makes
the change unnecessary.
2016-12-09 06:55:34 +01:00
Werner Lemberg 4191b7761b Add framework to support services with 8 functions.
We will need this for CFF variation font support.

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

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

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

* include/freetype/ftmm.h: Declare.

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

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

* src/truetype/ttdriver.c: Updated.

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

* src/type1/t1driver.c: Updated.

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

Reported as

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

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

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

  #include <zlib.h>

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

  #include "zconf.h"

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

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

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

No functional change.

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

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

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

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

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

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

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

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

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

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

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

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

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

* src/truetype/ttgxvar.c (TT_Set_Var_Design): Clamp design coordinates
outside of the allowed range to always stay within the range instead
of producing an error.
2016-11-03 06:41:00 +01:00
Werner Lemberg 328d68449d [truetype] Remove clang warnings.
* src/truetype/ttinterp.h (TT_ExecContextRec): Using `FT_ULong' for
loop counter handling.

* src/truetype/ttinterp.c: Updated.
(Ins_SCANTYPE): Use signed constant.
(TT_RunIns): Ensure `num_twilight_points' is 16bit.
2016-10-29 00:18:56 +02:00
Werner Lemberg ddf3872699 [truetype] Fix commit from 2014-11-24.
Problem reported by Hin-Tak Leung  <htl10@users.sourceforge.net>.

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

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

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

* src/truetype/ttdriver.c: Updated.

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

* src/type1/t1driver.c: Updated.

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

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

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=81
2016-10-26 08:10:59 +02:00
Alexei Podtelezhnikov c5f1bc4b36 [cff] Correct cmap format reporting (#24819).
* src/cff/cffdrivr.c (cff_get_cmap_info): Throw an error on synthetic
charmap instead of guessing its format and language.
2016-10-25 22:31:42 -04:00
Werner Lemberg 5081674c5f [truetype] Fix SCANTYPE instruction (#49394).
* src/truetype/ttinterp.c (Ins_SCANTYPE): Only use lower 16bits.
2016-10-22 19:16:08 +02:00
Werner Lemberg 577414030a [sfnt] Improve handling of invalid post 2.5 tables [#49393].
* src/sfnt/ttpost.c (load_format_25): We need at least a single
table entry.
2016-10-22 18:34:48 +02:00
Werner Lemberg 7eeaf986b5 [truetype] Fix handling of `cvar' table data.
Reported as

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

* src/smooth/ftgrays.c (gray_set_cell): Remove check for a new cell.
(gray_convert_glyph): Remove initialization introduced by 44b172e88.
2016-09-11 16:00:52 -04:00
Werner Lemberg e421a0bffc [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.
2016-09-10 08:02:30 +02:00
Werner Lemberg deb261556a [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 22:13:33 +02:00
Werner Lemberg d609b7c158 [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'.
2016-09-09 22:11:07 +02:00
Werner Lemberg d2d5968aed * 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 09:04:32 +02:00
Werner Lemberg b1e7b68efe * src/truetype/ttinterp.c: Include `ttgxvar.h'.
This fixes the `multi' build.
2016-09-08 08:56:34 +02:00
Werner Lemberg 8160b20195 Split off ChangeLog.26. 2016-09-08 08:42:10 +02:00
Werner Lemberg 9749f269e2 [autofit] Another improvement to Armenian support.
Suggested by Hrant H Papazian <hpapazian@gmail.com>.

* src/autofit/afscript.h: Use better suited characters to derive
default stem widths.
2016-09-08 07:51:03 +02:00
Alexei Podtelezhnikov a0b92bcb47 * src/smooth/ftgrays.c (gray_hline): Microptimize. 2016-09-07 23:19:57 -04:00
Alexei Podtelezhnikov 9d0a3bd848 [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 23:59:33 -04:00
Alexei Podtelezhnikov 44b172e883 [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 23:24:17 -04:00
Werner Lemberg ebbb8b2e19 [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 16:28:57 +02:00
Jonathan Kew a15133e6ef [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'.
2016-09-06 06:33:36 +02:00
Alexei Podtelezhnikov 9773d5f721 * src/smooth/ftgrays.c (gray_move_to, gray_start_cell): Revert. 2016-09-05 23:33:35 -04:00
Alexei Podtelezhnikov 7effc279b0 [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 21:58:56 -04:00
Werner Lemberg 3ebfe3c545 [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 10:55:07 +02:00
Werner Lemberg 1c8bb63299 [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 08:13:42 +02:00
Werner Lemberg c9adf1a14d [autofit] Improve Armenian support.
Thanks to Hrant H Papazian <hpapazian@gmail.com> for help.

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

* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
2016-09-05 07:32:37 +02:00
Werner Lemberg 4b28f6ac42 [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.
2016-09-04 19:05:45 +02:00
Werner Lemberg 4e659d7ead [truetype] More fixes for handling of GX deltas.
Problems reported by Bob Taylor <Bob.Taylor@monotype.com>.

* 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 18:14:00 +02:00
Werner Lemberg ca8e98d94a [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 13:06:16 +02:00
Werner Lemberg b98dfda392 [base] Avoid negative bitmap stroke 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 stroke.
2016-09-03 08:20:31 +02:00
Werner Lemberg f0fa7a67bf [cff] Avoid null pointer passed to FT_MEM_COPY (#48984).
* src/cff/cffload.c (cff_index_get_name): Check `byte_len'.
2016-09-03 06:33:36 +02:00
Werner Lemberg d87bb9160a [unix] Enable 64bit support in file system access (#48962).
* builds/unix/configure.raw: Call `AC_SYS_LARGEFILE'.
2016-09-02 23:56:27 +02:00
Werner Lemberg d8ef726611 [sfnt] Avoid left shift of negative value (#48980).
* src/sfnt/ttsbit.c (tt_sbit_decoder_load_bit_aligned): Use unsigned
constant.
2016-09-02 23:27:50 +02:00
Werner Lemberg 16583ccde9 * src/smooth/ftgrays.c (gray_hline): Fix clang compiler warnings. 2016-09-02 22:45:14 +02:00
Werner Lemberg 7a13dc008b Some preparations for the next release.
* include/freetype/config/ftoption.h
(TT_CONFIG_OPTION_SUBPIXEL_HINTING): Enable.

* docs/CHANGES: Updated.
2016-09-02 08:24:01 +02:00
Alexei Podtelezhnikov 11d3336af3 [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 happerns 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.
2016-09-01 22:56:24 -04:00
Alexei Podtelezhnikov f44ddfda45 [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 dendering simple glyphs.

* src/smooth/ftgrays.c (gray_hline, gray_render_span): Remove checks.
2016-08-30 23:21:23 -04:00
Alexei Podtelezhnikov e73055c791 [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.
2016-08-29 23:15:35 -04:00
Alexei Podtelezhnikov 4d3f7ca8ce [smooth] Reduce stack of band boundaries.
* src/smooth/ftgrays.c (gray_TBand): Removed.
(gray_convert_glyph): Updated to stack band boundaries concisely.
2016-08-27 23:25:54 -04:00
Werner Lemberg 57aa83911a * src/cid/cidload.c (cid_face_open): Improve handling of `SDBytes'. 2016-08-26 11:59:50 +02:00
Werner Lemberg 3c61a2f51d [cid] Fix commit from 2016-05-16.
* src/cid/cidparse.c (cid_parser_new): Fix off-by-one errors.
2016-08-26 11:50:09 +02:00
Werner Lemberg f3e71bab9e [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 10:31:30 +02:00
Alexei Podtelezhnikov 9a444f0547 * src/smooth/ftgrays.c (gray_raster_render): Minor tweaks. 2016-08-25 22:36:01 -04:00
Werner Lemberg a660e3de42 [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.
2016-08-26 00:23:27 +02:00
Werner Lemberg 69ce97391c [sfnt] Fix previous commit (#48901).
* src/sfnt/ttcmap.c (tt_cmap4_char_map_binary): Thinkos.
2016-08-25 19:49:52 +02:00
Werner Lemberg acd1879897 [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 17:12:46 +02:00
Werner Lemberg 327f2e3e55 * include/freetype/internal/ftdriver.h: Remove unused typedefs. 2016-08-25 12:46:08 +02:00
Alexei Podtelezhnikov cb4388783c [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% percents 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.
2016-08-22 23:06:45 -04:00
Werner Lemberg a4c2a31138 [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.
2016-08-22 19:32:34 +02:00
Werner Lemberg 8521ad99b0 [lzw] Optimize last commit.
* src/lzw/ftzopen.c (ft_lzwstate_get_code): Move check into
conditional clause.
2016-08-16 13:44:38 +02:00
Werner Lemberg 6df68335f1 minor. 2016-08-16 09:50:07 +02:00
Werner Lemberg 548f68d805 [lzw] Avoid invalid left shift.
* src/lzw/ftzopen.c (ft_lzwstate_get_code): Limit `num_bits'.
2016-08-16 09:46:40 +02:00
Werner Lemberg 8d7b9198e3 [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 08:07:58 +02:00
Werner Lemberg cf4224adb9 [truetype] Fix compiler warning.
* src/truetype/ttgload.c (load_truetype_glyph): Add cast.
2016-08-16 06:44:23 +02:00
Werner Lemberg 248f5629d8 [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.
2016-08-13 06:53:53 +02:00
Alexei Podtelezhnikov 125f2b63a5 * src/truetype/ttinterp.c (Pop_Push_Count): Revert changes. 2016-08-11 23:40:05 -04:00
Alexei Podtelezhnikov 49d474f6f6 * src/truetype/ttinterp.c (TT_RunIns): Minor and formatting. 2016-08-11 23:03:09 -04:00
Alexei Podtelezhnikov dce554b1bd * src/truetype/ttinterp.c (Pop_Push_Count): Fix some entries. 2016-08-11 07:29:19 +02:00
Peter Klotz 3b37bfc4b5 * src/smooth/ftgrays.c (gray_hline): Fix uninitialized access. 2016-08-10 22:38:08 -04:00
Werner Lemberg 5224aae8bb [sfnt] Use correct type for `italicAngle' field (#48732).
* src/sfnt/ttload.c (tt_face_load_post): Fix types.
2016-08-10 19:47:29 +02:00
Werner Lemberg 53059f92d6 [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.
2016-08-07 09:01:33 +02:00
Behdad Esfahbod 8183eeb18d [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.
2016-08-06 23:12:55 +02:00
Alexei Podtelezhnikov 97718f3c91 [smooth] Minor refactoring.
* src/smooth/ftgrays.c (gray_render_scanline, gray_render_line):
Updated.
2016-08-05 23:36:16 -04:00
Werner Lemberg fae4ec0525 [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.
2016-07-29 06:43:32 +02:00
Werner Lemberg d9c7f5aa6e * src/autofit/aflatin.c (af_latin_metrics_scale_dim): Minor.
No functional change.
2016-07-26 20:20:27 +02:00
Hin-Tak Leung 3a528bbe5a [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.
2016-07-22 06:59:36 +02:00
Werner Lemberg 7f63105c07 [truetype] Sanitizer fix, second try.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Fix boundary
tests and use only one slot more.
2016-07-19 21:35:58 +02:00
Werner Lemberg e69f34b1e2 [truetype] Sanitizer fix.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Increase array
to fix nested loops.
2016-07-19 07:06:19 +02:00
Werner Lemberg a3b70d76ba [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.
2016-07-18 06:23:36 +02:00
Werner Lemberg 8c93013ca3 [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.
2016-07-17 22:40:31 +02:00
Werner Lemberg e084360961 [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 18:46:28 +02:00
Werner Lemberg 32a320625e [truetype] Fix GETINFO bytecode instruction.
* src/truetype/ttinterp.c (Ins_GETINFO): Fix return value for
stretching information.
2016-07-16 16:39:26 +02:00
Behdad Esfahbod 69446ddcce [truetype] Make all glyphs in `Zycon' GX font work.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Fix boundary
tests.
2016-07-16 10:52:38 +02:00
Werner Lemberg a3b61253a7 [truetype] Fix GX delta tracing.
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Trace
relative point movements.
2016-07-16 08:16:16 +02:00
Werner Lemberg f147fb2881 [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'.
2016-07-16 07:06:21 +02:00
Werner Lemberg aafff57428 * 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 06:41:39 +02:00
Nikolaus Waxweiler 86eb43a994 * src/truetype/ttinterp.c (Ins_MIRP): Fix copy-and-paste error.
Problem reported by Hin-Tak Leung.
2016-07-16 06:37:57 +02:00
Werner Lemberg 1831e6f068 [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 10:35:32 +02:00
Werner Lemberg 894c0228ca [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.
2016-07-15 10:23:11 +02:00
Werner Lemberg ff655437e3 * include/freetype/freetype.h (FT_IS_NAMED_INSTANCE): New macro. 2016-07-14 15:01:55 +02:00
Werner Lemberg ee3f36f6b3 [sfnt] Fix `face_index' value in `FT_Face' for named instances.
* src/sfnt/sfobjc.s (sfnt_init_face): Don't strip off higher 16bits.
2016-07-14 10:25:20 +02:00
Werner Lemberg 631e218147 * src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Fix tracing. 2016-07-14 06:25:05 +02:00
Behdad Esfahbod 0f9ddf20c8 [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.
2016-07-14 06:08:39 +02:00
Werner Lemberg 4261103e35 Minor. 2016-07-14 06:03:52 +02:00
Werner Lemberg 17fa9f714f Merge branch '2.6.5'. 2016-07-12 08:06:23 +02:00
Werner Lemberg f9b1871ded * Version 2.6.5 released.
=========================

Tag sources with `VER-2-6-5'.

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

* docs/VERSION.TXT: Add entry for version 2.6.5.

* 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/2.6.4/2.6.5/, s/264/265/.

* include/freetype/freetype.h (FREETYPE_PATCH): Set to 5.

* builds/unix/configure.raw (version_info): Set to 18:5:12.
* CMakeLists.txt (VERSION_PATCH): Set to 5.

* docs/CHANGES: Updated.
2016-07-12 06:18:49 +02:00
Werner Lemberg 605946af6d Conditionally compile environment support.
* include/freetype/internal/ftobjs.h, src/autofit/afmodule.c,
src/base/ftobjs.c, src/cff/cffdrivr.c, src/truetype/ttdriver.c:
Decorate with `FT_CONFIG_OPTION_ENVIRONMENT_PROPERTIES' where
necessary.
2016-07-11 16:14:36 +02:00
Werner Lemberg 8f8ae8c52d Handle properties in `FREETYPE_PROPERTIES' environment variable.
This commit covers the most important one.

* src/autofit/afmodule.c (af_property_set): Handle `warping',
`darkening-parameters', and `no-stem-darkening'.

* src/cff/cffdrivr.c (cff_property_set): Handle
`darkening-parameters', `hinting-engine', and `no-stem-darkening'.

* src/truetype/ttdriver.c (tt_property_set): Handle
`interpreter-version'.
2016-07-11 15:11:38 +02:00
Werner Lemberg c3e83b4662 Replace calls to `atol' with `strtol'.
We later on need strtol's `endptr' feature.

* include/freetype/config/ftstdlib.h (ft_atol): Replace with...
(ft_strtol): ... this.

* src/base/ftdbgmem.c (ft_mem_debug_init): Updated.
* src/cid/cidparse.c (cid_parser_new): Ditto.
* src/type42/t42drivr.c (t42_get_name_index), src/type42/t42objs.c
(T42_GlyphSlot_Load): Ditto.
2016-07-11 05:56:26 +02:00
Werner Lemberg 84d3df7501 Implement handling of `FREETYPE_PROPERTIES' environment variable.
Recognizing properties follows in another commit.

* devel/ftoption.h, include/freetype/config/ftoption.h
(FT_CONFIG_OPTION_ENVIRONMENT_PROPERTIES): New macro.

* include/freetype/config/ftstdlib.h (ft_getenv): New macro.

* src/base/ftinit.c (ft_set_default_properties): New function to
parse `FREETYPE_PROPERTIES' and calling `ft_property_string_set'.
(FT_Init_FreeType): Updated.
2016-07-11 00:12:11 +02:00
Werner Lemberg c3beb30a21 Add function `ft_property_string_set'.
This is a preparation for handling an `FREETYPE_PROPERTIES'
environment variable to control (some) driver properties.

No change in functionality.

* src/base/ftobjs.c (ft_property_do): Add `value_is_string'
parameter.
(ft_property_string_set): New function.
(FT_Property_Set, FT_Property_Get): Updated.

* include/freetype/internal/ftobjs.h: Updated.

* include/freetype/internal/services/svprop.h
(FT_Properties_SetFunc): Add `value_is_string' parameter.

* src/autofit/afmodule.c (af_property_set), src/cff/cffdrivr.c
(cff_property_set), src/truetype/ttdriver.c (tt_property_set):
Updated, emitting an error currently if `value_is_string' is set.
2016-07-10 07:11:45 +02:00
suzuki toshiya 83c877f11c [mac] Fix ftexport.sym target in Jamfile.
* Jamfile: Update the directories of the header files scanned for
ftexport.sym.  They were incorrect since the migration of the
header files, on 2015-06-22.  Either inexisting include/cache
(removed on 2006-03-20) is not needed to be listed explicitly.
Now ftmac.h is scanned only in the case of Mac OS & Mac OS X.
2016-07-09 13:45:50 +09:00
Werner Lemberg 971f10b63a Formatting. 2016-07-08 06:59:31 +02:00
Werner Lemberg 109d1662d4 Revert "Formatting."
This reverts commit a0f3a1f25a.
2016-07-08 06:58:46 +02:00
Werner Lemberg a0f3a1f25a Formatting. 2016-07-08 06:53:46 +02:00
Alexei Podtelezhnikov 4a2f8f1faf [smooth] Sub-banding protocol revision.
Rasterization sub-banding is utilized at large sizes while using
rather small fixed memory pool. Indeed it is possible to make an
educated guess how much memory is necessary at a given size for a
given glyph. It turns out that, for large majority of European glyphs,
you should store about 8 times more boundary pixels than their height.
Or, vice versa, if your memory pool can hold 800 pixels the band
height should be 100 and you should sub-band anything larger than
that. Should you still run out of memory, FreeType bisects the band
but you have wasted some time. This is what has been implemented in
FreeType since the beginning.

It was overlooked, however, that the top band could grow to twice the
default band size leading to unnecessary memory overflows there. This
commit fixes that. Now the bands are distributed more evenly and
cannot exceed the default size.

Now the magic number 8 is really suitable for rather simple European
scripts. For complex Chinese logograms the magic number should be 13
but that is subject for another day.

* src/smooth/ftgrays.c (gray_convert_glyph): Revise sub-banding
protocol.
2016-07-08 00:16:07 -04:00
suzuki toshiya 783cbcd67d [mac] Fix Savannah bug #48417.
Mac OS X linker throws errors when `-exported_symbol_list' input
file includes non-existing symbols.  Reported by Ryan Schmidt.

* builds/exports.mk: Exclude ftmac.h from the headers for apinames
by default.  Include it when ftmac.c would be compiled.
2016-07-07 18:55:37 +09:00
Werner Lemberg 474682ff87 * src/truetype/ttinterp.c (TInstruction_Function): Removed, unused. 2016-07-06 08:54:35 +02:00
Werner Lemberg d80fe69651 * Version 2.6.4 released.
=========================

Tag sources with `VER-2-6-4'.

* docs/VERSION.TXT: Update documentation and bump version number to
2.6.4.

* 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/2.6.3/2.6.4/, s/263/264/.

* include/freetype/freetype.h (FREETYPE_PATCH): Set to 4.

* builds/unix/configure.raw (version_info): Set to 18:4:12.
* CMakeLists.txt (VERSION_PATCH): Set to 4.

* docs/CHANGES: Updated.
2016-07-05 15:40:19 +02:00
Werner Lemberg adfec0af94 * src/pfr/pfrsbit.c (pfr_lookup_bitmap_data): Fix compiler warning. 2016-07-05 07:38:52 +02:00
Alexei Podtelezhnikov d1876e5832 [smooth] Variable type revision (part 2).
* src/smooth/ftgrays.c (TArea): Restore original definition as `int'.
(gray_render_line) [FT_LONG64]: Updated.
(gray_convert_glyph): 32-bit band bisection stack should be 32 bands.
(gray_convert_glyph_inner): Trace successes and failures.
2016-07-04 23:46:53 -04:00
Werner Lemberg 5e353f0786 [autofit] Handle single-point contours as segments.
Doing so allows us to link them to edges – some fonts like
`NotoSansGurmukhi-Regular' have such isolated points sitting exactly
on other outlines.

* src/autofit/aflatin.c (af_latin_hints_compute_segments): Don't
ignore one-point contours but handle them specially as one-point
segments.
(af_latin_hints_compute_edges): Append one-point segments to edges
if possible.
2016-07-04 14:59:22 +02:00
Werner Lemberg 8b8c4408dd [autofit] Remove unused structure members.
* src/autofit/afhints.h (AF_SegmentRec, AF_EdgeRec): Remove
`num_linked'.

* src/autofit/afcjk.c (af_cjk_hints_link_segments): Updated.
2016-07-02 18:35:50 +02:00
Werner Lemberg aab2b8d83e [autofit] Update to Unicode 9.0.0.
* src/autofit/afranges.c (af_arab_nonbase_uniranges,
af_cyrl_uniranges): Add new data.
2016-07-02 08:37:44 +02:00
Alexei Podtelezhnikov 597c69596c [smooth] Variable type revision (part 1).
This patch restores original `TCoord' definition as `int' so that the
rendering pool is used more efficiently on LP64 platforms (unix).

* src/smooth/ftgrays.c (gray_TWorker, TCell, gray_TBand): Switch some
fields to `TCoord'.
(gray_find_cell, gray_render_scanline, gray_render_line, gray_hline,
gray_sweep, gray_convert_glyph): Updated.
2016-07-01 23:27:41 -04:00
Alexei Podtelezhnikov ef0a3e7e65 [smooth] Minor clean-ups.
* src/smooth/ftgrays.c (gray_TWorker): Remove redundant `ycount'.
(gray_sweep, gray_convert_glyph, gray_dump_cells): Updated.
2016-06-28 22:56:22 -04:00
Alexei Podtelezhnikov c9cf359fd2 [smooth] Minor clean-ups.
* src/smooth/ftgrays.c (gray_convert_glyph): Do not use volatile
qualifier.
(gray_raster_render): Move span initializations from here.
(gray_sweep): ... to here and remove unused `target' argument.
2016-06-28 00:30:58 -04:00
Alexei Podtelezhnikov 999bcee2d7 [pcf] Fix handling of very large fonts (#47708).
* src/pcf/pcfread.c (pcf_get_encodings): Make `encodingOffset' an
unsigned short.
Only reject `0xFFFF' as an invalid encoding offset.
2016-06-26 08:27:29 +02:00
Werner Lemberg 8ba407a7fe [truetype] Really fix deallocation in case of error (#47726).
* src/truetype/ttgload.c (load_truetype_glyph): Thinko; initialize
`outline.points' also.
2016-06-25 18:09:22 +02:00
Alexei Podtelezhnikov 25e82bc2b5 [smooth] Consolidate memory management.
* src/smooth/ftgrays.c (gray_init_cells): Remove function.
(gray_TWorker): Remove fields that become local variables.
(gray_raster_render): Move rendering buffer declaration from here.
(gray_convert_glyph): ... to here and update accordingly.
2016-06-23 23:17:39 -04:00
Alexei Podtelezhnikov e22334812f [smooth] Consolidate boundary checks.
Removing the checks from `gray_hline' shaves 1% off rendering speed.

* src/smooth/ftgrays.c [STANDALONE_]: Duplicate `FT_MIN' and `FT_MAX'.
(gray_TWorker): No need to store `clip_box'.
(gray_hline): Remove unnecessary boundary checks.
(gray_convert_glyph): Move boundary checks from here.
(gray_raster_render): ... to here and consolidate.
2016-06-22 23:14:26 -04:00
Alexei Podtelezhnikov 78e8fc0dad [smooth] Use `FT_Outline_Get_CBox'.
* src/smooth/ftgrays.c [STANDALONE_]: Duplicate `FT_Outline_Get_CBox'.
(gray_compute_cbox): Remove this function.
(gray_convert_glyph): Update to use `FT_Outline_Get_CBox'.
2016-06-22 00:04:08 -04:00
Alexei Podtelezhnikov c05a1c3f04 Typos. 2016-06-21 23:12:54 -04:00
Werner Lemberg 20c6ef4c25 [smooth] Remove compiler warnings.
* src/smooth/ftgrays.c (gray_convert_glyph): Fix reports from clang.
2016-06-21 11:39:34 +02:00
Alexei Podtelezhnikov 6d07034609 Typos. 2016-06-20 01:09:18 -04:00
Alexei Podtelezhnikov 3c64af98ff [smooth] Sanitize memory managenent.
* src/smooth/ftgrays.c (gray_convert_glyph): Cleaned up.
2016-06-20 00:01:55 -04:00
Alexei Podtelezhnikov 74fd251b4a [smooth] Remove `band_shoot' that never worked.
* src/smooth/ftgrays.c (gray_TWorker): Remove `band_shoot'.
(gray_convert_glyph): Updated.
2016-06-18 22:31:26 -04:00
Alexei Podtelezhnikov 72a0653142 [raster, smooth] Handle FT_RENDER_POOL_SIZE better.
* src/raster/ftraster.c (FT_MAX_BLACK_POOL): New macro.
(ft_black_render): Updated.
* src/smooth/ftgrays.c (FT_MAX_GRAY_POOL): New macro.
(gray_raster_render): Updated.
2016-06-17 23:10:22 -04:00
Werner Lemberg 1e36c2e203 * src/base/md5.c: Updated to recent version. 2016-06-16 06:17:54 +02:00
Alexei Podtelezhnikov 32acceff83 * src/smooth/ftgrays.c (gray_hline): Optimize if-condition. 2016-06-14 23:38:17 -04:00
Werner Lemberg 05a55a56e2 [autofit] Add support for Cherokee script.
* src/autofit/afblue.dat: Add blue zone data for Cherokee.

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

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

* src/autofit/afranges.c: Add Cherokee data.

* src/autofit/afstyles.h: Add Cherokee data.
2016-06-13 12:16:45 +02:00
David Capello f40d7d2b6d [cmake] Avoid modifying `ftconfig.h' and `ftoption.h' files.
* CMakeLists.txt: Each time cmake is run those files are
modified and the whole FreeType library is recompiled.  With this
change we change the files only if there are real modifications, so
we can avoid recompilations.
2016-06-09 10:55:52 +02:00
Werner Lemberg b6b26f4535 [bdf] Check number of properties (#48166).
* src/bdf/bdflib.c (_bdf_parse_start): Implement.
2016-06-09 06:53:48 +02:00
Alexei Podtelezhnikov 77180c7adc [smooth] Re-enable new line renderer on 64-bit archs.
* src/smooth/ftgrays (gray_render_line): Conditionally re-enable new
implementation, where it is safe from overflows.
2016-06-08 23:31:28 -04:00
Alexei Podtelezhnikov 9cf232ed66 [smooth] Minor clean-ups.
* src/smooth/ftgrays.c (gray_dump_cells): Move out of the way.
(gray_render_span): Remove spurious casts and streamline.
2016-06-08 23:19:41 -04:00
Werner Lemberg 223d002c63 [autofit] Add support for Ethiopic script.
* src/autofit/afblue.dat: Add blue zone data for Ethiopic.

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

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

* src/autofit/afranges.c: Add Ethiopic data.

* src/autofit/afstyles.h: Add Ethiopic data.
2016-06-07 13:52:14 +02:00
Werner Lemberg 15eab36340 [autofit] Fix compilation with VS2016 (#48126).
This compiler doesn't recognize the end-of-comment sequence `*/' if
it immediately follows non-ASCII characters.

* src/autofit/afscript.h: Ensure whitespace before `*/'.
2016-06-07 10:36:27 +02:00
Alexei Podtelezhnikov 04e7c7447b ChangeLog fixes. 2016-06-04 23:05:59 -04:00
Werner Lemberg 969960cc90 Comment. 2016-06-04 07:02:46 +02:00
Werner Lemberg 5485a34c77 [truetype] Fix missed test for named instances (#48122).
* src/truetype/ftobjs.c (Mac_Read_sfnt_Resource): Implement.
2016-06-04 06:57:32 +02:00
Nikolaus Waxweiler b459882804 [truetype] Let SHPIX move points in the twilight zone in v40.
* src/truetype/ttinterp.c (Ins_SHPIX): Allow SHPIX to move points in
the twilight zone.  Otherwise, treat SHPIX the same as DELTAP.
Unbreaks various fonts such as older versions of Rokkitt and DTL
Argo T Light that would glitch severly after calling ALIGNRP after a
blocked SHPIX.
2016-05-31 08:39:52 +02:00
Werner Lemberg d28eac249a [type42] Support `CharStrings' entry format as created by LilyPond.
* src/type42/t42parse.c (t42_parse_charstrings): Handle entries
having the format

  (foo) cvn 12345 def
2016-05-30 00:23:59 +02:00
Werner Lemberg 46d36904b0 * src/autofit/afranges.c: Remove `UL' postfix from hex numbers.
Suggested by Alexei.  `UL' is only needed for 16bit compilers, but
it seems noone is using this anymore (and we no longer test whether
FreeType compiles in such an environment).  Otherwise, it is easy to
add the postfix to the `AF_UNICODE_RANGE' macro.
2016-05-28 19:38:43 +02:00
Alexei Podtelezhnikov e9f950938f [smooth] Shrink bisection stack.
The convergence of Bézier flatteners is fast with the deviation
from straight line being assymptotically cut 4-fold on each bisection.
This justifies smaller bisection stack size.

* src/smooth/ftgrays.c (gray_TWorker): Remove common `bez_stack'.
(gray_render_conic): Create and use conic `bez_stack'. Move back the
band analysis from...
(gray_conic_to): ... here.
(gray_render_cubic): Create and use cubic `bez_stack'. Move back the
band analysis from...
(gray_cubic_to): ... here.
(gray_move_to): Updated.
2016-05-26 23:46:38 -04:00
Werner Lemberg e97918c57b [autofit] Fixes for Armenian and Gujarati ranges.
* src/autofit/afranges.c (af_armn_uniranges): Corrected.
(af_guru_nonbase_uniranges): Make U+0A3E a base character.
2016-05-25 07:13:29 +02:00
Werner Lemberg a74f40f9e7 [autofit] Add support for Armenian script.
* src/autofit/afblue.dat: Add blue zone data for Armenian.

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

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

* src/autofit/afranges.c: Add Armenian data.

* src/autofit/afstyles.h: Add Armenian data.
2016-05-24 18:27:18 +02:00
Werner Lemberg 771d3c8ae2 * builds/unix/unix-cc.in (LINK_LIBRARY): Use `-export-symbols'.
This was commented about 10 years ago – I think the reason then to
disable libtool's `-export-symbols' option was to give some badly
programmed applications access to internal FreeType functions.

I believe that we should no longer take care of such programs; the
number of symbols exported should be rather restricted as much as
possible.
2016-05-23 06:49:38 +02:00
Werner Lemberg 9d179e3d70 [autofit] Add blue-zone support for Gurmukhi script.
This essentially moves the Gurmukhi script from the `Indic' hinter to
the `Latin' hinter.

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

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

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

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

* src/autofit/afstyles.h: Update Gurmukhi data; in particular, use
AF_WRITING_SYSTEM_LATIN.
2016-05-22 08:38:41 +02:00
Werner Lemberg d583561e1d Minor clang++ fixes.
* src/base/ftobjs.c (FT_Add_Module), src/psaux/psobjs.c
(ps_parser_load_field), src/type1/t1load.c (parse_subrs): Add
initializer.

* src/cache/ftccache.h (FTC_CACHE_TRYLOOP_END): Avoid implicit
conversion from NULL to boolean.
2016-05-21 11:20:42 +02:00
Werner Lemberg 6e80a098e7 Work around a bug of the C 8.0.0.1 compiler on AIX 5.3 (#47955).
* include/freetype/internal/ftmemory.h (cplusplus_typeof): Use
braces for `extern "C++"'.
2016-05-21 10:58:40 +02:00
Nikolaus Waxweiler 01de37e54f [truetype] Make TT_LOADER_SET_PP support subpixel hinting [3/3].
* src/truetype/ttgload.c (TT_LOADER_SET_PP): Replace macro with...
(tt_loader_set_pp): ... this new function.
Update all callers.
2016-05-18 07:07:44 +02:00
Nikolaus Waxweiler ed1d8983f3 [truetype] New implementation of v38 bytecode interpreter [2/3].
This patch actually modifies the bytecode interpreter.

See added comments in `ttinterp.h' for more information on this and
the following commit in the series.

* src/truetype/ttinterp.c (SUBPIXEL_HINTING): Replaced by...
(NO_SUBPIXEL_HINTING, SUBPIXEL_HINTING_INFINALITY,
SUBPIXEL_HINTING_MINIMAL): ...new macros.
(Direct_Move, Direct_Move_X, Direct_Move_Y): Handle backwards
compatibility.
Updated.
(Ins_RS, Ins_FDEF, Ins_ENDF, Ins_CALL, Ins_LOOPCALL, Ins_MD):
Updated.
(Ins_INSTCTRL): Handle native ClearType mode flag.
Updated.
(Ins_FLIPPT, Ins_FLIPRGON, Ins_FLIPRGOFF): Handle backwards
compatibility.
(Move_Zp2_Point): Ditto.
(Ins_SHP): Updated.
(Ins_SHPIX): Handle backwards compatibility.
Updated.
(Ins_MSIRP, Ins_MDAP, Ins_MIAP, Ins_MDRP, Ins_MIRP): Updated.
(Ins_ALIGNRP): Updated.
(Ins_IUP, Ins_DELTAP): Handle backwards compatibility.
Updated.
(Ins_GETINFO): Handle v38 flags.
Updated.
(TT_RunIns): Handle backwards compatibility mode.
Updated.
2016-05-18 06:58:44 +02:00
Nikolaus Waxweiler 596157365a [truetype] New implementation of v38 bytecode interpreter [1/3].
This patch prepares data structures and the like.

See added comments in `ttinterp.h' for more information on this and
the following commits in the series.

* devel/ftoption.h, include/freetype/config/ftoption.h
(TT_CONFIG_OPTION_SUBPIXEL_HINTING): Assign values to differentiate
between subpixel versions.
(TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY,
TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL): New macros.

* include/freetype/ftttdrv.h (TT_INTERPRETER_VERSION_40): New macro.

* include/freetype/internal/tttypes.h (TT_FaceRec): Updated.

* src/truetype/ttinterp.h (TT_ExecContextRec): Define new fields
`subpixel_hinting_lean', `vertical_lcd_lean',
`backwards_compatibility', `iupx_called', iupy_called', and
`grayscale_cleartype' for new hinting mode.

* src/truetype/ttdriver.c (tt_property_set): Handle v38 and v40
interpreters conditionally.

* src/truetype/ttgload.c (TT_Hint_Glyph): Save phantom points unless
in v38 backwards compatibility mode.
Updated.
(compute_glyph_metrics): Add v38 backwards compatibility mode
constraint for adjusting advance widths.
Updated.
(tt_loader_init): Handle new flags `subpixel_hinting_lean',
`grayscale_cleartype', and `vertical_lcd_lean'.
Updated.
(tt_get_metrics, TT_Process_Simple_Glyph, TT_LOADER_SET_PP):
Updated.

* src/truetype/ttobjs.c (tt_driver_init): Conditionally set
default interpreter version number.

* src/truetype/ttsubpix.c, src/truetype/ttsubpix.h: Updated.
2016-05-18 06:57:59 +02:00
Werner Lemberg 119e8e41ef [cff] Fix matrix scaling (#47848).
* include/freetype/config/ftstdlib.h (FT_LONG_MIN): New macro.

* src/cff/cffparse.c (cff_parse_font_matrix): Use largest scaling
value of all matrix coefficients to scale matrix.

* src/cff/cffobjs.c (cff_face_init): Use `matrix->yx' member for
matrix normalization if `matrix->yy' is zero.
2016-05-17 19:54:09 +02:00
Werner Lemberg 533887a947 Whitespace, formatting. 2016-05-16 20:38:41 +02:00
Werner Lemberg bebac3cf5b [base] Reject invalid sfnt Mac resource (#47891).
* src/base/ftobjs.c (open_face_PS_from_sfnt_stream): Check validity
of `CID ' and `TYPE1' table offset and length.
2016-05-16 20:16:35 +02:00
Werner Lemberg 09f0e0fcbe [cid] Fix scanning for `StartData' and `/sfnts' (#47892).
* src/cid/cidparse.c (STARTDATA, STARTDATA_LEN, SFNTS, SFNTS_LEN):
New macros.
(cid_parser_new): Fix and document algorithm.
2016-05-16 19:44:19 +02:00
suzuki toshiya a7d8bdbcfe [truetype] Improve the recursive reference detector.
The previous fix for #46372 misunderstood a composite glyph referring
same component twice as a recursive reference.  See the discussion

http://lists.gnu.org/archive/html/freetype/2016-05/msg00000.html

Thanks to Khaled Hosny for finding this issue.

* src/truetype/ttgload.c (ft_list_get_node_at): A function to get
the i-th node from FT_List.  (load_truetype_glyph): In the traversal
scan of the reference tree in the composite glyph, we clear the
nodes filled by previous sibling chain.
2016-05-16 21:57:26 +09:00
Alexei Podtelezhnikov 500bcbdded Duplicates. 2016-05-07 22:28:43 -04:00
Werner Lemberg 7ae9b9996b [cache] Allow value 0 for face ID.
We never dereference `face_id', and some implementations might use a
running number instead of a pointer.  Additionally, disallowing
value zero was undocumented.

* src/cache/ftccmap.c (FTC_CMapCache_Lookup), src/cache/ftcmanag.c
(FTC_Manager_LookupFace, FTC_Manager_RemoveFaceID): Remove test for
`face_id'.
2016-05-07 16:24:03 +02:00
Alexei Podtelezhnikov 6e88087d69 [smooth] More efficient accounting of conic splits and draws.
A single decrement counter of segments to draw, instead of an array,
contains all the information necessary to decide when to split and
when to draw a conic segment. The number of splits before each draw is
equal to the number of trailing zeros in the counter.

* src/smooth/ftgrays.c (gray_TWorker): Remove `lev_stack'.
(gray_render_conic): Updated to use decrement counter of segments.
2016-05-05 23:41:03 -04:00
Werner Lemberg 0b3cb8a8af [cff, truetype] Fix logic for `FT_Property_Set'.
Otherwise some properties could be set to arbitrary values, which is
harmless, but querying could give wrong positive results.

* src/cff/cffdrivr.c (cff_property_set) [hinting-engine],
* src/truetype/ttdriver.c (tt_property_set) [interpreter-version]:
Only allow defined values.
2016-05-05 12:28:48 +02:00
Werner Lemberg 22167629d1 [autofit] Add blue-zone support for Gujarati script.
This essentially moves the Gujarati script from the `Indic' hinter to
the `Latin' hinter.

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

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

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

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

* src/autofit/afstyles.h: Update Gujarati data; in particular, use
AF_WRITING_SYSTEM_LATIN.
2016-04-25 21:18:24 +02:00
Werner Lemberg d9fb2175c4 Minor.
* include/freetype/freetype.h (FT_HAS_*, FT_IS_*): Protect macro
argument with parentheses.
2016-04-24 15:27:32 +02:00
Werner Lemberg 432e00db2e [truetype] Fix deallocation in case of error (#47726).
* src/truetype/ttgload.c (load_truetype_glyph): Initialize fields in
`outline' that are going to be deallocated in case of error.
2016-04-24 08:14:07 +02:00
Werner Lemberg 80afef8bd6 [autofit] Improve Georgian blue zone characters.
Suggested by Akaki Razmadze <razmadzekoko@gmail.com>.

* src/autofit/afblue.dat (AF_BLUE_STRING_GEORGIAN_MKHEDRULI_BOTTOM):
Updated.

* src/autofit/afblue.c: Regenerated.
2016-04-23 21:34:15 +02:00
David Capello 9224f05393 [cmake] Honor SKIP_INSTALL_* settings (as used in zlib).
As FreeType depends on zlib, if we don't install zlib (e.g., because
we defined SKIP_INSTALL_ALL), FreeType cannot be installed, too
(cmake triggers an error saying that FreeType cannot be installed
because zlib target isn't in the export set).

* CMakeLists.txt: Honor `SKIP_INSTALL_HEADERS',
`SKIP_INSTALL_LIBRARIES', and `SKIP_INSTALL_ALL' settings.
2016-04-16 10:24:24 +02:00
Behdad Esfahbod 99eff67824 [truetype] Another fix for non-intermediate GX tuples.
* src/truetype/ttgxvar.c (ft_var_apply_tuple): Add some missing
cases.
2016-04-16 07:32:23 +02:00
Alexei Podtelezhnikov 213f0ca3e3 Remove forgotten macro.
* include/freetype/internal/internal.h
[FT_INTERNAL_POSTSCRIPT_GLOBALS_H]: Remove.
2016-04-13 00:19:54 -04:00
Alexei Podtelezhnikov f46b282d4d Typos. 2016-04-11 23:22:57 -04:00
Werner Lemberg c8c7ad7910 [autofit] Add support for Georgian scripts.
Georgian is problematic, since `uppercase' forms of Mkhedruli
(called Mtavruli) are not yet defined in Unicode, which means that
proper blue zones can't be defined.  However, there is already a
proposal submitted to Unicode; see

  http://www.unicode.org/L2/L2016/16034-n4707-georgian.pdf

Additionally, due to historical reasons, Unicode treats Khutsuri as
the same script as Mkhedruli, and so does OpenType.  However, since
the two scripts have completely different shapes it can happen that
blue zones differ considerably.  The tag `geok' used here (derived
from ISO 15924) to differentiate the two scripts is not an OpenType
tag in use.  If we now have a font that contains both glyphs for
Mkhedruli and Khutsuri, and it uses OpenType features for both also,
HarfBuzz unavoidably treats all glyphs as `geor'.  As a consequence,
blue zones for `geok' are not used for glyphs involved in the
OpenType features.

An issue not yet resolved is which OpenType feature should be used
to access Mtavruli glyph shapes; right now, FreeType doesn't set up
support for them, but it is easy to add them later on as soon as
more information is available.

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

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

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

* src/autofit/afranges.c: Add Georgian data.

* src/autofit/afstyles.h: Add Georgian data.
2016-04-09 08:24:00 +02:00
Alexei Podtelezhnikov c6d99a42b9 Typos. 2016-04-08 00:05:50 -04:00
Alexei Podtelezhnikov bbb60965f9 Typos. 2016-04-07 01:29:44 -04:00
Werner Lemberg bf8f100d2c [autofit] Provide dummy blue zone for pseudo script `none'.
Even if the dummy hinter is used as the handler for `none' (which
doesn't use blue zones), it is more consistent than the old value
(which was 0), pointing to Arabic...

* src/autofit/afblue.dat: Add `AF_BLUE_STRINGSET_NONE'.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afstyles.h (none_dflt): Use AF_BLUE_STRINGSET_NONE.
2016-04-05 11:43:58 +02:00
Werner Lemberg fb550bf466 * src/pfr/pfrload.c (pfr_aux_name_load): Thinko (#47567). 2016-03-30 18:55:27 +02:00
Werner Lemberg aff6ebb9a6 * src/pfr/pfrload.c (pfr_log_font_count): Better font size estimate. 2016-03-30 09:11:02 +02:00
Werner Lemberg ccd771cdf6 * src/pfr/pfrload.c (pfr_aux_name_load): Fix memory leak (#47567). 2016-03-30 08:44:46 +02:00
Werner Lemberg ff82747e6d * src/base/ftadvance.c (FT_Get_Advances): Fix invalid left shift. 2016-03-29 09:19:22 +02:00
Werner Lemberg 351fc4b4a4 [pfr] Fix binary search (#47514).
* src/pfr/pfrsbit.c (pfr_lookup_bitmap_data): Handle border
conditions correctly.
2016-03-29 09:13:13 +02:00
Werner Lemberg 2a03e5d9fb [pfr] Minor.
* src/pfr/pfrsbit.c (pfr_lookup_bitmap_data): Replace `left',
`right', and `middle' with `min', `max', and `mid' as used in other
FreeType binary search code.
(pfr_load_bitmap_metrics): Fix invalid left shift.
2016-03-29 08:56:03 +02:00
Werner Lemberg 31dc8f98f6 * src/pfr/pfrtypes.h: Replace all enums with macros.
We need `~FOO' to unset bits, and only with unsigned values (which
`enum' isn't normally) this works cleanly.
2016-03-29 08:37:07 +02:00
Werner Lemberg b069a590a9 [pfr] Robustify bitmap strike handling (#47514).
We did a binary search for a charcode without ensuring that the
searched data is ordered.  Validating the order is now done lazily,
this is, the first access to a bitmap glyph triggers the order check
in the corresponding bitmap strike.

* src/pfr/pfrtypes.h (PFR_BitmapFlags): New values
`PFR_BITMAP_VALID_CHARCODES' and `PFR_BITMAP_CHARCODES_VALIDATED'.

* src/pfr/pfrsbit.c (pfr_lookup_bitmap_data): Make `flags' argument
a pointer.  Handle new PFR_BITMAP_XXX flags.
(pfr_slot_load_bitmap): Updated.
2016-03-26 22:42:13 +01:00
Werner Lemberg 0003cb9162 [pfr] Fix handling of compound glyphs.
Extra items are indicated with different bit positions.

* src/pfr/pfrtypes.h (PFR_GlyphFlags): Replace
`PFR_GLYPH_EXTRA_ITEMS' with `PFR_GLYPH_SIMPLE_EXTRA_ITEMS' and
`PFR_GLYPH_COMPOUND_EXTRA_ITEMS'.

* src/pfr/pfrgload.c (pfr_glyph_load_simple,
pfr_glyph_load_compound): Use them.
2016-03-26 22:42:13 +01:00
Werner Lemberg 2aa6956565 [pfr] Minor.
* src/pfr/pfrsbit.c, srf/pfr/pfrobjs.c: Use flag names instead of
bare numbers.
2016-03-26 22:42:13 +01:00