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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

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2016-12-20 Ben Wagner <bungeman@google.com>
Werner Lemberg <wl@gnu.org>
[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 Werner Lemberg <wl@gnu.org>
[cff, truetype] Fast advance width retrieval for fonts with HVAR.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* src/base/ftadvanc.c (LOAD_ADVANCE_FAST_CHECK): Don't handle MM.
* src/cff/cffdrivr.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(cff_get_advances): Test for HVAR and VVAR.
* src/truetype/ttdriver.c (tt_get_advances): Test for HVAR and VVAR.
2016-12-18 Werner Lemberg <wl@gnu.org>
[base] Fix invalid mac font recursion.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=304
* src/base/ftobjs.c (FT_Open_Face): Code moved to...
(ft_open_face_internal): ... this function.
Add a parameter to control whether we try special Mac font handling
in case of failure.
(FT_Open_Face, FT_New_Face, FT_New_Memory_Face,
open_face_from_buffer): Use `ft_open_face_internal'.
2016-12-18 Werner Lemberg <wl@gnu.org>
* src/cff/cffobjs.c (cff_face_init): Make named instances work.
2016-12-18 Werner Lemberg <wl@gnu.org>
[truetype, cff] Extend `get_var_blend' function of MM service.
In particular, we need access to named instance data.
* include/freetype/internal/services/svmm.h (FT_Get_Var_Blend_Func):
Add argument for `FT_MM_Var'.
* src/cff/cffload.c (cff_get_var_blend): Updated.
* src/cff/cffload.h: Updated.
* src/cff/cf2ft.c (cf2_getNormalizedVector): Updated.
* src/truetype/ttgxvar.c (tt_get_var_blend): Updated.
Accept value `NULL' for arguments.
* src/truetype/ttgxvar.h: Updated.
2016-12-18 Werner Lemberg <wl@gnu.org>
[sfnt] Handle `fvar' with zero axes as a non-MM font.
This is better behaviour than exiting with an error.
* include/freetype/internal/tttypes.h (TT_Face): Add `use_fvar'
field.
* src/sfnt/sfobjs.c (sfnt_init_face): Compute `use_fvar', also
updating the validation code.
Use `use_fvar' to compute FT_FACE_FLAG_MULTIPLE_MASTERS.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Remove `fvar' validation
code.
2016-12-18 Werner Lemberg <wl@gnu.org>
Minor GX code shuffling.
* include/freetype/internal/tttypes.h (TT_Face): Move
`is_default_instance' into TT_CONFIG_OPTION_GX_VAR_SUPPORT
block.
* src/sfnt/sfobjs.c (sfnt_init_face): Updated.
* src/truetype/ttgload.c (IS_DEFAULT_INSTANCE): New macro.
(TT_Load_Glyph): Use it.
2016-12-18 Werner Lemberg <wl@gnu.org>
[cff] Better handling of non-CFF font formats.
* src/cff/cffload.c (cff_font_load): Pure CFFs don't have a
signature, so return `FT_Err_Unknown_File_Format' more often.
2016-12-17 Werner Lemberg <wl@gnu.org>
* src/cff/cffload.c (cff_build_blend_vector): Remove redundant code.
2016-12-17 Werner Lemberg <wl@gnu.org>
* src/truetype/ttobjs.c (tt_face_init): Simplify conditional code.
2016-12-17 Werner Lemberg <wl@gnu.org>
[sfnt, truetype] Various sanitizing fixes.
* src/sfnt/sfobjs.c (sfnt_init_face): If the axis count in `fvar' is
zero, set `num_instances' to zero.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Handle `fvar' table with
zero axes as invalid.
* src/truetype/ttobjs.c (tt_face_init): Improve logic of loading
`loca', `cvt', `fpgm', and `prep' table.
2016-12-17 Werner Lemberg <wl@gnu.org>
Improve tracing of `FT_Open_Face'.
* src/base/ftobjs.c (FT_Open_Face): Return info on number of
available faces and numbered instances, or the indices of the
requested face and numbered instance.
* src/sfnt/sfobjs. (sfnt_open_font): Trace number of subfonts.
2016-12-17 Werner Lemberg <wl@gnu.org>
* src/cff/cffload.c (cff_load_private_dict): Always init `blend'.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=295
2016-12-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix `cvar' sanity test.
Reported by Dave Arnold.
* src/truetype/ttgxvar.c (tt_face_vary_cvt): Use tuple count mask.
2016-12-16 Werner Lemberg <wl@gnu.org>
[cff, truetype] Remove compiler warnings; fix `make multi'.
* src/cff/cf2font.h: Include `cffload.h'.
* src/cff/cffload.c: Include FT_MULTIPLE_MASTERS_H and
FT_SERVICE_MULTIPLE_MASTERS_H.
(cff_vstore_load): Eliminate `vsSize'.
(cff_load_private_dict): Tag as `FT_LOCAL_DEF'.
* src/cff/cffload.h: Include `cffobjs.h'.
Provide declaration for `cff_load_private_dict'.
* src/truetype/ttgxvar.c (ft_var_load_hvar): Eliminate
`minorVersion' and `map_offset'.
2016-12-16 Werner Lemberg <wl@gnu.org>
[cff] Fix heap buffer overflow (#49858).
* src/cff/cffparse.c (cff_parser_run): Add one more stack size
check.
2016-12-15 Werner Lemberg <wl@gnu.org>
Fix clang warnings.
* src/cff/cffload.c (cff_blend_doBlend): Add cast.
(cff_subfont_load): Set `error' correctly.
* src/sfnt/ttmtx.c (tt_face_get_metrics): Typo.
2016-12-15 Dave Arnold <darnold@adobe.com>
Werner Lemberg <wl@gnu.org>
[cff] Implement CFF2 support (2/2).
The font variation code. All parts dependent on the GX code in the
`truetype' module are guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
In other words, you can still compile the `cff' module without
defining TT_CONFIG_OPTION_GX_VAR_SUPPORT (which brings you CFF2
support without font variation).
* src/cff/cf2font.c (cf2_font_setup): Add support for font
variation.
* src/cff/cf2font.h (CF2_Font): Add fields for variation data.
* src/cff/cf2ft.c (cf2_free_instance): Free blend data.
(cf2_getVStore, cf2_getNormalizedVector): New functions.
* src/cff/cf2ft.h: Updated.
* src/cff/cf2intrp.c: Include `cffload.h'.
(cf2_cmdRESERVED_15, cf2_cmdRESERVED_16): Replace with...
(cf2_cmdVSINDEX, cf2_cmdBLEND): ... this new enum values.
(cf2_doBlend): New function.
(cf2_interpT2CharString): Handle `vsindex' and `blend' opcodes.
* src/cff/cffload.c (FT_fdot14ToFixed): New macro.
(cff_vstore_done, cff_vstore_load): New functions.
(cff_blend_clear, cff_blend_doBlend, cff_blend_build_vector,
cff_blend_check_vector): New functions.
(cff_load_private_dict): Add arguments for blend vector.
Handle blend data.
(cff_subfont_load, cff_subfont_done): Updated.
(cff_font_load): Handle CFF2 variation store data.
(cff_font_done): Updated.
* src/cff/cffload.h: Include `cffparse.h'.
Updated.
* src/cff/cffobjs.c (cff_face_done): Updated.
* src/cff/cffparse.c: Include `cffload.h'.
(cff_parse_num): Handle internal value 255.
(cff_parse_vsindex, cff_parse_blend): New functions.
(CFF_FIELD_BLEND): New macro.
(cff_parser_run): Updated.
* src/cff/cffparse.h (cff_kind_blend): New enum value.
* src/cff/cfftoken.h: Handle `vstore', `vsindex', and `blend'
dictionary values.
* src/cff/cfftypes.h (CFF_VarData, CFF_AxisCoords, CFF_VarRegion,
CFF_VStore, CFF_Blend): New structures.
(CFF_FontRecDict): Add `vstore_offset' field.
(CFF_Private): Add `vsindex' field.
(CFF_SubFont): Add fields for blend data.
(CFF_Font): Add `vstore' field.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): `CFF2' is equal to `gvar',
since glyph variation data is directly embedded.
(TT_Set_MM_Blend): Don't load `gvar' table for CFF2 fonts.
2016-12-15 Dave Arnold <darnold@adobe.com>
Werner Lemberg <wl@gnu.org>
[cff] Implement CFF2 support (1/2).
This commit does not contain the blend code for font variation
support, which follows in another commit.
You should ignore whitespace while inspecting this commit.
* include/freetype/internal/tttypes.h (TT_Face): Add `isCFF2'
member.
* src/cff/cf2font.h (CF2_Font): Add `isCFF2' member.
* src/cff/cf2ft.c (cf2_decoder_parse_charstrings): Handle `isCFF2'
flag.
(cf2_getMaxstack): New function.
* src/cff/cf2ft.h: Updated.
* src/cff/cf2intrp.c (cf2_escRESERVED_38): New enum.
(cf2_interpT2CharString): Handle CFF2 differences.
Add tracing message for errors.
* src/cff/cffdrivr.c (cff_get_glyph_name, cff_get_name_index):
Update for CFF2.
* src/cff/cffload.c (FT_FIXED_ONE): New macro.
(cff_index_init, cff_index_load_offsets, cff_index_access_element,
cff_index_get_name, cff_ft_select_get, cff_load_private_dict,
cff_subfont_load, cff_font_load): Handle CFF2.
* src/cff/cffload.h: Updated.
* src/cff/cffobjs.c (cff_face_init): Handle CFF2.
* src/cff/cffparse.c (cff_parse_maxstack): New function.
(CFFCODE_TOPDICT, CFFCODE_PRIVATE): Removed
* src/cff/cffparse.h (CFF2_MAX_STACK, CFF2_DEFAULT_STACK): New
macros.
(CFF2_CODE_TOPDICT, CFF2_CODE_FONTDICT, CFF2_CODE_PRIVATE): New
macros.
* src/cff/cfftoken.h: Add fields for CFF2 dictionaries (but no blend
stuff).
* src/cff/cfftypes.h (CFF_Index): Add `hdr_size' field.
(CFF_FontRecDict): Add `maxstack' field.
(CFF_Private): Add `subfont' field.
(CFF_Font): Add `top_dict_length' and `cff2' fields.
* src/sfnt/sfobjs.c (sfnt_load_face): Handle `CFF2' table.
2016-12-15 Werner Lemberg <wl@gnu.org>
Dave Arnold <darnold@adobe.com>
[truetype] Provide HVAR advance width variation as a service.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* src/truetype/ttdriver.c (tt_service_metrics_variations): Updated.
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Prevent
double adjustment of advance width.
* src/sfnt/ttmtx.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(tt_face_get_metrics): Apply metrics variations.
2016-12-15 Dave Arnold <darnold@adobe.com>
Werner Lemberg <wl@gnu.org>
[truetype] Provide function to apply `HVAR' advance width variation.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* src/truetype/ttgxvar.c (tt_hadvance_adjust): New function.
* src/truetype/ttgxvar.h: Updated.
2016-12-15 Dave Arnold <darnold@adobe.com>
Werner Lemberg <wl@gnu.org>
[truetype] Add `HVAR' table parsing.
Note that this is not complete yet; it only handles advance width
variation.
Activation of the code follows in another commit.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* include/freetype/ftmm.h (FT_Var_Named_Style): Add `psid' member.
* src/truetype/ttgxvar.h (GX_HVarData, GX_AxisCoords, GX_HVarRegion,
GX_HVStore, GX_WidthMap): New auxiliary structures for...
(GX_HVarTable): ... HVAR main structure.
(GX_BlendRec): Add data for HVAR loading.
* src/truetype/ttgxvar.c (FT_FIXED_ONE, FT_fdot14ToFixed,
FT_intToFixed, FT_fixedToInt): New macros.
(ft_var_load_hvar): New function.
(TT_Get_MM_Var): Updated.
(tt_done_blend): Deallocate HVAR data.
2016-12-15 Dave Arnold <darnold@adobe.com>
[cff] Extend number parsing.
The forthcoming CFF2 support needs a dynamic parsing limit.
* src/cff/cffparse.c (cff_parse_num, do_fixed, cff_parse_fixed,
cff_parse_fixed_scaled, cff_parse_fixed_dynamic): Add argument for
parser.
(cff_parse_font_matrix, cff_parse_font_bbox, cff_parse_private_dict,
cff_parse_multiple_master, cff_parse_cid_ros, cff_parser_run): Updated.
* src/cff/cffparse.h (cff_parse_num): Export locally.
2016-12-15 Dave Arnold <darnold@adobe.com>
[cff] Implement dynamic stack size for Adobe engine.
This also adds `cf2_stack_setReal' and `cf2_stack_pop', needed for
the forthcoming CFF2 support.
* src/cff/cf2stack.c (cf2_stack_init): Add argument for stack size.
(cf2_stack_free): Deallocate stack.
(cf2_stack_count, cf2_stack_pushInt, cf2_stack_pushFixed,
cf2_stack_popInt, cf2_stack_popFixed, cf2_stack_getReal,
cf2_stack_clear): Updated.
(cf2_stack_setReal, cf2_stack_pop): New functions.
* src/cff/cf2stack.h (CF2_Stack): Add `stackSize' member.
Update function declarations.
* src/cff/cf2intrp.c (cf2_interpT2CharString): Updated.
* src/cff/cffparse.c (cff_parser_init): Add parameter for stack
size; return error code.
(cff_parser_done): New function.
(cff_parser_run): Updated.
* src/cff/cffparse.h (CFF_Parser): Add `stackSize' member and make
`stack' a pointer.
Update function declarations.
* src/cff/cffload.c (cff_load_private_dict, cff_subfont_load):
Updated.
2016-12-15 Dave Arnold <darnold@adobe.com>
Werner Lemberg <wl@gnu.org>
[cff] Code shuffling.
* src/cff/cfftypes.h (CFF_Font): Add `library' and `base_offset'
fields.
* src/cff/cffload.c (cff_subfont_load): Change last argument to
`CFF_Font'
Split off parsing of private dictionary into...
(cff_load_private_dict): ...this new function.
(cff_font_load): Updated.
2016-12-14 Werner Lemberg <wl@gnu.org>
[sfnt, truetype] Add framework for Metrics Variations service.
No effect yet; service functions will be implemented later on.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* include/freetype/internal/services/svmetric.h: New file.
* include/freetype/internal/ftserv.h
(FT_SERVICE_METRICS_VARIATIONS_H): New macro.
* include/freetype/internal/tttypes.h (TT_Face): New field `var'.
* src/sfnt/sfobjs.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(sfnt_init_face): Initialize `face->var'.
* src/truetype/ttdriver.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(tt_service_metrics_variations): New service.
(tt_services): Updated.
* src/truetype/ttpic.h: Updated.
2016-12-14 Werner Lemberg <wl@gnu.org>
[cff] Add Multiple Masters service.
The code simply uses the MM functions from the `truetype' module.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* include/freetype/internal/tttypes.h (TT_Face): New field `mm'.
* src/cff/cffdrivr.c: Include FT_SERVICE_MULTIPLE_MASTERS_H.
(cff_set_mm_blend, cff_get_mm_blend, cff_get_mm_var,
cff_set_var_design, cff_get_var_design): New functions.
(cff_service_multi_masters): New service.
(cff_services): Updated.
* src/cff/cffload.c (cff_get_var_blend, cff_done_blend): New
functions.
* src/cff/cffload.h: Updated.
* src/cff/cffpic.h (CFF_SERVICE_MULTI_MASTERS_GET): New macro.
* src/sfnt/sfobjs.c: Include FT_SERVICE_MULTIPLE_MASTERS_H.
(sfnt_init_face): Initialize `face->mm'.
2016-12-14 Werner Lemberg <wl@gnu.org>
Extend functionality of `ft_module_get_service'.
It can now differentiate between local and global searches.
* src/base/ftobjs.c (ft_module_get_service): Add `global' argument.
(FT_Get_TrueType_Engine_Type): Updated.
* src/cff/cffdrivr.c (cff_get_ps_name, cff_get_cmap_info): Updated.
* include/freetype/internal/ftobjs.h: Updated.
* include/freetype/internal/ftserv.h (FT_FACE_FIND_GLOBAL_SERVICE):
Updated.
2016-12-14 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (tt_get_var_blend): Fix compiler warning.
2016-12-14 Dave Arnold <darnold@adobe.com>
Werner Lemberg <wl@gnu.org>
[sfnt, cff] Minor preparations.
* include/freetype/tttags.h (TTAG_CFF2, TTAG_HVAR, TTAG_MVAR,
TTAG_VVAR): New SFNT table tags.
* src/cff/cf2fixed.h (CF2_FIXED_ONE, CF2_FIXED_EPSILON): Add cast.
2016-12-10 Werner Lemberg <wl@gnu.org>
[truetype, type1] Add `get_var_blend' to MM service.
For internal use; we want to share code between the forthcoming CFF2
support and TrueType.
* include/freetype/internal/services/svmm.h (FT_Get_Var_Blend_Func):
New typedef.
(MultiMasters): Add `get_var_blend'.
(FT_Service_MultiMasters): Updated.
* src/truetype/ttgxvar.c (tt_get_var_blend): New function.
* src/truetype/ttgxvar.h: Updated.
* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.
* src/type1/t1driver.c (t1_service_multi_masters): Updated.
2016-12-10 Werner Lemberg <wl@gnu.org>
[truetype, type1] Add `done_blend' to MM service.
For internal use; we want to share code between the forthcoming CFF2
support and TrueType.
* include/freetype/internal/services/svmm.h (FT_Done_Blend_Func):
New typedef.
(MultiMasters): Add `done_blend'.
(FT_Service_MultiMasters): Updated.
* src/truetype/ttgxvar.c (tt_done_blend): Use `TT_Face' as argument.
* src/truetype/ttgxvar.h: Updated.
* src/truetype/ttobjs.c (TT_Face_Done): Updated.
* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.
* src/type1/t1driver.c (t1_service_multi_masters): Updated.
2016-12-09 Werner Lemberg <wl@gnu.org>
[sfnt] Revert change from 2016-12-08.
I missed the functionality of `ft_module_get_service', which makes
the change unnecessary.
2016-12-08 Werner Lemberg <wl@gnu.org>
Add framework to support services with 8 functions.
We will need this for CFF variation font support.
* include/freetype/internal/ftserv.h (FT_DEFINE_SERVICEDESCREC8):
New macro.
2016-12-08 Werner Lemberg <wl@gnu.org>
[sfnt] Add `get_glyph_name' and `get_name_index' to SFNT interface.
CFF2 fonts will need access to those two functions.
* include/freetype/internal/sfnt.h: Include FT_SERVICE_GLYPH_DICT_H.
(SFNT_Interface): Add `get_glyph_name' and `get_name_index' members.
(FT_DEFINE_SFNT_INTERFACE): Updated.
* src/sfnt/sfdriver.c (sfnt_get_glyph_name, sfnt_get_name_index):
Fix signatures to exactly correspond to the glyph dict service
function typedefs.
(sfnt_interface): Updated.
2016-12-06 Dave Arnold <darnold@adobe.com>
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 Werner Lemberg <wl@gnu.org>
* src/type1/t1load.c (parse_subrs): Fix memory leak.
The `subrs' keyword might erroneously occur multiple times.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=231
2016-12-01 Werner Lemberg <wl@gnu.org>
[gzip] Improve building with external zlib (#49673).
Building FreeType with external zlib 1.2.8 makes msvc 14 stop with
the following error.
ftgzip.c
zlib-1.2.8\zlib.h(86): error C2061:
syntax error: identifier 'z_const'
zlib-1.2.8\zlib.h(94): error C2054:
expected '(' to follow 'z_const'
zlib-1.2.8\zlib.h(94): error C2085:
'msg': not in formal parameter list
...
zlib-1.2.8\zlib.h(877): fatal error C1003:
error count exceeds 100; stopping compilation
The error happens because FreeType keeps an own copy of zlib-1.1.4
under `src/gzip'. When building `src/gzip/ftgzip.c' with
FT_CONFIG_OPTION_SYSTEM_ZLIB defined, it uses
#include <zlib.h>
which correctly finds an external `zlib.h', but `zlib.h' itself has
a line
#include "zconf.h"
which makes Visual Studio 2015 find `src/gzip/zconf.h' while
compiling the files in `src/gzip'.
* src/gzip/zconf.h: Rename to...
* src/gzip/ftzconf.h: ... this.
* src/gzip/zlib.h, src/gzip/rules.mk (GZIP_DRV_SRCS): Updated.
2016-12-01 Oleksandr Chekhovskyi <oleksandr.chekhovskyi@gmail.com>
[autofit] Fix Emscripten crash (patch #9180).
Function calls through pointers must use a matching signature to
work on Emscripten, since such calls are dispatched through lookup
tables grouped by signature.
* src/autofit/aftypes.h (AF_WritingSystem_ApplyHintsFunc): Fix
typedef.
2016-11-29 Werner Lemberg <wl@gnu.org>
[smooth] Revert previous commit. Already fixed with 6ca54c64.
2016-11-29 Werner Lemberg <wl@gnu.org>
[smooth] Avoid conditional jump on uninitialized value (#49711).
* src/smooth/ftgrays.c (gray_raster_render): Initialize `worker'.
2016-11-27 Nikolaus Waxweiler <madigens@gmail.com>
[autofit] Code shuffling.
Also improve some comments and remove unused code.
No functional change.
* src/autofit/afloader.c (af_loader_load_g): Merged with...
(af_loader_load_glyph): ...this function.
Split off emboldening code into...
(af_loader_embolden_glyph_in_slot): ... this function.
2016-11-17 Werner Lemberg <wl@gnu.org>
Better support of LLP64 systems with gcc (and clang).
* builds/unix/configure.raw: Call `AC_TYPE_LONG_LONG_INT'.
* builds/unix/ftconfig.in (FT_LONG64): Enable for LLP64 systems (and
suppress warnings) even without `FT_CONFIG_OPTION_FORCE_INT64'.
2016-11-10 Werner Lemberg <wl@gnu.org>
Fix `lcd_weights' array size.
* include/freetype/internal/ftobjs.h (FT_LibraryRec): Do it.
Reported by Nikolaus.
2016-11-06 Werner Lemberg <wl@gnu.org>
* src/base/ftobjs.c (FT_Render_Glyph_Internal): Fix tracing.
2016-11-06 Werner Lemberg <wl@gnu.org>
[sfnt] Improve FT_LOAD_BITMAP_METRICS_ONLY for `sbix' format.
It's unavoidable to call the PNG engine, but to get the metrics it
is sufficient to read the PNG image's header only.
* src/sfnt/pngshim.c (Load_SBit_Png): Add argument to control the
allocation of the glyph slot.
* src/sfnt/pngshim.h: Updated.
* src/sfnt/ttsbit.c (tt_sbit_decoder_load_png,
tt_face_load_sbix_image, tt_face_load_sbit_image): Updated.
2016-11-06 Werner Lemberg <wl@gnu.org>
[sfnt] Speed up `sbix' lookup.
This also fixes a bug introduced in 2016-10-01 which prevents
display of embedded bitmap fonts that use the `sbix' format.
* src/sfnt/ttsbit.c (tt_face_load_sbit): Store `sbix' size and
offset also in `ebdt_size' and `ebdt_start', respectively. This
makes the test for an embedded bitmap data table succeed for this
format.
(tt_face_load_strike_metrics) <TT_SBIT_TABLE_TYPE_SBIX>: Use
`ebdt_size' and `ebdt_start'
(tt_face_load_sbix_image): Ditto.
2016-11-06 Seigo Nonaka <nona@google.com>
Werner Lemberg <wl@gnu.org>
Introduce a way of quickly retrieving (embedded) bitmap metrics.
`FT_Load_Glyph' doesn't generate a bitmap for a non-bitmap glyph
until the user calls `FT_Render_Glyph'. However, it always
allocates memory for bitmaps and copies or decodes the contents of a
bitmap glyph, which can be quite slow for PNG data.
* include/freetype/freetype.h (FT_LOAD_BITMAP_METRICS_ONLY): New
macro.
* src/base/ftobjs.c (FT_Load_Glyph): Unset FT_LOAD_RENDER if
FT_LOAD_BITMAP_METRICS_ONLY is used.
* src/sfnt/ttsbit.c (tt_sbit_decoder_alloc_bitmap,
tt_sbit_decoder_load_bitmap): Add argument to control allocation of
the glyph slot.
(tt_sbit_decoder_load_image, tt_sbit_decoder_load_compound,
tt_face_load_sbit_image): Updated.
* src/pcf/pcfdrivr.c (PCF_Glyph_Load): Quickly exit if
`FT_LOAD_BITMAP_METRICS_ONLY' is set.
* src/pfr/pfrsbit.c, src/pfr/pfrsbit.h (pfr_slot_load_bitmap): Add
argument to control allocation of the glyph slot.
* src/pfr/pfrobjs (pfr_slot_load): Updated.
* src/winfonts/winfnt.c (FNT_Load_Glyph): Ditto.
* docs/CHANGES: Updated.
2016-11-06 Werner Lemberg <wl@gnu.org>
Synchronize with gnulib (#49448).
* include/freetype/config/ftconfig.h, builds/unix/ftconfig.in,
builds/vms/ftconfig.h (FT_TYPEOF): Update code to use definition in
current version of `intprops.h'.
Other minor synchronization to reduce code differences between the
three files.
2016-11-03 Behdad Esfahbod <behdad@behdad.org>
[truetype] Clamp variation requests to valid range.
This is required by OpenType 1.8; it also avoids rounding surprises.
* src/truetype/ttgxvar.c (TT_Set_Var_Design): Clamp design coordinates
outside of the allowed range to always stay within the range instead
of producing an error.
2016-10-29 Werner Lemberg <wl@gnu.org>
[truetype] Remove clang warnings.
* src/truetype/ttinterp.h (TT_ExecContextRec): Using `FT_ULong' for
loop counter handling.
* src/truetype/ttinterp.c: Updated.
(Ins_SCANTYPE): Use signed constant.
(TT_RunIns): Ensure `num_twilight_points' is 16bit.
2016-10-27 Werner Lemberg <wl@gnu.org>
[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.
2016-10-26 Werner Lemberg <wl@gnu.org>
Add `FT_Get_{MM,Var}_Blend_Coordinates' functions.
* include/freetype/ftmm.h: Declare.
* include/freetype/internal/services/svmm.h (FT_Get_MM_Blend_Func):
New typedef.
(MultiMasters): New MM service function `get_mm_blend'.
(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.
Update all callers.
* src/base/ftmm.c (FT_Get_MM_Blend_Coordinates,
FT_Get_Var_Blend_Coordinates): Implement.
* src/truetype/ttdriver.c: Updated.
* src/truetype/ttgxvar.c (TT_Get_MM_Blend): New function to handle
`get_mm_blend' service.
* src/truetype/ttgxvar.h: Updated.
* src/type1/t1driver.c: Updated.
* src/type1/t1load.c (T1_Get_MM_Blend): New function to handle
`get_mm_blend' service.
* src/type1/t1load.h: Updated.
* docs/CHANGES: Document.
2016-10-26 Werner Lemberg <wl@gnu.org>
* src/type1/t1load.c (parse_subrs): Fix limit check.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=81
2016-10-25 Alexei Podtelezhnikov <apodtele@gmail.com>
[cff] Correct cmap format reporting (#24819).
* src/cff/cffdrivr.c (cff_get_cmap_info): Throw an error on synthetic
charmap instead of guessing its format and language.
2016-10-22 Werner Lemberg <wl@gnu.org>
[truetype] Fix SCANTYPE instruction (#49394).
* src/truetype/ttinterp.c (Ins_SCANTYPE): Only use lower 16bits.
2016-10-22 Werner Lemberg <wl@gnu.org>
[sfnt] Improve handling of invalid post 2.5 tables [#49393].
* src/sfnt/ttpost.c (load_format_25): We need at least a single
table entry.
2016-10-14 Werner Lemberg <wl@gnu.org>
[truetype] Fix handling of `cvar' table data.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53
* src/truetype/ttgxvar.c (tt_face_vary_cvt): Ignore invalid CVT
indices.
2016-10-11 Werner Lemberg <wl@gnu.org>
[psaux] Fix handling of invalid flex subrs.
Problem reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=52
* src/psaux/t1decode.c (t1_decoder_parse_charstrings)
<op_callothersubr>: Set `flex_state' after error checking.
2016-10-11 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (tt_done_blend): Fix deallocation.
2016-10-08 Werner Lemberg <wl@gnu.org>
* src/cid/cidload.c (cid_face_open): Properly propagate `error'.
2016-10-08 Werner Lemberg <wl@gnu.org>
[cid] Fix parsing of subr offsets.
Bug introduced 2016-05-16.
* src/cid/cidparse.c (cid_parser_new): Fix off-by-one error.
2016-10-01 Werner Lemberg <wl@gnu.org>
[sfnt] Disable bitmap strikes if we don't have a bitmap data table.
* src/sfnt/ttsbit.c (tt_face_load_sbit): Check whether we have
a bitmap data table.
2016-10-01 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Remove impossibility.
* src/smooth/ftgrays.c (TWorker): Rearrange fields.
(gray_convert_glyph): Remove impossible condition and clean up.
2016-09-29 Werner Lemberg <wl@gnu.org>
[pcf] Enrich family name with foundry name and glyph width info.
This is a very old patch from openSuSE (from 2006, submitted to
FreeType in 2011) that I forgot to apply.
https://build.opensuse.org/package/view_file/openSUSE:Factory/freetype2/freetype2-bitmap-foundry.patch
Prepend the foundry name plus a space to the family name. There are
many fonts just called `Fixed' which look completely different, and
which have nothing to do with each other. When selecting `Fixed' in
KDE or Gnome one gets results that appear rather random, the style
changes often if one changes the size and one cannot select some
fonts at all.
We also check whether we have `wide' characters; all put together,
we get family names like `Sony Fixed' or `Misc Fixed Wide'.
* src/pcf/pcfread.c (pcf_load_font): Implement it.
* docs/CHANGES: Document it.
2016-09-29 Werner Lemberg <wl@gnu.org>
[ftfuzzer] Speed up.
* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Don't
check for embedded bitmaps if we have a non-default instance.
2016-09-29 Werner Lemberg <wl@gnu.org>
[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 Werner Lemberg <wl@gnu.org>
[truetype] Clean up `TT_Face' structure.
* include/freetype/internal/tttypes.h (TT_FaceRec): Remove unused
fields `horz_metrics' and `vert_metrics'.
Update documentation.
* src/sfnt/sfobjs.c (sfnt_done_face): Updated.
2016-09-28 Werner Lemberg <wl@gnu.org>
More FT_ZERO usage.
* src/gxvalid/gxvcommn.c (gxv_ClassTable_validate):
s/ft_memset/FT_MEM_ZERO/.
* src/psaux/t1decode.c (t1_decoder_parse_charstrings):
s/ft_memset/FT_ARRAY_ZERO/.
* src/raster/ftraster.c (FT_ZERO): Define.
(ft_black_new): Use it.
* src/raster/ftrend1.c (ft_raster1_get_cbox):
s/FT_MEM_ZERO/FT_ZERO/.
* src/smooth/ftgrays.c (FT_ZERO): Define.
(gray_raster_new): Use it.
* src/smooth/ftsmooth.c (ft_smooth_get_cbox):
s/FT_MEM_ZERO/FT_ZERO/.
2016-09-28 Werner Lemberg <wl@gnu.org>
*/*: s/FT_MEM_ZERO/FT_ZERO/ where appropriate.
2016-09-27 Werner Lemberg <wl@gnu.org>
[truetype] Trace number of executed opcodes.
* src/truetype/ttinterp.c (TT_RunIns): Implement it.
2016-09-27 Werner Lemberg <wl@gnu.org>
[truetype] Speed up `TT_Load_Glyph'.
This avoids additional calls to `tt_face_lookup_table' for the
`glyf' table, which can be expensive.
* include/freetype/internal/tttypes.h (TT_LoaderRec): Move
`glyf_offset' field to ...
(TT_FaceRec): ... this structure.
* src/truetype/ttgload.c (load_truetype_glyph): Updated.
(tt_loader_init): Move initialization of `glyf_offset' to ...
* src/truetype/ttpload.c (tt_face_load_loca): ... this function.
2016-09-27 Werner Lemberg <wl@gnu.org>
[truetype] Introduce dynamic limits for some bytecode opcodes.
This speeds up FreeType's handling of malformed fonts.
* src/truetype/ttinterp.c (TT_RunIns): Set up limits for the number
of twilight points, the total number of negative jumps, and the
total number of loops in LOOPCALL opcodes. The values are based on
the number of points and entries in the CVT table.
(Ins_JMPR): Test negative jump counter.
(Ins_LOOPCALL): Test loopcall counter.
* src/truetype/ttinterp.h (TT_ExecContext): Updated.
* docs/CHANGES: Updated.
2016-09-25 Werner Lemberg <wl@gnu.org>
[truetype] Sanitize only last entry of `loca' table.
Without this patch, a loca sequence like `0 100000 0 100000 ...',
where value 100000 is larger than the `glyf' table size, makes
FreeType handle the whole `glyf' table as a single glyph again and
again, which is certainly invalid (and can be very slow, too).
* src/truetype/ttpload.c (tt_face_get_location): Implement.
Improve tracing messages.
2016-09-25 Werner Lemberg <wl@gnu.org>
* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Fix typo.
2016-09-24 Werner Lemberg <wl@gnu.org>
[autofit] Tracing fixes.
* src/autofit/afmodule.c (af_autofitter_load_glyph): Call dumping
functions only if we actually do tracing.
2016-09-22 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Reduce divisions in the line renderer.
We don't need some divisions if a line segments stays within a single
row or a single column of pixels.
* src/smooth/ftgrays.c (gray_render_line) [FT_LONG64]: Make divisions
conditional.
2016-09-15 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_sweep): Remove check for empty table.
2016-09-14 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Another tiny speed-up.
* src/smooth/ftgrays.c (gray_find_cell): Merge into...
(gray_record_cell): ... this function.
2016-09-11 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_{find,set}_cell): Remove dubious code.
2016-09-11 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Fix valgrind warning and reoptimize.
The algorithm calls `gray_set_cell' at the start of each new contour
or when the contours cross the cell boundaries. Double-checking for
that is wasteful.
* src/smooth/ftgrays.c (gray_set_cell): Remove check for a new cell.
(gray_convert_glyph): Remove initialization introduced by 44b172e88.
2016-09-10 Werner Lemberg <wl@gnu.org>
[sfnt] Fix previous commit.
Problems reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40
We now map the strike index right before accessing the physical
data, not earlier.
* src/sfnt/sfobjs.c (sfnt_load_face): Set `face->sbit_strike_map'
after creating the map so that...
* src/sfnt/ttsbit.c (tt_face_load_strike_metrics): ... this function
can be used before and after setting up `sbit_strike_map'.
(tt_face_set_sbit_strike): Revert change.
(tt_sbit_decoder_init, tt_face_load_sbix_image): Map strike index.
* src/truetype/ttdriver.c (tt_size_select): Revert change.
2016-09-09 Werner Lemberg <wl@gnu.org>
[ftfuzzer] Minor improvements.
* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Ignore
invalid strikes.
Use better values for call to `FT_Set_Char_Size'.
2016-09-09 Werner Lemberg <wl@gnu.org>
[sfnt] Don't provide (completely) broken strike data.
FreeType tries to sanitize strike header data; we now reject
completely broken ones.
* include/freetype/internal/tttypes.h (TT_FaceRec): New
`sbit_strike_map' array pointer.
* src/base/ftobjs.c (FT_Match_Size): Reject matches where either
width or height would be zero.
Add tracing message in case of error.
* src/sfnt/sfobjs.c (sfnt_load_face): Populate `sbit_strike_map',
only using (more or less) valid strike header data for
FT_Face's `available_sizes' array.
(sfnt_done_face): Updated.
* src/sfnt/ttsbit.c (tt_face_set_sbit_strike): Use
`sbit_strike_map'.
(tt_face_load_strike_metrics): Improve tracing.
* src/truetype/ttdriver.c (tt_size_select): Use `sbit_strike_map'.
2016-09-08 Werner Lemberg <wl@gnu.org>
* Version 2.7 released.
=======================
Tag sources with `VER-2-7'.
* docs/VERSION.TXT: Add entry for version 2.7.
* README, Jamfile (RefDoc), builds/windows/vc2005/freetype.vcproj,
builds/windows/vc2005/index.html,
builds/windows/vc2008/freetype.vcproj,
builds/windows/vc2008/index.html,
builds/windows/vc2010/freetype.vcxproj,
builds/windows/vc2010/index.html,
builds/windows/visualc/freetype.dsp,
builds/windows/visualc/freetype.vcproj,
builds/windows/visualc/index.html,
builds/windows/visualce/freetype.dsp,
builds/windows/visualce/freetype.vcproj,
builds/windows/visualce/index.html,
builds/wince/vc2005-ce/freetype.vcproj,
builds/wince/vc2005-ce/index.html,
builds/wince/vc2008-ce/freetype.vcproj,
builds/wince/vc2008-ce/index.html: s/2.6.5/2.7/, s/265/27/.
* include/freetype/freetype.h (FREETYPE_MINOR): Set to 7.
(FREETYPE_PATCH): Set to 0.
* builds/unix/configure.raw (version_info): Set to 18:6:12.
* CMakeLists.txt (VERSION_MINOR): Set to 7.
(VERSION_PATCH): Set to 0.
* docs/CHANGES: Updated.
2016-09-08 Werner Lemberg <wl@gnu.org>
* src/truetype/ttinterp.c: Include `ttgxvar.h'.
This fixes the `multi' build.
2016-09-08 Werner Lemberg <wl@gnu.org>
[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.
2016-09-07 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_hline): Microptimize.
2016-09-06 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Operate in absolute bitmap coordinates.
Simpler bitmap addressing improves performance by 1.5%.
* src/smooth/ftgrays.c (gray_TWorker): Remove count fields.
(gray_dump_cells, gray_find_cell, gray_set_cell, gray_hline,
gray_sweep, gray_convert_glyph, gray_raster_render): Updated.
2016-09-06 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Improve contour start (take 2).
* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
instead of...
(gray_start_cell): ... this function, which is removed.
(gray_convert_glyph): Make initial y-coordinate invalid.
2016-09-06 Werner Lemberg <wl@gnu.org>
[type1] MM fonts support exactly zero named instances (#48748).
* src/type1/t1load.c (T1_Get_MM_Var): Set `num_namedstyles' to zero.
2016-09-06 Jonathan Kew <jfkthame@gmail.com>
[cff] Fix uninitialized memory.
Problem reported as
https://bugzilla.mozilla.org/show_bug.cgi?id=1270288
* src/cff/cf2interp.c (cf2_interpT2CharString): Initialize `storage'
array to handle a `get' opcode without a previous `put'.
2016-09-05 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_move_to, gray_start_cell): Revert.
2016-09-05 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Improve contour start.
* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
instead of...
(gray_start_cell): ... this function, which is removed.
2016-09-05 Werner Lemberg <wl@gnu.org>
[cff] Fix memory initialization.
* src/cff/cf2stack.c (cf2_stack_init): Use `FT_NEW'. The `Q'
variants of FreeType's memory allocation macros don't do zeroing.
2016-09-05 Werner Lemberg <wl@gnu.org>
[ftrandom] Minor improvements.
* src/tools/ftrandom/ftrandom.c (_XOPEN_SOURCE): New macro, set to
500.
* src/tools/ftrandom/Makefile (CFLAGS): Split off include
directories to ...
(INCLUDES): ... this new variable.
(LDFLAGS): New variable.
(ftrandom.o, ftrandom): Updated.
2016-09-05 Werner Lemberg <wl@gnu.org>
[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.
2016-09-04 Werner Lemberg <wl@gnu.org>
[ftrandom] Improve Makefile.
It now supports both a normal build (`./configure && make') and a
development build (`make devel').
* src/tools/ftrandom/Makefile (VPATH): Set it so that
`libfreetype.a' gets searched in both `objs' (for the development
build) and `objs/.libs' (for a normal build which uses libtool).
(LIBS): Add missing libraries.
(ftrandom.o): New rule.
(ftrandom): Use automatic variables.
2016-09-03 Werner Lemberg <wl@gnu.org>
[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 Werner Lemberg <wl@gnu.org>
[ftrandom] Various fixes.
* src/tools/ftrandom/ftrandom.c (GOOD_FONTS_DIR): Provide better
default.
(error_fraction): Make it of type `double' to work as advertized –
this was completely broken.
Update all related code.
(error_count, fcnt): Make it unsigned to fix compiler warnings.
Update all related code.
(fontlist): Change `len' member to `long' to fix compiler warnings.
(FT_MoveTo, FT_LineTo, FT_ConicTo, FT_CubicTo, abort_test): Tag
unused variables.
(TestFace, FindFonts, copyfont, do_test): Fix compiler warnings.
(ExecuteTest): Ditto.
Call `FT_Done_FreeType'.
(getErrorCnt): Replace `ceil' with an ordinary cast to `unsigned
int'.
(usage): Improve output.
(main): Fix compiler warnings.
* src/tools/ftrandom/README: Updated.
2016-09-03 Werner Lemberg <wl@gnu.org>
[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 Werner Lemberg <wl@gnu.org>
[cff] Avoid null pointer passed to FT_MEM_COPY (#48984).
* src/cff/cffload.c (cff_index_get_name): Check `byte_len'.
2016-09-02 Werner Lemberg <wl@gnu.org>
[unix] Enable 64bit support in file system access (#48962).
* builds/unix/configure.raw: Call `AC_SYS_LARGEFILE'.
2016-09-02 Werner Lemberg <wl@gnu.org>
[sfnt] Avoid left shift of negative value (#48980).
* src/sfnt/ttsbit.c (tt_sbit_decoder_load_bit_aligned): Use unsigned
constant.
2016-09-02 Werner Lemberg <wl@gnu.org>
* src/smooth/ftgrays.c (gray_hline): Fix clang compiler warnings.
2016-09-02 Werner Lemberg <wl@gnu.org>
Some preparations for the next release.
* include/freetype/config/ftoption.h
(TT_CONFIG_OPTION_SUBPIXEL_HINTING): Enable.
* docs/CHANGES: Updated.
2016-09-01 Alexei Podtelezhnikov <apodtele@gmail.com>
[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.
2016-08-30 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Streamline pixmap drawing a bit more.
Zero coverage is unlikely (1 out of 256) to warrant checking. This
gives 0.5% speed improvement in rendering simple glyphs.
* src/smooth/ftgrays.c (gray_hline, gray_render_span): Remove checks.
2016-08-29 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Streamline pixmap drawing.
This gives 2% speed improvement in rendering simple glyphs.
* src/smooth/ftgrays.c (TPixmap): Reduced pixmap descriptor with a
pointer to its bottom-left and pitch to be used in...
(gray_TWorker): ... here.
(gray_render_span): Move pixmap flow check from here...
(gray_raster_render): .. to here.
2016-08-27 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Reduce stack of band boundaries.
* src/smooth/ftgrays.c (gray_TBand): Removed.
(gray_convert_glyph): Updated to stack band boundaries concisely.
2016-08-26 Werner Lemberg <wl@gnu.org>
* src/cid/cidload.c (cid_face_open): Improve handling of `SDBytes'.
2016-08-26 Werner Lemberg <wl@gnu.org>
[cid] Fix commit from 2016-05-16.
* src/cid/cidparse.c (cid_parser_new): Fix off-by-one errors.
2016-08-26 Werner Lemberg <wl@gnu.org>
[sfnt] Cache offset and size to bitmap data table.
This commit avoids `EBDT' and friends being looked up again and
again while loading a single embedded bitmap.
* include/freetype/internal/tttypes.h (TT_FaceRec)
[TT_CONFIG_OPTION_EMBEDDED_BITMAPS]: New fields `ebdt_start' and
`ebdt_size'.
* src/sfnt/ttsbit.c (tt_sbit_decoder_init): Move table lookup to ...
(tt_face_load_sbit): ... this function; also store the table size
and offset.
2016-08-26 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_raster_render): Minor tweaks.
2016-08-26 Werner Lemberg <wl@gnu.org>
[type1] Fix heap buffer overflow.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36
* src/type1/t1load.c (parse_charstrings): Reject fonts that don't
contain glyph names.
2016-08-25 Werner Lemberg <wl@gnu.org>
[sfnt] Fix previous commit (#48901).
* src/sfnt/ttcmap.c (tt_cmap4_char_map_binary): Thinkos.
2016-08-25 Werner Lemberg <wl@gnu.org>
[sfnt] Speed up handling of invalid format 4 cmaps.
* src/sfnt/ttcmap.c (tt_cmap4_next, tt_cmap4_char_map_binary): Add
tests for `num_glyph' from `tt_cmap4_char_map_linear'.
2016-08-25 Werner Lemberg <wl@gnu.org>
* include/freetype/internal/ftdriver.h: Remove unused typedefs.
2016-08-22 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Simplify span rendering.
This removes unnecessary complexity of span merging and buffering.
Instead, the spans are rendered as they come, speeding up the
rendering by about 5% as a result.
* src/smooth/ftgrays.c [FT_MAX_GRAY_SPANS]: Macro removed.
(gray_TWorker): Remove span buffer and related fields.
(gray_sweep, gray_hline): Updated.
* include/freetype/ftimage.h: Remove documentation note about
`FT_MAX_GRAY_SPANS', which was never in `ftoption.h' and is now gone.
2016-08-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix `MPS' instruction.
According to Greg Hitchcock, MPS in DWrite really returns the point
size.
* src/truetype/ttobjs.h (TT_SizeRec): Add `point_size' member.
* src/truetype/ttdriver.c (tt_size_request): Set `point_size'.
* src/truetype/ttinterp.h (TT_ExecContextRec): Add `pointSize'
member.
* src/truetype/ttinterp.c (TT_Load_Context): Updated.
(Ins_MPS): Fix instruction.
2016-08-16 Werner Lemberg <wl@gnu.org>
[lzw] Optimize last commit.
* src/lzw/ftzopen.c (ft_lzwstate_get_code): Move check into
conditional clause.
2016-08-16 Werner Lemberg <wl@gnu.org>
[lzw] Avoid invalid left shift.
Reported as
https://bugzilla.mozilla.org/show_bug.cgi?id=1295366
* src/lzw/ftzopen.c (ft_lzwstate_get_code): Limit `num_bits'.
2016-08-16 Werner Lemberg <wl@gnu.org>
[lzw] Avoid buffer overrun.
Reported as
https://bugzilla.mozilla.org/show_bug.cgi?id=1273283
* src/lzw/ftzopen.c (ft_lzwstate_refill): Ensure `buf_size' doesn't
underflow.
2016-08-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix compiler warning.
* src/truetype/ttgload.c (load_truetype_glyph): Add cast.
2016-08-13 Werner Lemberg <wl@gnu.org>
[winfonts] Avoid zero bitmap width and height.
Reported as
https://bugzilla.mozilla.org/show_bug.cgi?id=1272173
* src/winfonts/winfnt.c (FNT_Face_Init): Check zero pixel height.
(FNT_Load_Glyph): Check for zero pitch.
2016-08-11 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/truetype/ttinterp.c (Pop_Push_Count): Revert changes.
2016-08-11 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/truetype/ttinterp.c (TT_RunIns): Minor and formatting.
2016-08-11 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/truetype/ttinterp.c (Pop_Push_Count): Fix some entries.
2016-08-10 Peter Klotz <Peter.Klotz@ith-icoserve.com>
* src/smooth/ftgrays.c (gray_hline): Fix uninitialized access.
2016-08-10 Werner Lemberg <wl@gnu.org>
[sfnt] Use correct type for `italicAngle' field (#48732).
* src/sfnt/ttload.c (tt_face_load_post): Fix types.
2016-08-06 Jon Spencer <jon@jonspencer.ca>
[sfnt] Fix `FT_Get_Advance' for bitmap strikes.
`FT_Get_Advance' returns 0 for bitmap fonts. It first gets the
advance value from the font table and then scales it by the
`font->size->metrics->x_scale' field. But `FT_Select_Size' doesn't
set that value for bitmap fonts and the advance gets scaled to zero.
Taken from
https://github.com/behdad/harfbuzz/issues/252
* src/sfnt/ttsbit.c (tt_face_load_strike_metrics)
<TT_SBIT_TABLE_TYPE_EBLC>: Set scale values.
2016-08-06 Behdad Esfahbod <behdad@behdad.org>
[truetype] Fix GX variation handling of composites.
* src/truetype/ttgload.c (load_truetype_glyph)
[TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Check `ARGS_ARE_XY_VALUES' flag.
2016-08-05 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Minor refactoring.
* src/smooth/ftgrays.c (gray_render_scanline, gray_render_line):
Updated.
2016-07-29 Werner Lemberg <wl@gnu.org>
[sfnt, truetype] Don't abort on invalid `maxComponentDepth'.
Since 2016-05-16 we detect infinite recursion directly.
* src/sfnt/ttload.c (tt_face_load_maxp): Don't adjust
`maxComponentDepth'.
* src/truetype/ttgload.c (load_truetype_glyph): Don't abort if
`maxComponentDepth' is not valid. Instead, simply adjust its value
and emit a tracing message.
2016-07-26 Werner Lemberg <wl@gnu.org>
* src/autofit/aflatin.c (af_latin_metrics_scale_dim): Minor.
No functional change.
2016-07-22 Hin-Tak Leung <htl10@users.sourceforge.net>
[truetype] Record the end of IDEFs.
To match the logic in FDEF. The value of the end is only used for
bound-checking in `Ins_JMPR', so it may not have been obvious that
it was not recorded. Tested (as part of Font Validator 2.0) all the
fonts on Fedora and did not see any change.
* src/truetype/ttinterp.c (Ins_IDEF): Updated.
2016-07-19 Werner Lemberg <wl@gnu.org>
[truetype] Sanitizer fix, second try.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Fix boundary
tests and use only one slot more.
2016-07-19 Werner Lemberg <wl@gnu.org>
[truetype] Sanitizer fix.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Increase array
to fix nested loops.
2016-07-18 Werner Lemberg <wl@gnu.org>
[truetype] Make GETDATA work only for GX fonts.
* src/truetype/ttinterp.c (opcode_name): Updated.
(Ins_GETDATA): Only define for `TT_CONFIG_OPTION_GX_VAR_SUPPORT'.
(TT_RunIns): Updated.
2016-07-17 Werner Lemberg <wl@gnu.org>
[truetype] Add support for Apple's
GETDATA[], opcode 0x92
bytecode instruction. It always returns 17, and we have absolutely
no idea what it is good for...
* src/truetype/ttinterp.c (Pop_Push_Count, opcode_name): Updated.
(Ins_GETDATA): New function.
(TT_RunIns): Add it.
2016-07-16 Werner Lemberg <wl@gnu.org>
[truetype] Add bytecode support for GX variation fonts.
This commit implements undocumented (but confirmed) stuff from
Apple's old bytecode engine.
GETVARIATION[], opcode 0x91
This opcode pushes normalized variation coordinates for all axes
onto the stack (in 2.14 format). Coordinate of first axis gets
pushed first.
GETINFO[], selector bit 3
If GX variation support is enabled, bit 10 of the result is set
to 1.
* src/truetype/ttinterp.c: Include FT_MULTIPLE_MASTERS_H.
(opcode_name) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Updated.
(Ins_GETINFO) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Handle selector
bit 3, checking support for variation glyph hinting.
(Ins_GETVARIATION) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New function
to implement opcode 0x91.
(TT_RunIns) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Handle opcode 0x91.
2016-07-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix GETINFO bytecode instruction.
* src/truetype/ttinterp.c (Ins_GETINFO): Fix return value for
stretching information.
2016-07-16 Behdad Esfahbod <behdad@behdad.org>
[truetype] Make all glyphs in `Zycon' GX font work.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Fix boundary
tests.
2016-07-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix GX delta tracing.
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Trace
relative point movements.
2016-07-16 Behdad Esfahbod <behdad@behdad.org>
[truetype] More fixes for GX.
This finally fixes the rendering of the cyclist and the lizard in
the `Zycon' font.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): `first' point
index is always cumulative.
(tt_handle_deltas): Rename to...
(tt_interpolate_deltas): ... This.
Add new parameter for output point array.
Update caller.
(TT_Vary_Apply_Glyph_Deltas): Add `points_out' array; it now holds
the intermediate results of `tt_interpolate_deltas' that are to be
added to `outline->points'.
2016-07-15 Werner Lemberg <wl@gnu.org>
* src/autofit/aflatin.c (af_latin_hints_compute_segments): Thinko.
`max_pos' is always larger than `min_pos' so `FT_ABS' is not needed.
Reported by Alexei.
2016-07-16 Nikolaus Waxweiler <madigens@gmail.com>
* src/truetype/ttinterp.c (Ins_MIRP): Fix copy-and-paste error.
Problem reported by Hin-Tak Leung.
2016-07-15 Werner Lemberg <wl@gnu.org>
[autofit] Update and improve segment and edge tracing.
* src/autofit/afhints.c (af_glyph_hints_dump_segments): Trace
`delta' also.
Don't show first point of segment as a replacement for `pos'; this
is (a) misleading, since the difference to `pos' can be almost
arbitrarily large in corner cases, and (b) it is better to have all
segment data in font units instead of a single value given in output
space coordinates.
Improve layout.
(af_glyph_hints_dump_edges): Show px->units and units->px conversion
values for convenience.
Improve layout.
2016-07-15 Werner Lemberg <wl@gnu.org>
[autofit] For edges, reject segments wider than 1px (#41334).
* src/autofit/afhints.h (AF_SegmentRec): New member `delta'.
* src/autofit/aflatin.c (af_latin_hints_compute_segments): Compute
`delta'.
(af_latin_hints_compute_edges): Reject segments with a delta larger
than 0.5px.
2016-07-14 Werner Lemberg <wl@gnu.org>
* include/freetype/freetype.h (FT_IS_NAMED_INSTANCE): New macro.
2016-07-14 Werner Lemberg <wl@gnu.org>
[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 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Fix tracing.
2016-07-14 Behdad Esfahbod <behdad@behdad.org>
[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.
----------------------------------------------------------------------------
Copyright 2016 by
David Turner, Robert Wilhelm, and Werner Lemberg.
This file is part of the FreeType project, and may only be used, modified,
and distributed under the terms of the FreeType project license,
LICENSE.TXT. By continuing to use, modify, or distribute this file you
indicate that you have read the license and understand and accept it
fully.
Local Variables:
version-control: never
coding: utf-8
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