* 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.
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.
* src/base/ftobjs.c (open_face_PS_from_sfnt_stream):
`ft_lookup_PS_in_sfnt_stream' returns offset and and length from
user supplied data. Use of this these values must be checked.
Both the native CFF hinter and the auto-hinter now have a very
similar rendering style.
* include/freetype/freetype.h: Mention that FT_LOAD_TARGET_LIGHT no
longer implies FT_LOAD_FORCE_AUTOHINT.
* include/freetype/ftmodapi.h (FT_MODULE_DRIVER_HINTS_LIGHTLY): New
macro.
* include/freetype/internal/ftobjs.h (FT_DRIVER_HINTS_LIGHTLY): New
macro.
* src/cff/cffdrivr.c (cff_driver_class): Use it.
* src/base/ftobjs.c (FT_Load_Glyph): Update auto-hinter selection
logic.
open_face_from_buffer() frees passed buffer if valid font
is not found. But if copying to the buffer is failed,
the allocated buffer should be freed within the caller.
* src/base/ftobjs.c (open_face_PS_from_sfnt_stream): Free
the buffer `sfnt_ps' if an error caused before calling
open_face_from_buffer().
(Mac_Read_sfnt_Resource): Free the buffer `sfnt_data' if
an error caused before calling open_face_from_buffer();
* src/base/ftobjs.c (FT_Get_Char_Index): Don't return out-of-bounds
glyph indices.
(FT_Get_First_Char): Updated.
* src/sfnt/ttcmap.c (tt_cmap6_char_next): Don't return character
codes greater than 0xFFFF.
(tt_cmap8_char_index): Avoid integer overflow in computation of
glyph index.
(tt_cmap8_char_next): Avoid integer overflows in computation of
both next character code and glyph index.
(tt_cmap10_char_index): Fix unsigned integer logic.
(tt_cmap10_char_next): Avoid integer overflow in computation of
next character code.
(tt_cmap12_next): Avoid integer overflows in computation of both
next character code and glyph index.
(tt_cmap12_char_map_binary): Ditto.
(tt_cmap12_char_next): Simplify.
(tt_cmap13_char_map_binary): Avoid integer overflow in computation
of next character code.
(tt_cmap13_char_next): Simplify.
* src/base/ftbase.h (FT_MAC_RFORK_MAX_LEN): Maximum length
of the resource fork for Mac OS. The resource fork larger
than 16 MB can be written but could not be handled
correctly, at least in Carbon routine.
See https://support.microsoft.com/en-us/kb/130437
* src/base/ftobjs.c (Mac_Read_POST_Resource): No need `0x'
for `%p' formatter.
* src/base/ftbase.c (Mac_Read_POST_Resource): Check the
fragment and total size of the concatenated POST resource
before buffer allocation.
(Mac_Read_sfnt_Resource): Check the declared size of
sfnt resource before buffer allocation.
* src/base/ftmac.c (read_lwfn, FT_New_Face_From_SFNT):
Check the total resource size before buffer allocation.
For functions querying a face, bits 16-30 of the face index can hold
the named instance index if we have a GX font. The indices start
with value 1; value 0 indicates font access without GX variation
data.
* include/freetype/freetype.h (FT_FaceRec): Update documentation.
* include/freetype/internal/sfnt.h: Ditto.
* src/sfnt/sfobjs.c (sfnt_init_face)
[TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Get number of named instances and
do argument checks.
(sfnt_load_face): Updated.
* src/truetype/ttobjs.c (tt_face_init)
[TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Use named instance, overwriting
the style name.
* src/base/ftobjs.c (open_face_from_buffer,
open_face_PS_from_sfnt_stream): Updated.
* src/bdf/bdfdrivr.c (BDF_Face_Init): Updated.
* src/cff/cffload.c (cff_font_load): Updated.
* src/cff/cffobjs.c (cff_face_init): Make function exit early for
pure CFF fonts if `font_index < 0'.
Updated.
* src/cid/cidobjs.c (cid_face_init): Updated.
* src/pcf/pcfdrivr.c (PCF_Face_Init): Updated.
* src/pfr/pfrobjs.c (pfr_face_init): Updated.
* src/type1/t1objs.c (T1_Face_Init): Updated.
* src/type42/t42objs.c (T42_Face_Init): Updated.
* src/winfonts/winfnt.c (fnt_face_get_dll_font, FNT_Face_Init):
Updated.
* docs/CHANGES: Updated.
It's unused after the following commits:
[raster] Allocate render pool for mono rasterizer on the stack.
[raster] Remove 5-level gray AA mode from monochrome rasterizer.
The value of FT_RENDER_POOL_SIZE still serves the purpose it used to
serve, which is, to adjust the pool size. But the pool is now
allocated on the stack on demand.
* src/base/ftobjs.c (FT_New_Library, FT_Done_Library): Implement.
Instead of keeping `library->renderers' in a MRU order, just leave
it as-is. The MRU machinery wasn't thread-safe.
With this patch, rasterizing glyphs from different faces from
different threads doesn't fail choosing rasterizer
(FT_Err_Cannot_Render_Glyph).
Easiest to see that crash was to add a `printf' (or otherwise let
thread yield in FT_Throw with debugging enabled).
* src/base/ftobjs.c (FT_Render_Glyph_Internal), src/base/ftoutln.c
(FT_Outline_Render): Don't call `FT_Set_Renderer'.
`API functions' are functions tagged with `FT_EXPORT_DEF'.
Besides trivial fixes, the following changes are included, too.
* src/base/ftbdf.c (FT_Get_BDF_Charset_ID, FT_Get_BDF_Property): Set
error code if no service is available.
* src/base/ftinit.c (FT_Done_FreeType): Change return value for
invalid `library' parameter to `Invalid_Library_Handle'.
* src/base/ftobjs.c (FT_New_Size): Change return value for invalid
`asize' parameter to `Invalid_Argument'.
* src/base/ftoutln.c (FT_Outline_Copy): Change return value for
invalid `source' and `target' parameters to `Invalid_Outline'.
(FT_Outline_Done_Internal): Change return value for invalid
`outline' parameter to `Invalid_Outline'.
The functions in this patch *do* return non-trivial errors that must
be taken care of.
* src/autofit/afloader.c (af_loader_load_g), src/base/ftobjs.c
(FT_Render_Glyph_Internal), src/base/ftoutln.c (FT_Outline_Render),
src/cff/cffgload.c (cff_decoder_parse_charstrings) <cff_op_endchar>,
src/psaux/psobjs.c (ps_parser_load_field_table), src/psaux/t1decode
(t1_decoder_parse_charstrings) <op_endchar>, src/truetype/ttgload.c
(load_truetype_glyph <subglyph loop>, tt_loader_init,
TT_Load_Glyph), src/truetype/ttgxvar.c (TT_Set_MM_Blend),
src/truetype/ttobjs.c (tt_size_run_fpgm, tt_size_run_prep): Do it.
