Commit Graph

3859 Commits

Author SHA1 Message Date
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