Commit Graph

4890 Commits

Author SHA1 Message Date
Werner Lemberg 551bd3a90e More nullptr offset UBSan warnings (#57331, #57347).
* src/autofit/afcjk.c (af_cjk_hints_compute_segments),
src/psaux/psft.c (cf2_getSeacComponent), src/truetype/ttinterp.c
(Ins_UNKNOWN): Use `FT_OFFSET'.
2019-12-03 11:52:48 +01:00
Dominik Röttsches 4270e9f324 Avoid more nullptr offset UBSan warnings (#57316).
* src/base/ftoutln.c (FT_Outline_Transform): Bail on empty points.
* src/cff/cffload.c (cff_subfont_load): Use `FT_OFFSET'.
* src/psaux/psft.c (cf2_decoder_parse_substrings): Early out if
`charstring_base' or `charstring_len' are null.
* src/sfnt/ttload.c (tt_face_load_name): Use `FT_OFFSET'.
2019-11-29 06:26:18 +01:00
John Stracke d4f9c24989 [base] Really fix #57194.
Apply accidentally missed second part of patch.

* src/base/ftgloadr.c (FT_GlyphLoader_CheckPoints): Call
`FT_GlyphLoader_CreateExtra'.
2019-11-23 11:25:28 +01:00
Werner Lemberg 9df460b632 [truetype] Avoid sanitizer warning (#57289).
* src/truetype/ttpload.c (tt_face_get_device_metrics): Use
`FT_OFFSET'.
2019-11-23 11:09:40 +01:00
Armin Hasitzka c67b9a1c5b [truetype] Fix integer overflow (#57287).
* src/truetype/ttgload.c (compute_glyph_metrics): Use `SUB_LONG'.
2019-11-23 11:01:18 +01:00
Ben Wagner 3cb7b3f7cb [sfnt] Avoid sanitizer warning (#57286).
* src/sfnt/ttcmap.c (tt_face_build_cmaps): Avoid possible `NULL +
offset' computation.
Tag `table' as `const'.
2019-11-23 10:54:51 +01:00
John Stracke 2d1d60aac6 [base] Fix `NULL + offset' sanitizer warnings (#57194).
* src/base/ftgloadr.c (FT_GlyphLoader_Adjust_Points,
FT_GlyphLoader_Adjust_Subglyphs): Use `FT_OFFSET'.
(FT_GlyphLoader_CreateExtra): Add short cut if some values are zero.
2019-11-23 10:42:04 +01:00
Werner Lemberg 26d0f579c0 * include/freetype/internal/ftmemory.h (FT_OFFSET): New macro.
Use this for `base + offset' pointer calculations where `base' can
be NULL (triggering a sanitizer warning even if the resulting
pointer gets never dereferenced since it is undefined behaviour
in C).

Suggested by Ben Wagner.
2019-11-23 10:28:37 +01:00
Ben Wagner 9b0179597e [sfnt] Ensure OTTO fonts have tables (#57285).
* src/sfnt/ttload.c (tt_face_load_font_dir): Add test.
2019-11-23 10:07:48 +01:00
Behdad Esfahbod 07c8d8bbdb Minor fixes for recent compilers.
* src/gzip/infutil.h (inflate_mask): Add `const'.

* src/autofit/aflatin2.c: Include `ft2build.h'.
2019-11-23 10:00:02 +01:00
Nikolaus Waxweiler 3aaae716b2 CMakeLists.txt: minor doc additions, compile builds/unix/ftsystem.c on UNIX 2019-11-07 23:39:41 +00:00
Werner Lemberg b75031a26e * src/sfnt/sfwoff2.c (woff2_open_font): Check `num_fonts' for TTCs.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18494
2019-10-25 21:29:13 +02:00
Werner Lemberg 3b8bc65c50 * src/sfnt/sfwoff2.c (woff2_open_font): Avoid undefined shift.
Also improve tracing.

Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18390
2019-10-22 08:07:05 +02:00
Alexei Podtelezhnikov 90a30f154a * src/sfnt/pngshim.c (premultiply_data): Optimize for __SSE__ only. 2019-10-10 22:04:50 -04:00
Werner Lemberg 545a481a74 * src/sfnt/sfwoff2.c (reconstruct_glyf): Check `triplet_size'.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18108
2019-10-10 13:11:06 +02:00
John Tytgat 1e9229f0fc [cff] Fix FT_FACE_FLAG_GLYPH_NAMES for CFF2 based fonts (#57023).
* src/cff/cffobjs.c (cff_face_init): Don't set FT_FACE_FLAG_GLYPH_NAMES
for CFF2 based fonts.
2019-10-09 15:37:19 +02:00
Werner Lemberg 5a1a79c0e8 [woff2] Fix SFNT table checks.
Also reduce number of SFNT table lookups.

Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18065

* include/freetype/internal/wofftypes.h (WOFF2_InfoRec): Add fields
`glyf_table', `loca_table', and `head_table'.

* src/sfnt/sfwoff2.c (reconstruct_glyf): Update signature.
Use table pointers in `info' parameter.
(get_x_mins): Check `maxp_table'
Use table pointers in `info' parameter.
(reconstruct_font):  Use and set table pointers in `info' parameter.
Fix check for `glyf' and `loca' tables.
Update call to `reconstruct_glyf'.
(woff2_open_font): Updated.
2019-10-08 11:12:18 +02:00
Werner Lemberg 1167bff3e9 * src/sfnt/sfwoff2 (reconstruct_glyf): Fix reallocation.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18046
2019-10-06 23:22:34 +02:00
Werner Lemberg 0fcf486e0d Improve memory debugging.
* include/freetype/internal/ftmemory.h (FT_MEM_FREE): Use
`FT_DEBUG_INNER' to set source code file name and line.

* src/base/ftdbgmem.c (ft_mem_table_remove): Better formatting of
tracing message.
2019-10-06 21:12:42 +02:00
Werner Lemberg 1f4e5bcb19 * src/sfnt/sfwoff2 (reconstruct_font): Fix reallocation.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17966
2019-10-03 21:07:16 +02:00
Alexei Podtelezhnikov c912690d22 * src/base/ftstroke.c (ft_stroker_inside): Speed up. 2019-09-30 22:45:34 -04:00
Werner Lemberg 94815d6efa * src/sfnt/sfwoff2 (woff2_open_font): Initialize `woff2.ttc_fonts'.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17804
2019-10-01 00:15:25 +02:00
Werner Lemberg 839a023619 * src/sfnt/sfwoff2.c (reconstruct_font): Fix memory leak.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17812
2019-09-30 07:41:57 +02:00
Werner Lemberg 12696dcf9b [woff2] Reject fonts without `head' table.
Also fix memory deallocation in case of error.

`head' problem reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17820

* src/sfnt/sfwoff2.c (reconstruct_glyf): Don't use `stream_close'.
Abort if `head_table' is NULL.
Don't free `transformed_buf' in case of error.
(woff2_open_font): Don't set `uncompressed_buf' to NULL.
2019-09-30 07:27:55 +02:00
Werner Lemberg ba06adafcd [woff2] Fix compiler warnings.
Problem reported by Alexei.

* src/sfnt/sfwoff2.c (reconstruct_glyf): Initialize `x_min'.
(reconstruct_font): Initialize `num_hmetrics'.
(woff2_open_font): Initialize `info'.
2019-09-29 13:29:21 +02:00
Werner Lemberg c37a501458 * src/sfnt/sfwoff2.c (woff2_open_font): Fix sanity check.
Correct thinkos in patch from 2019-09-01.
2019-09-28 07:42:34 +02:00
Werner Lemberg 2bf603bde6 [woff2] Fix memory leaks.
One of them reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17766

* src/sfnt/sfwoff2.c (woff2_open_font): Free `info->x_mins' and
`woff2->ttc_fonts'.

(reconstruct_glyf): Initialize `info->x_mins'.
2019-09-28 07:38:16 +02:00
Alexei Podtelezhnikov b39576f984 * src/base/ftstroke.c (ft_stroker_cap): Speed up caps. 2019-09-27 19:18:49 -04:00
Alexei Podtelezhnikov 432efa25b3 * src/base/ftstroke.c (ft_stroker_outside): Speed up clipped miter.
* include/freetype/ftstroke.h: Wordsmith miter docs.
2019-09-25 21:50:16 -04:00
Werner Lemberg db4083fd7f * src/sfnt/sfwoff2.c (woff2_open_font): Check (sum of) table sizes.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17684
2019-09-25 08:48:26 +02:00
Alexei Podtelezhnikov 4881f75b7c * src/base/ftstroke.c (ft_stroke_border_arcto): Speed up calculations. 2019-09-23 22:57:00 -04:00
Nikhil Ramakrishnan 5327092bb2 [woff2] Fix memory leaks.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16896

* src/sfnt/sfwoff2.c (woff2_open_font): Fix error handling.
Free `uncompressed_buf'.
(reconstruct_font): Free `transformed_buf'.
2019-09-20 06:30:28 +02:00
Werner Lemberg 04ebb2a000 * src/otvalid/otvcommon.c (otv_Coverage_get_last): Guard `count'.
Problem reported by Marc Schönefeld <marc.schoenefeld@gmx.org>.
2019-09-17 19:46:59 +02:00
Werner Lemberg 99f23d6ff2 * src/sfnt/sfwoff2.c (woff2_open_font): Check table index.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17100
2019-09-17 13:22:28 +02:00
Avi Halachmi (:avih) cc17f852d5 [cmake] Don't fail if brotli is missing (#56894).
The libs which cmake controls are commented out at

  include/freetype/config/ftoption.h

and cmake un-comment each enabled library, but the brotli option was
not commented out, therefore `FT_CONFIG_OPTION_USE_BROTLI' remained
defined even if brotli was missing/disabled/etc.

Comment it such that cmake can control it, which means leaving it
undefined if brotli is missing.

* include/freetype/config/ftoption.h: Fix typo.
2019-09-15 18:52:13 +02:00
Werner Lemberg 3de1b8d0b0 [cmake] Add brotli support.
* CMakeLists.txt (FT_WITH_BROTLI): New option.

* builds/cmake/FindBrotliDec.cmake: New file.
2019-09-05 14:10:01 +02:00
Werner Lemberg 87f5225256 Fix handling of `AF_CONFIG_OPTION_INDIC'.
* devel/ftoption.h, include/freetype/config/ftoption.h:
`AF_CONFIG_OPTION_INDIC' needs `AF_CONFIG_OPTION_CJK'.
2019-09-05 12:14:03 +02:00
Werner Lemberg 12351eeefa CMakeLists.txt: Fix generation of DLL related stuff (#56852).
Extract `version_info' variable from `builds/unix/configure.raw' and
use the data to correctly set `LIBRARY_VERSION' and
`LIBRARY_SOVERSION'.

Also use the data to set `ft_version' field in `freetype2.pc'.
Also fix the needed minimum version of HarfBuzz in `freetype2.pc'.
2019-09-05 12:07:01 +02:00
Werner Lemberg 3fa35aa420 * src/sfnt/sfwoff2.c (compute_ULong_sum): Fix undefined shift.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16933
2019-09-03 21:10:20 +02:00
Werner Lemberg 543a3b939d * src/sfnt/sfwoff2.c (woff2_open_font): Add sanity check.
Don't trust `totalSfntSize' unconditionally.

Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16893
2019-09-01 23:03:09 +02:00
Dominik Röttsches cbee985a2b [woff2] Don't use `FT_UInt64' (#56815).
* src/sfnt/sfwoff2.c (woff2_open_font): Use `FT_UInt32' for
`file_offset'.  This fixes builds on platforms where `FT_LONG64' is
not defined while still being sufficient to store a file offset.
2019-08-27 19:17:56 +02:00
Werner Lemberg 594156586b [truetype] Prevent crash in `TT_Set_Named_Instance' (#56813).
* src/truetype/ttgxvar.c (TT_Set_Named_Instance): Fix error
handling.
2019-08-27 14:07:14 +02:00
Werner Lemberg eef5c1dd14 [woff2] Fix compiler warnings.
* src/sfnt/sfwoff2.c (read_num_hmetrics): Remove unused argument
`table_len'.
Update caller.
(triplet_decode, compute_bbox, store_loca, reconstruct_glyf): Make
`i' variable unsigned.
(reconstruct_glyph): Remove condition which is always false.
(reconstruct_html): Removed unused argument `transformed_size'.
Update caller.

* src/sfnt/woff2tags.c (woff2_known_tags): Remove condition which is
always false.
2019-08-27 10:43:32 +02:00
Nikhil Ramakrishnan 86803acd2a [woff2] Check whether known tag is in array bounds.
If table tag is not 0x3f, we expect a value between 0 and 62.  If
this is not the case, exit with errors.

* src/sfnt/sfwoff2/c: Check whether table tag makes sense.

* src/sfnt/woff2tags.c: Return 0 if tag is out of bounds.
2019-08-27 10:06:03 +02:00
Nikhil Ramakrishnan 1a10301532 * src/sfnt/sfwoff2.c: Improve trace comments.
Adjust tracing levels for comments, and more formatting.
2019-08-27 10:03:06 +02:00
Nikhil Ramakrishnan 2a23dc7fb3 [woff2] Support `hmtx' reconstruction when `glyf' is untransformed.
`reconstruct_hmtx' requires `info->x_mins' and `info->num_glyphs' to
reconstruct the hmtx table.  In case glyf is not transformed, we
call `get_x_mins' which does the necessary work.

* src/sfnt/sfwoff2.c (get_x_mins): New function.
(reconstruct_font): Call get_x_mins.
2019-08-27 09:59:29 +02:00
Nikhil Ramakrishnan 5367e0ca01 [sfnt] Support `face->num_faces' for WOFF2 fonts.
Set correct value of `face->num_faces' for WOFF2 fonts.  This is
being handled separately because we only load the tables for the
requested font face in `woff2_open_font' and create a single-face
sfnt stream.

The full discussion is at:

  https://lists.gnu.org/archive/html/freetype-devel/2019-08/msg00000.html

* src/sfnt/sfobjs.c (sfnt_open_font): Add parameter
`woff2_num_faces'.
(sfnt_init_face): Introduce variable `woff2_num_faces', and change
`face->root.num_faces' if `woff2_num_faces' is set.

* src/sfnt/sfwoff2.c (woff2_open_font): Validate requested face
index and handle negative face indices.

* src/sfnt/sfwoff2.h (woff2_open_font): Add parameter `num_faces' to
declaration.
2019-08-27 09:56:36 +02:00
Nikhil Ramakrishnan bb7668d7c3 [woff2] Improve memory and error handling.
Free up memory after use, and improve error handling.

* src/sfnt/sfwoff2.c (reconstruct_font, woff2_open_font): Implement
changes.
2019-08-27 09:53:45 +02:00
Nikhil Ramakrishnan 1e02076815 [woff2] Avoid too many calls to `FT_REALLOC'.
We do this by using `totalSfntSize' as an initial reference, and
extending the buffer when required.  This reduces rendering time
considerably.

* include/freetype/internal/wofftypes.h (WOFF2_HeaderRec): Add
`totalSfntSize', rename `total_sfnt_size' to `actual_sfnt_size'.

* src/sfnt/sfwoff2.c (write_buf): Add parameter `dst_size' to keep
track of and update total size of stream.

(WRITE_SFNT_BUF, WRITE_SFNT_BUF_AT): Modify macros accordingly.

(pad4, store_loca, reconstruct_glyf, reconstruct_hmtx,
reconstruct_font): Update parameters to accept `sfnt_size'.

(woff2_open_font): Add variable `sfnt_size'.  Use WOFF2 header field
`totalSfntSize' as initial reference (if value makes sense) and
allocate `totalSfntSize' bytes for the sfnt stream.  `write_buf'
handles reallocation if and when required.  Also resize the stream
to `actual_sfnt_size' after reconstruction.
2019-08-27 09:50:48 +02:00
Nikhil Ramakrishnan 4d9b3d1d50 [woff2] Reconstruct `loca', `hmtx', and swap out stream.
Add necessary functions to reconstruct loca and hmtx tables (the two
remaining tables that can have a transform).  `woff2_open_font' is
now capable of loading a woff2 font face.  This code may still need
more refining and better memory management.

* include/freetype/internal/wofftypes.h (WOFF2_HeaderRec): Add total
(final) size of sfnt stream.

(WOFF2_InfoRec): Add header checksum value.

* src/sfnt/sfobjs.c (sfnt_open_font): Change `face_instance_index'
parameter to its pointer so its value can be modified by
`woff2_open_font'.

* src/sfnt/sfwoff2.c: (WRITE_SFNT_BUF_AT): New macro to write into
sfnt buffer at given position.

(write_buf): Add parameter `extend_buf' which allows caller to
specify whether buffer should be reallocated before copying data.

(WRITE_SFNT_BUF): Updated.

(pad4, store_loca, reconstruct_htmx): New functions.

(reconstruct_glyf): Calculate loca values and store them.

(reconstruct_font): Call `reconstruct_hmtx', write table record
entries, and calculate table checksums.  Also calculate font
checksum and update `checksumAdjustment' entry in head table.

(woff2_open_font): Open stream for sfnt buffer, swap out input
stream and return.

* src/sfnt/sfwoff2.h (woff2_open_font): Modify parameter to accept
pointer to `face_index'.
2019-08-27 09:46:47 +02:00
Nikhil Ramakrishnan e3953e5410 [woff2] Reconstruct transformed `glyf' table.
Reconstruct `glyf' table if it is transformed in the uncompressed
table stream.  Also add necessary structures, macros and functions.

* include/freetype/internal/wofftypes.h (WOFF2_InfoRec,
WOFF2_SubstreamRec, WOFF2_PointRec): New structures.
(WOFF2_TableRec): s/OrigLength/dst_length/.

* src/sfnt/sfwoff2.c (READ_255USHORT, READ_BASE128): Use
`FT_SET_ERROR' to set implicit `error' variable.

(WRITE_SHORT): New macro.

(N_CONTOUR_STREAM, N_POINTS_STREAM, FLAG_STREAM, GLYPH_STREAM,
COMPOSITE_STREAM, BBOX_STREAM, INSTRUCTION_STREAM): New macros to
refer to substreams of the transformed `glyf' tables.

(Read255UShort, ReadBase128): Return errors set by `FT_READ_XXX'
macros.

(with_sign, safe_int_addition): New functions to add sign to values
based on a flag and perform safe addition respectively.

(triplet_decode): Decode variable-length (flag, xCoordinate,
yCoordinate) triplet for a simple glyph.   See

  https://www.w3.org/TR/WOFF2/#triplet_decoding

(store_points, compute_bbox, composteGlyph_size, reconstruct_glyf):
New functions.

(reconstruct_font): Call `reconstruct_glyf'.

* src/sfnt/sfwoff2.h: Add required constants.

* src/sfnt/woff2tags.h: Move out constants to `sfwoff2.h'.
2019-08-27 09:39:18 +02:00
Nikhil Ramakrishnan 81cf5326d5 [woff2] Copy un-transformed tables to sfnt stream.
Copy un-transformed tables to the sfnt stream.

* src/sfnt/sfwoff2.c: (WRITE_SFNT_BUF): New macro.
(write_buf): New function.  Extend memory of `dst' buffer and copy
bytes from `src'.
(compute_ULong_sum): New function.  Calculate checksum of table.
(reconstruct_font): Change `FT_Byte* sfnt' to `FT_Byte**
sfnt_bytes'.  This has been done because we reallocate memory to
`sfnt' multiple times, which may change the pointer value of `sfnt'.
This new pointer must be propogated back to the caller.  Same reason
for using a double pointer in `write_buf'.

* src/sfnt/woff2tags.h (WOFF2_DEFAULT_MAX_SIZE): New macro used for
overflow checking.
2019-08-27 09:31:13 +02:00
Nikhil Ramakrishnan 106bacf502 [woff2] Create stream for uncompressed buffer.
Uncompressed buffer is now an `FT_Stream'.

Perform basic checks and start iterating over tables.

* src/sfnt/sfwoff2.c (stream_close, find_table, read_num_hmetrics):
New functions.
(reconstruct_font): Modify parameters and iterate over tables.
(woff2_open_font): Updated.
2019-08-27 09:26:44 +02:00
Nikhil Ramakrishnan 18f6ff11f9 [woff2] Handle TTCs and start reconstructing font.
We `handle' TTCs by modifying the `indices' array to point to only
those tables that are part of the requested `face_index'.

Set and use `num_tables' in `WOFF2_TtcFont'.

* src/sfnt/sfwoff2.c (reconstruct_font): New function.
(woff2_open_font): Start reconstruction of font.
2019-08-27 09:23:55 +02:00
Nikhil Ramakrishnan 7a1639bc1e [woff2] Get known tags from function.
Change `KnownTags' to a function (`woff2_known_tags').  This avoids
introducing a global constant array.  This function returns the
specified index without *any* checks.  The caller must ensure that
`index' is within array limits.

* src/sfnt/sfwoff2.c (woff2_open_font): Change `KnownTags[...]'
notation to `woff2_known_tags( ...  )'.

* src/sfnt/woff2tags.c: Perform changes.

* src/sfnt/woff2tags.h: Update definitions.
2019-08-27 09:20:34 +02:00
Nikhil Ramakrishnan c6c2c0b574 [woff2] Minor.
* src/sfnt/sfwoff2.c (woff2_uncompress): Add error message
(woff2_open_font): Free `uncompressed_buf'.
2019-08-27 09:18:18 +02:00
Nikhil Ramakrishnan fc65d45a62 [woff2] Uncompress Brotli streams and `face_index' support.
WOFF2 compressed stream is now uncompressed if Brotli is available.
This data is stored in a separate buffer (uncompressed_buf) because
it does not contain direct table data.  Certain tables have
transformations applied to them, and they must be reconstructed
before we can write those tables to the SFNT stream.

`face_index' is now being passed as a parameter to
`woff2_open_font'.

* src/sfnt/sfobjs.c (sfnt_open_font): Add parameter
`face_instance_index'.

* src/sfnt/sfwoff2.c (woff2_uncompress): New function.
(woff2_open_font): Call `woff2_uncompress'.
(compute_first_table_offset): Fix return type.

* src/sfnt/sfwoff2.h (woff2_open_font): Modify declaration.
2019-08-27 09:15:28 +02:00
Nikhil Ramakrishnan 732da8a4b7 * builds/unix/configure.raw: Change argument name to `brotli'. 2019-08-27 09:11:37 +02:00
Nikhil Ramakrishnan 9443a1bc3e Add Brotli dependency and required checks.
Brotli is required for decompressing WOFF2 font directory streams.
The library is thus being added as an optional dependency for
FreeType.

* builds/unix/configure.raw: Add checks for `libbrotlidec'.
(REQUIRES_PRIVATE, LIBS_PRIVATE, LIBSSTATIC_CONFIG): Updated.

* devel/ftoption.h, include/freetype/config/ftoption.h
(FT_CONFIG_OPTION_USE_BROTLI): New macro.
2019-08-27 09:09:48 +02:00
Nikhil Ramakrishnan 76c64f6ba1 [woff2] Write SFNT Offset table.
* src/sfnt/sfwoff2.c (WRITE_USHORT, WRITE_ULONG): New macros.
(compare_tags): New function.
(woff2_open_font): Implement it.
2019-08-27 09:06:36 +02:00
Nikhil Ramakrishnan e09fe4cc79 * src/sfnt/sfwoff2.c: #undef macros. 2019-08-27 09:04:16 +02:00
Nikhil Ramakrishnan e496cb2980 [woff2] Read table and collection directory.
* include/freetype/internal/wofftypes.h (WOFF2_TtcFontRec): New
structure.
(WOFF2_HeaderRec): Add more fields.

* src/sfnt/sfwoff2.c (READ_255USHORT, READ_BASE128, ROUND4): New
macros.
(Read255UShort, CollectionHeaderSize, compute_first_table_offset):
New functions.
(ReadBase128): Use `FT_READ_BYTE'.
(woff2_open_font): Add functionality to read table directory and
collection directory (if present).
2019-08-27 09:02:33 +02:00
Nikhil Ramakrishnan 8c1e3fc339 [sfnt] Include `woff2tags.c' for building.
* src/sfnt/rules.mk (SFNT_DRV_SRC): Add `woff2tags.c'.

* src/sfnt/sfnt.c: Include `woff2tags.c'.
2019-08-27 08:58:20 +02:00
Nikhil Ramakrishnan b45c7dd5e2 [sfnt] Add WOFF2 constants.
Add constants required for WOFF2, and known table tags as defined in
the specification.  See

  https://www.w3.org/TR/WOFF2/#table_dir_format

for details.

* src/sfnt/woff2tags.c, src/sfnt/woff2tags.h: New files.
2019-08-27 08:56:10 +02:00
Nikhil Ramakrishnan 2fa573c1b0 [sfnt] Read WOFF 2 header.
Check for WOFF2 tag, call `woff2_open_font', and implement it to read
header according to specification.

* include/freetype/internal/fttrace.h: Add `sfwoff2.c'.

* src/sfnt/rules.mk (SFNT_DRV_SRC): Add `sfwoff2.c'.

* src/sfnt/sfnt.c: Include `sfwoff2.c'.

* src/sfnt/sfobjs.c (sfnt_open_font): Check for `wOF2' tag and call
`woff2_open_font'.

* src/sfnt/sfwoff2.c, src/sfnt/sfwoff2.h: New files.
2019-08-27 08:53:51 +02:00
Nikhil Ramakrishnan 83dba0e9ec Add structures for WOFF2.
Add structures and macro for WOFF 2 header and table directory.

* include/freetype/internal/wofftypes.h (WOFF2_HeaderRec,
WOFF2_TableRec_): New structures.

* include/freetype/tttags.h (TTAG_wOF2): New macro.
2019-08-27 08:48:53 +02:00
Werner Lemberg 9adc3b35f1 * src/psaux/cffdecode.c (cff_operator_seac): Fix numeric overflow.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16470
2019-08-26 20:36:19 +02:00
Werner Lemberg 7d1d3b9a0e [type1] Fix `FT_Get_Var_Axis_Flags' (#56804).
* src/type1/t1load.c (T1_Get_MM_Var): Allocate space for axis flags.
Also remove redundant assignment.
2019-08-26 09:08:56 +02:00
Alexei Podtelezhnikov 12af46b649 * src/base/ftbbox.c (cubic_peak): Sanitize left shift (#56586). 2019-07-23 22:38:30 -04:00
Weiyi Wu d5522ac060 * src/cid/cidload.c (cid_hex_to_binary): Fix typo (#56653). 2019-07-22 09:49:22 +02:00
Werner Lemberg b110acba9e [sfnt, winfonts] Avoid memory leaks in case of error (#56587).
* src/sfnt/sfwoff.c (woff_open_font): Call `FT_FRAME_EXIT' in case
of error.

* src/winfonts/winfnt.c (fnt_face_get_dll_font): Ditto.
2019-07-12 11:36:12 +02:00
Ben Wagner 12e4307dc7 Properly handle phantom points for variation fonts (#56601).
* src/truetype/ttgload.c (TT_Process_Simple_Glyph): Scale phantom
points if HVAR and/or VVAR is present.
2019-07-12 10:48:10 +02:00
Werner Lemberg 05439f5cc6 [psaux] (2/2) Handle fonts that use SEAC for ligatures (#56580).
The same as previous commit but for the old engine.

* src/psaux/t1decode.c (t1operator_seac): Implement it.
2019-07-04 14:28:04 +02:00
Chris Liddell f2b64583cb [psaux] (1/2) Handle fonts that use SEAC for ligatures (#56580).
As originally intended, a Type 1 SEAC charstring would be used for
an accented glyph (like `acaron' or `uumlaut'), where the advance
width of the SEAC glyph is the same as that of the `base' glyph
(like `a' or `u').  In this case it is not uncommon for the SEAC
glyph to not use an (H)SBW opcode of its own but to rely on the
value from the base glyph.

However, out-of-spec fonts also use SEAC glyphs for ligatures (like
`oe' or `fi'), and in those cases the overall advance width is
greater than that of the `base' glyph.  For this reason we have to
allow that the SEAC glyph can have an (H)SBW value of its own, and
if it has, retain this value, rather than the one from the base
glyph.

* src/psaux/psintrp.c (cf2_interpT2CharString) <cf2_escSEAC>:
Implement it.
2019-07-04 14:26:10 +02:00
Werner Lemberg 8cf046c38d * Version 2.10.1 released.
==========================

Tag sources with `VER-2-10-1'.

* docs/VERSION.TXT: Add entry for version 2.10.1.

* README, Jamfile (RefDoc), src/base/ftver.rc,
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/2.10.0/2.10.1/, s/2100/2101/.

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

* builds/unix/configure.raw (version_info): Set to 23:1:17.
* CMakeLists.txt (VERSION_PATCH): Set to 1.

* include/freetype/fterrors.h (FT_Error_String): Fix C++ compilation.
2019-07-01 15:56:34 +02:00
Alexei Podtelezhnikov 7b1c7585d7 * src/bdf/bdfdrivr.c (bdf_cmap_char_{index,next}): Fix inequality.
Reported by Armin Hasitzka.
2019-06-26 20:18:00 -04:00
Werner Lemberg 983a87c6ec * src/tools/apinames.c: Formatting, minor edits. 2019-06-16 16:04:12 +02:00
Werner Lemberg 47ca5cb69d [autofit] Disable hinting if no blue zones are available (#56450).
* src/autofit/afglobal.c (af_face_global_get_metrics): Start again
(with dummy hinter module) if no blue zones are present.

* src/autofit/aflatin.c (af_latin_metrics_init_blues): Change
signature to return error code.
If no blue zones are found, update `glyph_styles' array to hold
AF_STYLE_NONE_DFLT instead of the current style.
(af_latin_metrics_init): Return internal error code if no blue zones
are found.
2019-06-16 15:33:32 +02:00
Werner Lemberg 82e4090431 Towards better VMS support.
More to come.

* builds/vms/LIBS.OPT_IA64, builds/vms/_LINK.OPT_IA64,
builds/vms/vmslib.dat: New files provided by Jouk Jansen
<joukj@hrem.nano.tudelft.nl>.

* builds/vms/ftconfig.h: Update, also from Jouk.
2019-06-16 10:11:46 +02:00
Werner Lemberg 3736b28af9 * src/autofit/aflatin.c (af_latin_metrics_init_widths): Minor. 2019-06-13 13:45:05 +02:00
Alexei Podtelezhnikov e7ac9288ac [smooth] Restore the span buffering for direct mode only.
The buffer size FT_MAX_GRAY_SPANS is set to 10 spans, which should be
enough to cover the entire scanline for simple glyphs in most cases:
each slightly slanted edge needs up to two spans, plus a filling span
in-between.  This is not new, we used to do it before cb4388783c.

* src/smooth/ftgrays.c (gray_TWorker): Add `spans' and `num_spans'.
(gray_hline, gray_sweep): Implement the span buffering.
(gray_raster_render): Use negative `num_spans' to avoid the direct
mode.
2019-06-13 00:17:36 -04:00
Alexei Podtelezhnikov 59e0c6f92e * include/freetype/ftmodapi.h (FT_DebugHook_Func): Return error.
Fix a warning by adding a return value as in `TT_RunIns',
which should not be a compatibility issue.
2019-06-12 22:30:21 -04:00
Alexei Podtelezhnikov d1b16325e2 * src/truetype/ttobjs.c (tt_check_trickyness_family): Add `const'. 2019-06-11 21:43:47 -04:00
Moazin Khatti 6a92b1fadd [gzip] Add support for `gzip' encoded header (#9812). 2019-06-11 21:29:52 +05:00
Alexei Podtelezhnikov 78c02bc110 [type1,type42] Use `const' for string literals.
* include/freetype/internal/psaux.h (PS_Table_FuncsRec): Updated.
* include/freetype/internal/t1types.h (T1_EncodingRec): Updated.
* src/psaux/psobjs.[ch] (ps_table_add): Updated.
* src/type1/t1load.c (T1_Open_Face, parse_encoding): Updated.
* src/type42/t42objs.c (T42_Open_Face): Updated.
* src/type42/t42parse.c (t42_parse_encoding): Updated.

* src/cff/cffobjs.c (cff_face_init): Minor.
2019-06-10 23:09:49 -04:00
Alexei Podtelezhnikov afaf3f1de9 [bdf,pcf] Use `const' for string literals.
* src/bdf/bdf.h (bdf_property_t): Updated `name'.
* src/bdf/bdflib.c (_bdf_list_split,bdf_create_property,
_bdf_add_property,_bdf_ato*): Updated.
* src/bdf/bdfdrivr.c (bdf_interpret_style): Updated.
* src/pcf/pcfread.c (pcf_intrpret_style): Ditto.
2019-06-10 22:27:39 -04:00
Philip Race 711b593e4b * src/base/ftinit.c (FT_Set_Default_Properties): Fix crash.
Terminate loop at end of environment.
2019-06-07 09:15:28 +02:00
Alexei Podtelezhnikov e13c1f46dc Solidify VC2005 builds.
* include/freetype/internal/ftcalc.h (FT_MSB) [_MSC_VER]: Explicitly
declare `_BitScanReverse' intrinsic.
* builds/windows/visualc/freetype.vcproj [Debug]: Disable intrinsics.
2019-05-31 22:31:47 -04:00
Nikhil Ramakrishnan 7b275a5af1 [sfnt] Separate WOFF sources and headers.
Move WOFF sources and headers to separate files.

* include/freetype/internal/wofftypes.h, src/sfnt/sfwoff.c,
src/sfnt/sfwoff.h: New files.

* include/freetype/internal/fttrace.h: Register `sfwoff.c'.

* include/freetype/internal/internal.h: Define
FT_INTERNAL_WOFF_TYPES_H.

* include/freetype/internal/sfnt.h: Include FT_INTERNAL_WOFF_TYPES_H.

* include/freetype/internal/tttypes.h: Move out WOFF structures.

* src/sfnt/rules.mk: Add `sfwoff.c'.

* src/sfnt/sfnt.c: Include `sfwoff.c'.

* src/sfnt/sfobjs.c: Include `sfwoff.h', move out WOFF sources.
2019-05-30 23:57:34 +05:30
Werner Lemberg f0de218ced [base] Fix `make multi'.
Reported by Nikhil.

* src/base/fterrors.c: Include FT_INTERNAL_DEBUG_H.
2019-05-30 08:43:45 +02:00
Ben Wagner f37083edf0 [truetype] Fix copy-and-paste error (#56409).
* src/truetype/ttgload.c (load_truetype_glyph): Use correct indices
into `unrounded' array for phantom points.
2019-05-29 08:15:38 +02:00
Werner Lemberg 49079ce297 [truetype] Fix 32bit builds (#56404).
Patch suggested by Ben Wagner <bungeman@google.com>.

* src/truetype/ttgxvar.c (FT_fixedToInt, FT_fixedToFdot6): Remove
harmful cast to unsigned type.
2019-05-29 08:08:53 +02:00
Ben Wagner 86d997e5b1 * src/truetype/ttgload.c (TT_Process_Simple_Glyph): Improve accuracy. 2019-05-26 09:37:41 -04:00
Werner Lemberg 306d2f6ccb [truetype] Draw glyphs without deltas in variation font (#56374).
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Always fill
`unrounded' array.
2019-05-23 14:41:57 +02:00
Werner Lemberg 262fce445a * src/truetype/ttinterp.c (opcode_name): Improve mnemonics. 2019-05-21 09:58:51 +02:00
Alexei Podtelezhnikov 141e3173db Rendering considerations. 2019-05-20 23:09:59 -04:00
Werner Lemberg b0522701f8 [truetype] Actually scale varied CVT values.
Up to now, only the unscaled CVT values were varied; in other words,
the `CVAR' data was never used for bytecode hinting.

* src/truetype/ttgxvar.c (tt_cvt_ready_iterator): New auxiliary
function.
(tt_face_vary_cvt): Use it to trigger rescaling of CVT values.
2019-05-16 12:52:57 +02:00
Werner Lemberg 37580053b4 [truetype] Use 26.6 format for storing unscaled CVT values.
If `CVAR' data is applied to variation fonts, fractional values are
possible.

* include/freetype/internal/tttypes.h (TT_FaceRec): Change type of
`cvt' from `FT_Short' to `FT_Int32'.

* src/truetype/ttgxvar.c (FT_fdot6ToFixed): New macro.
(tt_face_vary_cvt): Use it to update code to 26.6 format.

* src/truetype/ttobjs.c (tt_size_run_prep): Update code to 26.6
format.

* src/truetype/ttpload.c (tt_face_load_cvt): Stora data in 26.6
format.
2019-05-16 12:15:54 +02:00
Werner Lemberg ac335cd586 * src/truetype/ttgload.c (load_truetype_glyph): Init `unrounded'.
This fixes linear advance width values for spacing glyphs.  Bug
introduced 2019-05-09.
2019-05-16 10:15:53 +02:00
Werner Lemberg 535b687e58 [truetype] Avoid code duplication.
* src/truetype/ttobjs.c (tt_size_run_prep): Scale CVT values in this
function.
(tt_size_ready_bytecode): Updated.
* src/truetype/ttgload.c (tt_loader_init): Updated.
2019-05-16 09:55:16 +02:00