From 4ee9d04bd5d518e5f1f86875f4f8184fc0552f44 Mon Sep 17 00:00:00 2001 From: Akira Kakuto Date: Fri, 3 Dec 2021 04:03:12 +0000 Subject: freetype 2.11.1 git-svn-id: svn://tug.org/texlive/trunk@61211 c570f23f-e606-0410-a88d-b1316a301751 --- .../freetype-src/docs/oldlogs/ChangeLog.210 | 7815 ++++++++++++++++++++ 1 file changed, 7815 insertions(+) create mode 100644 Build/source/libs/freetype2/freetype-src/docs/oldlogs/ChangeLog.210 (limited to 'Build/source/libs/freetype2/freetype-src/docs/oldlogs') diff --git a/Build/source/libs/freetype2/freetype-src/docs/oldlogs/ChangeLog.210 b/Build/source/libs/freetype2/freetype-src/docs/oldlogs/ChangeLog.210 new file mode 100644 index 00000000000..eea4d27b33a --- /dev/null +++ b/Build/source/libs/freetype2/freetype-src/docs/oldlogs/ChangeLog.210 @@ -0,0 +1,7815 @@ +2021-07-18 Werner Lemberg + + * Version 2.11.0 released. + ========================== + + + Tag sources with `VER-2-11-0'. + + * docs/VERSION.TXT: Add entry for version 2.11.0. + * docs/CHANGES: Updated. + + * README, src/base/ftver.rc, builds/windows/vc2010/index.html, + builds/windows/visualc/index.html, + builds/windows/visualce/index.html, + builds/wince/vc2005-ce/index.html, + builds/wince/vc2008-ce/index.html, docs/freetype-config.1: + s/2.10.4/2.11.0/, s/2104/2110/. + + * include/freetype/freetype.h (FREETYPE_MINOR): Set to 11. + (FREETYPE_PATCH): Set to 0. + + * builds/unix/configure.raw (version_info): Set to 24:0:18. + * CMakeLists.txt (VERSION_MINOR): Set to 11. + (VERSION_PATCH): Set to 0. + + * builds/toplevel.mk (dist): Ignore more git-related files. + +2021-07-17 David Turner + + * src/smooth/ftgrays.c: Fix compilation if `FT_LONG64` is undefined. + + The code assumed that if `__SSE2__` is defined, then 64-bit integer + types are available. This is not the case apparently for certain + multilib compiler targets like 'x86_32.x86' used by Gentoo. + + This patch fixes the issue by disabling the special code path when + 64-bit integer types are not available. + + Fixes #1071. + +2021-07-16 Alex Richardson + + [tests] Allow arbitrary build directories. + + * tests/issue-1063/main.c (main): I am building with a build + directory that is not directly inside the source tree, so the path + `../tests/data/As.I.Lay.Dying.ttf` does not resolve to the test + input file. This change passes the test data directory as an + environment variable to allow arbitrary build directories. + + * tests/meson.build: Updated. + +2021-07-16 Alex Richardson + + * tests/issue-1063/main.c (main): Fix uninitialized variable. + + I tried running `meson test` but the test just crashed and gdb + reported that the face argument to `FT_Get_Char_Index` was nonsense. + With this change the test prints 'Could not open file: ' as it + should. + +2021-07-16 Werner Lemberg + + [smooth] Minor fixes. + + * src/smooth/ftgrays.c (gray_render_conic): Move variable and + structure declarations to beginning of function. Inspite of C99 + compliance we still do this for the sake of backward compatibility. + This also avoids a shadowing declaration of `count`. + (gray_convert_glyph_inner): Fix typo. + +2021-07-15 Ben Wagner + + * src/smooth/ftgrays.c: Guard inclusion of `emmintrin.h`. + + Guard inclusion of `emmintrin.h` with `#ifdef __SSE2__`. The gcc + version of this header, `xmmintrin.h`, and `mmintrin.h` check that + the appropriate defines are set before defining anything (are + internally guarded). However, the clang versions of these includes + are not internally guarded. As a result of this, externally guard + the inclusion of these headers. + +2021-07-15 David Turner + + [smooth] Implement Bézier quadratic arc flattening with DDA. + + Benchmarking shows that this provides a very slighty performance + boost when rendering fonts with lots of quadratic Bézier arcs, + compared to the recursive arc splitting, but only when SSE2 is + available, or on 64-bit CPUs. + + On a 2017 Core i5-7300U CPU on Linux/x86_64: + + ftbench -p -s10 -t5 -cb DroidSansFallbackFull.ttf + + Before: 4.033 us/op (best of 5 runs for all numbers) + After: 3.876 us/op + + ftbench -p -s60 -t5 -cb DroidSansFallbackFull.ttf + + Before: 13.467 us/op + After: 13.385 us/op + + * src/smooth/ftgrays.c (gray_render_conic): New implementation + based on DDA and optionally SSE2. + +2021-07-15 David Turner + + [smooth] Minor speedup to smooth rasterizer. + + This speeds up the smooth rasterizer by avoiding conditional + branches in the hot path. + + - Define a fixed 'null cell', which will be pointed to whenever the + current cell is outside of the current target region. This avoids + a `ras.cell != NULL` check in the `FT_INTEGRATE` macro. + + - Also use the null cell as a sentinel at the end of all `ycells` + linked-lists, by setting its x coordinate to `INT_MAX`. This + avoids a `if (!cell)` check in `gray_set_cell` as well. + + - Slightly change the worker struct fields to perform a little less + operations during rendering. + + Example results (on a 2013 Corei5-3337U CPU) + + out/ftbench -p -s10 -t5 -bc DroidSansFallbackFull.ttf + + Before: 5.472 us/op + After: 5.275 us/op + + out/ftbench -p -s60 -t5 -bc DroidSansFallbackFull.ttf + + Before: 17.988 us/op + After: 17.389 us/op + + * src/smooth/ftgrays.c (grat_TWorker): Replace `num_cells` field with + `cell_free` and `cell_limit`. + (NULL_CELL_PTR, CELL_MAX_X_VALUE, CELL_IS_NULL): New macros. + (gray_dump_cells, gray_set_cell, gray_sweep, gray_sweep_direct, + gray_convert_glyph_inner, gray_convert_glyph): Updated. + +2021-07-15 David Turner + + [tests] Rewrite download script in Python3. + + This commit replaces the bash script with a Python script that does + the same work, plus avoiding to download anything if the files are + already installed with the right content. + + We now use the first 8 bytes of each file's sha256 hash for the + digest. + + * tests/scripts/download-test-fonts.sh: Removed. + * tests/scripts/download-test-fonts.py: New script. + * tests/README.md: Updated. + +2021-07-15 Alex Richardson + + Support architectures where `long` is smaller than pointers. + + I am currently trying to compile FreeType for CHERI-extended ISAs + (CHERI-RISC-V and Arm's Morello), but I am getting compiler warnings + from the `FT_UINT_TO_POINTER` macro. When compiling with the CHERI + Clang compiler, not using `uinptr_t` for casts between integers an + pointers results in the following `-Werror` build failures: + + ``` + In file included from .../src/truetype/truetype.c:22: + .../src/truetype/ttgload.c:1925:22: error: + cast from provenance-free integer type to pointer type will + give pointer that can not be dereferenced + [-Werror,-Wcheri-capability-misuse] + node->data = FT_UINT_TO_POINTER( glyph_index ); + ^ + .../include/freetype/internal/compiler-macros.h:79:34: note: + expanded from macro 'FT_UINT_TO_POINTER' + ``` + + * include/freetype/internal/compiler-macros.h (FT_UINT_TO_POINTER): + The ISO C standard compliant fix for this would be to use + `uintptr_t` from `stdint.h`, but I am not sure if this is supported + by the minimum compiler version. Therefore, use the + compiler-defined `__UINTPTR_TYPE__` macro (supported in GCC 4.6+ and + Clang since about 3.0) before checking for `_WIN64` and falling back + to `unsigned long`. + +2021-07-13 Oleg Oshmyan + + [base] Fix `FT_Open_Face`'s handling of user-supplied streams. + + This was already true (though undocumented) most of the time, but + not if `FT_NEW` inside `FT_Stream_New` failed or if the + `FT_OPEN_XXX` flags were bad. + + Normally, `FT_Open_Face` calls `FT_Stream_New`, which returns the + user-supplied stream unchanged, and in case of any subsequent error + in `FT_Open_Face`, the stream is closed via `FT_Stream_Free`. + + Up to now, however, `FT_Stream_New` allocates a new stream even if + it is already given one by the user. If this allocation fails, the + user-supplied stream is not returned to `FT_Open_Face` and never + closed. Moreover, the user cannot detect this situation: all they + see is that `FT_Open_Face` returns `FT_Err_Out_Of_Memory`, but that + can also happen after a different allocation fails within the main + body of `FT_Open_Face`, when the user's stream has already been + closed by `FT_Open_Face`. It is plausible that the user stream's + `close` method frees memory allocated for the stream object itself, + so the user cannot defensively free it upon `FT_Open_Face` failure + lest it ends up doubly freed. All in all, this ends up leaking the + memory/resources used by user's stream. + + Furthermore, `FT_Stream_New` simply returns an error if the + `FT_OPEN_XXX` flags are unsupported, which can mean either an + invalid combination of flags or a perfectly innocent + `FT_OPEN_STREAM` on a FreeType build that lacks stream support. + With this patch, the user-supplied stream is closed even in these + cases, so the user can be sure that if `FT_Open_Face` failed, the + stream is definitely closed. + + * src/base/ftobjs.c (FT_Stream_New): Don't allocate a buffer + unnecessarily. + Move error-handling code to make the control flow more obvious. + Close user-supplied stream if the flags are unsupported. + `FT_Stream_Open` always sets `pathname.pointer`, so remove the + redundant (re)assignment. None of the `FT_Stream_Open...` functions + uses `stream->memory`, so keep just one assignment at the end, + shared among all possible control flow paths. + ('Unsupported flags' that may need a stream closure can be either an + invalid combination of multiple `FT_OPEN_XXX` mode flags or a clean + `FT_OPEN_STREAM` flag on a FreeType build that lacks stream + support.) + +2021-07-13 Oleg Oshmyan + + [base] Reject combinations of incompatible `FT_OPEN_XXX` flags. + + The three modes are mutually exclusive, and the documentation of the + `FT_OPEN_XXX` constants notes this. However, there was no check to + validate this in the code, and the documentation on `FT_Open_Args` + claimed that the corresponding bits were checked in a well-defined + order, implying it was valid (if useless) to specify more than one. + Ironically, this documented order did not agree with the actual + code, so it could not be relied upon; hopefully, nobody did this and + nobody will be hurt by the new validation. + + Even if multiple mode bits were allowed, they could cause memory + leaks: if both `FT_OPEN_STREAM` and `stream` are set along with + either `FT_OPEN_MEMORY` or `FT_OPEN_PATHNAME`, then `FT_Stream_New` + allocated a new stream but `FT_Open_Face` marked it as an 'external' + stream, so the stream object was never released. + + * src/base/ftobjs.c (FT_Stream_New): Reject incompatible + `FT_OPEN_XXX` flags. + +2021-07-12 Alex Richardson + + * meson.build: Fix build for other UNIX systems (e.g., FreeBSD). + + Without this change the build of `unix/ftsystem.c` fails because the + `ftconfig.h` header that defines macros such as `HAVE_UNISTD_H` and + `HAVE_FCNTL_H` is only being generated for Linux, macOS, and Cygwin + systems: + + ``` + .../builds/unix/ftsystem.c:258:32: error: + use of undeclared identifier 'O_RDONLY' + file = open( filepathname, O_RDONLY ); + ``` + + Instead of hardcoding a list of operating systems for this check, + update the logic that decides whether to build the file and set a + boolean flag that can be checked instead. + +2021-07-12 Werner Lemberg + + [autofit] More clean-ups. + + * src/autofit/afhints.h (AF_GlyphHintsRec): Remove the no longer + needed fields `xmin_delta` and `xmax_delta`. + + * src/autofit/afhints.c (af_glyph_hints_reload), + src/autofit/afloader.c (af_loader_load_glyph): Updated. + +2021-07-12 Werner Lemberg + + Small clean-ups for the last few commits. + + * include/freetype/fttrace.h (afwarp): Removed. + +2021-07-12 David Turner + + Remove obsolete `AF_Angle` type and related sources. + + * src/autofit/afangles.c: File removed. Functions related to + sorting moved to... + * src/autofit/afhints.c (af_sort_pos, af_sort_and_quantize_widths): + This file. + * src/autofit/afangles.h: File removed. + * src/autofit/aftypes.h: Updated. + * src/autofit/autofit.c: Updated. + + * src/autofit/rules.mk (AUTOF_DRV_SRC): Updated. + +2021-07-12 David Turner + + Remove experimental auto-hinting 'warp' mode. + + This feature was always experimental, and probably never worked + properly. This patch completely removes it from the source code, + except for a documentation block describing it for historical + purposes. + + * devel/ftoption.h, include/freetype/config/ftoption.h: Remove + `AF_CONFIG_OPTION_USE_WARPER`. + + * include/freetype/ftdriver.h: Document 'warping' property as + obsolete. + + * src/autofit/afwarp.c, src/autofit/afwarp.h: Files removed. + * src/autofit/*: Remove any code related to warp mode. + +2021-07-12 David Turner + + Remove experimental 'Latin2' writing system (`FT_OPTION_AUTOFIT2`). + + This code has always been experimental and was never compiled anyway + (`FT_OPTION_AUTOFIT2` does not appear in `ftoption.h` or even any of + our build files). + + * include/freetype/internal/fttrace.h (aflatin2): Removed. + * src/autofit/aflatin2.h, src/autofit/aflatin2.c: Files removed. + * src/autofit/afloader.c: Remove undocumented hook to activate + Latin2 system. + * src/autofit/afstyles.h: Remove `ltn2_dflt` style definition. + * src/autofit/afwrtsys.h: Remove `LATIN2` writing system definition. + * src/autofit/autofit.c: Updated. + +2021-07-05 Werner Lemberg + + * src/base/ftlcdfil.c (FT_Library_SetLcdGeometry): Fix argument. + + Reported by Hin-Tak. + +2021-07-03 Werner Lemberg + + * meson_options.txt: Sort alphabetically; no final full stops. + +2021-07-01 Ben Wagner + + * src/truetype/ttgxvar.c (tt_set_mm_blend): Test `coords`. + + It is undefined behavior to pass `NULL` to `memcpy`. `coords' is + passed to `memcpy` but `TT_Get_MM_Blend` and `TT_Get_Var_Design` + explictly call `tt_set_mm_blend` with `coords` as `NULL`. In + addition, `TT_Set_MM_Blend` has a similar possible issue. + +2021-06-30 Dominik Röttsches + + [sfnt] Support PaintScale in 'COLR' v1 parsing. + + * include/freetype/ftcolor.h (FT_PaintFormat): Renumber values, add + `FT_COLR_PAINTFORMAT_SCALE`. + (FT_PaintScale): New structure to represent 'PaintScale*' tables. + (FT_COLR_Paint): Updated. + + * src/sfnt/ttcolr.c (FT_PaintFormat_Internal): New enumeration. + (read_paint): Parse 'PaintScale' and friends. + +2021-06-30 Dominik Röttsches + + [sfnt] Handle fonts without layer list in 'COLR' v1. + + 'COLR' v1 fonts do not necessarily need to have a layer list; for + this reason, 'fontTools' recently started generating fonts in a way + that drops the layer list if there are no layers in it. This + results in the layer list offset becoming zero, which FreeType + treated as an invalid table. Fix that and handle the case for layer + list offset being 0. This slightly changes how we need to calculate + the starting offset for paints. + + * src/sfnt/ttcolr.c (tt_face_load_colr): Handle case of layer list + offset being zero without outright rejecting table. + +2021-06-30 Alexei Podtelezhnikov + + * src/raster/ftraster.c (Render_Single_Pass): Simplify `band_stack'. + +2021-06-29 Alexei Podtelezhnikov + + [raster] Do not skip the second pass without dropout control. + + The second pass also fixes horizontal lines through the pixel centers. + + * src/raster/ftraster.c (black_TWorker): Do not use `second_pass'. + (Render_Glyph): Skip the second pass only with the appropriate flag. + +2021-06-29 Alexei Podtelezhnikov + + [raster] Handle sub-band stack locally. + + * src/raster/ftraster.c (black_TWorker): Move `band_stack' from here.. + (Render_Single_Pass): ... to here and accept limit arguments. + (Render_Glyph): Updated. + +2021-06-25 Anurag Thakur + + [CI] Introduce linux CI and refactor job names. + + * .gitlab-ci.yml: Added jobs for building freetype on linux. + +2021-06-28 Alexei Podtelezhnikov + + [raster] Handle Bézier stack locally. + + * src/raster/ftraster.c (black_TWorker): Move `arcs' from here... + (Conic_To, Cubic_To): ... to here to tighten their scope. + (Bezier_Up, Bezier_Down): ... Take the current `arc' argument. + +2021-06-28 Dominik Röttsches + + [sfnt] Improve paint limit checks + + Paint tables can appear before the `base_glyphs_v1` offset if the + font is produced with the layer list before the base glyph list. In + this case paint tables can occur after the layer list but before the + base glyph list. Checks in the 'COLR' v1 code were rejecting fonts + with this layout. Improve these checks by calculating a minimum + offset after which paint tables can occur and use that in safety + checks. + + * src/sfnt/ttcolr.c (Colr, tt_face_load_colr): Declare + `paint_start_v1` and calculate that as the minimum of the end of + layer list and base glyph list. + (get_child_table_pointer, read_paint, tt_face_get_paint_layers): + Use that in safety checks. + +2021-06-28 Alexei Podtelezhnikov + + [raster] Clean up vertical sweep. + + * src/raster/ftraster.c (black_TWorker): Replace the current line + offset with the pointer and drop the increment. + (Function_Sweep_Init): Take values as arguments instead of pointers. + (Vertical_Sweep_*, Horizontal_Sweep_Init, Draw_Sweep): Updated. + +2021-06-25 Alexei Podtelezhnikov + + [raster] Make `band_top' local variable. + + * src/raster/ftraster.c (black_TWorker): Move `band_top' from here... + (Render_Single_Pass): ... to here, and refactor. + (Render_Glyph): Updated. + +2021-06-25 Alexei Podtelezhnikov + + [raster] Adjust sub-band bisecting limits. + + We can bisect a band until it is just a single scan line. This might + be slow and cause time-outs but if we need to impose limits it should + be elsewhere. + + * src/raster/ftraster.c (Render_Single_Pass): Tweak sub-banding. + +2021-06-25 Alexei Podtelezhnikov + + * src/raster/ftraster.c (Render_Single_Pass): Remove dead code. + +2021-06-25 Werner Lemberg + + [base] Add trace level to logging output. + + Some practical debugging work has shown that displaying level X of + an `FT_TRACEX` macro in the output of `FT2_DEBUG="... -v"` would be + very helpful to find out which trace level should be selected. As + an example, we now get output like + + ``` + [ttobjs:2] TTF driver + [ttobjs:2] SFNT driver + [sfobjs:2] not a font using the SFNT container format + [t1objs:2] Type 1 driver + [stream:7] FT_Stream_EnterFrame: 14 bytes + ``` + + * include/freetype/internal/ftdebug.h (FT_LOGGING_TAGX): New macro. + (FT_LOG): Use it to add the trace level to the logging tag. + + * include/freetype/internal/fttrace.h (FT_MAX_TRACE_LEVEL_LENGTH): + Adjust. + + * docs/DEBUG: Updated. + +2021-06-24 Alexei Podtelezhnikov + + [smooth, raster] Fix up and align error codes. + + FT_Render_Glyph picked up FAILURE or 1 returned from the raster + function, which became a confusing error code. Instead, return + Raster_Overflow in the unlikely event that banding does not help or + another meaningful error. + + * src/smooth/ftgrays.c (gray_convert_glyph_inner, gray_convert_glyph): + Use Raster_Overflow when the rendering pool is exhausted and return it + if banding does not help. + (gray_raster_render): Use Smooth_Err_Ok. + + * src/raster/ftraster.c (Render_Single_Pass): Return Raster_Overflow + if banding does not help or another error code. + +2021-06-23 Alexei Podtelezhnikov + + [smooth, raster] Remove synonymous error macros. + + * src/smooth/ftgays.c [STANDALONE_]: s/ErrRaster_/Smooth_Err_/. + (gray_convert_glyph_inner): Updated accordingly. + + * src/raster/ftraster.c [STANDALONE_]: Do not abbreviate error macros. + (New_Profile, End_Profile, Insert_Y_Turn, Line_Up, Bezier_Up, + Decompose_Curve, Draw_Sweep, Render_Single_Pass, ft_black_render): + Updated accordingly. + +2021-06-22 Dominik Röttsches + + [sfnt] s/PaintTransformed/PaintTransform/, s/transformed/transform/. + + * include/freetype/ftcolor.h (FT_PaintTransformed, FT_PaintFormat, + FT_COLR_Paint): Do it to make it harmonize with other names such as + 'PaintTranslate'. + + * src/sfnt/ttcolr.c (read_paint, tt_face_get_paint): Ditto. + +2021-06-22 Dominik Röttsches + + Move 'COLR' API to `ftcolor.h`. + + * include/freetype/freetype.h: Cut section layer managament + containing 'COLR' v0 and v1 API and move it to `ftcolor.h` as + requested by Werner on freetype-devel. + * include/freetype/ftcolor.h: Paste that section. + +2021-06-19 Werner Lemberg + + [truetype] Fix integer overflow. + + Reported as + + https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35312 + + * src/truetype/ttinterp.c (Ins_JMPR): Use `ADD_LONG`. + +2021-06-19 Werner Lemberg + + [autofit] Prevent hinting if there are too many segments. + + This speeds up handling of broken glyphs. + + Reported as + + https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35309 + + * src/autofit/aflatin.c (af_latin_hints_compute_segments): Implement + it. + +2021-06-18 Alexei Podtelezhnikov + + * src/sdf/ftsdfrend.c (ft_(b)sdf_render): Do not FT_ERROR routinely. + +2021-06-16 David Turner + + [autofit] Fix return value of `FT_Load_Glyph`. + + * src/autofit/afglobal.c (af_face_globals_get_metrics): The issue is + that `style_metrics_init` sometimes returns -1 without clearing + `error`. While looping to `Again`, the next operation is + successful, but -1 is still returned by the function. The fix is to + set `error` to 0 appropriately. + + Fixes #1063. + +2021-06-15 David Turner + + [meson] Add first regression test to FreeType. + + * tests/README.md: New file that explains how to build and run the + tests with the Meson build. + + * tests/scripts/download-test-fonts.sh: New bash script to download + test font files to the `tests/data` folder. + + * meson.build, meson_options.txt: Add 'tests' option to enable + building and running the test programs (disabled by default). + + * tests/meson.build: New file. + + * tests/issue-1063/main.c: Simple regression test to exhibit issue + 1063. + + * .gitignore: Ignore the content of the `tests/data` folder for + now. + +2021-06-12 Alexei Podtelezhnikov + + [type42] Fix new memory leak. + + We need to inverse inheritance of FT_GlyphSlot_Internal so that we + have a chance to free the rendered bitmap from the parent slot. + + * src/type42/t42objs.c (T42_GlyphSlot_Init): Remove the internal parts + of the child `ttslot' and replace it with the parent structure. + (T42_GlyphSlot_Done): Updated accordingly. + +2021-06-12 Werner Lemberg + + [psaux] Fix another assertion. + + * src/psaux/psintrp.c (cf2_interpT2CharString) + : Convert assertion into error, since the + problem can happen with invalid user input. + + Test case is file + + fuzzing/corpora/legacy/oss-fuzz/5754332360212480-unknown-read + + in the `freetype2-testing` repository. + +2021-06-12 Werner Lemberg + + [psaux] Fix assertions. + + * src/psaux/pshints.c (cf2_hintmap_adjustHints): Check for overflow + before emitting an assertion error. + + Test case is file + + fuzzing/corpora/legacy/oss-fuzz/4594115297673216-integer-overflow + + in the `freetype2-testing` repository. + +2021-06-09 Alexei Podtelezhnikov + + * src/truetype/ttinterp.c (TT_RunIns): Optimize tracing. + +2021-06-09 Alexei Podtelezhnikov + + [sdf] Fix SDF positioning. + + * src/sdf/ftsdfrend.c (ft_sdf_render, ft_bsdf_render): Add padding to + `bitmap_top' and `bitmap_left'. + + * sdf/sdf/ftsdf.c (sdf_generate_with_overlaps): Fix VC++ warning. + +2021-06-08 Werner Lemberg + + Fix 'devel' build for 'COLR' v1. + + * devel/ftoption.h: Synchronize with + `include/freetype/config/ftoption.h`. + +2021-06-08 Werner Lemberg + + [sfnt] Sanitize cmap4 table better. + + Fixes #1062. + + * src/sfnt/ttcmap.c (tt_cmap4_validate): Handle a too-small value of + `length` gracefully. + +2021-06-08 Dominik Röttsches + + [sfnt] Pointer validity check when reading 'COLR' v1 layers + + * src/sfnt/ttcolr.c (tt_face_get_paint_layers): In addition to the + existing sanity checks, ensure that the pointer to the layer to be + read is within the 'COLR' v1 table. + +2021-06-08 Werner Lemberg + + * src/sdf/ftsdfcommon.c: Fix inclusion of header files. + +2021-06-08 Werner Lemberg + + [sdf] Make `make multi` work. + + * src/sdf/ftsdf.c: Include `ftbitmap.h`. + + * src/sdf/ftsdfcommon.h: Move function bodies to `ftsdfcommon.c`. + Include `ftobjs.h` to get definitions of `FT_LOCAL` and friends. + + * src/sdf/ftsdfcommon.c: New file. + + * src/sdf/rules.mk, src/sdf/sdf.c: Updated. + +2021-06-08 Anuj Verma + + [sdf] Use 8 bits for final SDF output instead of 16bits. + + Since 8-bits is enough to represent SDF data we no longer require + 16-bits for this purpose. Also, we now normalize the output data + to use the entire 8-bit range efficiently. For example: if we use + 3.5 format with a spread of 1 we basically only use the starting + 5-bits. By normalizing we can use the entire 8-bit range. + + * include/freetype/freetype.h (FT_Render_Mode): Updated description + for `FT_RENDER_MODE_SDF` regarding this change. + + * include/freetype/ftimage.h (FT_Pixel_Mode): Removed + `FT_PIXEL_MODE_GRAY16` since no longer required. + + * include/freetype/fttypes.h (FT_F6Dot10): Removed since no longer + required. + + * src/sdf/ftsdfrend.c (ft_sdf_render, ft_bsdf_render): Allocate 8-bit + bitmap instead of 16-bit buffer. + + * src/sdf/ftsdfcommon.h (map_fixed_to_sdf): Added function to convert + 16.16 distance value to our desired format. + + * src/sdf/ftsdf.c (sdf_generate_with_overlaps, + sdf_generate_bounding_box): Use the new `map_fixed_to_sdf` function + and also use 8-bit output buffer. + + * src/sdf/ftbsdf.c (finalize_sdf): Output to a 8-bit buffer instead + of 16-bit buffer. + +2021-06-02 Ben Wagner + Werner Lemberg + + [sfnt] Fix fallout from 2021-05-29 change. + + * src/sfnt/ttcolr.c (find_base_glyph_record, + find_base_glyph_v1_record): Adjust binary search. + + Needs to be updated with change to unsigned. + +2021-06-02 Werner Lemberg + + * src/autofit/aflatin.c (af_latin_metrics_scale_dim): Fix tracing. + + Problem reported by Alexei. + +2021-06-02 Werner Lemberg + + [psaux] Fix MSVC compiler warnings. + + * src/psaux/afmparse.c (afm_parse_track_kern, afm_parse_kern_pairs): + Add cast. + +2021-05-29 Werner Lemberg + + Fix compilation errors and (some) warnings for clang++. + + * src/autofit/afmodule.c (AF_GlyphHintsRec): Make it static. + + * src/cache/ftcache.c (FTC_Cache_NewNode), src/cache/ftcsbits.c + (ftc_snode_compare): Remove semicolon. + + * src/cff/cffparse.c (cff_parser_run): Add `break` statement. + + * src/cid/cidload.c (cid_hex_to_binary): Add cast. + + * src/sdf/ftbsdf.c (CHECK_NEIGHBOR): Use `do {} while(0)` loop. + (bsdf_init_distance_map, finalize_sdf, bsdf_raster_render): Add + casts. + * src/sdf/ftsdf.c (sdf_generate_bounding_box, + sdf_generate_with_overlaps): Ditto. + * src/sdf/ftsdfcommon.h (square_root): Ditto. + * src/sdf/ftsdfrend.c (sdf_property_get, ft_sdf_render, + ft_bsdf_render): Ditto. + + * src/sfnt/ttcolr.c (find_base_glyph_record, + find_base_glyph_v1_record): Fix variable signedness. + (read_color_line): Add cast. + (read_paint): Add casts. + Fix signedness issue. + (tt_face_get_colorline_stops) Fix signedness issues. + + * src/sfnt/ttpost.c (load_format_20): Add casts. + + * src/truetype/ttsubpix.c (TWEAK_RULES, TWEAK_RULES_EXCEPTIONS): + Remove final semicolons. + +2021-05-29 Werner Lemberg + + [build] Allow overriding of `ANSIFLAGS` for GNU make build. + + * builds/*: Implement it. + +2021-05-27 Alexei Podtelezhnikov + + [type42] Fix auto-hinting. + + The autohinter could not access the base (unscaled) outline in the + child TrueType glyph slot. We now share the internal parts between + the parent and child glyph slots. Fixes #1057. + + * src/type42/t42objs.c (T42_GlyphSlot_Init): Remove the internal parts + of `T42_GlyphSlot' and replace it with the child TrueType structure. + (T42_GlyphSlot_Done): Updated accordingly. + +2021-05-25 Werner Lemberg + + [psaux] Guard and trace AFM kern data allocation. + + Reported as + + https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31543 + + * include/freetype/internal/fttrace.h: Add 'afmparse' trace + component. + + * src/psaux/afmparse.c (FT_COMPONENT): Define. + (afm_parse_track_kern, afm_parse_kern_pairs): Protect against + allocations bombs. + Add tracing. + (afm_parse_kern_data): Don't allow multiple kern data sections. + +2021-05-23 Alexei Podtelezhnikov + + * meson.build (ft2_public_headers): Add missing `ftcid.h'. + + Fixes #1058. + +2021-05-20 Alexei Podtelezhnikov + + [type42] Avoid some memory zeroing. + + * src/type42/t42objs.c (T42_Open_Face): Tweak allocation macro. + * src/type42/t42parse.c (t42_parse_sfnts): Ditto. + +2021-05-19 Nikolaus Waxweiler + + [CMake] Update dependency finders. + + 1. Fixes CMake using any found HarfBuzz version lower than the minimum + required. This is based on HALX99's merge request at + https://gitlab.freedesktop.org/freetype/freetype/-/merge_requests/31 + 2. Update FindHarfBuzz.cmake from + https://github.com/WebKit/WebKit/blob/1ce32454/Source/cmake/FindHarfBuzz.cmake + and guard post-CMake-3.1 features to keep the minimum version unchanged + 3. Update FindBrotliDec.cmake to stop the warnings, based on what + https://github.com/google/woff2/blob/a0d0ed7d/cmake/FindBrotliDec.cmake + is doing + + * CMakeLists.txt, builds/cmake/FindHarfBuzz.cmake: Implement 1 and 2. + * builds/cmake/FindBrotliDec.cmake: Implement 3. + +2021-05-19 Ben Wagner + + [gzip] Use exact type for `ft_gzip_alloc` and `ft_gzip_free`. + + While a function pointer may be cast to another function pointer + type, it is required to cast the function pointer back to the + original function pointer type before calling it. If a parameter is + a pointer the exact pointer type is required. Using a pointer to a + different underlying type is technically undefined behavior. The + wrapper functions `ft_gzip_alloc` and `ft_gzip_free` took + `FT_Memory` (a `FT_MemoryRec_*`) instead of `voidpf` (`void*`), so + when gzip calls these callbacks through `alloc_func` or `free_func` + it invokes undefined behavior. On most platforms this works out as + expected, but newer undefined behavior detectors and targets like + wasm can detect this and will produce an error. + + * src/gzip/ftgzip.c (ft_gzip_alloc, ft_gzip_free): Update signatures + to exactly match `alloc_func` and `free_func`, respectively. + Internally, cast the `void*` opaque pointer to `FT_Memory`. + +2021-05-18 Alexei Podtelezhnikov + + Prioritize the anti-aliasing renderer module. + + * modules.cfg: Reorder the renderers. + * include/freetype/config/ftmodule.h: Ditto. + +2021-05-16 Alexei Podtelezhnikov + + [sfnt] Additional guards on the POST table. + + Fixes timeout (#1055) analyzed by Ben Wagner, reported as + + https://crbug.com/1194092 + + * src/sfnt/ttload.c (tt_face_load_post): Check POST format. + * src/sfnt/sfobjs.c (sfnt_load_face): Synthesize the missing unicode + charmap only if the glyph names exist. + * src/psnames/psmodule.c (ps_unicode_value): Short cut ".notdef" and + ".null". + +2021-05-13 Daniel McArdle + + [psaux] Use doubling allocation strategy for CF2_ArrStack. + + Fixes timeout reported as + + https://crbug.com/1206181 + + * src/psaux/psarrst.c (cf2_arrstack_{push,init}): Implement it. + * src/psaux/psarrst.h (CF2_ArrStackiRec): Drop `chunk'. + +2021-05-12 Alexei Podtelezhnikov + + * src/smooth/ftgrays.c (FT_MAX_GRAY_SPANS): Increase from 10 to 16. + + Ten was barely enough for two slanted stems. Sixteen can actually fit + a bit more complicated scanlines. + +2021-05-11 Alexei Podtelezhnikov + + * src/smooth/ftgrays.c (FT_GRAY_SET): Adjust for better code. + +2021-05-11 Alexei Podtelezhnikov + + [smooth] Faster bitmap sweeping. + + Selecting the fill rule or checking the direct mode each time we call + `gray_hline' is sub-optimal. This effectively splits the direct mode + into a separate code path while inlining `gray_hline' and saving 5-7% + of rendering time. + + * src/smooth/ftgrays.c (gray_hline): Eliminated in favor of... + (FT_FILL_RULE, FT_GRAY_SET): ... these new macros... + (gray_sweep): ... inlined here. + (gray_sweep_direct): New function that handles the direct span buffer. + (gray_TWorker): Remove the span buffer. + (gray_raster_render, gray_convert_glyph): Updated. + +2021-05-10 Alexei Podtelezhnikov + + * src/smooth/ftgrays.c (gray_hline): Simplify even-odd computations. + + It is too bad the even-odd rule is not used much. + +2021-05-07 Alexei Podtelezhnikov + + [type1] Avoid MM memory zeroing. + + * src/type1/t1load.c (t1_allocate_blend, parse_blend_design_map): + Tweak allocation macros. + * src/type1/t1objs.c (T1_Face_Done): Minor. + +2021-05-07 Alexei Podtelezhnikov + + * src/bdf/bdflib.c (_bdf_list_ensure): Tweak allocation macro. + +2021-05-06 Alexei Podtelezhnikov + + * src/psaux/psobjs.c (ps_parser_load_field): Tweak allocation macro. + +2021-05-06 Alexei Podtelezhnikov + + * src/sfnt/sfobjs.c (sfnt_load_face): Tweak allocation macro. + +2021-05-06 Alexei Podtelezhnikov + + * src/cid/cidload.c (cid_read_subrs): Tweak allocation macro. + +2021-05-06 Alexei Podtelezhnikov + + * src/base/ftrfork.c (FT_Raccess_Get_DataOffsets): Tweak allocation. + +2021-05-05 Alexei Podtelezhnikov + + [cff,psaux] Avoid memory zeroing (contd.). + + * src/cff/cffload.c (cff_blend_doBlend, cff_blend_build_vector): Tweak + allocation macros. + * src/psaux/psarrst.c (cf2_arrstack_setNumElements): Ditto. + * src/psaux/psstack.c (cf2_stack_init): Ditto. + +2021-05-04 Ben Wagner + + * src/cid/cidload.c (cid_hex_to_binary): Improve return value. + + Add argument to return the actual number of bytes that were decoded. + The actual number of bytes decoded can be quite variable depending + on the number of ignored 'whitespace' bytes or early termination + with `>`. + (cid_face_open): Updated to use this calculated value. This avoids + trusting `parser->binary_length` is always be correct and reading + uninitialized bits if fewer are actually decoded. + + First reported as + + https://crbug.com/1203240 + +2021-05-03 Alexei Podtelezhnikov + + [sfnt] Streamline POST format 2.0 handing. + + To reduce memory allocations, we read an entire Pascal-string buffer + and convert it to a C-string buffer. We also reject tables with + Postscript glyph names exceeding 63 bytes. + + * src/sfnt/ttpost.c (load_format20): Implement it. + (load_post_names): Check the minimal POST table size. + (load_format25, tt_face_free_ps_names): Updated accordingly. + +2021-05-02 Alexei Podtelezhnikov + + [bdf,pcf] Avoid memory zeroing (contd.). + + * src/bdf/bdflib.c (bdf_create_property, _bdf_add_comment, + _bdf_add_property, bdf_load_font): Tweak allocation macros. + * src/pcf/pcfread.c (pcf_get_properties, pcf_get_metrics): Ditto. + +2021-05-01 Alexei Podtelezhnikov + + * src/cid/cidload.c (cid_read_subrs): Tweak allocaton macro. + +2021-05-01 Alexei Podtelezhnikov + + [sfnt] Avoid some memory zeroing. + + * src/sfnt/sfobjs.c (sfnt_open_font, sfnt_init_face, + tt_name_ascii_from_{utf16,other}): Tweak allocaton macros. + * src/sfnt/ttload.c (tt_face_load_name): Ditto. + +2021-05-01 Alexei Podtelezhnikov + + * src/sfnt/ttpost.c (load_format_{20,25}): Tweak allocaton macros. + +2021-05-01 Alexei Podtelezhnikov + + * src/sfnt/pngshim.c (Load_SBit_Png): Tweak allocaton macro. + +2021-05-01 Alexei Podtelezhnikov + + [truetype] Avoid some memory zeroing. + + * src/truetype/ttinterp.c (Init_Context): Tweak allocation macro. + * src/truetype/ttpload.c (tt_face_load_cvt): Ditto. + +2021-05-01 Alexei Podtelezhnikov + + [woff2] Avoid some memory zeroing. + + * src/sfnt/sfwoff2.c (store_loca, woff2_open_font): Tweak macros. + +2021-04-30 Alexei Podtelezhnikov + + * src/gzip/ftgzip.c (ft_gzip_alloc): Zero out memory again. + +2021-04-27 Alexei Podtelezhnikov + + [lzw] Preserve decompression stack when relocating to heap. + + * src/lzw/ftzopen.c (ft_lzwstate_stack_grow): Copy stack when + relocating to heap. + +2021-04-27 Alexei Podtelezhnikov + + * src/cid/cidgload.c (cid_load_glyph): Restore the glyph_length check. + +2021-04-27 Werner Lemberg + + * src/psmodule.c (ps_unicodes_init): Ignore empty glyph names. + + Reported as + + https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33637 + +2021-04-26 Alexei Podtelezhnikov + + * src/sfnt/sfobjs.c (sfnt_init_face): Revert macro change. + +2021-04-26 Alexei Podtelezhnikov + + [cff] Avoid some memory zeroing. + + * src/cff/cffparse.c (cff_parser_init): Tweak memory macro. + * src/cff/cffload.c (cff_index_load_offsets, cff_index_get_pointers, + cff_charset_load, cff_vstore_load): Ditto. + +2021-04-26 Alexei Podtelezhnikov + + [pfr] Avoid some memory zeroing. + + * src/pfr/pfrobjs.c (pfr_face_init) : Tweak memory macro. + * src/pfr/pfrload.c (pfr_extra_item_load_stem_snaps, + pfr_phy_font_load): Ditto. + +2021-04-26 Alexei Podtelezhnikov + + * src/winfonts/winfnt.c (FNT_Face_Init): Tweak memory macro. + +2021-04-26 Alexei Podtelezhnikov + + [psaux,psnames] Avoid some memory zeroing. + + * src/psaux/psstack.c (cf2_stack_init): Tweak memory macro. + * src/psnames/psmodule.c (ps_unicodes_init): Ditto. + +2021-04-25 Alexei Podtelezhnikov + + [base] Avoid some memory zeroing. + + * src/base/ftrfork.c (FT_Raccess_Get_DataOffsets): Use FT_QNEW_ARRAY. + * src/base/ftsnames.c (FT_Get_Sfnt_{Name,LangTag}): Ditto. + +2021-04-25 Alexei Podtelezhnikov + + [bdf,pcf] Avoid some memory zeroing. + + * src/pcf/pcfread.c (pcf_read_TOC, pcf_get_properties, pcf_load_font): + Tweak memory macros. + * src/bdf/bdfdrivr.c (BDF_Face_Init): Ditto. + * src/bdf/bdflib.c (_bdf_readstreami, bdf_create_property, + _bdf_parse_glyphs, _bdf_parse_start): Ditto. + (_bdf_add_property): Do not handle zero size. + +2021-04-25 Issam E. Maghni + + * builds/meson/process_ftoption_h.py: Add LF at EOF. + + This fixes + + .../ftoption.h:1030:10: error: + no newline at end of file [-Werror,-Wnewline-eof] + + for the generated `ftoption.h` file. + +2021-04-24 Alexei Podtelezhnikov + + * src/cff/cffload.c (cff_index_get_pointers): s/FT_QALLOC/FT_ALLOC/. + +2021-04-23 Alexei Podtelezhnikov + + * src/base/ftobjs.c (Mac_Read_POST_Resource): s/FT_ALLOC/FT_QALLOC/. + * builds/mac/ftmac.c (FT_New_Face_From_SFNT, read_lwfn): Ditto. + +2021-04-23 Alexei Podtelezhnikov + + * src/sdf/ftsdf.c (sdf_{edge,contour,shape}_new): Use FT_QALLOC. + +2021-04-23 Alexei Podtelezhnikov + + [sfnt] s/FT_ALLOC/FT_QALLOC/ for initialized buffers. + + * src/sfnt/sfdriver.c (get_win_string, get_apple_string, + sfnt_get_var_ps_name): Do not zero out the buffer. + * src/sfnt/sfobjs.c (sfnt_init_face): Ditto. + * src/sfnt/sfwoff.c (woff_open_font): Ditto. + * src/sfnt/sfwoff2.c (woff2_open_font): Ditto. + +2021-04-23 Alexei Podtelezhnikov + + [cff,type1,type42] s/FT_ALLOC/FT_QALLOC/ for initialized buffers. + + * src/cff/cffload.c (cff_index_get_pointers, cff_index_get_name): + Do not zero out the buffer. + * src/cff/cffdrivr.c (cff_ps_get_font_info): Ditto. + * src/type1/t1load.c (parse_subrs, parse_charstrings, + parse_blend_axis_types): Ditto. + * src/type1/t1parse.c (T1_New_Parser, T1_Get_Private_Dict): Ditto. + * src/type42/t42parse.c (t42_parser_init): Ditto. + +2021-04-23 Alexei Podtelezhnikov + + [cid] s/FT_ALLOC/FT_QALLOC/ and clean up. + + * src/cid/cidgload.c (cid_load_glyph): Do not zero out the buffer. + * src/cid/cidload.c (cid_face_open, cid_read_subrs): Ditto. + +2021-04-23 Alexei Podtelezhnikov + + [pfr] s/FT_ALLOC/FT_QALLOC/ for initialized buffers. + + * src/pfr/pfrload.c (pfr_extra_item_load_font_id, pfr_aux_name_load): + Do not zero out the buffer. + +2021-04-23 Alexei Podtelezhnikov + + [bzip2,gzip] s/FT_ALLOC/FT_QALLOC/ for initialized buffers. + + * src/bzip2/ftbzip2.c (ft_bzip2_alloc): Do not zero out the buffer. + * src/gzip/ftgzip.c (ft_gzip_alloc, FT_Stream_OpenGzip): Ditto. + +2021-04-23 Alexei Podtelezhnikov + + [pcf,bdf,winfonts] s/FT_ALLOC/FT_QALLOC/ for initialized buffers. + + * src/pcf/pcfread.c (pcf_interpret_style): Do not zero out the buffer. + * src/bdf/bdfdrivr.c (bdf_interpret_style): Ditto. + * src/winfonts/winfnt.c (FNT_Face_Init, FNT_Load_Glyph): Ditto. + +2021-04-22 Alexei Podtelezhnikov + + [cache] Optimize SBit copying. + + * src/cache/ftcsbits.c (ftc_snode_load): Do not initialize the buffer. + (ftc_sbit_copy_bitmap): Accept zero size, s/FT_ALLOC/FT_QALLOC/. + +2021-04-22 Alexei Podtelezhnikov + + [gxvalid,otvalid] s/FT_ALLOC/FT_QALLOC/ for initialized buffers. + + * src/gxvalid/gxvmod.c (gxv_load_table): Do not zero out the buffer. + * src/otvalid/otvmod.c (otv_load_table): Ditto. + +2021-04-22 Alexei Podtelezhnikov + + [psaux] s/FT_ALLOC/FT_QALLOC/ for initialized buffers. + + * src/psaux/psobjs.c (ps_table_done, ps_parser_load_field): Do not + zero out the buffer. + +2021-04-22 Alexei Podtelezhnikov + + [base] s/FT_ALLOC/FT_QALLOC/ for initialized buffers. + + * src/base/ftobjs.c (open_face_PS_from_sfnt_stream, + Mac_Read_sfnt_Resource): Do not zero out the buffer. + * src/base/ftmac.c (FT_New_Face_From_SFNT, read_lwfn): Ditto. + * src/base/ftrfork.c (raccess_make_file_name, + raccess_guess_darwin_hfsplus, raccess_guess_darwin_newvfs): Ditto. + +2021-04-20 Alexei Podtelezhnikov + + [cache] Restore SBit copying for unowned (BDF) bitmaps. + + * src/cache/ftcsbits.c (ftc_sbit_copy_bitmap): Restore. + (ftc_snode_load): Check ownership and copy unowned bitmaps. + +2021-04-19 Dominik Röttsches + + [sfnt] Return in 'COLR' v1 when layer pointer outside table + + * src/sfnt/ttcolr.c (tt_face_get_paint_layers): Add missing return + when paint pointer outside table. + (read_paint): Add missing return when paint pointer outside table. + +2021-04-18 Alexei Podtelezhnikov + + [cache] Switch to lazy SBit setting. + + * src/cache/ftcsbits.c (ftc_sbit_copy_bitmap): Removed. + (ftc_snode_load): Take the bitmap ownership instead of copying. + +2021-04-16 Daniel Welty <@danielwelty> + + * src/cache/ftcsbits.c (ftc_snode_load): Properly handle short pitch. + +2021-04-16 Werner Lemberg + + * builds/unix/freetype2.m4: Fix help string formatting. + + The indented `dnl` macros inserted unwanted horizontal space. + + Problem reported by Ozkan Sezer . + +2021-04-16 Dominik Röttsches + + [sfnt] Safeguard 'COLR' v1 layer extraction + + * src/sfnt/ttcolr.c (tt_face_get_paint_layers): Do not output + layer pointer to iterator if it is outside the 'COLR' table. + (read_paint): Do not attempt to read layers that are outside the + table. + +2021-04-02 Ben Wagner + + [base] Complete `ft_glyphslot_clear`. + + * src/base/ftobjs.c (ft_glyphslot_clear): This function is intended + to reset all the values of a glyph slot. However, it was not + resetting the values of the advances and `glyph_index`. Reset the + advances and `glyph_index` to zero. + +2021-04-02 Ben Wagner + + [truetype] Prevent glyph program state from persisting. + + `FDEF` instructions are specified as allowed only in 'prep' or + 'fpgm'. FreeType has attempted to prevent their use in the glyph + program, but they were still allowed in glyph programs if defined in + a function defined in 'prep' or 'fpgm' and called from the glyph + program. + + Similarly, `IDEF` instructions are specified not to be able to + modify any existing instruction. FreeType has attempted to prevent + their use in the glyph program, but they can still be used like + `FDEF`. + + This change stores the initial bytecode range type and disallows the + use of `FDEF` and `IDEF` while running the glyph program. + + Most other state is copied from the `TT_Size` into the execution + context. However, it is possible for a glyph program to use `WS` to + write to the storage area or `WCVTP`, `WCVTF`, and `DELTAC[123]` to + write to the control value table. + + Allowing any change to the global state from the glyph program is + problematic as the outlines of any given glyph may change based on + the order the glyphs are loaded or even how many times they are + loaded. There exist fonts that write to the storage area or the + control value table in the glyph program, so their use should not be + an error. + + Possible solutions to using these in the glyph program are + + * ignore the writes; + * value-level copy on write, discard modified values when finished; + * array-level copy on write, discard the copy when finished; + * array-level copy up-front. + + Ignoring the writes may break otherwise good uses. A full copy + up-front was implemented, but was quite heavy as even well behaved + fonts required a full copy and the memory management that goes along + with it. Value-level copy on write could use less memory but + requires a great deal more record keeping and complexity. This + change implements array-level copy on write. If any attempt is made + to write to the control value table or the storage area when the + initial bytecode range was in a glyph program, the relevant array + will be copied to a designated storage area and the copy used for + the rest of the glyph program's execution. + + * src/truetype/ttinterp.h (TT_ExecContextRec): New fields + `iniRange`, `glyfCvtSize`, `glyfCvt`, `origCvt`, `glyfStoreSize`, + `glyfStorage`, and `origStorage`. + + * src/truetype/ttinterp.c (Modify_CVT_Check): New function to handle + `exc->glyfCvt`. + (Write_CVT, Write_CVT_Stretched, Move_CVT, Move_CVT_Stretched): Use + it. + (Ins_WS): Handle `exc->glyfStorage`. + (Ins_FDEF, Ins_IDEF): Updated. + (TT_RunIns): Updated. + (TT_Done_Context): Free 'glyf' CVT working and storage area. + (TT_Load_Context): Fix/add casts. + + * src/truetype/ttgload.c (TT_Load_Simple_Glyph): Fix cast. + +2021-03-30 Dominik Röttsches + + [sfnt] Check validity of pointer location of `read_color_line`. + + * src/sfnt/ttcolr.c (get_child_table_pointer): New function to fetch + child table pointer early for all paint formats that compute a child + table pointer. + (read_color_line, read_paint): Updated. + (tt_face_get_colorline_stops): Check `colr->table`. + +2021-03-28 Nikhil Ramakrishnan + + [docs] Update docwriter stylesheet for 1.3.1. + + This change is required to support docwriter 1.3.1. + + See + + https://gitlab.freedesktop.org/freetype/docwriter/-/merge_requests/101 + + for more information. + + * docs/markdown/stylesheets/extra.css: + (.wy-nav-content, .md-sidebar--secondary): Remove. + +2021-03-16 Alexei Podtelezhnikov + + * src/sfnt/pngshim.c (Load_SBit_Png): Free `rows` once later. + +2021-03-16 Ben Wagner + + [sfnt] Fix memory leak in png loading. + + Reported as + + https://bugs.chromium.org/p/chromium/issues/detail?id=1182552 + + Memory is allocated and the pointer assigned to `rows` inside a + 'setjmp' scope. This memory must be freed outside the 'setjmp' + scope after a 'longjmp'. Since `rows` is a local and modified + inside the 'setjmp' scope it must be marked volatile or it will have + an indeterminate value after the 'longjmp'. + + * src/sfnt/pngshim.c (Load_SBit_Png): Fix memory leak of `rows`. + +2021-03-16 Christopher Degawa + + * CMakeLists.txt: Don't limit generation of 'pkg-config' file to UNIX. + + mingw-w64 uses the 'pkg-config' files but does not set UNIX. + +2021-03-11 Alexei Podtelezhnikov + + * src/smooth/ftgrays.c (gray_set_cell): Refactor to fix VC++ warning. + +2021-03-13 Werner Lemberg + + Handle various VC++ compiler warnings. + + Fixes #1039. + + * src/base/ftstroke.c (ft_stroker_inside, ft_stroker_outside): + Initialize `sigma`. + + * src/sdf/ftsdf.c (sdf_generate_with_overlaps): Exit immediately if + function arguments are invalid. + * src/sdf/ftsdfrend.c (sdf_property_set) <"overlaps">: Fix cast. + + * src/sfnt/sfwoff2.c (woff2_decompress) + [!FT_CONFIG_OPTION_USE_BROTLI]: Use `FT_UNUSED`. + + * src/truetype/ttgxvar.c (TT_Get_MM_Var): Initialize `fvar_head`. + +2021-03-11 Alexei Podtelezhnikov + + [smooth] Reduce copying during integration phase. + + We now record `cover' and `area' directly into the linked list. This + makes rendering faster by 10% or even more at larger sizes. + + * src/smooth/ftgrays.c (FT_INTEGRATE): Write directly. + (gray_TWorker): Add direct cell reference and remove unused fields. + (gray_set_cell): Consolidate the linked list management and pointers. + (gray_convert_glyph, gray_convert_glyph_inner): Updated. + +2021-03-10 Alexei Podtelezhnikov + + * src/smooth/ftgrays.c (FT_INTEGRATE): New convenience macro. + (gray_render_line, gray_render_scanline): Use it. + +2021-03-09 Alexei Podtelezhnikov + + * src/smooth/ftgrays.c (gray_render_line): Rearrange conditionals. + + These produce faster or more optimizable code. + +2021-03-08 Tim-Philipp Müller + + [meson] Fix 'mmap' handling on Windows. + + * meson.build (ft2_sources): Always use `windows/ftsystem.c` on + Windows unless mmap has been disabled. + + https://gitlab.freedesktop.org/freetype/freetype/-/merge_requests/5#note_829289 + +2021-03-07 Tim-Philipp Müller + + [ci] Add basic support for Meson builds with MSVC on Windows. + + This adds meson jobs for VS2017 (x86 and x86_64). + + * .gitlab-ci.yml: New file. + +2021-03-07 Tim-Philipp Müller + + [meson] Add subproject fallbacks for 'libpng' and 'zlib'. + + * subprojects/libpng.wrap, subprojects/zlib.wrap: New files. + + * meson.build: Updated. + +2021-03-07 Xavier Claessens + + [meson] Make it work with Windows. + + * meson.build: Do not process `ftconfig.h` when not using + `ftconfig.h.in`. + + Fixes #1029. + +2021-02-25 Werner Lemberg + + [woff2] Fix memory leak. + + Reported as + + https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28148 + + * src/sfnt/sfwoff2.c (woff2_open_font): Reject fonts that have + multiple tables with the same tag. While not explicitly forbidden + in the OpenType specification, it is implicitly forbidden by + describing a binary search algorithm for tables that only works + reliably if table tags are unique. + +2021-02-22 Werner Lemberg + + * CMakeLists.txt: Update location of `LICENSE.TXT`. + + Fixes #1035. + +2021-02-19 Werner Lemberg + + * builds/unix/ax_pthread.m4: Update from 'autoconf-archive'. + + A bunch of fixes were added recently to its git repository. + +2021-02-17 Werner Lemberg + + [unix] Updates for autoconf 2.71. + + This fixes warnings reported by autoupdate. + + * builds/unix/ax_pthread.m4: Replace `as_echo` with `AS_ECHO`. + + * builds/unix/configure.raw: Remove obsolete `AC_HEADER_STDC`. + Don't escape back quotes in messages for `AC_MSG_WARN`. + +2021-02-16 Werner Lemberg + + * builds/toplevel.mk: Fix previous commit. + + : Use `TOP_DIR` in `wildcard` function. + (check_out_submodule, copy_submodule): Move down to come after + definition of `all` rule. + Call `mkdir` conditionally. + +2021-02-16 Werner Lemberg + + * builds/toplevel.mk: Use rules for handling 'dlg'. + + Suggested by Alexei. + + (check_out_submodule, copy_submodule): New targets. + : Replace calls to `shell` with rules. + +2021-02-16 Werner Lemberg + + * builds/toplevel.mk: Avoid side effects of `shell`. + + We use a dummy variable to catch its output. Otherwise the `make` + program is going to interpret the return value of `shell`; this can + cause obscure warning or error messages or even be harmful. + +2021-02-16 Werner Lemberg + + Move 'dlg' submodule to `subprojects` directory. + + This is for future changes with Meson, which doesn't allow a + different name for its `subprojects` directory. Having both a + `submodules` and a `subprojects` directory is confusing. + + * .gitmodules, autogen.sh (copy_submodule_files, DLG_INC_DIR, + DLG_SRC_DIR): Updated. + + * builds/toplevel.mk (, do-dist), + builds/windows/vc2010/script.bat: Updated. + + * src/tools/no-copyright: Updated. + +2021-02-16 Dominik Röttsches + + [sfnt] Update paint format values to support non-variable paints. + + * freetype.h (FT_PaintFormat): Update paint format identifiers after + a specification change. The specification was updated to have + sibling formats, variable and non-variable variants for each. + Reflect that here. + + * sfnt/ttcolr.c (read_paint): Remove parsing of variable indices as + the non-variable formats no longer have them. + +2021-02-15 Daniel E + + * CMakeLists.txt: Improve 'bz2' support. + + Not all distributions such as FreeBSD provide a `.pc` file for + '(lib)bz2' so follow autotools and add it to `Libs.private` instead. + +2021-02-13 Werner Lemberg + + * src/tools/update-copyright-year: Fix single-year entry handling. + + The fix from 2021-01-17 didn't cover the case where the year to be + updated is identical to the current year. + +2021-02-13 Werner Lemberg + + Add new function `FT_Get_Transform`. + + See + + https://github.com/harfbuzz/harfbuzz/issues/2428 + + for some reasons to introduce this function. + + * include/freetype/freetype.h, src/base/ftobjs.c (FT_Get_Transform): + Implement it. + +2021-02-12 Alexei Podtelezhnikov + + Decorate `qsort` callbacks with `cdecl`. + + * include/freetype/internal/compiler-macros.h (FT_COMPARE_DEF): + Add new macro. + + * src/base/ftrfork.c, src/bdf/bdflib.c, src/gxvalid/gxvcommn.c, + src/psaux/afmparse.c, src/psnames/psmodule.c, src/type1/t1afm.c, + src/sfnt/sfwoff.c, src/sfnt/sfwoff2.c: Update `qsort` callbacks. + + Fixes #1026 when compiling FreeType with an unusual calling + convention while the C library function `qsort` still expects + `cdecl`. + +2021-02-10 Dominik Röttsches + + [sfnt] Implement 'COLR' v1 sweep gradients. + + * freetype.h (FT_PaintSweepGradient): Add `FT_PaintSweepGradient` to + represent a 'COLR' v1 sweep gradient. + Update format. + (FT_PaintFormat): Update shifted paint formats. + Sync with spec. + * sfnt/ttcolr.c (read_paint): Logic to parse sweep gradients. + Fix struct access in radial gradient implementation. + +2021-02-09 Dominik Röttsches + + [sfnt] Provide optional root transform for 'COLR' v1 glyph graph. + + * include/freetype/freetype.h (FT_Get_Color_Glyph_Paint): + Additional function argument `root_transform` to control whether + root transform should be returned. + (FT_OpaquePaint): Additional tracking field to denote whether + root transform is to be returned. + * include/freetype/internal/sfnt.h + (TT_Get_Color_Glyph_Paint_Func): Propagate additional argument. + * src/base/ftobjs.c (FT_Get_Color_Glyph_Paint): Ditto. + * src/sfnt/ttcolr.c (tt_face_get_colr_glyph_paint): Return root + transform reflecting the size and tranform configured on + `FT_Face`. + (read_paint): Initialize and track status of insert_root_transform + flag. + +2021-02-09 Xavier Claessens + + * meson.build: s/freetype2_dep/freetype_dep/. + + Many projects (e.g., fontconfig, cairo) hardcode the `freetype_dep` + variable name to use FreeType as subproject because that was the + variable name in Centricular's Meson port of FreeType. While they + should stop hardcoding that variable name, it does not cost us + anything to keep using that name to ease transition. + +2021-02-09 Xavier Claessens + + [meson] Fix handling of HarfBuzz library. + + * meson.build (harfbuzz_dep): Do not fall back to HarfBuzz by + default. + + Otherwise it causes a dependency cycle: + + cairo => fontconfig => freetype2 => harfbuzz => cairo + + Meson will still fall back to HarfBuzz subprojects if the `harfbuzz` + option is set to `enabled` instead of `auto` and a + `subprojects/harfbuzz.wrap` file is present. In that case it is the + responsibility of the main project to set the proper options on each + subproject to break the dependency cycle. + + Fixes: #1028. + +2021-02-09 Xavier Claessens + + [meson] Fix dependency lookup and generate `ftconfig.h`. + + - zlib: If not found on the system, meson can build it as a + subproject. We thus never use the (outdated) zlib support that + comes with FreeType. Doing so has the additional advantage that + the zlib code can be shared with other projects like GLib if both + are subprojects of an application. + - harfbuzz: Build as a subproject if not found on the system. + - 'QUESTION: What if the compiler doesn't support `-D` but uses `/D` + instead as on Windows?' Answer: Meson translate arguments for us. + - visibility: Replace self-made code with meson-specific solution. + + * meson.build (ft2_defines): Rewrite logic to set and handle it. + (process_header_command): New variable, previously called + `ftoption_command`. + (ftoption_command, ftconfig_command): New variables. + (zlib_option): Removed. + (zlib_dep): New variable. + (ft2_deps): Updated. + (harfbuzz_dep): Updated. + (ftconfig_h_in, ftconfig_h): New variables. + (ft2_sources): Updated. + (ft2_lib): Updated, handle visibility. + (summary): Updted. + + * meson_options.txt (zlib): Updated. + +2021-02-09 Xavier Claessens + + * meson.build: Fix resource compilation on Windows. + + This is copied from GStreamer's meson port of FreeType. + + (ft2_sources): Add both debug and resource file (the latter for + Windows only). + (ft2_debug_src): Removed. + +2021-02-09 Xavier Claessens + + * meson.build: s/ft2_libtool_version/ft2_pkgconfig_version/. + + (freetype2_dep): Use it. + + `ft2_libtool_version` would be the shared library version, not the + one we should use in file `freetype2.pc`. + +2021-02-09 Xavier Claessens + + * meson.build: Use `meson.override_dependency`. + + This is a new meson mechanism to avoid other projects to hard-code + the `freetype2_dep` variable name in their build definition. It + also ensures that meson does not mix system and subproject versions + of FreeType inside of the same project. + + Also remove outdated TODO because `declare_dependency` was already + there. + +2021-02-09 Xavier Claessens + + * meson.build (bzip2_dep): Simplify. + + We remove `static:false` from `find_library('bz2')`. + + I don't know whether the previous code was a workaround for an old + meson bug, but at least with version >=0.55.0 (which FreeType uses) + it picks the shared library when both are available. + + File `freetype2.pc` still contains the full path to file `libbz2.so` + instead of `-lbz2` – that we need to do this is a meson bug even + present in the current version (0.57.0). + +2021-02-09 Xavier Claessens + + * meson.build: Set project version. + +2021-02-04 Werner Lemberg + + [base] Fix Netpbm tracing message. + + * src/base/ftobjs.c (FT_Render_Glyph_Internal): Don't emit Netpbm + warning if there is nothing to output. + +2021-02-04 Werner Lemberg + + * src/*: Don't use more than one '\n' in `FT_TRACE` and `FT_ERROR`. + + This ensures good logging output, with all lines having a proper + prefix (if requested). + + This is a continuation of a similar patch from 2020-12-02, which + missed some locations. + +2021-02-03 Alexei Podtelezhnikov + + * builds/unix/configure.raw [mmap]: Restore default path. + + Fixes #1023. + +2021-02-03 Werner Lemberg + + [psaux] Fix integer overflow. + + Reported as + + https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30154 + + * src/psaux/psblues.c (cf2_blues_capture): Use `SUB_INT32`. + +2021-02-02 Alexei Podtelezhnikov + + * builds/unix/configure.raw [mmap support]: Explicitly handle Windows. + + Fixes #1024. + +2021-01-31 Werner Lemberg + + * builds/unix/configure.raw [mmap support]: Correctly handle Windows. + + Fixes #1024. + +2021-01-31 Werner Lemberg + + * builds/windows/ftdebug.c: Synchronize with `src/base/ftdebug.c`. + +2021-01-31 Werner Lemberg + + Always provide logging API. + + It's easier to have stubs if FT_DEBUG_LOGGING is undefined than to + modify `ftexport.sym` conditionally. + + Problem reported by Alexei. + + * src/base/ftdebug.c: Include `ftlogging.h`. + (FT_Trace_Set_Level, FT_Trace_Set_Default_Level, FT_Set_Log_Handler, + FT_Set_Default_Log_Handler) [!FT_DEBUG_LOGGING]: Provide stubs. + +2021-01-31 Werner Lemberg + + * builds/unix/configure.raw: Fix typo. + + Bug introduced in Vincent's last commit bb33f03. + + Fixes issue #1021. + +2021-01-27 Alexei Podtelezhnikov + + * src/base/ftstroke.c (FT_Stroker_EndSubPath): Ignore tiny gaps. + + Fixes bug #1020. + +2021-01-27 Alexei Podtelezhnikov + + [stroker] Minor clean-up. + + * src/base/ftstroke.c (FT_Stroker_{ConicTo,CubicTo}): Reset the last + line length. + (FT_Stroker_EndSubPath): Call `ft_stroker_process_corner'. + +2021-01-27 Vincent Torri + + * builds/windows/ftsystem.c: Add shared memory support on Windows. + + * CMakeLists.txt (BASE_SRCS), builds/unix/configure.raw (FTSYS_SRC), + builds/windows/vc2010/freetype.vcxproj, + builds/windows/visualc/freetype.vcproj, meson.build (ft2_sources): + Add it (conditionally). + +2021-01-23 Werner Lemberg + + Require HarfBuzz 2.0.0. + + This is needed to make commit f1f9705f9 work. + + * CMakeLists.txt (HARFBUZZ_MIN_VERSION), builds/unix/configure.raw + (harfbuzz_pkg), meson.build (harfbuzz_dep): Updated. + +2021-01-22 Alexei Podtelezhnikov + + * autogen.sh: Absorb `version.sed'. + * version.sed: Removed. + +2021-01-19 Alexei Podtelezhnikov + + * srd/base/ftlcdfil.c (FT_Library_SetLcdGeometry): Fix return value. + +2021-01-15 Nikolaus Waxweiler + + [afshaper] Fix hb_ot_tags_from_script deprecation warning. + + * autofit/afshaper.c (af_shaper_get_coverage): Copy the source code + of the function as suggested in + https://github.com/harfbuzz/harfbuzz/issues/2737 and adjust to handle + at most three tags. + +2021-01-17 Werner Lemberg + + * src/tools/update-copyright-year: Fix single-year entry handling. + +2021-01-16 Alexei Podtelezhnikov + + * builds/unix/unixddef.mk: Remove the second DEVEL_DIR definition. + +2021-01-14 Dominik Röttsches + + [sfnt] Additional checks for 'colr' table presence. + + * sfnt/ttcolr.c (tt_face_get_colr_glyph_paint, + tt_face_get_colorline_stops, tt_face_get_paint): Additional checks + for whether colr table is present. Prevents crashes when these + methods are called on non-COLR fonts. + +2021-01-13 Dominik Röttsches + + Add config option to test for 'COLR' v1 support in headers. + + * include/freetype/config/ftoption.h (TT_SUPPORT_COLRV1): New macro + so that clients can test whether the FreeType checkout that they are + building against supports the 'COLR' v1 API. This is intended to be + a temporary solution until 'COLR' v1 support is released in a + FreeType version and such a check can be made by using the version + number instead. + +2020-12-16 Dominik Röttsches + + [base] Fill 'COLR' v1 API templates to make them work (#59703). + + * src/base/ftobjs.c (FT_Get_Color_Glyph_Paint, FT_Get_Paint_Layers, + FT_Get_Paint, FT_Get_Colorline_Stops): Add basic sanity checks, + check for existence of `FT_Face`, check arguments and delegate calls + for the respective 'COLR' v1 API to the SFNT driver. + +2020-12-16 Dominik Röttsches + + [sfnt] Register 'COLR' v1 API in driver (#59703). + + * include/freetype/internal/sfnt.h (TT_Get_Color_Glyph_Paint_Func, + TT_Get_Paint_Layers_Func, TT_Get_Colorline_Stops_Func, + TT_Get_Paint_Func): New function pointer types. + (SFNT_Interface): Add them. + (FT_DEFINE_SFNT_INTERFACE): Updated. + + * src/sfnt/sfdriver.c (PUT_COLOR_LAYERS_V1): New macro. + (sfnt_interface): Add new function pointers. + +2020-12-16 Dominik Röttsches + + [sfnt] Add 'COLR' v1 API to retrieve color layers (#59703). + + * src/sfnt/ttcolr.c (tt_face_get_paint_layers): New function to get + the layers of a `PaintColrLayers` table in the font, using an + `FT_LayerIterator` from an `FT_PaintColrLayers` object retrieved via + `tt_face_get_paint`. + + * src/sfnt/ttcolr.h: Updated. + +2020-12-16 Dominik Röttsches + + [sfnt] Add 'COLR' v1 API to iterate color stops (#59703). + + * src/sfnt/ttcolr.c (tt_face_get_colorline_stops): New function to + return the current `FT_ColorStop` object from `FT_ColorStopIterator`. + Also increment the iterator. + + * src/sfnt/ttcolr.h: Updated. + +2020-12-16 Dominik Röttsches + + [sfnt] Add API to get actual paint from `FT_OpaquePaint` (#59703). + + * src/sfnt/ttcolr.c (tt_face_get_paint): New function to resolve an + `FT_OpaquePaint` paint reference into an `FT_COLR_Paint` object of a + certain format, which contains the detailed information stored in a + paint of the respective format. + (read_paint): New function to provide the format specific parsing + and to populate the data members of each specific `FT_COLR_Paint` + subtype. + (read_color_line): New function to parse retrieved color line + information into an `FT_ColorLine` object, which has information + about the color line extend mode as well as an + `FT_ColorStopIterator` object. + + * src/sfnt/ttcolr.h: Updated. + +2020-12-16 Dominik Röttsches + + [sfnt] Add API to retrieve 'COLR' v1 root paint (#59703). + + * src/sfnt/ttcolr.c (BaseGlyphV1Record): New structure. + (tt_face_load_colr): Handle version 1 table header. + (find_base_glyph_v1_record): New auxiliary function. + (tt_face_get_colr_glyph_paint): New function to find the root + `FT_OpaquePaint` object for a given glyph ID. + + * src/sfnt/ttcolr.h: Updated. + +2020-12-16 Dominik Röttsches + + Add new methods required for 'COLR' v1 to public API (#59703). + + * include/freetype/freetype.h (FT_Get_Color_Glyph_Paint): New method + for retrieving the root paint object for a color glyph by specifying + a glyph ID. + (FT_Get_Paint_Layers): New method for retrieving the layers of a + `PaintColorGlyph`. + (FT_Get_ColorLine_Stops): New method for retrieving the stops of a + color. + (FT_Get_Paint): New method for resolving an `FT_OpaquePaint` into an + `FT_COLR_Paint` object. + +2020-12-16 Dominik Röttsches + + Add types required for 'COLR' v1 to public API (#59703). + + * include/freetype/freetype.h (FT_PaintFormat, FT_ColorStopIterator, + FT_ColorIndex, FT_ColorStop, FT_PaintExtend, FT_ColorLine, + FT_Affine23, FT_CompositeMode, FT_OpaquePaint, FT_PaintColrLayers, + FT_PaintSolid, FT_PaintLinearGradient, FT_PaintRadialGradient, + FT_PaintGlyph, FT_PaintColrGlyph, FT_PaintTransformed, + FT_PaintTranslate, FT_PaintRotate, FT_PaintSkew, FT_PaintComposite, + FT_COLR_Paint): Adding structs and enum to represent paint format, + color stop information, gradient extend information, structs to + reference paint offsets, and to define transforms and compositions. + Adding a union type to represent the union of the structs, + distinguished by `FT_PaintFormat`. + +2021-01-10 Werner Lemberg + + * builds/*: s/BUILD_DIR/PLATFORM_DIR/. + + The old variable name caused confusion. + +2021-01-08 Alexei Podtelezhnikov + + [builds] Revert `FTMODULE_H' changes. + + * builds/toplevel.mk, builds/freetype.mk: Revert changes. + +2021-01-07 Alexei Podtelezhnikov + + [builds/windows] Fix up DLG build with VC++. + + * builds/windows/vc2010/script.bat: Copy headers to include/. + * builds/windows/vc2010/freetype.vcxproj: Remove DLG paths. + +2021-01-07 Alexei Podtelezhnikov + + [builds] Relocate `FTMODULE_H'. + + * builds/toplevel.mk: Place `FTMODULE_H' in include/. + * builds/freetype.mk: Simplify included path. + +2021-01-07 Werner Lemberg + + Fix ABI incompatibility. + + * include/freetype/ftimage.h (FT_Pixel_Mode): Don't insert + `FT_PIXEL_MODE_GRAY16' but append it. + + * src/base/ftobjs.c (pixel_modes): Updated. + +2021-01-07 Alexei Podtelezhnikov + + [dlg] Move the headers to include/dlg to simplify their use. + + * autogen.sh, builds/toplevel.mk: Copy headers to include/dlg. + * builds/freetype.mk, builds/windows/vc2010/freetype.vcxproj: + Simplify included path. + * include/freetype/internal/ftdebug.h: Simplify #include. + * src/dlg/rules.mk, .gitignore: Updated. + +2021-01-06 Werner Lemberg + + * meson.build: Add summary. + + Based on a patch from Vincent Torri . + +2021-01-06 Torsten Hilbrich + + * meson.build: Fix 'png' build option (#59458). + + Without this patch, 'png' is always required. + +2021-01-04 Alexei Podtelezhnikov + + [builds/windows] Add SDF to VC2010 project. + + * builds/windows/vc2010/freetype.vcxproj: Updated; + AfterBuild conveniences. + +2020-12-26 Werner Lemberg + + [sdf] Use 'counter-clockwise', not 'anti-clockwise'. + + We prefer US nomenclature. + + * src/sdf/ftsdf.c (SDF_Contour_Orientation): + s/SDF_ORIENTATION-ACW/SDF_ORIENTATION_CCW/. + Update all users. + +2020-12-26 Werner Lemberg + + * src/base/ftobjs.c (pixel_modes): Updated. + +2020-12-26 Anuj Verma + + [sdf] Remove custom memory tracker. + + The internal FreeType memory tracker is sufficient. + + * src/sdf/ftsdf.c (FT_DEBUG_INNER, FT_ASSIGNP_INNER, SDF_MemoryUser, + sdf_alloc, sdf_free, SDF_ALLOC, SDF_FREE, + SDF_MEMORY_TRACKER_DECLARE, SDF_MEMORY_TRACKER_SETUP, + SDF_MEMORY_TRACKER_DONE): Removed. + + s/SDF_ALLOC/FT_ALLOC/. + s/SDF_FREE/FT_FREE/. + + Other updates. + +2020-12-24 Werner Lemberg + + [sdf] Fix `make multi`. + + * src/sdf/ftsdf.c: Include `ftoutln.h`. + +2020-12-24 Werner Lemberg + + [sdf] Fix tracing. + + * include/freetype/internal.fttrace.h: Add 'bsdf' component. + + * src/sdf/ftbsdf.c, src/sdf/ftsdf.c (FT_COMPONENT): Define. + +2020-08-21 Anuj Verma + + [sdf] Add debugging function. + + * src/sdf/ftsdf.c (sdf_shape_dump): New function. + +2020-08-20 Anuj Verma + + [sdf] Add 'bsdf' renderer to 'sdf' module. + + * src/sdf/ftsdfrend.c (ft_bsdf_render): New function. + + (ft_bitmap_sdf_renderer_class): New structure. + +2020-08-20 Anuj Verma + + [sdf] Add interface functions for the 'bsdf' rasterizer. + + * src/sdf/ftsdf.c (bsdf_raster_new, bsdf_raster_reset, + bsdf_raster_set_mode, bsdf_raster_render, bsdf_raster_done): New + functions. + + (ft_bitmap_sdf_raster): New variable. + + * src/sdf/ftsdf.h: Updated. + +2020-08-20 Anuj Verma + + [sdf] Add function to copy SDF data into output bitmap. + + * src/sdf/ftbsdf.c (finalize_sdf): New function. + +2020-08-20 Anuj Verma + + [sdf] Add '8-point sequential Euclidean distance mapping' algorithm. + + * src/sdf/ftbsdf.c (compare_neighbor, first_pass, second_pass, + edt8): New functions. + +2020-08-20 Anuj Verma + + [sdf] Add function to copy source bitmap to distance map. + + * src/sdf/ftbsdf.c (bsdf_init_distance_map): New function. + +2020-08-20 Anuj Verma + + [sdf] Add functions to compute pixel edge distances. + + * src/sdf/ftbsdf.c (compute_edge_distance, bsdf_approximate_edge): + New functions. + +2020-08-20 Anuj Verma + + [sdf] Add function to find edge pixels in a grid of alpha values. + + * src/sdf/ftbsdf.c (bsdf_is_edge): New function. + +2020-08-20 Anuj Verma + + [sdf] Add essential structures for the 'bsdf' rasterizer. + + * src/sdf/ftbsdf.c (ONE): New macro. + (BSDF_TRaster, ED, BSDF_Worker): New structures. + (zero_ed): New constant. + +2020-08-20 Anuj Verma + + [sdf] Add 'sdf' module to non-gnumake build systems. + + * include/freetype/config/ftmodule.h: Add both the 'sdf' and 'bsdf' + renderers to the list of modules. + + * CMakeLists.txt (BASE_SRCS): Add 'sdf' single-object module. + +2020-08-20 Anuj Verma + + [sdf] Added basic overlapping contour support. + + * src/sdf/ftsdf.c (sdf_generate_with_overlaps): New function. + (sdf_raster_render): Enable it. + +2020-08-19 Anuj Verma + + [sdf] Add build infrastructure. + + * src/sdf/module.mk, src/sdf/rules.mk: New files. + + * src/sdf/ftsdf.h (ft_sdf_raster): New forward declaration. + + * include/freetype/ftmoderr.h (FT_MODERRDEF): Add error definition + for the 'sdf' module. + + * include/freetype/internal/fttrace.h (FT_TRACE_DEF): Add trace + definition for the `sdf' module. + + * modules.cfg (RASTER_MODULES): Add the `sdf' module to the list of + rasterizers. + +2020-08-19 Anuj Verma + + [sdf] Add interface functions for the 'sdf' rasterizer. + + * src/sdf/ftsdf.c (sdf_raster_new, sdf_raster_reset, + sdf_raster_set_mode, sdf_raster_render, sdf_raster_done): New + functions. + (ft_sdf_raster): New structure. + +2020-08-19 Anuj Verma + + [sdf] Add subdivision and bounding box optimization. + + * src/sdf/ftsdf.c (sdf_generate_bounding_box): New function, which + is an optimized version of `sdf_generate`. + (sdf_generate_subdivision): New function. + +2020-08-19 Anuj Verma + + [sdf] Add function to generate SDF. + + * src/sdf/ftsdf.c (sdf_generate): New function, currently disabled. + This is a proof-of-concept implementation: It doesn't use any + optimization, it simply checks all grid points against all contours. + +2020-08-19 Anuj Verma + + [sdf] Add functions to get shortest distance from any edge/contour. + + * src/sdf/ftsdf.c (sdf_edge_get_min_distance): New function. + (sdf_contour_get_min_distance): New function, currently disabled. + +2020-08-18 Anuj Verma + + [sdf] Add shortest distance finding functions. + + * src/sdf/ftsdf.c (get_min_distance_line, get_min_distance_conic, + get_min_distance_cubic): New functions. Note that + `get_min_distance_conic` comes with two implementations (using an + analytical and an iterative method, to be controlled with the + `USE_NEWTON_FOR_CONIC` macro). + +2020-08-18 Anuj Verma + + [sdf] Add function to resolve corner distances. + + * src/sdf/ftsdf.c (resolve_corner): New function. + +2020-08-18 Anuj Verma + + [sdf] Add essential math functions. + + * src/sdf/ftsdf.c (cube_root, arc_cos) [!USE_NEWTON_FOR_CONIC]: New + auxiliary functions. + + * src/sdf/ftsdf.c (solve_quadratic_equation, solve_cubic_equation) + [!USE_NEWTON_FOR_CONIC]: New functions. + +2020-08-18 Anuj Verma + + [sdf] Add utility functions for contours. + + * src/sdf/ftsdf.c (get_control_box, get_contour_orientation): New + functions. + (split_conic, split_cubic, split_sdf_conic, split_sdf_cubic, + split_sdf_shape): New functions. + +2020-08-17 Anuj Verma + + [sdf] Add functions to decompose `FT_Outline`. + + * src/sdf/ftsdf.c (sdf_move_to, sdf_line_to, sdf_conic_to, + sdf_cubic_to): New auxiliary decomposition functions. + (sdf_compose_funcs): New structure. + (sdf_outline_decompose): New function. + +2020-08-17 Anuj Verma + + [sdf] Structs, enums, macros, and functions for 'sdf' rasterizer. + + * src/sdf/ftsdf.c (FT_DEBUG_INNER, FT_ASSIGNP_INNER) + [FT_DEBUG_LEVEL_TRACE && FT_DEBUG_MEMORY]: New macros. + (SDF_MemoryUser) [FT_DEBUG_LEVEL_TRACE && FT_DEBUG_MEMORY]: New + struct for memory usage tracing. + (sdf_alloc, sdf_free) [FT_DEBUG_LEVEL_TRACE && FT_DEBUG_MEMORY]: New + functions for memory usage tracing. + + (SDF_ALLOC, SDF_FREE): New macros for memory management. + (SDF_MEMORY_TRACKER_DECLARE, SDF_MEMORY_TRACKER_SETUP, + SDF_MEMORY_TRACKER_DONE): New macros to set up memory usage tracing. + + (USE_NEWTON_FOR_CONIC, MAX_NEWTON_DIVISIONS, MAX_NEWTON_STEPS, + CORNER_CHECK_EPSILON, CG_DIMEN): New configuration macros for + controlling the process of finding the shortest distance. + + (MUL_26D6, VEC_26D6_DOT): New auxiliary macros. + + (SDF_TRaster, SDF_Edge, SDF_Contour, SDF_Shape, SDF_Signed_Distance, + SDF_Params): New structs for setting up SDF data. + (SDF_Edge_Type, SDF_Contour_Orientation): New enums for SDF data. + + (zero_vector, null_edge, null_contour, null_shape, max_sdf): Useful + constants. + + (sdf_edge_new, sdf_edge_done, sdf_contour_new, sdf_contour_done, + sdf_shape_new, sdf_shape_done): New constructors and destructors. + +2020-08-17 Anuj Verma + + [sdf] Add raster parameters structure. + + * src/sdf/ftsdf.h (SDF_Raster_Params): New structure. + + * src/sdf/sdf.c: Include source files in order to make a single + object of the module. + +2020-08-17 Anuj Verma + + [sdf] Add 'sdf' renderer. + + * src/sdf/ftsdf.c: Add 'sdf' renderer along with its interface + functions. + Also add functions to set and get properties. + +2020-08-17 Anuj Verma + + [sdf] Add common elements for 'sdf' and 'bsdf' renderers. + + * src/sdf/ftsdfrend.h (SDF_Rendere_Module, ft_sdf_renderer_class, + ft_bitmap_sdf_renderer_class): New structures. + + * src/sdf/ftsdfcommon.h (DEFAULT_SPREAD, MIN_SPREAD_MAX_SPREAD, + USE_SQUARED_DISTANCES): New macros. + (FT_INT_26D6, FT_INT_16D16, FT_26D6_16D16): New macros. + (FT_CALL, VECTOR_LENGTH_16D16): New macros. + (FT_26D6_Vec, FT_16D16_Vec, FT_16D16, FT_26D6, FT_6D10, FT_CBox): + New typedefs. + (square_root): New macro. + + * src/sdf/ftsdferrs.h: Add module error setup. + +2020-08-16 Anuj Verma + + [sdf] Add files for new 'sdf' module. + + Here is a breakdown of what the files will contain. + + * src/sdf/ftsdfrend.c, src/sdf/ftsdfrend.h: The 'sdf' and 'bsdf' + renderers. + + * src/sdf/ftsdf.c, src/sdf/ftsdf.h: The rasterizer for the 'sdf' + renderer. + * src/sdf/ftbsdf.c, src/sdf/ftbsdf.h: The rasterizer for the 'bsdf' + renderer. + + * src/sdf/ftsdfcommon.h: Commmon properties and functions for both + rasterizers. + * src/sdf/ftsdferrs.h: Common error defines. + + * src/sdf/sdf.c: For building a single object of the entire module. + +2020-08-16 Anuj Verma + + [base] Allow renderers of different formats. + + * src/base/ftobjs.c (FT_Render_Glyph_Internal): Do not return if the + glyph's slot format is `FT_GLYPH_FORMAT_BITMAP`. The forthcoming + 'bsdf' renderer will require bitmaps for processing. + + * src/base/ftobjs.c (ft_add_renderer, ft_remove_renderer): Remove + renderer's glyph format check before adding and removing them. The + 'bsdf' renderer will have a format `FT_GLYPH_FORMAT_BITMAP`. + +2020-08-16 Anuj Verma + + Add data types required for the forthcoming 'sdf' module. + + * include/freetype/freetype.h (FT_Render_Mode): Add new render mode + `FT_RENDER_MODE_SDF`, which will be used to generate SDF. + + * include/freetype/ftimage.h (FT_Pixel_Mode): Add new pixel mode + `FT_PIXEL_MODE_GRAY16`, which will be the output of the 'sdf' + module. + (FT_RASTER_FLAG_SDF): New raster flag to be used internally by the + 'sdf' module. + + * include/freetype/fttypes.h (FT_F6Dot10): New data type. + +2020-08-16 Anuj Verma + + [base] Allow renderers of different formats. + + * src/base/ftobjs.c (FT_Render_Glyph_Internal): Do not return if the + glyph's slot format is `FT_GLYPH_FORMAT_BITMAP`. The forthcoming + 'bsdf' renderer will require bitmaps for processing. + + * src/base/ftobjs.c (ft_add_renderer, ft_remove_renderer): Remove + renderer's glyph format check before adding and removing them. The + 'bsdf' renderer will have a format `FT_GLYPH_FORMAT_BITMAP`. + +2020-12-23 Werner Lemberg + + * builds/windows/detect.mk (COPY): Make it work with `shell`. + + Without this patch, we get the error + + builds/toplevel.mk:127: *** missing separator. Stop. + + Reported by Anuj, with a solution from Alexei. + +2020-12-23 Ignacio Casal Quinteiro + + * meson.build (ft2_defines): Fix builds on Windows. + +2020-12-18 Tatsuyuki Ishi + + [autofit] Fix double division in stem darkening. + + The old code used to divide the darkening amount by em_ratio twice, + leading to unnecessarily bold stems on certain fonts with higher + units per em (e.g. Inter). This patch fixes it. + + The return value of af_loader_compute_darkening was also changed to + use 16.16 fixed point to get rid of a redundant truncation operation. + This should slightly improve the precision, although it's still + bottlenecked by the emboldening function, which uses 26.6 fixed point. + + * src/autofit/afloader.[ch] + (af_loader_compute_darkening): Return FT_Fixed. + (af_loader_embolden_glyph_in_slot): Revise calculations. + +2020-12-17 Alexei Podtelezhnikov + + * include/freetype/ftmodapi.h (FT_FACE_DRIVER_NAME): New public macro. + + The driver name is needed for `FT_Property_Set' and `FT_Property_Get'. + +2020-12-16 Chris Liddell + + [truetype] Fix incremental metrics (#59503). + + * src/truetype/ttgload.c (tt_get_metrics, load_truetype_glyph): + Previously, the code would populate the phantom points before + calling the `get_glyph_metrics` callback. For formats like PCL XL + format 1, class 2 downloaded fonts (where metrics are removed from + the TTF header), this causes problems when the hinting program uses + the phantom points (misplaced and distorted glyphs) due to the + metrics being unset (all zeros). + (tt_get_metrics_incr_overrides): Renamed to... + (tt_get_metrics_incremental): ... this. Updated caller + + * include/freetype/ftincrem.h: Update the documentation to make it + clearer that `get_glyph_metrics` is to retrieve metrics from a + non-standard source, but *not* for the purpose of imposing custom + metrics. + +2020-12-14 Werner Lemberg + + [type42] Pacify static analysis tools (#59682). + + * src/type42/t42objs.c (T42_Size_Init, T42_GlyphSlot_Init): Avoid + warnings about uninitialized variables. + +2020-12-07 Werner Lemberg + + * builds/unix/configure.raw: Don't set `FT_DEBUG_LOGGING`. + + All debug options are handled exclusively in `ftoption.h`. + +2020-12-07 Werner Lemberg + + * src/*: More fixes for using a '\n' in `FT_TRACE` and `FT_ERROR`. + +2020-12-07 Werner Lemberg + + */*: s/FT_LOGGING/FT_DEBUG_LOGGING/. + +2020-12-05 Werner Lemberg + + * builds/toplevel.mk (do-dist): Remove `submodules` directory. + +2020-12-02 Werner Lemberg + + * src/*: Don't use more than one '\n' in `FT_TRACE` and `FT_ERROR`. + + This ensures good logging output, with all lines having a proper + prefix (if requested). + +2020-12-02 Werner Lemberg + + [base] Don't close 'stderr' after logging. + + * src/base/ftdebug.c, builds/windows/ftdebug.c (ft_logging_deinit): + Fix it. + +2020-12-02 Werner Lemberg + + * submodules/dlg: Updated to commit 9f0c8b22. + +2020-12-02 Werner Lemberg + + * src/bdf/bdflib.c: Fix `-Wformat` warning. + +2020-12-02 Werner Lemberg + + Improve setup for 'dlg' library. + + * autogen.sh (copy_submodule_file), builds/toplevel.mk: Redirect + stderr to `/dev/null`. + + * builds/toplevel.mk: Move code block to handle 'dlg' stuff into + `check_platform` conditional. + Also fix wildcard expressions for guarding `git submodule` commands. + Also make file copying work with non-Unix platforms (untested). + +2020-12-01 Werner Lemberg + + [build] Use gcc (and clang) in C99 mode. + + Other compilers are unchanged. + + * builds/compiler/gcc-dev.mk, builds/compiler/gcc.mk (ANSIFLAGS): + s/-ansi/-std=c99/. + + * builds/freetype.mk (FT_CFLAGS): Remove `-std=c99`. + + * builds/unix/configure.raw: Handle C99. + Remove no longer needed test for gcc 4.6 and earlier. + +2020-12-01 Werner Lemberg + + [dlg] Fix compiler warnings. + + * src/dlg/dlgwrap.c: Duplicate some feature test macros from + `dlg.c`, which must come first before loading standard headers. For + example, `freetype.h` loads `stdio.h` if compiled in debug mode. + +2020-12-01 Werner Lemberg + + * src/type42/t42parse.c: Fix `-Wformat` warnings. + +2020-12-01 Priyesh Kumar + + [builds/unix] Check for 'pthread' library. + + * builds/unix/ax_pthread.m4: New file, taken from 'autoconf-archive' + git repository. + + * builds/unix/configure.raw: Check for 'pthread'; also check whether + it works. + +2020-12-01 Werner Lemberg + + [base] Implement vertical alignment of log printing. + + Based on a patch by Priyesh. + + * include/freetype/internal/fttrace.h (FT_MAX_TRACE_LEVEL_LENGTH): + New macro. + + * src/base/ftdebug.c, builds/windows/ftdebug.c (ft_log_handler): + Print logs after a fixed width to handle different lengths of + `FT_COMPONENT` entries. + Use `ft_strrchr` to check for final newline character. + +2020-11-30 Priyesh Kumar + + Update logging related documentation. + + * docs/DEBUG: Updates related to `FT_LOGGING`. + + * README.git: Updates related to logging. + +2020-11-30 Priyesh Kumar + + * src/*: Fix `-Wformat` warnings. + +2020-11-30 Priyesh Kumar + + [builds/windows] Changes to build 'dlg' with FreeType on Windows. + + We only support Visual C++ 2010 and newer. + + * builds/windows/vc2010/script.bat: New windows batch file to copy + necessary 'dlg' files from `submodules/dlg` to `src/dlg`. This file + is used as a pre-built event in Visual C++. + + * builds/windows/ftdebug.c: Synchronize with `src/base/ftdebug.c`. + + * builds/windows/vc2010/freetype.vcxproj.filters: Add + `src/dlgwrap.c`. + + * builds/windows/vc2010/freetype.vcxproj + (AdditionalIncludeDirectories): Add include files of dlg for 'Debug' + and 'Debug Static' configurations on both 'x64' and 'win32' + platforms. + (PreprocessorDefinitions): Add `FT_LOGGING` for 'Debug' and 'Debug + Static' configurations on both 'x64' and 'win32' platforms. + Add `DLG_STATIC' for 'Debug' configuration on 'x64' and 'win32' + platforms. + (DisableLanguageExtensions): We need to disable the `/Za` option + when building 'dlg' with FreeType as 'dlg' strictly follows the C99 + standard. Visual C++ produces behaves unexpectedly when + compiling a C99 file with `/Za` option enabled. + +2020-11-30 Priyesh Kumar + + [base] Add public API to change log handling function. + + * include/freetype/ftlogging.h (FT_Custom_Log_Handler): New function + typedef to store the custom callback logging function. + (FT_Set_Log_Handler, FT_Set_Default_Log_Handler): New functions to + set and reset custom log handler. + + * include/freetype/internal/ftdebug.h (custom_output_handler): New + variable to support a custom callback logging function. + (FT_Logging_Callback): A new function typedef to print log using + custom callback logging function, which is set using + `FT_Set_Log_Handler`. + (FT_Log): Use it. + + * src/base/ftdebug.c (FT_Set_Log_Handler, + FT_Set_Default_Log_Handler, FT_Logging_Callback): Add function + definitions. + +2020-11-28 Priyesh Kumar + + [base] Add public API to change the levels of tracing components. + + * include/freetype/ftlogging.h: New header file. + + * include/freetype/internal/ftdebug.h [FT_LOGGING]: Include + `ftlogging.h`. + + * src/base/ftdebug.c (ft_custom_trace_level): New variable. + (ft_debug_init): Update to support change of levels of tracing + components of FreeType at run-time. + (FT_Trace_Set_Level): New function to change the levels of tracing + components at run-time. + (FT_Trace_Set_Default_Level): New function to reset the levels of + tracing components back to default. + +2020-11-28 Priyesh Kumar + + [base] Updates to print timestamp and name of `FT_COMPONENT` in logs. + + * include/freetype/internal/ftdebug.h (FT_LOGGING_TAG, + FT_LOGGING_TAG_): New macros to resolve the value of `FT_COMPONENT' + into a string. + (ft_add_tag, ft_remove_tag): New functions to add and remove dlg tags. + + * src/base/ftdebug.c: Add new variables to control the logging of + timestamp and name of `FT_COMPONENT` along with actual logs. + (ft_add_tag, ft_remove_tag): Add function definitions. + (ft_log_handler): Updates to print timestamp and name of + `FT_COMPONENT`. + (ft_debug_init) [FT_LOGGING]: Users can now control the logging of + timestamp and name of `FT_COMPONENT` by adding tags in the + `FT2_DEBUG` environment variable. + +2020-11-27 Priyesh Kumar + + [base] Add functions and variables to print logs to a file. + + * include/freetype/internal/ftdebug.h: Added dlg's header files. + (FT_LOG): New macro to redirect trace logs to dlg's API's whenever + `FT_LOGGING' is defined. + (ft_logging_init, ft_logging_deinit): New functions to handle + initialization and uninitialization of logging related variables. + (ft_log_handler): New function to handle logs of FreeType. + + * src/base/ftdebug.c: Add necessary logging related variables. + (ft_logging_init, ft_logging_deinit, ft_log_handler): Add function + definitions. + + * src/base/ftinit.c (FT_Init_FreeType) [FT_LOGGING]: Call + `ft_logging_init`. + (FT_Done_FreeType) [FT_LOGGING]: Call `ft_logging_deinit`. + + * src/base/ftobjs.c (FT_New_Library): Call `ft_debug_init` only if + `FT_LOGGING` is not defined. + +2020-11-27 Priyesh Kumar + + [builds] Necessary changes to make 'dlg' compile. + + * autogen.sh (copy_submodule_files): New script to copy all the + necessary source and include files from `submodules/dlg` to + `src/dlg`. + + * src/dlg/dlgwrap.c: New wrapper file for `src/dlg.c`. It enables + the build of 'dlg' if the `FT_LOGGING` macro is defined. + + * src/dlg/rules.mk: New sub-Makefile. + + * builds/freetype.mk (DLG_DIR): New variable to include the + header files of the 'dlg' library. + (INCLUDES): Add `DLG_DIR`. + (FT_CFLAGS): Add `-std=c99' flag. + Include `src/dlg/rules.mk` file to build 'dlg' library. + (OBJ_S, OBJ_M): Add `DLG_OBJS_M` and `DLG_OBJS_S`. + + * builds/toplevel.mk: For builds directly from the git repository + we need to copy files from `submodule/dlg` to `src/dlg`. + + * include/freetype/config/ftoption.h, devel/ftoption.h (FT_LOGGING): + New macro to enable or disable the logging facility in FreeType. + +2020-11-27 Priyesh Kumar + + * .gitmodules: Add 'dlg' library's git repository as submodule. + +2020-12-01 Werner Lemberg + + * src/tools/chktrcmp.py (trace_use_pat): Update to current use. + +2020-11-20 Alexei Podtelezhnikov + + [cff,cid,type1] Demote old engine for lack of CFF2. + + * src/cff/cffobjs.c (cff_driver_init): Always default to Adobe engine. + * src/cid/cidobjs.c (cid_driver_init): Ditto. + * src/type1/t1objs.c (T1_Driver_Init): Ditto. + +2020-11-09 Werner Lemberg + + * src/type42/t42parse.c (t42_parse_sfnts): More tracing messages. + +2020-11-04 Werner Lemberg + + * meson.build: Fix .pc file generation. + + For backwards compatibility we need the libtool version, not the .so + number. + + Reported by Nikolaus. + +2020-10-28 Werner Lemberg + + [truetype] Minor update to forthcoming OpenType 1.8.4 standard. + + * src/truetype/ttgxvar.c (ft_var_load_item_variation_store): Limit + size of `regionCount`. + +2020-10-26 Werner Lemberg + + * meson.build: Fix 'harfbuzz' and 'brotli' build options (#59347). + + Without this patch, 'harfbuzz' and 'brotli' are always required. + + Patch submitted anonymously in Savannah bug report. + +2020-10-23 Ben Wagner + + * src/sfnt/pngshim.c (Load_SBit_Png): Fix memory leak (#59322). + + The issue is that `rows` is allocated but will not be freed in the + event that the call to `png_read_image` fails and calls `longjmp`. + +2020-10-20 Werner Lemberg + + * Version 2.10.4 released. + ========================== + + + Tag sources with `VER-2-10-4'. + + * docs/VERSION.TXT: Add entry for version 2.10.4. + * docs/CHANGES: Updated. + + * README, src/base/ftver.rc, builds/windows/vc2010/index.html, + builds/windows/visualc/index.html, + builds/windows/visualce/index.html, + builds/wince/vc2005-ce/index.html, + builds/wince/vc2008-ce/index.html, docs/freetype-config.1: + s/2.10.3/2.10.4/, s/2103/2104/. + + * include/freetype/freetype.h (FREETYPE_PATCH): Set to 4. + + * builds/unix/configure.raw (version_info): Set to 23:4:17. + * CMakeLists.txt (VERSION_PATCH): Set to 4. + +2020-10-19 Werner Lemberg + + [sfnt] Fix heap buffer overflow (#59308). + + This is CVE-2020-15999. + + * src/sfnt/pngshim.c (Load_SBit_Png): Test bitmap size earlier. + +2020-10-17 Alexei Podtelezhnikov + + * src/sfnt/tt{colr,cpal}.c: Fix signedness warnings from VC++. + +2020-10-17 Alexei Podtelezhnikov + + * src/sfnt/sfwoff2.c (Read255UShort): Tweak types to please VC++. + +2020-10-10 Werner Lemberg + + * Version 2.10.3 released. + ========================== + + + Tag sources with `VER-2-10-3'. + + * docs/VERSION.TXT: Add entry for version 2.10.3. + + * README, src/base/ftver.rc, builds/windows/vc2010/index.html, + builds/windows/visualc/index.html, + builds/windows/visualce/index.html, + builds/wince/vc2005-ce/index.html, + builds/wince/vc2008-ce/index.html, docs/freetype-config.1: + s/2.10.2/2.10.3/, s/2102/2103/. + + * include/freetype/freetype.h (FREETYPE_PATCH): Set to 3. + + * builds/unix/configure.raw (version_info): Set to 23:3:17. + * CMakeLists.txt (VERSION_PATCH): Set to 3. + +2020-09-25 Werner Lemberg + + [autofit] Synchronize with ttfautohint. + + This corresponds to the following commits in the ttfautohint git + repository: + + bb6842bd3bd437b7b4a7921b0376c860f5e73d18 Typo, formatting. + d5c91ddb1cb310257a3dfe9a8e20e1fc51335faa Add Medefaidrin script. + + * src/autofit/afblue.dat: Add blue zone data for Medefaidrin. + * src/autofit/afblue.c, src/autofit/afblue.h: Regenerated. + + * src/autofit/afscript.h: Add Medefaidrin standard characters. + + * src/autofit/afranges.c, src/autofit/afstyles.h: Add Medefaidrin + data. + +2020-09-25 Werner Lemberg + + Move `scripts/make_distribution_archives.py` to `src/tools`. + + * scr/tools/scripts/make_distribution_archives.py: (_TOP_DIR, + _SCRIPT_DIR): Updated to new location. + (main): s/shutils.copyfile/shutils.copy/ to preserve file + permissions. + (main): Prefix source file paths with `git_dir` while copying files + to allow calls of the script from other places than the top-level + directory. + +2020-09-24 Werner Lemberg + + * src/cff/cffgload.c (cff_slot_load): Scale `vertBearingY`. + + Towards the end of the the function there is a call to + `FT_Outline_Get_CBox` that retrieves the glyph bbox in scaled units. + That sets `horiBearing{X,Y}` and `vertBearingX` but `vertBearingY` + is left alone, and is not scaled. + + Patch from Eric Muller . + +2020-09-24 Werner Lemberg + + * src/base/ftobjs.c (FT_Load_Glyph): Trace glyph metrics. + +2020-09-22 Werner Lemberg + + [meson] Move auxiliary scripts to `builds/meson`. + + Suggested by Alexei. + + * scripts/*.py: Move meson scripts to... + * builds/meson/*.py: ... this new location. + + * meson.build: Updated. + +2020-09-21 David Turner + + Add python script for building tarballs. + + * scripts/make_distribution_archives.py: New file. + + This standalone Python script should be equivalent to running `make + dist` with the Make-based build system, with the following minor + differences: + + - Since `make distclean` doesn't always clean up `objs/` properly, + `make dist` archives may contain some stale binaries like + `objs/.libs/libfreetype.so.6` or others. + + - `config.guess` and `config.sub` are not updated unless option + `--gnu-config-dir=DIR` is used to specify the location of these + files. + + - Some bits of the auto-generated reference documentation may + appear in slightly different order, probably due to issues related + to mkdocs and docwriter. + + As an example, the call + + scripts/make_distribution_archives.py /tmp/freetype2-dist + + creates the following files under `/tmp/freetype2-dist`: + + freetype-.tar.gz + freetype-.tar.xz + ft.zip + +2020-09-21 Werner Lemberg + + * scripts/extract_freetype_version.py: Fix regex typos. + +2020-09-21 David Turner + + Add Meson build project file. + + Example usage: + + # Configure Meson build in directory `build-meson` to generate + # release binaries comparable to to the ones from the + # autotools/make build system. + meson setup build-meson \ + --prefix=/usr/local \ + --buildtype=debugoptimized \ + --strip \ + -Db_ndebug=true + + # After configuring the Meson build with the above command, + # compile and install to `/usr/local/`; this includes a pkg-config + # file. + ninja -C build-meson install + + # Alternatively, compile and install to `/tmp/aa/usr/local/...` + # for packaging. + DESTDIR=/tmp/aa ninja -C build-meson install + + # Generate documentation under `build-meson/docs`. + ninja -C build-meson docs + + Library size comparison for stripped `libfreetype.so` generated by + all three build systems: + + - Default build (autotools + libtool): 712 KiB + - CMake build (RelWithDebInfo): 712 KiB + - Meson build: 712 KiB + + + * meson.build: New top-level Meson build file for the library. + + * meson_options.txt: New file. It holds user-selectable options for + the build, which can be printed with `meson configure`, and selected + at `meson setup` or `meson --reconfigure` time with + `-D