kc3-lang/freetype/src
Branch :
Log
| Author | Commit | Date | CI | Message |
|---|---|---|---|---|
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18fc64e6 | 2021-08-07 17:11:57 | [smooth] Avoid integer overflow. Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36243 * src/smooth/ftgrays.c(ADD_LONG, SUB_LONG, MUL_LONG, NEG_LONG) [STANDALONE_]: Removed, unused. (ADD_INT) [STANDALONE_]: New macro. (FT_INTEGRATE): Use ADD_INT. | |
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47cf8ebf | 2021-07-28 17:36:57 | [sfnt] Add API for retrieving a 'COLR' v1 'ClipBox' table. The optional 'COLR' v1 glyph-specific clip box helps upstream graphics libraries allocate a sufficiently large bitmap for a glyph without having to traverse the glyph graph for that. See https://github.com/googlefonts/colr-gradients-spec/issues/251 for background on the introduction of this specification change. * include/freetype/ftcolor.h (FT_ClipBox): New structure. (FT_Get_Color_Glyph_ClipBox): New function declaration. * include/freetype/internal/sfnt.h (TT_Get_Color_Glyph_ClipBox_Func): New function type. (SFNT_Interface, FT_DEFINE_SFNT_INTERFACE): Use it. * src/base/ftobjs.c (FT_Get_Color_Glyph_ClipBox): New function to link API with SFNT implementation. * src/sfnt/sfdriver.c (sfnt_interface): Updated. * src/sfnt/ttcolr.c (Colr): New field `clip_list`. (tt_face_load_colr): Parse global clip list offset. (tt_face_get_color_glyph_clipbox): New function to find the clip box for a glyph id from the clip list array. * src/sfnt/ttcolr.h: Updated. | |
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6be8bfe4 | 2021-08-06 08:31:22 | [smooth] Fix left shifts of negative numbers. Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36241 * src/smooth/ftgrays.c (LEFT_SHIFT): New macro. (gray_render_conic) [BEZIER_USE_DDA]: Use it. | |
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be6ab319 | 2021-08-02 09:44:16 | [sdf] Fix out-of-range-access. * src/sdf/ftbsdf.c (first_pass, second_pass): Fix range during forward pass. Otherwise the index goes out of range for the last column. Fixes issue #1077. | |
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ebcc96e5 | 2021-08-02 08:40:43 | Fix invalid memory access in `bsdf` rasterizer. Do not generate SDF from bitmap if the `FT_GLYPH_OWN_BITMAP` flag is not set. In some cases the bitmap buffer is freed but still points to a valid address; to handle those cases check the flag before accessing the memory. * src/sdf/ftsdfrend.c (ft_bsdf_render): Handle the above case. Also, return an error message if the bitmap's rows/pitch is invalid, otherwise `slot->buffer` might be assigned to some invalid memory location. (ft_sdf_render): Same as above. Plus, move the outline back to original state after rasterization and not if any error occurs. Signed-off-by: Anuj Verma <anujv@iitbhilai.ac.in> | |
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d2367aba | 2021-07-29 08:16:25 | src/sfnt/ttcolr.c: Minor formatting. | |
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30a82e1e | 2021-07-26 18:28:56 | [sfnt] 'COLR' v1 PaintSweepGradient spec update * src/sfnt/ttcolr.c (read_paint): PaintSweepGradient follows other spec changes and now has the angles specified as F2DOT14, reflect that in the implementation. * include/freetype/ftcolor.h (FT_PaintSweepGradient): Update documentation. | |
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5c0ac7a4 | 2021-07-26 17:32:09 | [sfnt] Retrieve affine matrix from offset in 'COLR' v1 parsing. * src/sfnt/ttcolr.c (read_paint): Implement spec change where affine transform matrix is now referenced by offset instead of being placed inline in the PaintTransform table. | |
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66189807 | 2021-07-26 17:32:22 | [sfnt] 'COLR' v1 PaintSkew related spec updates * src/sfnt/ttcolr.c (read_paint): Implement spec changes around PaintSkew, PaintSkewAroundCenter. Update parsing to read shorter values as changed in the spec. * include/freetype/ftcolor.h (FT_PaintSkew): Update documentation. | |
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48df0fa6 | 2021-07-23 19:02:51 | [sfnt] PaintRotate/PaintRotateAroundCenter spec updates * src/sfnt/ttcolr.c (read_paint): Implement spec change where PaintRotate and PaintRotateAroundCenter were split for a more compact format definition. Update parsing to read shorter values as changed in the spec. * include/freetype/ftcolor.h (FT_PaintRotate): Update documentation. | |
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d7bdcb1b | 2021-07-23 19:37:47 | [sfnt] 'COLR' v1 PaintTranslate and PaintScale precision * src/sfnt/ttcolr.c (read_paint): Implement spec changes in PaintTranslate and PaintScale and friends. Update parsing to read new shorter values. | |
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c2fa51d9 | 2021-07-24 20:32:16 | Fix some `cppcheck` warnings. * src/bzip2/ftbzip2.c (ft_bzip2_file_skip_output), src/gzip/ftgzip.c (ft_gzip_file_skip_output): Reduce scope of `delta`. * src/psaux/psintrp.c, src/psaux/psintrp.h (cf2_interpT2CharString): Add `const` to `buf` parameter. * src/raster/ftraster.c (DelOld): Add `const` to `profile` parameter. (Vertical_Sweep_Span): Reduce scope of `target`. (FT_Outline_Get_CBox): Reduce scope of `xMin`, `xMax`, `yMin`, `yMax`. * src/smooth/ftgrays.c (gray_render_conic): Reduce scope of `split`. (gray_sweep, gray_sweep_direct): Reduce scope of `area`. * src/tools/apinames.c (names_dump) <OUTPUT_WATCOM_LBC>: Reduce scope of `temp`. | |
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5bcaf51b | 2021-07-23 11:59:58 | [autofit] Split `afwrtsys.h`. The header file `afwrtsys.h` has two distinct functions: to include the required writing system headers and also to generate code for each writing system. At each current use site only one or the other is used, with various macro trickery selecting one or the other. Split this header into `afws-decl.h` for the required writing system declarations and `afws-iter.h` for iterating over the writing systems to generate code. The motivation for this change is that the Visual C++ compiler treats the standard include guard idiom like `#pragma once` 'if no non-comment code or preprocessor directive comes before or after the standard form of the idiom'. It appears to check this after macro expansion, so if `WRITING_SYSTEM` expands to empty the bottom of `afwrtsys.h` is empty and looks like the standard include guard idiom which is treated like `#pragma once`, so subsequent inclusion of `afwrtsys.h` is elided. Fixes #1075. * src/autofit/afglobal.c (af_writing_system_classes), src/autofit/aftypes.h (AF_WritingSystem), src/autofit/rules.mk (AUTOF_DRV_H): Updated. * src/autofit/afwrtsys.h: Split into... * src/autofit/afws-decl.h, src/autofit/afws-iter.h: New files. | |
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801cd842 | 2021-07-18 07:53:57 | * 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. | |
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357b353c | 2021-07-16 11:12:13 | * 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. | |
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552fc97f | 2021-07-16 07:49:20 | [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. | |
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93771d61 | 2021-07-16 07:40:56 | Formatting and ChangeLog additions for previous commits. | |
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c37c0873 | 2021-07-15 11:33:16 | 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. | |
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56cc2ad4 | 2021-06-19 10:26:53 | [smooth] Implement Bezier quadratic arc flattenning with DDA Benchmarking shows that this provides a very slighty performance boost when rendering fonts with lots of quadratic bezier 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 | |
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86b9c934 | 2021-06-19 11:18:40 | [smooth] Minor speedup to smooth rasterizer This speeds up the smooth rasterizer by avoiding a conditional branches in the hot path. Namely: - 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 /usr/share/fonts/truetype/droid/DroidSansFallbackFull.ttf Before: 5.472 us/op After: 5.275 us/op out/ftbench -p -s60 -t5 -bc /usr/share/fonts/truetype/droid/DroidSansFallbackFull.ttf Before: 17.988 us/op After: 17.389 us/op | |
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5d27b10f | 2021-07-13 10:59:32 | [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.) | |
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a4c8f21a | 2021-07-13 10:44:38 | [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. | |
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e592982a | 2021-07-13 10:00:22 | [sdf] Improve documentation. | |
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825b7ea2 | 2021-07-12 22:11:24 | [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. | |
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a212668c | 2021-06-02 19:07:56 | Remove obsolete AF_Angle type and related sources. Move the af_sort_xxx() functions from afangles.c to afhints.c in order to get rid of the obsolete angle-related types, macros and function definitions. | |
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2f11522a | 2021-06-02 19:05:09 | Remove experimental auto-hinting 'warp' mode. This feature was always experimental, and probably nevery worked properly. This patch completely removes it from the source code, except for a documentation block describing it for historical purpose. | |
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15e88980 | 2021-06-02 18:54:41 | 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). | |
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89c60eca | 2021-07-05 05:39:59 | * src/base/ftlcdfil.c (FT_Library_SetLcdGeometry): Fix argument. Reported by Hin-Tak. | |
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d3dc2da9 | 2021-06-30 18:22:29 | * 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. | |
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286da6c5 | 2021-06-22 15:01:19 | [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. | |
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0348c627 | 2021-06-29 20:51:32 | [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. | |
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f27b4834 | 2021-06-30 10:54:59 | * src/raster/ftraster.c (Render_Single_Pass): Simplify `band_stack'. | |
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90ecac41 | 2021-06-30 10:23:42 | Update `CHANGES` file; other minor doc fixes. | |
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69c3516c | 2021-06-29 23:51:23 | [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. | |
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3696ac5a | 2021-06-29 23:27:10 | [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. | |
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c852388d | 2021-06-28 23:26:10 | [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. | |
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7d4e55c3 | 2021-06-28 16:29:49 | [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. | |
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3a278381 | 2021-06-28 10:22:03 | [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. | |
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fb4511eb | 2021-06-26 08:49:20 | [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. | |
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f6370e2f | 2021-06-25 22:59:39 | [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. | |
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bc1029b9 | 2021-06-25 18:20:57 | * src/raster/ftraster.c (Render_Single_Pass): Remove dead code. | |
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1e0cef9e | 2021-06-24 00:19:50 | [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. | |
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d8ac180c | 2021-06-23 23:32:02 | [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. | |
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4cb21b9a | 2021-06-22 20:50:48 | [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. | |
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008e42a1 | 2021-06-19 15:45:46 | ftver.rc: Update copyright year. | |
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b460a506 | 2021-06-19 07:03:40 | [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`. | |
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232243e7 | 2021-06-19 06:32:29 | 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. | |
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61bac759 | 2021-06-18 17:38:00 | * src/sdf/ftsdfrend.c (ft_(b)sdf_render): Do not FT_ERROR routinely. | |
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f8c5c546 | 2021-06-16 09:54:49 | Fix for issue 1063 See https://gitlab.freedesktop.org/freetype/freetype/-/issues/1063 for more details on the bug. | |
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c6fcd612 | 2021-06-15 22:49:21 | Add a comment. | |
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8336d53c | 2021-06-12 22:33:08 | [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. | |
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db0f2c44 | 2021-06-12 10:05:07 | [psaux] Fix another assertion. * src/psaux/psintrp.c (cf2_interpT2CharString) <cf2_escCALLOTHERSUBR>: 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. | |
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a34afe67 | 2021-06-12 08:40:16 | [psaux] Fix assertions. * src/psaux/pshints.c (cf2_hintmap_adjustHints): Check for overflow before emitting an assertion error. | |
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9bfecfd2 | 2021-06-09 23:34:04 | * src/truetype/ttinterp.c (TT_RunIns): Optimize tracing. | |
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7833e308 | 2021-06-09 10:40:30 | [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. | |
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08f66322 | 2021-06-08 18:23:16 | More various documentation improvements and fixes. | |
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b24cfc8d | 2021-06-08 15:26:41 | [sfnt] Sanitize cmap4 table better. Fixes #1062. * src/sfnt/ttcmap.c (tt_cmap4_validate): Handle a too-small value of `length` gracefully. | |
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ee6d03d3 | 2021-06-08 14:29:11 | [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. | |
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41fa19fc | 2021-06-08 10:32:20 | * src/sdf/ftsdfcommon.c: Fix inclusion of header files. | |
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35b21c71 | 2021-06-08 09:06:39 | [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. | |
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36ee7171 | 2021-06-08 09:00:39 | [sdf] Formatting and improved comments. | |
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2b1d5562 | 2021-06-08 08:29:34 | [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. | |
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2a6665a4 | 2021-06-01 15:25:31 | [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. | |
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7ca7da9d | 2021-06-02 06:59:01 | * src/autofit/aflatin.c (af_latin_metrics_scale_dim): Fix tracing. Problem reported by Alexei. | |
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0abbc9f5 | 2021-06-02 06:36:11 | [psaux] Fix MSVC compiler warnings. * src/psaux/afmparse.c (afm_parse_track_kern, afm_parse_kern_pairs): Add cast. | |
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6e253b26 | 2021-05-29 11:05:41 | Typos in previous commit. | |
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a50c39aa | 2021-05-29 09:50:29 | 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. | |
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28eee363 | 2021-05-27 11:38:56 | [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. | |
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0d1c306e | 2021-05-25 11:27:56 | [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. | |
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2468e59a | 2021-05-20 22:20:36 | [type42] Avoid some memory zeroing. * src/type42/t42objs.c (T42_Open_Face): Tweak allocation macro. * src/type42/t42parse.c (t42_parse_sfnts): Ditto. | |
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06e21ffe | 2021-05-18 14:49:50 | [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`. | |
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1bc801b0 | 2021-05-16 23:12:01 | [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". | |
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de151657 | 2021-05-13 23:08:31 | [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'. | |
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2d3f5dd2 | 2021-05-12 17:24:35 | * 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. | |
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c653b8d2 | 2021-05-12 16:17:21 | * src/smooth/ftgrays.c (FT_GRAY_SET): Adjust for better code. | |
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8f43d324 | 2021-05-12 00:04:59 | [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. | |
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b0702645 | 2021-05-10 22:06:01 | * src/smooth/ftgrays.c (gray_hline): Simplify even-odd computations. It is too bad the even-odd rule is not used much. | |
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967a34ee | 2021-05-07 19:17:48 | [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. | |
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2f62d8e0 | 2021-05-07 09:33:41 | * src/bdf/bdflib.c (_bdf_list_ensure): Tweak allocation macro. | |
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79ed536d | 2021-05-06 23:46:46 | * src/psaux/psobjs.c (ps_parser_load_field): Tweak allocation macro. | |
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44c59414 | 2021-05-06 22:54:03 | * src/sfnt/sfobjs.c (sfnt_load_face): Tweak allocation macro. | |
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998c7c0f | 2021-05-06 22:51:37 | * src/cid/cidload.c (cid_read_subrs): Tweak allocation macro. | |
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2d957848 | 2021-05-06 22:49:13 | * src/base/ftrfork.c (FT_Raccess_Get_DataOffsets): Tweak allocation. | |
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8150ed0d | 2021-05-05 23:30:46 | [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. | |
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82fd32d6 | 2021-05-03 13:49:14 | * 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 | |
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66630d88 | 2021-05-03 22:40:16 | [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. | |
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ec95f9c9 | 2021-05-02 18:30:22 | [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. | |
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d911cb53 | 2021-05-01 23:49:11 | * src/cid/cidload.c (cid_read_subrs): Tweak allocaton macro. | |
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dc42f826 | 2021-05-01 12:46:44 | [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. | |
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b8968d66 | 2021-05-01 12:24:44 | * src/sfnt/ttpost.c (load_format_{20,25}): Tweak allocaton macros. | |
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2583b608 | 2021-05-01 09:22:26 | * src/sfnt/pngshim.c (Load_SBit_Png): Tweak allocaton macro. | |
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56ae9430 | 2021-05-01 09:14:04 | [truetype] Avoid some memory zeroing. * src/truetype/ttinterp.c (Init_Context): Tweak allocation macro. * src/truetype/ttpload.c (tt_face_load_cvt): Ditto. | |
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c177cc35 | 2021-05-01 09:09:52 | [woff2] Avoid some memory zeroing. * src/sfnt/sfwoff2.c (store_loca, woff2_open_font): Tweak macros. | |
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4e1c6a12 | 2021-04-30 09:35:21 | * src/gzip/ftgzip.c (ft_gzip_alloc): Zero out memory again. | |
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f631542d | 2021-04-27 11:39:58 | [lzw] Preserve decompression stack when relocating to heap. * src/lzw/ftzopen.c (ft_lzwstate_stack_grow): Copy stack when relocating to heap. | |
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c213c8a9 | 2021-04-27 08:54:19 | * src/cid/cidgload.c (cid_load_glyph): Restore the glyph_length check. | |
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2ec6feaf | 2021-04-27 13:28:35 | * src/psmodule.c (ps_unicodes_init): Ignore empty glyph names. Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33637 | |
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caff87b1 | 2021-04-26 22:45:40 | * src/sfnt/sfobjs.c (sfnt_init_face): Revert macro change. | |
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8750e843 | 2021-04-26 17:21:51 | [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. | |
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618d0834 | 2021-04-26 17:14:28 | [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. |