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2203 Commits

Author SHA1 Message Date
Fabian Giesen 40eb865b3b stb_image: header scan mode always needs to check for tRNS 
For paletted images, header-scanning mode (used by stbi_info) kept
going after the image header to see if a tRNS (transparency) chunk
shows up to correctly determine the channel count, but we would
immediately return after IHDR for non-paletted images.

This is incorrect. We also change our reported channel count on
RGB images with a tRNS chunk, therefore non-paletted images also
have to resume scanning further chunks.

Update the logic to keep scanning regardless and report the
correct channel count from stbi_info for RGB images with tRNS
(constant alpha channel).

Fixes issue #1419.
 2023-01-23 00:46:33 -08:00
Fabian Giesen 24fa1ff2e9 stb_image: Fix broken indenting introduced earlier 2023-01-22 19:44:49 -08:00
Fabian Giesen 0613e9c043 stb_image: Tweak end-of-JPEG junk scanning loop. 
Be a bit more picky about what we consider a valid marker.
0xff 0x00 (stuffed 0 byte) should not count.

Fixes issue #1409.
 2023-01-22 19:42:55 -08:00
Fabian Giesen 1096389590 stb_image: Accept some extra data between BMP header and payload 
Limit to 1k, which is the maximum size of a 256-entry palette that
would ordinarily go there. It feels sensible to relax this a bit but
we don't want to go overboard.

Fixes issue #1325.
 2023-01-22 18:52:04 -08:00
Fabian Giesen 51d295e33e stb_image: Add trailing semicolon to usage example 
Fixes issue #1330 reported by lunasorcery.
 2023-01-22 16:16:02 -08:00
Fabian Giesen 038b6ab9ec stb_image: Avoid stdint.h on 32-bit Symbian. 
As suggested by "mupfdev" on Github. We don't have a way to test
here but seems simple enough.

Fixes issue #1321.
 2023-01-22 15:51:38 -08:00
Fabian Giesen b15b04321d Merge branch 'NeilBickford-NV-neilbickford/additional-image-fixes' into dev 2023-01-22 15:33:45 -08:00
Fabian Giesen 4d160de463 stb_image: Fix name of stbi_set_unpremultiply_on_load_thread impl 
Bug reported by N-R-K. Fixes #1276.
 2023-01-22 15:29:01 -08:00
Fabian Giesen e5da6acacd Merge branch 'neilbickford/image_hdr_pgm_fixes' into dev 2023-01-22 15:12:38 -08:00
Neil Bickford 9f22cc9008 stb_image PNG: Checks for invalid DEFLATE codes. 
Specifically, this rejects length codes 286 and 287, and distance codes 30 and 31.
This avoids a scenario in which a file could contain a table in which
0 corresponded to length code 287, which would result in writing 0 bits.

Signed-off-by: Neil Bickford <nbickford@nvidia.com>
 2023-01-22 15:07:14 -08:00
Neil Bickford 5cfc2a744a Zero-initialize stbi__jpeg to avoid intermittent errors found by fuzz-testing 2022-11-29 00:36:36 -08:00
Neil Bickford 47164e4086 Add checks for signed integer overflow; further guard against cases where stbi__grow_buffer_unsafe doesn't read all bits required. 2022-11-29 00:36:36 -08:00
Neil Bickford 96fe76c213 Add range checks to fix a few crash issues in stb_image issues 1289 and 1291 2022-11-29 00:36:36 -08:00
Neil Bickford 84b94010a7 Add checks for PNM integer read overflows, add a 1GB limit on IDAT chunk sizes to fix an OOM issue, and check for a situation where a sequence of bad Huffman code reads could result in a left shift by a negative number. 2022-11-29 00:36:36 -08:00
Neil Bickford 2a02ff76b5 Fixes two stb_image issues that could occur with specially constructed HDR and PGM files. 
Signed-off-by: Neil Bickford <nbickford@nvidia.com>
 2022-11-29 00:36:23 -08:00
Sean Barrett 8b5f1f37b5 update readme 2022-09-08 09:40:02 -07:00
Sean Barrett bc00c178ac Merge branch 'master' of https://github.com/nothings/stb 2022-09-08 09:36:55 -07:00
Sean Barrett 4af130e863 stb_perlin.h: restore file now that patent is expired 2022-09-08 09:35:48 -07:00
Sean Barrett af1a5bc352
Update bug_report.md 2021-09-10 00:48:29 -07:00
Sean Barrett 37e21f17b2
Update bug_report.md 2021-09-10 00:47:35 -07:00
Sean Barrett b9e1d86edc
Create config.yml 2021-09-10 00:43:51 -07:00
Sean Barrett b1826c9894 Update issue templates 2021-09-10 00:41:32 -07:00
Sean Barrett c0c982601f stb_truetype 1.26: fix rendering glitches 2021-08-28 04:52:41 -07:00
Sean Barrett ef861421e2 stb.h: stb_splitpath correctly handles relative paths with explicit drive specifiers 2021-08-28 03:20:04 -07:00
Sean Barrett 59e7dec3e8 delete file covered by patents 2021-08-13 13:57:23 -07:00
Sean Barrett 08e89524f6 Merge branch 'dev' of https://github.com/nothings/stb into dev 2021-08-13 13:57:07 -07:00
Fabian Giesen 5ba0baaa26 stb_image: Reject fractional JPEG component subsampling ratios 
The component resamplers are not written to support this and I've
never seen it happen in a real (non-crafted) JPEG file so I'm
fine rejecting this as outright corrupt.

Fixes issue #1178.
 2021-07-25 20:24:10 -07:00
Sean Barrett c404b789ca stb_truetype: fix sample code drawing characters upside-down 2021-07-25 19:22:47 -07:00
Sean Barrett 1401f2257d clean up project file 2021-07-25 19:22:47 -07:00
Sean Barrett 7c65d5621f fix compiling with NO_HDR NO_LINEAR 2021-07-25 19:22:47 -07:00
Sean Barrett be901954b2 stb_truetype: fix sample code drawing characters upside-down 2021-07-12 23:47:20 -07:00
Sean Barrett 7de8f7999b Merge branch 'master' into dev 2021-07-12 23:47:13 -07:00
Sean Barrett 3a1174060a opengl stb_truetype demo app 2021-07-12 21:27:12 -07:00
Sean Barrett 4adb57af42 clean up project file 2021-07-12 15:58:08 -07:00
Sean Barrett cd6b6f70ec fix compiling with NO_HDR NO_LINEAR 2021-07-12 15:57:39 -07:00
Sean Barrett a0a939058c update README 2021-07-12 01:50:47 -07:00
Sean Barrett 5a0bb8b1c1 update readme 2021-07-12 01:39:27 -07:00
Sean Barrett c4ef8e1fdc fix version date 2021-07-12 01:23:29 -07:00
Sean Barrett 7023e273f1 fix stb_dxt version 2021-07-11 18:06:46 -07:00
Fabian Giesen 5324597dcb README: update stb_dxt version for fix 2021-07-11 17:58:19 -07:00
Fabian Giesen 3cfb892cf3 stb_dxt: Fix bug in table generator 
Forgot to put the *100 back, oops.
 2021-07-11 17:58:00 -07:00
Sean Barrett 1ee679ca2e update version numbers 2021-07-11 17:07:54 -07:00
Sean Barrett fd7807e92d stb_c_lexer: allow including stb_c_lexer.h without defining overrides (all tokens are always defined; token values have changed) 2021-07-11 16:37:34 -07:00
Sean Barrett 0be82e4814 stb_truetype: fix incorrect antialiasing computation in v2 rasterizer, and handle certain cases where math blew up 2021-07-11 16:26:02 -07:00
Sean Barrett e05ecc05ee Fix compiling-as-C-pre-C99 issues 2021-07-11 15:26:16 -07:00
Sean Barrett 38c15ee7cf
Merge pull request #1165 from randy408/dev-fix 
Fix CIFuzz integration
 2021-07-11 13:28:24 -07:00
Randy af4c673174 change directory for seed corpus downloads 2021-07-10 15:51:11 +02:00
Randy a0a8653a7d attempt to fix issue with CIFuzz 2021-07-10 15:29:39 +02:00
ocornut 818ac26785 stb_rect_pack: making functions cdecl for msvc qsort 2021-07-09 19:26:36 -07:00
Fabian Giesen c8e3d3086d stb_truetype: Small tweaks to make PVS Studio happy 
No actual bugs as far as I can tell.

Fixes issue #1162.
 2021-07-09 18:49:15 -07:00