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038b6ab9ec
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442 Commits

Author SHA1 Message Date
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
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
7c65d5621f fix compiling with NO_HDR NO_LINEAR 2021-07-25 19:22:47 -07:00
Sean Barrett
1ee679ca2e update version numbers 2021-07-11 17:07:54 -07:00
Sean Barrett
08e4b18650 Merge branch 'dev' of https://github.com/nothings/stb into dev 2021-07-07 00:39:10 -07:00
Fabian Giesen
6ca560c9af stb_image: Update documentation for de-iPhone flag 
It's default off, not default on.

Fixes issue #651.
 2021-07-06 21:40:31 -07:00
Fabian Giesen
7e10880f53 stb_image: Update credits 2021-07-06 20:47:30 -07:00
Vladimír Vondruš
2c8cd33e2e stb_image: make unpremultiply and de-iPhone flags thread_local. 
Follows the change done for vertical flipping in
eb48fbdced for these two options as well.
 2021-07-06 20:46:41 -07:00
Fabian Giesen
1e82fd4a4e stb_image: BMP v4/v5 header parsing fixes 
As per MS's own docs, should ignore the r/g/b bitmasks in the
header unless BI_BITFIELDS compression is selected. Factor out
setting the default masks since that now exists in two branches.

Add some more checking for unsupported compression formats and
illegal bpp/compression combinations while I'm at it.

Fixes issue #783.
 2021-07-04 22:17:57 -07:00
Fabian Giesen
17bc84e15d stb_image: stbi__bmp_info only rewind stream on error 
To be consistent with the other info functions.

Fixes issue #892.
 2021-07-04 21:47:13 -07:00
Fabian Giesen
ab18d9b250 stb_image: Fix two bugs found via VC++ /analyze 
Also fixes issue #366.
 2021-07-04 21:42:44 -07:00
Fabian Giesen
82f9950cea stb_image: Update credits 2021-07-04 01:39:10 -07:00
Eugene Golushkov
db864a1e30 stb_image: fix building by MSVC for Windows 10 on ARM 2021-07-04 01:39:10 -07:00
Fabian Giesen
2506215e8a stb_image: Key Win32 UTF-8 support off _WIN32 not _MSC_VER 
So that it also works on MinGW.

Fixes issue #729.
 2021-07-04 01:39:10 -07:00
Fabian Giesen
991f1f6419 stb_image: Fix wrong buffer sizes passed to MultiByteToWideChar 
Fixes issue #772.
 2021-07-04 01:39:10 -07:00
Fabian Giesen
56a7113cd0 stb_image: Reorder format test sequence 
Put the formats that start with a clear magic number first,
the dodgy ones that don't have much of a distinctive header
should be tested for later after we've ruled out the clearer
ones.

Fixes issue #787, hopefully. (Never got a clean repro.)
 2021-07-04 01:39:10 -07:00
Fabian Giesen
618dbd01c8 stb_image: Document image size limits 
Both the buffer size limits and the image dimension limits.

Fixes issue #672.
 2021-07-04 01:39:10 -07:00
Fabian Giesen
4d3b93f589 stb_image: Erorr in BMP should error, not assert. 
There was both the assert and the error check; should just be
the error check.

Fixes issue #881 (or rather, part of it).
 2021-07-04 01:39:09 -07:00
Fabian Giesen
31ba943e3f stb_image: UB fix in stbi__get32le 
Need to do the second-part shift on uint32 not int.
 2021-07-04 01:39:09 -07:00
Fabian Giesen
d6ab7faec0 stb_image: Update comment 
As per recent patches, we do support 16-bit PNMs.
 2021-07-04 01:39:09 -07:00
Fabian Giesen
bb09317445 stb_image: Avoid left-shifts of signed values 
It's implementation-specified behavior. Writing this code and then
relying on compiler strength reduction to turn it back into shifts
feels extremely silly but it is what it is.

Fixes issue #1097.
 2021-07-04 01:39:09 -07:00
Fabian Giesen
43b32c7bab stb_image: Avoid shift of signed values in extend_receive 
Use an equivalent formulation that has sgn=0 or 1, not 0 or -1.
This avoids right-shifting signed values, at least in this place.

Fixes issue #1061.
 2021-07-04 01:39:09 -07:00
Fabian Giesen
6d857933d5 stb_image, stb_image_write: Fix compare sign warnings 
For the stb_image fix, also replace the magic 288 with a more
descriptive name while I'm at it.

Fixes #1100
 2021-07-04 01:39:09 -07:00
Fabian Giesen
265b73bb0b stb_image: Fix lrot definition, small extend_receive tweak 
Define lrot in a way that doesn't involve UB when n==0.
Also, the previous patch ensures that n <= 15 for all callers
of stbi__extend_receive, so can remove the (less restrictive)
bounds check for 0 <= n < 17 (the bounds of stbi__bmask)
entirely.

Fixes issue #1065.
 2021-07-04 01:39:09 -07:00
Fabian Giesen
86b7570cfb stb_image: Fix bug on JPEGs with malformed DC deltas 
extend_receive implicitly requires n <= 15 (code length);
the maximum that actually makes sense for 8-bit baseline JPEG is
11, but 15 is the natural limit for us because the AC coding path
stores the number of magnitude bits in a nibble.

Check that DC delta bits are in range before attempting to call
extend_receive.

Fixes issue #1108.
 2021-07-04 01:39:09 -07:00
Fabian Giesen
6ab6303f98 stb_image: Check results of all mallocs. 
A few were missing. Make sure to always report ouf-of-memory
errors.

Fixes issue #1056.
 2021-07-04 01:39:09 -07:00
Fabian Giesen
8e8f7d9b69 stb_image: Update credits, change log 2021-07-04 01:38:24 -07:00
Simon Breuss
8c15cc9c79 Adds 16-bit support for pnm files. 2021-07-04 01:38:24 -07:00
Jacko Dirks
c62af85657 stb_image.h: Suppress warnings about out_size, delay_size 
These two variables are unused on some targets, resulting in
warnings. Add STBI_NOTUSED around them to suppress those
warnings.
 2021-07-04 01:38:24 -07:00
Fabian Giesen
448bb137e3 stb_image: Better docs for stbi_info. 
Fixes #1026.
 2021-07-04 01:38:24 -07:00
Fabian Giesen
1203eb554b stb_image: Fix issue #994. 
Accidentally introduced during a merge.
 2021-07-04 01:38:24 -07:00
Fabian Giesen
5c0cc31fb0 stb_image: Update credits 2021-07-03 01:00:46 -07:00
Eugene Golushkov
69a7dd32a8 stb_image: fix building by MSVC for Windows 10 on ARM 2021-07-03 00:59:26 -07:00
Fabian Giesen
a0231a9e94 stb_image: Key Win32 UTF-8 support off _WIN32 not _MSC_VER 
So that it also works on MinGW.

Fixes issue #729.
 2021-07-03 00:46:04 -07:00
Fabian Giesen
e3a63f3793 stb_image: Fix wrong buffer sizes passed to MultiByteToWideChar 
Fixes issue #772.
 2021-07-03 00:38:30 -07:00
Fabian Giesen
3870fb6a93 stb_image: Reorder format test sequence 
Put the formats that start with a clear magic number first,
the dodgy ones that don't have much of a distinctive header
should be tested for later after we've ruled out the clearer
ones.

Fixes issue #787, hopefully. (Never got a clean repro.)
 2021-07-02 23:06:44 -07:00
Fabian Giesen
e795306bbc stb_image: Document image size limits 
Both the buffer size limits and the image dimension limits.

Fixes issue #672.
 2021-07-02 22:52:15 -07:00
Fabian Giesen
d343a29fe6 stb_image: Erorr in BMP should error, not assert. 
There was both the assert and the error check; should just be
the error check.

Fixes issue #881 (or rather, part of it).
 2021-07-02 22:01:23 -07:00
Fabian Giesen
41e93836d9 stb_image: UB fix in stbi__get32le 
Need to do the second-part shift on uint32 not int.
 2021-07-02 21:57:25 -07:00
Fabian Giesen
cf00c67c57 stb_image: Update comment 
As per recent patches, we do support 16-bit PNMs.
 2021-07-02 21:38:44 -07:00
Fabian Giesen
48632c1752 stb_image: Avoid left-shifts of signed values 
It's implementation-specified behavior. Writing this code and then
relying on compiler strength reduction to turn it back into shifts
feels extremely silly but it is what it is.

Fixes issue #1097.
 2021-07-02 21:09:11 -07:00