mirrors
/
nothings-stb
mirror of https://github.com/nothings/stb.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
2,173 Commits 2 Branches 0 Tags 17 MiB
Commit Graph

457 Commits

Author SHA1 Message Date
kroko / Reinis Adovičs 756166e853
fix comma warnings when building with -Wcomma 
Happens on standard Xcode Version 9.2 (9C40b) configuration (using Apple LLVM version 9.0.0 (clang-900.0.39.2)). Addresses https://github.com/nothings/stb/issues/515
 2018-04-25 15:19:29 +03:00
JR d0ae424061 Re added unicode filename support for stb_image and stb_image_write with whitespace issues fixed. 2018-02-20 21:38:00 -05:00
luz.paz 622b3adad3 Misc. comment typos 
Found via `codespell -q 3`
 2018-02-12 14:54:22 -05:00
Sean Barrett fa2a1d9b3b stb_image version number 2018-02-11 11:57:40 -08:00
Sean Barrett cd62aa9714 docs 2018-02-11 11:42:05 -08:00
Sean Barrett 0ba9ff6599 stb_image: fix unused variable warning 2018-01-31 07:50:07 -08:00
Sean Barrett a9672961c9 more cases of STB_NO_HDR and STB_NO_LINEAR interfering 2018-01-30 05:45:59 -08:00
Sean Barrett 602e986824 fix STBI_NO_HDR and STBI_NO_LINEAR to compile correctly even if you don't #include <math.h> 2018-01-30 05:39:29 -08:00
Sean Barrett ccee11ad79 stb_image: fix warnings 2018-01-30 05:28:37 -08:00
Sean Barrett dfff6f5e7c stb_image: fix assert macro usage; stb_vorbis: changelog 2018-01-29 13:15:10 -08:00
Sean Barrett 037926ab74 fix warnings, bad error handling 2018-01-29 08:18:19 -08:00
Sean Barrett b2c2419b1b stb_image: avoid arithmetic overflow in png case 2018-01-29 08:14:53 -08:00
Sean Barrett 4fd9019c0f stb_image: avoid signed left shifts 2018-01-29 07:57:23 -08:00
Sean Barrett 74a21dc615 fix compiler warnings 2018-01-29 07:52:21 -08:00
Sean Barrett 9b2522c3d5 stbi_is_hdr_from_file needs to reset file position 2018-01-29 07:48:12 -08:00
Sean Barrett d808adb77f stb_dxt: fix bug with constant color & varying alpha 2018-01-29 05:17:07 -08:00
Sean Barrett 5db03ef592 Merge branch 'master' into working 
Conflicts:
	stb_image.h
 2018-01-29 04:04:28 -08:00
Sean Barrett 094cb31ec8 stb_image: compile as C; stb_image_write: credits 2018-01-29 04:03:18 -08:00
Sean Barrett ae00f3a5f0 stb_image credits 2018-01-29 03:50:42 -08:00
Sean Barrett 1b9689cf77 Merge branch 'feature/gif_frames' of https://github.com/tocchan/stb 2018-01-29 03:50:03 -08:00
Sean Barrett f9d78c05a9 stb_image credits 2018-01-29 03:49:53 -08:00
Sean Barrett edf35ad14c Merge branch 'master' of https://github.com/jlnr/stb 2018-01-29 03:43:08 -08:00
Sean Barrett 0bd0d049e7 stb_image docs 2018-01-29 03:42:34 -08:00
Sean Barrett ead2b3fe2c Merge branch 'stbi_is_16' of https://github.com/anael-seghezzi/stb 2018-01-29 03:38:04 -08:00
Sean Barrett 72ef9dcbad fix fall-through case warning, add credit 2018-01-29 03:27:58 -08:00
Sean Barrett 8cc624142b credits 2018-01-29 03:25:02 -08:00
Sean Barrett 82f1929de5 Merge branch 'patch-1' of https://github.com/darealshinji/stb 2018-01-29 03:23:53 -08:00
Sean Barrett da4b342213 credits 2018-01-29 03:23:45 -08:00
Sean Barrett ab4fb5c38a Merge branch '1bit_bmp' of https://github.com/plzombie/stb 2018-01-29 03:22:12 -08:00
Sean Barrett b0383facf8 Merge branch 'master' of https://github.com/lieff/stb 2018-01-29 03:20:21 -08:00
Sean Barrett 39241e4928 update version number 2018-01-29 02:53:14 -08:00
Sean Barrett 593c9b7192 rewrite stbi__shiftsigned to use a different, faster algorithm 
to avoid probelm with clang -O2 to outputting buggy code
 2018-01-29 02:30:34 -08:00
Chris Forseth de75509b1c Remove a nullptr 2017-11-27 23:42:13 -06:00
Chris Forseth 03b4bbc5d2 Fix a disposal flag mistype. 
Only clear to background color if index is non-zero.
Fixed a the disposal test gif I was using - now renders properly (gif has no transparent set, but all renderers still considered it transparent.  Spec says 0 should be ignored if 0, but was confusing by saying it only in the context of the pal not existing.. but seems to be the case always.
 2017-11-27 23:32:44 -06:00
Chris Forseth 28c28b0bd2 Per the contributor doc - added my name. Noticed urraka also did some work here, so hopefully didn't step on any toes. 
- Fix an issue where the spec of the gif for restore to previous uses code 3, not 4.
- To get results that worked - made an assumption that "clear to background" meant "revert back to what was there before I drew", where mode 1 would revert back to the previous frame [slightly different].  If I clear to background color instead, I ended up with large opaque squares in gifs that changes their transparent colour each frame.
- Background color is supposed to be used only for pixels not rendered by the image, so took that to mean it only really affected the previous frame, or potentially any frame that used full disposal.  Since background color is allowed to be unspecified this is what lead me to believe I shouldn't use it for disposal.
- Oh, also upped the codes table to 8192 as 4096 ended up being too small for a few of my test cases.

Full disclaimer - I only read through the GIF format for this contribution, so competly could be misinterpreting the spec - but this gave me reuslts that matched Chrome.
 2017-11-27 23:06:53 -06:00
Chris Forseth 87a3143fb4 GIF Loading - multiple frames; 
- Allow loading a gif as multiple frames into a single buffer.  Each frame is a full image seperated by a (w * h * comp) stride.
- Optionally, can pass in a pointer to a int, which will be filled with an array layers long contain ms for each frame.
- Fix gif's not loading the initial transparent background
- I believe also fix disposal rules for subsequent frames (though being somewhat inefficient with memory to do so)
- Add a flip_vertical that takes into account slices as well.

Compiled using VS2017, but nothing else as I'm not really setup for it.  Apologies.
 2017-11-27 22:41:51 -06:00
Julian Raschke 4bffebc5f0 Avoid warning about unused stbi__float_postprocess 2017-11-25 17:23:33 +08:00
Anaël Seghezzi fcf0b99601 add stbi_is_16 2017-11-24 14:36:37 +01:00
Anaël Seghezzi 4c1a786455 Revert "return comp info in bytes (support for 16 bit images)" 
This reverts commit 9dfa8c7f31.
 2017-11-24 14:35:14 +01:00
Anaël Seghezzi 9dfa8c7f31 return comp info in bytes (support for 16 bit images) 2017-11-24 13:44:39 +01:00
darealshinji b6b43df186 Use stbi__mad4sizes_valid() only if STBI_NO_LINEAR or STBI_NO_HDR are defined 2017-09-04 14:01:43 +02:00
Mikhail Morozov 350173026a stb_image: support for 1-bit BMP 2017-09-01 02:06:06 +03:00
lieff c06c9fe6bc place const tables to protected .rdata section 2017-08-31 19:33:28 +03:00
Sean Barrett 555efbedfc Update version numbers 2017-07-23 14:09:39 -07:00
Fabian Giesen 0fbbda56fa stb_image: Account for tRNS chunk in non-paletted images. 
So we report channels_in_file correctly.

Fixes #329.
 2017-07-23 01:41:12 -07:00
Fabian Giesen fedf03e774 Merge branch 'fix-issue-466' of https://github.com/rygorous/stb into dev 2017-07-22 19:42:52 -07:00
Fabian Giesen 282576fbfb Merge branch 'rygorous-fix-issue-276' into dev 2017-07-22 19:42:23 -07:00
Fabian Giesen 49c7f1b397 stb_image: Optimise vertical flip. 
This incorporates #462, but also factors everything into one
function that is shared between 8-bit integer, 16-bit integer, and
float pixels (vertical flip operates on rows of bytes and doesn't
really care), and finally always uses a 2k on-stack buffer without
dynamic memory allocation, doing multiple memcpys per row if
necessary. Not only does this remove an out-of-memory failure mode,
it is also preferable for large images, since it's more
L1-cache-firendly this way.

Fixes #462.
 2017-07-22 18:43:36 -07:00
Fabian Giesen 25a2596b2f stb_image: Fix rounding during unpremultiply. 
This is the same method as in pull request #455, but using integer
arithmetic instead of converting to float.

Fixes #455.
 2017-07-22 15:59:41 -07:00
Fabian Giesen 463dd85f1f Merge branch 'Reedbeta-fix-vs2015-warnings' into dev 2017-07-22 15:51:28 -07:00
Fabian Giesen 69ef103721 Merge branch 'poppolopoppo-load_16_variants' into dev 2017-07-22 15:42:58 -07:00
Fabian Giesen 316571b395 stb_image: 3-char indent and other minor formatting issues. 2017-07-22 15:38:56 -07:00
Fabian Giesen 14c2993310 Merge branch 'realitix-robustify' into dev 2017-07-22 15:23:14 -07:00
Fabian Giesen cc7f1d1e6d stb_image: Documentation fixes. 
req_comp is now desired_channels and *comp is *channels_in_file.

Fixes issue #466.
 2017-07-21 22:35:01 -07:00
Fabian Giesen 0674660451 stb_image: Relax raw_len validation for non-interlaced PNGs. 
We used to require exact match between img_len and raw_len for
non-interlaced PNGs, but the PNG in issue #276 has extra bytes
(all zeros) at the end of the compressed DEFLATE stream.

The PNG spec doesn't have anything to say about it (that I
can tell), and if libpng accepts this, who are we to judge.

Fixes issue #276.
 2017-07-21 21:55:37 -07:00
Nathan Reed 76a1a1c408 Fix variable-shadowing warnings 2017-05-11 22:49:19 -07:00
Nathan Reed 7091cb6ed6 Fix integer conversion warning 2017-05-11 22:48:46 -07:00
PopPoLoPoPpo 9bcda8bb1c Add stbi_load_16() variants to load from memory or callbacks 2017-05-05 00:39:08 +02:00
Sean Barrett 84e42c2e8d fix stbi_shiftsigned to be shifting a value that's unsigned 2017-04-28 23:35:37 -07:00
Jean-Sebastien Bevilacqua d8796f05bf Robustify stbi__sse2_available in stb_image.h 
Function `stbi__sse2_available` takes no argument,
we should be explicit by passing `void` as argument.
It will remove warnings from 'some' compilers.
 2017-04-25 21:02:48 +02:00
Kevin Schmidt 97ae5fb3db Edit contributor list. 2017-04-18 17:36:48 +02:00
Kevin Schmidt 1dfdf5558d Fix STBI_NO_STDIO. 2017-04-18 16:17:27 +02:00
Sean Barrett d795785f3d docs 2017-03-18 18:50:06 -07:00
Sean Barrett 56a61e178f reorganize contributor list (removing one redundant name and adding one new one as well) 2017-03-18 18:48:09 -07:00
Sean Barrett c79fa78ee8 tweaks to previous merge 2017-03-18 18:42:54 -07:00
Sean Barrett 351489803f Merge branch 'phprus-patch-1' of https://github.com/phprus/stb into working 2017-03-18 18:41:15 -07:00
Sean Barrett 2de9961443 docs 2017-03-18 18:39:06 -07:00
Sean Barrett 90e8658d80 Merge branch 'fix_stbimage_pnm_load' of https://github.com/rygorous/stb into working 2017-03-18 18:37:20 -07:00
Sean Barrett d9e7c55bd7 minor docs for last merge 2017-03-18 18:35:30 -07:00
Sean Barrett 97c58e3891 Merge branch 'fix_stbimage_gcc_sse2' of https://github.com/rygorous/stb into working 2017-03-18 18:34:17 -07:00
Sean Barrett 24fa816116 merge https://github.com/nothings/stb/pull/427 but I messed up the merge 
so you don't get the automatic info you normally do
 2017-03-18 18:32:35 -07:00
Sean Barrett 6d60610348 tweaks to previous merge 2017-03-18 18:15:41 -07:00
Sean Barrett 00c2545510 Merge branch 'rgb-detect' of https://github.com/jeremysawicki/stb into working 2017-03-18 18:08:00 -07:00
Sean Barrett 8fe48099cc add comment for next fix prematurely 2017-03-18 18:07:51 -07:00
Sean Barrett 5bbe1d8c2a fixes to that PR 2017-03-18 18:03:34 -07:00
Sean Barrett 55112399e6 Merge branch 'master' of https://github.com/uTox/stb into working 2017-03-18 17:47:54 -07:00
Sean Barrett be6d13cd6d fix bug in png decoding with 1,2,4-bpp images using filter that samples previous line 2017-03-18 10:54:22 -07:00
Vladislav 667f35578b statically initialize 2017-03-08 21:16:50 +05:00
Fabian Giesen 22c72a069c stb_image: Support optional args consistently. 
My guideline for the rules is the PNG loader (which I consider
"canonical"). In the _load functions, x and y are required but
comp is optional; in the _info functions, all three are optional.

Fixes issue #411 (and other related, unreported issues).
 2017-03-04 21:17:09 -08:00
Fabian Giesen 3e17544873 stb_image: Give up trying to runtime-detect SSE2 on GCC. 
We tried but it was nothing but trouble. New rule: with
GCC/Clang, if you're compiling with -msse2, you get always-on
SSE2 code, otherwise you don't get any. Trying to ship
anything with proper runtime dispatch requires both working
around certain bugs and some fiddling with build settings,
which runs contrary to the intent of a one-file library,
so bail on it entirely.

Fixes issue #280.
Fixes issue #410.
 2017-03-04 20:49:14 -08:00
Jeremy Sawicki 9e76bb5108 stb_image: JPEG: Improved detection of RGB images 2017-03-03 16:24:21 -08:00
Gregory Mullen (grayhatter) 16c83cd5fc
Fix a pair of warnings in stb_image.h 2017-03-03 11:26:34 -08:00
Sean Barrett 6a3d4786c9 Merge branch 'unknown-marker' of https://github.com/jeremysawicki/stb into working 2017-03-03 08:40:07 -08:00
Sean Barrett 7e389e85c1 Merge branch 'dnl-segment' of https://github.com/jeremysawicki/stb into working 2017-03-03 08:39:31 -08:00
Sean Barrett 15c7e06dc8 Merge branch 'junk-before-marker' of https://github.com/jeremysawicki/stb into working 2017-03-03 08:38:06 -08:00
Sean Barrett dc6089f05b tweak fill byte PR 2017-03-03 08:37:30 -08:00
Sean Barrett 50ae79d811 Merge branch 'fill-bytes' of https://github.com/jeremysawicki/stb into working 2017-03-03 08:36:03 -08:00
Sean Barrett a6dc061137 tweak 16-bit quantization for clarity 2017-03-03 08:35:14 -08:00
Sean Barrett 0befbc3d78 Merge branch 'dequant-16-bits' of https://github.com/jeremysawicki/stb into working 2017-03-03 08:31:57 -08:00
Sean Barrett 014af7b78a Merge branch 'component-ids' of https://github.com/jeremysawicki/stb into working 2017-03-03 08:30:57 -08:00
Sean Barrett 786ac92daa tweak RGB-to-Y conversion 2017-03-03 08:30:49 -08:00
Sean Barrett 64e1799f24 Merge branch 'rgb-grayscale' of https://github.com/jeremysawicki/stb into working 2017-03-03 08:25:29 -08:00
Sean Barrett 8905cb9a8e Merge branch 'patch-1' of https://github.com/RufUsul/stb into working 2017-03-03 08:21:46 -08:00
Sean Barrett 47685c5f84 remove deprecated old-precision jpg path from stb_image.h 
tweak license reference wording
 2017-03-03 08:19:09 -08:00
Sean Barrett e248e30954 change license to public-domain AND mit (based on twitter vote) 2017-03-03 07:53:07 -08:00
Jeremy Sawicki f5f7dc02a1 stb_image: JPEG: Provide failure reason for unknown marker 2017-03-03 01:11:34 -08:00
Jeremy Sawicki 2219a6da29 stb_image: JPEG: Accept DNL segment 2017-03-03 00:13:27 -08:00
Jeremy Sawicki 6f5677946c stb_image: JPEG: Accept non-zero junk bytes at the end of image data 2017-03-02 23:48:02 -08:00
Jeremy Sawicki 344c3f73d5 stb_image: JPEG: Accept fill bytes in stbi__grow_buffer_unsafe 2017-03-02 23:10:03 -08:00
Jeremy Sawicki e08d398671 stb_image: JPEG: Accept 16-bit quantization tables 2017-03-02 22:32:30 -08:00
Jeremy Sawicki 34fa37bbb4 stb_image: JPEG: Accept any component IDs 2017-03-02 21:40:40 -08:00
Jeremy Sawicki cb7ffb2408 stb_image: Update contributors 2017-03-02 18:19:21 -08:00
Jeremy Sawicki 552c548a0e stb_image: JPEG: Convert RGB to grayscale properly 2017-03-02 18:06:10 -08:00
themanagainstthetank 7e989db555 update stb_image.h 
int raw_data[4] to 0, or the compiler bugs
 2017-01-16 18:12:31 +08:00
Sean Barrett 96620a3a54 update version numbers 2017-01-16 00:51:24 -08:00
Sean Barrett dead3815e2 credits 2017-01-16 00:05:58 -08:00
Sean Barrett 28c24f7b83 Merge branch 'fix-truncation' of https://github.com/sammyhw/stb into working 2017-01-15 23:58:26 -08:00
Sean Barrett 48710234f2 credits; 1/2/4-bit png fix; easy font spacing; NO_STDIO in image_write 2017-01-15 23:57:53 -08:00
Thomas Ruf f07727a28a stb_image.h: large structures on the stack 
more of "allocate large structures on the stack", this time in the forgotten stbi__jpeg_test
-> avoids the infamous _chkstk() when working with CRT
 2016-12-28 14:16:45 +01:00
sammyhw ec9db6f84b allow for all 16 bits 2016-12-15 23:49:19 -05:00
Sean Barrett b61b7a74fa update version info 2016-12-04 05:40:21 -08:00
Sean Barrett 7bcaa93a76 Merge branch 'master' of https://github.com/Zelex/stb into merging 
Also add more credits
Also fix linking multiple copies with STB_IMAGE_STATIC

Conflicts:
	stb_image.h
 2016-12-04 05:38:47 -08:00
Sean Barrett 7759a2a93d fix "misleading indentation" gcc warning 2016-12-04 05:25:24 -08:00
Sean Barrett ae241feec4 Merge branch 'stb_img_overflows' of https://github.com/rygorous/stb into working 
Conflicts:
	stb_image.h
 2016-12-04 05:20:57 -08:00
Sean Barrett 7736399517 return 16-bit PSDs through 16-bit API (untested) 2016-12-04 05:13:58 -08:00
Sean Barrett e0700d8e2c 16-bit png changes 2016-11-29 04:13:17 -08:00
Sean Barrett 239a6718e1 rename stbi_load parameters to reduce confusion 2016-11-29 03:03:07 -08:00
jon 2a170daee5 warning fixes, more RGBE fix 2016-11-28 16:24:11 -06:00
jon a2defc3d7a added support for RGBE header HDR files 2016-11-28 16:05:39 -06:00
Fabian Giesen 6b66033e18 stb_image: Fix memory leak and missing out-of-mem check. 
stbi__process_frame_header had two bugs when dealing with progressive
JPEGs:
1. when malloc failed allocating raw_data, previous components'
   raw_coeff didn't get freed
2. no out-of-memory check in raw_coeff allocation

Fix both and share a bit more cleanup code in general.
 2016-10-22 00:29:37 -07:00
Fabian Giesen 62f372754f stb_image: Fix HDR/PSD RLE decoders. 
Runs need to be bounds checked.

Fixes issues #315, #317.
 2016-10-22 00:29:37 -07:00
Fabian Giesen 02190634c2 stb_image: Overflow checking for image allocs. 
Adds some helpers that check whether a product of multiple
factors (that need to be non-negative: this is enforced)
summed with another non-negative value overflows when
performed as int. Since stb_image mostly works in ints,
this seems like the safest route. Limits size of images
to 2GB but several of the decoders already enforce this
limit (or even lower ones).

Also adds wrappers for malloc that combine a mul-add-with-
overflow-check with the actual malloc, and return NULL
on failure. Then use them when allocating something that
is the product of multiple factors.

For image formats, also add a top-level "is this too big?"
check that gives a more useful error message; otherwise,
the failed mallocs result in an "out of memory" error.
The idea is that the top-level checks should be the primary
way to catch these bugs (and produce a useful error message).
But a misleading error message is still vastly preferable to
a buffer overflow exploit.

Fixes issues #310, #313, #314, #318. (Verified with the
provided test images)

Along the way, this fixes a previously unnoticed bug in
ldr_to_hdr / hdr_to_ldr (missing NULL check); these functions
are called with the result of an image decoder, so NULLs can
definitely happen.

Another bug noticed along the way is that handling of
interlaced 16-bit PNGs was incorrect. Fixing this (along
with the previous modifications) fixes issue #311.

Yet another bug noticed during this change is that reduce_png
did not check the right pointer during its out of memory
check. Fix that too.
 2016-10-22 00:29:37 -07:00
Fabian Giesen 8c8d735eb7 stb_image: More input validation in deflate decoder 
Fixes issue #312.
 2016-10-22 00:29:37 -07:00
Sean Barrett fdca443892 fix crash in 2.11 2016-04-02 07:29:34 -07:00
Sean Barrett 6e4154737c update version numbers, documentation, and contributors 2016-04-02 04:51:26 -07:00
Sean Barrett 7a694bdcca re-enable SSE2 code on x64 except with gcc 2016-04-02 04:01:59 -07:00
Sean Barrett 201af99d9f return correct # of channels for PNG 2016-04-02 03:49:46 -07:00
Sean Barrett 591c7f8cb3 remove white matting when loading transparent PSD 2016-04-02 03:44:50 -07:00
Sean Barrett c03f4b3c2f Merge branch 'patch-1' of https://github.com/kinetiknz/stb 2016-04-02 02:57:34 -07:00
Sean Barrett 097a70ae38 Merge branch 'master' of https://github.com/tulrich/stb 2016-04-02 02:56:39 -07:00
Sean Barrett a013c036f3 initialize bmp mr/mg/mb/ma properly 2016-04-02 02:54:25 -07:00
Sean Barrett 406d537b41 Merge branch 'initial_png_16bpc' of https://github.com/socks-the-fox/stb into working 2016-04-02 02:41:16 -07:00
Sean Barrett efdfbb3c7c Merge branch 'master' into working 2016-04-01 21:43:22 -07:00
Sean Barrett 50479cb07c stb_image: allow jpegs that are rgb not YCrCb 2016-03-26 15:46:59 -07:00
Matthew Gregan 94f2ceac15 Fix typo in stbi__parse_uncompressed_block 2016-03-12 01:55:59 +13:00
Thatcher Ulrich 7e1ee2d386 Allocate large structure using malloc instead of stack. 2016-03-02 15:56:53 -05:00
Thatcher Ulrich 291ad22e84 Replace large stack allocations with dynamic allocations. 2016-03-02 15:31:07 -05:00
Craig Donner ee6978cb68 Slightly modify the public domain license to keep it in the public domain, but make it clear that even when dedications might not be recognized that the code is still usable. Given that this isn't dual-licensing under a different license, I'm hoping this will be acceptable. 2016-02-25 12:55:44 -08:00
Socks the Fox eb84b2179b Initial 16 bit per channel PNG support 2016-01-22 12:42:40 -06:00
Sean Barrett 30015ef464 attempt to fix unused var warnings in stb_image 2.09 2016-01-22 04:06:28 -08:00
Sean Barrett 472c4c82a4 update version history 2016-01-16 10:00:19 -08:00
Sean Barrett ac748cba9b update contributor list, version history, version number 2016-01-16 09:57:04 -08:00
Sean Barrett 82ca643ef3 change previous explicitly-sized realloc support to be new API and unbreak old API 2016-01-16 09:47:22 -08:00
Sean Barrett 853fda6132 Merge branch 'alt_realloc' of https://github.com/romigrou/stb into working 2016-01-16 09:38:13 -08:00
Sean Barrett c8e50127c5 contributor list 2016-01-16 09:37:34 -08:00
Sean Barrett 32d5e7ca7f Merge branch '16bit-tga' of https://github.com/DanielGibson/stb into working 2016-01-16 08:15:58 -08:00
Sean Barrett 9cb29b6b39 update and reorganize contributor list 2016-01-16 08:13:55 -08:00
Sean Barrett 5746aa023a Merge branch 'stbi_hdr_info_overread' of https://github.com/baldurk/stb into working 2016-01-16 08:05:51 -08:00
Sean Barrett e30b75af8b update contributor list 2016-01-16 08:05:40 -08:00
Sean Barrett c7e24f4c4c Merge branch 'master' of https://github.com/svdijk/stb into working 2016-01-16 08:03:22 -08:00
Sean Barrett 1964d53d70 update version number and version history with everything committed to date 2016-01-16 08:01:42 -08:00
Romain Bailly 7e741ffc1e Added the old size as argument to the STBI_REALLOC() and STBIW_REALLOC() macros 2016-01-14 10:34:30 +01:00
Daniel Gibson 87a0396922 stb_image.h: 16 bit TGAs don't really have an alpha channel 
I claimed that if the most significant bit of a 16bit pixel is set,
it should be opaque (as is suggested by some sources on the internet),
but implemented the opposite.
If implemented "correctly", lots of 16bit TGAs become invisible.. so I
guess 16bit TGAs aren't really supposed to have an alpha-channel, or at
least most 16bit TGAs (despite having set an "alpha-bit" in the "image
descriptor byte") in the wild don't seem to work like that.

So just assume 16bit non-greyscale TGAs are always STBI_rgb without
an alpha channel.
 2015-12-06 05:47:47 +01:00
Daniel Gibson d235049322 stb_image.h: Fix TGA colormap support 
* Calculate correct stb format (incl. proper 16bit support) also when
  using a colormap (palette)
* Create colormap with tga_comp, to correctly support 16bit RGB
  (instead of using tga_palette_bits/8 and just copying the data)
* For TGAs with colormap, the TGA bits per pixel field specifies the
  size of an index to the colormap - the "real" color depth
  of the image is saved in the color map specification's bits per pixel
  field. I think only 8 and 16bit indices make sense (16 should be
  supported, otherwise the colormap length could be u8 instead of u16),
  so I added support for both.
* Helper functions stbi__tga_get_comp() to calculate stb pixelformat and
  stbi__tga_read_rgb16() to read one 16bit pixel and convert it to
  24/32bit RGB(A) - for less duplicate code
 2015-12-06 04:33:37 +01:00
Daniel Gibson 57409c3d15 stb_image.h: Improve stbi__tga_info() and stbi__tga_test() 
* for paletted images, .._info()'s comp should be based on the palette's
  bits per pixel, not the images bits per pixel (which describes the
  size of an index into the palette and is also checked now)
* make sure the color (map) type and the image type fields of the header
  are consistent (=> if TGA color type is 1 for paletted, the TGA image
  type must be 1 or 9)
* .._test() does some more checks and uses stbi__get16le() instead of
  stbi__get16be() - TGA is little endian.
* .._test() now always rewinds (sometimes it used to do only return 0;
  without rewinding)
* remove "error check" at the beginning of stbi__tga_load(), because
  all that is already tested in stbi__tga_test()
 2015-12-06 04:33:30 +01:00
Daniel Gibson 7453e1bfa4 stb_image.h: Support 15/16bit per pixel RGB(A) TGAs 
stbi__tga_* assumed that 16bit TGAs were Grayscale + Alpha.
However, if the TGA imagetype is not one of the gray ones, it's 16Bit
RGB data, with 5 Bits per channel. If the TGA image descriptor field
has alpha bits (the 3 least significant ones) set, the pixel's most
significant bit is for alpha: 1 for opaque and 0 for translucent.
Furthermore people claim that TGAs can also pretend to have 15bpp,
which is the same as 16bpp but definitely without alpha.

So 15/16bpp TGAs are now decoded to STBI_rgb(_alpha).
 2015-12-06 00:25:22 +01:00
baldurk 4337345c5d Prevent HDR info function from trashing stbi context by over-reading 2015-11-14 13:14:26 +01:00
Sean Barrett 297ff62859 change bmp info to use common header parser 2015-11-08 13:09:16 -08:00
Sean Barrett 876aea3dbe refactor bmp header parser for sharing with stbi_info 2015-11-08 01:22:30 -08:00
Sean Barrett 0615df6c9b allows comments in pgm/ppm headers 2015-11-08 00:45:17 -08:00
svdijk 9f1a587d22 stb_image.h: Fix/add some comments. 2015-11-05 23:34:44 +01:00
svdijk 8603c6e809 stb_image.h: Only define stbi__l2h_{gamme,scale} when needed. 
This fixes a (well, actually the only) compiler warning.
 2015-11-05 23:32:40 +01:00
Sean Barrett 6b8938124e Merge branch 'fix-vs2015-warnings' of https://github.com/Reedbeta/stb into working 2015-09-13 11:09:23 -07:00
Sean Barrett d5b8af12cb fix missing "defined" in #if defined(STBI_NO_foo); 
fix incorrect initialization of alpha channel for RGB PSD
 2015-09-13 11:08:40 -07:00
Nathan Reed 36574182c0 Fix new VS2015 warnings in stb_image 2.07 
- conversion from int to stbi_uc
- unused parameter
 2015-09-13 11:00:46 -07:00
Sean Barrett 90dc93a1cc fix bug where we couldn't rewind a file that reached EOF, which can happen with < 92-byte PIC,PNM,HDR,TGA 2015-09-13 05:41:21 -07:00
Sean Barrett 28a29dd0f1 credit for michaelangel007 patch 2015-09-13 05:15:09 -07:00
Sean Barrett ddd05479e9 Merge branch 'master' of https://github.com/Michaelangel007/stb into working 2015-09-13 05:13:57 -07:00
Sean Barrett 0eb5da55a7 er, fix typo in the fix-rmitton checkin 2015-09-13 05:12:53 -07:00
Sean Barrett 082289b528 Merge branch 'master' of https://github.com/rmitton/stb into working 2015-09-13 05:12:35 -07:00
Sean Barrett 5607c25cf4 tweak rmitton 16-bit psd patch; 
adjust credits
 2015-09-13 05:11:51 -07:00
Sean Barrett 69d6fd573c Merge branch 'psd16' of https://github.com/rmitton/stb into working 2015-09-13 04:58:48 -07:00
Sean Barrett 1ea670e0a5 Merge branch 'urraka-gif-patch' of https://github.com/urraka/stb into working 2015-09-13 04:49:04 -07:00
Sean Barrett 52d400741c detect all 0-alpha bmp and replace with all-255; 
fix bug in reedbeta patch
 2015-09-13 04:46:50 -07:00
Sean Barrett fee80f3d83 tweaks to patch from reedbeta 2015-09-13 04:27:24 -07:00
Nathan Reed 26c98260b6 Fix warnings about "conversion to a greater size" that appear in VS2015 in x64 with /W4. 
The warning concerns the return value of stbi_err, which is an int, being converted to a pointer. In VS2015 it seems casting directly from a 32-bit int to a 64-bit pointer triggers this warning. Worked around by first converting to a 64-bit int (here size_t) and then to a pointer.
 2015-09-10 01:20:35 -07:00
Nathan Reed 6d613ed8ce Fix variable-shadowing warnings that appear in VS2015 on /W4 2015-09-10 01:13:54 -07:00
Sean Barrett 7ac0f9c9b0 fix typo in accidentally-checked-in stb_image.h 2015-09-03 22:55:01 -07:00
Sean Barrett 60939ec653 fix some more signed shifts 2015-09-03 11:18:40 -07:00
urraka 23dfb8c06b GIF loading improvements. 
- Fixed possible memory leak.
- Fix for transparent backgrounds.
- Adapted internal function to allow proper animation loading.
 2015-08-03 22:59:16 -03:00
Sean Barrett c9859afcf9 reverse some of the public-domain-license changes that I didn't 
actually want
 2015-08-01 23:53:49 -07:00
Ryan Whitworth f0e456b809 Added public domain license text 2015-08-01 14:52:12 -04:00
rmitton 6645ea5915 Fixed stupid endianness bug. 
Incorrect endianness hilariously doesn't manifest _if_ the original
image was upconverted from 8-bit to 16-bit.
 2015-07-24 12:00:09 -07:00
rmitton 608cbec1f5 Fixed overflow for high values. 
0xffff would accidentally round to 0x10000.
 2015-07-07 15:47:37 -07:00
rmitton a371b204f5 Added support for 16-bit PSD loading. 
This extends the current PSD loader to add support for 16-bit images, by
quantizing them down to 8-bit upon load.
 2015-07-07 15:15:38 -07:00
rmitton fcfa17b847 Fixed double-free in JPEG allocation 
It was incorrectly setting the wrong field to NULL, causing it to get
freed again later.
 2015-07-06 13:32:40 -07:00
Michaelangel007 c11532b872 Cleanup unused functions 2015-06-30 08:54:14 -06:00
Michaelangel007 2762b410fe Fix unused vars warning in stbi_is_hdr_from_file stbi_is_hdr_from_callbacks 2015-06-30 08:02:24 -06:00
Sean Barrett aa89970d6b stb_image.h: fix *comp value when loading PSDs 
stb_voxel_render.h: fix STBVOX_CONFIG_OPTIMIZED_VHEIGHT
 2015-05-28 22:11:45 -07:00
Sean Barrett 947bdcd027 update version numbers & docs 2015-04-19 04:19:55 -07:00
Sean Barrett 8f9c8b682d Merge branch 'master' of https://github.com/nguillemot/stb 2015-04-19 04:17:21 -07:00
Sean Barrett ac5e25ae01 bump stb_image to version 2.05, tweak docs 2015-04-19 04:15:33 -07:00
Fabian Giesen f224bc2cdb stb_image: Progressive AC decoding - fix ZRL code. 
The original AC decoding logic handled ZRL (runs of 16 zeros)
incorrectly.

The problem is that the original flow set r=16 and skipped the
final coeff write when s=0. This is not actually correct. The
problem is the intervening "refinement" bits.

With the original logic, even once we decrement r to 0, we keep
reading more refinement bits for subsequent coefficients until
we find the next currently-unsent AC in the current scan. That is,
it works as if it was trying to place 17 new AC values, and only
bails at the last minute from actually setting that 17th value.

This is wrong. Once we've found the 16th previously-unsent AC, we
need to stop reading refinement bits, otherwise we get out of sync
with the bit stream (which expects us to read a huffman code next).

The easiest fix is to just do what the JPEG standard implicitly
assumes anyway: treat ZRL as a run of 15 zeros followed by an
explicit magnitude-zero AC coeff. (That is, leave s=0 and actually
write s). So this is what this fix does.
 2015-04-19 01:49:16 -07:00
Nicolas Guillemot 1894bede3f fix signed/unsignted compare warning 2015-04-18 21:23:34 -07:00
Sean Barrett d710ada2f9 try to re-enable SSE2 support by default on mingw 64-bit 2015-04-15 02:31:12 -07:00
Sean Barrett 66a75195dc rename STBI_X86_TARGET to STBI__X86_TARGET 2015-04-12 09:36:01 -07:00
Sean Barrett c83abb051a Merge branch 'mingwfix' of https://github.com/rygorous/stb into work2 
Conflicts:
	stb_image.h
 2015-04-12 09:33:26 -07:00
Sean Barrett e5fde30800 merge two x86/x64 tests into one; update credits 2015-04-12 09:30:05 -07:00
Sean Barrett c8852111cc Merge branch 'master' of https://github.com/pmj/stb into work2 2015-04-12 09:26:25 -07:00
Sean Barrett f22efc6151 update credits/docs 2015-04-12 09:26:16 -07:00