739 lines
35 KiB
C
739 lines
35 KiB
C
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/* stb_image - v2.26 - public domain image loader - http://nothings.org/stb
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no warranty implied; use at your own risk
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Do this:
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#define STB_IMAGE_IMPLEMENTATION
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before you include this file in *one* C or C++ file to create the implementation.
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// i.e. it should look like this:
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#include ...
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#include ...
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#include ...
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#define STB_IMAGE_IMPLEMENTATION
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#include "stb_image.h"
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You can #define STBI_ASSERT(x) before the #include to avoid using assert.h.
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And #define STBI_MALLOC, STBI_REALLOC, and STBI_FREE to avoid using malloc,realloc,free
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QUICK NOTES:
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Primarily of interest to game developers and other people who can
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avoid problematic images and only need the trivial interface
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JPEG baseline & progressive (12 bpc/arithmetic not supported, same as stock IJG lib)
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PNG 1/2/4/8/16-bit-per-channel
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TGA (not sure what subset, if a subset)
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BMP non-1bpp, non-RLE
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PSD (composited view only, no extra channels, 8/16 bit-per-channel)
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GIF (*comp always reports as 4-channel)
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HDR (radiance rgbE format)
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PIC (Softimage PIC)
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PNM (PPM and PGM binary only)
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Animated GIF still needs a proper API, but here's one way to do it:
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http://gist.github.com/urraka/685d9a6340b26b830d49
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- decode from memory or through FILE (define STBI_NO_STDIO to remove code)
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- decode from arbitrary I/O callbacks
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- SIMD acceleration on x86/x64 (SSE2) and ARM (NEON)
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Full documentation under "DOCUMENTATION" below.
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LICENSE
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See end of file for license information.
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RECENT REVISION HISTORY:
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2.26 (2020-07-13) many minor fixes
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2.25 (2020-02-02) fix warnings
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2.24 (2020-02-02) fix warnings; thread-local failure_reason and flip_vertically
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2.23 (2019-08-11) fix clang static analysis warning
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2.22 (2019-03-04) gif fixes, fix warnings
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2.21 (2019-02-25) fix typo in comment
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2.20 (2019-02-07) support utf8 filenames in Windows; fix warnings and platform ifdefs
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2.19 (2018-02-11) fix warning
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2.18 (2018-01-30) fix warnings
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2.17 (2018-01-29) bugfix, 1-bit BMP, 16-bitness query, fix warnings
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2.16 (2017-07-23) all functions have 16-bit variants; optimizations; bugfixes
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2.15 (2017-03-18) fix png-1,2,4; all Imagenet JPGs; no runtime SSE detection on GCC
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2.14 (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs
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2.13 (2016-12-04) experimental 16-bit API, only for PNG so far; fixes
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2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes
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2.11 (2016-04-02) 16-bit PNGS; enable SSE2 in non-gcc x64
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RGB-format JPEG; remove white matting in PSD;
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allocate large structures on the stack;
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correct channel count for PNG & BMP
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2.10 (2016-01-22) avoid warning introduced in 2.09
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2.09 (2016-01-16) 16-bit TGA; comments in PNM files; STBI_REALLOC_SIZED
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See end of file for full revision history.
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============================ Contributors =========================
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Image formats Extensions, features
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Sean Barrett (jpeg, png, bmp) Jetro Lauha (stbi_info)
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Nicolas Schulz (hdr, psd) Martin "SpartanJ" Golini (stbi_info)
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Jonathan Dummer (tga) James "moose2000" Brown (iPhone PNG)
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Jean-Marc Lienher (gif) Ben "Disch" Wenger (io callbacks)
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Tom Seddon (pic) Omar Cornut (1/2/4-bit PNG)
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Thatcher Ulrich (psd) Nicolas Guillemot (vertical flip)
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Ken Miller (pgm, ppm) Richard Mitton (16-bit PSD)
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github:urraka (animated gif) Junggon Kim (PNM comments)
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Christopher Forseth (animated gif) Daniel Gibson (16-bit TGA)
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socks-the-fox (16-bit PNG)
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Jeremy Sawicki (handle all ImageNet JPGs)
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Optimizations & bugfixes Mikhail Morozov (1-bit BMP)
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Fabian "ryg" Giesen Anael Seghezzi (is-16-bit query)
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Arseny Kapoulkine
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John-Mark Allen
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Carmelo J Fdez-Aguera
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Bug & warning fixes
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Marc LeBlanc David Woo Guillaume George Martins Mozeiko
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Christpher Lloyd Jerry Jansson Joseph Thomson Blazej Dariusz Roszkowski
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Phil Jordan Dave Moore Roy Eltham
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Hayaki Saito Nathan Reed Won Chun
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Luke Graham Johan Duparc Nick Verigakis the Horde3D community
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Thomas Ruf Ronny Chevalier github:rlyeh
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Janez Zemva John Bartholomew Michal Cichon github:romigrou
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Jonathan Blow Ken Hamada Tero Hanninen github:svdijk
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Laurent Gomila Cort Stratton github:snagar
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Aruelien Pocheville Sergio Gonzalez Thibault Reuille github:Zelex
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Cass Everitt Ryamond Barbiero github:grim210
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Paul Du Bois Engin Manap Aldo Culquicondor github:sammyhw
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Philipp Wiesemann Dale Weiler Oriol Ferrer Mesia github:phprus
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Josh Tobin Matthew Gregan github:poppolopoppo
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Julian Raschke Gregory Mullen Christian Floisand github:darealshinji
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Baldur Karlsson Kevin Schmidt JR Smith github:Michaelangel007
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Brad Weinberger Matvey Cherevko [reserved]
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Luca Sas Alexander Veselov Zack Middleton [reserved]
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Ryan C. Gordon [reserved] [reserved]
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DO NOT ADD YOUR NAME HERE
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To add your name to the credits, pick a random blank space in the middle and fill it.
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80% of merge conflicts on stb PRs are due to people adding their name at the end
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of the credits.
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*/
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#ifndef STBI_INCLUDE_STB_IMAGE_H
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#define STBI_INCLUDE_STB_IMAGE_H
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// DOCUMENTATION
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//
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// Limitations:
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// - no 12-bit-per-channel JPEG
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// - no JPEGs with arithmetic coding
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// - GIF always returns *comp=4
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//
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// Basic usage (see HDR discussion below for HDR usage):
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// int x,y,n;
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// unsigned char *data = stbi_load(filename, &x, &y, &n, 0);
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// // ... process data if not NULL ...
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// // ... x = width, y = height, n = # 8-bit components per pixel ...
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// // ... replace '0' with '1'..'4' to force that many components per pixel
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// // ... but 'n' will always be the number that it would have been if you said 0
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// stbi_image_free(data)
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//
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// Standard parameters:
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// int *x -- outputs image width in pixels
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// int *y -- outputs image height in pixels
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// int *channels_in_file -- outputs # of image components in image file
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// int desired_channels -- if non-zero, # of image components requested in result
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//
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// The return value from an image loader is an 'unsigned char *' which points
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// to the pixel data, or NULL on an allocation failure or if the image is
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// corrupt or invalid. The pixel data consists of *y scanlines of *x pixels,
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// with each pixel consisting of N interleaved 8-bit components; the first
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// pixel pointed to is top-left-most in the image. There is no padding between
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// image scanlines or between pixels, regardless of format. The number of
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// components N is 'desired_channels' if desired_channels is non-zero, or
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// *channels_in_file otherwise. If desired_channels is non-zero,
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// *channels_in_file has the number of components that _would_ have been
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// output otherwise. E.g. if you set desired_channels to 4, you will always
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// get RGBA output, but you can check *channels_in_file to see if it's trivially
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// opaque because e.g. there were only 3 channels in the source image.
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//
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// An output image with N components has the following components interleaved
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// in this order in each pixel:
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//
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// N=#comp components
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// 1 grey
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// 2 grey, alpha
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// 3 red, green, blue
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// 4 red, green, blue, alpha
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//
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// If image loading fails for any reason, the return value will be NULL,
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// and *x, *y, *channels_in_file will be unchanged. The function
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// stbi_failure_reason() can be queried for an extremely brief, end-user
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// unfriendly explanation of why the load failed. Define STBI_NO_FAILURE_STRINGS
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// to avoid compiling these strings at all, and STBI_FAILURE_USERMSG to get slightly
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// more user-friendly ones.
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//
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// Paletted PNG, BMP, GIF, and PIC images are automatically depalettized.
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//
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// ===========================================================================
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//
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// UNICODE:
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//
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// If compiling for Windows and you wish to use Unicode filenames, compile
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// with
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// #define STBI_WINDOWS_UTF8
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// and pass utf8-encoded filenames. Call stbi_convert_wchar_to_utf8 to convert
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// Windows wchar_t filenames to utf8.
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//
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// ===========================================================================
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//
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// Philosophy
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//
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// stb libraries are designed with the following priorities:
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//
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// 1. easy to use
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// 2. easy to maintain
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// 3. good performance
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//
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// Sometimes I let "good performance" creep up in priority over "easy to maintain",
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// and for best performance I may provide less-easy-to-use APIs that give higher
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// performance, in addition to the easy-to-use ones. Nevertheless, it's important
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// to keep in mind that from the standpoint of you, a client of this library,
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// all you care about is #1 and #3, and stb libraries DO NOT emphasize #3 above all.
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//
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// Some secondary priorities arise directly from the first two, some of which
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// provide more explicit reasons why performance can't be emphasized.
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//
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// - Portable ("ease of use")
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// - Small source code footprint ("easy to maintain")
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// - No dependencies ("ease of use")
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//
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// ===========================================================================
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//
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// I/O callbacks
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//
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// I/O callbacks allow you to read from arbitrary sources, like packaged
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// files or some other source. Data read from callbacks are processed
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// through a small internal buffer (currently 128 bytes) to try to reduce
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// overhead.
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//
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// The three functions you must define are "read" (reads some bytes of data),
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// "skip" (skips some bytes of data), "eof" (reports if the stream is at the end).
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//
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// ===========================================================================
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//
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// SIMD support
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//
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// The JPEG decoder will try to automatically use SIMD kernels on x86 when
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// supported by the compiler. For ARM Neon support, you must explicitly
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// request it.
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//
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// (The old do-it-yourself SIMD API is no longer supported in the current
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// code.)
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//
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// On x86, SSE2 will automatically be used when available based on a run-time
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// test; if not, the generic C versions are used as a fall-back. On ARM targets,
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// the typical path is to have separate builds for NEON and non-NEON devices
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// (at least this is true for iOS and Android). Therefore, the NEON support is
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// toggled by a build flag: define STBI_NEON to get NEON loops.
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//
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// If for some reason you do not want to use any of SIMD code, or if
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// you have issues compiling it, you can disable it entirely by
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// defining STBI_NO_SIMD.
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//
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// ===========================================================================
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//
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// HDR image support (disable by defining STBI_NO_HDR)
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//
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// stb_image supports loading HDR images in general, and currently the Radiance
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// .HDR file format specifically. You can still load any file through the existing
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// interface; if you attempt to load an HDR file, it will be automatically remapped
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// to LDR, assuming gamma 2.2 and an arbitrary scale factor defaulting to 1;
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// both of these constants can be reconfigured through this interface:
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//
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// stbi_hdr_to_ldr_gamma(2.2f);
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// stbi_hdr_to_ldr_scale(1.0f);
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//
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// (note, do not use _inverse_ constants; stbi_image will invert them
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// appropriately).
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//
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// Additionally, there is a new, parallel interface for loading files as
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// (linear) floats to preserve the full dynamic range:
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//
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// float *data = stbi_loadf(filename, &x, &y, &n, 0);
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//
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// If you load LDR images through this interface, those images will
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// be promoted to floating point values, run through the inverse of
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// constants corresponding to the above:
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//
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// stbi_ldr_to_hdr_scale(1.0f);
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// stbi_ldr_to_hdr_gamma(2.2f);
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//
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// Finally, given a filename (or an open file or memory block--see header
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// file for details) containing image data, you can query for the "most
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// appropriate" interface to use (that is, whether the image is HDR or
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// not), using:
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//
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// stbi_is_hdr(char *filename);
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//
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// ===========================================================================
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//
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// iPhone PNG support:
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//
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// By default we convert iphone-formatted PNGs back to RGB, even though
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// they are internally encoded differently. You can disable this conversion
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// by calling stbi_convert_iphone_png_to_rgb(0), in which case
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// you will always just get the native iphone "format" through (which
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// is BGR stored in RGB).
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//
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// Call stbi_set_unpremultiply_on_load(1) as well to force a divide per
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// pixel to remove any premultiplied alpha *only* if the image file explicitly
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// says there's premultiplied data (currently only happens in iPhone images,
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// and only if iPhone convert-to-rgb processing is on).
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//
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// ===========================================================================
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//
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// ADDITIONAL CONFIGURATION
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//
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// - You can suppress implementation of any of the decoders to reduce
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// your code footprint by #defining one or more of the following
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// symbols before creating the implementation.
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//
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// STBI_NO_JPEG
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// STBI_NO_PNG
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// STBI_NO_BMP
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// STBI_NO_PSD
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// STBI_NO_TGA
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// STBI_NO_GIF
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// STBI_NO_HDR
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// STBI_NO_PIC
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// STBI_NO_PNM (.ppm and .pgm)
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//
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// - You can request *only* certain decoders and suppress all other ones
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// (this will be more forward-compatible, as addition of new decoders
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// doesn't require you to disable them explicitly):
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//
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// STBI_ONLY_JPEG
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// STBI_ONLY_PNG
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// STBI_ONLY_BMP
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// STBI_ONLY_PSD
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// STBI_ONLY_TGA
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// STBI_ONLY_GIF
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// STBI_ONLY_HDR
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// STBI_ONLY_PIC
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// STBI_ONLY_PNM (.ppm and .pgm)
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//
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// - If you use STBI_NO_PNG (or _ONLY_ without PNG), and you still
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// want the zlib decoder to be available, #define STBI_SUPPORT_ZLIB
|
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//
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// - If you define STBI_MAX_DIMENSIONS, stb_image will reject images greater
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// than that size (in either width or height) without further processing.
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|
|
// This is to let programs in the wild set an upper bound to prevent
|
||
|
|
// denial-of-service attacks on untrusted data, as one could generate a
|
||
|
|
// valid image of gigantic dimensions and force stb_image to allocate a
|
||
|
|
// huge block of memory and spend disproportionate time decoding it. By
|
||
|
|
// default this is set to (1 << 24), which is 16777216, but that's still
|
||
|
|
// very big.
|
||
|
|
|
||
|
|
#ifndef STBI_NO_STDIO
|
||
|
|
#include <stdio.h>
|
||
|
|
#endif // STBI_NO_STDIO
|
||
|
|
|
||
|
|
#define STBI_VERSION 1
|
||
|
|
|
||
|
|
enum
|
||
|
|
{
|
||
|
|
STBI_default = 0, // only used for desired_channels
|
||
|
|
|
||
|
|
STBI_grey = 1,
|
||
|
|
STBI_grey_alpha = 2,
|
||
|
|
STBI_rgb = 3,
|
||
|
|
STBI_rgb_alpha = 4
|
||
|
|
};
|
||
|
|
|
||
|
|
#include <stdlib.h>
|
||
|
|
typedef unsigned char stbi_uc;
|
||
|
|
typedef unsigned short stbi_us;
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef STBIDEF
|
||
|
|
#ifdef STB_IMAGE_STATIC
|
||
|
|
#define STBIDEF static
|
||
|
|
#else
|
||
|
|
#define STBIDEF extern
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// PRIMARY API - works on images of any type
|
||
|
|
//
|
||
|
|
|
||
|
|
//
|
||
|
|
// load image by filename, open file, or memory buffer
|
||
|
|
//
|
||
|
|
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
int (*read) (void* user, char* data, int size); // fill 'data' with 'size' bytes. return number of bytes actually read
|
||
|
|
void (*skip) (void* user, int n); // skip the next 'n' bytes, or 'unget' the last -n bytes if negative
|
||
|
|
int (*eof) (void* user); // returns nonzero if we are at end of file/data
|
||
|
|
} stbi_io_callbacks;
|
||
|
|
|
||
|
|
////////////////////////////////////
|
||
|
|
//
|
||
|
|
// 8-bits-per-channel interface
|
||
|
|
//
|
||
|
|
|
||
|
|
STBIDEF stbi_uc* stbi_load_from_memory(stbi_uc const* buffer, int len, int* x, int* y, int* channels_in_file, int desired_channels);
|
||
|
|
STBIDEF stbi_uc* stbi_load_from_callbacks(stbi_io_callbacks const* clbk, void* user, int* x, int* y, int* channels_in_file, int desired_channels);
|
||
|
|
|
||
|
|
#ifndef STBI_NO_STDIO
|
||
|
|
STBIDEF stbi_uc* stbi_load(char const* filename, int* x, int* y, int* channels_in_file, int desired_channels);
|
||
|
|
STBIDEF stbi_uc* stbi_load_from_file(FILE* f, int* x, int* y, int* channels_in_file, int desired_channels);
|
||
|
|
// for stbi_load_from_file, file pointer is left pointing immediately after image
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef STBI_NO_GIF
|
||
|
|
STBIDEF stbi_uc* stbi_load_gif_from_memory(stbi_uc const* buffer, int len, int** delays, int* x, int* y, int* z, int* comp, int req_comp);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef STBI_WINDOWS_UTF8
|
||
|
|
STBIDEF int stbi_convert_wchar_to_utf8(char* buffer, size_t bufferlen, const wchar_t* input);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
////////////////////////////////////
|
||
|
|
//
|
||
|
|
// 16-bits-per-channel interface
|
||
|
|
//
|
||
|
|
|
||
|
|
STBIDEF stbi_us* stbi_load_16_from_memory(stbi_uc const* buffer, int len, int* x, int* y, int* channels_in_file, int desired_channels);
|
||
|
|
STBIDEF stbi_us* stbi_load_16_from_callbacks(stbi_io_callbacks const* clbk, void* user, int* x, int* y, int* channels_in_file, int desired_channels);
|
||
|
|
|
||
|
|
#ifndef STBI_NO_STDIO
|
||
|
|
STBIDEF stbi_us* stbi_load_16(char const* filename, int* x, int* y, int* channels_in_file, int desired_channels);
|
||
|
|
STBIDEF stbi_us* stbi_load_from_file_16(FILE* f, int* x, int* y, int* channels_in_file, int desired_channels);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
////////////////////////////////////
|
||
|
|
//
|
||
|
|
// float-per-channel interface
|
||
|
|
//
|
||
|
|
#ifndef STBI_NO_LINEAR
|
||
|
|
STBIDEF float* stbi_loadf_from_memory(stbi_uc const* buffer, int len, int* x, int* y, int* channels_in_file, int desired_channels);
|
||
|
|
STBIDEF float* stbi_loadf_from_callbacks(stbi_io_callbacks const* clbk, void* user, int* x, int* y, int* channels_in_file, int desired_channels);
|
||
|
|
|
||
|
|
#ifndef STBI_NO_STDIO
|
||
|
|
STBIDEF float* stbi_loadf(char const* filename, int* x, int* y, int* channels_in_file, int desired_channels);
|
||
|
|
STBIDEF float* stbi_loadf_from_file(FILE* f, int* x, int* y, int* channels_in_file, int desired_channels);
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef STBI_NO_HDR
|
||
|
|
STBIDEF void stbi_hdr_to_ldr_gamma(float gamma);
|
||
|
|
STBIDEF void stbi_hdr_to_ldr_scale(float scale);
|
||
|
|
#endif // STBI_NO_HDR
|
||
|
|
|
||
|
|
#ifndef STBI_NO_LINEAR
|
||
|
|
STBIDEF void stbi_ldr_to_hdr_gamma(float gamma);
|
||
|
|
STBIDEF void stbi_ldr_to_hdr_scale(float scale);
|
||
|
|
#endif // STBI_NO_LINEAR
|
||
|
|
|
||
|
|
// stbi_is_hdr is always defined, but always returns false if STBI_NO_HDR
|
||
|
|
STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const* clbk, void* user);
|
||
|
|
STBIDEF int stbi_is_hdr_from_memory(stbi_uc const* buffer, int len);
|
||
|
|
#ifndef STBI_NO_STDIO
|
||
|
|
STBIDEF int stbi_is_hdr(char const* filename);
|
||
|
|
STBIDEF int stbi_is_hdr_from_file(FILE* f);
|
||
|
|
#endif // STBI_NO_STDIO
|
||
|
|
|
||
|
|
|
||
|
|
// get a VERY brief reason for failure
|
||
|
|
// on most compilers (and ALL modern mainstream compilers) this is threadsafe
|
||
|
|
STBIDEF const char* stbi_failure_reason(void);
|
||
|
|
|
||
|
|
// free the loaded image -- this is just free()
|
||
|
|
STBIDEF void stbi_image_free(void* retval_from_stbi_load);
|
||
|
|
|
||
|
|
// get image dimensions & components without fully decoding
|
||
|
|
STBIDEF int stbi_info_from_memory(stbi_uc const* buffer, int len, int* x, int* y, int* comp);
|
||
|
|
STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const* clbk, void* user, int* x, int* y, int* comp);
|
||
|
|
STBIDEF int stbi_is_16_bit_from_memory(stbi_uc const* buffer, int len);
|
||
|
|
STBIDEF int stbi_is_16_bit_from_callbacks(stbi_io_callbacks const* clbk, void* user);
|
||
|
|
|
||
|
|
#ifndef STBI_NO_STDIO
|
||
|
|
STBIDEF int stbi_info(char const* filename, int* x, int* y, int* comp);
|
||
|
|
STBIDEF int stbi_info_from_file(FILE* f, int* x, int* y, int* comp);
|
||
|
|
STBIDEF int stbi_is_16_bit(char const* filename);
|
||
|
|
STBIDEF int stbi_is_16_bit_from_file(FILE* f);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
// for image formats that explicitly notate that they have premultiplied alpha,
|
||
|
|
// we just return the colors as stored in the file. set this flag to force
|
||
|
|
// unpremultiplication. results are undefined if the unpremultiply overflow.
|
||
|
|
STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply);
|
||
|
|
|
||
|
|
// indicate whether we should process iphone images back to canonical format,
|
||
|
|
// or just pass them through "as-is"
|
||
|
|
STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert);
|
||
|
|
|
||
|
|
// flip the image vertically, so the first pixel in the output array is the bottom left
|
||
|
|
STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip);
|
||
|
|
|
||
|
|
// as above, but only applies to images loaded on the thread that calls the function
|
||
|
|
// this function is only available if your compiler supports thread-local variables;
|
||
|
|
// calling it will fail to link if your compiler doesn't
|
||
|
|
STBIDEF void stbi_set_flip_vertically_on_load_thread(int flag_true_if_should_flip);
|
||
|
|
|
||
|
|
// ZLIB client - used by PNG, available for other purposes
|
||
|
|
|
||
|
|
STBIDEF char* stbi_zlib_decode_malloc_guesssize(const char* buffer, int len, int initial_size, int* outlen);
|
||
|
|
STBIDEF char* stbi_zlib_decode_malloc_guesssize_headerflag(const char* buffer, int len, int initial_size, int* outlen, int parse_header);
|
||
|
|
STBIDEF char* stbi_zlib_decode_malloc(const char* buffer, int len, int* outlen);
|
||
|
|
STBIDEF int stbi_zlib_decode_buffer(char* obuffer, int olen, const char* ibuffer, int ilen);
|
||
|
|
|
||
|
|
STBIDEF char* stbi_zlib_decode_noheader_malloc(const char* buffer, int len, int* outlen);
|
||
|
|
STBIDEF int stbi_zlib_decode_noheader_buffer(char* obuffer, int olen, const char* ibuffer, int ilen);
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//
|
||
|
|
//
|
||
|
|
//// end header file /////////////////////////////////////////////////////
|
||
|
|
#endif // STBI_INCLUDE_STB_IMAGE_H
|
||
|
|
|
||
|
|
/*
|
||
|
|
revision history:
|
||
|
|
2.20 (2019-02-07) support utf8 filenames in Windows; fix warnings and platform ifdefs
|
||
|
|
2.19 (2018-02-11) fix warning
|
||
|
|
2.18 (2018-01-30) fix warnings
|
||
|
|
2.17 (2018-01-29) change sbti__shiftsigned to avoid clang -O2 bug
|
||
|
|
1-bit BMP
|
||
|
|
*_is_16_bit api
|
||
|
|
avoid warnings
|
||
|
|
2.16 (2017-07-23) all functions have 16-bit variants;
|
||
|
|
STBI_NO_STDIO works again;
|
||
|
|
compilation fixes;
|
||
|
|
fix rounding in unpremultiply;
|
||
|
|
optimize vertical flip;
|
||
|
|
disable raw_len validation;
|
||
|
|
documentation fixes
|
||
|
|
2.15 (2017-03-18) fix png-1,2,4 bug; now all Imagenet JPGs decode;
|
||
|
|
warning fixes; disable run-time SSE detection on gcc;
|
||
|
|
uniform handling of optional "return" values;
|
||
|
|
thread-safe initialization of zlib tables
|
||
|
|
2.14 (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs
|
||
|
|
2.13 (2016-11-29) add 16-bit API, only supported for PNG right now
|
||
|
|
2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes
|
||
|
|
2.11 (2016-04-02) allocate large structures on the stack
|
||
|
|
remove white matting for transparent PSD
|
||
|
|
fix reported channel count for PNG & BMP
|
||
|
|
re-enable SSE2 in non-gcc 64-bit
|
||
|
|
support RGB-formatted JPEG
|
||
|
|
read 16-bit PNGs (only as 8-bit)
|
||
|
|
2.10 (2016-01-22) avoid warning introduced in 2.09 by STBI_REALLOC_SIZED
|
||
|
|
2.09 (2016-01-16) allow comments in PNM files
|
||
|
|
16-bit-per-pixel TGA (not bit-per-component)
|
||
|
|
info() for TGA could break due to .hdr handling
|
||
|
|
info() for BMP to shares code instead of sloppy parse
|
||
|
|
can use STBI_REALLOC_SIZED if allocator doesn't support realloc
|
||
|
|
code cleanup
|
||
|
|
2.08 (2015-09-13) fix to 2.07 cleanup, reading RGB PSD as RGBA
|
||
|
|
2.07 (2015-09-13) fix compiler warnings
|
||
|
|
partial animated GIF support
|
||
|
|
limited 16-bpc PSD support
|
||
|
|
#ifdef unused functions
|
||
|
|
bug with < 92 byte PIC,PNM,HDR,TGA
|
||
|
|
2.06 (2015-04-19) fix bug where PSD returns wrong '*comp' value
|
||
|
|
2.05 (2015-04-19) fix bug in progressive JPEG handling, fix warning
|
||
|
|
2.04 (2015-04-15) try to re-enable SIMD on MinGW 64-bit
|
||
|
|
2.03 (2015-04-12) extra corruption checking (mmozeiko)
|
||
|
|
stbi_set_flip_vertically_on_load (nguillemot)
|
||
|
|
fix NEON support; fix mingw support
|
||
|
|
2.02 (2015-01-19) fix incorrect assert, fix warning
|
||
|
|
2.01 (2015-01-17) fix various warnings; suppress SIMD on gcc 32-bit without -msse2
|
||
|
|
2.00b (2014-12-25) fix STBI_MALLOC in progressive JPEG
|
||
|
|
2.00 (2014-12-25) optimize JPG, including x86 SSE2 & NEON SIMD (ryg)
|
||
|
|
progressive JPEG (stb)
|
||
|
|
PGM/PPM support (Ken Miller)
|
||
|
|
STBI_MALLOC,STBI_REALLOC,STBI_FREE
|
||
|
|
GIF bugfix -- seemingly never worked
|
||
|
|
STBI_NO_*, STBI_ONLY_*
|
||
|
|
1.48 (2014-12-14) fix incorrectly-named assert()
|
||
|
|
1.47 (2014-12-14) 1/2/4-bit PNG support, both direct and paletted (Omar Cornut & stb)
|
||
|
|
optimize PNG (ryg)
|
||
|
|
fix bug in interlaced PNG with user-specified channel count (stb)
|
||
|
|
1.46 (2014-08-26)
|
||
|
|
fix broken tRNS chunk (colorkey-style transparency) in non-paletted PNG
|
||
|
|
1.45 (2014-08-16)
|
||
|
|
fix MSVC-ARM internal compiler error by wrapping malloc
|
||
|
|
1.44 (2014-08-07)
|
||
|
|
various warning fixes from Ronny Chevalier
|
||
|
|
1.43 (2014-07-15)
|
||
|
|
fix MSVC-only compiler problem in code changed in 1.42
|
||
|
|
1.42 (2014-07-09)
|
||
|
|
don't define _CRT_SECURE_NO_WARNINGS (affects user code)
|
||
|
|
fixes to stbi__cleanup_jpeg path
|
||
|
|
added STBI_ASSERT to avoid requiring assert.h
|
||
|
|
1.41 (2014-06-25)
|
||
|
|
fix search&replace from 1.36 that messed up comments/error messages
|
||
|
|
1.40 (2014-06-22)
|
||
|
|
fix gcc struct-initialization warning
|
||
|
|
1.39 (2014-06-15)
|
||
|
|
fix to TGA optimization when req_comp != number of components in TGA;
|
||
|
|
fix to GIF loading because BMP wasn't rewinding (whoops, no GIFs in my test suite)
|
||
|
|
add support for BMP version 5 (more ignored fields)
|
||
|
|
1.38 (2014-06-06)
|
||
|
|
suppress MSVC warnings on integer casts truncating values
|
||
|
|
fix accidental rename of 'skip' field of I/O
|
||
|
|
1.37 (2014-06-04)
|
||
|
|
remove duplicate typedef
|
||
|
|
1.36 (2014-06-03)
|
||
|
|
convert to header file single-file library
|
||
|
|
if de-iphone isn't set, load iphone images color-swapped instead of returning NULL
|
||
|
|
1.35 (2014-05-27)
|
||
|
|
various warnings
|
||
|
|
fix broken STBI_SIMD path
|
||
|
|
fix bug where stbi_load_from_file no longer left file pointer in correct place
|
||
|
|
fix broken non-easy path for 32-bit BMP (possibly never used)
|
||
|
|
TGA optimization by Arseny Kapoulkine
|
||
|
|
1.34 (unknown)
|
||
|
|
use STBI_NOTUSED in stbi__resample_row_generic(), fix one more leak in tga failure case
|
||
|
|
1.33 (2011-07-14)
|
||
|
|
make stbi_is_hdr work in STBI_NO_HDR (as specified), minor compiler-friendly improvements
|
||
|
|
1.32 (2011-07-13)
|
||
|
|
support for "info" function for all supported filetypes (SpartanJ)
|
||
|
|
1.31 (2011-06-20)
|
||
|
|
a few more leak fixes, bug in PNG handling (SpartanJ)
|
||
|
|
1.30 (2011-06-11)
|
||
|
|
added ability to load files via callbacks to accomidate custom input streams (Ben Wenger)
|
||
|
|
removed deprecated format-specific test/load functions
|
||
|
|
removed support for installable file formats (stbi_loader) -- would have been broken for IO callbacks anyway
|
||
|
|
error cases in bmp and tga give messages and don't leak (Raymond Barbiero, grisha)
|
||
|
|
fix inefficiency in decoding 32-bit BMP (David Woo)
|
||
|
|
1.29 (2010-08-16)
|
||
|
|
various warning fixes from Aurelien Pocheville
|
||
|
|
1.28 (2010-08-01)
|
||
|
|
fix bug in GIF palette transparency (SpartanJ)
|
||
|
|
1.27 (2010-08-01)
|
||
|
|
cast-to-stbi_uc to fix warnings
|
||
|
|
1.26 (2010-07-24)
|
||
|
|
fix bug in file buffering for PNG reported by SpartanJ
|
||
|
|
1.25 (2010-07-17)
|
||
|
|
refix trans_data warning (Won Chun)
|
||
|
|
1.24 (2010-07-12)
|
||
|
|
perf improvements reading from files on platforms with lock-heavy fgetc()
|
||
|
|
minor perf improvements for jpeg
|
||
|
|
deprecated type-specific functions so we'll get feedback if they're needed
|
||
|
|
attempt to fix trans_data warning (Won Chun)
|
||
|
|
1.23 fixed bug in iPhone support
|
||
|
|
1.22 (2010-07-10)
|
||
|
|
removed image *writing* support
|
||
|
|
stbi_info support from Jetro Lauha
|
||
|
|
GIF support from Jean-Marc Lienher
|
||
|
|
iPhone PNG-extensions from James Brown
|
||
|
|
warning-fixes from Nicolas Schulz and Janez Zemva (i.stbi__err. Janez (U+017D)emva)
|
||
|
|
1.21 fix use of 'stbi_uc' in header (reported by jon blow)
|
||
|
|
1.20 added support for Softimage PIC, by Tom Seddon
|
||
|
|
1.19 bug in interlaced PNG corruption check (found by ryg)
|
||
|
|
1.18 (2008-08-02)
|
||
|
|
fix a threading bug (local mutable static)
|
||
|
|
1.17 support interlaced PNG
|
||
|
|
1.16 major bugfix - stbi__convert_format converted one too many pixels
|
||
|
|
1.15 initialize some fields for thread safety
|
||
|
|
1.14 fix threadsafe conversion bug
|
||
|
|
header-file-only version (#define STBI_HEADER_FILE_ONLY before including)
|
||
|
|
1.13 threadsafe
|
||
|
|
1.12 const qualifiers in the API
|
||
|
|
1.11 Support installable IDCT, colorspace conversion routines
|
||
|
|
1.10 Fixes for 64-bit (don't use "unsigned long")
|
||
|
|
optimized upsampling by Fabian "ryg" Giesen
|
||
|
|
1.09 Fix format-conversion for PSD code (bad global variables!)
|
||
|
|
1.08 Thatcher Ulrich's PSD code integrated by Nicolas Schulz
|
||
|
|
1.07 attempt to fix C++ warning/errors again
|
||
|
|
1.06 attempt to fix C++ warning/errors again
|
||
|
|
1.05 fix TGA loading to return correct *comp and use good luminance calc
|
||
|
|
1.04 default float alpha is 1, not 255; use 'void *' for stbi_image_free
|
||
|
|
1.03 bugfixes to STBI_NO_STDIO, STBI_NO_HDR
|
||
|
|
1.02 support for (subset of) HDR files, float interface for preferred access to them
|
||
|
|
1.01 fix bug: possible bug in handling right-side up bmps... not sure
|
||
|
|
fix bug: the stbi__bmp_load() and stbi__tga_load() functions didn't work at all
|
||
|
|
1.00 interface to zlib that skips zlib header
|
||
|
|
0.99 correct handling of alpha in palette
|
||
|
|
0.98 TGA loader by lonesock; dynamically add loaders (untested)
|
||
|
|
0.97 jpeg errors on too large a file; also catch another malloc failure
|
||
|
|
0.96 fix detection of invalid v value - particleman@mollyrocket forum
|
||
|
|
0.95 during header scan, seek to markers in case of padding
|
||
|
|
0.94 STBI_NO_STDIO to disable stdio usage; rename all #defines the same
|
||
|
|
0.93 handle jpegtran output; verbose errors
|
||
|
|
0.92 read 4,8,16,24,32-bit BMP files of several formats
|
||
|
|
0.91 output 24-bit Windows 3.0 BMP files
|
||
|
|
0.90 fix a few more warnings; bump version number to approach 1.0
|
||
|
|
0.61 bugfixes due to Marc LeBlanc, Christopher Lloyd
|
||
|
|
0.60 fix compiling as c++
|
||
|
|
0.59 fix warnings: merge Dave Moore's -Wall fixes
|
||
|
|
0.58 fix bug: zlib uncompressed mode len/nlen was wrong endian
|
||
|
|
0.57 fix bug: jpg last huffman symbol before marker was >9 bits but less than 16 available
|
||
|
|
0.56 fix bug: zlib uncompressed mode len vs. nlen
|
||
|
|
0.55 fix bug: restart_interval not initialized to 0
|
||
|
|
0.54 allow NULL for 'int *comp'
|
||
|
|
0.53 fix bug in png 3->4; speedup png decoding
|
||
|
|
0.52 png handles req_comp=3,4 directly; minor cleanup; jpeg comments
|
||
|
|
0.51 obey req_comp requests, 1-component jpegs return as 1-component,
|
||
|
|
on 'test' only check type, not whether we support this variant
|
||
|
|
0.50 (2006-11-19)
|
||
|
|
first released version
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
------------------------------------------------------------------------------
|
||
|
|
This software is available under 2 licenses -- choose whichever you prefer.
|
||
|
|
------------------------------------------------------------------------------
|
||
|
|
ALTERNATIVE A - MIT License
|
||
|
|
Copyright (c) 2017 Sean Barrett
|
||
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||
|
|
this software and associated documentation files (the "Software"), to deal in
|
||
|
|
the Software without restriction, including without limitation the rights to
|
||
|
|
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
||
|
|
of the Software, and to permit persons to whom the Software is furnished to do
|
||
|
|
so, subject to the following conditions:
|
||
|
|
The above copyright notice and this permission notice shall be included in all
|
||
|
|
copies or substantial portions of the Software.
|
||
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||
|
|
SOFTWARE.
|
||
|
|
------------------------------------------------------------------------------
|
||
|
|
ALTERNATIVE B - Public Domain (www.unlicense.org)
|
||
|
|
This is free and unencumbered software released into the public domain.
|
||
|
|
Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
|
||
|
|
software, either in source code form or as a compiled binary, for any purpose,
|
||
|
|
commercial or non-commercial, and by any means.
|
||
|
|
In jurisdictions that recognize copyright laws, the author or authors of this
|
||
|
|
software dedicate any and all copyright interest in the software to the public
|
||
|
|
domain. We make this dedication for the benefit of the public at large and to
|
||
|
|
the detriment of our heirs and successors. We intend this dedication to be an
|
||
|
|
overt act of relinquishment in perpetuity of all present and future rights to
|
||
|
|
this software under copyright law.
|
||
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
|
AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||
|
|
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||
|
|
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||
|
|
------------------------------------------------------------------------------
|
||
|
|
*/
|