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131 Commits

Author SHA1 Message Date
Sean Barrett
9de22e5a70 Merge branch 'stbiw-png-compr' of https://github.com/DanielGibson/stb 2018-01-29 02:53:25 -08:00
Sean Barrett
b056850ea9 stb_image_write can flip images vertically 2018-01-29 02:52:49 -08:00
John Tullos
841862a622 Fixed grammar, spelling issues in comments 
issue #533
 2018-01-01 18:59:06 -06:00
John Tullos
32a7d5ab68 Added STBI_MSC_SECURE_CRT to support newer MSVC compilers as optional 
For issue #533
 2018-01-01 18:54:26 -06:00
John Tullos
5e844ffe70 Using secure versions of CRT calls to avoid Microsoft Visual C/C++ compiler errors/warnings. 2018-01-01 18:08:30 -06:00
Aarni Koskela
2c7b00ac21 Add force_filter and compression_level parameters to (new) stbi_write_png_to_mem_ex 
* `force_filter` being < 0 means the original behavior (i.e. figure out
  the best-performing filter per scanline); any other values 0 <= x <= 4 correspond
  to PNG filters (0 = none, 1 = sub, 2 = up, 3 = average, 4 = Paeth).
* `compression_level` being < 0 equals `compression_level` 8 (the previous value).
  The higher this is, the better the compression should be (though it will use
  more memory).

These new parameters are not (yet) exposed for the higher-level API functions.
 2017-08-07 14:52:53 +03:00
Benji Smith
923c9c3deb Correct function signature in stbi_write_jpg usage documentation. 2017-07-31 22:22:56 -07:00
Sean Barrett
961923b5a3 fix documentation 2017-07-24 03:32:20 -07:00
Sean Barrett
555efbedfc Update version numbers 2017-07-23 14:09:39 -07:00
Fabian Giesen
931662ae6e stb_image_write: Warning fix. 2017-07-22 16:04:07 -07:00
Daniel Gibson
be21113512 stb_image_write.h: Allow setting custom zlib compress function for PNG 
The builtin stbi_zlib_compress does not compress as well as zlib or
miniz (which is not too surprising as it's <200 LOC), thus PNGs created
by stb_image_write are about 20-50% bigger than PNGs compressed with
libpng.
This change lets the user supply a custom deflate/zlib-style compress
function, which improves compression a lot. This was requested in #113.

Example for zlib:

#include <zlib.h>
unsigned char* compress_for_stbiw(unsigned char *data, int data_len,
                                  int *out_len, int quality)
{
  uLongf bufSize = compressBound(data_len);
  // note that buf will be free'd by stb_image_write.h
  // with STBIW_FREE() (plain free() by default)
  unsigned char* buf = malloc(bufSize);
  if(buf == NULL)  return NULL;
  if(compress2(buf, &bufSize, data, data_len, quality) != Z_OK)
  {
    free(buf);
    return NULL;
  }
  *out_len = bufSize;

  return buf;
}
#define STBIW_ZLIB_COMPRESS compress_for_stbiw
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "stb_image_write.h"
// ...
 2017-07-04 19:34:31 +02:00
Daniel Gibson
e6bbecd3a9 stb_image_write.h: Set PNG compress lvl via stbi_write_png_level 
This allows the user to change the deflate/zlib compress level used for
PNG compression by changing a global variable.
 2017-07-04 18:07:33 +02:00
Daniel Gibson
f0baa0c287 stb_image_write.h: Fix compilation in C++11 mode 
clang says:
error: non-constant-expression cannot be narrowed from type 'int'
      to 'unsigned char' in initializer list [-Wc++11-narrowing]

so I explicitly cast affected stuff to unsigned char.
 2017-07-04 16:55:50 +02:00
Daniel Gibson
e5144a3996 stb_image_write.h: Consistently use STBIWDEF for stbi_write_* 
Some functions were missing that in the definition, others weren't,
all had it in the declarations.

Added mention of JPG and HDR formats at the top of the file
 2017-03-11 18:59:44 +01:00
Daniel Gibson
721c788fdb stb_image_write: JPEG writer based on jo_jpeg.cpp 
jo_jpeg.cpp is a Public Domain JPEG writer written by Jon Olick in 2012
http://www.jonolick.com/code.html

My changes to jo_jpeg:
* port to plain C89 (+ // comments, as supported by MSVC6)
* support for 2 comp input (Greyscale+Alpha, Alpha is ignored)
* use stbi__write_context abstraction instead of stdio for writing
* adjust names to stbiw-style
 2017-03-11 18:59:44 +01:00
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
51a5368dee Merge branch 'master' of https://github.com/pboettch/stb into working 2017-03-03 08:02:39 -08:00
Sean Barrett
96620a3a54 update version numbers 2017-01-16 00:51:24 -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
PopPoLoPoPpo
19d03764b5 Fix #ifndef STBI_WRITE_NO_STDIO scioe for stbi_write_hdr() 
stbi_write_hdr_to_func() should still be available even without STBI_WRITE_NO_STDIO,
just like other formats.
 2017-01-03 02:45:16 +01:00
Patrick Boettcher
734576e6be image-write: fix monochrome bitmap writing from 8-bit-buffers 
Now writing out monochrome bitmaps from 8-bit arrays works
as it does when using PNG.

Bitmaps need 3 bytes per pixel.
 2016-06-15 10:36:39 +02:00
Sean Barrett
6e4154737c update version numbers, documentation, and contributors 2016-04-02 04:51:26 -07:00
Sean Barrett
097a70ae38 Merge branch 'master' of https://github.com/tulrich/stb 2016-04-02 02:56:39 -07:00
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
Sean Barrett
f1d2002a1d update contributor list 2016-01-16 10:16:23 -08:00
Sean Barrett
58484eb73d Merge branch 'implicit_cast_fix' of https://github.com/filipwasil/stb into working 2016-01-16 10:11:54 -08:00
Sean Barrett
9f081b62a4 Merge branch 'stbiw_documentation_typo' of https://github.com/karjonas/stb into working 2016-01-16 10:11:00 -08:00
Sean Barrett
099cd5a279 Merge branch 'msvc_runtime_cast_fixes' of https://github.com/karjonas/stb into working 2016-01-16 10:10:07 -08:00
Sean Barrett
8521c38956 tweak previous crc commit 2016-01-16 10:09:35 -08:00
Sean Barrett
89aaa77b5f Merge branch 'image_write_parallel' of https://github.com/karjonas/stb into working 2016-01-16 10:04:45 -08:00
Sean Barrett
20aca08f86 Merge branch 'master' of https://github.com/zerhacken/stb into working 2016-01-16 10:02:56 -08:00
Sean Barrett
b9216ddb36 Merge branch 'master' of https://github.com/serge-rgb/stb into working 
Conflicts:
	stb_image_write.h
 2016-01-16 10:02:30 -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
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
Filip Wasil
8cea0090b2 Removie implicit cast to float 
When compiling with more restrictive compiler options
such casting from double to float will cause a warning.

Ex. GCC -Wdouble-promotion

Signed-off-by: Filip Wasil <filip.wasil@gmail.com>
 2015-10-29 16:09:21 +01:00
Jonas Karlsson
b95858a2f7 Add bitmask to unsigned char casts to fix MSVC runtime checks 2015-10-20 23:22:27 +02:00
Jonas Karlsson
22dd50f256 Fix documentation error 2015-10-20 22:03:50 +02:00
Jonas Karlsson
f1d401845f Fix race condition in static crc_table 
If calling stbi_write_png concurrently the static array crc_table would be shared between threads causing data-races.
 2015-10-17 17:33:00 +02:00
Rasmus Christian Pedersen
007c850b48 nobug: removed unused variable 'k' 2015-09-25 19:46:27 +02:00
Sergio Gonzalez
b372a1f86c Avoid macro redefinition in Win32 2015-09-21 12:18:18 -05:00
Sean Barrett
93b2b82996 get rid of unused return value from write callback 2015-09-14 05:57:42 -07:00
Sean Barrett
b4477803cb fix public function names; 
fix internal names to be namspaced properly;
 2015-09-14 05:48:24 -07:00
Sean Barrett
78fe0bfc24 handle fopen() failing 2015-09-14 05:40:12 -07:00
Sean Barrett
ad63a8d316 Merge branch 'master' of https://github.com/ejulien/stb into working 
Conflicts:
	stb_image_write.h
 2015-09-14 05:38:07 -07:00
Sean Barrett
5bcce36638 rle tweaks, credits 2015-09-13 06:58:45 -07:00
Sean Barrett
40ace6b0ef Merge branch 'master' of https://github.com/fahickman/stb into working 2015-09-13 06:51:14 -07:00
Sean Barrett
a84daa614e a few more stb_image_write fixes 2015-09-13 06:46:43 -07:00
Sean Barrett
2a1716cc8f credits 2015-09-13 06:41:16 -07:00
Sean Barrett
23b21a7c1f Merge branch 'master' of https://github.com/guillaumechereau/stb into working 2015-09-13 06:39:20 -07:00
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
45b27d8a9c Added public domain license text 2015-08-01 14:54:05 -04:00
fahickman
80a0e90d53 TGA RLE flag and regression fix 
Add requested flag for controlling TGA RLE compression and fix a
regression when writing monochrome TGAs.
 2015-07-03 14:27:29 -07:00
fahickman
126ec22867 add missing consts 2015-06-04 14:04:02 -07:00
fahickman
e0e4bd4d86 write TGAs with RLE compression 2015-05-11 21:38:55 -07:00
Guillaume Chereau
d1d5f4ca96 add STB_IMAGE_WRITE_STATIC macro 
This is the same thing than STB_IMAGE_STATIC of stb_image.h.
 2015-04-20 23:18:42 +08:00
Guillaume Chereau
347e7838be fix compilation of stb_image_write.h with gcc -O3 
When compiling with -O3, gcc would complain that 'linear' might not be
initialized if comp is superior to 4.

In fact passing a value > 4 is an error anyway, but gcc does not know
that.  I changed the switch case to support comp > 4.  I don't think it
should affect the performances.
 2015-04-20 22:59:24 +08:00
Sean Barrett
00b1797a23 switch memcpy to memmove for simplicity; 
rename all STBI_ config macros to STBIW_ to avoid conflict with stb_image.h
 2015-04-13 11:55:24 -07:00
Sean Barrett
019236a624 Merge branch 'stb-image-writer-memory' of https://github.com/callidus/stb into work2 2015-04-13 11:48:26 -07:00
Tim Kelsey
8b1d835e16 Adding memory and assert defines to stb_image_write 2015-04-08 15:24:46 +01:00
Jørgen P. Tjernø
80176ae4a1 Remove unused variables in write_hdr_scanline. 
Fixes #90.
 2015-03-24 11:22:20 -07:00
Sean Barrett
22fa9a467a rewrite HDR rle logic 2015-01-18 10:43:42 -08:00
Sean Barrett
80d5c4be48 fix bug introduced when doing hdr cleanup 2015-01-17 09:16:48 -08:00
Sean Barrett
d91cbdf662 Merge branch 'test' 2015-01-17 07:47:52 -08:00
Sean Barrett
edd5e6700d tweak baldurk's hdr implementation 2015-01-17 07:46:22 -08:00
Sean Barrett
6639ef6d5a fix monochrome bmp support 2015-01-17 07:15:50 -08:00
Emmanuel Julien
529d8163b2 Add support for writing through callback functions in stb_image_write.h. 2015-01-13 17:43:14 +01:00
baldurk
fb8eabd6b8 Add .hdr file writing support 2014-09-09 08:33:25 +01:00
Sean Barrett
492e3f3463 update version numbers 2014-08-17 21:12:16 -07:00
Sean Barrett
7e079c670d tweak TGA monochrome support 2014-08-16 13:52:47 -07:00
Jean-Sbastien Guay
ebc2d23d47 realized the 2 colorbytes case is impossible. 
also updated the comment at the top of the file to reflect stbi_write_tga's new capabilities.
 2014-08-09 09:16:57 -04:00
Jean-Sbastien Guay
26a71f67fe comment was wrong way around... code was right. 2014-08-09 01:08:43 -04:00
Jean-Sbastien Guay
b8b364c301 stbi_write_tga can now write 1 and 2 channel (grayscale and grayscale-alpha) images. 2014-08-09 00:34:49 -04:00
Sean Barrett
b96edc012c Merge branch 'headerify' 
Conflicts:
	tests/stretch_test.dsp
 2014-06-03 08:51:40 -07:00
Sean Barrett
ca093eda56 add strict-aliasing warnings; update readme to include stretchy_buffer 2014-06-01 08:04:07 -07:00
Sean Barrett
7add5044e0 bump version number 2014-05-31 06:27:09 -07:00
Sean Barrett
9f251b6da1 rename stb_image_write private functions to use stbiw__ not stbi__ to avoid conflict with stb_image.h 2014-05-31 06:25:31 -07:00
Sean Barrett
fcfcb9bb3f generate README.md in part by parsing libraries so that version numbers are in sync 2014-05-30 14:15:51 -07:00
Sean Barrett
70df4966f0 various warning fixes, STBI_SIMD compile error, incorrect file-pointer state for one API 2014-05-27 12:14:26 -07:00
Sean Barrett
e2caccb811 initial checkin 2014-05-25 10:18:03 -07:00