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29f59c0460 update version number Sean Barrett 2014-08-07 04:44:17 -0700
d26beed67d comments/ version update for platformID = Unicode Sean Barrett 2014-08-07 04:41:02 -0700
0adfac0abe Merge branch 'master' of https://github.com/HouQiming/stb into working Sean Barrett 2014-08-07 04:35:51 -0700
85c39da625 Merge branch 'rc/const' of https://github.com/ronnychevalier/stb into working Sean Barrett 2014-08-07 04:25:12 -0700
2119c17ae9 stb_vorbis: fix unused variables Ronny Chevalier 2014-07-17 14:53:42 +0200
260741ed33 vorbis warnings from ronny chevalier Sean Barrett 2014-08-07 04:20:58 -0700
758c165d2c stb_vorbis: fix unused functions Ronny Chevalier 2014-07-17 14:49:48 +0200
b8b6e7c31a stb_image: fix unused parameter Ronny Chevalier 2014-07-17 14:44:11 +0200
422e29017c stb_vorbis: fix signed/unsigned comparison Ronny Chevalier 2014-07-17 14:43:29 +0200
893ef013b2 stb_image: fix undefined preprocessor definition Ronny Chevalier 2014-07-17 14:43:08 +0200
c28e92e856 stb_vorbis: use const char* when appropriate Ronny Chevalier 2014-08-03 23:43:54 +0200
e05ebdbf1e My guess is people who care about premultiply also care about color space. Jorge Rodriguez 2014-07-31 19:37:42 -0700
d75488b0e8 Do the multiply inline, it should be a tad faster and not corrupt our data. Jorge Rodriguez 2014-07-31 19:00:48 -0700
13acfca829 I had the whole premultiply thing backwards. Jorge Rodriguez 2014-07-31 18:46:00 -0700
21c7c8f5d9 Another stab at the api, offering classes of functions for different common tasks. Jorge Rodriguez 2014-07-31 18:04:57 -0700
8063ea0952 Specify a channel as having premultiplied alpha and use it to un-premultiply all other channels before resampling. Jorge Rodriguez 2014-07-31 17:20:00 -0700
a32fa8b4df This to-do item done. Jorge Rodriguez 2014-07-31 16:36:09 -0700
daf325dc03 Sub pixel source area test cases. No problems. Jorge Rodriguez 2014-07-31 16:31:45 -0700
aae1c7ca41 ZOOM AND ENHANCE! Jorge Rodriguez 2014-07-31 15:16:36 -0700
1b2d104e00 Some error conditions. Jorge Rodriguez 2014-07-31 00:52:03 -0700
35cb95b803 Allow for specifying a sub-region of the source image to use. Downsampling only, currently. Jorge Rodriguez 2014-07-31 00:39:33 -0700
52ac93225a C<99 ports Jorge Rodriguez 2014-07-30 17:33:47 -0700
fdc979e48b Some minor ports for Linux. No idea how it worked at all in Windows with STB_RESIZE_IMPLEMENTATION instead of STB_RESAMPLE_IMPLEMENTATION. Jorge Rodriguez 2014-07-30 17:30:25 -0700
c5de2f3298 Test channels. Jorge Rodriguez 2014-07-30 09:41:41 -0700
985ac75251 When doing a perfect po2 nearest neighbor downsample don't allow -0.5 and 0.5 to both contribute to a texel or you'll get a double tap. Jorge Rodriguez 2014-07-30 09:27:42 -0700
c2449acc3e Tests for edge behavior Jorge Rodriguez 2014-07-30 09:14:38 -0700
59cb71ea18 Fix float conversion. Jorge Rodriguez 2014-07-30 08:47:55 -0700
6625259959 Try to keep integer precision by briefly casting to double while decoding and encoding. Jorge Rodriguez 2014-07-30 01:18:23 -0700
11897fbf96 More fixing shorts. Jorge Rodriguez 2014-07-30 00:34:25 -0700
1fcbe0daaf Fix shorts. Add test cases for shorts. Jorge Rodriguez 2014-07-30 00:16:13 -0700
7ead9a748d Fix. Ring buffers are a height value. Jorge Rodriguez 2014-07-29 23:09:41 -0700
043fa28c11 Same deal with height. Jorge Rodriguez 2014-07-29 23:02:56 -0700
ebe0473d8b Add a test suite to do a bunch of different resizes to find problems. One problem found was an incorrect calculation of texel support how many margin texels needed when downsampling. When downsampling we need to spread out the support of each contributing texel, so to compensate you need more margin texels. Jorge Rodriguez 2014-07-29 22:50:06 -0700
68f93b72d5 Update documentation and add helper functions. Jorge Rodriguez 2014-07-29 20:18:28 -0700
5b40906271 My perf testing code. Jorge Rodriguez 2014-07-29 17:44:45 -0700
d96c97298c This is still faster than the function pointer solution, and neater. Jorge Rodriguez 2014-07-29 16:22:22 -0700
3a3e06029e This is definitely faster than the function pointer solution. Jorge Rodriguez 2014-07-29 12:11:03 -0700
9bd5abb52d Both versions run within the margin of error on my machine so we'll go with the simpler one. Jorge Rodriguez 2014-07-29 11:44:32 -0700
5dff80ed31 Trying some different strategies for optimizing the decoder. The code in #ifdef 1 is slightly faster by my measurements, but a whole lot uglier. Jorge Rodriguez 2014-07-29 11:39:42 -0700
54a3792ab1 Merge 1bb5089d85 into ee8e926317 metiscus 2014-07-29 18:14:57 +0000
1bb5089d85 Changed name of STB_UNUSED macro to STBI_UNUSED to reflect the other macros in the file. Michael A Bosse 2014-07-29 14:13:37 -0400
b9f305c796 Removed a build warning about unused parameter Michael A Bosse 2014-07-29 14:11:06 -0400
05f775e977 Merge branch 'master' of https://github.com/BSVino/stb Jorge Rodriguez 2014-07-29 00:33:54 -0700
1fcf30ada0 Fix a math error. Jorge Rodriguez 2014-07-29 00:33:29 -0700
e2ac4f6505 More resample ideas Jorge Rodriguez 2014-07-27 12:05:17 -0700
ef3a460ec4 Some better looking horners save another multiplication. Jorge Rodriguez 2014-07-27 00:55:47 -0700
7d47582578 Support for 16 and 32 bit integer images, and float images. Jorge Rodriguez 2014-07-27 00:09:22 -0700
6c8cac0a66 Support for sRGB color space. Jorge Rodriguez 2014-07-26 23:44:45 -0700
41dc4c476c In some situations with certain filter kernels with negative values it's possible to generate valid results > 1.0, so saturate it before we write it to make sure it doesn't overflow. Also fix incorrect filter radius while downsampling. Jorge Rodriguez 2014-07-26 22:49:56 -0700
af1ed58f51 Add wrap, fix reflect so it doesn't wrap. Jorge Rodriguez 2014-07-26 19:30:13 -0700
8723567439 Add edge reflect mode. Jorge Rodriguez 2014-07-26 19:11:02 -0700
6cd81d4dd5 Put the polynomials in horner form to save a multiplication. Jorge Rodriguez 2014-07-26 15:36:15 -0700
fb2f8df5cc Add mitchell filter. Jorge Rodriguez 2014-07-26 15:06:31 -0700
69af963c42 Add catmull rom filter. Also, move the debug asserts for values <= 1 to the very end of the process. This will make these bugs a lot harder to find, but because some filter kernels have negative values it's possible for the buffers to have values > 1 up until the point where it's converted back to an int. Jorge Rodriguez 2014-07-26 14:52:28 -0700
12acf87eec When downsampling start the buffer loop at -filter_texel_margin to make sure that all contributors get their taps in at the ring buffer. Jorge Rodriguez 2014-07-26 13:56:23 -0700
155c71fb90 Reorder these loops because I think we get a cache win if we write the entire ring buffer entry at once. Jorge Rodriguez 2014-07-26 13:12:48 -0700
01fb58d6b4 Add a bicubic filter. Jorge Rodriguez 2014-07-26 13:07:04 -0700
a95da9ee1d Unroll the multiply-add loops. At the cost of a function pointer dereference we get a whole lot of conditionals eliminated. Should be a solid win once the debug asserts are gone. Jorge Rodriguez 2014-07-26 12:04:39 -0700
7abd4ccf34 Support for filters with larger support. Initial support for edge behavior. Jorge Rodriguez 2014-07-26 11:51:02 -0700
62ff271c7a I put it in the to do list and now I can close my browser tab. Jorge Rodriguez 2014-07-25 00:08:23 -0700
81c1ddf110 Keeping a list of suggestions so I don't forget them. Jorge Rodriguez 2014-07-25 00:00:40 -0700
27926e78b8 Make consistent tests for whether we're doing upsampling or downsampling of width and height. Don't request memory for horizontal buffer or encode buffer if we don't need it. Jorge Rodriguez 2014-07-24 23:50:14 -0700
666c025710 Fix non uniform scaling where out_w < in_w && out_h > in_h. Jorge Rodriguez 2014-07-24 23:32:25 -0700
736596ba09 Fix non uniform scaling where out_w > in_w && out_h < in_h. Jorge Rodriguez 2014-07-24 23:27:29 -0700
178e301ea4 Fix upsampling, avoid dereferencing in an inner loop. Jorge Rodriguez 2014-07-24 22:54:35 -0700
dbb7480f12 Fix nonuniform downsampling. Jorge Rodriguez 2014-07-24 22:30:35 -0700
fa69bc8551 Basic downsampling algorithm works for uniform sampling. Jorge Rodriguez 2014-07-24 22:09:08 -0700
297266b27b Starting to implement downsampling. Jorge Rodriguez 2014-07-24 19:10:45 -0700
7d8faf5727 Remove unused functions. Jorge Rodriguez 2014-07-24 15:02:54 -0700
8ac052ac8a Avoid gaps between box filter kernels. Jorge Rodriguez 2014-07-24 15:02:39 -0700
9e726bb3e4 The vertical resampling pass. Now all elements of the upscale algorithm are in place. Jorge Rodriguez 2014-07-24 14:20:18 -0700
152965f334 Decode enough scanlines into a ring buffer to make sure that we have enough source scanlines to do a vertical sampling. Jorge Rodriguez 2014-07-24 00:47:00 -0700
158effb62a More accurate names. Smaller size for contributors memory, more accurate to what's needed. Jorge Rodriguez 2014-07-23 23:08:06 -0700
855fb207be Merge remote-tracking branch 'remotes/nothings/master' Jorge Rodriguez 2014-07-23 22:24:59 -0700
55c5f0b3a0 Beginning of a more sophisticated resample algorithm, starting with calculating filter contributions per scan line. Jorge Rodriguez 2014-07-23 22:17:56 -0700
73562febc8 Merge 54d71cad2c into ee8e926317 Ronny Chevalier 2014-07-22 20:18:56 +0000
ee8e926317 even more resampling notes Sean Barrett 2014-07-22 12:45:24 -0700
92b08aa98a more resampling notes Sean Barrett 2014-07-22 12:39:29 -0700
6f779fb67a whoops imageresampler link Sean Barrett 2014-07-22 12:17:43 -0700
9c9a68787d imageresampler library reference Sean Barrett 2014-07-22 12:16:11 -0700
3e8a89cad1 more resampler notes Sean Barrett 2014-07-22 11:57:46 -0700
c27ccec436 resampler prototypes Sean Barrett 2014-07-22 11:37:54 -0700
63cce5c70a created stb_resample_ideas.txt Sean Barrett 2014-07-22 10:05:01 -0700
0155bd3ab6 We are going to support SRGB. Jorge Rodriguez 2014-07-21 19:51:11 -0700
ba861fa493 Allow specifying a stride. Jorge Rodriguez 2014-07-21 18:01:05 -0700
06b7b00696 It does nothing now but I want to support edge behavior in the future. Jorge Rodriguez 2014-07-21 16:14:32 -0700
c27c5b6fbe There's really no point in returning the output buffer. Jorge Rodriguez 2014-07-21 15:36:43 -0700
d54e74092e stb_resample initial implementation Jorge Rodriguez 2014-07-21 00:16:03 -0700
54d71cad2c stb_vorbis: fix unused variables Ronny Chevalier 2014-07-17 14:53:42 +0200
d54996e73a stb_vorbis: fix unused functions Ronny Chevalier 2014-07-17 14:49:48 +0200
8e67393dc2 stb_image: fix unused parameter Ronny Chevalier 2014-07-17 14:44:11 +0200
32c73c69d4 stb_vorbis: fix signed/unsigned comparison Ronny Chevalier 2014-07-17 14:43:29 +0200
3ad599be07 stb_image: fix undefined preprocessor definition Ronny Chevalier 2014-07-17 14:43:08 +0200
bcefca10f7 fix bad fix in previous fix Sean Barrett 2014-07-15 22:26:01 -0700
75b9e9cc1b update stb_image version number Sean Barrett 2014-07-09 23:45:58 -0700
b2cbed2634 Merge branch 'working' Sean Barrett 2014-07-09 23:44:48 -0700
1eb665906e cdecl fixes Sean Barrett 2014-07-09 23:41:40 -0700
68b5ec9392 fix cdecl Sean Barrett 2014-07-09 23:39:00 -0700
e0d86b0f5c STBI_ASSERT Sean Barrett 2014-07-09 23:35:25 -0700
3bf91543f4 revert img_n=0 initialization to original location Sean Barrett 2014-07-09 23:26:03 -0700