Commit Graph

11 Commits

Author SHA1 Message Date
Rich Geldreich
7d784c7288 Correcting the copyright date, as all of the Basis Universal code was written during/after April '19. 2019-06-09 18:29:41 -07:00
richgel999
ab722fa2e1 - Adding support for skip blocks, i-frames and p-frames to the backend and transcoder, for texture video use.
- For PVRTC1, we now memset() any extra blocks after the blocks we know will be transcoded into. This is done because in GL there is padding that occurs on textures smaller than 8x8.
- Removing all OpenMP usage and replacing it with a basis C++11 job system.
- Fixing TSVQ class so it can split very long "thin" clusters that before weren't being split. This improves endpoint quantization on videos and complex 2D textures.
- More frontend perf. optimizations.

Tested on OSX, Linux with gcc/clang, and Win using MSVC 2019.
2019-06-07 20:35:38 -07:00
Rich Geldreich
4f08db6525 Adding more checks to canonical Huffman decoder's table initialization function. They don't seem necessary, as I didn't discover them during fuzzing. These fixes are precautionary. 2019-05-10 16:30:25 -07:00
Rich Geldreich
878f523522 Adding check to make sure codelength Huffman table was actually created successfully. 2019-05-09 22:14:23 -07:00
Rich Geldreich
ce9aeb9cc8 Refining the last Huffman fix found through fuzz testing 2019-05-09 22:00:59 -07:00
Rich Geldreich
9af44e629f Another fuzz testing fix 2019-05-09 21:49:07 -07:00
Rich Geldreich
78e22234bd More transcoder fixes found during fuzz testing (I disabled all header/data CRC checking by setting BASISU_NO_HEADER_OR_DATA_CRC16_CHECKS to 1). 2019-05-09 14:43:13 -07:00
Rich Geldreich
d7b22fc404 Adding -fuzz_testing command line option, which disables the file data CRC16 check used by the -validate command. To fuzz testing using zzuf on Linux:
zzuf -d -c -s 1000000:2000000 ./basisu -validate -fuzz_testing kodim23.basis
2019-05-09 12:43:59 -07:00
Rich Geldreich
d699c819f7 Moving g_hamming_dist[] array from transcoder to encoder (it's never used by the transcoder).
Adding remarks to basisu_file_header.h
2019-05-08 20:01:35 -07:00
Rich Geldreich
130eb9f115 Major compression performance/quality improvements, for a 15-35% or so decrease in file size for the same Y PSNR/SSIM. The basis file format has changed due to these optimizations.
Increasing the max codebook size to 16K vs. 8K, for a major increase in the max achievable quality.
Adding exception catching to command line tool.
Enabling debug iterators on MSVC.
Refining command line options, adding "-individual" flag to create multiple .basis files (vs. a texture array).
Changing default colorspace to sRGB, because that's probably the best default. -linear disables this and uses linear colorspace metrics.
PNG reader in 32-bit builds checks the size of the file before loading to avoid out of memory exceptions.
2019-05-07 15:52:54 -07:00
Rich Geldreich
bd7d786a8a Initial checkin 2019-04-29 18:53:00 -07:00