openjpeg/src/lib/openjp2/dwt.c, branch ccache Fork of openjpeg library for JPEG2000 encoding and decoding https://git.carlh.net/cgit/openjpeg/atom?h=ccache 2017-09-01T08:26:18Z Fix undefined shift behaviour in opj_dwt_is_whole_tile_decoding(). Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3255. Credit to OSS Fuzz 2017-09-01T08:26:18Z Even Rouault even.rouault@spatialys.com 2017-09-01T08:26:18Z urn:sha1:6ce49bf5aebb3c45c464fa82d14cfd4bf7026a28 Use IDWT whole tile decoding if the area of interest equals to the image bounds, taking into account the reduced resolution factor 2017-08-29T09:40:53Z Even Rouault even.rouault@spatialys.com 2017-08-29T09:40:53Z urn:sha1:04b70908a7ada29481d2e1903b76f44a68d4d268 Subtile decoding: fix overflows in subband coordinate computation that cause later buffer overflow. Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3115. Credit to OSS Fuzz. master only 2017-08-28T15:18:33Z Even Rouault even.rouault@spatialys.com 2017-08-28T15:18:33Z urn:sha1:a55c024fc6b917a409b85aeafd7326421c4aea34 opj_dwt_decode_partial_97(): perf improvement: limit copy of coefficients at end of horizontal pass to actual range of interest 2017-08-23T16:58:32Z Even Rouault even.rouault@spatialys.com 2017-08-23T16:58:32Z urn:sha1:bc71bd1219269057ea18e6acbc77a96ec37aba82 Add comments for filter_width values 2017-08-21T10:25:38Z Even Rouault even.rouault@spatialys.com 2017-08-21T10:25:38Z urn:sha1:17a7ac42d581c537cfc1da4324e53047ad82b13e Subtile decoding: only do 9x7 IDWT computations on relevant areas of tile-component buffer. 2017-08-20T20:02:41Z Even Rouault even.rouault@spatialys.com 2017-08-20T20:02:41Z urn:sha1:f87c5ef7ebef3d7a908e98f2de1b6a0336ae57ae Subtile decoding: only do 5x3 IDWT computations on relevant areas of tile-component buffer. 2017-08-18T13:08:51Z Even Rouault even.rouault@spatialys.com 2017-08-18T13:08:51Z urn:sha1:5d403250561398f7ba3041d9eb8c893bd680dd72 This lowers 'bin/opj_decompress -i ../MAPA.jp2 -o out.tif -d 0,0,256,256' down to 0.860s Comment fix 2017-07-06T10:11:37Z Even Rouault even.rouault@spatialys.com 2017-07-06T10:11:37Z urn:sha1:60f8ddf577b20ccbb3dc0559b624115b9ba522ba IDWT 5x3: fix bug in AVX2 implementation (#953, #957) 2017-06-29T22:03:05Z Even Rouault even.rouault@spatialys.com 2017-06-29T22:03:05Z urn:sha1:8fa405ee15b5151df40d8d96460257ee5b510135 IDWT 5x3: generalize SSE2 version for AVX2 2017-06-21T10:12:58Z Even Rouault even.rouault@spatialys.com 2017-06-21T10:12:58Z urn:sha1:fd0dc535ad9ae0d369d1039aaf56235583ca64ea Thanks to our macros that abstract SSE use, the functions can use AVX2 when available (at compile time) This brings an extra 23% speed improvement on bench_dwt in 64bit builds with AVX2 compared to SSE2.