openjpeg/CMakeLists.txt, branch floating_point_irreversible_encoding Fork of openjpeg library for JPEG2000 encoding and decoding https://git.carlh.net/cgit/openjpeg/atom?h=floating_point_irreversible_encoding 2020-05-20T18:30:21Z Add multithreaded support in the DWT encoder. 2020-05-20T18:30:21Z Even Rouault even.rouault@spatialys.com 2020-04-30T09:52:42Z urn:sha1:07d1f775a1ef95496b0c78b18f671dac41983320 Update the bench_dwt utility to have a -decode/-encode switch Measured performance gains for DWT encoder on a Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz (4 cores, hyper threaded) Encoding time: $ ./bin/bench_dwt -encode -num_threads 1 time for dwt_encode: total = 8.348 s, wallclock = 8.352 s $ ./bin/bench_dwt -encode -num_threads 2 time for dwt_encode: total = 9.776 s, wallclock = 4.904 s $ ./bin/bench_dwt -encode -num_threads 4 time for dwt_encode: total = 13.188 s, wallclock = 3.310 s $ ./bin/bench_dwt -encode -num_threads 8 time for dwt_encode: total = 30.024 s, wallclock = 4.064 s Scaling is probably limited by memory access patterns causing memory access to be the bottleneck. The slightly worse results with threads==8 than with thread==4 is due to hyperthreading being not appropriate here. update for release 2.3.1 2019-04-02T09:02:20Z Antonin Descampe info@openjpeg.org 2019-04-02T09:02:20Z urn:sha1:c7798bb0c636c89ab7f0bab4d89e7f0136e0e55a Update BUILD version for release 2.3.1 2019-04-02T09:00:58Z Antonin Descampe info@openjpeg.org 2019-04-02T09:00:58Z urn:sha1:8196ab531e79602fe3c947d09d3240c25c358731 CMakeLists.txt: turn BUILD_PKGCONFIG_FILES ON by default on Windows if compiler is GCC 2017-10-14T20:42:12Z Even Rouault even.rouault@spatialys.com 2017-10-14T20:42:12Z urn:sha1:53d265576ae0cea480f22f3b08f1c05c8af40d4d Preparing v2.3.0 release 2017-10-03T20:08:30Z Antonin Descampe antonin@gmail.com 2017-10-03T20:08:30Z urn:sha1:0b8903d9ea482d85dcaf8def1ddc41597105b228 Build: make sure that -DBUILD_SHARED_LIBS:bool=off is honoured to build only the static lib (#1019) 2017-09-17T10:17:49Z Even Rouault even.rouault@spatialys.com 2017-09-17T10:17:49Z urn:sha1:3dfc6ca2bcf06fd1adb6b6b4cecc6c092f08ba0b Sub-tile decoding: only allocate tile component buffer of the needed dimension 2017-09-01T14:30:29Z Even Rouault even.rouault@spatialys.com 2017-09-01T14:30:29Z urn:sha1:f9e9942330f476b66ac4a35d0ae521200878f343 Instead of being the full tile size. * Use a sparse array mechanism to store code-blocks and intermediate stages of IDWT. * IDWT, DC level shift and MCT stages are done just on that smaller array. * Improve copy of tile component array to final image, by saving an intermediate buffer. * For full-tile decoding at reduced resolution, only allocate the tile buffer to the reduced size, instead of the full-resolution size. Preparing Release v2.2.0 2017-08-10T00:28:17Z Antonin Descampe antonin@gmail.com 2017-08-10T00:28:17Z urn:sha1:bc21818c635f1f84aa72bb327a20ca42c3b6dcbe Add bench_dwt program (compiled only if BUILD_BENCH_DWT=ON) 2017-06-20T15:56:19Z Even Rouault even.rouault@spatialys.com 2017-06-20T15:56:19Z urn:sha1:919ed5f8b8681aeae54ce3884b3ecca56cadc2e0 CMake: add stronger warnings for openjp2 lib/bin by default, and error out on declaration-after-statement 2017-05-23T13:47:57Z Even Rouault even.rouault@spatialys.com 2017-05-23T13:12:19Z urn:sha1:a8ca7c51f38a4cbdcb4a541137478df03e5eb76d And remove occurences of unused arguments in src/lib/openjp2