thanks to @ePirat, it turns out that !EMSCRIPTEN does not evaluate to 1 on other platforms, so the the #1345 actually disabled the test for all platforms.
By default, CMake assumes that the project is using both C and C++. By
explicitly passing 'C' as argument of the project() macro, we tell CMake
that only C is used, which prevents CMake from erroring out if a C++
compiler doesn't exist.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
[Retrieved (and slightly updated by adding enable_language(CXX) if
WITH_ASTYLE is set) from:
https://git.buildroot.net/buildroot/tree/package/openjpeg/0003-CMakeLists.txt-Don-t-require-a-C-compiler.patch]
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
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.
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.
Use an internal version of astyle (astyle 3.0). Scripts taken from QGIS.
astyle.options from https://github.com/uclouvain/openjpeg/issues/128
scripts/prepare-commit.sh can be used locally to automatically reformat
edited files.
Travis-CI will run scripts/verify-indentation.sh to verify committed files.
posix_memalign is only declared conditionally in stdlib.h,
so add one of the possible definitions to get the declaration.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Stefan Weil
Even Rouault
Mehdi Sabwat
Mehdi Sabwat
Peter Korsgaard
Antonin Descampe
Antonin Descampe
Mathieu Malaterre
Julien Malik
mayeut
Rex Dieter
Rex Dieter
Mickael Savinaud