241e9e8efe
Fix potential overflow related issues spotted by LGTM code analysis ( #1402 )
2022-01-18 21:55:10 +01:00
c22ea12219
Workaroudn cppcheck (correct) warning about same code in then and else branches
2017-09-19 18:35:31 +02:00
ce8edf9bff
Replace C++ style comments by C ones
2017-09-19 18:25:55 +02:00
d415723fd9
Replace C++ style comments by C ones
2017-09-19 18:22:07 +02:00
fdef69b43c
Fix warnings and errors when compiling with a c++ compiler ( #1021 )
2017-09-19 12:46:20 +02:00
579b8937ea
Replace uses of size_t by OPJ_SIZE_T
2017-09-04 17:35:52 +02:00
7017e67a01
sparse_array: optimizations for lossy case
2017-09-01 22:23:29 +02:00
873004c615
Sub-tile decoding: speed up vertical pass in IDWT5x3 by processing 4 cols at a time
2017-09-01 16:31:00 +02:00
b2cc8f7f81
Optimize reading/write into sparse array
2017-09-01 16:30:50 +02:00
98b9310361
Various changes to allow tile buffers of more than 4giga pixels
...
Untested though, since that means a tile buffer of at least 16 GB. So
there might be places where uint32 overflow on multiplication still occur...
2017-09-01 16:30:44 +02:00
f9e9942330
Sub-tile decoding: only allocate tile component buffer of the needed dimension
...
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.
2017-09-01 16:30:29 +02:00
Eric Harvey
Even Rouault