3.8 KiB
3.8 KiB
OpenJPEG NEWS
More details in the Changelog
OpenJPEG 2.2.0
No API/ABI break compared to v2.1.2 but additional symbols for multithreading support (hence the MINOR version bump).
Codebase improvements
- Memory consumption reduction at decoding side #968
- Multi-threading support at decoding side #786
- Tier-1 speed optimizations (encoder and decoder) #945
- Tier-1 decoder further optimization #783
- Inverse 5x3 DWT speed optimization: single-pass lifting and SSE2/AVX2 implementation #957
- Fixed a bug that prevented OpenJPEG to compress losslessly in some situations #949
- Fixed BYPASS/LAZY, RESTART/TERMALL and PTERM mode switches
- Many other bug fixes (including security fixes)
Maintenance improvements
- Benchmarking scripts to automatically compare the speed of latest OpenJPEG build with latest release and/or Kakadu binaries #917
- CPU and RAM usage profiling scripts #918
- Codebase reformatting (with astyle) and scripts to automatically check that new commits comply with formatting guidelines #919
- Register OpenJPEG at Google OSS Fuzz initiative, so as to automatically have OpenJPEG tested against Google fuzzer #965
OpenJPEG 2.1.2
- Bug fixes (including security fixes)
- No API/ABI break compared to v2.1.1
OpenJPEG 2.1.1
- Huge amount of critical bugfixes
- Speed improvements
- No API/ABI break compared to v2.1
OpenJPEG 2.1.0
New Features
* Digital Cinema profiles have been fixed and updated
* New option to disable MCT if needed
* extended RAW support: it is now possible to input raw images
with subsampled color components (422, 420, etc)
* New way to deal with profiles
API/ABI modifications
(see here for details)
* Removed deprecated functions
* opj_stream_create_default_file_stream(FILE*,...)
* opj_stream_create_file_stream(FILE*,...)
* opj_stream_set_user_data (opj_stream_t* p_stream, void * p_data)
* Added
* opj_stream_create_default_file_stream(char*,...)
* opj_stream_create_file_stream(char*,...)
* opj_stream_destroy(opj_stream_t*)
* opj_stream_set_user_data (opj_stream_t* p_stream, void * p_data,
... opj_stream_free_user_data_fn p_function)
* JPEG 2000 profiles and Part-2 extensions defined through '#define'
* Changed
* 'alpha' field added to 'opj_image_comp' structure
* 'OPJ_CLRSPC_EYCC' added to enum COLOR_SPACE
* 'OPJ_CLRSPC_CMYK' added to enum COLOR_SPACE
* 'OPJ_CODEC_JPP' and 'OPJ_CODEC_JPX' added to CODEC_FORMAT
(not yet used in use)
* 'max_cs_size' and 'rsiz' fields added to opj_cparameters_t
Misc
* OpenJPEG is now officially conformant with JPEG 2000 Part-1
and will soon become official reference software at the
JPEG committee.
* Huge amount of bug fixes. See CHANGES for details.
OpenJPEG 2.0.0
New Features
* streaming capabilities
* merge JP3D
API modifications
(see here for details)
* Use a 64bits capable API
Misc
* removed autotools build system
* folders hierarchies reorganisation
* Huge amount of bug fixes. See CHANGES for details.