2016-07-05 15:29:02 +02:00
# OpenJPEG NEWS
More details in the [Changelog ](https://github.com/uclouvain/openjpeg/blob/master/CHANGELOG.md )
2017-08-10 02:28:17 +02:00
## 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 ](https://github.com/uclouvain/openjpeg/pull/968 )
* Multi-threading support at decoding side [\#786 ](https://github.com/uclouvain/openjpeg/pull/786 )
* Tier-1 speed optimizations (encoder and decoder) [\#945 ](https://github.com/uclouvain/openjpeg/pull/945 )
* Tier-1 decoder further optimization [\#783 ](https://github.com/uclouvain/openjpeg/pull/783 )
* Inverse 5x3 DWT speed optimization: single-pass lifting and SSE2/AVX2 implementation [\#957 ](https://github.com/uclouvain/openjpeg/pull/957 )
* Fixed a bug that prevented OpenJPEG to compress losslessly in some situations [\#949 ](https://github.com/uclouvain/openjpeg/pull/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 ](https://github.com/uclouvain/openjpeg/pull/917 )
* CPU and RAM usage profiling scripts [\#918 ](https://github.com/uclouvain/openjpeg/pull/918 )
* Codebase reformatting (with astyle) and scripts to automatically check that new commits comply with formatting guidelines [\#919 ](https://github.com/uclouvain/openjpeg/pull/919 )
* Register OpenJPEG at Google OSS Fuzz initiative, so as to automatically have OpenJPEG tested against Google fuzzer [\#965 ](https://github.com/uclouvain/openjpeg/issues/965 )
2016-09-28 20:15:53 +02:00
## OpenJPEG 2.1.2
* Bug fixes (including security fixes)
* No API/ABI break compared to v2.1.1
2016-07-05 15:29:02 +02:00
## 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 ](http://www.openjpeg.org/abi-check/timeline/openjpeg/ ) 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 ](http://www.openjpeg.org/abi-check/timeline/openjpeg/ ) for details)
* Use a 64bits capable API
### Misc
* removed autotools build system
* folders hierarchies reorganisation
* Huge amount of bug fixes. See CHANGES for details.
