OpenJPEG NEWS

More details in the CHANGELOG

OpenJPEG 2.5.3 (Dec 2024)

No API/ABI break compared to v2.5.2

New Features

Use TLM (Tile Length Marker) segments to optimize decoding #1538
Add AVX2 and AVX512 optimization #1552
Support setting enumcs for CMYK and EYCC color space #1529

Bug fixes

Do not turn on 'TPsot==TNsot detection fix' when TNsot==1, and add a OPJ_DPARAMETERS_DISABLE_TPSOT_FIX flag to disable it #1560
opj_j2k_setup_encoder(): set numgbits = 1 for Cinema2K #1559
fix: when EPH markers are specified, they are required. #1547
sycc422_to_rgb(): fix out-of-bounds read accesses when 2 * width_component_1_or_2 + 1 == with_component_0 #1566
Avoid heap-buffer-overflow read on corrupted image in non-strict mode #1536
opj_j2k_read_sod(): validate opj_stream_read_data() return to avoid potential later heap-buffer-overflow in in opj_t1_decode_cblk when disabling strict mode #1534
fix integer Overflow at j2k.c:9614 #1530
Memory leak fixes in error code path of opj_compress #1567
opj_j2k_decode_tiles(): avoid use of uninitialized l_current_tile_no variable #1528
Do not allow header length to be zero in non-zero length packet #1526
Fix building on OpenBSD big endian hosts #1520

Changes in third party components

thirdparty/libz: update to zlib-1.3.1 #1542
thirdparty/libpng: update to libpng-1.6.43 #1541
thirdparty/libtiff: update to libtiff 4.6.0 #1540

OpenJPEG 2.5.2 (Feb 2024)

No API/ABI break compared to v2.5.1

Make sure openjpeg.h includes opj_config.h #1514

OpenJPEG 2.5.1 (Feb 2024)

No API/ABI break compared to v2.5.0

CMake: drop support for cmake < 3.5
Several bugfixes, including #1509 for CVE-2021-3575
Significant speed-up rate allocation by rate/distoratio ratio #1440

OpenJPEG 2.5.0 (May 2022)

No API/ABI break compared to v2.4.0, but additional symbols for subset of components decoding (hence the MINOR version bump).

Encoder: add support for generation of TLM markers #1359
Decoder: add support for high throughput (HTJ2K) decoding. #1381
Decoder: add support for partial bitstream decoding #1407
Bug fixes (including security fixes)

OpenJPEG 2.4.0 (December 2020)

No API/ABI break compared to v2.3.1, but additional symbols for subset of components decoding (hence the MINOR version bump).

Encoder: add support for multithreading #1248
Encoder: add support for generation of PLT markers #1246
Encoder: single-threaded performance improvements in forward DWT for 5-3 and 9-7 (and other improvements) #1253
Encoder: support IMF profiles #1235
Many bug fixes (including security fixes)

OpenJPEG 2.3.1 (April 2019)

No API/ABI break compared to v2.3.0

Many bug fixes (including security fixes)

OpenJPEG 2.3.0 (October 2017)

No API/ABI break compared to v2.2.0 but additional symbols for subset of components decoding (hence the MINOR version bump).

Sub-tile decoding: when setting a window of interest through the API function opj_set_decode_area(), only codeblocks that intersect this window are now decoded (i.e. MCT, IDWT, and entropy decoding are only done on the window of interest). Moreover, memory allocation now depends on the size of the window of interest (instead of the full tile size). #990 #1001 #1010
Ability to decode only a subset of components. This adds the following function opj_set_decoded_components(opj_codec_t p_codec, OPJ_UINT32 numcomps, const OPJ_UINT32 comps_indices, OPJ_BOOL apply_color_transforms) and equivalent opj_decompress -c compno[,compno]* option. #1022
Many bug fixes (including security fixes)

OpenJPEG 2.2.0 (August 2017)

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 (September 2016)

Bug fixes (including security fixes)
No API/ABI break compared to v2.1.1

OpenJPEG 2.1.1 (July 2016)

Huge amount of critical bugfixes
Speed improvements
No API/ABI break compared to v2.1

OpenJPEG 2.1.0 (April 2014)

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.

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!