[gdal-dev] Fwd: [OpenJPEG] OpenJPEG 2.2.0 is out ! Faster and safer.

[Sandro Mani]

Hi Even

abidiff tells me:


* Incompatible ABI changes between openjpeg2-2.1.2-4.fc26.x86_64.rpm and openjpeg2-2.2.0-1.fc26.x86_64.rpm. ABI comparison took 0.45 second(s). Please review them.

================ changes of 'libopenjp2.so.2.1.2'===============
   Functions changes summary: 9 Removed, 5 Changed, 31 Added functions
   Variables changes summary: 0 Removed, 0 Changed, 0 Added variable

   9 Removed functions:

     'function void opj_mqc_create()'    {opj_mqc_create}
     'function OPJ_INT32 opj_mqc_decode()'    {opj_mqc_decode}
     'function void opj_mqc_destroy()'    {opj_mqc_destroy}
     'function OPJ_UINT32 opj_mqc_restart_enc()'    {opj_mqc_restart_enc}
     'function void opj_raw_create()'    {opj_raw_create}
     'function OPJ_UINT32 opj_raw_decode()'    {opj_raw_decode}
     'function void opj_raw_destroy()'    {opj_raw_destroy}
     'function void opj_raw_init_dec(OPJ_BYTE*, OPJ_UINT32)'    {opj_raw_init_dec}
     'function OPJ_UINT32 opj_raw_numbytes()'    {opj_raw_numbytes}

Is the ABI really 100% compatible?

Thanks
Sandro


On 10.08.2017 09:17, Even Rouault wrote:
>
> Hi,
>
> For those working with JPEG2000, see below
>
> Even
>
> ---------- Forwarded Message ----------
>
> Subject: [OpenJPEG] OpenJPEG 2.2.0 is out ! Faster and safer.
>
> Date: jeudi 10 août 2017, 04:58:13 CEST
>
> From: Antonin - OpenJPEG <info at openjpeg.org>
>
> To: openjpeg at googlegroups.com <openjpeg at googlegroups.com>
>
> Hi folks,
>
> OpenJPEG 2.2.0 is released today:
>
> https://github.com/uclouvain/openjpeg/releases/tag/v2.2.0
>
> This new release includes a significant number of improvements and bug 
> fixes. In particular:
>
> - Multi-threading support at decoding side
>
> - Several speed optimisations both at encoder and decoder, and both on 
> Wavelet Transform and Entropy Coding parts. On our test set, a 
> single-threaded execution is now around 20% faster (encoding or decoding).
>
> - Huge memory consumption reduction at decoding side (~60% reduction 
> on large images)
>
> - Several important bug fixes, in particular the one that was 
> preventing OpenJPEG to encode lossless in some specific situations, as 
> well as those related to mode switches (BYPASS/LAZY, RESTART/TERMALL, 
> etc).
>
> - Several security fixes thanks to the inclusion of OpenJPEG in the 
> Google OSS Fuzz project.
>
> Beside that, several improvements have been brought to the project 
> maintenance, like inclusion of benchmarking scripts to compare speed 
> with latest available kakadu binaries.
>
> And, last but not least, API and ABI are 100% compatible with previous 
> version.
>
> More info:
>
> News: https://github.com/uclouvain/openjpeg/blob/v2.2.0/NEWS.md
>
> Changelog: https://github.com/uclouvain/openjpeg/blob/v2.2.0/CHANGELOG.md
>
> Full Changelog: 
> https://github.com/uclouvain/openjpeg/compare/v2.1.2...v2.2.0
>
> As described in a previous post 
> (https://groups.google.com/d/msg/openjpeg/CltNQpbbwm4/jajpDKq0AAAJ), 
> all this has been made possible thanks to a funding from academic 
> institutions and archival organizations, namely:
>
> - Wellcome Library
>
> - Stanford University
>
> - Nationale Bibliotheek van Nederland (KBNL)
>
> - University of Michigan
>
> - University of California, Los Angeles (UCLA)
>
> And logistic support from the International Image Interoperability 
> Framework (IIIF), the Council on Library and Information Resources 
> (CLIR), intoPIX, and of course the Image and Signal Processing Group 
> (ISPGroup) from University of Louvain (UCL, Belgium) hosting the 
> OpenJPEG project. Thanks to all of them !
>
> Many thanks also to Even Rouault, the developper who actually 
> implemented these improvements, and of course to all contributors 
> having suggested fixes or enhancements.
>
> I hope you will find this new version useful, don’t hesitate to 
> provide feedback to improve it even further. By the way, more 
> improvements are yet to come in the coming months.
>
> Enjoy,
>
> Antonin
>
> -- 
>
> You are subscribed to the mailing-list of the OpenJPEG project 
> (www.openjpeg.org)
>
> To post: email to openjpeg at googlegroups.com
>
> To unsubscribe: email to openjpeg+unsubscribe at googlegroups.com
>
> For more options: visit http://groups.google.com/group/openjpeg
>
> OpenJPEG is mainly supported by :
>
> * UCL Image and Signal Processing Group 
> (http://sites.uclouvain.be/ispgroup)
>
> * IntoPIX (www.intopix.com)
>
> -----------------------------------------
>
> -- 
>
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>
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