diff --git a/.gitmodules b/.gitmodules index ffddd74..2a742f6 100644 --- a/.gitmodules +++ b/.gitmodules @@ -17,3 +17,6 @@ [submodule "lib/python/pyjdata"] path = lib/python/pyjdata url = https://github.com/NeuroJSON/pyjdata.git +[submodule "lib/javascript/js-bjdata"] + path = lib/javascript/js-bjdata + url = https://github.com/NeuroJSON/js-bjdata.git diff --git a/README.md b/README.md index b5465b9..9476a14 100644 --- a/README.md +++ b/README.md @@ -22,13 +22,32 @@ repository (Commit 5ce1fe7). **The BJData format is no longer backward compatibl Libraries that support this specification include - Python: **pybj** (PIP: https://pypi.org/project/bjdata/, Github: https://github.com/NeuroJSON/pybj) - MATLAB/Octave: **JSONLab** (Debian/Ubuntu/Fedora: `sudo apt-get install octave-jsonlab`, Github: https://github.com/fangq/jsonlab) -- C: **ubj** (Github: https://github.com/fangq/ubj) -- C++: **JSON for Modern C++** (with this patch https://github.com/nlohmann/json/pull/3336) +- C: **ubj** (Github: https://github.com/NeuroJSON/ubj) +- C++: **JSON for Modern C++** (v3.11.0 or later) (https://github.com/nlohmann/json/) +- JavaScript: **bjd** (npm: https://www.npmjs.com/package/bjd, Github: https://github.com/NeuroJSON/js-bjdata) **Acknowledgement**: This specification was developed as part of the NeuroJSON project (http://neurojson.org), with funding support from the US National Institute of Health (NIH) under grant [U24-NS124027](https://reporter.nih.gov/project-details/10308329) (PI: [Qianqian Fang](http://fanglab.org)). + +## What is BJData + +BJData is a binary JSON format. It is similar to JSON but allows to store strongly-typed binary data. +The BJData format improves upon the widely supported UBJSON (https://ubjson.org) format by adding +the below key features + +- added 4 new data types previously missing from UBJSON, including `[u] - uint16`, `[m] - uint32`, + `[M] - uint64` and `[h] - half/float16`, +- first among all binary JSON formats to support **packed N-dimensional arrays (ndarray)** - a data + type that is of great importance to the scientific community, +- addopted **Little-Endian** as the default byte-order, as opposed to Big-Endian for UBJSON/MessagePack/CBOR, +- only non-zero-fixed-length data types are allowed in optimized container types (`$`), which + means `[{SHTFTN` can not follow `$`, but `UiuImLMLhdDC` are allowed + +![](./images/BJData_Diagram.png) + + ## How to participate You can use a number of methods to provide your feedback to the working @@ -56,8 +75,8 @@ draft of this file specification, including - One can browse the commit history of the specification document. If anyone is interested in commenting on a particular updated, you can also comment on any of the commit page using the same method. -- [Use the JData mailing list](https://groups.google.com/forum/#!forum/openjdata) - - You may send your comments to the jdata mailing list (openjdata at googlegroups.com). +- [Use NeuroJSON mailing list](https://groups.google.com/forum/#!forum/neurojson) + - You may send your comments to the neurojson mailing list (neurojson at googlegroups.com). Subscribers will discuss by emails, and if a motion is reached, proposals will be resubmitted as an Issue, and changes to the specification will be associated with this issue page. diff --git a/images/BJData_Diagram.pdf b/images/BJData_Diagram.pdf new file mode 100644 index 0000000..2a39e85 Binary files /dev/null and b/images/BJData_Diagram.pdf differ diff --git a/images/BJData_Diagram.png b/images/BJData_Diagram.png new file mode 100644 index 0000000..c26a4d8 Binary files /dev/null and b/images/BJData_Diagram.png differ diff --git a/images/BJData_Diagram.svg b/images/BJData_Diagram.svg new file mode 100644 index 0000000..cfc689c --- /dev/null +++ b/images/BJData_Diagram.svg @@ -0,0 +1,18555 @@ + + + + + + image/svg+xml + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + 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540f95c3de3cce9ff13a9e03ff769454c15a2006 +Subproject commit bed2366f5e9edaca6149c93824d5b0d1a1197c35 diff --git a/lib/matlab/zmat b/lib/matlab/zmat index 8b0a063..1ee0607 160000 --- a/lib/matlab/zmat +++ b/lib/matlab/zmat @@ -1 +1 @@ -Subproject commit 8b0a0634bca5fdf56ea47f59c8761317e68b5276 +Subproject commit 1ee06075d7de93a55cd04926e5f29b20677a8e9c diff --git a/lib/python/pybj b/lib/python/pybj index b90e140..a46355a 160000 --- a/lib/python/pybj +++ b/lib/python/pybj @@ -1 +1 @@ -Subproject commit b90e140b97dff6e13298c04a081fc68848c3d021 +Subproject commit a46355a0b0df0bec1817b04368a5a573358645ef diff --git a/lib/python/pyjdata b/lib/python/pyjdata index 5a8f680..ac02542 160000 --- a/lib/python/pyjdata +++ b/lib/python/pyjdata @@ -1 +1 @@ -Subproject commit 5a8f6808b16500daee00e34a2500a0f283e8cdee +Subproject commit ac0254226548d22c9746425b076f1f5939e24200