0.6.5

This has two main changes:

1. Integrated the earlier part of pull request #32; this change update VS Code files, which I am not familiar with. It also updates CMakefiles.txt to enable compilation to a static library; the default is still shared library. Thanks to Chris for this.
2. Modified the code to eliminate compilation warning messages. Now, the code produces no warnings in Visual Studio, Xcode, and gcc. However, clang still generates a lot of errors. I will come around to fix this at some point. Thanks to Aaron for suggesting this in pull request #27, although I still have to address the clang compiler.

0.6.4

This release is bug fixes and a small hardening of code.

The contribution of this release are:

1. Closing issue #30. Thanks to Arron for highlighting this. Now there is additional 8 bytes in front of the codeblock buffer at the decoder. This extra buffer is a protection against the VLC decoder reading from before the start of the cleanup pass, which can happen because we are reading 4 bytes at a time from the VLC segment.
2. Bug fix in ojph_block_encoder.
3. Hardened the code by not decoding incomplete codeblocks.

0.6.3

This is mainly to close issue #28. The scratch field has been moved to ojph::local::codestream, and therefore it gets created and destructed with ojph::local::codestream.
Thanks to Dan for reporting this bug.
I think it is fair to say that Aaron in pull request #17 was alluding to this problem.
Thank you guys.

This also fixes a bug that was inadvertently introduced in the earlier commit, in not initializing of num_comp_bytes.

0.6.2

This main purpose of this release is to fix magb. The following modifications were made.

1. magb code is fixed; it was incorrect.
2. Modified the code that determines the number of bits needed for reversible implementation in param_qcd::set_rev_quant. This should have minimal effect; I doubt it will change anything.
3. removed some dead code.
4. some touch ups.

0.6.1

A few small modifications to address some issues.

• Closes Issue #18: CMakeLists.txt allows disabling SIMD instruction for compilations targeting ARM and other platforms.
• Closes Issue #21: Added some text in README.md to clarify the need to use an escape character before { and }.
• Closes Issue #22: Added some text in README.md to clarify how the downsampling option -downsamp should be used for the case of 422 (Obviously more work on documentation is needed).
• Closes Issue #23: It looks like some older versions of ffprobe are sensitive to my ppm header format, even though it is totally valid; this release modifies this header to make more acceptable. I think the new format should be compatible with more applications.

0.6.0

The main contributions are:

• Added support for IMF and BROADCAST profiles. ojph_compress now has the options "-profile IMF" and "-profile BROADCAST". These options do NOT change any configurations, but
  • run a check to see if the options selected, which might be the default options, meet the requested profile, producing a error message if something is wrong. The check includes testing any tile options.
  • insert the TLM marker segment into the generated codestream, which is required by these two profiles.
  • store each colour component into its own tile-part, which is a requirement for these two profiles.
• Addressed issue #7.

0.5.1

A small bug fix in the block encoder.

0.5.0

A few changes have been introduced since the last version.
A few bugs have also been fixed.
A info message has been introduced.
Some error/warn messages have been downgrade to info.
cmake now needs the key -DCMAKE_BUILD_TYPE=Release to produce a release build.

Both Aaron and Chris have contributed to this release. Sorry I did not include all their contributions, which I find useful, but I also have to keep the purity of the license, and manage things in a way and pace I feel comfortable with. Please feel free to utilize their pull requests.

0.4.1

This release has

1. a few bug fixes.
2. support for visual studio code remote containers with a docker image.
3. a script to launch an emscripten docker for building the javascript decoder.

0.4.0

New Features
Developed the capability to compile to javascript/wasm. This required adding a new file object (mem_infile) that enables the library to read a compressed image data stored in memory (as opposed to being stored on external storage device), and C wrapper that interfaces between C++ and javascript. The provided wrapper currently support decoding only, but this should cover the majority of applications.

Bug Fixes
A bug in the quantizer was fixed for the lossy path. This bug can manifest itself at high bitdepths, or a large number of decompositions.