Kernel 6.18#44
Open
Cn8001 wants to merge 8 commits into
Open
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
This pull request introduces significant changes to support the Linux kernel 6.x stateless codec API, modernizes the codebase to use upstream V4L2 control headers, and improves H.264 decoding reliability and compatibility. Key updates include a new documentation addendum for kernel 6.x, replacement of custom control headers with standard kernel headers, refactoring to use stateless V4L2 controls, and several fixes to the H.264 decoding pipeline.
Kernel 6.x port and documentation:
README.md: Added a comprehensive addendum describing the port to the kernel 6.x stateless codec API, usage instructions, supported hardware, limitations, and verification methods.Modernization: Upstream V4L2 control headers:
src/config.c,src/context.c,src/h264.c,src/h265.c: Replaced custom codec control headers (e.g.,h264-ctrls.h,hevc-ctrls.h) with the upstream<linux/v4l2-controls.h>, aligning with kernel 6.x and reducing maintenance burden. [1] [2] [3] [4]include/h264-ctrls.h,include/hevc-ctrls.h: Added guards to avoid conflicts with upstream kernel headers. [1] [2] [3] [4] [5] [6]Stateless V4L2 controls and H.264 pipeline fixes:
src/h264.c: Updated to use stateless V4L2 control IDs (e.g.,V4L2_CID_STATELESS_H264_*) instead of legacy MPEG controls, and split slice prediction weights into a dedicated control as required by the stateless API.src/h264.c: Fixed and improved H.264 DPB and slice parameter handling, including proper filling of reference fields, passing of scaling matrix flags, and correct mapping of picture parameters. [1] [2] [3] [4] [5] [6] [7]Profile detection and context creation improvements:
src/config.c,src/context.c: Improved detection of supported profiles and pixel formats, including support for single- and multi-planar output queues, and switched to the correct H.264 slice format (V4L2_PIX_FMT_H264_SLICE). [1] [2] [3] [4]src/context.c,src/context.h: Ensured a buffer pool is always created for the output queue, even when no surfaces are provided at context creation, improving compatibility with modern libva clients. [1] [2]These changes collectively bring the codebase up to date with the latest Linux stateless video decoding APIs, improve hardware compatibility, and enhance robustness for modern VA-API clients.