Kacper Michajłow
14ed5e8ae3
This simulates the state of the repository after the PR is
rebased-and-merged into the target branch and validates the merged
result rather than the PR branch in isolation.
Without this step, CI may run against a stale branch. A PR that merges
cleanly can still fail verification after merging into target because
the target branch may have advanced and changed tests. Conversely, the
Docker image used for the build may no longer work with the old
repository state when testing an old PR branch. This also allows the PR
to be revalidated by simply rerunning CI, without requiring an explicit
rebase.
This change also fails CI early when rebase conflicts are detected. Since
PRs with conflicts cannot be merged, there is no value in running the
remaining verification steps.
This is bit strict as it likely will fail to rebase merge commits,
should they be present in the PR. However, we generally prefer linear
history. It's rebased mostly to avoid search for merge commit in target
branch. While for PR we can ask API how many commit there are and the
parent of that should be merge-base commit, for target branch it's
unknown how deep this common commit is. It would be trivial if we did
full non-shallow clone, but we do shallow and probably want to keep it
this way. This forces us to just replay commits from PR on the tip of
the current target branch. It's fine, this is what we want in the end of
the day.
Incidentally this also fixes recently merged
dd6ae3e024, which tries to validate commit
messages, but by default clone depth is 1 so only single commit message
of head commit in PR was merged. After this change all commits will be
visible. However, I still liked the API script that we had before, not
sure why this was completely reworked.
Signed-off-by: Kacper Michajłow <kasper93@gmail.com>
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides means to alter decoded audio and video through a directed graph of connected filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements color conversion and scaling routines.
Tools
- ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
- ffplay is a minimalistic multimedia player.
- ffprobe is a simple analysis tool to inspect multimedia content.
- Additional small tools such as
aviocat,ismindexandqt-faststart.
Documentation
The offline documentation is available in the doc/ directory.
The online documentation is available in the main website and in the wiki.
Examples
Coding examples are available in the doc/examples directory.
License
FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.
Contributing
Patches should be submitted to the ffmpeg-devel mailing list using
git format-patch or git send-email. Github pull requests should be
avoided because they are not part of our review process and will be ignored.