| commit | b53f779b059f9c04c4f72555596fb754ac08274b | [log] [tgz] |
|---|---|---|
| author | Dale Curtis <dalecurtis@chromium.org> | Tue Jun 08 23:26:36 2021 |
| committer | Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> | Wed Jun 09 00:02:05 2021 |
| tree | 5009172066f608bf441a4793d99a5223d4ab1662 | |
| parent | 349d7714bde23d1d2b12a61d6b63e3307c0d98cf [diff] |
[WebCodecs] Implement keyframe enforcement for flush, configure. This change checks that the first encoded chunk after a flush() or configure() is a keyframe. For AV1, VP8, VP9, and H.264 the bitstream is analyzed to ensure the packet is actually a key frame. Since Chromium doesn't have a Theora or xHE-AAC parser, no analysis is done for those codecs beyond checking that the type field is set to 'key'. On platforms without libvpx or libaom, we will also skip bitstream analysis. I originally wrote this change using the media::Vp8Parser and media::Vp9Parser classes, but since they are not currently used on Android that brings in 16k+ of binary size. As such I've switched to using libvpx for bitstream analysis. This change also adds AV1 and VP8 to our list of tested codecs. This change also fixes an issue with the AudioEncoder where it was marking all frames as delta frames instead of keyframes. Fixed: 1213680 Change-Id: Ibd8fb9daeb6519c8a72aec66bdc4711261113e28 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2921021 Commit-Queue: Dale Curtis <dalecurtis@chromium.org> Reviewed-by: James Zern <jzern@google.com> Reviewed-by: Chrome Cunningham <chcunningham@chromium.org> Cr-Commit-Position: refs/heads/master@{#890463}
The web-platform-tests Project is a cross-browser test suite for the Web-platform stack. Writing tests in a way that allows them to be run in all browsers gives browser projects confidence that they are shipping software that is compatible with other implementations, and that later implementations will be compatible with their implementations. This in turn gives Web authors/developers confidence that they can actually rely on the Web platform to deliver on the promise of working across browsers and devices without needing extra layers of abstraction to paper over the gaps left by specification editors and implementors.
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Clone or otherwise get https://github.com/web-platform-tests/wpt.
Note: because of the frequent creation and deletion of branches in this repo, it is recommended to “prune” stale branches when fetching updates, i.e. use git pull --prune (or git fetch -p && git merge).
See the documentation website and in particular the system setup for running tests locally.
The wpt command provides a frontend to a variety of tools for working with and running web-platform-tests. Some of the most useful commands are:
wpt serve - For starting the wpt http serverwpt run - For running tests in a browserwpt lint - For running the lint against all testswpt manifest - For updating or generating a MANIFEST.json test manifestwpt install - For installing the latest release of a browser or webdriver server on the local machine.wpt serve-wave - For starting the wpt http server and the WAVE test runner. For more details on how to use the WAVE test runner see the documentation.On Windows wpt commands must be prefixed with python or the path to the python binary (if python is not in your %PATH%).
python wpt [command]
Alternatively, you may also use Bash on Ubuntu on Windows in the Windows 10 Anniversary Update build, then access your windows partition from there to launch wpt commands.
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Absolutely everyone is welcome to contribute to test development. No test is too small or too simple, especially if it corresponds to something for which you've noted an interoperability bug in a browser.
The way to contribute is just as usual:
git checkout -b topic../wpt lint as described above.If you spot an issue with a test and are not comfortable providing a pull request per above to fix it, please file a new issue. Thank you!