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The VideoAdapter is used to configure encoding resolutions based on requested_resolution in an orientation agnostic way[1]. This means that if you request 1280x720 and the input frame is 720x1280, there is no downscale happening. However in the same file there is one instance of VideoAdapter::OnSinkWants() where requested_resolution is assumed to be expressed in landscape mode. This breaks the case where the 720x1280 is requested but the frame is 1280x720 which causes inconsistent behavior and breaks symmetry. This would also break simulcast since this code path is only applied with the top layer's requested resolution while the lower layers are still scaled in an agnostic way. A new test is added to verify the fix. Prior to the fix, the first half of the test was passing, after the fix both parts of the test pass. [1] https://source.chromium.org/chromium/chromium/src/+/main:third_party/webrtc/media/base/video_adapter.h;l=76;drc=02b5b024b66755a851a752b7851b124ba03f6cb6 Bug: webrtc:363019836 Change-Id: I564068e98c93cab89eb38a10b0f8378899438e5b Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/361160 Commit-Queue: Henrik Boström <hbos@webrtc.org> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Cr-Commit-Position: refs/heads/main@{#42923}
WebRTC is a free, open software project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. The WebRTC components have been optimized to best serve this purpose.
Our mission: To enable rich, high-quality RTC applications to be developed for the browser, mobile platforms, and IoT devices, and allow them all to communicate via a common set of protocols.
The WebRTC initiative is a project supported by Google, Mozilla and Opera, amongst others.
Development
See here for instructions on how to get started developing with the native code.
Authoritative list of directories that contain the native API header files.
More info
- Official web site: http://www.webrtc.org
- Master source code repo: https://webrtc.googlesource.com/src
- Samples and reference apps: https://github.com/webrtc
- Mailing list: http://groups.google.com/group/discuss-webrtc
- Continuous build: https://ci.chromium.org/p/webrtc/g/ci/console
- Coding style guide
- Code of conduct
- Reporting bugs
- Documentation