Exercise AV1 simulcast paths in tests (re-upload).

- Patch Set 1: Re-land of 297982.
- Patch Set 2: Skip test (return early) if AV1 is not available.

Original CL description (297982):

This is something we get "for free" with the
"WebRTC-AllowDisablingLegacyScalability" field trial that has been
wired up to support VP9 simulcast.

This test works and passes, however the ramp-up time is pretty bad.
- VP9 simulcast takes approximately 4 seconds to ramp up.
- VP9 SVC takes approximately 16 seconds to ramp up.
- AV1 simulcast takes approximately 22 seconds to ramp up.

A TODO is added (webrtc:15006) and the test is given extra timeout,
a full minute to get bytes flowing on all layers.

Despite ramp-up being bad, it's important to test that AV1 simulcast
is in fact working to avoid regressions due to obsolete assumptions
about which codec do or do not support simulcast. AV1 simulcast is an
opt-in feature so there is no harm in the API not being perfect yet.

Bug: webrtc:15005, webrtc:15006
Change-Id: Ie8ec9f17c709ef93525e4ea5feb7c95496062add
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/298050
Reviewed-by: Jeremy Leconte <jleconte@google.com>
Auto-Submit: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Jeremy Leconte <jleconte@google.com>
Cr-Commit-Position: refs/heads/main@{#39597}
1 file changed
tree: 4e3bf11faaeb9d0bb27fbaa2b6d1d05d193085e0
  1. api/
  2. audio/
  3. build_overrides/
  4. call/
  5. common_audio/
  6. common_video/
  7. data/
  8. docs/
  9. examples/
  10. experiments/
  11. g3doc/
  12. infra/
  13. logging/
  14. media/
  15. modules/
  16. net/
  17. p2p/
  18. pc/
  19. resources/
  20. rtc_base/
  21. rtc_tools/
  22. sdk/
  23. stats/
  24. system_wrappers/
  25. test/
  26. tools_webrtc/
  27. video/
  28. .clang-format
  29. .git-blame-ignore-revs
  30. .gitignore
  31. .gn
  32. .mailmap
  33. .style.yapf
  34. .vpython
  35. .vpython3
  37. BUILD.gn
  39. codereview.settings
  40. DEPS
  44. license_template.txt
  45. native-api.md
  46. OWNERS
  49. PRESUBMIT.py
  50. presubmit_test.py
  51. presubmit_test_mocks.py
  52. pylintrc
  53. README.chromium
  54. README.md
  56. webrtc.gni
  57. webrtc_lib_link_test.cc
  58. whitespace.txt

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.

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The WebRTC initiative is a project supported by Google, Mozilla and Opera, amongst others.


See here for instructions on how to get started developing with the native code.

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