feat(cdp): report the native video sender capabilities

triform-admin commented

2026-09-12 02:43:53 +00:00

Owner

Isolation qualification currently queries renderer-side RTCRtpSender capabilities even though the native browser-process PeerConnectionFactory owns streaming. This can reject the custom encoder because the unrelated renderer advertises VP8.

Add browser-scope Cb.getVideoSenderCapabilities, lazily querying the installed native PCF. It returns its source discriminator and every codec name unchanged; missing wiring or an unavailable/empty factory returns a CDP error. Add the protocol contract and a repeated read-only probe in the existing CDP validation suite. Consumers must retain no-VP8 plus approved-codec enforcement and bind observations to the authenticated allocation and image provenance.

Validation: baseline make verify passed; changed-tree make lint, Python syntax validation and git diff --check passed. The exact-source chromeless-build-atlas-native-codec-20260912 job completed successfully: all 11 selected targets compiled/linked, seven unit-test binaries ran successfully, and the binary was packaged. The audio test was explicitly skipped. The new CDP probe has NOT run against a built guest (the compile lane skips CDP validation). Producer build/live qualification and consumer changes remain required; the current isolation gate and image pins are unchanged.

Isolation qualification currently queries renderer-side RTCRtpSender capabilities even though the native browser-process PeerConnectionFactory owns streaming. This can reject the custom encoder because the unrelated renderer advertises VP8. Add browser-scope Cb.getVideoSenderCapabilities, lazily querying the installed native PCF. It returns its source discriminator and every codec name unchanged; missing wiring or an unavailable/empty factory returns a CDP error. Add the protocol contract and a repeated read-only probe in the existing CDP validation suite. Consumers must retain no-VP8 plus approved-codec enforcement and bind observations to the authenticated allocation and image provenance. Validation: baseline make verify passed; changed-tree make lint, Python syntax validation and git diff --check passed. The exact-source chromeless-build-atlas-native-codec-20260912 job completed successfully: all 11 selected targets compiled/linked, seven unit-test binaries ran successfully, and the binary was packaged. The audio test was explicitly skipped. The new CDP probe has NOT run against a built guest (the compile lane skips CDP validation). Producer build/live qualification and consumer changes remain required; the current isolation gate and image pins are unchanged.

triform-admin added 1 commit

2026-09-12 02:43:54 +00:00