Summary
AudioCapabilityQuery currently reports echo cancellation capabilities as software + disabled only. We intentionally fail exact echoCancellation: "system" to keep selection and option-resolution behavior consistent.
Problem
ResolveAudioOptions previously accepted "system" while capabilities did not advertise it, creating a mismatch between capability-based constraint selection and options application.
Requested work
- Implement platform capability detection for system echo cancellation mode.
- Advertise
EchoCancellationMode.System in MediaTrackCapabilities.EchoCancellation only when supported.
- Keep behavior aligned across:
InputDeviceInfo.GetCapabilities()- audio exact/ideal constraint selection
- audio options resolution path
- Add tests covering supported/unsupported system mode paths.
Notes
This is follow-up work to phase 3/#51 constraint-pattern completion.
Summary
AudioCapabilityQuerycurrently reports echo cancellation capabilities as software + disabled only. We intentionally fail exactechoCancellation: "system"to keep selection and option-resolution behavior consistent.Problem
ResolveAudioOptionspreviously accepted"system"while capabilities did not advertise it, creating a mismatch between capability-based constraint selection and options application.Requested work
EchoCancellationMode.SysteminMediaTrackCapabilities.EchoCancellationonly when supported.InputDeviceInfo.GetCapabilities()Notes
This is follow-up work to phase 3/#51 constraint-pattern completion.