forked from unom/punktfunk
The capture stream opened under AAudio's default VoiceRecognition input preset, which deliberately bypasses the HAL's acoustic echo canceller — so a phone playing the game audio out of its own speaker fed that audio straight back to the host. Two layers fix it, both behind a new "Echo cancellation" setting (default ON, next to the Microphone toggle in the touch and console settings, per-profile like every tier-P setting): - Native: the mic opens under the VoiceCommunication preset (HAL AEC/NS on the capture path) and allocates an audio session id. The open ladder is Exclusive+voice → Shared+voice → Exclusive → Shared — some HALs refuse the preset or a session id outright, and a mic without echo cancellation still beats no mic; the last rungs are exactly the preset-less open this always did. - Kotlin backstop: nativeStartMic now returns the allocated session id (0 = none), and StreamScreen hangs the Java AcousticEchoCanceler + NoiseSuppressor off it (guarded by isAvailable), releasing them on every mic-stop path — the surface teardown and the final dispose — so a surface recreate re-attaches instead of leaking effect engines. The playback stream is untouched: retagging it voice/communication would route it through the phone-call chain and regress quality. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>