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Implement MuteMicrophone to enable muted speech listener on iOS 15 and 16.

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Bug: webrtc:15233
Change-Id: I73e553f0c0a2258941d75b35d2475168c99ceba2
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/358723
Reviewed-by: Peter Hanspers <peterhanspers@webrtc.org>
Commit-Queue: Abby Yeh <abbyyeh@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#42747}
This commit is contained in:
Abby Yeh 2024-08-08 13:02:52 +02:00 committed by WebRTC LUCI CQ
parent 723ea45075
commit cae0aeb2b6
3 changed files with 43 additions and 3 deletions
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10
sdk/objc/native/src/audio/audio_device_ios.mm
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@ -1045,13 +1045,17 @@ bool AudioDeviceIOS::MicrophoneIsInitialized() const {
}
int32_t AudioDeviceIOS::MicrophoneMuteIsAvailable(bool& available) {
available = false;
available = true;
return 0;
}
int32_t AudioDeviceIOS::SetMicrophoneMute(bool enable) {
RTC_DCHECK_NOTREACHED() << "Not implemented";
return -1;
OSStatus result = audio_unit_->SetMicrophoneMute(enable);
if (result != noErr) {
RTCLogError(@"Set microphone %s failed, reason %d", enable ? "mute" : "unmute", result);
return -1;
}
return 0;
}
int32_t AudioDeviceIOS::MicrophoneMute(bool& enabled) const {

3
sdk/objc/native/src/audio/voice_processing_audio_unit.h
View File

@ -92,6 +92,9 @@ class VoiceProcessingAudioUnit {
// Uninitializes the underlying audio unit.
bool Uninitialize();
// Mutes the microphone.
bool SetMicrophoneMute(bool enable);
// Calls render on the underlying audio unit.
OSStatus Render(AudioUnitRenderActionFlags* flags,
const AudioTimeStamp* time_stamp,

33
sdk/objc/native/src/audio/voice_processing_audio_unit.mm
View File

@ -398,6 +398,39 @@ bool VoiceProcessingAudioUnit::Uninitialize() {
return true;
}
bool VoiceProcessingAudioUnit::SetMicrophoneMute(bool enable) {
RTC_DCHECK_GE(state_, kUninitialized);
RTCLog(@"Setting microphone %s.", enable ? "mute" : "unmute");
OSStatus result = noErr;
if (detect_mute_speech_) {
UInt32 muteUplinkOutput = enable ? 1 : 0;
result = AudioUnitSetProperty(vpio_unit_,
kAUVoiceIOProperty_MuteOutput,
kAudioUnitScope_Global,
kInputBus,
&muteUplinkOutput,
sizeof(muteUplinkOutput));
} else {
UInt32 enableInput = enable ? 0 : 1;
result = AudioUnitSetProperty(vpio_unit_,
kAudioOutputUnitProperty_EnableIO,
kAudioUnitScope_Input,
kInputBus,
&enableInput,
sizeof(enableInput));
}
if (result != noErr) {
RTCLogError(@"Failed to %s microphone. Error=%ld", (enable ? "mute" : "unmute"), (long)result);
return false;
}
RTCLog(@"Set microphone %s.", enable ? "mute" : "unmute");
return true;
}
OSStatus VoiceProcessingAudioUnit::Render(AudioUnitRenderActionFlags* flags,
const AudioTimeStamp* time_stamp,
UInt32 output_bus_number,