Enum HeadsetGainRequest 

pub enum HeadsetGainRequest {
    SetSpeakerGain {
        requested: u8,
        control_handle: HeadsetGainControlHandle,
    },
    WatchSpeakerGain {
        responder: HeadsetGainWatchSpeakerGainResponder,
    },
    SetMicrophoneGain {
        requested: u8,
        control_handle: HeadsetGainControlHandle,
    },
    WatchMicrophoneGain {
        responder: HeadsetGainWatchMicrophoneGainResponder,
    },
}

Control Headset Speaker and Microphone gain and receive reports of current values as specified in HFP v1.8, Section 4.29. This protocol is served by the Hfp service.

Gain is represented as an absolute value on a scale from 0 to 15. 0 is the minimum gain and 15 is the maximum gain. It is related to a particular (implementation dependent) volume level controlled by the Headset.

Epitaphs:

This channel will be closed with a ZX_ERR_ALREADY_BOUND epitaph if there is already an active HeadsetGain channel.

This channel will be closed with a ZX_ERR_NOT_SUPPORTED epitaph if the Hfp service is not configured to support remote volume control or the peer headset does not support remote volume control. If the channel is closed with this error, the client should not attempt to reopen it using the PeerHandler::GainControl request on the same PeerHandler connection.

This channel will be closed with a ZX_ERR_INVALID_ARGUMENT epitaph if invalid arguments are passed to requests. See documentation on specific requests for more details.

Variants

SetSpeakerGain

Make a request to the headset to set the speaker gain to requested.

requested must be in the range [0-15] inclusive. Any values outside of this range will result in the channel closing with a ZX_ERR_INVALID_ARGUMENT epitaph.

Fields

requested: u8

control_handle: HeadsetGainControlHandle

WatchSpeakerGain

Hanging get to watch for updates to the headset speaker gain. Responses represent the current gain value that is set.

The returned gain value will always be in the range [0-15] inclusive.

Fields

responder: HeadsetGainWatchSpeakerGainResponder

SetMicrophoneGain

Make a request to the Headset to set the microphone gain to requested.

requested must be in the range [0-15] inclusive. Any values outside of this range will result in the channel closing with a ZX_ERR_INVALID_ARGUMENT epitaph.

Fields

requested: u8

control_handle: HeadsetGainControlHandle

WatchMicrophoneGain

Hanging get to watch for updates to the headset microphone gain. Responses represent the current gain value that is set.

The returned gain value will always be in the range [0-15] inclusive.

Fields

responder: HeadsetGainWatchMicrophoneGainResponder

Implementations

impl HeadsetGainRequest

pub fn into_set_speaker_gain(self) -> Option<(u8, HeadsetGainControlHandle)>

pub fn into_watch_speaker_gain( self, ) -> Option<HeadsetGainWatchSpeakerGainResponder>

pub fn into_set_microphone_gain(self) -> Option<(u8, HeadsetGainControlHandle)>

pub fn into_watch_microphone_gain( self, ) -> Option<HeadsetGainWatchMicrophoneGainResponder>

pub fn method_name(&self) -> &'static str

Name of the method defined in FIDL

Trait Implementations

impl Debug for HeadsetGainRequest

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.