Enum DeviceRequest

pub enum DeviceRequest {
    GetFormat {
        responder: DeviceGetFormatResponder,
    },
    GetGain {
        responder: DeviceGetGainResponder,
    },
    GetBuffer {
        responder: DeviceGetBufferResponder,
    },
    SetNotificationFrequency {
        notifications_per_ring: u32,
        responder: DeviceSetNotificationFrequencyResponder,
    },
    GetPosition {
        responder: DeviceGetPositionResponder,
    },
    ChangePlugState {
        plug_change_time: i64,
        plugged: bool,
        responder: DeviceChangePlugStateResponder,
    },
    AdjustClockRate {
        ppm_from_monotonic: i32,
        responder: DeviceAdjustClockRateResponder,
    },
}

This protocol represents the base functionality of active audio devices. A device is active until this protocol is closed, at which point the device is automatically removed.

Variants

GetFormat

Returns the format selected by the client, or NO_RING_BUFFER if the client has not yet selected a ring buffer format.

Fields

responder: DeviceGetFormatResponder

GetGain

Returns the current gain state for this device.

Fields

responder: DeviceGetGainResponder

GetBuffer

Returns details about the ring buffer. Returns NO_RING_BUFFER if the client has not yet created the ring buffer.

Fields

responder: DeviceGetBufferResponder

SetNotificationFrequency

Overrides the position notification frequency for this stream. This affects the frequency of OnPositionNotify events only. It does not affect the frequency of notification events sent through the audio driver APIs.

Fields

notifications_per_ring: u32

responder: DeviceSetNotificationFrequencyResponder

GetPosition

Returns the current position (in bytes) within the ring buffer, along with the time (per MONOTONIC clock) that corresponds with that position. This can only be called after the ring buffer is established. Returns NOT_STARTED if the device has not yet Started streaming.

Fields

responder: DeviceGetPositionResponder

ChangePlugState

Hot-plugs or hot-unplugs an active virtual device, at the specified time.

Fields

plug_change_time: i64

plugged: bool

responder: DeviceChangePlugStateResponder

AdjustClockRate

Immediately change the virtual device’s clock rate, as expressed in the timing and content of position notifications the driver emits. ‘ppm_monotonic’ cannot exceed [-1000,+1000]. Each rate change in rate is standalone; i.e. successive rate changes are not cumulative.

Fields

ppm_from_monotonic: i32

responder: DeviceAdjustClockRateResponder

Implementations

impl DeviceRequest

pub fn into_get_format(self) -> Option<DeviceGetFormatResponder>

pub fn into_get_gain(self) -> Option<DeviceGetGainResponder>

pub fn into_get_buffer(self) -> Option<DeviceGetBufferResponder>

pub fn into_set_notification_frequency( self, ) -> Option<(u32, DeviceSetNotificationFrequencyResponder)>

pub fn into_get_position(self) -> Option<DeviceGetPositionResponder>

pub fn into_change_plug_state( self, ) -> Option<(i64, bool, DeviceChangePlugStateResponder)>

pub fn into_adjust_clock_rate( self, ) -> Option<(i32, DeviceAdjustClockRateResponder)>

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

Name of the method defined in FIDL

Trait Implementations

impl Debug for DeviceRequest

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

Formats the value using the given formatter.