Enum CaptureRequest 

pub enum CaptureRequest {
    StartOutputCapture {
        responder: CaptureStartOutputCaptureResponder,
    },
    StopOutputCapture {
        responder: CaptureStopOutputCaptureResponder,
    },
    WaitForQuiet {
        payload: CaptureWaitForQuietRequest,
        responder: CaptureWaitForQuietResponder,
    },
    QueueTriggeredCapture {
        payload: CaptureQueueTriggeredCaptureRequest,
        responder: CaptureQueueTriggeredCaptureResponder,
    },
    WaitForTriggeredCapture {
        responder: CaptureWaitForTriggeredCaptureResponder,
    },
    GetOutputAudio {
        responder: CaptureGetOutputAudioResponder,
    },
    #[non_exhaustive]
    _UnknownMethod {
        ordinal: u64,
        control_handle: CaptureControlHandle,
        method_type: MethodType,
    },
}

Variants

StartOutputCapture

Start capturing the outgoing audio for this device.

A virtual output device receives what would have played through the device’s speakers. This method reads from that virtual output device, into an internal buffer.

After calling this method, use StopOutputCapture to stop recording output and then GetOutputAudio to retrieve this captured audio.

• response error description of failure action to take.

Fields

responder: CaptureStartOutputCaptureResponder

StopOutputCapture

Stop capturing the outgoing audio for this device.

This method will succeed even if no output capture has been started.

After calling this method, use GetOutputAudio to retrieve the captured audio from the virtual device’s internal buffer and return it to the client.

• response error description of failure action to take.

Fields

responder: CaptureStopOutputCaptureResponder

WaitForQuiet

Wait for the specified period to elapse without any audio on the output device.

This method waits until zero-filled packets corresponding to the specified quiet period are observed on the virtual output device, and then it returns. This method will only wait up to the specified maximum wait time.

• request requested_quiet_period_ms duration of quiet period to wait for, in milliseconds.
• request maximum_wait_time_ms maximum duration to wait for, in milliseconds.

• response result description of whether the quiet period was observed or not.
• response error description of failure action to take.

Fields

payload: CaptureWaitForQuietRequest

responder: CaptureWaitForQuietResponder

QueueTriggeredCapture

Queue an asynchronous audio capture.

This method sets up a triggered audio capture that will begin capturing when it first observes audio on the virtual output device, and will continue either until a maximum capture duration is reached or until the virtual output device observes a configurable quiet period.

This method returns immediately once the capture is queued. A subsequent call to WaitForTriggeredCapture is required to wait for the completion of the operation.

This method is incompatible with StartOutputCapture and StopOutputCapture, and mixing calls in a single test is likely to result in an AudioTestError being raised.

• request maximum_time_to_wait_for_sound_ms maximum time to wait for non-quiet on output device, in milliseconds.
• request optional_quiet_before_stopping_ms stop recording after this duration of quiet is observed, in milliseconds.
• request maximum_capture_duration_ms maximum duration of the recording, in milliseconds.

• response error description of failure action to take.

Fields

payload: CaptureQueueTriggeredCaptureRequest

responder: CaptureQueueTriggeredCaptureResponder

WaitForTriggeredCapture

Wait for a previously queued audio capture to trigger and record.

This method waits for a previous call to QueueTriggeredCapture to either capture audio or time out. Calling this method without a corresponding call to QueueTriggeredCapture will result in an AudioTestError being returned.

This method is incompatible with StartOutputCapture and StopOutputCapture, and mixing calls in a single test is likely to result in an AudioTestError being raised.

• response result the result of the completed triggered capture, including whether or not it was triggered.
• response error description of failure action to take.

Fields

responder: CaptureWaitForTriggeredCaptureResponder

GetOutputAudio

Extract the captured outgoing audio data through a socket.

The socket is closed once it is fully drained.

User should have first called StartOutputCapture and StopOutputCapture. This method will return the contents of the internal buffer that was populated between the calls to those two methods.

Audio output format is 2-channel 48kHz 16-bit PCM.

• request audio_reader socket where full captured audio data will be streamed.

• response error description of failure action to take.

Fields

responder: CaptureGetOutputAudioResponder

#[non_exhaustive]

_UnknownMethod

An interaction was received which does not match any known method.

Fields

Non-exhaustive enum variants could have additional fields added in future. Therefore, non-exhaustive enum variants cannot be constructed in external crates and cannot be matched against.

ordinal: u64

Ordinal of the method that was called.

control_handle: CaptureControlHandle

method_type: MethodType

Implementations

impl CaptureRequest

pub fn into_start_output_capture( self, ) -> Option<CaptureStartOutputCaptureResponder>

pub fn into_stop_output_capture( self, ) -> Option<CaptureStopOutputCaptureResponder>

pub fn into_wait_for_quiet( self, ) -> Option<(CaptureWaitForQuietRequest, CaptureWaitForQuietResponder)>

pub fn into_queue_triggered_capture( self, ) -> Option<(CaptureQueueTriggeredCaptureRequest, CaptureQueueTriggeredCaptureResponder)>

pub fn into_wait_for_triggered_capture( self, ) -> Option<CaptureWaitForTriggeredCaptureResponder>

pub fn into_get_output_audio(self) -> Option<CaptureGetOutputAudioResponder>

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

Name of the method defined in FIDL

Trait Implementations

impl Debug for CaptureRequest

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

Formats the value using the given formatter.