Enum InjectionRequest 

pub enum InjectionRequest {
    WriteInputAudio {
        index: i32,
        audio_writer: Socket,
        control_handle: InjectionControlHandle,
    },
    GetInputAudioSize {
        index: i32,
        responder: InjectionGetInputAudioSizeResponder,
    },
    ClearInputAudio {
        index: i32,
        responder: InjectionClearInputAudioResponder,
    },
    WaitUntilInputIsDone {
        responder: InjectionWaitUntilInputIsDoneResponder,
    },
    StartInputInjection {
        index: i32,
        responder: InjectionStartInputInjectionResponder,
    },
    StopInputInjection {
        responder: InjectionStopInputInjectionResponder,
    },
    #[non_exhaustive]
    _UnknownMethod {
        ordinal: u64,
        control_handle: InjectionControlHandle,
        method_type: MethodType,
    },
}

A protocol that supports audio input injection.

Connections to this protocol control a virtual input audio device which can be used to inject audio as if it came from a microphone.

The server contains indexed tracks which can be independently queued and played. When injecting audio, it is common to pre-load all required inputs for a test scenario and play them sequentially, using WaitUntilInputIsDone to determine when to start the next stage.

Variants

WriteInputAudio

Set the audio to be injected at index.

The first time this is called, an empty vector will be created, subsequent calls will append to audio_data to the same vector.

Use ClearInputAudio to clear audio input data stored at index.

Further requests on the same Injection connection are blocked until the audio_writer socket is drained completely. To determine when injection is complete, users may initiate a call to GetInputAudioSize immediately following the call to this method.

• request index refers a specific audio_data input record. We can have multiple records.
• request audio_writer socket where audio data will be loaded from.

Fields

index: i32

audio_writer: Socket

control_handle: InjectionControlHandle

GetInputAudioSize

Get the size of audio data stored at index.

This method returns the number of bytes of input data stored at the given index.

If a WriteInputAudio call is pending for the given index, this method will block until the socket is drained and the data is fully stored.

• request index refers to a specific audio_data input record.

• response error description of failure action to take.

Fields

index: i32

responder: InjectionGetInputAudioSizeResponder

ClearInputAudio

Clears audio data stored at index.

If no data exists at index nothing will get cleared, but no error will be returned.

• request index refers a specific audio_data input record to clear.

• response error description of failure action to take.

Fields

index: i32

responder: InjectionClearInputAudioResponder

WaitUntilInputIsDone

Wait until injected inputs are done playing.

This function returns only when all injected audio tracks are complete.

This is intended to be called after calling StartInputInjection. If no tracks have been started, or all started tracks have already completed, then this function will immediately return without error.

• response error description of failure action to take.

Fields

responder: InjectionWaitUntilInputIsDoneResponder

StartInputInjection

Start injecting the incoming audio for this device, using the audio at index.

Before calling this, use WriteInputAudio to store audio data at the given index.

• request index refers a specific audio_data input record to play on the virtual microphone.

• response error description of failure action to take.

Fields

index: i32

responder: InjectionStartInputInjectionResponder

StopInputInjection

Stop injecting audio data.

This stops playing all injected tracks.

This is intended to be called after calling StartInputInjection. If no tracks have been started, or if all started tracks have already completed, then this function will immediately return without error.

• response error description of failure action to take.

Fields

responder: InjectionStopInputInjectionResponder

#[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: InjectionControlHandle

method_type: MethodType

Implementations

impl InjectionRequest

pub fn into_write_input_audio( self, ) -> Option<(i32, Socket, InjectionControlHandle)>

pub fn into_get_input_audio_size( self, ) -> Option<(i32, InjectionGetInputAudioSizeResponder)>

pub fn into_clear_input_audio( self, ) -> Option<(i32, InjectionClearInputAudioResponder)>

pub fn into_wait_until_input_is_done( self, ) -> Option<InjectionWaitUntilInputIsDoneResponder>

pub fn into_start_input_injection( self, ) -> Option<(i32, InjectionStartInputInjectionResponder)>

pub fn into_stop_input_injection( self, ) -> Option<InjectionStopInputInjectionResponder>

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

Name of the method defined in FIDL

Trait Implementations

impl Debug for InjectionRequest

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

Formats the value using the given formatter.