Struct DeviceWatcherProxy

pub struct DeviceWatcherProxy { /* private fields */ }

Implementations

impl DeviceWatcherProxy

pub fn new(channel: AsyncChannel) -> Self

Create a new Proxy for fuchsia.camera3/DeviceWatcher.

pub fn take_event_stream(&self) -> DeviceWatcherEventStream

Get a Stream of events from the remote end of the protocol.

Panics

Panics if the event stream was already taken.

pub fn watch_devices( &self, ) -> QueryResponseFut<Vec<WatchDevicesEvent>, DefaultFuchsiaResourceDialect>

Returns a list of available camera IDs when it has changed from the previously returned list of IDs, or when it is called by a client for the first time. The returned list may be empty, indicating no cameras are available. The IDs returned to the client will remain consistent with respect to the physical devices they represent for the duration of the client’s connection. Events will be sorted first by event type - existing, added, removed. Within each event type range, IDs will be provided in ascending order. Events are coalesced by the server, so a given ID will only appear once in each list of events.

Please note that it is entirely possible for the list returned to be temporarily empty even if the local camera hardware is hardwired (vs plug-in like USB). The empty list condition is temporary on such a platform.

Camera applications should tolerate an empty list returned, and attempt to retry the WatchDevices() call.

pub fn connect_to_device( &self, id: u64, request: ServerEnd<DeviceMarker>, ) -> Result<(), Error>

Acquires a camera interface for the given ID. If any clients already exist for this camera, the request is closed with the ZX_ERR_ALREADY_BOUND epitaph.

Trait Implementations

impl Clone for DeviceWatcherProxy

fn clone(&self) -> DeviceWatcherProxy

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DeviceWatcherProxy

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

Formats the value using the given formatter.

impl DeviceWatcherProxyInterface for DeviceWatcherProxy

type WatchDevicesResponseFut = QueryResponseFut<Vec<WatchDevicesEvent>>

fn watch_devices(&self) -> Self::WatchDevicesResponseFut

fn connect_to_device( &self, id: u64, request: ServerEnd<DeviceMarker>, ) -> Result<(), Error>

impl Proxy for DeviceWatcherProxy

type Protocol = DeviceWatcherMarker

The protocol which this Proxy controls.

fn from_channel(inner: AsyncChannel) -> Self

Create a proxy over the given channel.

fn into_channel(self) -> Result<AsyncChannel, Self>

Attempt to convert the proxy back into a channel.

fn as_channel(&self) -> &AsyncChannel

Get a reference to the proxy’s underlying channel.

fn into_client_end(self) -> Result<ClientEnd<Self::Protocol>, Self>

Attempt to convert the proxy back into a client end.

fn is_closed(&self) -> bool

Returns true if the proxy has received the PEER_CLOSED signal.

fn on_closed(&self) -> OnSignals<'_, Unowned<'_, Handle>>

Returns a future that completes when the proxy receives the PEER_CLOSED signal.