Added in API level 23

VideoProvider

abstract class VideoProvider
kotlin.Any
   ↳ android.telecom.Connection.VideoProvider

Provides a means of controlling the video session associated with a Connection.

Implementations create a custom subclass of VideoProvider and the ConnectionService creates an instance sets it on the Connection using Connection#setVideoProvider(VideoProvider). Any connection which supports video should set the VideoProvider.

The VideoProvider serves two primary purposes: it provides a means for Telecom and InCallService implementations to issue requests related to the video session; it provides a means for the ConnectionService to report events and information related to the video session to Telecom and the InCallService implementations.

InCallService implementations interact with the VideoProvider via android.telecom.InCallService.VideoCall.

Summary

Constants
static Int

A camera failure has occurred for the selected camera.
static Int

Session event raised by Telecom when android.telecom.InCallService.VideoCall#setCamera(String) is called and the caller does not have the necessary android.Manifest.permission#CAMERA permission.
static Int

Issued after SESSION_EVENT_CAMERA_FAILURE when the camera is once again ready for operation.
static Int

Video is not being received (no protocol pause was issued).
static Int

Video reception has resumed after a SESSION_EVENT_RX_PAUSE.
static Int

Video transmission has begun.
static Int

Video transmission has stopped.
static Int

Session modify request failed.
static Int

Session modify request ignored due to invalid parameters.
static Int

Session modify request rejected by remote user.
static Int

Session modify request was successful.
static Int

Session modify request timed out.
Public constructors

Public methods
open Unit

Used to inform listening InCallService implementations when the capabilities of the current camera have changed.
open Unit
changePeerDimensions(width: Int, height: Int)

Used to inform listening InCallService implementations when the dimensions of the peer's video have changed.
open Unit
changeVideoQuality(videoQuality: Int)

Used to inform listening InCallService implementations when the video quality of the call has changed.
open Unit

Used to inform listening InCallService implementations when the VideoProvider reports a call session event.
abstract Unit

Issues a request to the VideoProvider to retrieve the camera capabilities.
abstract Unit

Issues a request to the VideoProvider to retrieve the current data usage for the video component of the current Connection.
abstract Unit

Issues a request to modify the properties of the current video session.
abstract Unit

Provides a response to a request to change the current video session properties.
abstract Unit
onSetCamera(cameraId: String!)

Sets the camera to be used for the outgoing video.
abstract Unit

Sets the device orientation, in degrees.
abstract Unit

Sets the surface to be used for displaying the video received from the remote device.
abstract Unit

Provides the VideoProvider with the Uri of an image to be displayed to the peer device when the video signal is paused.
abstract Unit

Sets the surface to be used for displaying a preview of what the user's camera is currently capturing.
abstract Unit
onSetZoom(value: Float)

Sets the camera zoom ratio.
open Unit

Used to inform listening InCallService implementations when the VideoProvider receives a session modification request.
open Unit
receiveSessionModifyResponse(status: Int, requestedProfile: VideoProfile!, responseProfile: VideoProfile!)

Used to inform listening InCallService implementations when the VideoProvider receives a response to a session modification request.
open Unit
setCallDataUsage(dataUsage: Long)

Used to inform listening InCallService implementations when the data usage of the video associated with the current Connection has changed.

Constants

SESSION_EVENT_CAMERA_FAILURE

Added in API level 23
static val SESSION_EVENT_CAMERA_FAILURE: Int

A camera failure has occurred for the selected camera. The VideoProvider can use this as a cue to inform the user the camera is not available.

Value: 5

SESSION_EVENT_CAMERA_PERMISSION_ERROR

Added in API level 26
static val SESSION_EVENT_CAMERA_PERMISSION_ERROR: Int

Session event raised by Telecom when android.telecom.InCallService.VideoCall#setCamera(String) is called and the caller does not have the necessary android.Manifest.permission#CAMERA permission.

Value: 7

SESSION_EVENT_CAMERA_READY

Added in API level 23
static val SESSION_EVENT_CAMERA_READY: Int

Issued after SESSION_EVENT_CAMERA_FAILURE when the camera is once again ready for operation. The VideoProvider can use this as a cue to inform the user that the camera has become available again.

Value: 6

SESSION_EVENT_RX_PAUSE

Added in API level 23
static val SESSION_EVENT_RX_PAUSE: Int

Video is not being received (no protocol pause was issued).

Value: 1

SESSION_EVENT_RX_RESUME

Added in API level 23
static val SESSION_EVENT_RX_RESUME: Int

Video reception has resumed after a SESSION_EVENT_RX_PAUSE.

Value: 2

SESSION_EVENT_TX_START

Added in API level 23
static val SESSION_EVENT_TX_START: Int

Video transmission has begun. This occurs after a negotiated start of video transmission when the underlying protocol has actually begun transmitting video to the remote party.

Value: 3

SESSION_EVENT_TX_STOP

Added in API level 23
static val SESSION_EVENT_TX_STOP: Int

Video transmission has stopped. This occurs after a negotiated stop of video transmission when the underlying protocol has actually stopped transmitting video to the remote party.

Value: 4

SESSION_MODIFY_REQUEST_FAIL

Added in API level 23
static val SESSION_MODIFY_REQUEST_FAIL: Int

Session modify request failed.

Value: 2

SESSION_MODIFY_REQUEST_INVALID

Added in API level 23
static val SESSION_MODIFY_REQUEST_INVALID: Int

Session modify request ignored due to invalid parameters.

Value: 3

SESSION_MODIFY_REQUEST_REJECTED_BY_REMOTE

Added in API level 23
static val SESSION_MODIFY_REQUEST_REJECTED_BY_REMOTE: Int

Session modify request rejected by remote user.

Value: 5

SESSION_MODIFY_REQUEST_SUCCESS

Added in API level 23
static val SESSION_MODIFY_REQUEST_SUCCESS: Int

Session modify request was successful.

Value: 1

SESSION_MODIFY_REQUEST_TIMED_OUT

Added in API level 23
static val SESSION_MODIFY_REQUEST_TIMED_OUT: Int

Session modify request timed out.

Value: 4

Public constructors

VideoProvider

Added in API level 23
VideoProvider()

Public methods

changeCameraCapabilities

Added in API level 23
open fun changeCameraCapabilities(cameraCapabilities: VideoProfile.CameraCapabilities!): Unit

Used to inform listening InCallService implementations when the capabilities of the current camera have changed.

The VideoProvider should call this in response to VideoProvider#onRequestCameraCapabilities(), or when the current camera is changed via VideoProvider#onSetCamera(String).

Received by the InCallService via InCallService.VideoCall.Callback#onCameraCapabilitiesChanged(.

Parameters
cameraCapabilities VideoProfile.CameraCapabilities!: The new camera capabilities.

changePeerDimensions

Added in API level 23
open fun changePeerDimensions(
    width: Int, 
    height: Int
): Unit

Used to inform listening InCallService implementations when the dimensions of the peer's video have changed.

This could occur if, for example, the peer rotates their device, changing the aspect ratio of the video, or if the user switches between the back and front cameras.

Received by the InCallService via InCallService.VideoCall.Callback#onPeerDimensionsChanged(int, int).

Parameters
width Int: The updated peer video width.
height Int: The updated peer video height.

changeVideoQuality

Added in API level 23
open fun changeVideoQuality(videoQuality: Int): Unit

Used to inform listening InCallService implementations when the video quality of the call has changed.

Received by the InCallService via InCallService.VideoCall.Callback#onVideoQualityChanged(int).

Parameters
videoQuality Int: The updated video quality. Valid values: VideoProfile#QUALITY_HIGH, VideoProfile#QUALITY_MEDIUM, VideoProfile#QUALITY_LOW, VideoProfile#QUALITY_DEFAULT.

handleCallSessionEvent

Added in API level 23
open fun handleCallSessionEvent(event: Int): Unit

Used to inform listening InCallService implementations when the VideoProvider reports a call session event.

Received by the InCallService via InCallService.VideoCall.Callback#onCallSessionEvent(int).

Parameters
event Int: The event. Valid values are: VideoProvider#SESSION_EVENT_RX_PAUSE, VideoProvider#SESSION_EVENT_RX_RESUME, VideoProvider#SESSION_EVENT_TX_START, VideoProvider#SESSION_EVENT_TX_STOP, VideoProvider#SESSION_EVENT_CAMERA_FAILURE, VideoProvider#SESSION_EVENT_CAMERA_READY, VideoProvider#SESSION_EVENT_CAMERA_FAILURE.

onRequestCameraCapabilities

Added in API level 23
abstract fun onRequestCameraCapabilities(): Unit

Issues a request to the VideoProvider to retrieve the camera capabilities.

The VideoProvider should respond by communicating the capabilities of the chosen camera via VideoProvider#changeCameraCapabilities(VideoProfile.CameraCapabilities).

Sent from the InCallService via InCallService.VideoCall#requestCameraCapabilities().

onRequestConnectionDataUsage

Added in API level 23
abstract fun onRequestConnectionDataUsage(): Unit

Issues a request to the VideoProvider to retrieve the current data usage for the video component of the current Connection.

The VideoProvider should respond by communicating current data usage, in bytes, via VideoProvider#setCallDataUsage(long).

Sent from the InCallService via InCallService.VideoCall#requestCallDataUsage().

onSendSessionModifyRequest

Added in API level 23
abstract fun onSendSessionModifyRequest(
    fromProfile: VideoProfile!, 
    toProfile: VideoProfile!
): Unit

Issues a request to modify the properties of the current video session.

Example scenarios include: requesting an audio-only call to be upgraded to a bi-directional video call, turning on or off the user's camera, sending a pause signal when the InCallService is no longer the foreground application.

If the VideoProvider determines a request to be invalid, it should call receiveSessionModifyResponse(int,android.telecom.VideoProfile,android.telecom.VideoProfile) to report the invalid request back to the InCallService.

Where a request requires confirmation from the user of the peer device, the VideoProvider must communicate the request to the peer device and handle the user's response. receiveSessionModifyResponse(int,android.telecom.VideoProfile,android.telecom.VideoProfile) is used to inform the InCallService of the result of the request.

Sent from the InCallService via InCallService.VideoCall#sendSessionModifyRequest(VideoProfile).

Parameters
fromProfile VideoProfile!: The video profile prior to the request.
toProfile VideoProfile!: The video profile with the requested changes made.

onSendSessionModifyResponse

Added in API level 23
abstract fun onSendSessionModifyResponse(responseProfile: VideoProfile!): Unit

Provides a response to a request to change the current video session properties.

For example, if the peer requests and upgrade from an audio-only call to a bi-directional video call, could decline the request and keep the call as audio-only. In such a scenario, the responseProfile would have a video state of VideoProfile#STATE_AUDIO_ONLY. If the user had decided to accept the request, the video state would be VideoProfile#STATE_BIDIRECTIONAL.

Sent from the InCallService via InCallService.VideoCall#sendSessionModifyResponse(VideoProfile) in response to a InCallService.VideoCall.Callback#onSessionModifyRequestReceived(VideoProfile) callback.

Parameters
responseProfile VideoProfile!: The response video profile.

onSetCamera

Added in API level 23
abstract fun onSetCamera(cameraId: String!): Unit

Sets the camera to be used for the outgoing video.

The VideoProvider should respond by communicating the capabilities of the chosen camera via VideoProvider#changeCameraCapabilities(VideoProfile.CameraCapabilities).

Sent from the InCallService via InCallService.VideoCall#setCamera(String).

Parameters
cameraId String!: The id of the camera (use ids as reported by CameraManager#getCameraIdList()).

onSetDeviceOrientation

Added in API level 23
abstract fun onSetDeviceOrientation(rotation: Int): Unit

Sets the device orientation, in degrees. Assumes that a standard portrait orientation of the device is 0 degrees.

Sent from the InCallService via InCallService.VideoCall#setDeviceOrientation(int).

Parameters
rotation Int: The device orientation, in degrees.

onSetDisplaySurface

Added in API level 23
abstract fun onSetDisplaySurface(surface: Surface!): Unit

Sets the surface to be used for displaying the video received from the remote device.

Sent from the InCallService via InCallService.VideoCall#setDisplaySurface(Surface).

Parameters
surface Surface!: The Surface.

onSetPauseImage

Added in API level 23
abstract fun onSetPauseImage(uri: Uri!): Unit

Provides the VideoProvider with the Uri of an image to be displayed to the peer device when the video signal is paused.

Sent from the InCallService via InCallService.VideoCall#setPauseImage(Uri).

Parameters
uri Uri!: URI of image to display.

onSetPreviewSurface

Added in API level 23
abstract fun onSetPreviewSurface(surface: Surface!): Unit

Sets the surface to be used for displaying a preview of what the user's camera is currently capturing. When video transmission is enabled, this is the video signal which is sent to the remote device.

Sent from the InCallService via InCallService.VideoCall#setPreviewSurface(Surface).

Parameters
surface Surface!: The Surface.

onSetZoom

Added in API level 23
abstract fun onSetZoom(value: Float): Unit

Sets the camera zoom ratio.

Sent from the InCallService via InCallService.VideoCall#setZoom(float).

Parameters
value Float: The camera zoom ratio; for the current camera, should be a value in the range defined by android.hardware.camera2.CameraCharacteristics#CONTROL_ZOOM_RATIO_RANGE.

receiveSessionModifyRequest

Added in API level 23
open fun receiveSessionModifyRequest(videoProfile: VideoProfile!): Unit

Used to inform listening InCallService implementations when the VideoProvider receives a session modification request.

Received by the InCallService via InCallService.VideoCall.Callback#onSessionModifyRequestReceived(VideoProfile),

Parameters
videoProfile VideoProfile!: The requested video profile.

receiveSessionModifyResponse

Added in API level 23
open fun receiveSessionModifyResponse(
    status: Int, 
    requestedProfile: VideoProfile!, 
    responseProfile: VideoProfile!
): Unit

Used to inform listening InCallService implementations when the VideoProvider receives a response to a session modification request.

Received by the InCallService via InCallService.VideoCall.Callback#onSessionModifyResponseReceived(int,.

Parameters
status Int: Status of the session modify request. Valid values are VideoProvider#SESSION_MODIFY_REQUEST_SUCCESS, VideoProvider#SESSION_MODIFY_REQUEST_FAIL, VideoProvider#SESSION_MODIFY_REQUEST_INVALID, VideoProvider#SESSION_MODIFY_REQUEST_TIMED_OUT, VideoProvider#SESSION_MODIFY_REQUEST_REJECTED_BY_REMOTE
requestedProfile VideoProfile!: The original request which was sent to the peer device.
responseProfile VideoProfile!: The actual profile changes agreed to by the peer device.

setCallDataUsage

Added in API level 23
open fun setCallDataUsage(dataUsage: Long): Unit

Used to inform listening InCallService implementations when the data usage of the video associated with the current Connection has changed.

This could be in response to a preview request via onRequestConnectionDataUsage(), or as a periodic update by the VideoProvider. Where periodic updates of data usage are provided, they should be provided at most for every 1 MB of data transferred and no more than once every 10 sec.

Received by the InCallService via InCallService.VideoCall.Callback#onCallDataUsageChanged(long).

Parameters
dataUsage Long: The updated data usage (in bytes). Reported as the cumulative bytes used since the start of the call.