This protocol defines an interface for the delegates of FaceLandmarker face to receive
results of performing asynchronous face detection on images (i.e, when runningMode =
.liveStream).
The delegate of FaceLandmarker must adopt FaceLandmarkerLiveStreamDelegate protocol.
The methods in this protocol are optional.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-05-08 UTC."],[],[],null,["# MediaPipeTasksVision Framework Reference\n\nFaceLandmarkerLiveStreamDelegate\n================================\n\n protocol FaceLandmarkerLiveStreamDelegate : NSObjectProtocol\n\nThis protocol defines an interface for the delegates of [FaceLandmarker](../Classes/FaceLandmarker.html) face to receive\nresults of performing asynchronous face detection on images (i.e, when `runningMode` =\n`.liveStream`).\n\nThe delegate of [FaceLandmarker](../Classes/FaceLandmarker.html) must adopt `FaceLandmarkerLiveStreamDelegate` protocol.\nThe methods in this protocol are optional.\n- `\n ``\n ``\n `\n\n ### [faceLandmarker(_:didFinishDetection:timestampInMilliseconds:error:)](#/c:objc(pl)MPPFaceLandmarkerLiveStreamDelegate(im)faceLandmarker:didFinishDetectionWithResult:timestampInMilliseconds:error:)\n\n `\n ` \n This method notifies a delegate that the results of asynchronous face detection of\n an image submitted to the [FaceLandmarker](../Classes/FaceLandmarker.html) is available.\n\n This method is called on a private serial dispatch queue created by the [FaceLandmarker](../Classes/FaceLandmarker.html)\n for performing the asynchronous delegates calls. \n\n #### Declaration\n\n Swift \n\n func faceLandmarker(_ faceLandmarker: MPPFaceLandmarker, didFinishDetection result: ../Classes/FaceLandmarkerResult.html?, timestampInMilliseconds: Int, error: Error?)\n\n #### Parameters\n\n |---------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n | ` `*faceLandmarker*` ` | The face landmarker which performed the face landmark detctions. This is useful to test equality when there are multiple instances of [FaceLandmarker](../Classes/FaceLandmarker.html). |\n | ` `*result*` ` | The [FaceLandmarkerResult](../Classes/FaceLandmarkerResult.html) object that contains a list of landmarks. |\n | ` `*timestampInMilliseconds*` ` | The timestamp (in milliseconds) which indicates when the input image was sent to the face detector. |\n | ` `*error*` ` | An optional error parameter populated when there is an error in performing face detection on the input live stream image data. |"]]
