Package apple.vision

Class VNStatefulRequest

  • All Implemented Interfaces:
    NSCopying, NSObject
    Direct Known Subclasses:
    VNDetectTrajectoriesRequest
    public class VNStatefulRequest
extends VNImageBasedRequest
    A request that builds evidence over time by being reused on multiple images. The request requires the use of CMSampleBuffers with timestamps as input; otherwise, a VNErrorTimeStampNotFound error will be returned. VNStatefulRequest is used as a base class of other requests, so no objects of this class should be created directly.

    • Constructor Detail

      • VNStatefulRequest

        protected VNStatefulRequest​(org.moe.natj.general.Pointer peer)

    • Method Detail

      • accessInstanceVariablesDirectly

        public static boolean accessInstanceVariablesDirectly()

      • allocWithZone

        public static java.lang.Object allocWithZone​(org.moe.natj.general.ptr.VoidPtr zone)

      • automaticallyNotifiesObserversForKey

        public static boolean automaticallyNotifiesObserversForKey​(java.lang.String key)

      • cancelPreviousPerformRequestsWithTarget

        public static void cancelPreviousPerformRequestsWithTarget​(java.lang.Object aTarget)

      • cancelPreviousPerformRequestsWithTargetSelectorObject

        public static void cancelPreviousPerformRequestsWithTargetSelectorObject​(java.lang.Object aTarget,
                                                                         org.moe.natj.objc.SEL aSelector,
                                                                         java.lang.Object anArgument)

      • classFallbacksForKeyedArchiver

        public static NSArray<java.lang.String> classFallbacksForKeyedArchiver()

      • classForKeyedUnarchiver

        public static org.moe.natj.objc.Class classForKeyedUnarchiver()

      • currentRevision

        public static long currentRevision()

      • debugDescription_static

        public static java.lang.String debugDescription_static()

      • defaultRevision

        public static long defaultRevision()

      • description_static

        public static java.lang.String description_static()

      • frameAnalysisSpacing

        public CMTime frameAnalysisSpacing()
        The reciprocal of maximum rate at which buffers will be processed. The request will not process buffers that fall within the requestFrameAnalysisSpacing after it has performed the analysis. The analysis is not done by wall time but by analysis of of the time stamps of the samplebuffers being processed.

      • hash_static

        public static long hash_static()

      • initWithFrameAnalysisSpacingCompletionHandler

        public VNStatefulRequest initWithFrameAnalysisSpacingCompletionHandler​(CMTime frameAnalysisSpacing,
                                                                       VNStatefulRequest.Block_initWithFrameAnalysisSpacingCompletionHandler completionHandler)
        Create a new video-based stateful request.
        Parameters:
        frameAnalysisSpacing - The reciprocal of maximum rate at which buffers will be processed. The request will not process buffers that fall within the frameAnalysisSpacing after it has performed the analysis. The analysis is not done by wall time but by analysis of of the time stamps of the samplebuffers being processed.
        completionHandler - The block to be invoked after the request has completed its processing. The completion handler gets executed on the same dispatch queue as the request being executed.

      • instanceMethodSignatureForSelector

        public static NSMethodSignature instanceMethodSignatureForSelector​(org.moe.natj.objc.SEL aSelector)

      • instancesRespondToSelector

        public static boolean instancesRespondToSelector​(org.moe.natj.objc.SEL aSelector)

      • isSubclassOfClass

        public static boolean isSubclassOfClass​(org.moe.natj.objc.Class aClass)

      • keyPathsForValuesAffectingValueForKey

        public static NSSet<java.lang.String> keyPathsForValuesAffectingValueForKey​(java.lang.String key)

      • minimumLatencyFrameCount

        public long minimumLatencyFrameCount()
        The minimum number of frames that the request has to process on before reporting back any observation. This information is provided by the request once initialized with its required paramters. Video based request often need a minimum number of frames before they can report back any observation. An example would be that a movement detection requires at least 5 frames to be detected. The minimumLatencyFrameCount for that request would report 5 and only after 5 frames have been processed an observation would be returned in the results. This latency is indicative of how responsive a request is in respect to the incoming data.

      • new_objc

        public static java.lang.Object new_objc()

      • requestFrameAnalysisSpacing

        public CMTime requestFrameAnalysisSpacing()

      • resolveClassMethod

        public static boolean resolveClassMethod​(org.moe.natj.objc.SEL sel)

      • resolveInstanceMethod

        public static boolean resolveInstanceMethod​(org.moe.natj.objc.SEL sel)

      • setVersion_static

        public static void setVersion_static​(long aVersion)

      • superclass_static

        public static org.moe.natj.objc.Class superclass_static()

      • supportedRevisions

        public static NSIndexSet supportedRevisions()

      • version_static

        public static long version_static()