Package apple.metalperformanceshaders

Class MPSImageFindKeypoints

  • All Implemented Interfaces:
    NSCoding, NSCopying, NSSecureCoding, NSObject
    public class MPSImageFindKeypoints
extends MPSKernel
    MPSImageFindKeypoints The MPSImageFindKeypoints kernel is used to find a list of keypoints whose values are >= minimumPixelThresholdValue in MPSImageKeypointRangeInfo. The keypoints are generated for a specified region in the image. The pixel format of the source image must be MTLPixelFormatR8Unorm.

    • Constructor Detail

      • MPSImageFindKeypoints

        protected MPSImageFindKeypoints​(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()

      • debugDescription_static

        public static java.lang.String debugDescription_static()

      • description_static

        public static java.lang.String description_static()

      • encodeToCommandBufferSourceTextureRegionsNumberOfRegionsKeypointCountBufferKeypointCountBufferOffsetKeypointDataBufferKeypointDataBufferOffset

        public void encodeToCommandBufferSourceTextureRegionsNumberOfRegionsKeypointCountBufferKeypointCountBufferOffsetKeypointDataBufferKeypointDataBufferOffset​(MTLCommandBuffer commandBuffer,
                                                                                                                                                           MTLTexture source,
                                                                                                                                                           MTLRegion regions,
                                                                                                                                                           long numberOfRegions,
                                                                                                                                                           MTLBuffer keypointCountBuffer,
                                                                                                                                                           long keypointCountBufferOffset,
                                                                                                                                                           MTLBuffer keypointDataBuffer,
                                                                                                                                                           long keypointDataBufferOffset)
        Encode the filter to a command buffer using a MTLComputeCommandEncoder. The filter will not begin to execute until after the command buffer has been enqueued and committed.
        Parameters:
        commandBuffer - A valid MTLCommandBuffer.
        source - A valid MTLTexture containing the source image for the filter.
        regions - An array of rectangles that describe regions in the image. The list of keypoints is generated for each individual rectangle specifed.
        keypointCountBuffer - The list of keypoints for each specified region
        keypointCountBufferOffset - Byte offset into keypointCountBufferOffset buffer at which to write the keypoint results. Must be a multiple of 32 bytes.
        keypointDataBuffer - A valid MTLBuffer to receive the keypoint data results for each rectangle. The keypoint data for keypoints in each rectangle are stored consecutively. The keypoint data for each rectangle starts at the following offset: MPSImageKeypointRangeInfo.maximumKeyPoints * rectangle index
        keypointDataBufferOffset - Byte offset into keypointData buffer at which to write the keypoint results. Must be a multiple of 32 bytes.

      • hash_static

        public static long hash_static()

      • initWithCoderDevice

        public MPSImageFindKeypoints initWithCoderDevice​(NSCoder aDecoder,
                                                 java.lang.Object device)
        NSSecureCoding compatability While the standard NSSecureCoding/NSCoding method -initWithCoder: should work, since the file can't know which device your data is allocated on, we have to guess and may guess incorrectly. To avoid that problem, use initWithCoder:device instead.
        Overrides:
        initWithCoderDevice in class MPSKernel
        Parameters:
        aDecoder - The NSCoder subclass with your serialized MPSKernel
        device - The MTLDevice on which to make the MPSKernel
        Returns:
        A new MPSKernel object, or nil if failure.

      • initWithDevice

        public MPSImageFindKeypoints initWithDevice​(java.lang.Object device)
        Description copied from class: MPSKernel
        Standard init with default properties per filter type
        Overrides:
        initWithDevice in class MPSKernel
        Parameters:
        device - The device that the filter will be used on. May not be NULL.
        Returns:
        a pointer to the newly initialized object. This will fail, returning nil if the device is not supported. Devices must be MTLFeatureSet_iOS_GPUFamily2_v1 or later.

      • initWithDeviceInfo

        public MPSImageFindKeypoints initWithDeviceInfo​(MTLDevice device,
                                                MPSImageKeypointRangeInfo info)
        Specifies information to find keypoints in an image.
        Parameters:
        device - The device the filter will run on
        info - Pointer to the MPSImageKeypointRangeInfo struct
        Returns:
        A valid MPSImageFindKeypoints object or nil, if failure.

      • 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)

      • keypointRangeInfo

        public MPSImageKeypointRangeInfo keypointRangeInfo()
        [@property] keypointRangeInfo Return a structure describing the keypoint range info Returns a MPSImageKeypointRangeInfo structure

      • new_objc

        public static java.lang.Object new_objc()

      • 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()

      • supportsSecureCoding

        public static boolean supportsSecureCoding()

      • _supportsSecureCoding

        public boolean _supportsSecureCoding()
        Description copied from interface: NSSecureCoding
        This property must return YES on all classes that allow secure coding. Subclasses of classes that adopt NSSecureCoding and override initWithCoder: must also override this method and return YES. The Secure Coding Guide should be consulted when writing methods that decode data.
        Specified by:
        _supportsSecureCoding in interface NSSecureCoding
        Overrides:
        _supportsSecureCoding in class MPSKernel

      • version_static

        public static long version_static()