Package apple.metalperformanceshadersgraph

Class MPSGraphFFTDescriptor

  • All Implemented Interfaces:
    NSCopying, NSObject
    public class MPSGraphFFTDescriptor
extends MPSGraphObject
implements NSCopying
    This class defines parameters for a fast Fourier transform (FFT) operation. Use this descriptor with ``MPSGraph/fastFourierTransformWithTensor:axes:descriptor:name:``, ``MPSGraph/realToHermiteanFFTWithTensor:axesTensor:descriptor:name:`` and ``MPSGraph/HermiteanToRealFFTWithTensor:axesTensor:descriptor:name:`` methods. API-Since: 17.0

    • Constructor Detail

      • MPSGraphFFTDescriptor

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

    • Method Detail

      • accessInstanceVariablesDirectly

        public static boolean accessInstanceVariablesDirectly()

      • allocWithZone

        public static MPSGraphFFTDescriptor allocWithZone​(org.moe.natj.general.ptr.VoidPtr zone)

      • automaticallyNotifiesObserversForKey

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

      • cancelPreviousPerformRequestsWithTarget

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

      • cancelPreviousPerformRequestsWithTargetSelectorObject

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

      • classFallbacksForKeyedArchiver

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

      • classForKeyedUnarchiver

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

      • copyWithZone

        @NotNull
public @NotNull java.lang.Object copyWithZone​(@Nullable
                                              @Nullable org.moe.natj.general.ptr.VoidPtr zone)
        Specified by:
        copyWithZone in interface NSCopying

      • debugDescription_static

        public static java.lang.String debugDescription_static()

      • description_static

        public static java.lang.String description_static()

      • descriptor

        public static MPSGraphFFTDescriptor descriptor()
        Creates a fast Fourier transform descriptor with default parameter values.

      • hash_static

        public static long hash_static()

      • instanceMethodSignatureForSelector

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

      • instancesRespondToSelector

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

      • inverse

        public boolean inverse()
        A boolean-valued parameter that defines the phase factor sign for Fourier transforms. When set to `YES` MPSGraph uses the positive phase factor: `exp(+i 2Pi mu nu / n)`, when computing the (inverse) Fourier transform. Otherwise MPSGraph uses the negative phase factor: `exp(-i 2Pi mu nu / n)`, when computing the Fourier transform. Default value: `NO`.

      • isSubclassOfClass

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

      • keyPathsForValuesAffectingValueForKey

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

      • resolveClassMethod

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

      • resolveInstanceMethod

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

      • roundToOddHermitean

        public boolean roundToOddHermitean()
        A parameter which controls how MPSGraph rounds the output tensor size for a Hermitean-to-real Fourier transform. If set to `YES` then MPSGraph rounds the last output dimension of the result tensor in ``MPSGraph/HermiteanToRealFFTWithTensor:axesTensor:descriptor:name:`` to an odd value. Has no effect in the other Fourier transform operations. Default value: `NO`.

      • scalingMode

        public long scalingMode()
        The scaling mode of the FFT operation. Note that the scaling mode is independent from the phase factor. Default value: `MPSGraphFFTScalingModeNone`.

      • setInverse

        public void setInverse​(boolean value)
        A boolean-valued parameter that defines the phase factor sign for Fourier transforms. When set to `YES` MPSGraph uses the positive phase factor: `exp(+i 2Pi mu nu / n)`, when computing the (inverse) Fourier transform. Otherwise MPSGraph uses the negative phase factor: `exp(-i 2Pi mu nu / n)`, when computing the Fourier transform. Default value: `NO`.

      • setRoundToOddHermitean

        public void setRoundToOddHermitean​(boolean value)
        A parameter which controls how MPSGraph rounds the output tensor size for a Hermitean-to-real Fourier transform. If set to `YES` then MPSGraph rounds the last output dimension of the result tensor in ``MPSGraph/HermiteanToRealFFTWithTensor:axesTensor:descriptor:name:`` to an odd value. Has no effect in the other Fourier transform operations. Default value: `NO`.

      • setScalingMode

        public void setScalingMode​(long value)
        The scaling mode of the FFT operation. Note that the scaling mode is independent from the phase factor. Default value: `MPSGraphFFTScalingModeNone`.

      • setVersion_static

        public static void setVersion_static​(long aVersion)

      • superclass_static

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

      • useStoredAccessor

        @Deprecated
public static boolean useStoredAccessor()
        Deprecated.

      • version_static

        public static long version_static()