Struct MPSGraphConvolution2DOpDescriptor 

pub struct MPSGraphConvolution2DOpDescriptor { /* private fields */ }

Available on crate features MPSGraphConvolutionOps and MPSGraphCore only.

A class that describes the properties of a 2D-convolution operator.

Use an instance of this class is to add a 2D-convolution operator with the desired properties to the graph.

See also Apple’s documentation

Implementations

impl MPSGraphConvolution2DOpDescriptor

pub unsafe fn strideInX(&self) -> NSUInteger

The scale that maps x-coordinate of the destination to x-coordinate of the source.

Source x-coordinate, sx is computed from destination x-coordinate, dx as sx = strideInX*dx. Default value is 1.

pub unsafe fn setStrideInX(&self, stride_in_x: NSUInteger)

Setter for strideInX.

pub unsafe fn strideInY(&self) -> NSUInteger

The scale that maps y-coordinate of the destination to y-coordinate of the source.

Source y-coordinate, sy is computed from destination y-coordinate, dy as sy = strideInY*dy. Default value is 1.

pub unsafe fn setStrideInY(&self, stride_in_y: NSUInteger)

Setter for strideInY.

pub unsafe fn dilationRateInX(&self) -> NSUInteger

The amount by which the weights tensor expands in the x-direction.

The weights tensor is dilated by inserting dilationRateInX-1 zeros between consecutive values in x-dimension. Dilated weights tensor width is (dilationRateInX-1)*kernelWidth+1. Default value is 1.

pub unsafe fn setDilationRateInX(&self, dilation_rate_in_x: NSUInteger)

Setter for dilationRateInX.

pub unsafe fn dilationRateInY(&self) -> NSUInteger

The amount by which the weights tensor expands in the y-direction.

The weights tensor is dilated by inserting dilationRateInY-1 zeros between consecutive values in y-dimension. Dilated weights tensor width is (dilationRateInY-1)*kernelHeight+1. Default value is 1.

pub unsafe fn setDilationRateInY(&self, dilation_rate_in_y: NSUInteger)

Setter for dilationRateInY.

pub unsafe fn paddingLeft(&self) -> NSUInteger

The number of zeros added on the left side of the source tensor.

pub unsafe fn setPaddingLeft(&self, padding_left: NSUInteger)

Setter for paddingLeft.

pub unsafe fn paddingRight(&self) -> NSUInteger

The number of zeros added on the right side of the source tensor.

pub unsafe fn setPaddingRight(&self, padding_right: NSUInteger)

Setter for paddingRight.

pub unsafe fn paddingTop(&self) -> NSUInteger

The number of zeros added at the top of the source tensor.

pub unsafe fn setPaddingTop(&self, padding_top: NSUInteger)

Setter for paddingTop.

pub unsafe fn paddingBottom(&self) -> NSUInteger

The number of zeros added at the bottom of the source tensor.

pub unsafe fn setPaddingBottom(&self, padding_bottom: NSUInteger)

Setter for paddingBottom.

pub unsafe fn paddingStyle(&self) -> MPSGraphPaddingStyle

The type of padding applied to the source tensor.

If paddingStyle is MPSGraphPaddingStyleExplicit, paddingLeft, laddingRight, paddingTop, and paddingBottom must to be specified. For all other padding styles, framework compute these values so you dont need to provide these values.

pub unsafe fn setPaddingStyle(&self, padding_style: MPSGraphPaddingStyle)

Setter for paddingStyle.

pub unsafe fn dataLayout(&self) -> MPSGraphTensorNamedDataLayout

The named layout of data in the source tensor.

It defines the order of named dimensions (Batch, Channel, Height, Width). The convolution operation uses this to interpret data in the source tensor. For example, if dataLayout is MPSGraphTensorNamedDataLayoutNCHW, frameork interprets data in source tensor as batch x channels x height x width with width as fastest moving dimension.

pub unsafe fn setDataLayout(&self, data_layout: MPSGraphTensorNamedDataLayout)

Setter for dataLayout.

pub unsafe fn weightsLayout(&self) -> MPSGraphTensorNamedDataLayout

The named layout of data in the weights tensor.

It defines the order of named dimensions (Output channels, Input channels, Kernel height, Kernel width). The convolution operation uses this to interpret data in the weights tensor. For example, if weightsLayout is MPSGraphTensorNamedDataLayoutOIHW, frameork interprets data in weights tensor as outputChannels x inputChannels x kernelHeight x kernelWidth with kernelWidth as fastest moving dimension.

pub unsafe fn setWeightsLayout( &self, weights_layout: MPSGraphTensorNamedDataLayout, )

Setter for weightsLayout.

pub unsafe fn groups(&self) -> NSUInteger

The number of partitions of the input and output channels.

The convolution operation divides input and output channels in groups partitions. input channels in a group or partition are only connected to output channels in corresponding group. Number of weights the convolution needs is outputFeatureChannels x inputFeatureChannels/groups x kernelWidth x kernelHeight

pub unsafe fn setGroups(&self, groups: NSUInteger)

Setter for groups.

pub unsafe fn descriptorWithStrideInX_strideInY_dilationRateInX_dilationRateInY_groups_paddingLeft_paddingRight_paddingTop_paddingBottom_paddingStyle_dataLayout_weightsLayout( stride_in_x: NSUInteger, stride_in_y: NSUInteger, dilation_rate_in_x: NSUInteger, dilation_rate_in_y: NSUInteger, groups: NSUInteger, padding_left: NSUInteger, padding_right: NSUInteger, padding_top: NSUInteger, padding_bottom: NSUInteger, padding_style: MPSGraphPaddingStyle, data_layout: MPSGraphTensorNamedDataLayout, weights_layout: MPSGraphTensorNamedDataLayout, ) -> Option<Retained<Self>>

Creates a convolution descriptor with given values for parameters.

• Parameters:
• strideInX: See strideInX property.
• strideInY: See strideInY property.
• dilationRateInX: See dilationRateInX property.
• dilationRateInY: See dilationRateInY property.
• groups: See groups property.
• paddingLeft: See paddingLeft property.
• paddingRight: See paddingRight property.
• paddingTop: See paddingTop property.
• paddingBottom: See paddingBottom property.
• paddingStyle: See paddingStyle property.
• dataLayout: See dataLayout property.
• weightsLayout: See weightsLayout property.
• Returns: The MPSGraphConvolution2DOpDescriptor on autoreleasepool.

pub unsafe fn descriptorWithStrideInX_strideInY_dilationRateInX_dilationRateInY_groups_paddingStyle_dataLayout_weightsLayout( stride_in_x: NSUInteger, stride_in_y: NSUInteger, dilation_rate_in_x: NSUInteger, dilation_rate_in_y: NSUInteger, groups: NSUInteger, padding_style: MPSGraphPaddingStyle, data_layout: MPSGraphTensorNamedDataLayout, weights_layout: MPSGraphTensorNamedDataLayout, ) -> Option<Retained<Self>>

Creates a convolution descriptor with given values for parameters.

• Parameters:
• strideInX: See strideInX property.
• strideInY: See strideInY property.
• dilationRateInX: See dilationRateInX property.
• dilationRateInY: See dilationRateInY property.
• groups: See groups property.
• paddingStyle: See paddingStyle property.
• dataLayout: See dataLayout property.
• weightsLayout: See weightsLayout property.
• Returns: The MPSGraphConvolution2DOpDescriptor on autoreleasepool.

pub unsafe fn setExplicitPaddingWithPaddingLeft_paddingRight_paddingTop_paddingBottom( &self, padding_left: NSUInteger, padding_right: NSUInteger, padding_top: NSUInteger, padding_bottom: NSUInteger, )

Sets the left, right, top, and bottom padding values.

• Parameters:
• paddingLeft: See paddingLeft property.
• paddingRight: See paddingRight property.
• paddingTop: See paddingTop property.
• paddingBottom: See paddingBottom property.

impl MPSGraphConvolution2DOpDescriptor

Methods declared on superclass NSObject.

pub unsafe fn init(this: Allocated<Self>) -> Retained<Self>

pub unsafe fn new() -> Retained<Self>

Methods from Deref<Target = NSObject>

pub fn doesNotRecognizeSelector(&self, sel: Sel) -> !

Handle messages the object doesn’t recognize.

See Apple’s documentation for details.

Methods from Deref<Target = AnyObject>

pub fn class(&self) -> &'static AnyClass

Dynamically find the class of this object.

Panics

May panic if the object is invalid (which may be the case for objects returned from unavailable init/new methods).

Example

Check that an instance of NSObject has the precise class NSObject.

use objc2::ClassType;
use objc2::runtime::NSObject;

let obj = NSObject::new();
assert_eq!(obj.class(), NSObject::class());

pub unsafe fn get_ivar<T>(&self, name: &str) -> &T

where T: Encode,

👎Deprecated: this is difficult to use correctly, use Ivar::load instead.

Use Ivar::load instead.

Safety

The object must have an instance variable with the given name, and it must be of type T.

See Ivar::load_ptr for details surrounding this.

pub fn downcast_ref<T>(&self) -> Option<&T>

where T: DowncastTarget,

Attempt to downcast the object to a class of type T.

This is the reference-variant. Use Retained::downcast if you want to convert a retained object to another type.

Mutable classes

Some classes have immutable and mutable variants, such as NSString and NSMutableString.

When some Objective-C API signature says it gives you an immutable class, it generally expects you to not mutate that, even though it may technically be mutable “under the hood”.

So using this method to convert a NSString to a NSMutableString, while not unsound, is generally frowned upon unless you created the string yourself, or the API explicitly documents the string to be mutable.

See Apple’s documentation on mutability and on isKindOfClass: for more details.

Generic classes

Objective-C generics are called “lightweight generics”, and that’s because they aren’t exposed in the runtime. This makes it impossible to safely downcast to generic collections, so this is disallowed by this method.

You can, however, safely downcast to generic collections where all the type-parameters are AnyObject.

Panics

This works internally by calling isKindOfClass:. That means that the object must have the instance method of that name, and an exception will be thrown (if CoreFoundation is linked) or the process will abort if that is not the case. In the vast majority of cases, you don’t need to worry about this, since both root objects NSObject and NSProxy implement this method.

Examples

Cast an NSString back and forth from NSObject.

use objc2::rc::Retained;
use objc2_foundation::{NSObject, NSString};

let obj: Retained<NSObject> = NSString::new().into_super();
let string = obj.downcast_ref::<NSString>().unwrap();
// Or with `downcast`, if we do not need the object afterwards
let string = obj.downcast::<NSString>().unwrap();

Try (and fail) to cast an NSObject to an NSString.

use objc2_foundation::{NSObject, NSString};

let obj = NSObject::new();
assert!(obj.downcast_ref::<NSString>().is_none());

Try to cast to an array of strings.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);
// This is invalid and doesn't type check.
let arr = arr.downcast_ref::<NSArray<NSString>>();

This fails to compile, since it would require enumerating over the array to ensure that each element is of the desired type, which is a performance pitfall.

Downcast when processing each element instead.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);

for elem in arr {
    if let Some(data) = elem.downcast_ref::<NSString>() {
        // handle `data`
    }
}

Trait Implementations

impl AsRef<AnyObject> for MPSGraphConvolution2DOpDescriptor

fn as_ref(&self) -> &AnyObject

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<MPSGraphConvolution2DOpDescriptor> for MPSGraphConvolution2DOpDescriptor

fn as_ref(&self) -> &Self

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<MPSGraphObject> for MPSGraphConvolution2DOpDescriptor

fn as_ref(&self) -> &MPSGraphObject

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<NSObject> for MPSGraphConvolution2DOpDescriptor

fn as_ref(&self) -> &NSObject

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<AnyObject> for MPSGraphConvolution2DOpDescriptor

fn borrow(&self) -> &AnyObject

Immutably borrows from an owned value.

impl Borrow<MPSGraphObject> for MPSGraphConvolution2DOpDescriptor

fn borrow(&self) -> &MPSGraphObject

Immutably borrows from an owned value.

impl Borrow<NSObject> for MPSGraphConvolution2DOpDescriptor

fn borrow(&self) -> &NSObject

Immutably borrows from an owned value.

impl ClassType for MPSGraphConvolution2DOpDescriptor

const NAME: &'static str = "MPSGraphConvolution2DOpDescriptor"

The name of the Objective-C class that this type represents.

type Super = MPSGraphObject

The superclass of this class.

type ThreadKind = <<MPSGraphConvolution2DOpDescriptor as ClassType>::Super as ClassType>::ThreadKind

Whether the type can be used from any thread, or from only the main thread.

fn class() -> &'static AnyClass

Get a reference to the Objective-C class that this type represents.

fn as_super(&self) -> &Self::Super

Get an immutable reference to the superclass.

impl CopyingHelper for MPSGraphConvolution2DOpDescriptor

type Result = MPSGraphConvolution2DOpDescriptor

The immutable counterpart of the type, or Self if the type has no immutable counterpart.

impl Debug for MPSGraphConvolution2DOpDescriptor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Deref for MPSGraphConvolution2DOpDescriptor

type Target = MPSGraphObject

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Hash for MPSGraphConvolution2DOpDescriptor

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for MPSGraphConvolution2DOpDescriptor

fn retain(&self) -> Retained<Self>

where Self: Sized,

Increment the reference count of the receiver.

impl NSCopying for MPSGraphConvolution2DOpDescriptor

fn copy(&self) -> Retained<Self::Result>

where Self: Sized + Message + CopyingHelper,

Returns a new instance that’s a copy of the receiver.

unsafe fn copyWithZone(&self, zone: *mut NSZone) -> Retained<Self::Result>

where Self: Sized + Message + CopyingHelper,

Returns a new instance that’s a copy of the receiver.

impl NSObjectProtocol for MPSGraphConvolution2DOpDescriptor

fn isEqual(&self, other: Option<&AnyObject>) -> bool

where Self: Sized + Message,

Check whether the object is equal to an arbitrary other object.

fn hash(&self) -> usize

where Self: Sized + Message,

An integer that can be used as a table address in a hash table structure.

fn isKindOfClass(&self, cls: &AnyClass) -> bool

where Self: Sized + Message,

Check if the object is an instance of the class, or one of its subclasses.

fn is_kind_of<T>(&self) -> bool

where T: ClassType, Self: Sized + Message,

👎Deprecated: use isKindOfClass directly, or cast your objects with AnyObject::downcast_ref

Check if the object is an instance of the class type, or one of its subclasses.

fn isMemberOfClass(&self, cls: &AnyClass) -> bool

where Self: Sized + Message,

Check if the object is an instance of a specific class, without checking subclasses.

fn respondsToSelector(&self, aSelector: Sel) -> bool

where Self: Sized + Message,

Check whether the object implements or inherits a method with the given selector.

fn conformsToProtocol(&self, aProtocol: &AnyProtocol) -> bool

where Self: Sized + Message,

Check whether the object conforms to a given protocol.

fn description(&self) -> Retained<NSObject>

where Self: Sized + Message,

A textual representation of the object.

fn debugDescription(&self) -> Retained<NSObject>

where Self: Sized + Message,

A textual representation of the object to use when debugging.

fn isProxy(&self) -> bool

where Self: Sized + Message,

Check whether the receiver is a subclass of the NSProxy root class instead of the usual NSObject.

fn retainCount(&self) -> usize

where Self: Sized + Message,

The reference count of the object.

impl PartialEq for MPSGraphConvolution2DOpDescriptor

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl RefEncode for MPSGraphConvolution2DOpDescriptor

const ENCODING_REF: Encoding = <MPSGraphObject as ::objc2::RefEncode>::ENCODING_REF

The Objective-C type-encoding for a reference of this type.

impl DowncastTarget for MPSGraphConvolution2DOpDescriptor

impl Eq for MPSGraphConvolution2DOpDescriptor