apple.avfoundation

Class AVCaptureVideoPreviewLayer

java.lang.Object

org.moe.natj.general.NativeObject

org.moe.natj.objc.ObjCObject

apple.NSObject

apple.quartzcore.CALayer

apple.avfoundation.AVCaptureVideoPreviewLayer

All Implemented Interfaces:

NSCoding, NSSecureCoding, NSObject, CAMediaTiming

public class AVCaptureVideoPreviewLayer
extends CALayer

AVCaptureVideoPreviewLayer

A CoreAnimation layer subclass for previewing the visual output of an AVCaptureSession.

An AVCaptureVideoPreviewLayer instance is a subclass of CALayer and is therefore suitable for insertion in a layer hierarchy as part of a graphical interface. One creates an AVCaptureVideoPreviewLayer instance with the capture session to be previewed, using +layerWithSession: or -initWithSession:. Using the @"videoGravity" property, one can influence how content is viewed relative to the layer bounds. On some hardware configurations, the orientation of the layer can be manipulated using @"orientation" and @"mirrored".

Nested Class Summary

Nested classes/interfaces inherited from class apple.NSObject

NSObject.Function_instanceMethodForSelector_ret, NSObject.Function_methodForSelector_ret

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AVCaptureVideoPreviewLayer(org.moe.natj.general.Pointer peer)

Method Summary

Modifier and Type	Method and Description
boolean	_supportsSecureCoding() This property must return YES on all classes that allow secure coding.
static boolean	accessInstanceVariablesDirectly()
static AVCaptureVideoPreviewLayer	alloc()
static AVCaptureVideoPreviewLayer	allocWithZone(org.moe.natj.general.ptr.VoidPtr zone)
boolean	automaticallyAdjustsMirroring() Deprecated.
static boolean	automaticallyNotifiesObserversForKey(java.lang.String key)
static void	cancelPreviousPerformRequestsWithTarget(java.lang.Object aTarget)
static void	cancelPreviousPerformRequestsWithTargetSelectorObject(java.lang.Object aTarget, org.moe.natj.objc.SEL aSelector, java.lang.Object anArgument)
CGPoint	captureDevicePointOfInterestForPoint(CGPoint pointInLayer) captureDevicePointOfInterestForPoint:
static NSArray<java.lang.String>	classFallbacksForKeyedArchiver()
static org.moe.natj.objc.Class	classForKeyedUnarchiver()
AVCaptureConnection	connection() [@property] connection
static double	cornerCurveExpansionFactor(java.lang.String curve)
static java.lang.String	debugDescription_static()
static CAAction	defaultActionForKey(java.lang.String event)
static java.lang.Object	defaultValueForKey(java.lang.String key)
static java.lang.String	description_static()
static long	hash_static()
AVCaptureVideoPreviewLayer	init() The designated initializer.
AVCaptureVideoPreviewLayer	initWithCoder(NSCoder coder) NS_DESIGNATED_INITIALIZER
AVCaptureVideoPreviewLayer	initWithLayer(java.lang.Object layer) This initializer is used by CoreAnimation to create shadow copies of layers, e.g.
AVCaptureVideoPreviewLayer	initWithSession(AVCaptureSession session) initWithSession:
AVCaptureVideoPreviewLayer	initWithSessionWithNoConnection(AVCaptureSession session) initWithSessionWithNoConnection:
static NSObject.Function_instanceMethodForSelector_ret	instanceMethodForSelector(org.moe.natj.objc.SEL aSelector)
static NSMethodSignature	instanceMethodSignatureForSelector(org.moe.natj.objc.SEL aSelector)
static boolean	instancesRespondToSelector(org.moe.natj.objc.SEL aSelector)
boolean	isMirrored() Deprecated.
boolean	isMirroringSupported() Deprecated.
boolean	isOrientationSupported() Deprecated.
boolean	isPreviewing() [@property] previewing
static boolean	isSubclassOfClass(org.moe.natj.objc.Class aClass)
static NSSet<java.lang.String>	keyPathsForValuesAffectingValueForKey(java.lang.String key)
static AVCaptureVideoPreviewLayer	layer()
static AVCaptureVideoPreviewLayer	layerWithSession(AVCaptureSession session) layerWithSession:
static AVCaptureVideoPreviewLayer	layerWithSessionWithNoConnection(AVCaptureSession session) layerWithSessionWithNoConnection:
CGRect	metadataOutputRectOfInterestForRect(CGRect rectInLayerCoordinates) metadataOutputRectOfInterestForRect:
static boolean	needsDisplayForKey(java.lang.String key)
static AVCaptureVideoPreviewLayer	new_objc()
long	orientation() Deprecated.
CGPoint	pointForCaptureDevicePointOfInterest(CGPoint captureDevicePointOfInterest) pointForCaptureDevicePointOfInterest:
CGRect	rectForMetadataOutputRectOfInterest(CGRect rectInMetadataOutputCoordinates) rectForMetadataOutputRectOfInterest:
static boolean	resolveClassMethod(org.moe.natj.objc.SEL sel)
static boolean	resolveInstanceMethod(org.moe.natj.objc.SEL sel)
AVCaptureSession	session() [@property] session
void	setAutomaticallyAdjustsMirroring(boolean value) Deprecated.
void	setMirrored(boolean value) Deprecated.
void	setOrientation(long value) Deprecated.
void	setSession(AVCaptureSession value) [@property] session
void	setSessionWithNoConnection(AVCaptureSession session) method setSessionWithNoConnection:
static void	setVersion_static(long aVersion)
void	setVideoGravity(java.lang.String value) [@property] videoGravity
static org.moe.natj.objc.Class	superclass_static()
static boolean	supportsSecureCoding()
AVMetadataObject	transformedMetadataObjectForMetadataObject(AVMetadataObject metadataObject) transformedMetadataObjectForMetadataObject:
static long	version_static()
java.lang.String	videoGravity() [@property] videoGravity

Methods inherited from class apple.quartzcore.CALayer

actionForKey, actions, addAnimationForKey, addSublayer, affineTransform, allowsEdgeAntialiasing, allowsGroupOpacity, anchorPoint, anchorPointZ, animationForKey, animationKeys, autoreverses, backgroundColor, backgroundFilters, beginTime, borderColor, borderWidth, bounds, compositingFilter, containsPoint, contents, contentsAreFlipped, contentsCenter, contentsFormat, contentsGravity, contentsRect, contentsScale, convertPointFromLayer, convertPointToLayer, convertRectFromLayer, convertRectToLayer, convertTimeFromLayer, convertTimeToLayer, cornerCurve, cornerRadius, delegate, display, displayIfNeeded, drawInContext, drawsAsynchronously, duration, edgeAntialiasingMask, encodeWithCoder, fillMode, filters, frame, hitTest, insertSublayerAbove, insertSublayerAtIndex, insertSublayerBelow, isDoubleSided, isGeometryFlipped, isHidden, isOpaque, layoutIfNeeded, layoutSublayers, magnificationFilter, mask, maskedCorners, masksToBounds, minificationFilter, minificationFilterBias, modelLayer, name, needsDisplay, needsDisplayOnBoundsChange, needsLayout, opacity, position, preferredFrameSize, presentationLayer, rasterizationScale, removeAllAnimations, removeAnimationForKey, removeFromSuperlayer, renderInContext, repeatCount, repeatDuration, replaceSublayerWith, scrollPoint, scrollRectToVisible, setActions, setAffineTransform, setAllowsEdgeAntialiasing, setAllowsGroupOpacity, setAnchorPoint, setAnchorPointZ, setAutoreverses, setBackgroundColor, setBackgroundFilters, setBeginTime, setBorderColor, setBorderWidth, setBounds, setCompositingFilter, setContents, setContentsCenter, setContentsFormat, setContentsGravity, setContentsRect, setContentsScale, setCornerCurve, setCornerRadius, setDelegate_unsafe, setDelegate, setDoubleSided, setDrawsAsynchronously, setDuration, setEdgeAntialiasingMask, setFillMode, setFilters, setFrame, setGeometryFlipped, setHidden, setMagnificationFilter, setMask, setMaskedCorners, setMasksToBounds, setMinificationFilter, setMinificationFilterBias, setName, setNeedsDisplay, setNeedsDisplayInRect, setNeedsDisplayOnBoundsChange, setNeedsLayout, setOpacity, setOpaque, setPosition, setRasterizationScale, setRepeatCount, setRepeatDuration, setShadowColor, setShadowOffset, setShadowOpacity, setShadowPath, setShadowRadius, setShouldRasterize, setSpeed, setStyle, setSublayers, setSublayerTransform, setTimeOffset, setTransform, setZPosition, shadowColor, shadowOffset, shadowOpacity, shadowPath, shadowRadius, shouldArchiveValueForKey, shouldRasterize, speed, style, sublayers, sublayerTransform, superlayer, timeOffset, transform, visibleRect, zPosition

Methods inherited from class apple.NSObject

accessibilityActivate, accessibilityActivationPoint, accessibilityAssistiveTechnologyFocusedIdentifiers, accessibilityAttributedHint, accessibilityAttributedLabel, accessibilityAttributedUserInputLabels, accessibilityAttributedValue, accessibilityContainerType, accessibilityCustomActions, accessibilityCustomRotors, accessibilityDecrement, accessibilityDragSourceDescriptors, accessibilityDropPointDescriptors, accessibilityElementAtIndex, accessibilityElementCount, accessibilityElementDidBecomeFocused, accessibilityElementDidLoseFocus, accessibilityElementIsFocused, accessibilityElements, accessibilityElementsHidden, accessibilityFrame, accessibilityHint, accessibilityIncrement, accessibilityLabel, accessibilityLanguage, accessibilityNavigationStyle, accessibilityPath, accessibilityPerformEscape, accessibilityPerformMagicTap, accessibilityRespondsToUserInteraction, accessibilityScroll, accessibilityTextualContext, accessibilityTraits, accessibilityUserInputLabels, accessibilityValue, accessibilityViewIsModal, addObserverForKeyPathOptionsContext, attemptRecoveryFromErrorOptionIndex, attemptRecoveryFromErrorOptionIndexDelegateDidRecoverSelectorContextInfo, autoContentAccessingProxy, awakeAfterUsingCoder, awakeFromNib, class_objc, classForCoder, classForKeyedArchiver, copy, dealloc, debugDescription, description, dictionaryWithValuesForKeys, didChangeValueForKey, didChangeValueForKeyWithSetMutationUsingObjects, didChangeValuesAtIndexesForKey, doesNotRecognizeSelector, fileManagerShouldProceedAfterError, fileManagerWillProcessPath, finalize_objc, forwardingTargetForSelector, forwardInvocation, hash, indexOfAccessibilityElement, isAccessibilityElement, isEqual, isKindOfClass, isMemberOfClass, isProxy, methodForSelector, methodSignatureForSelector, mutableArrayValueForKey, mutableArrayValueForKeyPath, mutableCopy, mutableOrderedSetValueForKey, mutableOrderedSetValueForKeyPath, mutableSetValueForKey, mutableSetValueForKeyPath, observationInfo, observeValueForKeyPathOfObjectChangeContext, performSelector, performSelectorInBackgroundWithObject, performSelectorOnMainThreadWithObjectWaitUntilDone, performSelectorOnMainThreadWithObjectWaitUntilDoneModes, performSelectorOnThreadWithObjectWaitUntilDone, performSelectorOnThreadWithObjectWaitUntilDoneModes, performSelectorWithObject, performSelectorWithObjectAfterDelay, performSelectorWithObjectAfterDelayInModes, performSelectorWithObjectWithObject, prepareForInterfaceBuilder, provideImageDataBytesPerRowOrigin_Size_UserInfo, removeObserverForKeyPath, removeObserverForKeyPathContext, replacementObjectForCoder, replacementObjectForKeyedArchiver, respondsToSelector, self, setAccessibilityActivationPoint, setAccessibilityAttributedHint, setAccessibilityAttributedLabel, setAccessibilityAttributedUserInputLabels, setAccessibilityAttributedValue, setAccessibilityContainerType, setAccessibilityCustomActions, setAccessibilityCustomRotors, setAccessibilityDragSourceDescriptors, setAccessibilityDropPointDescriptors, setAccessibilityElements, setAccessibilityElementsHidden, setAccessibilityFrame, setAccessibilityHint, setAccessibilityLabel, setAccessibilityLanguage, setAccessibilityNavigationStyle, setAccessibilityPath, setAccessibilityRespondsToUserInteraction, setAccessibilityTextualContext, setAccessibilityTraits, setAccessibilityUserInputLabels, setAccessibilityValue, setAccessibilityViewIsModal, setIsAccessibilityElement, setNilValueForKey, setObservationInfo, setShouldGroupAccessibilityChildren, setValueForKey, setValueForKeyPath, setValueForUndefinedKey, setValuesForKeysWithDictionary, shouldGroupAccessibilityChildren, superclass, validateValueForKeyError, validateValueForKeyPathError, valueForKey, valueForKeyPath, valueForUndefinedKey, willChangeValueForKey, willChangeValueForKeyWithSetMutationUsingObjects, willChangeValuesAtIndexesForKey

Methods inherited from class org.moe.natj.objc.ObjCObject

equals, toString

Methods inherited from class org.moe.natj.general.NativeObject

finalize, getPeer, getPeerPointer

Methods inherited from class java.lang.Object

clone, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AVCaptureVideoPreviewLayer

protected AVCaptureVideoPreviewLayer(org.moe.natj.general.Pointer peer)

Method Detail

accessInstanceVariablesDirectly

public static boolean accessInstanceVariablesDirectly()

alloc

public static AVCaptureVideoPreviewLayer alloc()

allocWithZone

public static AVCaptureVideoPreviewLayer 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()

defaultActionForKey

public static CAAction defaultActionForKey(java.lang.String event)

defaultValueForKey

public static java.lang.Object defaultValueForKey(java.lang.String key)

description_static

public static java.lang.String description_static()

hash_static

public static long hash_static()

instanceMethodForSelector

public static NSObject.Function_instanceMethodForSelector_ret instanceMethodForSelector(org.moe.natj.objc.SEL aSelector)

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)

layer

public static AVCaptureVideoPreviewLayer layer()

layerWithSession

public static AVCaptureVideoPreviewLayer layerWithSession(AVCaptureSession session)

layerWithSession:

Creates an AVCaptureVideoPreviewLayer for previewing the visual output of the specified AVCaptureSession.

Parameters:

session - The AVCaptureSession instance to be previewed.

Returns:

A newly initialized AVCaptureVideoPreviewLayer instance.

layerWithSessionWithNoConnection

public static AVCaptureVideoPreviewLayer layerWithSessionWithNoConnection(AVCaptureSession session)

layerWithSessionWithNoConnection:

Creates an AVCaptureVideoPreviewLayer for previewing the visual output of the specified AVCaptureSession, but creates no connections to any of the session's eligible video inputs. Only use this initializer if you intend to manually form a connection between a desired AVCaptureInputPort and the receiver using AVCaptureSession's -addConnection: method.

Parameters:

session - The AVCaptureSession instance to be previewed.

Returns:

A newly initialized AVCaptureVideoPreviewLayer instance.

needsDisplayForKey

public static boolean needsDisplayForKey(java.lang.String key)

new_objc

public static AVCaptureVideoPreviewLayer 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()

version_static

public static long version_static()

automaticallyAdjustsMirroring

@Deprecated
public boolean automaticallyAdjustsMirroring()

Deprecated.

[@property] automaticallyAdjustsMirroring

Specifies whether or not the value of @"mirrored" can change based on configuration of the session.

For some session configurations, preview will be mirrored by default. When the value of this property is YES, the value of @"mirrored" may change depending on the configuration of the session, for example after switching to a different AVCaptureDeviceInput. The default value is YES. This property is deprecated. Use AVCaptureConnection's -automaticallyAdjustsVideoMirroring instead.

captureDevicePointOfInterestForPoint

public CGPoint captureDevicePointOfInterestForPoint(CGPoint pointInLayer)

captureDevicePointOfInterestForPoint:

Converts a point in layer coordinates to a point of interest in the coordinate space of the capture device providing input to the layer.

AVCaptureDevice pointOfInterest is expressed as a CGPoint where {0,0} represents the top left of the picture area, and {1,1} represents the bottom right on an unrotated picture. This convenience method converts a point in the coordinate space of the receiver to a point of interest in the coordinate space of the AVCaptureDevice providing input to the receiver. The conversion takes frameSize and videoGravity into consideration.

Parameters:

pointInLayer - A CGPoint in layer coordinates.

Returns:

A CGPoint in the coordinate space of the capture device providing input to the layer.

connection

public AVCaptureConnection connection()

[@property] connection

The AVCaptureConnection instance describing the AVCaptureInputPort to which the receiver is connected.

When calling initWithSession: or setSession: with a valid AVCaptureSession instance, a connection is formed to the first eligible video AVCaptureInput. If the receiver is detached from a session, the connection property becomes nil.

init

public AVCaptureVideoPreviewLayer init()

Description copied from class: CALayer

The designated initializer.

Overrides:

init in class CALayer

initWithCoder

public AVCaptureVideoPreviewLayer initWithCoder(NSCoder coder)

Description copied from interface: NSCoding

NS_DESIGNATED_INITIALIZER

Specified by:

initWithCoder in interface NSCoding

Overrides:

initWithCoder in class CALayer

initWithLayer

public AVCaptureVideoPreviewLayer initWithLayer(java.lang.Object layer)

Description copied from class: CALayer

This initializer is used by CoreAnimation to create shadow copies of layers, e.g. for use as presentation layers. Subclasses can override this method to copy their instance variables into the presentation layer (subclasses should call the superclass afterwards). Calling this method in any other situation will result in undefined behavior.

Overrides:

initWithLayer in class CALayer

initWithSession

public AVCaptureVideoPreviewLayer initWithSession(AVCaptureSession session)

initWithSession:

Creates an AVCaptureVideoPreviewLayer for previewing the visual output of the specified AVCaptureSession.

Parameters:

session - The AVCaptureSession instance to be previewed.

Returns:

A newly initialized AVCaptureVideoPreviewLayer instance.

initWithSessionWithNoConnection

public AVCaptureVideoPreviewLayer initWithSessionWithNoConnection(AVCaptureSession session)

initWithSessionWithNoConnection:

Creates an AVCaptureVideoPreviewLayer for previewing the visual output of the specified AVCaptureSession, but creates no connections to any of the session's eligible video inputs. Only use this initializer if you intend to manually form a connection between a desired AVCaptureInputPort and the receiver using AVCaptureSession's -addConnection: method.

Parameters:

session - The AVCaptureSession instance to be previewed.

Returns:

A newly initialized AVCaptureVideoPreviewLayer instance.

isMirrored

@Deprecated
public boolean isMirrored()

Deprecated.

[@property] mirrored

Specifies whether or not the preview is flipped over a vertical axis.

For most applications, it is unnecessary to manipulate preview mirroring manually if @"automaticallyAdjustsMirroring" is set to YES. The value of @"automaticallyAdjustsMirroring" must be NO in order to set @"mirrored". The value of @"mirroringSupported" must be YES in order to set @"mirrored". An exception will be raised if the value of @"mirrored" is mutated without respecting these requirements. This property is deprecated. Use AVCaptureConnection's -videoMirrored instead.

setMirrored

@Deprecated
public void setMirrored(boolean value)

Deprecated.

[@property] mirrored

Specifies whether or not the preview is flipped over a vertical axis.

For most applications, it is unnecessary to manipulate preview mirroring manually if @"automaticallyAdjustsMirroring" is set to YES. The value of @"automaticallyAdjustsMirroring" must be NO in order to set @"mirrored". The value of @"mirroringSupported" must be YES in order to set @"mirrored". An exception will be raised if the value of @"mirrored" is mutated without respecting these requirements. This property is deprecated. Use AVCaptureConnection's -videoMirrored instead.

isMirroringSupported

@Deprecated
public boolean isMirroringSupported()

Deprecated.

[@property] mirroringSupported

Specifies whether or not the preview layer supports mirroring.

Mirroring is not supported on all hardware configurations. An application should check the value of @"mirroringSupported" before attempting to manipulate mirroring on the receiver. This property is deprecated. Use AVCaptureConnection's -isVideoMirroringSupported instead.

isOrientationSupported

@Deprecated
public boolean isOrientationSupported()

Deprecated.

[@property] orientationSupported

Specifies whether or not the preview layer supports orientation.

Changes in orientation are not supported on all hardware configurations. An application should check the value of @"orientationSupported" before attempting to manipulate the orientation of the receiver. This property is deprecated. Use AVCaptureConnection's -isVideoOrientationSupported instead.

metadataOutputRectOfInterestForRect

public CGRect metadataOutputRectOfInterestForRect(CGRect rectInLayerCoordinates)

metadataOutputRectOfInterestForRect:

Converts a rectangle in layer coordinates to a rectangle of interest in the coordinate space of an AVCaptureMetadataOutput whose capture device is providing input to the layer.

AVCaptureMetadataOutput rectOfInterest is expressed as a CGRect where {0,0} represents the top left of the picture area, and {1,1} represents the bottom right on an unrotated picture. This convenience method converts a rectangle in the coordinate space of the receiver to a rectangle of interest in the coordinate space of an AVCaptureMetadataOutput whose AVCaptureDevice is providing input to the receiver. The conversion takes frame size and videoGravity into consideration.

Parameters:

rectInLayerCoordinates - A CGRect in layer coordinates.

Returns:

A CGRect in the coordinate space of the metadata output whose capture device is providing input to the layer.

orientation

@Deprecated
public long orientation()

Deprecated.

[@property] orientation

Specifies the orientation of the preview layer.

AVCaptureVideoOrientation and its constants are defined in AVCaptureSession.h. The value of @"orientationSupported" must be YES in order to set @"orientation". An exception will be raised if this requirement is ignored. This property is deprecated. Use AVCaptureConnection's -videoOrientation instead.

pointForCaptureDevicePointOfInterest

public CGPoint pointForCaptureDevicePointOfInterest(CGPoint captureDevicePointOfInterest)

pointForCaptureDevicePointOfInterest:

Converts a point of interest in the coordinate space of the capture device providing input to the layer to a point in layer coordinates.

AVCaptureDevice pointOfInterest is expressed as a CGPoint where {0,0} represents the top left of the picture area, and {1,1} represents the bottom right on an unrotated picture. This convenience method converts a point in the coordinate space of the AVCaptureDevice providing input to the coordinate space of the receiver. The conversion takes frame size and videoGravity into consideration.

Parameters:

captureDevicePointOfInterest - A CGPoint in the coordinate space of the capture device providing input to the layer.

Returns:

A CGPoint in layer coordinates.

rectForMetadataOutputRectOfInterest

public CGRect rectForMetadataOutputRectOfInterest(CGRect rectInMetadataOutputCoordinates)

rectForMetadataOutputRectOfInterest:

Converts a rectangle of interest in the coordinate space of an AVCaptureMetadataOutput whose capture device is providing input to the layer to a rectangle in layer coordinates.

AVCaptureMetadataOutput rectOfInterest is expressed as a CGRect where {0,0} represents the top left of the picture area, and {1,1} represents the bottom right on an unrotated picture. This convenience method converts a rectangle in the coordinate space of an AVCaptureMetadataOutput whose AVCaptureDevice is providing input to the coordinate space of the receiver. The conversion takes frame size and videoGravity into consideration.

Parameters:

rectInMetadataOutputCoordinates - A CGRect in the coordinate space of the metadata output whose capture device is providing input to the layer.

Returns:

A CGRect in layer coordinates.

session

public AVCaptureSession session()

[@property] session

The AVCaptureSession instance being previewed by the receiver.

The session is retained by the preview layer.

setAutomaticallyAdjustsMirroring

@Deprecated
public void setAutomaticallyAdjustsMirroring(boolean value)

Deprecated.

[@property] automaticallyAdjustsMirroring

Specifies whether or not the value of @"mirrored" can change based on configuration of the session.

For some session configurations, preview will be mirrored by default. When the value of this property is YES, the value of @"mirrored" may change depending on the configuration of the session, for example after switching to a different AVCaptureDeviceInput. The default value is YES. This property is deprecated. Use AVCaptureConnection's -automaticallyAdjustsVideoMirroring instead.

setOrientation

@Deprecated
public void setOrientation(long value)

Deprecated.

[@property] orientation

Specifies the orientation of the preview layer.

AVCaptureVideoOrientation and its constants are defined in AVCaptureSession.h. The value of @"orientationSupported" must be YES in order to set @"orientation". An exception will be raised if this requirement is ignored. This property is deprecated. Use AVCaptureConnection's -videoOrientation instead.

setSession

public void setSession(AVCaptureSession value)

[@property] session

The AVCaptureSession instance being previewed by the receiver.

The session is retained by the preview layer.

setSessionWithNoConnection

public void setSessionWithNoConnection(AVCaptureSession session)

method setSessionWithNoConnection:

Attaches the receiver to a given session without implicitly forming a connection to the first eligible video AVCaptureInputPort. Only use this setter if you intend to manually form a connection between a desired AVCaptureInputPort and the receiver using AVCaptureSession's -addConnection: method.

The session is retained by the preview layer.

setVideoGravity

public void setVideoGravity(java.lang.String value)

[@property] videoGravity

A string defining how the video is displayed within an AVCaptureVideoPreviewLayer bounds rect.

Options are AVLayerVideoGravityResize, AVLayerVideoGravityResizeAspect and AVLayerVideoGravityResizeAspectFill. AVLayerVideoGravityResizeAspect is default. See for a description of these options.

transformedMetadataObjectForMetadataObject

public AVMetadataObject transformedMetadataObjectForMetadataObject(AVMetadataObject metadataObject)

transformedMetadataObjectForMetadataObject:

Converts an AVMetadataObject's visual properties to layer coordinates.

AVMetadataObject bounds may be expressed as a rect where {0,0} represents the top left of the picture area, and {1,1} represents the bottom right on an unrotated picture. Face metadata objects likewise express yaw and roll angles with respect to an unrotated picture. -transformedMetadataObjectForMetadataObject: converts the visual properties in the coordinate space of the supplied AVMetadataObject to the coordinate space of the receiver. The conversion takes orientation, mirroring, layer bounds and videoGravity into consideration. If the provided metadata object originates from an input source other than the preview layer's, nil will be returned.

Parameters:

metadataObject - An AVMetadataObject originating from the same AVCaptureInput as the preview layer.

Returns:

An AVMetadataObject whose properties are in layer coordinates.

videoGravity

public java.lang.String videoGravity()

[@property] videoGravity

A string defining how the video is displayed within an AVCaptureVideoPreviewLayer bounds rect.

Options are AVLayerVideoGravityResize, AVLayerVideoGravityResizeAspect and AVLayerVideoGravityResizeAspectFill. AVLayerVideoGravityResizeAspect is default. See for a description of these options.

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 CALayer

cornerCurveExpansionFactor

public static double cornerCurveExpansionFactor(java.lang.String curve)

isPreviewing

public boolean isPreviewing()

[@property] previewing

A BOOL value indicating whether the receiver is currently rendering video frames from its source.

An AVCaptureVideoPreviewLayer begins previewing when -[AVCaptureSession startRunning] is called. When associated with an AVCaptureMultiCamSession, all video preview layers are guaranteed to be previewing by the time the blocking call to -startRunning or -commitConfiguration returns. While a session is running, you may enable or disable a video preview layer's connection to re-start or stop the flow of video to the layer. Once you've set enabled to YES, you can observe this property changing from NO to YES and synchronize any UI to take place precisely when the video resumes rendering to the video preview layer.