HardwareBuffer Class

Definition

Namespace:

Android.Hardware

Assembly:

Mono.Android.dll

HardwareBuffer wraps a native AHardwareBuffer object, which is a low-level object representing a memory buffer accessible by various hardware units.

[Android.Runtime.Register("android/hardware/HardwareBuffer", ApiSince=26, DoNotGenerateAcw=true)]
public sealed class HardwareBuffer : Java.Lang.Object, Android.OS.IParcelable, IDisposable, Java.Interop.IJavaPeerable, Java.Lang.IAutoCloseable

[<Android.Runtime.Register("android/hardware/HardwareBuffer", ApiSince=26, DoNotGenerateAcw=true)>]
type HardwareBuffer = class
    inherit Object
    interface IParcelable
    interface IJavaObject
    interface IDisposable
    interface IJavaPeerable
    interface IAutoCloseable

Inheritance

Object

Object

HardwareBuffer

Attributes

RegisterAttribute

Implements

IParcelable IJavaObject IJavaPeerable IAutoCloseable IDisposable

Remarks

HardwareBuffer wraps a native AHardwareBuffer object, which is a low-level object representing a memory buffer accessible by various hardware units. HardwareBuffer allows sharing buffers across different application processes. In particular, HardwareBuffers may be mappable to memory accessibly to various hardware systems, such as the GPU, a sensor or context hub, or other auxiliary processing units.

For more information, see the NDK documentation for AHardwareBuffer.

Java documentation for android.hardware.HardwareBuffer.

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Fields

UsageComposerOverlay	The buffer will be used as a hardware composer overlay layer.
UsageCpuReadOften	Usage: The buffer will often be read by the CPU
UsageCpuReadRarely	Usage: The buffer will sometimes be read by the CPU
UsageCpuWriteOften	Usage: The buffer will often be written to by the CPU
UsageCpuWriteRarely	Usage: The buffer will sometimes be written to by the CPU
UsageFrontBuffer	Usage: The buffer is used for front-buffer rendering.
UsageGpuColorOutput	Usage: The buffer will be written to by the GPU
UsageGpuCubeMap	Usage: The buffer will be used as a cube map texture
UsageGpuDataBuffer	Usage: The buffer will be used as a shader storage or uniform buffer object
UsageGpuMipmapComplete	Usage: The buffer contains a complete mipmap hierarchy
UsageGpuSampledImage	Usage: The buffer will be read from by the GPU
UsageProtectedContent	Usage: The buffer must not be used outside of a protected hardware path
UsageSensorDirectData	Usage: The buffer will be used for sensor direct data
UsageVideoEncode	Usage: The buffer will be read by a hardware video encoder
Ycbcr420888	Obsolete. Format: Planar YCbCr 420; must have an even width and height
YcbcrP010	Obsolete. Android YUV P010 format.

Properties

Class	Returns the runtime class of this Object. (Inherited from Object)
Creator
Format	Returns the
Handle	The handle to the underlying Android instance. (Inherited from Object)
Height	Returns the height of this buffer in pixels.
Id	Returns the system-wide unique id for this buffer
IsClosed	Indicates whether this buffer has been closed.
JniIdentityHashCode	(Inherited from Object)
JniPeerMembers
Layers	Returns the number of layers in this buffer.
PeerReference	(Inherited from Object)
ThresholdClass	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Object)
ThresholdType	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Object)
Width	Returns the width of this buffer in pixels.

Methods

Clone()	Creates and returns a copy of this object. (Inherited from Object)
Close()	Destroys this buffer immediately.
DescribeContents()
Dispose()	(Inherited from Object)
Dispose(Boolean)	(Inherited from Object)
Equals(Object)	Indicates whether some other object is "equal to" this one. (Inherited from Object)
GetHashCode()	Returns a hash code value for the object. (Inherited from Object)
JavaFinalize()	Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object)
Notify()	Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object)
NotifyAll()	Wakes up all threads that are waiting on this object's monitor. (Inherited from Object)
SetHandle(IntPtr, JniHandleOwnership)	Sets the Handle property. (Inherited from Object)
ToArray<T>()	(Inherited from Object)
ToString()	Returns a string representation of the object. (Inherited from Object)
UnregisterFromRuntime()	(Inherited from Object)
Wait()	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object)
Wait(Int64)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)
Wait(Int64, Int32)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)
WriteToParcel(Parcel, ParcelableWriteFlags)	Flatten this object in to a Parcel.

Explicit Interface Implementations

IJavaPeerable.Disposed()	(Inherited from Object)
IJavaPeerable.DisposeUnlessReferenced()	(Inherited from Object)
IJavaPeerable.Finalized()	(Inherited from Object)
IJavaPeerable.JniManagedPeerState	(Inherited from Object)
IJavaPeerable.SetJniIdentityHashCode(Int32)	(Inherited from Object)
IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates)	(Inherited from Object)
IJavaPeerable.SetPeerReference(JniObjectReference)	(Inherited from Object)

Extension Methods

JavaCast<TResult>(IJavaObject)	Performs an Android runtime-checked type conversion.
JavaCast<TResult>(IJavaObject)
GetJniTypeName(IJavaPeerable)