PerceptionVideoFrameAllocator 类

定义

命名空间:

Windows.Devices.Perception.Provider

可以直接创建 PerceptionFrame 或从 Windows：：Media：：VideoFrame 写入或复制到 PerceptionFrame 的分配器。

public ref class PerceptionVideoFrameAllocator sealed : IClosable

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.Activatable(Windows.Devices.Perception.Provider.IPerceptionVideoFrameAllocatorFactory, 65536, "Windows.Foundation.UniversalApiContract")]
/// [Windows.Foundation.Metadata.Deprecated("PerceptionVideoFrameAllocator may be unavailable after Windows Creator Update. Please refer to AVStream on MSDN.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 262144, "Windows.Foundation.UniversalApiContract")]
class PerceptionVideoFrameAllocator final : IClosable

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.Activatable(typeof(Windows.Devices.Perception.Provider.IPerceptionVideoFrameAllocatorFactory), 65536, "Windows.Foundation.UniversalApiContract")]
[Windows.Foundation.Metadata.Deprecated("PerceptionVideoFrameAllocator may be unavailable after Windows Creator Update. Please refer to AVStream on MSDN.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 262144, "Windows.Foundation.UniversalApiContract")]
public sealed class PerceptionVideoFrameAllocator : System.IDisposable

function PerceptionVideoFrameAllocator(maxOutstandingFrameCountForWrite, format, resolution, alpha)

Public NotInheritable Class PerceptionVideoFrameAllocator
Implements IDisposable

继承

Object Platform::Object IInspectable PerceptionVideoFrameAllocator

属性

ActivatableAttribute ContractVersionAttribute MarshalingBehaviorAttribute ThreadingAttribute DeprecatedAttribute

实现

IClosable IDisposable

Windows 要求

设备系列	Windows 10 (在 10.0.10240.0 中引入)
API contract	Windows.Foundation.UniversalApiContract (在 v1.0 中引入)

构造函数

PerceptionVideoFrameAllocator(UInt32, BitmapPixelFormat, Size, BitmapAlphaMode)

使用 IPerceptionFrameProvider 用于创建通过 PerceptionFrameProviderService：:P ublishFrameForProvider 发布的 PerceptionFrame 所需的属性初始化新的 PerceptionVideoFrameAllocator。

方法

AllocateFrame()	使用创建 PerceptionVideoFrameAllocator 时指定的属性创建一个空 PerceptionFrame。
Close()	释放由 Windows 运行时 对象公开的系统资源。
CopyFromVideoFrame(VideoFrame)	创建视频 FrameProvider 的深层副本，其中包含已用生成的 PerceptionFrame 填充的字节。
Dispose()	执行与释放或重置非托管资源关联的应用程序定义的任务。

另请参阅

• IClosable