MultiResolutionImageReader Class
Definition
Important
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The MultiResolutionImageReader class wraps a group of ImageReader ImageReaders with
the same format and different sizes, source camera Id, or camera sensor modes.
[Android.Runtime.Register("android/hardware/camera2/MultiResolutionImageReader", ApiSince=31, DoNotGenerateAcw=true)]
public class MultiResolutionImageReader : Java.Lang.Object, IDisposable, Java.Interop.IJavaPeerable, Java.Lang.IAutoCloseable[<Android.Runtime.Register("android/hardware/camera2/MultiResolutionImageReader", ApiSince=31, DoNotGenerateAcw=true)>]
type MultiResolutionImageReader = class
inherit Object
interface IAutoCloseable
interface IJavaObject
interface IDisposable
interface IJavaPeerable- Inheritance
- Attributes
- Implements
Remarks
The MultiResolutionImageReader class wraps a group of ImageReader ImageReaders with the same format and different sizes, source camera Id, or camera sensor modes.
The main use case of this class is for a CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA logical multi-camera or an ultra high resolution sensor camera to output variable-size images. For a logical multi-camera which implements optical zoom, different physical cameras may have different maximum resolutions. As a result, when the camera device switches between physical cameras depending on zoom ratio, the maximum resolution for a particular format may change. For an ultra high resolution sensor camera, the camera device may deem it better or worse to run in maximum resolution mode / default mode depending on lighting conditions. So the application may choose to let the camera device decide on its behalf.
MultiResolutionImageReader should be used for a camera device only if the camera device supports multi-resolution output stream by advertising the specified output format in CameraCharacteristics#SCALER_MULTI_RESOLUTION_STREAM_CONFIGURATION_MAP.
To acquire images from the MultiResolutionImageReader, the application must use the ImageReader object passed by ImageReader.OnImageAvailableListener#onImageAvailable callback to call ImageReader#acquireNextImage or ImageReader#acquireLatestImage. The application must not use the ImageReader passed by an ImageReader.OnImageAvailableListener#onImageAvailable callback to acquire future images because future images may originate from a different ImageReader contained within the MultiResolutionImageReader.
Java documentation for android.hardware.camera2.MultiResolutionImageReader.
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.
Constructors
| Name | Description |
|---|---|
| MultiResolutionImageReader(ICollection<MultiResolutionStreamInfo>, ImageFormatType, Int32, Int64) |
Create a new multi-resolution reader based on a group of camera stream properties returned by a camera device, and the desired format, maximum buffer capacity and consumer usage flag. |
| MultiResolutionImageReader(ICollection<MultiResolutionStreamInfo>, Int32, Int32) |
Create a new multi-resolution reader based on a group of camera stream properties returned by a camera device. |
| MultiResolutionImageReader(IntPtr, JniHandleOwnership) | |
Properties
| Name | Description |
|---|---|
| Class |
Returns the runtime class of this |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| JniIdentityHashCode |
Gets the identity hash code assigned to this Java peer by the interop runtime. (Inherited from Object) |
| JniPeerMembers | |
| PeerReference |
Gets the JNI object reference for this Java peer. (Inherited from Object) |
| Surface |
Get the surface that is used as a target for |
| ThresholdClass | |
| ThresholdType | |
Methods
| Name | Description |
|---|---|
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Close() | |
| Dispose() |
Releases the resources held by this Java peer. (Inherited from Object) |
| Dispose(Boolean) |
Releases the resources held by this Java peer. (Inherited from Object) |
| Equals(Object) |
Indicates whether some other object is "equal to" this one. (Inherited from Object) |
| Flush() |
Flush pending images from all internal ImageReaders |
| GetHashCode() |
Returns a hash code value for the object. (Inherited from Object) |
| GetStreamInfoForImageReader(ImageReader) |
Get the MultiResolutionStreamInfo describing the ImageReader an image originates from |
| 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) |
| SetOnImageAvailableListener(ImageReader+IOnImageAvailableListener, IExecutor) |
Set onImageAvailableListener callback. |
| ToArray<T>() |
Creates a managed array from this Java array wrapper. (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| UnregisterFromRuntime() |
Unregisters this Java peer from the interop runtime. (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, 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) |
| 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) |
Explicit Interface Implementations
| Name | Description |
|---|---|
| IJavaPeerable.Disposed() |
Notifies the interop runtime that this managed peer has been disposed. (Inherited from Object) |
| IJavaPeerable.DisposeUnlessReferenced() |
Releases this Java peer unless it is retained by another managed reference. (Inherited from Object) |
| IJavaPeerable.Finalized() |
Notifies the interop runtime that this managed peer has been finalized. (Inherited from Object) |
| IJavaPeerable.JniManagedPeerState |
Gets the state that describes the relationship between this managed peer and its JNI reference. (Inherited from Object) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) |
Sets the interop identity hash code for this Java peer. (Inherited from Object) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) |
Sets the managed and JNI peer state for this Java peer. (Inherited from Object) |
| IJavaPeerable.SetPeerReference(JniObjectReference) |
Sets the JNI object reference used by this managed peer. (Inherited from Object) |
Extension Methods
| Name | Description |
|---|---|
| GetJniTypeName(IJavaPeerable) |
Gets the JNI name of the type of the instance |
| JavaAs<TResult>(IJavaPeerable) |
Try to coerce |
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) | |
| TryJavaCast<TResult>(IJavaPeerable, TResult) |
Try to coerce |