程序包 ohos.media.camera.device

类 FrameStateCallback

java.lang.Object

ohos.media.camera.device.FrameStateCallback

public abstract class FrameStateCallback
extends Object

Provides callbacks for the frame processing states.

As input parameters of Camera#configure(CameraConfig), the callbacks are used to obtain the frame processing states.

从以下版本开始:

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SystemCapability

SystemCapability.Multimedia#CAMERA

构造器概要

构造器

构造器	说明
FrameStateCallback()

方法概要

限定符和类型	方法	说明
void	onCaptureTriggerFinished(Camera camera, int captureTriggerId, long lastFrameNumber)	Called when a triggered frame capture action is finished.
void	onCaptureTriggerInterrupted(Camera camera, int captureTriggerId)	Called when a triggered frame capture action is stopped in advance.
void	onCaptureTriggerStarted(Camera camera, int captureTriggerId, long firstFrameNumber)	Called when frame capture is started by a trigger.
void	onFrameError(Camera camera, FrameConfig frameConfig, int errorCode, FrameResult frameResult)	Called when an error occurs during the frame capture.
void	onFrameFinished(Camera camera, FrameConfig frameConfig, FrameResult frameResult)	Called when full frame capture results are generated for a frame capture.
void	onFrameProgressed(Camera camera, FrameConfig frameConfig, FrameResult frameResult)	Called when partial frame capture results are generated for a frame capture.
void	onFrameStarted(Camera camera, FrameConfig frameConfig, long frameNumber, long timestamp)	Called when frame capture starts.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

FrameStateCallback

public FrameStateCallback()

方法详细资料

onFrameStarted

public void onFrameStarted(Camera camera,
                           FrameConfig frameConfig,
                           long frameNumber,
                           long timestamp)

Called when frame capture starts.

参数:

camera - Indicates the camera.

frameConfig - Indicates the frame configuration.

frameNumber - Indicates the frame number.

timestamp - Indicates the time when frame capture starts.

从以下版本开始:

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onFrameProgressed

public void onFrameProgressed(Camera camera,
                              FrameConfig frameConfig,
                              FrameResult frameResult)

Called when partial frame capture results are generated for a frame capture.

This method sends some of the results before the capture ends.

参数:

camera - Indicates the camera.

frameConfig - Indicates the frame configuration.

frameResult - Indicates frame capture results.

从以下版本开始:

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onFrameFinished

public void onFrameFinished(Camera camera,
                            FrameConfig frameConfig,
                            FrameResult frameResult)

Called when full frame capture results are generated for a frame capture.

参数:

camera - Indicates the camera.

frameConfig - Indicates the frame configuration.

frameResult - Indicates all the capture results.

从以下版本开始:

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onFrameError

public void onFrameError(Camera camera,
                         FrameConfig frameConfig,
                         int errorCode,
                         FrameResult frameResult)

Called when an error occurs during the frame capture. FrameStateCallback#onFrameFinished(Camera, FrameConfig, FrameResult) will not be called for the capture.

参数:

camera - Indicates the camera.

frameConfig - Indicates the frame configuration.

errorCode - Indicates the error code.

frameResult - Indicates capture results.

从以下版本开始:

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onCaptureTriggerStarted

public void onCaptureTriggerStarted(Camera camera,
                                    int captureTriggerId,
                                    long firstFrameNumber)

Called when frame capture is started by a trigger.

A trigger can start one or more frame capture actions, and this callback identifies the start of this time of triggering.

参数:

camera - Indicates the camera.

captureTriggerId - Indicates a trigger ID.

firstFrameNumber - Indicates the frame number of the first frame in this capture.

从以下版本开始:

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onCaptureTriggerFinished

public void onCaptureTriggerFinished(Camera camera,
                                     int captureTriggerId,
                                     long lastFrameNumber)

Called when a triggered frame capture action is finished.

A trigger can start one or more frame capture actions, and this callback identifies the end of this time of triggering.

参数:

camera - Indicates the camera.

captureTriggerId - Indicates a trigger ID.

lastFrameNumber - Indicates the frame number of the last frame in this capture.

The last frame number can be -1, indicating that no frame is captured.

从以下版本开始:

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onCaptureTriggerInterrupted

public void onCaptureTriggerInterrupted(Camera camera,
                                        int captureTriggerId)

Called when a triggered frame capture action is stopped in advance.

A trigger can start one or more frame capture actions at a time, and this callback identifies this time of triggering.

参数:

camera - Indicates the camera.

captureTriggerId - Indicates a trigger ID.

从以下版本开始:

3