如何在Android中获取对Camera2 API的最新曝光 [英] How to get current Exposure for Camera2 API in android

问题描述

在android.hardware.Camera旧版本中，我使用下面的代码获取当前的Exposure，并将其用于相机

In android.hardware.Camera old, I use code below get current Exposure and get it for Camera

Camera.Parameters param = mCamera.getParameters();
currentExposure += param.getExposureCompensationStep();
param.setExposureCompensation((int) currentExposure);
Timber.d("exposure:" + currentExposure);
mCamera.setParameters(param);

如何将其用于Camera2 API 新功能.请.救救我！

How to use it for Camera2 API new. Please. Help me!

推荐答案

1. 您的代码中必须有一个呼叫captureSession.setRepeatingRequest(request, captureCallback, ...);.
2. CaptureResult实例被传递到此captureCallback.
3. 您可以通过键CaptureResult.SENSOR_EXPOSURE_TIME从CaptureResult连续获得曝光(以纳秒为单位).

1. There must be a call captureSession.setRepeatingRequest(request, captureCallback, ...); in your code.
2. CaptureResult instance is passed to this captureCallback.
3. You can continuously get exposure (in nanoseconds) from CaptureResult via key CaptureResult.SENSOR_EXPOSURE_TIME.

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