英文:
Android camera2: how ho to get Image from a defined cameraId?
问题
我使用以下 Android 代码中的 CameraManager 服务：
CameraManager cameraManager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);
String[] cameraIdList = cameraManager.getCameraIdList();
现在，我想要从此列表中的一个 cameraId 获取图像，以便能够对该图像执行以下代码：
ShortBuffer shortDepthBuffer = image.getPlanes()[0].getBuffer().asShortBuffer();
我如何根据指定的 cameraId 获取这个图像呢？
谢谢！
英文:
I use the following android code CameraManager service:
CameraManager cameraManager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);
String[] cameraIdList = cameraManager.getCameraIdList();
Now, I want to get the image from one of the cameraIds in this list in order to be able to execute the following code on this image:
ShortBuffer shortDepthBuffer = image.getPlanes()[0].getBuffer().asShortBuffer();
How can I get this Image from a defined cameraId ?
Thanks !
答案1
得分: 1
使用Camera2 API 没有快捷简单的方法来完成这个任务。对于特定的 cameraId，您需要：
- 打开相机设备：
cameraManager.openCamera(...) - 一旦设备被打开，使用它创建捕获会话：
cameraDevice.createCaptureSession(...) - 为输出配置
ImageReader并创建捕获请求：cameraDevice.createCaptureRequest(...) - 使用
captureSession处理您的捕获请求：captureSession.capture(...) - 作为结果，您将从为捕获输出配置的
ImageReader获取一个Image。
因此，对于简单的相机应用，我建议您查看 CameraX。1
英文:
There is no fast and easy way to do this with the Camera2 API. For a particular cameraId you need to:
- Open camera device:
cameraManager.openCamera(...) - Once the device is opened, use it to create capture session:
cameraDevice.createCaptureSession(...) - Configure
ImageReaderfor output and create capture request::cameraDevice.createCaptureRequest(...) - Use
captureSessionto process your capture request:captureSession.capture(...) - As the result you will obtain an
ImagefromImageReaderthat you have configured for capture output.
Therefore, for simple camera app I would suggest to look at CameraX instead.
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