如何在Camera 2 API中配置捕获大小

问题描述

我正在制作一个android相机应用程序.我的疑问是如何将支持的分辨率作为参数传递给相机.

I'm making an android camera application. My doubt is how do I pass the supported resolutions as parameters to the camera.

因此，首先我要获得所有受支持的分辨率大小:

So, first I'm getting all the supported resolution sizes:

Size[] sizes = configurationMap.getOutputSizes(ImageFormat.YUV_420_888);
Log.d("test","size:"+sizes.length);

for(Size size : sizes){
    Log.d("test", "width: " + size.getWidth() + " height" + size.getHeight());
}

然后，我使用以下尺寸之一配置输入.

Then I'm configuring the input with one of these sizes.

InputConfiguration inputConfiguration = new InputConfiguration(1920, 1080, ImageFormat.YUV_420_888);

我正在将此输入传递给捕获会话

The I'm passing this input to a capture session

cameraDevice.createReprocessableCaptureSession(inputConfiguration, Arrays.asList(previewSurface), new CameraCaptureSession.StateCallback() {
    @Override
    public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) {
        try {
            cameraCaptureSession.setRepeatingRequest(mCaptureRequestBuilder.build(), null, handler);
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onConfigureFailed(@NonNull CameraCaptureSession cameraCaptureSession) {
        Toast.makeText(getApplicationContext(),"Camera Preview Failed!!",Toast.LENGTH_SHORT).show();
    }
}, null);

而且，我也得到了

java.lang.IllegalArgumentException: input size 1920x1080 is not valid

错误，尽管我的手机摄像头支持此大小(根据getOutputSizes()的调试结果).

error, though this size is supported on my phone camera (from the debug result of getOutputSizes()).

所以，我的问题是我的方法以及我哪里做错了.

So, my question is on my approach and where I'm wrong.

推荐答案

不要混淆 getOutputSizes(imageFormat)与 getInputSizes(imageFormat).请注意，您必须单独检查输入或输出是否支持该格式.

Don't confuse getOutputSizes(imageFormat) with getInputSizes(imageFormat). Note that you must check separately that the format is supported for input or output.

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