android camera预览帧,android camera2处理每一帧并显示其预览

我使用

https://github.com/googlesamples/android-Camera2Basic,但尝试修改它,我可以访问每个帧,然后在surfaceview上绘制.

我明白了,我应该添加额外的表面(ImageReader.getSurface()),并在此回调中从中读取帧：

private final ImageReader.OnImageAvailableListener mOnImageAvailableListener

= new ImageReader.OnImageAvailableListener() {

@Override

public void onImageAvailable(ImageReader reader) {

Log.d("Img", "onImageAvailable");

mBackgroundHandler.post(new ImageSaver(reader.acquireNextImage(), mFile));

}

};

问题是只有当用户捕获图像而不是从摄像机发送到预览屏幕的eacg帧时,才会调用此回调.

这是我试图添加的内容：

private void createCameraPreviewSession() {

try {

SurfaceTexture texture = mTextureView.getSurfaceTexture();

assert texture != null;

// We configure the size of default buffer to be the size of camera preview we want.

textu