I have an app that does some processing to camera preview frames
before displaying them to the user. I'm currently using preview
callbacks to access the image data, but the problem I have is that the
onPreviewFrame() function stops getting called if you start recording
video using a MediaRecorder, and I want the processing to continue
when video is being recorded. I've tried doing the following:
public static Bitmap convertViewToBitmap(View view)
{
Bitmap bitmap =
Bitmap.createBitmap(view.getWidth(),view.getHeight(),
Bitmap.Config.ARGB_8888);
view.draw(new Canvas(bitmap));
return bitmap;
}
to convert the preview surface to a bitmap, but when I pass the
preview SurfaceView to the function it returns an all-black bitmap (it
works when I test it on normal views though). Is there any other way I
can access the image data if preview callbacks are not available? Any
buffer or bitmap somewhere that I can read?
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