I'm working on a project which using camera2 API. When I get the list of supported output preview size using:
StreamConfigurationMap map = characteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
Size[] choices = map.getOutputSizes(SurfaceTexture.class);
the output size list always return values which have width>height despite the fact that screen's width
When I use getResources().getDisplayMetrics() (or any similar method) to check width/height it's always return width
And based on the value I see that in 2 cases the width/height are likely swap their value. (w: 1920, h: 1080 preview size. w: 1080, h: 1920 screen size).
So what is the different between them? Please help me!
The camera on phones is traditionally built for landscape orientation of the device. We use rotation of 90° to display camera frames correctly when the device is held in portrait orientation.
Here is the detailed explanation: https://developer.android.com/training/camera/cameradirect.html#TaskOrientation