CameraInfo.java
/*
* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.camera.core;
import android.view.Surface;
import androidx.annotation.NonNull;
import androidx.lifecycle.LiveData;
/**
* An interface for retrieving camera information.
*
* <p>Applications can retrieve an instance via {@link CameraX#getCameraInfo(CameraX.LensFacing)}.
*/
public interface CameraInfo {
/**
* Returns the sensor rotation, in degrees, relative to the device's "natural" rotation.
*
* @return The sensor orientation in degrees.
* @see Surface#ROTATION_0 the natural orientation of the device.
*/
int getSensorRotationDegrees();
/**
* Returns the sensor rotation, in degrees, relative to the given rotation value.
*
* <p>Valid values for the relative rotation are {@link Surface#ROTATION_0}, {@link
* Surface#ROTATION_90}, {@link Surface#ROTATION_180}, {@link Surface#ROTATION_270}.
*
* @param relativeRotation The rotation relative to which the output will be calculated.
* @return The sensor orientation in degrees.
*/
int getSensorRotationDegrees(@ImageOutputConfig.RotationValue int relativeRotation);
/** Returns if flash unit is available or not. */
@NonNull
LiveData<Boolean> isFlashAvailable();
}