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package com.android.ex.camera2.portability;
import android.hardware.Camera;
/**
* The device info for all attached cameras.
*/
public interface CameraDeviceInfo {
static final int NO_DEVICE = -1;
/**
* @param cameraId Which device to interrogate.
* @return The static characteristics of the specified device, or {@code null} on error.
*/
Characteristics getCharacteristics(int cameraId);
/**
* @return The total number of the available camera devices.
*/
int getNumberOfCameras();
/**
* @return The first (lowest) ID of the back cameras or {@code NO_DEVICE}
* if not available.
*/
int getFirstBackCameraId();
/**
* @return The first (lowest) ID of the front cameras or {@code NO_DEVICE}
* if not available.
*/
int getFirstFrontCameraId();
/**
* Device characteristics for a single camera.
*/
public interface Characteristics {
/**
* @return Whether the camera faces the back of the device.
*/
boolean isFacingBack();
/**
* @return Whether the camera faces the device's screen.
*/
boolean isFacingFront();
/**
* @return The camera image orientation, or the clockwise rotation angle
* that must be applied to display it in its natural orientation
* (in degrees, and always a multiple of 90).
*/
int getSensorOrientation();
/**
* @return Whether the shutter sound can be disabled.
*/
boolean canDisableShutterSound();
}
}
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