| /* |
| * Copyright (C) 2014 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 com.android.incallui; |
| |
| import android.content.Context; |
| import android.graphics.SurfaceTexture; |
| import android.hardware.camera2.CameraAccessException; |
| import android.hardware.camera2.CameraCharacteristics; |
| import android.hardware.camera2.CameraManager; |
| import android.hardware.camera2.params.StreamConfigurationMap; |
| import android.util.Size; |
| |
| import java.lang.String; |
| import java.util.Collections; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.Set; |
| |
| /** |
| * Used to track which camera is used for outgoing video. |
| */ |
| public class InCallCameraManager { |
| |
| public interface Listener { |
| void onActiveCameraSelectionChanged(boolean isUsingFrontFacingCamera); |
| } |
| |
| private final Set<Listener> mCameraSelectionListeners = Collections. |
| newSetFromMap(new ConcurrentHashMap<Listener, Boolean>(8,0.9f,1)); |
| |
| /** |
| * The camera ID for the front facing camera. |
| */ |
| private String mFrontFacingCameraId; |
| |
| /** |
| * The camera ID for the rear facing camera. |
| */ |
| private String mRearFacingCameraId; |
| |
| /** |
| * The currently active camera. |
| */ |
| private boolean mUseFrontFacingCamera; |
| |
| /** |
| * Indicates whether the list of cameras has been initialized yet. Initialization is delayed |
| * until a video call is present. |
| */ |
| private boolean mIsInitialized = false; |
| |
| /** |
| * The context. |
| */ |
| private Context mContext; |
| |
| /** |
| * Initializes the InCall CameraManager. |
| * |
| * @param context The current context. |
| */ |
| public InCallCameraManager(Context context) { |
| mUseFrontFacingCamera = true; |
| mContext = context; |
| } |
| |
| /** |
| * Sets whether the front facing camera should be used or not. |
| * |
| * @param useFrontFacingCamera {@code True} if the front facing camera is to be used. |
| */ |
| public void setUseFrontFacingCamera(boolean useFrontFacingCamera) { |
| mUseFrontFacingCamera = useFrontFacingCamera; |
| for (Listener listener : mCameraSelectionListeners) { |
| listener.onActiveCameraSelectionChanged(mUseFrontFacingCamera); |
| } |
| } |
| |
| /** |
| * Determines whether the front facing camera is currently in use. |
| * |
| * @return {@code True} if the front facing camera is in use. |
| */ |
| public boolean isUsingFrontFacingCamera() { |
| return mUseFrontFacingCamera; |
| } |
| |
| /** |
| * Determines the active camera ID. |
| * |
| * @return The active camera ID. |
| */ |
| public String getActiveCameraId() { |
| maybeInitializeCameraList(mContext); |
| |
| if (mUseFrontFacingCamera) { |
| return mFrontFacingCameraId; |
| } else { |
| return mRearFacingCameraId; |
| } |
| } |
| |
| /** |
| * Get the list of cameras available for use. |
| * |
| * @param context The context. |
| */ |
| private void maybeInitializeCameraList(Context context) { |
| if (mIsInitialized || context == null) { |
| return; |
| } |
| |
| Log.v(this, "initializeCameraList"); |
| |
| CameraManager cameraManager = null; |
| try { |
| cameraManager = (CameraManager) context.getSystemService( |
| Context.CAMERA_SERVICE); |
| } catch (Exception e) { |
| Log.e(this, "Could not get camera service."); |
| return; |
| } |
| |
| if (cameraManager == null) { |
| return; |
| } |
| |
| String[] cameraIds = {}; |
| try { |
| cameraIds = cameraManager.getCameraIdList(); |
| } catch (CameraAccessException e) { |
| Log.d(this, "Could not access camera: "+e); |
| // Camera disabled by device policy. |
| return; |
| } |
| |
| for (int i = 0; i < cameraIds.length; i++) { |
| CameraCharacteristics c = null; |
| try { |
| c = cameraManager.getCameraCharacteristics(cameraIds[i]); |
| } catch (IllegalArgumentException e) { |
| // Device Id is unknown. |
| } catch (CameraAccessException e) { |
| // Camera disabled by device policy. |
| } |
| if (c != null) { |
| int facingCharacteristic = c.get(CameraCharacteristics.LENS_FACING); |
| if (facingCharacteristic == CameraCharacteristics.LENS_FACING_FRONT) { |
| mFrontFacingCameraId = cameraIds[i]; |
| } else if (facingCharacteristic == CameraCharacteristics.LENS_FACING_BACK) { |
| mRearFacingCameraId = cameraIds[i]; |
| } |
| } |
| } |
| |
| mIsInitialized = true; |
| Log.v(this, "initializeCameraList : done"); |
| } |
| |
| public void addCameraSelectionListener(Listener listener) { |
| if (listener != null) { |
| mCameraSelectionListeners.add(listener); |
| } |
| } |
| |
| public void removeCameraSelectionListener(Listener listener) { |
| if (listener != null) { |
| mCameraSelectionListeners.remove(listener); |
| } |
| } |
| } |