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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License
     15  */
     16 
     17 package com.android.incallui.videotech;
     18 
     19 import android.content.Context;
     20 import com.android.incallui.video.protocol.VideoCallScreen;
     21 import com.android.incallui.video.protocol.VideoCallScreenDelegate;
     22 import com.android.incallui.videotech.utils.SessionModificationState;
     23 
     24 /** Video calling interface. */
     25 public interface VideoTech {
     26 
     27   boolean isAvailable(Context context);
     28 
     29   boolean isTransmittingOrReceiving();
     30 
     31   /**
     32    * Determines if the answer video UI should open the camera directly instead of letting the video
     33    * tech manage the camera.
     34    */
     35   boolean isSelfManagedCamera();
     36 
     37   boolean shouldUseSurfaceView();
     38 
     39   VideoCallScreenDelegate createVideoCallScreenDelegate(
     40       Context context, VideoCallScreen videoCallScreen);
     41 
     42   void onCallStateChanged(Context context, int newState);
     43 
     44   @SessionModificationState
     45   int getSessionModificationState();
     46 
     47   void upgradeToVideo();
     48 
     49   void acceptVideoRequest();
     50 
     51   void acceptVideoRequestAsAudio();
     52 
     53   void declineVideoRequest();
     54 
     55   boolean isTransmitting();
     56 
     57   void stopTransmission();
     58 
     59   void resumeTransmission();
     60 
     61   void pause();
     62 
     63   void unpause();
     64 
     65   void setCamera(String cameraId);
     66 
     67   void setDeviceOrientation(int rotation);
     68 
     69   /** Listener for video call events. */
     70   interface VideoTechListener {
     71 
     72     void onVideoTechStateChanged();
     73 
     74     void onSessionModificationStateChanged();
     75 
     76     void onCameraDimensionsChanged(int width, int height);
     77 
     78     void onPeerDimensionsChanged(int width, int height);
     79 
     80     void onVideoUpgradeRequestReceived();
     81 
     82     void onUpgradedToVideo(boolean switchToSpeaker);
     83   }
     84 }
     85