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.empty; 18 19 import android.content.Context; 20 import android.support.annotation.Nullable; 21 import com.android.dialer.common.Assert; 22 import com.android.incallui.video.protocol.VideoCallScreen; 23 import com.android.incallui.video.protocol.VideoCallScreenDelegate; 24 import com.android.incallui.videotech.VideoTech; 25 import com.android.incallui.videotech.utils.SessionModificationState; 26 27 /** Default video tech that is always available but doesn't do anything. */ 28 public class EmptyVideoTech implements VideoTech { 29 30 @Override isAvailable(Context context)31 public boolean isAvailable(Context context) { 32 return false; 33 } 34 35 @Override isTransmittingOrReceiving()36 public boolean isTransmittingOrReceiving() { 37 return false; 38 } 39 40 @Override isSelfManagedCamera()41 public boolean isSelfManagedCamera() { 42 return false; 43 } 44 45 @Override shouldUseSurfaceView()46 public boolean shouldUseSurfaceView() { 47 return false; 48 } 49 50 @Override createVideoCallScreenDelegate( Context context, VideoCallScreen videoCallScreen)51 public VideoCallScreenDelegate createVideoCallScreenDelegate( 52 Context context, VideoCallScreen videoCallScreen) { 53 throw Assert.createUnsupportedOperationFailException(); 54 } 55 56 @Override onCallStateChanged(Context context, int newState)57 public void onCallStateChanged(Context context, int newState) {} 58 59 @Override onRemovedFromCallList()60 public void onRemovedFromCallList() {} 61 62 @Override getSessionModificationState()63 public int getSessionModificationState() { 64 return SessionModificationState.NO_REQUEST; 65 } 66 67 @Override upgradeToVideo()68 public void upgradeToVideo() {} 69 70 @Override acceptVideoRequest()71 public void acceptVideoRequest() {} 72 73 @Override acceptVideoRequestAsAudio()74 public void acceptVideoRequestAsAudio() {} 75 76 @Override declineVideoRequest()77 public void declineVideoRequest() {} 78 79 @Override isTransmitting()80 public boolean isTransmitting() { 81 return false; 82 } 83 84 @Override stopTransmission()85 public void stopTransmission() {} 86 87 @Override resumeTransmission()88 public void resumeTransmission() {} 89 90 @Override pause()91 public void pause() {} 92 93 @Override unpause()94 public void unpause() {} 95 96 @Override setCamera(@ullable String cameraId)97 public void setCamera(@Nullable String cameraId) {} 98 99 @Override setDeviceOrientation(int rotation)100 public void setDeviceOrientation(int rotation) {} 101 } 102