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.NonNull;
21 import android.support.annotation.Nullable;
22 import android.telecom.PhoneAccountHandle;
23 import com.android.dialer.common.Assert;
24 import com.android.incallui.video.protocol.VideoCallScreen;
25 import com.android.incallui.video.protocol.VideoCallScreenDelegate;
26 import com.android.incallui.videotech.VideoTech;
27 import com.android.incallui.videotech.utils.SessionModificationState;
28 
29 /** Default video tech that is always available but doesn't do anything. */
30 public class EmptyVideoTech implements VideoTech {
31 
32   @Override
isAvailable(Context context, PhoneAccountHandle phoneAccountHandle)33   public boolean isAvailable(Context context, PhoneAccountHandle phoneAccountHandle) {
34     return false;
35   }
36 
37   @Override
isTransmittingOrReceiving()38   public boolean isTransmittingOrReceiving() {
39     return false;
40   }
41 
42   @Override
isSelfManagedCamera()43   public boolean isSelfManagedCamera() {
44     return false;
45   }
46 
47   @Override
shouldUseSurfaceView()48   public boolean shouldUseSurfaceView() {
49     return false;
50   }
51 
52   @Override
isPaused()53   public boolean isPaused() {
54     return false;
55   }
56 
57   @Override
createVideoCallScreenDelegate( Context context, VideoCallScreen videoCallScreen)58   public VideoCallScreenDelegate createVideoCallScreenDelegate(
59       Context context, VideoCallScreen videoCallScreen) {
60     throw Assert.createUnsupportedOperationFailException();
61   }
62 
63   @Override
onCallStateChanged( Context context, int newState, PhoneAccountHandle phoneAccountHandle)64   public void onCallStateChanged(
65       Context context, int newState, PhoneAccountHandle phoneAccountHandle) {}
66 
67   @Override
onRemovedFromCallList()68   public void onRemovedFromCallList() {}
69 
70   @Override
getSessionModificationState()71   public int getSessionModificationState() {
72     return SessionModificationState.NO_REQUEST;
73   }
74 
75   @Override
upgradeToVideo(@onNull Context context)76   public void upgradeToVideo(@NonNull Context context) {}
77 
78   @Override
acceptVideoRequest(@onNull Context context)79   public void acceptVideoRequest(@NonNull Context context) {}
80 
81   @Override
acceptVideoRequestAsAudio()82   public void acceptVideoRequestAsAudio() {}
83 
84   @Override
declineVideoRequest()85   public void declineVideoRequest() {}
86 
87   @Override
isTransmitting()88   public boolean isTransmitting() {
89     return false;
90   }
91 
92   @Override
stopTransmission()93   public void stopTransmission() {}
94 
95   @Override
resumeTransmission(@onNull Context context)96   public void resumeTransmission(@NonNull Context context) {}
97 
98   @Override
pause()99   public void pause() {}
100 
101   @Override
unpause()102   public void unpause() {}
103 
104   @Override
setCamera(@ullable String cameraId)105   public void setCamera(@Nullable String cameraId) {}
106 
107   @Override
setDeviceOrientation(int rotation)108   public void setDeviceOrientation(int rotation) {}
109 
110   @Override
becomePrimary()111   public void becomePrimary() {}
112 
113   @Override
getVideoTechType()114   public com.android.dialer.logging.VideoTech.Type getVideoTechType() {
115     return com.android.dialer.logging.VideoTech.Type.NONE;
116   }
117 }
118