117 lines
3.9 KiB
Java
117 lines
3.9 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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package com.android.incallui.call;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import java.util.Collections;
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import java.util.Objects;
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import java.util.Set;
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import java.util.concurrent.ConcurrentHashMap;
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/** Class used to notify interested parties of incoming video related events. */
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public class InCallVideoCallCallbackNotifier {
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/** Singleton instance of this class. */
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private static InCallVideoCallCallbackNotifier instance = new InCallVideoCallCallbackNotifier();
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/**
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* ConcurrentHashMap constructor params: 8 is initial table size, 0.9f is load factor before
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* resizing, 1 means we only expect a single thread to access the map so make only a single shard
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*/
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private final Set<SurfaceChangeListener> surfaceChangeListeners =
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Collections.newSetFromMap(new ConcurrentHashMap<SurfaceChangeListener, Boolean>(8, 0.9f, 1));
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/** Private constructor. Instance should only be acquired through getRunningInstance(). */
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private InCallVideoCallCallbackNotifier() {}
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/** Static singleton accessor method. */
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public static InCallVideoCallCallbackNotifier getInstance() {
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return instance;
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}
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/**
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* Adds a new {@link SurfaceChangeListener}.
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*
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* @param listener The listener.
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*/
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public void addSurfaceChangeListener(@NonNull SurfaceChangeListener listener) {
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Objects.requireNonNull(listener);
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surfaceChangeListeners.add(listener);
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}
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/**
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* Remove a {@link SurfaceChangeListener}.
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*
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* @param listener The listener.
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*/
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public void removeSurfaceChangeListener(@Nullable SurfaceChangeListener listener) {
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if (listener != null) {
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surfaceChangeListeners.remove(listener);
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}
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}
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/**
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* Inform listeners of a change to peer dimensions.
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*
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* @param call The call.
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* @param width New peer width.
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* @param height New peer height.
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*/
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public void peerDimensionsChanged(DialerCall call, int width, int height) {
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for (SurfaceChangeListener listener : surfaceChangeListeners) {
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listener.onUpdatePeerDimensions(call, width, height);
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}
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}
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/**
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* Inform listeners of a change to camera dimensions.
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*
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* @param call The call.
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* @param width The new camera video width.
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* @param height The new camera video height.
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*/
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public void cameraDimensionsChanged(DialerCall call, int width, int height) {
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for (SurfaceChangeListener listener : surfaceChangeListeners) {
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listener.onCameraDimensionsChange(call, width, height);
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}
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}
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/**
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* Listener interface for any class that wants to be notified of changes to the video surfaces.
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*/
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public interface SurfaceChangeListener {
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/**
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* Called when the peer video feed changes dimensions. This can occur when the peer rotates
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* their device, changing the aspect ratio of the video signal.
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*
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* @param call The call which experienced a peer video
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*/
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void onUpdatePeerDimensions(DialerCall call, int width, int height);
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/**
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* Called when the local camera changes dimensions. This occurs when a change in camera occurs.
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*
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* @param call The call which experienced the camera dimension change.
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* @param width The new camera video width.
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* @param height The new camera video height.
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*/
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void onCameraDimensionsChange(DialerCall call, int width, int height);
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}
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}
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