| /* |
| * Copyright 2020 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 androidx.mediarouter.media; |
| |
| import android.content.Context; |
| import android.media.MediaRoute2Info; |
| import android.media.MediaRouter2; |
| import android.os.Handler; |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| import androidx.annotation.RequiresApi; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.Executor; |
| import java.util.stream.Collectors; |
| |
| /** |
| * Provides routes and RouteController by using MediaRouter2. |
| * This provider is added only when {@link MediaRouter#enableTransfer()} is called. |
| */ |
| @RequiresApi(30) |
| @SuppressWarnings({"unused", "ClassCanBeStatic"}) |
| class MediaRoute2Provider extends MediaRouteProvider { |
| private final MediaRouter2 mMediaRouter2Fwk; |
| private final MediaRouter2.RouteCallback mMr2RouteCallbackFwk; |
| private final Handler mHandler; |
| private final Executor mHandlerExecutor; |
| |
| private List<MediaRoute2Info> mRoutes = new ArrayList<>(); |
| |
| MediaRoute2Provider(@NonNull Context context, @NonNull MediaRouter2 mediaRouter2Fwk) { |
| super(context); |
| mMediaRouter2Fwk = mediaRouter2Fwk; |
| mMr2RouteCallbackFwk = new RouteCallback(); |
| mHandler = new Handler(); |
| mHandlerExecutor = mHandler::post; |
| } |
| |
| @Override |
| public void onDiscoveryRequestChanged(@Nullable MediaRouteDiscoveryRequest request) { |
| // TODO: Also Handle TransferCallback here |
| if (MediaRouter.getGlobalCallbackCount() > 0) { |
| mMediaRouter2Fwk.registerRouteCallback(mHandlerExecutor, mMr2RouteCallbackFwk, |
| MediaRouter2Utils.toDiscoveryPreference(request)); |
| } else { |
| mMediaRouter2Fwk.unregisterRouteCallback(mMr2RouteCallbackFwk); |
| } |
| } |
| |
| @Nullable |
| @Override |
| public RouteController onCreateRouteController(@NonNull String routeId) { |
| return new MediaRoute2Controller(routeId, null); |
| } |
| |
| @Nullable |
| @Override |
| public RouteController onCreateRouteController(@NonNull String routeId, |
| @NonNull String routeGroupId) { |
| return new MediaRoute2Controller(routeId, routeGroupId); |
| } |
| |
| @Nullable |
| @Override |
| public DynamicGroupRouteController onCreateDynamicGroupRouteController( |
| @NonNull String initialMemberRouteId) { |
| return new DynamicMediaRoute2Controller(initialMemberRouteId); |
| } |
| |
| protected void refreshRoutes() { |
| // Syetem routes should not be published by this provider. |
| List<MediaRoute2Info> newRoutes = mMediaRouter2Fwk.getRoutes().stream().distinct() |
| .filter(r -> !r.isSystemRoute()) |
| .collect(Collectors.toList()); |
| |
| if (newRoutes.equals(mRoutes)) { |
| return; |
| } |
| mRoutes = newRoutes; |
| |
| List<MediaRouteDescriptor> routeDescriptors = mRoutes.stream() |
| .map(MediaRouter2Utils::toMediaRouteDescriptor) |
| .collect(Collectors.toList()); |
| MediaRouteProviderDescriptor descriptor = new MediaRouteProviderDescriptor.Builder() |
| .setSupportsDynamicGroupRoute(true) |
| .addRoutes(routeDescriptors) |
| .build(); |
| setDescriptor(descriptor); |
| } |
| |
| private class RouteCallback extends MediaRouter2.RouteCallback { |
| RouteCallback() {} |
| |
| @Override |
| public void onRoutesAdded(@NonNull List<MediaRoute2Info> routes) { |
| refreshRoutes(); |
| } |
| |
| @Override |
| public void onRoutesRemoved(@NonNull List<MediaRoute2Info> routes) { |
| refreshRoutes(); |
| } |
| |
| @Override |
| public void onRoutesChanged(@NonNull List<MediaRoute2Info> routes) { |
| refreshRoutes(); |
| } |
| } |
| |
| // TODO: Implement this class by overriding every public method in RouteController. |
| private class MediaRoute2Controller extends RouteController { |
| final String mRouteId; |
| final String mRouteGroupId; |
| |
| MediaRoute2Controller(@NonNull String routeId, @Nullable String routeGroupId) { |
| mRouteId = routeId; |
| mRouteGroupId = routeGroupId; |
| } |
| } |
| |
| // TODO: Implement this class by overriding every public method in DynamicGroupRouteController. |
| private class DynamicMediaRoute2Controller extends DynamicGroupRouteController { |
| final String mInitialMemberRouteId; |
| |
| DynamicMediaRoute2Controller(@NonNull String initialMemberRouteId) { |
| mInitialMemberRouteId = initialMemberRouteId; |
| } |
| |
| @Override |
| public void onUpdateMemberRoutes(@Nullable List<String> routeIds) {} |
| |
| @Override |
| public void onAddMemberRoute(@NonNull String routeId) {} |
| |
| @Override |
| public void onRemoveMemberRoute(String routeId) {} |
| } |
| } |