Merge changes from topic "trm-impl-rvc" into rvc-dev am: 7ff127e897

Change-Id: I2da5c620d9b7b69d3e37200fd14429f3a08ff1f9

media/java/android/media/tv/tunerresourcemanager/ResourceClientProfile.java

@@ -78,7 +78,8 @@ public final class ResourceClientProfile implements Parcelable {
      *                {@link android.media.tv.TvInputService.PRIORITY_HINT_USE_CASE_TYPE_LIVE}
      *                {@link android.media.tv.TvInputService.PRIORITY_HINT_USE_CASE_TYPE_RECORD}.
      *                New [use case : priority value] pair can be defined in the manifest by the
-     *                OEM. Any undefined use case would cause IllegalArgumentException.
+     *                OEM. The id of the useCaseVendor should be passed through this parameter. Any
+     *                undefined use case would cause IllegalArgumentException.
      */
     public ResourceClientProfile(@NonNull String tvInputSessionId,
                                  int useCase) {

services/core/java/com/android/server/tv/tunerresourcemanager/ClientProfile.java

@@ -13,9 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
 package com.android.server.tv.tunerresourcemanager;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
   * A client profile object used by the Tuner Resource Manager to record the registered clients'
   * information.
@@ -23,12 +25,14 @@ package com.android.server.tv.tunerresourcemanager;
   * @hide
   */
 public final class ClientProfile {
+
     public static final int INVALID_GROUP_ID = -1;
+
     /**
      * Client id sent to the client when registering with
      * {@link #registerClientProfile(ResourceClientProfile, TunerResourceManagerCallback, int[])}
      */
-    private final int mClientId;
+    private final int mId;
 
     /**
      * see {@link ResourceClientProfile}
@@ -41,7 +45,7 @@ public final class ClientProfile {
     private final int mUseCase;
 
     /**
-     * Process id queried from {@link TvInputManager#}
+     * Process id queried from {@link TvInputManager#getPid(String)}.
      */
     private final int mProcessId;
 
@@ -58,6 +62,11 @@ public final class ClientProfile {
      */
     private int mNiceValue;
 
+    /**
+     * List of the frontend ids that are used by the current client.
+     */
+    private List<Integer> mUsingFrontendIds = new ArrayList<>();
+
     /**
      * Optional arbitrary priority value given by the client.
      *
@@ -66,18 +75,15 @@ public final class ClientProfile {
      */
     private int mPriority;
 
-    private ClientProfile(ClientProfileBuilder builder) {
+    private ClientProfile(Builder builder) {
-        this.mClientId = builder.mClientId;
+        this.mId = builder.mId;
         this.mTvInputSessionId = builder.mTvInputSessionId;
         this.mUseCase = builder.mUseCase;
         this.mProcessId = builder.mProcessId;
-        this.mGroupId = builder.mGroupId;
-        this.mNiceValue = builder.mNiceValue;
-        this.mPriority = builder.mPriority;
     }
 
-    public int getClientId() {
+    public int getId() {
-        return mClientId;
+        return mId;
     }
 
     public String getTvInputSessionId() {
@@ -116,26 +122,47 @@ public final class ClientProfile {
         mNiceValue = niceValue;
     }
 
+    /**
+     * Set when the client starts to use a frontend.
+     *
+     * @param frontendId being used.
+     */
+    public void useFrontend(int frontendId) {
+        mUsingFrontendIds.add(frontendId);
+    }
+
+    public List<Integer> getInUseFrontendIds() {
+        return mUsingFrontendIds;
+    }
+
+    /**
+     * Called when the client released a frontend.
+     *
+     * <p>This could happen when client resource reclaimed.
+     *
+     * @param frontendId being released.
+     */
+    public void releaseFrontend(int frontendId) {
+        mUsingFrontendIds.remove(frontendId);
+    }
+
     @Override
     public String toString() {
-        return "ClientProfile: " + this.mClientId + ", " + this.mTvInputSessionId + ", "
+        return "ClientProfile[id=" + this.mId + ", tvInputSessionId=" + this.mTvInputSessionId
-                + this.mUseCase + ", " + this.mProcessId;
+                + ", useCase=" + this.mUseCase + ", processId=" + this.mProcessId + "]";
     }
 
     /**
     * Builder class for {@link ClientProfile}.
     */
-    public static class ClientProfileBuilder {
+    public static class Builder {
-        private final int mClientId;
+        private final int mId;
         private String mTvInputSessionId;
         private int mUseCase;
         private int mProcessId;
-        private int mGroupId;
-        private int mNiceValue;
-        private int mPriority;
 
-        ClientProfileBuilder(int clientId) {
+        Builder(int id) {
-            this.mClientId = clientId;
+            this.mId = id;
         }
 
         /**
@@ -143,7 +170,7 @@ public final class ClientProfile {
           *
           * @param useCase the useCase of the client.
           */
-        public ClientProfileBuilder useCase(int useCase) {
+        public Builder useCase(int useCase) {
             this.mUseCase = useCase;
             return this;
         }
@@ -153,7 +180,7 @@ public final class ClientProfile {
           *
           * @param tvInputSessionId the id of the tv input session.
           */
-        public ClientProfileBuilder tvInputSessionId(String tvInputSessionId) {
+        public Builder tvInputSessionId(String tvInputSessionId) {
             this.mTvInputSessionId = tvInputSessionId;
             return this;
         }
@@ -163,42 +190,11 @@ public final class ClientProfile {
           *
           * @param processId the id of process.
           */
-        public ClientProfileBuilder processId(int processId) {
+        public Builder processId(int processId) {
             this.mProcessId = processId;
             return this;
         }
 
-
-        /**
-          * Builder for {@link ClientProfile}.
-          *
-          * @param groupId the id of the group that shares the same resource.
-          */
-        public ClientProfileBuilder groupId(int groupId) {
-            this.mGroupId = groupId;
-            return this;
-        }
-
-        /**
-          * Builder for {@link ClientProfile}.
-          *
-          * @param niceValue the nice value of the client.
-          */
-        public ClientProfileBuilder niceValue(int niceValue) {
-            this.mNiceValue = niceValue;
-            return this;
-        }
-
-        /**
-          * Builder for {@link ClientProfile}.
-          *
-          * @param priority the priority value of the client.
-          */
-        public ClientProfileBuilder priority(int priority) {
-            this.mPriority = priority;
-            return this;
-        }
-
         /**
           * Build a {@link ClientProfile}.
           *

services/core/java/com/android/server/tv/tunerresourcemanager/FrontendResource.java

@@ -0,0 +1,204 @@
+/*
+ * 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 com.android.server.tv.tunerresourcemanager;
+
+import android.annotation.Nullable;
+import android.media.tv.tuner.frontend.FrontendSettings.Type;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * A frontend resource object used by the Tuner Resource Manager to record the tuner frontend
+ * information.
+ *
+ * @hide
+ */
+public final class FrontendResource {
+    public static final int INVALID_OWNER_ID = -1;
+
+    /**
+     * Id of the current frontend. Should not be changed and should be aligned with the driver level
+     * implementation.
+     */
+    private final int mId;
+
+    /**
+     * see {@link android.media.tv.tuner.frontend.FrontendSettings.Type}
+     */
+    @Type private final int mType;
+
+    /**
+     * The exclusive group id of the FE. FEs under the same id can't be used at the same time.
+     */
+    private final int mExclusiveGroupId;
+
+    /**
+     * An array to save all the FE ids under the same exclisive group.
+     */
+    private List<Integer> mExclusiveGroupMemberFeIds = new ArrayList<>();
+
+    /**
+     * If the current resource is in use. Once resources under the same exclusive group id is in use
+     * all other resources in the same group would be considered in use.
+     */
+    private boolean mIsInUse;
+
+    /**
+     * The owner client's id if this resource is occupied. Owner of the resource under the same
+     * exclusive group id would be considered as the whole group's owner.
+     */
+    private int mOwnerClientId = INVALID_OWNER_ID;
+
+    private FrontendResource(Builder builder) {
+        this.mId = builder.mId;
+        this.mType = builder.mType;
+        this.mExclusiveGroupId = builder.mExclusiveGroupId;
+    }
+
+    public int getId() {
+        return mId;
+    }
+
+    public int getType() {
+        return mType;
+    }
+
+    public int getExclusiveGroupId() {
+        return mExclusiveGroupId;
+    }
+
+    public List<Integer> getExclusiveGroupMemberFeIds() {
+        return mExclusiveGroupMemberFeIds;
+    }
+
+    /**
+     * Add one id into the exclusive group member id list.
+     *
+     * @param id the id to be added.
+     */
+    public void addExclusiveGroupMemberFeId(int id) {
+        mExclusiveGroupMemberFeIds.add(id);
+    }
+
+    /**
+     * Add one id list to the exclusive group member id list.
+     *
+     * @param ids the id list to be added.
+     */
+    public void addExclusiveGroupMemberFeId(List<Integer> ids) {
+        mExclusiveGroupMemberFeIds.addAll(ids);
+    }
+
+    /**
+     * Remove one id from the exclusive group member id list.
+     *
+     * @param id the id to be removed.
+     */
+    public void removeExclusiveGroupMemberFeId(int id) {
+        mExclusiveGroupMemberFeIds.remove(new Integer(id));
+    }
+
+    public boolean isInUse() {
+        return mIsInUse;
+    }
+
+    public int getOwnerClientId() {
+        return mOwnerClientId;
+    }
+
+    /**
+     * Set an owner client on the resource.
+     *
+     * @param ownerClientId the id of the owner client.
+     */
+    public void setOwner(int ownerClientId) {
+        mIsInUse = true;
+        mOwnerClientId = ownerClientId;
+    }
+
+    /**
+     * Remove an owner client from the resource.
+     */
+    public void removeOwner() {
+        mIsInUse = false;
+        mOwnerClientId = INVALID_OWNER_ID;
+    }
+
+    @Override
+    public String toString() {
+        return "FrontendResource[id=" + this.mId + ", type=" + this.mType
+                + ", exclusiveGId=" + this.mExclusiveGroupId + ", exclusiveGMemeberIds="
+                + Arrays.toString(this.mExclusiveGroupMemberFeIds.toArray())
+                + ", isInUse=" + this.mIsInUse + ", ownerClientId=" + this.mOwnerClientId + "]";
+    }
+
+    @Override
+    public boolean equals(@Nullable Object o) {
+        if (o instanceof FrontendResource) {
+            FrontendResource fe = (FrontendResource) o;
+            return mId == fe.getId() && mType == fe.getType()
+                    && mExclusiveGroupId == fe.getExclusiveGroupId()
+                    && mExclusiveGroupMemberFeIds.equals(fe.getExclusiveGroupMemberFeIds())
+                    && mIsInUse == fe.isInUse() && mOwnerClientId == fe.getOwnerClientId();
+        }
+        return false;
+    }
+
+    /**
+     * Builder class for {@link FrontendResource}.
+     */
+    public static class Builder {
+        private final int mId;
+        @Type private int mType;
+        private int mExclusiveGroupId;
+
+        Builder(int id) {
+            this.mId = id;
+        }
+
+        /**
+         * Builder for {@link FrontendResource}.
+         *
+         * @param type the type of the frontend. See {@link Type}
+         */
+        public Builder type(@Type int type) {
+            this.mType = type;
+            return this;
+        }
+
+        /**
+         * Builder for {@link FrontendResource}.
+         *
+         * @param exclusiveGroupId the id of exclusive group.
+         */
+        public Builder exclusiveGroupId(int exclusiveGroupId) {
+            this.mExclusiveGroupId = exclusiveGroupId;
+            return this;
+        }
+
+        /**
+         * Build a {@link FrontendResource}.
+         *
+         * @return {@link FrontendResource}.
+         */
+        public FrontendResource build() {
+            FrontendResource frontendResource = new FrontendResource(this);
+            return frontendResource;
+        }
+    }
+}

services/core/java/com/android/server/tv/tunerresourcemanager/TunerResourceManagerService.java

@@ -28,32 +28,48 @@ import android.media.tv.tunerresourcemanager.TunerFrontendInfo;
 import android.media.tv.tunerresourcemanager.TunerFrontendRequest;
 import android.media.tv.tunerresourcemanager.TunerLnbRequest;
 import android.media.tv.tunerresourcemanager.TunerResourceManager;
+import android.os.Binder;
 import android.os.RemoteException;
 import android.util.Log;
 import android.util.Slog;
 import android.util.SparseArray;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.server.SystemService;
 
 import java.util.ArrayList;
 import java.util.List;
 
 /**
-  * This class provides a system service that manages the TV tuner resources.
+ * This class provides a system service that manages the TV tuner resources.
-  *
+ *
-  * @hide
+ * @hide
-  */
+ */
 public class TunerResourceManagerService extends SystemService {
     private static final String TAG = "TunerResourceManagerService";
     private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
 
-    private SparseArray<ClientProfile> mClientProfiles = new SparseArray<>();
+    public static final int INVALID_CLIENT_ID = -1;
-    private SparseArray<IResourcesReclaimListener> mListeners = new SparseArray<>();
+    private static final int MAX_CLIENT_PRIORITY = 1000;
-    private int mNextUnusedFrontendId = 0;
+
-    private List<Integer> mReleasedClientId = new ArrayList<Integer>();
+    // Array of the registered client profiles
+    @VisibleForTesting private SparseArray<ClientProfile> mClientProfiles = new SparseArray<>();
+    private int mNextUnusedClientId = 0;
+    private List<Integer> mRegisteredClientIds = new ArrayList<Integer>();
+
+    // Array of the current available frontend resources
+    @VisibleForTesting
+    private SparseArray<FrontendResource> mFrontendResources = new SparseArray<>();
+    // Array of the current available frontend ids
     private List<Integer> mAvailableFrontendIds = new ArrayList<Integer>();
 
+    private SparseArray<IResourcesReclaimListener> mListeners = new SparseArray<>();
+
     private TvInputManager mManager;
+    private UseCasePriorityHints mPriorityCongfig = new UseCasePriorityHints();
+
+    // Used to synchronize the access to the service.
+    private final Object mLock = new Object();
 
     public TunerResourceManagerService(@Nullable Context context) {
         super(context);
@@ -61,97 +77,78 @@ public class TunerResourceManagerService extends SystemService {
 
     @Override
     public void onStart() {
-        publishBinderService(Context.TV_TUNER_RESOURCE_MGR_SERVICE, new BinderService());
+        onStart(false /*isForTesting*/);
-        mManager = (TvInputManager) getContext()
+    }
-                .getSystemService(Context.TV_INPUT_SERVICE);
+
+    @VisibleForTesting
+    protected void onStart(boolean isForTesting) {
+        if (!isForTesting) {
+            publishBinderService(Context.TV_TUNER_RESOURCE_MGR_SERVICE, new BinderService());
+        }
+        mManager = (TvInputManager) getContext().getSystemService(Context.TV_INPUT_SERVICE);
+        mPriorityCongfig.parse();
     }
 
     private final class BinderService extends ITunerResourceManager.Stub {
         @Override
         public void registerClientProfile(@NonNull ResourceClientProfile profile,
-                            @NonNull IResourcesReclaimListener listener,
+                @NonNull IResourcesReclaimListener listener, @NonNull int[] clientId)
-                            @NonNull int[] clientId) {
+                throws RemoteException {
-            if (DEBUG) {
+            enforceAccessPermission();
-                Slog.d(TAG, "registerClientProfile(clientProfile=" + profile + ")");
+            if (profile == null) {
+                throw new RemoteException("ResourceClientProfile can't be null");
             }
 
-            // TODO tell if the client already exists
+            if (clientId == null) {
-            if (mReleasedClientId.isEmpty()) {
+                throw new RemoteException("clientId can't be null!");
-                clientId[0] = mNextUnusedFrontendId++;
-            } else {
-                clientId[0] = mReleasedClientId.get(0);
-                mReleasedClientId.remove(0);
             }
 
-            if (mManager == null) {
+            if (!mPriorityCongfig.isDefinedUseCase(profile.getUseCase())) {
-                Slog.e(TAG, "TvInputManager is null. Can't register client profile.");
+                throw new RemoteException("Use undefined client use case:" + profile.getUseCase());
-                return;
             }
 
-            int callingPid = mManager.getClientPid(profile.getTvInputSessionId());
+            synchronized (mLock) {
-
+                registerClientProfileInternal(profile, listener, clientId);
-            ClientProfile clientProfile = new ClientProfile.ClientProfileBuilder(
+            }
-                    clientId[0])
-                    .tvInputSessionId(profile.getTvInputSessionId())
-                    .useCase(profile.getUseCase())
-                    .processId(callingPid)
-                    .build();
-            mClientProfiles.append(clientId[0], clientProfile);
-            mListeners.append(clientId[0], listener);
         }
 
         @Override
-        public void unregisterClientProfile(int clientId) {
+        public void unregisterClientProfile(int clientId) throws RemoteException {
-            if (DEBUG) {
+            enforceAccessPermission();
-                Slog.d(TAG, "unregisterClientProfile(clientId=" + clientId + ")");
+            synchronized (mLock) {
+                if (!checkClientExists(clientId)) {
+                    Slog.e(TAG, "Unregistering non exists client:" + clientId);
+                    return;
+                }
+                unregisterClientProfileInternal(clientId);
             }
-
-            mClientProfiles.remove(clientId);
-            mListeners.remove(clientId);
-            mReleasedClientId.add(clientId);
         }
 
         @Override
         public boolean updateClientPriority(int clientId, int priority, int niceValue) {
-            if (DEBUG) {
+            enforceAccessPermission();
-                Slog.d(TAG, "updateClientPriority(clientId=" + clientId
+            synchronized (mLock) {
-                        + ", priority=" + priority + ", niceValue=" + niceValue + ")");
+                return updateClientPriorityInternal(clientId, priority, niceValue);
             }
-
-            ClientProfile profile = mClientProfiles.get(clientId);
-            if (profile == null) {
-                Slog.e(TAG, "Can not find client profile with id " + clientId
-                        + " when trying to update the client priority.");
-                return false;
-            }
-
-            profile.setPriority(priority);
-            profile.setNiceValue(niceValue);
-
-            return true;
         }
 
         @Override
-        public void setFrontendInfoList(@NonNull TunerFrontendInfo[] infos)
+        public void setFrontendInfoList(@NonNull TunerFrontendInfo[] infos) throws RemoteException {
-                throws RemoteException {
+            enforceAccessPermission();
-            if (infos == null || infos.length == 0) {
+            if (infos == null) {
-                Slog.d(TAG, "Can't update with empty frontend info");
+                throw new RemoteException("TunerFrontendInfo can't be null");
-                return;
             }
-
+            synchronized (mLock) {
-            if (DEBUG) {
+                setFrontendInfoListInternal(infos);
-                Slog.d(TAG, "updateFrontendInfo:");
-                for (int i = 0; i < infos.length; i++) {
-                    Slog.d(TAG, infos[i].toString());
-                }
             }
         }
 
         @Override
         public void updateCasInfo(int casSystemId, int maxSessionNum) {
             if (DEBUG) {
-                Slog.d(TAG, "updateCasInfo(casSystemId="
+                Slog.d(TAG,
-                        + casSystemId + ", maxSessionNum=" + maxSessionNum + ")");
+                        "updateCasInfo(casSystemId=" + casSystemId
+                                + ", maxSessionNum=" + maxSessionNum + ")");
             }
         }
 
@@ -166,49 +163,30 @@ public class TunerResourceManagerService extends SystemService {
 
         @Override
         public boolean requestFrontend(@NonNull TunerFrontendRequest request,
-                                       @NonNull int[] frontendId) throws RemoteException {
+                @NonNull int[] frontendId) throws RemoteException {
-            if (DEBUG) {
+            enforceAccessPermission();
-                Slog.d(TAG, "requestFrontend(request=" + request + ")");
+            if (frontendId == null) {
+                throw new RemoteException("frontendId can't be null");
             }
-
+            synchronized (mLock) {
-            frontendId[0] = TunerResourceManager.INVALID_FRONTEND_ID;
+                try {
-
+                    return requestFrontendInternal(request, frontendId);
-            if (getContext() == null) {
+                } catch (RemoteException e) {
-                Slog.e(TAG, "Can not find context when requesting frontend");
+                    throw e.rethrowFromSystemServer();
-                return false;
+                }
             }
-
-            if (mClientProfiles.get(request.getClientId()) == null) {
-                Slog.e(TAG, "Request from unregistered client. Id: "
-                        + request.getClientId());
-                return false;
-            }
-
-            String sessionId = mClientProfiles.get(request.getClientId())
-                    .getTvInputSessionId();
-
-            if (DEBUG) {
-                Slog.d(TAG, "session Id:" + sessionId + ")");
-            }
-
-            if (DEBUG) {
-                Slog.d(TAG, "No available Frontend found.");
-            }
-
-            return false;
         }
 
         @Override
         public void shareFrontend(int selfClientId, int targetClientId) {
             if (DEBUG) {
-                Slog.d(TAG, "shareFrontend from "
+                Slog.d(TAG, "shareFrontend from " + selfClientId + " with " + targetClientId);
-                        + selfClientId + " with " + targetClientId);
             }
         }
 
         @Override
-        public boolean requestCasSession(@NonNull CasSessionRequest request,
+        public boolean requestCasSession(
-                    @NonNull int[] sessionResourceId) {
+                @NonNull CasSessionRequest request, @NonNull int[] sessionResourceId) {
             if (DEBUG) {
                 Slog.d(TAG, "requestCasSession(request=" + request + ")");
             }
@@ -246,13 +224,284 @@ public class TunerResourceManagerService extends SystemService {
         }
 
         @Override
-        public boolean isHigherPriority(ResourceClientProfile challengerProfile,
+        public boolean isHigherPriority(
-                ResourceClientProfile holderProfile) {
+                ResourceClientProfile challengerProfile, ResourceClientProfile holderProfile) {
             if (DEBUG) {
-                Slog.d(TAG, "isHigherPriority(challengerProfile=" + challengerProfile
+                Slog.d(TAG,
-                        + ", holderProfile=" + challengerProfile + ")");
+                        "isHigherPriority(challengerProfile=" + challengerProfile
+                                + ", holderProfile=" + challengerProfile + ")");
             }
             return true;
         }
     }
+
+    @VisibleForTesting
+    protected void registerClientProfileInternal(ResourceClientProfile profile,
+            IResourcesReclaimListener listener, int[] clientId) {
+        if (DEBUG) {
+            Slog.d(TAG, "registerClientProfile(clientProfile=" + profile + ")");
+        }
+
+        clientId[0] = INVALID_CLIENT_ID;
+        if (mManager == null) {
+            Slog.e(TAG, "TvInputManager is null. Can't register client profile.");
+            return;
+        }
+        // TODO tell if the client already exists
+        clientId[0] = mNextUnusedClientId++;
+
+        int pid = profile.getTvInputSessionId() == null
+                ? Binder.getCallingPid() /*callingPid*/
+                : mManager.getClientPid(profile.getTvInputSessionId()); /*tvAppId*/
+
+        ClientProfile clientProfile = new ClientProfile.Builder(clientId[0])
+                                              .tvInputSessionId(profile.getTvInputSessionId())
+                                              .useCase(profile.getUseCase())
+                                              .processId(pid)
+                                              .build();
+        clientProfile.setPriority(getClientPriority(profile.getUseCase(), pid));
+
+        mClientProfiles.append(clientId[0], clientProfile);
+        mListeners.append(clientId[0], listener);
+        mRegisteredClientIds.add(clientId[0]);
+    }
+
+    @VisibleForTesting
+    protected void unregisterClientProfileInternal(int clientId) {
+        if (DEBUG) {
+            Slog.d(TAG, "unregisterClientProfile(clientId=" + clientId + ")");
+        }
+        for (int id : getClientProfile(clientId).getInUseFrontendIds()) {
+            getFrontendResource(id).removeOwner();
+            for (int groupMemberId : getFrontendResource(id).getExclusiveGroupMemberFeIds()) {
+                getFrontendResource(groupMemberId).removeOwner();
+            }
+        }
+        mClientProfiles.remove(clientId);
+        mListeners.remove(clientId);
+        mRegisteredClientIds.remove(clientId);
+    }
+
+    @VisibleForTesting
+    protected boolean updateClientPriorityInternal(int clientId, int priority, int niceValue) {
+        if (DEBUG) {
+            Slog.d(TAG,
+                    "updateClientPriority(clientId=" + clientId + ", priority=" + priority
+                            + ", niceValue=" + niceValue + ")");
+        }
+
+        ClientProfile profile = getClientProfile(clientId);
+        if (profile == null) {
+            Slog.e(TAG,
+                    "Can not find client profile with id " + clientId
+                            + " when trying to update the client priority.");
+            return false;
+        }
+
+        profile.setPriority(priority);
+        profile.setNiceValue(niceValue);
+
+        return true;
+    }
+
+    @VisibleForTesting
+    protected void setFrontendInfoListInternal(TunerFrontendInfo[] infos) {
+        if (DEBUG) {
+            Slog.d(TAG, "updateFrontendInfo:");
+            for (int i = 0; i < infos.length; i++) {
+                Slog.d(TAG, infos[i].toString());
+            }
+        }
+
+        // An arrayList to record the frontends pending on updating. Ids will be removed
+        // from this list once its updating finished. Any frontend left in this list when all
+        // the updates are done will be removed from mAvailableFrontendIds and
+        // mFrontendResources.
+        List<Integer> updatingFrontendIds = new ArrayList<>(mAvailableFrontendIds);
+
+        // Update frontendResources sparse array and other mappings accordingly
+        for (int i = 0; i < infos.length; i++) {
+            if (getFrontendResource(infos[i].getId()) != null) {
+                if (DEBUG) {
+                    Slog.d(TAG, "Frontend id=" + infos[i].getId() + "exists.");
+                }
+                updatingFrontendIds.remove(new Integer(infos[i].getId()));
+            } else {
+                // Add a new fe resource
+                FrontendResource newFe = new FrontendResource.Builder(infos[i].getId())
+                                                 .type(infos[i].getFrontendType())
+                                                 .exclusiveGroupId(infos[i].getExclusiveGroupId())
+                                                 .build();
+                // Update the exclusive group member list in all the existing Frontend resource
+                for (Integer feId : mAvailableFrontendIds) {
+                    FrontendResource fe = getFrontendResource(feId.intValue());
+                    if (fe.getExclusiveGroupId() == newFe.getExclusiveGroupId()) {
+                        newFe.addExclusiveGroupMemberFeId(fe.getId());
+                        newFe.addExclusiveGroupMemberFeId(fe.getExclusiveGroupMemberFeIds());
+                        for (Integer excGroupmemberFeId : fe.getExclusiveGroupMemberFeIds()) {
+                            getFrontendResource(excGroupmemberFeId.intValue())
+                                    .addExclusiveGroupMemberFeId(newFe.getId());
+                        }
+                        fe.addExclusiveGroupMemberFeId(newFe.getId());
+                        break;
+                    }
+                }
+                // Update resource list and available id list
+                mFrontendResources.append(newFe.getId(), newFe);
+                mAvailableFrontendIds.add(newFe.getId());
+            }
+        }
+
+        // TODO check if the removing resource is in use or not. Handle the conflict.
+        for (Integer removingId : updatingFrontendIds) {
+            // update the exclusive group id memver list
+            FrontendResource fe = getFrontendResource(removingId.intValue());
+            fe.removeExclusiveGroupMemberFeId(new Integer(fe.getId()));
+            for (Integer excGroupmemberFeId : fe.getExclusiveGroupMemberFeIds()) {
+                getFrontendResource(excGroupmemberFeId.intValue())
+                        .removeExclusiveGroupMemberFeId(new Integer(fe.getId()));
+            }
+            mFrontendResources.remove(removingId.intValue());
+            mAvailableFrontendIds.remove(removingId);
+        }
+    }
+
+    @VisibleForTesting
+    protected boolean requestFrontendInternal(TunerFrontendRequest request, int[] frontendId)
+            throws RemoteException {
+        if (DEBUG) {
+            Slog.d(TAG, "requestFrontend(request=" + request + ")");
+        }
+
+        frontendId[0] = TunerResourceManager.INVALID_FRONTEND_ID;
+        if (!checkClientExists(request.getClientId())) {
+            Slog.e(TAG, "Request frontend from unregistered client:" + request.getClientId());
+            return false;
+        }
+        ClientProfile requestClient = getClientProfile(request.getClientId());
+        int grantingFrontendId = -1;
+        int inUseLowestPriorityFrId = -1;
+        // Priority max value is 1000
+        int currentLowestPriority = MAX_CLIENT_PRIORITY + 1;
+        for (int id : mAvailableFrontendIds) {
+            FrontendResource fr = getFrontendResource(id);
+            if (fr.getType() == request.getFrontendType()) {
+                if (!fr.isInUse()) {
+                    // Grant unused frontend with no exclusive group members first.
+                    if (fr.getExclusiveGroupMemberFeIds().size() == 0) {
+                        grantingFrontendId = id;
+                        break;
+                    } else if (grantingFrontendId < 0) {
+                        // Grant the unused frontend with lower id first if all the unused
+                        // frontends have exclusive group members.
+                        grantingFrontendId = id;
+                    }
+                } else if (grantingFrontendId < 0) {
+                    // Record the frontend id with the lowest client priority among all the
+                    // in use frontends when no available frontend has been found.
+                    int priority = getOwnerClientPriority(id);
+                    if (currentLowestPriority > priority) {
+                        inUseLowestPriorityFrId = id;
+                        currentLowestPriority = priority;
+                    }
+                }
+            }
+        }
+
+        // Grant frontend when there is unused resource.
+        if (grantingFrontendId > -1) {
+            frontendId[0] = grantingFrontendId;
+            updateFrontendClientMappingOnNewGrant(frontendId[0], request.getClientId());
+            return true;
+        }
+
+        // When all the resources are occupied, grant the lowest priority resource if the
+        // request client has higher priority.
+        if (inUseLowestPriorityFrId > -1 && (requestClient.getPriority() > currentLowestPriority)) {
+            frontendId[0] = inUseLowestPriorityFrId;
+            reclaimFrontendResource(getFrontendResource(frontendId[0]).getOwnerClientId());
+            updateFrontendClientMappingOnNewGrant(frontendId[0], request.getClientId());
+            return true;
+        }
+
+        return false;
+    }
+
+    @VisibleForTesting
+    protected int getClientPriority(int useCase, int pid) {
+        if (DEBUG) {
+            Slog.d(TAG, "getClientPriority useCase=" + useCase
+                    + ", pid=" + pid + ")");
+        }
+
+        if (isForeground(pid)) {
+            return mPriorityCongfig.getForegroundPriority(useCase);
+        }
+        return mPriorityCongfig.getBackgroundPriority(useCase);
+    }
+
+    @VisibleForTesting
+    protected boolean isForeground(int pid) {
+        // TODO: how to get fg/bg information from pid
+        return true;
+    }
+
+    @VisibleForTesting
+    protected void reclaimFrontendResource(int reclaimingId) throws RemoteException {
+        if (mListeners.get(reclaimingId) != null) {
+            try {
+                mListeners.get(reclaimingId).onReclaimResources();
+            } catch (RemoteException e) {
+                throw e.rethrowFromSystemServer();
+            }
+        }
+    }
+
+    private void updateFrontendClientMappingOnNewGrant(int grantingId, int ownerClientId) {
+        FrontendResource grantingFrontend = getFrontendResource(grantingId);
+        ClientProfile ownerProfile = getClientProfile(ownerClientId);
+        grantingFrontend.setOwner(ownerClientId);
+        ownerProfile.useFrontend(grantingId);
+        for (int exclusiveGroupMember : grantingFrontend.getExclusiveGroupMemberFeIds()) {
+            getFrontendResource(exclusiveGroupMember).setOwner(ownerClientId);
+            ownerProfile.useFrontend(exclusiveGroupMember);
+        }
+    }
+
+    /**
+     * Get the owner client's priority from the frontend id.
+     *
+     * @param frontendId an in use frontend id.
+     * @return the priority of the owner client of the frontend.
+     */
+    private int getOwnerClientPriority(int frontendId) {
+        return getClientProfile(getFrontendResource(frontendId).getOwnerClientId()).getPriority();
+    }
+
+    private ClientProfile getClientProfile(int clientId) {
+        return mClientProfiles.get(clientId);
+    }
+
+    protected FrontendResource getFrontendResource(int frontendId) {
+        return mFrontendResources.get(frontendId);
+    }
+
+    @VisibleForTesting
+    protected SparseArray<ClientProfile> getClientProfiles() {
+        return mClientProfiles;
+    }
+
+    @VisibleForTesting
+    protected SparseArray<FrontendResource> getFrontendResources() {
+        return mFrontendResources;
+    }
+
+    private boolean checkClientExists(int clientId) {
+        return mRegisteredClientIds.contains(clientId);
+    }
+
+    private void enforceAccessPermission() {
+        getContext().enforceCallingOrSelfPermission(
+                "android.permission.TUNER_RESOURCE_ACCESS", TAG);
+    }
 }

services/core/java/com/android/server/tv/tunerresourcemanager/UseCasePriorityHints.java

@@ -0,0 +1,236 @@
+/*
+ * 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 com.android.server.tv.tunerresourcemanager;
+
+import android.media.tv.TvInputService;
+import android.media.tv.TvInputService.PriorityHintUseCaseType;
+import android.util.Log;
+import android.util.Slog;
+import android.util.SparseArray;
+import android.util.Xml;
+
+import com.android.internal.annotations.VisibleForTesting;
+
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * This class provides the Tuner Resource Manager use case priority hints config info including a
+ * parser that can read the xml config from the vendors.
+ *
+ * @hide
+ */
+public class UseCasePriorityHints {
+    private static final String TAG = "UseCasePriorityHints";
+    private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
+
+    private static final String PATH_TO_VENDOR_CONFIG_XML =
+            "/vendor/etc/tunerResourceManagerUseCaseConfig.xml";
+    private static final int INVALID_PRIORITY_VALUE = -1;
+    private static final int INVALID_USE_CASE = -1;
+
+    /**
+     * Array of the configured use case priority hints. Key is the use case id. Value is a size 2
+     * int array. The first element carries the priority of the use case on foreground. The second
+     * shows the background priority.
+     */
+    SparseArray<int[]> mPriorityHints = new SparseArray<>();
+
+    List<Integer> mVendorDefinedUseCase = new ArrayList<>();
+
+    private int mDefaultForeground = 150;
+    private int mDefaultBackground = 50;
+
+    int getForegroundPriority(int useCase) {
+        if (mPriorityHints.get(useCase) != null && mPriorityHints.get(useCase).length == 2) {
+            return mPriorityHints.get(useCase)[0];
+        }
+        return mDefaultForeground;
+    }
+
+    int getBackgroundPriority(int useCase) {
+        if (mPriorityHints.get(useCase) != null && mPriorityHints.get(useCase).length == 2) {
+            return mPriorityHints.get(useCase)[1];
+        }
+        return mDefaultBackground;
+    }
+
+    boolean isDefinedUseCase(int useCase) {
+        return (mVendorDefinedUseCase.contains(useCase) || isPredefinedUseCase(useCase));
+    }
+
+    /**
+     * To parse the vendor use case config.
+     */
+    public void parse() {
+        // Override the default priority with vendor setting if available.
+        File file = new File(PATH_TO_VENDOR_CONFIG_XML);
+        if (file.exists()) {
+            try {
+                InputStream in = new FileInputStream(file);
+                parseInternal(in);
+                return;
+            } catch (IOException e) {
+                Slog.e(TAG, "Error reading vendor file: " + file, e);
+            } catch (XmlPullParserException e) {
+                Slog.e(TAG, "Unable to parse vendor file: " + file, e);
+            }
+        } else {
+            if (DEBUG) {
+                Slog.i(TAG, "no vendor priority configuration available. Using default priority");
+            }
+            addNewUseCasePriority(TvInputService.PRIORITY_HINT_USE_CASE_TYPE_BACKGROUND, 180, 100);
+            addNewUseCasePriority(TvInputService.PRIORITY_HINT_USE_CASE_TYPE_SCAN, 450, 200);
+            addNewUseCasePriority(TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK, 480, 300);
+            addNewUseCasePriority(TvInputService.PRIORITY_HINT_USE_CASE_TYPE_LIVE, 490, 400);
+            addNewUseCasePriority(TvInputService.PRIORITY_HINT_USE_CASE_TYPE_RECORD, 600, 500);
+        }
+    }
+
+    // We don't use namespaces
+    private static final String NS = null;
+
+    @VisibleForTesting
+    protected void parseInternal(InputStream in)
+            throws IOException, XmlPullParserException {
+        try {
+            XmlPullParser parser = Xml.newPullParser();
+            parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
+            parser.setInput(in, null);
+            parser.nextTag();
+            readUseCase(parser);
+            in.close();
+        } catch (IOException | XmlPullParserException e) {
+            throw e;
+        }
+        for (int i = 0; i < mPriorityHints.size(); i++) {
+            int useCase = mPriorityHints.keyAt(i);
+            int[] priorities = mPriorityHints.get(useCase);
+            if (DEBUG) {
+                Slog.d(TAG, "{defaultFg=" + mDefaultForeground
+                        + ", defaultBg=" + mDefaultBackground + "}");
+                Slog.d(TAG, "{useCase=" + useCase
+                        + ", fg=" + priorities[0]
+                        + ", bg=" + priorities[1]
+                        + "}");
+            }
+        }
+    }
+
+    private void readUseCase(XmlPullParser parser)
+            throws XmlPullParserException, IOException {
+        parser.require(XmlPullParser.START_TAG, NS, "config");
+        while (parser.next() != XmlPullParser.END_TAG) {
+            if (parser.getEventType() != XmlPullParser.START_TAG) {
+                continue;
+            }
+            String name = parser.getName();
+            int useCase;
+            if (name.equals("useCaseDefault")) {
+                mDefaultForeground = readAttributeToInt("fgPriority", parser);
+                mDefaultBackground = readAttributeToInt("bgPriority", parser);
+                parser.nextTag();
+                parser.require(XmlPullParser.END_TAG, NS, name);
+            } else if (name.equals("useCasePreDefined")) {
+                useCase = formatTypeToNum("type", parser);
+                if (useCase == INVALID_USE_CASE) {
+                    Slog.e(TAG, "Wrong predefined use case name given in the vendor config.");
+                    continue;
+                }
+                addNewUseCasePriority(useCase,
+                        readAttributeToInt("fgPriority", parser),
+                        readAttributeToInt("bgPriority", parser));
+                parser.nextTag();
+                parser.require(XmlPullParser.END_TAG, NS, name);
+            } else if (name.equals("useCaseVendor")) {
+                useCase = readAttributeToInt("id", parser);
+                addNewUseCasePriority(useCase,
+                        readAttributeToInt("fgPriority", parser),
+                        readAttributeToInt("bgPriority", parser));
+                mVendorDefinedUseCase.add(useCase);
+                parser.nextTag();
+                parser.require(XmlPullParser.END_TAG, NS, name);
+            } else {
+                skip(parser);
+            }
+        }
+    }
+
+    private void skip(XmlPullParser parser) throws XmlPullParserException, IOException {
+        if (parser.getEventType() != XmlPullParser.START_TAG) {
+            throw new IllegalStateException();
+        }
+        int depth = 1;
+        while (depth != 0) {
+            switch (parser.next()) {
+                case XmlPullParser.END_TAG:
+                    depth--;
+                    break;
+                case XmlPullParser.START_TAG:
+                    depth++;
+                    break;
+            }
+        }
+    }
+
+    private int readAttributeToInt(String attributeName, XmlPullParser parser) {
+        return Integer.valueOf(parser.getAttributeValue(null, attributeName));
+    }
+
+    private void addNewUseCasePriority(int useCase, int fgPriority, int bgPriority) {
+        int[] priorities = {fgPriority, bgPriority};
+        mPriorityHints.append(useCase, priorities);
+    }
+
+    @PriorityHintUseCaseType
+    private static int formatTypeToNum(String attributeName, XmlPullParser parser) {
+        String useCaseName = parser.getAttributeValue(null, attributeName);
+        switch (useCaseName) {
+            case "USE_CASE_BACKGROUND":
+                return TvInputService.PRIORITY_HINT_USE_CASE_TYPE_BACKGROUND;
+            case "USE_CASE_SCAN":
+                return TvInputService.PRIORITY_HINT_USE_CASE_TYPE_SCAN;
+            case "USE_CASE_PLAYBACK":
+                return TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK;
+            case "USE_CASE_LIVE":
+                return TvInputService.PRIORITY_HINT_USE_CASE_TYPE_LIVE;
+            case "USE_CASE_RECORD":
+                return TvInputService.PRIORITY_HINT_USE_CASE_TYPE_RECORD;
+            default:
+                return INVALID_USE_CASE;
+        }
+    }
+
+    private static boolean isPredefinedUseCase(int useCase) {
+        switch (useCase) {
+            case TvInputService.PRIORITY_HINT_USE_CASE_TYPE_BACKGROUND:
+            case TvInputService.PRIORITY_HINT_USE_CASE_TYPE_SCAN:
+            case TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK:
+            case TvInputService.PRIORITY_HINT_USE_CASE_TYPE_LIVE:
+            case TvInputService.PRIORITY_HINT_USE_CASE_TYPE_RECORD:
+                return true;
+            default:
+                return false;
+        }
+    }
+}

services/tests/servicestests/src/com/android/server/tv/tunerresourcemanager/TunerResourceManagerServiceTest.java

@@ -0,0 +1,497 @@
+/*
+ * 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 com.android.server.tv.tunerresourcemanager;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.content.ContextWrapper;
+import android.media.tv.ITvInputManager;
+import android.media.tv.TvInputManager;
+import android.media.tv.TvInputService;
+import android.media.tv.tuner.frontend.FrontendSettings;
+import android.media.tv.tunerresourcemanager.ResourceClientProfile;
+import android.media.tv.tunerresourcemanager.TunerFrontendInfo;
+import android.media.tv.tunerresourcemanager.TunerFrontendRequest;
+import android.media.tv.tunerresourcemanager.TunerResourceManager;
+import android.os.RemoteException;
+import android.util.SparseArray;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.SmallTest;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+
+/**
+ * Tests for {@link TunerResourceManagerService} class.
+ */
+@SmallTest
+@RunWith(JUnit4.class)
+public class TunerResourceManagerServiceTest {
+    private static final String TAG = "TunerResourceManagerServiceTest";
+    private Context mContextSpy;
+    @Mock private ITvInputManager mITvInputManagerMock;
+    private TunerResourceManagerService mTunerResourceManagerService;
+    private int mReclaimingId;
+
+    @Before
+    public void setUp() throws Exception {
+        MockitoAnnotations.initMocks(this);
+        TvInputManager tvInputManager = new TvInputManager(mITvInputManagerMock, 0);
+        mContextSpy = spy(new ContextWrapper(InstrumentationRegistry.getTargetContext()));
+        when(mContextSpy.getSystemService(Context.TV_INPUT_SERVICE)).thenReturn(tvInputManager);
+        mTunerResourceManagerService = new TunerResourceManagerService(mContextSpy) {
+            @Override
+            protected void reclaimFrontendResource(int reclaimingId) {
+                mReclaimingId = reclaimingId;
+            }
+        };
+        mTunerResourceManagerService.onStart(true /*isForTesting*/);
+        mReclaimingId = -1;
+    }
+
+    @Test
+    public void setFrontendListTest_addFrontendResources_noExclusiveGroupId() {
+        // Init frontend resources.
+        TunerFrontendInfo[] infos = new TunerFrontendInfo[2];
+        infos[0] =
+                new TunerFrontendInfo(0 /*id*/, FrontendSettings.TYPE_DVBT, 0 /*exclusiveGroupId*/);
+        infos[1] =
+                new TunerFrontendInfo(1 /*id*/, FrontendSettings.TYPE_DVBT, 1 /*exclusiveGroupId*/);
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos);
+
+        SparseArray<FrontendResource> resources =
+                mTunerResourceManagerService.getFrontendResources();
+        assertThat(resources.size()).isEqualTo(infos.length);
+        for (int id = 0; id < infos.length; id++) {
+            FrontendResource fe = resources.get(infos[id].getId());
+            assertThat(fe.getId()).isEqualTo(infos[id].getId());
+            assertThat(fe.getType()).isEqualTo(infos[id].getFrontendType());
+            assertThat(fe.getExclusiveGroupId()).isEqualTo(infos[id].getExclusiveGroupId());
+            assertThat(fe.getExclusiveGroupMemberFeIds().size()).isEqualTo(0);
+        }
+    }
+
+    @Test
+    public void setFrontendListTest_addFrontendResources_underTheSameExclusiveGroupId() {
+        // Init frontend resources.
+        TunerFrontendInfo[] infos = new TunerFrontendInfo[4];
+        infos[0] =
+                new TunerFrontendInfo(0 /*id*/, FrontendSettings.TYPE_DVBT, 0 /*exclusiveGroupId*/);
+        infos[1] =
+                new TunerFrontendInfo(1 /*id*/, FrontendSettings.TYPE_DVBT, 1 /*exclusiveGroupId*/);
+        infos[2] =
+                new TunerFrontendInfo(2 /*id*/, FrontendSettings.TYPE_DVBS, 1 /*exclusiveGroupId*/);
+        infos[3] =
+                new TunerFrontendInfo(3 /*id*/, FrontendSettings.TYPE_ATSC, 1 /*exclusiveGroupId*/);
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos);
+
+        SparseArray<FrontendResource> resources =
+                mTunerResourceManagerService.getFrontendResources();
+        assertThat(resources.size()).isEqualTo(infos.length);
+        for (int id = 0; id < infos.length; id++) {
+            FrontendResource fe = resources.get(infos[id].getId());
+            assertThat(fe.getId()).isEqualTo(infos[id].getId());
+            assertThat(fe.getType()).isEqualTo(infos[id].getFrontendType());
+            assertThat(fe.getExclusiveGroupId()).isEqualTo(infos[id].getExclusiveGroupId());
+        }
+
+        assertThat(resources.get(0).getExclusiveGroupMemberFeIds())
+                .isEqualTo(new ArrayList<Integer>());
+        assertThat(resources.get(1).getExclusiveGroupMemberFeIds())
+                .isEqualTo(new ArrayList<Integer>(Arrays.asList(2, 3)));
+        assertThat(resources.get(2).getExclusiveGroupMemberFeIds())
+                .isEqualTo(new ArrayList<Integer>(Arrays.asList(1, 3)));
+        assertThat(resources.get(3).getExclusiveGroupMemberFeIds())
+                .isEqualTo(new ArrayList<Integer>(Arrays.asList(1, 2)));
+    }
+
+    @Test
+    public void setFrontendListTest_updateExistingFrontendResources() {
+        // Init frontend resources.
+        TunerFrontendInfo[] infos = new TunerFrontendInfo[2];
+        infos[0] =
+                new TunerFrontendInfo(0 /*id*/, FrontendSettings.TYPE_DVBT, 1 /*exclusiveGroupId*/);
+        infos[1] =
+                new TunerFrontendInfo(1 /*id*/, FrontendSettings.TYPE_DVBS, 1 /*exclusiveGroupId*/);
+
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos);
+        SparseArray<FrontendResource> resources0 =
+                mTunerResourceManagerService.getFrontendResources();
+
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos);
+        SparseArray<FrontendResource> resources1 =
+                mTunerResourceManagerService.getFrontendResources();
+
+        assertThat(resources0).isEqualTo(resources1);
+    }
+
+    @Test
+    public void setFrontendListTest_removeFrontendResources_noExclusiveGroupId() {
+        // Init frontend resources.
+        TunerFrontendInfo[] infos0 = new TunerFrontendInfo[3];
+        infos0[0] =
+                new TunerFrontendInfo(0 /*id*/, FrontendSettings.TYPE_DVBT, 0 /*exclusiveGroupId*/);
+        infos0[1] =
+                new TunerFrontendInfo(1 /*id*/, FrontendSettings.TYPE_DVBT, 1 /*exclusiveGroupId*/);
+        infos0[2] =
+                new TunerFrontendInfo(2 /*id*/, FrontendSettings.TYPE_DVBS, 2 /*exclusiveGroupId*/);
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos0);
+
+        TunerFrontendInfo[] infos1 = new TunerFrontendInfo[1];
+        infos1[0] =
+                new TunerFrontendInfo(1 /*id*/, FrontendSettings.TYPE_DVBT, 1 /*exclusiveGroupId*/);
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos1);
+
+        SparseArray<FrontendResource> resources =
+                mTunerResourceManagerService.getFrontendResources();
+        assertThat(resources.size()).isEqualTo(infos1.length);
+        for (int id = 0; id < infos1.length; id++) {
+            FrontendResource fe = resources.get(infos1[id].getId());
+            assertThat(fe.getId()).isEqualTo(infos1[id].getId());
+            assertThat(fe.getType()).isEqualTo(infos1[id].getFrontendType());
+            assertThat(fe.getExclusiveGroupId()).isEqualTo(infos1[id].getExclusiveGroupId());
+            assertThat(fe.getExclusiveGroupMemberFeIds().size()).isEqualTo(0);
+        }
+    }
+
+    @Test
+    public void setFrontendListTest_removeFrontendResources_underTheSameExclusiveGroupId() {
+        // Init frontend resources.
+        TunerFrontendInfo[] infos0 = new TunerFrontendInfo[3];
+        infos0[0] =
+                new TunerFrontendInfo(0 /*id*/, FrontendSettings.TYPE_DVBT, 0 /*exclusiveGroupId*/);
+        infos0[1] =
+                new TunerFrontendInfo(1 /*id*/, FrontendSettings.TYPE_DVBT, 1 /*exclusiveGroupId*/);
+        infos0[2] =
+                new TunerFrontendInfo(2 /*id*/, FrontendSettings.TYPE_DVBS, 1 /*exclusiveGroupId*/);
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos0);
+
+        TunerFrontendInfo[] infos1 = new TunerFrontendInfo[1];
+        infos1[0] =
+                new TunerFrontendInfo(1 /*id*/, FrontendSettings.TYPE_DVBT, 1 /*exclusiveGroupId*/);
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos1);
+
+        SparseArray<FrontendResource> resources =
+                mTunerResourceManagerService.getFrontendResources();
+        assertThat(resources.size()).isEqualTo(infos1.length);
+        for (int id = 0; id < infos1.length; id++) {
+            FrontendResource fe = resources.get(infos1[id].getId());
+            assertThat(fe.getId()).isEqualTo(infos1[id].getId());
+            assertThat(fe.getType()).isEqualTo(infos1[id].getFrontendType());
+            assertThat(fe.getExclusiveGroupId()).isEqualTo(infos1[id].getExclusiveGroupId());
+            assertThat(fe.getExclusiveGroupMemberFeIds().size()).isEqualTo(0);
+        }
+    }
+
+    @Test
+    public void requestFrontendTest_ClientNotRegistered() {
+        TunerFrontendRequest request =
+                new TunerFrontendRequest(0 /*clientId*/, FrontendSettings.TYPE_DVBT);
+        int[] frontendId = new int[1];
+        try {
+            assertThat(mTunerResourceManagerService.requestFrontendInternal(request, frontendId))
+                    .isFalse();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+        assertThat(frontendId[0]).isEqualTo(TunerResourceManager.INVALID_FRONTEND_ID);
+    }
+
+    @Test
+    public void requestFrontendTest_NoFrontendWithGiveTypeAvailable() {
+        ResourceClientProfile profile = new ResourceClientProfile("0" /*sessionId*/,
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK);
+        int[] clientId = new int[1];
+        mTunerResourceManagerService.registerClientProfileInternal(
+                profile, null /*listener*/, clientId);
+        assertThat(clientId[0]).isNotEqualTo(TunerResourceManagerService.INVALID_CLIENT_ID);
+
+        // Init frontend resources.
+        TunerFrontendInfo[] infos = new TunerFrontendInfo[1];
+        infos[0] =
+                new TunerFrontendInfo(0 /*id*/, FrontendSettings.TYPE_DVBS, 0 /*exclusiveGroupId*/);
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos);
+
+        TunerFrontendRequest request =
+                new TunerFrontendRequest(clientId[0] /*clientId*/, FrontendSettings.TYPE_DVBT);
+        int[] frontendId = new int[1];
+        try {
+            assertThat(mTunerResourceManagerService.requestFrontendInternal(request, frontendId))
+                    .isFalse();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+        assertThat(frontendId[0]).isEqualTo(TunerResourceManager.INVALID_FRONTEND_ID);
+    }
+
+    @Test
+    public void requestFrontendTest_FrontendWithNoExclusiveGroupAvailable() {
+        ResourceClientProfile profile = new ResourceClientProfile("0" /*sessionId*/,
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK);
+        int[] clientId = new int[1];
+        mTunerResourceManagerService.registerClientProfileInternal(
+                profile, null /*listener*/, clientId);
+        assertThat(clientId[0]).isNotEqualTo(TunerResourceManagerService.INVALID_CLIENT_ID);
+
+        // Init frontend resources.
+        TunerFrontendInfo[] infos = new TunerFrontendInfo[3];
+        infos[0] =
+                new TunerFrontendInfo(0 /*id*/, FrontendSettings.TYPE_DVBT, 0 /*exclusiveGroupId*/);
+        infos[1] =
+                new TunerFrontendInfo(1 /*id*/, FrontendSettings.TYPE_DVBT, 1 /*exclusiveGroupId*/);
+        infos[2] =
+                new TunerFrontendInfo(2 /*id*/, FrontendSettings.TYPE_DVBS, 1 /*exclusiveGroupId*/);
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos);
+
+        TunerFrontendRequest request =
+                new TunerFrontendRequest(clientId[0] /*clientId*/, FrontendSettings.TYPE_DVBT);
+        int[] frontendId = new int[1];
+        try {
+            assertThat(mTunerResourceManagerService.requestFrontendInternal(request, frontendId))
+                    .isTrue();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+        assertThat(frontendId[0]).isEqualTo(0);
+    }
+
+    @Test
+    public void requestFrontendTest_FrontendWithExclusiveGroupAvailable() {
+        ResourceClientProfile profile0 = new ResourceClientProfile("0" /*sessionId*/,
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK);
+        ResourceClientProfile profile1 = new ResourceClientProfile("1" /*sessionId*/,
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK);
+        int[] clientId0 = new int[1];
+        int[] clientId1 = new int[1];
+        mTunerResourceManagerService.registerClientProfileInternal(
+                profile0, null /*listener*/, clientId0);
+        mTunerResourceManagerService.registerClientProfileInternal(
+                profile1, null /*listener*/, clientId1);
+        assertThat(clientId0[0]).isNotEqualTo(TunerResourceManagerService.INVALID_CLIENT_ID);
+        assertThat(clientId1[0]).isNotEqualTo(TunerResourceManagerService.INVALID_CLIENT_ID);
+
+        // Init frontend resources.
+        TunerFrontendInfo[] infos = new TunerFrontendInfo[3];
+        infos[0] =
+                new TunerFrontendInfo(0 /*id*/, FrontendSettings.TYPE_DVBT, 0 /*exclusiveGroupId*/);
+        infos[1] =
+                new TunerFrontendInfo(1 /*id*/, FrontendSettings.TYPE_DVBT, 1 /*exclusiveGroupId*/);
+        infos[2] =
+                new TunerFrontendInfo(2 /*id*/, FrontendSettings.TYPE_DVBS, 1 /*exclusiveGroupId*/);
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos);
+
+        int[] frontendId = new int[1];
+        TunerFrontendRequest request =
+                new TunerFrontendRequest(clientId1[0] /*clientId*/, FrontendSettings.TYPE_DVBT);
+        try {
+            assertThat(mTunerResourceManagerService.requestFrontendInternal(request, frontendId))
+                    .isTrue();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+        assertThat(frontendId[0]).isEqualTo(infos[0].getId());
+
+        request =
+                new TunerFrontendRequest(clientId0[0] /*clientId*/, FrontendSettings.TYPE_DVBT);
+        try {
+            assertThat(mTunerResourceManagerService.requestFrontendInternal(request, frontendId))
+                    .isTrue();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+        assertThat(frontendId[0]).isEqualTo(infos[1].getId());
+        assertThat(mTunerResourceManagerService.getFrontendResources().get(infos[1].getId())
+                .isInUse()).isTrue();
+        assertThat(mTunerResourceManagerService.getFrontendResources().get(infos[2].getId())
+                .isInUse()).isTrue();
+    }
+
+    @Test
+    public void requestFrontendTest_NoFrontendAvailable_RequestWithLowerPriority() {
+        // Register clients
+        ResourceClientProfile[] profiles = new ResourceClientProfile[2];
+        profiles[0] = new ResourceClientProfile("0" /*sessionId*/,
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK);
+        profiles[1] = new ResourceClientProfile("1" /*sessionId*/,
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK);
+        int[] clientPriorities = {100, 50};
+        int[] clientId0 = new int[1];
+        int[] clientId1 = new int[1];
+        mTunerResourceManagerService.registerClientProfileInternal(
+                profiles[0], null /*listener*/, clientId0);
+        assertThat(clientId0[0]).isNotEqualTo(TunerResourceManagerService.INVALID_CLIENT_ID);
+        mTunerResourceManagerService.getClientProfiles().get(clientId0[0])
+                .setPriority(clientPriorities[0]);
+        mTunerResourceManagerService.registerClientProfileInternal(
+                profiles[1], null /*listener*/, clientId1);
+        assertThat(clientId1[0]).isNotEqualTo(TunerResourceManagerService.INVALID_CLIENT_ID);
+        mTunerResourceManagerService.getClientProfiles().get(clientId1[0])
+                .setPriority(clientPriorities[1]);
+
+        // Init frontend resources.
+        TunerFrontendInfo[] infos = new TunerFrontendInfo[2];
+        infos[0] =
+                new TunerFrontendInfo(0 /*id*/, FrontendSettings.TYPE_DVBT, 1 /*exclusiveGroupId*/);
+        infos[1] =
+                new TunerFrontendInfo(1 /*id*/, FrontendSettings.TYPE_DVBS, 1 /*exclusiveGroupId*/);
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos);
+
+        TunerFrontendRequest request =
+                new TunerFrontendRequest(clientId0[0] /*clientId*/, FrontendSettings.TYPE_DVBT);
+        int[] frontendId = new int[1];
+        try {
+            assertThat(mTunerResourceManagerService.requestFrontendInternal(request, frontendId))
+                    .isTrue();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+
+        request =
+                new TunerFrontendRequest(clientId1[0] /*clientId*/, FrontendSettings.TYPE_DVBT);
+        try {
+            assertThat(mTunerResourceManagerService.requestFrontendInternal(request, frontendId))
+                    .isFalse();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+        assertThat(mReclaimingId).isEqualTo(-1);
+
+        request =
+                new TunerFrontendRequest(clientId1[0] /*clientId*/, FrontendSettings.TYPE_DVBS);
+        try {
+            assertThat(mTunerResourceManagerService.requestFrontendInternal(request, frontendId))
+                    .isFalse();
+            assertThat(mReclaimingId).isEqualTo(-1);
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
+    @Test
+    public void requestFrontendTest_NoFrontendAvailable_RequestWithHigherPriority() {
+        // Register clients
+        ResourceClientProfile[] profiles = new ResourceClientProfile[2];
+        profiles[0] = new ResourceClientProfile("0" /*sessionId*/,
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK);
+        profiles[1] = new ResourceClientProfile("1" /*sessionId*/,
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK);
+        int[] clientPriorities = {100, 500};
+        int[] clientId0 = new int[1];
+        int[] clientId1 = new int[1];
+        mTunerResourceManagerService.registerClientProfileInternal(
+                profiles[0], null /*listener*/, clientId0);
+        assertThat(clientId0[0]).isNotEqualTo(TunerResourceManagerService.INVALID_CLIENT_ID);
+        mTunerResourceManagerService.getClientProfiles().get(clientId0[0])
+                .setPriority(clientPriorities[0]);
+        mTunerResourceManagerService.registerClientProfileInternal(
+                profiles[1], null /*listener*/, clientId1);
+        assertThat(clientId1[0]).isNotEqualTo(TunerResourceManagerService.INVALID_CLIENT_ID);
+        mTunerResourceManagerService.getClientProfiles().get(clientId1[0])
+                .setPriority(clientPriorities[1]);
+
+        // Init frontend resources.
+        TunerFrontendInfo[] infos = new TunerFrontendInfo[2];
+        infos[0] =
+                new TunerFrontendInfo(0 /*id*/, FrontendSettings.TYPE_DVBT, 1 /*exclusiveGroupId*/);
+        infos[1] =
+                new TunerFrontendInfo(1 /*id*/, FrontendSettings.TYPE_DVBS, 1 /*exclusiveGroupId*/);
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos);
+
+        TunerFrontendRequest request =
+                new TunerFrontendRequest(clientId0[0] /*clientId*/, FrontendSettings.TYPE_DVBT);
+        int[] frontendId = new int[1];
+        try {
+            assertThat(mTunerResourceManagerService.requestFrontendInternal(request, frontendId))
+                    .isTrue();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+        assertThat(frontendId[0]).isEqualTo(infos[0].getId());
+
+        request =
+                new TunerFrontendRequest(clientId1[0] /*clientId*/, FrontendSettings.TYPE_DVBS);
+        try {
+            assertThat(mTunerResourceManagerService.requestFrontendInternal(request, frontendId))
+                    .isTrue();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+        assertThat(frontendId[0]).isEqualTo(infos[1].getId());
+        assertThat(mTunerResourceManagerService.getFrontendResources().get(infos[0].getId())
+                .isInUse()).isTrue();
+        assertThat(mTunerResourceManagerService.getFrontendResources().get(infos[1].getId())
+                .isInUse()).isTrue();
+        assertThat(mTunerResourceManagerService.getFrontendResources()
+                .get(infos[0].getId()).getOwnerClientId()).isEqualTo(clientId1[0]);
+        assertThat(mTunerResourceManagerService.getFrontendResources()
+                .get(infos[1].getId()).getOwnerClientId()).isEqualTo(clientId1[0]);
+        assertThat(mReclaimingId).isEqualTo(clientId0[0]);
+    }
+
+    @Test
+    public void unregisterClientTest_usingFrontend() {
+        // Register client
+        ResourceClientProfile profile = new ResourceClientProfile("0" /*sessionId*/,
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK);
+        int[] clientId = new int[1];
+        mTunerResourceManagerService.registerClientProfileInternal(
+                profile, null /*listener*/, clientId);
+        assertThat(clientId[0]).isNotEqualTo(TunerResourceManagerService.INVALID_CLIENT_ID);
+
+        // Init frontend resources.
+        TunerFrontendInfo[] infos = new TunerFrontendInfo[2];
+        infos[0] =
+                new TunerFrontendInfo(0 /*id*/, FrontendSettings.TYPE_DVBT, 1 /*exclusiveGroupId*/);
+        infos[1] =
+                new TunerFrontendInfo(1 /*id*/, FrontendSettings.TYPE_DVBS, 1 /*exclusiveGroupId*/);
+        mTunerResourceManagerService.setFrontendInfoListInternal(infos);
+
+        TunerFrontendRequest request =
+                new TunerFrontendRequest(clientId[0] /*clientId*/, FrontendSettings.TYPE_DVBT);
+        int[] frontendId = new int[1];
+        try {
+            assertThat(mTunerResourceManagerService.requestFrontendInternal(request, frontendId))
+                    .isTrue();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+        assertThat(frontendId[0]).isEqualTo(infos[0].getId());
+        assertThat(mTunerResourceManagerService.getFrontendResources().get(infos[0].getId())
+                .isInUse()).isTrue();
+        assertThat(mTunerResourceManagerService.getFrontendResources().get(infos[1].getId())
+                .isInUse()).isTrue();
+
+        // Unregister client when using frontend
+        mTunerResourceManagerService.unregisterClientProfileInternal(clientId[0]);
+        assertThat(mTunerResourceManagerService.getFrontendResources().get(infos[0].getId())
+                .isInUse()).isFalse();
+        assertThat(mTunerResourceManagerService.getFrontendResources().get(infos[1].getId())
+                .isInUse()).isFalse();
+
+    }
+}

services/tests/servicestests/src/com/android/server/tv/tunerresourcemanager/UseCasePriorityHintsTest.java

@@ -0,0 +1,111 @@
+/*
+ * 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 com.android.server.tv.tunerresourcemanager;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.media.tv.TvInputService;
+import android.util.Slog;
+
+import androidx.test.filters.SmallTest;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+import org.xmlpull.v1.XmlPullParserException;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * Tests for {@link UseCasePriorityHints} class.
+ */
+@SmallTest
+@RunWith(JUnit4.class)
+public class UseCasePriorityHintsTest {
+    private static final String TAG = "UseCasePriorityHintsTest";
+    private UseCasePriorityHints mPriorityHints;
+
+    private final String mExampleXML =
+            "<!-- A sample Use Case Priority Hints xml -->"
+            + "<config version=\"1.0\" xmlns:xi=\"http://www.w3.org/2001/XInclude\">"
+            + "<useCaseDefault fgPriority=\"150\" bgPriority=\"50\"/>"
+            + "<useCasePreDefined type=\"USE_CASE_RECORD\" fgPriority=\"600\" bgPriority=\"500\"/>"
+            + "<useCasePreDefined type=\"USE_CASE_LIVE\" fgPriority=\"490\" bgPriority=\"400\"/>"
+            + "<useCasePreDefined type=\"USE_CASE_PLAYBACK\" fgPriority=\"480\""
+            + " bgPriority=\"300\"/>"
+            + "<useCasePreDefined type=\"USE_CASE_BACKGROUND\" fgPriority=\"180\""
+            + " bgPriority=\"100\"/>"
+            + "<useCaseVendor type=\"VENDOR_USE_CASE_1\" id=\"1001\" fgPriority=\"300\""
+            + " bgPriority=\"80\"/>"
+            + "</config>";
+
+    @Before
+    public void setUp() throws Exception {
+        mPriorityHints = new UseCasePriorityHints();
+        try {
+            mPriorityHints.parseInternal(
+                    new ByteArrayInputStream(mExampleXML.getBytes(StandardCharsets.UTF_8)));
+        } catch (IOException | XmlPullParserException e) {
+            Slog.e(TAG, "Error parse xml.", e);
+        }
+    }
+
+    @Test
+    public void parseTest_parseSampleXml() {
+        // Pre-defined foreground
+        assertThat(mPriorityHints.getForegroundPriority(
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_BACKGROUND)).isEqualTo(180);
+        assertThat(mPriorityHints.getForegroundPriority(
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_SCAN)).isEqualTo(150);
+        assertThat(mPriorityHints.getForegroundPriority(
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK)).isEqualTo(480);
+        assertThat(mPriorityHints.getForegroundPriority(
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_LIVE)).isEqualTo(490);
+        assertThat(mPriorityHints.getForegroundPriority(
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_RECORD)).isEqualTo(600);
+
+        // Pre-defined background
+        assertThat(mPriorityHints.getBackgroundPriority(
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_BACKGROUND)).isEqualTo(100);
+        assertThat(mPriorityHints.getBackgroundPriority(
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_SCAN)).isEqualTo(50);
+        assertThat(mPriorityHints.getBackgroundPriority(
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_PLAYBACK)).isEqualTo(300);
+        assertThat(mPriorityHints.getBackgroundPriority(
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_LIVE)).isEqualTo(400);
+        assertThat(mPriorityHints.getBackgroundPriority(
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_RECORD)).isEqualTo(500);
+
+        // Vendor use case
+        assertThat(mPriorityHints.getForegroundPriority(1001)).isEqualTo(300);
+        assertThat(mPriorityHints.getBackgroundPriority(1001)).isEqualTo(80);
+    }
+
+    @Test
+    public void isDefinedUseCaseTest_invalidUseCase() {
+        assertThat(mPriorityHints.isDefinedUseCase(1992)).isFalse();
+    }
+
+    @Test
+    public void isDefinedUseCaseTest_validUseCase() {
+        assertThat(mPriorityHints.isDefinedUseCase(1001)).isTrue();
+        assertThat(mPriorityHints.isDefinedUseCase(
+                TvInputService.PRIORITY_HINT_USE_CASE_TYPE_RECORD)).isTrue();
+    }
+}