90 lines
2.6 KiB
Java
90 lines
2.6 KiB
Java
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/*
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* Copyright 2020 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 android.media;
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import android.annotation.NonNull;
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import android.annotation.Nullable;
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import android.text.TextUtils;
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import android.util.Log;
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import com.android.internal.util.Preconditions;
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/**
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* @hide
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*/
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public class MediaRouter2Utils {
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static final String TAG = "MR2Utils";
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static final String SEPARATOR = ":";
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@NonNull
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public static String toUniqueId(@NonNull String providerId, @NonNull String id) {
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Preconditions.checkArgument(!TextUtils.isEmpty(providerId)
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&& !TextUtils.isEmpty(id));
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return providerId + SEPARATOR + id;
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}
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/**
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* Gets provider ID from unique ID.
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* If the corresponding provider ID could not be generated, it will return null.
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*/
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@Nullable
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public static String getProviderId(@NonNull String uniqueId) {
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if (TextUtils.isEmpty(uniqueId)) {
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Log.w(TAG, "getProviderId: uniqueId shouldn't be empty");
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return null;
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}
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int firstIndexOfSeparator = uniqueId.indexOf(SEPARATOR);
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if (firstIndexOfSeparator == -1) {
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return null;
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}
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String providerId = uniqueId.substring(0, firstIndexOfSeparator);
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if (TextUtils.isEmpty(providerId)) {
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return null;
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}
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return providerId;
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}
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/**
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* Gets the original ID (i.e. non-unique route/session ID) from unique ID.
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* If the corresponding ID could not be generated, it will return null.
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*/
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@Nullable
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public static String getOriginalId(@NonNull String uniqueId) {
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if (TextUtils.isEmpty(uniqueId)) {
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Log.w(TAG, "getOriginalId: uniqueId shouldn't be empty");
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return null;
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}
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int firstIndexOfSeparator = uniqueId.indexOf(SEPARATOR);
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if (firstIndexOfSeparator == -1 || firstIndexOfSeparator + 1 >= uniqueId.length()) {
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return null;
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}
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String providerId = uniqueId.substring(firstIndexOfSeparator + 1);
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if (TextUtils.isEmpty(providerId)) {
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return null;
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}
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return providerId;
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}
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}
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