content: /*
   * Copyright (C) 2016 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.google.android.exoplayer2;
  
  import java.util.HashSet;
  
  /**
   * Information about the ExoPlayer library.
   */
  public final class ExoPlayerLibraryInfo {
  
    /**
     * A tag to use when logging library information.
     */
    public static final String TAG = "ExoPlayer";
  
    /** The version of the library expressed as a string, for example "1.2.3". */
    // Intentionally hardcoded. Do not derive from other constants (e.g. VERSION_INT) or vice versa.
    public static final String VERSION = "2.7.1";
  
    /** The version of the library expressed as {@code "ExoPlayerLib/" + VERSION}. */
    // Intentionally hardcoded. Do not derive from other constants (e.g. VERSION) or vice versa.
    public static final String VERSION_SLASHY = "ExoPlayerLib/2.7.1";
  
    /**
     * The version of the library expressed as an integer, for example 1002003.
     *
     * <p>Three digits are used for each component of {@link #VERSION}. For example "1.2.3" has the
     * corresponding integer version 1002003 (001-002-003), and "123.45.6" has the corresponding
     * integer version 123045006 (123-045-006).
     */
    // Intentionally hardcoded. Do not derive from other constants (e.g. VERSION) or vice versa.
    public static final int VERSION_INT = 2007001;
  
    /**
     * Whether the library was compiled with {@link com.google.android.exoplayer2.util.Assertions}
     * checks enabled.
     */
    public static final boolean ASSERTIONS_ENABLED = true;
  
    /**
     * Whether the library was compiled with {@link com.google.android.exoplayer2.util.TraceUtil}
     * trace enabled.
     */
    public static final boolean TRACE_ENABLED = true;
  
    private static final HashSet<String> registeredModules = new HashSet<>();
    private static String registeredModulesString = "goog.exo.core";
  
    private ExoPlayerLibraryInfo() {} // Prevents instantiation.
  
    /**
     * Returns a string consisting of registered module names separated by ", ".
     */
    public static synchronized String registeredModules() {
      return registeredModulesString;
    }
  
    /**
     * Registers a module to be returned in the {@link #registeredModules()} string.
     *
     * @param name The name of the module being registered.
     */
    public static synchronized void registerModule(String name) {
      if (registeredModules.add(name)) {
        registeredModulesString = registeredModulesString + ", " + name;
      }
    }
  
  }
  