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.drm;
  
  import android.annotation.TargetApi;
  import android.os.Looper;
  import com.google.android.exoplayer2.drm.DrmInitData.SchemeData;
  
  /**
   * Manages a DRM session.
   */
  @TargetApi(16)
  public interface DrmSessionManager<T extends ExoMediaCrypto> {
  
    /**
     * Returns whether the manager is capable of acquiring a session for the given
     * {@link DrmInitData}.
     *
     * @param drmInitData DRM initialization data.
     * @return Whether the manager is capable of acquiring a session for the given
     *     {@link DrmInitData}.
     */
    boolean canAcquireSession(DrmInitData drmInitData);
  
    /**
     * Acquires a {@link DrmSession} for the specified {@link DrmInitData}. The {@link DrmSession}
     * must be returned to {@link #releaseSession(DrmSession)} when it is no longer required.
     *
     * @param playbackLooper The looper associated with the media playback thread.
     * @param drmInitData DRM initialization data. All contained {@link SchemeData}s must contain
     *     non-null {@link SchemeData#data}.
     * @return The DRM session.
     */
    DrmSession<T> acquireSession(Looper playbackLooper, DrmInitData drmInitData);
  
    /**
     * Releases a {@link DrmSession}.
     */
    void releaseSession(DrmSession<T> drmSession);
  
  }
  