content: /*
   * Copyright (C) 2019 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.video;
  
  import androidx.annotation.Nullable;
  import com.google.android.exoplayer2.util.ParsableByteArray;
  
  /** Dolby Vision configuration data. */
  public final class DolbyVisionConfig {
  
    /**
     * Parses Dolby Vision configuration data.
     *
     * @param data A {@link ParsableByteArray}, whose position is set to the start of the Dolby Vision
     *     configuration data to parse.
     * @return The {@link DolbyVisionConfig} corresponding to the configuration, or {@code null} if
     *     the configuration isn't supported.
     */
    @Nullable
    public static DolbyVisionConfig parse(ParsableByteArray data) {
      data.skipBytes(2); // dv_version_major, dv_version_minor
      int profileData = data.readUnsignedByte();
      int dvProfile = (profileData >> 1);
      int dvLevel = ((profileData & 0x1) << 5) | ((data.readUnsignedByte() >> 3) & 0x1F);
      String codecsPrefix;
      if (dvProfile == 4 || dvProfile == 5 || dvProfile == 7) {
        codecsPrefix = "dvhe";
      } else if (dvProfile == 8) {
        codecsPrefix = "hev1";
      } else if (dvProfile == 9) {
        codecsPrefix = "avc3";
      } else {
        return null;
      }
      String codecs = codecsPrefix + ".0" + dvProfile + (dvLevel < 10 ? ".0" : ".") + dvLevel;
      return new DolbyVisionConfig(dvProfile, dvLevel, codecs);
    }
  
    /** The profile number. */
    public final int profile;
    /** The level number. */
    public final int level;
    /** The RFC 6381 codecs string. */
    public final String codecs;
  
    private DolbyVisionConfig(int profile, int level, String codecs) {
      this.profile = profile;
      this.level = level;
      this.codecs = codecs;
    }
  }
  