content: /*
   * Copyright (C) 2018 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.audio;
  
  import static com.google.common.truth.Truth.assertThat;
  
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import com.google.android.exoplayer2.util.Util;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  /** Unit tests for {@link Ac3Util}. */
  @RunWith(AndroidJUnit4.class)
  public final class Ac3UtilTest {
  
    private static final int TRUEHD_SYNCFRAME_SAMPLE_COUNT = 40;
    private static final byte[] TRUEHD_SYNCFRAME_HEADER =
        Util.getBytesFromHexString("C07504D8F8726FBA0097C00FB7520000");
    private static final byte[] TRUEHD_NON_SYNCFRAME_HEADER =
        Util.getBytesFromHexString("A025048860224E6F6DEDB6D5B6DBAFE6");
  
    @Test
    public void parseTrueHdSyncframeAudioSampleCount_nonSyncframe() {
      assertThat(Ac3Util.parseTrueHdSyncframeAudioSampleCount(TRUEHD_NON_SYNCFRAME_HEADER))
          .isEqualTo(0);
    }
  
    @Test
    public void parseTrueHdSyncframeAudioSampleCount_syncframe() {
      assertThat(Ac3Util.parseTrueHdSyncframeAudioSampleCount(TRUEHD_SYNCFRAME_HEADER))
          .isEqualTo(TRUEHD_SYNCFRAME_SAMPLE_COUNT);
    }
  }
  