/*
 * Copyright 2021 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 androidx.media3.extractor;

import static com.google.common.truth.Truth.assertThat;

import androidx.media3.common.util.ParsableByteArray;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import org.junit.Test;
import org.junit.runner.RunWith;

/** Unit test for {@link HevcConfig}. */
@RunWith(AndroidJUnit4.class)
public final class HevcConfigTest {

  private static final byte[] HVCC_BOX_PAYLOAD =
      new byte[] {
        // Header
        1,
        1,
        96,
        0,
        0,
        0,
        -80,
        0,
        0,
        0,
        0,
        0,
        -103,
        -16,
        0,
        -4,
        -4,
        -8,
        -8,
        0,
        0,
        15,

        // Number of arrays
        3,

        // NAL unit type = VPS
        32,
        // Number of NAL units
        0,
        1,
        // NAL unit length
        0,
        23,
        // NAL unit
        64,
        1,
        12,
        1,
        -1,
        -1,
        1,
        96,
        0,
        0,
        3,
        0,
        -80,
        0,
        0,
        3,
        0,
        0,
        3,
        0,
        -103,
        -84,
        9,

        // NAL unit type = SPS
        33,
        // Number of NAL units
        0,
        1,
        // NAL unit length
        0,
        39,
        // NAL unit
        66,
        1,
        1,
        1,
        96,
        0,
        0,
        3,
        0,
        -80,
        0,
        0,
        3,
        0,
        0,
        3,
        0,
        -103,
        -96,
        1,
        -32,
        32,
        2,
        32,
        124,
        78,
        90,
        -18,
        76,
        -110,
        -22,
        86,
        10,
        12,
        12,
        5,
        -38,
        20,
        37,

        // NAL unit type = PPS
        34,
        // Number of NAL units
        0,
        1,
        // NAL unit length
        0,
        14,
        // NAL unit
        68,
        1,
        -64,
        -29,
        15,
        8,
        -80,
        96,
        48,
        24,
        12,
        115,
        8,
        64
      };

  @Test
  public void parseHevcDecoderConfigurationRecord() throws Exception {
    ParsableByteArray data = new ParsableByteArray(HVCC_BOX_PAYLOAD);
    HevcConfig hevcConfig = HevcConfig.parse(data);

    assertThat(hevcConfig.codecs).isEqualTo("hvc1.1.6.L153.B0");
    assertThat(hevcConfig.nalUnitLengthFieldLength).isEqualTo(4);
  }
}
