/*
 * 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 androidx.media3.common;

import static android.media.MediaCodecInfo.CodecProfileLevel.AACObjectHE;
import static android.media.MediaCodecInfo.CodecProfileLevel.AACObjectXHE;
import static com.google.common.truth.Truth.assertThat;

import androidx.annotation.Nullable;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import org.junit.Test;
import org.junit.runner.RunWith;

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

  @Test
  public void containsCodecsCorrespondingToMimeType_returnsCorrectResult() {
    assertThat(
            MimeTypes.containsCodecsCorrespondingToMimeType(
                /* codecs= */ "ac-3,mp4a.40.2,avc1.4D4015", MimeTypes.AUDIO_AAC))
        .isTrue();
    assertThat(
            MimeTypes.containsCodecsCorrespondingToMimeType(
                /* codecs= */ "ac-3,mp4a.40.2,avc1.4D4015", MimeTypes.AUDIO_AC3))
        .isTrue();
    assertThat(
            MimeTypes.containsCodecsCorrespondingToMimeType(
                /* codecs= */ "ac-3,mp4a.40.2,avc1.4D4015", MimeTypes.VIDEO_H264))
        .isTrue();
    assertThat(
            MimeTypes.containsCodecsCorrespondingToMimeType(
                /* codecs= */ "unknown-codec,mp4a.40.2,avc1.4D4015", MimeTypes.AUDIO_AAC))
        .isTrue();

    assertThat(
            MimeTypes.containsCodecsCorrespondingToMimeType(
                /* codecs= */ "unknown-codec,mp4a.40.2,avc1.4D4015", MimeTypes.AUDIO_AC3))
        .isFalse();
    assertThat(
            MimeTypes.containsCodecsCorrespondingToMimeType(
                /* codecs= */ null, MimeTypes.AUDIO_AC3))
        .isFalse();
    assertThat(
            MimeTypes.containsCodecsCorrespondingToMimeType(/* codecs= */ "", MimeTypes.AUDIO_AC3))
        .isFalse();
  }

  @Test
  public void getCodecsCorrespondingToMimeType_returnsCorrectResult() {
    assertThat(
            MimeTypes.getCodecsCorrespondingToMimeType(
                /* codecs= */ "avc1.4D5015,ac-3,mp4a.40.2,avc1.4D4015", MimeTypes.AUDIO_AAC))
        .isEqualTo("mp4a.40.2");
    assertThat(
            MimeTypes.getCodecsCorrespondingToMimeType(
                /* codecs= */ "avc1.4D5015,ac-3,mp4a.40.2,avc1.4D4015", MimeTypes.VIDEO_H264))
        .isEqualTo("avc1.4D5015,avc1.4D4015");
    assertThat(
            MimeTypes.getCodecsCorrespondingToMimeType(
                /* codecs= */ "avc1.4D5015,ac-3,mp4a.40.2,avc1.4D4015", MimeTypes.AUDIO_AC3))
        .isEqualTo("ac-3");
    assertThat(
            MimeTypes.getCodecsCorrespondingToMimeType(
                /* codecs= */ "unknown-codec,ac-3,mp4a.40.2,avc1.4D4015", MimeTypes.AUDIO_AC3))
        .isEqualTo("ac-3");

    assertThat(
            MimeTypes.getCodecsCorrespondingToMimeType(
                /* codecs= */ "avc1.4D5015,ac-3,mp4a.40.2,avc1.4D4015", MimeTypes.VIDEO_H265))
        .isNull();
    assertThat(
            MimeTypes.getCodecsCorrespondingToMimeType(
                /* codecs= */ "avc1.4D5015,ac-3,mp4a.40.2,avc1.4D4015", null))
        .isNull();
    assertThat(MimeTypes.getCodecsCorrespondingToMimeType(/* codecs= */ null, MimeTypes.AUDIO_AAC))
        .isNull();
  }

  @Test
  public void isText_returnsCorrectResult() {
    assertThat(MimeTypes.isText(MimeTypes.TEXT_VTT)).isTrue();
    assertThat(MimeTypes.isText(MimeTypes.TEXT_SSA)).isTrue();
    assertThat(MimeTypes.isText(MimeTypes.APPLICATION_CEA608)).isTrue();
    assertThat(MimeTypes.isText(MimeTypes.APPLICATION_CEA708)).isTrue();
    assertThat(MimeTypes.isText(MimeTypes.APPLICATION_MP4CEA608)).isTrue();
    assertThat(MimeTypes.isText(MimeTypes.APPLICATION_SUBRIP)).isTrue();
    assertThat(MimeTypes.isText(MimeTypes.APPLICATION_TTML)).isTrue();
    assertThat(MimeTypes.isText(MimeTypes.APPLICATION_TX3G)).isTrue();
    assertThat(MimeTypes.isText(MimeTypes.APPLICATION_MP4VTT)).isTrue();
    assertThat(MimeTypes.isText(MimeTypes.APPLICATION_VOBSUB)).isTrue();
    assertThat(MimeTypes.isText(MimeTypes.APPLICATION_PGS)).isTrue();
    assertThat(MimeTypes.isText(MimeTypes.APPLICATION_DVBSUBS)).isTrue();
    assertThat(MimeTypes.isText("text/custom")).isTrue();

    assertThat(MimeTypes.isText(MimeTypes.VIDEO_MP4)).isFalse();
    assertThat(MimeTypes.isText(MimeTypes.VIDEO_H264)).isFalse();
    assertThat(MimeTypes.isText(MimeTypes.AUDIO_MP4)).isFalse();
    assertThat(MimeTypes.isText(MimeTypes.AUDIO_AAC)).isFalse();
    assertThat(MimeTypes.isText("application/custom")).isFalse();
  }

  @Test
  public void isImage_returnsCorrectResult() {
    assertThat(MimeTypes.isImage(MimeTypes.IMAGE_JPEG)).isTrue();
    assertThat(MimeTypes.isImage("image/custom")).isTrue();

    assertThat(MimeTypes.isImage(MimeTypes.VIDEO_MP4)).isFalse();
    assertThat(MimeTypes.isImage("application/custom")).isFalse();
  }

  @Test
  public void getTrackType_returnsCorrectResult() {
    assertThat(MimeTypes.getTrackType(MimeTypes.VIDEO_H264)).isEqualTo(C.TRACK_TYPE_VIDEO);
    assertThat(MimeTypes.getTrackType("video/custom")).isEqualTo(C.TRACK_TYPE_VIDEO);

    assertThat(MimeTypes.getTrackType(MimeTypes.AUDIO_AAC)).isEqualTo(C.TRACK_TYPE_AUDIO);
    assertThat(MimeTypes.getTrackType("audio/custom")).isEqualTo(C.TRACK_TYPE_AUDIO);

    assertThat(MimeTypes.getTrackType(MimeTypes.TEXT_SSA)).isEqualTo(C.TRACK_TYPE_TEXT);
    assertThat(MimeTypes.getTrackType("text/custom")).isEqualTo(C.TRACK_TYPE_TEXT);

    assertThat(MimeTypes.getTrackType(MimeTypes.IMAGE_JPEG)).isEqualTo(C.TRACK_TYPE_IMAGE);
    assertThat(MimeTypes.getTrackType("image/custom")).isEqualTo(C.TRACK_TYPE_IMAGE);

    assertThat(MimeTypes.getTrackType(MimeTypes.APPLICATION_CEA608)).isEqualTo(C.TRACK_TYPE_TEXT);
    assertThat(MimeTypes.getTrackType(MimeTypes.APPLICATION_EMSG)).isEqualTo(C.TRACK_TYPE_METADATA);
    assertThat(MimeTypes.getTrackType(MimeTypes.APPLICATION_CAMERA_MOTION))
        .isEqualTo(C.TRACK_TYPE_CAMERA_MOTION);
    assertThat(MimeTypes.getTrackType("application/custom")).isEqualTo(C.TRACK_TYPE_UNKNOWN);
  }

  @Test
  public void getMediaMimeType_fromValidCodecs_returnsCorrectMimeType() {
    assertThat(MimeTypes.getMediaMimeType("avc1")).isEqualTo(MimeTypes.VIDEO_H264);
    assertThat(MimeTypes.getMediaMimeType("avc1.42E01E")).isEqualTo(MimeTypes.VIDEO_H264);
    assertThat(MimeTypes.getMediaMimeType("avc1.42E01F")).isEqualTo(MimeTypes.VIDEO_H264);
    assertThat(MimeTypes.getMediaMimeType("avc1.4D401F")).isEqualTo(MimeTypes.VIDEO_H264);
    assertThat(MimeTypes.getMediaMimeType("avc1.4D4028")).isEqualTo(MimeTypes.VIDEO_H264);
    assertThat(MimeTypes.getMediaMimeType("avc1.640028")).isEqualTo(MimeTypes.VIDEO_H264);
    assertThat(MimeTypes.getMediaMimeType("avc1.640029")).isEqualTo(MimeTypes.VIDEO_H264);
    assertThat(MimeTypes.getMediaMimeType("avc3")).isEqualTo(MimeTypes.VIDEO_H264);
    assertThat(MimeTypes.getMediaMimeType("hev1")).isEqualTo(MimeTypes.VIDEO_H265);
    assertThat(MimeTypes.getMediaMimeType("hvc1")).isEqualTo(MimeTypes.VIDEO_H265);
    assertThat(MimeTypes.getMediaMimeType("vp08")).isEqualTo(MimeTypes.VIDEO_VP8);
    assertThat(MimeTypes.getMediaMimeType("vp8")).isEqualTo(MimeTypes.VIDEO_VP8);
    assertThat(MimeTypes.getMediaMimeType("vp09")).isEqualTo(MimeTypes.VIDEO_VP9);
    assertThat(MimeTypes.getMediaMimeType("vp9")).isEqualTo(MimeTypes.VIDEO_VP9);

    assertThat(MimeTypes.getMediaMimeType("ac-3")).isEqualTo(MimeTypes.AUDIO_AC3);
    assertThat(MimeTypes.getMediaMimeType("dac3")).isEqualTo(MimeTypes.AUDIO_AC3);
    assertThat(MimeTypes.getMediaMimeType("dec3")).isEqualTo(MimeTypes.AUDIO_E_AC3);
    assertThat(MimeTypes.getMediaMimeType("ec-3")).isEqualTo(MimeTypes.AUDIO_E_AC3);
    assertThat(MimeTypes.getMediaMimeType("ec+3")).isEqualTo(MimeTypes.AUDIO_E_AC3_JOC);
    assertThat(MimeTypes.getMediaMimeType("dtsc")).isEqualTo(MimeTypes.AUDIO_DTS);
    assertThat(MimeTypes.getMediaMimeType("dtse")).isEqualTo(MimeTypes.AUDIO_DTS_EXPRESS);
    assertThat(MimeTypes.getMediaMimeType("dtsh")).isEqualTo(MimeTypes.AUDIO_DTS_HD);
    assertThat(MimeTypes.getMediaMimeType("dtsl")).isEqualTo(MimeTypes.AUDIO_DTS_HD);
    assertThat(MimeTypes.getMediaMimeType("dtsx")).isEqualTo(MimeTypes.AUDIO_DTS_X);
    assertThat(MimeTypes.getMediaMimeType("opus")).isEqualTo(MimeTypes.AUDIO_OPUS);
    assertThat(MimeTypes.getMediaMimeType("vorbis")).isEqualTo(MimeTypes.AUDIO_VORBIS);
    assertThat(MimeTypes.getMediaMimeType("mp4a")).isEqualTo(MimeTypes.AUDIO_AAC);
    assertThat(MimeTypes.getMediaMimeType("mp4a.40.02")).isEqualTo(MimeTypes.AUDIO_AAC);
    assertThat(MimeTypes.getMediaMimeType("mp4a.40.05")).isEqualTo(MimeTypes.AUDIO_AAC);
    assertThat(MimeTypes.getMediaMimeType("mp4a.40.2")).isEqualTo(MimeTypes.AUDIO_AAC);
    assertThat(MimeTypes.getMediaMimeType("mp4a.40.5")).isEqualTo(MimeTypes.AUDIO_AAC);
    assertThat(MimeTypes.getMediaMimeType("mp4a.40.29")).isEqualTo(MimeTypes.AUDIO_AAC);
    assertThat(MimeTypes.getMediaMimeType("mp4a.66")).isEqualTo(MimeTypes.AUDIO_AAC);
    assertThat(MimeTypes.getMediaMimeType("mp4a.67")).isEqualTo(MimeTypes.AUDIO_AAC);
    assertThat(MimeTypes.getMediaMimeType("mp4a.68")).isEqualTo(MimeTypes.AUDIO_AAC);
    assertThat(MimeTypes.getMediaMimeType("mp4a.69")).isEqualTo(MimeTypes.AUDIO_MPEG);
    assertThat(MimeTypes.getMediaMimeType("mp4a.6B")).isEqualTo(MimeTypes.AUDIO_MPEG);
    assertThat(MimeTypes.getMediaMimeType("mp4a.a5")).isEqualTo(MimeTypes.AUDIO_AC3);
    assertThat(MimeTypes.getMediaMimeType("mp4a.A5")).isEqualTo(MimeTypes.AUDIO_AC3);
    assertThat(MimeTypes.getMediaMimeType("mp4a.a6")).isEqualTo(MimeTypes.AUDIO_E_AC3);
    assertThat(MimeTypes.getMediaMimeType("mp4a.A6")).isEqualTo(MimeTypes.AUDIO_E_AC3);
    assertThat(MimeTypes.getMediaMimeType("mp4a.A9")).isEqualTo(MimeTypes.AUDIO_DTS);
    assertThat(MimeTypes.getMediaMimeType("mp4a.AC")).isEqualTo(MimeTypes.AUDIO_DTS);
    assertThat(MimeTypes.getMediaMimeType("mp4a.AA")).isEqualTo(MimeTypes.AUDIO_DTS_HD);
    assertThat(MimeTypes.getMediaMimeType("mp4a.AB")).isEqualTo(MimeTypes.AUDIO_DTS_HD);
    assertThat(MimeTypes.getMediaMimeType("mp4a.AD")).isEqualTo(MimeTypes.AUDIO_OPUS);

    assertThat(MimeTypes.getMediaMimeType("wvtt")).isEqualTo(MimeTypes.TEXT_VTT);
    assertThat(MimeTypes.getMediaMimeType("stpp.")).isEqualTo(MimeTypes.APPLICATION_TTML);
    assertThat(MimeTypes.getMediaMimeType("stpp.ttml.im1t")).isEqualTo(MimeTypes.APPLICATION_TTML);
    assertThat(MimeTypes.getMediaMimeType("eia608.")).isEqualTo(MimeTypes.APPLICATION_CEA608);
    assertThat(MimeTypes.getMediaMimeType("cea608")).isEqualTo(MimeTypes.APPLICATION_CEA608);
    assertThat(MimeTypes.getMediaMimeType("cea708")).isEqualTo(MimeTypes.APPLICATION_CEA708);
  }

  @Test
  public void getMimeTypeFromMp4ObjectType_forValidObjectType_returnsCorrectMimeType() {
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0x60)).isEqualTo(MimeTypes.VIDEO_MPEG2);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0x61)).isEqualTo(MimeTypes.VIDEO_MPEG2);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0x20)).isEqualTo(MimeTypes.VIDEO_MP4V);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0x21)).isEqualTo(MimeTypes.VIDEO_H264);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0x23)).isEqualTo(MimeTypes.VIDEO_H265);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0x6B)).isEqualTo(MimeTypes.AUDIO_MPEG);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0x40)).isEqualTo(MimeTypes.AUDIO_AAC);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0x66)).isEqualTo(MimeTypes.AUDIO_AAC);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0x67)).isEqualTo(MimeTypes.AUDIO_AAC);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0x68)).isEqualTo(MimeTypes.AUDIO_AAC);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0xA5)).isEqualTo(MimeTypes.AUDIO_AC3);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0xA6)).isEqualTo(MimeTypes.AUDIO_E_AC3);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0xA9)).isEqualTo(MimeTypes.AUDIO_DTS);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0xAC)).isEqualTo(MimeTypes.AUDIO_DTS);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0xAA)).isEqualTo(MimeTypes.AUDIO_DTS_HD);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0xAB)).isEqualTo(MimeTypes.AUDIO_DTS_HD);
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0xAD)).isEqualTo(MimeTypes.AUDIO_OPUS);
  }

  @Test
  public void getMimeTypeFromMp4ObjectType_forInvalidObjectType_returnsNull() {
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0)).isNull();
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0x600)).isNull();
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(0x01)).isNull();
    assertThat(MimeTypes.getMimeTypeFromMp4ObjectType(-1)).isNull();
  }

  @Test
  public void getObjectTypeFromMp4aRFC6381CodecString_onInvalidInput_returnsNull() {
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("")).isNull();
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("abc")).isNull();
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("mp4a.")).isNull();
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("mp4a.1")).isNull();
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("mp4a.a")).isNull();
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("mp4a.1g")).isNull();
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("mp4v.20.9")).isNull();
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("mp4a.100.1")).isNull();
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("mp4a.10.")).isNull();
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("mp4a.a.1")).isNull();
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("mp4a.10,01")).isNull();
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("mp4a.1f.f1")).isNull();
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("mp4a.1a.a")).isNull();
    assertThat(MimeTypes.getObjectTypeFromMp4aRFC6381CodecString("mp4a.01.110")).isNull();
  }

  @Test
  public void getObjectTypeFromMp4aRFC6381CodecString_onValidInput_returnsCorrectObjectType() {
    assert_getObjectTypeFromMp4aRFC6381CodecString_for_returns("mp4a.00.0", 0x00, 0);
    assert_getObjectTypeFromMp4aRFC6381CodecString_for_returns("mp4a.01.01", 0x01, 1);
    assert_getObjectTypeFromMp4aRFC6381CodecString_for_returns("mp4a.10.10", 0x10, 10);
    assert_getObjectTypeFromMp4aRFC6381CodecString_for_returns("mp4a.a0.90", 0xa0, 90);
    assert_getObjectTypeFromMp4aRFC6381CodecString_for_returns("mp4a.Ff.99", 0xff, 99);
    assert_getObjectTypeFromMp4aRFC6381CodecString_for_returns("mp4a.D0.9", 0xd0, 9);
  }

  private static void assert_getObjectTypeFromMp4aRFC6381CodecString_for_returns(
      String codec, int expectedObjectTypeIndicator, int expectedAudioObjectTypeIndicator) {
    @Nullable
    MimeTypes.Mp4aObjectType objectType = MimeTypes.getObjectTypeFromMp4aRFC6381CodecString(codec);
    assertThat(objectType).isNotNull();
    assertThat(objectType.objectTypeIndication).isEqualTo(expectedObjectTypeIndicator);
    assertThat(objectType.audioObjectTypeIndication).isEqualTo(expectedAudioObjectTypeIndicator);
  }

  @Test
  public void allSamplesAreSyncSamples_forAac_usesCodec() {
    assertThat(MimeTypes.allSamplesAreSyncSamples(MimeTypes.AUDIO_AAC, "mp4a.40." + AACObjectHE))
        .isTrue();
    assertThat(MimeTypes.allSamplesAreSyncSamples(MimeTypes.AUDIO_AAC, "mp4a.40." + AACObjectXHE))
        .isFalse();
    assertThat(MimeTypes.allSamplesAreSyncSamples(MimeTypes.AUDIO_AAC, "mp4a.40")).isFalse();
    assertThat(MimeTypes.allSamplesAreSyncSamples(MimeTypes.AUDIO_AAC, "mp4a.40.")).isFalse();
    assertThat(MimeTypes.allSamplesAreSyncSamples(MimeTypes.AUDIO_AAC, "invalid")).isFalse();
    assertThat(MimeTypes.allSamplesAreSyncSamples(MimeTypes.AUDIO_AAC, /* codec= */ null))
        .isFalse();
  }
}
