Make DashMediaSource add the media item to the timeline

PiperOrigin-RevId: 312646461

Make DashMediaSource add the media item to the timeline
PiperOrigin-RevId: 312646461
634634f8 · bachinger · tonihei · 63522ea5 · 634634f8 · 634634f8
Commit 634634f8 authored May 21, 2020 by bachinger Committed by tonihei May 21, 2020
Showing with 174 additions and 97 deletions
library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaSource.java
library/dash/src/test/java/com/google/android/exoplayer2/source/dash/DashMediaSourceTest.java
--- a/library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaSource.java
+++ b/library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaSource.java
@@ -15,6 +15,9 @@
 */
 package com.google.android.exoplayer2.source.dash;
+import static com.google.android.exoplayer2.util.Assertions.checkNotNull;
+import static com.google.android.exoplayer2.util.Util.castNonNull;
 import android.net.Uri;
 import android.os.Handler;
 import android.os.SystemClock;
@@ -58,6 +61,7 @@ import com.google.android.exoplayer2.upstream.ParsingLoadable;
 import com.google.android.exoplayer2.upstream.TransferListener;
 import com.google.android.exoplayer2.util.Assertions;
 import com.google.android.exoplayer2.util.Log;
+import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.android.exoplayer2.util.SntpClient;
 import com.google.android.exoplayer2.util.Util;
 import java.io.BufferedReader;
@@ -118,7 +122,7 @@ public final class DashMediaSource extends BaseMediaSource {
    public Factory(
        DashChunkSource.Factory chunkSourceFactory,
        @Nullable DataSource.Factory manifestDataSourceFactory) {
-      this.chunkSourceFactory = Assertions.checkNotNull(chunkSourceFactory);
+      this.chunkSourceFactory = checkNotNull(chunkSourceFactory);
      this.manifestDataSourceFactory = manifestDataSourceFactory;
      drmSessionManager = DrmSessionManager.getDummyDrmSessionManager();
      loadErrorHandlingPolicy = new DefaultLoadErrorHandlingPolicy();
@@ -265,8 +269,14 @@ public final class DashMediaSource extends BaseMediaSource {
        manifest = manifest.copy(streamKeys);
      }
      return new DashMediaSource(
+          new MediaItem.Builder()
+              .setUri(Uri.EMPTY)
+              .setMediaId(DUMMY_MEDIA_ID)
+              .setMimeType(MimeTypes.APPLICATION_MPD)
+              .setStreamKeys(streamKeys)
+              .setTag(tag)
+              .build(),
          manifest,
-          /* manifestUri= */ null,
          /* manifestDataSourceFactory= */ null,
          /* manifestParser= */ null,
          chunkSourceFactory,
@@ -274,8 +284,7 @@ public final class DashMediaSource extends BaseMediaSource {
          drmSessionManager,
          loadErrorHandlingPolicy,
          livePresentationDelayMs,
-          livePresentationDelayOverridesManifest,
+          livePresentationDelayOverridesManifest);
-          tag);
    }
    /**
@@ -298,6 +307,7 @@ public final class DashMediaSource extends BaseMediaSource {
     * @deprecated Use {@link #createMediaSource(Uri)} and {@link #addEventListener(Handler,
     *     MediaSourceEventListener)} instead.
     */
+    @SuppressWarnings("deprecation")
    @Deprecated
    public DashMediaSource createMediaSource(
        Uri manifestUri,
@@ -315,7 +325,12 @@ public final class DashMediaSource extends BaseMediaSource {
    @Deprecated
    @Override
    public DashMediaSource createMediaSource(Uri uri) {
-      return createMediaSource(new MediaItem.Builder().setUri(uri).build());
+      return createMediaSource(
+          new MediaItem.Builder()
+              .setUri(uri)
+              .setMimeType(MimeTypes.APPLICATION_MPD)
+              .setTag(tag)
+              .build());
    }
    /**
@@ -327,7 +342,7 @@ public final class DashMediaSource extends BaseMediaSource {
     */
    @Override
    public DashMediaSource createMediaSource(MediaItem mediaItem) {
-      Assertions.checkNotNull(mediaItem.playbackProperties);
+      checkNotNull(mediaItem.playbackProperties);
      @Nullable ParsingLoadable.Parser<? extends DashManifest> manifestParser = this.manifestParser;
      if (manifestParser == null) {
        manifestParser = new DashManifestParser();
@@ -339,9 +354,14 @@ public final class DashMediaSource extends BaseMediaSource {
      if (!streamKeys.isEmpty()) {
        manifestParser = new FilteringManifestParser<>(manifestParser, streamKeys);
      }
+      if (mediaItem.playbackProperties.tag == null && tag != null) {
+        mediaItem = mediaItem.buildUpon().setTag(tag).setStreamKeys(streamKeys).build();
+      } else if (mediaItem.playbackProperties.streamKeys.isEmpty() && !streamKeys.isEmpty()) {
+        mediaItem = mediaItem.buildUpon().setStreamKeys(streamKeys).build();
+      }
      return new DashMediaSource(
+          mediaItem,
          /* manifest= */ null,
-          mediaItem.playbackProperties.uri,
          manifestDataSourceFactory,
          manifestParser,
          chunkSourceFactory,
@@ -349,8 +369,7 @@ public final class DashMediaSource extends BaseMediaSource {
          drmSessionManager,
          loadErrorHandlingPolicy,
          livePresentationDelayMs,
-          livePresentationDelayOverridesManifest,
+          livePresentationDelayOverridesManifest);
-          mediaItem.playbackProperties.tag != null ? mediaItem.playbackProperties.tag : tag);
    }
    @Override
@@ -371,6 +390,10 @@ public final class DashMediaSource extends BaseMediaSource {
  /** @deprecated Use of this parameter is no longer necessary. */
  @Deprecated public static final long DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS = -1;
+  /** The media id used by media items of dash media sources without a manifest URI. */
+  public static final String DUMMY_MEDIA_ID =
+      "com.google.android.exoplayer2.source.dash.DashMediaSource";
  /**
   * The interval in milliseconds between invocations of {@link
   * MediaSourceCaller#onSourceInfoRefreshed(MediaSource, Timeline)} when the source's {@link
@@ -401,7 +424,6 @@ public final class DashMediaSource extends BaseMediaSource {
  private final Runnable simulateManifestRefreshRunnable;
  private final PlayerEmsgCallback playerEmsgCallback;
  private final LoaderErrorThrower manifestLoadErrorThrower;
-  @Nullable private final Object tag;
  private DataSource dataSource;
  private Loader loader;
@@ -410,7 +432,8 @@ public final class DashMediaSource extends BaseMediaSource {
  private IOException manifestFatalError;
  private Handler handler;
-  private Uri initialManifestUri;
+  private MediaItem mediaItem;
+  private MediaItem.PlaybackProperties playbackProperties;
  private Uri manifestUri;
  private DashManifest manifest;
  private boolean manifestLoadPending;
@@ -423,15 +446,7 @@ public final class DashMediaSource extends BaseMediaSource {
  private int firstPeriodId;
-  /**
+  /** @deprecated Use {@link Factory} instead. */
-   * Constructs an instance to play a given {@link DashManifest}, which must be static.
-   *
-   * @param manifest The manifest. {@link DashManifest#dynamic} must be false.
-   * @param chunkSourceFactory A factory for {@link DashChunkSource} instances.
-   * @param eventHandler A handler for events. May be null if delivery of events is not required.
-   * @param eventListener A listener of events. May be null if delivery of events is not required.
-   * @deprecated Use {@link Factory} instead.
-   */
  @Deprecated
  @SuppressWarnings("deprecation")
  public DashMediaSource(
@@ -447,16 +462,7 @@ public final class DashMediaSource extends BaseMediaSource {
        eventListener);
  }
-  /**
+  /** @deprecated Use {@link Factory} instead. */
-   * Constructs an instance to play a given {@link DashManifest}, which must be static.
-   *
-   * @param manifest The manifest. {@link DashManifest#dynamic} must be false.
-   * @param chunkSourceFactory A factory for {@link DashChunkSource} instances.
-   * @param minLoadableRetryCount The minimum number of times to retry if a loading error occurs.
-   * @param eventHandler A handler for events. May be null if delivery of events is not required.
-   * @param eventListener A listener of events. May be null if delivery of events is not required.
-   * @deprecated Use {@link Factory} instead.
-   */
  @Deprecated
  public DashMediaSource(
      DashManifest manifest,
@@ -465,8 +471,12 @@ public final class DashMediaSource extends BaseMediaSource {
      @Nullable Handler eventHandler,
      @Nullable MediaSourceEventListener eventListener) {
    this(
+        new MediaItem.Builder()
+            .setMediaId(DUMMY_MEDIA_ID)
+            .setMimeType(MimeTypes.APPLICATION_MPD)
+            .setUri(Uri.EMPTY)
+            .build(),
        manifest,
-        /* manifestUri= */ null,
        /* manifestDataSourceFactory= */ null,
        /* manifestParser= */ null,
        chunkSourceFactory,
@@ -474,25 +484,13 @@ public final class DashMediaSource extends BaseMediaSource {
        DrmSessionManager.getDummyDrmSessionManager(),
        new DefaultLoadErrorHandlingPolicy(minLoadableRetryCount),
        DEFAULT_LIVE_PRESENTATION_DELAY_MS,
-        /* livePresentationDelayOverridesManifest= */ false,
+        /* livePresentationDelayOverridesManifest= */ false);
-        /* tag= */ null);
    if (eventHandler != null && eventListener != null) {
      addEventListener(eventHandler, eventListener);
    }
  }
-  /**
+  /** @deprecated Use {@link Factory} instead. */
-   * Constructs an instance to play the manifest at a given {@link Uri}, which may be dynamic or
-   * static.
-   *
-   * @param manifestUri The manifest {@link Uri}.
-   * @param manifestDataSourceFactory A factory for {@link DataSource} instances that will be used
-   *     to load (and refresh) the manifest.
-   * @param chunkSourceFactory A factory for {@link DashChunkSource} instances.
-   * @param eventHandler A handler for events. May be null if delivery of events is not required.
-   * @param eventListener A listener of events. May be null if delivery of events is not required.
-   * @deprecated Use {@link Factory} instead.
-   */
  @Deprecated
  @SuppressWarnings("deprecation")
  public DashMediaSource(
@@ -511,23 +509,7 @@ public final class DashMediaSource extends BaseMediaSource {
        eventListener);
  }
-  /**
+  /** @deprecated Use {@link Factory} instead. */
-   * Constructs an instance to play the manifest at a given {@link Uri}, which may be dynamic or
-   * static.
-   *
-   * @param manifestUri The manifest {@link Uri}.
-   * @param manifestDataSourceFactory A factory for {@link DataSource} instances that will be used
-   *     to load (and refresh) the manifest.
-   * @param chunkSourceFactory A factory for {@link DashChunkSource} instances.
-   * @param minLoadableRetryCount The minimum number of times to retry if a loading error occurs.
-   * @param livePresentationDelayMs For live playbacks, the duration in milliseconds by which the
-   *     default start position should precede the end of the live window. Use {@link
-   *     #DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS} to use the value specified by the
-   *     manifest, if present.
-   * @param eventHandler A handler for events. May be null if delivery of events is not required.
-   * @param eventListener A listener of events. May be null if delivery of events is not required.
-   * @deprecated Use {@link Factory} instead.
-   */
  @Deprecated
  @SuppressWarnings("deprecation")
  public DashMediaSource(
@@ -549,24 +531,7 @@ public final class DashMediaSource extends BaseMediaSource {
        eventListener);
  }
-  /**
+  /** @deprecated Use {@link Factory} instead. */
-   * Constructs an instance to play the manifest at a given {@link Uri}, which may be dynamic or
-   * static.
-   *
-   * @param manifestUri The manifest {@link Uri}.
-   * @param manifestDataSourceFactory A factory for {@link DataSource} instances that will be used
-   *     to load (and refresh) the manifest.
-   * @param manifestParser A parser for loaded manifest data.
-   * @param chunkSourceFactory A factory for {@link DashChunkSource} instances.
-   * @param minLoadableRetryCount The minimum number of times to retry if a loading error occurs.
-   * @param livePresentationDelayMs For live playbacks, the duration in milliseconds by which the
-   *     default start position should precede the end of the live window. Use {@link
-   *     #DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS} to use the value specified by the
-   *     manifest, if present.
-   * @param eventHandler A handler for events. May be null if delivery of events is not required.
-   * @param eventListener A listener of events. May be null if delivery of events is not required.
-   * @deprecated Use {@link Factory} instead.
-   */
  @Deprecated
  @SuppressWarnings("deprecation")
  public DashMediaSource(
@@ -579,8 +544,8 @@ public final class DashMediaSource extends BaseMediaSource {
      @Nullable Handler eventHandler,
      @Nullable MediaSourceEventListener eventListener) {
    this(
+        new MediaItem.Builder().setUri(manifestUri).setMimeType(MimeTypes.APPLICATION_MPD).build(),
        /* manifest= */ null,
-        manifestUri,
        manifestDataSourceFactory,
        manifestParser,
        chunkSourceFactory,
@@ -590,16 +555,15 @@ public final class DashMediaSource extends BaseMediaSource {
        livePresentationDelayMs == DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS
            ? DEFAULT_LIVE_PRESENTATION_DELAY_MS
            : livePresentationDelayMs,
-        livePresentationDelayMs != DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS,
+        livePresentationDelayMs != DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS);
-        /* tag= */ null);
    if (eventHandler != null && eventListener != null) {
      addEventListener(eventHandler, eventListener);
    }
  }
  private DashMediaSource(
+      MediaItem mediaItem,
      @Nullable DashManifest manifest,
-      @Nullable Uri manifestUri,
      @Nullable DataSource.Factory manifestDataSourceFactory,
      @Nullable ParsingLoadable.Parser<? extends DashManifest> manifestParser,
      DashChunkSource.Factory chunkSourceFactory,
@@ -607,11 +571,11 @@ public final class DashMediaSource extends BaseMediaSource {
      DrmSessionManager drmSessionManager,
      LoadErrorHandlingPolicy loadErrorHandlingPolicy,
      long livePresentationDelayMs,
-      boolean livePresentationDelayOverridesManifest,
+      boolean livePresentationDelayOverridesManifest) {
-      @Nullable Object tag) {
+    this.mediaItem = mediaItem;
-    this.initialManifestUri = manifestUri;
+    this.playbackProperties = checkNotNull(mediaItem.playbackProperties);
+    this.manifestUri = playbackProperties.uri;
    this.manifest = manifest;
-    this.manifestUri = manifestUri;
    this.manifestDataSourceFactory = manifestDataSourceFactory;
    this.manifestParser = manifestParser;
    this.chunkSourceFactory = chunkSourceFactory;
@@ -620,7 +584,6 @@ public final class DashMediaSource extends BaseMediaSource {
    this.livePresentationDelayMs = livePresentationDelayMs;
    this.livePresentationDelayOverridesManifest = livePresentationDelayOverridesManifest;
    this.compositeSequenceableLoaderFactory = compositeSequenceableLoaderFactory;
-    this.tag = tag;
    sideloadedManifest = manifest != null;
    manifestEventDispatcher = createEventDispatcher(/* mediaPeriodId= */ null);
    manifestUriLock = new Object();
@@ -650,7 +613,8 @@ public final class DashMediaSource extends BaseMediaSource {
  public void replaceManifestUri(Uri manifestUri) {
    synchronized (manifestUriLock) {
      this.manifestUri = manifestUri;
-      this.initialManifestUri = manifestUri;
+      this.mediaItem = mediaItem.buildUpon().setUri(manifestUri).build();
+      this.playbackProperties = castNonNull(mediaItem.playbackProperties);
    }
  }
@@ -659,7 +623,12 @@ public final class DashMediaSource extends BaseMediaSource {
  @Override
  @Nullable
  public Object getTag() {
-    return tag;
+    return playbackProperties.tag;
+  }
+  // TODO(bachinger): add @Override annotation once the method is defined by MediaSource.
+  public MediaItem getMediaItem() {
+    return mediaItem;
  }
  @Override
@@ -724,7 +693,7 @@ public final class DashMediaSource extends BaseMediaSource {
    manifestLoadStartTimestampMs = 0;
    manifestLoadEndTimestampMs = 0;
    manifest = sideloadedManifest ? manifest : null;
-    manifestUri = initialManifestUri;
+    manifestUri = playbackProperties.uri;
    manifestFatalError = null;
    if (handler != null) {
      handler.removeCallbacksAndMessages(null);
@@ -1079,7 +1048,7 @@ public final class DashMediaSource extends BaseMediaSource {
            windowDurationUs,
            windowDefaultStartPositionUs,
            manifest,
-            tag);
+            mediaItem);
    refreshSourceInfo(timeline);
    if (!sideloadedManifest) {
@@ -1223,7 +1192,7 @@ public final class DashMediaSource extends BaseMediaSource {
    private final long windowDurationUs;
    private final long windowDefaultStartPositionUs;
    private final DashManifest manifest;
-    @Nullable private final Object windowTag;
+    private final MediaItem mediaItem;
    public DashTimeline(
        long presentationStartTimeMs,
@@ -1234,7 +1203,7 @@ public final class DashMediaSource extends BaseMediaSource {
        long windowDurationUs,
        long windowDefaultStartPositionUs,
        DashManifest manifest,
-        @Nullable Object windowTag) {
+        MediaItem mediaItem) {
      this.presentationStartTimeMs = presentationStartTimeMs;
      this.windowStartTimeMs = windowStartTimeMs;
      this.elapsedRealtimeEpochOffsetMs = elapsedRealtimeEpochOffsetMs;
@@ -1243,7 +1212,7 @@ public final class DashMediaSource extends BaseMediaSource {
      this.windowDurationUs = windowDurationUs;
      this.windowDefaultStartPositionUs = windowDefaultStartPositionUs;
      this.manifest = manifest;
-      this.windowTag = windowTag;
+      this.mediaItem = mediaItem;
    }
    @Override
@@ -1273,7 +1242,7 @@ public final class DashMediaSource extends BaseMediaSource {
          defaultPositionProjectionUs);
      return window.set(
          Window.SINGLE_WINDOW_UID,
-          windowTag,
+          mediaItem,
          manifest,
          presentationStartTimeMs,
          windowStartTimeMs,

--- a/library/dash/src/test/java/com/google/android/exoplayer2/source/dash/DashMediaSourceTest.java
+++ b/library/dash/src/test/java/com/google/android/exoplayer2/source/dash/DashMediaSourceTest.java
@@ -17,11 +17,17 @@ package com.google.android.exoplayer2.source.dash;
 import static com.google.common.truth.Truth.assertThat;
 import static org.junit.Assert.fail;
+import static org.mockito.Mockito.mock;
+import androidx.annotation.Nullable;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
+import com.google.android.exoplayer2.MediaItem;
 import com.google.android.exoplayer2.ParserException;
+import com.google.android.exoplayer2.offline.StreamKey;
+import com.google.android.exoplayer2.upstream.DataSource;
 import com.google.android.exoplayer2.upstream.ParsingLoadable;
 import com.google.android.exoplayer2.util.Util;
+import com.google.common.collect.ImmutableList;
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import org.junit.Test;
@@ -68,6 +74,108 @@ public final class DashMediaSourceTest {
    }
  }
+  // Tests backwards compatibility
+  @SuppressWarnings("deprecation")
+  @Test
+  public void factorySetTag_nullMediaItemTag_setsMediaItemTag() {
+    Object tag = new Object();
+    MediaItem mediaItem = MediaItem.fromUri("http://www.google.com");
+    DashMediaSource.Factory factory =
+        new DashMediaSource.Factory(mock(DataSource.Factory.class)).setTag(tag);
+    MediaItem dashMediaItem = factory.createMediaSource(mediaItem).getMediaItem();
+    assertThat(dashMediaItem.playbackProperties).isNotNull();
+    assertThat(dashMediaItem.playbackProperties.uri).isEqualTo(mediaItem.playbackProperties.uri);
+    assertThat(dashMediaItem.playbackProperties.tag).isEqualTo(tag);
+  }
+  // Tests backwards compatibility
+  @SuppressWarnings("deprecation")
+  @Test
+  public void factorySetTag_nonNullMediaItemTag_doesNotOverrideMediaItemTag() {
+    Object factoryTag = new Object();
+    Object mediaItemTag = new Object();
+    MediaItem mediaItem =
+        new MediaItem.Builder().setUri("http://www.google.com").setTag(mediaItemTag).build();
+    DashMediaSource.Factory factory =
+        new DashMediaSource.Factory(mock(DataSource.Factory.class)).setTag(factoryTag);
+    MediaItem dashMediaItem = factory.createMediaSource(mediaItem).getMediaItem();
+    assertThat(dashMediaItem.playbackProperties).isNotNull();
+    assertThat(dashMediaItem.playbackProperties.uri).isEqualTo(mediaItem.playbackProperties.uri);
+    assertThat(dashMediaItem.playbackProperties.tag).isEqualTo(mediaItemTag);
+  }
+  // Tests backwards compatibility
+  @SuppressWarnings("deprecation")
+  @Test
+  public void factorySetTag_setsDeprecatedMediaSourceTag() {
+    Object tag = new Object();
+    MediaItem mediaItem = MediaItem.fromUri("http://www.google.com");
+    DashMediaSource.Factory factory =
+        new DashMediaSource.Factory(mock(DataSource.Factory.class)).setTag(tag);
+    @Nullable Object mediaSourceTag = factory.createMediaSource(mediaItem).getTag();
+    assertThat(mediaSourceTag).isEqualTo(tag);
+  }
+  // Tests backwards compatibility
+  @SuppressWarnings("deprecation")
+  @Test
+  public void factoryCreateMediaSource_setsDeprecatedMediaSourceTag() {
+    Object tag = new Object();
+    MediaItem mediaItem =
+        new MediaItem.Builder().setUri("http://www.google.com").setTag(tag).build();
+    DashMediaSource.Factory factory =
+        new DashMediaSource.Factory(mock(DataSource.Factory.class)).setTag(new Object());
+    @Nullable Object mediaSourceTag = factory.createMediaSource(mediaItem).getTag();
+    assertThat(mediaSourceTag).isEqualTo(tag);
+  }
+  // Tests backwards compatibility
+  @SuppressWarnings("deprecation")
+  @Test
+  public void factorySetStreamKeys_emptyMediaItemStreamKeys_setsMediaItemStreamKeys() {
+    MediaItem mediaItem = MediaItem.fromUri("http://www.google.com");
+    StreamKey streamKey = new StreamKey(/* groupIndex= */ 0, /* trackIndex= */ 1);
+    DashMediaSource.Factory factory =
+        new DashMediaSource.Factory(mock(DataSource.Factory.class))
+            .setStreamKeys(ImmutableList.of(streamKey));
+    MediaItem dashMediaItem = factory.createMediaSource(mediaItem).getMediaItem();
+    assertThat(dashMediaItem.playbackProperties).isNotNull();
+    assertThat(dashMediaItem.playbackProperties.uri).isEqualTo(mediaItem.playbackProperties.uri);
+    assertThat(dashMediaItem.playbackProperties.streamKeys).containsExactly(streamKey);
+  }
+  // Tests backwards compatibility
+  @SuppressWarnings("deprecation")
+  @Test
+  public void factorySetStreamKeys_withMediaItemStreamKeys_doesNotsOverrideMediaItemStreamKeys() {
+    StreamKey mediaItemStreamKey = new StreamKey(/* groupIndex= */ 0, /* trackIndex= */ 1);
+    MediaItem mediaItem =
+        new MediaItem.Builder()
+            .setUri("http://www.google.com")
+            .setStreamKeys(ImmutableList.of(mediaItemStreamKey))
+            .build();
+    DashMediaSource.Factory factory =
+        new DashMediaSource.Factory(mock(DataSource.Factory.class))
+            .setStreamKeys(
+                ImmutableList.of(new StreamKey(/* groupIndex= */ 1, /* trackIndex= */ 0)));
+    MediaItem dashMediaItem = factory.createMediaSource(mediaItem).getMediaItem();
+    assertThat(dashMediaItem.playbackProperties).isNotNull();
+    assertThat(dashMediaItem.playbackProperties.uri).isEqualTo(mediaItem.playbackProperties.uri);
+    assertThat(dashMediaItem.playbackProperties.streamKeys).containsExactly(mediaItemStreamKey);
+  }
  private static void assertParseStringToLong(
      long expected, ParsingLoadable.Parser<Long> parser, String data) throws IOException {
    long actual = parser.parse(null, new ByteArrayInputStream(Util.getUtf8Bytes(data)));