Support different drm schemes in playlists in the demo app

This CL changes PlayerActivity's VIEW_LIST action intent contract:
Each media item configuration is provided by indexing the entries.
For example, the URI of the first item is passed as "uri_0", the
second one is "uri_1", etc. Optionally, the extra parameters, like
the extensions, are passed as "extension_1", where the intent extras
with matching indices, refer to the same media sample.

The VIEW action's contract remains unchanged.

PiperOrigin-RevId: 260518118

demos/main/src/main/java/com/google/android/exoplayer2/demo/PlayerActivity.java

@@ -38,6 +38,7 @@ import com.google.android.exoplayer2.PlaybackPreparer;
 import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.RenderersFactory;
 import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.demo.Sample.UriSample;
 import com.google.android.exoplayer2.drm.DefaultDrmSessionManager;
 import com.google.android.exoplayer2.drm.DrmSessionManager;
 import com.google.android.exoplayer2.drm.FrameworkMediaCrypto;
@@ -78,41 +79,48 @@ import java.lang.reflect.Constructor;
 import java.net.CookieHandler;
 import java.net.CookieManager;
 import java.net.CookiePolicy;
+import java.util.ArrayList;
 import java.util.UUID;
 
 /** An activity that plays media using {@link SimpleExoPlayer}. */
 public class PlayerActivity extends AppCompatActivity
     implements OnClickListener, PlaybackPreparer, PlayerControlView.VisibilityListener {
 
-  public static final String DRM_SCHEME_EXTRA = "drm_scheme";
+  // Activity extras.
-  public static final String DRM_LICENSE_URL_EXTRA = "drm_license_url";
-  public static final String DRM_KEY_REQUEST_PROPERTIES_EXTRA = "drm_key_request_properties";
-  public static final String DRM_MULTI_SESSION_EXTRA = "drm_multi_session";
-  public static final String PREFER_EXTENSION_DECODERS_EXTRA = "prefer_extension_decoders";
-
-  public static final String ACTION_VIEW = "com.google.android.exoplayer.demo.action.VIEW";
-  public static final String EXTENSION_EXTRA = "extension";
-
-  public static final String ACTION_VIEW_LIST =
-      "com.google.android.exoplayer.demo.action.VIEW_LIST";
-  public static final String URI_LIST_EXTRA = "uri_list";
-  public static final String EXTENSION_LIST_EXTRA = "extension_list";
-
-  public static final String AD_TAG_URI_EXTRA = "ad_tag_uri";
-
-  public static final String ABR_ALGORITHM_EXTRA = "abr_algorithm";
-  public static final String ABR_ALGORITHM_DEFAULT = "default";
-  public static final String ABR_ALGORITHM_RANDOM = "random";
 
   public static final String SPHERICAL_STEREO_MODE_EXTRA = "spherical_stereo_mode";
   public static final String SPHERICAL_STEREO_MODE_MONO = "mono";
   public static final String SPHERICAL_STEREO_MODE_TOP_BOTTOM = "top_bottom";
   public static final String SPHERICAL_STEREO_MODE_LEFT_RIGHT = "left_right";
 
+  // Actions.
+
+  public static final String ACTION_VIEW = "com.google.android.exoplayer.demo.action.VIEW";
+  public static final String ACTION_VIEW_LIST =
+      "com.google.android.exoplayer.demo.action.VIEW_LIST";
+
+  // Player configuration extras.
+
+  public static final String ABR_ALGORITHM_EXTRA = "abr_algorithm";
+  public static final String ABR_ALGORITHM_DEFAULT = "default";
+  public static final String ABR_ALGORITHM_RANDOM = "random";
+
+  // Media item configuration extras.
+
+  public static final String URI_EXTRA = "uri";
+  public static final String EXTENSION_EXTRA = "extension";
+
+  public static final String DRM_SCHEME_EXTRA = "drm_scheme";
+  public static final String DRM_LICENSE_URL_EXTRA = "drm_license_url";
+  public static final String DRM_KEY_REQUEST_PROPERTIES_EXTRA = "drm_key_request_properties";
+  public static final String DRM_MULTI_SESSION_EXTRA = "drm_multi_session";
+  public static final String PREFER_EXTENSION_DECODERS_EXTRA = "prefer_extension_decoders";
+  public static final String AD_TAG_URI_EXTRA = "ad_tag_uri";
   // For backwards compatibility only.
-  private static final String DRM_SCHEME_UUID_EXTRA = "drm_scheme_uuid";
+  public static final String DRM_SCHEME_UUID_EXTRA = "drm_scheme_uuid";
 
   // Saved instance state keys.
+
   private static final String KEY_TRACK_SELECTOR_PARAMETERS = "track_selector_parameters";
   private static final String KEY_WINDOW = "window";
   private static final String KEY_POSITION = "position";
@@ -124,6 +132,8 @@ public class PlayerActivity extends AppCompatActivity
     DEFAULT_COOKIE_MANAGER.setCookiePolicy(CookiePolicy.ACCEPT_ORIGINAL_SERVER);
   }
 
+  private final ArrayList<FrameworkMediaDrm> mediaDrms;
+
   private PlayerView playerView;
   private LinearLayout debugRootView;
   private Button selectTracksButton;
@@ -132,7 +142,6 @@ public class PlayerActivity extends AppCompatActivity
 
   private DataSource.Factory dataSourceFactory;
   private SimpleExoPlayer player;
-  private FrameworkMediaDrm mediaDrm;
   private MediaSource mediaSource;
   private DefaultTrackSelector trackSelector;
   private DefaultTrackSelector.Parameters trackSelectorParameters;
@@ -148,6 +157,10 @@ public class PlayerActivity extends AppCompatActivity
   private AdsLoader adsLoader;
   private Uri loadedAdTagUri;
 
+  public PlayerActivity() {
+    mediaDrms = new ArrayList<>();
+  }
+
   // Activity lifecycle
 
   @Override
@@ -329,69 +342,11 @@ public class PlayerActivity extends AppCompatActivity
   private void initializePlayer() {
     if (player == null) {
       Intent intent = getIntent();
-      String action = intent.getAction();
-      Uri[] uris;
-      String[] extensions;
-      if (ACTION_VIEW.equals(action)) {
-        uris = new Uri[] {intent.getData()};
-        extensions = new String[] {intent.getStringExtra(EXTENSION_EXTRA)};
-      } else if (ACTION_VIEW_LIST.equals(action)) {
-        String[] uriStrings = intent.getStringArrayExtra(URI_LIST_EXTRA);
-        uris = new Uri[uriStrings.length];
-        for (int i = 0; i < uriStrings.length; i++) {
-          uris[i] = Uri.parse(uriStrings[i]);
-        }
-        extensions = intent.getStringArrayExtra(EXTENSION_LIST_EXTRA);
-        if (extensions == null) {
-          extensions = new String[uriStrings.length];
-        }
-      } else {
-        showToast(getString(R.string.unexpected_intent_action, action));
-        finish();
-        return;
-      }
-      if (!Util.checkCleartextTrafficPermitted(uris)) {
-        showToast(R.string.error_cleartext_not_permitted);
-        return;
-      }
-      if (Util.maybeRequestReadExternalStoragePermission(/* activity= */ this, uris)) {
-        // The player will be reinitialized if the permission is granted.
-        return;
-      }
 
-      DrmSessionManager<FrameworkMediaCrypto> drmSessionManager = null;
+      releaseMediaDrms();
-      if (intent.hasExtra(DRM_SCHEME_EXTRA) || intent.hasExtra(DRM_SCHEME_UUID_EXTRA)) {
+      mediaSource = createTopLevelMediaSource(intent);
-        String drmLicenseUrl = intent.getStringExtra(DRM_LICENSE_URL_EXTRA);
+      if (mediaSource == null) {
-        String[] keyRequestPropertiesArray =
+        return;
-            intent.getStringArrayExtra(DRM_KEY_REQUEST_PROPERTIES_EXTRA);
-        boolean multiSession = intent.getBooleanExtra(DRM_MULTI_SESSION_EXTRA, false);
-        int errorStringId = R.string.error_drm_unknown;
-        if (Util.SDK_INT < 18) {
-          errorStringId = R.string.error_drm_not_supported;
-        } else {
-          try {
-            String drmSchemeExtra = intent.hasExtra(DRM_SCHEME_EXTRA) ? DRM_SCHEME_EXTRA
-                : DRM_SCHEME_UUID_EXTRA;
-            UUID drmSchemeUuid = Util.getDrmUuid(intent.getStringExtra(drmSchemeExtra));
-            if (drmSchemeUuid == null) {
-              errorStringId = R.string.error_drm_unsupported_scheme;
-            } else {
-              drmSessionManager =
-                  buildDrmSessionManagerV18(
-                      drmSchemeUuid, drmLicenseUrl, keyRequestPropertiesArray, multiSession);
-            }
-          } catch (UnsupportedDrmException e) {
-            errorStringId = e.reason == UnsupportedDrmException.REASON_UNSUPPORTED_SCHEME
-                ? R.string.error_drm_unsupported_scheme : R.string.error_drm_unknown;
-          }
-        }
-        if (drmSessionManager == null) {
-          showToast(errorStringId);
-          finish();
-          return;
-        }
-      } else {
-        drmSessionManager = DrmSessionManager.getDummyDrmSessionManager();
       }
 
       TrackSelection.Factory trackSelectionFactory;
@@ -424,28 +379,8 @@ public class PlayerActivity extends AppCompatActivity
       playerView.setPlaybackPreparer(this);
       debugViewHelper = new DebugTextViewHelper(player, debugTextView);
       debugViewHelper.start();
-
+      if (adsLoader != null) {
-      MediaSource[] mediaSources = new MediaSource[uris.length];
+        adsLoader.setPlayer(player);
-      for (int i = 0; i < uris.length; i++) {
-        mediaSources[i] = buildMediaSource(uris[i], extensions[i], drmSessionManager);
-      }
-      mediaSource =
-          mediaSources.length == 1 ? mediaSources[0] : new ConcatenatingMediaSource(mediaSources);
-      String adTagUriString = intent.getStringExtra(AD_TAG_URI_EXTRA);
-      if (adTagUriString != null) {
-        Uri adTagUri = Uri.parse(adTagUriString);
-        if (!adTagUri.equals(loadedAdTagUri)) {
-          releaseAdsLoader();
-          loadedAdTagUri = adTagUri;
-        }
-        MediaSource adsMediaSource = createAdsMediaSource(mediaSource, Uri.parse(adTagUriString));
-        if (adsMediaSource != null) {
-          mediaSource = adsMediaSource;
-        } else {
-          showToast(R.string.ima_not_loaded);
-        }
-      } else {
-        releaseAdsLoader();
       }
     }
     boolean haveStartPosition = startWindow != C.INDEX_UNSET;
@@ -456,23 +391,113 @@ public class PlayerActivity extends AppCompatActivity
     updateButtonVisibility();
   }
 
-  private MediaSource buildMediaSource(Uri uri) {
+  @Nullable
-    return buildMediaSource(
+  private MediaSource createTopLevelMediaSource(Intent intent) {
-        uri,
+    String action = intent.getAction();
-        /* overrideExtension= */ null,
+    boolean actionIsListView = ACTION_VIEW_LIST.equals(action);
-        /* drmSessionManager= */ DrmSessionManager.getDummyDrmSessionManager());
+    if (!actionIsListView && !ACTION_VIEW.equals(action)) {
+      showToast(getString(R.string.unexpected_intent_action, action));
+      finish();
+      return null;
+    }
+
+    Sample intentAsSample = Sample.createFromIntent(intent);
+    UriSample[] samples =
+        intentAsSample instanceof Sample.PlaylistSample
+            ? ((Sample.PlaylistSample) intentAsSample).children
+            : new UriSample[] {(UriSample) intentAsSample};
+
+    boolean seenAdsTagUri = false;
+    for (UriSample sample : samples) {
+      seenAdsTagUri |= sample.adTagUri != null;
+      if (!Util.checkCleartextTrafficPermitted(sample.uri)) {
+        showToast(R.string.error_cleartext_not_permitted);
+        return null;
+      }
+      if (Util.maybeRequestReadExternalStoragePermission(/* activity= */ this, sample.uri)) {
+        // The player will be reinitialized if the permission is granted.
+        return null;
+      }
+    }
+
+    MediaSource[] mediaSources = new MediaSource[samples.length];
+    for (int i = 0; i < samples.length; i++) {
+      mediaSources[i] = createLeafMediaSource(samples[i]);
+    }
+    MediaSource mediaSource =
+        mediaSources.length == 1 ? mediaSources[0] : new ConcatenatingMediaSource(mediaSources);
+
+    if (seenAdsTagUri) {
+      Uri adTagUri = samples[0].adTagUri;
+      if (actionIsListView) {
+        showToast(R.string.unsupported_ads_in_concatenation);
+      } else {
+        if (!adTagUri.equals(loadedAdTagUri)) {
+          releaseAdsLoader();
+          loadedAdTagUri = adTagUri;
+        }
+        MediaSource adsMediaSource = createAdsMediaSource(mediaSource, adTagUri);
+        if (adsMediaSource != null) {
+          mediaSource = adsMediaSource;
+        } else {
+          showToast(R.string.ima_not_loaded);
+        }
+      }
+    } else {
+      releaseAdsLoader();
+    }
+
+    return mediaSource;
   }
 
-  private MediaSource buildMediaSource(
+  private MediaSource createLeafMediaSource(UriSample parameters) {
-      Uri uri,
+    DrmSessionManager<FrameworkMediaCrypto> drmSessionManager = null;
-      @Nullable String overrideExtension,
+    Sample.DrmInfo drmInfo = parameters.drmInfo;
-      DrmSessionManager<FrameworkMediaCrypto> drmSessionManager) {
+    if (drmInfo != null) {
+      int errorStringId = R.string.error_drm_unknown;
+      if (Util.SDK_INT < 18) {
+        errorStringId = R.string.error_drm_not_supported;
+      } else {
+        try {
+          if (drmInfo.drmScheme == null) {
+            errorStringId = R.string.error_drm_unsupported_scheme;
+          } else {
+            drmSessionManager =
+                buildDrmSessionManagerV18(
+                    drmInfo.drmScheme,
+                    drmInfo.drmLicenseUrl,
+                    drmInfo.drmKeyRequestProperties,
+                    drmInfo.drmMultiSession);
+          }
+        } catch (UnsupportedDrmException e) {
+          errorStringId =
+              e.reason == UnsupportedDrmException.REASON_UNSUPPORTED_SCHEME
+                  ? R.string.error_drm_unsupported_scheme
+                  : R.string.error_drm_unknown;
+        }
+      }
+      if (drmSessionManager == null) {
+        showToast(errorStringId);
+        finish();
+        return null;
+      }
+    } else {
+      drmSessionManager = DrmSessionManager.getDummyDrmSessionManager();
+    }
+
     DownloadRequest downloadRequest =
-        ((DemoApplication) getApplication()).getDownloadTracker().getDownloadRequest(uri);
+        ((DemoApplication) getApplication())
+            .getDownloadTracker()
+            .getDownloadRequest(parameters.uri);
     if (downloadRequest != null) {
       return DownloadHelper.createMediaSource(downloadRequest, dataSourceFactory);
     }
-    @ContentType int type = Util.inferContentType(uri, overrideExtension);
+    return createLeafMediaSource(parameters.uri, parameters.extension, drmSessionManager);
+  }
+
+  private MediaSource createLeafMediaSource(
+      Uri uri, String extension, DrmSessionManager<FrameworkMediaCrypto> drmSessionManager) {
+    @ContentType int type = Util.inferContentType(uri, extension);
     switch (type) {
       case C.TYPE_DASH:
         return new DashMediaSource.Factory(dataSourceFactory)
@@ -508,8 +533,9 @@ public class PlayerActivity extends AppCompatActivity
             keyRequestPropertiesArray[i + 1]);
       }
     }
-    releaseMediaDrm();
+
-    mediaDrm = FrameworkMediaDrm.newInstance(uuid);
+    FrameworkMediaDrm mediaDrm = FrameworkMediaDrm.newInstance(uuid);
+    mediaDrms.add(mediaDrm);
     return new DefaultDrmSessionManager<>(uuid, mediaDrm, drmCallback, null, multiSession);
   }
 
@@ -527,14 +553,14 @@ public class PlayerActivity extends AppCompatActivity
     if (adsLoader != null) {
       adsLoader.setPlayer(null);
     }
-    releaseMediaDrm();
+    releaseMediaDrms();
   }
 
-  private void releaseMediaDrm() {
+  private void releaseMediaDrms() {
-    if (mediaDrm != null) {
+    for (FrameworkMediaDrm mediaDrm : mediaDrms) {
       mediaDrm.release();
-      mediaDrm = null;
     }
+    mediaDrms.clear();
   }
 
   private void releaseAdsLoader() {
@@ -588,12 +614,12 @@ public class PlayerActivity extends AppCompatActivity
         // LINT.ThenChange(../../../../../../../../proguard-rules.txt)
         adsLoader = loaderConstructor.newInstance(this, adTagUri);
       }
-      adsLoader.setPlayer(player);
       MediaSourceFactory adMediaSourceFactory =
           new MediaSourceFactory() {
             @Override
             public MediaSource createMediaSource(Uri uri) {
-              return PlayerActivity.this.buildMediaSource(uri);
+              return PlayerActivity.this.createLeafMediaSource(
+                  uri, /* extension=*/ null, DrmSessionManager.getDummyDrmSessionManager());
             }
 
             @Override
@@ -718,5 +744,4 @@ public class PlayerActivity extends AppCompatActivity
       return Pair.create(0, errorString);
     }
   }
-
 }

demos/main/src/main/java/com/google/android/exoplayer2/demo/Sample.java

@@ -0,0 +1,187 @@
+/*
+ * 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.demo;
+
+import static com.google.android.exoplayer2.demo.PlayerActivity.ACTION_VIEW_LIST;
+import static com.google.android.exoplayer2.demo.PlayerActivity.AD_TAG_URI_EXTRA;
+import static com.google.android.exoplayer2.demo.PlayerActivity.DRM_KEY_REQUEST_PROPERTIES_EXTRA;
+import static com.google.android.exoplayer2.demo.PlayerActivity.DRM_LICENSE_URL_EXTRA;
+import static com.google.android.exoplayer2.demo.PlayerActivity.DRM_MULTI_SESSION_EXTRA;
+import static com.google.android.exoplayer2.demo.PlayerActivity.DRM_SCHEME_EXTRA;
+import static com.google.android.exoplayer2.demo.PlayerActivity.DRM_SCHEME_UUID_EXTRA;
+import static com.google.android.exoplayer2.demo.PlayerActivity.EXTENSION_EXTRA;
+import static com.google.android.exoplayer2.demo.PlayerActivity.URI_EXTRA;
+
+import android.content.Intent;
+import android.net.Uri;
+import androidx.annotation.Nullable;
+import com.google.android.exoplayer2.util.Assertions;
+import com.google.android.exoplayer2.util.Util;
+import java.util.ArrayList;
+import java.util.UUID;
+
+/* package */ abstract class Sample {
+
+  public static final class UriSample extends Sample {
+
+    public static UriSample createFromIntent(Uri uri, Intent intent, String extrasKeySuffix) {
+      String extension = intent.getStringExtra(EXTENSION_EXTRA + extrasKeySuffix);
+      String adsTagUriString = intent.getStringExtra(AD_TAG_URI_EXTRA + extrasKeySuffix);
+      Uri adTagUri = adsTagUriString != null ? Uri.parse(adsTagUriString) : null;
+      return new UriSample(
+          /* name= */ null,
+          DrmInfo.createFromIntent(intent, extrasKeySuffix),
+          uri,
+          extension,
+          adTagUri,
+          /* sphericalStereoMode= */ null);
+    }
+
+    public final Uri uri;
+    public final String extension;
+    public final DrmInfo drmInfo;
+    public final Uri adTagUri;
+    public final String sphericalStereoMode;
+
+    public UriSample(
+        String name,
+        DrmInfo drmInfo,
+        Uri uri,
+        String extension,
+        Uri adTagUri,
+        String sphericalStereoMode) {
+      super(name);
+      this.uri = uri;
+      this.extension = extension;
+      this.drmInfo = drmInfo;
+      this.adTagUri = adTagUri;
+      this.sphericalStereoMode = sphericalStereoMode;
+    }
+
+    @Override
+    public void addToIntent(Intent intent) {
+      intent.setAction(PlayerActivity.ACTION_VIEW).setData(uri);
+      intent.putExtra(PlayerActivity.SPHERICAL_STEREO_MODE_EXTRA, sphericalStereoMode);
+      addPlayerConfigToIntent(intent, /* extrasKeySuffix= */ "");
+    }
+
+    public void addToPlaylistIntent(Intent intent, String extrasKeySuffix) {
+      intent.putExtra(PlayerActivity.URI_EXTRA + extrasKeySuffix, uri.toString());
+      addPlayerConfigToIntent(intent, extrasKeySuffix);
+    }
+
+    private void addPlayerConfigToIntent(Intent intent, String extrasKeySuffix) {
+      intent
+          .putExtra(EXTENSION_EXTRA + extrasKeySuffix, extension)
+          .putExtra(
+              AD_TAG_URI_EXTRA + extrasKeySuffix, adTagUri != null ? adTagUri.toString() : null);
+      if (drmInfo != null) {
+        drmInfo.addToIntent(intent, extrasKeySuffix);
+      }
+    }
+  }
+
+  public static final class PlaylistSample extends Sample {
+
+    public final UriSample[] children;
+
+    public PlaylistSample(String name, UriSample... children) {
+      super(name);
+      this.children = children;
+    }
+
+    @Override
+    public void addToIntent(Intent intent) {
+      intent.setAction(PlayerActivity.ACTION_VIEW_LIST);
+      for (int i = 0; i < children.length; i++) {
+        children[i].addToPlaylistIntent(intent, /* extrasKeySuffix= */ "_" + i);
+      }
+    }
+  }
+
+  public static final class DrmInfo {
+
+    public static DrmInfo createFromIntent(Intent intent, String extrasKeySuffix) {
+      String schemeKey = DRM_SCHEME_EXTRA + extrasKeySuffix;
+      String schemeUuidKey = DRM_SCHEME_UUID_EXTRA + extrasKeySuffix;
+      if (!intent.hasExtra(schemeKey) && !intent.hasExtra(schemeUuidKey)) {
+        return null;
+      }
+      String drmSchemeExtra =
+          intent.hasExtra(schemeKey)
+              ? intent.getStringExtra(schemeKey)
+              : intent.getStringExtra(schemeUuidKey);
+      UUID drmScheme = Util.getDrmUuid(drmSchemeExtra);
+      String drmLicenseUrl = intent.getStringExtra(DRM_LICENSE_URL_EXTRA + extrasKeySuffix);
+      String[] keyRequestPropertiesArray =
+          intent.getStringArrayExtra(DRM_KEY_REQUEST_PROPERTIES_EXTRA + extrasKeySuffix);
+      boolean drmMultiSession =
+          intent.getBooleanExtra(DRM_MULTI_SESSION_EXTRA + extrasKeySuffix, false);
+      return new DrmInfo(drmScheme, drmLicenseUrl, keyRequestPropertiesArray, drmMultiSession);
+    }
+
+    public final UUID drmScheme;
+    public final String drmLicenseUrl;
+    public final String[] drmKeyRequestProperties;
+    public final boolean drmMultiSession;
+
+    public DrmInfo(
+        UUID drmScheme,
+        String drmLicenseUrl,
+        String[] drmKeyRequestProperties,
+        boolean drmMultiSession) {
+      this.drmScheme = drmScheme;
+      this.drmLicenseUrl = drmLicenseUrl;
+      this.drmKeyRequestProperties = drmKeyRequestProperties;
+      this.drmMultiSession = drmMultiSession;
+    }
+
+    public void addToIntent(Intent intent, String extrasKeySuffix) {
+      Assertions.checkNotNull(intent);
+      intent.putExtra(DRM_SCHEME_EXTRA + extrasKeySuffix, drmScheme.toString());
+      intent.putExtra(DRM_LICENSE_URL_EXTRA + extrasKeySuffix, drmLicenseUrl);
+      intent.putExtra(DRM_KEY_REQUEST_PROPERTIES_EXTRA + extrasKeySuffix, drmKeyRequestProperties);
+      intent.putExtra(DRM_MULTI_SESSION_EXTRA + extrasKeySuffix, drmMultiSession);
+    }
+  }
+
+  public static Sample createFromIntent(Intent intent) {
+    if (ACTION_VIEW_LIST.equals(intent.getAction())) {
+      ArrayList<String> intentUris = new ArrayList<>();
+      int index = 0;
+      while (intent.hasExtra(URI_EXTRA + "_" + index)) {
+        intentUris.add(intent.getStringExtra(URI_EXTRA + "_" + index));
+        index++;
+      }
+      UriSample[] children = new UriSample[intentUris.size()];
+      for (int i = 0; i < children.length; i++) {
+        Uri uri = Uri.parse(intentUris.get(i));
+        children[i] = UriSample.createFromIntent(uri, intent, /* extrasKeySuffix= */ "_" + i);
+      }
+      return new PlaylistSample(/* name= */ null, children);
+    } else {
+      return UriSample.createFromIntent(intent.getData(), intent, /* extrasKeySuffix= */ "");
+    }
+  }
+
+  @Nullable public final String name;
+
+  public Sample(String name) {
+    this.name = name;
+  }
+
+  public abstract void addToIntent(Intent intent);
+}

demos/main/src/main/java/com/google/android/exoplayer2/demo/SampleChooserActivity.java

@@ -38,6 +38,9 @@ import android.widget.TextView;
 import android.widget.Toast;
 import com.google.android.exoplayer2.ParserException;
 import com.google.android.exoplayer2.RenderersFactory;
+import com.google.android.exoplayer2.demo.Sample.DrmInfo;
+import com.google.android.exoplayer2.demo.Sample.PlaylistSample;
+import com.google.android.exoplayer2.demo.Sample.UriSample;
 import com.google.android.exoplayer2.offline.DownloadService;
 import com.google.android.exoplayer2.upstream.DataSource;
 import com.google.android.exoplayer2.upstream.DataSourceInputStream;
@@ -161,13 +164,17 @@ public class SampleChooserActivity extends AppCompatActivity
   public boolean onChildClick(
       ExpandableListView parent, View view, int groupPosition, int childPosition, long id) {
     Sample sample = (Sample) view.getTag();
-    startActivity(
+    Intent intent = new Intent(this, PlayerActivity.class);
-        sample.buildIntent(
+    intent.putExtra(
-            /* context= */ this,
+        PlayerActivity.PREFER_EXTENSION_DECODERS_EXTRA,
-            isNonNullAndChecked(preferExtensionDecodersMenuItem),
+        isNonNullAndChecked(preferExtensionDecodersMenuItem));
-            isNonNullAndChecked(randomAbrMenuItem)
+    String abrAlgorithm =
-                ? PlayerActivity.ABR_ALGORITHM_RANDOM
+        isNonNullAndChecked(randomAbrMenuItem)
-                : PlayerActivity.ABR_ALGORITHM_DEFAULT));
+            ? PlayerActivity.ABR_ALGORITHM_RANDOM
+            : PlayerActivity.ABR_ALGORITHM_DEFAULT;
+    intent.putExtra(PlayerActivity.ABR_ALGORITHM_EXTRA, abrAlgorithm);
+    sample.addToIntent(intent);
+    startActivity(intent);
     return true;
   }
 
@@ -309,17 +316,12 @@ public class SampleChooserActivity extends AppCompatActivity
             extension = reader.nextString();
             break;
           case "drm_scheme":
-            Assertions.checkState(!insidePlaylist, "Invalid attribute on nested item: drm_scheme");
             drmScheme = reader.nextString();
             break;
           case "drm_license_url":
-            Assertions.checkState(!insidePlaylist,
-                "Invalid attribute on nested item: drm_license_url");
             drmLicenseUrl = reader.nextString();
             break;
           case "drm_key_request_properties":
-            Assertions.checkState(!insidePlaylist,
-                "Invalid attribute on nested item: drm_key_request_properties");
             ArrayList<String> drmKeyRequestPropertiesList = new ArrayList<>();
             reader.beginObject();
             while (reader.hasNext()) {
@@ -357,17 +359,21 @@ public class SampleChooserActivity extends AppCompatActivity
       DrmInfo drmInfo =
           drmScheme == null
               ? null
-              : new DrmInfo(drmScheme, drmLicenseUrl, drmKeyRequestProperties, drmMultiSession);
+              : new DrmInfo(
+                  Util.getDrmUuid(drmScheme),
+                  drmLicenseUrl,
+                  drmKeyRequestProperties,
+                  drmMultiSession);
       if (playlistSamples != null) {
         UriSample[] playlistSamplesArray = playlistSamples.toArray(new UriSample[0]);
-        return new PlaylistSample(sampleName, drmInfo, playlistSamplesArray);
+        return new PlaylistSample(sampleName, playlistSamplesArray);
       } else {
         return new UriSample(
             sampleName,
             drmInfo,
             uri,
             extension,
-            adTagUri,
+            adTagUri != null ? Uri.parse(adTagUri) : null,
             sphericalStereoMode);
       }
     }
@@ -497,116 +503,4 @@ public class SampleChooserActivity extends AppCompatActivity
     }
 
   }
-
-  private static final class DrmInfo {
-    public final String drmScheme;
-    public final String drmLicenseUrl;
-    public final String[] drmKeyRequestProperties;
-    public final boolean drmMultiSession;
-
-    public DrmInfo(
-        String drmScheme,
-        String drmLicenseUrl,
-        String[] drmKeyRequestProperties,
-        boolean drmMultiSession) {
-      this.drmScheme = drmScheme;
-      this.drmLicenseUrl = drmLicenseUrl;
-      this.drmKeyRequestProperties = drmKeyRequestProperties;
-      this.drmMultiSession = drmMultiSession;
-    }
-
-    public void updateIntent(Intent intent) {
-      Assertions.checkNotNull(intent);
-      intent.putExtra(PlayerActivity.DRM_SCHEME_EXTRA, drmScheme);
-      intent.putExtra(PlayerActivity.DRM_LICENSE_URL_EXTRA, drmLicenseUrl);
-      intent.putExtra(PlayerActivity.DRM_KEY_REQUEST_PROPERTIES_EXTRA, drmKeyRequestProperties);
-      intent.putExtra(PlayerActivity.DRM_MULTI_SESSION_EXTRA, drmMultiSession);
-    }
-  }
-
-  private abstract static class Sample {
-    public final String name;
-    public final DrmInfo drmInfo;
-
-    public Sample(String name, DrmInfo drmInfo) {
-      this.name = name;
-      this.drmInfo = drmInfo;
-    }
-
-    public Intent buildIntent(
-        Context context, boolean preferExtensionDecoders, String abrAlgorithm) {
-      Intent intent = new Intent(context, PlayerActivity.class);
-      intent.putExtra(PlayerActivity.PREFER_EXTENSION_DECODERS_EXTRA, preferExtensionDecoders);
-      intent.putExtra(PlayerActivity.ABR_ALGORITHM_EXTRA, abrAlgorithm);
-      if (drmInfo != null) {
-        drmInfo.updateIntent(intent);
-      }
-      return intent;
-    }
-
-  }
-
-  private static final class UriSample extends Sample {
-
-    public final Uri uri;
-    public final String extension;
-    public final String adTagUri;
-    public final String sphericalStereoMode;
-
-    public UriSample(
-        String name,
-        DrmInfo drmInfo,
-        Uri uri,
-        String extension,
-        String adTagUri,
-        String sphericalStereoMode) {
-      super(name, drmInfo);
-      this.uri = uri;
-      this.extension = extension;
-      this.adTagUri = adTagUri;
-      this.sphericalStereoMode = sphericalStereoMode;
-    }
-
-    @Override
-    public Intent buildIntent(
-        Context context, boolean preferExtensionDecoders, String abrAlgorithm) {
-      return super.buildIntent(context, preferExtensionDecoders, abrAlgorithm)
-          .setData(uri)
-          .putExtra(PlayerActivity.EXTENSION_EXTRA, extension)
-          .putExtra(PlayerActivity.AD_TAG_URI_EXTRA, adTagUri)
-          .putExtra(PlayerActivity.SPHERICAL_STEREO_MODE_EXTRA, sphericalStereoMode)
-          .setAction(PlayerActivity.ACTION_VIEW);
-    }
-
-  }
-
-  private static final class PlaylistSample extends Sample {
-
-    public final UriSample[] children;
-
-    public PlaylistSample(
-        String name,
-        DrmInfo drmInfo,
-        UriSample... children) {
-      super(name, drmInfo);
-      this.children = children;
-    }
-
-    @Override
-    public Intent buildIntent(
-        Context context, boolean preferExtensionDecoders, String abrAlgorithm) {
-      String[] uris = new String[children.length];
-      String[] extensions = new String[children.length];
-      for (int i = 0; i < children.length; i++) {
-        uris[i] = children[i].uri.toString();
-        extensions[i] = children[i].extension;
-      }
-      return super.buildIntent(context, preferExtensionDecoders, abrAlgorithm)
-          .putExtra(PlayerActivity.URI_LIST_EXTRA, uris)
-          .putExtra(PlayerActivity.EXTENSION_LIST_EXTRA, extensions)
-          .setAction(PlayerActivity.ACTION_VIEW_LIST);
-    }
-
-  }
-
 }

demos/main/src/main/res/values/strings.xml

@@ -53,6 +53,8 @@
 
   <string name="ima_not_loaded">Playing sample without ads, as the IMA extension was not loaded</string>
 
+  <string name="unsupported_ads_in_concatenation">Playing sample without ads, as ads are not supported in concatenations</string>
+
   <string name="download_start_error">Failed to start download</string>
 
   <string name="download_playlist_unsupported">This demo app does not support downloading playlists</string>