Allow setting supported formats on AdsLoaders

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=177175377

demos/cast/src/main/java/com/google/android/exoplayer2/castdemo/DemoUtil.java

@@ -26,9 +26,9 @@ import java.util.List;
  */
 /* package */ final class DemoUtil {
 
-  public static final String MIME_TYPE_DASH = "application/dash+xml";
+  public static final String MIME_TYPE_DASH = MimeTypes.APPLICATION_MPD;
-  public static final String MIME_TYPE_HLS = "application/vnd.apple.mpegurl";
+  public static final String MIME_TYPE_HLS = MimeTypes.APPLICATION_M3U8;
-  public static final String MIME_TYPE_SS = "application/vnd.ms-sstr+xml";
+  public static final String MIME_TYPE_SS = MimeTypes.APPLICATION_SS;
   public static final String MIME_TYPE_VIDEO_MP4 = MimeTypes.VIDEO_MP4;
 
   /**

extensions/ima/src/main/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoader.java

@@ -49,10 +49,13 @@ import com.google.android.exoplayer2.Timeline;
 import com.google.android.exoplayer2.source.ads.AdPlaybackState;
 import com.google.android.exoplayer2.source.ads.AdsLoader;
 import com.google.android.exoplayer2.util.Assertions;
+import com.google.android.exoplayer2.util.MimeTypes;
 import java.io.IOException;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 
@@ -117,6 +120,7 @@ public final class ImaAdsLoader extends Player.DefaultEventListener implements A
   private final AdDisplayContainer adDisplayContainer;
   private final com.google.ads.interactivemedia.v3.api.AdsLoader adsLoader;
 
+  private List<String> supportedMimeTypes;
   private EventListener eventListener;
   private Player player;
   private ViewGroup adUiViewGroup;
@@ -238,6 +242,25 @@ public final class ImaAdsLoader extends Player.DefaultEventListener implements A
 
   // AdsLoader implementation.
 
+  @Override
+  public void setSupportedContentTypes(@C.ContentType int... contentTypes) {
+    List<String> supportedMimeTypes = new ArrayList<>();
+    for (@C.ContentType int contentType : contentTypes) {
+      if (contentType == C.TYPE_DASH) {
+        supportedMimeTypes.add(MimeTypes.APPLICATION_MPD);
+      } else if (contentType == C.TYPE_HLS) {
+        supportedMimeTypes.add(MimeTypes.APPLICATION_M3U8);
+      } else if (contentType == C.TYPE_OTHER) {
+        supportedMimeTypes.addAll(Arrays.asList(
+            MimeTypes.VIDEO_MP4, MimeTypes.VIDEO_WEBM, MimeTypes.VIDEO_H263, MimeTypes.VIDEO_MPEG,
+            MimeTypes.AUDIO_MP4, MimeTypes.AUDIO_MPEG));
+      } else if (contentType == C.TYPE_SS) {
+        // IMA does not support SmoothStreaming ad media.
+      }
+    }
+    this.supportedMimeTypes = Collections.unmodifiableList(supportedMimeTypes);
+  }
+
   @Override
   public void attachPlayer(ExoPlayer player, EventListener eventListener, ViewGroup adUiViewGroup) {
     this.player = player;
@@ -296,6 +319,7 @@ public final class ImaAdsLoader extends Player.DefaultEventListener implements A
       ImaSdkFactory imaSdkFactory = ImaSdkFactory.getInstance();
       AdsRenderingSettings adsRenderingSettings = imaSdkFactory.createAdsRenderingSettings();
       adsRenderingSettings.setEnablePreloading(true);
+      adsRenderingSettings.setMimeTypes(supportedMimeTypes);
       adsManager.init(adsRenderingSettings);
       if (DEBUG) {
         Log.d(TAG, "Initialized with preloading");

library/core/src/main/java/com/google/android/exoplayer2/source/ads/AdsLoader.java

@@ -16,6 +16,7 @@
 package com.google.android.exoplayer2.source.ads;
 
 import android.view.ViewGroup;
+import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.ExoPlayer;
 import java.io.IOException;
 
@@ -71,6 +72,15 @@ public interface AdsLoader {
 
   }
 
+  /**
+   * Sets the supported content types for ad media. Must be called before the first call to
+   * {@link #attachPlayer(ExoPlayer, EventListener, ViewGroup)}. Subsequent calls may be ignored.
+   *
+   * @param contentTypes The supported content types for ad media. Each element must be one of
+   *     {@link C#TYPE_DASH}, {@link C#TYPE_HLS}, {@link C#TYPE_SS} and {@link C#TYPE_OTHER}.
+   */
+  void setSupportedContentTypes(@C.ContentType int... contentTypes);
+
   /**
    * Attaches a player that will play ads loaded using this instance. Called on the main thread by
    * {@link AdsMediaSource}.

library/core/src/main/java/com/google/android/exoplayer2/source/ads/AdsMediaSource.java

@@ -132,6 +132,7 @@ public final class AdsMediaSource implements MediaSource {
     period = new Timeline.Period();
     adGroupMediaSources = new MediaSource[0][];
     adDurationsUs = new long[0][];
+    adsLoader.setSupportedContentTypes(C.TYPE_OTHER);
   }
 
   @Override

library/core/src/main/java/com/google/android/exoplayer2/util/MimeTypes.java

@@ -36,6 +36,7 @@ public final class MimeTypes {
   public static final String VIDEO_VP8 = BASE_TYPE_VIDEO + "/x-vnd.on2.vp8";
   public static final String VIDEO_VP9 = BASE_TYPE_VIDEO + "/x-vnd.on2.vp9";
   public static final String VIDEO_MP4V = BASE_TYPE_VIDEO + "/mp4v-es";
+  public static final String VIDEO_MPEG = BASE_TYPE_VIDEO + "/mpeg";
   public static final String VIDEO_MPEG2 = BASE_TYPE_VIDEO + "/mpeg2";
   public static final String VIDEO_VC1 = BASE_TYPE_VIDEO + "/wvc1";
   public static final String VIDEO_UNKNOWN = BASE_TYPE_VIDEO + "/x-unknown";
@@ -70,7 +71,9 @@ public final class MimeTypes {
 
   public static final String APPLICATION_MP4 = BASE_TYPE_APPLICATION + "/mp4";
   public static final String APPLICATION_WEBM = BASE_TYPE_APPLICATION + "/webm";
+  public static final String APPLICATION_MPD = BASE_TYPE_APPLICATION + "/dash+xml";
   public static final String APPLICATION_M3U8 = BASE_TYPE_APPLICATION + "/x-mpegURL";
+  public static final String APPLICATION_SS = BASE_TYPE_APPLICATION + "/vnd.ms-sstr+xml";
   public static final String APPLICATION_ID3 = BASE_TYPE_APPLICATION + "/id3";
   public static final String APPLICATION_CEA608 = BASE_TYPE_APPLICATION + "/cea-608";
   public static final String APPLICATION_CEA708 = BASE_TYPE_APPLICATION + "/cea-708";

library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaSource.java

@@ -905,8 +905,7 @@ public final class DashMediaSource implements MediaSource {
 
   }
 
-  private final class ManifestCallback implements
+  private final class ManifestCallback implements Loader.Callback<ParsingLoadable<DashManifest>> {
-      Loader.Callback<ParsingLoadable<DashManifest>> {
 
     @Override
     public void onLoadCompleted(ParsingLoadable<DashManifest> loadable,