Redefine the SSAI URI format with an "ssai" scheme instead of "imadai"

This allows us to remove the IMA naming from DefaultMediaSourceFactory's
SSAI integration.

#minor-release

PiperOrigin-RevId: 426346456

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

@@ -246,7 +246,7 @@ import java.util.Map;
     }
   }
 
-  private static final String SCHEME = "imadai";
+  private static final String IMA_AUTHORITY = "dai.google.com";
   private static final String ADS_ID = "adsId";
   private static final String ASSET_KEY = "assetKey";
   private static final String API_KEY = "apiKey";
@@ -341,7 +341,8 @@ import java.util.Map;
   /** Returns a corresponding {@link Uri}. */
   public Uri toUri() {
     Uri.Builder dataUriBuilder = new Uri.Builder();
-    dataUriBuilder.scheme(SCHEME);
+    dataUriBuilder.scheme(C.SSAI_SCHEME);
+    dataUriBuilder.authority(IMA_AUTHORITY);
     dataUriBuilder.appendQueryParameter(ADS_ID, adsId);
     if (loadVideoTimeoutMs != DEFAULT_LOAD_VIDEO_TIMEOUT_MS) {
       dataUriBuilder.appendQueryParameter(
@@ -433,8 +434,8 @@ import java.util.Map;
   public static ServerSideAdInsertionStreamRequest fromUri(Uri uri) {
     ServerSideAdInsertionStreamRequest.Builder request =
         new ServerSideAdInsertionStreamRequest.Builder();
-    if (!SCHEME.equals(uri.getScheme())) {
-      throw new IllegalArgumentException("Invalid scheme.");
+    if (!C.SSAI_SCHEME.equals(uri.getScheme()) || !IMA_AUTHORITY.equals(uri.getAuthority())) {
+      throw new IllegalArgumentException("Invalid URI scheme or authority.");
     }
     request.setAdsId(checkNotNull(uri.getQueryParameter(ADS_ID)));
     request.setAssetKey(uri.getQueryParameter(ASSET_KEY));

library/common/src/main/java/com/google/android/exoplayer2/C.java

@@ -29,6 +29,7 @@ import android.media.AudioManager;
 import android.media.MediaCodec;
 import android.media.MediaCrypto;
 import android.media.MediaFormat;
+import android.net.Uri;
 import android.view.Surface;
 import androidx.annotation.IntDef;
 import androidx.annotation.RequiresApi;
@@ -125,6 +126,9 @@ public final class C {
   /** The name of the sans-serif font family. */
   public static final String SANS_SERIF_NAME = "sans-serif";
 
+  /** The {@link Uri#getScheme() URI scheme} used for content with server side ad insertion. */
+  public static final String SSAI_SCHEME = "ssai";
+
   /**
    * Types of crypto implementation. May be one of {@link #CRYPTO_TYPE_NONE}, {@link
    * #CRYPTO_TYPE_UNSUPPORTED} or {@link #CRYPTO_TYPE_FRAMEWORK}. May also be an app-defined value

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

@@ -20,6 +20,7 @@ import static com.google.android.exoplayer2.util.Assertions.checkStateNotNull;
 import static com.google.android.exoplayer2.util.Util.castNonNull;
 
 import android.content.Context;
+import android.net.Uri;
 import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Format;
@@ -104,7 +105,7 @@ public final class DefaultMediaSourceFactory implements MediaSourceFactory {
   private final DataSource.Factory dataSourceFactory;
   private final DelegateFactoryLoader delegateFactoryLoader;
 
-  @Nullable private MediaSource.Factory imaServerSideAdInsertionMediaSourceFactory;
+  @Nullable private MediaSource.Factory serverSideAdInsertionMediaSourceFactory;
   @Nullable private AdsLoader.Provider adsLoaderProvider;
   @Nullable private AdViewProvider adViewProvider;
   @Nullable private LoadErrorHandlingPolicy loadErrorHandlingPolicy;
@@ -206,21 +207,18 @@ public final class DefaultMediaSourceFactory implements MediaSourceFactory {
   }
 
   /**
-   * Sets the {@link MediaSource.Factory} used to handle {@link MediaItem} instances containing <a
-   * href="https://support.google.com/admanager/answer/6147120">IMA Dynamic Ad Insertion URIs</a>.
+   * Sets the {@link MediaSource.Factory} used to handle {@link MediaItem} instances containing a
+   * {@link Uri} identified as resolving to content with server side ad insertion (SSAI).
    *
-   * <p>In most cases this will be an {@code ImaServerSideAdInsertionMediaSource.Factory} from the
-   * IMA extension.
+   * <p>SSAI URIs are those with a {@link Uri#getScheme() scheme} of {@link C#SSAI_SCHEME}.
    *
-   * <p>IMA DAI URIs are those with a scheme of {@code "imadai"}.
-   *
-   * @param imaServerSideAdInsertionMediaSourceFactory The {@link MediaSource.Factory} for IMA DAI
+   * @param serverSideAdInsertionMediaSourceFactory The {@link MediaSource.Factory} for SSAI
    *     content, or {@code null} to remove a previously set {@link MediaSource.Factory}.
    * @return This factory, for convenience.
    */
-  public DefaultMediaSourceFactory setImaServerSideAdInsertionMediaSourceFactory(
-      @Nullable MediaSource.Factory imaServerSideAdInsertionMediaSourceFactory) {
-    this.imaServerSideAdInsertionMediaSourceFactory = imaServerSideAdInsertionMediaSourceFactory;
+  public DefaultMediaSourceFactory setServerSideAdInsertionMediaSourceFactory(
+      @Nullable MediaSource.Factory serverSideAdInsertionMediaSourceFactory) {
+    this.serverSideAdInsertionMediaSourceFactory = serverSideAdInsertionMediaSourceFactory;
     return this;
   }
 
@@ -308,8 +306,8 @@ public final class DefaultMediaSourceFactory implements MediaSourceFactory {
   public MediaSource createMediaSource(MediaItem mediaItem) {
     Assertions.checkNotNull(mediaItem.localConfiguration);
     @Nullable String scheme = mediaItem.localConfiguration.uri.getScheme();
-    if (scheme != null && scheme.equals("imadai")) {
-      return checkNotNull(imaServerSideAdInsertionMediaSourceFactory).createMediaSource(mediaItem);
+    if (scheme != null && scheme.equals(C.SSAI_SCHEME)) {
+      return checkNotNull(serverSideAdInsertionMediaSourceFactory).createMediaSource(mediaItem);
     }
     @C.ContentType
     int type =