Increase flexibility of ISM URL handling

PiperOrigin-RevId: 326025335

library/common/src/main/java/com/google/android/exoplayer2/util/Util.java

@@ -142,8 +142,7 @@ public final class Util {
   private static final Pattern ESCAPED_CHARACTER_PATTERN = Pattern.compile("%([A-Fa-f0-9]{2})");
 
   // https://docs.microsoft.com/en-us/azure/media-services/previous/media-services-deliver-content-overview#URLs.
-  private static final Pattern ISM_URL_PATTERN =
-      Pattern.compile(".*\\.ism(?:l)?(?:/(?:manifest(?:\\((.+)\\))?)?)?");
+  private static final Pattern ISM_URL_PATTERN = Pattern.compile(".*\\.isml?(?:/(manifest(.*))?)?");
   private static final String ISM_HLS_FORMAT_EXTENSION = "format=m3u8-aapl";
   private static final String ISM_DASH_FORMAT_EXTENSION = "format=mpd-time-csf";
 
@@ -1723,7 +1722,7 @@ public final class Util {
     }
     Matcher ismMatcher = ISM_URL_PATTERN.matcher(fileName);
     if (ismMatcher.matches()) {
-      @Nullable String extensions = ismMatcher.group(1);
+      @Nullable String extensions = ismMatcher.group(2);
       if (extensions != null) {
         if (extensions.contains(ISM_DASH_FORMAT_EXTENSION)) {
           return C.TYPE_DASH;
@@ -1779,6 +1778,27 @@ public final class Util {
     }
   }
 
+  /**
+   * If the provided URI is an ISM Presentation URI, returns the URI with "Manifest" appended to its
+   * path (i.e., the corresponding default manifest URI). Else returns the provided URI without
+   * modification. See [MS-SSTR] v20180912, section 2.2.1.
+   *
+   * @param uri The original URI.
+   * @return The fixed URI.
+   */
+  public static Uri fixSmoothStreamingIsmManifestUri(Uri uri) {
+    @Nullable String path = toLowerInvariant(uri.getPath());
+    if (path == null) {
+      return uri;
+    }
+    Matcher ismMatcher = ISM_URL_PATTERN.matcher(path);
+    if (ismMatcher.matches() && ismMatcher.group(1) == null) {
+      // Add missing "Manifest" suffix.
+      return Uri.withAppendedPath(uri, "Manifest");
+    }
+    return uri;
+  }
+
   /**
    * Returns the specified millisecond time formatted as a string.
    *

library/common/src/test/java/com/google/android/exoplayer2/util/UtilTest.java

@@ -26,6 +26,7 @@ import static com.google.common.truth.Truth.assertThat;
 
 import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteOpenHelper;
+import android.net.Uri;
 import android.text.SpannableString;
 import android.text.Spanned;
 import android.text.style.StrikethroughSpan;
@@ -127,13 +128,39 @@ public class UtilTest {
     assertThat(Util.inferContentType("http://a.b/c.ism/Manifest")).isEqualTo(C.TYPE_SS);
     assertThat(Util.inferContentType("http://a.b/c.isml/manifest")).isEqualTo(C.TYPE_SS);
     assertThat(Util.inferContentType("http://a.b/c.isml/manifest(filter=x)")).isEqualTo(C.TYPE_SS);
+    assertThat(Util.inferContentType("http://a.b/c.isml/manifest_hd")).isEqualTo(C.TYPE_SS);
   }
 
   @Test
   public void inferContentType_handlesOtherIsmUris() {
     assertThat(Util.inferContentType("http://a.b/c.ism/video.mp4")).isEqualTo(C.TYPE_OTHER);
     assertThat(Util.inferContentType("http://a.b/c.ism/prefix-manifest")).isEqualTo(C.TYPE_OTHER);
-    assertThat(Util.inferContentType("http://a.b/c.ism/manifest-suffix")).isEqualTo(C.TYPE_OTHER);
+  }
+
+  @Test
+  public void fixSmoothStreamingIsmManifestUri_addsManifestSuffix() {
+    assertThat(Util.fixSmoothStreamingIsmManifestUri(Uri.parse("http://a.b/c.ism")))
+        .isEqualTo(Uri.parse("http://a.b/c.ism/Manifest"));
+    assertThat(Util.fixSmoothStreamingIsmManifestUri(Uri.parse("http://a.b/c.isml")))
+        .isEqualTo(Uri.parse("http://a.b/c.isml/Manifest"));
+
+    assertThat(Util.fixSmoothStreamingIsmManifestUri(Uri.parse("http://a.b/c.ism/")))
+        .isEqualTo(Uri.parse("http://a.b/c.ism/Manifest"));
+    assertThat(Util.fixSmoothStreamingIsmManifestUri(Uri.parse("http://a.b/c.isml/")))
+        .isEqualTo(Uri.parse("http://a.b/c.isml/Manifest"));
+  }
+
+  @Test
+  public void fixSmoothStreamingIsmManifestUri_doesNotAlterManifestUri() {
+    assertThat(Util.fixSmoothStreamingIsmManifestUri(Uri.parse("http://a.b/c.ism/Manifest")))
+        .isEqualTo(Uri.parse("http://a.b/c.ism/Manifest"));
+    assertThat(Util.fixSmoothStreamingIsmManifestUri(Uri.parse("http://a.b/c.isml/Manifest")))
+        .isEqualTo(Uri.parse("http://a.b/c.isml/Manifest"));
+    assertThat(
+            Util.fixSmoothStreamingIsmManifestUri(Uri.parse("http://a.b/c.ism/Manifest(filter=x)")))
+        .isEqualTo(Uri.parse("http://a.b/c.ism/Manifest(filter=x)"));
+    assertThat(Util.fixSmoothStreamingIsmManifestUri(Uri.parse("http://a.b/c.ism/Manifest_hd")))
+        .isEqualTo(Uri.parse("http://a.b/c.ism/Manifest_hd"));
   }
 
   @Test

library/smoothstreaming/src/main/java/com/google/android/exoplayer2/source/smoothstreaming/SsMediaSource.java

@@ -47,7 +47,6 @@ import com.google.android.exoplayer2.source.SinglePeriodTimeline;
 import com.google.android.exoplayer2.source.smoothstreaming.manifest.SsManifest;
 import com.google.android.exoplayer2.source.smoothstreaming.manifest.SsManifest.StreamElement;
 import com.google.android.exoplayer2.source.smoothstreaming.manifest.SsManifestParser;
-import com.google.android.exoplayer2.source.smoothstreaming.manifest.SsUtil;
 import com.google.android.exoplayer2.upstream.Allocator;
 import com.google.android.exoplayer2.upstream.DataSource;
 import com.google.android.exoplayer2.upstream.DefaultLoadErrorHandlingPolicy;
@@ -581,7 +580,7 @@ public final class SsMediaSource extends BaseMediaSource
     this.manifestUri =
         playbackProperties.uri.equals(Uri.EMPTY)
             ? null
-            : SsUtil.fixManifestUri(playbackProperties.uri);
+            : Util.fixSmoothStreamingIsmManifestUri(playbackProperties.uri);
     this.manifestDataSourceFactory = manifestDataSourceFactory;
     this.manifestParser = manifestParser;
     this.chunkSourceFactory = chunkSourceFactory;

library/smoothstreaming/src/main/java/com/google/android/exoplayer2/source/smoothstreaming/manifest/SsUtil.java

@@ -1,35 +0,0 @@
-/*
- * 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 com.google.android.exoplayer2.source.smoothstreaming.manifest;
-
-import android.net.Uri;
-import com.google.android.exoplayer2.util.Util;
-
-/** SmoothStreaming related utility methods. */
-public final class SsUtil {
-
-  /** Returns a fixed SmoothStreaming client manifest {@link Uri}. */
-  public static Uri fixManifestUri(Uri manifestUri) {
-    String lastPathSegment = manifestUri.getLastPathSegment();
-    if (lastPathSegment != null
-        && Util.toLowerInvariant(lastPathSegment).matches("manifest(\\(.+\\))?")) {
-      return manifestUri;
-    }
-    return Uri.withAppendedPath(manifestUri, "Manifest");
-  }
-
-  private SsUtil() {}
-}

library/smoothstreaming/src/main/java/com/google/android/exoplayer2/source/smoothstreaming/offline/SsDownloader.java

@@ -24,11 +24,11 @@ import com.google.android.exoplayer2.offline.StreamKey;
 import com.google.android.exoplayer2.source.smoothstreaming.manifest.SsManifest;
 import com.google.android.exoplayer2.source.smoothstreaming.manifest.SsManifest.StreamElement;
 import com.google.android.exoplayer2.source.smoothstreaming.manifest.SsManifestParser;
-import com.google.android.exoplayer2.source.smoothstreaming.manifest.SsUtil;
 import com.google.android.exoplayer2.upstream.DataSource;
 import com.google.android.exoplayer2.upstream.DataSpec;
 import com.google.android.exoplayer2.upstream.ParsingLoadable.Parser;
 import com.google.android.exoplayer2.upstream.cache.CacheDataSource;
+import com.google.android.exoplayer2.util.Util;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.Executor;
@@ -112,7 +112,9 @@ public final class SsDownloader extends SegmentDownloader<SsManifest> {
     this(
         mediaItem
             .buildUpon()
-            .setUri(SsUtil.fixManifestUri(checkNotNull(mediaItem.playbackProperties).uri))
+            .setUri(
+                Util.fixSmoothStreamingIsmManifestUri(
+                    checkNotNull(mediaItem.playbackProperties).uri))
             .build(),
         new SsManifestParser(),
         cacheDataSourceFactory,