Fix a few issues with SmoothStreaming in V2.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119049397

demo/src/main/java/com/google/android/exoplayer/demo/player/SmoothStreamingSourceBuilder.java

@@ -32,6 +32,7 @@ import com.google.android.exoplayer.upstream.DataSource;
 import com.google.android.exoplayer.upstream.DataSourceFactory;
 import com.google.android.exoplayer.upstream.DataSourceFactory;
 import com.google.android.exoplayer.upstream.DefaultAllocator;
 import com.google.android.exoplayer.upstream.DefaultAllocator;
 import com.google.android.exoplayer.util.ManifestFetcher;
 import com.google.android.exoplayer.util.ManifestFetcher;
+import com.google.android.exoplayer.util.Util;
 
 
 import android.net.Uri;
 import android.net.Uri;
 import android.os.Handler;
 import android.os.Handler;
@@ -55,7 +56,7 @@ public class SmoothStreamingSourceBuilder implements SourceBuilder {
   public SmoothStreamingSourceBuilder(DataSourceFactory dataSourceFactory, String url,
   public SmoothStreamingSourceBuilder(DataSourceFactory dataSourceFactory, String url,
       MediaDrmCallback drmCallback) {
       MediaDrmCallback drmCallback) {
     this.dataSourceFactory = dataSourceFactory;
     this.dataSourceFactory = dataSourceFactory;
-    this.url = url;
+    this.url = Util.toLowerInvariant(url).endsWith("/manifest") ? url : url + "/Manifest";
     this.drmCallback = drmCallback;
     this.drmCallback = drmCallback;
   }
   }
 
 

library/src/main/java/com/google/android/exoplayer/smoothstreaming/SmoothStreamingChunkSource.java

@@ -275,10 +275,8 @@ public class SmoothStreamingChunkSource implements ChunkSource {
       return;
       return;
     }
     }
 
 
-    boolean isLastChunk = !currentManifest.isLive && chunkIndex == streamElement.chunkCount - 1;
     long chunkStartTimeUs = streamElement.getStartTimeUs(chunkIndex);
     long chunkStartTimeUs = streamElement.getStartTimeUs(chunkIndex);
-    long chunkEndTimeUs = isLastChunk ? -1
-        : chunkStartTimeUs + streamElement.getChunkDurationUs(chunkIndex);
+    long chunkEndTimeUs = chunkStartTimeUs + streamElement.getChunkDurationUs(chunkIndex);
     int currentAbsoluteChunkIndex = chunkIndex + currentManifestChunkOffset;
     int currentAbsoluteChunkIndex = chunkIndex + currentManifestChunkOffset;
 
 
     int trackGroupTrackIndex = getTrackGroupTrackIndex(trackGroup, selectedFormat);
     int trackGroupTrackIndex = getTrackGroupTrackIndex(trackGroup, selectedFormat);
@@ -325,7 +323,8 @@ public class SmoothStreamingChunkSource implements ChunkSource {
           extractorWrappers = new ChunkExtractorWrapper[formats.length];
           extractorWrappers = new ChunkExtractorWrapper[formats.length];
           for (int j = 0; j < formats.length; j++) {
           for (int j = 0; j < formats.length; j++) {
             int nalUnitLengthFieldLength = streamElementType == StreamElement.TYPE_VIDEO ? 4 : -1;
             int nalUnitLengthFieldLength = streamElementType == StreamElement.TYPE_VIDEO ? 4 : -1;
-            Track track = new Track(j, streamElementType, timescale, C.UNKNOWN_TIME_US, durationUs,
+            int mp4TrackType = getMp4TrackType(streamElementType);
+            Track track = new Track(j, mp4TrackType, timescale, C.UNKNOWN_TIME_US, durationUs,
                 formats[j], trackEncryptionBoxes, nalUnitLengthFieldLength, null, null);
                 formats[j], trackEncryptionBoxes, nalUnitLengthFieldLength, null, null);
             FragmentedMp4Extractor extractor = new FragmentedMp4Extractor(
             FragmentedMp4Extractor extractor = new FragmentedMp4Extractor(
                 FragmentedMp4Extractor.FLAG_WORKAROUND_EVERY_VIDEO_FRAME_IS_SYNC_FRAME
                 FragmentedMp4Extractor.FLAG_WORKAROUND_EVERY_VIDEO_FRAME_IS_SYNC_FRAME
@@ -430,4 +429,17 @@ public class SmoothStreamingChunkSource implements ChunkSource {
     data[secondPosition] = temp;
     data[secondPosition] = temp;
   }
   }
 
 
+  private static int getMp4TrackType(int streamElementType) {
+    switch (streamElementType) {
+      case StreamElement.TYPE_AUDIO:
+        return Track.TYPE_soun;
+      case StreamElement.TYPE_VIDEO:
+        return Track.TYPE_vide;
+      case StreamElement.TYPE_TEXT:
+        return Track.TYPE_text;
+      default:
+        throw new IllegalArgumentException("Invalid stream type: " + streamElementType);
+    }
+  }
+
 }
 }