Use C constants as event source ids.

The construction currently in SourceBuilder will be
moving inside of the core lib, so it can't refer to
DemoPlayer constants.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120822759

demo/src/main/java/com/google/android/exoplayer/demo/PlayerActivity.java

@@ -409,29 +409,32 @@ public class PlayerActivity extends Activity implements SurfaceHolder.Callback,
 
   private void updateButtonVisibilities() {
     retryButton.setVisibility(playerNeedsSource ? View.VISIBLE : View.GONE);
-    videoButton.setVisibility(haveTracks(DemoPlayer.TYPE_VIDEO) ? View.VISIBLE : View.GONE);
-    audioButton.setVisibility(haveTracks(DemoPlayer.TYPE_AUDIO) ? View.VISIBLE : View.GONE);
-    textButton.setVisibility(haveTracks(DemoPlayer.TYPE_TEXT) ? View.VISIBLE : View.GONE);
+    videoButton.setVisibility(haveTracks(DemoPlayer.RENDERER_INDEX_VIDEO) ? View.VISIBLE
+        : View.GONE);
+    audioButton.setVisibility(haveTracks(DemoPlayer.RENDERER_INDEX_AUDIO) ? View.VISIBLE
+        : View.GONE);
+    textButton.setVisibility(haveTracks(DemoPlayer.RENDERER_INDEX_TEXT) ? View.VISIBLE
+        : View.GONE);
   }
 
-  private boolean haveTracks(int type) {
+  private boolean haveTracks(int rendererIndex) {
     TrackInfo trackInfo = player == null ? null : player.getTrackInfo();
-    return trackInfo != null && trackInfo.getTrackGroups(type).length != 0;
+    return trackInfo != null && trackInfo.getTrackGroups(rendererIndex).length != 0;
   }
 
   public void showVideoPopup(@SuppressWarnings("unused") View v) {
     trackSelectionHelper.showSelectionDialog(this, R.string.video, player.getTrackInfo(),
-        DemoPlayer.TYPE_VIDEO);
+        DemoPlayer.RENDERER_INDEX_VIDEO);
   }
 
   public void showAudioPopup(@SuppressWarnings("unused") View v) {
     trackSelectionHelper.showSelectionDialog(this, R.string.audio, player.getTrackInfo(),
-        DemoPlayer.TYPE_AUDIO);
+        DemoPlayer.RENDERER_INDEX_AUDIO);
   }
 
   public void showTextPopup(@SuppressWarnings("unused") View v) {
     trackSelectionHelper.showSelectionDialog(this, R.string.text, player.getTrackInfo(),
-        DemoPlayer.TYPE_TEXT);
+        DemoPlayer.RENDERER_INDEX_TEXT);
   }
 
   private void toggleControlsVisibility()  {

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

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer.demo.player;
 
+import com.google.android.exoplayer.C;
 import com.google.android.exoplayer.CodecCounters;
 import com.google.android.exoplayer.DefaultTrackSelector;
 import com.google.android.exoplayer.DefaultTrackSelector.TrackInfo;
@@ -133,10 +134,10 @@ public class DemoPlayer implements ExoPlayer.Listener, DefaultTrackSelector.Even
   public static final int STATE_ENDED = ExoPlayer.STATE_ENDED;
 
   public static final int RENDERER_COUNT = 4;
-  public static final int TYPE_VIDEO = 0;
-  public static final int TYPE_AUDIO = 1;
-  public static final int TYPE_TEXT = 2;
-  public static final int TYPE_METADATA = 3;
+  public static final int RENDERER_INDEX_VIDEO = 0;
+  public static final int RENDERER_INDEX_AUDIO = 1;
+  public static final int RENDERER_INDEX_TEXT = 2;
+  public static final int RENDERER_INDEX_METADATA = 3;
 
   private final ExoPlayer player;
   private final DefaultTrackSelector trackSelector;
@@ -336,10 +337,10 @@ public class DemoPlayer implements ExoPlayer.Listener, DefaultTrackSelector.Even
     if (infoListener == null) {
       return;
     }
-    if (sourceId == TYPE_VIDEO) {
+    if (sourceId == C.TRACK_TYPE_VIDEO) {
       videoFormat = format;
       infoListener.onVideoFormatEnabled(format, trigger, mediaTimeMs);
-    } else if (sourceId == TYPE_AUDIO) {
+    } else if (sourceId == C.TRACK_TYPE_AUDIO) {
       infoListener.onAudioFormatEnabled(format, trigger, mediaTimeMs);
     }
   }

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

@@ -81,23 +81,21 @@ public class SourceBuilder {
     ChunkSource videoChunkSource = new DashChunkSource(manifestFetcher, C.TRACK_TYPE_VIDEO,
         videoDataSource, new AdaptiveEvaluator(bandwidthMeter));
     ChunkSampleSource videoSampleSource = new ChunkSampleSource(videoChunkSource, loadControl,
-        VIDEO_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, DemoPlayer.TYPE_VIDEO);
+        VIDEO_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, C.TRACK_TYPE_VIDEO);
 
     // Build the audio renderer.
     DataSource audioDataSource = dataSourceFactory.createDataSource(bandwidthMeter);
     ChunkSource audioChunkSource = new DashChunkSource(manifestFetcher, C.TRACK_TYPE_AUDIO,
         audioDataSource, null);
     ChunkSampleSource audioSampleSource = new ChunkSampleSource(audioChunkSource, loadControl,
-        AUDIO_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player,
-        DemoPlayer.TYPE_AUDIO);
+        AUDIO_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, C.TRACK_TYPE_AUDIO);
 
     // Build the text renderer.
     DataSource textDataSource = dataSourceFactory.createDataSource(bandwidthMeter);
     ChunkSource textChunkSource = new DashChunkSource(manifestFetcher, C.TRACK_TYPE_TEXT,
         textDataSource, null);
     ChunkSampleSource textSampleSource = new ChunkSampleSource(textChunkSource, loadControl,
-        TEXT_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player,
-        DemoPlayer.TYPE_TEXT);
+        TEXT_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, C.TRACK_TYPE_TEXT);
 
     return new MultiSampleSource(videoSampleSource, audioSampleSource, textSampleSource);
   }
@@ -122,22 +120,21 @@ public class SourceBuilder {
     ChunkSource videoChunkSource = new SmoothStreamingChunkSource(manifestFetcher,
         C.TRACK_TYPE_VIDEO, videoDataSource, new AdaptiveEvaluator(bandwidthMeter));
     ChunkSampleSource videoSampleSource = new ChunkSampleSource(videoChunkSource, loadControl,
-        VIDEO_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player,
-        DemoPlayer.TYPE_VIDEO);
+        VIDEO_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, C.TRACK_TYPE_VIDEO);
 
     // Build the audio renderer.
     DataSource audioDataSource = dataSourceFactory.createDataSource(bandwidthMeter);
     ChunkSource audioChunkSource = new SmoothStreamingChunkSource(manifestFetcher,
         C.TRACK_TYPE_AUDIO, audioDataSource, null);
     ChunkSampleSource audioSampleSource = new ChunkSampleSource(audioChunkSource, loadControl,
-        AUDIO_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, DemoPlayer.TYPE_AUDIO);
+        AUDIO_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, C.TRACK_TYPE_AUDIO);
 
     // Build the text renderer.
     DataSource textDataSource = dataSourceFactory.createDataSource(bandwidthMeter);
-    ChunkSource textChunkSource = new SmoothStreamingChunkSource(manifestFetcher,
-        C.TRACK_TYPE_TEXT, textDataSource, null);
+    ChunkSource textChunkSource = new SmoothStreamingChunkSource(manifestFetcher, C.TRACK_TYPE_TEXT,
+        textDataSource, null);
     ChunkSampleSource textSampleSource = new ChunkSampleSource(textChunkSource, loadControl,
-        TEXT_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, DemoPlayer.TYPE_TEXT);
+        TEXT_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, C.TRACK_TYPE_TEXT);
 
     return new MultiSampleSource(videoSampleSource, audioSampleSource, textSampleSource);
   }
@@ -156,23 +153,23 @@ public class SourceBuilder {
     PtsTimestampAdjusterProvider timestampAdjusterProvider = new PtsTimestampAdjusterProvider();
 
     DataSource defaultDataSource = dataSourceFactory.createDataSource(bandwidthMeter);
-    HlsChunkSource defaultChunkSource = new HlsChunkSource(manifestFetcher,
-        C.TRACK_TYPE_DEFAULT, defaultDataSource, timestampAdjusterProvider,
+    HlsChunkSource defaultChunkSource = new HlsChunkSource(manifestFetcher, C.TRACK_TYPE_DEFAULT,
+        defaultDataSource, timestampAdjusterProvider,
         new FormatEvaluator.AdaptiveEvaluator(bandwidthMeter));
     HlsSampleSource defaultSampleSource = new HlsSampleSource(defaultChunkSource, loadControl,
-        MUXED_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, DemoPlayer.TYPE_VIDEO);
+        MUXED_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, C.TRACK_TYPE_VIDEO);
 
     DataSource audioDataSource = dataSourceFactory.createDataSource(bandwidthMeter);
     HlsChunkSource audioChunkSource = new HlsChunkSource(manifestFetcher, C.TRACK_TYPE_AUDIO,
         audioDataSource, timestampAdjusterProvider, null);
     HlsSampleSource audioSampleSource = new HlsSampleSource(audioChunkSource, loadControl,
-        AUDIO_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, DemoPlayer.TYPE_AUDIO);
+        AUDIO_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, C.TRACK_TYPE_AUDIO);
 
     DataSource subtitleDataSource = dataSourceFactory.createDataSource(bandwidthMeter);
-    HlsChunkSource subtitleChunkSource = new HlsChunkSource(manifestFetcher,
-        C.TRACK_TYPE_TEXT, subtitleDataSource, timestampAdjusterProvider, null);
+    HlsChunkSource subtitleChunkSource = new HlsChunkSource(manifestFetcher, C.TRACK_TYPE_TEXT,
+        subtitleDataSource, timestampAdjusterProvider, null);
     HlsSampleSource subtitleSampleSource = new HlsSampleSource(subtitleChunkSource, loadControl,
-        TEXT_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, DemoPlayer.TYPE_TEXT);
+        TEXT_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, mainHandler, player, C.TRACK_TYPE_TEXT);
 
     return new MultiSampleSource(defaultSampleSource, audioSampleSource, subtitleSampleSource);
   }