Show played ad groups

By default played ad groups are shown faded out. This helps the user know
whether they will see an ad when they seek to a given position.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=161098491

library/ui/src/main/java/com/google/android/exoplayer2/ui/DefaultTimeBar.java

@@ -76,6 +76,7 @@ public class DefaultTimeBar extends View implements TimeBar {
   private final Paint bufferedPaint;
   private final Paint unplayedPaint;
   private final Paint adMarkerPaint;
+  private final Paint playedAdMarkerPaint;
   private final Paint scrubberPaint;
   private final int barHeight;
   private final int touchTargetHeight;
@@ -103,6 +104,7 @@ public class DefaultTimeBar extends View implements TimeBar {
   private long bufferedPosition;
   private int adGroupCount;
   private long[] adGroupTimesMs;
+  private boolean[] playedAdGroups;
 
   /**
    * Creates a new time bar.
@@ -117,6 +119,7 @@ public class DefaultTimeBar extends View implements TimeBar {
     bufferedPaint = new Paint();
     unplayedPaint = new Paint();
     adMarkerPaint = new Paint();
+    playedAdMarkerPaint = new Paint();
     scrubberPaint = new Paint();
     scrubberPaint.setAntiAlias(true);
 
@@ -155,11 +158,14 @@ public class DefaultTimeBar extends View implements TimeBar {
             getDefaultUnplayedColor(playedColor));
         int adMarkerColor = a.getInt(R.styleable.DefaultTimeBar_ad_marker_color,
             DEFAULT_AD_MARKER_COLOR);
+        int playedAdMarkerColor = a.getInt(R.styleable.DefaultTimeBar_played_ad_marker_color,
+            getDefaultPlayedAdMarkerColor(adMarkerColor));
         playedPaint.setColor(playedColor);
         scrubberPaint.setColor(scrubberColor);
         bufferedPaint.setColor(bufferedColor);
         unplayedPaint.setColor(unplayedColor);
         adMarkerPaint.setColor(adMarkerColor);
+        playedAdMarkerPaint.setColor(playedAdMarkerColor);
       } finally {
         a.recycle();
       }
@@ -238,10 +244,13 @@ public class DefaultTimeBar extends View implements TimeBar {
   }
 
   @Override
-  public void setAdGroupTimesMs(@Nullable long[] adGroupTimesMs, int adGroupCount) {
+  public void setAdGroupTimesMs(@Nullable long[] adGroupTimesMs, @Nullable boolean[] playedAdGroups,
-    Assertions.checkArgument(adGroupCount == 0 || adGroupTimesMs != null);
+      int adGroupCount) {
+    Assertions.checkArgument(adGroupCount == 0
+        || (adGroupTimesMs != null && playedAdGroups != null));
     this.adGroupCount = adGroupCount;
     this.adGroupTimesMs = adGroupTimesMs;
+    this.playedAdGroups = playedAdGroups;
     update();
   }
 
@@ -524,7 +533,8 @@ public class DefaultTimeBar extends View implements TimeBar {
           (int) (progressBar.width() * adGroupTimeMs / duration) - adMarkerOffset;
       int markerLeft = progressBar.left + Math.min(progressBar.width() - adMarkerWidth,
           Math.max(0, markerPositionOffset));
-      canvas.drawRect(markerLeft, barTop, markerLeft + adMarkerWidth, barBottom, adMarkerPaint);
+      Paint paint = playedAdGroups[i] ? playedAdMarkerPaint : adMarkerPaint;
+      canvas.drawRect(markerLeft, barTop, markerLeft + adMarkerWidth, barBottom, paint);
     }
   }
 
@@ -590,4 +600,8 @@ public class DefaultTimeBar extends View implements TimeBar {
     return 0xCC000000 | (playedColor & 0x00FFFFFF);
   }
 
+  private static int getDefaultPlayedAdMarkerColor(int adMarkerColor) {
+    return 0x33000000 | (adMarkerColor & 0x00FFFFFF);
+  }
+
 }

library/ui/src/main/java/com/google/android/exoplayer2/ui/PlaybackControlView.java

@@ -313,6 +313,7 @@ public class PlaybackControlView extends FrameLayout {
   private @RepeatToggleModes int repeatToggleModes;
   private long hideAtMs;
   private long[] adGroupTimesMs;
+  private boolean[] playedAdGroups;
 
   private final Runnable updateProgressAction = new Runnable() {
     @Override
@@ -364,6 +365,7 @@ public class PlaybackControlView extends FrameLayout {
     formatBuilder = new StringBuilder();
     formatter = new Formatter(formatBuilder, Locale.getDefault());
     adGroupTimesMs = new long[0];
+    playedAdGroups = new boolean[0];
     componentListener = new ComponentListener();
     controlDispatcher = DEFAULT_CONTROL_DISPATCHER;
 
@@ -724,10 +726,6 @@ public class PlaybackControlView extends FrameLayout {
             }
             for (int adGroupIndex = 0; adGroupIndex < period.getAdGroupCount(); adGroupIndex++) {
               long adGroupTimeUs = period.getAdGroupTimeUs(adGroupIndex);
-              if (period.hasPlayedAdGroup(adGroupIndex)) {
-                // Don't show played ad groups.
-                continue;
-              }
               if (adGroupTimeUs == C.TIME_END_OF_SOURCE) {
                 adGroupTimeUs = periodDurationUs;
               }
@@ -736,10 +734,13 @@ public class PlaybackControlView extends FrameLayout {
               }
               if (adGroupTimeUs >= 0 && adGroupTimeUs <= window.durationUs) {
                 if (adGroupTimesMsCount == adGroupTimesMs.length) {
-                  adGroupTimesMs = Arrays.copyOf(adGroupTimesMs,
+                  int newLength = adGroupTimesMs.length == 0 ? 1 : adGroupTimesMs.length * 2;
-                      adGroupTimesMs.length == 0 ? 1 : adGroupTimesMs.length * 2);
+                  adGroupTimesMs = Arrays.copyOf(adGroupTimesMs, newLength);
+                  playedAdGroups = Arrays.copyOf(playedAdGroups, newLength);
                 }
-                adGroupTimesMs[adGroupTimesMsCount++] = C.usToMs(durationUs + adGroupTimeUs);
+                adGroupTimesMs[adGroupTimesMsCount] = C.usToMs(durationUs + adGroupTimeUs);
+                playedAdGroups[adGroupTimesMsCount] = period.hasPlayedAdGroup(adGroupIndex);
+                adGroupTimesMsCount++;
               }
             }
             if (i < periodIndex) {
@@ -757,7 +758,7 @@ public class PlaybackControlView extends FrameLayout {
           bufferedPosition += player.getBufferedPosition();
         }
         if (timeBar != null) {
-          timeBar.setAdGroupTimesMs(adGroupTimesMs, adGroupTimesMsCount);
+          timeBar.setAdGroupTimesMs(adGroupTimesMs, playedAdGroups, adGroupTimesMsCount);
         }
       } else {
         position = player.getCurrentPosition();

library/ui/src/main/java/com/google/android/exoplayer2/ui/TimeBar.java

@@ -78,13 +78,17 @@ public interface TimeBar {
   void setDuration(long duration);
 
   /**
-   * Sets the times of ad groups.
+   * Sets the times of ad groups and whether each ad group has been played.
    *
    * @param adGroupTimesMs An array where the first {@code adGroupCount} elements are the times of
    *     ad groups in milliseconds. May be {@code null} if there are no ad groups.
+   * @param playedAdGroups An array where the first {@code adGroupCount} elements indicate whether
+   *     the corresponding ad groups have been played. May be {@code null} if there are no ad
+   *     groups.
    * @param adGroupCount The number of ad groups.
    */
-  void setAdGroupTimesMs(@Nullable long[] adGroupTimesMs, int adGroupCount);
+  void setAdGroupTimesMs(@Nullable long[] adGroupTimesMs, @Nullable boolean[] playedAdGroups,
+      int adGroupCount);
 
   /**
    * Listener for scrubbing events.

library/ui/src/main/res/values/attrs.xml

@@ -79,6 +79,7 @@
     <attr name="buffered_color" format="color"/>
     <attr name="unplayed_color" format="color"/>
     <attr name="ad_marker_color" format="color"/>
+    <attr name="played_ad_marker_color" format="color"/>
   </declare-styleable>
 
 </resources>