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Replace hash by Object reference for uids.

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There is the small (but unlikely) chance that the uids clash because the
Objects have the same hash code.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=198855724
This commit is contained in:
tonihei 2018-06-01 04:31:10 -07:00 committed by Oliver Woodman
parent b6113763b4
commit bf3c943b23
1 changed files with 9 additions and 13 deletions
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22
library/core/src/main/java/com/google/android/exoplayer2/source/ConcatenatingMediaSource.java
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@ -19,7 +19,6 @@ import android.os.Handler;
import android.os.Looper;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.util.SparseIntArray;
import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.ExoPlaybackException;
import com.google.android.exoplayer2.ExoPlayer;
@ -34,6 +33,7 @@ import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.IdentityHashMap;
import java.util.List;
import java.util.Map;
@ -664,7 +664,7 @@ public class ConcatenatingMediaSource extends CompositeMediaSource<MediaSourceHo
/* package */ static final class MediaSourceHolder implements Comparable<MediaSourceHolder> {
public final MediaSource mediaSource;
public final int uid;
public final Object uid;
public DeferredTimeline timeline;
public int childIndex;
@ -679,7 +679,7 @@ public class ConcatenatingMediaSource extends CompositeMediaSource<MediaSourceHo
this.mediaSource = mediaSource;
this.timeline = new DeferredTimeline();
this.activeMediaPeriods = new ArrayList<>();
this.uid = System.identityHashCode(this);
this.uid = new Object();
}
public void reset(int childIndex, int firstWindowIndexInChild, int firstPeriodIndexInChild) {
@ -738,8 +738,8 @@ public class ConcatenatingMediaSource extends CompositeMediaSource<MediaSourceHo
private final int[] firstPeriodInChildIndices;
private final int[] firstWindowInChildIndices;
private final Timeline[] timelines;
private final int[] uids;
private final SparseIntArray childIndexByUid;
private final Object[] uids;
private final HashMap<Object, Integer> childIndexByUid;
public ConcatenatedTimeline(
Collection<MediaSourceHolder> mediaSourceHolders,
@ -754,8 +754,8 @@ public class ConcatenatingMediaSource extends CompositeMediaSource<MediaSourceHo
firstPeriodInChildIndices = new int[childCount];
firstWindowInChildIndices = new int[childCount];
timelines = new Timeline[childCount];
uids = new int[childCount];
childIndexByUid = new SparseIntArray();
uids = new Object[childCount];
childIndexByUid = new HashMap<>();
int index = 0;
for (MediaSourceHolder mediaSourceHolder : mediaSourceHolders) {
timelines[index] = mediaSourceHolder.timeline;
@ -778,11 +778,8 @@ public class ConcatenatingMediaSource extends CompositeMediaSource<MediaSourceHo
@Override
protected int getChildIndexByChildUid(Object childUid) {
if (!(childUid instanceof Integer)) {
return C.INDEX_UNSET;
}
int index = childIndexByUid.get((int) childUid, -1);
return index == -1 ? C.INDEX_UNSET : index;
Integer index = childIndexByUid.get(childUid);
return index == null ? C.INDEX_UNSET : index;
}
@Override
@ -814,7 +811,6 @@ public class ConcatenatingMediaSource extends CompositeMediaSource<MediaSourceHo
public int getPeriodCount() {
return periodCount;
}
}
/**