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hybridmediaplayer/src/main/java/hybridmediaplayer/BasePlayer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,181 @@ | ||
| package hybridmediaplayer; | ||
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| import androidx.annotation.Nullable; | ||
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| import com.google.android.exoplayer2.C; | ||
| import com.google.android.exoplayer2.Player; | ||
| import com.google.android.exoplayer2.Timeline; | ||
| import com.google.android.exoplayer2.util.Util; | ||
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| /** Abstract base {@link Player} which implements common implementation independent methods. */ | ||
| public abstract class BasePlayer implements Player { | ||
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| protected final Timeline.Window window; | ||
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| public BasePlayer() { | ||
| window = new Timeline.Window(); | ||
| } | ||
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| @Override | ||
| public final void seekToDefaultPosition() { | ||
| seekToDefaultPosition(getCurrentWindowIndex()); | ||
| } | ||
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| @Override | ||
| public final void seekToDefaultPosition(int windowIndex) { | ||
| seekTo(windowIndex, /* positionMs= */ C.TIME_UNSET); | ||
| } | ||
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| @Override | ||
| public final void seekTo(long positionMs) { | ||
| seekTo(getCurrentWindowIndex(), positionMs); | ||
| } | ||
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| @Override | ||
| public final boolean hasPrevious() { | ||
| return getPreviousWindowIndex() != C.INDEX_UNSET; | ||
| } | ||
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| @Override | ||
| public final void previous() { | ||
| int previousWindowIndex = getPreviousWindowIndex(); | ||
| if (previousWindowIndex != C.INDEX_UNSET) { | ||
| seekToDefaultPosition(previousWindowIndex); | ||
| } | ||
| } | ||
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| @Override | ||
| public final boolean hasNext() { | ||
| return getNextWindowIndex() != C.INDEX_UNSET; | ||
| } | ||
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| @Override | ||
| public final void next() { | ||
| int nextWindowIndex = getNextWindowIndex(); | ||
| if (nextWindowIndex != C.INDEX_UNSET) { | ||
| seekToDefaultPosition(nextWindowIndex); | ||
| } | ||
| } | ||
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| @Override | ||
| public final void stop() { | ||
| stop(/* reset= */ false); | ||
| } | ||
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| @Override | ||
| public final int getNextWindowIndex() { | ||
| Timeline timeline = getCurrentTimeline(); | ||
| return timeline.isEmpty() | ||
| ? C.INDEX_UNSET | ||
| : timeline.getNextWindowIndex( | ||
| getCurrentWindowIndex(), getRepeatModeForNavigation(), getShuffleModeEnabled()); | ||
| } | ||
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| @Override | ||
| public final int getPreviousWindowIndex() { | ||
| Timeline timeline = getCurrentTimeline(); | ||
| return timeline.isEmpty() | ||
| ? C.INDEX_UNSET | ||
| : timeline.getPreviousWindowIndex( | ||
| getCurrentWindowIndex(), getRepeatModeForNavigation(), getShuffleModeEnabled()); | ||
| } | ||
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| @Override | ||
| @Nullable | ||
| public final Object getCurrentTag() { | ||
| int windowIndex = getCurrentWindowIndex(); | ||
| Timeline timeline = getCurrentTimeline(); | ||
| return windowIndex >= timeline.getWindowCount() | ||
| ? null | ||
| : timeline.getWindow(windowIndex, window, /* setTag= */ true).tag; | ||
| } | ||
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| @Override | ||
| public final int getBufferedPercentage() { | ||
| long position = getBufferedPosition(); | ||
| long duration = getDuration(); | ||
| return position == C.TIME_UNSET || duration == C.TIME_UNSET | ||
| ? 0 | ||
| : duration == 0 ? 100 : Util.constrainValue((int) ((position * 100) / duration), 0, 100); | ||
| } | ||
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| @Override | ||
| public final boolean isCurrentWindowDynamic() { | ||
| Timeline timeline = getCurrentTimeline(); | ||
| return !timeline.isEmpty() && timeline.getWindow(getCurrentWindowIndex(), window).isDynamic; | ||
| } | ||
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| @Override | ||
| public final boolean isCurrentWindowSeekable() { | ||
| Timeline timeline = getCurrentTimeline(); | ||
| return !timeline.isEmpty() && timeline.getWindow(getCurrentWindowIndex(), window).isSeekable; | ||
| } | ||
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| @Override | ||
| public final long getContentDuration() { | ||
| Timeline timeline = getCurrentTimeline(); | ||
| return timeline.isEmpty() | ||
| ? C.TIME_UNSET | ||
| : timeline.getWindow(getCurrentWindowIndex(), window).getDurationMs(); | ||
| } | ||
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| @RepeatMode | ||
| private int getRepeatModeForNavigation() { | ||
| @RepeatMode int repeatMode = getRepeatMode(); | ||
| return repeatMode == REPEAT_MODE_ONE ? REPEAT_MODE_OFF : repeatMode; | ||
| } | ||
|
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| /** Holds a listener reference. */ | ||
| protected static final class ListenerHolder { | ||
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| /** | ||
| * The listener on which {link #invoke} will execute {@link ListenerInvocation listener | ||
| * invocations}. | ||
| */ | ||
| public final Player.EventListener listener; | ||
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| private boolean released; | ||
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| public ListenerHolder(Player.EventListener listener) { | ||
| this.listener = listener; | ||
| } | ||
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| /** Prevents any further {@link ListenerInvocation} to be executed on {@link #listener}. */ | ||
| public void release() { | ||
| released = true; | ||
| } | ||
|
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| /** | ||
| * Executes the given {@link ListenerInvocation} on {@link #listener}. Does nothing if {@link | ||
| * #release} has been called on this instance. | ||
| */ | ||
| public void invoke(ListenerInvocation listenerInvocation) { | ||
| if (!released) { | ||
| listenerInvocation.invokeListener(listener); | ||
| } | ||
| } | ||
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| @Override | ||
| public boolean equals(@Nullable Object other) { | ||
| if (this == other) { | ||
| return true; | ||
| } | ||
| if (other == null || getClass() != other.getClass()) { | ||
| return false; | ||
| } | ||
| return listener.equals(((ListenerHolder) other).listener); | ||
| } | ||
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| @Override | ||
| public int hashCode() { | ||
| return listener.hashCode(); | ||
| } | ||
| } | ||
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| /** Parameterized invocation of a {@link Player.EventListener} method. */ | ||
| protected interface ListenerInvocation { | ||
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| /** Executes the invocation on the given {@link Player.EventListener}. */ | ||
| void invokeListener(Player.EventListener listener); | ||
| } | ||
| } |
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