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Make DefaultLoadControl use PriorityTaskManager if one is given

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-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=144448491
This commit is contained in:
eguven 2017-01-13 09:01:59 -08:00 committed by Oliver Woodman
parent 5a16aee2c9
commit 418cd9e7e3
1 changed files with 43 additions and 0 deletions
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43
library/src/main/java/com/google/android/exoplayer2/DefaultLoadControl.java
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@ -19,6 +19,7 @@ import com.google.android.exoplayer2.source.TrackGroupArray;
import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
import com.google.android.exoplayer2.upstream.Allocator;
import com.google.android.exoplayer2.upstream.DefaultAllocator;
import com.google.android.exoplayer2.util.PriorityTaskManager;
import com.google.android.exoplayer2.util.Util;
/**
@ -50,6 +51,11 @@ public final class DefaultLoadControl implements LoadControl {
*/
public static final int DEFAULT_BUFFER_FOR_PLAYBACK_AFTER_REBUFFER_MS = 5000;
/**
* Priority for media loading.
*/
public static final int LOADING_PRIORITY = 0;
private static final int ABOVE_HIGH_WATERMARK = 0;
private static final int BETWEEN_WATERMARKS = 1;
private static final int BELOW_LOW_WATERMARK = 2;
@ -60,6 +66,7 @@ public final class DefaultLoadControl implements LoadControl {
private final long maxBufferUs;
private final long bufferForPlaybackUs;
private final long bufferForPlaybackAfterRebufferUs;
private final PriorityTaskManager priorityTaskManager;
private int targetBufferSize;
private boolean isBuffering;
@ -97,11 +104,36 @@ public final class DefaultLoadControl implements LoadControl {
*/
public DefaultLoadControl(DefaultAllocator allocator, int minBufferMs, int maxBufferMs,
long bufferForPlaybackMs, long bufferForPlaybackAfterRebufferMs) {
this(allocator, minBufferMs, maxBufferMs, bufferForPlaybackMs, bufferForPlaybackAfterRebufferMs,
null);
}
/**
* Constructs a new instance.
*
* @param allocator The {@link DefaultAllocator} used by the loader.
* @param minBufferMs The minimum duration of media that the player will attempt to ensure is
* buffered at all times, in milliseconds.
* @param maxBufferMs The maximum duration of media that the player will attempt buffer, in
* milliseconds.
* @param bufferForPlaybackMs The duration of media that must be buffered for playback to start or
* resume following a user action such as a seek, in milliseconds.
* @param bufferForPlaybackAfterRebufferMs The default duration of media that must be buffered for
* playback to resume after a rebuffer, in milliseconds. A rebuffer is defined to be caused by
* buffer depletion rather than a user action.
* @param priorityTaskManager If not null, registers itself as a task with priority
* {@link #LOADING_PRIORITY} during loading periods, and unregisters itself during draining
* periods.
*/
public DefaultLoadControl(DefaultAllocator allocator, int minBufferMs, int maxBufferMs,
long bufferForPlaybackMs, long bufferForPlaybackAfterRebufferMs,
PriorityTaskManager priorityTaskManager) {
this.allocator = allocator;
minBufferUs = minBufferMs * 1000L;
maxBufferUs = maxBufferMs * 1000L;
bufferForPlaybackUs = bufferForPlaybackMs * 1000L;
bufferForPlaybackAfterRebufferUs = bufferForPlaybackAfterRebufferMs * 1000L;
this.priorityTaskManager = priorityTaskManager;
}
@Override
@ -146,8 +178,16 @@ public final class DefaultLoadControl implements LoadControl {
public boolean shouldContinueLoading(long bufferedDurationUs) {
int bufferTimeState = getBufferTimeState(bufferedDurationUs);
boolean targetBufferSizeReached = allocator.getTotalBytesAllocated() >= targetBufferSize;
boolean wasBuffering = isBuffering;
isBuffering = bufferTimeState == BELOW_LOW_WATERMARK
|| (bufferTimeState == BETWEEN_WATERMARKS && isBuffering && !targetBufferSizeReached);
if (priorityTaskManager != null && isBuffering != wasBuffering) {
if (isBuffering) {
priorityTaskManager.add(LOADING_PRIORITY);
} else {
priorityTaskManager.remove(LOADING_PRIORITY);
}
}
return isBuffering;
}
@ -158,6 +198,9 @@ public final class DefaultLoadControl implements LoadControl {
private void reset(boolean resetAllocator) {
targetBufferSize = 0;
if (priorityTaskManager != null && isBuffering) {
priorityTaskManager.remove(LOADING_PRIORITY);
}
isBuffering = false;
if (resetAllocator) {
allocator.reset();