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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream;
import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException;
import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.HttpDataSource.InvalidResponseCodeException;
import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.UnexpectedLoaderException;
import java.io.FileNotFoundException;
import java.io.IOException;
/** Default implementation of {@link LoadErrorHandlingPolicy}. */
public class DefaultLoadErrorHandlingPolicy implements LoadErrorHandlingPolicy {
/** The default minimum number of times to retry loading data prior to propagating the error. */
public static final int DEFAULT_MIN_LOADABLE_RETRY_COUNT = 3;
/**
* The default minimum number of times to retry loading prior to failing for progressive live
* streams.
*/
public static final int DEFAULT_MIN_LOADABLE_RETRY_COUNT_PROGRESSIVE_LIVE = 6;
/** The default duration for which a track is blacklisted in milliseconds. */
public static final long DEFAULT_TRACK_BLACKLIST_MS = 60000;
private static final int DEFAULT_BEHAVIOR_MIN_LOADABLE_RETRY_COUNT = -1;
private final int minimumLoadableRetryCount;
/**
* Creates an instance with default behavior.
*
* <p>{@link #getMinimumLoadableRetryCount} will return {@link
* #DEFAULT_MIN_LOADABLE_RETRY_COUNT_PROGRESSIVE_LIVE} for {@code dataType} {@link
* C#DATA_TYPE_MEDIA_PROGRESSIVE_LIVE}. For other {@code dataType} values, it will return {@link
* #DEFAULT_MIN_LOADABLE_RETRY_COUNT}.
*/
public DefaultLoadErrorHandlingPolicy() {
this(DEFAULT_BEHAVIOR_MIN_LOADABLE_RETRY_COUNT);
}
/**
* Creates an instance with the given value for {@link #getMinimumLoadableRetryCount(int)}.
*
* @param minimumLoadableRetryCount See {@link #getMinimumLoadableRetryCount}.
*/
public DefaultLoadErrorHandlingPolicy(int minimumLoadableRetryCount) {
this.minimumLoadableRetryCount = minimumLoadableRetryCount;
}
/**
* Blacklists resources whose load error was an {@link InvalidResponseCodeException} with response
* code HTTP 404 or 410. The duration of the blacklisting is {@link #DEFAULT_TRACK_BLACKLIST_MS}.
*/
@Override
public long getBlacklistDurationMsFor(
int dataType, long loadDurationMs, IOException exception, int errorCount) {
if (exception instanceof InvalidResponseCodeException) {
int responseCode = ((InvalidResponseCodeException) exception).responseCode;
return responseCode == 404 // HTTP 404 Not Found.
|| responseCode == 410 // HTTP 410 Gone.
|| responseCode == 416 // HTTP 416 Range Not Satisfiable.
? DEFAULT_TRACK_BLACKLIST_MS
: C.TIME_UNSET;
}
return C.TIME_UNSET;
}
/**
* Retries for any exception that is not a subclass of {@link ParserException}, {@link
* FileNotFoundException} or {@link UnexpectedLoaderException}. The retry delay is calculated as
* {@code Math.min((errorCount - 1) * 1000, 5000)}.
*/
@Override
public long getRetryDelayMsFor(
int dataType, long loadDurationMs, IOException exception, int errorCount) {
return exception instanceof ParserException
|| exception instanceof FileNotFoundException
|| exception instanceof UnexpectedLoaderException
? C.TIME_UNSET
: Math.min((errorCount - 1) * 1000, 5000);
}
/**
* See {@link #DefaultLoadErrorHandlingPolicy()} and {@link #DefaultLoadErrorHandlingPolicy(int)}
* for documentation about the behavior of this method.
*/
@Override
public int getMinimumLoadableRetryCount(int dataType) {
if (minimumLoadableRetryCount == DEFAULT_BEHAVIOR_MIN_LOADABLE_RETRY_COUNT) {
return dataType == C.DATA_TYPE_MEDIA_PROGRESSIVE_LIVE
? DEFAULT_MIN_LOADABLE_RETRY_COUNT_PROGRESSIVE_LIVE
: DEFAULT_MIN_LOADABLE_RETRY_COUNT;
} else {
return minimumLoadableRetryCount;
}
}
}
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