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/*
* Copyright (C) 2017 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.offline;
import androidx.annotation.Nullable;
import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
import java.io.IOException;
/** Downloads and removes a piece of content. */
public interface Downloader {
/** Receives progress updates during download operations. */
interface ProgressListener {
/**
* Called when progress is made during a download operation.
*
* @param contentLength The length of the content in bytes, or {@link C#LENGTH_UNSET} if
* unknown.
* @param bytesDownloaded The number of bytes that have been downloaded.
* @param percentDownloaded The percentage of the content that has been downloaded, or {@link
* C#PERCENTAGE_UNSET}.
*/
void onProgress(long contentLength, long bytesDownloaded, float percentDownloaded);
}
/**
* Downloads the content.
*
* @param progressListener A listener to receive progress updates, or {@code null}.
* @throws DownloadException Thrown if the content cannot be downloaded.
* @throws InterruptedException If the thread has been interrupted.
* @throws IOException Thrown when there is an io error while downloading.
*/
void download(@Nullable ProgressListener progressListener)
throws InterruptedException, IOException;
/** Cancels the download operation and prevents future download operations from running. */
void cancel();
/**
* Removes the content.
*
* @throws InterruptedException Thrown if the thread was interrupted.
*/
void remove() throws InterruptedException;
}
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