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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 static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull;
import android.net.Uri;
import android.os.Parcel;
import android.os.Parcelable;
import androidx.annotation.Nullable;
import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions;
import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
/** Defines content to be downloaded. */
public final class DownloadRequest implements Parcelable {
/** Thrown when the encoded request data belongs to an unsupported request type. */
public static class UnsupportedRequestException extends IOException {}
/** Type for progressive downloads. */
public static final String TYPE_PROGRESSIVE = "progressive";
/** Type for DASH downloads. */
public static final String TYPE_DASH = "dash";
/** Type for HLS downloads. */
public static final String TYPE_HLS = "hls";
/** Type for SmoothStreaming downloads. */
public static final String TYPE_SS = "ss";
/** The unique content id. */
public final String id;
/** The type of the request. */
public final String type;
/** The uri being downloaded. */
public final Uri uri;
/** Stream keys to be downloaded. If empty, all streams will be downloaded. */
public final List<StreamKey> streamKeys;
/**
* Custom key for cache indexing, or null. Must be null for DASH, HLS and SmoothStreaming
* downloads.
*/
@Nullable public final String customCacheKey;
/** Application defined data associated with the download. May be empty. */
public final byte[] data;
/**
* @param id See {@link #id}.
* @param type See {@link #type}.
* @param uri See {@link #uri}.
* @param streamKeys See {@link #streamKeys}.
* @param customCacheKey See {@link #customCacheKey}.
* @param data See {@link #data}.
*/
public DownloadRequest(
String id,
String type,
Uri uri,
List<StreamKey> streamKeys,
@Nullable String customCacheKey,
@Nullable byte[] data) {
if (TYPE_DASH.equals(type) || TYPE_HLS.equals(type) || TYPE_SS.equals(type)) {
Assertions.checkArgument(
customCacheKey == null, "customCacheKey must be null for type: " + type);
}
this.id = id;
this.type = type;
this.uri = uri;
ArrayList<StreamKey> mutableKeys = new ArrayList<>(streamKeys);
Collections.sort(mutableKeys);
this.streamKeys = Collections.unmodifiableList(mutableKeys);
this.customCacheKey = customCacheKey;
this.data = data != null ? Arrays.copyOf(data, data.length) : Util.EMPTY_BYTE_ARRAY;
}
/* package */ DownloadRequest(Parcel in) {
id = castNonNull(in.readString());
type = castNonNull(in.readString());
uri = Uri.parse(castNonNull(in.readString()));
int streamKeyCount = in.readInt();
ArrayList<StreamKey> mutableStreamKeys = new ArrayList<>(streamKeyCount);
for (int i = 0; i < streamKeyCount; i++) {
mutableStreamKeys.add(in.readParcelable(StreamKey.class.getClassLoader()));
}
streamKeys = Collections.unmodifiableList(mutableStreamKeys);
customCacheKey = in.readString();
data = castNonNull(in.createByteArray());
}
/**
* Returns a copy with the specified ID.
*
* @param id The ID of the copy.
* @return The copy with the specified ID.
*/
public DownloadRequest copyWithId(String id) {
return new DownloadRequest(id, type, uri, streamKeys, customCacheKey, data);
}
/**
* Returns the result of merging {@code newRequest} into this request. The requests must have the
* same {@link #id} and {@link #type}.
*
* <p>If the requests have different {@link #uri}, {@link #customCacheKey} and {@link #data}
* values, then those from the request being merged are included in the result.
*
* @param newRequest The request being merged.
* @return The merged result.
* @throws IllegalArgumentException If the requests do not have the same {@link #id} and {@link
* #type}.
*/
public DownloadRequest copyWithMergedRequest(DownloadRequest newRequest) {
Assertions.checkArgument(id.equals(newRequest.id));
Assertions.checkArgument(type.equals(newRequest.type));
List<StreamKey> mergedKeys;
if (streamKeys.isEmpty() || newRequest.streamKeys.isEmpty()) {
// If either streamKeys is empty then all streams should be downloaded.
mergedKeys = Collections.emptyList();
} else {
mergedKeys = new ArrayList<>(streamKeys);
for (int i = 0; i < newRequest.streamKeys.size(); i++) {
StreamKey newKey = newRequest.streamKeys.get(i);
if (!mergedKeys.contains(newKey)) {
mergedKeys.add(newKey);
}
}
}
return new DownloadRequest(
id, type, newRequest.uri, mergedKeys, newRequest.customCacheKey, newRequest.data);
}
@Override
public String toString() {
return type + ":" + id;
}
@Override
public boolean equals(@Nullable Object o) {
if (!(o instanceof DownloadRequest)) {
return false;
}
DownloadRequest that = (DownloadRequest) o;
return id.equals(that.id)
&& type.equals(that.type)
&& uri.equals(that.uri)
&& streamKeys.equals(that.streamKeys)
&& Util.areEqual(customCacheKey, that.customCacheKey)
&& Arrays.equals(data, that.data);
}
@Override
public final int hashCode() {
int result = type.hashCode();
result = 31 * result + id.hashCode();
result = 31 * result + type.hashCode();
result = 31 * result + uri.hashCode();
result = 31 * result + streamKeys.hashCode();
result = 31 * result + (customCacheKey != null ? customCacheKey.hashCode() : 0);
result = 31 * result + Arrays.hashCode(data);
return result;
}
// Parcelable implementation.
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(id);
dest.writeString(type);
dest.writeString(uri.toString());
dest.writeInt(streamKeys.size());
for (int i = 0; i < streamKeys.size(); i++) {
dest.writeParcelable(streamKeys.get(i), /* parcelableFlags= */ 0);
}
dest.writeString(customCacheKey);
dest.writeByteArray(data);
}
public static final Parcelable.Creator<DownloadRequest> CREATOR =
new Parcelable.Creator<DownloadRequest>() {
@Override
public DownloadRequest createFromParcel(Parcel in) {
return new DownloadRequest(in);
}
@Override
public DownloadRequest[] newArray(int size) {
return new DownloadRequest[size];
}
};
}
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