1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*
* Copyright (C) 2016 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;
/**
* A listener of data transfer events.
*
* <p>A transfer usually progresses through multiple steps:
*
* <ol>
* <li>Initializing the underlying resource (e.g. opening a HTTP connection). {@link
* #onTransferInitializing(DataSource, DataSpec, boolean)} is called before the initialization
* starts.
* <li>Starting the transfer after successfully initializing the resource. {@link
* #onTransferStart(DataSource, DataSpec, boolean)} is called. Note that this only happens if
* the initialization was successful.
* <li>Transferring data. {@link #onBytesTransferred(DataSource, DataSpec, boolean, int)} is
* called frequently during the transfer to indicate progress.
* <li>Closing the transfer and the underlying resource. {@link #onTransferEnd(DataSource,
* DataSpec, boolean)} is called. Note that each {@link #onTransferStart(DataSource, DataSpec,
* boolean)} will have exactly one corresponding call to {@link #onTransferEnd(DataSource,
* DataSpec, boolean)}.
* </ol>
*/
public interface TransferListener {
/**
* Called when a transfer is being initialized.
*
* @param source The source performing the transfer.
* @param dataSpec Describes the data for which the transfer is initialized.
* @param isNetwork Whether the data is transferred through a network.
*/
void onTransferInitializing(DataSource source, DataSpec dataSpec, boolean isNetwork);
/**
* Called when a transfer starts.
*
* @param source The source performing the transfer.
* @param dataSpec Describes the data being transferred.
* @param isNetwork Whether the data is transferred through a network.
*/
void onTransferStart(DataSource source, DataSpec dataSpec, boolean isNetwork);
/**
* Called incrementally during a transfer.
*
* @param source The source performing the transfer.
* @param dataSpec Describes the data being transferred.
* @param isNetwork Whether the data is transferred through a network.
* @param bytesTransferred The number of bytes transferred since the previous call to this method
*/
void onBytesTransferred(
DataSource source, DataSpec dataSpec, boolean isNetwork, int bytesTransferred);
/**
* Called when a transfer ends.
*
* @param source The source performing the transfer.
* @param dataSpec Describes the data being transferred.
* @param isNetwork Whether the data is transferred through a network.
*/
void onTransferEnd(DataSource source, DataSpec dataSpec, boolean isNetwork);
}
|
