blob: 39872605781078dbdbb00dce4833764bdc00fc29 (
plain)
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
|
/*
* 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.source.chunk;
import java.util.NoSuchElementException;
/**
* Base class for {@link MediaChunkIterator}s. Handles {@link #next()} and {@link #isEnded()}, and
* provides a bounds check for child classes.
*/
public abstract class BaseMediaChunkIterator implements MediaChunkIterator {
private final long fromIndex;
private final long toIndex;
private long currentIndex;
/**
* Creates base iterator.
*
* @param fromIndex The first available index.
* @param toIndex The last available index.
*/
@SuppressWarnings("method.invocation.invalid")
public BaseMediaChunkIterator(long fromIndex, long toIndex) {
this.fromIndex = fromIndex;
this.toIndex = toIndex;
reset();
}
@Override
public boolean isEnded() {
return currentIndex > toIndex;
}
@Override
public boolean next() {
currentIndex++;
return !isEnded();
}
@Override
public void reset() {
currentIndex = fromIndex - 1;
}
/**
* Verifies that the iterator points to a valid element.
*
* @throws NoSuchElementException If the iterator does not point to a valid element.
*/
protected final void checkInBounds() {
if (currentIndex < fromIndex || currentIndex > toIndex) {
throw new NoSuchElementException();
}
}
/** Returns the current index this iterator is pointing to. */
protected final long getCurrentIndex() {
return currentIndex;
}
}
|
