blob: c51e8e0c37d1693db0b640a015dc3168ba0db2d0 (
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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/*
* Copyright 2012 Sebastian Annies, Hamburg
*
* 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 com.googlecode.mp4parser.authoring.tracks;
import com.coremedia.iso.boxes.*;
import com.googlecode.mp4parser.authoring.Track;
import com.googlecode.mp4parser.authoring.TrackMetaData;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
/**
* Changes the timescale of a track by wrapping the track.
*/
public class DivideTimeScaleTrack implements Track {
Track source;
private int timeScaleDivisor;
public DivideTimeScaleTrack(Track source, int timeScaleDivisor) {
this.source = source;
this.timeScaleDivisor = timeScaleDivisor;
}
public SampleDescriptionBox getSampleDescriptionBox() {
return source.getSampleDescriptionBox();
}
public List<TimeToSampleBox.Entry> getDecodingTimeEntries() {
return adjustTts();
}
public List<CompositionTimeToSample.Entry> getCompositionTimeEntries() {
return adjustCtts();
}
public long[] getSyncSamples() {
return source.getSyncSamples();
}
public List<SampleDependencyTypeBox.Entry> getSampleDependencies() {
return source.getSampleDependencies();
}
public TrackMetaData getTrackMetaData() {
TrackMetaData trackMetaData = (TrackMetaData) source.getTrackMetaData().clone();
trackMetaData.setTimescale(source.getTrackMetaData().getTimescale() / this.timeScaleDivisor);
return trackMetaData;
}
public String getHandler() {
return source.getHandler();
}
public boolean isEnabled() {
return source.isEnabled();
}
public boolean isInMovie() {
return source.isInMovie();
}
public boolean isInPreview() {
return source.isInPreview();
}
public boolean isInPoster() {
return source.isInPoster();
}
public List<ByteBuffer> getSamples() {
return source.getSamples();
}
List<CompositionTimeToSample.Entry> adjustCtts() {
List<CompositionTimeToSample.Entry> origCtts = this.source.getCompositionTimeEntries();
if (origCtts != null) {
List<CompositionTimeToSample.Entry> entries2 = new ArrayList<CompositionTimeToSample.Entry>(origCtts.size());
for (CompositionTimeToSample.Entry entry : origCtts) {
entries2.add(new CompositionTimeToSample.Entry(entry.getCount(), entry.getOffset() / timeScaleDivisor));
}
return entries2;
} else {
return null;
}
}
List<TimeToSampleBox.Entry> adjustTts() {
List<TimeToSampleBox.Entry> origTts = source.getDecodingTimeEntries();
LinkedList<TimeToSampleBox.Entry> entries2 = new LinkedList<TimeToSampleBox.Entry>();
for (TimeToSampleBox.Entry e : origTts) {
entries2.add(new TimeToSampleBox.Entry(e.getCount(), e.getDelta() / timeScaleDivisor));
}
return entries2;
}
public Box getMediaHeaderBox() {
return source.getMediaHeaderBox();
}
public SubSampleInformationBox getSubsampleInformationBox() {
return source.getSubsampleInformationBox();
}
@Override
public String toString() {
return "MultiplyTimeScaleTrack{" +
"source=" + source +
'}';
}
}
|
