forked from Eyevinn/mp4ff
-
Notifications
You must be signed in to change notification settings - Fork 1
/
edts.go
59 lines (51 loc) · 1.23 KB
/
edts.go
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
package mp4
import (
"fmt"
"io"
)
// EdtsBox - Edit Box (edts - optional)
//
// Contained in: Track Box ("trak")
//
// The edit box maps the presentation timeline to the media-time line
type EdtsBox struct {
Elst []*ElstBox
Children []Box
}
// DecodeEdts - box-specific decode
func DecodeEdts(hdr *boxHeader, startPos uint64, r io.Reader) (Box, error) {
l, err := DecodeContainerChildren(hdr, startPos+8, startPos+hdr.size, r)
if err != nil {
return nil, err
}
e := &EdtsBox{}
e.Children = l
for _, b := range l {
switch b.Type() {
case "elst":
e.Elst = append(e.Elst, b.(*ElstBox))
default:
return nil, fmt.Errorf("Box of type %s in edts", b.Type())
}
}
return e, nil
}
// Type - box type
func (b *EdtsBox) Type() string {
return "edts"
}
// Size - calculated size of box
func (b *EdtsBox) Size() uint64 {
return containerSize(b.Children)
}
// GetChildren - list of child boxes
func (b *EdtsBox) GetChildren() []Box {
return b.Children
}
// Encode - write edts container to w
func (b *EdtsBox) Encode(w io.Writer) error {
return EncodeContainer(b, w)
}
func (b *EdtsBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error {
return ContainerInfo(b, w, specificBoxLevels, indent, indentStep)
}