/
MediaInformation.go
62 lines (58 loc) · 1.3 KB
/
MediaInformation.go
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package sofia
import (
"errors"
"io"
)
// ISO/IEC 14496-12
// aligned(8) class MediaInformationBox extends Box('minf') {
// }
type MediaInformation struct {
BoxHeader BoxHeader
Boxes []Box
SampleTable SampleTable
}
func (m *MediaInformation) read(r io.Reader, size int64) error {
r = io.LimitReader(r, size)
for {
var head BoxHeader
err := head.read(r)
if err == io.EOF {
return nil
} else if err != nil {
return err
}
switch head.debug() {
case "stbl":
_, size := head.get_size()
m.SampleTable.BoxHeader = head
err := m.SampleTable.read(r, size)
if err != nil {
return err
}
case "dinf", // Roku
"smhd", // Roku
"vmhd": // Roku
object := Box{BoxHeader: head}
err := object.read(r)
if err != nil {
return err
}
m.Boxes = append(m.Boxes, object)
default:
return errors.New("MediaInformation.read")
}
}
}
func (m MediaInformation) write(w io.Writer) error {
err := m.BoxHeader.write(w)
if err != nil {
return err
}
for _, object := range m.Boxes {
err := object.write(w)
if err != nil {
return err
}
}
return m.SampleTable.write(w)
}