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Movie.go
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/
Movie.go
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package sofia
import (
"errors"
"io"
)
// ISO/IEC 14496-12
// aligned(8) class MovieBox extends Box('moov') {
// }
type Movie struct {
BoxHeader BoxHeader
Boxes []*Box
Protection []ProtectionSystemSpecificHeader
Track Track
}
func (m *Movie) 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 "iods", // Roku
"meta", // Paramount
"mvex", // Roku
"mvhd": // Roku
object := Box{BoxHeader: head}
err := object.read(r)
if err != nil {
return err
}
m.Boxes = append(m.Boxes, &object)
case "pssh":
protect := ProtectionSystemSpecificHeader{BoxHeader: head}
err := protect.read(r)
if err != nil {
return err
}
m.Protection = append(m.Protection, protect)
case "trak":
_, size := head.get_size()
m.Track.BoxHeader = head
err := m.Track.read(r, size)
if err != nil {
return err
}
default:
return errors.New("Movie.read")
}
}
}
func (m Movie) 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
}
}
for _, protect := range m.Protection {
err := protect.write(w)
if err != nil {
return err
}
}
return m.Track.write(w)
}