func mdhdRead(fs *Mp4FileSpec, fp *Mp4FilePro, offset int64) error {
var err error
fs.MoovAtomInstance.TrakAtomInstance[trakNum].MdiaAtomInstance.MdhdAtomInstance.
Offset = offset
fs.MoovAtomInstance.TrakAtomInstance[trakNum].MdiaAtomInstance.MdhdAtomInstance.
IsFullBox = false
err = fp.Mp4Seek(offset, 0)
if err != nil {
log.Fatalln(err.Error())
return err
}
size, _, err := fp.Mp4ReadHeader()
if err != nil {
log.Fatalln(err.Error())
return err
}
sizeInt := util.Bytes2Int(size)
fs.MoovAtomInstance.TrakAtomInstance[trakNum].MdiaAtomInstance.MdhdAtomInstance.
Size = sizeInt
err = fp.Mp4Seek(offset, 0)
if err != nil {
log.Fatalln(err.Error())
return err
}
buf, err := fp.Mp4Read(fs.MoovAtomInstance.TrakAtomInstance[trakNum].MdiaAtomInstance.
MdhdAtomInstance.Size)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].MdiaAtomInstance.MdhdAtomInstance.
AllBytes = buf
err = fp.Mp4Seek(offset+8, 0)
if err != nil {
log.Fatalln(err.Error())
return err
}
size, err = fp.Mp4Read(1)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].MdiaAtomInstance.MdhdAtomInstance.
Version = uint8(size[0])
size, err = fp.Mp4Read(3)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].MdiaAtomInstance.MdhdAtomInstance.
Flag = util.Byte32Uint32(size, 0)
size, err = fp.Mp4Read(4)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].MdiaAtomInstance.MdhdAtomInstance.
CreationTime = util.Byte42Uint32(size, 0)
size, err = fp.Mp4Read(4)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].MdiaAtomInstance.MdhdAtomInstance.
ModificationTime = util.Byte42Uint32(size, 0)
size, err = fp.Mp4Read(4)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].MdiaAtomInstance.MdhdAtomInstance.
Timescale = util.Byte42Uint32(size, 0)
size, err = fp.Mp4Read(4)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].MdiaAtomInstance.MdhdAtomInstance.
Duration = util.Byte42Uint32(size, 0)
size, err = fp.Mp4Read(2)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].MdiaAtomInstance.MdhdAtomInstance.
Language = util.Byte22Uint16(size, 0)
/*
size, err = fp.Mp4Read(2)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].MdiaAtomInstance.MdhdAtomInstance.
Quality = util.Bytes2Int(size)
*/
return nil
}
func tkhdRead(fs *Mp4FileSpec, fp *Mp4FilePro, offset int64) error {
var err error
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.Offset = offset
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.IsFullBox = false
err = fp.Mp4Seek(offset, 0)
if err != nil {
log.Fatalln(err.Error())
return err
}
size, _, err := fp.Mp4ReadHeader()
if err != nil {
log.Fatalln(err.Error())
return err
}
sizeInt := util.Bytes2Int(size)
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.Size = sizeInt
err = fp.Mp4Seek(offset, 0)
if err != nil {
log.Fatalln(err.Error())
return err
}
buf, err := fp.Mp4Read(fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.Size)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.AllBytes = buf
size, err = fp.Mp4Read(1)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.Version = uint8(size[0])
size, err = fp.Mp4Read(3)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.Flag =
util.Byte32Uint32(size, 0)
size, err = fp.Mp4Read(4)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.CreationTime =
util.Byte42Uint32(size, 0)
size, err = fp.Mp4Read(4)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.ModificationTime =
util.Byte42Uint32(size, 0)
size, err = fp.Mp4Read(4)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.TrakID =
util.Byte42Uint32(size, 0)
size, err = fp.Mp4Read(4)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.Reserved1 =
util.Byte42Uint32(size, 0)
size, err = fp.Mp4Read(4)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.Duration =
util.Byte42Uint32(size, 0)
size, err = fp.Mp4Read(8)
if err != nil {
log.Fatalln(err.Error())
return err
}
//fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.Reserved2 =
//util.Byte82Uint32(size, 0)
size, err = fp.Mp4Read(2)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.Layer =
util.Byte22Uint16(size, 0)
size, err = fp.Mp4Read(2)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.AlternateGroup =
util.Bytes2Int(size)
size, err = fp.Mp4Read(2)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.Volume =
util.Byte22Uint16(size, 0)
size, err = fp.Mp4Read(2)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.Reserved3 =
util.Byte22Uint16(size, 0)
size, err = fp.Mp4Read(36)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.MatrixStructure = size
size, err = fp.Mp4Read(4)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.TrackWidth =
util.Byte42Uint32(size, 0)
size, err = fp.Mp4Read(4)
if err != nil {
log.Fatalln(err.Error())
return err
}
fs.MoovAtomInstance.TrakAtomInstance[trakNum].TkhdAtomInstance.TrackHeight =
util.Byte42Uint32(size, 0)
return nil
}
