scuffle_mp4/boxes/types/
nmhd.rs

1use std::io;
2
3use bytes::Bytes;
4
5use crate::boxes::header::{BoxHeader, FullBoxHeader};
6use crate::boxes::traits::BoxType;
7
8#[derive(Debug, Clone, PartialEq)]
9/// Null media header box
10/// ISO/IEC 14496-12:2022(E) 8.4.5.2
11pub struct Nmhd {
12    pub header: FullBoxHeader,
13}
14
15impl BoxType for Nmhd {
16    const NAME: [u8; 4] = *b"nmhd";
17
18    fn demux(header: BoxHeader, data: Bytes) -> io::Result<Self> {
19        let mut reader = io::Cursor::new(data);
20
21        let header = FullBoxHeader::demux(header, &mut reader)?;
22
23        Ok(Self { header })
24    }
25
26    fn primitive_size(&self) -> u64 {
27        self.header.size()
28    }
29
30    fn primitive_mux<T: io::Write>(&self, writer: &mut T) -> io::Result<()> {
31        self.header.mux(writer)?;
32
33        Ok(())
34    }
35
36    fn validate(&self) -> io::Result<()> {
37        if self.header.version != 0 {
38            return Err(io::Error::new(io::ErrorKind::InvalidData, "nmhd box version must be 0"));
39        }
40
41        Ok(())
42    }
43}
scuffle_mp4/boxes/types/nmhd.rs

scuffle_mp4/boxes/types/
nmhd.rs
