scuffle_mp4/boxes/types/
dinf.rs

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
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
use std::io;

use bytes::{Buf, Bytes};

use crate::boxes::header::BoxHeader;
use crate::boxes::traits::BoxType;
use crate::boxes::types::dref::Dref;
use crate::boxes::DynBox;

#[derive(Debug, Clone, PartialEq)]
/// Data Information Box
/// ISO/IEC 14496-12:2022(E) 8.7.1
pub struct Dinf {
    pub header: BoxHeader,
    pub dref: Dref,
    pub unknown: Vec<DynBox>,
}

impl Default for Dinf {
    fn default() -> Self {
        Self::new()
    }
}

impl Dinf {
    pub fn new() -> Self {
        Self {
            header: BoxHeader::new(Self::NAME),
            dref: Dref::new(),
            unknown: Vec::new(),
        }
    }
}

impl BoxType for Dinf {
    const NAME: [u8; 4] = *b"dinf";

    fn demux(header: BoxHeader, data: Bytes) -> io::Result<Self> {
        let mut reader = io::Cursor::new(data);

        let mut dref = None;
        let mut unknown = Vec::new();

        while reader.has_remaining() {
            let dyn_box = DynBox::demux(&mut reader)?;

            match dyn_box {
                DynBox::Dref(b) => {
                    dref = Some(*b);
                }
                _ => {
                    unknown.push(dyn_box);
                }
            }
        }

        Ok(Self {
            header,
            dref: dref.unwrap(),
            unknown,
        })
    }

    fn primitive_size(&self) -> u64 {
        self.dref.size() + self.unknown.iter().map(|b| b.size()).sum::<u64>()
    }

    fn primitive_mux<T: io::Write>(&self, writer: &mut T) -> io::Result<()> {
        self.dref.mux(writer)?;

        for b in &self.unknown {
            b.mux(writer)?;
        }

        Ok(())
    }
}