mp4san/parse/
moov.rs

1#![allow(missing_docs)]
2
3use crate::error::Result;
4
5use super::error::{ParseResultExt, WhileParsingField};
6use super::{BoxType, Boxes, BoxesValidator, ParseBox, ParseError, ParsedBox, TrakBox};
7
8#[derive(Clone, Debug, ParseBox, ParsedBox)]
9#[box_type = "moov"]
10pub struct MoovBox {
11    children: Boxes<MoovChildrenValidator>,
12}
13
14pub(crate) struct MoovChildrenValidator;
15
16const NAME: BoxType = BoxType::MOOV;
17
18impl MoovBox {
19    #[cfg(test)]
20    pub(crate) fn with_children<C: Into<Boxes<MoovChildrenValidator>>>(children: C) -> Self {
21        Self { children: children.into() }
22    }
23
24    pub fn traks(&mut self) -> impl Iterator<Item = Result<&mut TrakBox, ParseError>> + '_ {
25        self.children
26            .get_mut()
27            .map(|result| result.while_parsing_child(NAME, BoxType::TRAK))
28    }
29}
30
31impl BoxesValidator for MoovChildrenValidator {
32    fn validate<V>(children: &Boxes<V>) -> Result<(), ParseError> {
33        ensure_attach!(
34            children.box_types().any(|box_type| box_type == BoxType::TRAK),
35            ParseError::MissingRequiredBox(BoxType::TRAK),
36            WhileParsingField(NAME, "children"),
37        );
38        Ok(())
39    }
40}
41
42#[cfg(test)]
43mod test {
44    use bytes::BytesMut;
45
46    use crate::parse::Mp4Box;
47
48    use super::*;
49
50    fn test_trak() -> Mp4Box<TrakBox> {
51        Mp4Box::with_data(TrakBox::with_children(vec![]).into()).unwrap()
52    }
53
54    #[test]
55    fn roundtrip() {
56        let mut data = BytesMut::new();
57        MoovBox::with_children(vec![test_trak().into()]).put_buf(&mut data);
58        MoovBox::parse(&mut data).unwrap();
59    }
60
61    #[test]
62    fn no_traks() {
63        let mut data = BytesMut::new();
64        MoovBox::with_children(vec![]).put_buf(&mut data);
65        let err = MoovBox::parse(&mut data).unwrap_err();
66        assert!(
67            matches!(err.get_ref(), ParseError::MissingRequiredBox(BoxType::TRAK)),
68            "{err}",
69        );
70    }
71}
mp4san/parse/moov.rs

mp4san/parse/
moov.rs
