async_mp4/mp4box/
dref.rs

1use crate::{full_box};
2use crate::bytes_read::{Mp4Readable, ReadMp4};
3use crate::error::{MP4Error};
4use crate::header::BoxHeader;
5use crate::mp4box::box_trait::{BoxRead, BoxWrite, IBox};
6use crate::mp4box::url::UrlBox;
7use crate::mp4box::urn::UrnBox;
8use crate::types::array::Mp4Array;
9use async_trait::async_trait;
10use DataEntryBox::{Unknown, Urn};
11use crate::bytes_write::{Mp4Writable, WriteMp4};
12use crate::mp4box::box_unknown::UnknownBox;
13use crate::mp4box::dref::DataEntryBox::Url;
14
15#[derive(Debug, Clone, Eq, PartialEq, Hash)]
16pub enum DataEntryBox {
17    Url(UrlBox),
18    Urn(UrnBox),
19    Unknown(UnknownBox)
20}
21
22#[async_trait]
23impl Mp4Readable for DataEntryBox {
24    async fn read<R: ReadMp4>(reader: &mut R) -> Result<Self, MP4Error> {
25        let header: BoxHeader = reader.read().await?;
26        Ok(match header.id {
27            UrlBox::ID => Url(<UrlBox as BoxRead>::read(header, reader).await?),
28            UrnBox::ID => Urn(<UrnBox as BoxRead>::read(header, reader).await?),
29            _ => Unknown(<UnknownBox as BoxRead>::read(header, reader).await?)
30        })
31    }
32}
33
34impl Mp4Writable for DataEntryBox {
35    fn byte_size(&self) -> usize {
36        match self {
37            Url(it) =>  it.byte_size(),
38            Urn(it ) => it.byte_size(),
39            Unknown(it) => it.byte_size()
40        }
41    }
42
43    fn write<W: WriteMp4>(&self, writer: &mut W) -> Result<usize, MP4Error> {
44        match self {
45            Url(it) => it.write(writer),
46            Urn(it ) => it.write(writer),
47            Unknown(it) => it.write(writer),
48        }
49    }
50}
51
52full_box! {
53    box (b"dref", Dref, DrefBox, u32) data {
54        entries: Mp4Array<u32, DataEntryBox>
55    }
56}
57
58impl Default for Dref {
59    fn default() -> Self {
60        Self {
61            entries: vec![Url(UrlBox::default())].into()
62        }
63    }
64}
async_mp4/mp4box/dref.rs

async_mp4/mp4box/
dref.rs
