mp4-rust/src/mp4box/udta.rs

use std::io::{Read, Seek};

use serde::Serialize;

use crate::mp4box::meta::MetaBox;
use crate::mp4box::*;

#[derive(Debug, Clone, PartialEq, Eq, Default, Serialize)]
pub struct UdtaBox {
    #[serde(skip_serializing_if = "Option::is_none")]
    pub meta: Option<MetaBox>,
}

impl<R: Read + Seek> ReadBox<&mut R> for UdtaBox {
    fn read_box(reader: &mut R, size: u64) -> Result<Self> {
        let start = box_start(reader)?;

        let mut meta = None;

        let mut current = reader.seek(SeekFrom::Current(0))?;
        let end = start + size;
        while current < end {
            // Get box header.
            let header = BoxHeader::read(reader)?;
            let BoxHeader { name, size: s } = header;

            match name {
                BoxType::MetaBox => {
                    meta = Some(MetaBox::read_box(reader, s)?);
                }
                _ => {
                    // XXX warn!()
                    skip_box(reader, s)?;
                }
            }

            current = reader.seek(SeekFrom::Current(0))?;
        }

        skip_bytes_to(reader, start + size)?;

        Ok(UdtaBox { meta })
    }
}