scuffle_mp4/boxes/types/
moof.rs

use std::io;

use bytes::{Buf, Bytes};

use super::mfhd::Mfhd;
use super::traf::Traf;
use crate::boxes::header::BoxHeader;
use crate::boxes::traits::BoxType;
use crate::boxes::DynBox;

#[derive(Debug, Clone, PartialEq)]
/// Movie Fragment Box
/// ISO/IEC 14496-12:2022(E) - 8.8.4
pub struct Moof {
    pub header: BoxHeader,
    pub mfhd: Mfhd,
    pub traf: Vec<Traf>,
    pub unknown: Vec<DynBox>,
}

impl Moof {
    pub fn new(mfhd: Mfhd, traf: Vec<Traf>) -> Self {
        Self {
            header: BoxHeader::new(Self::NAME),
            mfhd,
            traf,
            unknown: Vec::new(),
        }
    }
}

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

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

        let mut unknown = Vec::new();

        let mut traf = Vec::new();
        let mut mfhd = None;

        while reader.has_remaining() {
            let box_ = DynBox::demux(&mut reader)?;
            match box_ {
                DynBox::Mfhd(b) => {
                    mfhd = Some(*b);
                }
                DynBox::Traf(b) => {
                    traf.push(*b);
                }
                _ => unknown.push(box_),
            }
        }

        let mfhd = mfhd.ok_or_else(|| io::Error::new(io::ErrorKind::InvalidData, "moof box must contain mfhd box"))?;

        Ok(Self {
            header,
            mfhd,
            traf,
            unknown,
        })
    }

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

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

        for box_ in &self.traf {
            box_.mux(writer)?;
        }

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

        Ok(())
    }
}
scuffle_mp4/boxes/types/moof.rs

scuffle_mp4/boxes/types/
moof.rs
