fn read_edts()

in mp4parse/src/lib.rs [4285:4326]

• 42 lines of code
• 7 McCabe index (conditional complexity)

fn read_edts<T: Read>(f: &mut BMFFBox<T>, track: &mut Track) -> Result<()> {
    let mut iter = f.box_iter();
    while let Some(mut b) = iter.next_box()? {
        match b.head.name {
            BoxType::EditListBox => {
                let elst = read_elst(&mut b)?;
                track.looped = Some(elst.looped);
                if elst.edits.is_empty() {
                    debug!("empty edit list");
                    continue;
                }
                let mut empty_duration = 0;
                let mut idx = 0;
                if elst.edits[idx].media_time == -1 {
                    if elst.edits.len() < 2 {
                        debug!("expected additional edit, ignoring edit list");
                        continue;
                    }
                    empty_duration = elst.edits[idx].segment_duration;
                    idx += 1;
                }
                track.empty_duration = Some(MediaScaledTime(empty_duration));
                let media_time = elst.edits[idx].media_time;
                if media_time < 0 {
                    debug!("unexpected negative media time in edit");
                }
                track.edited_duration = Some(MediaScaledTime(elst.edits[idx].segment_duration));
                track.media_time = Some(TrackScaledTime::<u64>(
                    std::cmp::max(0, media_time) as u64,
                    track.id,
                ));
                if elst.edits.len() > 2 {
                    debug!("ignoring edit list with {} entries", elst.edits.len());
                }
                debug!("{:?}", elst);
            }
            _ => skip_box_content(&mut b)?,
        };
        check_parser_state!(b.content);
    }
    Ok(())
}