2020-07-31 17:12:26 +00:00
|
|
|
use std::io::{Seek, SeekFrom, Read, Write};
|
2020-07-28 16:36:17 +00:00
|
|
|
|
|
|
|
use crate::*;
|
2020-07-31 17:12:26 +00:00
|
|
|
use crate::atoms::*;
|
2020-07-28 16:36:17 +00:00
|
|
|
use crate::atoms::{mvhd::MvhdBox, trak::TrakBox};
|
|
|
|
|
|
|
|
|
|
|
|
#[derive(Debug, Default)]
|
|
|
|
pub struct MoovBox {
|
|
|
|
pub mvhd: MvhdBox,
|
|
|
|
pub traks: Vec<TrakBox>,
|
|
|
|
}
|
|
|
|
|
|
|
|
impl MoovBox {
|
|
|
|
pub(crate) fn new() -> MoovBox {
|
|
|
|
Default::default()
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl Mp4Box for MoovBox {
|
2020-07-31 17:12:26 +00:00
|
|
|
fn box_type() -> BoxType {
|
2020-07-28 16:36:17 +00:00
|
|
|
BoxType::MoovBox
|
|
|
|
}
|
|
|
|
|
|
|
|
fn box_size(&self) -> u64 {
|
|
|
|
let mut size = HEADER_SIZE + self.mvhd.box_size();
|
|
|
|
for trak in self.traks.iter() {
|
|
|
|
size += trak.box_size();
|
|
|
|
}
|
|
|
|
size
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-07-31 17:12:26 +00:00
|
|
|
impl<R: Read + Seek> ReadBox<&mut R> for MoovBox {
|
|
|
|
fn read_box(reader: &mut R, size: u64) -> Result<Self> {
|
|
|
|
let start = get_box_start(reader)?;
|
2020-07-28 16:36:17 +00:00
|
|
|
|
2020-07-31 17:12:26 +00:00
|
|
|
let mut moov = MoovBox::new();
|
2020-07-28 16:36:17 +00:00
|
|
|
|
2020-07-31 17:12:26 +00:00
|
|
|
let mut current = reader.seek(SeekFrom::Current(0))?;
|
|
|
|
let end = start + size;
|
|
|
|
while current < end {
|
2020-07-28 16:36:17 +00:00
|
|
|
// Get box header.
|
2020-07-31 17:12:26 +00:00
|
|
|
let header = BoxHeader::read(reader)?;
|
2020-07-28 16:36:17 +00:00
|
|
|
let BoxHeader{ name, size: s } = header;
|
|
|
|
|
|
|
|
match name {
|
|
|
|
BoxType::MvhdBox => {
|
|
|
|
moov.mvhd = MvhdBox::read_box(reader, s)?;
|
|
|
|
}
|
|
|
|
BoxType::TrakBox => {
|
2020-07-31 17:12:26 +00:00
|
|
|
let mut trak = TrakBox::read_box(reader, s)?;
|
|
|
|
trak.id = moov.traks.len() as u32 + 1;
|
2020-07-28 16:36:17 +00:00
|
|
|
moov.traks.push(trak);
|
|
|
|
}
|
|
|
|
BoxType::UdtaBox => {
|
2020-07-31 17:12:26 +00:00
|
|
|
// XXX warn!()
|
|
|
|
skip_box(reader, s)?;
|
|
|
|
}
|
|
|
|
_ => {
|
|
|
|
// XXX warn!()
|
|
|
|
skip_box(reader, s)?;
|
2020-07-28 16:36:17 +00:00
|
|
|
}
|
|
|
|
}
|
2020-07-31 17:12:26 +00:00
|
|
|
|
|
|
|
current = reader.seek(SeekFrom::Current(0))?;
|
2020-07-28 16:36:17 +00:00
|
|
|
}
|
2020-07-31 17:12:26 +00:00
|
|
|
|
|
|
|
skip_read_to(reader, start + size)?;
|
|
|
|
|
2020-07-28 16:36:17 +00:00
|
|
|
Ok(moov)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-07-31 17:12:26 +00:00
|
|
|
impl<W: Write> WriteBox<&mut W> for MoovBox {
|
|
|
|
fn write_box(&self, writer: &mut W) -> Result<u64> {
|
2020-07-28 16:36:17 +00:00
|
|
|
let size = self.box_size();
|
2020-07-31 17:12:26 +00:00
|
|
|
BoxHeader::new(Self::box_type(), size).write(writer)?;
|
2020-07-28 16:36:17 +00:00
|
|
|
|
|
|
|
self.mvhd.write_box(writer)?;
|
|
|
|
for trak in self.traks.iter() {
|
|
|
|
trak.write_box(writer)?;
|
|
|
|
}
|
|
|
|
Ok(0)
|
|
|
|
}
|
|
|
|
}
|