mirror of
https://github.com/alfg/mp4-rust.git
synced 2024-05-20 01:08:06 +00:00
9c0f6534bd
* Add Tfdt box parsing * Derive Default for TfdtBox * Derive Eq for TfdtBox
138 lines
3.6 KiB
Rust
138 lines
3.6 KiB
Rust
use byteorder::{BigEndian, ReadBytesExt, WriteBytesExt};
|
|
use serde::Serialize;
|
|
use std::io::{Read, Seek, Write};
|
|
|
|
use crate::mp4box::*;
|
|
|
|
#[derive(Debug, Clone, PartialEq, Eq, Default, Serialize)]
|
|
pub struct TfdtBox {
|
|
pub version: u8,
|
|
pub flags: u32,
|
|
pub base_media_decode_time: u64,
|
|
}
|
|
|
|
impl TfdtBox {
|
|
pub fn get_type(&self) -> BoxType {
|
|
BoxType::TfdtBox
|
|
}
|
|
|
|
pub fn get_size(&self) -> u64 {
|
|
let mut sum = HEADER_SIZE + HEADER_EXT_SIZE;
|
|
if self.version == 1 {
|
|
sum += 8;
|
|
} else {
|
|
sum += 4;
|
|
}
|
|
sum
|
|
}
|
|
}
|
|
|
|
impl Mp4Box for TfdtBox {
|
|
fn box_type(&self) -> BoxType {
|
|
self.get_type()
|
|
}
|
|
|
|
fn box_size(&self) -> u64 {
|
|
self.get_size()
|
|
}
|
|
|
|
fn to_json(&self) -> Result<String> {
|
|
Ok(serde_json::to_string(&self).unwrap())
|
|
}
|
|
|
|
fn summary(&self) -> Result<String> {
|
|
let s = format!("base_media_decode_time={}", self.base_media_decode_time);
|
|
Ok(s)
|
|
}
|
|
}
|
|
|
|
impl<R: Read + Seek> ReadBox<&mut R> for TfdtBox {
|
|
fn read_box(reader: &mut R, size: u64) -> Result<Self> {
|
|
let start = box_start(reader)?;
|
|
|
|
let (version, flags) = read_box_header_ext(reader)?;
|
|
|
|
let base_media_decode_time = if version == 1 {
|
|
reader.read_u64::<BigEndian>()?
|
|
} else if version == 0 {
|
|
reader.read_u32::<BigEndian>()? as u64
|
|
} else {
|
|
return Err(Error::InvalidData("version must be 0 or 1"));
|
|
};
|
|
|
|
skip_bytes_to(reader, start + size)?;
|
|
|
|
Ok(TfdtBox {
|
|
version,
|
|
flags,
|
|
base_media_decode_time,
|
|
})
|
|
}
|
|
}
|
|
|
|
impl<W: Write> WriteBox<&mut W> for TfdtBox {
|
|
fn write_box(&self, writer: &mut W) -> Result<u64> {
|
|
let size = self.box_size();
|
|
BoxHeader::new(self.box_type(), size).write(writer)?;
|
|
|
|
write_box_header_ext(writer, self.version, self.flags)?;
|
|
|
|
if self.version == 1 {
|
|
writer.write_u64::<BigEndian>(self.base_media_decode_time)?;
|
|
} else if self.version == 0 {
|
|
writer.write_u32::<BigEndian>(self.base_media_decode_time as u32)?;
|
|
} else {
|
|
return Err(Error::InvalidData("version must be 0 or 1"));
|
|
}
|
|
|
|
Ok(size)
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
use crate::mp4box::BoxHeader;
|
|
use std::io::Cursor;
|
|
|
|
#[test]
|
|
fn test_tfdt32() {
|
|
let src_box = TfdtBox {
|
|
version: 0,
|
|
flags: 0,
|
|
base_media_decode_time: 0,
|
|
};
|
|
let mut buf = Vec::new();
|
|
src_box.write_box(&mut buf).unwrap();
|
|
assert_eq!(buf.len(), src_box.box_size() as usize);
|
|
|
|
let mut reader = Cursor::new(&buf);
|
|
let header = BoxHeader::read(&mut reader).unwrap();
|
|
assert_eq!(header.name, BoxType::TfdtBox);
|
|
assert_eq!(src_box.box_size(), header.size);
|
|
|
|
let dst_box = TfdtBox::read_box(&mut reader, header.size).unwrap();
|
|
assert_eq!(src_box, dst_box);
|
|
}
|
|
|
|
#[test]
|
|
fn test_tfdt64() {
|
|
let src_box = TfdtBox {
|
|
version: 1,
|
|
flags: 0,
|
|
base_media_decode_time: 0,
|
|
};
|
|
let mut buf = Vec::new();
|
|
src_box.write_box(&mut buf).unwrap();
|
|
assert_eq!(buf.len(), src_box.box_size() as usize);
|
|
|
|
let mut reader = Cursor::new(&buf);
|
|
let header = BoxHeader::read(&mut reader).unwrap();
|
|
assert_eq!(header.name, BoxType::TfdtBox);
|
|
assert_eq!(src_box.box_size(), header.size);
|
|
|
|
let dst_box = TfdtBox::read_box(&mut reader, header.size).unwrap();
|
|
assert_eq!(src_box, dst_box);
|
|
}
|
|
}
|