mirror of
https://github.com/alfg/mp4-rust.git
synced 2024-05-20 01:08:06 +00:00
309 lines
8.7 KiB
Rust
309 lines
8.7 KiB
Rust
use std::{
|
|
collections::HashMap,
|
|
io::{Read, Seek},
|
|
time::Duration,
|
|
};
|
|
|
|
use tokio::io::{AsyncRead, AsyncReadExt};
|
|
|
|
use crate::{
|
|
BlockReader, BoxHeader, BoxType, EmsgBox, Error, FourCC, FtypBox, MetaBox, Metadata, MoofBox,
|
|
MoovBox, Mp4Sample, Mp4Track,
|
|
};
|
|
|
|
#[derive(Debug, Clone)]
|
|
pub struct Mp4Header {
|
|
pub ftyp: Option<FtypBox>,
|
|
pub moov: Option<MoovBox>,
|
|
pub moofs: Vec<MoofBox>,
|
|
pub emsgs: Vec<EmsgBox>,
|
|
|
|
tracks: HashMap<u32, Mp4Track>,
|
|
}
|
|
|
|
// async fn read
|
|
|
|
impl Mp4Header {
|
|
pub async fn read<R, C>(reader: &mut R, _cache: Option<C>) -> Result<Self, Error>
|
|
where
|
|
R: AsyncRead + Unpin,
|
|
// C: AsyncRead + AsyncWrite + Unpin,
|
|
{
|
|
let mut ftyp = None;
|
|
let mut moov = None;
|
|
let mut moofs = Vec::new();
|
|
// let mut moof_offsets = Vec::new();
|
|
let mut emsgs = Vec::new();
|
|
let mut buff = Vec::with_capacity(1024);
|
|
|
|
while let Some(BoxHeader { kind, size: s }) = BoxHeader::read(reader).await? {
|
|
if buff.len() < s as usize {
|
|
buff.resize(s as usize, 0);
|
|
}
|
|
|
|
// Match and parse the atom boxes.
|
|
match kind {
|
|
BoxType::FtypBox => {
|
|
reader.read_exact(&mut buff[0..s as usize]).await?;
|
|
|
|
ftyp = Some(FtypBox::read_block(&mut &buff[0..s as usize])?);
|
|
println!("{:?}", ftyp);
|
|
}
|
|
|
|
BoxType::MoovBox => {
|
|
reader.read_exact(&mut buff[0..s as usize]).await?;
|
|
|
|
println!("moov");
|
|
|
|
moov = Some(MoovBox::read_block(&mut &buff[0..s as usize])?);
|
|
}
|
|
|
|
// BoxType::MoofBox => {
|
|
// let moof_offset = reader.stream_position()? - 8;
|
|
// let moof = MoofBox::read_box(reader, s)?;
|
|
// moofs.push(moof);
|
|
// moof_offsets.push(moof_offset);
|
|
// }
|
|
|
|
// BoxType::EmsgBox => {
|
|
// let emsg = EmsgBox::read_box(reader, s)?;
|
|
// emsgs.push(emsg);
|
|
// }
|
|
// BoxType::MdatBox => {
|
|
// skip_box(reader, s)?;
|
|
// }
|
|
|
|
// BoxType::FreeBox => {
|
|
// reader.read_exact(buf)
|
|
// skip_box(reader, s)?;
|
|
// }
|
|
bt => {
|
|
println!("skip {:?}", bt);
|
|
|
|
let mut buff = [0u8; 1024];
|
|
let mut read = 0;
|
|
for chunk in (0..s).step_by(1024) {
|
|
if chunk == 0 {
|
|
continue;
|
|
}
|
|
|
|
reader.read_exact(&mut buff).await?;
|
|
read += buff.len();
|
|
}
|
|
|
|
if s as usize - read > 0 {
|
|
reader.read_exact(&mut buff[0..s as usize - read]).await?;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ftyp.is_none() {
|
|
return Err(Error::BoxNotFound(BoxType::FtypBox));
|
|
}
|
|
|
|
if moov.is_none() {
|
|
return Err(Error::BoxNotFound(BoxType::MoovBox));
|
|
}
|
|
|
|
let mut tracks = if let Some(ref moov) = moov {
|
|
if moov.traks.iter().any(|trak| trak.tkhd.track_id == 0) {
|
|
return Err(Error::InvalidData("illegal track id 0"));
|
|
}
|
|
moov.traks
|
|
.iter()
|
|
.map(|trak| (trak.tkhd.track_id, Mp4Track::from(trak)))
|
|
.collect()
|
|
} else {
|
|
HashMap::new()
|
|
};
|
|
|
|
// Update tracks if any fragmented (moof) boxes are found.
|
|
// if !moofs.is_empty() {
|
|
// let mut default_sample_duration = 0;
|
|
// if let Some(ref moov) = moov {
|
|
// if let Some(ref mvex) = &moov.mvex {
|
|
// default_sample_duration = mvex.trex.default_sample_duration
|
|
// }
|
|
// }
|
|
|
|
// for (moof, moof_offset) in moofs.iter().zip(moof_offsets) {
|
|
// for traf in moof.trafs.iter() {
|
|
// let track_id = traf.tfhd.track_id;
|
|
// if let Some(track) = tracks.get_mut(&track_id) {
|
|
// track.default_sample_duration = default_sample_duration;
|
|
// track.moof_offsets.push(moof_offset);
|
|
// track.trafs.push(traf.clone())
|
|
// } else {
|
|
// return Err(Error::TrakNotFound(track_id));
|
|
// }
|
|
// }
|
|
// }
|
|
// }
|
|
|
|
Ok(Mp4Header {
|
|
ftyp,
|
|
moov,
|
|
moofs,
|
|
emsgs,
|
|
tracks,
|
|
})
|
|
}
|
|
|
|
#[inline]
|
|
pub fn major_brand(&self) -> Option<&FourCC> {
|
|
Some(&self.ftyp.as_ref()?.major_brand)
|
|
}
|
|
|
|
pub fn minor_version(&self) -> Option<u32> {
|
|
Some(self.ftyp.as_ref()?.minor_version)
|
|
}
|
|
|
|
pub fn compatible_brands(&self) -> Option<&[FourCC]> {
|
|
Some(&self.ftyp.as_ref()?.compatible_brands)
|
|
}
|
|
|
|
pub fn duration(&self) -> Option<Duration> {
|
|
self.moov.as_ref().map(|moov| {
|
|
Duration::from_millis(moov.mvhd.duration * 1000 / moov.mvhd.timescale as u64)
|
|
})
|
|
}
|
|
|
|
pub fn timescale(&self) -> Option<u32> {
|
|
Some(self.moov.as_ref()?.mvhd.timescale)
|
|
}
|
|
|
|
pub fn is_fragmented(&self) -> bool {
|
|
!self.moofs.is_empty()
|
|
}
|
|
|
|
pub fn tracks(&self) -> &HashMap<u32, Mp4Track> {
|
|
&self.tracks
|
|
}
|
|
|
|
pub fn sample_count(&self, track_id: u32) -> Result<u32, Error> {
|
|
if let Some(track) = self.tracks.get(&track_id) {
|
|
Ok(track.sample_count())
|
|
} else {
|
|
Err(Error::TrakNotFound(track_id))
|
|
}
|
|
}
|
|
|
|
pub fn read_sample<R: Read + Seek>(
|
|
&mut self,
|
|
reader: &mut R,
|
|
track_id: u32,
|
|
sample_id: u32,
|
|
) -> Result<Option<Mp4Sample>, Error> {
|
|
if let Some(track) = self.tracks.get(&track_id) {
|
|
track.read_sample(reader, sample_id)
|
|
} else {
|
|
Err(Error::TrakNotFound(track_id))
|
|
}
|
|
}
|
|
|
|
pub fn sample_offset(&mut self, track_id: u32, sample_id: u32) -> Result<u64, Error> {
|
|
if let Some(track) = self.tracks.get(&track_id) {
|
|
track.sample_offset(sample_id)
|
|
} else {
|
|
Err(Error::TrakNotFound(track_id))
|
|
}
|
|
}
|
|
|
|
pub fn metadata(&self) -> Option<impl Metadata<'_>> {
|
|
self.moov.as_ref()?.udta.as_ref().and_then(|udta| {
|
|
udta.meta.as_ref().and_then(|meta| match meta {
|
|
MetaBox::Mdir { ilst } => ilst.as_ref(),
|
|
_ => None,
|
|
})
|
|
})
|
|
}
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct AsyncMp4Reader<R> {
|
|
pub header: Mp4Header,
|
|
reader: R,
|
|
}
|
|
|
|
impl<R: AsyncRead + Unpin> AsyncMp4Reader<R> {
|
|
pub fn from_reader(reader: R, header: Mp4Header) -> Self {
|
|
Self { reader, header }
|
|
}
|
|
|
|
pub async fn read_header(mut reader: R) -> Result<Self, Error> {
|
|
Ok(AsyncMp4Reader {
|
|
header: Mp4Header::read(&mut reader, Some(())).await?,
|
|
reader,
|
|
})
|
|
}
|
|
|
|
// pub fn read_fragment_header<FR: Read + Seek>(
|
|
// &self,
|
|
// mut reader: FR,
|
|
// size: u64,
|
|
// ) -> Result<Mp4Reader<FR>> {
|
|
// Ok(Mp4Reader {
|
|
// header: self.header.read_fragment(&mut reader, size)?,
|
|
// reader,
|
|
// })
|
|
// }
|
|
|
|
// pub fn size(&self) -> u64 {
|
|
// self.header.size()
|
|
// }
|
|
|
|
pub fn major_brand(&self) -> Option<&FourCC> {
|
|
self.header.major_brand()
|
|
}
|
|
|
|
pub fn minor_version(&self) -> Option<u32> {
|
|
self.header.minor_version()
|
|
}
|
|
|
|
pub fn compatible_brands(&self) -> Option<&[FourCC]> {
|
|
self.header.compatible_brands()
|
|
}
|
|
|
|
pub fn duration(&self) -> Option<Duration> {
|
|
self.header.duration()
|
|
}
|
|
|
|
pub fn timescale(&self) -> Option<u32> {
|
|
self.header.timescale()
|
|
}
|
|
|
|
pub fn is_fragmented(&self) -> bool {
|
|
self.header.is_fragmented()
|
|
}
|
|
|
|
pub fn tracks(&self) -> &HashMap<u32, Mp4Track> {
|
|
self.header.tracks()
|
|
}
|
|
|
|
pub fn sample_count(&self, track_id: u32) -> Result<u32, Error> {
|
|
self.header.sample_count(track_id)
|
|
}
|
|
|
|
pub fn read_sample(
|
|
&mut self,
|
|
track_id: u32,
|
|
sample_id: u32,
|
|
) -> Result<Option<Mp4Sample>, Error> {
|
|
self.header
|
|
.read_sample(&mut self.reader, track_id, sample_id)
|
|
}
|
|
|
|
pub fn sample_offset(&mut self, track_id: u32, sample_id: u32) -> Result<u64, Error> {
|
|
self.header.sample_offset(track_id, sample_id)
|
|
}
|
|
}
|
|
|
|
pub struct Mp4Track {}
|
|
|
|
impl<R> AsyncMp4Reader<R> {
|
|
pub fn metadata(&self) -> impl Metadata<'_> {
|
|
self.header.metadata()
|
|
}
|
|
}
|