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/*
This file is part of jellything (https://codeberg.org/metamuffin/jellything)
which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
Copyright (C) 2025 metamuffin <metamuffin.org>
*/
use crate::{stream_info, SMediaInfo};
use anyhow::{anyhow, bail, Result};
use jellybase::common::stream::StreamContainer;
use jellyremuxer::{matroska_to_mpeg4, matroska_to_webm::matroska_to_webm};
use jellytranscoder::fragment::transcode;
use log::warn;
use std::{
io::{Cursor, Seek, SeekFrom},
sync::Arc,
};
use tokio::{fs::File, io::DuplexStream};
use tokio_util::io::SyncIoBridge;
pub async fn fragment_stream(
mut b: DuplexStream,
info: Arc<SMediaInfo>,
track: usize,
segment: usize,
index: usize,
format_num: usize,
container: StreamContainer,
) -> Result<()> {
let (iinfo, info) = stream_info(info).await?;
let (file_index, track_num) = *iinfo
.track_to_file
.get(track)
.ok_or(anyhow!("track not found"))?;
let path = iinfo.paths[file_index].clone();
let seg = info
.segments
.get(segment)
.ok_or(anyhow!("segment not found"))?;
let track = seg.tracks.get(track).ok_or(anyhow!("track not found"))?;
let format = track
.formats
.get(format_num)
.ok_or(anyhow!("format not found"))?;
if format.remux {
match container {
StreamContainer::WebM | StreamContainer::Matroska => {
tokio::task::spawn_blocking(move || {
if let Err(err) = jellyremuxer::write_fragment_into(
SyncIoBridge::new(b),
&path,
track_num,
container == StreamContainer::WebM,
&info.name.unwrap_or_default(),
index,
) {
warn!("segment stream error: {err}");
}
});
}
StreamContainer::MPEG4 => {
tokio::task::spawn_blocking(move || {
let mut buf = Cursor::new(Vec::new());
if let Err(err) = jellyremuxer::write_fragment_into(
&mut buf,
&path,
track_num,
false,
&info.name.unwrap_or_default(),
index,
) {
warn!("segment stream error: {err}");
}
buf.seek(SeekFrom::Start(0)).unwrap();
if let Err(err) = matroska_to_mpeg4(buf, SyncIoBridge::new(b)) {
warn!("mpeg4 transmux failed: {err}");
}
});
}
_ => bail!("not yet supported"),
}
} else {
let location = transcode(
track.kind,
format,
&format!("{path:?} {track_num} {index}"),
move |b| {
tokio::task::spawn_blocking(move || {
if let Err(err) = jellyremuxer::write_fragment_into(
SyncIoBridge::new(b),
&path,
track_num,
false,
&info.name.unwrap_or_default(),
index,
) {
warn!("segment stream error: {err}");
}
});
},
)
.await?;
let mut frag = File::open(location.abs()).await?;
match container {
StreamContainer::WebM => {
tokio::task::spawn_blocking(move || {
if let Err(err) =
matroska_to_webm(SyncIoBridge::new(frag), SyncIoBridge::new(b))
{
warn!("webm transmux failed: {err}");
}
});
}
StreamContainer::Matroska => {
tokio::task::spawn(async move {
if let Err(err) = tokio::io::copy(&mut frag, &mut b).await {
warn!("cannot write stream: {err}")
}
});
}
StreamContainer::MPEG4 => {
tokio::task::spawn_blocking(move || {
if let Err(err) =
matroska_to_mpeg4(SyncIoBridge::new(frag), SyncIoBridge::new(b))
{
warn!("mpeg4 transmux failed: {err}");
}
});
}
_ => bail!("unsupported"),
}
}
Ok(())
}
|
