add binary package to export stream tracks

4 files changed, 190 insertions, 0 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 45427dd..82c70d1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -171,6 +171,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "anyhow"
+version = "1.0.66"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "216261ddc8289130e551ddcd5ce8a064710c0d064a4d2895c67151c92b5443f6"
+
+[[package]]
 name = "arboard"
 version = "2.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -666,6 +672,19 @@ dependencies = [
 ]
 
 [[package]]
+name = "client-native-export"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "bytes",
+ "clap",
+ "client-native-lib",
+ "env_logger",
+ "log",
+ "tokio",
+]
+
+[[package]]
 name = "client-native-lib"
 version = "0.1.0"
 dependencies = [
diff --git a/Cargo.toml b/Cargo.toml
index 7d04604..020ff37 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,4 +4,5 @@ members = [
     "client-native-rift",
     "client-native-lib",
     "client-native-gui",
+    "client-native-export",
 ]
diff --git a/client-native-export/Cargo.toml b/client-native-export/Cargo.toml
new file mode 100644
index 0000000..8a5ef62
--- /dev/null
+++ b/client-native-export/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name = "client-native-export"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+client-native-lib = { path = "../client-native-lib" }
+
+clap = { version = "3.2.21", features = ["derive"] }
+env_logger = "0.8"
+log = "0.4"
+
+tokio = { version = "1.21", features = ["full"] }
+bytes = "1.2.1"
+anyhow = "1.0.66"
diff --git a/client-native-export/src/main.rs b/client-native-export/src/main.rs
new file mode 100644
index 0000000..f4dffd6
--- /dev/null
+++ b/client-native-export/src/main.rs
@@ -0,0 +1,155 @@
+/*
+    This file is part of keks-meet (https://codeberg.org/metamuffin/keks-meet)
+    which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
+    Copyright (C) 2022 metamuffin <metamuffin@disroot.org>
+*/
+#![feature(box_syntax)]
+
+use clap::Parser;
+use client_native_lib::{
+    instance::Instance,
+    peer::{Peer, TransportChannel},
+    protocol::ProvideInfo,
+    webrtc::{
+        rtcp::payload_feedbacks::picture_loss_indication::PictureLossIndication,
+        rtp::{codecs::h264::H264Packet, packetizer::Depacketizer},
+        track::track_remote::TrackRemote,
+    },
+    Config, DynFut, EventHandler,
+};
+use log::{debug, error, info, warn};
+use std::{
+    io::{stdout, Write},
+    sync::Arc,
+    time::Duration,
+};
+
+fn main() {
+    env_logger::builder()
+        .filter_module("rift", log::LevelFilter::Info)
+        .filter_module("client_native_lib", log::LevelFilter::Info)
+        .parse_env("LOG")
+        .init();
+    tokio::runtime::Builder::new_multi_thread()
+        .enable_all()
+        .build()
+        .unwrap()
+        .block_on(run())
+}
+
+#[derive(Parser, Clone)]
+pub struct Args {
+    /// keks-meet server used for establishing p2p connection
+    #[clap(long, default_value = "wss://meet.metamuffin.org")]
+    signaling_uri: String,
+    /// username for the `identify` packet
+    #[clap(short, long, default_value = "guest")]
+    username: String,
+    /// pre-shared secret (aka. room name)
+    #[clap(short, long)]
+    secret: String,
+}
+
+async fn run() {
+    let args = Args::parse();
+
+    let inst = Instance::new(
+        Config {
+            secret: args.secret.clone(),
+            signaling_uri: args.signaling_uri.clone(),
+            username: args.username.clone(),
+        },
+        Arc::new(Handler {
+            _args: Arc::new(args.clone()),
+        }),
+    )
+    .await;
+
+    inst.spawn_ping().await;
+    inst.receive_loop().await;
+
+    tokio::signal::ctrl_c().await.unwrap();
+    error!("interrupt received, exiting");
+}
+
+#[derive(Clone)]
+struct Handler {
+    _args: Arc<Args>,
+}
+
+impl EventHandler for Handler {
+    fn peer_join(&self, _peer: Arc<Peer>) -> client_native_lib::DynFut<()> {
+        Box::pin(async move {})
+    }
+
+    fn peer_leave(&self, _peer: Arc<Peer>) -> client_native_lib::DynFut<()> {
+        Box::pin(async move {})
+    }
+
+    fn resource_added(
+        &self,
+        peer: Arc<Peer>,
+        info: client_native_lib::protocol::ProvideInfo,
+    ) -> DynFut<()> {
+        let id = info.id.clone();
+        Box::pin(async move {
+            if info.kind == "track" {
+                peer.request_resource(id).await;
+            }
+        })
+    }
+    fn resource_removed(&self, _peer: Arc<Peer>, _id: String) -> DynFut<()> {
+        Box::pin(async {})
+    }
+
+    fn resource_connected(
+        &self,
+        peer: Arc<Peer>,
+        _resource: &ProvideInfo,
+        channel: TransportChannel,
+    ) -> client_native_lib::DynFut<()> {
+        // let resource = resource.clone();
+        // let s = self.clone();
+        let peer = Arc::downgrade(&peer);
+        Box::pin(async move {
+            match channel {
+                TransportChannel::Track(track) => {
+                    let media_ssrc = track.ssrc();
+                    let peer = peer.clone();
+                    tokio::spawn(async move {
+                        loop {
+                            tokio::time::sleep(Duration::from_secs(3)).await;
+                            let peer = peer.upgrade().unwrap();
+                            let r = peer
+                                .peer_connection
+                                .write_rtcp(&[Box::new(PictureLossIndication {
+                                    sender_ssrc: 0,
+                                    media_ssrc,
+                                })])
+                                .await;
+                            if r.is_err() {
+                                break;
+                            }
+                            debug!("trigger keyframe");
+                        }
+                    });
+
+                    export(track).await.unwrap();
+                }
+                TransportChannel::DataChannel(_) => warn!("wrong type"),
+            }
+        })
+    }
+}
+
+async fn export(track: Arc<TrackRemote>) -> anyhow::Result<()> {
+    let mut cached_packet = H264Packet::default();
+    info!("depacketizing rtp to stdout");
+    loop {
+        let (packet, _) = track.read_rtp().await?;
+        if !packet.payload.is_empty() {
+            let raw_payload = cached_packet.depacketize(&packet.payload)?;
+            stdout().write_all(&raw_payload)?;
+        }
+    }
+}