stuff... and pain

Cargo.lock

@@ -2676,6 +2676,27 @@ version = "1.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
 
+[[package]]
+name = "snafu"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b835cb902660db3415a672d862905e791e54d306c6e8189168c7f3d9ae1c79d"
+dependencies = [
+ "snafu-derive",
+]
+
+[[package]]
+name = "snafu-derive"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38d1e02fca405f6280643174a50c942219f0bbf4dbf7d480f1dd864d6f211ae5"
+dependencies = [
+ "heck 0.5.0",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "socket2"
 version = "0.5.7"
@@ -2938,18 +2959,6 @@ dependencies = [
  "tungstenite 0.21.0",
 ]
 
-[[package]]
-name = "tokio-tungstenite"
-version = "0.23.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c6989540ced10490aaf14e6bad2e3d33728a2813310a0c71d1574304c49631cd"
-dependencies = [
- "futures-util",
- "log",
- "tokio",
- "tungstenite 0.23.0",
-]
-
 [[package]]
 name = "tokio-util"
 version = "0.7.11"
@@ -3253,13 +3262,16 @@ dependencies = [
  "ctrlc",
  "gst-plugin-webrtc",
  "gstreamer",
+ "gstreamer-webrtc",
+ "lazy_static",
  "log",
  "serde",
  "serde_json",
- "tokio",
- "tokio-tungstenite 0.23.1",
+ "snafu",
+ "toml",
  "tracing",
  "tracing-subscriber",
+ "tungstenite 0.23.0",
 ]
 
 [[package]]

Cargo.toml

@@ -11,10 +11,15 @@ config = "0.14.0"
 ctrlc = "3.4.4"
 gst-plugin-webrtc = { version = "0.13.0", features = ["v1_22"] }
 gstreamer = { version = "0.23.0", features = ["v1_22"] }
+gstreamer-webrtc = { version = "0.23.0", features = ["v1_22"] }
+lazy_static = "1.5.0"
 log = "0.4.22"
 serde = { version = "1.0.204", features = ["derive"] }
 serde_json = "1.0.122"
-tokio = "1.39.2"
-tokio-tungstenite = "0.23.1"
+snafu = "0.8.4"
+# tokio = "1.39.2"
+# tokio-tungstenite = "0.23.1"
+toml = "0.8.19"
 tracing = "0.1.40"
 tracing-subscriber = "0.3.18"
+tungstenite = "0.23.0"

src/config.rs

@@ -0,0 +1,53 @@
+use config::{Config, FileFormat};
+use serde::{Deserialize, Serialize};
+use snafu::prelude::*;
+use std::fs::File;
+use std::io::Write;
+use tracing::{info, instrument};
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct AppConfig {
+    pub destination_ip: String,
+    pub destination_port: u32,
+}
+
+impl Default for AppConfig {
+    fn default() -> Self {
+        AppConfig {
+            destination_ip: "localhost".to_string(),
+            destination_port: 7891,
+        }
+    }
+}
+
+pub fn load_config() -> AppConfig {
+    Config::builder()
+        .add_source(config::File::new("./settings.toml", FileFormat::Toml))
+        .build()
+        .and_then(|val| val.try_deserialize())
+        .unwrap_or_default()
+}
+
+#[derive(Debug, Snafu)]
+pub enum SaveConfigError {
+    #[snafu(display("Could not serialize app state: {source}"))]
+    SerdeError { source: toml::ser::Error },
+    #[snafu(display("Could not write app state to file: {path}"))]
+    IoError {
+        source: std::io::Error,
+        path: String,
+    },
+}
+
+#[instrument]
+pub fn save_config(config: &AppConfig) -> Result<(), SaveConfigError> {
+    let toml_str = toml::to_string(&config).context(SerdeSnafu)?;
+    let mut file = File::create("./settings.toml").context(IoSnafu {
+        path: "./settings.toml",
+    })?;
+    file.write_all(toml_str.as_bytes()).context(IoSnafu {
+        path: "./settings.toml",
+    })?;
+    info!("Config file saved successfully");
+    Ok(())
+}

src/main.rs

@@ -2,17 +2,27 @@ use std::sync::{atomic::AtomicBool, Arc};
 
 use anyhow::Error;
 use gstreamer::{prelude::*, Element, ElementFactory, Pipeline, State};
-use gstrswebrtc::{signaller::Signallable, webrtcsink::WhipWebRTCSink};
+use gstrswebrtc::{signaller as signaller_interface, webrtcsink};
 
+mod config;
+mod signaller;
+
+use signaller::{SignallerEvent, SENDER_CHANNEL};
 
 fn main() -> Result<(), Error> {
-
+    // TRACING SETUP
     let sub = tracing_subscriber::FmtSubscriber::new();
     if let Err(e) = tracing::subscriber::set_global_default(sub) {
         panic!("Could not set tracing global: {e}");
     }
 
+    let config = config::load_config();
 
+    let (sender, receiver) = std::sync::mpsc::channel::<SignallerEvent>();
+
+    *SENDER_CHANNEL.lock().unwrap() = Some(sender.clone());
+
+    // EXIT HANDLER
     let to_quit = Arc::new(AtomicBool::new(false));
     let to_quit_2 = to_quit.clone();
 
@@ -20,44 +30,65 @@ fn main() -> Result<(), Error> {
         to_quit_2.store(true, std::sync::atomic::Ordering::SeqCst);
     })?;
 
+    // GSTREAMER SETUP
     gstreamer::init()?;
     gstrswebrtc::plugin_register_static()?;
 
+    // PIPELINE INSTANTIATION
+    let custom_signaller = signaller::MyCustomSignaller::new();
+    let webrtcsink = webrtcsink::BaseWebRTCSink::with_signaller(
+        signaller_interface::Signallable::from(custom_signaller),
+    );
+
     let pipeline = Pipeline::with_name("rstp-pipeline");
 
     // let source = ElementFactory::make("videotestsrc")
-    let source = ElementFactory::make("videotestsrc")
-        .build().unwrap();
+    let source = ElementFactory::make("videotestsrc").build().unwrap();
 
-    let convert = ElementFactory::make("x264enc")
-        .build().unwrap();
+    let convert = ElementFactory::make("x264enc").build().unwrap();
 
-    let whipsink = gstreamer::ElementFactory::make("whipclientsink")
-        .name("whip-sink_123059")
-        .build()?;
+    pipeline
+        .add_many([&source, &convert, webrtcsink.upcast_ref()])
+        .unwrap();
 
-    if let Some(whipsink) = whipsink.dynamic_cast_ref::<gstrswebrtc::webrtcsink::WhipWebRTCSink>() {
-        let signaller = whipsink.property::<Signallable>("signaller");
-        signaller.set_property_from_str(
-           "whip-endpoint",
-           &format!("http://localhost:{}/{}/whip", 8889, "mystream"),
-        );
-    }
+    Element::link_many([&source, &convert, webrtcsink.upcast_ref::<Element>()]).unwrap();
 
-    pipeline.add_many([&source, &convert, &whipsink]).unwrap();
+    // PIPELINE START
+    // pipeline.set_state(State::Playing).unwrap();
 
-    Element::link_many([&source, &convert, &whipsink]).unwrap();
-
-    pipeline.set_state(State::Playing).unwrap();
 
+    // BUT WHEN WILL IT END?
     loop {
+        if let Ok((ws, resp)) = tungstenite::connect(format!("ws://{}:{}", config.destination_ip, config.destination_port)) {
+            while !to_quit.load(std::sync::atmoic::Ordering::SeqCst) {
+                match ws.read() {
+                    Err(e) => {
+                        error!("There was an error from the websocket: {e}");
+                        break;
+                    },
+                    Ok(msg) => {
+                        match msg {
+                            Message::Text(text) => {
+                                info!("There was a text message! {text}");
+                                match text {
+                                    "StartStream" => pipeline.set_state(State::Playing),
+                                    "StopStream" => pipeline.set_state(State::Paused),
+                                    _ => 
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            
+        }
+
         if to_quit.load(std::sync::atomic::Ordering::SeqCst) {
             println!("Recieved Ctrl+C, stopping");
 
             pipeline.set_state(State::Null).unwrap();
             break;
         }
-
         std::thread::sleep(std::time::Duration::from_millis(200));
     }
 

src/signaller/imp.rs

@@ -0,0 +1,110 @@
+use std::sync::Mutex;
+
+use gstreamer::glib;
+use gstreamer::subclass::prelude::*;
+use gstreamer_webrtc::WebRTCSessionDescription;
+use gstrswebrtc::signaller::{Signallable, SignallableImpl};
+use lazy_static::lazy_static;
+use std::sync::mpsc::Sender;
+use tracing::error;
+
+lazy_static! {
+    pub static ref SENDER_CHANNEL: Mutex<Option<Sender<SignallerEvent>>> = Mutex::new(None);
+}
+
+pub enum SignallerEvent {
+    Start,
+    Stop,
+    SendSDP(SdpMessage),
+    AddICE(ICE),
+    End(String),
+}
+
+pub struct ICE {
+    pub session_id: String,
+    pub candidate: String,
+    pub sdp_m_line_index: u32,
+}
+
+pub enum SdpMessage {
+    Offer(String),
+    Answer(String),
+}
+
+#[derive(Default)]
+pub struct Signaller {}
+
+impl Signaller {}
+
+impl SignallableImpl for Signaller {
+    fn start(&self) {
+        SENDER_CHANNEL.lock().unwrap().as_ref().map(|msg_bus| {
+            if let Err(e) = msg_bus.send(SignallerEvent::Start) {
+                error!("Could not send message from the signaller to the message bus! {e}");
+            }
+        });
+    }
+
+    fn stop(&self) {
+        SENDER_CHANNEL.lock().unwrap().as_ref().map(|msg_bus| {
+            if let Err(e) = msg_bus.send(SignallerEvent::Stop) {
+                error!("Could not send message from the signaller to the message bus! {e}");
+            }
+        });
+    }
+
+    fn send_sdp(&self, _session_id: &str, sdp: &WebRTCSessionDescription) {
+        let message = {
+            if sdp.type_() == gstreamer_webrtc::WebRTCSDPType::Offer {
+                SdpMessage::Offer(sdp.sdp().as_text().unwrap())
+            } else {
+                SdpMessage::Answer(sdp.sdp().as_text().unwrap())
+            }
+        };
+
+        SENDER_CHANNEL.lock().unwrap().as_ref().map(|msg_bus| {
+            if let Err(e) = msg_bus.send(SignallerEvent::SendSDP(message)) {
+                error!("Could not send message from the signaller to the message bus! {e}");
+            }
+        });
+    }
+
+    fn add_ice(
+        &self,
+        session_id: &str,
+        candidate: &str,
+        sdp_m_line_index: u32,
+        _sdp_mid: Option<String>,
+    ) {
+        let ice_msg = ICE {
+            session_id: session_id.to_string(),
+            candidate: candidate.to_string(),
+            sdp_m_line_index,
+        };
+
+        SENDER_CHANNEL.lock().unwrap().as_ref().map(|msg_bus| {
+            if let Err(e) = msg_bus.send(SignallerEvent::AddICE(ice_msg)) {
+                error!("Could not send message from the signaller to the message bus! {e}");
+            }
+        });
+    }
+
+    fn end_session(&self, sess_id: &str) {
+        let session_id = sess_id.to_string();
+        SENDER_CHANNEL.lock().unwrap().as_ref().map(|msg_bus| {
+            if let Err(e) = msg_bus.send(SignallerEvent::End(session_id)) {
+                error!("Could not send message from the signaller to the message bus! {e}");
+            }
+        });
+    }
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for Signaller {
+    const NAME: &'static str = "MyCustomWebRTCSinkSignaller";
+    type Type = super::MyCustomSignaller;
+    type ParentType = glib::Object;
+    type Interfaces = (Signallable,);
+}
+
+impl ObjectImpl for Signaller {}

src/signaller/mod.rs

@@ -0,0 +1,21 @@
+use gstreamer::glib;
+use gstrswebrtc::signaller::Signallable;
+
+mod imp;
+pub use imp::{SdpMessage, SignallerEvent, ICE, SENDER_CHANNEL};
+
+glib::wrapper! {
+    pub struct MyCustomSignaller(ObjectSubclass<imp::Signaller>) @implements Signallable;
+}
+
+impl MyCustomSignaller {
+    pub fn new() -> Self {
+        glib::Object::new()
+    }
+}
+
+impl Default for MyCustomSignaller {
+    fn default() -> Self {
+        MyCustomSignaller::new()
+    }
+}