net/quinn: Move quinnwtclientsrc to PushSrc

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1867>

net/quinn/src/quinnwtclientsrc/imp.rs

@@ -55,7 +55,6 @@ enum State {
 struct Settings {
     bind_address: String,
     bind_port: u16,
-    caps: gst::Caps,
     certificate_file: Option<PathBuf>,
     keep_alive_interval: u64,
     timeout: u32,
@@ -66,13 +65,14 @@ struct Settings {
 
 impl Default for Settings {
     fn default() -> Self {
-        let mut transport_config = QuinnQuicTransportConfig::default();
         // Required for the WebTransport handshake
-        transport_config.max_concurrent_bidi_streams = 2u32.into();
-        transport_config.max_concurrent_uni_streams = 1u32.into();
+        let transport_config = QuinnQuicTransportConfig {
+            max_concurrent_bidi_streams: 2u32.into(),
+            max_concurrent_uni_streams: 1u32.into(),
+            ..Default::default()
+        };
 
         Settings {
-            caps: gst::Caps::new_any(),
             bind_address: DEFAULT_BIND_ADDR.to_string(),
             bind_port: DEFAULT_BIND_PORT,
             certificate_file: None,
@@ -144,10 +144,6 @@ impl ObjectImpl for QuinnWebTransportClientSrc {
     fn properties() -> &'static [glib::ParamSpec] {
         static PROPERTIES: LazyLock<Vec<glib::ParamSpec>> = LazyLock::new(|| {
             vec![
-                glib::ParamSpecBoxed::builder::<gst::Caps>("caps")
-                    .nick("caps")
-                    .blurb("The caps of the source pad")
-                    .build(),
                 glib::ParamSpecString::builder("certificate-file")
                     .nick("Certificate file")
                     .blurb("Path to certificate chain in single file")
@@ -189,15 +185,6 @@ impl ObjectImpl for QuinnWebTransportClientSrc {
         let mut settings = self.settings.lock().unwrap();
 
         match pspec.name() {
-            "caps" => {
-                settings.caps = value
-                    .get::<Option<gst::Caps>>()
-                    .expect("type checked upstream")
-                    .unwrap_or_else(gst::Caps::new_any);
-
-                let srcpad = self.obj().static_pad("src").expect("source pad expected");
-                srcpad.mark_reconfigure();
-            }
             "certificate-file" => {
                 let value: String = value.get().unwrap();
                 settings.certificate_file = Some(value.into());
@@ -222,7 +209,6 @@ impl ObjectImpl for QuinnWebTransportClientSrc {
         let settings = self.settings.lock().unwrap();
 
         match pspec.name() {
-            "caps" => settings.caps.to_value(),
             "certificate-file" => {
                 let certfile = settings.certificate_file.as_ref();
                 certfile.and_then(|file| file.to_str()).to_value()
@@ -247,7 +233,7 @@ impl ObjectImpl for QuinnWebTransportClientSrc {
 impl ObjectSubclass for QuinnWebTransportClientSrc {
     const NAME: &'static str = "GstQuinnWebTransportClientSrc";
     type Type = super::QuinnWebTransportClientSrc;
-    type ParentType = gst_base::BaseSrc;
+    type ParentType = gst_base::PushSrc;
 }
 
 impl BaseSrcImpl for QuinnWebTransportClientSrc {
@@ -310,28 +296,24 @@ impl BaseSrcImpl for QuinnWebTransportClientSrc {
         Ok(())
     }
 
-    fn query(&self, query: &mut gst::QueryRef) -> bool {
-        if let gst::QueryViewMut::Scheduling(q) = query.view_mut() {
-            q.set(
-                gst::SchedulingFlags::SEQUENTIAL | gst::SchedulingFlags::BANDWIDTH_LIMITED,
-                1,
-                -1,
-                0,
-            );
-            q.add_scheduling_modes(&[gst::PadMode::Pull, gst::PadMode::Push]);
-            return true;
-        }
-
-        BaseSrcImplExt::parent_query(self, query)
+    fn unlock(&self) -> Result<(), gst::ErrorMessage> {
+        let mut canceller = self.canceller.lock().unwrap();
+        canceller.abort();
+        Ok(())
     }
 
-    fn create(
-        &self,
-        offset: u64,
-        buffer: Option<&mut gst::BufferRef>,
-        length: u32,
-    ) -> Result<CreateSuccess, gst::FlowError> {
-        let data = self.get(offset, u64::from(length));
+    fn unlock_stop(&self) -> Result<(), gst::ErrorMessage> {
+        let mut canceller = self.canceller.lock().unwrap();
+        if matches!(&*canceller, Canceller::Cancelled) {
+            *canceller = Canceller::None;
+        }
+        Ok(())
+    }
+}
+
+impl PushSrcImpl for QuinnWebTransportClientSrc {
+    fn create(&self, buffer: Option<&mut gst::BufferRef>) -> Result<CreateSuccess, gst::FlowError> {
+        let data = self.get();
 
         match data {
             Ok(bytes) => {
@@ -356,43 +338,6 @@ impl BaseSrcImpl for QuinnWebTransportClientSrc {
             }
         }
     }
-
-    fn unlock(&self) -> Result<(), gst::ErrorMessage> {
-        let mut canceller = self.canceller.lock().unwrap();
-        canceller.abort();
-        Ok(())
-    }
-
-    fn unlock_stop(&self) -> Result<(), gst::ErrorMessage> {
-        let mut canceller = self.canceller.lock().unwrap();
-        if matches!(&*canceller, Canceller::Cancelled) {
-            *canceller = Canceller::None;
-        }
-        Ok(())
-    }
-
-    fn caps(&self, filter: Option<&gst::Caps>) -> Option<gst::Caps> {
-        let settings = self.settings.lock().unwrap();
-
-        let mut tmp_caps = settings.caps.clone();
-
-        gst::debug!(CAT, imp = self, "Advertising our own caps: {:?}", &tmp_caps);
-
-        if let Some(filter_caps) = filter {
-            gst::debug!(
-                CAT,
-                imp = self,
-                "Intersecting with filter caps: {:?}",
-                &filter_caps
-            );
-
-            tmp_caps = filter_caps.intersect_with_mode(&tmp_caps, gst::CapsIntersectMode::First);
-        };
-
-        gst::debug!(CAT, imp = self, "Returning caps: {:?}", &tmp_caps);
-
-        Some(tmp_caps)
-    }
 }
 
 impl QuinnWebTransportClientSrc {
@@ -459,7 +404,7 @@ impl QuinnWebTransportClientSrc {
         }
     }
 
-    fn get(&self, _offset: u64, length: u64) -> Result<Bytes, Option<gst::ErrorMessage>> {
+    fn get(&self) -> Result<Bytes, Option<gst::ErrorMessage>> {
         let settings = self.settings.lock().unwrap();
         let timeout = settings.timeout;
         let use_datagram = settings.use_datagram;
@@ -485,7 +430,7 @@ impl QuinnWebTransportClientSrc {
                 self.read_datagram(session).await
             } else {
                 let recv = stream.as_mut().unwrap();
-                self.read_stream(recv, length as usize).await
+                self.read_stream(recv, 1024usize).await
             }
         };
 

net/quinn/src/quinnwtclientsrc/mod.rs

@@ -26,7 +26,7 @@ use gst::prelude::*;
 mod imp;
 
 glib::wrapper! {
-    pub struct QuinnWebTransportClientSrc(ObjectSubclass<imp::QuinnWebTransportClientSrc>) @extends gst_base::BaseSrc, gst::Element, gst::Object;
+    pub struct QuinnWebTransportClientSrc(ObjectSubclass<imp::QuinnWebTransportClientSrc>) @extends gst_base::PushSrc, gst_base::BaseSrc, gst::Element, gst::Object;
 }
 
 pub fn register(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {

net/quinn/src/quinnwtserversink/imp.rs

@@ -472,6 +472,7 @@ impl BaseSinkImpl for QuinnWebTransportServerSink {
             },
         }
     }
+
     fn unlock(&self) -> Result<(), gst::ErrorMessage> {
         let mut canceller = self.canceller.lock().unwrap();
         canceller.abort();