Fix sink pad ordering

backends/dummy/src/lib.rs

@@ -195,7 +195,7 @@ impl WebRtcControllerBackend for DummyWebRtcController {
     fn add_ice_candidate(&mut self, _: IceCandidate) {}
     fn create_offer(&mut self, _: SendBoxFnOnce<'static, (SessionDescription,)>) {}
     fn create_answer(&mut self, _: SendBoxFnOnce<'static, (SessionDescription,)>) {}
-    fn add_stream(&mut self, _: &mut MediaStream) {}
+    fn add_stream(&mut self, _: Box<MediaStream>) {}
     fn internal_event(&mut self, _: thread::InternalEvent) {}
     fn quit(&mut self) {}
 }

backends/gstreamer/Cargo.toml

@@ -23,6 +23,9 @@ version = "0.8"
 [dependencies.gstreamer-sys]
 version = "0.7"
 
+[dependencies.gstreamer-sdp-sys]
+version = "0.7"
+
 [dependencies.gstreamer]
 version = "0.13"
 features = ["subclassing"]

backends/gstreamer/src/media_capture.rs

@@ -128,14 +128,12 @@ impl GstMediaDevices {
             ("audio/x-raw", "Audio/Source")
         };
         let caps = into_caps(constraints, format)?;
-        println!("requesting {:?}", caps);
         let f = self.monitor.add_filter(filter, &caps);
         let devices = self.monitor.get_devices();
         if let Some(f) = f {
             let _ = self.monitor.remove_filter(f);
         }
         if let Some(d) = devices.get(0) {
-            println!("{:?}", d.get_caps());
             let element = d.create_element(None)?;
             Some(GstMediaTrack { element })
         } else {

backends/gstreamer/src/media_stream.rs

@@ -11,7 +11,6 @@ lazy_static! {
             &[
                 ("media", &"audio"),
                 ("encoding-name", &"OPUS"),
-                ("payload", &(97i32)),
             ],
         )
     };
@@ -21,7 +20,6 @@ lazy_static! {
             &[
                 ("media", &"video"),
                 ("encoding-name", &"VP8"),
-                ("payload", &(96i32)),
             ],
         )
     };
@@ -50,20 +48,47 @@ impl MediaStream for GStreamerMediaStream {
 }
 
 impl GStreamerMediaStream {
-    pub fn attach_to_webrtc(&mut self, pipeline: &gst::Pipeline, webrtcbin: &gst::Element) {
-        println!("atttaching a {:?} stream", self.type_);
-        self.attach_to_pipeline(pipeline);
-
-        let caps = match self.type_ {
+    pub fn caps(&self) -> &gst::Caps {
+        match self.type_ {
             StreamType::Audio => &*RTP_CAPS_OPUS,
             StreamType::Video => &*RTP_CAPS_VP8,
-        };
-        self.elements
-            .last()
-            .as_ref()
-            .unwrap()
-            .link_filtered(webrtcbin, caps)
-            .unwrap();
+        }
+    }
+
+    pub fn caps_with_payload(&self, payload: i32) -> gst::Caps {
+        match self.type_ {
+            StreamType::Audio => {
+                gst::Caps::new_simple(
+                    "application/x-rtp",
+                    &[
+                        ("media", &"audio"),
+                        ("encoding-name", &"OPUS"),
+                        ("payload", &(payload)),
+                    ],
+                )
+            }
+            StreamType::Video => {
+                gst::Caps::new_simple(
+                    "application/x-rtp",
+                    &[
+                        ("media", &"video"),
+                        ("encoding-name", &"VP8"),
+                        ("payload", &(payload)),
+                    ],
+                )
+            }
+        }
+    }
+
+    pub fn insert_capsfilter(&mut self) {
+        assert!(self.pipeline.is_none());
+        let capsfilter = gst::ElementFactory::make("capsfilter", None).unwrap();
+        capsfilter.set_property("caps", self.caps()).unwrap();
+        self.elements.push(capsfilter);
+    }
+
+    pub fn src_element(&self) -> gst::Element {
+        self.elements.last().unwrap().clone()
     }
 
     pub fn attach_to_pipeline(&mut self, pipeline: &gst::Pipeline) {