Improve building documentation

- Add apt-get install lines for Ubuntu 18.04
- add gstreamer-webrtc-1.0 and gstreamer-sdp-1.0 to CFLAGS
- make the CLAGS match LIBS in Makefile dependencies

webrtc/README.md

@@ -18,6 +18,12 @@ One thing to note is that it's written in Python 2, so you may need to replace a
 
 ## Building GStreamer manually from source
 
+Here are the commands for Ubuntu 18.04.
+
+```
+sudo apt-get install -y gstreamer1.0-tools gstreamer1.0-nice gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-plugins-good libgstreamer1.0-dev git libglib2.0-dev libgstreamer-plugins-bad1.0-dev libsoup2.4-dev libjson-glib-dev
+```
+
 For hacking on the webrtc plugin, you may want to build manually using the git repositories:
 
  - http://cgit.freedesktop.org/gstreamer/gstreamer
@@ -61,7 +67,7 @@ http://blog.nirbheek.in/2018/02/gstreamer-webrtc.html
 
 #### Running the C version
 
-* Build the sources in the `gst/` directory on your machine
+* Build the sources in the `gst/` directory on your machine. Use `make` or
 
 ```console
 $ gcc webrtc-sendrecv.c $(pkg-config --cflags --libs gstreamer-webrtc-1.0 gstreamer-sdp-1.0 libsoup-2.4 json-glib-1.0) -o webrtc-sendrecv

webrtc/multiparty-sendrecv/gst/mp-webrtc-sendrecv.c

@@ -428,6 +428,7 @@ start_pipeline (void)
   return TRUE;
 
 err:
+  g_print ("State change failure\n");
   if (pipeline)
     g_clear_object (&pipeline);
   return FALSE;
@@ -517,6 +518,7 @@ do_join_room (const gchar * text)
   }
 
   app_state = ROOM_JOINED;
+  g_print ("Room joined\n");
   /* Start recording, but not transmitting */
   if (!start_pipeline ()) {
     cleanup_and_quit_loop ("ERROR: Failed to start pipeline",

webrtc/sendrecv/gst/Makefile

@@ -1,6 +1,6 @@
-CC	:= gcc
+CC     := gcc
-LIBS	:= $(shell pkg-config --libs --cflags gstreamer-webrtc-1.0 gstreamer-sdp-1.0 libsoup-2.4 json-glib-1.0)
+LIBS   := $(shell pkg-config --libs --cflags glib-2.0 gstreamer-1.0 gstreamer-sdp-1.0 gstreamer-webrtc-1.0 json-glib-1.0 libsoup-2.4)
-CFLAGS	:= -O0 -ggdb -Wall -fno-omit-frame-pointer
+CFLAGS := -O0 -ggdb -Wall -fno-omit-frame-pointer \
-
+		$(shell pkg-config --cflags glib-2.0 gstreamer-1.0 gstreamer-sdp-1.0 gstreamer-webrtc-1.0 json-glib-1.0 libsoup-2.4)
 webrtc-sendrecv: webrtc-sendrecv.c
-	"$(CC)" $(CFLAGS) $^ $(LIBS) -o $@
+		"$(CC)" $(CFLAGS) $^ $(LIBS) -o $@

webrtc/signalling/README.md

@@ -16,6 +16,8 @@ $ ./generate_cert.sh
 $ ./simple-server.py
 ```
 
+### Session Based
+
 ```console
 $ ./session-client.py
 Our uid is 'ws-test-client-8f63b9'
@@ -24,3 +26,23 @@ Our uid is 'ws-test-client-8f63b9'
 ```console
 $ ./session-client.py --call ws-test-client-8f63b9
 ```
+### Room Based
+
+```console
+$ ./room-client.py --room 123
+Our uid is 'ws-test-client-bdb5b9'
+Got ROOM_OK for room '123'
+```
+
+Another window
+
+```console
+$ ./room-client.py --room 123
+Our uid is 'ws-test-client-78b59a'
+Got ROOM_OK for room '123'
+Sending offer to 'ws-test-client-bdb5b9'
+Sent: ROOM_PEER_MSG ws-test-client-bdb5b9 {"sdp": "initial sdp"}
+Got answer from 'ws-test-client-bdb5b9': {"sdp": "reply sdp"}
+```
+
+.. and similar output with more clients in the same room.