srtobject: allow passing SRT Stream ID in stream URI

Based on Stream ID, the application can accept or reject the connection,
select the desired data stream, or set an appropriate passphrase for the
connection. Example usage:

  srt://127.0.0.1:1234?streamid=mystream

diff --git a/ext/srt/gstsrtobject.c b/ext/srt/gstsrtobject.c
index 95c04c9..26bfe0b 100644 (file)
--- a/ext/srt/gstsrtobject.c
+++ b/ext/srt/gstsrtobject.c
@@ -174,6 +174,18 @@ gst_srt_object_set_common_params (SRTSOCKET sock, GstSRTObject * srtobject,
     }
   }
 
+  if (gst_structure_has_field (srtobject->parameters, "streamid")) {
+    const gchar *streamid;
+
+    streamid = gst_structure_get_string (srtobject->parameters, "streamid");
+    if (streamid != NULL && streamid[0] != '\0') {
+      if (srt_setsockopt (sock, 0, SRTO_STREAMID, streamid, strlen (streamid))) {
+        g_set_error (error, GST_LIBRARY_ERROR, GST_LIBRARY_ERROR_SETTINGS,
+            "failed to set stream ID (reason: %s)", srt_getlasterror_str ());
+      }
+    }
+  }
+
   return TRUE;
 }
 
@@ -587,6 +599,8 @@ gst_srt_object_set_uri (GstSRTObject * srtobject, const gchar * uri,
       } else if (!g_strcmp0 ("pbkeylen", key)) {
         gst_srt_object_set_enum_value (srtobject->parameters,
             GST_TYPE_SRT_KEY_LENGTH, key, value);
+      } else if (!g_strcmp0 ("streamid", key)) {
+        gst_srt_object_set_string_value (srtobject->parameters, key, value);
       }
     }