1 files changed, 22 insertions, 0 deletions
diff --git a/dom/media/webrtc/jsep/SsrcGenerator.cpp b/dom/media/webrtc/jsep/SsrcGenerator.cpp
new file mode 100644
index 0000000000..50025007d1
--- /dev/null
+++ b/dom/media/webrtc/jsep/SsrcGenerator.cpp
@@ -0,0 +1,22 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "jsep/SsrcGenerator.h"
+#include "pk11pub.h"
+
+namespace mozilla {
+
+bool SsrcGenerator::GenerateSsrc(uint32_t* ssrc) {
+  do {
+    SECStatus rv = PK11_GenerateRandom(reinterpret_cast<unsigned char*>(ssrc),
+                                       sizeof(uint32_t));
+    if (rv != SECSuccess) {
+      return false;
+    }
+  } while (mSsrcs.count(*ssrc));
+  mSsrcs.insert(*ssrc);
+
+  return true;
+}
+}  // namespace mozilla