1 files changed, 29 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/units/frequency.cc b/third_party/libwebrtc/api/units/frequency.cc
new file mode 100644
index 0000000000..2d938a2814
--- /dev/null
+++ b/third_party/libwebrtc/api/units/frequency.cc
@@ -0,0 +1,29 @@
+/*
+ *  Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+#include "api/units/frequency.h"
+
+#include "rtc_base/strings/string_builder.h"
+
+namespace webrtc {
+std::string ToString(Frequency value) {
+  char buf[64];
+  rtc::SimpleStringBuilder sb(buf);
+  if (value.IsPlusInfinity()) {
+    sb << "+inf Hz";
+  } else if (value.IsMinusInfinity()) {
+    sb << "-inf Hz";
+  } else if (value.millihertz<int64_t>() % 1000 != 0) {
+    sb.AppendFormat("%.3f Hz", value.hertz<double>());
+  } else {
+    sb << value.hertz<int64_t>() << " Hz";
+  }
+  return sb.str();
+}
+}  // namespace webrtc