1 files changed, 16 insertions, 0 deletions
diff --git a/dom/media/AudioChannelFormat.cpp b/dom/media/AudioChannelFormat.cpp
new file mode 100644
index 0000000000..6caf72c3ba
--- /dev/null
+++ b/dom/media/AudioChannelFormat.cpp
@@ -0,0 +1,16 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "AudioChannelFormat.h"
+
+#include <algorithm>
+
+namespace mozilla {
+
+uint32_t GetAudioChannelsSuperset(uint32_t aChannels1, uint32_t aChannels2) {
+  return std::max(aChannels1, aChannels2);
+}
+
+}  // namespace mozilla