1 files changed, 51 insertions, 0 deletions
diff --git a/dom/media/CubebUtils.h b/dom/media/CubebUtils.h
new file mode 100644
index 000000000..171c244b7
--- /dev/null
+++ b/dom/media/CubebUtils.h
@@ -0,0 +1,51 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+#if !defined(CubebUtils_h_)
+#define CubebUtils_h_
+
+#include "cubeb/cubeb.h"
+#include "mozilla/dom/AudioChannelBinding.h"
+#include "mozilla/Maybe.h"
+
+namespace mozilla {
+namespace CubebUtils {
+
+typedef cubeb_devid AudioDeviceID;
+
+// Initialize Audio Library. Some Audio backends require initializing the
+// library before using it.
+void InitLibrary();
+
+// Shutdown Audio Library. Some Audio backends require shutting down the
+// library after using it.
+void ShutdownLibrary();
+
+// Returns the maximum number of channels supported by the audio hardware.
+uint32_t MaxNumberOfChannels();
+
+// Get the sample rate the hardware/mixer runs at. Thread safe.
+uint32_t PreferredSampleRate();
+
+void PrefChanged(const char* aPref, void* aClosure);
+double GetVolumeScale();
+bool GetFirstStream();
+cubeb* GetCubebContext();
+cubeb* GetCubebContextUnlocked();
+void ReportCubebStreamInitFailure(bool aIsFirstStream);
+void ReportCubebBackendUsed();
+uint32_t GetCubebPlaybackLatencyInMilliseconds();
+Maybe<uint32_t> GetCubebMSGLatencyInFrames();
+bool CubebLatencyPrefSet();
+#if defined(__ANDROID__) && defined(MOZ_B2G)
+cubeb_stream_type ConvertChannelToCubebType(dom::AudioChannel aChannel);
+#endif
+void GetCurrentBackend(nsAString& aBackend);
+
+} // namespace CubebUtils
+} // namespace mozilla
+
+#endif // CubebUtils_h_