/* -*- 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(); uint32_t GetCubebPlaybackLatencyInMilliseconds(); Maybe<uint32_t> GetCubebMSGLatencyInFrames(); bool CubebLatencyPrefSet(); void GetCurrentBackend(nsAString& aBackend); } // namespace CubebUtils } // namespace mozilla #endif // CubebUtils_h_