зеркало из https://github.com/mozilla/gecko-dev.git
63 строки
1.8 KiB
C++
63 строки
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#if !defined(CubebUtils_h_)
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#define CubebUtils_h_
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#include "cubeb/cubeb.h"
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#include "nsString.h"
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#include "mozilla/RefPtr.h"
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class AudioDeviceInfo;
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namespace mozilla {
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namespace CubebUtils {
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typedef cubeb_devid AudioDeviceID;
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// Initialize Audio Library. Some Audio backends require initializing the
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// library before using it.
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void InitLibrary();
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// Shutdown Audio Library. Some Audio backends require shutting down the
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// library after using it.
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void ShutdownLibrary();
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// Returns the maximum number of channels supported by the audio hardware.
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uint32_t MaxNumberOfChannels();
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// Get the sample rate the hardware/mixer runs at. Thread safe.
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uint32_t PreferredSampleRate();
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enum Side { Input, Output };
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double GetVolumeScale();
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bool GetFirstStream();
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cubeb* GetCubebContext();
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void ReportCubebStreamInitFailure(bool aIsFirstStream);
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void ReportCubebBackendUsed();
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uint32_t GetCubebPlaybackLatencyInMilliseconds();
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uint32_t GetCubebMSGLatencyInFrames(cubeb_stream_params* params);
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bool CubebLatencyPrefSet();
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void GetCurrentBackend(nsAString& aBackend);
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void GetDeviceCollection(nsTArray<RefPtr<AudioDeviceInfo>>& aDeviceInfos,
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Side aSide);
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cubeb_stream_prefs GetDefaultStreamPrefs();
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char* GetForcedOutputDevice();
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#ifdef MOZ_WIDGET_ANDROID
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uint32_t AndroidGetAudioOutputSampleRate();
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uint32_t AndroidGetAudioOutputFramesPerBuffer();
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#endif
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#ifdef ENABLE_SET_CUBEB_BACKEND
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void ForceSetCubebContext(cubeb* aCubebContext);
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#endif
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} // namespace CubebUtils
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} // namespace mozilla
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#endif // CubebUtils_h_
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