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037478c033
Backed out changeset 36f6b40dfa88 (bug 1410456) Backed out changeset 19f3248502d9 (bug 1410456) Backed out changeset 18ef18999175 (bug 1410456) Backed out changeset 0ec75a56b4c7 (bug 1410456) Backed out changeset f7eae1545d5e (bug 1410456) Backed out changeset d59060ecd24c (bug 1410456) Backed out changeset f996b9dce4a6 (bug 1410456) Backed out changeset 1f75636b5bce (bug 1410456) Backed out changeset c170d37b1a04 (bug 1410456)
59 lines
1.9 KiB
C++
59 lines
1.9 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 "mozilla/dom/AudioDeviceInfo.h"
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#include "mozilla/Maybe.h"
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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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// Get the bit mask of the connected audio device's preferred layout.
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uint32_t PreferredChannelMap(uint32_t aChannels);
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enum Side {
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Input,
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Output
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};
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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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Maybe<uint32_t> GetCubebMSGLatencyInFrames();
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bool CubebLatencyPrefSet();
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cubeb_channel_layout ConvertChannelMapToCubebLayout(uint32_t aChannelMap);
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void GetCurrentBackend(nsAString& aBackend);
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void GetPreferredChannelLayout(nsAString& aLayout);
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void GetDeviceCollection(nsTArray<RefPtr<AudioDeviceInfo>>& aDeviceInfos,
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Side aSide);
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cubeb_channel_layout GetPreferredChannelLayoutOrSMPTE(cubeb* context, uint32_t aChannels);
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} // namespace CubebUtils
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} // namespace mozilla
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#endif // CubebUtils_h_
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