зеркало из https://github.com/mozilla/gecko-dev.git
60 строки
1.8 KiB
C++
60 строки
1.8 KiB
C++
/* -*- 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/AudioDeviceInfo.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();
|
|
|
|
// Get the bit mask of the connected audio device's preferred layout.
|
|
uint32_t PreferredChannelMap(uint32_t aChannels);
|
|
|
|
enum Side {
|
|
Input,
|
|
Output
|
|
};
|
|
|
|
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();
|
|
cubeb_channel_layout ConvertChannelMapToCubebLayout(uint32_t aChannelMap);
|
|
void GetCurrentBackend(nsAString& aBackend);
|
|
void GetPreferredChannelLayout(nsAString& aLayout);
|
|
void GetDeviceCollection(nsTArray<RefPtr<AudioDeviceInfo>>& aDeviceInfos,
|
|
Side aSide);
|
|
} // namespace CubebUtils
|
|
} // namespace mozilla
|
|
|
|
#endif // CubebUtils_h_
|