зеркало из https://github.com/mozilla/gecko-dev.git
107 строки
3.7 KiB
C++
107 строки
3.7 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 "AudioSampleFormat.h"
|
|
# include "nsString.h"
|
|
|
|
class AudioDeviceInfo;
|
|
|
|
MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(cubeb_stream_prefs)
|
|
|
|
namespace mozilla {
|
|
|
|
class AudioThreadRegistry;
|
|
|
|
namespace CubebUtils {
|
|
|
|
typedef cubeb_devid AudioDeviceID;
|
|
|
|
template <AudioSampleFormat N>
|
|
struct ToCubebFormat {
|
|
static const cubeb_sample_format value = CUBEB_SAMPLE_FLOAT32NE;
|
|
};
|
|
|
|
template <>
|
|
struct ToCubebFormat<AUDIO_FORMAT_S16> {
|
|
static const cubeb_sample_format value = CUBEB_SAMPLE_S16NE;
|
|
};
|
|
|
|
// 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();
|
|
|
|
bool SandboxEnabled();
|
|
|
|
// Returns the global instance of AudioThreadRegistry. Initialized and
|
|
// destroying in Init/ShutdownLibrary(), and safe from all threads.
|
|
AudioThreadRegistry* GetAudioThreadRegistry();
|
|
|
|
// 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();
|
|
|
|
// Initialize a cubeb stream. A pass through wrapper for cubeb_stream_init,
|
|
// that can simulate streams that are very slow to start, by setting the pref
|
|
// media.cubeb.slow_stream_init_ms.
|
|
int CubebStreamInit(cubeb* context, cubeb_stream** stream,
|
|
char const* stream_name, cubeb_devid input_device,
|
|
cubeb_stream_params* input_stream_params,
|
|
cubeb_devid output_device,
|
|
cubeb_stream_params* output_stream_params,
|
|
uint32_t latency_frames, cubeb_data_callback data_callback,
|
|
cubeb_state_callback state_callback, void* user_ptr);
|
|
|
|
enum Side { Input, Output };
|
|
|
|
double GetVolumeScale();
|
|
bool GetFirstStream();
|
|
cubeb* GetCubebContext();
|
|
void ReportCubebStreamInitFailure(bool aIsFirstStream);
|
|
void ReportCubebBackendUsed();
|
|
uint32_t GetCubebPlaybackLatencyInMilliseconds();
|
|
uint32_t GetCubebMTGLatencyInFrames(cubeb_stream_params* params);
|
|
bool CubebLatencyPrefSet();
|
|
void GetCurrentBackend(nsAString& aBackend);
|
|
cubeb_stream_prefs GetDefaultStreamPrefs(cubeb_device_type aType);
|
|
char* GetForcedOutputDevice();
|
|
// No-op on all platforms but Android, where it tells the device's AudioManager
|
|
// to switch to "communication mode", which might change audio routing,
|
|
// bluetooth communication type, etc.
|
|
void SetInCommunication(bool aInCommunication);
|
|
// Returns true if the output streams should be routed like a stream containing
|
|
// voice data, and not generic audio. This can influence audio processing and
|
|
// device selection.
|
|
bool RouteOutputAsVoice();
|
|
// Returns, in seconds, the roundtrip latency Gecko thinks there is between the
|
|
// default input and output devices. This is for diagnosing purposes, the
|
|
// latency figures are best used directly from the cubeb streams themselves, as
|
|
// the devices being used matter. This is blocking.
|
|
bool EstimatedRoundTripLatencyDefaultDevices(double* aMean, double* aStdDev);
|
|
|
|
# ifdef MOZ_WIDGET_ANDROID
|
|
uint32_t AndroidGetAudioOutputSampleRate();
|
|
uint32_t AndroidGetAudioOutputFramesPerBuffer();
|
|
# endif
|
|
|
|
# ifdef ENABLE_SET_CUBEB_BACKEND
|
|
void ForceSetCubebContext(cubeb* aCubebContext);
|
|
# endif
|
|
} // namespace CubebUtils
|
|
} // namespace mozilla
|
|
|
|
#endif // CubebUtils_h_
|