blob: 81db3d8bc4d73badaad4000b9431771630f92f1f [file] [log] [blame]
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
#if (_MSC_VER >= 1400) // only include for VS 2005 and higher
#include "rtc_base/win32.h"
#include "modules/audio_device/audio_device_generic.h"
#include <wmcodecdsp.h> // CLSID_CWMAudioAEC
// (must be before audioclient.h)
#include <audioclient.h> // WASAPI
#include <audiopolicy.h>
#include <avrt.h> // Avrt
#include <endpointvolume.h>
#include <mediaobj.h> // IMediaObject
#include <mmdeviceapi.h> // MMDevice
#include "api/scoped_refptr.h"
#include "rtc_base/critical_section.h"
// Use Multimedia Class Scheduler Service (MMCSS) to boost the thread priority
#pragma comment(lib, "avrt.lib")
// AVRT function pointers
typedef BOOL(WINAPI* PAvRevertMmThreadCharacteristics)(HANDLE);
typedef HANDLE(WINAPI* PAvSetMmThreadCharacteristicsA)(LPCSTR, LPDWORD);
typedef BOOL(WINAPI* PAvSetMmThreadPriority)(HANDLE, AVRT_PRIORITY);
namespace webrtc {
const float MAX_CORE_SPEAKER_VOLUME = 255.0f;
const float MIN_CORE_SPEAKER_VOLUME = 0.0f;
const float MAX_CORE_MICROPHONE_VOLUME = 255.0f;
const float MIN_CORE_MICROPHONE_VOLUME = 0.0f;
// Utility class which initializes COM in the constructor (STA or MTA),
// and uninitializes COM in the destructor.
class ScopedCOMInitializer {
// Enum value provided to initialize the thread as an MTA instead of STA.
enum SelectMTA { kMTA };
// Constructor for STA initialization.
ScopedCOMInitializer() { Initialize(COINIT_APARTMENTTHREADED); }
// Constructor for MTA initialization.
explicit ScopedCOMInitializer(SelectMTA mta) {
~ScopedCOMInitializer() {
if (SUCCEEDED(hr_))
bool succeeded() const { return SUCCEEDED(hr_); }
void Initialize(COINIT init) { hr_ = CoInitializeEx(NULL, init); }
ScopedCOMInitializer(const ScopedCOMInitializer&);
void operator=(const ScopedCOMInitializer&);
class AudioDeviceWindowsCore : public AudioDeviceGeneric {
static bool CoreAudioIsSupported();
// Retrieve the currently utilized audio layer
virtual int32_t ActiveAudioLayer(
AudioDeviceModule::AudioLayer& audioLayer) const;
// Main initializaton and termination
virtual InitStatus Init();
virtual int32_t Terminate();
virtual bool Initialized() const;
// Device enumeration
virtual int16_t PlayoutDevices();
virtual int16_t RecordingDevices();
virtual int32_t PlayoutDeviceName(uint16_t index,
char name[kAdmMaxDeviceNameSize],
char guid[kAdmMaxGuidSize]);
virtual int32_t RecordingDeviceName(uint16_t index,
char name[kAdmMaxDeviceNameSize],
char guid[kAdmMaxGuidSize]);
// Device selection
virtual int32_t SetPlayoutDevice(uint16_t index);
virtual int32_t SetPlayoutDevice(AudioDeviceModule::WindowsDeviceType device);
virtual int32_t SetRecordingDevice(uint16_t index);
virtual int32_t SetRecordingDevice(
AudioDeviceModule::WindowsDeviceType device);
// Audio transport initialization
virtual int32_t PlayoutIsAvailable(bool& available);
virtual int32_t InitPlayout();
virtual bool PlayoutIsInitialized() const;
virtual int32_t RecordingIsAvailable(bool& available);
virtual int32_t InitRecording();
virtual bool RecordingIsInitialized() const;
// Audio transport control
virtual int32_t StartPlayout();
virtual int32_t StopPlayout();
virtual bool Playing() const;
virtual int32_t StartRecording();
virtual int32_t StopRecording();
virtual bool Recording() const;
// Audio mixer initialization
virtual int32_t InitSpeaker();
virtual bool SpeakerIsInitialized() const;
virtual int32_t InitMicrophone();
virtual bool MicrophoneIsInitialized() const;
// Speaker volume controls
virtual int32_t SpeakerVolumeIsAvailable(bool& available);
virtual int32_t SetSpeakerVolume(uint32_t volume);
virtual int32_t SpeakerVolume(uint32_t& volume) const;
virtual int32_t MaxSpeakerVolume(uint32_t& maxVolume) const;
virtual int32_t MinSpeakerVolume(uint32_t& minVolume) const;
// Microphone volume controls
virtual int32_t MicrophoneVolumeIsAvailable(bool& available);
virtual int32_t SetMicrophoneVolume(uint32_t volume);
virtual int32_t MicrophoneVolume(uint32_t& volume) const;
virtual int32_t MaxMicrophoneVolume(uint32_t& maxVolume) const;
virtual int32_t MinMicrophoneVolume(uint32_t& minVolume) const;
// Speaker mute control
virtual int32_t SpeakerMuteIsAvailable(bool& available);
virtual int32_t SetSpeakerMute(bool enable);
virtual int32_t SpeakerMute(bool& enabled) const;
// Microphone mute control
virtual int32_t MicrophoneMuteIsAvailable(bool& available);
virtual int32_t SetMicrophoneMute(bool enable);
virtual int32_t MicrophoneMute(bool& enabled) const;
// Stereo support
virtual int32_t StereoPlayoutIsAvailable(bool& available);
virtual int32_t SetStereoPlayout(bool enable);
virtual int32_t StereoPlayout(bool& enabled) const;
virtual int32_t StereoRecordingIsAvailable(bool& available);
virtual int32_t SetStereoRecording(bool enable);
virtual int32_t StereoRecording(bool& enabled) const;
// Delay information and control
virtual int32_t PlayoutDelay(uint16_t& delayMS) const;
virtual bool BuiltInAECIsAvailable() const;
virtual int32_t EnableBuiltInAEC(bool enable);
virtual void AttachAudioBuffer(AudioDeviceBuffer* audioBuffer);
bool KeyPressed() const;
private: // avrt function pointers
PAvRevertMmThreadCharacteristics _PAvRevertMmThreadCharacteristics;
PAvSetMmThreadCharacteristicsA _PAvSetMmThreadCharacteristicsA;
PAvSetMmThreadPriority _PAvSetMmThreadPriority;
HMODULE _avrtLibrary;
bool _winSupportAvrt;
private: // thread functions
DWORD InitCaptureThreadPriority();
void RevertCaptureThreadPriority();
static DWORD WINAPI WSAPICaptureThread(LPVOID context);
DWORD DoCaptureThread();
static DWORD WINAPI WSAPICaptureThreadPollDMO(LPVOID context);
DWORD DoCaptureThreadPollDMO();
static DWORD WINAPI WSAPIRenderThread(LPVOID context);
DWORD DoRenderThread();
void _Lock();
void _UnLock();
int SetDMOProperties();
int SetBoolProperty(IPropertyStore* ptrPS,
int SetVtI4Property(IPropertyStore* ptrPS, REFPROPERTYKEY key, LONG value);
int32_t _EnumerateEndpointDevicesAll(EDataFlow dataFlow) const;
void _TraceCOMError(HRESULT hr) const;
int32_t _RefreshDeviceList(EDataFlow dir);
int16_t _DeviceListCount(EDataFlow dir);
int32_t _GetDefaultDeviceName(EDataFlow dir,
ERole role,
LPWSTR szBuffer,
int bufferLen);
int32_t _GetListDeviceName(EDataFlow dir,
int index,
LPWSTR szBuffer,
int bufferLen);
int32_t _GetDeviceName(IMMDevice* pDevice, LPWSTR pszBuffer, int bufferLen);
int32_t _GetListDeviceID(EDataFlow dir,
int index,
LPWSTR szBuffer,
int bufferLen);
int32_t _GetDefaultDeviceID(EDataFlow dir,
ERole role,
LPWSTR szBuffer,
int bufferLen);
int32_t _GetDefaultDeviceIndex(EDataFlow dir, ERole role, int* index);
int32_t _GetDeviceID(IMMDevice* pDevice, LPWSTR pszBuffer, int bufferLen);
int32_t _GetDefaultDevice(EDataFlow dir, ERole role, IMMDevice** ppDevice);
int32_t _GetListDevice(EDataFlow dir, int index, IMMDevice** ppDevice);
int32_t InitRecordingDMO();
ScopedCOMInitializer _comInit;
AudioDeviceBuffer* _ptrAudioBuffer;
rtc::CriticalSection _critSect;
rtc::CriticalSection _volumeMutex;
IMMDeviceEnumerator* _ptrEnumerator;
IMMDeviceCollection* _ptrRenderCollection;
IMMDeviceCollection* _ptrCaptureCollection;
IMMDevice* _ptrDeviceOut;
IMMDevice* _ptrDeviceIn;
IAudioClient* _ptrClientOut;
IAudioClient* _ptrClientIn;
IAudioRenderClient* _ptrRenderClient;
IAudioCaptureClient* _ptrCaptureClient;
IAudioEndpointVolume* _ptrCaptureVolume;
ISimpleAudioVolume* _ptrRenderSimpleVolume;
// DirectX Media Object (DMO) for the built-in AEC.
rtc::scoped_refptr<IMediaObject> _dmo;
rtc::scoped_refptr<IMediaBuffer> _mediaBuffer;
bool _builtInAecEnabled;
HANDLE _hRenderSamplesReadyEvent;
HANDLE _hPlayThread;
HANDLE _hRenderStartedEvent;
HANDLE _hShutdownRenderEvent;
HANDLE _hCaptureSamplesReadyEvent;
HANDLE _hRecThread;
HANDLE _hCaptureStartedEvent;
HANDLE _hShutdownCaptureEvent;
HANDLE _hMmTask;
UINT _playAudioFrameSize;
uint32_t _playSampleRate;
uint32_t _devicePlaySampleRate;
uint32_t _playBlockSize;
uint32_t _devicePlayBlockSize;
uint32_t _playChannels;
uint32_t _sndCardPlayDelay;
UINT64 _writtenSamples;
UINT64 _readSamples;
UINT _recAudioFrameSize;
uint32_t _recSampleRate;
uint32_t _recBlockSize;
uint32_t _recChannels;
uint16_t _recChannelsPrioList[3];
uint16_t _playChannelsPrioList[2];
LARGE_INTEGER _perfCounterFreq;
double _perfCounterFactor;
bool _initialized;
bool _recording;
bool _playing;
bool _recIsInitialized;
bool _playIsInitialized;
bool _speakerIsInitialized;
bool _microphoneIsInitialized;
bool _usingInputDeviceIndex;
bool _usingOutputDeviceIndex;
AudioDeviceModule::WindowsDeviceType _inputDevice;
AudioDeviceModule::WindowsDeviceType _outputDevice;
uint16_t _inputDeviceIndex;
uint16_t _outputDeviceIndex;
#endif // #if (_MSC_VER >= 1400)
} // namespace webrtc