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/*
* 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.
*/
#ifndef WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_WAVE_WIN_H
#define WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_WAVE_WIN_H
#include "webrtc/modules/audio_device/audio_device_generic.h"
#include "webrtc/modules/audio_device/win/audio_mixer_manager_win.h"
#include "webrtc/system_wrappers/include/thread_wrapper.h"
#pragma comment( lib, "winmm.lib" )
namespace webrtc {
class EventTimerWrapper;
class EventWrapper;
const uint32_t TIMER_PERIOD_MS = 2;
const uint32_t REC_CHECK_TIME_PERIOD_MS = 4;
const uint16_t REC_PUT_BACK_DELAY = 4;
const uint32_t N_REC_SAMPLES_PER_SEC = 48000;
const uint32_t N_PLAY_SAMPLES_PER_SEC = 48000;
const uint32_t N_REC_CHANNELS = 1; // default is mono recording
const uint32_t N_PLAY_CHANNELS = 2; // default is stereo playout
// NOTE - CPU load will not be correct for other sizes than 10ms
const uint32_t REC_BUF_SIZE_IN_SAMPLES = (N_REC_SAMPLES_PER_SEC/100);
const uint32_t PLAY_BUF_SIZE_IN_SAMPLES = (N_PLAY_SAMPLES_PER_SEC/100);
enum { N_BUFFERS_IN = 200 };
enum { N_BUFFERS_OUT = 200 };
class AudioDeviceWindowsWave : public AudioDeviceGeneric
{
public:
AudioDeviceWindowsWave(const int32_t id);
~AudioDeviceWindowsWave();
// Retrieve the currently utilized audio layer
virtual int32_t ActiveAudioLayer(AudioDeviceModule::AudioLayer& audioLayer) const;
// Main initializaton and termination
virtual int32_t 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;
// Microphone Automatic Gain Control (AGC)
virtual int32_t SetAGC(bool enable);
virtual bool AGC() const;
// Volume control based on the Windows Wave API (Windows only)
virtual int32_t SetWaveOutVolume(uint16_t volumeLeft, uint16_t volumeRight);
virtual int32_t WaveOutVolume(uint16_t& volumeLeft, uint16_t& volumeRight) 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;
virtual int32_t SpeakerVolumeStepSize(uint16_t& stepSize) 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;
virtual int32_t MicrophoneVolumeStepSize(uint16_t& stepSize) 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;
// Microphone boost control
virtual int32_t MicrophoneBoostIsAvailable(bool& available);
virtual int32_t SetMicrophoneBoost(bool enable);
virtual int32_t MicrophoneBoost(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 SetPlayoutBuffer(const AudioDeviceModule::BufferType type, uint16_t sizeMS);
virtual int32_t PlayoutBuffer(AudioDeviceModule::BufferType& type, uint16_t& sizeMS) const;
virtual int32_t PlayoutDelay(uint16_t& delayMS) const;
virtual int32_t RecordingDelay(uint16_t& delayMS) const;
// CPU load
virtual int32_t CPULoad(uint16_t& load) const;
public:
virtual bool PlayoutWarning() const;
virtual bool PlayoutError() const;
virtual bool RecordingWarning() const;
virtual bool RecordingError() const;
virtual void ClearPlayoutWarning();
virtual void ClearPlayoutError();
virtual void ClearRecordingWarning();
virtual void ClearRecordingError();
public:
virtual void AttachAudioBuffer(AudioDeviceBuffer* audioBuffer);
private:
void Lock() { _critSect.Enter(); };
void UnLock() { _critSect.Leave(); };
int32_t Id() {return _id;}
bool IsUsingOutputDeviceIndex() const {return _usingOutputDeviceIndex;}
AudioDeviceModule::WindowsDeviceType OutputDevice() const {return _outputDevice;}
uint16_t OutputDeviceIndex() const {return _outputDeviceIndex;}
bool IsUsingInputDeviceIndex() const {return _usingInputDeviceIndex;}
AudioDeviceModule::WindowsDeviceType InputDevice() const {return _inputDevice;}
uint16_t InputDeviceIndex() const {return _inputDeviceIndex;}
private:
inline int32_t InputSanityCheckAfterUnlockedPeriod() const;
inline int32_t OutputSanityCheckAfterUnlockedPeriod() const;
private:
bool KeyPressed() const;
private:
int32_t EnumeratePlayoutDevices();
int32_t EnumerateRecordingDevices();
void TraceSupportFlags(DWORD dwSupport) const;
void TraceWaveInError(MMRESULT error) const;
void TraceWaveOutError(MMRESULT error) const;
int32_t PrepareStartRecording();
int32_t PrepareStartPlayout();
int32_t RecProc(LONGLONG& consumedTime);
int PlayProc(LONGLONG& consumedTime);
int32_t GetPlayoutBufferDelay(uint32_t& writtenSamples, uint32_t& playedSamples);
int32_t GetRecordingBufferDelay(uint32_t& readSamples, uint32_t& recSamples);
int32_t Write(int8_t* data, uint16_t nSamples);
int32_t GetClockDrift(const uint32_t plSamp, const uint32_t rcSamp);
int32_t MonitorRecording(const uint32_t time);
int32_t RestartTimerIfNeeded(const uint32_t time);
private:
static bool ThreadFunc(void*);
bool ThreadProcess();
static DWORD WINAPI GetCaptureVolumeThread(LPVOID context);
DWORD DoGetCaptureVolumeThread();
static DWORD WINAPI SetCaptureVolumeThread(LPVOID context);
DWORD DoSetCaptureVolumeThread();
private:
AudioDeviceBuffer* _ptrAudioBuffer;
CriticalSectionWrapper& _critSect;
EventTimerWrapper& _timeEvent;
EventWrapper& _recStartEvent;
EventWrapper& _playStartEvent;
HANDLE _hGetCaptureVolumeThread;
HANDLE _hShutdownGetVolumeEvent;
HANDLE _hSetCaptureVolumeThread;
HANDLE _hShutdownSetVolumeEvent;
HANDLE _hSetCaptureVolumeEvent;
rtc::scoped_ptr<ThreadWrapper> _ptrThread;
CriticalSectionWrapper& _critSectCb;
int32_t _id;
AudioMixerManager _mixerManager;
bool _usingInputDeviceIndex;
bool _usingOutputDeviceIndex;
AudioDeviceModule::WindowsDeviceType _inputDevice;
AudioDeviceModule::WindowsDeviceType _outputDevice;
uint16_t _inputDeviceIndex;
uint16_t _outputDeviceIndex;
bool _inputDeviceIsSpecified;
bool _outputDeviceIsSpecified;
WAVEFORMATEX _waveFormatIn;
WAVEFORMATEX _waveFormatOut;
HWAVEIN _hWaveIn;
HWAVEOUT _hWaveOut;
WAVEHDR _waveHeaderIn[N_BUFFERS_IN];
WAVEHDR _waveHeaderOut[N_BUFFERS_OUT];
uint8_t _recChannels;
uint8_t _playChannels;
uint16_t _recBufCount;
uint16_t _recDelayCount;
uint16_t _recPutBackDelay;
int8_t _recBuffer[N_BUFFERS_IN][4*REC_BUF_SIZE_IN_SAMPLES];
int8_t _playBuffer[N_BUFFERS_OUT][4*PLAY_BUF_SIZE_IN_SAMPLES];
AudioDeviceModule::BufferType _playBufType;
private:
bool _initialized;
bool _recording;
bool _playing;
bool _recIsInitialized;
bool _playIsInitialized;
bool _startRec;
bool _stopRec;
bool _startPlay;
bool _stopPlay;
bool _AGC;
private:
uint32_t _prevPlayTime;
uint32_t _prevRecTime;
uint32_t _prevTimerCheckTime;
uint16_t _playBufCount; // playout buffer index
uint16_t _dTcheckPlayBufDelay; // dT for check of play buffer, {2,5,10} [ms]
uint16_t _playBufDelay; // playback delay
uint16_t _playBufDelayFixed; // fixed playback delay
uint16_t _minPlayBufDelay; // minimum playback delay
uint16_t _MAX_minBuffer; // level of (adaptive) min threshold must be < _MAX_minBuffer
int32_t _erZeroCounter; // counts "buffer-is-empty" events
int32_t _intro;
int32_t _waitCounter;
uint32_t _writtenSamples;
uint32_t _writtenSamplesOld;
uint32_t _playedSamplesOld;
uint32_t _sndCardPlayDelay;
uint32_t _sndCardRecDelay;
uint32_t _plSampOld;
uint32_t _rcSampOld;
uint32_t _read_samples;
uint32_t _read_samples_old;
uint32_t _rec_samples_old;
// State that detects driver problems:
int32_t _dc_diff_mean;
int32_t _dc_y_prev;
int32_t _dc_penalty_counter;
int32_t _dc_prevtime;
uint32_t _dc_prevplay;
uint32_t _recordedBytes; // accumulated #recorded bytes (reset periodically)
uint32_t _prevRecByteCheckTime; // time when we last checked the recording process
// CPU load measurements
LARGE_INTEGER _perfFreq;
LONGLONG _playAcc; // accumulated time for playout callback
float _avgCPULoad; // average total (rec+play) CPU load
int32_t _wrapCounter;
int32_t _useHeader;
int16_t _timesdwBytes;
int32_t _no_of_msecleft_warnings;
int32_t _writeErrors;
int32_t _timerFaults;
int32_t _timerRestartAttempts;
uint16_t _playWarning;
uint16_t _playError;
uint16_t _recWarning;
uint16_t _recError;
uint32_t _newMicLevel;
uint32_t _minMicVolume;
uint32_t _maxMicVolume;
};
} // namespace webrtc
#endif // WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_WAVE_WIN_H
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