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/*++
Copyright (c) Microsoft Corporation All Rights Reserved
Module Name:
minwavertstream.h
Abstract:
Definition of wavert miniport class.
--*/
#ifndef _SIMPLEAUDIOSAMPLE_MINWAVERTSTREAM_H_
#define _SIMPLEAUDIOSAMPLE_MINWAVERTSTREAM_H_
#include "savedata.h"
#include "ToneGenerator.h"
//
// Structure to store notifications events in a protected list
//
typedef struct _NotificationListEntry
{
LIST_ENTRY ListEntry;
PKEVENT NotificationEvent;
} NotificationListEntry;
EXT_CALLBACK TimerNotifyRT;
//=============================================================================
// Referenced Forward
//=============================================================================
class CMiniportWaveRT;
typedef CMiniportWaveRT *PCMiniportWaveRT;
//=============================================================================
// Classes
//=============================================================================
///////////////////////////////////////////////////////////////////////////////
// CMiniportWaveRTStream
//
class CMiniportWaveRTStream :
public IDrmAudioStream,
public IMiniportWaveRTStreamNotification,
public IMiniportWaveRTInputStream,
public IMiniportWaveRTOutputStream,
public CUnknown
{
protected:
PPORTWAVERTSTREAM m_pPortStream;
LIST_ENTRY m_NotificationList;
PEX_TIMER m_pNotificationTimer;
ULONG m_ulNotificationIntervalMs;
ULONG m_ulCurrentWritePosition;
LONG m_IsCurrentWritePositionUpdated;
public:
DECLARE_STD_UNKNOWN();
DEFINE_STD_CONSTRUCTOR(CMiniportWaveRTStream);
~CMiniportWaveRTStream();
IMP_IMiniportWaveRTStream;
IMP_IMiniportWaveRTStreamNotification;
IMP_IMiniportWaveRTInputStream;
IMP_IMiniportWaveRTOutputStream;
IMP_IMiniportWaveRT;
IMP_IDrmAudioStream;
NTSTATUS Init
(
_In_ PCMiniportWaveRT Miniport,
_In_ PPORTWAVERTSTREAM Stream,
_In_ ULONG Channel,
_In_ BOOLEAN Capture,
_In_ PKSDATAFORMAT DataFormat,
_In_ GUID SignalProcessingMode
);
// Friends
friend class CMiniportWaveRT;
friend EXT_CALLBACK TimerNotifyRT;
protected:
CMiniportWaveRT* m_pMiniport;
ULONG m_ulPin;
BOOLEAN m_bCapture;
BOOLEAN m_bUnregisterStream;
ULONG m_ulDmaBufferSize;
BYTE* m_pDmaBuffer;
ULONG m_ulNotificationsPerBuffer;
KSSTATE m_KsState;
PKTIMER m_pTimer;
PRKDPC m_pDpc;
ULONGLONG m_ullPlayPosition;
ULONGLONG m_ullWritePosition;
ULONGLONG m_ullLinearPosition;
ULONGLONG m_ullPresentationPosition;
ULONG m_ulLastOsReadPacket;
ULONG m_ulLastOsWritePacket;
LONGLONG m_llPacketCounter;
ULONGLONG m_ullDmaTimeStamp;
LARGE_INTEGER m_ullPerformanceCounterFrequency;
ULONGLONG m_hnsElapsedTimeCarryForward;
ULONGLONG m_ullLastDPCTimeStamp;
ULONGLONG m_hnsDPCTimeCarryForward;
ULONG m_byteDisplacementCarryForward;
ULONG m_ulDmaMovementRate;
BOOL m_bLfxEnabled;
PBOOL m_pbMuted;
PLONG m_plVolumeLevel;
PLONG m_plPeakMeter;
PWAVEFORMATEXTENSIBLE m_pWfExt;
ULONG m_ulContentId;
CSaveData m_SaveData;
ToneGenerator m_ToneGenerator;
GUID m_SignalProcessingMode;
BOOLEAN m_bEoSReceived;
BOOLEAN m_bLastBufferRendered;
KSPIN_LOCK m_PositionSpinLock;
// Member variable as config params for tone generator
ULONG m_ulHostCaptureToneFrequency;
// If abs(m_dwHostCaptureToneAmplitude) + abs(m_dwHostCaptureToneDCValue) > 100
// m_dwHostCaptureToneDCValue will be compensated to make the sum equal to 100
DWORD m_dwHostCaptureToneAmplitude; // must be between -100 to 100
DWORD m_dwLoopbackCaptureToneAmplitude; // must be between -100 to 100
DWORD m_dwHostCaptureToneDCOffset; // must be between -100 to 100
DWORD m_dwLoopbackCaptureToneDCOffset; // must be between -100 to 100
DWORD m_dwHostCaptureToneInitialPhase; // must be between -31416 to 31416
DWORD m_dwLoopbackCaptureToneInitialPhase; // must be between -31416 to 31416
// Member variable as config params for tone generator
public:
//presentation
NTSTATUS GetPresentationPosition
(
_Out_ KSAUDIO_PRESENTATION_POSITION *_pPresentationPosition
);
ULONG GetCurrentWaveRTWritePosition()
{
return m_ulCurrentWritePosition;
};
// To support simple underrun validation.
BOOL IsCurrentWaveRTWritePositionUpdated()
{
return InterlockedExchange(&m_IsCurrentWritePositionUpdated, 0) ? TRUE : FALSE;
};
GUID GetSignalProcessingMode()
{
return m_SignalProcessingMode;
}
private:
//
// Helper functions.
//
#pragma code_seg()
VOID WriteBytes
(
_In_ ULONG ByteDisplacement
);
VOID ReadBytes
(
_In_ ULONG ByteDisplacement
);
VOID UpdatePosition
(
_In_ LARGE_INTEGER ilQPC
);
NTSTATUS SetCurrentWritePositionInternal
(
_In_ ULONG ulCurrentWritePosition
);
NTSTATUS GetPositions
(
_Out_opt_ ULONGLONG * _pullLinearBufferPosition,
_Out_opt_ ULONGLONG * _pullPresentationPosition,
_Out_opt_ LARGE_INTEGER * _pliQPCTime
);
NTSTATUS ReadRegistrySettings();
};
typedef CMiniportWaveRTStream *PCMiniportWaveRTStream;
#endif // _SIMPLEAUDIOSAMPLE_MINWAVERTSTREAM_H_
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