172 lines
5.5 KiB
C++
172 lines
5.5 KiB
C++
/*++
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Copyright (c) 1997-2000 Microsoft Corporation All Rights Reserved
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Module Name:
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basewave.h
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Abstract:
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Definition of base wavecyclic and wavecyclic stream class.
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--*/
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#ifndef _MSVAD_BASEWAVE_H_
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#define _MSVAD_BASEWAVE_H_
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#include "savedata.h"
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//=============================================================================
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// Referenced Forward
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//=============================================================================
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void
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TimerNotify
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(
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IN PKDPC Dpc,
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IN PVOID DeferredContext,
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IN PVOID SA1,
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IN PVOID SA2
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);
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class CMiniportWaveCyclicStreamMSVAD;
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typedef CMiniportWaveCyclicStreamMSVAD *PCMiniportWaveCyclicStreamMSVAD;
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//=============================================================================
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// Classes
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//=============================================================================
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///////////////////////////////////////////////////////////////////////////////
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// CMiniportWaveCyclicMSVAD
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// This is the common base class for all MSVAD samples. It implements basic
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// functionality.
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class CMiniportWaveCyclicMSVAD
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{
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protected:
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PADAPTERCOMMON m_AdapterCommon; // Adapter common object
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PPORTWAVECYCLIC m_Port; // Callback interface
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PPCFILTER_DESCRIPTOR m_FilterDescriptor; // Filter descriptor
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ULONG m_NotificationInterval; // milliseconds.
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ULONG m_SamplingFrequency; // Frames per second.
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PSERVICEGROUP m_ServiceGroup; // For notification.
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KMUTEX m_SampleRateSync; // Sync for sample rate
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ULONG m_MaxDmaBufferSize; // Dma buffer size.
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// All the below members should be updated by the child classes
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//
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ULONG m_MaxOutputStreams; // Max stream caps
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ULONG m_MaxInputStreams;
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ULONG m_MaxTotalStreams;
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ULONG m_MinChannels; // Format caps
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ULONG m_MaxChannelsPcm;
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ULONG m_MinBitsPerSamplePcm;
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ULONG m_MaxBitsPerSamplePcm;
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ULONG m_MinSampleRatePcm;
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ULONG m_MaxSampleRatePcm;
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protected:
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NTSTATUS ValidateFormat
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(
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IN PKSDATAFORMAT pDataFormat
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);
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NTSTATUS ValidatePcm
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(
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IN PWAVEFORMATEX pWfx
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);
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public:
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CMiniportWaveCyclicMSVAD();
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~CMiniportWaveCyclicMSVAD();
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STDMETHODIMP GetDescription
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(
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OUT PPCFILTER_DESCRIPTOR *Description
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);
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STDMETHODIMP Init
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( IN PUNKNOWN UnknownAdapter,
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IN PRESOURCELIST ResourceList,
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IN PPORTWAVECYCLIC Port
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);
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NTSTATUS PropertyHandlerCpuResources
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(
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IN PPCPROPERTY_REQUEST PropertyRequest
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);
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NTSTATUS PropertyHandlerGeneric
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(
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IN PPCPROPERTY_REQUEST PropertyRequest
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);
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// Friends
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friend class CMiniportWaveCyclicStreamMSVAD;
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friend class CMiniportTopologyMSVAD;
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friend void TimerNotify
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(
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IN PKDPC Dpc,
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IN PVOID DeferredContext,
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IN PVOID SA1,
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IN PVOID SA2
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);
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};
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typedef CMiniportWaveCyclicMSVAD *PCMiniportWaveCyclicMSVAD;
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///////////////////////////////////////////////////////////////////////////////
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// CMiniportWaveCyclicStreamMSVAD
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// This is the common base class for all MSVAD samples. It implements basic
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// functionality for wavecyclic streams.
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class CMiniportWaveCyclicStreamMSVAD :
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public IMiniportWaveCyclicStream,
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public IDmaChannel
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{
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protected:
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PCMiniportWaveCyclicMSVAD m_pMiniport; // Miniport that created us
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BOOLEAN m_fCapture; // Capture or render.
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BOOLEAN m_fFormat16Bit; // 16- or 8-bit samples.
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BOOLEAN m_fFormatStereo; // Two or one channel.
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KSSTATE m_ksState; // Stop, pause, run.
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ULONG m_ulPin; // Pin Id.
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PRKDPC m_pDpc; // Deferred procedure call object
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PKTIMER m_pTimer; // Timer object
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BOOLEAN m_fDmaActive; // Dma currently active?
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ULONG m_ulDmaPosition; // Position in Dma
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PVOID m_pvDmaBuffer; // Dma buffer pointer
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ULONG m_ulDmaBufferSize; // Size of dma buffer
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ULONG m_ulDmaMovementRate;// Rate of transfer specific to system
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ULONGLONG m_ullDmaTimeStamp; // Dma time elasped
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CSaveData m_SaveData; // Object to save settings.
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public:
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CMiniportWaveCyclicStreamMSVAD();
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~CMiniportWaveCyclicStreamMSVAD();
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IMP_IMiniportWaveCyclicStream;
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IMP_IDmaChannel;
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NTSTATUS Init
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(
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IN PCMiniportWaveCyclicMSVAD Miniport,
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IN ULONG Pin,
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IN BOOLEAN Capture,
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IN PKSDATAFORMAT DataFormat
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);
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// Friends
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friend class CMiniportWaveCyclicMSVAD;
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};
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typedef CMiniportWaveCyclicStreamMSVAD *PCMiniportWaveCyclicStreamMSVAD;
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#endif
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