dsplaybackdriver.h

WinCE 3.0 BSP, 包含Inter SA1110, Intel_815E, Advantech_PCM9574 等

//////////////////////////////////////////////////////////////////////////////
/*****************************************************************************

Copyright (c) 1999 Microsoft Corporation

Module Name:

	DsPlaybackDriver.h

Abstract:

	Declaration file for the 

			DsPlaybackDriver

	class.


Revision History:

	mmaguire 08/19/99 

*****************************************************************************/
//////////////////////////////////////////////////////////////////////////////
#ifndef _DSPLAYBACKDRIVER_H_
#define _DSPLAYBACKDRIVER_H_

//////////////////////////////////////////////////////////////////////////////
// BEGIN INCLUDES
//
// standard includes:
//
//
// where we can find declarations needed in this file:
//
#include "DsDriverBuffer.h"
//
// END INCLUDES
//////////////////////////////////////////////////////////////////////////////


class DsPlaybackDriverBuffer;


//////////////////////////////////////////////////////////////////////////////
/*****************************************************************************

*****************************************************************************/
//////////////////////////////////////////////////////////////////////////////
class DsPlaybackDriver : public IDsDriver
{

public:


	//////////////////////////////////////////////////////////////////////////////
	/*****************************************************************************
	IUnknown implementation
	*****************************************************************************/
	//////////////////////////////////////////////////////////////////////////////
    STDMETHOD(QueryInterface)       (THIS_ REFIID, LPVOID FAR *);
    STDMETHOD_(ULONG,AddRef)        (THIS);
    STDMETHOD_(ULONG,Release)       (THIS);
    
	//////////////////////////////////////////////////////////////////////////////
	/*****************************************************************************
    IDsDriver methods
	*****************************************************************************/
	//////////////////////////////////////////////////////////////////////////////
    STDMETHOD(GetDriverDesc)        (THIS_ PDSDRIVERDESC );
    STDMETHOD(Open)                 (THIS );
    STDMETHOD(Close)                (THIS );
    STDMETHOD(GetCaps)              (THIS_ PDSDRIVERCAPS );
    STDMETHOD(CreateSoundBuffer)    (THIS_ LPWAVEFORMATEX, DWORD, DWORD, LPDWORD, LPBYTE *, LPVOID * );
    STDMETHOD(DuplicateSoundBuffer) (THIS_ PIDSDRIVERBUFFER, LPVOID * );


	//////////////////////////////////////////////////////////////////////////////
	/*****************************************************************************
    methods public but not exposed on any interfaces
	*****************************************************************************/
	//////////////////////////////////////////////////////////////////////////////



	//////////////////////////////////////////////////////////////////////////////
	/*****************************************************************************
	Constructor, destructor
	*****************************************************************************/
	//////////////////////////////////////////////////////////////////////////////
	DsPlaybackDriver(
    	/* [out] */ HRESULT &hr);

	~DsPlaybackDriver();



	// Put any public data specific to the device here where the other classes
	// in the driver can access it.

private:

	ULONG m_ulRefCount;

	// Since these will only be called from within this class, they do
	// not need to be published.

	// Put any private data specific to the device here.
	// Hide stuff here that the rest of the driver doesn't need to know about.

	// Note that drivers need to be thread safe, so we must protect 
	// critical data so it works under access from multiple threads.

protected:
	UINT m_nActiveBuffers;
	CCX5530Audio* m_pCX5530Audio;
	CRITICAL_SECTION m_csSoundBuffer;
	bool m_bOpened;
	DsPlaybackDriverBuffer **m_pDriverBuffers;
};


#endif //_DSPLAYBACKDRIVER_H_