mixdrv.h

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

/*
	Copyright (c) 1993, 1994 Microsoft Corporation, All rights reserved
	
	Module Name:
		mixdrv.h
	
	Abstract:
		Declarations for the audio mixer drv 
		
	Revision History :

	Mar 31, 1999
*/


#ifndef __MIXDRV_H__
#define __MIXDRV_H__

// driver functions
#ifdef __cplusplus
extern "C" 
{
#endif 
DWORD MIX_Init( DWORD regKeyPath );
BOOL MIX_Deinit( DWORD dwContext );
void MIX_PowerDown( DWORD devctx );
void MIX_PowerUp( DWORD devctx );
DWORD MIX_Open( DWORD devctx, DWORD access, DWORD share );
BOOL MIX_Close( DWORD openctx );
DWORD MIX_Read( DWORD openctx, void *pBuf, DWORD len );
DWORD MIX_Seek( DWORD openctx, long int pos, DWORD type );
DWORD MIX_Write( DWORD openctx, void *pBuf, DWORD len );
BOOL MIX_IOControl(
	DWORD openctx,
	DWORD dwCode,
	BYTE  *pBufIn,
	DWORD dwLenIn,
	BYTE  *pBufOut,
	DWORD dwLenOut,
	DWORD *pdwActualOut );

typedef struct tagMixer_Context
{
	HANDLE hProcess;
//	PDRIVER_CONTEXT pDriverContext;	// pointer to the unique driver context structure
	PDRVCALLBACK pfnMixerCallback; 	// sent us from the middle layer
	DWORD dwInstance;	// returned to the application calling us
	struct tagMixer_Context*	pNext;
} MIXER_CONTEXT, *PMIXER_CONTEXT;

#ifdef __cplusplus

}
#endif 
#endif // __MIXDRV_H__