audiopio.h

CIRRUS 公司EP93XX系列CPU的WINCE下的BSP

//**********************************************************************
//                                                                      
// Filename: audiopio.h
//                                                                      
// Description: Contains structures for the Audio PIO Buffer. 
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//
// Use of this source code is subject to the terms of the Cirrus end-user
// license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
// If you did not accept the terms of the EULA, you are not authorized to 
// use this source code. For a copy of the EULA, please see the 
// LICENSE.RTF on your install media.
//
// Copyright(c) Cirrus Logic Corporation 2002, All Rights Reserved                       
//                                                                      
//**********************************************************************

#ifndef _H_KERNEL_COMMON
#define _H_KERNEL_COMMON

typedef struct
{   
    BOOL    bAC97;
    ULONG   *pulBuffer;
    ULONG   ulBufferSize;
    
} PIOBufferParameters;

struct AudioPIO
{
    ULONG   *pulBuffer;
    ULONG   ulBufferSize;
    ULONG   *pulBufferEnd;
    ULONG   *pulBufferHalf;
    ULONG   *pulPosition;
    BOOL    bEnabled;
    BOOL    bIntEnabled;
};

extern struct AudioPIO sPlayBack;
extern struct AudioPIO sRecord;

#define MAX_TRANSMIT_BUFFER_SIZE        0x4000
    

#endif // 0