os.h

这是一个SIGMA方案的PMP播放器的UCLINUX程序,可播放DVD,VCD,CD MP3...有很好的参考价值.

/*****************************************************************************
*  OS.h : Functions implemented by the OS
*  REALmagic Quasar Hardware Library
*  Created by Michael Ignaszewski
*  Copyright Sigma Designs Inc
*  Sigma Designs Proprietary and confidential
*  Created on 8/23/98
*  Description:
*****************************************************************************/

#ifdef __cplusplus
extern "C"{
#endif

// Some of the prototypes can be implemented in osinc.h like macros,
// otherwise implement them in os.c

// memory access functions
#ifndef OSGetDword
	DWORD OSGetDword(void* pTarget);
#endif
#ifndef OSGetWord
	WORD OSGetWord(void *pTarget);
#endif
#ifndef OSPutDword
	void OSPutDword(DWORD data, void *pTarget);
#endif
#ifndef OSCacheFlush
	void OSCacheFlush(void *pData, size_t size);
#endif

// PCI access functions
#ifndef OSReadPciDword
	DWORD OSReadPciDword(void *pTarget);
#endif
#ifndef OSWritePciDword
	void OSWritePciDword(void *pTarget, DWORD data);
#endif
#ifndef OSWritePCIReg
	void OSWritePCIReg(DWORD DevNode, DWORD AddrData);
#endif

// memory functions
#ifndef OSmalloc
	void* OSmalloc (unsigned long dwBytes);
#endif
#ifndef OSfree
	void OSfree  (void* pBlock);
#endif
#ifndef OSmemcpy
	void OSmemcpy(void* dest, const void* src, size_t count);
#endif
#ifndef OSmemcmp
	int OSmemcmp(void* dest, const void* src, size_t count);
#endif
#ifndef OSmemset
	void OSmemset (void *dest, BYTE c, size_t count);
#endif
#ifndef OSMapLinearToPhysical
	void OSMapLinearToPhysical(DWORD dwLinearAddr, DWORD* pdwPhysicalAddr);
#endif

// time functions
#ifndef OSTimeInit
	void OSTimeInit (void);
#endif
#ifndef OSTimeDelay
	void OSTimeDelay (unsigned long dwusTime); // unit is microseconds.
#endif
#ifndef OSTimeGetTime
	DWORD OSTimeGetTime(void); // unit is milliseconds.
#endif

// string functions
#ifndef OSstrncpy
	void OSstrncpy(TCHAR *Dest,TCHAR *Src,unsigned long CopySize);
#endif
#ifndef OSstrcpy
	void OSstrcpy( TCHAR* strDestination, const TCHAR* strSource );
#endif
#ifndef OSstrcat
	void OSstrcat(TCHAR *Dest,TCHAR *Src);
#endif
#ifndef OSstrcmpi
	int OSstrcmpi( const CHAR *string1, const CHAR *string2 );
#endif
#ifndef OSstrlen
	DWORD OSstrlen(TCHAR *s);
#endif
#ifndef OSsprintf
	void OSsprintf(TCHAR *Dest,const TCHAR *pFormat,...);
#endif

// debug functions
#ifndef OSDbgLogInfo
	void OSDbgLogInfo(DWORD Type, const TCHAR *pFileName, INT iLine, DWORD Level, const TCHAR *pFormat,...);
#endif

// event related functions
#ifndef OSCompleteIo
	void OSCompleteIo(LONG Status, void* pEventToComplete);
#endif
#ifndef OSFreePacketListEntry
	void OSFreePacketListEntry(void* pPackList, DWORD uiPacketIndex, DWORD uiPacketCount);
#endif

#ifndef OSCompleteIoStatusSuccess
	#define OSCompleteIoStatusSuccess	0x01060000 //==old MpegStatusSuccess
#endif

// calcul functions used in HwLib
// For efficiency they are implemented in assembly code for Windows9x
DWORD OSDDiv (DWORD a, DWORD b, DWORD dv);
void ChromaCalc(SHORT Cr, SHORT Cb, WORD* pRout, WORD* pGout, WORD* pBout);
BYTE RGBCalc(SHORT Y, SHORT R_G_B);
void unpack(DWORD ThreeBytes, BYTE* Y);

// pseudo-random numbers generation for test Dram 
#ifndef OSrand
	int OSrand(void);
#endif

#ifdef __cplusplus
}
#endif