drmbytemanip.h

本程序为ST公司开发的源代码

/**@@@+++@@@@******************************************************************
**
** Microsoft Windows Media
** Copyright (C) Microsoft Corporation. All rights reserved.
**
***@@@---@@@@******************************************************************
*/

#ifndef __DRM_BYTEMANIP_H__ 
#define __DRM_BYTEMANIP_H__ 

#ifdef __cplusplus
extern "C" {
#endif

#define DRM_BYT_CopyBytes(to,tooffset,from,fromoffset,count) memcpy(&((to)[(tooffset)]),&((from)[(fromoffset)]),(count))
#define DRM_BYT_MoveBytes(to,tooffset,from,fromoffset,count) memmove(&((to)[(tooffset)]),&((from)[(fromoffset)]),(count))
#define DRM_BYT_SetBytes(pb,ib,cb,b) memset(&((pb)[(ib)]),b,cb)
#define DRM_BYT_CompareBytes(pbA,ibA,pbB,ibB,cb) memcmp(&((pbA)[(ibA)]),&((pbB)[(ibB)]),(cb))

#define GET_BYTE(pb,ib)      (pb)[(ib)]
#define PUT_BYTE(pb,ib,b)    (pb)[(ib)]=(b)
#define GET_CHAR(pch,ich)           (pch)[(ich)]
#define PUT_CHAR(pch,ich,ch)        (pch)[(ich)]=(ch)

#if TARGET_LITTLE_ENDIAN
#define MAKE_MACHINE_WCHAR(ch0,ch1)  ( ((ch1)<<8) | ((ch0) & 0x00FF) )
#else
#define MAKE_MACHINE_WCHAR(ch0,ch1)  ( ((ch0)<<8) | ((ch1) & 0x00FF) )
#endif

#define TWO_BYTES(b0,b1)             b0,b1
#define ONE_WCHAR(ch0,ch1)           MAKE_MACHINE_WCHAR(ch0,ch1)

#define ZEROMEM(pb,cb)			DRM_BYT_SetBytes((pb),0,(cb),0)
#define MEMCPY(pbTo,pbFrom,cb)  DRM_BYT_CopyBytes(   (pbTo),0,(pbFrom),0,(cb))
#define MEMSET(pb,cb,val)		DRM_BYT_SetBytes((pb),0,(cb),(val))
#define MEMCMP(pbA,pbB,cb)      DRM_BYT_CompareBytes((pbA) ,0,(pbB),   0,(cb))


#ifdef __cplusplus
}
#endif

#endif /* __DRM_BYTEMANIP_H__ */