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#ifndef __ADDRESS_H__
#define __ADDRESS_H__
#pragma pack(1) // avoid problems when Zp!=1
#ifndef MVADDR_DEFINED
#define MVADDR_DEFINED
#ifndef DWORD_NIL
#define DWORD_NIL ((DWORD)0xFFFFFFFF)
#endif
/////// MEDIAVIEW 2.0 ADDRESSES
// some of the following assume that the two addresses are in the same topic.
// but this is a valid assumption. Note that the elements of the addresses, the
// TPID and TPO, are DWORDs, so arithmetic should be performed accordingly.
#define MVAddrFromTopicUID(lp, x) ((lp)->tpid = (x), (lp)->tpo = 0L)
#define MVTopicUIDFromAddr(lp) ((lp)->tpid)
#define MVAddrSame(mva1, mva2) (((mva1).tpo == (mva2).tpo) && ((mva1).tpid == (mva2).tpid))
#define MVAddrCompare(x1, x2) (\
((x1).tpid != (x2).tpid) ? \ (((x1).tpid > (x2).tpid) ? 1 : -1) : \ ( \ ((x1).tpo != (x2).tpo) ? (((x1).tpo > (x2).tpo) ? 1 : -1) : 0 \ ) \ )#define MVAddrAssign(mva1, mva2) ((mva1) = (mva2))
#define MVAddrSetNil(mva) ((mva).tpo = DWORD_NIL, (mva).tpid = DWORD_NIL)
#define MVAddrAddOffset(mva, dw) ((mva).tpo += (dw), (mva))
#define MVAddrSetOffset(mva, dw) ((mva).tpo = (dw), (mva))
#define MVAddrDiff(mva1, mva2) ((LONG)((mva1).tpo - (mva2).tpo))
#define MVAddrSwap(mva) (((mva).tpo) = SWAPLONG((mva).tpo), ((mva).tpid) = SWAPLONG((mva).tpid))
#define MVAddrGetTopicId(lpmva) ((DWORD)(((LPMVADDR)(lpmva))->tpid))
#define MVAddrGetTopicOffset(lpmva) ((DWORD)(((LPMVADDR)(lpmva))->tpo))
#define MVAddrSetTopic(lpmvaTopic, lpmva) (((LPMVADDR)(lpmvaTopic))->tpid = (lpmva)->tpid, (lpmvaTopic)->tpo = 0L)
#define MVAddrIsNil(mva) ((mva).tpo == DWORD_NIL && (mva).tpid == DWORD_NIL)
#define MVAddrMake(lp, dw1, dw2) ((lp)->tpid = ((DWORD)(dw1)), (lp)->tpo = ((DWORD)(dw2)))
typedef DWORD TPID; // topic unique identifier
typedef DWORD TPO; // offset into text of topic
typedef struct tagMVADDR { TPID tpid; TPO tpo;} MVADDR, FAR *LPMVADDR;
#endif // MVADDR_DEFINED
typedef MVADDR VA, FAR *QVA, FAR *LPVA;typedef MVADDR ADDR, FAR *QADDR, FAR *LPADDR;typedef MVADDR PA, FAR *QPA, FAR *LPPA;#define vaNil DWORD_NIL
#define paNil DWORD_NIL
// for conversion purposes, mv1.4 VA becomes the same as mv1.4 ADDR
// and both of these contain a topic offset only
#define OffsetToVA(pva, off) ((pva)->tpo = (off))
#define VAToOffset(pva) ((pva)->tpo) // only valid within topics
typedef DWORD OBJRG;typedef OBJRG FAR *QOBJRG;#define objrgNil (OBJRG) -1
typedef DWORD COBJRG;typedef COBJRG FAR *QCOBJRG;#define cobjrgNil (COBJRG) -1
#pragma pack() // avoid problems when Zp!=1
#endif // !defined(__ADDRESS_H__)
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