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