160 lines
4.8 KiB
C
160 lines
4.8 KiB
C
//==========================================================================;
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//
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// compmani.h
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//
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// Copyright (c) 1994 - 1995 Microsoft Corporation. All Rights Reserved.
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//
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// Description:
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// Internal COMPMAN header file. Defines some internal
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// data structures and things not needed outside of COMPMAN itself.
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//
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// History:
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// 07/07/94 frankye
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//
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//==========================================================================;
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#if !defined NUMELMS
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#define NUMELMS(aa) (sizeof(aa)/sizeof((aa)[0]))
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#define FIELDOFF(type,field) (&(((type)0)->field))
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#define FIELDSIZ(type,field) (sizeof(((type)0)->field))
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#endif
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//--------------------------------------------------------------------------;
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//
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// ICMGARB structure
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//
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//
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// This structure contains information (ICM Garbage) that is global but
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// on a per-process basis. Currently this is required only for 16-bit
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// builds and the structues are maintained in a linked list whose head
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// is pointed to by the gplig global variable.
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//
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//--------------------------------------------------------------------------;
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typedef struct tICMGARB
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{
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struct tICMGARB*pigNext; // next garb structure
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DWORD pid; // process id associated with this garb
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UINT cUsage; // usage count for this process
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//
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// 16-to-32 thunk related data
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//
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BOOL fThunksInitialized;
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BOOL fThunkError;
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DWORD dwMsvfw32Handle;
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LPVOID lpvThunkEntry;
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} ICMGARB, *PICMGARB, FAR *LPICMGARB;
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extern PICMGARB gplig;
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//--------------------------------------------------------------------------;
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//
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// misc data structures
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//
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//--------------------------------------------------------------------------;
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//
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//
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//
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typedef struct {
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DWORD dwSmag; // 'Smag'
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HTASK hTask; // owner task.
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DWORD fccType; // converter type ie 'vidc'
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DWORD fccHandler; // converter id ie 'rle '
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HDRVR hDriver; // handle of driver
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LPARAM dwDriver; // driver id for functions
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DRIVERPROC DriverProc; // function to call
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DWORD dnDevNode; // devnode id iff pnp driver
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#ifdef NT_THUNK16
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//
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// h32 : 32-bit driver handle
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// lpstd : 16:16 ptr to current status thunk descriptor
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//
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DWORD h32;
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struct tICSTATUSTHUNKDESC FAR* lpstd;
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#endif
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} IC, *PIC;
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//
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// This structure is similar in use to the ICINFO structure except
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// that it is only used internally and not passed to apps.
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//
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// !!! If you add anything to this structure that requires thunking,
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// then you're going to need to thunk it in thunk.c
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//
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typedef struct {
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DWORD dnDevNode; // devnode id iff pnp driver
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} ICINFOI, NEAR *NPICINFOI, *PICINFOI, FAR *LPICINFOI ;
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//--------------------------------------------------------------------------;
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//
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// GetCurrentProcessId prototype
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//
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//--------------------------------------------------------------------------;
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//--------------------------------------------------------------------------;
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//
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// DWORD GetCurrentProcessId
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//
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// Description:
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// This function returns the current process id
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//
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// Arguments:
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//
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// Return (DWORD):
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// Id of current process
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//
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// History:
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// 04/25/94 frankye
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//
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// Notes:
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//
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// WIN32:
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// This function exists in the 32-bit kernels on both Chicago and
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// Daytona and we provide no prototype for WIN32 compiles.
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//
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// 16-bit Chicago:
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// It is exported as in internal API by the 16-bit Chicago kernel.
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// We provide the prototype here and import it in the def file.
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//
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// 16-bit Daytona:
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// Has no such 16-bit function and really doesn't need one since all
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// 16-bit tasks are part of the same process under Daytona. Therefore
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// we just #define this to return (1) for 16-bit non-Chicago builds.
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//
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//--------------------------------------------------------------------------;
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#ifndef _WIN32
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#ifdef CHICAGO
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DWORD WINAPI GetCurrentProcessId(void);
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#else
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#define GetCurrentProcessId() (1)
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#endif
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#endif
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//--------------------------------------------------------------------------;
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//
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// Thunk initialization and termination function protos
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//
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//--------------------------------------------------------------------------;
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PICMGARB WINAPI thunkInitialize(VOID);
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VOID WINAPI thunkTerminate(PICMGARB pid);
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//--------------------------------------------------------------------------;
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//
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// pig function protos
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//
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//--------------------------------------------------------------------------;
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PICMGARB FAR PASCAL pigNew(void);
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PICMGARB FAR PASCAL pigFind(void);
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void FAR PASCAL pigDelete(PICMGARB pig);
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//--------------------------------------------------------------------------;
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//
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// misc function protos
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//
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//--------------------------------------------------------------------------;
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BOOL VFWAPI ICInfoInternal(DWORD fccType, DWORD fccHandler, ICINFO FAR * lpicinfo, ICINFOI FAR * lpicinfoi);
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