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windows-nt/Source/XPSP1/NT/multimedia/media/avi/compman/thunk.c

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2020-09-26 03:20:57 -05:00
//==========================================================================;
// COMMENTS DO NOT YET APPLY TO MSVIDEO.DLL/MSVFW32.DLL
// thunk.c
//
// Copyright (c) 1991-1994 Microsoft Corporation. All Rights Reserved.
//
// Description:
// This module contains routines for thunking the
// ICM APIs (messages) from 16-bit Windows to 32-bit WOW.
//
// History:
//
//==========================================================================;
// This stuff is not going to work 64-bit
#pragma warning(disable:4312)
/*
WOW Thunking design:
Thunks are generated as follows :
16-bit :
acmBootDrivers->acmInitThunks :
Generate calls to 32-bit drivers if we're in WOW call across
to KERNEL to find thunking entry points.
If we're thunking 'load' all the 32-bit ACM drivers as well as
the 16-bit ones.
Priority is always to find a 32-bit driver first but this is
done via searching for one on open.
The internal flag ACM_DRIVERADDF_32BIT is specified when
calling IDriverAdd and this flag is stored in the ACMDRIVERID
structure.
IDriverAdd->IDriverLoad->IDriverLoad32
The 16-bit side calls the 32-bit side passing in the driver
alias which is used to compare against the aliases on the 32
bit side and the 32-bit HACMDRIVERID is passed back for the
relevant driver and stored in the hdrvr field of the
ACMDRIVERID structure.
IDriverOpen->IDriverOpen32
The parameters are passed to the 32-bit side using the hdrvr
field deduced from the HACMDRIVERID as the 32-bit HACMDRIVERID.
IDriverMessageId->IDriverMessageId32 :
If the driver is 32-bit (as identified in the ACMDRIVERID
structure) then call IDriverMessageId32. The hadid for
the 32-bit driver is stored in the hdrvr field of ACMDRIVERID
on the 16-bit side.
IDriverMessage->IDriverMessage32
If the driver is 32-bit (as identified in the ACMDRIVERID
structure pointed to by the ACMDRIVER structure) then call
IDriverMessage32. The had for the 32-bit driver is stored
in the hdrvr field of ACMDRIVER on the 16-bit side.
Stream headers
These must be persistent on the 32-bit side too and kept
in synch.
They are allocated on the 32-bit side for ACMDM_STREAM_PREPARE
and freed on ACMDM_STREAM_UNPREPARE. While in existence
the 32-bit stream header is stored in the dwDriver field in
*/
//==========================================================================;
#define _INC_COMPMAN
#include <windows.h>
#include <windowsx.h>
#include <mmsystem.h>
#include <mmddk.h>
#include <mmreg.h>
#include <memory.h>
#include <win32.h>
#include <vfw.h>
#include <msviddrv.h>
#ifdef _WIN32
#ifdef DAYTONA
#include <wownt32.h>
#endif
#include <stdlib.h> // for mbstowcs and wcstombs
#endif // _WIN32
#ifdef _WIN32
#include "compmn16.h"
#endif
#include "compmani.h"
#include "thunk.h"
#include "debug.h"
#ifdef NT_THUNK32
//==========================================================================;
//
//
// --- === 32 BIT SIDE === ---
//
//
//==========================================================================;
/* -------------------------------------------------------------------------
** Handle and memory mapping functions.
** -------------------------------------------------------------------------
*/
LPWOWHANDLE32 lpWOWHandle32;
LPWOWHANDLE16 lpWOWHandle16;
LPGETVDMPOINTER GetVDMPointer;
LPWOWCALLBACK16 lpWOWCallback16;
int ThunksInitialized;
//
// These wrap around whatever mapping mechanism is used on the platform
// we are compiling for.
//
INLINE PVOID ptrFixMap16To32(const VOID * pv, DWORD cb);
INLINE VOID ptrUnFix16(const VOID * pv);
#ifdef CHICAGO
//
// -= Chicago implementation of memory mapping functions =-
//
//
// Thunk helper routines in Chicago kernel
//
extern PVOID WINAPI MapSL(const VOID * pv);
extern PVOID WINAPI MapSLFix(const VOID * pv);
extern VOID WINAPI UnMapSLFixArray(DWORD dwCnt, const VOID * lpSels[]);
PVOID INLINE ptrFixMap16To32(const VOID * pv, DWORD cb)
{
return MapSLFix(pv);
}
VOID INLINE ptrUnFix16(const VOID * pv)
{
UnMapSLFixArray(1, &pv);
}
#else // CHICAGO ELSE
//
// -= Daytona implementation of memory mapping functions =-
//
// Use #define to avoid having a function call
#define ptrFixMap16To32(spv, cb) \
GetVDMPointer( (DWORD) (DWORD_PTR) (spv), (cb), TRUE )
//PVOID ptrFixMap16To32(const VOID * pv, DWORD cb)
//{
// return GetVDMPointer( (DWORD)pv, cb, TRUE );
//}
//
// The unfix routine is a total noop.
// We should really call WOWGetVDMPointerUnfix...
//
#define ptrUnFix16(spv)
//VOID ptrUnFix16(const VOID * pv)
//{
// return;
//}
#endif // !CHICAGO
//--------------------------------------------------------------------------;
//
//
//
//--------------------------------------------------------------------------;
//
// 16-bit structures
//
typedef struct {
DWORD dwDCISize;
LPCSTR lpszDCISectionName;
LPCSTR lpszDCIAliasName;
} DRVCONFIGINFO16;
//
// Useful functions
//
//
// CopyAlloc - allocate a new piece of memory, and copy the data in
// Must use LocalFree to release the memory later
//
PVOID CopyAlloc(PVOID pvSrc, UINT uSize)
{
PVOID pvDest;
pvDest = (PVOID)LocalAlloc(LMEM_FIXED, uSize);
if (pvDest != NULL) {
CopyMemory(pvDest, pvSrc, uSize);
}
return pvDest;
}
/*
* Copy data from source to dest where source is a 32bit pointer
* and dest is a 16bit pointer
*/
void CopyTo16Bit(LPVOID Dest16, LPVOID Src32, DWORD Length)
{
PVOID Dest32;
if (Src32 == NULL) {
return;
}
Dest32 = ptrFixMap16To32(Dest16, Length);
CopyMemory(Dest32, Src32, Length);
ptrUnFix16(Dest16);
}
/*
* Copy data from source to dest where source is a 16bit pointer
* and dest is a 32bit pointer
*/
void CopyTo32Bit(LPVOID Dest32, LPVOID Src16, DWORD Length)
{
PVOID Src32;
if (Src16 == NULL) {
return;
}
Src32 = ptrFixMap16To32(Src16, Length);
CopyMemory(Dest32, Src32, Length);
ptrUnFix16(Src16);
}
#ifdef _INC_COMPMAN
/*--------------------------------------------------------------------------*\
| |
| Now thunk the compman functions |
| |
| |
| |
| |
\*--------------------------------------------------------------------------*/
/*
* Convert ICDRAWBEGIN structures
*/
INLINE STATICFN void ConvertICDRAWBEGIN(ICDRAWBEGIN *DrawBegin32,
LPBITMAPINFOHEADER lpBmi,
DWORD dw)
{
ICDRAWBEGIN16 DrawBegin16;
CopyTo32Bit(&DrawBegin16, (LPVOID)dw, sizeof(ICDRAWBEGIN16));
DrawBegin32->dwFlags = DrawBegin16.dwFlags;
DrawBegin32->hpal = ThunkHPAL(DrawBegin16.hpal);
if (DrawBegin16.dwFlags & ICDRAW_HDC) {
DrawBegin32->hwnd = ThunkHWND(DrawBegin16.hwnd);
DrawBegin32->hdc = ThunkHDC(DrawBegin16.hdc);
}
DrawBegin32->xDst = (int)DrawBegin16.xDst;
DrawBegin32->yDst = (int)DrawBegin16.yDst;
DrawBegin32->dxDst = (int)DrawBegin16.dxDst;
DrawBegin32->dyDst = (int)DrawBegin16.dyDst;
CopyTo32Bit(lpBmi, DrawBegin16.lpbi, sizeof(BITMAPINFOHEADER));
DrawBegin32->lpbi = lpBmi;
DrawBegin32->xSrc = (int)DrawBegin16.xSrc;
DrawBegin32->ySrc = (int)DrawBegin16.ySrc;
DrawBegin32->dxSrc = (int)DrawBegin16.dxSrc;
DrawBegin32->dySrc = (int)DrawBegin16.dySrc;
DrawBegin32->dwRate = DrawBegin16.dwRate;
DrawBegin32->dwScale = DrawBegin16.dwScale;
}
/*
* Following logic copied from mvdm\wow32\wstruc.c - however since we
* don't have the usage parameter we're a bit stuck on the size of the
* entries.
*
* See also the video for windows documentation - only a limited range of
* bitmap types are discussed.
*/
INT GetBMI16Size(UNALIGNED BITMAPINFOHEADER *pbmi16)
{
int nHdrSize;
int nEntSize;
int nEntries;
int nBitCount;
DWORD dwClrUsed;
nHdrSize = (int)pbmi16->biSize;
/*
* We don't have some of the info we need so assume RGBQUAD
*/
nEntSize = sizeof(RGBQUAD);
nBitCount = pbmi16->biBitCount;
dwClrUsed = pbmi16->biClrUsed;
/* the following block of code should be this:
*
* if ( nBitCount > 8 ) { // true colour
* nEntries = 0; (ordinary case)
* nEntries = 3; (BI_BITFIELDS case)
* }
* else if ( dwClrUsed ) {
* nEntries = dwClrUsed;
* }
* else {
* nEntries = 1 << nBitCount;
* }
*
* but due to the fact that many apps don't initialize the biBitCount &
* biClrUsed fields (especially biClrUsed) we have to do the following
* sanity checking instead. v-cjones
*/
if ( nBitCount <= 8 ) {
nEntries = 1 << nBitCount;
// sanity check for apps (lots) that don't init the dwClrUsed field
if(dwClrUsed) {
nEntries = (int)min((DWORD)nEntries, dwClrUsed);
}
} else {
if (pbmi16->biCompression == BI_BITFIELDS)
nEntries = 3;
else
nEntries = 0;
}
return ( nHdrSize + (nEntries * nEntSize) );
}
INLINE LPBITMAPINFO CopyBitmapInfo(DWORD Bi16)
{
UNALIGNED BITMAPINFOHEADER *pbmi16;
LPBITMAPINFO lpbmi;
pbmi16 = ptrFixMap16To32((PVOID)Bi16, 0);
if ((int)pbmi16->biSize == 0) {
pbmi16->biSize = sizeof(BITMAPINFOHEADER);
DPF(0, "WARNING: null bitmap info size, setting it correctly");
}
lpbmi = (LPBITMAPINFO)CopyAlloc((LPVOID)pbmi16, GetBMI16Size(pbmi16));
ptrUnFix16((PVOID)Bi16);
return (lpbmi);
}
/*
* Allocate a BITMAPINFO structure to contain 256 colours
*/
INLINE LPBITMAPINFO AllocBitmapInfo()
{
return (PVOID)LocalAlloc(LMEM_FIXED, sizeof(BITMAPINFOHEADER)+
(sizeof(RGBQUAD)*256));
}
INLINE LPBITMAPINFOHEADER CopyBitmapInfoHeader(DWORD Bi16)
{
UNALIGNED BITMAPINFOHEADER *pbmi16;
LPBITMAPINFOHEADER lpbmi;
pbmi16 = ptrFixMap16To32((PVOID)Bi16, 0);
lpbmi = (LPBITMAPINFOHEADER)CopyAlloc((LPVOID)pbmi16, pbmi16->biSize);
ptrUnFix16((PVOID)Bi16);
return (lpbmi);
}
DWORD CopyICINFOTo16bit(DWORD dw, ICINFO *IcInfoCopy, DWORD Length)
{
ICINFO16 IcInfo;
LONG ReturnCode;
/*
* Make a copy since the behaviour of wcstombs is undefined
* for overlapping input and output
*/
memcpy(&IcInfo, IcInfoCopy, FIELD_OFFSET(ICINFO, szName[0]));
/*
* Massage the strings
*/
wcstombs(IcInfo.szName,
IcInfoCopy->szName,
sizeof(IcInfo.szName));
// HACK : overwrite the last five characters with "[32]\0"
if ((IcInfo.szName[0]))
{
UINT n = min(sizeof(IcInfo.szName)-5, lstrlenA(IcInfo.szName));
IcInfo.szName[n++] = '[';
IcInfo.szName[n++] = '3';
IcInfo.szName[n++] = '2';
IcInfo.szName[n++] = ']';
IcInfo.szName[n] = '\0';
}
wcstombs(IcInfo.szDescription,
IcInfoCopy->szDescription,
sizeof(IcInfo.szDescription));
// HACK : overwrite the last five characters with "[32]\0"
if ((IcInfo.szDescription[0]))
{
UINT n = min(sizeof(IcInfo.szDescription)-5, lstrlenA(IcInfo.szDescription));
IcInfo.szDescription[n++] = '[';
IcInfo.szDescription[n++] = '3';
IcInfo.szDescription[n++] = '2';
IcInfo.szDescription[n++] = ']';
IcInfo.szDescription[n] = '\0';
}
wcstombs(IcInfo.szDriver,
IcInfoCopy->szDriver,
sizeof(IcInfo.szDriver));
IcInfo.dwSize = sizeof(IcInfo);
ReturnCode = min(Length, IcInfo.dwSize);
CopyTo16Bit((LPVOID)dw, &IcInfo, ReturnCode);
return ReturnCode;
}
/*
* We need to convert the various fields in the ICDECOMPRESS/EX
* structure(s). Fortunately(?) the EX structure is a simple
* extension.
*/
typedef struct {
//
// same as ICM_DECOMPRESS
//
DWORD dwFlags;
LPBITMAPINFOHEADER lpbiSrc; // BITMAPINFO of compressed data
LPVOID lpSrc; // compressed data
LPBITMAPINFOHEADER lpbiDst; // DIB to decompress to
LPVOID lpDst; // output data
//
// new for ICM_DECOMPRESSEX
//
short xDst; // destination rectangle
short yDst;
short dxDst;
short dyDst;
short xSrc; // source rectangle
short ySrc;
short dxSrc;
short dySrc;
} ICDECOMPRESSEX16;
STATICFN DWORD DoICM_DecompressX(DWORD hic, UINT msg, DWORD_PTR dwP1, DWORD_PTR dwP2)
{
ICDECOMPRESSEX16 UNALIGNED *lpicdmpr16;
ICDECOMPRESSEX ICDecompressEx;
LRESULT l;
BOOL fQuery = TRUE;
/* Copy the standard or extended structure */
lpicdmpr16 = ptrFixMap16To32( (PVOID)dwP1, (DWORD) dwP2 );
ICDecompressEx.dwFlags = lpicdmpr16->dwFlags;
ICDecompressEx.lpbiSrc = (LPBITMAPINFOHEADER)CopyBitmapInfo((DWORD)(DWORD_PTR)lpicdmpr16->lpbiSrc);
if (NULL == ICDecompressEx.lpbiSrc) {
ptrUnFix16( (PVOID)dwP1 );
return (DWORD)ICERR_MEMORY;
}
ICDecompressEx.lpbiDst = (LPBITMAPINFOHEADER)CopyBitmapInfo((DWORD)(DWORD_PTR)lpicdmpr16->lpbiDst);
if ((NULL == ICDecompressEx.lpbiDst) && (msg != ICM_DECOMPRESSEX_QUERY)) {
LocalFree( (HLOCAL)ICDecompressEx.lpbiSrc );
ptrUnFix16( (PVOID)dwP1 );
return (DWORD)ICERR_MEMORY;
}
if (msg == ICM_DECOMPRESSEX || msg == ICM_DECOMPRESS) {
// map the source and destination pointers
ICDecompressEx.lpSrc = ptrFixMap16To32(lpicdmpr16->lpSrc,
ICDecompressEx.lpbiSrc->biSizeImage);
ICDecompressEx.lpDst = ptrFixMap16To32(lpicdmpr16->lpDst,
ICDecompressEx.lpbiDst->biSizeImage);
fQuery = FALSE; // remember
} else { // it is a query and we do not map the pointers
ICDecompressEx.lpSrc = NULL;
ICDecompressEx.lpDst = NULL;
}
if (dwP2 == sizeof(ICDECOMPRESSEX16) ) {
ICDecompressEx.xDst = (int)lpicdmpr16->xDst;
ICDecompressEx.yDst = (int)lpicdmpr16->yDst;
ICDecompressEx.dxDst = (int)lpicdmpr16->dxDst;
ICDecompressEx.dyDst = (int)lpicdmpr16->dyDst;
ICDecompressEx.xSrc = (int)lpicdmpr16->xSrc;
ICDecompressEx.ySrc = (int)lpicdmpr16->ySrc;
ICDecompressEx.dxSrc = (int)lpicdmpr16->dxSrc;
ICDecompressEx.dySrc = (int)lpicdmpr16->dySrc;
dwP2 = sizeof(ICDecompressEx); // Make the size relate to 32 bit
}
l = ICSendMessage( (HIC)hic, (UINT)msg, (LPARAM)&ICDecompressEx, dwP2 );
/* I don't think the following is needed // FrankYe 11/18/94
// If we do, don't just uncomment this. You gotta use biUnMapSL
if ( l == ICERR_OK) {
CopyTo16Bit( lpicdmpr16->lpbiDst, ICDecompressEx.lpbiDst,
sizeof(BITMAPINFOHEADER) );
}
*/
LocalFree( (HLOCAL)ICDecompressEx.lpbiSrc );
if (ICDecompressEx.lpbiDst) {
LocalFree( (HLOCAL)ICDecompressEx.lpbiDst );
}
if (!fQuery) {
ptrUnFix16( lpicdmpr16->lpSrc );
ptrUnFix16( lpicdmpr16->lpDst );
}
ptrUnFix16( (PVOID)dwP1 );
return (DWORD) l;
}
/*
* Generate our thunks - refer to msvideo!compman.c for definitions of
* functions.
*
* NOTE - we often rely here on the fact that most of the message
* parameter structures are identical for 16 and 32-bit - ie they
* contain DWORDs and 32-bit pointers.
*/
//--------------------------------------------------------------------------;
//
// LONG thkStatusProc32
//
// When a client calls the 16-bit ICSetStatusProc while using a
// 32-bit codec, this function is set as the StatusProc in 32-bit codec.
// This function will then thunk down to 16-bits and call the
// client's StatusProc.
//
// Arguments:
// LPARAM lParam : contains linear ptr to an ICSTATUSTHUNKDESC. The
// ICSTATUSTHUNKDESC is created during the call to ICSetStatusProc.
//
// UINT uMsg :
//
// LONG l :
//
// Return value:
// LONG :
//
//--------------------------------------------------------------------------;
LONG CALLBACK thkStatusProc32(LPARAM lParam, UINT uMsg, LONG l)
{
LPICSTATUSTHUNKDESC lpstd;
LONG lr;
DPFS(dbgThunks, 4, "thkStatusProc32()");
lpstd = (LPICSTATUSTHUNKDESC)lParam;
ASSERT( lpstd->fnStatusProcS );
ASSERT( lpstd->pfnthkStatusProc16S );
lr = 0;
//
// TODO: Thunk error string for ICSTATUS_ERROR. Currently I'm not
// sure if ICSTATUS_ERROR is documented.
//
//#pragma message(REMIND("thkStatusProc32: thunk ICSTATUS_ERROR"))
if (ICSTATUS_ERROR == uMsg) {
//
// Is l supposed to be an LPSTR to an error string???
//
l = (LONG)0;
}
//
//
//
lpstd->uMsg = uMsg;
lpstd->l = l;
lr = lpWOWCallback16(lpstd->pfnthkStatusProc16S, (DWORD)lpstd->lpstdS);
return (lr);
}
//--------------------------------------------------------------------------;
//
// LRESULT thkSetStatusProc
//
// This function is called as a result of thunking up from a call to
// the 16-bit ICSetStatusProc. It will call the 32-bit ICSetStatusProc
// to install thkStatusProc32.
//
// Arguments:
// HIC hic : handle to 32-bit codec
//
// LPARAM lParam : contains linear ptr to an ICSTATUSTHUNKDESC. The
// ICSTATUSTHUNKDESC is created in the call to the 16-bit
// ICSetStatusProc. This will be set as the lParam to be passed
// to our thkStatusProc32.
//
// Return value:
// LRESULT :
//
//--------------------------------------------------------------------------;
LRESULT WINAPI thkSetStatusProc(HIC hic, LPICSTATUSTHUNKDESC lpstd)
{
DPFS(dbgThunks, 3, "thkSetStatusProc()");
return ICSetStatusProc(hic, 0L, (LPARAM)lpstd, thkStatusProc32);
}
//--------------------------------------------------------------------------;
//
//
//
//--------------------------------------------------------------------------;
LRESULT FAR PASCAL ICInfo32(DWORD fccType, DWORD fccHandler, ICINFO16 FAR * lpicInfo)
{
ICINFO ReturnedICInfo;
StartThunk(ICInfo);
//DPF2(("Calling ICInfo %4.4hs %4.4hs %8X", &fccType, &fccHandler, lpicInfo));
ReturnedICInfo.fccHandler = 0; // Initialise...
ReturnCode = ICInfo(fccType, fccHandler, &ReturnedICInfo);
CopyICINFOTo16bit((DWORD)(DWORD_PTR)lpicInfo, &ReturnedICInfo, sizeof(ReturnedICInfo));
EndThunk()
}
LRESULT FAR PASCAL ICInfoInternal32(DWORD fccType, DWORD fccHandler, ICINFO16 FAR * lpicInfo, ICINFOI FAR * lpicInfoI)
{
return ICInfo32(fccType, fccHandler, lpicInfo);
#if 0
ICINFO ReturnedICInfo;
ICINFOI ReturnedICInfoI;
StartThunk(ICInfo);
// DPF(1, "Calling ICInfo %4.4hs %4.4hs %8X", &fccType, &fccHandler, lpicInfo);
ReturnedICInfo.fccHandler = 0; // Initialise...
ReturnCode = ICInfoInternal(fccType, fccHandler, &ReturnedICInfo, &ReturnedICInfoI);
if (NULL != lpicInfoI) {
//
// Assuming no members of ICINFOI need special thunking
//
CopyTo16Bit(lpicInfoI, &ReturnedICInfoI, sizeof(*lpicInfoI));
}
CopyICINFOTo16bit((DWORD)(DWORD_PTR)lpicInfo, &ReturnedICInfo, sizeof(ReturnedICInfo));
EndThunk()
#endif
}
LRESULT FAR PASCAL ICSendMessage32(DWORD hic, UINT msg, DWORD_PTR dwP1, DWORD_PTR dwP2)
{
StartThunk(ICSendMessage);
DPF(2,"Calling ICSendMessage %4X %4X %8X %8X",
hic, msg, dwP1, dwP2);
switch (msg) {
case ICM_GETSTATE:
case ICM_SETSTATE:
if (dwP1 == 0) {
ReturnCode = ICSendMessage((HIC)(DWORD)hic,
(UINT)msg,
dwP1,
dwP2);
} else {
PVOID pState;
/*
* Create some aligned memory to return or pass on the data
*/
pState = (PVOID)LocalAlloc(LPTR, dwP2);
if (pState == NULL) {
ReturnCode = 0;
} else {
if ((UINT)msg == ICM_SETSTATE) {
// Copy the data from 16 bit land
CopyTo32Bit(pState, (LPVOID)dwP1, (DWORD) dwP2);
}
ReturnCode = ICSendMessage((HIC)(DWORD)hic, (UINT)msg,
(DWORD_PTR)pState, dwP2);
/*
* Copy back the state, if the driver returned any data
*/
if (ReturnCode > 0 && (UINT)msg == ICM_GETSTATE) {
CopyTo16Bit((LPVOID)dwP1, pState,
min((DWORD)ReturnCode, (DWORD) dwP2));
}
LocalFree((HLOCAL)pState);
}
}
break;
case ICM_GETINFO:
{
ICINFO IcInfo;
ReturnCode = ICGetInfo((HIC)(DWORD)hic, &IcInfo, sizeof(IcInfo));
if (ReturnCode != 0) {
ReturnCode = CopyICINFOTo16bit((DWORD) (DWORD_PTR) dwP1, &IcInfo, (DWORD) ReturnCode);
}
}
break;
case ICM_CONFIGURE:
case ICM_ABOUT:
/*
* dwP1 = -1 is a special value asking if config is supported,
* otherwise it's a window handle
*/
ReturnCode = ICSendMessage((HIC)(DWORD)hic,
(UINT)msg,
dwP1 == (DWORD_PTR)-1 ?
(DWORD_PTR)-1 :
(DWORD_PTR)ThunkHWND(LOWORD(dwP1)),
dwP2);
break;
case ICM_COMPRESS:
{
if (dwP2 != sizeof(ICCOMPRESS)) { // validation code
ReturnCode = ICERR_BADSIZE;
} else {
DWORD dwFlags;
LPDWORD lpdwFlags16, lpckid16;
LPBITMAPINFOHEADER lpbih16;
LPVOID lpInput, lpOutput, lpPrev;
DWORD ckid;
ICCOMPRESS IcCompress;
ReturnCode = ICERR_OK;
/*
* We need to convert the various fields in the ICCOMPRESS
* structure
*/
CopyTo32Bit( &IcCompress, (LPVOID)dwP1, (DWORD) dwP2 );
IcCompress.lpbiInput = (LPBITMAPINFOHEADER)CopyBitmapInfo((DWORD)(DWORD_PTR)IcCompress.lpbiInput);
if (NULL == IcCompress.lpbiInput) {
ReturnCode = ICERR_MEMORY;
break;
}
lpbih16 = IcCompress.lpbiOutput;
IcCompress.lpbiOutput = (LPBITMAPINFOHEADER)CopyBitmapInfo((DWORD)(DWORD_PTR)IcCompress.lpbiOutput);
if (NULL == IcCompress.lpbiOutput) {
LocalFree((HLOCAL)IcCompress.lpbiInput);
ReturnCode = ICERR_MEMORY;
break;
}
lpInput = IcCompress.lpInput;
IcCompress.lpInput = ptrFixMap16To32(IcCompress.lpInput, IcCompress.lpbiInput->biSizeImage);
lpOutput = IcCompress.lpOutput;
IcCompress.lpOutput = ptrFixMap16To32(IcCompress.lpOutput, IcCompress.lpbiOutput->biSizeImage);
lpPrev = NULL;
if (IcCompress.lpbiPrev) {
IcCompress.lpbiPrev = (LPBITMAPINFOHEADER)CopyBitmapInfo((DWORD)(DWORD_PTR)IcCompress.lpbiPrev);
if (NULL == IcCompress.lpbiPrev) {
LocalFree((HLOCAL)IcCompress.lpbiOutput);
LocalFree((HLOCAL)IcCompress.lpbiInput);
ptrUnFix16(lpOutput);
ptrUnFix16(lpInput);
ReturnCode = ICERR_MEMORY;
break;
}
lpPrev = IcCompress.lpPrev;
IcCompress.lpPrev = ptrFixMap16To32(IcCompress.lpPrev, IcCompress.lpbiPrev->biSizeImage);
}
lpdwFlags16 = IcCompress.lpdwFlags;
if (lpdwFlags16 != NULL) {
CopyTo32Bit(&dwFlags, lpdwFlags16, sizeof(DWORD));
IcCompress.lpdwFlags = &dwFlags;
}
if (IcCompress.lpckid != NULL) {
lpckid16 = IcCompress.lpckid;
IcCompress.lpckid = &ckid;
}
ReturnCode = ICSendMessage((HIC)(DWORD)hic, (UINT)msg,
(DWORD_PTR)&IcCompress, dwP2);
if (ReturnCode == ICERR_OK) {
CopyTo16Bit( lpbih16, IcCompress.lpbiOutput,
sizeof(BITMAPINFOHEADER) );
if (lpdwFlags16 != NULL) {
CopyTo16Bit(lpdwFlags16, &dwFlags, sizeof(DWORD));
}
if (IcCompress.lpckid != NULL) {
CopyTo16Bit(lpckid16, &ckid, sizeof(DWORD));
}
}
/*
** Free the bitmap info storage regardless of the return code
*/
if (NULL != IcCompress.lpbiPrev) {
LocalFree((HLOCAL)IcCompress.lpbiPrev);
}
LocalFree((HLOCAL)IcCompress.lpbiOutput);
LocalFree((HLOCAL)IcCompress.lpbiInput);
if (NULL != lpPrev)
{
ptrUnFix16(lpPrev);
}
ptrUnFix16(lpOutput);
ptrUnFix16(lpInput);
}
}
break;
case ICM_COMPRESS_GET_SIZE:
case ICM_COMPRESS_BEGIN:
case ICM_COMPRESS_QUERY:
case ICM_DECOMPRESS_BEGIN:
case ICM_DECOMPRESS_GET_PALETTE:
case ICM_DECOMPRESS_SET_PALETTE: // only takes one BitmapInfoHeader
case ICM_DECOMPRESS_QUERY:
{
LPBITMAPINFO bmi1, bmi2;
bmi1 = bmi2 = NULL;
if (dwP1 != 0) {
bmi1 = CopyBitmapInfo((DWORD) (DWORD_PTR) dwP1);
}
if (dwP2 != 0) {
bmi2 = CopyBitmapInfo((DWORD) (DWORD_PTR) dwP2);
}
if ( (NULL == bmi1 && 0 != dwP1) || (NULL == bmi2 && 0 != dwP2) )
{
if (NULL != bmi1) LocalFree((HLOCAL)bmi1);
if (NULL != bmi2) LocalFree((HLOCAL)bmi2);
ReturnCode = (UINT)msg == ICM_COMPRESS_GET_SIZE ? 0 : ICERR_MEMORY;
} else {
ReturnCode = ICSendMessage((HIC)(DWORD)hic,
(UINT)msg,
(DWORD_PTR)bmi1,
(DWORD_PTR)bmi2);
if (bmi2 != NULL) {
// We might have to return data to the 16 bit side.
// The messages for which we have to do this are:
// ICM_DECOMPRESS_QUERY (iff retcode == ICERR_OK)
// ICM_DECOMPRESS_GET_PALETTE (iff retcode >= 0)
if (((ReturnCode == ICERR_OK) && (msg == ICM_DECOMPRESS_QUERY))
|| ((ReturnCode >= 0) && (msg == ICM_DECOMPRESS_GET_PALETTE)))
{
CopyTo16Bit((LPVOID)dwP2, bmi2, GetBMI16Size((LPBITMAPINFOHEADER)bmi2));
}
LocalFree((HLOCAL)bmi2);
}
}
if (bmi1 != NULL) {
LocalFree((HLOCAL)bmi1);
}
}
break;
case ICM_COMPRESS_END:
case ICM_DECOMPRESS_END:
case ICM_DECOMPRESSEX_END:
case ICM_DRAW_END:
case ICM_DRAW_FLUSH:
case ICM_DRAW_START: //??
case ICM_DRAW_STOP: //??
case ICM_DRAW_SETTIME:
case ICM_DRAW_RENDERBUFFER:
case ICM_SETQUALITY:
ReturnCode = ICSendMessage((HIC)(DWORD)hic,
(UINT)msg,
dwP1,
dwP2);
break;
case ICM_DRAW_GETTIME:
case ICM_GETBUFFERSWANTED:
case ICM_GETDEFAULTQUALITY:
case ICM_GETDEFAULTKEYFRAMERATE:
case ICM_GETQUALITY:
{
DWORD dwReturn;
ReturnCode = ICSendMessage((HIC)(DWORD)hic,
(UINT)msg,
(DWORD_PTR)&dwReturn,
dwP2);
// Note: although the definition of these messages state
// that dwParam2 is not used, trouble will brew if the
// decompressor ever tries to use dwParam2. We cannot
// thunk non-standard uses of this parameter.
if (ReturnCode == ICERR_OK) {
CopyTo16Bit((LPVOID)dwP1, &dwReturn, sizeof(DWORD));
}
}
break;
case ICM_COMPRESS_GET_FORMAT:
case ICM_DECOMPRESS_GET_FORMAT:
/*
* This is a tricky one - we first have to find the size of
* the output format so we can get a copy of the (aligned)
* version before passing it back to the app
*/
{
LPBITMAPINFO bmi1, bmi2;
if ( dwP1 == 0L ) {
ReturnCode = ICERR_OK;
break;
}
bmi1 = CopyBitmapInfo((DWORD) (DWORD_PTR) dwP1);
if (bmi1 == NULL) {
ReturnCode = ICERR_MEMORY;
} else {
ReturnCode = ICSendMessage((HIC)(DWORD)hic,
(UINT)msg,
(DWORD_PTR)bmi1,
0);
if (ReturnCode > 0 && dwP2 != 0) {
bmi2 = LocalAlloc(LMEM_FIXED, ReturnCode);
if (bmi2 == NULL) {
/*
* Can't do anything!!! - there's not good return code
*/
ReturnCode = ICERR_MEMORY;
} else {
DWORD Length;
Length = (DWORD) ReturnCode; /* preserve length */
ReturnCode =
ICSendMessage((HIC)(DWORD)hic,
(UINT)msg,
(DWORD_PTR)bmi1,
(DWORD_PTR)bmi2);
if (ReturnCode >= 0) {
CopyTo16Bit((LPVOID)dwP2, bmi2, Length);
}
LocalFree((HLOCAL)bmi2);
}
}
LocalFree((HLOCAL)bmi1);
}
}
break;
case ICM_DECOMPRESS:
if (dwP2 != sizeof(ICDECOMPRESS)) {
ReturnCode = ICERR_BADSIZE;
} else {
ReturnCode = DoICM_DecompressX(hic, msg, dwP1, dwP2);
}
break;
case ICM_DECOMPRESSEX:
case ICM_DECOMPRESSEX_BEGIN:
case ICM_DECOMPRESSEX_QUERY:
if (dwP2 != sizeof(ICDECOMPRESSEX16)) {
ReturnCode = ICERR_BADSIZE;
} else {
ReturnCode = DoICM_DecompressX(hic, msg, dwP1, dwP2);
}
break;
case ICM_DRAW:
/*
* We can't support unknown extensions
*/
if (dwP2 != sizeof(ICDRAW)) {
ReturnCode = ICERR_BADSIZE;
} else {
ICDRAW ICDraw;
BITMAPINFOHEADER bmi;
LPVOID lpData;
CopyTo32Bit(&ICDraw, (LPVOID)dwP1, (DWORD) dwP2);
/*
* We have to assume this is a draw for video
*/
CopyTo32Bit(&bmi, ICDraw.lpFormat, sizeof(BITMAPINFOHEADER));
ICDraw.lpFormat = (LPVOID)&bmi;
lpData = ICDraw.lpData;
ICDraw.lpData = ptrFixMap16To32(ICDraw.lpData, ICDraw.cbData);
ReturnCode = ICSendMessage((HIC)(DWORD)hic,
(UINT)msg,
(DWORD_PTR)&ICDraw,
dwP2);
ptrUnFix16(lpData);
}
break;
case ICM_DRAW_BEGIN:
{
ICDRAWBEGIN InputFormat;
BITMAPINFOHEADER bmihInput;
ConvertICDRAWBEGIN(&InputFormat, &bmihInput, (DWORD) (DWORD_PTR) dwP1);
ReturnCode = ICSendMessage((HIC)(DWORD)hic,
(UINT)msg,
(DWORD_PTR)&InputFormat,
dwP2);
}
break;
case ICM_DRAW_CHANGEPALETTE:
case ICM_DRAW_QUERY:
{
LPBITMAPINFO lpbi;
lpbi = CopyBitmapInfo((DWORD) (DWORD_PTR) dwP1);
if (lpbi == NULL) {
ReturnCode = ICERR_MEMORY;
} else {
ReturnCode = ICSendMessage((HIC)(DWORD_PTR)hic,
(UINT)msg,
(DWORD_PTR)lpbi,
dwP2);
LocalFree((HLOCAL)lpbi);
}
}
break;
case ICM_DRAW_REALIZE:
ReturnCode = ICSendMessage((HIC)(DWORD)hic,
(UINT)msg,
(DWORD_PTR)ThunkHDC(LOWORD(dwP1)),
dwP2);
break;
case ICM_DRAW_WINDOW:
{
RECT_SHORT SRect;
RECT Rect;
CopyTo32Bit(&SRect, (LPVOID)dwP1, sizeof(SRect));
SHORT_RECT_TO_RECT(Rect, SRect);
ReturnCode = ICSendMessage((HIC)(DWORD_PTR)hic,
(UINT)msg,
(DWORD_PTR)&Rect,
dwP2);
}
break;
// The next three messages are INTERNAL ones
case ICM_GETERRORTEXT:
break;
case ICM_GETFORMATNAME:
break;
case ICM_ENUMFORMATS:
break;
case ICM_COMPRESS_FRAMES_INFO:
{
ICCOMPRESSFRAMES icf32;
// We might explode if we get too small a length and start treating
// some of the elements as pointers anyway. Just fail the call.
// (WIN95C bug 8615).
// dwP2 is the length of the 16 bit structure and we only know
// the size of the 32 bit structure, but thankfully they're the
// same.
if (dwP2 < sizeof(ICCOMPRESSFRAMES)) {
ReturnCode = ICERR_BADPARAM;
break;
}
CopyTo32Bit(&icf32, (LPBYTE)dwP1, (DWORD) dwP2);
// Now fix up the 32 bit structure
icf32.PutData = icf32.GetData = NULL; // For safety. should not be used for this message
if (icf32.lpbiOutput) {
icf32.lpbiOutput = CopyBitmapInfoHeader((DWORD)(DWORD_PTR)icf32.lpbiOutput);
}
if (icf32.lpbiInput) {
icf32.lpbiInput = CopyBitmapInfoHeader((DWORD)(DWORD_PTR)icf32.lpbiInput);
}
// According to the documentation, lInput and lOutput are undefined. Treating
// them as pointers is as scary as a really scary thing.
#if 0
lInput = icf32.lInput;
icf32.lInput = (LPARAM)ptrFixMap16To32((LPVOID)icf32.lInput, icf32.lpbiInput->biSizeImage);
lOutput = icf32.lOutput;
icf32.lOutput = (LPARAM)ptrFixMap16To32((LPVOID)icf32.lOutput, icf32.lpbiOutput->biSizeImage);
#endif
// After the fixups have been done, call the actual routine
ReturnCode = ICSendMessage((HIC)(DWORD_PTR)hic,
(UINT)msg,
(DWORD_PTR)&icf32,
dwP2);
#if 0
ptrUnFix16((LPVOID)lOutput);
ptrUnFix16((LPVOID)lInput);
#endif
if (icf32.lpbiOutput) {
LocalFree(icf32.lpbiOutput);
}
if (icf32.lpbiInput) {
LocalFree(icf32.lpbiInput);
}
}
break;
case ICM_DRAW_GET_PALETTE:
{
ReturnCode = ICSendMessage((HIC) hic,
(UINT)msg,
dwP1,
dwP2);
if ((ReturnCode != 0L) && (ReturnCode != ICERR_UNSUPPORTED)) {
#ifdef CHICAGO
ReturnCode = (LRESULT)(WORD)ReturnCode;
#else
FARPROC lpWOWHandle16;
HMODULE hmodWow;
if ( (hmodWow = GetModuleHandle( GET_MAPPING_MODULE_NAME ))
&& (lpWOWHandle16 = GetProcAddress(hmodWow, "WOWHandle16"))) {
ReturnCode = (WORD)(lpWOWHandle16((HANDLE)ReturnCode, (WOW_HANDLE_TYPE)WOW_TYPE_HPALETTE));
} else {
ReturnCode = ICERR_ERROR;
}
#endif
}
}
break;
case ICM_DRAW_SUGGESTFORMAT:
{
ICDRAWSUGGEST icdrwsug;
LPBITMAPINFOHEADER lpbiSuggest16;
LPBITMAPINFOHEADER lpbiSuggest;
DPF(4, "!ICMSendMessage32: ICM_DRAW_SUGGESTFORMAT: dwP1=%08lXh, dwP2=%08lXh", dwP1, dwP2);
//
CopyTo32Bit(&icdrwsug, (LPBYTE)dwP1, (DWORD) dwP2);
lpbiSuggest = NULL;
lpbiSuggest16 = icdrwsug.lpbiSuggest;
if (lpbiSuggest16) {
lpbiSuggest = ptrFixMap16To32(lpbiSuggest16, 0);
}
// Now fix up the 32 bit structure
if (icdrwsug.lpbiIn) {
icdrwsug.lpbiIn = CopyBitmapInfoHeader((DWORD)(DWORD_PTR)icdrwsug.lpbiIn);
}
if (icdrwsug.lpbiSuggest) {
icdrwsug.lpbiSuggest = CopyBitmapInfoHeader((DWORD)(DWORD_PTR)icdrwsug.lpbiSuggest);
}
// After the fixups have been done, call the actual routine
ReturnCode = ICSendMessage((HIC)(DWORD)hic,
(UINT)msg,
(DWORD_PTR)&icdrwsug,
dwP2);
if (icdrwsug.lpbiIn) {
LocalFree(icdrwsug.lpbiIn);
}
// We must return the 32 bit suggested format to 16 bit land
if (icdrwsug.lpbiSuggest) {
if (ReturnCode == ICERR_OK) {
CopyMemory( lpbiSuggest, icdrwsug.lpbiSuggest,
lpbiSuggest->biSize);
}
LocalFree(icdrwsug.lpbiSuggest);
ptrUnFix16(lpbiSuggest16);
}
}
break;
case ICM_SET_STATUS_PROC:
// We do not need to support this under NT. It is much
// easier not to add the callback support... even if we could
// guarantee to be on the right thread to actually do the callback.
//
// This message has its own thunk!
//
ASSERT( FALSE );
default:
ReturnCode = ICERR_UNSUPPORTED;
break;
}
EndThunk()
}
INLINE LRESULT FAR PASCAL ICOpen32(DWORD fccType, DWORD fccHandler, UINT wMode)
{
StartThunk(ICOpen);
DPF(1, "Calling ICOpen %4.4hs %4.4hs %4X", &fccType, &fccHandler, wMode);
ReturnCode = (LONG_PTR)ICOpen(fccType, fccHandler, (UINT)wMode);
EndThunk();
}
INLINE LRESULT FAR PASCAL ICClose32(DWORD hic)
{
StartThunk(ICClose);
ReturnCode = ICClose((HIC)hic);
EndThunk();
}
#endif // _INC_COMPMAN
DWORD ICMThunk32(DWORD dwThunkId,DWORD dw1,DWORD dw2,DWORD dw3,DWORD dw4)
{
//
// Make sure we've got thunking functionality
//
#if 0
{
char szBuffer[80];
char szMsg[32];
switch (dwThunkId) {
case compThunkICSendMessage32:
lstrcpyA( szMsg, "ICSendMessage32" );
break;
case compThunkICInfoInternal32:
lstrcpyA( szMsg, "ICInfoInternal32" );
break;
case compThunkICOpen32:
lstrcpyA( szMsg, "ICOpen32" );
break;
case compThunkICClose32:
lstrcpyA( szMsg, "ICClose32" );
break;
default:
lstrcpyA( szMsg, "Unknown" );
break;
}
wsprintfA( szBuffer, "%18.18s 0x%08X 0x%08X 0x%08X 0x%08X\r\n",
szMsg, dw1, dw2, dw3, dw4);
OutputDebugStringA( szBuffer );
}
#endif
if (ThunksInitialized <= 0) {
HMODULE hMod;
if (ThunksInitialized == -1) {
return (DWORD)ICERR_ERROR;
}
hMod = GetModuleHandle(GET_MAPPING_MODULE_NAME);
if (hMod != NULL) {
GetVDMPointer =
(LPGETVDMPOINTER)GetProcAddress(hMod, GET_VDM_POINTER_NAME);
lpWOWHandle32 =
(LPWOWHANDLE32)GetProcAddress(hMod, GET_HANDLE_MAPPER32 );
lpWOWHandle16 =
(LPWOWHANDLE16)GetProcAddress(hMod, GET_HANDLE_MAPPER16 );
lpWOWCallback16 =
(LPWOWCALLBACK16)GetProcAddress(hMod, GET_CALLBACK16);
}
if ( GetVDMPointer == NULL ||
lpWOWHandle16 == NULL ||
lpWOWHandle32 == NULL ||
lpWOWCallback16 == NULL ) {
ThunksInitialized = -1;
return (DWORD)ICERR_ERROR;
} else {
ThunksInitialized = 1;
}
}
//
// Perform the requested function
//
switch (dwThunkId) {
case compThunkICSendMessage32:
return (DWORD) ICSendMessage32(dw1, (UINT)dw2, dw3, dw4);
break;
case compThunkICInfoInternal32:
return (DWORD) ICInfoInternal32(dw1, dw2, (ICINFOA FAR * )dw3, (ICINFOI FAR *)dw4);
break;
case compThunkICOpen32:
return (DWORD) ICOpen32(dw1, dw2, (UINT)dw3);
break;
case compThunkICClose32:
return (DWORD) ICClose32(dw1);
break;
case compThunkICOpenFunction32:
{
DWORD fccType;
DWORD fccHandler;
UINT uMode;
FARPROC lpfnHandler;
fccType = dw1;
fccHandler = dw2;
uMode = (UINT)dw3;
lpfnHandler = (FARPROC)dw4;
// !!! this won't work
return (DWORD) (DWORD_PTR) ICOpenFunction( fccType, fccHandler, uMode, lpfnHandler );
break;
}
case compThunkICSetStatusProc32:
{
DWORD lpstdS;
DWORD cbStruct;
HIC hic;
LPICSTATUSTHUNKDESC lpstd;
LRESULT lr;
hic = (HIC)dw1;
lpstdS = dw2;
cbStruct = dw3;
lpstd = ptrFixMap16To32((LPVOID)lpstdS, sizeof(*lpstd));
lr = thkSetStatusProc(hic, lpstd);
ptrUnFix16((LPVOID)lpstdS);
return (DWORD)lr;
}
default:
return(0);
}
}
#endif // NT_THUNK32
#ifdef NT_THUNK16
//==========================================================================;
//
//
// --- === 16 BIT SIDE === ---
//
//
//==========================================================================;
//
// --== Global garbage ==--
//
DWORD (FAR PASCAL *lpfnCallproc32W)(DWORD, DWORD, DWORD,
DWORD, DWORD,
LPVOID, DWORD, DWORD);
DWORD (FAR PASCAL *lpfnFreeLibrary32W)(DWORD);
TCHAR gszKernel[] = TEXT("KERNEL");
TCHAR gszLoadLibraryEx32W[] = TEXT("LoadLibraryEx32W");
TCHAR gszFreeLibrary32W[] = TEXT("FreeLibrary32W");
TCHAR gszGetProcAddress32W[] = TEXT("GetProcAddress32W");
TCHAR gszCallproc32W[] = TEXT("CallProc32W");
TCHAR gszThunkEntry[] = TEXT("ICMThunk32");
TCHAR gszMsvfw32[] = TEXT("msvfw32.dll");
//
// --== ==--
//
//--------------------------------------------------------------------------;
//
// PICMGARB thunkInitialize
//
// Description:
// Thunk initialization under NT WOW or Chicago 16-bit.
//
// Arguments:
//
// Return (PICMGARB):
// NULL if thunks are not functional. Otherwise, a pointer to the
// ICMGARB structure for the current process is returned.
//
// History:
// 07/07/94 frankye
//
// Notes:
// The lack of a pig for the current process implies that a thunk
// is being called in the context of a process in which we were never
// loaded. If this happens, we allocate a new pig for this process
// and continue the thunk initialization. Since we were never
// loaded in the process, we *probably* will never be freed. We
// cannot reliably determine when we can thunkTerminate in the process.
//
//--------------------------------------------------------------------------;
PICMGARB WINAPI thunkInitialize(VOID)
{
HMODULE hmodKernel;
DWORD (FAR PASCAL *lpfnLoadLibraryEx32W)(LPCSTR, DWORD, DWORD);
LPVOID (FAR PASCAL *lpfnGetProcAddress32W)(DWORD, LPCSTR);
PICMGARB pig;
if (NULL == (pig = pigFind()))
{
DPF(0, "thunkInitialize: WARNING: ICM called from process %08lXh in which it was never loaded.", GetCurrentProcessId());
DebugErr(DBF_WARNING, "thunkInitialize: WARNING: ICM called from process in which it was never loaded.");
return NULL;
}
//
// If we've already tried and failed...
//
if (pig->fThunkError)
{
return NULL;
}
//
// If we already successfully initialized thunks...
//
if (pig->fThunksInitialized)
{
return pig;
}
//
// Try to initialize our connection the the 32-bit side...
//
DPFS(dbgInit, 1, "thunkInitialize()");
//
// For now, we'll assume we hit an error...
//
pig->fThunkError = TRUE;
//
// See if we can find the thunking routine entry points in KERNEL
//
hmodKernel = GetModuleHandle(gszKernel);
if (hmodKernel == NULL)
{
DPFS(dbgInit, 0, "thunkInitialize: Couldn't GetModuleHandle(kernel)");
return NULL;
}
*(FARPROC *)&lpfnLoadLibraryEx32W =
GetProcAddress(hmodKernel, gszLoadLibraryEx32W);
if (lpfnLoadLibraryEx32W == NULL)
{
DPFS(dbgInit, 0, "thunkInitialize: Couldn't GetProcAddress(kernel, LoadLibraryEx32W)");
return NULL;
}
*(FARPROC *)&lpfnFreeLibrary32W =
GetProcAddress(hmodKernel, gszFreeLibrary32W);
if (lpfnFreeLibrary32W == NULL)
{
DPFS(dbgInit, 0, "thunkInitialize: Couldn't GetProcAddress(kernel, FreeLibrary32W)");
return NULL;
}
*(FARPROC *)&lpfnGetProcAddress32W = GetProcAddress(hmodKernel, gszGetProcAddress32W);
if (lpfnGetProcAddress32W == NULL)
{
DPFS(dbgInit, 0, "thunkInitialize: Couldn't GetProcAddress(kernel, GetProcAddress32W)");
return NULL;
}
*(FARPROC *)&lpfnCallproc32W = GetProcAddress(hmodKernel, gszCallproc32W);
if (lpfnCallproc32W == NULL)
{
DPFS(dbgInit, 0, "thunkInitialize: Couldn't GetProcAddress(kernel, CallProc32W)");
return NULL;
}
//
// See if we can get a pointer to our thunking entry points
//
pig->dwMsvfw32Handle = (*lpfnLoadLibraryEx32W)(gszMsvfw32, 0L, 0L);
if (pig->dwMsvfw32Handle == 0)
{
DPFS(dbgInit, 0, "thunkInitialize: Couldn't LoadLibraryEx32W(msvfw32.dll)");
return NULL;
}
pig->lpvThunkEntry = (*lpfnGetProcAddress32W)(pig->dwMsvfw32Handle, gszThunkEntry);
if (pig->lpvThunkEntry == NULL)
{
DPFS(dbgInit, 0, "thunkInitialize: Couldn't GetProcAddress32W(msvfw32, ICMThunk32)");
(*lpfnFreeLibrary32W)(pig->dwMsvfw32Handle);
return NULL;
}
pig->fThunkError = FALSE;
pig->fThunksInitialized = TRUE;
DPFS(dbgInit, 4, "thunkInitialize: Done!");
return pig;
}
//--------------------------------------------------------------------------;
//
// VOID thunkTerminate
//
// Description:
// Thunk termination under NT WOW or Chicago. Called for each process
// by 16-bit side to terminate thunks.
//
// Arguments:
// PICMGARB pig:
//
// Return (VOID):
//
// History:
// 07/07/94 frankye
//
// Notes:
//
//--------------------------------------------------------------------------;
VOID WINAPI thunkTerminate(PICMGARB pig)
{
ASSERT( NULL != pig );
if (pig->fThunksInitialized)
{
lpfnFreeLibrary32W(pig->dwMsvfw32Handle);
pig->fThunksInitialized = FALSE;
}
return;
}
//--------------------------------------------------------------------------;
//
//
//
//
//--------------------------------------------------------------------------;
/*
* Generate our thunks - refer to msvideo!compman.c for definitions of
* functions.
*
* NOTE - we often rely here on the fact that most of the message
* parameter structures are identical for 16 and 32-bit - ie they
* contain DWORDs and 32-bit pointers.
*/
//--------------------------------------------------------------------------;
//
// LONG thkStatusProc
//
// This is reached by thunking down from the 32-bit thkStatusProc32.
// It will call the client's StatusProc.
//
// Arguments:
// DWORD dwParam : contains segmented ptr to an ICSTATUSTHUNKDESC.
// The ICSTATUSTHUNKDESC is created during the call to ICSetStatusProc.
//
// Return value:
// LONG :
//
//--------------------------------------------------------------------------;
LONG FAR PASCAL _loadds thkStatusProc(DWORD dwParam)
{
LPICSTATUSTHUNKDESC lpstd;
DPFS(dbgThunks, 4, "thkStatusProc()");
lpstd = (LPICSTATUSTHUNKDESC)dwParam;
ASSERT( NULL != lpstd );
ASSERT( NULL != lpstd->fnStatusProcS );
return (lpstd->fnStatusProcS)(lpstd->lParam, (UINT)lpstd->uMsg, lpstd->l);
}
//--------------------------------------------------------------------------;
//
// LRESULT ICSendSetStatusProc32
//
// Called from 16-bit ICSendMessage to thunk the ICM_SET_STATUS_PROC
// message to 32-bits
//
// Arguments:
// HIC hic :
//
// LPICSETSTATUSPROC lpissp :
//
// DWORD : cbStruct
//
// Return value:
// LRESULT :
//
// Notes:
// !!! For Daytona, we fail this. If we ever decide to support this
// on Daytona, then I think we have much more work to do since linear
// addresses in use by the 32-bit codec may change when the status
// callback thunks down to 16-bits. On Chicago, all the linear addresses
// our fixed when we convert from the segmented address to the linear
// address. WHY DOESN'T NT GIVE US AN EASY WAY TO FIX LINEAR ADDRESSES?
//
//--------------------------------------------------------------------------;
LRESULT WINAPI ICSendSetStatusProc32(HIC hic, ICSETSTATUSPROC FAR* lpissp, DWORD cbStruct)
{
#ifdef DAYTONA
return ICERR_UNSUPPORTED;
#else
PICMGARB pig;
PIC pic;
LPICSTATUSTHUNKDESC lpstd;
LRESULT lr;
DPFS(dbgThunks, 4, "ICSendSetStatusProc32()");
if (NULL == (pig = thunkInitialize())) {
return ICERR_ERROR;
}
pic = (PIC)hic;
//
// This should never fail since the structure was allocated by
// our own code in the ICSetStatusProc macro.
//
if (cbStruct < sizeof(*lpissp)) {
ASSERT( FALSE );
return ICERR_BADPARAM;
}
//
//
//
if (NULL != pic->lpstd) {
DPFS(dbgThunks, 1, "ICSendSetStatusProc32: replacing existing status proc!");
GlobalUnfix(GlobalPtrHandle(pic->lpstd));
GlobalFreePtr(pic->lpstd);
pic->lpstd = NULL;
}
//
// Allocate a ICSTATUSTHUNKDESC status thunk descriptor. We fix it
// in linear memory here so that it's linear address remains constant
// throughout it use. It's linear address will be given to the 32-bit
// codec which will cache it for use in callbacks.
//
lpstd = (LPICSTATUSTHUNKDESC)GlobalAllocPtr(GHND, sizeof(*lpstd));
if (NULL == lpstd) {
return (ICERR_MEMORY);
}
GlobalFix(GlobalPtrHandle(lpstd));
pic->lpstd = lpstd;
lpstd->lpstdS = lpstd;
lpstd->dwFlags = lpissp->dwFlags;
lpstd->lParam = lpissp->lParam;
lpstd->fnStatusProcS = lpissp->Status;
lpstd->pfnthkStatusProc16S = thkStatusProc;
lr = (LRESULT)(*lpfnCallproc32W)(compThunkICSetStatusProc32,
(DWORD)pic->h32,
(DWORD)lpstd,
(DWORD)0,
(DWORD)0,
pig->lpvThunkEntry,
0L, // Don't map pointers
5L);
if (0 != lr) {
DPFS(dbgThunks, 1, "ICSendSetStatusProc32: fail");
GlobalUnfix(GlobalPtrHandle(pic->lpstd));
GlobalFreePtr(pic->lpstd);
pic->lpstd = NULL;
}
return lr;
#endif
}
BOOL FAR PASCAL ICInfoInternal32(DWORD fccType, DWORD fccHandler, ICINFO FAR * lpicInfo, ICINFOI FAR * lpicInfoI)
{
PICMGARB pig;
DPFS(dbgThunks, 4, "ICInfoInternal32");
if (NULL == (pig = thunkInitialize()))
{
return FALSE;
}
return (BOOL)(*lpfnCallproc32W)(compThunkICInfoInternal32,
(DWORD)fccType,
(DWORD)fccHandler,
(DWORD)lpicInfo,
(DWORD)lpicInfoI,
pig->lpvThunkEntry,
0L, // Don't map pointers
5L);
}
LRESULT FAR PASCAL ICSendMessage32(DWORD hic, UINT msg, DWORD dwP1, DWORD dwP2)
{
PICMGARB pig;
DPFS(dbgThunks, 4, "ICSendMessage32(hic=%08lXh, msg=%04Xh, dwP1=%08lXh, dwP2=%08lXh)", hic, msg, dwP1, dwP2);
if (NULL == (pig = thunkInitialize()))
{
switch (msg) {
case ICM_GETSTATE:
case ICM_SETSTATE:
case ICM_GETINFO:
case ICM_COMPRESS_GET_SIZE:
return 0;
}
return (LRESULT)ICERR_ERROR;
}
return (LRESULT)(*lpfnCallproc32W)(compThunkICSendMessage32,
(DWORD)hic,
(DWORD)msg,
(DWORD)dwP1,
(DWORD)dwP2,
pig->lpvThunkEntry,
0L, // Don't map pointers
5L);
}
LRESULT FAR PASCAL ICOpen32(DWORD fccType, DWORD fccHandler, UINT wMode)
{
PICMGARB pig;
DPFS(dbgThunks, 4, "ICOpen32");
if (NULL == (pig = thunkInitialize()))
{
return NULL;
}
return (DWORD)(lpfnCallproc32W)(compThunkICOpen32,
(DWORD)fccType,
(DWORD)fccHandler,
(DWORD)wMode,
(DWORD)0L,
pig->lpvThunkEntry,
0L, // Don't map pointers
5L);
}
LRESULT FAR PASCAL ICOpenFunction32(DWORD fccType, DWORD fccHandler, UINT wMode, FARPROC lpfnHandler)
{
PICMGARB pig;
DPFS(dbgThunks, 4, "ICOpenFunction32");
if (NULL == (pig = thunkInitialize()))
{
return NULL;
}
return (LRESULT)(lpfnCallproc32W)(compThunkICOpenFunction32,
(DWORD)fccType,
(DWORD)fccHandler,
(DWORD)wMode,
(DWORD)lpfnHandler,
pig->lpvThunkEntry,
0L, // Don't map pointers
5L);
}
LRESULT FAR PASCAL ICClose32(DWORD hic)
{
PICMGARB pig;
DPFS(dbgThunks, 4, "ICClose32");
if (NULL == (pig = thunkInitialize()))
{
return (LRESULT)ICERR_ERROR;
}
return (DWORD)(lpfnCallproc32W)(compThunkICClose32,
(DWORD)hic,
(DWORD)0L,
(DWORD)0L,
(DWORD)0L,
pig->lpvThunkEntry,
0L, // Don't map pointers
5L);
}
#endif // NT_THUNK16
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