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wine/dlls/winmm/mmio.c
Dmitry Timoshkov d40e003303 winmm: MMIO_ALLOCBUF is ignored if mmioOpen gets a valid buffer. 
Existing tests show that MMIO_ALLOCBUF flag is dropped if a valid buffer
is being passed to mmioOpen, that means the buffer is valid in that case.
2008-10-21 13:22:51 +02:00

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/*
* MMIO functions
*
* Copyright 1998 Andrew Taylor
* Copyright 1998 Ove Kåven
* Copyright 2000,2002 Eric Pouech
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
/* Still to be done:
* + correct handling of global/local IOProcs (and temporary IOProcs)
* + mode of mmio objects is not used (read vs write vs readwrite)
* + thread safeness
* + 32 A <=> W message mapping
*/
#include <ctype.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "mmsystem.h"
#include "winemm.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(mmio);
LRESULT (*pFnMmioCallback16)(DWORD,LPMMIOINFO,UINT,LPARAM,LPARAM) /* = NULL */;
static WINE_MMIO *MMIOList;
/**************************************************************************
* mmioDosIOProc [internal]
*/
static LRESULT CALLBACK mmioDosIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
LPARAM lParam1, LPARAM lParam2)
{
LRESULT ret = MMSYSERR_NOERROR;
TRACE("(%p, %X, 0x%lx, 0x%lx);\n", lpmmioinfo, uMessage, lParam1, lParam2);
switch (uMessage) {
case MMIOM_OPEN:
{
/* Parameters:
* lParam1 = szFileName parameter from mmioOpen
* lParam2 = reserved
* Returns: zero on success, error code on error
* NOTE: lDiskOffset automatically set to zero
*/
LPCSTR szFileName = (LPCSTR)lParam1;
if (lpmmioinfo->dwFlags & MMIO_GETTEMP) {
FIXME("MMIO_GETTEMP not implemented\n");
return MMIOERR_CANNOTOPEN;
}
/* if filename NULL, assume open file handle in adwInfo[0] */
if (szFileName) {
OFSTRUCT ofs;
lpmmioinfo->adwInfo[0] = (DWORD)OpenFile(szFileName, &ofs, lpmmioinfo->dwFlags & 0xFFFF);
}
if (lpmmioinfo->adwInfo[0] == (DWORD)HFILE_ERROR)
ret = MMIOERR_CANNOTOPEN;
}
break;
case MMIOM_CLOSE:
/* Parameters:
* lParam1 = wFlags parameter from mmioClose
* lParam2 = unused
* Returns: zero on success, error code on error
*/
if (!(lParam1 & MMIO_FHOPEN))
_lclose((HFILE)lpmmioinfo->adwInfo[0]);
break;
case MMIOM_READ:
/* Parameters:
* lParam1 = huge pointer to read buffer
* lParam2 = number of bytes to read
* Returns: number of bytes read, 0 for EOF, -1 for error (error code
* in wErrorRet)
*/
ret = _lread((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
if (ret != -1)
lpmmioinfo->lDiskOffset += ret;
break;
case MMIOM_WRITE:
case MMIOM_WRITEFLUSH:
/* no internal buffering, so WRITEFLUSH handled same as WRITE */
/* Parameters:
* lParam1 = huge pointer to write buffer
* lParam2 = number of bytes to write
* Returns: number of bytes written, -1 for error (error code in
* wErrorRet)
*/
ret = _hwrite((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
if (ret != -1)
lpmmioinfo->lDiskOffset += ret;
break;
case MMIOM_SEEK:
/* Parameters:
* lParam1 = new position
* lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
* Returns: new file postion, -1 on error
*/
ret = _llseek((HFILE)lpmmioinfo->adwInfo[0], (LONG)lParam1, (LONG)lParam2);
if (ret != -1)
lpmmioinfo->lDiskOffset = ret;
return ret;
case MMIOM_RENAME:
/* Parameters:
* lParam1 = old name
* lParam2 = new name
* Returns: zero on success, non-zero on failure
*/
if (!MoveFileA((const char*)lParam1, (const char*)lParam2))
ret = MMIOERR_FILENOTFOUND;
break;
default:
FIXME("unexpected message %u\n", uMessage);
return 0;
}
return ret;
}
/**************************************************************************
* mmioMemIOProc [internal]
*/
static LRESULT CALLBACK mmioMemIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
LPARAM lParam1, LPARAM lParam2)
{
TRACE("(%p,0x%04x,0x%08lx,0x%08lx)\n", lpmmioinfo, uMessage, lParam1, lParam2);
switch (uMessage) {
case MMIOM_OPEN:
/* Parameters:
* lParam1 = filename (must be NULL)
* lParam2 = reserved
* Returns: zero on success, error code on error
* NOTE: lDiskOffset automatically set to zero
*/
/* FIXME: io proc shouldn't change it */
if (!(lpmmioinfo->dwFlags & MMIO_CREATE))
lpmmioinfo->pchEndRead = lpmmioinfo->pchEndWrite;
lpmmioinfo->adwInfo[0] = HFILE_ERROR;
return 0;
case MMIOM_CLOSE:
/* Parameters:
* lParam1 = wFlags parameter from mmioClose
* lParam2 = unused
* Returns: zero on success, error code on error
*/
return 0;
case MMIOM_READ:
/* Parameters:
* lParam1 = huge pointer to read buffer
* lParam2 = number of bytes to read
* Returns: number of bytes read, 0 for EOF, -1 for error (error code
* in wErrorRet)
* NOTE: lDiskOffset should be updated
*/
FIXME("MMIOM_READ on memory files should not occur, buffer may be lost!\n");
return 0;
case MMIOM_WRITE:
case MMIOM_WRITEFLUSH:
/* no internal buffering, so WRITEFLUSH handled same as WRITE */
/* Parameters:
* lParam1 = huge pointer to write buffer
* lParam2 = number of bytes to write
* Returns: number of bytes written, -1 for error (error code in
* wErrorRet)
* NOTE: lDiskOffset should be updated
*/
FIXME("MMIOM_WRITE on memory files should not occur, buffer may be lost!\n");
return 0;
case MMIOM_SEEK:
/* Parameters:
* lParam1 = new position
* lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
* Returns: new file postion, -1 on error
* NOTE: lDiskOffset should be updated
*/
FIXME("MMIOM_SEEK on memory files should not occur, buffer may be lost!\n");
return -1;
default:
FIXME("unexpected message %u\n", uMessage);
return 0;
}
}
/* This array will be the entire list for most apps
* Note that temporary ioProcs will be stored with a 0 fourCC code
*/
static struct IOProcList defaultProcs[] = {
{&defaultProcs[1], FOURCC_DOS, (LPMMIOPROC)mmioDosIOProc, MMIO_PROC_32A, 0},
{NULL, FOURCC_MEM, (LPMMIOPROC)mmioMemIOProc, MMIO_PROC_32A, 0},
};
static struct IOProcList* pIOProcListAnchor = &defaultProcs[0];
/****************************************************************
* MMIO_FindProcNode [INTERNAL]
*
* Finds the ProcList node associated with a given FOURCC code.
*/
static struct IOProcList* MMIO_FindProcNode(FOURCC fccIOProc)
{
struct IOProcList* pListNode;
for (pListNode = pIOProcListAnchor; pListNode; pListNode = pListNode->pNext) {
if (pListNode->fourCC == fccIOProc) {
return pListNode;
}
}
return NULL;
}
/****************************************************************
* MMIO_InstallIOProc [INTERNAL]
*/
LPMMIOPROC MMIO_InstallIOProc(FOURCC fccIOProc, LPMMIOPROC pIOProc,
DWORD dwFlags, enum mmioProcType type)
{
LPMMIOPROC lpProc = NULL;
struct IOProcList* pListNode;
struct IOProcList** ppListNode;
TRACE("(%08x, %p, %08X, %i)\n", fccIOProc, pIOProc, dwFlags, type);
if (dwFlags & MMIO_GLOBALPROC)
FIXME("Global procedures not implemented\n");
/* just handle the known procedures for now */
switch (dwFlags & (MMIO_INSTALLPROC|MMIO_REMOVEPROC|MMIO_FINDPROC)) {
case MMIO_INSTALLPROC:
/* Create new entry for the IOProc list */
pListNode = HeapAlloc(GetProcessHeap(), 0, sizeof(*pListNode));
if (pListNode) {
/* Fill in this node */
pListNode->fourCC = fccIOProc;
pListNode->pIOProc = pIOProc;
pListNode->type = type;
pListNode->count = 0;
/* Stick it on the end of the list */
pListNode->pNext = pIOProcListAnchor;
pIOProcListAnchor = pListNode;
/* Return this IOProc - that's how the caller knows we succeeded */
lpProc = pIOProc;
}
break;
case MMIO_REMOVEPROC:
/*
* Search for the node that we're trying to remove
* We search for a matching fourCC code if it's non null, or the proc
* address otherwise
* note that this method won't find the first item on the list, but
* since the first two items on this list are ones we won't
* let the user delete anyway, that's okay
*/
ppListNode = &pIOProcListAnchor;
while ((*ppListNode) &&
((fccIOProc != 0) ?
(*ppListNode)->fourCC != fccIOProc :
(*ppListNode)->pIOProc != pIOProc))
ppListNode = &((*ppListNode)->pNext);
if (*ppListNode) { /* found it */
/* FIXME: what should be done if an open mmio object uses this proc ?
* shall we return an error, nuke the mmio object ?
*/
if ((*ppListNode)->count) {
ERR("Cannot remove a mmIOProc while in use\n");
break;
}
/* remove it, but only if it isn't builtin */
if ((*ppListNode) >= defaultProcs &&
(*ppListNode) < defaultProcs + sizeof(defaultProcs)) {
WARN("Tried to remove built-in mmio proc. Skipping\n");
} else {
/* Okay, nuke it */
struct IOProcList* ptmpNode = *ppListNode;
lpProc = (*ppListNode)->pIOProc;
*ppListNode = (*ppListNode)->pNext;
HeapFree(GetProcessHeap(), 0, ptmpNode);
}
}
break;
case MMIO_FINDPROC:
if ((pListNode = MMIO_FindProcNode(fccIOProc))) {
lpProc = pListNode->pIOProc;
}
break;
}
return lpProc;
}
/****************************************************************
* send_message [INTERNAL]
*/
static LRESULT send_message(struct IOProcList* ioProc, LPMMIOINFO mmioinfo,
DWORD wMsg, LPARAM lParam1,
LPARAM lParam2, enum mmioProcType type)
{
LRESULT result = MMSYSERR_ERROR;
LPARAM lp1 = lParam1, lp2 = lParam2;
if (!ioProc) {
ERR("brrr\n");
result = MMSYSERR_INVALPARAM;
}
switch (ioProc->type) {
case MMIO_PROC_16:
if (pFnMmioCallback16)
result = pFnMmioCallback16((DWORD)ioProc->pIOProc,
mmioinfo, wMsg, lp1, lp2);
break;
case MMIO_PROC_32A:
case MMIO_PROC_32W:
if (ioProc->type != type) {
/* map (lParam1, lParam2) into (lp1, lp2) 32 A<=>W */
FIXME("NIY 32 A<=>W mapping\n");
}
result = (ioProc->pIOProc)((LPSTR)mmioinfo, wMsg, lp1, lp2);
#if 0
if (ioProc->type != type) {
/* unmap (lParam1, lParam2) into (lp1, lp2) 32 A<=>W */
}
#endif
break;
default:
FIXME("Internal error\n");
}
return result;
}
/**************************************************************************
* MMIO_ParseExtA [internal]
*
* Parses a filename for the extension.
*
* RETURNS
* The FOURCC code for the extension if found, else 0.
*/
static FOURCC MMIO_ParseExtA(LPCSTR szFileName)
{
/* Filenames are of the form file.ext{+ABC}
For now, we take the last '+' if present */
FOURCC ret = 0;
/* Note that ext{Start,End} point to the . and + respectively */
LPSTR extEnd;
LPSTR extStart;
TRACE("(%s)\n", debugstr_a(szFileName));
if (!szFileName)
return ret;
/* Find the last '.' */
extStart = strrchr(szFileName,'.');
if (!extStart) {
ERR("No . in szFileName: %s\n", debugstr_a(szFileName));
} else {
CHAR ext[5];
/* Find the '+' afterwards */
extEnd = strchr(extStart,'+');
if (extEnd) {
if (extEnd - extStart - 1 > 4)
WARN("Extension length > 4\n");
lstrcpynA(ext, extStart + 1, min(extEnd-extStart,5));
} else {
/* No + so just an extension */
if (strlen(extStart) > 4) {
WARN("Extension length > 4\n");
}
lstrcpynA(ext, extStart + 1, 5);
}
TRACE("Got extension: %s\n", debugstr_a(ext));
/* FOURCC codes identifying file-extensions must be uppercase */
ret = mmioStringToFOURCCA(ext, MMIO_TOUPPER);
}
return ret;
}
/**************************************************************************
* MMIO_Get [internal]
*
* Retrieves the mmio object from current process
*/
LPWINE_MMIO MMIO_Get(HMMIO h)
{
LPWINE_MMIO wm = NULL;
EnterCriticalSection(&WINMM_cs);
for (wm = MMIOList; wm; wm = wm->lpNext) {
if (wm->info.hmmio == h)
break;
}
LeaveCriticalSection(&WINMM_cs);
return wm;
}
/**************************************************************************
* MMIO_Create [internal]
*
* Creates an internal representation for a mmio instance
*/
static LPWINE_MMIO MMIO_Create(void)
{
static WORD MMIO_counter = 0;
LPWINE_MMIO wm;
wm = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WINE_MMIO));
if (wm) {
EnterCriticalSection(&WINMM_cs);
/* lookup next unallocated WORD handle, with a non NULL value */
while (++MMIO_counter == 0 || MMIO_Get((HMMIO)(ULONG_PTR)MMIO_counter));
wm->info.hmmio = (HMMIO)(ULONG_PTR)MMIO_counter;
wm->lpNext = MMIOList;
MMIOList = wm;
LeaveCriticalSection(&WINMM_cs);
}
return wm;
}
/**************************************************************************
* MMIO_Destroy [internal]
*-
* Destroys an internal representation for a mmio instance
*/
static BOOL MMIO_Destroy(LPWINE_MMIO wm)
{
LPWINE_MMIO* m;
EnterCriticalSection(&WINMM_cs);
/* search for the matching one... */
m = &MMIOList;
while (*m && *m != wm) m = &(*m)->lpNext;
/* ...and destroy */
if (*m) {
*m = (*m)->lpNext;
HeapFree(GetProcessHeap(), 0, wm);
wm = NULL;
}
LeaveCriticalSection(&WINMM_cs);
return wm ? FALSE : TRUE;
}
/****************************************************************
* MMIO_Flush [INTERNAL]
*/
static MMRESULT MMIO_Flush(WINE_MMIO* wm, UINT uFlags)
{
if (wm->info.cchBuffer && (wm->info.fccIOProc != FOURCC_MEM)) {
/* not quite sure what to do here, but I'll guess */
if (wm->info.dwFlags & MMIO_DIRTY) {
/* FIXME: error handling */
send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
wm->info.lBufOffset, SEEK_SET, MMIO_PROC_32A);
send_message(wm->ioProc, &wm->info, MMIOM_WRITE,
(LPARAM)wm->info.pchBuffer,
wm->info.pchNext - wm->info.pchBuffer, MMIO_PROC_32A);
}
if (uFlags & MMIO_EMPTYBUF)
wm->info.pchNext = wm->info.pchEndRead = wm->info.pchBuffer;
}
wm->info.dwFlags &= ~MMIO_DIRTY;
return MMSYSERR_NOERROR;
}
/***************************************************************************
* MMIO_GrabNextBuffer [INTERNAL]
*/
static LONG MMIO_GrabNextBuffer(LPWINE_MMIO wm, int for_read)
{
LONG size = wm->info.cchBuffer;
TRACE("bo=%x do=%x of=%lx\n",
wm->info.lBufOffset, wm->info.lDiskOffset,
send_message(wm->ioProc, &wm->info, MMIOM_SEEK, 0, SEEK_CUR, MMIO_PROC_32A));
wm->info.lBufOffset = wm->info.lDiskOffset;
wm->info.pchNext = wm->info.pchBuffer;
wm->info.pchEndRead = wm->info.pchBuffer;
wm->info.pchEndWrite = wm->info.pchBuffer + wm->info.cchBuffer;
wm->bBufferLoaded = TRUE;
if (for_read) {
size = send_message(wm->ioProc, &wm->info, MMIOM_READ,
(LPARAM)wm->info.pchBuffer, size, MMIO_PROC_32A);
if (size > 0)
wm->info.pchEndRead += size;
else
wm->bBufferLoaded = FALSE;
}
return size;
}
/***************************************************************************
* MMIO_SetBuffer [INTERNAL]
*/
static MMRESULT MMIO_SetBuffer(WINE_MMIO* wm, void* pchBuffer, LONG cchBuffer,
UINT uFlags)
{
TRACE("(%p %p %d %u)\n", wm, pchBuffer, cchBuffer, uFlags);
if (cchBuffer > 0xFFFF)
WARN("Untested handling of huge mmio buffers (%d >= 64k)\n", cchBuffer);
if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
return MMIOERR_CANNOTWRITE;
/* free previous buffer if allocated */
if (wm->info.dwFlags & MMIO_ALLOCBUF) {
HeapFree(GetProcessHeap(), 0, wm->info.pchBuffer);
wm->info.pchBuffer = NULL;
wm->info.dwFlags &= ~MMIO_ALLOCBUF;
}
if (pchBuffer) {
wm->info.pchBuffer = pchBuffer;
} else if (cchBuffer) {
if (!(wm->info.pchBuffer = HeapAlloc(GetProcessHeap(), 0, cchBuffer)))
return MMIOERR_OUTOFMEMORY;
wm->info.dwFlags |= MMIO_ALLOCBUF;
} else {
wm->info.pchBuffer = NULL;
}
wm->info.cchBuffer = cchBuffer;
wm->info.pchNext = wm->info.pchBuffer;
wm->info.pchEndRead = wm->info.pchBuffer;
wm->info.pchEndWrite = wm->info.pchBuffer + cchBuffer;
wm->info.lBufOffset = wm->info.lDiskOffset;
wm->bBufferLoaded = FALSE;
return MMSYSERR_NOERROR;
}
/**************************************************************************
* MMIO_Open [internal]
*/
HMMIO MMIO_Open(LPSTR szFileName, MMIOINFO* refmminfo, DWORD dwOpenFlags,
enum mmioProcType type)
{
LPWINE_MMIO wm;
MMIOINFO mmioinfo;
TRACE("('%s', %p, %08X, %d);\n", szFileName, refmminfo, dwOpenFlags, type);
if (!refmminfo) {
refmminfo = &mmioinfo;
mmioinfo.fccIOProc = 0;
mmioinfo.pIOProc = NULL;
mmioinfo.pchBuffer = NULL;
mmioinfo.cchBuffer = 0;
type = MMIO_PROC_32A;
}
if (dwOpenFlags & (MMIO_PARSE|MMIO_EXIST)) {
char buffer[MAX_PATH];
if (GetFullPathNameA(szFileName, sizeof(buffer), buffer, NULL) >= sizeof(buffer))
return (HMMIO)FALSE;
if ((dwOpenFlags & MMIO_EXIST) && (GetFileAttributesA(buffer) == INVALID_FILE_ATTRIBUTES))
return (HMMIO)FALSE;
strcpy(szFileName, buffer);
return (HMMIO)TRUE;
}
if ((wm = MMIO_Create()) == NULL)
return 0;
/* If both params are NULL, then parse the file name if available */
if (refmminfo->fccIOProc == 0 && refmminfo->pIOProc == NULL) {
wm->info.fccIOProc = MMIO_ParseExtA(szFileName);
/* Handle any unhandled/error case. Assume DOS file */
if (wm->info.fccIOProc == 0)
wm->info.fccIOProc = FOURCC_DOS;
if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) {
/* If not found, retry with FOURCC_DOS */
wm->info.fccIOProc = FOURCC_DOS;
if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc)))
goto error2;
}
wm->bTmpIOProc = FALSE;
}
/* if just the four character code is present, look up IO proc */
else if (refmminfo->pIOProc == NULL) {
wm->info.fccIOProc = refmminfo->fccIOProc;
if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
wm->bTmpIOProc = FALSE;
}
/* if IO proc specified, use it and specified four character code */
else {
wm->info.fccIOProc = refmminfo->fccIOProc;
MMIO_InstallIOProc(wm->info.fccIOProc, refmminfo->pIOProc,
MMIO_INSTALLPROC, type);
if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
assert(wm->ioProc->pIOProc == refmminfo->pIOProc);
wm->bTmpIOProc = TRUE;
}
wm->ioProc->count++;
wm->info.dwFlags = dwOpenFlags;
if (dwOpenFlags & MMIO_ALLOCBUF) {
refmminfo->wErrorRet = MMIO_SetBuffer(wm, refmminfo->pchBuffer,
refmminfo->cchBuffer ? refmminfo->cchBuffer : MMIO_DEFAULTBUFFER, 0);
if (refmminfo->wErrorRet != MMSYSERR_NOERROR)
goto error1;
} else {
refmminfo->wErrorRet = MMIO_SetBuffer(wm, refmminfo->pchBuffer, refmminfo->cchBuffer, 0);
if (refmminfo->wErrorRet != MMSYSERR_NOERROR)
goto error1;
}
if (wm->info.fccIOProc == FOURCC_MEM && !(wm->info.dwFlags & MMIO_ALLOCBUF))
wm->bBufferLoaded = TRUE;
/* see mmioDosIOProc for that one */
wm->info.adwInfo[0] = refmminfo->adwInfo[0];
/* call IO proc to actually open file */
refmminfo->wErrorRet = send_message(wm->ioProc, &wm->info, MMIOM_OPEN,
(LPARAM)szFileName, 0, MMIO_PROC_32A);
/* grab file size, when possible */
wm->dwFileSize = GetFileSize((HANDLE)wm->info.adwInfo[0], NULL);
if (refmminfo->wErrorRet == 0)
return wm->info.hmmio;
error1:
if (wm->ioProc) wm->ioProc->count--;
error2:
MMIO_Destroy(wm);
return 0;
}
/**************************************************************************
* mmioOpenW [WINMM.@]
*/
HMMIO WINAPI mmioOpenW(LPWSTR szFileName, MMIOINFO* lpmmioinfo,
DWORD dwOpenFlags)
{
HMMIO ret;
LPSTR szFn = NULL;
if (szFileName)
{
INT len = WideCharToMultiByte( CP_ACP, 0, szFileName, -1, NULL, 0, NULL, NULL );
szFn = HeapAlloc( GetProcessHeap(), 0, len );
if (!szFn) return NULL;
WideCharToMultiByte( CP_ACP, 0, szFileName, -1, szFn, len, NULL, NULL );
}
ret = MMIO_Open(szFn, lpmmioinfo, dwOpenFlags, MMIO_PROC_32W);
HeapFree(GetProcessHeap(), 0, szFn);
return ret;
}
/**************************************************************************
* mmioOpenA [WINMM.@]
*/
HMMIO WINAPI mmioOpenA(LPSTR szFileName, MMIOINFO* lpmmioinfo,
DWORD dwOpenFlags)
{
return MMIO_Open(szFileName, lpmmioinfo, dwOpenFlags, MMIO_PROC_32A);
}
/**************************************************************************
* mmioClose [WINMM.@]
*/
MMRESULT WINAPI mmioClose(HMMIO hmmio, UINT uFlags)
{
LPWINE_MMIO wm;
MMRESULT result;
TRACE("(%p, %04X);\n", hmmio, uFlags);
if ((wm = MMIO_Get(hmmio)) == NULL)
return MMSYSERR_INVALHANDLE;
if ((result = MMIO_Flush(wm, 0)) != MMSYSERR_NOERROR)
return result;
result = send_message(wm->ioProc, &wm->info, MMIOM_CLOSE,
uFlags, 0, MMIO_PROC_32A);
MMIO_SetBuffer(wm, NULL, 0, 0);
wm->ioProc->count--;
if (wm->bTmpIOProc)
MMIO_InstallIOProc(wm->info.fccIOProc, wm->ioProc->pIOProc,
MMIO_REMOVEPROC, wm->ioProc->type);
MMIO_Destroy(wm);
return result;
}
/**************************************************************************
* mmioRead [WINMM.@]
*/
LONG WINAPI mmioRead(HMMIO hmmio, HPSTR pch, LONG cch)
{
LPWINE_MMIO wm;
LONG count;
TRACE("(%p, %p, %d);\n", hmmio, pch, cch);
if ((wm = MMIO_Get(hmmio)) == NULL)
return -1;
/* unbuffered case first */
if (!wm->info.pchBuffer)
return send_message(wm->ioProc, &wm->info, MMIOM_READ,
(LPARAM)pch, cch, MMIO_PROC_32A);
/* first try from current buffer */
if (wm->info.pchNext != wm->info.pchEndRead) {
count = wm->info.pchEndRead - wm->info.pchNext;
if (count > cch || count < 0) count = cch;
memcpy(pch, wm->info.pchNext, count);
wm->info.pchNext += count;
pch += count;
cch -= count;
} else
count = 0;
if (cch && (wm->info.fccIOProc != FOURCC_MEM)) {
assert(wm->info.cchBuffer);
while (cch) {
LONG size;
size = MMIO_GrabNextBuffer(wm, TRUE);
if (size <= 0) break;
if (size > cch) size = cch;
memcpy(pch, wm->info.pchBuffer, size);
wm->info.pchNext += size;
pch += size;
cch -= size;
count += size;
}
}
TRACE("count=%d\n", count);
return count;
}
/**************************************************************************
* mmioWrite [WINMM.@]
*/
LONG WINAPI mmioWrite(HMMIO hmmio, HPCSTR pch, LONG cch)
{
LPWINE_MMIO wm;
LONG count;
TRACE("(%p, %p, %d);\n", hmmio, pch, cch);
if ((wm = MMIO_Get(hmmio)) == NULL)
return -1;
if (wm->info.cchBuffer) {
LONG bytesW = 0;
count = 0;
while (cch) {
if (wm->info.pchNext != wm->info.pchEndWrite) {
count = wm->info.pchEndWrite - wm->info.pchNext;
if (count > cch || count < 0) count = cch;
memcpy(wm->info.pchNext, pch, count);
wm->info.pchNext += count;
pch += count;
cch -= count;
bytesW += count;
wm->info.dwFlags |= MMIO_DIRTY;
} else {
if (wm->info.fccIOProc == FOURCC_MEM) {
if (wm->info.adwInfo[0]) {
/* from where would we get the memory handle? */
FIXME("memory file expansion not implemented!\n");
break;
} else break;
}
}
if (wm->info.pchNext == wm->info.pchEndWrite)
{
MMIO_Flush(wm, MMIO_EMPTYBUF);
MMIO_GrabNextBuffer(wm, FALSE);
}
else break;
}
count = bytesW;
} else {
count = send_message(wm->ioProc, &wm->info, MMIOM_WRITE,
(LPARAM)pch, cch, MMIO_PROC_32A);
wm->info.lBufOffset = wm->info.lDiskOffset;
}
TRACE("bytes written=%d\n", count);
return count;
}
/**************************************************************************
* mmioSeek [WINMM.@]
*/
LONG WINAPI mmioSeek(HMMIO hmmio, LONG lOffset, INT iOrigin)
{
LPWINE_MMIO wm;
LONG offset;
TRACE("(%p, %08X, %d);\n", hmmio, lOffset, iOrigin);
if ((wm = MMIO_Get(hmmio)) == NULL)
return MMSYSERR_INVALHANDLE;
/* not buffered, direct seek on file */
if (!wm->info.pchBuffer)
return send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
lOffset, iOrigin, MMIO_PROC_32A);
switch (iOrigin) {
case SEEK_SET:
offset = lOffset;
break;
case SEEK_CUR:
offset = wm->info.lBufOffset + (wm->info.pchNext - wm->info.pchBuffer) + lOffset;
break;
case SEEK_END:
offset = ((wm->info.fccIOProc == FOURCC_MEM)? wm->info.cchBuffer : wm->dwFileSize) - lOffset;
break;
default:
return -1;
}
if (offset && offset >= wm->dwFileSize && wm->info.fccIOProc != FOURCC_MEM) {
/* should check that write mode exists */
if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
return -1;
wm->info.lBufOffset = offset;
wm->info.pchEndRead = wm->info.pchBuffer;
wm->info.pchEndWrite = wm->info.pchBuffer + wm->info.cchBuffer;
if ((wm->info.dwFlags & MMIO_RWMODE) == MMIO_READ) {
wm->info.lDiskOffset = wm->dwFileSize;
}
} else if ((wm->info.cchBuffer > 0) &&
((offset < wm->info.lBufOffset) ||
(offset >= wm->info.lBufOffset + wm->info.cchBuffer) ||
!wm->bBufferLoaded)) {
/* stay in same buffer ? */
/* some memory mapped buffers are defined with -1 as a size */
/* condition to change buffer */
if ((wm->info.fccIOProc == FOURCC_MEM) ||
MMIO_Flush(wm, 0) != MMSYSERR_NOERROR ||
/* this also sets the wm->info.lDiskOffset field */
send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
(offset / wm->info.cchBuffer) * wm->info.cchBuffer,
SEEK_SET, MMIO_PROC_32A) == -1)
return -1;
MMIO_GrabNextBuffer(wm, TRUE);
}
wm->info.pchNext = wm->info.pchBuffer + (offset - wm->info.lBufOffset);
TRACE("=> %d\n", offset);
return offset;
}
/**************************************************************************
* mmioGetInfo [WINMM.@]
*/
MMRESULT WINAPI mmioGetInfo(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
{
LPWINE_MMIO wm;
TRACE("(%p,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
if ((wm = MMIO_Get(hmmio)) == NULL)
return MMSYSERR_INVALHANDLE;
*lpmmioinfo = wm->info;
/* don't expose 16 bit ioproc:s */
if (wm->ioProc->type != MMIO_PROC_16)
lpmmioinfo->pIOProc = wm->ioProc->pIOProc;
return MMSYSERR_NOERROR;
}
/**************************************************************************
* mmioSetInfo [WINMM.@]
*/
MMRESULT WINAPI mmioSetInfo(HMMIO hmmio, const MMIOINFO* lpmmioinfo, UINT uFlags)
{
LPWINE_MMIO wm;
TRACE("(%p,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
if ((wm = MMIO_Get(hmmio)) == NULL)
return MMSYSERR_INVALHANDLE;
/* check pointers coherence */
if (lpmmioinfo->pchNext < wm->info.pchBuffer ||
lpmmioinfo->pchNext > wm->info.pchBuffer + wm->info.cchBuffer ||
lpmmioinfo->pchEndRead < wm->info.pchBuffer ||
lpmmioinfo->pchEndRead > wm->info.pchBuffer + wm->info.cchBuffer ||
lpmmioinfo->pchEndWrite < wm->info.pchBuffer ||
lpmmioinfo->pchEndWrite > wm->info.pchBuffer + wm->info.cchBuffer)
return MMSYSERR_INVALPARAM;
wm->info.pchNext = lpmmioinfo->pchNext;
wm->info.pchEndRead = lpmmioinfo->pchEndRead;
return MMSYSERR_NOERROR;
}
/**************************************************************************
* mmioSetBuffer [WINMM.@]
*/
MMRESULT WINAPI mmioSetBuffer(HMMIO hmmio, LPSTR pchBuffer, LONG cchBuffer, UINT uFlags)
{
LPWINE_MMIO wm;
TRACE("(hmmio=%p, pchBuf=%p, cchBuf=%d, uFlags=%#08x)\n",
hmmio, pchBuffer, cchBuffer, uFlags);
if ((wm = MMIO_Get(hmmio)) == NULL)
return MMSYSERR_INVALHANDLE;
return MMIO_SetBuffer(wm, pchBuffer, cchBuffer, uFlags);
}
/**************************************************************************
* mmioFlush [WINMM.@]
*/
MMRESULT WINAPI mmioFlush(HMMIO hmmio, UINT uFlags)
{
LPWINE_MMIO wm;
TRACE("(%p, %04X)\n", hmmio, uFlags);
if ((wm = MMIO_Get(hmmio)) == NULL)
return MMSYSERR_INVALHANDLE;
return MMIO_Flush(wm, uFlags);
}
/**************************************************************************
* mmioAdvance [WINMM.@]
*/
MMRESULT WINAPI mmioAdvance(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
{
LPWINE_MMIO wm;
TRACE("hmmio=%p, lpmmioinfo=%p, uFlags=%04X\n", hmmio, lpmmioinfo, uFlags);
/* NOTE: mmioAdvance16 heavily relies on parameters from lpmmioinfo we're using
* here. be sure if you change something here to check mmioAdvance16 as well
*/
if ((wm = MMIO_Get(hmmio)) == NULL)
return MMSYSERR_INVALHANDLE;
if (!wm->info.cchBuffer)
return MMIOERR_UNBUFFERED;
if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
return MMSYSERR_INVALPARAM;
if (uFlags == MMIO_WRITE && (lpmmioinfo->dwFlags & MMIO_DIRTY))
{
send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
lpmmioinfo->lBufOffset, SEEK_SET, MMIO_PROC_32A);
send_message(wm->ioProc, &wm->info, MMIOM_WRITE,
(LPARAM)lpmmioinfo->pchBuffer,
lpmmioinfo->pchNext - lpmmioinfo->pchBuffer, MMIO_PROC_32A);
lpmmioinfo->dwFlags &= ~MMIO_DIRTY;
}
if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
return MMIOERR_CANNOTWRITE;
if (lpmmioinfo) {
wm->dwFileSize = max(wm->dwFileSize, lpmmioinfo->lBufOffset +
(lpmmioinfo->pchNext - lpmmioinfo->pchBuffer));
}
MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
if (lpmmioinfo) {
lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
lpmmioinfo->pchEndRead = lpmmioinfo->pchBuffer +
(wm->info.pchEndRead - wm->info.pchBuffer);
lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
(wm->info.pchEndWrite - wm->info.pchBuffer);
lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
lpmmioinfo->lBufOffset = wm->info.lBufOffset;
}
return MMSYSERR_NOERROR;
}
/**************************************************************************
* mmioStringToFOURCCA [WINMM.@]
*/
FOURCC WINAPI mmioStringToFOURCCA(LPCSTR sz, UINT uFlags)
{
CHAR cc[4];
int i = 0;
for (i = 0; i < 4 && sz[i]; i++) {
if (uFlags & MMIO_TOUPPER) {
cc[i] = toupper(sz[i]);
} else {
cc[i] = sz[i];
}
}
/* Pad with spaces */
while (i < 4) cc[i++] = ' ';
TRACE("Got '%.4s'\n",cc);
return mmioFOURCC(cc[0],cc[1],cc[2],cc[3]);
}
/**************************************************************************
* mmioStringToFOURCCW [WINMM.@]
*/
FOURCC WINAPI mmioStringToFOURCCW(LPCWSTR sz, UINT uFlags)
{
char szA[4];
WideCharToMultiByte( CP_ACP, 0, sz, 4, szA, sizeof(szA), NULL, NULL );
return mmioStringToFOURCCA(szA,uFlags);
}
/**************************************************************************
* mmioInstallIOProcA [WINMM.@]
*/
LPMMIOPROC WINAPI mmioInstallIOProcA(FOURCC fccIOProc,
LPMMIOPROC pIOProc, DWORD dwFlags)
{
return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32A);
}
/**************************************************************************
* mmioInstallIOProcW [WINMM.@]
*/
LPMMIOPROC WINAPI mmioInstallIOProcW(FOURCC fccIOProc,
LPMMIOPROC pIOProc, DWORD dwFlags)
{
return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32W);
}
/******************************************************************
* MMIO_SendMessage
*
*
*/
LRESULT MMIO_SendMessage(HMMIO hmmio, UINT uMessage, LPARAM lParam1,
LPARAM lParam2, enum mmioProcType type)
{
LPWINE_MMIO wm;
TRACE("(%p, %u, %ld, %ld, %d)\n", hmmio, uMessage, lParam1, lParam2, type);
if (uMessage < MMIOM_USER)
return MMSYSERR_INVALPARAM;
if ((wm = MMIO_Get(hmmio)) == NULL)
return MMSYSERR_INVALHANDLE;
return send_message(wm->ioProc, &wm->info, uMessage, lParam1, lParam2, type);
}
/**************************************************************************
* mmioSendMessage [WINMM.@]
*/
LRESULT WINAPI mmioSendMessage(HMMIO hmmio, UINT uMessage,
LPARAM lParam1, LPARAM lParam2)
{
return MMIO_SendMessage(hmmio, uMessage, lParam1, lParam2, MMIO_PROC_32A);
}
/**************************************************************************
* mmioDescend [WINMM.@]
*/
MMRESULT WINAPI mmioDescend(HMMIO hmmio, LPMMCKINFO lpck,
const MMCKINFO* lpckParent, UINT uFlags)
{
DWORD dwOldPos;
FOURCC srchCkId;
FOURCC srchType;
TRACE("(%p, %p, %p, %04X);\n", hmmio, lpck, lpckParent, uFlags);
if (lpck == NULL)
return MMSYSERR_INVALPARAM;
dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
TRACE("dwOldPos=%d\n", dwOldPos);
if (lpckParent != NULL) {
TRACE("seek inside parent at %d !\n", lpckParent->dwDataOffset);
/* EPP: was dwOldPos = mmioSeek(hmmio,lpckParent->dwDataOffset,SEEK_SET); */
if (dwOldPos < lpckParent->dwDataOffset ||
dwOldPos >= lpckParent->dwDataOffset + lpckParent->cksize) {
WARN("outside parent chunk\n");
return MMIOERR_CHUNKNOTFOUND;
}
}
/* The SDK docu says 'ckid' is used for all cases. Real World
* examples disagree -Marcus,990216.
*/
srchCkId = 0;
srchType = 0;
/* find_chunk looks for 'ckid' */
if (uFlags & MMIO_FINDCHUNK)
srchCkId = lpck->ckid;
/* find_riff and find_list look for 'fccType' */
if (uFlags & MMIO_FINDLIST)
{
srchCkId = FOURCC_LIST;
srchType = lpck->fccType;
}
if (uFlags & MMIO_FINDRIFF)
{
srchCkId = FOURCC_RIFF;
srchType = lpck->fccType;
}
TRACE("searching for %4.4s.%4.4s\n",
(LPCSTR)&srchCkId, srchType ? (LPCSTR)&srchType : "any");
while (TRUE)
{
LONG ix;
ix = mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD));
if (ix < 2*sizeof(DWORD))
{
mmioSeek(hmmio, dwOldPos, SEEK_SET);
WARN("return ChunkNotFound\n");
return MMIOERR_CHUNKNOTFOUND;
}
lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
TRACE("ckid=%4.4s fcc=%4.4s cksize=%08X !\n",
(LPCSTR)&lpck->ckid,
srchType ? (LPCSTR)&lpck->fccType:"<na>",
lpck->cksize);
if ( (!srchCkId || (srchCkId == lpck->ckid)) &&
(!srchType || (srchType == lpck->fccType)) )
break;
dwOldPos = lpck->dwDataOffset + ((lpck->cksize + 1) & ~1);
mmioSeek(hmmio, dwOldPos, SEEK_SET);
}
lpck->dwFlags = 0;
/* If we were looking for RIFF/LIST chunks, the final file position
* is after the chunkid. If we were just looking for the chunk
* it is after the cksize. So add 4 in RIFF/LIST case.
*/
if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
mmioSeek(hmmio, lpck->dwDataOffset + sizeof(DWORD), SEEK_SET);
else
{
mmioSeek(hmmio, lpck->dwDataOffset, SEEK_SET);
lpck->fccType = 0;
}
TRACE("lpck: ckid=%.4s, cksize=%d, dwDataOffset=%d fccType=%08X (%.4s)!\n",
(LPSTR)&lpck->ckid, lpck->cksize, lpck->dwDataOffset,
lpck->fccType, srchType?(LPSTR)&lpck->fccType:"");
return MMSYSERR_NOERROR;
}
/**************************************************************************
* mmioAscend [WINMM.@]
*/
MMRESULT WINAPI mmioAscend(HMMIO hmmio, LPMMCKINFO lpck, UINT uFlags)
{
TRACE("(%p, %p, %04X);\n", hmmio, lpck, uFlags);
if (lpck->dwFlags & MMIO_DIRTY) {
DWORD dwOldPos, dwNewSize;
TRACE("Chunk is dirty, checking if chunk's size is correct\n");
dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
TRACE("dwOldPos=%d lpck->dwDataOffset = %d\n", dwOldPos, lpck->dwDataOffset);
dwNewSize = dwOldPos - lpck->dwDataOffset;
if (dwNewSize != lpck->cksize) {
TRACE("Nope: lpck->cksize=%d dwNewSize=%d\n", lpck->cksize, dwNewSize);
lpck->cksize = dwNewSize;
/* pad odd size with 0 */
if (dwNewSize & 1) {
char ch = 0;
mmioWrite(hmmio, &ch, 1);
}
mmioSeek(hmmio, lpck->dwDataOffset - sizeof(DWORD), SEEK_SET);
mmioWrite(hmmio, (LPSTR)&dwNewSize, sizeof(DWORD));
}
lpck->dwFlags = 0;
}
mmioSeek(hmmio, lpck->dwDataOffset + ((lpck->cksize + 1) & ~1), SEEK_SET);
return MMSYSERR_NOERROR;
}
/**************************************************************************
* mmioCreateChunk [WINMM.@]
*/
MMRESULT WINAPI mmioCreateChunk(HMMIO hmmio, MMCKINFO* lpck, UINT uFlags)
{
DWORD dwOldPos;
LONG size;
LONG ix;
TRACE("(%p, %p, %04X);\n", hmmio, lpck, uFlags);
dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
TRACE("dwOldPos=%d\n", dwOldPos);
if (uFlags == MMIO_CREATELIST)
lpck->ckid = FOURCC_LIST;
else if (uFlags == MMIO_CREATERIFF)
lpck->ckid = FOURCC_RIFF;
TRACE("ckid=%.4s\n", (LPSTR)&lpck->ckid);
size = 2 * sizeof(DWORD);
lpck->dwDataOffset = dwOldPos + size;
if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
size += sizeof(DWORD);
lpck->dwFlags = MMIO_DIRTY;
ix = mmioWrite(hmmio, (LPSTR)lpck, size);
TRACE("after mmioWrite ix = %d req = %d, errno = %d\n", ix, size, errno);
if (ix < size) {
mmioSeek(hmmio, dwOldPos, SEEK_SET);
WARN("return CannotWrite\n");
return MMIOERR_CANNOTWRITE;
}
return MMSYSERR_NOERROR;
}
/**************************************************************************
* mmioRenameA [WINMM.@]
*/
MMRESULT WINAPI mmioRenameA(LPCSTR szFileName, LPCSTR szNewFileName,
const MMIOINFO* lpmmioinfo, DWORD dwFlags)
{
struct IOProcList* ioProc = NULL;
struct IOProcList tmp;
FOURCC fcc;
TRACE("('%s', '%s', %p, %08X);\n",
debugstr_a(szFileName), debugstr_a(szNewFileName), lpmmioinfo, dwFlags);
/* If both params are NULL, then parse the file name */
if (lpmmioinfo && lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
{
fcc = MMIO_ParseExtA(szFileName);
if (fcc) ioProc = MMIO_FindProcNode(fcc);
}
/* Handle any unhandled/error case from above. Assume DOS file */
if (!lpmmioinfo || (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL && ioProc == NULL))
ioProc = MMIO_FindProcNode(FOURCC_DOS);
/* if just the four character code is present, look up IO proc */
else if (lpmmioinfo->pIOProc == NULL)
ioProc = MMIO_FindProcNode(lpmmioinfo->fccIOProc);
else /* use relevant ioProc */
{
ioProc = &tmp;
tmp.fourCC = lpmmioinfo->fccIOProc;
tmp.pIOProc = lpmmioinfo->pIOProc;
tmp.type = MMIO_PROC_32A;
tmp.count = 1;
}
/* FIXME: should we actually pass lpmmioinfo down the drain ???
* or make a copy of it because it's const ???
*/
return send_message(ioProc, (MMIOINFO*)lpmmioinfo, MMIOM_RENAME,
(LPARAM)szFileName, (LPARAM)szNewFileName, MMIO_PROC_32A);
}
/**************************************************************************
* mmioRenameW [WINMM.@]
*/
MMRESULT WINAPI mmioRenameW(LPCWSTR szFileName, LPCWSTR szNewFileName,
const MMIOINFO* lpmmioinfo, DWORD dwFlags)
{
LPSTR szFn = NULL;
LPSTR sznFn = NULL;
UINT ret = MMSYSERR_NOMEM;
INT len;
if (szFileName)
{
len = WideCharToMultiByte( CP_ACP, 0, szFileName, -1, NULL, 0, NULL, NULL );
szFn = HeapAlloc( GetProcessHeap(), 0, len );
if (!szFn) goto done;
WideCharToMultiByte( CP_ACP, 0, szFileName, -1, szFn, len, NULL, NULL );
}
if (szNewFileName)
{
len = WideCharToMultiByte( CP_ACP, 0, szNewFileName, -1, NULL, 0, NULL, NULL );
sznFn = HeapAlloc( GetProcessHeap(), 0, len );
if (!sznFn) goto done;
WideCharToMultiByte( CP_ACP, 0, szNewFileName, -1, sznFn, len, NULL, NULL );
}
ret = mmioRenameA(szFn, sznFn, lpmmioinfo, dwFlags);
done:
HeapFree(GetProcessHeap(),0,szFn);
HeapFree(GetProcessHeap(),0,sznFn);
return ret;
}
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