Sweden-Number/dlls/twain_32/twain32_main.c

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/*
* TWAIN32 functions
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*
* Copyright 2000 Shi Quan He <shiquan@cyberdude.com>
* Copyright 2006 Marcus Meissner
*
* 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
*/
#include "config.h"
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "twain.h"
#include "twain_i.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(twain);
/* A helper function that looks up a destination identity in the active
source list */
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static activeDS *TWAIN_LookupSource (const TW_IDENTITY *pDest)
{
activeDS *pSource;
for (pSource = activeSources; pSource; pSource = pSource->next)
if (pSource->identity.Id == pDest->Id)
break;
return pSource;
}
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static TW_UINT16 TWAIN_SourceManagerHandler (
pTW_IDENTITY pOrigin,
TW_UINT16 DAT,
TW_UINT16 MSG,
TW_MEMREF pData)
{
TW_UINT16 twRC = TWRC_SUCCESS;
switch (DAT)
{
case DAT_IDENTITY:
switch (MSG)
{
case MSG_CLOSEDS:
twRC = TWAIN_CloseDS (pOrigin, pData);
break;
case MSG_GETDEFAULT:
twRC = TWAIN_IdentityGetDefault (pOrigin, pData);
break;
case MSG_GETFIRST:
twRC = TWAIN_IdentityGetFirst (pOrigin, pData);
break;
case MSG_GETNEXT:
twRC = TWAIN_IdentityGetNext (pOrigin, pData);
break;
case MSG_OPENDS:
twRC = TWAIN_OpenDS (pOrigin, pData);
break;
case MSG_USERSELECT:
twRC = TWAIN_UserSelect (pOrigin, pData);
break;
default:
/* Unrecognized operation triplet */
twRC = TWRC_FAILURE;
DSM_twCC = TWCC_BADPROTOCOL;
WARN("unrecognized operation triplet\n");
break;
}
break;
case DAT_PARENT:
switch (MSG)
{
case MSG_CLOSEDSM:
twRC = TWAIN_CloseDSM (pOrigin, pData);
break;
case MSG_OPENDSM:
twRC = TWAIN_OpenDSM (pOrigin, pData);
break;
default:
/* Unrecognized operation triplet */
twRC = TWRC_FAILURE;
DSM_twCC = TWCC_BADPROTOCOL;
WARN("unrecognized operation triplet\n");
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}
break;
case DAT_STATUS:
if (MSG == MSG_GET) {
twRC = TWAIN_GetDSMStatus (pOrigin, pData);
} else {
twRC = TWRC_FAILURE;
DSM_twCC = TWCC_BADPROTOCOL;
WARN("unrecognized operation triplet\n");
}
break;
default:
twRC = TWRC_FAILURE;
DSM_twCC = TWCC_BADPROTOCOL;
WARN("unrecognized operation triplet\n");
break;
}
return twRC;
}
/* Main entry point for the TWAIN library */
TW_UINT16 WINAPI
DSM_Entry (pTW_IDENTITY pOrigin,
pTW_IDENTITY pDest,
TW_UINT32 DG,
TW_UINT16 DAT,
TW_UINT16 MSG,
TW_MEMREF pData)
{
TW_UINT16 twRC = TWRC_SUCCESS; /* Return Code */
TRACE("(DG=%d DAT=%d MSG=%d)\n", DG, DAT, MSG);
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if (pDest)
{
activeDS *pSource = TWAIN_LookupSource (pDest);
/* This operation's destination is a source */
if (!pSource) {
ERR("No source associated with pDest %p\n", pDest);
DSM_twCC = TWCC_BADDEST;
return TWRC_FAILURE;
}
DSM_twCC = TWCC_SUCCESS;
TRACE("Forwarding %d/%d/%d/%p to DS.\n", DG, DAT, MSG, pData);
twRC = pSource->dsEntry(pOrigin, DG, DAT, MSG, pData);
TRACE("return value is %d\n", twRC);
return twRC;
}
switch (DG)
{
case DG_CONTROL:
twRC = TWAIN_SourceManagerHandler (pOrigin, DAT, MSG, pData);
break;
default:
FIXME("The DSM does not handle DG %d\n", DG);
DSM_twCC = TWCC_BADPROTOCOL;
twRC = TWRC_FAILURE;
}
return twRC;
}