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![Amine Khaldi](/assets/img/avatar_default.png)
* Create a branch for some evul shell experiments. svn path=/branches/shell-experiments/; revision=61927
163 lines
4.7 KiB
C
163 lines
4.7 KiB
C
/*
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* TWAIN32 functions
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*
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* Copyright 2000 Shi Quan He <shiquan@cyberdude.com>
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* Copyright 2006 Marcus Meissner
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "twain_i.h"
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/* A helper function that looks up a destination identity in the active
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source list */
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static activeDS *TWAIN_LookupSource (const TW_IDENTITY *pDest)
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{
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activeDS *pSource;
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for (pSource = activeSources; pSource; pSource = pSource->next)
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if (pSource->identity.Id == pDest->Id)
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break;
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return pSource;
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}
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static TW_UINT16 TWAIN_SourceManagerHandler (
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pTW_IDENTITY pOrigin,
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TW_UINT16 DAT,
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TW_UINT16 MSG,
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TW_MEMREF pData)
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{
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TW_UINT16 twRC = TWRC_SUCCESS;
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switch (DAT)
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{
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case DAT_IDENTITY:
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switch (MSG)
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{
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case MSG_CLOSEDS:
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twRC = TWAIN_CloseDS (pOrigin, pData);
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break;
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case MSG_GETDEFAULT:
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twRC = TWAIN_IdentityGetDefault (pOrigin, pData);
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break;
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case MSG_GETFIRST:
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twRC = TWAIN_IdentityGetFirst (pOrigin, pData);
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break;
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case MSG_GETNEXT:
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twRC = TWAIN_IdentityGetNext (pOrigin, pData);
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break;
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case MSG_OPENDS:
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twRC = TWAIN_OpenDS (pOrigin, pData);
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break;
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case MSG_USERSELECT:
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twRC = TWAIN_UserSelect (pOrigin, pData);
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break;
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default:
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/* Unrecognized operation triplet */
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twRC = TWRC_FAILURE;
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DSM_twCC = TWCC_BADPROTOCOL;
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WARN("unrecognized operation triplet\n");
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break;
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}
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break;
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case DAT_PARENT:
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switch (MSG)
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{
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case MSG_CLOSEDSM:
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twRC = TWAIN_CloseDSM (pOrigin, pData);
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break;
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case MSG_OPENDSM:
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twRC = TWAIN_OpenDSM (pOrigin, pData);
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break;
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default:
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/* Unrecognized operation triplet */
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twRC = TWRC_FAILURE;
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DSM_twCC = TWCC_BADPROTOCOL;
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WARN("unrecognized operation triplet\n");
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}
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break;
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case DAT_STATUS:
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if (MSG == MSG_GET) {
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twRC = TWAIN_GetDSMStatus (pOrigin, pData);
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} else {
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twRC = TWRC_FAILURE;
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DSM_twCC = TWCC_BADPROTOCOL;
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WARN("unrecognized operation triplet\n");
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}
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break;
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default:
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twRC = TWRC_FAILURE;
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DSM_twCC = TWCC_BADPROTOCOL;
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WARN("unrecognized operation triplet\n");
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break;
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}
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return twRC;
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}
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/* Main entry point for the TWAIN library */
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TW_UINT16 WINAPI
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DSM_Entry (pTW_IDENTITY pOrigin,
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pTW_IDENTITY pDest,
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TW_UINT32 DG,
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TW_UINT16 DAT,
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TW_UINT16 MSG,
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TW_MEMREF pData)
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{
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TW_UINT16 twRC = TWRC_SUCCESS; /* Return Code */
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TRACE("(DG=%d DAT=%d MSG=%d)\n", DG, DAT, MSG);
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if (pDest)
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{
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activeDS *pSource = TWAIN_LookupSource (pDest);
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/* This operation's destination is a source */
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if (!pSource) {
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ERR("No source associated with pDest %p\n", pDest);
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DSM_twCC = TWCC_BADDEST;
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return TWRC_FAILURE;
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}
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DSM_twCC = TWCC_SUCCESS;
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TRACE("Forwarding %d/%d/%d/%p to DS.\n", DG, DAT, MSG, pData);
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twRC = pSource->dsEntry(pOrigin, DG, DAT, MSG, pData);
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TRACE("return value is %d\n", twRC);
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return twRC;
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}
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switch (DG)
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{
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case DG_CONTROL:
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twRC = TWAIN_SourceManagerHandler (pOrigin, DAT, MSG, pData);
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break;
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default:
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FIXME("The DSM does not handle DG %d\n", DG);
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DSM_twCC = TWCC_BADPROTOCOL;
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twRC = TWRC_FAILURE;
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}
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return twRC;
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}
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