git.oblomov.eu Git - wine/blob - dlls/sane.ds/ds_ctrl.c

   1 /*
   2  * Copyright 2000 Corel Corporation
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20
  21 #ifdef HAVE_UNISTD_H
  22 # include <unistd.h>
  23 #endif
  24 #include <stdlib.h>
  25 #include "twain.h"
  26 #include "sane_i.h"
  27 #include "wine/debug.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(twain);
  30
  31 /* DG_CONTROL/DAT_CAPABILITY/MSG_GET */
  32 TW_UINT16 SANE_CapabilityGet (pTW_IDENTITY pOrigin, TW_MEMREF pData)
  33 {
  34     TW_UINT16 twRC = TWRC_SUCCESS, twCC = TWCC_SUCCESS;
  35     pTW_CAPABILITY pCapability = (pTW_CAPABILITY) pData;
  36
  37     TRACE("DG_CONTROL/DAT_CAPABILITY/MSG_GET\n");
  38
  39     if (activeDS.currentState < 4 || activeDS.currentState > 7)
  40     {
  41         twRC = TWRC_FAILURE;
  42         activeDS.twCC = TWCC_SEQERROR;
  43     }
  44     else
  45     {
  46         twCC = SANE_SaneCapability (pCapability, MSG_GET);
  47         twRC = (twCC == TWCC_SUCCESS)?TWRC_SUCCESS:TWRC_FAILURE;
  48         activeDS.twCC = twCC;
  49     }
  50
  51     return twRC;
  52 }
  53
  54 /* DG_CONTROL/DAT_CAPABILITY/MSG_GETCURRENT */
  55 TW_UINT16 SANE_CapabilityGetCurrent (pTW_IDENTITY pOrigin, TW_MEMREF pData)
  56 {
  57     TW_UINT16 twRC = TWRC_SUCCESS, twCC = TWCC_SUCCESS;
  58     pTW_CAPABILITY pCapability = (pTW_CAPABILITY) pData;
  59
  60     TRACE("DG_CONTROL/DAT_CAPABILITY/MSG_GETCURRENT\n");
  61
  62     if (activeDS.currentState < 4 || activeDS.currentState > 7)
  63     {
  64         twRC = TWRC_FAILURE;
  65         activeDS.twCC = TWCC_SEQERROR;
  66     }
  67     else
  68     {
  69         twCC = SANE_SaneCapability (pCapability, MSG_GETCURRENT);
  70         twRC = (twCC == TWCC_SUCCESS)?TWRC_SUCCESS:TWRC_FAILURE;
  71         activeDS.twCC = twCC;
  72     }
  73
  74     return twRC;
  75 }
  76
  77 /* DG_CONTROL/DAT_CAPABILITY/MSG_GETDEFAULT */
  78 TW_UINT16 SANE_CapabilityGetDefault (pTW_IDENTITY pOrigin, TW_MEMREF pData)
  79 {
  80     TW_UINT16 twRC = TWRC_SUCCESS, twCC = TWCC_SUCCESS;
  81     pTW_CAPABILITY pCapability = (pTW_CAPABILITY) pData;
  82
  83     TRACE("DG_CONTROL/DAT_CAPABILITY/MSG_GETDEFAULT\n");
  84
  85     if (activeDS.currentState < 4 || activeDS.currentState > 7)
  86     {
  87         twRC = TWRC_FAILURE;
  88         activeDS.twCC = TWCC_SEQERROR;
  89     }
  90     else
  91     {
  92         twCC = SANE_SaneCapability (pCapability, MSG_GETDEFAULT);
  93         twRC = (twCC == TWCC_SUCCESS)?TWRC_SUCCESS:TWRC_FAILURE;
  94         activeDS.twCC = twCC;
  95     }
  96
  97     return twRC;
  98 }
  99
 100 /* DG_CONTROL/DAT_CAPABILITY/MSG_QUERYSUPPORT */
 101 TW_UINT16 SANE_CapabilityQuerySupport (pTW_IDENTITY pOrigin,
 102                                         TW_MEMREF pData)
 103 {
 104     FIXME ("stub!\n");
 105
 106     return TWRC_FAILURE;
 107 }
 108
 109 /* DG_CONTROL/DAT_CAPABILITY/MSG_RESET */
 110 TW_UINT16 SANE_CapabilityReset (pTW_IDENTITY pOrigin,
 111                                  TW_MEMREF pData)
 112 {
 113     TW_UINT16 twRC = TWRC_SUCCESS, twCC = TWCC_SUCCESS;
 114     pTW_CAPABILITY pCapability = (pTW_CAPABILITY) pData;
 115
 116     TRACE("DG_CONTROL/DAT_CAPABILITY/MSG_RESET\n");
 117
 118     if (activeDS.currentState < 4 || activeDS.currentState > 7)
 119     {
 120         twRC = TWRC_FAILURE;
 121         activeDS.twCC = TWCC_SEQERROR;
 122     }
 123     else
 124     {
 125         twCC = SANE_SaneCapability (pCapability, MSG_RESET);
 126         twRC = (twCC == TWCC_SUCCESS)?TWRC_SUCCESS:TWRC_FAILURE;
 127         activeDS.twCC = twCC;
 128     }
 129
 130     return twRC;
 131 }
 132
 133 /* DG_CONTROL/DAT_CAPABILITY/MSG_SET */
 134 TW_UINT16 SANE_CapabilitySet (pTW_IDENTITY pOrigin,
 135                                TW_MEMREF pData)
 136 {
 137     TW_UINT16 twRC = TWRC_SUCCESS, twCC = TWCC_SUCCESS;
 138     pTW_CAPABILITY pCapability = (pTW_CAPABILITY) pData;
 139
 140     TRACE ("DG_CONTROL/DAT_CAPABILITY/MSG_SET\n");
 141
 142     if (activeDS.currentState != 4)
 143     {
 144         twRC = TWRC_FAILURE;
 145         activeDS.twCC = TWCC_SEQERROR;
 146     }
 147     else
 148     {
 149         twCC = SANE_SaneCapability (pCapability, MSG_SET);
 150         twRC = (twCC == TWCC_SUCCESS)?TWRC_SUCCESS:TWRC_FAILURE;
 151         activeDS.twCC = twCC;
 152     }
 153     return twRC;
 154 }
 155
 156 /* DG_CONTROL/DAT_CUSTOMDSDATA/MSG_GET */
 157 TW_UINT16 SANE_CustomDSDataGet (pTW_IDENTITY pOrigin,
 158                                 TW_MEMREF pData)
 159 {
 160     FIXME ("stub!\n");
 161
 162     return TWRC_FAILURE;
 163 }
 164
 165 /* DG_CONTROL/DAT_CUSTOMDSDATA/MSG_SET */
 166 TW_UINT16 SANE_CustomDSDataSet (pTW_IDENTITY pOrigin,
 167                                  TW_MEMREF pData)
 168 {
 169     FIXME ("stub!\n");
 170
 171     return TWRC_FAILURE;
 172 }
 173
 174 /* DG_CONTROL/DAT_FILESYSTEM/MSG_AUTOMATICCAPTUREDIRECTORY */
 175 TW_UINT16 SANE_AutomaticCaptureDirectory (pTW_IDENTITY pOrigin,
 176
 177                                            TW_MEMREF pData)
 178 {
 179     FIXME ("stub!\n");
 180
 181     return TWRC_FAILURE;
 182 }
 183
 184 /* DG_CONTROL/DAT_FILESYSTEM/MSG_CHANGEDIRECTORY */
 185 TW_UINT16 SANE_ChangeDirectory (pTW_IDENTITY pOrigin,
 186                                  TW_MEMREF pData)
 187 {
 188     FIXME ("stub!\n");
 189
 190     return TWRC_FAILURE;
 191 }
 192
 193 /* DG_CONTROL/DAT_FILESYSTEM/MSG_COPY */
 194 TW_UINT16 SANE_FileSystemCopy (pTW_IDENTITY pOrigin,
 195                                 TW_MEMREF pData)
 196 {
 197     FIXME ("stub!\n");
 198
 199     return TWRC_FAILURE;
 200 }
 201
 202 /* DG_CONTROL/DAT_FILESYSTEM/MSG_CREATEDIRECTORY */
 203 TW_UINT16 SANE_CreateDirectory (pTW_IDENTITY pOrigin,
 204                                  TW_MEMREF pData)
 205 {
 206     FIXME ("stub!\n");
 207
 208     return TWRC_FAILURE;
 209 }
 210
 211 /* DG_CONTROL/DAT_FILESYSTEM/MSG_DELETE */
 212 TW_UINT16 SANE_FileSystemDelete (pTW_IDENTITY pOrigin,
 213                                   TW_MEMREF pData)
 214 {
 215     FIXME ("stub!\n");
 216
 217     return TWRC_FAILURE;
 218 }
 219
 220 /* DG_CONTROL/DAT_FILESYSTEM/MSG_FORMATMEDIA */
 221 TW_UINT16 SANE_FormatMedia (pTW_IDENTITY pOrigin,
 222                              TW_MEMREF pData)
 223 {
 224     FIXME ("stub!\n");
 225
 226     return TWRC_FAILURE;
 227 }
 228
 229 /* DG_CONTROL/DAT_FILESYSTEM/MSG_GETCLOSE */
 230 TW_UINT16 SANE_FileSystemGetClose (pTW_IDENTITY pOrigin,
 231                                     TW_MEMREF pData)
 232 {
 233     FIXME ("stub!\n");
 234
 235     return TWRC_FAILURE;
 236 }
 237
 238 /* DG_CONTROL/DAT_FILESYSTEM/MSG_GETFIRSTFILE */
 239 TW_UINT16 SANE_FileSystemGetFirstFile (pTW_IDENTITY pOrigin,
 240
 241                                         TW_MEMREF pData)
 242 {
 243     FIXME ("stub!\n");
 244
 245     return TWRC_FAILURE;
 246 }
 247
 248 /* DG_CONTROL/DAT_FILESYSTEM/MSG_GETINFO */
 249 TW_UINT16 SANE_FileSystemGetInfo (pTW_IDENTITY pOrigin,
 250                                    TW_MEMREF pData)
 251 {
 252     FIXME ("stub!\n");
 253
 254     return TWRC_FAILURE;
 255 }
 256
 257 /* DG_CONTROL/DAT_FILESYSTEM/MSG_GETNEXTFILE */
 258 TW_UINT16 SANE_FileSystemGetNextFile (pTW_IDENTITY pOrigin,
 259
 260                                        TW_MEMREF pData)
 261 {
 262     FIXME ("stub!\n");
 263
 264     return TWRC_FAILURE;
 265 }
 266
 267 /* DG_CONTROL/DAT_FILESYSTEM/MSG_RENAME */
 268 TW_UINT16 SANE_FileSystemRename (pTW_IDENTITY pOrigin,
 269                                   TW_MEMREF pData)
 270 {
 271     FIXME ("stub!\n");
 272
 273     return TWRC_FAILURE;
 274 }
 275
 276 /* DG_CONTROL/DAT_EVENT/MSG_PROCESSEVENT */
 277 TW_UINT16 SANE_ProcessEvent (pTW_IDENTITY pOrigin,
 278                               TW_MEMREF pData)
 279 {
 280     TW_UINT16 twRC = TWRC_SUCCESS;
 281     pTW_EVENT pEvent = (pTW_EVENT) pData;
 282
 283     TRACE("DG_CONTROL/DAT_EVENT/MSG_PROCESSEVENT\n");
 284
 285     if (activeDS.currentState < 5 || activeDS.currentState > 7)
 286     {
 287         twRC = TWRC_FAILURE;
 288         activeDS.twCC = TWCC_SEQERROR;
 289     }
 290     else
 291     {
 292         if (activeDS.pendingEvent.TWMessage != MSG_NULL)
 293         {
 294             pEvent->TWMessage = activeDS.pendingEvent.TWMessage;
 295             activeDS.pendingEvent.TWMessage = MSG_NULL;
 296             twRC = TWRC_NOTDSEVENT;
 297         }
 298         else
 299         {
 300             pEvent->TWMessage = MSG_NULL;  /* no message to the application */
 301             twRC = TWRC_NOTDSEVENT;
 302         }
 303         activeDS.twCC = TWCC_SUCCESS;
 304     }
 305
 306     return twRC;
 307 }
 308
 309 /* DG_CONTROL/DAT_PASSTHRU/MSG_PASSTHRU */
 310 TW_UINT16 SANE_PassThrough (pTW_IDENTITY pOrigin,
 311                              TW_MEMREF pData)
 312 {
 313     FIXME ("stub!\n");
 314
 315     return TWRC_FAILURE;
 316 }
 317
 318 /* DG_CONTROL/DAT_PENDINGXFERS/MSG_ENDXFER */
 319 TW_UINT16 SANE_PendingXfersEndXfer (pTW_IDENTITY pOrigin,
 320                                      TW_MEMREF pData)
 321 {
 322     TW_UINT16 twRC = TWRC_SUCCESS;
 323     pTW_PENDINGXFERS pPendingXfers = (pTW_PENDINGXFERS) pData;
 324
 325     TRACE("DG_CONTROL/DAT_PENDINGXFERS/MSG_ENDXFER\n");
 326
 327     if (activeDS.currentState != 6 && activeDS.currentState != 7)
 328     {
 329         twRC = TWRC_FAILURE;
 330         activeDS.twCC = TWCC_SEQERROR;
 331     }
 332     else
 333     {
 334         if (pPendingXfers->Count != 0)
 335         {
 336             pPendingXfers->Count --;
 337             activeDS.currentState = 6;
 338         }
 339         else
 340         {
 341             activeDS.currentState = 5;
 342             /* Notify the application that it can close the data source */
 343             activeDS.pendingEvent.TWMessage = MSG_CLOSEDSREQ;
 344         }
 345         twRC = TWRC_SUCCESS;
 346         activeDS.twCC = TWCC_SUCCESS;
 347     }
 348
 349     return twRC;
 350 }
 351
 352 /* DG_CONTROL/DAT_PENDINGXFERS/MSG_GET */
 353 TW_UINT16 SANE_PendingXfersGet (pTW_IDENTITY pOrigin,
 354                                  TW_MEMREF pData)
 355 {
 356     TW_UINT16 twRC = TWRC_SUCCESS;
 357     pTW_PENDINGXFERS pPendingXfers = (pTW_PENDINGXFERS) pData;
 358
 359     TRACE("DG_CONTROL/DAT_PENDINGXFERS/MSG_GET\n");
 360
 361     if (activeDS.currentState < 4 || activeDS.currentState > 7)
 362     {
 363         twRC = TWRC_FAILURE;
 364         activeDS.twCC = TWCC_SEQERROR;
 365     }
 366     else
 367     {
 368         /* FIXME: we shouldn't return 1 here */
 369         pPendingXfers->Count = 1;
 370         twRC = TWRC_SUCCESS;
 371         activeDS.twCC = TWCC_SUCCESS;
 372     }
 373
 374     return twRC;
 375 }
 376
 377 /* DG_CONTROL/DAT_PENDINGXFERS/MSG_RESET */
 378 TW_UINT16 SANE_PendingXfersReset (pTW_IDENTITY pOrigin,
 379                                    TW_MEMREF pData)
 380 {
 381     TW_UINT16 twRC = TWRC_SUCCESS;
 382     pTW_PENDINGXFERS pPendingXfers = (pTW_PENDINGXFERS) pData;
 383
 384     TRACE("DG_CONTROL/DAT_PENDINGXFERS/MSG_RESET\n");
 385
 386     if (activeDS.currentState != 6)
 387     {
 388         twRC = TWRC_FAILURE;
 389         activeDS.twCC = TWCC_SEQERROR;
 390     }
 391     else
 392     {
 393         pPendingXfers->Count = 0;
 394         activeDS.currentState = 5;
 395         twRC = TWRC_SUCCESS;
 396         activeDS.twCC = TWCC_SUCCESS;
 397     }
 398
 399     return twRC;
 400 }
 401
 402 /* DG_CONTROL/DAT_PENDINGXFERS/MSG_STOPFEEDER */
 403 TW_UINT16 SANE_PendingXfersStopFeeder (pTW_IDENTITY pOrigin,
 404                                         TW_MEMREF pData)
 405 {
 406     FIXME ("stub!\n");
 407
 408     return TWRC_FAILURE;
 409 }
 410
 411 /* DG_CONTROL/DAT_SETUPFILEXFER/MSG_GET */
 412 TW_UINT16 SANE_SetupFileXferGet (pTW_IDENTITY pOrigin,
 413                                   TW_MEMREF pData)
 414 {
 415     FIXME ("stub!\n");
 416
 417     return TWRC_FAILURE;
 418 }
 419
 420 /* DG_CONTROL/DAT_SETUPXFER/MSG_GETDEFAULT */
 421 TW_UINT16 SANE_SetupFileXferGetDefault (pTW_IDENTITY pOrigin,
 422                                          TW_MEMREF pData)
 423 {
 424     FIXME ("stub!\n");
 425
 426     return TWRC_FAILURE;
 427 }
 428
 429
 430 /* DG_CONTROL/DAT_SETUPFILEXFER/MSG_RESET */
 431 TW_UINT16 SANE_SetupFileXferReset (pTW_IDENTITY pOrigin,
 432                                     TW_MEMREF pData)
 433 {
 434     FIXME ("stub!\n");
 435
 436     return TWRC_FAILURE;
 437 }
 438
 439 /* DG_CONTROL/DAT_SETUPFILEXFER/MSG_SET */
 440 TW_UINT16 SANE_SetupFileXferSet (pTW_IDENTITY pOrigin,
 441                                   TW_MEMREF pData)
 442 {
 443     FIXME ("stub!\n");
 444
 445     return TWRC_FAILURE;
 446 }
 447
 448 /* DG_CONTROL/DAT_SETUPFILEXFER2/MSG_GET */
 449 TW_UINT16 SANE_SetupFileXfer2Get (pTW_IDENTITY pOrigin,
 450                                    TW_MEMREF pData)
 451 {
 452     FIXME ("stub!\n");
 453
 454     return TWRC_FAILURE;
 455 }
 456
 457 /* DG_CONTROL/DAT_SETUPFILEXFER2/MSG_GETDEFAULT */
 458 TW_UINT16 SANE_SetupFileXfer2GetDefault (pTW_IDENTITY pOrigin,
 459                                          TW_MEMREF pData)
 460 {
 461     FIXME ("stub!\n");
 462
 463     return TWRC_FAILURE;
 464 }
 465
 466 /* DG_CONTROL/DAT_SETUPFILEXFER2/MSG_RESET */
 467 TW_UINT16 SANE_SetupFileXfer2Reset (pTW_IDENTITY pOrigin,
 468                                   TW_MEMREF pData)
 469 {
 470     FIXME ("stub!\n");
 471
 472     return TWRC_FAILURE;
 473 }
 474
 475 /* DG_CONTROL/DAT_SETUPFILEXFER2/MSG_SET */
 476 TW_UINT16 SANE_SetupFileXfer2Set (pTW_IDENTITY pOrigin,
 477                                   TW_MEMREF pData)
 478 {
 479     FIXME ("stub!\n");
 480
 481     return TWRC_FAILURE;
 482 }
 483
 484 /* DG_CONTROL/DAT_SETUPMEMXFER/MSG_GET */
 485 TW_UINT16 SANE_SetupMemXferGet (pTW_IDENTITY pOrigin,
 486                                   TW_MEMREF pData)
 487 {
 488 #ifndef SONAME_LIBSANE
 489     return TWRC_FAILURE;
 490 #else
 491     pTW_SETUPMEMXFER  pSetupMemXfer = (pTW_SETUPMEMXFER)pData;
 492
 493     TRACE("DG_CONTROL/DAT_SETUPMEMXFER/MSG_GET\n");
 494     if (activeDS.sane_param_valid)
 495     {
 496         pSetupMemXfer->MinBufSize = activeDS.sane_param.bytes_per_line;
 497         pSetupMemXfer->MaxBufSize = activeDS.sane_param.bytes_per_line * 8;
 498         pSetupMemXfer->Preferred = activeDS.sane_param.bytes_per_line * 2;
 499     }
 500     else
 501     {
 502         /* Guessing */
 503         pSetupMemXfer->MinBufSize = 2000;
 504         pSetupMemXfer->MaxBufSize = 8000;
 505         pSetupMemXfer->Preferred = 4000;
 506     }
 507
 508     return TWRC_SUCCESS;
 509 #endif
 510 }
 511
 512 /* DG_CONTROL/DAT_STATUS/MSG_GET */
 513 TW_UINT16 SANE_GetDSStatus (pTW_IDENTITY pOrigin,
 514                              TW_MEMREF pData)
 515 {
 516     pTW_STATUS pSourceStatus = (pTW_STATUS) pData;
 517
 518     TRACE ("DG_CONTROL/DAT_STATUS/MSG_GET\n");
 519     pSourceStatus->ConditionCode = activeDS.twCC;
 520     /* Reset the condition code */
 521     activeDS.twCC = TWCC_SUCCESS;
 522     return TWRC_SUCCESS;
 523 }
 524
 525 /* DG_CONTROL/DAT_USERINTERFACE/MSG_DISABLEDS */
 526 TW_UINT16 SANE_DisableDSUserInterface (pTW_IDENTITY pOrigin,
 527                                         TW_MEMREF pData)
 528 {
 529     TW_UINT16 twRC = TWRC_SUCCESS;
 530
 531     TRACE ("DG_CONTROL/DAT_USERINTERFACE/MSG_DISABLEDS\n");
 532
 533     if (activeDS.currentState != 5)
 534     {
 535         twRC = TWRC_FAILURE;
 536         activeDS.twCC = TWCC_SEQERROR;
 537     }
 538     else
 539     {
 540         activeDS.currentState = 4;
 541         twRC = TWRC_SUCCESS;
 542         activeDS.twCC = TWCC_SUCCESS;
 543     }
 544
 545     return twRC;
 546 }
 547
 548 /* DG_CONTROL/DAT_USERINTERFACE/MSG_ENABLEDS */
 549 TW_UINT16 SANE_EnableDSUserInterface (pTW_IDENTITY pOrigin,
 550                                        TW_MEMREF pData)
 551 {
 552     TW_UINT16 twRC = TWRC_SUCCESS;
 553     pTW_USERINTERFACE pUserInterface = (pTW_USERINTERFACE) pData;
 554
 555     TRACE ("DG_CONTROL/DAT_USERINTERFACE/MSG_ENABLEDS\n");
 556
 557     if (activeDS.currentState != 4)
 558     {
 559         twRC = TWRC_FAILURE;
 560         activeDS.twCC = TWCC_SEQERROR;
 561         FIXME("sequence error %d\n", activeDS.currentState);
 562     }
 563     else
 564     {
 565         activeDS.hwndOwner = pUserInterface->hParent;
 566         if (pUserInterface->ShowUI)
 567         {
 568             BOOL rc;
 569             activeDS.currentState = 5; /* Transitions to state 5 */
 570                 FIXME("showing UI\n");
 571             rc = DoScannerUI();
 572             if (!rc)
 573             {
 574                 activeDS.pendingEvent.TWMessage = MSG_CLOSEDSREQ;
 575             }
 576 #ifdef SONAME_LIBSANE
 577             else
 578             {
 579                 psane_get_parameters (activeDS.deviceHandle, &activeDS.sane_param);
 580                 activeDS.sane_param_valid = TRUE;
 581             }
 582 #endif
 583         }
 584         else
 585         {
 586             /* no UI will be displayed, so source is ready to transfer data */
 587             activeDS.pendingEvent.TWMessage = MSG_XFERREADY;
 588             activeDS.currentState = 6; /* Transitions to state 6 directly */
 589         }
 590
 591         activeDS.hwndOwner = pUserInterface->hParent;
 592         twRC = TWRC_SUCCESS;
 593         activeDS.twCC = TWCC_SUCCESS;
 594     }
 595
 596     return twRC;
 597 }
 598
 599 /* DG_CONTROL/DAT_USERINTERFACE/MSG_ENABLEDSUIONLY */
 600 TW_UINT16 SANE_EnableDSUIOnly (pTW_IDENTITY pOrigin,
 601                                 TW_MEMREF pData)
 602 {
 603     TW_UINT16 twRC = TWRC_SUCCESS;
 604
 605     TRACE("DG_CONTROL/DAT_USERINTERFACE/MSG_ENABLEDSUIONLY\n");
 606
 607     if (activeDS.currentState != 4)
 608     {
 609         twRC = TWRC_FAILURE;
 610         activeDS.twCC = TWCC_SEQERROR;
 611     }
 612     else
 613     {
 614         /* FIXME: we should replace xscanimage with our own UI */
 615         system ("xscanimage");
 616         activeDS.currentState = 5;
 617         twRC = TWRC_SUCCESS;
 618         activeDS.twCC = TWCC_SUCCESS;
 619     }
 620
 621     return twRC;
 622 }
 623
 624 /* DG_CONTROL/DAT_XFERGROUP/MSG_GET */
 625 TW_UINT16 SANE_XferGroupGet (pTW_IDENTITY pOrigin,
 626                               TW_MEMREF pData)
 627 {
 628     FIXME ("stub!\n");
 629
 630     return TWRC_FAILURE;
 631 }
 632
 633 /* DG_CONTROL/DAT_XFERGROUP/MSG_SET */
 634 TW_UINT16 SANE_XferGroupSet (pTW_IDENTITY pOrigin,
 635                                   TW_MEMREF pData)
 636 {
 637     FIXME ("stub!\n");
 638
 639     return TWRC_FAILURE;
 640 }