dlls/msacm32/driver.c

   1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
   2
   3 /*
   4  *      MSACM32 library
   5  *
   6  *      Copyright 1998  Patrik Stridvall
   7  *                1999  Eric Pouech
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #include "config.h"
  25 #include "wine/port.h"
  26
  27 #include <stdarg.h>
  28 #include <stdio.h>
  29
  30 #include "windef.h"
  31 #include "winbase.h"
  32 #include "wingdi.h"
  33 #include "winuser.h"
  34 #include "winnls.h"
  35 #include "mmsystem.h"
  36 #include "mmreg.h"
  37 #include "msacm.h"
  38 #include "msacmdrv.h"
  39 #include "wineacm.h"
  40 #include "wine/debug.h"
  41 #include "wine/unicode.h"
  42
  43 WINE_DEFAULT_DEBUG_CHANNEL(msacm);
  44
  45 /***********************************************************************
  46  *           acmDriverAddA (MSACM32.@)
  47  */
  48 MMRESULT WINAPI acmDriverAddA(PHACMDRIVERID phadid, HINSTANCE hinstModule,
  49                               LPARAM lParam, DWORD dwPriority, DWORD fdwAdd)
  50 {
  51     MMRESULT resultW;
  52     WCHAR * driverW = NULL;
  53     LPARAM lParamW = lParam;
  54
  55     TRACE("(%p, %p, %08lx, %08x, %08x)\n",
  56           phadid, hinstModule, lParam, dwPriority, fdwAdd);
  57
  58     if (!phadid) {
  59         WARN("invalid parameter\n");
  60         return MMSYSERR_INVALPARAM;
  61     }
  62
  63     /* Check if any unknown flags */
  64     if (fdwAdd &
  65         ~(ACM_DRIVERADDF_FUNCTION|ACM_DRIVERADDF_NOTIFYHWND|
  66           ACM_DRIVERADDF_GLOBAL)) {
  67         WARN("invalid flag\n");
  68         return MMSYSERR_INVALFLAG;
  69     }
  70
  71     /* Check if any incompatible flags */
  72     if ((fdwAdd & ACM_DRIVERADDF_FUNCTION) &&
  73         (fdwAdd & ACM_DRIVERADDF_NOTIFYHWND)) {
  74         WARN("invalid flag\n");
  75         return MMSYSERR_INVALFLAG;
  76     }
  77
  78     /* A->W translation of name */
  79     if ((fdwAdd & ACM_DRIVERADDF_TYPEMASK) == ACM_DRIVERADDF_NAME) {
  80         INT len;
  81
  82         if (lParam == 0) return MMSYSERR_INVALPARAM;
  83         len = MultiByteToWideChar(CP_ACP, 0, (LPSTR)lParam, -1, NULL, 0);
  84         driverW = HeapAlloc(MSACM_hHeap, 0, len * sizeof(WCHAR));
  85         if (!driverW) return MMSYSERR_NOMEM;
  86         MultiByteToWideChar(CP_ACP, 0, (LPSTR)lParam, -1, driverW, len);
  87         lParamW = (LPARAM)driverW;
  88     }
  89
  90     resultW = acmDriverAddW(phadid, hinstModule, lParamW, dwPriority, fdwAdd);
  91     HeapFree(MSACM_hHeap, 0, driverW);
  92     return resultW;
  93 }
  94
  95 /***********************************************************************
  96  *           acmDriverAddW (MSACM32.@)
  97  *
  98  */
  99 MMRESULT WINAPI acmDriverAddW(PHACMDRIVERID phadid, HINSTANCE hinstModule,
 100                               LPARAM lParam, DWORD dwPriority, DWORD fdwAdd)
 101 {
 102     PWINE_ACMLOCALDRIVER pLocalDrv = NULL;
 103
 104     TRACE("(%p, %p, %08lx, %08x, %08x)\n",
 105           phadid, hinstModule, lParam, dwPriority, fdwAdd);
 106
 107     if (!phadid) {
 108         WARN("invalid parameter\n");
 109         return MMSYSERR_INVALPARAM;
 110     }
 111
 112     /* Check if any unknown flags */
 113     if (fdwAdd &
 114         ~(ACM_DRIVERADDF_FUNCTION|ACM_DRIVERADDF_NOTIFYHWND|
 115           ACM_DRIVERADDF_GLOBAL)) {
 116         WARN("invalid flag\n");
 117         return MMSYSERR_INVALFLAG;
 118     }
 119
 120     /* Check if any incompatible flags */
 121     if ((fdwAdd & ACM_DRIVERADDF_FUNCTION) &&
 122         (fdwAdd & ACM_DRIVERADDF_NOTIFYHWND)) {
 123         WARN("invalid flag\n");
 124         return MMSYSERR_INVALFLAG;
 125     }
 126
 127     switch (fdwAdd & ACM_DRIVERADDF_TYPEMASK) {
 128     case ACM_DRIVERADDF_NAME:
 129         /*
 130                 hInstModule     (unused)
 131                 lParam          name of value in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32
 132                 dwPriority      (unused, set to 0)
 133          */
 134         *phadid = (HACMDRIVERID) MSACM_RegisterDriverFromRegistry((LPCWSTR)lParam);
 135         if (!*phadid) {
 136             ERR("Unable to register driver via ACM_DRIVERADDF_NAME\n");
 137             return MMSYSERR_INVALPARAM;
 138         }
 139         break;
 140     case ACM_DRIVERADDF_FUNCTION:
 141         /*
 142                 hInstModule     Handle of module which contains driver entry proc
 143                 lParam          Driver function address
 144                 dwPriority      (unused, set to 0)
 145          */
 146         fdwAdd &= ~ACM_DRIVERADDF_TYPEMASK;
 147         /* FIXME: fdwAdd ignored */
 148         /* Application-supplied acmDriverProc's are placed at the top of the priority unless
 149            fdwAdd indicates ACM_DRIVERADDF_GLOBAL
 150          */
 151         pLocalDrv = MSACM_RegisterLocalDriver(hinstModule, (DRIVERPROC)lParam);
 152         *phadid = pLocalDrv ? (HACMDRIVERID) MSACM_RegisterDriver(NULL, NULL, pLocalDrv) : NULL;
 153         if (!*phadid) {
 154             ERR("Unable to register driver via ACM_DRIVERADDF_FUNCTION\n");
 155             return MMSYSERR_INVALPARAM;
 156         }
 157         break;
 158     case ACM_DRIVERADDF_NOTIFYHWND:
 159         /*
 160                 hInstModule     (unused)
 161                 lParam          Handle of notification window
 162                 dwPriority      Window message to send for notification broadcasts
 163          */
 164         *phadid = (HACMDRIVERID) MSACM_RegisterNotificationWindow((HWND)lParam, dwPriority);
 165         if (!*phadid) {
 166             ERR("Unable to register driver via ACM_DRIVERADDF_NOTIFYHWND\n");
 167             return MMSYSERR_INVALPARAM;
 168         }
 169         break;
 170     default:
 171         ERR("invalid flag value 0x%08lx for fdwAdd\n", fdwAdd & ACM_DRIVERADDF_TYPEMASK);
 172         return MMSYSERR_INVALFLAG;
 173     }
 174
 175     MSACM_BroadcastNotification();
 176     return MMSYSERR_NOERROR;
 177 }
 178
 179 /***********************************************************************
 180  *           acmDriverClose (MSACM32.@)
 181  */
 182 MMRESULT WINAPI acmDriverClose(HACMDRIVER had, DWORD fdwClose)
 183 {
 184     PWINE_ACMDRIVER     pad;
 185     PWINE_ACMDRIVERID   padid;
 186     PWINE_ACMDRIVER*    tpad;
 187
 188     TRACE("(%p, %08x)\n", had, fdwClose);
 189
 190     if (fdwClose) {
 191         WARN("invalid flag\n");
 192         return MMSYSERR_INVALFLAG;
 193     }
 194
 195     pad = MSACM_GetDriver(had);
 196     if (!pad) {
 197         WARN("invalid handle\n");
 198         return MMSYSERR_INVALHANDLE;
 199     }
 200
 201     padid = pad->obj.pACMDriverID;
 202
 203     /* remove driver from list */
 204     for (tpad = &(padid->pACMDriverList); *tpad; tpad = &((*tpad)->pNextACMDriver)) {
 205         if (*tpad == pad) {
 206             *tpad = (*tpad)->pNextACMDriver;
 207             break;
 208         }
 209     }
 210
 211     /* close driver if it has been opened */
 212     if (pad->hDrvr && !pad->pLocalDrvrInst)
 213         CloseDriver(pad->hDrvr, 0, 0);
 214     else if (pad->pLocalDrvrInst)
 215         MSACM_CloseLocalDriver(pad->pLocalDrvrInst);
 216
 217     pad->obj.dwType = 0;
 218     HeapFree(MSACM_hHeap, 0, pad);
 219
 220     return MMSYSERR_NOERROR;
 221 }
 222
 223 /***********************************************************************
 224  *           acmDriverDetailsA (MSACM32.@)
 225  */
 226 MMRESULT WINAPI acmDriverDetailsA(HACMDRIVERID hadid, PACMDRIVERDETAILSA padd, DWORD fdwDetails)
 227 {
 228     MMRESULT mmr;
 229     ACMDRIVERDETAILSW   addw;
 230
 231     TRACE("(%p, %p, %08x)\n", hadid, padd, fdwDetails);
 232
 233     if (!padd) {
 234         WARN("invalid parameter\n");
 235         return MMSYSERR_INVALPARAM;
 236     }
 237
 238     if (padd->cbStruct < 4) {
 239         WARN("invalid parameter\n");
 240         return MMSYSERR_INVALPARAM;
 241     }
 242
 243     addw.cbStruct = sizeof(addw);
 244     mmr = acmDriverDetailsW(hadid, &addw, fdwDetails);
 245     if (mmr == 0) {
 246         ACMDRIVERDETAILSA padda;
 247
 248         padda.fccType = addw.fccType;
 249         padda.fccComp = addw.fccComp;
 250         padda.wMid = addw.wMid;
 251         padda.wPid = addw.wPid;
 252         padda.vdwACM = addw.vdwACM;
 253         padda.vdwDriver = addw.vdwDriver;
 254         padda.fdwSupport = addw.fdwSupport;
 255         padda.cFormatTags = addw.cFormatTags;
 256         padda.cFilterTags = addw.cFilterTags;
 257         padda.hicon = addw.hicon;
 258         WideCharToMultiByte( CP_ACP, 0, addw.szShortName, -1, padda.szShortName,
 259                              sizeof(padda.szShortName), NULL, NULL );
 260         WideCharToMultiByte( CP_ACP, 0, addw.szLongName, -1, padda.szLongName,
 261                              sizeof(padda.szLongName), NULL, NULL );
 262         WideCharToMultiByte( CP_ACP, 0, addw.szCopyright, -1, padda.szCopyright,
 263                              sizeof(padda.szCopyright), NULL, NULL );
 264         WideCharToMultiByte( CP_ACP, 0, addw.szLicensing, -1, padda.szLicensing,
 265                              sizeof(padda.szLicensing), NULL, NULL );
 266         WideCharToMultiByte( CP_ACP, 0, addw.szFeatures, -1, padda.szFeatures,
 267                              sizeof(padda.szFeatures), NULL, NULL );
 268         padda.cbStruct = min(padd->cbStruct, sizeof(*padd));
 269         memcpy(padd, &padda, padda.cbStruct);
 270     }
 271     return mmr;
 272 }
 273
 274 /***********************************************************************
 275  *           acmDriverDetailsW (MSACM32.@)
 276  */
 277 MMRESULT WINAPI acmDriverDetailsW(HACMDRIVERID hadid, PACMDRIVERDETAILSW padd, DWORD fdwDetails)
 278 {
 279     HACMDRIVER acmDrvr;
 280     MMRESULT mmr;
 281
 282     TRACE("(%p, %p, %08x)\n", hadid, padd, fdwDetails);
 283
 284     if (!padd) {
 285         WARN("invalid parameter\n");
 286         return MMSYSERR_INVALPARAM;
 287     }
 288
 289     if (padd->cbStruct < 4) {
 290         WARN("invalid parameter\n");
 291         return MMSYSERR_INVALPARAM;
 292     }
 293
 294     if (fdwDetails) {
 295         WARN("invalid flag\n");
 296         return MMSYSERR_INVALFLAG;
 297     }
 298
 299     mmr = acmDriverOpen(&acmDrvr, hadid, 0);
 300     if (mmr == MMSYSERR_NOERROR) {
 301         ACMDRIVERDETAILSW paddw;
 302         paddw.cbStruct = sizeof(paddw);
 303         mmr = MSACM_Message(acmDrvr, ACMDM_DRIVER_DETAILS, (LPARAM)&paddw,  0);
 304
 305         acmDriverClose(acmDrvr, 0);
 306         paddw.cbStruct = min(padd->cbStruct, sizeof(*padd));
 307         memcpy(padd, &paddw, paddw.cbStruct);
 308     }
 309     else if (mmr == MMSYSERR_NODRIVER)
 310         return MMSYSERR_NOTSUPPORTED;
 311
 312     return mmr;
 313 }
 314
 315 /***********************************************************************
 316  *           acmDriverEnum (MSACM32.@)
 317  */
 318 MMRESULT WINAPI acmDriverEnum(ACMDRIVERENUMCB fnCallback, DWORD_PTR dwInstance,
 319                               DWORD fdwEnum)
 320 {
 321     PWINE_ACMDRIVERID   padid;
 322     DWORD               fdwSupport;
 323
 324     TRACE("(%p, %08lx, %08x)\n", fnCallback, dwInstance, fdwEnum);
 325
 326     if (!fnCallback) {
 327         WARN("invalid parameter\n");
 328         return MMSYSERR_INVALPARAM;
 329     }
 330
 331     if (fdwEnum & ~(ACM_DRIVERENUMF_NOLOCAL|ACM_DRIVERENUMF_DISABLED)) {
 332         WARN("invalid flag\n");
 333         return MMSYSERR_INVALFLAG;
 334     }
 335
 336     for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
 337         fdwSupport = padid->fdwSupport;
 338
 339         if (padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) {
 340             if (fdwEnum & ACM_DRIVERENUMF_DISABLED)
 341                 fdwSupport |= ACMDRIVERDETAILS_SUPPORTF_DISABLED;
 342             else
 343                 continue;
 344         }
 345         if (!(*fnCallback)((HACMDRIVERID)padid, dwInstance, fdwSupport))
 346             break;
 347     }
 348
 349     return MMSYSERR_NOERROR;
 350 }
 351
 352 /***********************************************************************
 353  *           acmDriverID (MSACM32.@)
 354  */
 355 MMRESULT WINAPI acmDriverID(HACMOBJ hao, PHACMDRIVERID phadid, DWORD fdwDriverID)
 356 {
 357     PWINE_ACMOBJ pao;
 358
 359     TRACE("(%p, %p, %08x)\n", hao, phadid, fdwDriverID);
 360
 361     if (fdwDriverID) {
 362         WARN("invalid flag\n");
 363         return MMSYSERR_INVALFLAG;
 364     }
 365
 366     pao = MSACM_GetObj(hao, WINE_ACMOBJ_DONTCARE);
 367     if (!pao) {
 368         WARN("invalid handle\n");
 369         return MMSYSERR_INVALHANDLE;
 370     }
 371
 372     if (!phadid) {
 373         WARN("invalid parameter\n");
 374         return MMSYSERR_INVALPARAM;
 375     }
 376
 377     *phadid = (HACMDRIVERID) pao->pACMDriverID;
 378
 379     return MMSYSERR_NOERROR;
 380 }
 381
 382 /***********************************************************************
 383  *           acmDriverMessage (MSACM32.@)
 384  *
 385  * Note: MSDN documentation (July 2001) is incomplete. This function
 386  * accepts sending messages to an HACMDRIVERID in addition to the
 387  * documented HACMDRIVER. In fact, for DRV_QUERYCONFIGURE and DRV_CONFIGURE,
 388  * this might actually be the required mode of operation.
 389  *
 390  * Note: For DRV_CONFIGURE, msacm supplies its own DRVCONFIGINFO structure
 391  * when the application fails to supply one. Some native drivers depend on
 392  * this and refuse to display unless a valid DRVCONFIGINFO structure is
 393  * built and supplied.
 394  */
 395 LRESULT WINAPI acmDriverMessage(HACMDRIVER had, UINT uMsg, LPARAM lParam1, LPARAM lParam2)
 396 {
 397     TRACE("(%p, %04x, %08lx, %08lx\n", had, uMsg, lParam1, lParam2);
 398
 399     if ((uMsg >= ACMDM_USER && uMsg < ACMDM_RESERVED_LOW) ||
 400         uMsg == ACMDM_DRIVER_ABOUT ||
 401         uMsg == DRV_QUERYCONFIGURE ||
 402         uMsg == DRV_CONFIGURE)
 403     {
 404         PWINE_ACMDRIVERID padid;
 405         LRESULT lResult;
 406         LPDRVCONFIGINFO pConfigInfo = NULL;
 407         LPWSTR section_name = NULL;
 408         LPWSTR alias_name = NULL;
 409
 410         /* Check whether handle is an HACMDRIVERID */
 411         padid  = MSACM_GetDriverID((HACMDRIVERID)had);
 412
 413         /* If the message is DRV_CONFIGURE, and the application provides no
 414            DRVCONFIGINFO structure, msacm must supply its own.
 415          */
 416         if (uMsg == DRV_CONFIGURE && lParam2 == 0) {
 417             LPWSTR pAlias;
 418
 419             /* Get the alias from the HACMDRIVERID */
 420             if (padid) {
 421                 pAlias = padid->pszDriverAlias;
 422                 if (pAlias == NULL) {
 423                     WARN("DRV_CONFIGURE: no alias for this driver, cannot self-supply alias\n");
 424                 }
 425             } else {
 426                 FIXME("DRV_CONFIGURE: reverse lookup HACMDRIVER -> HACMDRIVERID not implemented\n");
 427                 pAlias = NULL;
 428             }
 429
 430             if (pAlias != NULL) {
 431                 /* DRVCONFIGINFO is only 12 bytes long, but native msacm
 432                  * reports a 16-byte structure to codecs, so allocate 16 bytes,
 433                  * just to be on the safe side.
 434                  */
 435                 const unsigned int iStructSize = 16;
 436                 pConfigInfo = HeapAlloc(MSACM_hHeap, 0, iStructSize);
 437                 if (!pConfigInfo) {
 438                     ERR("OOM while supplying DRVCONFIGINFO for DRV_CONFIGURE, using NULL\n");
 439                 } else {
 440                     static const WCHAR drivers32[] = {'D','r','i','v','e','r','s','3','2','\0'};
 441
 442                     pConfigInfo->dwDCISize = iStructSize;
 443
 444                     section_name = HeapAlloc(MSACM_hHeap, 0, (strlenW(drivers32) + 1) * sizeof(WCHAR));
 445                     if (section_name) strcpyW(section_name, drivers32);
 446                     pConfigInfo->lpszDCISectionName = section_name;
 447                     alias_name = HeapAlloc(MSACM_hHeap, 0, (strlenW(pAlias) + 1) * sizeof(WCHAR));
 448                     if (alias_name) strcpyW(alias_name, pAlias);
 449                     pConfigInfo->lpszDCIAliasName = alias_name;
 450
 451                     if (pConfigInfo->lpszDCISectionName == NULL || pConfigInfo->lpszDCIAliasName == NULL) {
 452                         HeapFree(MSACM_hHeap, 0, alias_name);
 453                         HeapFree(MSACM_hHeap, 0, section_name);
 454                         HeapFree(MSACM_hHeap, 0, pConfigInfo);
 455                         pConfigInfo = NULL;
 456                         ERR("OOM while supplying DRVCONFIGINFO for DRV_CONFIGURE, using NULL\n");
 457                     }
 458                 }
 459             }
 460
 461             lParam2 = (LPARAM)pConfigInfo;
 462         }
 463
 464         if (padid) {
 465             /* Handle is really an HACMDRIVERID, must have an open session to get an HACMDRIVER */
 466             if (padid->pACMDriverList != NULL) {
 467                 lResult = MSACM_Message((HACMDRIVER)padid->pACMDriverList, uMsg, lParam1, lParam2);
 468             } else {
 469                 MMRESULT mmr = acmDriverOpen(&had, (HACMDRIVERID)padid, 0);
 470                 if (mmr != MMSYSERR_NOERROR) {
 471                     lResult = MMSYSERR_INVALPARAM;
 472                 } else {
 473                     lResult = acmDriverMessage(had, uMsg, lParam1, lParam2);
 474                     acmDriverClose(had, 0);
 475                 }
 476             }
 477         } else {
 478             lResult = MSACM_Message(had, uMsg, lParam1, lParam2);
 479         }
 480         if (pConfigInfo) {
 481             HeapFree(MSACM_hHeap, 0, alias_name);
 482             HeapFree(MSACM_hHeap, 0, section_name);
 483             HeapFree(MSACM_hHeap, 0, pConfigInfo);
 484         }
 485         return lResult;
 486     }
 487     WARN("invalid parameter\n");
 488     return MMSYSERR_INVALPARAM;
 489 }
 490
 491 /***********************************************************************
 492  *           acmDriverOpen (MSACM32.@)
 493  */
 494 MMRESULT WINAPI acmDriverOpen(PHACMDRIVER phad, HACMDRIVERID hadid, DWORD fdwOpen)
 495 {
 496     PWINE_ACMDRIVERID   padid;
 497     PWINE_ACMDRIVER     pad = NULL;
 498     MMRESULT            ret;
 499
 500     TRACE("(%p, %p, %08u)\n", phad, hadid, fdwOpen);
 501
 502     if (!phad) {
 503         WARN("invalid parameter\n");
 504         return MMSYSERR_INVALPARAM;
 505     }
 506
 507     if (fdwOpen) {
 508         WARN("invalid flag\n");
 509         return MMSYSERR_INVALFLAG;
 510     }
 511
 512     padid = MSACM_GetDriverID(hadid);
 513     if (!padid) {
 514         WARN("invalid handle\n");
 515         return MMSYSERR_INVALHANDLE;
 516     }
 517
 518     pad = HeapAlloc(MSACM_hHeap, 0, sizeof(WINE_ACMDRIVER));
 519     if (!pad) {
 520         WARN("no memory\n");
 521         return MMSYSERR_NOMEM;
 522     }
 523
 524     pad->obj.dwType = WINE_ACMOBJ_DRIVER;
 525     pad->obj.pACMDriverID = padid;
 526     pad->hDrvr = 0;
 527     pad->pLocalDrvrInst = NULL;
 528
 529     if (padid->pLocalDriver == NULL)
 530     {
 531         ACMDRVOPENDESCW adod;
 532         int             len;
 533         LPWSTR          section_name;
 534
 535         /* this is not an externally added driver... need to actually load it */
 536         if (!padid->pszDriverAlias)
 537         {
 538             ret = MMSYSERR_ERROR;
 539             goto gotError;
 540         }
 541
 542         adod.cbStruct = sizeof(adod);
 543         adod.fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
 544         adod.fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
 545         adod.dwVersion = acmGetVersion();
 546         adod.dwFlags = fdwOpen;
 547         adod.dwError = 0;
 548         len = strlen("Drivers32") + 1;
 549         section_name = HeapAlloc(MSACM_hHeap, 0, len * sizeof(WCHAR));
 550         MultiByteToWideChar(CP_ACP, 0, "Drivers32", -1, section_name, len);
 551         adod.pszSectionName = section_name;
 552         adod.pszAliasName = padid->pszDriverAlias;
 553         adod.dnDevNode = 0;
 554
 555         pad->hDrvr = OpenDriver(padid->pszDriverAlias, NULL, (DWORD_PTR)&adod);
 556
 557         HeapFree(MSACM_hHeap, 0, section_name);
 558         if (!pad->hDrvr)
 559         {
 560             ret = adod.dwError;
 561             if (ret == MMSYSERR_NOERROR)
 562                 ret = MMSYSERR_NODRIVER;
 563             goto gotError;
 564         }
 565     }
 566     else
 567     {
 568         ACMDRVOPENDESCW adod;
 569
 570         pad->hDrvr = NULL;
 571
 572         adod.cbStruct = sizeof(adod);
 573         adod.fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
 574         adod.fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
 575         adod.dwVersion = acmGetVersion();
 576         adod.dwFlags = fdwOpen;
 577         adod.dwError = 0;
 578         adod.pszSectionName = NULL;
 579         adod.pszAliasName = NULL;
 580         adod.dnDevNode = 0;
 581
 582         pad->pLocalDrvrInst = MSACM_OpenLocalDriver(padid->pLocalDriver, (DWORD_PTR)&adod);
 583         if (!pad->pLocalDrvrInst)
 584         {
 585             ret = adod.dwError;
 586             if (ret == MMSYSERR_NOERROR)
 587                 ret = MMSYSERR_NODRIVER;
 588             goto gotError;
 589         }
 590     }
 591
 592     /* insert new pad at beg of list */
 593     pad->pNextACMDriver = padid->pACMDriverList;
 594     padid->pACMDriverList = pad;
 595
 596     /* FIXME: Create a WINE_ACMDRIVER32 */
 597     *phad = (HACMDRIVER)pad;
 598     TRACE("%s => %p\n", debugstr_w(padid->pszDriverAlias), pad);
 599
 600     return MMSYSERR_NOERROR;
 601  gotError:
 602     WARN("failed: ret = %08x\n", ret);
 603     if (pad && !pad->hDrvr)
 604         HeapFree(MSACM_hHeap, 0, pad);
 605     return ret;
 606 }
 607
 608 /***********************************************************************
 609  *           acmDriverPriority (MSACM32.@)
 610  */
 611 MMRESULT WINAPI acmDriverPriority(HACMDRIVERID hadid, DWORD dwPriority, DWORD fdwPriority)
 612 {
 613
 614     TRACE("(%p, %08x, %08x)\n", hadid, dwPriority, fdwPriority);
 615
 616     /* Check for unknown flags */
 617     if (fdwPriority &
 618         ~(ACM_DRIVERPRIORITYF_ENABLE|ACM_DRIVERPRIORITYF_DISABLE|
 619           ACM_DRIVERPRIORITYF_BEGIN|ACM_DRIVERPRIORITYF_END)) {
 620         WARN("invalid flag\n");
 621         return MMSYSERR_INVALFLAG;
 622     }
 623
 624     /* Check for incompatible flags */
 625     if ((fdwPriority & ACM_DRIVERPRIORITYF_ENABLE) &&
 626         (fdwPriority & ACM_DRIVERPRIORITYF_DISABLE)) {
 627         WARN("invalid flag\n");
 628         return MMSYSERR_INVALFLAG;
 629     }
 630
 631     /* Check for incompatible flags */
 632     if ((fdwPriority & ACM_DRIVERPRIORITYF_BEGIN) &&
 633         (fdwPriority & ACM_DRIVERPRIORITYF_END)) {
 634         WARN("invalid flag\n");
 635         return MMSYSERR_INVALFLAG;
 636     }
 637
 638     /* According to MSDN, ACM_DRIVERPRIORITYF_BEGIN and ACM_DRIVERPRIORITYF_END
 639        may only appear by themselves, and in addition, hadid and dwPriority must
 640        both be zero */
 641     if ((fdwPriority & ACM_DRIVERPRIORITYF_BEGIN) ||
 642         (fdwPriority & ACM_DRIVERPRIORITYF_END)) {
 643         if (fdwPriority & ~(ACM_DRIVERPRIORITYF_BEGIN|ACM_DRIVERPRIORITYF_END)) {
 644             WARN("ACM_DRIVERPRIORITYF_[BEGIN|END] cannot be used with any other flags\n");
 645             return MMSYSERR_INVALPARAM;
 646         }
 647         if (dwPriority) {
 648             WARN("priority invalid with ACM_DRIVERPRIORITYF_[BEGIN|END]\n");
 649             return MMSYSERR_INVALPARAM;
 650         }
 651         if (hadid) {
 652             WARN("non-null hadid invalid with ACM_DRIVERPRIORITYF_[BEGIN|END]\n");
 653             return MMSYSERR_INVALPARAM;
 654         }
 655         /* FIXME: MSDN wording suggests that deferred notification should be
 656            implemented as a system-wide lock held by a calling task, and that
 657            re-enabling notifications should broadcast them across all processes.
 658            This implementation uses a simple DWORD counter. One consequence of the
 659            current implementation is that applications will never see
 660            MMSYSERR_ALLOCATED as a return error.
 661          */
 662         if (fdwPriority & ACM_DRIVERPRIORITYF_BEGIN) {
 663             MSACM_DisableNotifications();
 664         } else if (fdwPriority & ACM_DRIVERPRIORITYF_END) {
 665             MSACM_EnableNotifications();
 666         }
 667         return MMSYSERR_NOERROR;
 668     } else {
 669         PWINE_ACMDRIVERID padid;
 670         PWINE_ACMNOTIFYWND panwnd;
 671         BOOL bPerformBroadcast = FALSE;
 672
 673         /* Fetch driver ID */
 674         padid = MSACM_GetDriverID(hadid);
 675         panwnd = MSACM_GetNotifyWnd(hadid);
 676         if (!padid && !panwnd) {
 677             WARN("invalid handle\n");
 678             return MMSYSERR_INVALHANDLE;
 679         }
 680
 681         if (padid) {
 682             /* Check whether driver ID is appropriate for requested op */
 683             if (dwPriority) {
 684                 if (padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_LOCAL) {
 685                     return MMSYSERR_NOTSUPPORTED;
 686                 }
 687                 if (dwPriority != 1 && dwPriority != (DWORD)-1) {
 688                     FIXME("unexpected priority %d, using sign only\n", dwPriority);
 689                     if ((signed)dwPriority < 0) dwPriority = (DWORD)-1;
 690                     if (dwPriority > 0) dwPriority = 1;
 691                 }
 692
 693                 if (dwPriority == 1 && (padid->pPrevACMDriverID == NULL ||
 694                     (padid->pPrevACMDriverID->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_LOCAL))) {
 695                     /* do nothing - driver is first of list, or first after last
 696                        local driver */
 697                 } else if (dwPriority == (DWORD)-1 && padid->pNextACMDriverID == NULL) {
 698                     /* do nothing - driver is last of list */
 699                 } else {
 700                     MSACM_RePositionDriver(padid, dwPriority);
 701                     bPerformBroadcast = TRUE;
 702                 }
 703             }
 704
 705             /* Check whether driver ID should be enabled or disabled */
 706             if (fdwPriority & ACM_DRIVERPRIORITYF_DISABLE) {
 707                 if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED)) {
 708                     padid->fdwSupport |= ACMDRIVERDETAILS_SUPPORTF_DISABLED;
 709                     bPerformBroadcast = TRUE;
 710                 }
 711             } else if (fdwPriority & ACM_DRIVERPRIORITYF_ENABLE) {
 712                 if (padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) {
 713                     padid->fdwSupport &= ~ACMDRIVERDETAILS_SUPPORTF_DISABLED;
 714                     bPerformBroadcast = TRUE;
 715                 }
 716             }
 717         }
 718
 719         if (panwnd) {
 720             if (dwPriority) {
 721                 return MMSYSERR_NOTSUPPORTED;
 722             }
 723
 724             /* Check whether notify window should be enabled or disabled */
 725             if (fdwPriority & ACM_DRIVERPRIORITYF_DISABLE) {
 726                 if (!(panwnd->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED)) {
 727                     panwnd->fdwSupport |= ACMDRIVERDETAILS_SUPPORTF_DISABLED;
 728                     bPerformBroadcast = TRUE;
 729                 }
 730             } else if (fdwPriority & ACM_DRIVERPRIORITYF_ENABLE) {
 731                 if (panwnd->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) {
 732                     panwnd->fdwSupport &= ~ACMDRIVERDETAILS_SUPPORTF_DISABLED;
 733                     bPerformBroadcast = TRUE;
 734                 }
 735             }
 736         }
 737
 738         /* Perform broadcast of changes */
 739         if (bPerformBroadcast) {
 740             MSACM_WriteCurrentPriorities();
 741             MSACM_BroadcastNotification();
 742         }
 743         return MMSYSERR_NOERROR;
 744     }
 745 }
 746
 747 /***********************************************************************
 748  *           acmDriverRemove (MSACM32.@)
 749  */
 750 MMRESULT WINAPI acmDriverRemove(HACMDRIVERID hadid, DWORD fdwRemove)
 751 {
 752     PWINE_ACMDRIVERID padid;
 753     PWINE_ACMNOTIFYWND panwnd;
 754
 755     TRACE("(%p, %08x)\n", hadid, fdwRemove);
 756
 757     padid = MSACM_GetDriverID(hadid);
 758     panwnd = MSACM_GetNotifyWnd(hadid);
 759     if (!padid && !panwnd) {
 760         WARN("invalid handle\n");
 761         return MMSYSERR_INVALHANDLE;
 762     }
 763
 764     if (fdwRemove) {
 765         WARN("invalid flag\n");
 766         return MMSYSERR_INVALFLAG;
 767     }
 768
 769     if (padid) MSACM_UnregisterDriver(padid);
 770     if (panwnd) MSACM_UnRegisterNotificationWindow(panwnd);
 771     MSACM_BroadcastNotification();
 772
 773     return MMSYSERR_NOERROR;
 774 }