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         unsigned long 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     HeapFree(MSACM_hHeap, 0, pad);
 218
 219     return MMSYSERR_NOERROR;
 220 }
 221
 222 /***********************************************************************
 223  *           acmDriverDetailsA (MSACM32.@)
 224  */
 225 MMRESULT WINAPI acmDriverDetailsA(HACMDRIVERID hadid, PACMDRIVERDETAILSA padd, DWORD fdwDetails)
 226 {
 227     MMRESULT mmr;
 228     ACMDRIVERDETAILSW   addw;
 229
 230     TRACE("(%p, %p, %08x)\n", hadid, padd, fdwDetails);
 231
 232     if (!padd) {
 233         WARN("invalid parameter\n");
 234         return MMSYSERR_INVALPARAM;
 235     }
 236
 237     if (padd->cbStruct < 4) {
 238         WARN("invalid parameter\n");
 239         return MMSYSERR_INVALPARAM;
 240     }
 241
 242     addw.cbStruct = sizeof(addw);
 243     mmr = acmDriverDetailsW(hadid, &addw, fdwDetails);
 244     if (mmr == 0) {
 245         ACMDRIVERDETAILSA padda;
 246
 247         padda.fccType = addw.fccType;
 248         padda.fccComp = addw.fccComp;
 249         padda.wMid = addw.wMid;
 250         padda.wPid = addw.wPid;
 251         padda.vdwACM = addw.vdwACM;
 252         padda.vdwDriver = addw.vdwDriver;
 253         padda.fdwSupport = addw.fdwSupport;
 254         padda.cFormatTags = addw.cFormatTags;
 255         padda.cFilterTags = addw.cFilterTags;
 256         padda.hicon = addw.hicon;
 257         WideCharToMultiByte( CP_ACP, 0, addw.szShortName, -1, padda.szShortName,
 258                              sizeof(padda.szShortName), NULL, NULL );
 259         WideCharToMultiByte( CP_ACP, 0, addw.szLongName, -1, padda.szLongName,
 260                              sizeof(padda.szLongName), NULL, NULL );
 261         WideCharToMultiByte( CP_ACP, 0, addw.szCopyright, -1, padda.szCopyright,
 262                              sizeof(padda.szCopyright), NULL, NULL );
 263         WideCharToMultiByte( CP_ACP, 0, addw.szLicensing, -1, padda.szLicensing,
 264                              sizeof(padda.szLicensing), NULL, NULL );
 265         WideCharToMultiByte( CP_ACP, 0, addw.szFeatures, -1, padda.szFeatures,
 266                              sizeof(padda.szFeatures), NULL, NULL );
 267         padda.cbStruct = min(padd->cbStruct, sizeof(*padd));
 268         memcpy(padd, &padda, padda.cbStruct);
 269     }
 270     return mmr;
 271 }
 272
 273 /***********************************************************************
 274  *           acmDriverDetailsW (MSACM32.@)
 275  */
 276 MMRESULT WINAPI acmDriverDetailsW(HACMDRIVERID hadid, PACMDRIVERDETAILSW padd, DWORD fdwDetails)
 277 {
 278     HACMDRIVER acmDrvr;
 279     MMRESULT mmr;
 280
 281     TRACE("(%p, %p, %08x)\n", hadid, padd, fdwDetails);
 282
 283     if (!padd) {
 284         WARN("invalid parameter\n");
 285         return MMSYSERR_INVALPARAM;
 286     }
 287
 288     if (padd->cbStruct < 4) {
 289         WARN("invalid parameter\n");
 290         return MMSYSERR_INVALPARAM;
 291     }
 292
 293     if (fdwDetails) {
 294         WARN("invalid flag\n");
 295         return MMSYSERR_INVALFLAG;
 296     }
 297
 298     mmr = acmDriverOpen(&acmDrvr, hadid, 0);
 299     if (mmr == MMSYSERR_NOERROR) {
 300         ACMDRIVERDETAILSW paddw;
 301         paddw.cbStruct = sizeof(paddw);
 302         mmr = MSACM_Message(acmDrvr, ACMDM_DRIVER_DETAILS, (LPARAM)&paddw,  0);
 303
 304         acmDriverClose(acmDrvr, 0);
 305         paddw.cbStruct = min(padd->cbStruct, sizeof(*padd));
 306         memcpy(padd, &paddw, paddw.cbStruct);
 307     }
 308
 309     return mmr;
 310 }
 311
 312 /***********************************************************************
 313  *           acmDriverEnum (MSACM32.@)
 314  */
 315 MMRESULT WINAPI acmDriverEnum(ACMDRIVERENUMCB fnCallback, DWORD_PTR dwInstance,
 316                               DWORD fdwEnum)
 317 {
 318     PWINE_ACMDRIVERID   padid;
 319     DWORD               fdwSupport;
 320
 321     TRACE("(%p, %08lx, %08x)\n", fnCallback, dwInstance, fdwEnum);
 322
 323     if (!fnCallback) {
 324         WARN("invalid parameter\n");
 325         return MMSYSERR_INVALPARAM;
 326     }
 327
 328     if (fdwEnum & ~(ACM_DRIVERENUMF_NOLOCAL|ACM_DRIVERENUMF_DISABLED)) {
 329         WARN("invalid flag\n");
 330         return MMSYSERR_INVALFLAG;
 331     }
 332
 333     for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
 334         fdwSupport = padid->fdwSupport;
 335
 336         if (padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) {
 337             if (fdwEnum & ACM_DRIVERENUMF_DISABLED)
 338                 fdwSupport |= ACMDRIVERDETAILS_SUPPORTF_DISABLED;
 339             else
 340                 continue;
 341         }
 342         if (!(*fnCallback)((HACMDRIVERID)padid, dwInstance, fdwSupport))
 343             break;
 344     }
 345
 346     return MMSYSERR_NOERROR;
 347 }
 348
 349 /***********************************************************************
 350  *           acmDriverID (MSACM32.@)
 351  */
 352 MMRESULT WINAPI acmDriverID(HACMOBJ hao, PHACMDRIVERID phadid, DWORD fdwDriverID)
 353 {
 354     PWINE_ACMOBJ pao;
 355
 356     TRACE("(%p, %p, %08x)\n", hao, phadid, fdwDriverID);
 357
 358     if (fdwDriverID) {
 359         WARN("invalid flag\n");
 360         return MMSYSERR_INVALFLAG;
 361     }
 362
 363     pao = MSACM_GetObj(hao, WINE_ACMOBJ_DONTCARE);
 364     if (!pao) {
 365         WARN("invalid handle\n");
 366         return MMSYSERR_INVALHANDLE;
 367     }
 368
 369     if (!phadid) {
 370         WARN("invalid parameter\n");
 371         return MMSYSERR_INVALPARAM;
 372     }
 373
 374     *phadid = (HACMDRIVERID) pao->pACMDriverID;
 375
 376     return MMSYSERR_NOERROR;
 377 }
 378
 379 /***********************************************************************
 380  *           acmDriverMessage (MSACM32.@)
 381  *
 382  * Note: MSDN documentation (July 2001) is incomplete. This function
 383  * accepts sending messages to an HACMDRIVERID in addition to the
 384  * documented HACMDRIVER. In fact, for DRV_QUERYCONFIGURE and DRV_CONFIGURE,
 385  * this might actually be the required mode of operation.
 386  *
 387  * Note: For DRV_CONFIGURE, msacm supplies its own DRVCONFIGINFO structure
 388  * when the application fails to supply one. Some native drivers depend on
 389  * this and refuse to display unless a valid DRVCONFIGINFO structure is
 390  * built and supplied.
 391  */
 392 LRESULT WINAPI acmDriverMessage(HACMDRIVER had, UINT uMsg, LPARAM lParam1, LPARAM lParam2)
 393 {
 394     TRACE("(%p, %04x, %08lx, %08lx\n", had, uMsg, lParam1, lParam2);
 395
 396     if ((uMsg >= ACMDM_USER && uMsg < ACMDM_RESERVED_LOW) ||
 397         uMsg == ACMDM_DRIVER_ABOUT ||
 398         uMsg == DRV_QUERYCONFIGURE ||
 399         uMsg == DRV_CONFIGURE)
 400     {
 401         PWINE_ACMDRIVERID padid;
 402         LRESULT lResult;
 403         LPDRVCONFIGINFO pConfigInfo = NULL;
 404         LPWSTR section_name = NULL;
 405         LPWSTR alias_name = NULL;
 406
 407         /* Check whether handle is an HACMDRIVERID */
 408         padid  = MSACM_GetDriverID((HACMDRIVERID)had);
 409
 410         /* If the message is DRV_CONFIGURE, and the application provides no
 411            DRVCONFIGINFO structure, msacm must supply its own.
 412          */
 413         if (uMsg == DRV_CONFIGURE && lParam2 == 0) {
 414             LPWSTR pAlias;
 415
 416             /* Get the alias from the HACMDRIVERID */
 417             if (padid) {
 418                 pAlias = padid->pszDriverAlias;
 419                 if (pAlias == NULL) {
 420                     WARN("DRV_CONFIGURE: no alias for this driver, cannot self-supply alias\n");
 421                 }
 422             } else {
 423                 FIXME("DRV_CONFIGURE: reverse lookup HACMDRIVER -> HACMDRIVERID not implemented\n");
 424                 pAlias = NULL;
 425             }
 426
 427             if (pAlias != NULL) {
 428                 /* DRVCONFIGINFO is only 12 bytes long, but native msacm
 429                  * reports a 16-byte structure to codecs, so allocate 16 bytes,
 430                  * just to be on the safe side.
 431                  */
 432                 const unsigned int iStructSize = 16;
 433                 pConfigInfo = HeapAlloc(MSACM_hHeap, 0, iStructSize);
 434                 if (!pConfigInfo) {
 435                     ERR("OOM while supplying DRVCONFIGINFO for DRV_CONFIGURE, using NULL\n");
 436                 } else {
 437                     static const WCHAR drivers32[] = {'D','r','i','v','e','r','s','3','2','\0'};
 438
 439                     pConfigInfo->dwDCISize = iStructSize;
 440
 441                     section_name = HeapAlloc(MSACM_hHeap, 0, (strlenW(drivers32) + 1) * sizeof(WCHAR));
 442                     if (section_name) strcpyW(section_name, drivers32);
 443                     pConfigInfo->lpszDCISectionName = section_name;
 444                     alias_name = HeapAlloc(MSACM_hHeap, 0, (strlenW(pAlias) + 1) * sizeof(WCHAR));
 445                     if (alias_name) strcpyW(alias_name, pAlias);
 446                     pConfigInfo->lpszDCIAliasName = alias_name;
 447
 448                     if (pConfigInfo->lpszDCISectionName == NULL || pConfigInfo->lpszDCIAliasName == NULL) {
 449                         HeapFree(MSACM_hHeap, 0, alias_name);
 450                         HeapFree(MSACM_hHeap, 0, section_name);
 451                         HeapFree(MSACM_hHeap, 0, pConfigInfo);
 452                         pConfigInfo = NULL;
 453                         ERR("OOM while supplying DRVCONFIGINFO for DRV_CONFIGURE, using NULL\n");
 454                     }
 455                 }
 456             }
 457
 458             lParam2 = (LPARAM)pConfigInfo;
 459         }
 460
 461         if (padid) {
 462             /* Handle is really an HACMDRIVERID, must have an open session to get an HACMDRIVER */
 463             if (padid->pACMDriverList != NULL) {
 464                 lResult = MSACM_Message((HACMDRIVER)padid->pACMDriverList, uMsg, lParam1, lParam2);
 465             } else {
 466                 MMRESULT mmr = acmDriverOpen(&had, (HACMDRIVERID)padid, 0);
 467                 if (mmr != MMSYSERR_NOERROR) {
 468                     lResult = MMSYSERR_INVALPARAM;
 469                 } else {
 470                     lResult = acmDriverMessage(had, uMsg, lParam1, lParam2);
 471                     acmDriverClose(had, 0);
 472                 }
 473             }
 474         } else {
 475             lResult = MSACM_Message(had, uMsg, lParam1, lParam2);
 476         }
 477         if (pConfigInfo) {
 478             HeapFree(MSACM_hHeap, 0, alias_name);
 479             HeapFree(MSACM_hHeap, 0, section_name);
 480             HeapFree(MSACM_hHeap, 0, pConfigInfo);
 481         }
 482         return lResult;
 483     }
 484     WARN("invalid parameter\n");
 485     return MMSYSERR_INVALPARAM;
 486 }
 487
 488 /***********************************************************************
 489  *           acmDriverOpen (MSACM32.@)
 490  */
 491 MMRESULT WINAPI acmDriverOpen(PHACMDRIVER phad, HACMDRIVERID hadid, DWORD fdwOpen)
 492 {
 493     PWINE_ACMDRIVERID   padid;
 494     PWINE_ACMDRIVER     pad = NULL;
 495     MMRESULT            ret;
 496
 497     TRACE("(%p, %p, %08u)\n", phad, hadid, fdwOpen);
 498
 499     if (!phad) {
 500         WARN("invalid parameter\n");
 501         return MMSYSERR_INVALPARAM;
 502     }
 503
 504     if (fdwOpen) {
 505         WARN("invalid flag\n");
 506         return MMSYSERR_INVALFLAG;
 507     }
 508
 509     padid = MSACM_GetDriverID(hadid);
 510     if (!padid) {
 511         WARN("invalid handle\n");
 512         return MMSYSERR_INVALHANDLE;
 513     }
 514
 515     pad = HeapAlloc(MSACM_hHeap, 0, sizeof(WINE_ACMDRIVER));
 516     if (!pad) {
 517         WARN("no memory\n");
 518         return MMSYSERR_NOMEM;
 519     }
 520
 521     pad->obj.dwType = WINE_ACMOBJ_DRIVER;
 522     pad->obj.pACMDriverID = padid;
 523     pad->hDrvr = 0;
 524     pad->pLocalDrvrInst = NULL;
 525
 526     if (padid->pLocalDriver == NULL)
 527     {
 528         ACMDRVOPENDESCW adod;
 529         int             len;
 530         LPWSTR          section_name;
 531
 532         /* this is not an externally added driver... need to actually load it */
 533         if (!padid->pszDriverAlias)
 534         {
 535             ret = MMSYSERR_ERROR;
 536             goto gotError;
 537         }
 538
 539         adod.cbStruct = sizeof(adod);
 540         adod.fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
 541         adod.fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
 542         adod.dwVersion = acmGetVersion();
 543         adod.dwFlags = fdwOpen;
 544         adod.dwError = 0;
 545         len = strlen("Drivers32") + 1;
 546         section_name = HeapAlloc(MSACM_hHeap, 0, len * sizeof(WCHAR));
 547         MultiByteToWideChar(CP_ACP, 0, "Drivers32", -1, section_name, len);
 548         adod.pszSectionName = section_name;
 549         adod.pszAliasName = padid->pszDriverAlias;
 550         adod.dnDevNode = 0;
 551
 552         pad->hDrvr = OpenDriver(padid->pszDriverAlias, NULL, (DWORD_PTR)&adod);
 553
 554         HeapFree(MSACM_hHeap, 0, section_name);
 555         if (!pad->hDrvr)
 556         {
 557             ret = adod.dwError;
 558             goto gotError;
 559         }
 560     }
 561     else
 562     {
 563         ACMDRVOPENDESCW adod;
 564
 565         pad->hDrvr = NULL;
 566
 567         adod.cbStruct = sizeof(adod);
 568         adod.fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
 569         adod.fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
 570         adod.dwVersion = acmGetVersion();
 571         adod.dwFlags = fdwOpen;
 572         adod.dwError = 0;
 573         adod.pszSectionName = NULL;
 574         adod.pszAliasName = NULL;
 575         adod.dnDevNode = 0;
 576
 577         pad->pLocalDrvrInst = MSACM_OpenLocalDriver(padid->pLocalDriver, (DWORD_PTR)&adod);
 578         if (!pad->pLocalDrvrInst)
 579         {
 580             ret = adod.dwError;
 581             goto gotError;
 582         }
 583     }
 584
 585     /* insert new pad at beg of list */
 586     pad->pNextACMDriver = padid->pACMDriverList;
 587     padid->pACMDriverList = pad;
 588
 589     /* FIXME: Create a WINE_ACMDRIVER32 */
 590     *phad = (HACMDRIVER)pad;
 591     TRACE("%s => %p\n", debugstr_w(padid->pszDriverAlias), pad);
 592
 593     return MMSYSERR_NOERROR;
 594  gotError:
 595     WARN("failed: ret = %08x\n", ret);
 596     if (pad && !pad->hDrvr)
 597         HeapFree(MSACM_hHeap, 0, pad);
 598     return ret;
 599 }
 600
 601 /***********************************************************************
 602  *           acmDriverPriority (MSACM32.@)
 603  */
 604 MMRESULT WINAPI acmDriverPriority(HACMDRIVERID hadid, DWORD dwPriority, DWORD fdwPriority)
 605 {
 606
 607     TRACE("(%p, %08x, %08x)\n", hadid, dwPriority, fdwPriority);
 608
 609     /* Check for unknown flags */
 610     if (fdwPriority &
 611         ~(ACM_DRIVERPRIORITYF_ENABLE|ACM_DRIVERPRIORITYF_DISABLE|
 612           ACM_DRIVERPRIORITYF_BEGIN|ACM_DRIVERPRIORITYF_END)) {
 613         WARN("invalid flag\n");
 614         return MMSYSERR_INVALFLAG;
 615     }
 616
 617     /* Check for incompatible flags */
 618     if ((fdwPriority & ACM_DRIVERPRIORITYF_ENABLE) &&
 619         (fdwPriority & ACM_DRIVERPRIORITYF_DISABLE)) {
 620         WARN("invalid flag\n");
 621         return MMSYSERR_INVALFLAG;
 622     }
 623
 624     /* Check for incompatible flags */
 625     if ((fdwPriority & ACM_DRIVERPRIORITYF_BEGIN) &&
 626         (fdwPriority & ACM_DRIVERPRIORITYF_END)) {
 627         WARN("invalid flag\n");
 628         return MMSYSERR_INVALFLAG;
 629     }
 630
 631     /* According to MSDN, ACM_DRIVERPRIORITYF_BEGIN and ACM_DRIVERPRIORITYF_END
 632        may only appear by themselves, and in addition, hadid and dwPriority must
 633        both be zero */
 634     if ((fdwPriority & ACM_DRIVERPRIORITYF_BEGIN) ||
 635         (fdwPriority & ACM_DRIVERPRIORITYF_END)) {
 636         if (fdwPriority & ~(ACM_DRIVERPRIORITYF_BEGIN|ACM_DRIVERPRIORITYF_END)) {
 637             WARN("ACM_DRIVERPRIORITYF_[BEGIN|END] cannot be used with any other flags\n");
 638             return MMSYSERR_INVALPARAM;
 639         }
 640         if (dwPriority) {
 641             WARN("priority invalid with ACM_DRIVERPRIORITYF_[BEGIN|END]\n");
 642             return MMSYSERR_INVALPARAM;
 643         }
 644         if (hadid) {
 645             WARN("non-null hadid invalid with ACM_DRIVERPRIORITYF_[BEGIN|END]\n");
 646             return MMSYSERR_INVALPARAM;
 647         }
 648         /* FIXME: MSDN wording suggests that deferred notification should be
 649            implemented as a system-wide lock held by a calling task, and that
 650            re-enabling notifications should broadcast them across all processes.
 651            This implementation uses a simple DWORD counter. One consequence of the
 652            current implementation is that applications will never see
 653            MMSYSERR_ALLOCATED as a return error.
 654          */
 655         if (fdwPriority & ACM_DRIVERPRIORITYF_BEGIN) {
 656             MSACM_DisableNotifications();
 657         } else if (fdwPriority & ACM_DRIVERPRIORITYF_END) {
 658             MSACM_EnableNotifications();
 659         }
 660         return MMSYSERR_NOERROR;
 661     } else {
 662         PWINE_ACMDRIVERID padid;
 663         PWINE_ACMNOTIFYWND panwnd;
 664         BOOL bPerformBroadcast = FALSE;
 665
 666         /* Fetch driver ID */
 667         padid = MSACM_GetDriverID(hadid);
 668         panwnd = MSACM_GetNotifyWnd(hadid);
 669         if (!padid && !panwnd) {
 670             WARN("invalid handle\n");
 671             return MMSYSERR_INVALHANDLE;
 672         }
 673
 674         if (padid) {
 675             /* Check whether driver ID is appropriate for requested op */
 676             if (dwPriority) {
 677                 if (padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_LOCAL) {
 678                     return MMSYSERR_NOTSUPPORTED;
 679                 }
 680                 if (dwPriority != 1 && dwPriority != (DWORD)-1) {
 681                     FIXME("unexpected priority %d, using sign only\n", dwPriority);
 682                     if ((signed)dwPriority < 0) dwPriority = (DWORD)-1;
 683                     if (dwPriority > 0) dwPriority = 1;
 684                 }
 685
 686                 if (dwPriority == 1 && (padid->pPrevACMDriverID == NULL ||
 687                     (padid->pPrevACMDriverID->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_LOCAL))) {
 688                     /* do nothing - driver is first of list, or first after last
 689                        local driver */
 690                 } else if (dwPriority == (DWORD)-1 && padid->pNextACMDriverID == NULL) {
 691                     /* do nothing - driver is last of list */
 692                 } else {
 693                     MSACM_RePositionDriver(padid, dwPriority);
 694                     bPerformBroadcast = TRUE;
 695                 }
 696             }
 697
 698             /* Check whether driver ID should be enabled or disabled */
 699             if (fdwPriority & ACM_DRIVERPRIORITYF_DISABLE) {
 700                 if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED)) {
 701                     padid->fdwSupport |= ACMDRIVERDETAILS_SUPPORTF_DISABLED;
 702                     bPerformBroadcast = TRUE;
 703                 }
 704             } else if (fdwPriority & ACM_DRIVERPRIORITYF_ENABLE) {
 705                 if (padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) {
 706                     padid->fdwSupport &= ~ACMDRIVERDETAILS_SUPPORTF_DISABLED;
 707                     bPerformBroadcast = TRUE;
 708                 }
 709             }
 710         }
 711
 712         if (panwnd) {
 713             if (dwPriority) {
 714                 return MMSYSERR_NOTSUPPORTED;
 715             }
 716
 717             /* Check whether notify window should be enabled or disabled */
 718             if (fdwPriority & ACM_DRIVERPRIORITYF_DISABLE) {
 719                 if (!(panwnd->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED)) {
 720                     panwnd->fdwSupport |= ACMDRIVERDETAILS_SUPPORTF_DISABLED;
 721                     bPerformBroadcast = TRUE;
 722                 }
 723             } else if (fdwPriority & ACM_DRIVERPRIORITYF_ENABLE) {
 724                 if (panwnd->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) {
 725                     panwnd->fdwSupport &= ~ACMDRIVERDETAILS_SUPPORTF_DISABLED;
 726                     bPerformBroadcast = TRUE;
 727                 }
 728             }
 729         }
 730
 731         /* Perform broadcast of changes */
 732         if (bPerformBroadcast) {
 733             MSACM_WriteCurrentPriorities();
 734             MSACM_BroadcastNotification();
 735         }
 736         return MMSYSERR_NOERROR;
 737     }
 738 }
 739
 740 /***********************************************************************
 741  *           acmDriverRemove (MSACM32.@)
 742  */
 743 MMRESULT WINAPI acmDriverRemove(HACMDRIVERID hadid, DWORD fdwRemove)
 744 {
 745     PWINE_ACMDRIVERID padid;
 746     PWINE_ACMNOTIFYWND panwnd;
 747
 748     TRACE("(%p, %08x)\n", hadid, fdwRemove);
 749
 750     padid = MSACM_GetDriverID(hadid);
 751     panwnd = MSACM_GetNotifyWnd(hadid);
 752     if (!padid && !panwnd) {
 753         WARN("invalid handle\n");
 754         return MMSYSERR_INVALHANDLE;
 755     }
 756
 757     if (fdwRemove) {
 758         WARN("invalid flag\n");
 759         return MMSYSERR_INVALFLAG;
 760     }
 761
 762     if (padid) MSACM_UnregisterDriver(padid);
 763     if (panwnd) MSACM_UnRegisterNotificationWindow(panwnd);
 764     MSACM_BroadcastNotification();
 765
 766     return MMSYSERR_NOERROR;
 767 }