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