git.oblomov.eu Git - wine/blob - dlls/msacm32/format.c

   1 /*
   2  *      MSACM32 library
   3  *
   4  *      Copyright 1998  Patrik Stridvall
   5  *                2000  Eric Pouech
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include <stdarg.h>
  23 #include <string.h>
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "winnls.h"
  27 #include "winerror.h"
  28 #include "wingdi.h"
  29 #include "winuser.h"
  30 #include "wine/unicode.h"
  31 #include "wine/debug.h"
  32 #include "mmsystem.h"
  33 #include "mmreg.h"
  34 #include "msacm.h"
  35 #include "msacmdrv.h"
  36 #include "wineacm.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(msacm);
  39
  40 struct MSACM_FillFormatData {
  41     HWND                hWnd;
  42 #define WINE_ACMFF_TAG          0
  43 #define WINE_ACMFF_FORMAT       1
  44 #define WINE_ACMFF_WFX          2
  45     int                 mode;
  46     WCHAR               szFormatTag[ACMFORMATTAGDETAILS_FORMATTAG_CHARS];
  47     PACMFORMATCHOOSEW   afc;
  48     DWORD               ret;
  49 };
  50
  51 static BOOL CALLBACK MSACM_FillFormatTagsCB(HACMDRIVERID hadid,
  52                                             PACMFORMATTAGDETAILSW paftd,
  53                                             DWORD_PTR dwInstance,
  54                                             DWORD fdwSupport)
  55 {
  56     struct MSACM_FillFormatData*        affd = (struct MSACM_FillFormatData*)dwInstance;
  57
  58     switch (affd->mode) {
  59     case WINE_ACMFF_TAG:
  60         if (SendDlgItemMessageW(affd->hWnd, IDD_ACMFORMATCHOOSE_CMB_FORMATTAG,
  61                                 CB_FINDSTRINGEXACT, -1,
  62                                 (LPARAM)paftd->szFormatTag) == CB_ERR)
  63             SendDlgItemMessageW(affd->hWnd, IDD_ACMFORMATCHOOSE_CMB_FORMATTAG,
  64                                 CB_ADDSTRING, 0, (LPARAM)paftd->szFormatTag);
  65         break;
  66     case WINE_ACMFF_FORMAT:
  67         if (strcmpW(affd->szFormatTag, paftd->szFormatTag) == 0) {
  68             HACMDRIVER          had;
  69
  70             if (acmDriverOpen(&had, hadid, 0) == MMSYSERR_NOERROR) {
  71                 ACMFORMATDETAILSW       afd;
  72                 unsigned int            i, len;
  73                 MMRESULT                mmr;
  74                 WCHAR                   buffer[ACMFORMATDETAILS_FORMAT_CHARS+16];
  75
  76                 afd.cbStruct = sizeof(afd);
  77                 afd.dwFormatTag = paftd->dwFormatTag;
  78                 afd.pwfx = HeapAlloc(MSACM_hHeap, 0, paftd->cbFormatSize);
  79                 if (!afd.pwfx) return FALSE;
  80                 afd.pwfx->wFormatTag = paftd->dwFormatTag;
  81                 afd.pwfx->cbSize = paftd->cbFormatSize;
  82                 afd.cbwfx = paftd->cbFormatSize;
  83
  84                 for (i = 0; i < paftd->cStandardFormats; i++) {
  85                     static const WCHAR fmtW[] = {'%','d',' ','K','o','/','s','\0'};
  86                     int j;
  87
  88                     afd.dwFormatIndex = i;
  89                     mmr = acmFormatDetailsW(had, &afd, ACM_FORMATDETAILSF_INDEX);
  90                     if (mmr == MMSYSERR_NOERROR) {
  91                        lstrcpynW(buffer, afd.szFormat, ACMFORMATTAGDETAILS_FORMATTAG_CHARS + 1);
  92                        len = strlenW(buffer);
  93                        for (j = len; j < ACMFORMATTAGDETAILS_FORMATTAG_CHARS; j++)
  94                            buffer[j] = ' ';
  95                        wsprintfW(buffer + ACMFORMATTAGDETAILS_FORMATTAG_CHARS,
  96                                  fmtW, (afd.pwfx->nAvgBytesPerSec + 512) / 1024);
  97                        SendDlgItemMessageW(affd->hWnd,
  98                                            IDD_ACMFORMATCHOOSE_CMB_FORMAT,
  99                                            CB_ADDSTRING, 0, (LPARAM)buffer);
 100                     }
 101                 }
 102                 acmDriverClose(had, 0);
 103                 SendDlgItemMessageW(affd->hWnd, IDD_ACMFORMATCHOOSE_CMB_FORMAT,
 104                                     CB_SETCURSEL, 0, 0);
 105                 HeapFree(MSACM_hHeap, 0, afd.pwfx);
 106             }
 107         }
 108         break;
 109     case WINE_ACMFF_WFX:
 110         if (strcmpW(affd->szFormatTag, paftd->szFormatTag) == 0) {
 111             HACMDRIVER          had;
 112
 113             if (acmDriverOpen(&had, hadid, 0) == MMSYSERR_NOERROR) {
 114                 ACMFORMATDETAILSW       afd;
 115
 116                 afd.cbStruct = sizeof(afd);
 117                 afd.dwFormatTag = paftd->dwFormatTag;
 118                 afd.pwfx = affd->afc->pwfx;
 119                 afd.cbwfx = affd->afc->cbwfx;
 120
 121                 afd.dwFormatIndex = SendDlgItemMessageW(affd->hWnd, IDD_ACMFORMATCHOOSE_CMB_FORMAT,
 122                                                         CB_GETCURSEL, 0, 0);
 123                 affd->ret = acmFormatDetailsW(had, &afd, ACM_FORMATDETAILSF_INDEX);
 124                 acmDriverClose(had, 0);
 125                 return TRUE;
 126             }
 127         }
 128         break;
 129     default:
 130         FIXME("Unknown mode (%d)\n", affd->mode);
 131         break;
 132     }
 133     return TRUE;
 134 }
 135
 136 static BOOL MSACM_FillFormatTags(HWND hWnd)
 137 {
 138     ACMFORMATTAGDETAILSW        aftd;
 139     struct MSACM_FillFormatData affd;
 140
 141     memset(&aftd, 0, sizeof(aftd));
 142     aftd.cbStruct = sizeof(aftd);
 143
 144     affd.hWnd = hWnd;
 145     affd.mode = WINE_ACMFF_TAG;
 146
 147     acmFormatTagEnumW(NULL, &aftd, MSACM_FillFormatTagsCB, (DWORD_PTR)&affd, 0);
 148     SendDlgItemMessageW(hWnd, IDD_ACMFORMATCHOOSE_CMB_FORMATTAG, CB_SETCURSEL, 0, 0);
 149     return TRUE;
 150 }
 151
 152 static BOOL MSACM_FillFormat(HWND hWnd)
 153 {
 154     ACMFORMATTAGDETAILSW        aftd;
 155     struct MSACM_FillFormatData affd;
 156
 157     SendDlgItemMessageW(hWnd, IDD_ACMFORMATCHOOSE_CMB_FORMAT, CB_RESETCONTENT, 0, 0);
 158
 159     memset(&aftd, 0, sizeof(aftd));
 160     aftd.cbStruct = sizeof(aftd);
 161
 162     affd.hWnd = hWnd;
 163     affd.mode = WINE_ACMFF_FORMAT;
 164     SendDlgItemMessageW(hWnd, IDD_ACMFORMATCHOOSE_CMB_FORMATTAG,
 165                         CB_GETLBTEXT,
 166                         SendDlgItemMessageW(hWnd, IDD_ACMFORMATCHOOSE_CMB_FORMATTAG,
 167                                             CB_GETCURSEL, 0, 0),
 168                         (LPARAM)affd.szFormatTag);
 169
 170     acmFormatTagEnumW(NULL, &aftd, MSACM_FillFormatTagsCB, (DWORD_PTR)&affd, 0);
 171     SendDlgItemMessageW(hWnd, IDD_ACMFORMATCHOOSE_CMB_FORMAT, CB_SETCURSEL, 0, 0);
 172     return TRUE;
 173 }
 174
 175 static MMRESULT MSACM_GetWFX(HWND hWnd, PACMFORMATCHOOSEW afc)
 176 {
 177     ACMFORMATTAGDETAILSW        aftd;
 178     struct MSACM_FillFormatData affd;
 179
 180     memset(&aftd, 0, sizeof(aftd));
 181     aftd.cbStruct = sizeof(aftd);
 182
 183     affd.hWnd = hWnd;
 184     affd.mode = WINE_ACMFF_WFX;
 185     affd.afc = afc;
 186     affd.ret = MMSYSERR_NOERROR;
 187     SendDlgItemMessageW(hWnd, IDD_ACMFORMATCHOOSE_CMB_FORMATTAG,
 188                         CB_GETLBTEXT,
 189                         SendDlgItemMessageW(hWnd, IDD_ACMFORMATCHOOSE_CMB_FORMATTAG,
 190                                             CB_GETCURSEL, 0, 0),
 191                         (LPARAM)affd.szFormatTag);
 192
 193     acmFormatTagEnumW(NULL, &aftd, MSACM_FillFormatTagsCB, (DWORD_PTR)&affd, 0);
 194     return affd.ret;
 195 }
 196
 197 static const WCHAR fmt_prop[] = {'a','c','m','p','r','o','p','\0'};
 198
 199 static INT_PTR CALLBACK FormatChooseDlgProc(HWND hWnd, UINT msg,
 200                                             WPARAM wParam, LPARAM lParam)
 201 {
 202     PACMFORMATCHOOSEW   afc = (PACMFORMATCHOOSEW)GetPropW(hWnd, fmt_prop);
 203
 204     TRACE("hwnd=%p msg=%i 0x%08lx 0x%08lx\n", hWnd, msg, wParam, lParam);
 205
 206     switch (msg) {
 207     case WM_INITDIALOG:
 208         afc = (PACMFORMATCHOOSEW)lParam;
 209         SetPropW(hWnd, fmt_prop, (HANDLE)afc);
 210         MSACM_FillFormatTags(hWnd);
 211         MSACM_FillFormat(hWnd);
 212         if ((afc->fdwStyle & ~(ACMFORMATCHOOSE_STYLEF_CONTEXTHELP|
 213                                ACMFORMATCHOOSE_STYLEF_SHOWHELP|
 214                                ACMFORMATCHOOSE_STYLEF_ENABLETEMPLATEHANDLE|
 215                                ACMFORMATCHOOSE_STYLEF_ENABLETEMPLATE)) != 0)
 216             FIXME("Unsupported style %08x\n", afc->fdwStyle);
 217         if (!(afc->fdwStyle & ACMFORMATCHOOSE_STYLEF_SHOWHELP))
 218             ShowWindow(GetDlgItem(hWnd, IDD_ACMFORMATCHOOSE_BTN_HELP), SW_HIDE);
 219         return TRUE;
 220
 221     case WM_COMMAND:
 222         switch (LOWORD(wParam)) {
 223         case IDOK:
 224             EndDialog(hWnd, MSACM_GetWFX(hWnd, afc));
 225             return TRUE;
 226         case IDCANCEL:
 227             EndDialog(hWnd, ACMERR_CANCELED);
 228             return TRUE;
 229         case IDD_ACMFORMATCHOOSE_CMB_FORMATTAG:
 230             switch (HIWORD(wParam)) {
 231             case CBN_SELCHANGE:
 232                 MSACM_FillFormat(hWnd);
 233                 break;
 234             default:
 235                 TRACE("Dropped dlgNotif (fmtTag): 0x%08x 0x%08lx\n",
 236                       HIWORD(wParam), lParam);
 237                 break;
 238             }
 239             break;
 240         case IDD_ACMFORMATCHOOSE_BTN_HELP:
 241             if (afc->fdwStyle & ACMFORMATCHOOSE_STYLEF_SHOWHELP)
 242                 SendMessageW(afc->hwndOwner,
 243                              RegisterWindowMessageW(ACMHELPMSGSTRINGW), 0L, 0L);
 244             break;
 245
 246         default:
 247             TRACE("Dropped dlgCmd: ctl=%d ntf=0x%04x 0x%08lx\n",
 248                   LOWORD(wParam), HIWORD(wParam), lParam);
 249             break;
 250         }
 251         break;
 252     case WM_CONTEXTMENU:
 253         if (afc->fdwStyle & ACMFORMATCHOOSE_STYLEF_CONTEXTHELP)
 254             SendMessageW(afc->hwndOwner,
 255                          RegisterWindowMessageW(ACMHELPMSGCONTEXTMENUW),
 256                          wParam, lParam);
 257         break;
 258 #if defined(WM_CONTEXTHELP)
 259     case WM_CONTEXTHELP:
 260         if (afc->fdwStyle & ACMFORMATCHOOSE_STYLEF_CONTEXTHELP)
 261             SendMessageW(afc->hwndOwner,
 262                          RegisterWindowMessageW(ACMHELPMSGCONTEXTHELPW),
 263                          wParam, lParam);
 264         break;
 265 #endif
 266     default:
 267         TRACE("Dropped dlgMsg: hwnd=%p msg=%i 0x%08lx 0x%08lx\n",
 268               hWnd,  msg, wParam, lParam );
 269         break;
 270     }
 271     return FALSE;
 272 }
 273
 274 /***********************************************************************
 275  *           acmFormatChooseA (MSACM32.@)
 276  */
 277 MMRESULT WINAPI acmFormatChooseA(PACMFORMATCHOOSEA pafmtc)
 278 {
 279     ACMFORMATCHOOSEW    afcw;
 280     MMRESULT            ret;
 281     LPWSTR              title = NULL;
 282     LPWSTR              name = NULL;
 283     LPWSTR              templ = NULL;
 284     DWORD               sz;
 285
 286     afcw.cbStruct  = sizeof(afcw);
 287     afcw.fdwStyle  = pafmtc->fdwStyle;
 288     afcw.hwndOwner = pafmtc->hwndOwner;
 289     afcw.pwfx      = pafmtc->pwfx;
 290     afcw.cbwfx     = pafmtc->cbwfx;
 291     if (pafmtc->pszTitle)
 292     {
 293         sz = MultiByteToWideChar(CP_ACP, 0, pafmtc->pszTitle, -1, NULL, 0);
 294         if (!(title = HeapAlloc(GetProcessHeap(), 0, sz * sizeof(WCHAR))))
 295         {
 296             ret = MMSYSERR_NOMEM;
 297             goto done;
 298         }
 299         MultiByteToWideChar(CP_ACP, 0, pafmtc->pszTitle, -1, title, sz);
 300     }
 301     afcw.pszTitle  = title;
 302     if (pafmtc->pszName)
 303     {
 304         sz = MultiByteToWideChar(CP_ACP, 0, pafmtc->pszName, -1, NULL, 0);
 305         if (!(name = HeapAlloc(GetProcessHeap(), 0, sz * sizeof(WCHAR))))
 306         {
 307             ret = MMSYSERR_NOMEM;
 308             goto done;
 309         }
 310         MultiByteToWideChar(CP_ACP, 0, pafmtc->pszName, -1, name, sz);
 311     }
 312     afcw.pszName   = name;
 313     afcw.cchName   = pafmtc->cchName;
 314     afcw.fdwEnum   = pafmtc->fdwEnum;
 315     afcw.pwfxEnum  = pafmtc->pwfxEnum;
 316     afcw.hInstance = pafmtc->hInstance;
 317     if (pafmtc->pszTemplateName)
 318     {
 319         sz = MultiByteToWideChar(CP_ACP, 0, pafmtc->pszTemplateName, -1, NULL, 0);
 320         if (!(templ = HeapAlloc(GetProcessHeap(), 0, sz * sizeof(WCHAR))))
 321         {
 322             ret = MMSYSERR_NOMEM;
 323             goto done;
 324         }
 325         MultiByteToWideChar(CP_ACP, 0, pafmtc->pszTemplateName, -1, templ, sz);
 326     }
 327     afcw.pszTemplateName = templ;
 328     /* FIXME: hook procs not supported yet */
 329     if (pafmtc->pfnHook)
 330     {
 331         FIXME("Unsupported hook procs\n");
 332         ret = MMSYSERR_NOTSUPPORTED;
 333         goto done;
 334     }
 335     ret = acmFormatChooseW(&afcw);
 336     if (ret == MMSYSERR_NOERROR)
 337     {
 338         WideCharToMultiByte(CP_ACP, 0, afcw.szFormatTag, -1, pafmtc->szFormatTag, sizeof(pafmtc->szFormatTag),
 339                             NULL, NULL);
 340         WideCharToMultiByte(CP_ACP, 0, afcw.szFormat, -1, pafmtc->szFormat, sizeof(pafmtc->szFormat),
 341                             NULL, NULL);
 342         if (pafmtc->pszName)
 343             WideCharToMultiByte(CP_ACP, 0, afcw.pszName, -1, pafmtc->pszName, pafmtc->cchName, NULL, NULL);
 344     }
 345 done:
 346     HeapFree(GetProcessHeap(), 0, title);
 347     HeapFree(GetProcessHeap(), 0, name);
 348     HeapFree(GetProcessHeap(), 0, templ);
 349     return ret;
 350 }
 351
 352 /***********************************************************************
 353  *           acmFormatChooseW (MSACM32.@)
 354  */
 355 MMRESULT WINAPI acmFormatChooseW(PACMFORMATCHOOSEW pafmtc)
 356 {
 357     if (pafmtc->fdwStyle & ACMFORMATCHOOSE_STYLEF_ENABLETEMPLATEHANDLE)
 358         return DialogBoxIndirectParamW(MSACM_hInstance32, (LPCDLGTEMPLATEW)pafmtc->hInstance,
 359                                        pafmtc->hwndOwner, FormatChooseDlgProc, (LPARAM)pafmtc);
 360
 361     if (pafmtc->fdwStyle & ACMFORMATCHOOSE_STYLEF_ENABLETEMPLATE)
 362         return DialogBoxParamW(pafmtc->hInstance, pafmtc->pszTemplateName,
 363                                pafmtc->hwndOwner, FormatChooseDlgProc, (LPARAM)pafmtc);
 364
 365     return DialogBoxParamW(MSACM_hInstance32, MAKEINTRESOURCEW(DLG_ACMFORMATCHOOSE_ID),
 366                            pafmtc->hwndOwner, FormatChooseDlgProc, (LPARAM)pafmtc);
 367 }
 368
 369 /***********************************************************************
 370  *           acmFormatDetailsA (MSACM32.@)
 371  */
 372 MMRESULT WINAPI acmFormatDetailsA(HACMDRIVER had, PACMFORMATDETAILSA pafd,
 373                                   DWORD fdwDetails)
 374 {
 375     ACMFORMATDETAILSW   afdw;
 376     MMRESULT            mmr;
 377
 378     memset(&afdw, 0, sizeof(afdw));
 379     afdw.cbStruct = sizeof(afdw);
 380     afdw.dwFormatIndex = pafd->dwFormatIndex;
 381     afdw.dwFormatTag = pafd->dwFormatTag;
 382     afdw.pwfx = pafd->pwfx;
 383     afdw.cbwfx = pafd->cbwfx;
 384
 385     mmr = acmFormatDetailsW(had, &afdw, fdwDetails);
 386     if (mmr == MMSYSERR_NOERROR) {
 387         pafd->dwFormatTag = afdw.dwFormatTag;
 388         pafd->fdwSupport = afdw.fdwSupport;
 389         WideCharToMultiByte( CP_ACP, 0, afdw.szFormat, -1,
 390                              pafd->szFormat, sizeof(pafd->szFormat), NULL, NULL );
 391     }
 392     return mmr;
 393 }
 394
 395 /***********************************************************************
 396  *           acmFormatDetailsW (MSACM32.@)
 397  */
 398 MMRESULT WINAPI acmFormatDetailsW(HACMDRIVER had, PACMFORMATDETAILSW pafd, DWORD fdwDetails)
 399 {
 400     MMRESULT                    mmr;
 401     static const WCHAR          fmt1[] = {'%','d',' ','H','z',0};
 402     static const WCHAR          fmt2[] = {';',' ','%','d',' ','b','i','t','s',0};
 403     ACMFORMATTAGDETAILSA        aftd;
 404
 405     TRACE("(%p, %p, %d)\n", had, pafd, fdwDetails);
 406
 407     memset(&aftd, 0, sizeof(aftd));
 408     aftd.cbStruct = sizeof(aftd);
 409
 410     if (pafd->cbStruct < sizeof(*pafd)) return MMSYSERR_INVALPARAM;
 411
 412     switch (fdwDetails) {
 413     case ACM_FORMATDETAILSF_FORMAT:
 414         if (pafd->dwFormatTag != pafd->pwfx->wFormatTag) {
 415             mmr = MMSYSERR_INVALPARAM;
 416             break;
 417         }
 418         if (had == NULL) {
 419             PWINE_ACMDRIVERID           padid;
 420
 421             mmr = ACMERR_NOTPOSSIBLE;
 422             for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
 423                 /* should check for codec only */
 424                 if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) &&
 425                     acmDriverOpen(&had, (HACMDRIVERID)padid, 0) == 0) {
 426                     mmr = MSACM_Message(had, ACMDM_FORMAT_DETAILS, (LPARAM)pafd, fdwDetails);
 427                     acmDriverClose(had, 0);
 428                     if (mmr == MMSYSERR_NOERROR) break;
 429                 }
 430             }
 431         } else {
 432             mmr = MSACM_Message(had, ACMDM_FORMAT_DETAILS, (LPARAM)pafd, fdwDetails);
 433         }
 434         break;
 435     case ACM_FORMATDETAILSF_INDEX:
 436         /* should check pafd->dwFormatIndex < aftd->cStandardFormats */
 437         mmr = MSACM_Message(had, ACMDM_FORMAT_DETAILS, (LPARAM)pafd, fdwDetails);
 438         break;
 439     default:
 440         WARN("Unknown fdwDetails %08x\n", fdwDetails);
 441         mmr = MMSYSERR_INVALFLAG;
 442         break;
 443     }
 444
 445     if (mmr == MMSYSERR_NOERROR && pafd->szFormat[0] == 0) {
 446         wsprintfW(pafd->szFormat, fmt1, pafd->pwfx->nSamplesPerSec);
 447         if (pafd->pwfx->wBitsPerSample) {
 448             wsprintfW(pafd->szFormat + lstrlenW(pafd->szFormat), fmt2,
 449                       pafd->pwfx->wBitsPerSample);
 450         }
 451         MultiByteToWideChar( CP_ACP, 0, (pafd->pwfx->nChannels == 1) ? "; Mono" : "; Stereo", -1,
 452                              pafd->szFormat + strlenW(pafd->szFormat),
 453                              sizeof(pafd->szFormat)/sizeof(WCHAR) - strlenW(pafd->szFormat) );
 454     }
 455
 456     TRACE("=> %d\n", mmr);
 457     return mmr;
 458 }
 459
 460 struct MSACM_FormatEnumWtoA_Instance {
 461     PACMFORMATDETAILSA pafda;
 462     DWORD_PTR          dwInstance;
 463     ACMFORMATENUMCBA   fnCallback;
 464 };
 465
 466 static BOOL CALLBACK MSACM_FormatEnumCallbackWtoA(HACMDRIVERID hadid,
 467                                                   PACMFORMATDETAILSW pafdw,
 468                                                   DWORD_PTR dwInstance,
 469                                                   DWORD fdwSupport)
 470 {
 471     struct MSACM_FormatEnumWtoA_Instance* pafei;
 472
 473     pafei = (struct MSACM_FormatEnumWtoA_Instance*)dwInstance;
 474
 475     pafei->pafda->dwFormatIndex = pafdw->dwFormatIndex;
 476     pafei->pafda->dwFormatTag = pafdw->dwFormatTag;
 477     pafei->pafda->fdwSupport = pafdw->fdwSupport;
 478     WideCharToMultiByte( CP_ACP, 0, pafdw->szFormat, -1,
 479                          pafei->pafda->szFormat, sizeof(pafei->pafda->szFormat), NULL, NULL );
 480
 481     return (pafei->fnCallback)(hadid, pafei->pafda,
 482                                pafei->dwInstance, fdwSupport);
 483 }
 484
 485 /***********************************************************************
 486  *           acmFormatEnumA (MSACM32.@)
 487  */
 488 MMRESULT WINAPI acmFormatEnumA(HACMDRIVER had, PACMFORMATDETAILSA pafda,
 489                                ACMFORMATENUMCBA fnCallback,
 490                                DWORD_PTR dwInstance, DWORD fdwEnum)
 491 {
 492     ACMFORMATDETAILSW           afdw;
 493     struct MSACM_FormatEnumWtoA_Instance afei;
 494
 495     if (!pafda)
 496         return MMSYSERR_INVALPARAM;
 497
 498     if (pafda->cbStruct < sizeof(*pafda))
 499         return MMSYSERR_INVALPARAM;
 500
 501     memset(&afdw, 0, sizeof(afdw));
 502     afdw.cbStruct = sizeof(afdw);
 503     afdw.dwFormatIndex = pafda->dwFormatIndex;
 504     afdw.dwFormatTag = pafda->dwFormatTag;
 505     afdw.pwfx = pafda->pwfx;
 506     afdw.cbwfx = pafda->cbwfx;
 507
 508     afei.pafda = pafda;
 509     afei.dwInstance = dwInstance;
 510     afei.fnCallback = fnCallback;
 511
 512     return acmFormatEnumW(had, &afdw, MSACM_FormatEnumCallbackWtoA,
 513                           (DWORD_PTR)&afei, fdwEnum);
 514 }
 515
 516 /***********************************************************************
 517  *           acmFormatEnumW (MSACM32.@)
 518  */
 519 static BOOL MSACM_FormatEnumHelper(PWINE_ACMDRIVERID padid, HACMDRIVER had,
 520                                    PACMFORMATDETAILSW pafd, PWAVEFORMATEX pwfxRef,
 521                                    ACMFORMATENUMCBW fnCallback,
 522                                    DWORD_PTR dwInstance, DWORD fdwEnum)
 523 {
 524     ACMFORMATTAGDETAILSW        aftd;
 525     unsigned int                        i, j;
 526
 527     if (fdwEnum & ACM_FORMATENUMF_SUGGEST) {
 528         HDRVR hdrvr;
 529         ACMDRVFORMATSUGGEST adfs;
 530         pafd->dwFormatIndex = 0;
 531         memset(&aftd, 0, sizeof(aftd));
 532         aftd.cbStruct = sizeof(aftd);
 533         memset(&adfs, 0, sizeof(adfs));
 534         adfs.cbStruct = sizeof(adfs);
 535
 536         for (i = 0; i < padid->cFormatTags; i++) {
 537             aftd.dwFormatTag = i;
 538             pafd->dwFormatTag = aftd.dwFormatTag;
 539             pafd->pwfx->wFormatTag = pafd->dwFormatTag;
 540
 541             if (acmFormatTagDetailsW(had, &aftd, ACM_FORMATTAGDETAILSF_INDEX) != MMSYSERR_NOERROR)
 542                 continue;
 543
 544             adfs.cbwfxSrc = aftd.cbFormatSize;
 545             adfs.cbwfxDst = aftd.cbFormatSize;
 546             adfs.pwfxSrc = pwfxRef;
 547             adfs.pwfxDst = pafd->pwfx;
 548             pafd->fdwSupport = padid->fdwSupport;
 549
 550             if ((fdwEnum & ACM_FORMATENUMF_WFORMATTAG) &&
 551                 aftd.dwFormatTag != pwfxRef->wFormatTag)
 552                 continue;
 553
 554             if ((fdwEnum & ACM_FORMATENUMF_HARDWARE) &&
 555                 !(pafd->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_HARDWARE))
 556                 continue;
 557
 558             hdrvr = OpenDriver(padid->pszFileName,0,0);
 559             SendDriverMessage(hdrvr,ACMDM_FORMAT_SUGGEST,(LPARAM)&adfs,(fdwEnum & 0x000000FFL));
 560
 561             if (acmFormatDetailsW(had, pafd, ACM_FORMATDETAILSF_FORMAT) != MMSYSERR_NOERROR)
 562                 continue;
 563
 564             pafd->cbwfx = sizeof(*(pafd->pwfx));
 565
 566             if (!(fnCallback)((HACMDRIVERID)padid, pafd, dwInstance, padid->fdwSupport))
 567                 return FALSE;
 568         }
 569     } else {
 570         for (i = 0; i < padid->cFormatTags; i++) {
 571             memset(&aftd, 0, sizeof(aftd));
 572             aftd.cbStruct = sizeof(aftd);
 573             aftd.dwFormatTagIndex = i;
 574             if (acmFormatTagDetailsW(had, &aftd, ACM_FORMATTAGDETAILSF_INDEX) != MMSYSERR_NOERROR)
 575                 continue;
 576
 577             if ((fdwEnum & ACM_FORMATENUMF_WFORMATTAG) && aftd.dwFormatTag != pwfxRef->wFormatTag)
 578                 continue;
 579
 580             for (j = 0; j < aftd.cStandardFormats; j++) {
 581                 pafd->dwFormatIndex = j;
 582                 pafd->dwFormatTag = aftd.dwFormatTag;
 583                 if (acmFormatDetailsW(had, pafd, ACM_FORMATDETAILSF_INDEX) != MMSYSERR_NOERROR)
 584                     continue;
 585
 586                 if ((fdwEnum & ACM_FORMATENUMF_NCHANNELS) &&
 587                     pafd->pwfx->nChannels != pwfxRef->nChannels)
 588                     continue;
 589                 if ((fdwEnum & ACM_FORMATENUMF_NSAMPLESPERSEC) &&
 590                     pafd->pwfx->nSamplesPerSec != pwfxRef->nSamplesPerSec)
 591                     continue;
 592                 if ((fdwEnum & ACM_FORMATENUMF_WBITSPERSAMPLE) &&
 593                     pafd->pwfx->wBitsPerSample != pwfxRef->wBitsPerSample)
 594                     continue;
 595                 if ((fdwEnum & ACM_FORMATENUMF_HARDWARE) &&
 596                     !(pafd->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_HARDWARE))
 597                     continue;
 598
 599             /* more checks to be done on fdwEnum */
 600
 601                 if (!(fnCallback)((HACMDRIVERID)padid, pafd, dwInstance, padid->fdwSupport))
 602                     return FALSE;
 603             }
 604         /* the "formats" used by the filters are also reported */
 605         }
 606     }
 607     return TRUE;
 608 }
 609
 610 /**********************************************************************/
 611
 612 MMRESULT WINAPI acmFormatEnumW(HACMDRIVER had, PACMFORMATDETAILSW pafd,
 613                                ACMFORMATENUMCBW fnCallback,
 614                                DWORD_PTR dwInstance, DWORD fdwEnum)
 615 {
 616     PWINE_ACMDRIVERID           padid;
 617     WAVEFORMATEX                wfxRef;
 618     BOOL                        ret;
 619
 620     TRACE("(%p, %p, %p, %ld, %d)\n",
 621           had, pafd, fnCallback, dwInstance, fdwEnum);
 622
 623     if (!pafd)
 624         return MMSYSERR_INVALPARAM;
 625
 626     if (pafd->cbStruct < sizeof(*pafd))
 627         return MMSYSERR_INVALPARAM;
 628
 629     if (fdwEnum & (ACM_FORMATENUMF_WFORMATTAG|ACM_FORMATENUMF_NCHANNELS|
 630                    ACM_FORMATENUMF_NSAMPLESPERSEC|ACM_FORMATENUMF_WBITSPERSAMPLE|
 631                    ACM_FORMATENUMF_CONVERT|ACM_FORMATENUMF_SUGGEST))
 632         wfxRef = *pafd->pwfx;
 633
 634     if ((fdwEnum & ACM_FORMATENUMF_HARDWARE) &&
 635         !(fdwEnum & (ACM_FORMATENUMF_INPUT|ACM_FORMATENUMF_OUTPUT)))
 636         return MMSYSERR_INVALPARAM;
 637
 638     if ((fdwEnum & ACM_FORMATENUMF_WFORMATTAG) &&
 639         (pafd->dwFormatTag != pafd->pwfx->wFormatTag))
 640         return MMSYSERR_INVALPARAM;
 641
 642     if (fdwEnum & (ACM_FORMATENUMF_CONVERT|ACM_FORMATENUMF_INPUT|ACM_FORMATENUMF_OUTPUT))
 643         FIXME("Unsupported fdwEnum values %08x\n", fdwEnum);
 644
 645     if (had) {
 646         HACMDRIVERID    hadid;
 647
 648         if (acmDriverID((HACMOBJ)had, &hadid, 0) != MMSYSERR_NOERROR)
 649             return MMSYSERR_INVALHANDLE;
 650         MSACM_FormatEnumHelper(MSACM_GetDriverID(hadid), had, pafd, &wfxRef,
 651                                fnCallback, dwInstance, fdwEnum);
 652         return MMSYSERR_NOERROR;
 653     }
 654     for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
 655             /* should check for codec only */
 656             if ((padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) ||
 657                 acmDriverOpen(&had, (HACMDRIVERID)padid, 0) != MMSYSERR_NOERROR)
 658                 continue;
 659             ret = MSACM_FormatEnumHelper(padid, had, pafd, &wfxRef,
 660                                          fnCallback, dwInstance, fdwEnum);
 661             acmDriverClose(had, 0);
 662             if (!ret) break;
 663     }
 664     return MMSYSERR_NOERROR;
 665 }
 666
 667 /***********************************************************************
 668  *           acmFormatSuggest (MSACM32.@)
 669  */
 670 MMRESULT WINAPI acmFormatSuggest(HACMDRIVER had, PWAVEFORMATEX pwfxSrc,
 671                                  PWAVEFORMATEX pwfxDst, DWORD cbwfxDst, DWORD fdwSuggest)
 672 {
 673     ACMDRVFORMATSUGGEST adfg;
 674     MMRESULT            mmr;
 675
 676     TRACE("(%p, %p, %p, %d, %d)\n",
 677           had, pwfxSrc, pwfxDst, cbwfxDst, fdwSuggest);
 678
 679     if (fdwSuggest & ~(ACM_FORMATSUGGESTF_NCHANNELS|ACM_FORMATSUGGESTF_NSAMPLESPERSEC|
 680                        ACM_FORMATSUGGESTF_WBITSPERSAMPLE|ACM_FORMATSUGGESTF_WFORMATTAG))
 681         return MMSYSERR_INVALFLAG;
 682
 683     adfg.cbStruct = sizeof(adfg);
 684     adfg.fdwSuggest = fdwSuggest;
 685     adfg.pwfxSrc = pwfxSrc;
 686     adfg.cbwfxSrc = (pwfxSrc->wFormatTag == WAVE_FORMAT_PCM) ?
 687         sizeof(WAVEFORMATEX) : (sizeof(WAVEFORMATEX) + pwfxSrc->cbSize);
 688     adfg.pwfxDst = pwfxDst;
 689     adfg.cbwfxDst = cbwfxDst;
 690
 691     if (had == NULL) {
 692         PWINE_ACMDRIVERID       padid;
 693
 694         /* MS doc says: ACM finds the best suggestion.
 695          * Well, first found will be the "best"
 696          */
 697         mmr = ACMERR_NOTPOSSIBLE;
 698         for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
 699             /* should check for codec only */
 700             if ((padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) ||
 701                 acmDriverOpen(&had, (HACMDRIVERID)padid, 0) != MMSYSERR_NOERROR)
 702                 continue;
 703
 704             if (MSACM_Message(had, ACMDM_FORMAT_SUGGEST, (LPARAM)&adfg, 0L) == MMSYSERR_NOERROR) {
 705                 mmr = MMSYSERR_NOERROR;
 706                 break;
 707             }
 708             acmDriverClose(had, 0);
 709         }
 710     } else {
 711         mmr = MSACM_Message(had, ACMDM_FORMAT_SUGGEST, (LPARAM)&adfg, 0L);
 712     }
 713     return mmr;
 714 }
 715
 716 /***********************************************************************
 717  *           acmFormatTagDetailsA (MSACM32.@)
 718  */
 719 MMRESULT WINAPI acmFormatTagDetailsA(HACMDRIVER had, PACMFORMATTAGDETAILSA paftda,
 720                                      DWORD fdwDetails)
 721 {
 722     ACMFORMATTAGDETAILSW        aftdw;
 723     MMRESULT                    mmr;
 724
 725     memset(&aftdw, 0, sizeof(aftdw));
 726     aftdw.cbStruct = sizeof(aftdw);
 727     aftdw.dwFormatTagIndex = paftda->dwFormatTagIndex;
 728     aftdw.dwFormatTag = paftda->dwFormatTag;
 729
 730     mmr = acmFormatTagDetailsW(had, &aftdw, fdwDetails);
 731     if (mmr == MMSYSERR_NOERROR) {
 732         paftda->dwFormatTag = aftdw.dwFormatTag;
 733         paftda->dwFormatTagIndex = aftdw.dwFormatTagIndex;
 734         paftda->cbFormatSize = aftdw.cbFormatSize;
 735         paftda->fdwSupport = aftdw.fdwSupport;
 736         paftda->cStandardFormats = aftdw.cStandardFormats;
 737         WideCharToMultiByte( CP_ACP, 0, aftdw.szFormatTag, -1, paftda->szFormatTag,
 738                              sizeof(paftda->szFormatTag), NULL, NULL );
 739     }
 740     return mmr;
 741 }
 742
 743 /***********************************************************************
 744  *           acmFormatTagDetailsW (MSACM32.@)
 745  */
 746 MMRESULT WINAPI acmFormatTagDetailsW(HACMDRIVER had, PACMFORMATTAGDETAILSW paftd,
 747                                      DWORD fdwDetails)
 748 {
 749     PWINE_ACMDRIVERID   padid;
 750     MMRESULT            mmr = ACMERR_NOTPOSSIBLE;
 751
 752     TRACE("(%p, %p, %d)\n", had, paftd, fdwDetails);
 753
 754     if (fdwDetails & ~(ACM_FORMATTAGDETAILSF_FORMATTAG|ACM_FORMATTAGDETAILSF_INDEX|
 755                        ACM_FORMATTAGDETAILSF_LARGESTSIZE))
 756         return MMSYSERR_INVALFLAG;
 757
 758     switch (fdwDetails) {
 759     case ACM_FORMATTAGDETAILSF_FORMATTAG:
 760         if (had == NULL) {
 761             for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
 762                 /* should check for codec only */
 763                 if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) &&
 764                     MSACM_FindFormatTagInCache(padid, paftd->dwFormatTag, NULL) &&
 765                     acmDriverOpen(&had, (HACMDRIVERID)padid, 0) == 0) {
 766                     mmr = MSACM_Message(had, ACMDM_FORMATTAG_DETAILS, (LPARAM)paftd, fdwDetails);
 767                     acmDriverClose(had, 0);
 768                     if (mmr == MMSYSERR_NOERROR) break;
 769                 }
 770             }
 771         } else {
 772             PWINE_ACMDRIVER     pad = MSACM_GetDriver(had);
 773
 774             if (pad && MSACM_FindFormatTagInCache(pad->obj.pACMDriverID, paftd->dwFormatTag, NULL))
 775                 mmr = MSACM_Message(had, ACMDM_FORMATTAG_DETAILS, (LPARAM)paftd, fdwDetails);
 776         }
 777         break;
 778
 779     case ACM_FORMATTAGDETAILSF_INDEX:
 780         if (had != NULL) {
 781             PWINE_ACMDRIVER     pad = MSACM_GetDriver(had);
 782
 783             if (pad && paftd->dwFormatTagIndex < pad->obj.pACMDriverID->cFormatTags)
 784                 mmr = MSACM_Message(had, ACMDM_FORMATTAG_DETAILS, (LPARAM)paftd, fdwDetails);
 785         }
 786         break;
 787
 788     case ACM_FORMATTAGDETAILSF_LARGESTSIZE:
 789         if (had == NULL) {
 790             ACMFORMATTAGDETAILSW        tmp;
 791             DWORD                       ft = paftd->dwFormatTag;
 792
 793             for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
 794                 /* should check for codec only */
 795                 if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) &&
 796                     acmDriverOpen(&had, (HACMDRIVERID)padid, 0) == 0) {
 797
 798                     memset(&tmp, 0, sizeof(tmp));
 799                     tmp.cbStruct = sizeof(tmp);
 800                     tmp.dwFormatTag = ft;
 801
 802                     if (MSACM_Message(had, ACMDM_FORMATTAG_DETAILS,
 803                                       (LPARAM)&tmp, fdwDetails) == MMSYSERR_NOERROR) {
 804                         if (mmr == ACMERR_NOTPOSSIBLE ||
 805                             paftd->cbFormatSize < tmp.cbFormatSize) {
 806                             *paftd = tmp;
 807                             mmr = MMSYSERR_NOERROR;
 808                         }
 809                     }
 810                     acmDriverClose(had, 0);
 811                 }
 812             }
 813         } else {
 814             mmr = MSACM_Message(had, ACMDM_FORMATTAG_DETAILS, (LPARAM)paftd, fdwDetails);
 815         }
 816         break;
 817
 818     default:
 819         WARN("Unsupported fdwDetails=%08x\n", fdwDetails);
 820         mmr = MMSYSERR_ERROR;
 821     }
 822
 823     if (mmr == MMSYSERR_NOERROR &&
 824         paftd->dwFormatTag == WAVE_FORMAT_PCM && paftd->szFormatTag[0] == 0)
 825         MultiByteToWideChar( CP_ACP, 0, "PCM", -1, paftd->szFormatTag,
 826                              sizeof(paftd->szFormatTag)/sizeof(WCHAR) );
 827
 828     return mmr;
 829 }
 830
 831 struct MSACM_FormatTagEnumWtoA_Instance {
 832     PACMFORMATTAGDETAILSA paftda;
 833     DWORD_PTR             dwInstance;
 834     ACMFORMATTAGENUMCBA   fnCallback;
 835 };
 836
 837 static BOOL CALLBACK MSACM_FormatTagEnumCallbackWtoA(HACMDRIVERID hadid,
 838                                                      PACMFORMATTAGDETAILSW paftdw,
 839                                                      DWORD_PTR dwInstance,
 840                                                      DWORD fdwSupport)
 841 {
 842     struct MSACM_FormatTagEnumWtoA_Instance* paftei;
 843
 844     paftei = (struct MSACM_FormatTagEnumWtoA_Instance*)dwInstance;
 845
 846     paftei->paftda->dwFormatTagIndex = paftdw->dwFormatTagIndex;
 847     paftei->paftda->dwFormatTag = paftdw->dwFormatTag;
 848     paftei->paftda->cbFormatSize = paftdw->cbFormatSize;
 849     paftei->paftda->fdwSupport = paftdw->fdwSupport;
 850     paftei->paftda->cStandardFormats = paftdw->cStandardFormats;
 851     WideCharToMultiByte( CP_ACP, 0, paftdw->szFormatTag, -1, paftei->paftda->szFormatTag,
 852                          sizeof(paftei->paftda->szFormatTag), NULL, NULL );
 853
 854     return (paftei->fnCallback)(hadid, paftei->paftda,
 855                                 paftei->dwInstance, fdwSupport);
 856 }
 857
 858 /***********************************************************************
 859  *           acmFormatTagEnumA (MSACM32.@)
 860  */
 861 MMRESULT WINAPI acmFormatTagEnumA(HACMDRIVER had, PACMFORMATTAGDETAILSA paftda,
 862                                   ACMFORMATTAGENUMCBA fnCallback,
 863                                   DWORD_PTR dwInstance, DWORD fdwEnum)
 864 {
 865     ACMFORMATTAGDETAILSW        aftdw;
 866     struct MSACM_FormatTagEnumWtoA_Instance aftei;
 867
 868     if (!paftda)
 869         return MMSYSERR_INVALPARAM;
 870
 871     if (paftda->cbStruct < sizeof(*paftda))
 872         return MMSYSERR_INVALPARAM;
 873
 874     if (fdwEnum != 0)
 875         return MMSYSERR_INVALFLAG;
 876
 877     memset(&aftdw, 0, sizeof(aftdw));
 878     aftdw.cbStruct = sizeof(aftdw);
 879     aftdw.dwFormatTagIndex = paftda->dwFormatTagIndex;
 880     aftdw.dwFormatTag = paftda->dwFormatTag;
 881
 882     aftei.paftda = paftda;
 883     aftei.dwInstance = dwInstance;
 884     aftei.fnCallback = fnCallback;
 885
 886     return acmFormatTagEnumW(had, &aftdw, MSACM_FormatTagEnumCallbackWtoA,
 887                              (DWORD_PTR)&aftei, fdwEnum);
 888 }
 889
 890 /***********************************************************************
 891  *           acmFormatTagEnumW (MSACM32.@)
 892  */
 893 MMRESULT WINAPI acmFormatTagEnumW(HACMDRIVER had, PACMFORMATTAGDETAILSW paftd,
 894                                   ACMFORMATTAGENUMCBW fnCallback,
 895                                   DWORD_PTR dwInstance, DWORD fdwEnum)
 896 {
 897     PWINE_ACMDRIVERID           padid;
 898     unsigned int                        i;
 899     BOOL                        bPcmDone = FALSE;
 900
 901     TRACE("(%p, %p, %p, %ld, %d)\n",
 902           had, paftd, fnCallback, dwInstance, fdwEnum);
 903
 904     if (!paftd)
 905         return MMSYSERR_INVALPARAM;
 906
 907     if (paftd->cbStruct < sizeof(*paftd))
 908         return MMSYSERR_INVALPARAM;
 909
 910     if (fdwEnum != 0)
 911         return MMSYSERR_INVALFLAG;
 912
 913     /* (WS) MSDN info page says that if had != 0, then we should find
 914      * the specific driver to get its tags from. Therefore I'm removing
 915      * the FIXME call and adding a search block below. It also seems
 916      * that the lack of this functionality was the responsible for
 917      * codecs to be multiply and incorrectly listed.
 918      */
 919
 920     /* if (had) FIXME("had != NULL, not supported\n"); */
 921
 922     if (had) {
 923
 924        if (acmDriverID((HACMOBJ)had, (HACMDRIVERID *)&padid, 0) != MMSYSERR_NOERROR)
 925           return MMSYSERR_INVALHANDLE;
 926
 927        for (i = 0; i < padid->cFormatTags; i++) {
 928           paftd->dwFormatTagIndex = i;
 929           if (MSACM_Message(had, ACMDM_FORMATTAG_DETAILS,
 930           (LPARAM)paftd, ACM_FORMATTAGDETAILSF_INDEX) == MMSYSERR_NOERROR) {
 931              if (paftd->dwFormatTag == WAVE_FORMAT_PCM) {
 932                 if (paftd->szFormatTag[0] == 0)
 933                    MultiByteToWideChar( CP_ACP, 0, "PCM", -1, paftd->szFormatTag,
 934                          sizeof(paftd->szFormatTag)/sizeof(WCHAR) );
 935                 /* (WS) I'm preserving this PCM hack since it seems to be
 936                  * correct. Please notice this block was borrowed from
 937                  * below.
 938                  */
 939                 if (bPcmDone) continue;
 940                    bPcmDone = TRUE;
 941              }
 942              if (!(fnCallback)((HACMDRIVERID)padid, paftd, dwInstance, padid->fdwSupport))
 943                 return MMSYSERR_NOERROR;
 944           }
 945        }
 946
 947     }
 948
 949     /* if had==0 then search for the first suitable driver */
 950     else {
 951        for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
 952           /* should check for codec only */
 953           if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) &&
 954              acmDriverOpen(&had, (HACMDRIVERID)padid, 0) == MMSYSERR_NOERROR) {
 955              for (i = 0; i < padid->cFormatTags; i++) {
 956                 paftd->dwFormatTagIndex = i;
 957                 if (MSACM_Message(had, ACMDM_FORMATTAG_DETAILS,
 958                    (LPARAM)paftd, ACM_FORMATTAGDETAILSF_INDEX) == MMSYSERR_NOERROR) {
 959                    if (paftd->dwFormatTag == WAVE_FORMAT_PCM) {
 960                       if (paftd->szFormatTag[0] == 0)
 961                          MultiByteToWideChar( CP_ACP, 0, "PCM", -1, paftd->szFormatTag,
 962                                  sizeof(paftd->szFormatTag)/sizeof(WCHAR) );
 963                       /* FIXME (EPP): I'm not sure this is the correct
 964                        * algorithm (should make more sense to apply the same
 965                        * for all already loaded formats, but this will do
 966                        * for now
 967                        */
 968                       if (bPcmDone) continue;
 969                          bPcmDone = TRUE;
 970                    }
 971                    if (!(fnCallback)((HACMDRIVERID)padid, paftd, dwInstance, padid->fdwSupport)) {
 972                       acmDriverClose(had, 0);
 973                       return MMSYSERR_NOERROR;
 974                    }
 975                 }
 976              }
 977              acmDriverClose(had, 0);
 978           }
 979        }
 980     }
 981     return MMSYSERR_NOERROR;
 982 }