dlls/midimap/midimap.c

   1 /*
   2  * Wine MIDI mapper driver
   3  *
   4  * Copyright    1999, 2000, 2001 Eric Pouech
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  * TODO:
  21  *      notification has to be implemented
  22  *      IDF file loading
  23  */
  24
  25 #include <stdarg.h>
  26 #include <string.h>
  27 #include <stdlib.h>
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "wingdi.h"
  31 #include "winuser.h"
  32 #include "mmddk.h"
  33 #include "winreg.h"
  34 #include "wine/debug.h"
  35
  36 /*
  37  * Here's how Windows stores the midiOut mapping information.
  38  *
  39  * Windows XP form (in HKU) is:
  40  *
  41  * [Software\\Microsoft\\Windows\\CurrentVersion\\Multimedia\\MIDIMap]
  42  * "szPname"="TiMidity port 0"
  43  * (incomplete)
  44  *
  45  * szPname:             name of midiOut device to use.
  46  *
  47  * If szPname isn't defined, we use Windows 2000 form (also in HKU):
  48  *
  49  * [Software\\Microsoft\\Windows\\CurrentVersion\\Multimedia\\MIDIMap] 988836060
  50  * "AutoScheme"=dword:00000000
  51  * "ConfigureCount"=dword:00000004
  52  * "CurrentInstrument"="Wine OSS midi"
  53  * "CurrentScheme"="epp"
  54  * "DriverList"=""
  55  * "UseScheme"=dword:00000000
  56  *
  57  * AutoScheme:          ?
  58  * CurrentInstrument:   name of midiOut device to use when UseScheme is 0. Wine uses an extension
  59  *                      of the form #n to link to n'th midiOut device of the system
  60  * CurrentScheme:       when UseScheme is non null, it's the scheme to use (see below)
  61  * DriverList:          ?
  62  * UseScheme:           trigger for simple/complex mapping
  63  *
  64  * A scheme is defined (in HKLM) as:
  65  *
  66  * [System\\CurrentControlSet\\Control\\MediaProperties\\PrivateProperties\\Midi\\Schemes\\<nameScheme>]
  67  * <nameScheme>:        one key for each defined scheme (system wide)
  68  * under each one of these <nameScheme> keys, there's:
  69  * [...\\<nameScheme>\\<idxDevice>]
  70  * "Channels"="<bitMask>"
  71  * (the default value of this key also refers to the name of the device).
  72  *
  73  * this defines, for each midiOut device (identified by its index in <idxDevice>), which
  74  * channels have to be mapped onto it. The <bitMask> defines the channels (from 0 to 15)
  75  * will be mapped (mapping occurs for channel <ch> if bit <ch> is set in <bitMask>
  76  *
  77  * Further mapping information can also be defined in:
  78  * [System\\CurrentControlSet\\Control\\MediaProperties\\PrivateProperties\\Midi\\Ports\\<nameDevice>\\Instruments\\<idx>]
  79  * "Definition"="<.idf file>"
  80  * "FriendlyName"="#for .idx file#"
  81  * "Port"="<idxPort>"
  82  *
  83  * This last part isn't implemented (.idf file support).
  84  */
  85
  86 WINE_DEFAULT_DEBUG_CHANNEL(midi);
  87 WINE_DECLARE_DEBUG_CHANNEL(winediag);
  88
  89 typedef struct tagMIDIOUTPORT
  90 {
  91     WCHAR               name[MAXPNAMELEN];
  92     int                 loaded;
  93     HMIDIOUT            hMidi;
  94     unsigned short      uDevID;
  95     LPBYTE              lpbPatch;
  96     unsigned int        aChn[16];
  97 } MIDIOUTPORT;
  98
  99 typedef struct tagMIDIMAPDATA
 100 {
 101     struct tagMIDIMAPDATA*      self;
 102     MIDIOUTPORT*        ChannelMap[16];
 103     MIDIOPENDESC        midiDesc;
 104     WORD                wCbFlags;
 105 } MIDIMAPDATA;
 106
 107 static  MIDIOUTPORT*    midiOutPorts;
 108 static  unsigned        numMidiOutPorts;
 109
 110 static  BOOL    MIDIMAP_IsBadData(MIDIMAPDATA* mm)
 111 {
 112     if (!IsBadReadPtr(mm, sizeof(MIDIMAPDATA)) && mm->self == mm)
 113         return FALSE;
 114     TRACE("Bad midimap data (%p)\n", mm);
 115     return TRUE;
 116 }
 117
 118 static BOOL     MIDIMAP_FindPort(const WCHAR* name, unsigned* dev)
 119 {
 120     for (*dev = 0; *dev < numMidiOutPorts; (*dev)++)
 121     {
 122         TRACE("%s\n", wine_dbgstr_w(midiOutPorts[*dev].name));
 123         if (lstrcmpW(midiOutPorts[*dev].name, name) == 0)
 124             return TRUE;
 125     }
 126     /* try the form #nnn */
 127     if (*name == '#' && name[1] >= '0' && name[1] <= '9')
 128     {
 129         const WCHAR*  ptr = name + 1;
 130         *dev = 0;
 131         do
 132         {
 133             *dev = *dev * 10 + *ptr - '0';
 134             ptr++;
 135         } while (*ptr >= '0' && *ptr <= '9');
 136         if (*dev < numMidiOutPorts)
 137             return TRUE;
 138     }
 139     return FALSE;
 140 }
 141
 142 static BOOL     MIDIMAP_LoadSettingsDefault(MIDIMAPDATA* mom, const WCHAR* port)
 143 {
 144     unsigned i, dev = 0;
 145
 146     if (port != NULL && !MIDIMAP_FindPort(port, &dev))
 147     {
 148         ERR("Registry glitch: couldn't find midi out (%s)\n", wine_dbgstr_w(port));
 149         dev = 0;
 150     }
 151
 152     /* this is necessary when no midi out ports are present */
 153     if (dev >= numMidiOutPorts)
 154         return FALSE;
 155     /* sets default */
 156     for (i = 0; i < 16; i++) mom->ChannelMap[i] = &midiOutPorts[dev];
 157
 158     return TRUE;
 159 }
 160
 161 static BOOL     MIDIMAP_LoadSettingsScheme(MIDIMAPDATA* mom, const WCHAR* scheme)
 162 {
 163     HKEY        hSchemesKey, hKey, hPortKey;
 164     unsigned    i, idx, dev;
 165     WCHAR       buffer[256], port[256];
 166     DWORD       type, size, mask;
 167
 168     for (i = 0; i < 16; i++)    mom->ChannelMap[i] = NULL;
 169
 170     if (RegOpenKeyA(HKEY_LOCAL_MACHINE,
 171                     "System\\CurrentControlSet\\Control\\MediaProperties\\PrivateProperties\\Midi\\Schemes",
 172                     &hSchemesKey))
 173     {
 174         return FALSE;
 175     }
 176     if (RegOpenKeyW(hSchemesKey, scheme, &hKey))
 177     {
 178         RegCloseKey(hSchemesKey);
 179         return FALSE;
 180     }
 181
 182     for (idx = 0; !RegEnumKeyW(hKey, idx, buffer, ARRAY_SIZE(buffer)); idx++)
 183     {
 184         if (RegOpenKeyW(hKey, buffer, &hPortKey)) continue;
 185
 186         size = sizeof(port);
 187         if (RegQueryValueExW(hPortKey, NULL, 0, &type, (void*)port, &size)) continue;
 188
 189         if (!MIDIMAP_FindPort(port, &dev)) continue;
 190
 191         size = sizeof(mask);
 192         if (RegQueryValueExA(hPortKey, "Channels", 0, &type, (void*)&mask, &size))
 193             continue;
 194
 195         for (i = 0; i < 16; i++)
 196         {
 197             if (mask & (1 << i))
 198             {
 199                 if (mom->ChannelMap[i])
 200                     ERR("Quirks in registry, channel %u is mapped twice\n", i);
 201                 mom->ChannelMap[i] = &midiOutPorts[dev];
 202             }
 203         }
 204     }
 205
 206     RegCloseKey(hSchemesKey);
 207     RegCloseKey(hKey);
 208
 209     return TRUE;
 210 }
 211
 212 static BOOL     MIDIMAP_LoadSettings(MIDIMAPDATA* mom)
 213 {
 214     HKEY        hKey;
 215     BOOL        ret;
 216
 217     if (RegOpenKeyA(HKEY_CURRENT_USER,
 218                     "Software\\Microsoft\\Windows\\CurrentVersion\\Multimedia\\MIDIMap", &hKey))
 219     {
 220         ret = MIDIMAP_LoadSettingsDefault(mom, NULL);
 221     }
 222     else
 223     {
 224         DWORD   type, size, out;
 225         WCHAR   buffer[256];
 226
 227         size = sizeof(buffer);
 228         if (!RegQueryValueExW(hKey, L"szPname", 0, &type, (void*)buffer, &size))
 229         {
 230             ret = MIDIMAP_LoadSettingsDefault(mom, buffer);
 231         }
 232         else
 233         {
 234             ret = 2;
 235             size = sizeof(out);
 236             if (!RegQueryValueExA(hKey, "UseScheme", 0, &type, (void*)&out, &size) && out)
 237             {
 238                 size = sizeof(buffer);
 239                 if (!RegQueryValueExW(hKey, L"CurrentScheme", 0, &type, (void*)buffer, &size))
 240                 {
 241                     if (!(ret = MIDIMAP_LoadSettingsScheme(mom, buffer)))
 242                         ret = MIDIMAP_LoadSettingsDefault(mom, NULL);
 243                 }
 244                 else
 245                 {
 246                     ERR("Wrong registry: UseScheme is active, but no CurrentScheme found\n");
 247                 }
 248             }
 249             if (ret == 2)
 250             {
 251                 size = sizeof(buffer);
 252                 if (!RegQueryValueExW(hKey, L"CurrentInstrument", 0, &type, (void*)buffer, &size) && *buffer)
 253                 {
 254                     ret = MIDIMAP_LoadSettingsDefault(mom, buffer);
 255                 }
 256                 else
 257                 {
 258                     ret = MIDIMAP_LoadSettingsDefault(mom, NULL);
 259                 }
 260             }
 261         }
 262     }
 263     RegCloseKey(hKey);
 264
 265     if (ret && TRACE_ON(midi))
 266     {
 267         unsigned        i;
 268
 269         for (i = 0; i < 16; i++)
 270         {
 271             TRACE("chnMap[%2d] => %d\n",
 272                   i, mom->ChannelMap[i] ? mom->ChannelMap[i]->uDevID : -1);
 273         }
 274     }
 275     return ret;
 276 }
 277
 278 static void MIDIMAP_NotifyClient(MIDIMAPDATA* mom, WORD wMsg,
 279                                  DWORD_PTR dwParam1, DWORD_PTR dwParam2)
 280 {
 281     DriverCallback(mom->midiDesc.dwCallback, mom->wCbFlags, (HDRVR)mom->midiDesc.hMidi,
 282                    wMsg, mom->midiDesc.dwInstance, dwParam1, dwParam2);
 283 }
 284
 285 static DWORD modOpen(DWORD_PTR *lpdwUser, LPMIDIOPENDESC lpDesc, DWORD dwFlags)
 286 {
 287     MIDIMAPDATA*        mom = HeapAlloc(GetProcessHeap(), 0, sizeof(MIDIMAPDATA));
 288
 289     TRACE("(%p %p %08x)\n", lpdwUser, lpDesc, dwFlags);
 290
 291     if (!mom) return MMSYSERR_NOMEM;
 292     if (!lpDesc) {
 293         HeapFree(GetProcessHeap(), 0, mom);
 294         return MMSYSERR_INVALPARAM;
 295     }
 296
 297     if (MIDIMAP_LoadSettings(mom))
 298     {
 299         UINT chn;
 300         *lpdwUser = (DWORD_PTR)mom;
 301         mom->self = mom;
 302         mom->wCbFlags = HIWORD(dwFlags & CALLBACK_TYPEMASK);
 303         mom->midiDesc = *lpDesc;
 304
 305         for (chn = 0; chn < 16; chn++)
 306         {
 307             if (mom->ChannelMap[chn]->loaded) continue;
 308             if (midiOutOpen(&mom->ChannelMap[chn]->hMidi, mom->ChannelMap[chn]->uDevID,
 309                             0L, 0L, CALLBACK_NULL) == MMSYSERR_NOERROR)
 310                 mom->ChannelMap[chn]->loaded = 1;
 311             else
 312                 mom->ChannelMap[chn]->loaded = -1;
 313             /* FIXME: should load here the IDF midi data... and allow channel and
 314              * patch mappings
 315              */
 316         }
 317         MIDIMAP_NotifyClient(mom, MOM_OPEN, 0L, 0L);
 318         return MMSYSERR_NOERROR;
 319     }
 320     HeapFree(GetProcessHeap(), 0, mom);
 321     return MIDIERR_INVALIDSETUP;
 322 }
 323
 324 static  DWORD   modClose(MIDIMAPDATA* mom)
 325 {
 326     UINT        i;
 327     DWORD       ret = MMSYSERR_NOERROR;
 328
 329     if (MIDIMAP_IsBadData(mom))         return MMSYSERR_ERROR;
 330
 331     for (i = 0; i < 16; i++)
 332     {
 333         DWORD   t;
 334         if (mom->ChannelMap[i] && mom->ChannelMap[i]->loaded > 0)
 335         {
 336             t = midiOutClose(mom->ChannelMap[i]->hMidi);
 337             if (t == MMSYSERR_NOERROR)
 338             {
 339                 mom->ChannelMap[i]->loaded = 0;
 340                 mom->ChannelMap[i]->hMidi = 0;
 341             }
 342             else if (ret == MMSYSERR_NOERROR)
 343                 ret = t;
 344         }
 345     }
 346     if (ret == MMSYSERR_NOERROR) {
 347         MIDIMAP_NotifyClient(mom, MOM_CLOSE, 0L, 0L);
 348         HeapFree(GetProcessHeap(), 0, mom);
 349     }
 350     return ret;
 351 }
 352
 353 static DWORD modLongData(MIDIMAPDATA* mom, LPMIDIHDR lpMidiHdr, DWORD_PTR dwParam2)
 354 {
 355     WORD        chn;
 356     DWORD       ret = MMSYSERR_NOERROR;
 357     MIDIHDR     mh;
 358
 359     if (MIDIMAP_IsBadData(mom))
 360         return MMSYSERR_ERROR;
 361     if (!(lpMidiHdr->dwFlags & MHDR_PREPARED))
 362         return MIDIERR_UNPREPARED;
 363     if (lpMidiHdr->dwFlags & MHDR_INQUEUE)
 364         return MIDIERR_STILLPLAYING;
 365
 366     mh = *lpMidiHdr;
 367     lpMidiHdr->dwFlags &= ~MHDR_DONE;
 368     lpMidiHdr->dwFlags |= MHDR_INQUEUE;
 369     for (chn = 0; chn < 16; chn++)
 370     {
 371         if (mom->ChannelMap[chn] && mom->ChannelMap[chn]->loaded > 0)
 372         {
 373             mh.dwFlags = 0;
 374             midiOutPrepareHeader(mom->ChannelMap[chn]->hMidi, &mh, sizeof(mh));
 375             ret = midiOutLongMsg(mom->ChannelMap[chn]->hMidi, &mh, sizeof(mh));
 376             /* As of 2009, wineXYZ.drv's LongData handlers are synchronous */
 377             if (!ret && !(mh.dwFlags & MHDR_DONE))
 378                 FIXME("wait until MHDR_DONE\n");
 379             midiOutUnprepareHeader(mom->ChannelMap[chn]->hMidi, &mh, sizeof(mh));
 380             if (ret != MMSYSERR_NOERROR) break;
 381         }
 382     }
 383     lpMidiHdr->dwFlags &= ~MHDR_INQUEUE;
 384     lpMidiHdr->dwFlags |= MHDR_DONE;
 385     MIDIMAP_NotifyClient(mom, MOM_DONE, (DWORD_PTR)lpMidiHdr, 0L);
 386     return ret;
 387 }
 388
 389 static DWORD modData(MIDIMAPDATA* mom, DWORD_PTR dwParam)
 390 {
 391     BYTE        lb = LOBYTE(LOWORD(dwParam));
 392     WORD        chn = lb & 0x0F;
 393     DWORD       ret = MMSYSERR_NOERROR;
 394
 395     if (MIDIMAP_IsBadData(mom))
 396         return MMSYSERR_ERROR;
 397
 398     if (!mom->ChannelMap[chn]) return MMSYSERR_NOERROR;
 399
 400     switch (lb & 0xF0)
 401     {
 402     case 0x80:
 403     case 0x90:
 404     case 0xA0:
 405     case 0xB0:
 406     case 0xC0:
 407     case 0xD0:
 408     case 0xE0:
 409         if (mom->ChannelMap[chn]->loaded > 0)
 410         {
 411             /* change channel */
 412             dwParam &= ~0x0F;
 413             dwParam |= mom->ChannelMap[chn]->aChn[chn];
 414
 415             if ((LOBYTE(LOWORD(dwParam)) & 0xF0) == 0xC0 /* program change */ &&
 416                 mom->ChannelMap[chn]->lpbPatch)
 417             {
 418                 BYTE patch = HIBYTE(LOWORD(dwParam));
 419
 420                 /* change patch */
 421                 dwParam &= ~0x0000FF00;
 422                 dwParam |= mom->ChannelMap[chn]->lpbPatch[patch];
 423             }
 424             ret = midiOutShortMsg(mom->ChannelMap[chn]->hMidi, dwParam);
 425         }
 426         break;
 427     case 0xF0:
 428         for (chn = 0; chn < 16; chn++)
 429         {
 430             if (mom->ChannelMap[chn]->loaded > 0)
 431                 ret = midiOutShortMsg(mom->ChannelMap[chn]->hMidi, dwParam);
 432         }
 433         break;
 434     default:
 435         FIXME("ooch %lx\n", dwParam);
 436     }
 437
 438     return ret;
 439 }
 440
 441 static DWORD modPrepare(MIDIMAPDATA* mom, LPMIDIHDR lpMidiHdr, DWORD_PTR dwSize)
 442 {
 443     if (MIDIMAP_IsBadData(mom)) return MMSYSERR_ERROR;
 444     if (dwSize < offsetof(MIDIHDR,dwOffset) || lpMidiHdr == 0 || lpMidiHdr->lpData == 0)
 445         return MMSYSERR_INVALPARAM;
 446     if (lpMidiHdr->dwFlags & MHDR_PREPARED)
 447         return MMSYSERR_NOERROR;
 448
 449     lpMidiHdr->dwFlags |= MHDR_PREPARED;
 450     lpMidiHdr->dwFlags &= ~(MHDR_DONE|MHDR_INQUEUE); /* flags cleared since w2k */
 451     return MMSYSERR_NOERROR;
 452 }
 453
 454 static DWORD modUnprepare(MIDIMAPDATA* mom, LPMIDIHDR lpMidiHdr, DWORD_PTR dwSize)
 455 {
 456     if (MIDIMAP_IsBadData(mom)) return MMSYSERR_ERROR;
 457     if (dwSize < offsetof(MIDIHDR,dwOffset) || lpMidiHdr == 0 || lpMidiHdr->lpData == 0)
 458         return MMSYSERR_INVALPARAM;
 459     if (!(lpMidiHdr->dwFlags & MHDR_PREPARED))
 460         return MMSYSERR_NOERROR;
 461     if (lpMidiHdr->dwFlags & MHDR_INQUEUE)
 462         return MIDIERR_STILLPLAYING;
 463
 464     lpMidiHdr->dwFlags &= ~MHDR_PREPARED;
 465     return MMSYSERR_NOERROR;
 466 }
 467
 468 static DWORD modGetVolume(MIDIMAPDATA* mom, DWORD* lpdwVolume)
 469 {
 470     if (!lpdwVolume) return MMSYSERR_INVALPARAM;
 471     *lpdwVolume = 0xFFFFFFFF; /* tests show this initial value */
 472     return MMSYSERR_NOERROR;
 473 }
 474
 475 static DWORD modSetVolume(MIDIMAPDATA* mom, DWORD dwVolume)
 476 {
 477     /* Native forwards it to some underlying device
 478      * GetVolume returns what was last set here. */
 479     FIXME("stub\n");
 480     return MMSYSERR_NOERROR;
 481 }
 482
 483 static DWORD modGetDevCaps(UINT wDevID, MIDIMAPDATA* mom, LPMIDIOUTCAPSW lpMidiCaps, DWORD_PTR size)
 484 {
 485     static const MIDIOUTCAPSW mappercaps = {
 486         0x00FF, 0x0001, 0x0100, /* Manufacturer and Product ID */
 487         L"Wine midi mapper", MOD_MAPPER, 0, 0, 0xFFFF,
 488         /* Native returns volume caps of underlying device + MIDICAPS_STREAM */
 489         MIDICAPS_VOLUME|MIDICAPS_LRVOLUME
 490     };
 491     if (lpMidiCaps == NULL) return MMSYSERR_INVALPARAM;
 492     if (!numMidiOutPorts) return MMSYSERR_BADDEVICEID;
 493
 494     memcpy(lpMidiCaps, &mappercaps, min(size, sizeof(*lpMidiCaps)));
 495     return MMSYSERR_NOERROR;
 496 }
 497
 498 static  DWORD   modReset(MIDIMAPDATA* mom)
 499 {
 500     WORD        chn;
 501     DWORD       ret = MMSYSERR_NOERROR;
 502
 503     if (MIDIMAP_IsBadData(mom))
 504         return MMSYSERR_ERROR;
 505
 506     for (chn = 0; chn < 16; chn++)
 507     {
 508         if (mom->ChannelMap[chn] && mom->ChannelMap[chn]->loaded > 0)
 509         {
 510             ret = midiOutReset(mom->ChannelMap[chn]->hMidi);
 511             if (ret != MMSYSERR_NOERROR) break;
 512         }
 513     }
 514     return ret;
 515 }
 516
 517 static LRESULT MIDIMAP_drvOpen(void);
 518 static LRESULT MIDIMAP_drvClose(void);
 519
 520 /**************************************************************************
 521  *                              modMessage (MIDIMAP.@)
 522  */
 523 DWORD WINAPI MIDIMAP_modMessage(UINT wDevID, UINT wMsg, DWORD_PTR dwUser,
 524                                 DWORD_PTR dwParam1, DWORD_PTR dwParam2)
 525 {
 526     TRACE("(%u, %04X, %08lX, %08lX, %08lX);\n",
 527           wDevID, wMsg, dwUser, dwParam1, dwParam2);
 528
 529     switch (wMsg)
 530     {
 531     case DRVM_INIT:
 532         return MIDIMAP_drvOpen();
 533     case DRVM_EXIT:
 534         return MIDIMAP_drvClose();
 535     case DRVM_ENABLE:
 536     case DRVM_DISABLE:
 537         /* FIXME: Pretend this is supported */
 538         return 0;
 539
 540     case MODM_OPEN: return modOpen((DWORD_PTR *)dwUser, (LPMIDIOPENDESC)dwParam1, dwParam2);
 541     case MODM_CLOSE:            return modClose         ((MIDIMAPDATA*)dwUser);
 542
 543     case MODM_DATA:             return modData          ((MIDIMAPDATA*)dwUser, dwParam1);
 544     case MODM_LONGDATA:         return modLongData      ((MIDIMAPDATA*)dwUser, (LPMIDIHDR)dwParam1,     dwParam2);
 545     case MODM_PREPARE:          return modPrepare       ((MIDIMAPDATA*)dwUser, (LPMIDIHDR)dwParam1,     dwParam2);
 546     case MODM_UNPREPARE:        return modUnprepare     ((MIDIMAPDATA*)dwUser, (LPMIDIHDR)dwParam1,     dwParam2);
 547     case MODM_RESET:            return modReset         ((MIDIMAPDATA*)dwUser);
 548
 549     case MODM_GETDEVCAPS:       return modGetDevCaps    (wDevID, (MIDIMAPDATA*)dwUser, (LPMIDIOUTCAPSW)dwParam1,dwParam2);
 550     case MODM_GETNUMDEVS:       return 1;
 551     case MODM_GETVOLUME:        return modGetVolume     ((MIDIMAPDATA*)dwUser, (DWORD*)dwParam1);
 552     case MODM_SETVOLUME:        return modSetVolume     ((MIDIMAPDATA*)dwUser, dwParam1);
 553     default:
 554         FIXME("unknown message %d!\n", wMsg);
 555     }
 556     return MMSYSERR_NOTSUPPORTED;
 557 }
 558
 559 /*======================================================================*
 560  *                  Driver part                                         *
 561  *======================================================================*/
 562
 563 /**************************************************************************
 564  *                              MIDIMAP_drvOpen                 [internal]
 565  */
 566 static LRESULT MIDIMAP_drvOpen(void)
 567 {
 568     MIDIOUTCAPSW        moc;
 569     unsigned            dev, i;
 570     BOOL                found_valid_port = FALSE;
 571
 572     if (midiOutPorts)
 573         return 0;
 574
 575     numMidiOutPorts = midiOutGetNumDevs();
 576     midiOutPorts = HeapAlloc(GetProcessHeap(), 0,
 577                              numMidiOutPorts * sizeof(MIDIOUTPORT));
 578     for (dev = 0; dev < numMidiOutPorts; dev++)
 579     {
 580         if (midiOutGetDevCapsW(dev, &moc, sizeof(moc)) == 0L)
 581         {
 582             lstrcpyW(midiOutPorts[dev].name, moc.szPname);
 583             midiOutPorts[dev].loaded = 0;
 584             midiOutPorts[dev].hMidi = 0;
 585             midiOutPorts[dev].uDevID = dev;
 586             midiOutPorts[dev].lpbPatch = NULL;
 587             for (i = 0; i < 16; i++)
 588                 midiOutPorts[dev].aChn[i] = i;
 589             if (wcsncmp(midiOutPorts[dev].name, L"Midi Through", lstrlenW(L"Midi Through")) != 0)
 590                 found_valid_port = TRUE;
 591         }
 592         else
 593         {
 594             midiOutPorts[dev].loaded = -1;
 595         }
 596     }
 597
 598     if (!found_valid_port)
 599         ERR_(winediag)("No software synthesizer midi port found, Midi sound output probably won't work.\n");
 600
 601     return 1;
 602 }
 603
 604 /**************************************************************************
 605  *                              MIDIMAP_drvClose                [internal]
 606  */
 607 static LRESULT MIDIMAP_drvClose(void)
 608 {
 609     if (midiOutPorts)
 610     {
 611         HeapFree(GetProcessHeap(), 0, midiOutPorts);
 612         midiOutPorts = NULL;
 613         return 1;
 614     }
 615     return 0;
 616 }
 617
 618 /**************************************************************************
 619  *                              DriverProc (MIDIMAP.@)
 620  */
 621 LRESULT CALLBACK MIDIMAP_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
 622                                     LPARAM dwParam1, LPARAM dwParam2)
 623 {
 624 /* EPP     TRACE("(%08lX, %04X, %08lX, %08lX, %08lX)\n",  */
 625 /* EPP    dwDevID, hDriv, wMsg, dwParam1, dwParam2); */
 626
 627     switch (wMsg)
 628     {
 629     case DRV_LOAD:              return 1;
 630     case DRV_FREE:              return 1;
 631     case DRV_OPEN:              return 1;
 632     case DRV_CLOSE:             return 1;
 633     case DRV_ENABLE:            return 1;
 634     case DRV_DISABLE:           return 1;
 635     case DRV_QUERYCONFIGURE:    return 1;
 636     case DRV_CONFIGURE:         MessageBoxA(0, "MIDIMAP MultiMedia Driver !", "OSS Driver", MB_OK);     return 1;
 637     case DRV_INSTALL:           return DRVCNF_RESTART;
 638     case DRV_REMOVE:            return DRVCNF_RESTART;
 639     default:
 640         return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
 641     }
 642 }