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