dlls/winmm/winemm.h

   1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
   2
   3 /*****************************************************************************
   4  * Copyright 1998, Luiz Otavio L. Zorzella
   5  *           1999, Eric Pouech
   6  *
   7  * Purpose:   multimedia declarations (internal to WINMM & MMSYSTEM DLLs)
   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  *****************************************************************************
  23  */
  24
  25 #include "mmddk.h"
  26 #include "wownt32.h"
  27
  28 typedef DWORD (WINAPI *MessageProc16)(UINT16 wDevID, UINT16 wMsg, DWORD dwUser, DWORD dwParam1, DWORD dwParam2);
  29 typedef DWORD (WINAPI *MessageProc32)(UINT wDevID, UINT wMsg, DWORD dwUser, DWORD dwParam1, DWORD dwParam2);
  30
  31 typedef enum {
  32     WINMM_MAP_NOMEM,    /* ko, memory problem */
  33     WINMM_MAP_MSGERROR, /* ko, unknown message */
  34     WINMM_MAP_OK,       /* ok, no memory allocated. to be sent to the proc. */
  35     WINMM_MAP_OKMEM,    /* ok, some memory allocated, need to call UnMapMsg. to be sent to the proc. */
  36 } WINMM_MapType;
  37
  38 /* Who said goofy boy ? */
  39 #define WINE_DI_MAGIC   0x900F1B01
  40
  41 typedef struct tagWINE_DRIVER
  42 {
  43     DWORD                       dwMagic;
  44     /* as usual LPWINE_DRIVER == hDriver32 */
  45     DWORD                       dwFlags;
  46     union {
  47         struct {
  48             HMODULE                     hModule;
  49             DRIVERPROC                  lpDrvProc;
  50             DWORD                       dwDriverID;
  51         } d32;
  52         struct {
  53             HDRVR16                     hDriver16;
  54         } d16;
  55     } d;
  56     struct tagWINE_DRIVER*      lpPrevItem;
  57     struct tagWINE_DRIVER*      lpNextItem;
  58 } WINE_DRIVER, *LPWINE_DRIVER;
  59
  60 typedef DWORD   (CALLBACK *WINEMM_msgFunc16)(UINT16, WORD, DWORD, DWORD, DWORD);
  61 typedef DWORD   (CALLBACK *WINEMM_msgFunc32)(UINT  , UINT, DWORD, DWORD, DWORD);
  62
  63 /* for each loaded driver and each known type of driver, this structure contains
  64  * the information needed to access it
  65  */
  66 typedef struct tagWINE_MM_DRIVER_PART {
  67     int                         nIDMin;         /* lower bound of global indexes for this type */
  68     int                         nIDMax;         /* hhigher bound of global indexes for this type */
  69     union {
  70         WINEMM_msgFunc32        fnMessage32;    /* pointer to fonction */
  71         WINEMM_msgFunc16        fnMessage16;
  72     } u;
  73 } WINE_MM_DRIVER_PART;
  74
  75 #define MMDRV_AUX               0
  76 #define MMDRV_MIXER             1
  77 #define MMDRV_MIDIIN            2
  78 #define MMDRV_MIDIOUT           3
  79 #define MMDRV_WAVEIN            4
  80 #define MMDRV_WAVEOUT           5
  81 #define MMDRV_MAX               6
  82
  83 /* each low-level .drv will be associated with an instance of this structure */
  84 typedef struct tagWINE_MM_DRIVER {
  85     HDRVR                       hDriver;
  86     LPSTR                       drvname;        /* name of the driver */
  87     BOOL                        bIs32 : 1,      /* TRUE if 32 bit driver, FALSE for 16 */
  88                                 bIsMapper : 1;  /* TRUE if mapper */
  89     WINE_MM_DRIVER_PART         parts[MMDRV_MAX];/* Information for all known types */
  90 } WINE_MM_DRIVER, *LPWINE_MM_DRIVER;
  91
  92 typedef WINMM_MapType   (*MMDRV_MAPFUNC)(UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
  93
  94 typedef struct tagWINE_MLD {
  95 /* EPP struct tagWINE_MLD*      lpNext; */              /* not used so far */
  96        UINT                     uDeviceID;
  97        UINT                     type;
  98        UINT                     mmdIndex;               /* index to low-level driver in MMDrvs table */
  99        DWORD                    dwDriverInstance;       /* this value is driver related, as opposed to
 100                                                          * opendesc.dwInstance which is client (callback) related */
 101        WORD                     bFrom32;
 102        WORD                     dwFlags;
 103        DWORD                    dwCallback;
 104        DWORD                    dwClientInstance;
 105 } WINE_MLD, *LPWINE_MLD;
 106
 107 typedef struct  {
 108        WINE_MLD                 mld;
 109 } WINE_WAVE, *LPWINE_WAVE;
 110
 111 typedef struct {
 112        WINE_MLD                 mld;
 113        MIDIOPENDESC             mod;                    /* FIXME: should be removed */
 114 } WINE_MIDI, *LPWINE_MIDI;
 115
 116 typedef struct {
 117        WINE_MLD                 mld;
 118 } WINE_MIXER, *LPWINE_MIXER;
 119
 120 #define WINE_MMTHREAD_CREATED   0x4153494C      /* "BSIL" */
 121 #define WINE_MMTHREAD_DELETED   0xDEADDEAD
 122
 123 typedef struct {
 124        DWORD                    dwSignature;            /* 00 "BSIL" when ok, 0xDEADDEAD when being deleted */
 125        DWORD                    dwCounter;              /* 04 > 1 when in mmThread functions */
 126        HANDLE                   hThread;                /* 08 hThread */
 127        DWORD                    dwThreadID;             /* 0C */
 128        FARPROC16                fpThread;               /* 10 address of thread proc (segptr or lin depending on dwFlags) */
 129        DWORD                    dwThreadPmt;            /* 14 parameter to be passed upon thread creation to fpThread */
 130        DWORD                    dwSignalCount;          /* 18 counter used for signaling */
 131        HANDLE                   hEvent;                 /* 1C event */
 132        HANDLE                   hVxD;                   /* 20 return from OpenVxDHandle */
 133        DWORD                    dwStatus;               /* 24 0x00, 0x10, 0x20, 0x30 */
 134        DWORD                    dwFlags;                /* 28 dwFlags upon creation */
 135        HANDLE16                 hTask;                  /* 2C handle to created task */
 136 } WINE_MMTHREAD;
 137
 138 typedef struct tagWINE_MCIDRIVER {
 139         UINT                    wDeviceID;
 140         UINT                    wType;
 141         LPSTR                   lpstrElementName;
 142         LPSTR                   lpstrDeviceType;
 143         LPSTR                   lpstrAlias;
 144         HDRVR                   hDriver;
 145         DRIVERPROC16            driverProc;
 146         DWORD                   dwPrivate;
 147         YIELDPROC               lpfnYieldProc;
 148         DWORD                   dwYieldData;
 149         BOOL                    bIs32;
 150         DWORD                   CreatorThread;
 151         UINT                    uTypeCmdTable;
 152         UINT                    uSpecificCmdTable;
 153         struct tagWINE_MCIDRIVER*lpNext;
 154 } WINE_MCIDRIVER, *LPWINE_MCIDRIVER;
 155
 156 #define WINE_TIMER_IS32 0x80
 157
 158 typedef struct tagWINE_TIMERENTRY {
 159     UINT                        wDelay;
 160     UINT                        wResol;
 161     FARPROC16                   lpFunc;
 162     DWORD                       dwUser;
 163     UINT16                      wFlags;
 164     UINT16                      wTimerID;
 165     UINT                        uCurTime;
 166     struct tagWINE_TIMERENTRY*  lpNext;
 167 } WINE_TIMERENTRY, *LPWINE_TIMERENTRY;
 168
 169 enum mmioProcType {MMIO_PROC_16,MMIO_PROC_32A,MMIO_PROC_32W};
 170
 171 struct IOProcList
 172 {
 173     struct IOProcList*pNext;       /* Next item in linked list */
 174     FOURCC            fourCC;      /* four-character code identifying IOProc */
 175     LPMMIOPROC        pIOProc;     /* pointer to IProc */
 176     enum mmioProcType type;        /* 16, 32A or 32W */
 177     int               count;       /* number of objects linked to it */
 178 };
 179
 180 typedef struct tagWINE_MMIO {
 181     MMIOINFO                    info;
 182     struct tagWINE_MMIO*        lpNext;
 183     struct IOProcList*          ioProc;
 184     BOOL                        bTmpIOProc : 1,
 185                                 bBufferLoaded : 1;
 186     SEGPTR                      segBuffer16;
 187     DWORD                       dwFileSize;
 188 } WINE_MMIO, *LPWINE_MMIO;
 189
 190 typedef struct tagWINE_PLAYSOUND {
 191     BOOL                        bLoop : 1,
 192                                 bAlloc : 1;
 193     LPCWSTR                     pszSound;
 194     HMODULE                     hMod;
 195     DWORD                       fdwSound;
 196     struct tagWINE_PLAYSOUND*   lpNext;
 197 } WINE_PLAYSOUND, *LPWINE_PLAYSOUND;
 198
 199 typedef struct tagWINE_MM_IDATA {
 200     /* winmm part */
 201     HANDLE                      hWinMM32Instance;
 202     HANDLE                      hWinMM16Instance;
 203     HANDLE                      h16Module32;
 204     CRITICAL_SECTION            cs;
 205     /* mm timer part */
 206     HANDLE                      hMMTimer;
 207     DWORD                       mmSysTimeMS;
 208     LPWINE_TIMERENTRY           lpTimerList;
 209     int                         nSizeLpTimers;
 210     LPWINE_TIMERENTRY           lpTimers;
 211     /* mci part */
 212     LPWINE_MCIDRIVER            lpMciDrvs;
 213     /* low level drivers (unused yet) */
 214     /* LPWINE_WAVE              lpWave; */
 215     /* LPWINE_MIDI              lpMidi; */
 216     /* LPWINE_MIXER             lpMixer; */
 217     /* mmio part */
 218     LPWINE_MMIO                 lpMMIO;
 219     /* playsound and sndPlaySound */
 220     WINE_PLAYSOUND*             lpPlaySound;
 221     HANDLE                      psLastEvent;
 222     HANDLE                      psStopEvent;
 223 } WINE_MM_IDATA, *LPWINE_MM_IDATA;
 224
 225 /* function prototypes */
 226
 227 typedef LONG                    (*MCIPROC16)(DWORD, HDRVR16, WORD, DWORD, DWORD);
 228 typedef LONG                    (*MCIPROC)(DWORD, HDRVR, DWORD, DWORD, DWORD);
 229
 230 LPWINE_DRIVER   DRIVER_FindFromHDrvr(HDRVR hDrvr);
 231 BOOL            DRIVER_GetLibName(LPCSTR keyName, LPCSTR sectName, LPSTR buf, int sz);
 232 LPWINE_DRIVER   DRIVER_TryOpenDriver32(LPCSTR fn, LPARAM lParam2);
 233
 234 BOOL            MMDRV_Init(void);
 235 UINT            MMDRV_GetNum(UINT);
 236 LPWINE_MLD      MMDRV_Alloc(UINT size, UINT type, LPHANDLE hndl, DWORD* dwFlags,
 237                             DWORD* dwCallback, DWORD* dwInstance, BOOL bFrom32);
 238 void            MMDRV_Free(HANDLE hndl, LPWINE_MLD mld);
 239 DWORD           MMDRV_Open(LPWINE_MLD mld, UINT wMsg, DWORD dwParam1, DWORD dwParam2);
 240 DWORD           MMDRV_Close(LPWINE_MLD mld, UINT wMsg);
 241 LPWINE_MLD      MMDRV_Get(HANDLE hndl, UINT type, BOOL bCanBeID);
 242 LPWINE_MLD      MMDRV_GetRelated(HANDLE hndl, UINT srcType, BOOL bSrcCanBeID, UINT dstTyped);
 243 DWORD           MMDRV_Message(LPWINE_MLD mld, WORD wMsg, DWORD dwParam1, DWORD dwParam2, BOOL bFrom32);
 244 UINT            MMDRV_PhysicalFeatures(LPWINE_MLD mld, UINT uMsg, DWORD dwParam1, DWORD dwParam2);
 245 BOOL            MMDRV_Is32(unsigned int);
 246
 247 WINE_MCIDRIVER* MCI_GetDriver(UINT16 uDevID);
 248 UINT            MCI_GetDriverFromString(LPCSTR str);
 249 DWORD           MCI_WriteString(LPSTR lpDstStr, DWORD dstSize, LPCSTR lpSrcStr);
 250 const char*     MCI_MessageToString(UINT16 wMsg);
 251 UINT    WINAPI  MCI_DefYieldProc(MCIDEVICEID wDevID, DWORD data);
 252 LRESULT         MCI_CleanUp(LRESULT dwRet, UINT wMsg, DWORD dwParam2, BOOL bIs32);
 253 DWORD           MCI_SendCommand(UINT wDevID, UINT16 wMsg, DWORD dwParam1, DWORD dwParam2, BOOL bFrom32);
 254 DWORD           MCI_SendCommandFrom32(UINT wDevID, UINT16 wMsg, DWORD dwParam1, DWORD dwParam2);
 255 DWORD           MCI_SendCommandFrom16(UINT wDevID, UINT16 wMsg, DWORD dwParam1, DWORD dwParam2);
 256
 257 BOOL            WINMM_CheckForMMSystem(void);
 258
 259 void            MMSYSTEM_MMTIME16to32(LPMMTIME mmt32, const MMTIME16* mmt16);
 260 void            MMSYSTEM_MMTIME32to16(LPMMTIME16 mmt16, const MMTIME* mmt32);
 261
 262 UINT            MMSYSTEM_mixerOpen(LPHMIXER lphMix, UINT uDeviceID, DWORD dwCallback,
 263                                    DWORD dwInstance, DWORD fdwOpen, BOOL bFrom32);
 264 UINT            MMSYSTEM_midiOutOpen(HMIDIOUT* lphMidiOut, UINT uDeviceID, DWORD dwCallback,
 265                                      DWORD dwInstance, DWORD dwFlags, BOOL bFrom32);
 266 UINT            MMSYSTEM_midiInOpen(HMIDIIN* lphMidiIn, UINT uDeviceID, DWORD dwCallback,
 267                                     DWORD dwInstance, DWORD dwFlags, BOOL bFrom32);
 268 MMRESULT        MMSYSTEM_MidiStream_Open(HMIDISTRM* lphMidiStrm, LPUINT lpuDeviceID,
 269                                          DWORD cMidi, DWORD dwCallback,
 270                                          DWORD dwInstance, DWORD fdwOpen, BOOL bFrom32);
 271 UINT            MMSYSTEM_waveOpen(HANDLE* lphndl, UINT uDeviceID, UINT uType,
 272                                   const LPWAVEFORMATEX lpFormat, DWORD dwCallback,
 273                                   DWORD dwInstance, DWORD dwFlags, BOOL bFrom32);
 274
 275 WORD            timeSetEventInternal(UINT wDelay, UINT wResol,
 276                                      FARPROC16 lpFunc, DWORD dwUser, UINT wFlags);
 277
 278 HMMIO           MMIO_Open(LPSTR szFileName, MMIOINFO* refmminfo,
 279                           DWORD dwOpenFlags, enum mmioProcType type);
 280 LPMMIOPROC      MMIO_InstallIOProc(FOURCC fccIOProc, LPMMIOPROC pIOProc,
 281                                    DWORD dwFlags, enum mmioProcType type);
 282 LRESULT         MMIO_SendMessage(HMMIO hmmio, UINT uMessage, LPARAM lParam1,
 283                                  LPARAM lParam2, enum mmioProcType type);
 284 LPWINE_MMIO     MMIO_Get(HMMIO h);
 285
 286 BOOL            MULTIMEDIA_MciInit(void);
 287 BOOL            MULTIMEDIA_PlaySound(const void* pszSound, HMODULE hmod, DWORD fdwSound, BOOL bUnicode);
 288
 289 void            TIME_MMTimeStart(void);
 290 void            TIME_MMTimeStop(void);
 291
 292 /* temporary definitions */
 293 WINMM_MapType DRIVER_MapMsg32To16(WORD wMsg, DWORD* lParam1, DWORD* lParam2);
 294 WINMM_MapType DRIVER_UnMapMsg32To16(WORD wMsg, DWORD lParam1, DWORD lParam2);
 295 WINMM_MapType   MCI_MapMsg16To32A  (WORD uDevType, WORD wMsg,                DWORD* lParam);
 296 WINMM_MapType   MCI_UnMapMsg16To32A(WORD uDevType, WORD wMsg,                DWORD  lParam);
 297 WINMM_MapType   MCI_MapMsg32ATo16  (WORD uDevType, WORD wMsg, DWORD dwFlags, DWORD* lParam);
 298 WINMM_MapType   MCI_UnMapMsg32ATo16(WORD uDevType, WORD wMsg, DWORD dwFlags, DWORD  lParam);
 299 void    MMDRV_Callback(LPWINE_MLD mld, HDRVR hDev, UINT uMsg, DWORD dwParam1, DWORD dwParam2);
 300
 301 WINMM_MapType   MMDRV_Aux_Map16To32A  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 302 WINMM_MapType   MMDRV_Aux_UnMap16To32A  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 303 WINMM_MapType   MMDRV_Aux_Map32ATo16  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 304 WINMM_MapType   MMDRV_Aux_UnMap32ATo16  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 305 void    CALLBACK MMDRV_Aux_Callback(HDRVR hDev, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2);
 306
 307 WINMM_MapType   MMDRV_Mixer_Map16To32A  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 308 WINMM_MapType   MMDRV_Mixer_UnMap16To32A  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 309 WINMM_MapType   MMDRV_Mixer_Map32ATo16  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 310 WINMM_MapType   MMDRV_Mixer_UnMap32ATo16  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 311 void    CALLBACK MMDRV_Mixer_Callback(HDRVR hDev, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2);
 312
 313 WINMM_MapType   MMDRV_MidiIn_Map16To32A  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 314 WINMM_MapType   MMDRV_MidiIn_UnMap16To32A  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 315 WINMM_MapType   MMDRV_MidiIn_Map32ATo16  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 316 WINMM_MapType   MMDRV_MidiIn_UnMap32ATo16  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 317 void    CALLBACK MMDRV_MidiIn_Callback(HDRVR hDev, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2);
 318
 319 WINMM_MapType   MMDRV_MidiOut_Map16To32A  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 320 WINMM_MapType   MMDRV_MidiOut_UnMap16To32A  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 321 WINMM_MapType   MMDRV_MidiOut_Map32ATo16  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 322 WINMM_MapType   MMDRV_MidiOut_UnMap32ATo16  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 323 void    CALLBACK MMDRV_MidiOut_Callback(HDRVR hDev, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2);
 324
 325 WINMM_MapType   MMDRV_WaveIn_Map16To32A  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 326 WINMM_MapType   MMDRV_WaveIn_UnMap16To32A  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 327 WINMM_MapType   MMDRV_WaveIn_Map32ATo16  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 328 WINMM_MapType   MMDRV_WaveIn_UnMap32ATo16  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 329 void    CALLBACK MMDRV_WaveIn_Callback(HDRVR hDev, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2);
 330
 331 WINMM_MapType   MMDRV_WaveOut_Map16To32A  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 332 WINMM_MapType   MMDRV_WaveOut_UnMap16To32A  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 333 WINMM_MapType   MMDRV_WaveOut_Map32ATo16  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 334 WINMM_MapType   MMDRV_WaveOut_UnMap32ATo16  (UINT wMsg, LPDWORD lpdwUser, LPDWORD lpParam1, LPDWORD lpParam2);
 335 void    CALLBACK MMDRV_WaveOut_Callback(HDRVR hDev, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2);
 336
 337 BOOL    MMDRV_GetDescription16(const char* fname, char* buf, int buflen);
 338
 339 /* Global variables */
 340 extern LPWINE_MM_IDATA  WINMM_IData;
 341
 342 /* pointers to 16 bit functions (if sibling MMSYSTEM.DLL is loaded
 343  * NULL otherwise
 344  */
 345 extern LRESULT          (*pFnMmioCallback16)(SEGPTR,LPMMIOINFO,UINT,LPARAM,LPARAM);
 346 extern WINE_MMTHREAD*   (*pFnGetMMThread16)(HANDLE16);
 347
 348 /* HANDLE16 -> HANDLE conversions */
 349 #define HDRVR_32(h16)           ((HDRVR)(ULONG_PTR)(h16))
 350 #define HMIDI_32(h16)           ((HMIDI)(ULONG_PTR)(h16))
 351 #define HMIDIIN_32(h16)         ((HMIDIIN)(ULONG_PTR)(h16))
 352 #define HMIDIOUT_32(h16)        ((HMIDIOUT)(ULONG_PTR)(h16))
 353 #define HMIDISTRM_32(h16)       ((HMIDISTRM)(ULONG_PTR)(h16))
 354 #define HMIXER_32(h16)          ((HMIXER)(ULONG_PTR)(h16))
 355 #define HMIXEROBJ_32(h16)       ((HMIXEROBJ)(ULONG_PTR)(h16))
 356 #define HMMIO_32(h16)           ((HMMIO)(ULONG_PTR)(h16))
 357 #define HWAVE_32(h16)           ((HWAVE)(ULONG_PTR)(h16))
 358 #define HWAVEIN_32(h16)         ((HWAVEIN)(ULONG_PTR)(h16))
 359 #define HWAVEOUT_32(h16)        ((HWAVEOUT)(ULONG_PTR)(h16))
 360
 361 /* HANDLE -> HANDLE16 conversions */
 362 #define HDRVR_16(h32)           (LOWORD(h32))
 363 #define HMIDI_16(h32)           (LOWORD(h32))
 364 #define HMIDIIN_16(h32)         (LOWORD(h32))
 365 #define HMIDIOUT_16(h32)        (LOWORD(h32))
 366 #define HMIDISTRM_16(h32)       (LOWORD(h32))
 367 #define HMIXER_16(h32)          (LOWORD(h32))
 368 #define HMIXEROBJ_16(h32)       (LOWORD(h32))
 369 #define HMMIO_16(h32)           (LOWORD(h32))
 370 #define HWAVE_16(h32)           (LOWORD(h32))
 371 #define HWAVEIN_16(h32)         (LOWORD(h32))
 372 #define HWAVEOUT_16(h32)        (LOWORD(h32))