Sweden-Number/dlls/winmm/message16.c

/*
 * MMSYSTEM MCI and low level mapping functions
 *
 * Copyright 1999 Eric Pouech
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <assert.h>
#include "wine/winbase16.h"
#include "windef.h"
#include "winbase.h"
#include "wownt32.h"
#include "winemm.h"
#include "winemm16.h"
#include "digitalv.h"
#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(winmm);

/******************************************************************
 *		WINMM_MMTIME16to32
 */
static void WINMM_MMTIME16to32(LPMMTIME mmt32, const MMTIME16* mmt16)
{
    mmt32->wType = mmt16->wType;
    /* layout of rest is the same for 32/16,
     * Note: mmt16->u is 2 bytes smaller than mmt32->u, which has padding
     */
    memcpy(&(mmt32->u), &(mmt16->u), sizeof(mmt16->u));
}


/**************************************************************************
 * 				MMDRV_Callback			[internal]
 */
static  void	MMDRV_Callback(LPWINE_MLD mld, HDRVR hDev, UINT uMsg, DWORD_PTR dwParam1, DWORD_PTR dwParam2)
{
    TRACE("CB (*%08lx)(%p %08x %08lx %08lx %08lx\n",
	  mld->dwCallback, hDev, uMsg, mld->dwClientInstance, dwParam1, dwParam2);

    if ((mld->dwFlags & DCB_TYPEMASK) == DCB_FUNCTION)
    {
        WORD args[8];
	/* 16 bit func, call it */
	TRACE("Function (16 bit) !\n");

        args[7] = HDRVR_16(hDev);
        args[6] = uMsg;
        args[5] = HIWORD(mld->dwClientInstance);
        args[4] = LOWORD(mld->dwClientInstance);
        args[3] = HIWORD(dwParam1);
        args[2] = LOWORD(dwParam1);
        args[1] = HIWORD(dwParam2);
        args[0] = LOWORD(dwParam2);
        WOWCallback16Ex( mld->dwCallback, WCB16_PASCAL, sizeof(args), args, NULL );
    } else {
	DriverCallback(mld->dwCallback, mld->dwFlags, hDev, uMsg,
		       mld->dwClientInstance, dwParam1, dwParam2);
    }
}

/* =================================
 *       A U X    M A P P E R S
 * ================================= */

/**************************************************************************
 * 				MMDRV_Aux_Map32WTo16		[internal]
 */
static  WINMM_MapType	MMDRV_Aux_Map32WTo16  (UINT wMsg, DWORD_PTR *lpdwUser, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2)
{
    return WINMM_MAP_MSGERROR;
}

/**************************************************************************
 * 				MMDRV_Aux_UnMap32WTo16		[internal]
 */
static  WINMM_MapType	MMDRV_Aux_UnMap32WTo16(UINT wMsg, DWORD_PTR *lpdwUser, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2, MMRESULT fn_ret)
{
#if 0
 case AUXDM_GETDEVCAPS:
    lpCaps->wMid = ac16.wMid;
    lpCaps->wPid = ac16.wPid;
    lpCaps->vDriverVersion = ac16.vDriverVersion;
    strcpy(lpCaps->szPname, ac16.szPname);
    lpCaps->wTechnology = ac16.wTechnology;
    lpCaps->dwSupport = ac16.dwSupport;
#endif
    return WINMM_MAP_MSGERROR;
}

/**************************************************************************
 * 				MMDRV_Aux_Callback		[internal]
 */
static  void	CALLBACK MMDRV_Aux_Callback(HDRVR hDev, UINT uMsg, DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2)
{
    LPWINE_MLD	mld = (LPWINE_MLD)dwInstance;

    FIXME("NIY\n");
    MMDRV_Callback(mld, hDev, uMsg, dwParam1, dwParam2);
}

/* =================================
 *     M I X E R  M A P P E R S
 * ================================= */

/**************************************************************************
 * 				MMSYSTDRV_Mixer_Map16To32W		[internal]
 */
static  MMSYSTEM_MapType	MMSYSTDRV_Mixer_Map16To32W  (UINT wMsg, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2)
{
    return MMSYSTEM_MAP_MSGERROR;
}

/**************************************************************************
 * 				MMSYSTDRV_Mixer_UnMap16To32W	[internal]
 */
static  MMSYSTEM_MapType	MMSYSTDRV_Mixer_UnMap16To32W(UINT wMsg, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2, MMRESULT fn_ret)
{
#if 0
    MIXERCAPSA	micA;
    UINT	ret = mixerGetDevCapsA(devid, &micA, sizeof(micA));

    if (ret == MMSYSERR_NOERROR) {
	mixcaps->wMid           = micA.wMid;
	mixcaps->wPid           = micA.wPid;
	mixcaps->vDriverVersion = micA.vDriverVersion;
	strcpy(mixcaps->szPname, micA.szPname);
	mixcaps->fdwSupport     = micA.fdwSupport;
	mixcaps->cDestinations  = micA.cDestinations;
    }
    return ret;
#endif
    return MMSYSTEM_MAP_MSGERROR;
}

/**************************************************************************
 * 				MMDRV_Mixer_Map32WTo16		[internal]
 */
static  WINMM_MapType	MMDRV_Mixer_Map32WTo16  (UINT wMsg, DWORD_PTR *lpdwUser, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2)
{
    return WINMM_MAP_MSGERROR;
}

/**************************************************************************
 * 				MMDRV_Mixer_UnMap32WTo16	[internal]
 */
static  WINMM_MapType	MMDRV_Mixer_UnMap32WTo16(UINT wMsg, DWORD_PTR *lpdwUser, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2, MMRESULT fn_ret)
{
    return WINMM_MAP_MSGERROR;
}

/**************************************************************************
 * 				MMDRV_Mixer_Callback		[internal]
 */
static  void	CALLBACK MMDRV_Mixer_Callback(HDRVR hDev, UINT uMsg, DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2)
{
    LPWINE_MLD	mld = (LPWINE_MLD)dwInstance;

    FIXME("NIY\n");
    MMDRV_Callback(mld, hDev, uMsg, dwParam1, dwParam2);
}

/**************************************************************************
 * 				MMSYSTDRV_Mixer_MapCB
 */
static  void	                MMSYSTDRV_Mixer_MapCB(DWORD uMsg, DWORD_PTR* dwUser, DWORD_PTR* dwParam1, DWORD_PTR* dwParam2)
{
    FIXME("NIY\n");
}

/* =================================
 *   M I D I  I N    M A P P E R S
 * ================================= */

/**************************************************************************
 * 				MMSYSTDRV_MidiIn_Map16To32W		[internal]
 */
static  MMSYSTEM_MapType	MMSYSTDRV_MidiIn_Map16To32W  (UINT wMsg, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2)
{
    return MMSYSTEM_MAP_MSGERROR;
}

/**************************************************************************
 * 				MMSYSTDRV_MidiIn_UnMap16To32W	[internal]
 */
static  MMSYSTEM_MapType	MMSYSTDRV_MidiIn_UnMap16To32W(UINT wMsg, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2, MMRESULT fn_ret)
{
    return MMSYSTEM_MAP_MSGERROR;
}

/**************************************************************************
 * 				MMDRV_MidiIn_Map32WTo16		[internal]
 */
static  WINMM_MapType	MMDRV_MidiIn_Map32WTo16  (UINT wMsg, DWORD_PTR *lpdwUser, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2)
{
    return WINMM_MAP_MSGERROR;
}

/**************************************************************************
 * 				MMDRV_MidiIn_UnMap32WTo16	[internal]
 */
static  WINMM_MapType	MMDRV_MidiIn_UnMap32WTo16(UINT wMsg, DWORD_PTR *lpdwUser, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2, MMRESULT fn_ret)
{
    return WINMM_MAP_MSGERROR;
}

/**************************************************************************
 * 				MMDRV_MidiIn_Callback		[internal]
 */
static  void	CALLBACK MMDRV_MidiIn_Callback(HDRVR hDev, UINT uMsg, DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2)
{
    LPWINE_MLD	mld = (LPWINE_MLD)dwInstance;

    switch (uMsg) {
    case MIM_OPEN:
    case MIM_CLOSE:
	/* dwParam1 & dwParam2 are supposed to be 0, nothing to do */

    case MIM_DATA:
    case MIM_MOREDATA:
    case MIM_ERROR:
	/* dwParam1 & dwParam2 are data, nothing to do */
	break;
    case MIM_LONGDATA:
    case MIM_LONGERROR:
	/* dwParam1 points to a MidiHdr, work to be done !!! */
	if (!MMDRV_Is32(mld->mmdIndex)) {
	    /* initial map is: 32 => 16 */
	    LPMIDIHDR		mh16 = MapSL(dwParam1);
	    LPMIDIHDR		mh32 = *(LPMIDIHDR*)((LPSTR)mh16 - sizeof(LPMIDIHDR));

	    dwParam1 = (DWORD)mh32;
	    mh32->dwFlags = mh16->dwFlags;
	    mh32->dwBytesRecorded = mh16->dwBytesRecorded;
	    if (mh32->reserved >= sizeof(MIDIHDR))
		mh32->dwOffset = mh16->dwOffset;
	}
	/* else { 32 => 32, nothing to do, same struct is kept }*/
	break;
    /* case MOM_POSITIONCB: */
    default:
	ERR("Unknown msg %u\n", uMsg);
    }

    MMDRV_Callback(mld, hDev, uMsg, dwParam1, dwParam2);
}

/**************************************************************************
 * 				MMSYSTDRV_MidiIn_MapCB		[internal]
 */
static  void            	MMSYSTDRV_MidiIn_MapCB(UINT uMsg, DWORD_PTR* dwUser, DWORD_PTR* dwParam1, DWORD_PTR* dwParam2)
{
    switch (uMsg) {
    case MIM_OPEN:
    case MIM_CLOSE:
	/* dwParam1 & dwParam2 are supposed to be 0, nothing to do */

    case MIM_DATA:
    case MIM_MOREDATA:
    case MIM_ERROR:
	/* dwParam1 & dwParam2 are data, nothing to do */
	break;
    case MIM_LONGDATA:
    case MIM_LONGERROR:
        {
	    LPMIDIHDR		mh32 = (LPMIDIHDR)(*dwParam1);
	    SEGPTR		segmh16 = *(SEGPTR*)((LPSTR)mh32 - sizeof(LPMIDIHDR));
	    LPMIDIHDR		mh16 = MapSL(segmh16);

	    *dwParam1 = (DWORD)segmh16;
	    mh16->dwFlags = mh32->dwFlags;
	    mh16->dwBytesRecorded = mh32->dwBytesRecorded;
	    if (mh16->reserved >= sizeof(MIDIHDR))
		mh16->dwOffset = mh32->dwOffset;
	}
	break;
    default:
	ERR("Unknown msg %u\n", uMsg);
    }
}

/* =================================
 *   M I D I  O U T  M A P P E R S
 * ================================= */

/**************************************************************************
 * 				MMSYSTDRV_MidiOut_Map16To32W	[internal]
 */
static MMSYSTEM_MapType	MMSYSTDRV_MidiOut_Map16To32W  (UINT wMsg, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2)
{
    MMSYSTEM_MapType	ret = MMSYSTEM_MAP_MSGERROR;

    switch (wMsg) {
    case MODM_GETNUMDEVS:
    case MODM_DATA:
    case MODM_RESET:
    case MODM_SETVOLUME:
	ret = MMSYSTEM_MAP_OK;
	break;

    case MODM_OPEN:
    case MODM_CLOSE:
    case MODM_GETVOLUME:
	FIXME("Shouldn't be used: the corresponding 16 bit functions use the 32 bit interface\n");
	break;

    case MODM_GETDEVCAPS:
	{
            LPMIDIOUTCAPSW	moc32 = HeapAlloc(GetProcessHeap(), 0, sizeof(LPMIDIOUTCAPS16) + sizeof(MIDIOUTCAPSW));
	    LPMIDIOUTCAPS16	moc16 = MapSL(*lpParam1);

	    if (moc32) {
		*(LPMIDIOUTCAPS16*)moc32 = moc16;
		moc32 = (LPMIDIOUTCAPSW)((LPSTR)moc32 + sizeof(LPMIDIOUTCAPS16));
		*lpParam1 = (DWORD)moc32;
		*lpParam2 = sizeof(MIDIOUTCAPSW);

		ret = MMSYSTEM_MAP_OKMEM;
	    } else {
		ret = MMSYSTEM_MAP_NOMEM;
	    }
	}
	break;
    case MODM_PREPARE:
	{
	    LPMIDIHDR		mh32 = HeapAlloc(GetProcessHeap(), 0, sizeof(LPMIDIHDR) + sizeof(MIDIHDR));
	    LPMIDIHDR		mh16 = MapSL(*lpParam1);

	    if (mh32) {
		*(LPMIDIHDR*)mh32 = (LPMIDIHDR)*lpParam1;
		mh32 = (LPMIDIHDR)((LPSTR)mh32 + sizeof(LPMIDIHDR));
		mh32->lpData = MapSL((SEGPTR)mh16->lpData);
		mh32->dwBufferLength = mh16->dwBufferLength;
		mh32->dwBytesRecorded = mh16->dwBytesRecorded;
		mh32->dwUser = mh16->dwUser;
		mh32->dwFlags = mh16->dwFlags;
		/* FIXME: nothing on mh32->lpNext */
		/* could link the mh32->lpNext at this level for memory house keeping */
		mh32->dwOffset = (*lpParam2 >= sizeof(MIDIHDR)) ? mh16->dwOffset : 0;
		mh16->lpNext = mh32; /* for reuse in unprepare and write */
		/* store size of passed MIDIHDR?? structure to know if dwOffset is available or not */
		mh16->reserved = *lpParam2;
		*lpParam1 = (DWORD)mh32;
		*lpParam2 = sizeof(MIDIHDR);

		ret = MMSYSTEM_MAP_OKMEM;
	    } else {
		ret = MMSYSTEM_MAP_NOMEM;
	    }
	}
	break;
    case MODM_UNPREPARE:
    case MODM_LONGDATA:
	{
	    LPMIDIHDR		mh16 = MapSL(*lpParam1);
	    LPMIDIHDR		mh32 = mh16->lpNext;

	    *lpParam1 = (DWORD)mh32;
	    *lpParam2 = sizeof(MIDIHDR);
	    /* dwBufferLength can be reduced between prepare & write */
	    if (wMsg == MODM_LONGDATA && mh32->dwBufferLength < mh16->dwBufferLength) {
		ERR("Size of buffer has been increased from %d to %d, keeping initial value\n",
		    mh32->dwBufferLength, mh16->dwBufferLength);
	    } else
                mh32->dwBufferLength = mh16->dwBufferLength;
	    ret = MMSYSTEM_MAP_OKMEM;
	}
	break;

    case MODM_CACHEPATCHES:
    case MODM_CACHEDRUMPATCHES:
    default:
	FIXME("NIY: no conversion yet for %u [%lx,%lx]\n", wMsg, *lpParam1, *lpParam2);
	break;
    }
    return ret;
}

/**************************************************************************
 * 				MMSYSTDRV_MidiOut_UnMap16To32W	[internal]
 */
static  MMSYSTEM_MapType	MMSYSTDRV_MidiOut_UnMap16To32W(UINT wMsg, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2, MMRESULT fn_ret)
{
    MMSYSTEM_MapType	ret = MMSYSTEM_MAP_MSGERROR;

    switch (wMsg) {
    case MODM_GETNUMDEVS:
    case MODM_DATA:
    case MODM_RESET:
    case MODM_SETVOLUME:
	ret = MMSYSTEM_MAP_OK;
	break;

    case MODM_OPEN:
    case MODM_CLOSE:
    case MODM_GETVOLUME:
	FIXME("Shouldn't be used: the corresponding 16 bit functions use the 32 bit interface\n");
	break;

    case MODM_GETDEVCAPS:
	{
            LPMIDIOUTCAPSW		moc32 = (LPMIDIOUTCAPSW)(*lpParam1);
	    LPMIDIOUTCAPS16		moc16 = *(LPMIDIOUTCAPS16*)((LPSTR)moc32 - sizeof(LPMIDIOUTCAPS16));

	    moc16->wMid			= moc32->wMid;
	    moc16->wPid			= moc32->wPid;
	    moc16->vDriverVersion	= moc32->vDriverVersion;
            WideCharToMultiByte( CP_ACP, 0, moc32->szPname, -1, moc16->szPname,
                                 sizeof(moc16->szPname), NULL, NULL );
	    moc16->wTechnology		= moc32->wTechnology;
	    moc16->wVoices		= moc32->wVoices;
	    moc16->wNotes		= moc32->wNotes;
	    moc16->wChannelMask		= moc32->wChannelMask;
	    moc16->dwSupport		= moc32->dwSupport;
	    HeapFree(GetProcessHeap(), 0, (LPSTR)moc32 - sizeof(LPMIDIOUTCAPS16));
	    ret = MMSYSTEM_MAP_OK;
	}
	break;
    case MODM_PREPARE:
    case MODM_UNPREPARE:
    case MODM_LONGDATA:
	{
	    LPMIDIHDR		mh32 = (LPMIDIHDR)(*lpParam1);
	    LPMIDIHDR		mh16 = MapSL(*(SEGPTR*)((LPSTR)mh32 - sizeof(LPMIDIHDR)));

	    assert(mh16->lpNext == mh32);
	    mh16->dwBufferLength = mh32->dwBufferLength;
	    mh16->dwBytesRecorded = mh32->dwBytesRecorded;
	    mh16->dwUser = mh32->dwUser;
	    mh16->dwFlags = mh32->dwFlags;
	    if (mh16->reserved >= sizeof(MIDIHDR))
		mh16->dwOffset = mh32->dwOffset;

	    if (wMsg == MODM_UNPREPARE && fn_ret == MMSYSERR_NOERROR) {
		HeapFree(GetProcessHeap(), 0, (LPSTR)mh32 - sizeof(LPMIDIHDR));
		mh16->lpNext = 0;
	    }
	    ret = MMSYSTEM_MAP_OK;
	}
	break;

    case MODM_CACHEPATCHES:
    case MODM_CACHEDRUMPATCHES:
    default:
	FIXME("NIY: no conversion yet for %u [%lx,%lx]\n", wMsg, *lpParam1, *lpParam2);
	break;
    }
    return ret;
}

/**************************************************************************
 * 				MMDRV_MidiOut_Map32WTo16	[internal]
 */
static  WINMM_MapType	MMDRV_MidiOut_Map32WTo16  (UINT wMsg, DWORD_PTR *lpdwUser, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2)
{
    WINMM_MapType	ret = WINMM_MAP_MSGERROR;

    switch (wMsg) {
    case MODM_CLOSE:
    case MODM_GETNUMDEVS:
    case MODM_DATA:
    case MODM_RESET:
    case MODM_SETVOLUME:
	ret = WINMM_MAP_OK;
	break;
    case MODM_GETDEVCAPS:
	{
            LPMIDIOUTCAPSW moc32 = (LPMIDIOUTCAPSW)*lpParam1;
            LPSTR ptr = HeapAlloc( GetProcessHeap(), 0, sizeof(LPMIDIOUTCAPSW)+sizeof(MIDIOUTCAPS16));

	    if (ptr) {
		*(LPMIDIOUTCAPSW*)ptr = moc32;
		ret = WINMM_MAP_OKMEM;
	    } else {
		ret = WINMM_MAP_NOMEM;
	    }
	    *lpParam1 = (DWORD)MapLS(ptr) + sizeof(LPMIDIOUTCAPSW);
	    *lpParam2 = sizeof(MIDIOUTCAPS16);
	}
	break;
    case MODM_PREPARE:
	{
	    LPMIDIHDR		mh32 = (LPMIDIHDR)*lpParam1;
	    LPMIDIHDR		mh16;
	    LPVOID ptr = HeapAlloc( GetProcessHeap(), 0,
                                    sizeof(LPMIDIHDR) + sizeof(MIDIHDR) + mh32->dwBufferLength);

	    if (ptr) {
		*(LPMIDIHDR*)ptr = mh32;
		mh16 = (LPMIDIHDR)((LPSTR)ptr + sizeof(LPMIDIHDR));
		*lpParam1 = MapLS(mh16);
		mh16->lpData = (LPSTR)*lpParam1 + sizeof(MIDIHDR);
		/* data will be copied on WODM_WRITE */
		mh16->dwBufferLength = mh32->dwBufferLength;
		mh16->dwBytesRecorded = mh32->dwBytesRecorded;
		mh16->dwUser = mh32->dwUser;
		mh16->dwFlags = mh32->dwFlags;
		/* FIXME: nothing on mh32->lpNext */
		/* could link the mh32->lpNext at this level for memory house keeping */
		mh16->dwOffset = (*lpParam2 >= sizeof(MIDIHDR)) ? mh32->dwOffset : 0;

		mh32->lpNext = mh16; /* for reuse in unprepare and write */
		mh32->reserved = *lpParam2;

		TRACE("mh16=%08lx mh16->lpData=%p mh32->buflen=%u mh32->lpData=%p\n",
		      *lpParam1, mh16->lpData, mh32->dwBufferLength, mh32->lpData);
		*lpParam2 = sizeof(MIDIHDR);

		ret = WINMM_MAP_OKMEM;
	    } else {
		ret = WINMM_MAP_NOMEM;
	    }
	}
	break;
    case MODM_UNPREPARE:
    case MODM_LONGDATA:
	{
	    LPMIDIHDR		mh32 = (LPMIDIHDR)(*lpParam1);
	    LPMIDIHDR		mh16 = mh32->lpNext;
	    LPSTR		ptr = (LPSTR)mh16 - sizeof(LPMIDIHDR);

	    assert(*(LPMIDIHDR*)ptr == mh32);

	    if (wMsg == MODM_LONGDATA)
		memcpy((LPSTR)mh16 + sizeof(MIDIHDR), mh32->lpData, mh32->dwBufferLength);

	    *lpParam1 = MapLS(mh16);
	    *lpParam2 = sizeof(MIDIHDR);
	    TRACE("mh16=%08lx mh16->lpData=%p mh32->buflen=%u mh32->lpData=%p\n",
                  *lpParam1, mh16->lpData, mh32->dwBufferLength, mh32->lpData);

	    /* dwBufferLength can be reduced between prepare & write */
	    if (wMsg == MODM_LONGDATA && mh16->dwBufferLength < mh32->dwBufferLength) {
		ERR("Size of buffer has been increased from %d to %d, keeping initial value\n",
		    mh16->dwBufferLength, mh32->dwBufferLength);
	    } else
                mh16->dwBufferLength = mh32->dwBufferLength;
	    ret = WINMM_MAP_OKMEM;
	}
	break;
    case MODM_OPEN:
	{
            LPMIDIOPENDESC		mod32 = (LPMIDIOPENDESC)*lpParam1;
	    LPVOID			ptr;
	    LPMIDIOPENDESC16		mod16;

	    /* allocated data are mapped as follows:
	       LPMIDIOPENDESC	ptr to orig lParam1
	       DWORD		orig dwUser, which is a pointer to DWORD:driver dwInstance
	       DWORD		dwUser passed to driver
	       MIDIOPENDESC16	mod16: openDesc passed to driver
	       MIDIOPENSTRMID	cIds
	    */
            ptr = HeapAlloc( GetProcessHeap(), 0,
                             sizeof(LPMIDIOPENDESC) + 2*sizeof(DWORD) + sizeof(MIDIOPENDESC16) +
                             mod32->cIds ? (mod32->cIds - 1) * sizeof(MIDIOPENSTRMID) : 0);

	    if (ptr) {
                SEGPTR segptr = MapLS(ptr);
		*(LPMIDIOPENDESC*)ptr = mod32;
		*(LPDWORD)((char*)ptr + sizeof(LPMIDIOPENDESC)) = *lpdwUser;
		mod16 = (LPMIDIOPENDESC16)((LPSTR)ptr + sizeof(LPMIDIOPENDESC) + 2*sizeof(DWORD));

		mod16->hMidi = HMIDI_16(mod32->hMidi);
		mod16->dwCallback = mod32->dwCallback;
		mod16->dwInstance = mod32->dwInstance;
		mod16->dnDevNode = mod32->dnDevNode;
		mod16->cIds = mod32->cIds;
		memcpy(&mod16->rgIds, &mod32->rgIds, mod32->cIds * sizeof(MIDIOPENSTRMID));

		*lpParam1 = (DWORD)segptr + sizeof(LPMIDIOPENDESC) + 2*sizeof(DWORD);
		*lpdwUser = (DWORD)segptr + sizeof(LPMIDIOPENDESC) + sizeof(DWORD);

		ret = WINMM_MAP_OKMEM;
	    } else {
		ret = WINMM_MAP_NOMEM;
	    }
	}
	break;
    case MODM_GETVOLUME:
    case MODM_CACHEPATCHES:
    case MODM_CACHEDRUMPATCHES:
    default:
	FIXME("NIY: no conversion yet for %u [%lx,%lx]\n", wMsg, *lpParam1, *lpParam2);
	break;
    }
    return ret;
}

/**************************************************************************
 * 				MMDRV_MidiOut_UnMap32WTo16	[internal]
 */
static  WINMM_MapType	MMDRV_MidiOut_UnMap32WTo16(UINT wMsg, DWORD_PTR *lpdwUser, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2, MMRESULT fn_ret)
{
    WINMM_MapType	ret = WINMM_MAP_MSGERROR;

    switch (wMsg) {
    case MODM_CLOSE:
    case MODM_GETNUMDEVS:
    case MODM_DATA:
    case MODM_RESET:
    case MODM_SETVOLUME:
	ret = WINMM_MAP_OK;
	break;
    case MODM_GETDEVCAPS:
	{
	    LPMIDIOUTCAPS16		moc16 = MapSL(*lpParam1);
	    LPSTR			ptr   = (LPSTR)moc16 - sizeof(LPMIDIOUTCAPSW);
            LPMIDIOUTCAPSW		moc32 = *(LPMIDIOUTCAPSW*)ptr;

	    moc32->wMid			= moc16->wMid;
	    moc32->wPid			= moc16->wPid;
	    moc32->vDriverVersion	= moc16->vDriverVersion;
            WideCharToMultiByte( CP_ACP, 0, moc32->szPname, -1, moc16->szPname,
                                 sizeof(moc16->szPname), NULL, NULL );
	    moc32->wTechnology		= moc16->wTechnology;
	    moc32->wVoices		= moc16->wVoices;
	    moc32->wNotes		= moc16->wNotes;
	    moc32->wChannelMask		= moc16->wChannelMask;
	    moc32->dwSupport		= moc16->dwSupport;
            UnMapLS( *lpParam1 );
            HeapFree( GetProcessHeap(), 0, ptr );
	    ret = WINMM_MAP_OK;
	}
	break;
    case MODM_PREPARE:
    case MODM_UNPREPARE:
    case MODM_LONGDATA:
	{
	    LPMIDIHDR		mh16 = MapSL(*lpParam1);
	    LPSTR		ptr = (LPSTR)mh16 - sizeof(LPMIDIHDR);
	    LPMIDIHDR		mh32 = *(LPMIDIHDR*)ptr;

	    assert(mh32->lpNext == mh16);
            UnMapLS( *lpParam1 );
	    mh32->dwBytesRecorded = mh16->dwBytesRecorded;
	    mh32->dwUser = mh16->dwUser;
	    mh32->dwFlags = mh16->dwFlags;

	    if (wMsg == MODM_UNPREPARE && fn_ret == MMSYSERR_NOERROR) {
                HeapFree( GetProcessHeap(), 0, ptr );
		mh32->lpNext = 0;
	    }
	    ret = WINMM_MAP_OK;
	}
	break;
    case MODM_OPEN:
	{
	    LPMIDIOPENDESC16		mod16 = MapSL(*lpParam1);
	    LPSTR			ptr   = (LPSTR)mod16 - sizeof(LPMIDIOPENDESC) - 2*sizeof(DWORD);
            UnMapLS( *lpParam1 );
	    **(DWORD**)(ptr + sizeof(LPMIDIOPENDESC)) = *(LPDWORD)(ptr + sizeof(LPMIDIOPENDESC) + sizeof(DWORD));

            HeapFree( GetProcessHeap(), 0, ptr );
	    ret = WINMM_MAP_OK;
	}
	break;
    case MODM_GETVOLUME:
    case MODM_CACHEPATCHES:
    case MODM_CACHEDRUMPATCHES:
    default:
	FIXME("NIY: no conversion yet for %u [%lx,%lx]\n", wMsg, *lpParam1, *lpParam2);
	break;
    }
    return ret;
}

/**************************************************************************
 * 				MMDRV_MidiOut_Callback		[internal]
 */
static  void	CALLBACK MMDRV_MidiOut_Callback(HDRVR hDev, UINT uMsg, DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2)
{
    LPWINE_MLD	mld = (LPWINE_MLD)dwInstance;

    switch (uMsg) {
    case MOM_OPEN:
    case MOM_CLOSE:
	/* dwParam1 & dwParam2 are supposed to be 0, nothing to do */
	break;
    case MOM_DONE:
	if (!MMDRV_Is32(mld->mmdIndex)) {
	    /* initial map is: 32 => 16 */
	    LPMIDIHDR		mh16 = MapSL(dwParam1);
	    LPMIDIHDR		mh32 = *(LPMIDIHDR*)((LPSTR)mh16 - sizeof(LPMIDIHDR));

	    dwParam1 = (DWORD)mh32;
	    mh32->dwFlags = mh16->dwFlags;
	    mh32->dwOffset = mh16->dwOffset;
	    if (mh32->reserved >= sizeof(MIDIHDR))
		mh32->dwOffset = mh16->dwOffset;
	}
	/* else { 32 => 32, nothing to do, same struct is kept }*/
	break;
    /* case MOM_POSITIONCB: */
    default:
	ERR("Unknown msg %u\n", uMsg);
    }

    MMDRV_Callback(mld, hDev, uMsg, dwParam1, dwParam2);
}

/******************************************************************
 *		                        MMSYSTDRV_MidiOut_MapCB
 */
static  void MMSYSTDRV_MidiOut_MapCB(UINT uMsg, DWORD_PTR* dwUser, DWORD_PTR* dwParam1, DWORD_PTR* dwParam2)
{
    switch (uMsg) {
    case MOM_OPEN:
    case MOM_CLOSE:
	/* dwParam1 & dwParam2 are supposed to be 0, nothing to do */
	break;
    case MOM_DONE:
        {
	    /* initial map is: 16 => 32 */
	    LPMIDIHDR		mh32 = (LPMIDIHDR)(*dwParam1);
	    SEGPTR		segmh16 = *(SEGPTR*)((LPSTR)mh32 - sizeof(LPMIDIHDR));
	    LPMIDIHDR		mh16 = MapSL(segmh16);

	    *dwParam1 = (DWORD)segmh16;
	    mh16->dwFlags = mh32->dwFlags;
	    if (mh16->reserved >= sizeof(MIDIHDR))
		mh16->dwOffset = mh32->dwOffset;
	}
	break;
    case MOM_POSITIONCB:
        FIXME("NIY\n");
        /* FIXME: would require to recreate a 16bit MIDIHDR here */
        *dwParam1 = *dwParam2 = 0;
        break;
    default:
	ERR("Unknown msg %u\n", uMsg);
    }
}

/* =================================
 *   W A V E  I N    M A P P E R S
 * ================================= */

/**************************************************************************
 * 				MMSYSTDRV_WaveIn_Map16To32W		[internal]
 */
static  MMSYSTEM_MapType	MMSYSTDRV_WaveIn_Map16To32W  (UINT wMsg, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2)
{
    MMSYSTEM_MapType	ret = MMSYSTEM_MAP_MSGERROR;

    switch (wMsg) {
    case WIDM_GETNUMDEVS:
    case WIDM_RESET:
    case WIDM_START:
    case WIDM_STOP:
	ret = MMSYSTEM_MAP_OK;
	break;
    case WIDM_OPEN:
    case WIDM_CLOSE:
	FIXME("Shouldn't be used: the corresponding 16 bit functions use the 32 bit interface\n");
	break;
    case WIDM_GETDEVCAPS:
	{
            LPWAVEINCAPSW	wic32 = HeapAlloc(GetProcessHeap(), 0, sizeof(LPWAVEINCAPS16) + sizeof(WAVEINCAPSW));
	    LPWAVEINCAPS16	wic16 = MapSL(*lpParam1);

	    if (wic32) {
		*(LPWAVEINCAPS16*)wic32 = wic16;
		wic32 = (LPWAVEINCAPSW)((LPSTR)wic32 + sizeof(LPWAVEINCAPS16));
		*lpParam1 = (DWORD)wic32;
		*lpParam2 = sizeof(WAVEINCAPSW);

		ret = MMSYSTEM_MAP_OKMEM;
	    } else {
		ret = MMSYSTEM_MAP_NOMEM;
	    }
	}
	break;
    case WIDM_GETPOS:
	{
            LPMMTIME		mmt32 = HeapAlloc(GetProcessHeap(), 0, sizeof(LPMMTIME16) + sizeof(MMTIME));
	    LPMMTIME16		mmt16 = MapSL(*lpParam1);

	    if (mmt32) {
		*(LPMMTIME16*)mmt32 = mmt16;
		mmt32 = (LPMMTIME)((LPSTR)mmt32 + sizeof(LPMMTIME16));

		mmt32->wType = mmt16->wType;
		*lpParam1 = (DWORD)mmt32;
		*lpParam2 = sizeof(MMTIME);

		ret = MMSYSTEM_MAP_OKMEM;
	    } else {
		ret = MMSYSTEM_MAP_NOMEM;
	    }
	}
	break;
    case WIDM_PREPARE:
	{
	    LPWAVEHDR		wh32 = HeapAlloc(GetProcessHeap(), 0, sizeof(LPWAVEHDR) + sizeof(WAVEHDR));
	    LPWAVEHDR		wh16 = MapSL(*lpParam1);

	    if (wh32) {
		*(LPWAVEHDR*)wh32 = (LPWAVEHDR)*lpParam1;
		wh32 = (LPWAVEHDR)((LPSTR)wh32 + sizeof(LPWAVEHDR));
		wh32->lpData = MapSL((SEGPTR)wh16->lpData);
		wh32->dwBufferLength = wh16->dwBufferLength;
		wh32->dwBytesRecorded = wh16->dwBytesRecorded;
		wh32->dwUser = wh16->dwUser;
		wh32->dwFlags = wh16->dwFlags;
		wh32->dwLoops = wh16->dwLoops;
		/* FIXME: nothing on wh32->lpNext */
		/* could link the wh32->lpNext at this level for memory house keeping */
		wh16->lpNext = wh32; /* for reuse in unprepare and write */
		*lpParam1 = (DWORD)wh32;
		*lpParam2 = sizeof(WAVEHDR);

		ret = MMSYSTEM_MAP_OKMEM;
	    } else {
		ret = MMSYSTEM_MAP_NOMEM;
	    }
	}
	break;
    case WIDM_ADDBUFFER:
    case WIDM_UNPREPARE:
	{
	    LPWAVEHDR		wh16 = MapSL(*lpParam1);
	    LPWAVEHDR		wh32 = wh16->lpNext;

	    *lpParam1 = (DWORD)wh32;
	    *lpParam2 = sizeof(WAVEHDR);
	    /* dwBufferLength can be reduced between prepare & write */
	    if (wMsg == WIDM_ADDBUFFER && wh32->dwBufferLength < wh16->dwBufferLength) {
		ERR("Size of buffer has been increased from %d to %d, keeping initial value\n",
		    wh32->dwBufferLength, wh16->dwBufferLength);
	    } else
                wh32->dwBufferLength = wh16->dwBufferLength;
	    ret = MMSYSTEM_MAP_OKMEM;
	}
	break;
    case WIDM_MAPPER_STATUS:
	/* just a single DWORD */
	*lpParam2 = (DWORD)MapSL(*lpParam2);
	ret = MMSYSTEM_MAP_OK;
	break;
    default:
	FIXME("NIY: no conversion yet for %u [%lx,%lx]\n", wMsg, *lpParam1, *lpParam2);
	break;
    }
    return ret;
}

/**************************************************************************
 * 				MMSYSTDRV_WaveIn_UnMap16To32W	[internal]
 */
static  MMSYSTEM_MapType	MMSYSTDRV_WaveIn_UnMap16To32W(UINT wMsg, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2, MMRESULT fn_ret)
{
    MMSYSTEM_MapType	ret = MMSYSTEM_MAP_MSGERROR;

    switch (wMsg) {
    case WIDM_GETNUMDEVS:
    case WIDM_RESET:
    case WIDM_START:
    case WIDM_STOP:
    case WIDM_MAPPER_STATUS:
	ret = MMSYSTEM_MAP_OK;
	break;
    case WIDM_OPEN:
    case WIDM_CLOSE:
	FIXME("Shouldn't be used: the corresponding 16 bit functions use the 32 bit interface\n");
	break;
    case WIDM_GETDEVCAPS:
	{
            LPWAVEINCAPSW		wic32 = (LPWAVEINCAPSW)(*lpParam1);
	    LPWAVEINCAPS16		wic16 = *(LPWAVEINCAPS16*)((LPSTR)wic32 - sizeof(LPWAVEINCAPS16));

	    wic16->wMid = wic32->wMid;
	    wic16->wPid = wic32->wPid;
	    wic16->vDriverVersion = wic32->vDriverVersion;
            WideCharToMultiByte( CP_ACP, 0, wic32->szPname, -1, wic16->szPname,
                                 sizeof(wic16->szPname), NULL, NULL );
	    wic16->dwFormats = wic32->dwFormats;
	    wic16->wChannels = wic32->wChannels;
	    HeapFree(GetProcessHeap(), 0, (LPSTR)wic32 - sizeof(LPWAVEINCAPS16));
	    ret = MMSYSTEM_MAP_OK;
	}
	break;
    case WIDM_GETPOS:
	{
            LPMMTIME		mmt32 = (LPMMTIME)(*lpParam1);
	    LPMMTIME16		mmt16 = *(LPMMTIME16*)((LPSTR)mmt32 - sizeof(LPMMTIME16));

	    MMSYSTEM_MMTIME32to16(mmt16, mmt32);
	    HeapFree(GetProcessHeap(), 0, (LPSTR)mmt32 - sizeof(LPMMTIME16));
	    ret = MMSYSTEM_MAP_OK;
	}
	break;
    case WIDM_ADDBUFFER:
    case WIDM_PREPARE:
    case WIDM_UNPREPARE:
	{
	    LPWAVEHDR		wh32 = (LPWAVEHDR)(*lpParam1);
	    LPWAVEHDR		wh16 = MapSL(*(SEGPTR*)((LPSTR)wh32 - sizeof(LPWAVEHDR)));

	    assert(wh16->lpNext == wh32);
	    wh16->dwBufferLength = wh32->dwBufferLength;
	    wh16->dwBytesRecorded = wh32->dwBytesRecorded;
	    wh16->dwUser = wh32->dwUser;
	    wh16->dwFlags = wh32->dwFlags;
	    wh16->dwLoops = wh32->dwLoops;

	    if (wMsg == WIDM_UNPREPARE && fn_ret == MMSYSERR_NOERROR) {
		HeapFree(GetProcessHeap(), 0, (LPSTR)wh32 - sizeof(LPWAVEHDR));
		wh16->lpNext = 0;
	    }
	    ret = MMSYSTEM_MAP_OK;
	}
	break;
    default:
	FIXME("NIY: no conversion yet for %u [%lx,%lx]\n", wMsg, *lpParam1, *lpParam2);
	break;
    }
    return ret;
}

/**************************************************************************
 * 				MMDRV_WaveIn_Map32WTo16		[internal]
 */
static  WINMM_MapType	MMDRV_WaveIn_Map32WTo16  (UINT wMsg, DWORD_PTR *lpdwUser, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2)
{
    WINMM_MapType	ret = WINMM_MAP_MSGERROR;

    switch (wMsg) {
    case WIDM_CLOSE:
    case WIDM_GETNUMDEVS:
    case WIDM_RESET:
    case WIDM_START:
    case WIDM_STOP:
	ret = WINMM_MAP_OK;
	break;

    case WIDM_OPEN:
	{
            LPWAVEOPENDESC		wod32 = (LPWAVEOPENDESC)*lpParam1;
	    int				sz = sizeof(WAVEFORMATEX);
	    LPVOID			ptr;
	    LPWAVEOPENDESC16		wod16;

	    /* allocated data are mapped as follows:
	       LPWAVEOPENDESC	ptr to orig lParam1
	       DWORD		orig dwUser, which is a pointer to DWORD:driver dwInstance
	       DWORD		dwUser passed to driver
	       WAVEOPENDESC16	wod16: openDesc passed to driver
	       WAVEFORMATEX	openDesc->lpFormat passed to driver
	       xxx		extra bytes to WAVEFORMATEX
	    */
	    if (wod32->lpFormat->wFormatTag != WAVE_FORMAT_PCM) {
		TRACE("Allocating %u extra bytes (%d)\n", wod32->lpFormat->cbSize, wod32->lpFormat->wFormatTag);
		sz += wod32->lpFormat->cbSize;
	    }

            ptr = HeapAlloc( GetProcessHeap(), 0,
                             sizeof(LPWAVEOPENDESC) + 2*sizeof(DWORD) + sizeof(WAVEOPENDESC16) + sz);

	    if (ptr) {
                SEGPTR seg_ptr = MapLS( ptr );
		*(LPWAVEOPENDESC*)ptr = wod32;
		*(LPDWORD)((char*)ptr + sizeof(LPWAVEOPENDESC)) = *lpdwUser;
		wod16 = (LPWAVEOPENDESC16)((LPSTR)ptr + sizeof(LPWAVEOPENDESC) + 2*sizeof(DWORD));

		wod16->hWave = HWAVE_16(wod32->hWave);
		wod16->lpFormat = (LPWAVEFORMATEX)(seg_ptr + sizeof(LPWAVEOPENDESC) + 2*sizeof(DWORD) + sizeof(WAVEOPENDESC16));
		memcpy(wod16 + 1, wod32->lpFormat, sz);

		wod16->dwCallback = wod32->dwCallback;
		wod16->dwInstance = wod32->dwInstance;
		wod16->uMappedDeviceID = wod32->uMappedDeviceID;
		wod16->dnDevNode = wod32->dnDevNode;

		*lpParam1 = seg_ptr + sizeof(LPWAVEOPENDESC) + 2*sizeof(DWORD);
		*lpdwUser = seg_ptr + sizeof(LPWAVEOPENDESC) + sizeof(DWORD);

		ret = WINMM_MAP_OKMEM;
	    } else {
		ret = WINMM_MAP_NOMEM;
	    }
	}
	break;
    case WIDM_PREPARE:
	{
	    LPWAVEHDR		wh32 = (LPWAVEHDR)*lpParam1;
	    LPWAVEHDR		wh16;
	    LPVOID ptr = HeapAlloc( GetProcessHeap(), 0,
                                    sizeof(LPWAVEHDR) + sizeof(WAVEHDR) + wh32->dwBufferLength);

	    if (ptr) {
                SEGPTR seg_ptr = MapLS( ptr );
		*(LPWAVEHDR*)ptr = wh32;
		wh16 = (LPWAVEHDR)((LPSTR)ptr + sizeof(LPWAVEHDR));
		wh16->lpData = (LPSTR)seg_ptr + sizeof(LPWAVEHDR) + sizeof(WAVEHDR);
		/* data will be copied on WODM_WRITE */
		wh16->dwBufferLength = wh32->dwBufferLength;
		wh16->dwBytesRecorded = wh32->dwBytesRecorded;
		wh16->dwUser = wh32->dwUser;
		wh16->dwFlags = wh32->dwFlags;
		wh16->dwLoops = wh32->dwLoops;
		/* FIXME: nothing on wh32->lpNext */
		/* could link the wh32->lpNext at this level for memory house keeping */
		wh32->lpNext = wh16; /* for reuse in unprepare and write */
		*lpParam1 = seg_ptr + sizeof(LPWAVEHDR);
		*lpParam2 = sizeof(WAVEHDR);
		TRACE("wh16=%08lx wh16->lpData=%p wh32->buflen=%u wh32->lpData=%p\n",
		      *lpParam1, wh16->lpData, wh32->dwBufferLength, wh32->lpData);

		ret = WINMM_MAP_OKMEM;
	    } else {
		ret = WINMM_MAP_NOMEM;
	    }
	}
	break;
    case WIDM_ADDBUFFER:
    case WIDM_UNPREPARE:
 	{
	    LPWAVEHDR		wh32 = (LPWAVEHDR)(*lpParam1);
	    LPWAVEHDR		wh16 = wh32->lpNext;
	    LPSTR		ptr = (LPSTR)wh16 - sizeof(LPWAVEHDR);
            SEGPTR seg_ptr = MapLS( ptr );

	    assert(*(LPWAVEHDR*)ptr == wh32);

	    if (wMsg == WIDM_ADDBUFFER)
		memcpy((LPSTR)wh16 + sizeof(WAVEHDR), wh32->lpData, wh32->dwBufferLength);

	    *lpParam1 = seg_ptr + sizeof(LPWAVEHDR);
	    *lpParam2 = sizeof(WAVEHDR);
	    TRACE("wh16=%08lx wh16->lpData=%p wh32->buflen=%u wh32->lpData=%p\n",
		  *lpParam1, wh16->lpData, wh32->dwBufferLength, wh32->lpData);

	    /* dwBufferLength can be reduced between prepare & write */
	    if (wMsg == WIDM_ADDBUFFER && wh16->dwBufferLength < wh32->dwBufferLength) {
		ERR("Size of buffer has been increased from %d to %d, keeping initial value\n",
		    wh16->dwBufferLength, wh32->dwBufferLength);
	    } else
                wh16->dwBufferLength = wh32->dwBufferLength;
	    ret = WINMM_MAP_OKMEM;
	}
	break;
   case WIDM_GETDEVCAPS:
	{
            LPWAVEINCAPSW wic32 = (LPWAVEINCAPSW)*lpParam1;
            LPSTR ptr = HeapAlloc( GetProcessHeap(), 0 ,sizeof(LPWAVEINCAPSW) + sizeof(WAVEINCAPS16));

	    if (ptr) {
		*(LPWAVEINCAPSW*)ptr = wic32;
		ret = WINMM_MAP_OKMEM;
	    } else {
		ret = WINMM_MAP_NOMEM;
	    }
	    *lpParam1 = MapLS(ptr) + sizeof(LPWAVEINCAPSW);
	    *lpParam2 = sizeof(WAVEINCAPS16);
	}
	break;
    case WIDM_GETPOS:
 	{
            LPMMTIME mmt32 = (LPMMTIME)*lpParam1;
            LPSTR ptr = HeapAlloc( GetProcessHeap(), 0, sizeof(LPMMTIME) + sizeof(MMTIME16));
            LPMMTIME16 mmt16 = (LPMMTIME16)(ptr + sizeof(LPMMTIME));

	    if (ptr) {
		*(LPMMTIME*)ptr = mmt32;
		mmt16->wType = mmt32->wType;
		ret = WINMM_MAP_OKMEM;
	    } else {
		ret = WINMM_MAP_NOMEM;
	    }
	    *lpParam1 = MapLS(ptr) + sizeof(LPMMTIME);
	    *lpParam2 = sizeof(MMTIME16);
	}
	break;
    case DRVM_MAPPER_STATUS:
 	{
            LPDWORD p32 = (LPDWORD)*lpParam2;
            *lpParam2 = MapLS(p32);
            ret = WINMM_MAP_OKMEM;
	}
	break;
    default:
	FIXME("NIY: no conversion yet for %u [%lx,%lx]\n", wMsg, *lpParam1, *lpParam2);
	break;
    }
    return ret;
}

/**************************************************************************
 * 				MMDRV_WaveIn_UnMap32WTo16	[internal]
 */
static  WINMM_MapType	MMDRV_WaveIn_UnMap32WTo16(UINT wMsg, DWORD_PTR *lpdwUser, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2, MMRESULT fn_ret)
{
    WINMM_MapType	ret = WINMM_MAP_MSGERROR;

    switch (wMsg) {
    case WIDM_CLOSE:
    case WIDM_GETNUMDEVS:
    case WIDM_RESET:
    case WIDM_START:
    case WIDM_STOP:
	ret = WINMM_MAP_OK;
	break;

    case WIDM_OPEN:
	{
	    LPWAVEOPENDESC16		wod16 = MapSL(*lpParam1);
	    LPSTR			ptr   = (LPSTR)wod16 - sizeof(LPWAVEOPENDESC) - 2*sizeof(DWORD);
            LPWAVEOPENDESC		wod32 = *(LPWAVEOPENDESC*)ptr;

            UnMapLS( *lpParam1 );
	    wod32->uMappedDeviceID = wod16->uMappedDeviceID;
	    **(DWORD**)(ptr + sizeof(LPWAVEOPENDESC)) = *(LPDWORD)(ptr + sizeof(LPWAVEOPENDESC) + sizeof(DWORD));
            HeapFree( GetProcessHeap(), 0, ptr );
	    ret = WINMM_MAP_OK;
	}
	break;

    case WIDM_ADDBUFFER:
    case WIDM_PREPARE:
    case WIDM_UNPREPARE:
	{
	    LPWAVEHDR		wh16 = MapSL(*lpParam1);
	    LPSTR		ptr = (LPSTR)wh16 - sizeof(LPWAVEHDR);
	    LPWAVEHDR		wh32 = *(LPWAVEHDR*)ptr;

	    assert(wh32->lpNext == wh16);
	    wh32->dwBytesRecorded = wh16->dwBytesRecorded;
	    wh32->dwUser = wh16->dwUser;
	    wh32->dwFlags = wh16->dwFlags;
	    wh32->dwLoops = wh16->dwLoops;
            UnMapLS( *lpParam1 );

	    if (wMsg == WIDM_UNPREPARE && fn_ret == MMSYSERR_NOERROR) {
                HeapFree( GetProcessHeap(), 0, ptr );
		wh32->lpNext = 0;
	    }
	    ret = WINMM_MAP_OK;
	}
	break;
     case WIDM_GETDEVCAPS:
	{
	    LPWAVEINCAPS16		wic16 = MapSL(*lpParam1);
	    LPSTR			ptr   = (LPSTR)wic16 - sizeof(LPWAVEINCAPSW);
            LPWAVEINCAPSW		wic32 = *(LPWAVEINCAPSW*)ptr;

	    wic32->wMid = wic16->wMid;
	    wic32->wPid = wic16->wPid;
	    wic32->vDriverVersion = wic16->vDriverVersion;
            WideCharToMultiByte( CP_ACP, 0, wic32->szPname, -1, wic16->szPname,
                                 sizeof(wic16->szPname), NULL, NULL );
	    wic32->dwFormats = wic16->dwFormats;
	    wic32->wChannels = wic16->wChannels;
            UnMapLS( *lpParam1 );
            HeapFree( GetProcessHeap(), 0, ptr );
	    ret = WINMM_MAP_OK;
	}
	break;
    case WIDM_GETPOS:
	{
	    LPMMTIME16		mmt16 = MapSL(*lpParam1);
	    LPSTR		ptr   = (LPSTR)mmt16 - sizeof(LPMMTIME);
            LPMMTIME		mmt32 = *(LPMMTIME*)ptr;

	    WINMM_MMTIME16to32(mmt32, mmt16);
            UnMapLS( *lpParam1 );
            HeapFree( GetProcessHeap(), 0, ptr );
	    ret = WINMM_MAP_OK;
	}
	break;
    case DRVM_MAPPER_STATUS:
	{
            UnMapLS( *lpParam2 );
	    ret = WINMM_MAP_OK;
	}
	break;
    default:
	FIXME("NIY: no conversion yet for %u [%lx,%lx]\n", wMsg, *lpParam1, *lpParam2);
	break;
    }
    return ret;
}

/**************************************************************************
 * 				MMDRV_WaveIn_Callback		[internal]
 */
static  void	CALLBACK MMDRV_WaveIn_Callback(HDRVR hDev, UINT uMsg, DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2)
{
    LPWINE_MLD	mld = (LPWINE_MLD)dwInstance;

    switch (uMsg) {
    case WIM_OPEN:
    case WIM_CLOSE:
	/* dwParam1 & dwParam2 are supposed to be 0, nothing to do */
	break;
    case WIM_DATA:
	if (!MMDRV_Is32(mld->mmdIndex)) {
	    /* initial map is: 32 => 16 */
	    LPWAVEHDR		wh16 = MapSL(dwParam1);
	    LPWAVEHDR		wh32 = *(LPWAVEHDR*)((LPSTR)wh16 - sizeof(LPWAVEHDR));

	    dwParam1 = (DWORD)wh32;
	    wh32->dwFlags = wh16->dwFlags;
	    wh32->dwBytesRecorded = wh16->dwBytesRecorded;
	}
	/* else { 32 => 32, nothing to do, same struct is kept }*/
	break;
    default:
	ERR("Unknown msg %u\n", uMsg);
    }

    MMDRV_Callback(mld, hDev, uMsg, dwParam1, dwParam2);
}

/**************************************************************************
 * 				MMSYSTDRV_WaveIn_MapCB		[internal]
 */
static  void    MMSYSTDRV_WaveIn_MapCB(UINT uMsg, DWORD_PTR* dwUser, DWORD_PTR* dwParam1, DWORD_PTR* dwParam2)
{
    switch (uMsg) {
    case WIM_OPEN:
    case WIM_CLOSE:
	/* dwParam1 & dwParam2 are supposed to be 0, nothing to do */
	break;
    case WIM_DATA:
        {
	    /* initial map is: 16 => 32 */
	    LPWAVEHDR		wh32 = (LPWAVEHDR)(*dwParam1);
	    SEGPTR		segwh16 = *(SEGPTR*)((LPSTR)wh32 - sizeof(LPWAVEHDR));
	    LPWAVEHDR		wh16 = MapSL(segwh16);

	    *dwParam1 = (DWORD)segwh16;
	    wh16->dwFlags = wh32->dwFlags;
	    wh16->dwBytesRecorded = wh32->dwBytesRecorded;
	}
	break;
    default:
	ERR("Unknown msg %u\n", uMsg);
    }
}

/* =================================
 *   W A V E  O U T  M A P P E R S
 * ================================= */

/**************************************************************************
 * 				MMSYSTDRV_WaveOut_Map16To32W	[internal]
 */
static  MMSYSTEM_MapType	MMSYSTDRV_WaveOut_Map16To32W  (UINT wMsg, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2)
{
    MMSYSTEM_MapType	ret = MMSYSTEM_MAP_MSGERROR;

    switch (wMsg) {
    /* nothing to do */
    case WODM_BREAKLOOP:
    case WODM_CLOSE:
    case WODM_GETNUMDEVS:
    case WODM_PAUSE:
    case WODM_RESET:
    case WODM_RESTART:
    case WODM_SETPITCH:
    case WODM_SETPLAYBACKRATE:
    case WODM_SETVOLUME:
	ret = MMSYSTEM_MAP_OK;
	break;

    case WODM_GETPITCH:
    case WODM_GETPLAYBACKRATE:
    case WODM_GETVOLUME:
    case WODM_OPEN:
	FIXME("Shouldn't be used: the corresponding 16 bit functions use the 32 bit interface\n");
	break;

    case WODM_GETDEVCAPS:
	{
            LPWAVEOUTCAPSW		woc32 = HeapAlloc(GetProcessHeap(), 0, sizeof(LPWAVEOUTCAPS16) + sizeof(WAVEOUTCAPSW));
	    LPWAVEOUTCAPS16		woc16 = MapSL(*lpParam1);

	    if (woc32) {
		*(LPWAVEOUTCAPS16*)woc32 = woc16;
		woc32 = (LPWAVEOUTCAPSW)((LPSTR)woc32 + sizeof(LPWAVEOUTCAPS16));
		*lpParam1 = (DWORD)woc32;
		*lpParam2 = sizeof(WAVEOUTCAPSW);

		ret = MMSYSTEM_MAP_OKMEM;
	    } else {
		ret = MMSYSTEM_MAP_NOMEM;
	    }
	}
	break;
    case WODM_GETPOS:
	{
            LPMMTIME		mmt32 = HeapAlloc(GetProcessHeap(), 0, sizeof(LPMMTIME16) + sizeof(MMTIME));
	    LPMMTIME16		mmt16 = MapSL(*lpParam1);

	    if (mmt32) {
		*(LPMMTIME16*)mmt32 = mmt16;
		mmt32 = (LPMMTIME)((LPSTR)mmt32 + sizeof(LPMMTIME16));

		mmt32->wType = mmt16->wType;
		*lpParam1 = (DWORD)mmt32;
		*lpParam2 = sizeof(MMTIME);

		ret = MMSYSTEM_MAP_OKMEM;
	    } else {
		ret = MMSYSTEM_MAP_NOMEM;
	    }
	}
	break;
    case WODM_PREPARE:
	{
	    LPWAVEHDR		wh32 = HeapAlloc(GetProcessHeap(), 0, sizeof(LPWAVEHDR) + sizeof(WAVEHDR));
	    LPWAVEHDR		wh16 = MapSL(*lpParam1);

	    if (wh32) {
		*(LPWAVEHDR*)wh32 = (LPWAVEHDR)*lpParam1;
		wh32 = (LPWAVEHDR)((LPSTR)wh32 + sizeof(LPWAVEHDR));
		wh32->lpData = MapSL((SEGPTR)wh16->lpData);
		wh32->dwBufferLength = wh16->dwBufferLength;
		wh32->dwBytesRecorded = wh16->dwBytesRecorded;
		wh32->dwUser = wh16->dwUser;
		wh32->dwFlags = wh16->dwFlags;
		wh32->dwLoops = wh16->dwLoops;
		/* FIXME: nothing on wh32->lpNext */
		/* could link the wh32->lpNext at this level for memory house keeping */
		wh16->lpNext = wh32; /* for reuse in unprepare and write */
		*lpParam1 = (DWORD)wh32;
		*lpParam2 = sizeof(WAVEHDR);

		ret = MMSYSTEM_MAP_OKMEM;
	    } else {
		ret = MMSYSTEM_MAP_NOMEM;
	    }
	}
	break;
    case WODM_UNPREPARE:
    case WODM_WRITE:
	{
	    LPWAVEHDR		wh16 = MapSL(*lpParam1);
	    LPWAVEHDR		wh32 = wh16->lpNext;

	    *lpParam1 = (DWORD)wh32;
	    *lpParam2 = sizeof(WAVEHDR);
	    /* dwBufferLength can be reduced between prepare & write */
	    if (wMsg == WODM_WRITE && wh32->dwBufferLength < wh16->dwBufferLength) {
		ERR("Size of buffer has been increased from %d to %d, keeping initial value\n",
		    wh32->dwBufferLength, wh16->dwBufferLength);
	    } else
                wh32->dwBufferLength = wh16->dwBufferLength;
	    ret = MMSYSTEM_MAP_OKMEM;
	}
	break;
    case WODM_MAPPER_STATUS:
	*lpParam2 = (DWORD)MapSL(*lpParam2);
	ret = MMSYSTEM_MAP_OK;
	break;
    default:
	FIXME("NIY: no conversion yet for %u [%lx,%lx]\n", wMsg, *lpParam1, *lpParam2);
	break;
    }
    return ret;
}

/**************************************************************************
 * 				MMSYSTDRV_WaveOut_UnMap16To32W	[internal]
 */
static  MMSYSTEM_MapType	MMSYSTDRV_WaveOut_UnMap16To32W(UINT wMsg, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2, MMRESULT fn_ret)
{
    MMSYSTEM_MapType	ret = MMSYSTEM_MAP_MSGERROR;

    switch (wMsg) {
    /* nothing to do */
    case WODM_BREAKLOOP:
    case WODM_CLOSE:
    case WODM_GETNUMDEVS:
    case WODM_PAUSE:
    case WODM_RESET:
    case WODM_RESTART:
    case WODM_SETPITCH:
    case WODM_SETPLAYBACKRATE:
    case WODM_SETVOLUME:
    case WODM_MAPPER_STATUS:
	ret = MMSYSTEM_MAP_OK;
	break;

    case WODM_GETPITCH:
    case WODM_GETPLAYBACKRATE:
    case WODM_GETVOLUME:
    case WODM_OPEN:
	FIXME("Shouldn't be used: those 16 bit functions use the 32 bit interface\n");
	break;

    case WODM_GETDEVCAPS:
	{
            LPWAVEOUTCAPSW		woc32 = (LPWAVEOUTCAPSW)(*lpParam1);
	    LPWAVEOUTCAPS16		woc16 = *(LPWAVEOUTCAPS16*)((LPSTR)woc32 - sizeof(LPWAVEOUTCAPS16));

	    woc16->wMid = woc32->wMid;
	    woc16->wPid = woc32->wPid;
	    woc16->vDriverVersion = woc32->vDriverVersion;
            WideCharToMultiByte( CP_ACP, 0, woc32->szPname, -1, woc16->szPname,
                                 sizeof(woc16->szPname), NULL, NULL );
	    woc16->dwFormats = woc32->dwFormats;
	    woc16->wChannels = woc32->wChannels;
	    woc16->dwSupport = woc32->dwSupport;
	    HeapFree(GetProcessHeap(), 0, (LPSTR)woc32 - sizeof(LPWAVEOUTCAPS16));
	    ret = MMSYSTEM_MAP_OK;
	}
	break;
    case WODM_GETPOS:
	{
            LPMMTIME		mmt32 = (LPMMTIME)(*lpParam1);
	    LPMMTIME16		mmt16 = *(LPMMTIME16*)((LPSTR)mmt32 - sizeof(LPMMTIME16));

	    MMSYSTEM_MMTIME32to16(mmt16, mmt32);
	    HeapFree(GetProcessHeap(), 0, (LPSTR)mmt32 - sizeof(LPMMTIME16));
	    ret = MMSYSTEM_MAP_OK;
	}
	break;
    case WODM_PREPARE:
    case WODM_UNPREPARE:
    case WODM_WRITE:
	{
	    LPWAVEHDR		wh32 = (LPWAVEHDR)(*lpParam1);
	    LPWAVEHDR		wh16 = MapSL(*(SEGPTR*)((LPSTR)wh32 - sizeof(LPWAVEHDR)));

	    assert(wh16->lpNext == wh32);
	    wh16->dwBufferLength = wh32->dwBufferLength;
	    wh16->dwBytesRecorded = wh32->dwBytesRecorded;
	    wh16->dwUser = wh32->dwUser;
	    wh16->dwFlags = wh32->dwFlags;
	    wh16->dwLoops = wh32->dwLoops;

	    if (wMsg == WODM_UNPREPARE && fn_ret == MMSYSERR_NOERROR) {
		HeapFree(GetProcessHeap(), 0, (LPSTR)wh32 - sizeof(LPWAVEHDR));
		wh16->lpNext = 0;
	    }
	    ret = MMSYSTEM_MAP_OK;
	}
	break;
    default:
	FIXME("NIY: no conversion yet for %u [%lx,%lx]\n", wMsg, *lpParam1, *lpParam2);
	break;
    }
    return ret;
}

/**************************************************************************
 * 				MMDRV_WaveOut_Map32WTo16	[internal]
 */
static  WINMM_MapType	MMDRV_WaveOut_Map32WTo16  (UINT wMsg, DWORD_PTR *lpdwUser, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2)
{
    WINMM_MapType	ret;

    switch (wMsg) {
	/* nothing to do */
    case WODM_BREAKLOOP:
    case WODM_CLOSE:
    case WODM_GETNUMDEVS:
    case WODM_PAUSE:
    case WODM_RESET:
    case WODM_RESTART:
    case WODM_SETPITCH:
    case WODM_SETPLAYBACKRATE:
    case WODM_SETVOLUME:
	ret = WINMM_MAP_OK;
	break;

    case WODM_GETDEVCAPS:
	{
            LPWAVEOUTCAPSW woc32 = (LPWAVEOUTCAPSW)*lpParam1;
            LPSTR ptr = HeapAlloc( GetProcessHeap(), 0,
                                   sizeof(LPWAVEOUTCAPSW) + sizeof(WAVEOUTCAPS16));

	    if (ptr) {
		*(LPWAVEOUTCAPSW*)ptr = woc32;
		ret = WINMM_MAP_OKMEM;
	    } else {
		ret = WINMM_MAP_NOMEM;
	    }
	    *lpParam1 = MapLS(ptr) + sizeof(LPWAVEOUTCAPSW);
	    *lpParam2 = sizeof(WAVEOUTCAPS16);
	}
	break;
    case WODM_GETPITCH:
	FIXME("NIY: no conversion yet\n");
	ret = WINMM_MAP_MSGERROR;
	break;
    case WODM_GETPLAYBACKRATE:
	FIXME("NIY: no conversion yet\n");
	ret = WINMM_MAP_MSGERROR;
	break;
    case WODM_GETPOS:
	{
            LPMMTIME mmt32 = (LPMMTIME)*lpParam1;
            LPSTR ptr = HeapAlloc( GetProcessHeap(), 0, sizeof(LPMMTIME) + sizeof(MMTIME16));
            LPMMTIME16 mmt16 = (LPMMTIME16)(ptr + sizeof(LPMMTIME));

	    if (ptr) {
		*(LPMMTIME*)ptr = mmt32;
		mmt16->wType = mmt32->wType;
		ret = WINMM_MAP_OKMEM;
	    } else {
		ret = WINMM_MAP_NOMEM;
	    }
	    *lpParam1 = MapLS(ptr) + sizeof(LPMMTIME);
	    *lpParam2 = sizeof(MMTIME16);
	}
	break;
    case WODM_GETVOLUME:
	FIXME("NIY: no conversion yet\n");
	ret = WINMM_MAP_MSGERROR;
	break;
    case WODM_OPEN:
	{
            LPWAVEOPENDESC		wod32 = (LPWAVEOPENDESC)*lpParam1;
	    int				sz = sizeof(WAVEFORMATEX);
	    LPVOID			ptr;
	    LPWAVEOPENDESC16		wod16;

	    /* allocated data are mapped as follows:
	       LPWAVEOPENDESC	ptr to orig lParam1
	       DWORD		orig dwUser, which is a pointer to DWORD:driver dwInstance
	       DWORD		dwUser passed to driver
	       WAVEOPENDESC16	wod16: openDesc passed to driver
	       WAVEFORMATEX	openDesc->lpFormat passed to driver
	       xxx		extra bytes to WAVEFORMATEX
	    */
	    if (wod32->lpFormat->wFormatTag != WAVE_FORMAT_PCM) {
		TRACE("Allocating %u extra bytes (%d)\n", wod32->lpFormat->cbSize, wod32->lpFormat->wFormatTag);
		sz += wod32->lpFormat->cbSize;
	    }

	    ptr = HeapAlloc( GetProcessHeap(), 0,
                             sizeof(LPWAVEOPENDESC) + 2*sizeof(DWORD) + sizeof(WAVEOPENDESC16) + sz);

	    if (ptr) {
                SEGPTR seg_ptr = MapLS( ptr );
		*(LPWAVEOPENDESC*)ptr = wod32;
		*(LPDWORD)((char*)ptr + sizeof(LPWAVEOPENDESC)) = *lpdwUser;
		wod16 = (LPWAVEOPENDESC16)((LPSTR)ptr + sizeof(LPWAVEOPENDESC) + 2*sizeof(DWORD));

		wod16->hWave = HWAVE_16(wod32->hWave);
		wod16->lpFormat = (LPWAVEFORMATEX)(seg_ptr + sizeof(LPWAVEOPENDESC) + 2*sizeof(DWORD) + sizeof(WAVEOPENDESC16));
		memcpy(wod16 + 1, wod32->lpFormat, sz);

		wod16->dwCallback = wod32->dwCallback;
		wod16->dwInstance = wod32->dwInstance;
		wod16->uMappedDeviceID = wod32->uMappedDeviceID;
		wod16->dnDevNode = wod32->dnDevNode;

		*lpParam1 = seg_ptr + sizeof(LPWAVEOPENDESC) + 2*sizeof(DWORD);
		*lpdwUser = seg_ptr + sizeof(LPWAVEOPENDESC) + sizeof(DWORD);

		ret = WINMM_MAP_OKMEM;
	    } else {
		ret = WINMM_MAP_NOMEM;
	    }
	}
	break;
    case WODM_PREPARE:
	{
	    LPWAVEHDR		wh32 = (LPWAVEHDR)*lpParam1;
	    LPWAVEHDR		wh16;
	    LPVOID ptr = HeapAlloc( GetProcessHeap(), 0,
                                    sizeof(LPWAVEHDR) + sizeof(WAVEHDR) + wh32->dwBufferLength);

	    if (ptr) {
                SEGPTR seg_ptr = MapLS( ptr );
		*(LPWAVEHDR*)ptr = wh32;
		wh16 = (LPWAVEHDR)((LPSTR)ptr + sizeof(LPWAVEHDR));
		wh16->lpData = (LPSTR)seg_ptr + sizeof(LPWAVEHDR) + sizeof(WAVEHDR);
		/* data will be copied on WODM_WRITE */
		wh16->dwBufferLength = wh32->dwBufferLength;
		wh16->dwBytesRecorded = wh32->dwBytesRecorded;
		wh16->dwUser = wh32->dwUser;
		wh16->dwFlags = wh32->dwFlags;
		wh16->dwLoops = wh32->dwLoops;
		/* FIXME: nothing on wh32->lpNext */
		/* could link the wh32->lpNext at this level for memory house keeping */
		wh32->lpNext = wh16; /* for reuse in unprepare and write */
		*lpParam1 = seg_ptr + sizeof(LPWAVEHDR);
		*lpParam2 = sizeof(WAVEHDR);
		TRACE("wh16=%08lx wh16->lpData=%p wh32->buflen=%u wh32->lpData=%p\n",
		      *lpParam1, wh16->lpData, wh32->dwBufferLength, wh32->lpData);

		ret = WINMM_MAP_OKMEM;
	    } else {
		ret = WINMM_MAP_NOMEM;
	    }
	}
	break;
    case WODM_UNPREPARE:
    case WODM_WRITE:
	{
	    LPWAVEHDR		wh32 = (LPWAVEHDR)(*lpParam1);
	    LPWAVEHDR		wh16 = wh32->lpNext;
	    LPSTR		ptr = (LPSTR)wh16 - sizeof(LPWAVEHDR);
            SEGPTR seg_ptr = MapLS( ptr );

	    assert(*(LPWAVEHDR*)ptr == wh32);

	    if (wMsg == WODM_WRITE)
		memcpy((LPSTR)wh16 + sizeof(WAVEHDR), wh32->lpData, wh32->dwBufferLength);

	    *lpParam1 = seg_ptr + sizeof(LPWAVEHDR);
	    *lpParam2 = sizeof(WAVEHDR);
	    TRACE("wh16=%08lx wh16->lpData=%p wh32->buflen=%u wh32->lpData=%p\n",
		  *lpParam1, wh16->lpData, wh32->dwBufferLength, wh32->lpData);

	    /* dwBufferLength can be reduced between prepare & write */
	    if (wMsg == WODM_WRITE && wh16->dwBufferLength < wh32->dwBufferLength) {
		ERR("Size of buffer has been increased from %d to %d, keeping initial value\n",
		    wh16->dwBufferLength, wh32->dwBufferLength);
	    } else
                wh16->dwBufferLength = wh32->dwBufferLength;
	    ret = WINMM_MAP_OKMEM;
	}
	break;
    case DRVM_MAPPER_STATUS:
 	{
            LPDWORD p32 = (LPDWORD)*lpParam2;
            *lpParam2 = MapLS(p32);
            ret = WINMM_MAP_OKMEM;
	}
	break;
    default:
	FIXME("NIY: no conversion yet\n");
	ret = WINMM_MAP_MSGERROR;
	break;
    }
    return ret;
}

/**************************************************************************
 * 				MMDRV_WaveOut_UnMap32WTo16	[internal]
 */
static  WINMM_MapType	MMDRV_WaveOut_UnMap32WTo16(UINT wMsg, DWORD_PTR *lpdwUser, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2, MMRESULT fn_ret)
{
    WINMM_MapType	ret;

    switch (wMsg) {
	/* nothing to do */
    case WODM_BREAKLOOP:
    case WODM_CLOSE:
    case WODM_GETNUMDEVS:
    case WODM_PAUSE:
    case WODM_RESET:
    case WODM_RESTART:
    case WODM_SETPITCH:
    case WODM_SETPLAYBACKRATE:
    case WODM_SETVOLUME:
	ret = WINMM_MAP_OK;
	break;

    case WODM_GETDEVCAPS:
	{
	    LPWAVEOUTCAPS16		woc16 = MapSL(*lpParam1);
	    LPSTR			ptr   = (LPSTR)woc16 - sizeof(LPWAVEOUTCAPSW);
            LPWAVEOUTCAPSW		woc32 = *(LPWAVEOUTCAPSW*)ptr;

	    woc32->wMid = woc16->wMid;
	    woc32->wPid = woc16->wPid;
	    woc32->vDriverVersion = woc16->vDriverVersion;
            WideCharToMultiByte( CP_ACP, 0, woc32->szPname, -1, woc16->szPname,
                                 sizeof(woc16->szPname), NULL, NULL );
	    woc32->dwFormats = woc16->dwFormats;
	    woc32->wChannels = woc16->wChannels;
	    woc32->dwSupport = woc16->dwSupport;
            UnMapLS( *lpParam1 );
            HeapFree( GetProcessHeap(), 0, ptr );
	    ret = WINMM_MAP_OK;
	}
	break;
    case WODM_GETPITCH:
	FIXME("NIY: no conversion yet\n");
	ret = WINMM_MAP_MSGERROR;
	break;
    case WODM_GETPLAYBACKRATE:
	FIXME("NIY: no conversion yet\n");
	ret = WINMM_MAP_MSGERROR;
	break;
    case WODM_GETPOS:
	{
	    LPMMTIME16		mmt16 = MapSL(*lpParam1);
	    LPSTR		ptr   = (LPSTR)mmt16 - sizeof(LPMMTIME);
            LPMMTIME		mmt32 = *(LPMMTIME*)ptr;

	    WINMM_MMTIME16to32(mmt32, mmt16);
            UnMapLS( *lpParam1 );
            HeapFree( GetProcessHeap(), 0, ptr );
	    ret = WINMM_MAP_OK;
	}
	break;
    case WODM_OPEN:
	{
	    LPWAVEOPENDESC16		wod16 = MapSL(*lpParam1);
	    LPSTR			ptr   = (LPSTR)wod16 - sizeof(LPWAVEOPENDESC) - 2*sizeof(DWORD);
            LPWAVEOPENDESC		wod32 = *(LPWAVEOPENDESC*)ptr;

	    wod32->uMappedDeviceID = wod16->uMappedDeviceID;
	    **(DWORD**)(ptr + sizeof(LPWAVEOPENDESC)) = *(LPDWORD)(ptr + sizeof(LPWAVEOPENDESC) + sizeof(DWORD));
            UnMapLS( *lpParam1 );
            HeapFree( GetProcessHeap(), 0, ptr );
	    ret = WINMM_MAP_OK;
	}
	break;
    case WODM_PREPARE:
    case WODM_UNPREPARE:
    case WODM_WRITE:
	{
	    LPWAVEHDR		wh16 = MapSL(*lpParam1);
	    LPSTR		ptr = (LPSTR)wh16 - sizeof(LPWAVEHDR);
	    LPWAVEHDR		wh32 = *(LPWAVEHDR*)ptr;

	    assert(wh32->lpNext == wh16);
	    wh32->dwBytesRecorded = wh16->dwBytesRecorded;
	    wh32->dwUser = wh16->dwUser;
	    wh32->dwFlags = wh16->dwFlags;
	    wh32->dwLoops = wh16->dwLoops;

            UnMapLS( *lpParam1 );
	    if (wMsg == WODM_UNPREPARE && fn_ret == MMSYSERR_NOERROR) {
                HeapFree( GetProcessHeap(), 0, ptr );
		wh32->lpNext = 0;
	    }
	    ret = WINMM_MAP_OK;
	}
	break;
    case WODM_GETVOLUME:
	FIXME("NIY: no conversion yet\n");
	ret = WINMM_MAP_MSGERROR;
	break;
    case DRVM_MAPPER_STATUS:
	{
            UnMapLS( *lpParam2 );
	    ret = WINMM_MAP_OK;
	}
	break;
    default:
	FIXME("NIY: no conversion yet\n");
	ret = WINMM_MAP_MSGERROR;
	break;
    }
    return ret;
}

/**************************************************************************
 * 				MMDRV_WaveOut_Callback		[internal]
 */
static  void	CALLBACK MMDRV_WaveOut_Callback(HDRVR hDev, UINT uMsg, DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2)
{
    LPWINE_MLD	mld = (LPWINE_MLD)dwInstance;

    switch (uMsg) {
    case WOM_OPEN:
    case WOM_CLOSE:
	/* dwParam1 & dwParam2 are supposed to be 0, nothing to do */
	break;
    case WOM_DONE:
	if (!MMDRV_Is32(mld->mmdIndex)) {
	    /* initial map is: 32 => 16 */
	    LPWAVEHDR		wh16 = MapSL(dwParam1);
	    LPWAVEHDR		wh32 = *(LPWAVEHDR*)((LPSTR)wh16 - sizeof(LPWAVEHDR));

	    dwParam1 = (DWORD)wh32;
	    wh32->dwFlags = wh16->dwFlags;
	}
	/* else { 32 => 32, nothing to do, same struct is kept }*/
	break;
    default:
	ERR("Unknown msg %u\n", uMsg);
    }

    MMDRV_Callback(mld, hDev, uMsg, dwParam1, dwParam2);
}

/**************************************************************************
 * 				MMDRV_WaveOut_Callback		[internal]
 */
static  void	MMSYSTDRV_WaveOut_MapCB(UINT uMsg, DWORD_PTR* dwUser, DWORD_PTR* dwParam1, DWORD_PTR* dwParam2)
{
    switch (uMsg) {
    case WOM_OPEN:
    case WOM_CLOSE:
	/* dwParam1 & dwParam2 are supposed to be 0, nothing to do */
	break;
    case WOM_DONE:
        {
	    /* initial map is: 16 => 32 */
	    LPWAVEHDR		wh32 = (LPWAVEHDR)(*dwParam1);
	    SEGPTR		segwh16 = *(SEGPTR*)((LPSTR)wh32 - sizeof(LPWAVEHDR));
	    LPWAVEHDR		wh16 = MapSL(segwh16);

	    *dwParam1 = (DWORD)segwh16;
	    wh16->dwFlags = wh32->dwFlags;
	}
	break;
    default:
	ERR("Unknown msg %u\n", uMsg);
    }
}

/* =================================
 *  M A P P E R S   H A N D L I N G
 * ================================= */

static  LRESULT    MMDRV_CallMMDrvFunc16(DWORD fp16, WORD dev, WORD msg, LONG instance,
                                         LONG lp1, LONG lp2)
{
    WORD args[8];
    DWORD ret;

    args[7] = dev;
    args[6] = msg;
    args[5] = HIWORD(instance);
    args[4] = LOWORD(instance);
    args[3] = HIWORD(lp1);
    args[2] = LOWORD(lp1);
    args[1] = HIWORD(lp2);
    args[0] = LOWORD(lp2);
    WOWCallback16Ex( fp16, WCB16_PASCAL, sizeof(args), args, &ret );
    return LOWORD(ret);
}

/**************************************************************************
 * 				MMDRV_GetDescription16		[internal]
 */
static  BOOL	MMDRV_GetDescription16(const char* fname, char* buf, int buflen)
{
    OFSTRUCT   	ofs;
    HFILE	hFile;
    WORD 	w;
    DWORD	dw;
    BOOL	ret = FALSE;

    if ((hFile = OpenFile(fname, &ofs, OF_READ | OF_SHARE_DENY_WRITE)) == HFILE_ERROR) {
	ERR("Can't open file %s (builtin driver ?)\n", fname);
	return FALSE;
    }

#define E(_x)	do {TRACE _x;goto theEnd;} while(0)

    if (_lread(hFile, &w, 2) != 2)			E(("Can't read sig\n"));
    if (w != ('Z' * 256 + 'M')) 			E(("Bad sig %04x\n", w));
    if (_llseek(hFile, 0x3C, SEEK_SET) < 0) 		E(("Can't seek to ext header offset\n"));
    if (_lread(hFile, &dw, 4) != 4)			E(("Can't read ext header offset\n"));
    if (_llseek(hFile, dw + 0x2C, SEEK_SET) < 0) 	E(("Can't seek to ext header.nr table %u\n", dw+0x2C));
    if (_lread(hFile, &dw, 4) != 4)			E(("Can't read nr table offset\n"));
    if (_llseek(hFile, dw, SEEK_SET) < 0) 		E(("Can't seek to nr table %u\n", dw));
    if (_lread(hFile, buf, 1) != 1)			E(("Can't read descr length\n"));
    buflen = min((int)(unsigned)(BYTE)buf[0], buflen - 1);
    if (_lread(hFile, buf, buflen) != buflen)		E(("Can't read descr (%d)\n", buflen));
    buf[buflen] = '\0';
    ret = TRUE;
    TRACE("Got '%s' [%d]\n", buf, buflen);
theEnd:
    _lclose(hFile);
    return ret;
}

/******************************************************************
 *		MMDRV_LoadMMDrvFunc16
 *
 */
static unsigned MMDRV_LoadMMDrvFunc16(LPCSTR drvName, LPWINE_DRIVER d,
                                      LPWINE_MM_DRIVER lpDrv)
{
    WINEMM_msgFunc16	func;
    unsigned            count = 0;
    char    		buffer[128];
    /*
     * DESCRIPTION 'wave,aux,mixer:Creative Labs Sound Blaster 16 Driver'
     * The beginning of the module description indicates the driver supports
     * waveform, auxiliary, and mixer devices. Use one of the following
     * device-type names, followed by a colon (:) to indicate the type of
     * device your driver supports. If the driver supports more than one
     * type of device, separate each device-type name with a comma (,).
     *
     * wave for waveform audio devices
     * wavemapper for wave mappers
     * midi for MIDI audio devices
     * midimapper for midi mappers
     * aux for auxiliary audio devices
     * mixer for mixer devices
     */

    if (d->d.d16.hDriver16) {
        HMODULE16	hMod16 = GetDriverModuleHandle16(d->d.d16.hDriver16);

#define	AA(_h,_w,_x,_y,_z)					\
    func = (WINEMM_msgFunc##_y) _z ((_h), #_x);			\
    if (func != NULL) 						\
        { lpDrv->parts[_w].u.fnMessage##_y = func; count++; 	\
          TRACE("Got %d bit func '%s'\n", _y, #_x);         }

#define A(_x,_y)	AA(hMod16,_x,_y,16,GetProcAddress16)
        A(MMDRV_AUX,	auxMessage);
        A(MMDRV_MIXER,	mxdMessage);
        A(MMDRV_MIDIIN,	midMessage);
        A(MMDRV_MIDIOUT,modMessage);
        A(MMDRV_WAVEIN,	widMessage);
        A(MMDRV_WAVEOUT,wodMessage);
#undef A
#undef AA
    }
    if (TRACE_ON(winmm)) {
        if (MMDRV_GetDescription16(drvName, buffer, sizeof(buffer)))
	    TRACE("%s => %s\n", drvName, buffer);
	else
	    TRACE("%s => No description\n", drvName);
    }

    return count;
}

void    MMDRV_Init16(void)
{
#define A(_x,_y) MMDRV_InstallMap(_x, \
MMDRV_##_y##_Map32WTo16, MMDRV_##_y##_UnMap32WTo16, \
MMDRV_##_y##_Callback)
    A(MMDRV_AUX,        Aux);
    A(MMDRV_MIXER,      Mixer);
    A(MMDRV_MIDIIN,     MidiIn);
    A(MMDRV_MIDIOUT,    MidiOut);
    A(MMDRV_WAVEIN,     WaveIn);
    A(MMDRV_WAVEOUT,    WaveOut);
#undef A

    pFnCallMMDrvFunc16 = MMDRV_CallMMDrvFunc16;
    pFnLoadMMDrvFunc16 = MMDRV_LoadMMDrvFunc16;
}

/* ###################################################
 * #                DRIVER THUNKING                  #
 * ###################################################
 */
typedef	MMSYSTEM_MapType        (*MMSYSTDRV_MAPMSG)(UINT wMsg, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2);
typedef	MMSYSTEM_MapType        (*MMSYSTDRV_UNMAPMSG)(UINT wMsg, DWORD_PTR* lpParam1, DWORD_PTR* lpParam2, MMRESULT ret);
typedef void                    (*MMSYSTDRV_MAPCB)(DWORD wMsg, DWORD_PTR* dwUser, DWORD_PTR* dwParam1, DWORD_PTR* dwParam2);

#include <pshpack1.h>
#define MMSYSTDRV_MAX_THUNKS      32

static struct mmsystdrv_thunk
{
    BYTE                        popl_eax;       /* popl  %eax (return address) */
    BYTE                        pushl_func;     /* pushl $pfn16 (16bit callback function) */
    struct mmsystdrv_thunk*     this;
    BYTE                        pushl_eax;      /* pushl %eax */
    BYTE                        jmp;            /* ljmp MMDRV_Callback1632 */
    DWORD                       callback;
    DWORD                       pfn16;
    void*                       hMmdrv;         /* Handle to 32bit mmdrv object */
    enum MMSYSTEM_DriverType    kind;
} *MMSYSTDRV_Thunks;

#include <poppack.h>

static struct MMSYSTDRV_Type
{
    MMSYSTDRV_MAPMSG    mapmsg16to32W;
    MMSYSTDRV_UNMAPMSG  unmapmsg16to32W;
    MMSYSTDRV_MAPCB     mapcb;
} MMSYSTEM_DriversType[MMSYSTDRV_MAX] =
{
    {MMSYSTDRV_Mixer_Map16To32W,   MMSYSTDRV_Mixer_UnMap16To32W,   MMSYSTDRV_Mixer_MapCB},
    {MMSYSTDRV_MidiIn_Map16To32W,  MMSYSTDRV_MidiIn_UnMap16To32W,  MMSYSTDRV_MidiIn_MapCB},
    {MMSYSTDRV_MidiOut_Map16To32W, MMSYSTDRV_MidiOut_UnMap16To32W, MMSYSTDRV_MidiOut_MapCB},
    {MMSYSTDRV_WaveIn_Map16To32W,  MMSYSTDRV_WaveIn_UnMap16To32W,  MMSYSTDRV_WaveIn_MapCB},
    {MMSYSTDRV_WaveOut_Map16To32W, MMSYSTDRV_WaveOut_UnMap16To32W, MMSYSTDRV_WaveOut_MapCB},
};

/******************************************************************
 *		MMSYSTDRV_Callback3216
 *
 */
static LRESULT CALLBACK MMSYSTDRV_Callback3216(struct mmsystdrv_thunk* thunk, DWORD uFlags, HDRVR hDev,
                                               DWORD wMsg, DWORD_PTR dwUser, DWORD_PTR dwParam1,
                                               DWORD_PTR dwParam2)
{
    assert(thunk->kind < MMSYSTDRV_MAX);
    assert(MMSYSTEM_DriversType[thunk->kind].mapcb);

    MMSYSTEM_DriversType[thunk->kind].mapcb(wMsg, &dwUser, &dwParam1, &dwParam2);

    if ((uFlags & DCB_TYPEMASK) == DCB_FUNCTION)
    {
        WORD args[8];
	/* 16 bit func, call it */
	TRACE("Function (16 bit) !\n");

        args[7] = HDRVR_16(hDev);
        args[6] = wMsg;
        args[5] = HIWORD(dwUser);
        args[4] = LOWORD(dwUser);
        args[3] = HIWORD(dwParam1);
        args[2] = LOWORD(dwParam1);
        args[1] = HIWORD(dwParam2);
        args[0] = LOWORD(dwParam2);
        return WOWCallback16Ex(thunk->pfn16, WCB16_PASCAL, sizeof(args), args, NULL);
    }
    return DriverCallback(thunk->pfn16, uFlags, hDev, wMsg, dwUser, dwParam1, dwParam2);
}

/******************************************************************
 *		MMSYSTDRV_AddThunk
 *
 */
struct mmsystdrv_thunk*       MMSYSTDRV_AddThunk(DWORD pfn16, enum MMSYSTEM_DriverType kind)
{
    struct mmsystdrv_thunk* thunk;

    EnterCriticalSection(&mmdrv_cs);
    if (!MMSYSTDRV_Thunks)
    {
        MMSYSTDRV_Thunks = VirtualAlloc(NULL, MMSYSTDRV_MAX_THUNKS * sizeof(*MMSYSTDRV_Thunks),
                                        MEM_COMMIT, PAGE_EXECUTE_READWRITE);
        if (!MMSYSTDRV_Thunks)
        {
            LeaveCriticalSection(&mmdrv_cs);
            return NULL;
        }
        for (thunk = MMSYSTDRV_Thunks; thunk < &MMSYSTDRV_Thunks[MMSYSTDRV_MAX_THUNKS]; thunk++)
        {
            thunk->popl_eax     = 0x58;   /* popl  %eax */
            thunk->pushl_func   = 0x68;   /* pushl $pfn16 */
            thunk->this         = thunk;
            thunk->pushl_eax    = 0x50;   /* pushl %eax */
            thunk->jmp          = 0xe9;   /* jmp MMDRV_Callback3216 */
            thunk->callback     = (char *)MMSYSTDRV_Callback3216 - (char *)(&thunk->callback + 1);
            thunk->pfn16        = 0;
            thunk->hMmdrv       = NULL;
            thunk->kind         = MMSYSTDRV_MAX;
        }
    }
    for (thunk = MMSYSTDRV_Thunks; thunk < &MMSYSTDRV_Thunks[MMSYSTDRV_MAX_THUNKS]; thunk++)
    {
        if (thunk->pfn16 == 0 && thunk->hMmdrv == NULL)
        {
            thunk->pfn16 = pfn16;
            thunk->hMmdrv = NULL;
            thunk->kind = kind;
            LeaveCriticalSection(&mmdrv_cs);
            return thunk;
        }
    }
    LeaveCriticalSection(&mmdrv_cs);
    FIXME("Out of mmdrv-thunks. Bump MMDRV_MAX_THUNKS\n");
    return NULL;
}

/******************************************************************
 *		MMSYSTDRV_FindHandle
 *
 * Must be called with lock set
 */
static void*    MMSYSTDRV_FindHandle(void* h)
{
    struct mmsystdrv_thunk* thunk;

    for (thunk = MMSYSTDRV_Thunks; thunk < &MMSYSTDRV_Thunks[MMSYSTDRV_MAX_THUNKS]; thunk++)
    {
        if (thunk->hMmdrv == h)
        {
            if (thunk->kind >= MMSYSTDRV_MAX) FIXME("Kind isn't properly initialized %x\n", thunk->kind);
            return thunk;
        }
    }
    return NULL;
}

/******************************************************************
 *		MMSYSTDRV_SetHandle
 *
 */
void    MMSYSTDRV_SetHandle(struct mmsystdrv_thunk* thunk, void* h)
{
    if (MMSYSTDRV_FindHandle(h)) FIXME("Already has a thunk for this handle %p!!!\n", h);
    thunk->hMmdrv = h;
}

/******************************************************************
 *		MMSYSTDRV_DeleteThunk
 */
void    MMSYSTDRV_DeleteThunk(struct mmsystdrv_thunk* thunk)
{
    thunk->pfn16 = 0;
    thunk->hMmdrv = NULL;
    thunk->kind = MMSYSTDRV_MAX;
}

/******************************************************************
 *		MMSYSTDRV_CloseHandle
 */
void    MMSYSTDRV_CloseHandle(void* h)
{
    struct mmsystdrv_thunk* thunk;

    EnterCriticalSection(&mmdrv_cs);
    if ((thunk = MMSYSTDRV_FindHandle(h)))
    {
        MMSYSTDRV_DeleteThunk(thunk);
    }
    LeaveCriticalSection(&mmdrv_cs);
}

/******************************************************************
 *		MMSYSTDRV_Message
 */
DWORD   MMSYSTDRV_Message(void* h, UINT msg, DWORD_PTR param1, DWORD_PTR param2)
{
    struct mmsystdrv_thunk*     thunk = MMSYSTDRV_FindHandle(h);
    struct MMSYSTDRV_Type*      drvtype;
    MMSYSTEM_MapType            map;
    DWORD                       ret;

    if (!thunk) return MMSYSERR_INVALHANDLE;
    drvtype = &MMSYSTEM_DriversType[thunk->kind];

    map = drvtype->mapmsg16to32W(msg, &param1, &param2);
    switch (map) {
    case MMSYSTEM_MAP_NOMEM:
        ret = MMSYSERR_NOMEM;
        break;
    case MMSYSTEM_MAP_MSGERROR:
        FIXME("NIY: no conversion yet 16->32 kind=%u msg=%u\n", thunk->kind, msg);
        ret = MMSYSERR_ERROR;
        break;
    case MMSYSTEM_MAP_OK:
    case MMSYSTEM_MAP_OKMEM:
        TRACE("Calling message(msg=%u p1=0x%08lx p2=0x%08lx)\n",
              msg, param1, param2);
        switch (thunk->kind)
        {
        case MMSYSTDRV_MIXER:   ret = mixerMessage  (h, msg, param1, param2); break;
        case MMSYSTDRV_MIDIIN:  ret = midiInMessage (h, msg, param1, param2); break;
        case MMSYSTDRV_MIDIOUT: ret = midiOutMessage(h, msg, param1, param2); break;
        case MMSYSTDRV_WAVEIN:  ret = waveInMessage (h, msg, param1, param2); break;
        case MMSYSTDRV_WAVEOUT: ret = waveOutMessage(h, msg, param1, param2); break;
        default: ret = MMSYSERR_INVALHANDLE; break; /* should never be reached */
        }
        if (map == MMSYSTEM_MAP_OKMEM)
            drvtype->unmapmsg16to32W(msg, &param1, &param2, ret);
        break;
    default:
        FIXME("NIY\n");
        ret = MMSYSERR_NOTSUPPORTED;
        break;
    }
    return ret;
}