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mci.c

/*
 * MCI internal functions
 *
 * Copyright 1998/1999 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/* TODO:
 * - implement WINMM (32bit) multitasking and use it in all MCI drivers
 *   instead of the home grown one 
 * - 16bit mmTaskXXX functions are currently broken because the 16
 *   loader does not support binary command lines => provide Wine's
 *   own mmtask.tsk not using binary command line.
 * - correctly handle the MCI_ALL_DEVICE_ID in functions.
 * - finish mapping 16 <=> 32 of MCI structures and commands
 * - implement auto-open feature (ie, when a string command is issued
 *   for a not yet opened device, MCI automatically opens it) 
 * - use a default registry setting to replace the [mci] section in
 *   configuration file (layout of info in registry should be compatible
 *   with all Windows' version - which use different layouts of course)
 * - implement automatic open
 *      + only works on string interface, on regular devices (don't work on all
 *        nor custom devices)
 * - command table handling isn't thread safe
 */

/* to be cross checked:
 * - heapalloc for *sizeof(WCHAR) when needed
 * - size of string in WCHAR or bytes? (#chars for MCI_INFO, #bytes for MCI_SYSINFO)
 */

#include "config.h"
#include "wine/port.h"

#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>

#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winreg.h"
#include "mmsystem.h"
#include "winuser.h"
#include "winnls.h"
#include "winreg.h"
#include "wownt32.h"

#include "digitalv.h"
#include "winemm.h"

#include "wine/debug.h"
#include "wine/unicode.h"

WINE_DEFAULT_DEBUG_CHANNEL(mci);

WINMM_MapType  (*pFnMciMapMsg16To32W)  (WORD,WORD,DWORD*) /* = NULL */;
WINMM_MapType  (*pFnMciUnMapMsg16To32W)(WORD,WORD,DWORD) /* = NULL */;
WINMM_MapType  (*pFnMciMapMsg32WTo16)  (WORD,WORD,DWORD,DWORD*) /* = NULL */;
WINMM_MapType  (*pFnMciUnMapMsg32WTo16)(WORD,WORD,DWORD,DWORD) /* = NULL */;

/* First MCI valid device ID (0 means error) */
#define MCI_MAGIC 0x0001

/* MCI settings */
static const WCHAR wszHklmMci  [] = {'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s',' ','N','T','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\','M','C','I',0};
static const WCHAR wszNull     [] = {0};
static const WCHAR wszAll      [] = {'A','L','L',0};
static const WCHAR wszMci      [] = {'M','C','I',0};
static const WCHAR wszOpen     [] = {'o','p','e','n',0};
static const WCHAR wszSystemIni[] = {'s','y','s','t','e','m','.','i','n','i',0};

/* dup a string and uppercase it */
inline static LPWSTR str_dup_upper( LPCWSTR str )
{
    INT len = (strlenW(str) + 1) * sizeof(WCHAR);
    LPWSTR p = HeapAlloc( GetProcessHeap(), 0, len );
    if (p)
    {
        memcpy( p, str, len );
        CharUpperW( p );
    }
    return p;
}

/**************************************************************************
 *                      MCI_GetDriver                 [internal]
 */
LPWINE_MCIDRIVER  MCI_GetDriver(UINT16 wDevID)
{
    LPWINE_MCIDRIVER    wmd = 0;

    EnterCriticalSection(&WINMM_IData->cs);
    for (wmd = WINMM_IData->lpMciDrvs; wmd; wmd = wmd->lpNext) {
      if (wmd->wDeviceID == wDevID)
          break;
    }
    LeaveCriticalSection(&WINMM_IData->cs);
    return wmd;
}

/**************************************************************************
 *                      MCI_GetDriverFromString       [internal]
 */
UINT  MCI_GetDriverFromString(LPCWSTR lpstrName)
{
    LPWINE_MCIDRIVER    wmd;
    UINT          ret = 0;

    if (!lpstrName)
      return 0;

    if (!strcmpiW(lpstrName, wszAll))
      return MCI_ALL_DEVICE_ID;

    EnterCriticalSection(&WINMM_IData->cs);
    for (wmd = WINMM_IData->lpMciDrvs; wmd; wmd = wmd->lpNext) {
      if (wmd->lpstrElementName && strcmpW(wmd->lpstrElementName, lpstrName) == 0) {
          ret = wmd->wDeviceID;
          break;
      }
      if (wmd->lpstrDeviceType && strcmpiW(wmd->lpstrDeviceType, lpstrName) == 0) {
          ret = wmd->wDeviceID;
          break;
      }
      if (wmd->lpstrAlias && strcmpiW(wmd->lpstrAlias, lpstrName) == 0) {
          ret = wmd->wDeviceID;
          break;
      }
    }
    LeaveCriticalSection(&WINMM_IData->cs);

    return ret;
}

/**************************************************************************
 *                MCI_MessageToString                 [internal]
 */
const char* MCI_MessageToString(UINT wMsg)
{
    static char buffer[100];

#define CASE(s) case (s): return #s

    switch (wMsg) {
        CASE(DRV_LOAD);
        CASE(DRV_ENABLE);
        CASE(DRV_OPEN);
        CASE(DRV_CLOSE);
        CASE(DRV_DISABLE);
        CASE(DRV_FREE);
        CASE(DRV_CONFIGURE);
        CASE(DRV_QUERYCONFIGURE);
        CASE(DRV_INSTALL);
        CASE(DRV_REMOVE);
        CASE(DRV_EXITSESSION);
        CASE(DRV_EXITAPPLICATION);
        CASE(DRV_POWER);
      CASE(MCI_BREAK);
      CASE(MCI_CLOSE);
      CASE(MCI_CLOSE_DRIVER);
      CASE(MCI_COPY);
      CASE(MCI_CUE);
      CASE(MCI_CUT);
      CASE(MCI_DELETE);
      CASE(MCI_ESCAPE);
      CASE(MCI_FREEZE);
      CASE(MCI_PAUSE);
      CASE(MCI_PLAY);
      CASE(MCI_GETDEVCAPS);
      CASE(MCI_INFO);
      CASE(MCI_LOAD);
      CASE(MCI_OPEN);
      CASE(MCI_OPEN_DRIVER);
      CASE(MCI_PASTE);
      CASE(MCI_PUT);
      CASE(MCI_REALIZE);
      CASE(MCI_RECORD);
      CASE(MCI_RESUME);
      CASE(MCI_SAVE);
      CASE(MCI_SEEK);
      CASE(MCI_SET);
      CASE(MCI_SPIN);
      CASE(MCI_STATUS);
      CASE(MCI_STEP);
      CASE(MCI_STOP);
      CASE(MCI_SYSINFO);
      CASE(MCI_UNFREEZE);
      CASE(MCI_UPDATE);
      CASE(MCI_WHERE);
      CASE(MCI_WINDOW);
      /* constants for digital video */
      CASE(MCI_CAPTURE);
      CASE(MCI_MONITOR);
      CASE(MCI_RESERVE);
      CASE(MCI_SETAUDIO);
      CASE(MCI_SIGNAL);
      CASE(MCI_SETVIDEO);
      CASE(MCI_QUALITY);
      CASE(MCI_LIST);
      CASE(MCI_UNDO);
      CASE(MCI_CONFIGURE);
      CASE(MCI_RESTORE);
#undef CASE
    default:
      sprintf(buffer, "MCI_<<%04X>>", wMsg);
      return buffer;
    }
}

LPWSTR MCI_strdupAtoW( LPCSTR str )
{
    LPWSTR ret;
    INT len;

    if (!str) return NULL;
    len = MultiByteToWideChar( CP_ACP, 0, str, -1, NULL, 0 );
    ret = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
    if (ret) MultiByteToWideChar( CP_ACP, 0, str, -1, ret, len );
    return ret;
}

LPSTR MCI_strdupWtoA( LPCWSTR str )
{
    LPSTR ret;
    INT len;

    if (!str) return NULL;
    len = WideCharToMultiByte( CP_ACP, 0, str, -1, NULL, 0, NULL, NULL );
    ret = HeapAlloc( GetProcessHeap(), 0, len );
    if (ret) WideCharToMultiByte( CP_ACP, 0, str, -1, ret, len, NULL, NULL );
    return ret;
}

static int MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2)
{
    if (msg < DRV_RESERVED) return 0;

    switch (msg)
    {
    case MCI_CLOSE:
    case MCI_CONFIGURE:
    case MCI_PLAY:
    case MCI_SEEK:
    case MCI_STOP:
    case MCI_PAUSE:
    case MCI_GETDEVCAPS:
    case MCI_SPIN:
    case MCI_SET:
    case MCI_STEP:
    case MCI_RECORD:
    case MCI_BREAK:
    case MCI_SOUND:
    case MCI_STATUS:
    case MCI_CUE:
    case MCI_REALIZE:
    case MCI_PUT:
    case MCI_WHERE:
    case MCI_FREEZE:
    case MCI_UNFREEZE:
    case MCI_CUT:
    case MCI_COPY:
    case MCI_PASTE:
    case MCI_UPDATE:
    case MCI_RESUME:
    case MCI_DELETE:
    case MCI_MONITOR:
    case MCI_SETAUDIO:
    case MCI_SIGNAL:
    case MCI_SETVIDEO:
    case MCI_LIST:
        return 0;

    case MCI_OPEN:
        {
            MCI_OPEN_PARMSA *mci_openA = (MCI_OPEN_PARMSA*)*dwParam2;
            MCI_OPEN_PARMSW *mci_openW;
            DWORD_PTR *ptr;

            ptr = HeapAlloc(GetProcessHeap(), 0, sizeof(DWORD_PTR) + sizeof(*mci_openW) + 2 * sizeof(DWORD));
            if (!ptr) return -1;

            *ptr++ = *dwParam2; /* save the previous pointer */
            *dwParam2 = (DWORD_PTR)ptr;
            mci_openW = (MCI_OPEN_PARMSW *)ptr;

            if (dwParam1 & MCI_NOTIFY)
                mci_openW->dwCallback = mci_openA->dwCallback;

            if (dwParam1 & MCI_OPEN_TYPE)
            {
                if (dwParam1 & MCI_OPEN_TYPE_ID)
                    mci_openW->lpstrDeviceType = (LPWSTR)mci_openA->lpstrDeviceType;
                else
                    mci_openW->lpstrDeviceType = MCI_strdupAtoW(mci_openA->lpstrDeviceType);
            }
            if (dwParam1 & MCI_OPEN_ELEMENT)
            {
                if (dwParam1 & MCI_OPEN_ELEMENT_ID)
                    mci_openW->lpstrElementName = (LPWSTR)mci_openA->lpstrElementName;
                else
                    mci_openW->lpstrElementName = MCI_strdupAtoW(mci_openA->lpstrElementName);
            }
            if (dwParam1 & MCI_OPEN_ALIAS)
                mci_openW->lpstrAlias = MCI_strdupAtoW(mci_openA->lpstrAlias);
            /* FIXME: this is only needed for specific types of MCI devices, and
             * may cause a segfault if the two DWORD:s don't exist at the end of 
             * mci_openA
             */
            memcpy(mci_openW + 1, mci_openA + 1, 2 * sizeof(DWORD));
        }
        return 1;

    case MCI_WINDOW:
        if (dwParam1 & MCI_ANIM_WINDOW_TEXT)
        {
            MCI_ANIM_WINDOW_PARMSA *mci_windowA = (MCI_ANIM_WINDOW_PARMSA *)*dwParam2;
            MCI_ANIM_WINDOW_PARMSW *mci_windowW;

            mci_windowW = HeapAlloc(GetProcessHeap(), 0, sizeof(*mci_windowW));
            if (!mci_windowW) return -1;

            *dwParam2 = (DWORD_PTR)mci_windowW;

            mci_windowW->lpstrText = MCI_strdupAtoW(mci_windowA->lpstrText);

            if (dwParam1 & MCI_NOTIFY)
                mci_windowW->dwCallback = mci_windowA->dwCallback;
            if (dwParam1 & MCI_ANIM_WINDOW_HWND)
                mci_windowW->hWnd = mci_windowA->hWnd;
            if (dwParam1 & MCI_ANIM_WINDOW_STATE)
                mci_windowW->nCmdShow = mci_windowA->nCmdShow;

            return 1;
        }
        return 0;

    case MCI_SYSINFO:
        {
            MCI_SYSINFO_PARMSA *mci_sysinfoA = (MCI_SYSINFO_PARMSA *)*dwParam2;
            MCI_SYSINFO_PARMSW *mci_sysinfoW;
            DWORD_PTR *ptr;

            ptr = HeapAlloc(GetProcessHeap(), 0, sizeof(*mci_sysinfoW) + sizeof(DWORD_PTR));
            if (!ptr) return -1;

            *ptr++ = *dwParam2; /* save the previous pointer */
            *dwParam2 = (DWORD_PTR)ptr;
            mci_sysinfoW = (MCI_SYSINFO_PARMSW *)ptr;

            if (dwParam1 & MCI_NOTIFY)
                mci_sysinfoW->dwCallback = mci_sysinfoA->dwCallback;

            mci_sysinfoW->dwRetSize = mci_sysinfoA->dwRetSize;
            mci_sysinfoW->lpstrReturn = HeapAlloc(GetProcessHeap(), 0, mci_sysinfoW->dwRetSize);
            mci_sysinfoW->dwNumber = mci_sysinfoA->dwNumber;
            mci_sysinfoW->wDeviceType = mci_sysinfoA->wDeviceType;
            return 1;
        }
    case MCI_INFO:
        {
            MCI_INFO_PARMSA *mci_infoA = (MCI_INFO_PARMSA *)*dwParam2;
            MCI_INFO_PARMSW *mci_infoW;
            DWORD_PTR *ptr;

            ptr = HeapAlloc(GetProcessHeap(), 0, sizeof(*mci_infoW) + sizeof(DWORD_PTR));
            if (!ptr) return -1;

            *ptr++ = *dwParam2; /* save the previous pointer */
            *dwParam2 = (DWORD_PTR)ptr;
            mci_infoW = (MCI_INFO_PARMSW *)ptr;

            if (dwParam1 & MCI_NOTIFY)
                mci_infoW->dwCallback = mci_infoA->dwCallback;

            mci_infoW->dwRetSize = mci_infoA->dwRetSize * sizeof(WCHAR); /* it's not the same as SYSINFO !!! */
            mci_infoW->lpstrReturn = HeapAlloc(GetProcessHeap(), 0, mci_infoW->dwRetSize);
            return 1;
        }
    case MCI_SAVE:
        {
            MCI_SAVE_PARMSA *mci_saveA = (MCI_SAVE_PARMSA *)*dwParam2;
            MCI_SAVE_PARMSW *mci_saveW;

            mci_saveW = HeapAlloc(GetProcessHeap(), 0, sizeof(*mci_saveW));
            if (!mci_saveW) return -1;

            *dwParam2 = (DWORD_PTR)mci_saveW;
            if (dwParam1 & MCI_NOTIFY)
                mci_saveW->dwCallback = mci_saveA->dwCallback;
            mci_saveW->lpfilename = MCI_strdupAtoW(mci_saveA->lpfilename);
            return 1;
        }
    case MCI_LOAD:
        {
            MCI_LOAD_PARMSA *mci_loadA = (MCI_LOAD_PARMSA *)*dwParam2;
            MCI_LOAD_PARMSW *mci_loadW;

            mci_loadW = HeapAlloc(GetProcessHeap(), 0, sizeof(*mci_loadW));
            if (!mci_loadW) return -1;

            *dwParam2 = (DWORD_PTR)mci_loadW;
            if (dwParam1 & MCI_NOTIFY)
                mci_loadW->dwCallback = mci_loadA->dwCallback;
            mci_loadW->lpfilename = MCI_strdupAtoW(mci_loadA->lpfilename);
            return 1;
        }

    case MCI_ESCAPE:
        {
            MCI_VD_ESCAPE_PARMSA *mci_vd_escapeA = (MCI_VD_ESCAPE_PARMSA *)*dwParam2;
            MCI_VD_ESCAPE_PARMSW *mci_vd_escapeW;

            mci_vd_escapeW = HeapAlloc(GetProcessHeap(), 0, sizeof(*mci_vd_escapeW));
            if (!mci_vd_escapeW) return -1;

            *dwParam2 = (DWORD_PTR)mci_vd_escapeW;
            if (dwParam1 & MCI_NOTIFY)
                mci_vd_escapeW->dwCallback = mci_vd_escapeA->dwCallback;
            mci_vd_escapeW->lpstrCommand = MCI_strdupAtoW(mci_vd_escapeA->lpstrCommand);
            return 1;
        }
    default:
        FIXME("Message %s needs translation\n", MCI_MessageToString(msg));
        return -1;
    }
}

static DWORD MCI_UnmapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR dwParam2,
                              DWORD result)
{
    switch (msg)
    {
    case MCI_OPEN:
        {
            DWORD_PTR *ptr = (DWORD_PTR *)dwParam2 - 1;
            MCI_OPEN_PARMSA *mci_openA = (MCI_OPEN_PARMSA *)*ptr;
            MCI_OPEN_PARMSW *mci_openW = (MCI_OPEN_PARMSW *)(ptr + 1);

            mci_openA->wDeviceID = mci_openW->wDeviceID;

            if (dwParam1 & MCI_OPEN_TYPE)
            {
                if (!(dwParam1 & MCI_OPEN_TYPE_ID))
                    HeapFree(GetProcessHeap(), 0, mci_openW->lpstrDeviceType);
            }
            if (dwParam1 & MCI_OPEN_ELEMENT)
            {
                if (!(dwParam1 & MCI_OPEN_ELEMENT_ID))
                    HeapFree(GetProcessHeap(), 0, mci_openW->lpstrElementName);
            }
            if (dwParam1 & MCI_OPEN_ALIAS)
                HeapFree(GetProcessHeap(), 0, mci_openW->lpstrAlias);
            HeapFree(GetProcessHeap(), 0, ptr);
        }
        break;
    case MCI_WINDOW:
        if (dwParam1 & MCI_ANIM_WINDOW_TEXT)
        {
            MCI_ANIM_WINDOW_PARMSW *mci_windowW = (MCI_ANIM_WINDOW_PARMSW *)dwParam2;

            HeapFree(GetProcessHeap(), 0, (void*)mci_windowW->lpstrText);
            HeapFree(GetProcessHeap(), 0, mci_windowW);
        }
        break;

    case MCI_SYSINFO:
        {
            DWORD_PTR *ptr = (DWORD_PTR *)dwParam2 - 1;
            MCI_SYSINFO_PARMSA *mci_sysinfoA = (MCI_SYSINFO_PARMSA *)*ptr;
            MCI_SYSINFO_PARMSW *mci_sysinfoW = (MCI_SYSINFO_PARMSW *)(ptr + 1);

            if (!result)
            {
                mci_sysinfoA->dwNumber = mci_sysinfoW->dwNumber;
                mci_sysinfoA->wDeviceType = mci_sysinfoW->wDeviceType;
                if (dwParam1 & MCI_SYSINFO_QUANTITY)
                    *(DWORD*)mci_sysinfoA->lpstrReturn = *(DWORD*)mci_sysinfoW->lpstrReturn;
                else
                    WideCharToMultiByte(CP_ACP, 0,
                                        mci_sysinfoW->lpstrReturn, mci_sysinfoW->dwRetSize,
                                        mci_sysinfoA->lpstrReturn, mci_sysinfoA->dwRetSize,
                                        NULL, NULL);
            }

            HeapFree(GetProcessHeap(), 0, mci_sysinfoW->lpstrReturn);
            HeapFree(GetProcessHeap(), 0, ptr);
        }
        break;
    case MCI_INFO:
        {
            DWORD_PTR *ptr = (DWORD_PTR *)dwParam2 - 1;
            MCI_INFO_PARMSA *mci_infoA = (MCI_INFO_PARMSA *)*ptr;
            MCI_INFO_PARMSW *mci_infoW = (MCI_INFO_PARMSW *)(ptr + 1);

            if (!result)
            {
                WideCharToMultiByte(CP_ACP, 0,
                                    mci_infoW->lpstrReturn, mci_infoW->dwRetSize / sizeof(WCHAR),
                                    mci_infoA->lpstrReturn, mci_infoA->dwRetSize,
                                    NULL, NULL);
            }

            HeapFree(GetProcessHeap(), 0, mci_infoW->lpstrReturn);
            HeapFree(GetProcessHeap(), 0, ptr);
        }
        break;
    case MCI_SAVE:
        {
            MCI_SAVE_PARMSW *mci_saveW = (MCI_SAVE_PARMSW *)dwParam2;

            HeapFree(GetProcessHeap(), 0, (void*)mci_saveW->lpfilename);
            HeapFree(GetProcessHeap(), 0, mci_saveW);
        }
        break;
    case MCI_LOAD:
        {
            MCI_LOAD_PARMSW *mci_loadW = (MCI_LOAD_PARMSW *)dwParam2;

            HeapFree(GetProcessHeap(), 0, (void*)mci_loadW->lpfilename);
            HeapFree(GetProcessHeap(), 0, mci_loadW);
        }
        break;
    case MCI_ESCAPE:
        {
            MCI_VD_ESCAPE_PARMSW *mci_vd_escapeW = (MCI_VD_ESCAPE_PARMSW *)dwParam2;

            HeapFree(GetProcessHeap(), 0, (void*)mci_vd_escapeW->lpstrCommand);
            HeapFree(GetProcessHeap(), 0, mci_vd_escapeW);
        }
        break;

    default:
        FIXME("Message %s needs unmapping\n", MCI_MessageToString(msg));
        break;
    }

    return result;
}

/**************************************************************************
 *                      MCI_GetDevTypeFromFileName    [internal]
 */
static      DWORD MCI_GetDevTypeFromFileName(LPCWSTR fileName, LPCWSTR buf, UINT len)
{
    LPCWSTR tmp;
    HKEY    hKey;
    static const WCHAR keyW[] = {'S','O','F','T','W','A','R','E','\\','M','i','c','r','o','s','o','f','t','\\',
                                 'W','i','n','d','o','w','s',' ','N','T','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
                                 'M','C','I',' ','E','x','t','e','n','s','i','o','n','s',0};
    if ((tmp = strrchrW(fileName, '.'))) {
      if (RegOpenKeyExW( HKEY_LOCAL_MACHINE, keyW,
                     0, KEY_QUERY_VALUE, &hKey ) == ERROR_SUCCESS) {
          DWORD dwLen = len;
          LONG lRet = RegQueryValueExW( hKey, tmp + 1, 0, 0, (void*)buf, &dwLen ); 
          RegCloseKey( hKey );
          if (lRet == ERROR_SUCCESS) return 0;
        }
      TRACE("No ...\\MCI Extensions entry for %s found.\n", debugstr_w(tmp));
    }
    return MCIERR_EXTENSION_NOT_FOUND;
}

#define     MAX_MCICMDTABLE               20
#define MCI_COMMAND_TABLE_NOT_LOADED      0xFFFE

typedef struct tagWINE_MCICMDTABLE {
    UINT          uDevType;
    const BYTE*         lpTable;
    UINT          nVerbs;           /* number of verbs in command table */
    LPCWSTR*            aVerbs;           /* array of verbs to speed up the verb look up process */
} WINE_MCICMDTABLE, *LPWINE_MCICMDTABLE;

static WINE_MCICMDTABLE S_MciCmdTable[MAX_MCICMDTABLE];

/**************************************************************************
 *                      MCI_IsCommandTableValid       [internal]
 */
static      BOOL        MCI_IsCommandTableValid(UINT uTbl)
{
    const BYTE* lmem;
    LPCWSTR     str;
    DWORD   flg;
    WORD    eid;
    int           idx = 0;
    BOOL    inCst = FALSE;

    TRACE("Dumping cmdTbl=%d [lpTable=%p devType=%d]\n",
        uTbl, S_MciCmdTable[uTbl].lpTable, S_MciCmdTable[uTbl].uDevType);

    if (uTbl >= MAX_MCICMDTABLE || !S_MciCmdTable[uTbl].lpTable)
      return FALSE;

    lmem = S_MciCmdTable[uTbl].lpTable;
    do {
        str = (LPCWSTR)lmem;
        lmem += (strlenW(str) + 1) * sizeof(WCHAR);
        flg = *(const DWORD*)lmem;
        eid = *(const WORD*)(lmem + sizeof(DWORD));
        lmem += sizeof(DWORD) + sizeof(WORD);
        idx ++;
        /* TRACE("cmd=%s %08lx %04x\n", debugstr_w(str), flg, eid); */
        switch (eid) {
        case MCI_COMMAND_HEAD:          if (!*str || !flg) return FALSE; idx = 0;         break;      /* check unicity of str in table */
        case MCI_STRING:                if (inCst) return FALSE;                    break;
        case MCI_INTEGER:               if (!*str) return FALSE;                    break;
        case MCI_END_COMMAND:           if (*str || flg || idx == 0) return FALSE; idx = 0;     break;
        case MCI_RETURN:            if (*str || idx != 1) return FALSE;             break;
        case MCI_FLAG:                if (!*str) return FALSE;                      break;
        case MCI_END_COMMAND_LIST:  if (*str || flg) return FALSE;      idx = 0;          break;
        case MCI_RECT:                if (!*str || inCst) return FALSE;             break;
        case MCI_CONSTANT:              if (inCst) return FALSE; inCst = TRUE;                  break;
        case MCI_END_CONSTANT:              if (*str || flg || !inCst) return FALSE; inCst = FALSE; break;
        default:              return FALSE;
        }
    } while (eid != MCI_END_COMMAND_LIST);
    return TRUE;
}

/**************************************************************************
 *                      MCI_DumpCommandTable          [internal]
 */
static      BOOL        MCI_DumpCommandTable(UINT uTbl)
{
    const BYTE*   lmem;
    LPCWSTR str;
    DWORD   flg;
    WORD    eid;

    if (!MCI_IsCommandTableValid(uTbl)) {
      ERR("Ooops: %d is not valid\n", uTbl);
      return FALSE;
    }

    lmem = S_MciCmdTable[uTbl].lpTable;
    do {
      do {
          str = (LPCWSTR)lmem;
          lmem += (strlenW(str) + 1) * sizeof(WCHAR);
          flg = *(const DWORD*)lmem;
          eid = *(const WORD*)(lmem + sizeof(DWORD));
            /* TRACE("cmd=%s %08lx %04x\n", debugstr_w(str), flg, eid); */
          lmem += sizeof(DWORD) + sizeof(WORD);
      } while (eid != MCI_END_COMMAND && eid != MCI_END_COMMAND_LIST);
        /* EPP TRACE(" => end of command%s\n", (eid == MCI_END_COMMAND_LIST) ? " list" : ""); */
    } while (eid != MCI_END_COMMAND_LIST);
    return TRUE;
}


/**************************************************************************
 *                      MCI_GetCommandTable           [internal]
 */
static      UINT        MCI_GetCommandTable(UINT uDevType)
{
    UINT    uTbl;
    WCHAR   buf[32];
    LPCWSTR str = NULL;

    /* first look up existing for existing devType */
    for (uTbl = 0; uTbl < MAX_MCICMDTABLE; uTbl++) {
      if (S_MciCmdTable[uTbl].lpTable && S_MciCmdTable[uTbl].uDevType == uDevType)
          return uTbl;
    }

    /* well try to load id */
    if (uDevType >= MCI_DEVTYPE_FIRST && uDevType <= MCI_DEVTYPE_LAST) {
      if (LoadStringW(WINMM_IData->hWinMM32Instance, uDevType, buf, sizeof(buf) / sizeof(WCHAR))) {
          str = buf;
      }
    } else if (uDevType == 0) {
        static const WCHAR wszCore[] = {'C','O','R','E',0};
      str = wszCore;
    }
    uTbl = MCI_NO_COMMAND_TABLE;
    if (str) {
      HRSRC       hRsrc = FindResourceW(WINMM_IData->hWinMM32Instance, str, (LPCWSTR)RT_RCDATA);
      HANDLE      hMem = 0;

      if (hRsrc) hMem = LoadResource(WINMM_IData->hWinMM32Instance, hRsrc);
      if (hMem) {
          uTbl = MCI_SetCommandTable(LockResource(hMem), uDevType);
      } else {
          WARN("No command table found in resource %p[%s]\n",
             WINMM_IData->hWinMM32Instance, debugstr_w(str));
      }
    }
    TRACE("=> %d\n", uTbl);
    return uTbl;
}

/**************************************************************************
 *                      MCI_SetCommandTable           [internal]
 */
UINT MCI_SetCommandTable(void *table, UINT uDevType)
{
    int                   uTbl;
    static  BOOL  bInitDone = FALSE;

    /* <HACK>
     * The CORE command table must be loaded first, so that MCI_GetCommandTable()
     * can be called with 0 as a uDevType to retrieve it.
     * </HACK>
     */
    if (!bInitDone) {
      bInitDone = TRUE;
      MCI_GetCommandTable(0);
    }
    TRACE("(%p, %u)\n", table, uDevType);
    for (uTbl = 0; uTbl < MAX_MCICMDTABLE; uTbl++) {
      if (!S_MciCmdTable[uTbl].lpTable) {
          const BYTE* lmem;
          LPCWSTR       str;
          WORD    eid;
          WORD    count;

          S_MciCmdTable[uTbl].uDevType = uDevType;
          S_MciCmdTable[uTbl].lpTable = table;

          if (TRACE_ON(mci)) {
            MCI_DumpCommandTable(uTbl);
          }

          /* create the verbs table */
          /* get # of entries */
          lmem = S_MciCmdTable[uTbl].lpTable;
          count = 0;
          do {
            str = (LPCWSTR)lmem;
            lmem += (strlenW(str) + 1) * sizeof(WCHAR);
            eid = *(const WORD*)(lmem + sizeof(DWORD));
            lmem += sizeof(DWORD) + sizeof(WORD);
            if (eid == MCI_COMMAND_HEAD)
                count++;
          } while (eid != MCI_END_COMMAND_LIST);

          S_MciCmdTable[uTbl].aVerbs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(LPCWSTR));
          S_MciCmdTable[uTbl].nVerbs = count;

          lmem = S_MciCmdTable[uTbl].lpTable;
          count = 0;
          do {
            str = (LPCWSTR)lmem;
            lmem += (strlenW(str) + 1) * sizeof(WCHAR);
            eid = *(const WORD*)(lmem + sizeof(DWORD));
            lmem += sizeof(DWORD) + sizeof(WORD);
            if (eid == MCI_COMMAND_HEAD)
                S_MciCmdTable[uTbl].aVerbs[count++] = str;
          } while (eid != MCI_END_COMMAND_LIST);
          /* assert(count == S_MciCmdTable[uTbl].nVerbs); */
          return uTbl;
      }
    }

    return MCI_NO_COMMAND_TABLE;
}

/**************************************************************************
 *                      MCI_DeleteCommandTable        [internal]
 */
BOOL  MCI_DeleteCommandTable(UINT uTbl, BOOL delete)
{
    if (uTbl >= MAX_MCICMDTABLE || !S_MciCmdTable[uTbl].lpTable)
      return FALSE;

    if (delete) HeapFree(GetProcessHeap(), 0, (void*)S_MciCmdTable[uTbl].lpTable);
    S_MciCmdTable[uTbl].lpTable = NULL;
    HeapFree(GetProcessHeap(), 0, S_MciCmdTable[uTbl].aVerbs);
    S_MciCmdTable[uTbl].aVerbs = 0;
    return TRUE;
}

/**************************************************************************
 *                      MCI_UnLoadMciDriver           [internal]
 */
static      BOOL  MCI_UnLoadMciDriver(LPWINE_MCIDRIVER wmd)
{
    LPWINE_MCIDRIVER*         tmp;

    if (!wmd)
      return TRUE;

    CloseDriver(wmd->hDriver, 0, 0);

    if (wmd->dwPrivate != 0)
      WARN("Unloading mci driver with non nul dwPrivate field\n");

    EnterCriticalSection(&WINMM_IData->cs);
    for (tmp = &WINMM_IData->lpMciDrvs; *tmp; tmp = &(*tmp)->lpNext) {
      if (*tmp == wmd) {
          *tmp = wmd->lpNext;
          break;
      }
    }
    LeaveCriticalSection(&WINMM_IData->cs);

    HeapFree(GetProcessHeap(), 0, wmd->lpstrDeviceType);
    HeapFree(GetProcessHeap(), 0, wmd->lpstrAlias);
    HeapFree(GetProcessHeap(), 0, wmd->lpstrElementName);

    HeapFree(GetProcessHeap(), 0, wmd);
    return TRUE;
}

/**************************************************************************
 *                      MCI_OpenMciDriver       [internal]
 */
static      BOOL  MCI_OpenMciDriver(LPWINE_MCIDRIVER wmd, LPCWSTR drvTyp, LPARAM lp)
{
    WCHAR   libName[128];

    if (!DRIVER_GetLibName(drvTyp, wszMci, libName, sizeof(libName)))
      return FALSE;

    wmd->bIs32 = 0xFFFF;
    /* First load driver */
    if ((wmd->hDriver = (HDRVR)DRIVER_TryOpenDriver32(libName, lp))) {
      wmd->bIs32 = TRUE;
    } else if (WINMM_CheckForMMSystem() && pFnMciMapMsg32WTo16) {
      WINMM_MapType     res;

      switch (res = pFnMciMapMsg32WTo16(0, DRV_OPEN, 0, &lp)) {
      case WINMM_MAP_MSGERROR:
          TRACE("Not handled yet (DRV_OPEN)\n");
          break;
      case WINMM_MAP_NOMEM:
          TRACE("Problem mapping msg=DRV_OPEN from 32W to 16\n");
          break;
      case WINMM_MAP_OK:
      case WINMM_MAP_OKMEM:
          if ((wmd->hDriver = OpenDriver(drvTyp, wszMci, lp)))
            wmd->bIs32 = FALSE;
          if (res == WINMM_MAP_OKMEM)
            pFnMciUnMapMsg32WTo16(0, DRV_OPEN, 0, lp);
          break;
      }
    }
    return (wmd->bIs32 == 0xFFFF) ? FALSE : TRUE;
}

/**************************************************************************
 *                      MCI_LoadMciDriver       [internal]
 */
static      DWORD MCI_LoadMciDriver(LPCWSTR _strDevTyp, LPWINE_MCIDRIVER* lpwmd)
{
    LPWSTR              strDevTyp = str_dup_upper(_strDevTyp);
    LPWINE_MCIDRIVER          wmd = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*wmd));
    MCI_OPEN_DRIVER_PARMSW    modp;
    DWORD               dwRet = 0;

    if (!wmd || !strDevTyp) {
      dwRet = MCIERR_OUT_OF_MEMORY;
      goto errCleanUp;
    }

    wmd->lpfnYieldProc = MCI_DefYieldProc;
    wmd->dwYieldData = VK_CANCEL;
    wmd->CreatorThread = GetCurrentThreadId();

    EnterCriticalSection(&WINMM_IData->cs);
    /* wmd must be inserted in list before sending opening the driver, coz' it
     * may want to lookup at wDevID
     */
    wmd->lpNext = WINMM_IData->lpMciDrvs;
    WINMM_IData->lpMciDrvs = wmd;

    for (modp.wDeviceID = MCI_MAGIC;
       MCI_GetDriver(modp.wDeviceID) != 0;
       modp.wDeviceID++);

    wmd->wDeviceID = modp.wDeviceID;

    LeaveCriticalSection(&WINMM_IData->cs);

    TRACE("wDevID=%04X \n", modp.wDeviceID);

    modp.lpstrParams = NULL;

    if (!MCI_OpenMciDriver(wmd, strDevTyp, (LPARAM)&modp)) {
      /* silence warning if all is used... some bogus program use commands like
       * 'open all'...
       */
      if (strcmpiW(strDevTyp, wszAll) == 0) {
          dwRet = MCIERR_CANNOT_USE_ALL;
      } else {
          FIXME("Couldn't load driver for type %s.\n"
              "If you don't have a windows installation accessible from Wine,\n"
              "you perhaps forgot to create a [mci] section in system.ini\n",
              debugstr_w(strDevTyp));
          dwRet = MCIERR_DEVICE_NOT_INSTALLED;
      }
      goto errCleanUp;
    }

    /* FIXME: should also check that module's description is of the form
     * MODULENAME:[MCI] comment
     */

    /* some drivers will return 0x0000FFFF, some others 0xFFFFFFFF */
    wmd->uSpecificCmdTable = LOWORD(modp.wCustomCommandTable);
    wmd->uTypeCmdTable = MCI_COMMAND_TABLE_NOT_LOADED;

    TRACE("Loaded driver %p (%s), type is %d, cmdTable=%08x\n",
        wmd->hDriver, debugstr_w(strDevTyp), modp.wType, modp.wCustomCommandTable);

    wmd->lpstrDeviceType = strDevTyp;
    wmd->wType = modp.wType;

    TRACE("mcidev=%d, uDevTyp=%04X wDeviceID=%04X !\n",
        modp.wDeviceID, modp.wType, modp.wDeviceID);
    *lpwmd = wmd;
    return 0;
errCleanUp:
    MCI_UnLoadMciDriver(wmd);
    HeapFree(GetProcessHeap(), 0, strDevTyp);
    *lpwmd = 0;
    return dwRet;
}

/**************************************************************************
 *                MCI_FinishOpen                      [internal]
 */
static      DWORD MCI_FinishOpen(LPWINE_MCIDRIVER wmd, LPMCI_OPEN_PARMSW lpParms,
                         DWORD dwParam)
{
    if (dwParam & MCI_OPEN_ELEMENT)
    {
        wmd->lpstrElementName = HeapAlloc(GetProcessHeap(),0,(strlenW(lpParms->lpstrElementName)+1) * sizeof(WCHAR));
        strcpyW( wmd->lpstrElementName, lpParms->lpstrElementName );
    }
    if (dwParam & MCI_OPEN_ALIAS)
    {
        wmd->lpstrAlias = HeapAlloc(GetProcessHeap(), 0, (strlenW(lpParms->lpstrAlias)+1) * sizeof(WCHAR));
        strcpyW( wmd->lpstrAlias, lpParms->lpstrAlias);
    }
    lpParms->wDeviceID = wmd->wDeviceID;

    return MCI_SendCommandFrom32(wmd->wDeviceID, MCI_OPEN_DRIVER, dwParam,
                         (DWORD)lpParms);
}

/**************************************************************************
 *                      MCI_FindCommand         [internal]
 */
static      LPCWSTR           MCI_FindCommand(UINT uTbl, LPCWSTR verb)
{
    UINT    idx;

    if (uTbl >= MAX_MCICMDTABLE || !S_MciCmdTable[uTbl].lpTable)
      return NULL;

    /* another improvement would be to have the aVerbs array sorted,
     * so that we could use a dichotomic search on it, rather than this dumb
     * array look up
     */
    for (idx = 0; idx < S_MciCmdTable[uTbl].nVerbs; idx++) {
      if (strcmpiW(S_MciCmdTable[uTbl].aVerbs[idx], verb) == 0)
          return S_MciCmdTable[uTbl].aVerbs[idx];
    }

    return NULL;
}

/**************************************************************************
 *                      MCI_GetReturnType       [internal]
 */
static      DWORD       MCI_GetReturnType(LPCWSTR lpCmd)
{
    lpCmd = (LPCWSTR)((BYTE*)(lpCmd + strlenW(lpCmd) + 1) + sizeof(DWORD) + sizeof(WORD));
    if (*lpCmd == '\0' && *(const WORD*)((BYTE*)(lpCmd + 1) + sizeof(DWORD)) == MCI_RETURN) {
      return *(const DWORD*)(lpCmd + 1);
    }
    return 0L;
}

/**************************************************************************
 *                      MCI_GetMessage                [internal]
 */
static      WORD        MCI_GetMessage(LPCWSTR lpCmd)
{
    return (WORD)*(const DWORD*)(lpCmd + strlenW(lpCmd) + 1);
}

/**************************************************************************
 *                      MCI_GetDWord                  [internal]
 */
static      BOOL        MCI_GetDWord(LPDWORD data, LPWSTR* ptr)
{
    DWORD   val;
    LPWSTR  ret;

    val = strtoulW(*ptr, &ret, 0);

    switch (*ret) {
    case '\0':    break;
    case ' ':     ret++; break;
    default:      return FALSE;
    }

    *data |= val;
    *ptr = ret;
    return TRUE;
}

/**************************************************************************
 *                      MCI_GetString           [internal]
 */
static      DWORD MCI_GetString(LPWSTR* str, LPWSTR* args)
{
    LPWSTR      ptr = *args;

    /* see if we have a quoted string */
    if (*ptr == '"') {
      ptr = strchrW(*str = ptr + 1, '"');
      if (!ptr) return MCIERR_NO_CLOSING_QUOTE;
      /* FIXME: shall we escape \" from string ?? */
      if (ptr[-1] == '\\') TRACE("Ooops: un-escaped \"\n");
      *ptr++ = '\0'; /* remove trailing " */
      if (*ptr != ' ' && *ptr != '\0') return MCIERR_EXTRA_CHARACTERS;
      *ptr++ = '\0';
    } else {
      ptr = strchrW(ptr, ' ');

      if (ptr) {
          *ptr++ = '\0';
      } else {
          ptr = *args + strlenW(*args);
      }
      *str = *args;
    }

    *args = ptr;
    return 0;
}

#define     MCI_DATA_SIZE     16

/**************************************************************************
 *                      MCI_ParseOptArgs        [internal]
 */
static      DWORD MCI_ParseOptArgs(LPDWORD data, int _offset, LPCWSTR lpCmd,
                         LPWSTR args, LPDWORD dwFlags)
{
    int           len, offset;
    const char* lmem;
    LPCWSTR     str;
    DWORD   dwRet, flg, cflg = 0;
    WORD    eid;
    BOOL    inCst, found;

    /* loop on arguments */
    while (*args) {
      lmem = (const char*)lpCmd;
      found = inCst = FALSE;
      offset = _offset;

      /* skip any leading white space(s) */
      while (*args == ' ') args++;
      TRACE("args=%s offset=%d\n", debugstr_w(args), offset);

      do { /* loop on options for command table for the requested verb */
          str = (LPCWSTR)lmem;
          lmem += ((len = strlenW(str)) + 1) * sizeof(WCHAR);
          flg = *(const DWORD*)lmem;
          eid = *(const WORD*)(lmem + sizeof(DWORD));
          lmem += sizeof(DWORD) + sizeof(WORD);
            /* TRACE("\tcmd=%s inCst=%c eid=%04x\n", debugstr_w(str), inCst ? 'Y' : 'N', eid); */

          switch (eid) {
          case MCI_CONSTANT:
            inCst = TRUE;     cflg = flg; break;
          case MCI_END_CONSTANT:
            /* there may be additional integral values after flag in constant */
            if (inCst && MCI_GetDWord(&(data[offset]), &args)) {
                *dwFlags |= cflg;
            }
            inCst = FALSE;    cflg = 0;
            break;
          }

          if (strncmpiW(args, str, len) == 0 &&
            (args[len] == 0 || args[len] == ' ')) {
            /* store good values into data[] */
            args += len;
            while (*args == ' ') args++;
            found = TRUE;

            switch (eid) {
            case MCI_COMMAND_HEAD:
            case MCI_RETURN:
            case MCI_END_COMMAND:
            case MCI_END_COMMAND_LIST:
            case MCI_CONSTANT:      /* done above */
            case MCI_END_CONSTANT:  /* done above */
                break;
            case MCI_FLAG:
                *dwFlags |= flg;
                break;
            case MCI_INTEGER:
                if (inCst) {
                  data[offset] |= flg;
                  *dwFlags |= cflg;
                  inCst = FALSE;
                } else {
                  *dwFlags |= flg;
                  if (!MCI_GetDWord(&(data[offset]), &args)) {
                      return MCIERR_BAD_INTEGER;
                  }
                }
                break;
            case MCI_RECT:
                /* store rect in data (offset...offset+3) */
                *dwFlags |= flg;
                if (!MCI_GetDWord(&(data[offset+0]), &args) ||
                  !MCI_GetDWord(&(data[offset+1]), &args) ||
                  !MCI_GetDWord(&(data[offset+2]), &args) ||
                  !MCI_GetDWord(&(data[offset+3]), &args)) {
                  ERR("Bad rect %s\n", debugstr_w(args));
                  return MCIERR_BAD_INTEGER;
                }
                break;
            case MCI_STRING:
                *dwFlags |= flg;
                if ((dwRet = MCI_GetString((LPWSTR*)&data[offset], &args)))
                  return dwRet;
                break;
            default:    ERR("oops\n");
            }
            /* exit inside while loop, except if just entered in constant area definition */
            if (!inCst || eid != MCI_CONSTANT) eid = MCI_END_COMMAND;
          } else {
            /* have offset incremented if needed */
            switch (eid) {
            case MCI_COMMAND_HEAD:
            case MCI_RETURN:
            case MCI_END_COMMAND:
            case MCI_END_COMMAND_LIST:
            case MCI_CONSTANT:
            case MCI_FLAG:                break;
            case MCI_INTEGER:       if (!inCst) offset++;   break;
            case MCI_END_CONSTANT:
            case MCI_STRING:        offset++; break;
            case MCI_RECT:                offset += 4; break;
            default:                ERR("oops\n");
            }
          }
      } while (eid != MCI_END_COMMAND);
      if (!found) {
          WARN("Optarg %s not found\n", debugstr_w(args));
          return MCIERR_UNRECOGNIZED_COMMAND;
      }
      if (offset == MCI_DATA_SIZE) {
          ERR("Internal data[] buffer overflow\n");
          return MCIERR_PARSER_INTERNAL;
      }
    }
    return 0;
}

/**************************************************************************
 *                      MCI_HandleReturnValues  [internal]
 */
static      DWORD MCI_HandleReturnValues(DWORD dwRet, LPWINE_MCIDRIVER wmd, DWORD retType, 
                                       LPDWORD data, LPWSTR lpstrRet, UINT uRetLen)
{
    static const WCHAR wszLd  [] = {'%','l','d',0};
    static const WCHAR wszLd4 [] = {'%','l','d',' ','%','l','d',' ','%','l','d',' ','%','l','d',0};
    static const WCHAR wszCol3[] = {'%','d',':','%','d',':','%','d',0};
    static const WCHAR wszCol4[] = {'%','d',':','%','d',':','%','d',':','%','d',0};

    if (lpstrRet) {
      switch (retType) {
      case 0: /* nothing to return */
          break;
      case MCI_INTEGER:
          switch (dwRet & 0xFFFF0000ul) {
          case 0:
          case MCI_INTEGER_RETURNED:
            snprintfW(lpstrRet, uRetLen, wszLd, data[1]);
            break;
          case MCI_RESOURCE_RETURNED:
            /* return string which ID is HIWORD(data[1]),
             * string is loaded from mmsystem.dll */
            LoadStringW(WINMM_IData->hWinMM32Instance, HIWORD(data[1]),
                      lpstrRet, uRetLen);
            break;
          case MCI_RESOURCE_RETURNED|MCI_RESOURCE_DRIVER:
            /* return string which ID is HIWORD(data[1]),
             * string is loaded from driver */
            /* FIXME: this is wrong for a 16 bit handle */
            LoadStringW(GetDriverModuleHandle(wmd->hDriver),
                      HIWORD(data[1]), lpstrRet, uRetLen);
            break;
          case MCI_COLONIZED3_RETURN:
            snprintfW(lpstrRet, uRetLen, wszCol3,
                    LOBYTE(LOWORD(data[1])), HIBYTE(LOWORD(data[1])),
                    LOBYTE(HIWORD(data[1])));
            break;
          case MCI_COLONIZED4_RETURN:
            snprintfW(lpstrRet, uRetLen, wszCol4,
                    LOBYTE(LOWORD(data[1])), HIBYTE(LOWORD(data[1])),
                    LOBYTE(HIWORD(data[1])), HIBYTE(HIWORD(data[1])));
            break;
          default:      ERR("Ooops (%04X)\n", HIWORD(dwRet));
          }
          break;
      case MCI_STRING:
          switch (dwRet & 0xFFFF0000ul) {
          case 0:
            /* nothing to do data[1] == lpstrRet */
            break;
          case MCI_INTEGER_RETURNED:
            data[1] = *(LPDWORD)lpstrRet;
            snprintfW(lpstrRet, uRetLen, wszLd, data[1]);
            break;
          default:
            WARN("Oooch. MCI_STRING and HIWORD(dwRet)=%04x\n", HIWORD(dwRet));
            break;
          }
          break;
      case MCI_RECT:
          if (dwRet & 0xFFFF0000ul)
            WARN("Oooch. MCI_STRING and HIWORD(dwRet)=%04x\n", HIWORD(dwRet));
          snprintfW(lpstrRet, uRetLen, wszLd4,
                      data[1], data[2], data[3], data[4]);
          break;
      default:          ERR("oops\n");
      }
    }
    return LOWORD(dwRet);
}

/**************************************************************************
 *                      mciSendStringW          [WINMM.@]
 */
DWORD WINAPI mciSendStringW(LPCWSTR lpstrCommand, LPWSTR lpstrRet,
                      UINT uRetLen, HWND hwndCallback)
{
    LPWSTR        verb, dev, args;
    LPWINE_MCIDRIVER    wmd = 0;
    DWORD         dwFlags = 0, dwRet = 0;
    int                 offset = 0;
    DWORD         data[MCI_DATA_SIZE];
    DWORD         retType;
    LPCWSTR       lpCmd = 0;
    LPWSTR        devAlias = NULL;
    BOOL          bAutoOpen = FALSE;
    static const WCHAR  wszNew[] = {'n','e','w',0};
    static const WCHAR  wszSAliasS[] = {' ','a','l','i','a','s',' ',0};

    TRACE("(%s, %p, %d, %p)\n", 
          debugstr_w(lpstrCommand), lpstrRet, uRetLen, hwndCallback);

    /* format is <command> <device> <optargs> */
    if (!(verb = HeapAlloc(GetProcessHeap(), 0, (strlenW(lpstrCommand)+1) * sizeof(WCHAR))))
      return MCIERR_OUT_OF_MEMORY;
    strcpyW( verb, lpstrCommand );
    CharLowerW(verb);

    memset(data, 0, sizeof(data));

    if (!(args = strchrW(verb, ' '))) {
      dwRet = MCIERR_MISSING_DEVICE_NAME;
      goto errCleanUp;
    }
    *args++ = '\0';
    if ((dwRet = MCI_GetString(&dev, &args))) {
      goto errCleanUp;
    }

    /* case dev == 'new' has to be handled */
    if (!strcmpW(dev, wszNew)) {
      FIXME("'new': NIY as device name\n");
      dwRet = MCIERR_MISSING_DEVICE_NAME;
      goto errCleanUp;
    }

    /* otherwise, try to grab devType from open */
    if (!strcmpW(verb, wszOpen)) {
      LPWSTR      devType, tmp;

      if ((devType = strchrW(dev, '!')) != NULL) {
          *devType++ = '\0';
          tmp = devType; devType = dev; dev = tmp;

          dwFlags |= MCI_OPEN_TYPE;
          data[2] = (DWORD)devType;
          devType = str_dup_upper(devType);
          dwFlags |= MCI_OPEN_ELEMENT;
          data[3] = (DWORD)dev;
      } else if (strchrW(dev, '.') == NULL) {
          tmp = strchrW(dev,' ');
          if (tmp) *tmp = '\0';
          data[2] = (DWORD)dev;
          devType = str_dup_upper(dev);
          if (tmp) *tmp = ' ';
          dwFlags |= MCI_OPEN_TYPE;
      } else {
            static const WCHAR wszTypeS[] = {'t','y','p','e',' ',0};
          if ((devType = strstrW(args, wszTypeS)) != NULL) {
            devType += 5;
            tmp = strchrW(devType, ' ');
            if (tmp) *tmp = '\0';
            devType = str_dup_upper(devType);
            if (tmp) *tmp = ' ';
            /* dwFlags and data[2] will be correctly set in ParseOpt loop */
          } else {
            WCHAR buf[32];
            if ((dwRet = MCI_GetDevTypeFromFileName(dev, buf, sizeof(buf))))
                goto errCleanUp;

            devType = str_dup_upper(buf);
          }
          dwFlags |= MCI_OPEN_ELEMENT;
          data[3] = (DWORD)dev;
      }
      if ((devAlias = strstrW(args, wszSAliasS))) {
            WCHAR*      tmp2;
          devAlias += 7;
          if (!(tmp = strchrW(devAlias,' '))) tmp = devAlias + strlenW(devAlias);
          if (tmp) *tmp = '\0';
            tmp2 = HeapAlloc(GetProcessHeap(), 0, (tmp - devAlias + 1) * sizeof(WCHAR) );
            memcpy( tmp2, devAlias, (tmp - devAlias) * sizeof(WCHAR) );
            tmp2[tmp - devAlias] = 0;
            data[4] = (DWORD)tmp2;
          /* should be done in regular options parsing */
          /* dwFlags |= MCI_OPEN_ALIAS; */
      }

      dwRet = MCI_LoadMciDriver(devType, &wmd);
      if (dwRet == MCIERR_DEVICE_NOT_INSTALLED)
          dwRet = MCIERR_INVALID_DEVICE_NAME;
      HeapFree(GetProcessHeap(), 0, devType);
      if (dwRet) {
          MCI_UnLoadMciDriver(wmd);
          goto errCleanUp;
      }
    } else if (!(wmd = MCI_GetDriver(mciGetDeviceIDW(dev)))) {
      /* auto open */
        static WCHAR wszOpenWait[] = {'o','p','e','n',' ','%','s',' ','w','a','i','t',0};
      WCHAR   buf[128];
      sprintfW(buf, wszOpenWait, dev);

      if ((dwRet = mciSendStringW(buf, NULL, 0, 0)) != 0)
          goto errCleanUp;

      wmd = MCI_GetDriver(mciGetDeviceIDW(dev));
      if (!wmd) {
          /* FIXME: memory leak, MCI driver is not closed */
          dwRet = MCIERR_INVALID_DEVICE_ID;
          goto errCleanUp;
      }
    }

    /* get the verb in the different command tables */
    if (wmd) {
      /* try the device specific command table */
      lpCmd = MCI_FindCommand(wmd->uSpecificCmdTable, verb);
      if (!lpCmd) {
          /* try the type specific command table */
          if (wmd->uTypeCmdTable == MCI_COMMAND_TABLE_NOT_LOADED)
            wmd->uTypeCmdTable = MCI_GetCommandTable(wmd->wType);
          if (wmd->uTypeCmdTable != MCI_NO_COMMAND_TABLE)
            lpCmd = MCI_FindCommand(wmd->uTypeCmdTable, verb);
      }
    }
    /* try core command table */
    if (!lpCmd) lpCmd = MCI_FindCommand(MCI_GetCommandTable(0), verb);

    if (!lpCmd) {
      TRACE("Command %s not found!\n", debugstr_w(verb));
      dwRet = MCIERR_UNRECOGNIZED_COMMAND;
      goto errCleanUp;
    }

    /* set up call back */
    if (hwndCallback != 0) {
      dwFlags |= MCI_NOTIFY;
      data[0] = (DWORD)hwndCallback;
    }

    /* set return information */
    switch (retType = MCI_GetReturnType(lpCmd)) {
    case 0:       offset = 1; break;
    case MCI_INTEGER:   offset = 2; break;
    case MCI_STRING:    data[1] = (DWORD)lpstrRet; data[2] = uRetLen; offset = 3; break;
    case MCI_RECT:      offset = 5; break;
    default:      ERR("oops\n");
    }

    TRACE("verb=%s on dev=%s; offset=%d\n", 
          debugstr_w(verb), debugstr_w(dev), offset);

    if ((dwRet = MCI_ParseOptArgs(data, offset, lpCmd, args, &dwFlags)))
      goto errCleanUp;

    if (bAutoOpen && (dwFlags & MCI_NOTIFY)) {
      dwRet = MCIERR_NOTIFY_ON_AUTO_OPEN;
      goto errCleanUp;
    }
    /* FIXME: the command should get it's own notification window set up and
     * ask for device closing while processing the notification mechanism
     */
    if (lpstrRet && uRetLen) *lpstrRet = '\0';

    TRACE("[%d, %s, %08lx, %08lx/%s %08lx/%s %08lx/%s %08lx/%s %08lx/%s %08lx/%s]\n",
        wmd->wDeviceID, MCI_MessageToString(MCI_GetMessage(lpCmd)), dwFlags,
        data[0], debugstr_w((WCHAR *)data[0]), data[1], debugstr_w((WCHAR *)data[1]),
        data[2], debugstr_w((WCHAR *)data[2]), data[3], debugstr_w((WCHAR *)data[3]),
        data[4], debugstr_w((WCHAR *)data[4]), data[5], debugstr_w((WCHAR *)data[5]));

    if (strcmpW(verb, wszOpen) == 0) {
      if ((dwRet = MCI_FinishOpen(wmd, (LPMCI_OPEN_PARMSW)data, dwFlags)))
          MCI_UnLoadMciDriver(wmd);
      /* FIXME: notification is not properly shared across two opens */
    } else {
      dwRet = MCI_SendCommand(wmd->wDeviceID, MCI_GetMessage(lpCmd), dwFlags, (DWORD)data, TRUE);
    }
    TRACE("=> 1/ %lx (%s)\n", dwRet, debugstr_w(lpstrRet));
    dwRet = MCI_HandleReturnValues(dwRet, wmd, retType, data, lpstrRet, uRetLen);
    TRACE("=> 2/ %lx (%s)\n", dwRet, debugstr_w(lpstrRet));

errCleanUp:
    HeapFree(GetProcessHeap(), 0, verb);
    HeapFree(GetProcessHeap(), 0, devAlias);
    return dwRet;
}

/**************************************************************************
 *                      mciSendStringA                [WINMM.@]
 */
DWORD WINAPI mciSendStringA(LPCSTR lpstrCommand, LPSTR lpstrRet,
                      UINT uRetLen, HWND hwndCallback)
{
    LPWSTR  lpwstrCommand;
    LPWSTR      lpwstrRet = NULL;
    UINT    ret;
    INT len;

    /* FIXME: is there something to do with lpstrReturnString ? */
    len = MultiByteToWideChar( CP_ACP, 0, lpstrCommand, -1, NULL, 0 );
    lpwstrCommand = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
    MultiByteToWideChar( CP_ACP, 0, lpstrCommand, -1, lpwstrCommand, len );
    if (lpstrRet)
    {
        lpwstrRet = HeapAlloc(GetProcessHeap(), 0, uRetLen * sizeof(WCHAR));
        if (!lpwstrRet) return MCIERR_OUT_OF_MEMORY;
    }
    ret = mciSendStringW(lpwstrCommand, lpwstrRet, uRetLen, hwndCallback);
    if (lpwstrRet)
        WideCharToMultiByte( CP_ACP, 0, lpwstrRet, -1, lpstrRet, uRetLen, NULL, NULL );
    HeapFree(GetProcessHeap(), 0, lpwstrCommand);
    HeapFree(GetProcessHeap(), 0, lpwstrRet);
    return ret;
}

/**************************************************************************
 *                      mciExecute              [WINMM.@]
 *                      mciExecute              [MMSYSTEM.712]
 */
BOOL WINAPI mciExecute(LPCSTR lpstrCommand)
{
    char    strRet[256];
    DWORD   ret;

    TRACE("(%s)!\n", lpstrCommand);

    ret = mciSendStringA(lpstrCommand, strRet, sizeof(strRet), 0);
    if (ret != 0) {
      if (!mciGetErrorStringA(ret, strRet, sizeof(strRet))) {
          sprintf(strRet, "Unknown MCI error (%ld)", ret);
      }
      MessageBoxA(0, strRet, "Error in mciExecute()", MB_OK);
    }
    /* FIXME: what shall I return ? */
    return TRUE;
}

/**************************************************************************
 *                      mciLoadCommandResource              [WINMM.@]
 *
 * Strangely, this function only exists as an UNICODE one.
 */
UINT WINAPI mciLoadCommandResource(HINSTANCE hInst, LPCWSTR resNameW, UINT type)
{
    HRSRC           hRsrc = 0;
    HGLOBAL       hMem;
    UINT16        ret = MCI_NO_COMMAND_TABLE;

    TRACE("(%p, %s, %d)!\n", hInst, debugstr_w(resNameW), type);

    /* if a file named "resname.mci" exits, then load resource "resname" from it
     * otherwise directly from driver
     * We don't support it (who uses this feature ?), but we check anyway
     */
    if (!type) {
#if 0
        /* FIXME: we should put this back into order, but I never found a program
         * actually using this feature, so we may not need it
         */
      char        buf[128];
      OFSTRUCT          ofs;

      strcat(strcpy(buf, resname), ".mci");
      if (OpenFile(buf, &ofs, OF_EXIST) != HFILE_ERROR) {
          FIXME("NIY: command table to be loaded from '%s'\n", ofs.szPathName);
      }
#endif
    }
    if (!(hRsrc = FindResourceW(hInst, resNameW, (LPWSTR)RT_RCDATA))) {
      WARN("No command table found in resource\n");
    } else if ((hMem = LoadResource(hInst, hRsrc))) {
      ret = MCI_SetCommandTable(LockResource(hMem), type);
    } else {
      WARN("Couldn't load resource.\n");
    }
    TRACE("=> %04x\n", ret);
    return ret;
}

/**************************************************************************
 *                      mciFreeCommandResource              [WINMM.@]
 */
BOOL WINAPI mciFreeCommandResource(UINT uTable)
{
    TRACE("(%08x)!\n", uTable);

    return MCI_DeleteCommandTable(uTable, FALSE);
}

/**************************************************************************
 *                MCI_SendCommandFrom32               [internal]
 */
DWORD MCI_SendCommandFrom32(MCIDEVICEID wDevID, UINT16 wMsg, DWORD_PTR dwParam1, DWORD_PTR dwParam2)
{
    DWORD         dwRet = MCIERR_INVALID_DEVICE_ID;
    LPWINE_MCIDRIVER    wmd = MCI_GetDriver(wDevID);

    if (wmd) {
      if (wmd->bIs32) {
          dwRet = SendDriverMessage(wmd->hDriver, wMsg, dwParam1, dwParam2);
      } else if (pFnMciMapMsg32WTo16) {
          WINMM_MapType res;

          switch (res = pFnMciMapMsg32WTo16(wmd->wType, wMsg, dwParam1, &dwParam2)) {
          case WINMM_MAP_MSGERROR:
            TRACE("Not handled yet (%s)\n", MCI_MessageToString(wMsg));
            dwRet = MCIERR_DRIVER_INTERNAL;
            break;
          case WINMM_MAP_NOMEM:
            TRACE("Problem mapping msg=%s from 32a to 16\n", MCI_MessageToString(wMsg));
            dwRet = MCIERR_OUT_OF_MEMORY;
            break;
          case WINMM_MAP_OK:
          case WINMM_MAP_OKMEM:
            dwRet = SendDriverMessage(wmd->hDriver, wMsg, dwParam1, dwParam2);
            if (res == WINMM_MAP_OKMEM)
                pFnMciUnMapMsg32WTo16(wmd->wType, wMsg, dwParam1, dwParam2);
            break;
          }
      }
    }
    return dwRet;
}

/**************************************************************************
 *                MCI_SendCommandFrom16               [internal]
 */
DWORD MCI_SendCommandFrom16(MCIDEVICEID wDevID, UINT16 wMsg, DWORD_PTR dwParam1, DWORD_PTR dwParam2)
{
    DWORD         dwRet = MCIERR_INVALID_DEVICE_ID;
    LPWINE_MCIDRIVER    wmd = MCI_GetDriver(wDevID);

    if (wmd) {
      dwRet = MCIERR_INVALID_DEVICE_ID;

      if (wmd->bIs32 && pFnMciMapMsg16To32W) {
          WINMM_MapType       res;

          switch (res = pFnMciMapMsg16To32W(wmd->wType, wMsg, &dwParam2)) {
          case WINMM_MAP_MSGERROR:
            TRACE("Not handled yet (%s)\n", MCI_MessageToString(wMsg));
            dwRet = MCIERR_DRIVER_INTERNAL;
            break;
          case WINMM_MAP_NOMEM:
            TRACE("Problem mapping msg=%s from 16 to 32a\n", MCI_MessageToString(wMsg));
            dwRet = MCIERR_OUT_OF_MEMORY;
            break;
          case WINMM_MAP_OK:
          case WINMM_MAP_OKMEM:
            dwRet = SendDriverMessage(wmd->hDriver, wMsg, dwParam1, dwParam2);
            if (res == WINMM_MAP_OKMEM)
                pFnMciUnMapMsg16To32W(wmd->wType, wMsg, dwParam2);
            break;
          }
      } else {
          dwRet = SendDriverMessage(wmd->hDriver, wMsg, dwParam1, dwParam2);
      }
    }
    return dwRet;
}

/**************************************************************************
 *                MCI_Open                      [internal]
 */
static      DWORD MCI_Open(DWORD dwParam, LPMCI_OPEN_PARMSW lpParms)
{
    WCHAR               strDevTyp[128];
    DWORD               dwRet;
    LPWINE_MCIDRIVER          wmd = NULL;

    TRACE("(%08lX, %p)\n", dwParam, lpParms);
    if (lpParms == NULL) return MCIERR_NULL_PARAMETER_BLOCK;

    /* only two low bytes are generic, the other ones are dev type specific */
#define WINE_MCIDRIVER_SUPP   (0xFFFF0000|MCI_OPEN_SHAREABLE|MCI_OPEN_ELEMENT| \
                         MCI_OPEN_ALIAS|MCI_OPEN_TYPE|MCI_OPEN_TYPE_ID| \
                         MCI_NOTIFY|MCI_WAIT)
    if ((dwParam & ~WINE_MCIDRIVER_SUPP) != 0) {
      FIXME("Unsupported yet dwFlags=%08lX\n", dwParam & ~WINE_MCIDRIVER_SUPP);
    }
#undef WINE_MCIDRIVER_SUPP

    strDevTyp[0] = 0;

    if (dwParam & MCI_OPEN_TYPE) {
      if (dwParam & MCI_OPEN_TYPE_ID) {
          WORD uDevType = LOWORD((DWORD)lpParms->lpstrDeviceType);

          if (uDevType < MCI_DEVTYPE_FIRST ||
            uDevType > MCI_DEVTYPE_LAST ||
            !LoadStringW(WINMM_IData->hWinMM32Instance, uDevType, 
                             strDevTyp, sizeof(strDevTyp) / sizeof(WCHAR))) {
            dwRet = MCIERR_BAD_INTEGER;
            goto errCleanUp;
          }
      } else {
          LPWSTR  ptr;
          if (lpParms->lpstrDeviceType == NULL) {
            dwRet = MCIERR_NULL_PARAMETER_BLOCK;
            goto errCleanUp;
          }
          strcpyW(strDevTyp, lpParms->lpstrDeviceType);
          ptr = strchrW(strDevTyp, '!');
          if (ptr) {
            /* this behavior is not documented in windows. However, since, in
             * some occasions, MCI_OPEN handling is translated by WinMM into
             * a call to mciSendString("open <type>"); this code shall be correct
             */
            if (dwParam & MCI_OPEN_ELEMENT) {
                ERR("Both MCI_OPEN_ELEMENT(%s) and %s are used\n",
                  debugstr_w(lpParms->lpstrElementName), 
                        debugstr_w(strDevTyp));
                dwRet = MCIERR_UNRECOGNIZED_KEYWORD;
                goto errCleanUp;
            }
            dwParam |= MCI_OPEN_ELEMENT;
            *ptr++ = 0;
            /* FIXME: not a good idea to write in user supplied buffer */
            lpParms->lpstrElementName = ptr;
          }

      }
      TRACE("devType=%s !\n", debugstr_w(strDevTyp));
    }

    if (dwParam & MCI_OPEN_ELEMENT) {
      TRACE("lpstrElementName=%s\n", debugstr_w(lpParms->lpstrElementName));

      if (dwParam & MCI_OPEN_ELEMENT_ID) {
          FIXME("Unsupported yet flag MCI_OPEN_ELEMENT_ID\n");
          dwRet = MCIERR_UNRECOGNIZED_KEYWORD;
          goto errCleanUp;
      }

      if (!lpParms->lpstrElementName) {
          dwRet = MCIERR_NULL_PARAMETER_BLOCK;
          goto errCleanUp;
      }

      /* type, if given as a parameter, supersedes file extension */
      if (!strDevTyp[0] &&
          MCI_GetDevTypeFromFileName(lpParms->lpstrElementName,
                               strDevTyp, sizeof(strDevTyp))) {
            static const WCHAR wszCdAudio[] = {'C','D','A','U','D','I','O',0};
          if (GetDriveTypeW(lpParms->lpstrElementName) != DRIVE_CDROM) {
            dwRet = MCIERR_EXTENSION_NOT_FOUND;
            goto errCleanUp;
          }
          /* FIXME: this will not work if several CDROM drives are installed on the machine */
          strcpyW(strDevTyp, wszCdAudio);
      }
    }

    if (strDevTyp[0] == 0) {
      FIXME("Couldn't load driver\n");
      dwRet = MCIERR_INVALID_DEVICE_NAME;
      goto errCleanUp;
    }

    if (dwParam & MCI_OPEN_ALIAS) {
      TRACE("Alias=%s !\n", debugstr_w(lpParms->lpstrAlias));
      if (!lpParms->lpstrAlias) {
          dwRet = MCIERR_NULL_PARAMETER_BLOCK;
          goto errCleanUp;
      }
    }

    if ((dwRet = MCI_LoadMciDriver(strDevTyp, &wmd))) {
      goto errCleanUp;
    }

    if ((dwRet = MCI_FinishOpen(wmd, lpParms, dwParam))) {
      TRACE("Failed to open driver (MCI_OPEN_DRIVER) [%08lx], closing\n", dwRet);
      /* FIXME: is dwRet the correct ret code ? */
      goto errCleanUp;
    }

    /* only handled devices fall through */
    TRACE("wDevID=%04X wDeviceID=%d dwRet=%ld\n", wmd->wDeviceID, lpParms->wDeviceID, dwRet);

    if (dwParam & MCI_NOTIFY)
      mciDriverNotify((HWND)lpParms->dwCallback, wmd->wDeviceID, MCI_NOTIFY_SUCCESSFUL);

    return 0;
errCleanUp:
    if (wmd) MCI_UnLoadMciDriver(wmd);

    if (dwParam & MCI_NOTIFY)
      mciDriverNotify((HWND)lpParms->dwCallback, 0, MCI_NOTIFY_FAILURE);
    return dwRet;
}

/**************************************************************************
 *                MCI_Close                     [internal]
 */
static      DWORD MCI_Close(UINT16 wDevID, DWORD dwParam, LPMCI_GENERIC_PARMS lpParms)
{
    DWORD         dwRet;
    LPWINE_MCIDRIVER    wmd;

    TRACE("(%04x, %08lX, %p)\n", wDevID, dwParam, lpParms);

    if (wDevID == MCI_ALL_DEVICE_ID) {
      LPWINE_MCIDRIVER  next;

      EnterCriticalSection(&WINMM_IData->cs);
      /* FIXME: shall I notify once after all is done, or for
       * each of the open drivers ? if the latest, which notif
       * to return when only one fails ?
       */
      for (wmd = WINMM_IData->lpMciDrvs; wmd; ) {
          next = wmd->lpNext;
          MCI_Close(wmd->wDeviceID, dwParam, lpParms);
          wmd = next;
      }
      LeaveCriticalSection(&WINMM_IData->cs);
      return 0;
    }

    if (!(wmd = MCI_GetDriver(wDevID))) {
      return MCIERR_INVALID_DEVICE_ID;
    }

    dwRet = MCI_SendCommandFrom32(wDevID, MCI_CLOSE_DRIVER, dwParam, (DWORD)lpParms);

    MCI_UnLoadMciDriver(wmd);

    if (dwParam & MCI_NOTIFY)
      mciDriverNotify((HWND)lpParms->dwCallback, wDevID,
                        (dwRet == 0) ? MCI_NOTIFY_SUCCESSFUL : MCI_NOTIFY_FAILURE);

    return dwRet;
}

/**************************************************************************
 *                MCI_WriteString                     [internal]
 */
DWORD MCI_WriteString(LPWSTR lpDstStr, DWORD dstSize, LPCWSTR lpSrcStr)
{
    DWORD   ret = 0;

    if (lpSrcStr) {
        dstSize /= sizeof(WCHAR);
      if (dstSize <= strlenW(lpSrcStr)) {
          lstrcpynW(lpDstStr, lpSrcStr, dstSize - 1);
          ret = MCIERR_PARAM_OVERFLOW;
      } else {
          strcpyW(lpDstStr, lpSrcStr);
      }
    } else {
      *lpDstStr = 0;
    }
    return ret;
}

/**************************************************************************
 *                MCI_Sysinfo                   [internal]
 */
static      DWORD MCI_SysInfo(UINT uDevID, DWORD dwFlags, LPMCI_SYSINFO_PARMSW lpParms)
{
    DWORD         ret = MCIERR_INVALID_DEVICE_ID, cnt = 0;
    WCHAR         buf[2048], *s = buf, *p;
    LPWINE_MCIDRIVER    wmd;
    HKEY          hKey;

    if (lpParms == NULL)                  return MCIERR_NULL_PARAMETER_BLOCK;

    TRACE("(%08x, %08lX, %08lX[num=%ld, wDevTyp=%u])\n",
        uDevID, dwFlags, (DWORD)lpParms, lpParms->dwNumber, lpParms->wDeviceType);

    switch (dwFlags & ~MCI_SYSINFO_OPEN) {
    case MCI_SYSINFO_QUANTITY:
      if (lpParms->wDeviceType < MCI_DEVTYPE_FIRST || lpParms->wDeviceType > MCI_DEVTYPE_LAST) {
          if (dwFlags & MCI_SYSINFO_OPEN) {
            TRACE("MCI_SYSINFO_QUANTITY: # of open MCI drivers\n");
            EnterCriticalSection(&WINMM_IData->cs);
            for (wmd = WINMM_IData->lpMciDrvs; wmd; wmd = wmd->lpNext) {
                cnt++;
            }
            LeaveCriticalSection(&WINMM_IData->cs);
          } else {
            TRACE("MCI_SYSINFO_QUANTITY: # of installed MCI drivers\n");
            if (RegOpenKeyExW( HKEY_LOCAL_MACHINE, wszHklmMci,
                           0, KEY_QUERY_VALUE, &hKey ) == ERROR_SUCCESS) {
                RegQueryInfoKeyW( hKey, 0, 0, 0, &cnt, 0, 0, 0, 0, 0, 0, 0);
                RegCloseKey( hKey );
            }
            if (GetPrivateProfileStringW(wszMci, 0, wszNull, buf, sizeof(buf), wszSystemIni))
                for (s = buf; *s; s += strlenW(s) + 1) cnt++;
          }
      } else {
          if (dwFlags & MCI_SYSINFO_OPEN) {
            TRACE("MCI_SYSINFO_QUANTITY: # of open MCI drivers of type %u\n", lpParms->wDeviceType);
            EnterCriticalSection(&WINMM_IData->cs);
            for (wmd = WINMM_IData->lpMciDrvs; wmd; wmd = wmd->lpNext) {
                if (wmd->wType == lpParms->wDeviceType) cnt++;
            }
            LeaveCriticalSection(&WINMM_IData->cs);
          } else {
            TRACE("MCI_SYSINFO_QUANTITY: # of installed MCI drivers of type %u\n", lpParms->wDeviceType);
            FIXME("Don't know how to get # of MCI devices of a given type\n");
            cnt = 1;
          }
      }
      *(DWORD*)lpParms->lpstrReturn = cnt;
      TRACE("(%ld) => '%ld'\n", lpParms->dwNumber, *(DWORD*)lpParms->lpstrReturn);
      ret = MCI_INTEGER_RETURNED;
      break;
    case MCI_SYSINFO_INSTALLNAME:
      TRACE("MCI_SYSINFO_INSTALLNAME \n");
      if ((wmd = MCI_GetDriver(uDevID))) {
          ret = MCI_WriteString(lpParms->lpstrReturn, lpParms->dwRetSize,
                          wmd->lpstrDeviceType);
      } else {
          *lpParms->lpstrReturn = 0;
          ret = MCIERR_INVALID_DEVICE_ID;
      }
      TRACE("(%ld) => %s\n", lpParms->dwNumber, debugstr_w(lpParms->lpstrReturn));
      break;
    case MCI_SYSINFO_NAME:
      TRACE("MCI_SYSINFO_NAME\n");
      if (dwFlags & MCI_SYSINFO_OPEN) {
          FIXME("Don't handle MCI_SYSINFO_NAME|MCI_SYSINFO_OPEN (yet)\n");
          ret = MCIERR_UNRECOGNIZED_COMMAND;
      } else {
          s = NULL;
          if (RegOpenKeyExW( HKEY_LOCAL_MACHINE, wszHklmMci, 0, 
                               KEY_QUERY_VALUE, &hKey ) == ERROR_SUCCESS) {
            if (RegQueryInfoKeyW( hKey, 0, 0, 0, &cnt, 
                                      0, 0, 0, 0, 0, 0, 0) == ERROR_SUCCESS && 
                    lpParms->dwNumber <= cnt) {
                DWORD bufLen = sizeof(buf);
                if (RegEnumKeyExW(hKey, lpParms->dwNumber - 1, 
                                      buf, &bufLen, 0, 0, 0, 0) == ERROR_SUCCESS)
                        s = buf;
            }
              RegCloseKey( hKey );
          }
          if (!s) {
            if (GetPrivateProfileStringW(wszMci, 0, wszNull, buf, sizeof(buf), wszSystemIni)) {
                for (p = buf; *p; p += strlenW(p) + 1, cnt++) {
                        TRACE("%ld: %s\n", cnt, debugstr_w(p));
                  if (cnt == lpParms->dwNumber - 1) {
                      s = p;
                      break;
                  }
                }
            }
          }
          ret = s ? MCI_WriteString(lpParms->lpstrReturn, lpParms->dwRetSize / sizeof(WCHAR), s) : MCIERR_OUTOFRANGE;
      }
      TRACE("(%ld) => %s\n", lpParms->dwNumber, debugstr_w(lpParms->lpstrReturn));
      break;
    default:
      TRACE("Unsupported flag value=%08lx\n", dwFlags);
      ret = MCIERR_UNRECOGNIZED_COMMAND;
    }
    return ret;
}

/**************************************************************************
 *                MCI_Break                     [internal]
 */
static      DWORD MCI_Break(UINT wDevID, DWORD dwFlags, LPMCI_BREAK_PARMS lpParms)
{
    DWORD   dwRet = 0;

    if (lpParms == NULL)      return MCIERR_NULL_PARAMETER_BLOCK;

    if (dwFlags & MCI_NOTIFY)
      mciDriverNotify((HWND)lpParms->dwCallback, wDevID,
                        (dwRet == 0) ? MCI_NOTIFY_SUCCESSFUL : MCI_NOTIFY_FAILURE);

    return dwRet;
}

/**************************************************************************
 *                MCI_Sound                     [internal]
 */
static      DWORD MCI_Sound(UINT wDevID, DWORD dwFlags, LPMCI_SOUND_PARMSW lpParms)
{
    DWORD   dwRet = 0;

    if (lpParms == NULL)      return MCIERR_NULL_PARAMETER_BLOCK;

    if (dwFlags & MCI_SOUND_NAME)
        dwRet = sndPlaySoundW(lpParms->lpstrSoundName, SND_SYNC) ? MMSYSERR_NOERROR : MMSYSERR_ERROR;
    else
        dwRet = MMSYSERR_ERROR; /* what should be done ??? */
    if (dwFlags & MCI_NOTIFY)
      mciDriverNotify((HWND)lpParms->dwCallback, wDevID,
                        (dwRet == 0) ? MCI_NOTIFY_SUCCESSFUL : MCI_NOTIFY_FAILURE);

    return dwRet;
}

/**************************************************************************
 *                MCI_SendCommand                     [internal]
 */
DWORD MCI_SendCommand(UINT wDevID, UINT16 wMsg, DWORD dwParam1,
                  DWORD dwParam2, BOOL bFrom32)
{
    DWORD         dwRet = MCIERR_UNRECOGNIZED_COMMAND;

    switch (wMsg) {
    case MCI_OPEN:
      if (bFrom32) {
          dwRet = MCI_Open(dwParam1, (LPMCI_OPEN_PARMSW)dwParam2);
      } else if (pFnMciMapMsg16To32W) {
          switch (pFnMciMapMsg16To32W(0, wMsg, &dwParam2)) {
          case WINMM_MAP_OK:
          case WINMM_MAP_OKMEM:
            dwRet = MCI_Open(dwParam1, (LPMCI_OPEN_PARMSW)dwParam2);
            pFnMciUnMapMsg16To32W(0, wMsg, dwParam2);
            break;
          default: break; /* so that gcc does not bark */
          }
      }
      break;
    case MCI_CLOSE:
      if (bFrom32) {
          dwRet = MCI_Close(wDevID, dwParam1, (LPMCI_GENERIC_PARMS)dwParam2);
      } else if (pFnMciMapMsg16To32W) {
          switch (pFnMciMapMsg16To32W(0, wMsg, &dwParam2)) {
          case WINMM_MAP_OK:
          case WINMM_MAP_OKMEM:
            dwRet = MCI_Close(wDevID, dwParam1, (LPMCI_GENERIC_PARMS)dwParam2);
            pFnMciUnMapMsg16To32W(0, wMsg, dwParam2);
            break;
          default: break; /* so that gcc does not bark */
          }
      }
      break;
    case MCI_SYSINFO:
      if (bFrom32) {
          dwRet = MCI_SysInfo(wDevID, dwParam1, (LPMCI_SYSINFO_PARMSW)dwParam2);
      } else if (pFnMciMapMsg16To32W) {
          switch (pFnMciMapMsg16To32W(0, wMsg, &dwParam2)) {
          case WINMM_MAP_OK:
          case WINMM_MAP_OKMEM:
            dwRet = MCI_SysInfo(wDevID, dwParam1, (LPMCI_SYSINFO_PARMSW)dwParam2);
            pFnMciUnMapMsg16To32W(0, wMsg, dwParam2);
            break;
          default: break; /* so that gcc does not bark */
          }
      }
      break;
    case MCI_BREAK:
      if (bFrom32) {
          dwRet = MCI_Break(wDevID, dwParam1, (LPMCI_BREAK_PARMS)dwParam2);
      } else if (pFnMciMapMsg16To32W) {
          switch (pFnMciMapMsg16To32W(0, wMsg, &dwParam2)) {
          case WINMM_MAP_OK:
          case WINMM_MAP_OKMEM:
            dwRet = MCI_Break(wDevID, dwParam1, (LPMCI_BREAK_PARMS)dwParam2);
            pFnMciUnMapMsg16To32W(0, wMsg, dwParam2);
            break;
          default: break; /* so that gcc does not bark */
          }
      }
      break;
    case MCI_SOUND:
      if (bFrom32) {
          dwRet = MCI_Sound(wDevID, dwParam1, (LPMCI_SOUND_PARMSW)dwParam2);
      } else if (pFnMciMapMsg16To32W) {
          switch (pFnMciMapMsg16To32W(0, wMsg, &dwParam2)) {
          case WINMM_MAP_OK:
          case WINMM_MAP_OKMEM:
            dwRet = MCI_Sound(wDevID, dwParam1, (LPMCI_SOUND_PARMSW)dwParam2);
            pFnMciUnMapMsg16To32W(0, wMsg, dwParam2);
            break;
          default: break; /* so that gcc does not bark */
          }
      }
      break;
    default:
      if (wDevID == MCI_ALL_DEVICE_ID) {
          FIXME("unhandled MCI_ALL_DEVICE_ID\n");
          dwRet = MCIERR_CANNOT_USE_ALL;
      } else {
          dwRet = (bFrom32) ?
            MCI_SendCommandFrom32(wDevID, wMsg, dwParam1, dwParam2) :
            MCI_SendCommandFrom16(wDevID, wMsg, dwParam1, dwParam2);
      }
      break;
    }
    return dwRet;
}

/**************************************************************************
 *                      MCI_CleanUp             [internal]
 *
 * Some MCI commands need to be cleaned-up (when not called from
 * mciSendString), because MCI drivers return extra information for string
 * transformation. This function gets rid of them.
 */
LRESULT           MCI_CleanUp(LRESULT dwRet, UINT wMsg, DWORD dwParam2)
{
    if (LOWORD(dwRet))
      return LOWORD(dwRet);

    switch (wMsg) {
    case MCI_GETDEVCAPS:
      switch (dwRet & 0xFFFF0000ul) {
      case 0:
      case MCI_COLONIZED3_RETURN:
      case MCI_COLONIZED4_RETURN:
      case MCI_INTEGER_RETURNED:
          /* nothing to do */
          break;
      case MCI_RESOURCE_RETURNED:
      case MCI_RESOURCE_RETURNED|MCI_RESOURCE_DRIVER:
          {
            LPMCI_GETDEVCAPS_PARMS  lmgp;

            lmgp = (LPMCI_GETDEVCAPS_PARMS)(void*)dwParam2;
            TRACE("Changing %08lx to %08lx\n", lmgp->dwReturn, (DWORD)LOWORD(lmgp->dwReturn));
            lmgp->dwReturn = LOWORD(lmgp->dwReturn);
          }
          break;
      default:
          FIXME("Unsupported value for hiword (%04x) returned by DriverProc(%s)\n",
              HIWORD(dwRet), MCI_MessageToString(wMsg));
      }
      break;
    case MCI_STATUS:
      switch (dwRet & 0xFFFF0000ul) {
      case 0:
      case MCI_COLONIZED3_RETURN:
      case MCI_COLONIZED4_RETURN:
      case MCI_INTEGER_RETURNED:
          /* nothing to do */
          break;
      case MCI_RESOURCE_RETURNED:
      case MCI_RESOURCE_RETURNED|MCI_RESOURCE_DRIVER:
          {
            LPMCI_STATUS_PARMS      lsp;

            lsp = (LPMCI_STATUS_PARMS)(void*)dwParam2;
            TRACE("Changing %08lx to %08lx\n", lsp->dwReturn, (DWORD)LOWORD(lsp->dwReturn));
            lsp->dwReturn = LOWORD(lsp->dwReturn);
          }
          break;
      default:
          FIXME("Unsupported value for hiword (%04x) returned by DriverProc(%s)\n",
              HIWORD(dwRet), MCI_MessageToString(wMsg));
      }
      break;
    case MCI_SYSINFO:
      switch (dwRet & 0xFFFF0000ul) {
      case 0:
      case MCI_INTEGER_RETURNED:
          /* nothing to do */
          break;
      default:
          FIXME("Unsupported value for hiword (%04x)\n", HIWORD(dwRet));
      }
      break;
    default:
      if (HIWORD(dwRet)) {
          FIXME("Got non null hiword for dwRet=0x%08lx for command %s\n",
              dwRet, MCI_MessageToString(wMsg));
      }
      break;
    }
    return LOWORD(dwRet);
}

/**************************************************************************
 *                      mciGetErrorStringW            [WINMM.@]
 */
BOOL WINAPI mciGetErrorStringW(MCIERROR wError, LPWSTR lpstrBuffer, UINT uLength)
{
    BOOL          ret = FALSE;

    if (lpstrBuffer != NULL && uLength > 0 &&
      wError >= MCIERR_BASE && wError <= MCIERR_CUSTOM_DRIVER_BASE) {

      if (LoadStringW(WINMM_IData->hWinMM32Instance,
                  wError, lpstrBuffer, uLength) > 0) {
          ret = TRUE;
      }
    }
    return ret;
}

/**************************************************************************
 *                      mciGetErrorStringA            [WINMM.@]
 */
BOOL WINAPI mciGetErrorStringA(MCIERROR dwError, LPSTR lpstrBuffer, UINT uLength)
{
    BOOL          ret = FALSE;

    if (lpstrBuffer != NULL && uLength > 0 &&
      dwError >= MCIERR_BASE && dwError <= MCIERR_CUSTOM_DRIVER_BASE) {

      if (LoadStringA(WINMM_IData->hWinMM32Instance,
                  dwError, lpstrBuffer, uLength) > 0) {
          ret = TRUE;
      }
    }
    return ret;
}

/**************************************************************************
 *                mciDriverNotify                     [WINMM.@]
 */
BOOL WINAPI mciDriverNotify(HWND hWndCallBack, MCIDEVICEID wDevID, UINT wStatus)
{
    TRACE("(%p, %04x, %04X)\n", hWndCallBack, wDevID, wStatus);

    return PostMessageW(hWndCallBack, MM_MCINOTIFY, wStatus, wDevID);
}

/**************************************************************************
 *                mciGetDriverData              [WINMM.@]
 */
DWORD WINAPI mciGetDriverData(MCIDEVICEID uDeviceID)
{
    LPWINE_MCIDRIVER    wmd;

    TRACE("(%04x)\n", uDeviceID);

    wmd = MCI_GetDriver(uDeviceID);

    if (!wmd) {
      WARN("Bad uDeviceID\n");
      return 0L;
    }

    return wmd->dwPrivate;
}

/**************************************************************************
 *                mciSetDriverData              [WINMM.@]
 */
BOOL WINAPI mciSetDriverData(MCIDEVICEID uDeviceID, DWORD data)
{
    LPWINE_MCIDRIVER    wmd;

    TRACE("(%04x, %08lx)\n", uDeviceID, data);

    wmd = MCI_GetDriver(uDeviceID);

    if (!wmd) {
      WARN("Bad uDeviceID\n");
      return FALSE;
    }

    wmd->dwPrivate = data;
    return TRUE;
}

/**************************************************************************
 *                      mciSendCommandW               [WINMM.@]
 *
 */
DWORD WINAPI mciSendCommandW(MCIDEVICEID wDevID, UINT wMsg, DWORD_PTR dwParam1, DWORD_PTR dwParam2)
{
    DWORD   dwRet;

    TRACE("(%08x, %s, %08lx, %08lx)\n",
        wDevID, MCI_MessageToString(wMsg), dwParam1, dwParam2);

    dwRet = MCI_SendCommand(wDevID, wMsg, dwParam1, dwParam2, TRUE);
    dwRet = MCI_CleanUp(dwRet, wMsg, dwParam2);
    TRACE("=> %08lx\n", dwRet);
    return dwRet;
}

/**************************************************************************
 *                      mciSendCommandA               [WINMM.@]
 */
DWORD WINAPI mciSendCommandA(MCIDEVICEID wDevID, UINT wMsg, DWORD_PTR dwParam1, DWORD_PTR dwParam2)
{
    DWORD ret;
    int mapped;

    TRACE("(%08x, %s, %08lx, %08lx)\n",
        wDevID, MCI_MessageToString(wMsg), dwParam1, dwParam2);

    mapped = MCI_MapMsgAtoW(wMsg, dwParam1, &dwParam2);
    if (mapped == -1)
    {
        FIXME("message %04x mapping failed\n", wMsg);
        return MMSYSERR_NOMEM;
    }
    ret = mciSendCommandW(wDevID, wMsg, dwParam1, dwParam2);
    if (mapped)
        MCI_UnmapMsgAtoW(wMsg, dwParam1, dwParam2, ret);
    return ret;
}

/**************************************************************************
 *                      mciGetDeviceIDA               [WINMM.@]
 */
UINT WINAPI mciGetDeviceIDA(LPCSTR lpstrName)
{
    LPWSTR w = MCI_strdupAtoW(lpstrName);
    UINT ret = MCIERR_OUT_OF_MEMORY;

    if (w)
    {
        ret = mciGetDeviceIDW(w);
        HeapFree(GetProcessHeap(), 0, w);
    }
    return ret;
}

/**************************************************************************
 *                      mciGetDeviceIDW                     [WINMM.@]
 */
UINT WINAPI mciGetDeviceIDW(LPCWSTR lpwstrName)
{
    return MCI_GetDriverFromString(lpwstrName); 
}

/******************************************************************
 *          MyUserYield
 *
 * Internal wrapper to call USER.UserYield16 (in fact through a Wine only export from USER32).
 */
static void MyUserYield(void)
{
    HMODULE mod = GetModuleHandleA( "user32.dll" );
    if (mod)
    {
        FARPROC proc = GetProcAddress( mod, "UserYield16" );
        if (proc) proc();
    }
}

/**************************************************************************
 *                      MCI_DefYieldProc              [internal]
 */
UINT WINAPI MCI_DefYieldProc(MCIDEVICEID wDevID, DWORD data)
{
    INT16   ret;

    TRACE("(0x%04x, 0x%08lx)\n", wDevID, data);

    if ((HIWORD(data) != 0 && HWND_16(GetActiveWindow()) != HIWORD(data)) ||
      (GetAsyncKeyState(LOWORD(data)) & 1) == 0) {
      MyUserYield();
      ret = 0;
    } else {
      MSG         msg;

      msg.hwnd = HWND_32(HIWORD(data));
      while (!PeekMessageW(&msg, msg.hwnd, WM_KEYFIRST, WM_KEYLAST, PM_REMOVE));
      ret = -1;
    }
    return ret;
}

/**************************************************************************
 *                      mciSetYieldProc               [WINMM.@]
 */
BOOL WINAPI mciSetYieldProc(MCIDEVICEID uDeviceID, YIELDPROC fpYieldProc, DWORD dwYieldData)
{
    LPWINE_MCIDRIVER    wmd;

    TRACE("(%u, %p, %08lx)\n", uDeviceID, fpYieldProc, dwYieldData);

    if (!(wmd = MCI_GetDriver(uDeviceID))) {
      WARN("Bad uDeviceID\n");
      return FALSE;
    }

    wmd->lpfnYieldProc = fpYieldProc;
    wmd->dwYieldData   = dwYieldData;
    wmd->bIs32         = TRUE;

    return TRUE;
}

/**************************************************************************
 *                      mciGetDeviceIDFromElementIDA  [WINMM.@]
 */
UINT WINAPI mciGetDeviceIDFromElementIDA(DWORD dwElementID, LPCSTR lpstrType)
{
    LPWSTR w = MCI_strdupAtoW(lpstrType);
    UINT ret = 0;

    if (w)
    {
        ret = mciGetDeviceIDFromElementIDW(dwElementID, w);
        HeapFree(GetProcessHeap(), 0, w);
    }
    return ret;
}

/**************************************************************************
 *                      mciGetDeviceIDFromElementIDW  [WINMM.@]
 */
UINT WINAPI mciGetDeviceIDFromElementIDW(DWORD dwElementID, LPCWSTR lpstrType)
{
    /* FIXME: that's rather strange, there is no
     * mciGetDeviceIDFromElementID32A in winmm.spec
     */
    FIXME("(%lu, %s) stub\n", dwElementID, debugstr_w(lpstrType));
    return 0;
}

/**************************************************************************
 *                      mciGetYieldProc               [WINMM.@]
 */
YIELDPROC WINAPI mciGetYieldProc(MCIDEVICEID uDeviceID, DWORD* lpdwYieldData)
{
    LPWINE_MCIDRIVER    wmd;

    TRACE("(%u, %p)\n", uDeviceID, lpdwYieldData);

    if (!(wmd = MCI_GetDriver(uDeviceID))) {
      WARN("Bad uDeviceID\n");
      return NULL;
    }
    if (!wmd->lpfnYieldProc) {
      WARN("No proc set\n");
      return NULL;
    }
    if (!wmd->bIs32) {
      WARN("Proc is 32 bit\n");
      return NULL;
    }
    return wmd->lpfnYieldProc;
}

/**************************************************************************
 *                      mciGetCreatorTask       [WINMM.@]
 */
HTASK WINAPI mciGetCreatorTask(MCIDEVICEID uDeviceID)
{
    LPWINE_MCIDRIVER    wmd;
    HTASK ret = 0;

    if ((wmd = MCI_GetDriver(uDeviceID))) ret = (HTASK)wmd->CreatorThread;

    TRACE("(%u) => %p\n", uDeviceID, ret);
    return ret;
}

/**************************************************************************
 *                mciDriverYield                      [WINMM.@]
 */
UINT WINAPI mciDriverYield(MCIDEVICEID uDeviceID)
{
    LPWINE_MCIDRIVER    wmd;
    UINT          ret = 0;

    TRACE("(%04x)\n", uDeviceID);

    if (!(wmd = MCI_GetDriver(uDeviceID)) || !wmd->lpfnYieldProc || !wmd->bIs32) {
      MyUserYield();
    } else {
      ret = wmd->lpfnYieldProc(uDeviceID, wmd->dwYieldData);
    }

    return ret;
}

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