mcimidi.c

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/*
 * Sample MIDI Wine Driver for Linux
 *
 * Copyright 1994 Martin Ayotte
 * 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
 */

/* TODO:
 *      + implement it correctly
 *      + finish asynchronous commands
 *      + better implement non waiting command (without the MCI_WAIT flag).
 */

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

#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "wownt32.h"
#include "mmddk.h"
#include "wine/debug.h"
#include "wine/unicode.h"

WINE_DEFAULT_DEBUG_CHANNEL(mcimidi);

#define MIDI_NOTEOFF             0x80
#define MIDI_NOTEON              0x90

typedef struct {
    DWORD       dwFirst;        /* offset in file of track */
    DWORD       dwLast;         /* number of bytes in file of track */
    DWORD       dwIndex;        /* current index in file (dwFirst <= dwIndex < dwLast) */
    DWORD       dwLength;       /* number of pulses in this track */
    DWORD       dwEventPulse;       /* current pulse # (event) pointed by dwIndex */
    DWORD       dwEventData;        /* current data    (event) pointed by dwIndex */
    WORD        wEventLength;       /* current length  (event) pointed by dwIndex */
    WORD        wStatus : 1,        /* 1 : playing, 0 : done */
                    wTrackNr : 7,
                    wLastCommand : 8;   /* last MIDI command on track */
} MCI_MIDITRACK;

typedef struct tagWINE_MCIMIDI {
    UINT        wDevID;         /* the MCI one */
    HMIDI       hMidi;
    int         nUseCount;              /* Incremented for each shared open          */
    HANDLE      hCallback;          /* Callback handle for pending notification  */
    HMMIO       hFile;                  /* mmio file handle open as Element          */
    LPWSTR      lpstrElementName;       /* Name of file (if any)                     */
    LPWSTR      lpstrCopyright;
    LPWSTR      lpstrName;
    WORD        wPort;          /* the WINMM device unit */
    WORD        dwStatus;       /* one from MCI_MODE_xxxx */
    DWORD       dwMciTimeFormat;    /* One of the supported MCI_FORMAT_xxxx */
    WORD        wFormat;        /* Format of MIDI hFile (0, 1 or 2) */
    WORD        nTracks;        /* Number of tracks in hFile */
    WORD        nDivision;      /* Number of division in hFile PPQN or SMPTE */
    WORD        wStartedPlaying;
    DWORD       dwTempo;        /* Tempo (# of 1/4 note per second */
    MCI_MIDITRACK*      tracks;         /* Content of each track */
    DWORD       dwPulse;
    DWORD       dwPositionMS;
    DWORD       dwStartTicks;
} WINE_MCIMIDI;

/* ===================================================================
 * ===================================================================
 * FIXME: should be using the new mmThreadXXXX functions from WINMM
 * instead of those
 * it would require to add a wine internal flag to mmThreadCreate
 * in order to pass a 32 bit function instead of a 16 bit
 * ===================================================================
 * =================================================================== */

struct SCA {
    UINT    wDevID;
    UINT    wMsg;
    DWORD_PTR   dwParam1;
    DWORD_PTR   dwParam2;
};

/* EPP DWORD WINAPI mciSendCommandA(UINT wDevID, UINT wMsg, DWORD dwParam1, DWORD dwParam2); */

/**************************************************************************
 *              MCI_SCAStarter          [internal]
 */
static DWORD CALLBACK   MCI_SCAStarter(LPVOID arg)
{
    struct SCA* sca = arg;
    DWORD       ret;

    TRACE("In thread before async command (%08x,%u,%08lx,%08lx)\n",
      sca->wDevID, sca->wMsg, sca->dwParam1, sca->dwParam2);
    ret = mciSendCommandA(sca->wDevID, sca->wMsg, sca->dwParam1 | MCI_WAIT, sca->dwParam2);
    TRACE("In thread after async command (%08x,%u,%08lx,%08lx)\n",
      sca->wDevID, sca->wMsg, sca->dwParam1, sca->dwParam2);
    HeapFree(GetProcessHeap(), 0, sca);
    return ret;
}

/**************************************************************************
 *              MCI_SendCommandAsync        [internal]
 */
static  DWORD MCI_SendCommandAsync(UINT wDevID, UINT wMsg, DWORD_PTR dwParam1,
                   DWORD_PTR dwParam2, UINT size)
{
    HANDLE handle;
    struct SCA* sca = HeapAlloc(GetProcessHeap(), 0, sizeof(struct SCA) + size);

    if (sca == 0)
    return MCIERR_OUT_OF_MEMORY;

    sca->wDevID   = wDevID;
    sca->wMsg     = wMsg;
    sca->dwParam1 = dwParam1;

    if (size && dwParam2) {
    sca->dwParam2 = (DWORD_PTR)sca + sizeof(struct SCA);
    /* copy structure passed by program in dwParam2 to be sure
     * we can still use it whatever the program does
     */
    memcpy((LPVOID)sca->dwParam2, (LPVOID)dwParam2, size);
    } else {
    sca->dwParam2 = dwParam2;
    }

    if ((handle = CreateThread(NULL, 0, MCI_SCAStarter, sca, 0, NULL)) == 0) {
    WARN("Couldn't allocate thread for async command handling, sending synchronously\n");
    return MCI_SCAStarter(sca);
    }
    SetThreadPriority(handle, THREAD_PRIORITY_TIME_CRITICAL);
    CloseHandle(handle);
    return 0;
}

/*======================================================================*
 *                          MCI MIDI implementation         *
 *======================================================================*/

static DWORD MIDI_mciResume(WINE_MCIMIDI* wmm, DWORD dwFlags, LPMCI_GENERIC_PARMS lpParms);

/**************************************************************************
 *              MIDI_drvOpen            [internal]
 */
static  DWORD   MIDI_drvOpen(LPCWSTR str, LPMCI_OPEN_DRIVER_PARMSW modp)
{
    WINE_MCIMIDI*   wmm;

    if (!modp) return 0xFFFFFFFF;

    wmm = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WINE_MCIMIDI));

    if (!wmm)
    return 0;

    wmm->wDevID = modp->wDeviceID;
    mciSetDriverData(wmm->wDevID, (DWORD_PTR)wmm);
    modp->wCustomCommandTable = MCI_NO_COMMAND_TABLE;
    modp->wType = MCI_DEVTYPE_SEQUENCER;
    return modp->wDeviceID;
}

/**************************************************************************
 *              MCIMIDI_drvClose        [internal]
 */
static  DWORD   MIDI_drvClose(DWORD dwDevID)
{
    WINE_MCIMIDI*  wmm = (WINE_MCIMIDI*)mciGetDriverData(dwDevID);

    if (wmm) {
    HeapFree(GetProcessHeap(), 0, wmm);
    mciSetDriverData(dwDevID, 0);
    return 1;
    }
    return (dwDevID == 0xFFFFFFFF) ? 1 : 0;
}

/**************************************************************************
 *              MIDI_mciGetOpenDev      [internal]
 */
static WINE_MCIMIDI*  MIDI_mciGetOpenDev(MCIDEVICEID wDevID, UINT wMsg)
{
    WINE_MCIMIDI*   wmm = (WINE_MCIMIDI*)mciGetDriverData(wDevID);

    if (wmm == NULL || ((wmm->nUseCount == 0) ^ (wMsg == MCI_OPEN_DRIVER))) {
    WARN("Invalid wDevID=%u\n", wDevID);
    return 0;
    }
    return wmm;
}

/**************************************************************************
 *              MIDI_mciNotify          [internal]
 *
 * Notifications in MCI work like a 1-element queue.
 * Each new notification request supersedes the previous one.
 * This affects Play and Record; other commands are immediate.
 */
static void MIDI_mciNotify(DWORD_PTR hWndCallBack, WINE_MCIMIDI* wmm, UINT wStatus)
{
    /* We simply save one parameter by not passing the wDevID local
     * to the command.  They are the same (via mciGetDriverData).
     */
    MCIDEVICEID wDevID = wmm->wDevID;
    HANDLE old = InterlockedExchangePointer(&wmm->hCallback, NULL);
    if (old) mciDriverNotify(old, wDevID, MCI_NOTIFY_SUPERSEDED);
    mciDriverNotify(HWND_32(LOWORD(hWndCallBack)), wDevID, wStatus);
}

/**************************************************************************
 *              MIDI_mciReadByte        [internal]
 */
static DWORD MIDI_mciReadByte(WINE_MCIMIDI* wmm, BYTE *lpbyt)
{
    DWORD   ret = 0;

    if (lpbyt == NULL ||
    mmioRead(wmm->hFile, (HPSTR)lpbyt, sizeof(BYTE)) != (long)sizeof(BYTE)) {
    WARN("Error reading wmm=%p\n", wmm);
    ret = MCIERR_INVALID_FILE;
    }

    return ret;
}

/**************************************************************************
 *              MIDI_mciReadWord        [internal]
 */
static DWORD MIDI_mciReadWord(WINE_MCIMIDI* wmm, LPWORD lpw)
{
    BYTE    hibyte, lobyte;
    DWORD   ret = MCIERR_INVALID_FILE;

    if (lpw != NULL &&
    MIDI_mciReadByte(wmm, &hibyte) == 0 &&
    MIDI_mciReadByte(wmm, &lobyte) == 0) {
    *lpw = ((WORD)hibyte << 8) + lobyte;
    ret = 0;
    }
    return ret;
}

/**************************************************************************
 *              MIDI_mciReadLong        [internal]
 */
static DWORD MIDI_mciReadLong(WINE_MCIMIDI* wmm, LPDWORD lpdw)
{
    WORD    hiword, loword;
    DWORD   ret = MCIERR_INVALID_FILE;

    if (lpdw != NULL &&
    MIDI_mciReadWord(wmm, &hiword) == 0 &&
    MIDI_mciReadWord(wmm, &loword) == 0) {
    *lpdw = MAKELONG(loword, hiword);
    ret = 0;
    }
    return ret;
}

/**************************************************************************
 *                  MIDI_mciReadVaryLen     [internal]
 */
static WORD MIDI_mciReadVaryLen(WINE_MCIMIDI* wmm, LPDWORD lpdw)
{
    BYTE    byte;
    DWORD   value = 0;
    WORD    ret = 0;

    if (lpdw == NULL) {
    ret = MCIERR_INVALID_FILE;
    } else {
    do {
        if (MIDI_mciReadByte(wmm, &byte) != 0) {
        return 0;
        }
        value = (value << 7) + (byte & 0x7F);
        ret++;
    } while (byte & 0x80);
    *lpdw = value;
    /*
      TRACE("val=%08X\n", value);
    */
    }
    return ret;
}

/**************************************************************************
 *              MIDI_mciReadNextEvent       [internal]
 */
static DWORD    MIDI_mciReadNextEvent(WINE_MCIMIDI* wmm, MCI_MIDITRACK* mmt)
{
    BYTE    b1, b2 = 0, b3;
    WORD    hw = 0;
    DWORD   evtPulse;
    DWORD   evtLength;
    DWORD   tmp;

    if (mmioSeek(wmm->hFile, mmt->dwIndex, SEEK_SET) != mmt->dwIndex) {
    WARN("Can't seek at %08X\n", mmt->dwIndex);
    return MCIERR_INVALID_FILE;
    }
    evtLength = MIDI_mciReadVaryLen(wmm, &evtPulse) + 1;    /* > 0 */
    MIDI_mciReadByte(wmm, &b1);
    switch (b1) {
    case 0xF0:
    case 0xF7:
    evtLength += MIDI_mciReadVaryLen(wmm, &tmp);
    evtLength += tmp;
    break;
    case 0xFF:
    MIDI_mciReadByte(wmm, &b2); evtLength++;

    evtLength += MIDI_mciReadVaryLen(wmm, &tmp);
    if (evtLength >= 0x10000u) {
        /* this limitation shouldn't be a problem */
        WARN("Ouch !! Implementation limitation to 64k bytes for a MIDI event is overflowed\n");
        hw = 0xFFFF;
    } else {
        hw = LOWORD(evtLength);
    }
    evtLength += tmp;
    break;
    default:
    if (b1 & 0x80) { /* use running status ? */
        mmt->wLastCommand = b1;
        MIDI_mciReadByte(wmm, &b2); evtLength++;
    } else {
        b2 = b1;
        b1 = mmt->wLastCommand;
    }
    switch ((b1 >> 4) & 0x07) {
    case 0: case 1: case 2: case 3: case 6:
        MIDI_mciReadByte(wmm, &b3); evtLength++;
        hw = b3;
        break;
    case 4: case 5:
        break;
    case 7:
        WARN("Strange indeed b1=0x%02x\n", b1);
    }
    break;
    }
    if (mmt->dwIndex + evtLength > mmt->dwLast)
    return MCIERR_INTERNAL;

    mmt->dwEventPulse += evtPulse;
    mmt->dwEventData   = (hw << 16) + (b2 << 8) + b1;
    mmt->wEventLength  = evtLength;

    /*
      TRACE("[%u] => pulse=%08x(%08x), data=%08x, length=%u\n",
      mmt->wTrackNr, mmt->dwEventPulse, evtPulse,
      mmt->dwEventData, mmt->wEventLength);
    */
    return 0;
}

/**************************************************************************
 *              MIDI_mciReadMTrk        [internal]
 */
static DWORD MIDI_mciReadMTrk(WINE_MCIMIDI* wmm, MCI_MIDITRACK* mmt)
{
    DWORD       toberead;
    FOURCC      fourcc;

    if (mmioRead(wmm->hFile, (HPSTR)&fourcc, (long)sizeof(FOURCC)) !=
    (long)sizeof(FOURCC)) {
    return MCIERR_INVALID_FILE;
    }

    if (fourcc != mmioFOURCC('M', 'T', 'r', 'k')) {
    WARN("Can't synchronize on 'MTrk' !\n");
    return MCIERR_INVALID_FILE;
    }

    if (MIDI_mciReadLong(wmm, &toberead) != 0) {
    return MCIERR_INVALID_FILE;
    }
    mmt->dwFirst = mmioSeek(wmm->hFile, 0, SEEK_CUR); /* >= 0 */
    mmt->dwLast = mmt->dwFirst + toberead;

    /* compute # of pulses in this track */
    mmt->dwIndex = mmt->dwFirst;
    mmt->dwEventPulse = 0;

    while (MIDI_mciReadNextEvent(wmm, mmt) == 0 && LOWORD(mmt->dwEventData) != 0x2FFF) {
    char    buf[1024];
    WORD    len;

    mmt->dwIndex += mmt->wEventLength;

    switch (LOWORD(mmt->dwEventData)) {
    case 0x02FF:
    case 0x03FF:
        /* position after meta data header */
        mmioSeek(wmm->hFile, mmt->dwIndex + HIWORD(mmt->dwEventData), SEEK_SET);
        len = mmt->wEventLength - HIWORD(mmt->dwEventData);

        if (len >= sizeof(buf)) {
        WARN("Buffer for text is too small (%u are needed)\n", len);
        len = sizeof(buf) - 1;
        }
            if (mmioRead(wmm->hFile, buf, len) == len) {
        buf[len] = 0;   /* end string in case */
        switch (HIBYTE(LOWORD(mmt->dwEventData))) {
        case 0x02:
            if (wmm->lpstrCopyright) {
            WARN("Two copyright notices (%s|%s)\n", debugstr_w(wmm->lpstrCopyright), buf);
            } else {
                        len = MultiByteToWideChar( CP_ACP, 0, buf, -1, NULL, 0 );
                        wmm->lpstrCopyright = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
                        MultiByteToWideChar( CP_ACP, 0, buf, -1, wmm->lpstrCopyright, len );
            }
            break;
        case 0x03:
            if (wmm->lpstrName) {
            WARN("Two names (%s|%s)\n", debugstr_w(wmm->lpstrName), buf);
            } else {
                        len = MultiByteToWideChar( CP_ACP, 0, buf, -1, NULL, 0 );
                        wmm->lpstrName = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
                        MultiByteToWideChar( CP_ACP, 0, buf, -1, wmm->lpstrName, len );
            }
            break;
        }
        }
        break;
    }
    }
    mmt->dwLength = mmt->dwEventPulse;

    TRACE("Track %u has %u bytes and %u pulses\n", mmt->wTrackNr, toberead, mmt->dwLength);

    /* reset track data */
    mmt->wStatus = 1;   /* ok, playing */
    mmt->dwIndex = mmt->dwFirst;
    mmt->dwEventPulse = 0;

    if (mmioSeek(wmm->hFile, 0, SEEK_CUR) != mmt->dwLast) {
    WARN("Ouch, out of sync seek=%u track=%u\n",
         mmioSeek(wmm->hFile, 0, SEEK_CUR), mmt->dwLast);
    /* position at end of this track, to be ready to read next track */
    mmioSeek(wmm->hFile, mmt->dwLast, SEEK_SET);
    }

    return 0;
}

/**************************************************************************
 *              MIDI_mciReadMThd        [internal]
 */
static DWORD MIDI_mciReadMThd(WINE_MCIMIDI* wmm, DWORD dwOffset)
{
    DWORD   toberead;
    FOURCC  fourcc;
    WORD    nt;

    TRACE("(%p, %08X);\n", wmm, dwOffset);

    if (mmioSeek(wmm->hFile, dwOffset, SEEK_SET) != dwOffset) {
    WARN("Can't seek at %08X begin of 'MThd'\n", dwOffset);
    return MCIERR_INVALID_FILE;
    }
    if (mmioRead(wmm->hFile, (HPSTR)&fourcc,
           (long) sizeof(FOURCC)) != (long) sizeof(FOURCC))
    return MCIERR_INVALID_FILE;

    if (fourcc != mmioFOURCC('M', 'T', 'h', 'd')) {
    WARN("Can't synchronize on 'MThd' !\n");
    return MCIERR_INVALID_FILE;
    }

    if (MIDI_mciReadLong(wmm, &toberead) != 0 || toberead < 3 * sizeof(WORD))
    return MCIERR_INVALID_FILE;

    if (MIDI_mciReadWord(wmm, &wmm->wFormat) != 0 ||
    MIDI_mciReadWord(wmm, &wmm->nTracks) != 0 ||
    MIDI_mciReadWord(wmm, &wmm->nDivision) != 0) {
    return MCIERR_INVALID_FILE;
    }

    TRACE("toberead=0x%08X, wFormat=0x%04X nTracks=0x%04X nDivision=0x%04X\n",
      toberead, wmm->wFormat, wmm->nTracks, wmm->nDivision);

    /* MS doc says that the MIDI MCI time format must be put by default to the format
     * stored in the MIDI file...
     */
    if (wmm->nDivision > 0x8000) {
    /* eric.pouech@lemel.fr 98/11
     * I did not check this very code (pulses are expressed as SMPTE sub-frames).
     * In about 40 MB of MIDI files I have, none was SMPTE based...
     * I'm just wondering if this is widely used :-). So, if someone has one of
     * these files, I'd like to know about it.
     */
    FIXME("Handling SMPTE time in MIDI files has not been tested\n"
          "Please report to comp.emulators.ms-windows.wine with MIDI file !\n");

    switch (HIBYTE(wmm->nDivision)) {
    case 0xE8:  wmm->dwMciTimeFormat = MCI_FORMAT_SMPTE_24; break;  /* -24 */
    case 0xE7:  wmm->dwMciTimeFormat = MCI_FORMAT_SMPTE_25; break;  /* -25 */
    case 0xE3:  wmm->dwMciTimeFormat = MCI_FORMAT_SMPTE_30DROP; break;  /* -29 */ /* is the MCI constant correct ? */
    case 0xE2:  wmm->dwMciTimeFormat = MCI_FORMAT_SMPTE_30; break;  /* -30 */
    default:
        WARN("Unsupported number of frames %d\n", -(char)HIBYTE(wmm->nDivision));
        return MCIERR_INVALID_FILE;
    }
    switch (LOBYTE(wmm->nDivision)) {
    case 4: /* MIDI Time Code */
    case 8:
    case 10:
    case 80: /* SMPTE bit resolution */
    case 100:
    default:
        WARN("Unsupported number of sub-frames %d\n", LOBYTE(wmm->nDivision));
        return MCIERR_INVALID_FILE;
    }
    } else if (wmm->nDivision == 0) {
    WARN("Number of division is 0, can't support that !!\n");
    return MCIERR_INVALID_FILE;
    } else {
    wmm->dwMciTimeFormat = MCI_FORMAT_MILLISECONDS;
    }

    switch (wmm->wFormat) {
    case 0:
    if (wmm->nTracks != 1) {
        WARN("Got type 0 file whose number of track is not 1. Setting it to 1\n");
        wmm->nTracks = 1;
    }
    break;
    case 1:
    case 2:
    break;
    default:
    WARN("Handling MIDI files which format = %d is not (yet) supported\n"
         "Please report with MIDI file !\n", wmm->wFormat);
    return MCIERR_INVALID_FILE;
    }

    if (wmm->nTracks & 0x8000) {
    /* this shouldn't be a problem... */
    WARN("Ouch !! Implementation limitation to 32k tracks per MIDI file is overflowed\n");
    wmm->nTracks = 0x7FFF;
    }

    if ((wmm->tracks = HeapAlloc(GetProcessHeap(), 0, sizeof(MCI_MIDITRACK) * wmm->nTracks)) == NULL) {
    return MCIERR_OUT_OF_MEMORY;
    }

    toberead -= 3 * sizeof(WORD);
    if (toberead > 0) {
    TRACE("Size of MThd > 6, skipping %d extra bytes\n", toberead);
    mmioSeek(wmm->hFile, toberead, SEEK_CUR);
    }

    for (nt = 0; nt < wmm->nTracks; nt++) {
    wmm->tracks[nt].wTrackNr = nt;
    if (MIDI_mciReadMTrk(wmm, &wmm->tracks[nt]) != 0) {
        WARN("Can't read 'MTrk' header\n");
        return MCIERR_INVALID_FILE;
    }
    }

    wmm->dwTempo = 500000;

    return 0;
}

/**************************************************************************
 *          MIDI_ConvertPulseToMS           [internal]
 */
static  DWORD   MIDI_ConvertPulseToMS(WINE_MCIMIDI* wmm, DWORD pulse)
{
    DWORD   ret = 0;

    /* FIXME: this function may return false values since the tempo (wmm->dwTempo)
     * may change during file playing
     */
    if (wmm->nDivision == 0) {
    FIXME("Shouldn't happen. wmm->nDivision = 0\n");
    } else if (wmm->nDivision > 0x8000) { /* SMPTE, unchecked FIXME? */
    int nf = -(char)HIBYTE(wmm->nDivision); /* number of frames     */
    int nsf = LOBYTE(wmm->nDivision);       /* number of sub-frames */
    ret = (pulse * 1000) / (nf * nsf);
    } else {
    ret = (DWORD)((double)pulse * ((double)wmm->dwTempo / 1000) /
              (double)wmm->nDivision);
    }

    /*
      TRACE("pulse=%u tempo=%u division=%u=0x%04x => ms=%u\n",
      pulse, wmm->dwTempo, wmm->nDivision, wmm->nDivision, ret);
    */

    return ret;
}

#define TIME_MS_IN_ONE_HOUR (60*60*1000)
#define TIME_MS_IN_ONE_MINUTE   (60*1000)
#define TIME_MS_IN_ONE_SECOND   (1000)

/**************************************************************************
 *          MIDI_ConvertTimeFormatToMS      [internal]
 */
static  DWORD   MIDI_ConvertTimeFormatToMS(WINE_MCIMIDI* wmm, DWORD val)
{
    DWORD   ret = 0;

    switch (wmm->dwMciTimeFormat) {
    case MCI_FORMAT_MILLISECONDS:
    ret = val;
    break;
    case MCI_FORMAT_SMPTE_24:
    ret =
        (HIBYTE(HIWORD(val)) * 125) / 3 +             LOBYTE(HIWORD(val)) * TIME_MS_IN_ONE_SECOND +
        HIBYTE(LOWORD(val)) * TIME_MS_IN_ONE_MINUTE + LOBYTE(LOWORD(val)) * TIME_MS_IN_ONE_HOUR;
    break;
    case MCI_FORMAT_SMPTE_25:
    ret =
        HIBYTE(HIWORD(val)) * 40 +            LOBYTE(HIWORD(val)) * TIME_MS_IN_ONE_SECOND +
        HIBYTE(LOWORD(val)) * TIME_MS_IN_ONE_MINUTE + LOBYTE(LOWORD(val)) * TIME_MS_IN_ONE_HOUR;
    break;
    case MCI_FORMAT_SMPTE_30:
    ret =
        (HIBYTE(HIWORD(val)) * 100) / 3 +         LOBYTE(HIWORD(val)) * TIME_MS_IN_ONE_SECOND +
        HIBYTE(LOWORD(val)) * TIME_MS_IN_ONE_MINUTE + LOBYTE(LOWORD(val)) * TIME_MS_IN_ONE_HOUR;
    break;
    default:
    WARN("Bad time format %u!\n", wmm->dwMciTimeFormat);
    }
    /*
      TRACE("val=%u=0x%08x [tf=%u] => ret=%u\n", val, val, wmm->dwMciTimeFormat, ret);
    */
    return ret;
}

/**************************************************************************
 *          MIDI_ConvertMSToTimeFormat      [internal]
 */
static  DWORD   MIDI_ConvertMSToTimeFormat(WINE_MCIMIDI* wmm, DWORD _val)
{
    DWORD   ret = 0, val = _val;
    DWORD   h, m, s, f;

    switch (wmm->dwMciTimeFormat) {
    case MCI_FORMAT_MILLISECONDS:
    ret = val;
    break;
    case MCI_FORMAT_SMPTE_24:
    case MCI_FORMAT_SMPTE_25:
    case MCI_FORMAT_SMPTE_30:
    h = val / TIME_MS_IN_ONE_HOUR;
    m = (val -= h * TIME_MS_IN_ONE_HOUR)   / TIME_MS_IN_ONE_MINUTE;
    s = (val -= m * TIME_MS_IN_ONE_MINUTE) / TIME_MS_IN_ONE_SECOND;
    switch (wmm->dwMciTimeFormat) {
    case MCI_FORMAT_SMPTE_24:
        /* one frame is 1000/24 val long, 1000/24 == 125/3 */
        f = (val * 3) / 125;    val -= (f * 125) / 3;
        break;
    case MCI_FORMAT_SMPTE_25:
        /* one frame is 1000/25 ms long, 1000/25 == 40 */
        f = val / 40;       val -= f * 40;
        break;
    case MCI_FORMAT_SMPTE_30:
        /* one frame is 1000/30 ms long, 1000/30 == 100/3 */
        f = (val * 3) / 100;    val -= (f * 100) / 3;
        break;
    default:
        FIXME("There must be some bad bad programmer\n");
        f = 0;
    }
    /* val contains the number of ms which cannot make a complete frame */
    /* FIXME: is this correct ? programs seem to be happy with that */
    ret = (f << 24) | (s << 16) | (m << 8) | (h << 0);
    break;
    default:
    WARN("Bad time format %u!\n", wmm->dwMciTimeFormat);
    }
    /*
      TRACE("val=%u [tf=%u] => ret=%u=0x%08x\n", _val, wmm->dwMciTimeFormat, ret, ret);
    */
    return ret;
}

/**************************************************************************
 *          MIDI_GetMThdLengthMS            [internal]
 */
static  DWORD   MIDI_GetMThdLengthMS(WINE_MCIMIDI* wmm)
{
    WORD    nt;
    DWORD   ret = 0;

    for (nt = 0; nt < wmm->nTracks; nt++) {
    if (wmm->wFormat == 2) {
        ret += wmm->tracks[nt].dwLength;
    } else if (wmm->tracks[nt].dwLength > ret) {
        ret = wmm->tracks[nt].dwLength;
    }
    }
    /* FIXME: this is wrong if there is a tempo change inside the file */
    return MIDI_ConvertPulseToMS(wmm, ret);
}

/**************************************************************************
 *              MIDI_mciOpen            [internal]
 */
static DWORD MIDI_mciOpen(WINE_MCIMIDI* wmm, DWORD dwFlags, LPMCI_OPEN_PARMSW lpParms)
{
    DWORD       dwRet = 0;

    TRACE("(%d, %08X, %p)\n", wmm->wDevID, dwFlags, lpParms);

    if (lpParms == NULL)    return MCIERR_NULL_PARAMETER_BLOCK;
    if (dwFlags & MCI_OPEN_SHAREABLE)
    return MCIERR_HARDWARE;

    if (wmm->nUseCount > 0) {
    /* The driver is already opened on this channel
     * MIDI sequencer cannot be shared
     */
    return MCIERR_DEVICE_OPEN;
    }
    wmm->nUseCount++;

    wmm->hFile = 0;
    wmm->hMidi = 0;
    wmm->wPort = MIDI_MAPPER;
    wmm->lpstrElementName = NULL;

    TRACE("wDevID=%d (lpParams->wDeviceID=%d)\n", wmm->wDevID, lpParms->wDeviceID);
    /*  lpParms->wDeviceID = wDevID;*/

    if (dwFlags & MCI_OPEN_ELEMENT) {
    TRACE("MCI_OPEN_ELEMENT %s!\n", debugstr_w(lpParms->lpstrElementName));
    if (lpParms->lpstrElementName && strlenW(lpParms->lpstrElementName) > 0) {
        wmm->hFile = mmioOpenW((LPWSTR)lpParms->lpstrElementName, NULL,
                   MMIO_ALLOCBUF | MMIO_READ | MMIO_DENYWRITE);
        if (wmm->hFile == 0) {
        WARN("Can't find file %s!\n", debugstr_w(lpParms->lpstrElementName));
        wmm->nUseCount--;
        return MCIERR_FILE_NOT_FOUND;
        }
            wmm->lpstrElementName = HeapAlloc(GetProcessHeap(), 0, 
                                              (strlenW(lpParms->lpstrElementName) + 1) * sizeof(WCHAR));
            strcpyW(wmm->lpstrElementName, lpParms->lpstrElementName);
    }
    }
    TRACE("hFile=%p\n", wmm->hFile);

    wmm->lpstrCopyright = NULL;
    wmm->lpstrName = NULL;

    wmm->dwStatus = MCI_MODE_NOT_READY; /* while loading file contents */
    /* spec says it should be the default format from the MIDI file... */
    wmm->dwMciTimeFormat = MCI_FORMAT_MILLISECONDS;

    if (wmm->hFile != 0) {
    MMCKINFO    ckMainRIFF;
    MMCKINFO    mmckInfo;
    DWORD       dwOffset = 0;

    if (mmioDescend(wmm->hFile, &ckMainRIFF, NULL, 0) != 0) {
        dwRet = MCIERR_INVALID_FILE;
    } else {
        TRACE("ParentChunk ckid=%.4s fccType=%.4s cksize=%08X\n",
          (LPSTR)&ckMainRIFF.ckid, (LPSTR)&ckMainRIFF.fccType, ckMainRIFF.cksize);

        if (ckMainRIFF.ckid == FOURCC_RIFF && ckMainRIFF.fccType == mmioFOURCC('R', 'M', 'I', 'D')) {
        mmckInfo.ckid = mmioFOURCC('d', 'a', 't', 'a');
        mmioSeek(wmm->hFile, ckMainRIFF.dwDataOffset + ((ckMainRIFF.cksize + 1) & ~1), SEEK_SET);
        if (mmioDescend(wmm->hFile, &mmckInfo, &ckMainRIFF, MMIO_FINDCHUNK) == 0) {
            TRACE("... is a 'RMID' file\n");
            dwOffset = mmckInfo.dwDataOffset;
        } else {
            dwRet = MCIERR_INVALID_FILE;
        }
        }
        if (dwRet == 0 && MIDI_mciReadMThd(wmm, dwOffset) != 0) {
        WARN("Can't read 'MThd' header\n");
        dwRet = MCIERR_INVALID_FILE;
        }
    }
    } else {
    TRACE("hFile==0, setting #tracks to 0; is this correct ?\n");
    wmm->nTracks = 0;
    wmm->wFormat = 0;
    wmm->nDivision = 1;
    }
    if (dwRet != 0) {
    wmm->nUseCount--;
    if (wmm->hFile != 0)
        mmioClose(wmm->hFile, 0);
    wmm->hFile = 0;
    } else {
    wmm->dwPositionMS = 0;
    wmm->dwStatus = MCI_MODE_STOP;
    if (dwFlags & MCI_NOTIFY)
        MIDI_mciNotify(lpParms->dwCallback, wmm, MCI_NOTIFY_SUCCESSFUL);
    }
    return dwRet;
}

/**************************************************************************
 *              MIDI_mciStop            [internal]
 */
static DWORD MIDI_mciStop(WINE_MCIMIDI* wmm, DWORD dwFlags, LPMCI_GENERIC_PARMS lpParms)
{
    DWORD       dwRet = 0;

    TRACE("(%d, %08X, %p);\n", wmm->wDevID, dwFlags, lpParms);

    if (wmm->dwStatus != MCI_MODE_STOP) {
    HANDLE old = InterlockedExchangePointer(&wmm->hCallback, NULL);
    if (old) mciDriverNotify(old, wmm->wDevID, MCI_NOTIFY_ABORTED);
    }

    if (wmm->dwStatus != MCI_MODE_STOP) {
    int oldstat = wmm->dwStatus;

    wmm->dwStatus = MCI_MODE_NOT_READY;
    if (oldstat == MCI_MODE_PAUSE)
        dwRet = midiOutReset((HMIDIOUT)wmm->hMidi);

    while (wmm->dwStatus != MCI_MODE_STOP)
        Sleep(10);
    }

    /* sanity reset */
    wmm->dwStatus = MCI_MODE_STOP;

    if ((dwFlags & MCI_NOTIFY) && lpParms && MMSYSERR_NOERROR==dwRet)
    MIDI_mciNotify(lpParms->dwCallback, wmm, MCI_NOTIFY_SUCCESSFUL);
    return dwRet;
}

/**************************************************************************
 *              MIDI_mciClose           [internal]
 */
static DWORD MIDI_mciClose(WINE_MCIMIDI* wmm, DWORD dwFlags, LPMCI_GENERIC_PARMS lpParms)
{

    TRACE("(%d, %08X, %p);\n", wmm->wDevID, dwFlags, lpParms);

    if (wmm->dwStatus != MCI_MODE_STOP) {
    /* mciStop handles MCI_NOTIFY_ABORTED */
    MIDI_mciStop(wmm, MCI_WAIT, lpParms);
    }

    wmm->nUseCount--;
    if (wmm->nUseCount == 0) {
    if (wmm->hFile != 0) {
        mmioClose(wmm->hFile, 0);
        wmm->hFile = 0;
        TRACE("hFile closed !\n");
    }
    HeapFree(GetProcessHeap(), 0, wmm->tracks);
    HeapFree(GetProcessHeap(), 0, wmm->lpstrElementName);
    HeapFree(GetProcessHeap(), 0, wmm->lpstrCopyright);
    HeapFree(GetProcessHeap(), 0, wmm->lpstrName);
    } else {
    TRACE("Shouldn't happen... nUseCount=%d\n", wmm->nUseCount);
    return MCIERR_INTERNAL;
    }

    if ((dwFlags & MCI_NOTIFY) && lpParms) {
    MIDI_mciNotify(lpParms->dwCallback, wmm, MCI_NOTIFY_SUCCESSFUL);
    }
    return 0;
}

/**************************************************************************
 *              MIDI_mciFindNextEvent       [internal]
 */
static MCI_MIDITRACK*   MIDI_mciFindNextEvent(WINE_MCIMIDI* wmm, LPDWORD hiPulse)
{
    WORD        cnt, nt;
    MCI_MIDITRACK*  mmt;

    *hiPulse = 0xFFFFFFFFul;
    cnt = 0xFFFFu;
    for (nt = 0; nt < wmm->nTracks; nt++) {
    mmt = &wmm->tracks[nt];

    if (mmt->wStatus == 0)
        continue;
    if (mmt->dwEventPulse < *hiPulse) {
        *hiPulse = mmt->dwEventPulse;
        cnt = nt;
    }
    }
    return (cnt == 0xFFFFu) ? 0 /* no more event on all tracks */
    : &wmm->tracks[cnt];
}

/**************************************************************************
 *              MIDI_mciPlay            [internal]
 */
static DWORD MIDI_mciPlay(WINE_MCIMIDI* wmm, DWORD dwFlags, LPMCI_PLAY_PARMS lpParms)
{
    DWORD       dwStartMS, dwEndMS;
    DWORD       dwRet = 0;
    WORD        doPlay, nt;
    MCI_MIDITRACK*  mmt;
    DWORD       hiPulse;
    HANDLE      oldcb;

    TRACE("(%d, %08X, %p);\n", wmm->wDevID, dwFlags, lpParms);

    if (wmm->hFile == 0) {
    WARN("Can't play: no file %s!\n", debugstr_w(wmm->lpstrElementName));
    return MCIERR_FILE_NOT_FOUND;
    }

    if (wmm->dwStatus != MCI_MODE_STOP) {
    if (wmm->dwStatus == MCI_MODE_PAUSE) {
        /* FIXME: parameters (start/end) in lpParams may not be used */
        return MIDI_mciResume(wmm, dwFlags, (LPMCI_GENERIC_PARMS)lpParms);
    }
    WARN("Can't play: device is not stopped !\n");
    return MCIERR_INTERNAL;
    }

    if (!(dwFlags & MCI_WAIT)) {
    return MCI_SendCommandAsync(wmm->wDevID, MCI_PLAY, dwFlags, (DWORD_PTR)lpParms, sizeof(MCI_PLAY_PARMS));
    }

    if (lpParms && (dwFlags & MCI_FROM)) {
    dwStartMS = MIDI_ConvertTimeFormatToMS(wmm, lpParms->dwFrom);
    } else {
    dwStartMS = wmm->dwPositionMS;
    }

    if (lpParms && (dwFlags & MCI_TO)) {
    dwEndMS = MIDI_ConvertTimeFormatToMS(wmm, lpParms->dwTo);
    } else {
    dwEndMS = 0xFFFFFFFFul;
    }

    TRACE("Playing from %u to %u\n", dwStartMS, dwEndMS);

    oldcb = InterlockedExchangePointer(&wmm->hCallback,
    (dwFlags & MCI_NOTIFY) ? HWND_32(LOWORD(lpParms->dwCallback)) : NULL);
    if (oldcb) mciDriverNotify(oldcb, wmm->wDevID, MCI_NOTIFY_ABORTED);
    oldcb = NULL;

    /* init tracks */
    for (nt = 0; nt < wmm->nTracks; nt++) {
    mmt = &wmm->tracks[nt];

    mmt->wStatus = 1;   /* ok, playing */
    mmt->dwIndex = mmt->dwFirst;
    if (wmm->wFormat == 2 && nt > 0) {
        mmt->dwEventPulse = wmm->tracks[nt - 1].dwLength;
    } else {
        mmt->dwEventPulse = 0;
    }
    MIDI_mciReadNextEvent(wmm, mmt); /* FIXME == 0 */
    }

    dwRet = midiOutOpen((LPHMIDIOUT)&wmm->hMidi, wmm->wPort, 0L, 0L, CALLBACK_NULL);
    if (dwRet != MMSYSERR_NOERROR) {
    return dwRet;
    }

    wmm->dwPulse = 0;
    wmm->dwTempo = 500000;
    wmm->dwStatus = MCI_MODE_PLAY;
    wmm->dwPositionMS = 0;
    wmm->wStartedPlaying = FALSE;

    while (wmm->dwStatus != MCI_MODE_STOP && wmm->dwStatus != MCI_MODE_NOT_READY) {
    /* it seems that in case of multi-threading, gcc is optimizing just a little bit
     * too much. Tell gcc not to optimize status value using volatile.
     */
    while (((volatile WINE_MCIMIDI*)wmm)->dwStatus == MCI_MODE_PAUSE);

    doPlay = (wmm->dwPositionMS >= dwStartMS && wmm->dwPositionMS <= dwEndMS);

    TRACE("wmm->dwStatus=%d, doPlay=%c\n", wmm->dwStatus, doPlay ? 'T' : 'F');

    if ((mmt = MIDI_mciFindNextEvent(wmm, &hiPulse)) == NULL)
        break;  /* no more event on tracks */

    /* if starting playing, then set StartTicks to the value it would have had
     * if play had started at position 0
     */
    if (doPlay && !wmm->wStartedPlaying) {
        wmm->dwStartTicks = GetTickCount() - MIDI_ConvertPulseToMS(wmm, wmm->dwPulse);
        wmm->wStartedPlaying = TRUE;
        TRACE("Setting dwStartTicks to %u\n", wmm->dwStartTicks);
    }

    if (hiPulse > wmm->dwPulse) {
        wmm->dwPositionMS += MIDI_ConvertPulseToMS(wmm, hiPulse - wmm->dwPulse);
        if (doPlay) {
        DWORD   togo = wmm->dwStartTicks + wmm->dwPositionMS;
        DWORD   tc = GetTickCount();

        TRACE("Pulses hi=0x%08x <> cur=0x%08x\n", hiPulse, wmm->dwPulse);
        TRACE("Wait until %u => %u ms\n",
              tc - wmm->dwStartTicks, togo - wmm->dwStartTicks);
        if (tc < togo)
            Sleep(togo - tc);
        }
        wmm->dwPulse = hiPulse;
    }

    switch (LOBYTE(LOWORD(mmt->dwEventData))) {
    case 0xF0:
    case 0xF7:  /* sysex events */
        {
        FIXME("Not handling SysEx events (yet)\n");
        }
        break;
    case 0xFF:
        /* position after meta data header */
        mmioSeek(wmm->hFile, mmt->dwIndex + HIWORD(mmt->dwEventData), SEEK_SET);
        switch (HIBYTE(LOWORD(mmt->dwEventData))) {
        case 0x00: /* 16-bit sequence number */
        if (TRACE_ON(mcimidi)) {
            WORD    twd;

            MIDI_mciReadWord(wmm, &twd);    /* == 0 */
            TRACE("Got sequence number %u\n", twd);
        }
        break;
        case 0x01: /* any text */
        case 0x02: /* Copyright Message text */
        case 0x03: /* Sequence/Track Name text */
        case 0x04: /* Instrument Name text */
        case 0x05: /* Lyric text */
        case 0x06: /* Marker text */
        case 0x07: /* Cue-point text */
        if (TRACE_ON(mcimidi)) {
            char    buf[1024];
            WORD    len = mmt->wEventLength - HIWORD(mmt->dwEventData);
            static const char* const    info[8] = {"", "Text", "Copyright", "Seq/Trk name",
                               "Instrument", "Lyric", "Marker", "Cue-point"};
            WORD    idx = HIBYTE(LOWORD(mmt->dwEventData));

            if (len >= sizeof(buf)) {
            WARN("Buffer for text is too small (%u are needed)\n", len);
            len = sizeof(buf) - 1;
            }
                    if (mmioRead(wmm->hFile, buf, len) == len) {
            buf[len] = 0;   /* end string in case */
            TRACE("%s => \"%s\"\n", (idx < 8 ) ? info[idx] : "", buf);
            } else {
            WARN("Couldn't read data for %s\n", (idx < 8) ? info[idx] : "");
            }
        }
        break;
        case 0x20:
        /* MIDI channel (cc) */
        if (FIXME_ON(mcimidi)) {
            BYTE    bt;

            MIDI_mciReadByte(wmm, &bt); /* == 0 */
            FIXME("NIY: MIDI channel=%u, track=%u\n", bt, mmt->wTrackNr);
        }
        break;
        case 0x21:
        /* MIDI port (pp) */
        if (FIXME_ON(mcimidi)) {
            BYTE    bt;

            MIDI_mciReadByte(wmm, &bt); /* == 0 */
            FIXME("NIY: MIDI port=%u, track=%u\n", bt, mmt->wTrackNr);
        }
        break;
        case 0x2F: /* end of track */
        mmt->wStatus = 0;
        break;
        case 0x51:/* set tempo */
        /* Tempo is expressed in -seconds per midi quarter note
         * for format 1 MIDI files, this can only be present on track #0
         */
        if (mmt->wTrackNr != 0 && wmm->wFormat == 1) {
            WARN("For format #1 MIDI files, tempo can only be changed on track #0 (%u)\n", mmt->wTrackNr);
        } else {
            BYTE    tbt;
            DWORD   value = 0;

            MIDI_mciReadByte(wmm, &tbt);    value  = ((DWORD)tbt) << 16;
            MIDI_mciReadByte(wmm, &tbt);    value |= ((DWORD)tbt) << 8;
            MIDI_mciReadByte(wmm, &tbt);    value |= ((DWORD)tbt) << 0;
            TRACE("Setting tempo to %d (BPM=%d)\n", wmm->dwTempo, (value) ? (60000000 / value) : 0);
            wmm->dwTempo = value;
        }
        break;
        case 0x54: /* (hour) (min) (second) (frame) (fractional-frame) - SMPTE track start */
        if (mmt->wTrackNr != 0 && wmm->wFormat == 1) {
            WARN("For format #1 MIDI files, SMPTE track start can only be expressed on track #0 (%u)\n", mmt->wTrackNr);
        } if (mmt->dwEventPulse != 0) {
            WARN("SMPTE track start can only be expressed at start of track (%u)\n", mmt->dwEventPulse);
        } else {
            BYTE    h, m, s, f, ff;

            MIDI_mciReadByte(wmm, &h);
            MIDI_mciReadByte(wmm, &m);
            MIDI_mciReadByte(wmm, &s);
            MIDI_mciReadByte(wmm, &f);
            MIDI_mciReadByte(wmm, &ff);
            FIXME("NIY: SMPTE track start %u:%u:%u %u.%u\n", h, m, s, f, ff);
        }
        break;
        case 0x58: /* file rhythm */
        if (TRACE_ON(mcimidi)) {
            BYTE    num, den, cpmc, _32npqn;

            MIDI_mciReadByte(wmm, &num);
            MIDI_mciReadByte(wmm, &den);        /* to notate e.g. 6/8 */
            MIDI_mciReadByte(wmm, &cpmc);       /* number of MIDI clocks per metronome click */
            MIDI_mciReadByte(wmm, &_32npqn);        /* number of notated 32nd notes per MIDI quarter note */

            TRACE("%u/%u, clock per metronome click=%u, 32nd notes by 1/4 note=%u\n", num, 1 << den, cpmc, _32npqn);
        }
        break;
        case 0x59: /* key signature */
        if (TRACE_ON(mcimidi)) {
            BYTE    sf, mm;

            MIDI_mciReadByte(wmm, &sf);
            MIDI_mciReadByte(wmm, &mm);

            if (sf >= 0x80)     TRACE("%d flats\n", -(char)sf);
            else if (sf > 0)    TRACE("%d sharps\n", (char)sf);
            else        TRACE("Key of C\n");
            TRACE("Mode: %s\n", (mm == 0) ? "major" : "minor");
        }
        break;
        default:
        WARN("Unknown MIDI meta event %02x. Skipping...\n", HIBYTE(LOWORD(mmt->dwEventData)));
        break;
        }
        break;
    default:
        if (doPlay) {
        dwRet = midiOutShortMsg((HMIDIOUT)wmm->hMidi, mmt->dwEventData);
        } else {
        switch (LOBYTE(LOWORD(mmt->dwEventData)) & 0xF0) {
        case MIDI_NOTEON:
        case MIDI_NOTEOFF:
            dwRet = 0;
            break;
        default:
            dwRet = midiOutShortMsg((HMIDIOUT)wmm->hMidi, mmt->dwEventData);
        }
        }
    }
    mmt->dwIndex += mmt->wEventLength;
    if (mmt->dwIndex < mmt->dwFirst || mmt->dwIndex >= mmt->dwLast) {
        mmt->wStatus = 0;
    }
    if (mmt->wStatus) {
        MIDI_mciReadNextEvent(wmm, mmt);
    }
    }

    midiOutReset((HMIDIOUT)wmm->hMidi);

    dwRet = midiOutClose((HMIDIOUT)wmm->hMidi);

    if (dwFlags & MCI_NOTIFY)
    oldcb = InterlockedExchangePointer(&wmm->hCallback, NULL);

    wmm->dwStatus = MCI_MODE_STOP;

    /* Let the potentially asynchronous commands support FAILURE notification. */
    if (oldcb) mciDriverNotify(oldcb, wmm->wDevID,
    dwRet ? MCI_NOTIFY_FAILURE : MCI_NOTIFY_SUCCESSFUL);
    return dwRet;
}

/**************************************************************************
 *              MIDI_mciPause           [internal]
 */
static DWORD MIDI_mciPause(WINE_MCIMIDI* wmm, DWORD dwFlags, LPMCI_GENERIC_PARMS lpParms)
{
    TRACE("(%d, %08X, %p);\n", wmm->wDevID, dwFlags, lpParms);

    if (wmm->dwStatus == MCI_MODE_PLAY) {
    /* stop all notes */
    unsigned chn;
    for (chn = 0; chn < 16; chn++)
        midiOutShortMsg((HMIDIOUT)(wmm->hMidi), 0x78B0 | chn);
    wmm->dwStatus = MCI_MODE_PAUSE;
    }
    if ((dwFlags & MCI_NOTIFY) && lpParms)
    MIDI_mciNotify(lpParms->dwCallback, wmm, MCI_NOTIFY_SUCCESSFUL);
    return 0;
}

/**************************************************************************
 *              MIDI_mciResume          [internal]
 */
static DWORD MIDI_mciResume(WINE_MCIMIDI* wmm, DWORD dwFlags, LPMCI_GENERIC_PARMS lpParms)
{
    TRACE("(%d, %08X, %p);\n", wmm->wDevID, dwFlags, lpParms);

    if (wmm->dwStatus == MCI_MODE_PAUSE) {
    wmm->wStartedPlaying = FALSE;
    wmm->dwStatus = MCI_MODE_PLAY;
    }
    if ((dwFlags & MCI_NOTIFY) && lpParms)
    MIDI_mciNotify(lpParms->dwCallback, wmm, MCI_NOTIFY_SUCCESSFUL);
    return 0;
}

/**************************************************************************
 *              MIDI_mciSet         [internal]
 */
static DWORD MIDI_mciSet(WINE_MCIMIDI* wmm, DWORD dwFlags, LPMCI_SEQ_SET_PARMS lpParms)
{
    TRACE("(%d, %08X, %p);\n", wmm->wDevID, dwFlags, lpParms);

    if (lpParms == NULL)    return MCIERR_NULL_PARAMETER_BLOCK;

    if (dwFlags & MCI_SET_TIME_FORMAT) {
    switch (lpParms->dwTimeFormat) {
    case MCI_FORMAT_MILLISECONDS:
        TRACE("MCI_FORMAT_MILLISECONDS !\n");
        wmm->dwMciTimeFormat = MCI_FORMAT_MILLISECONDS;
        break;
    case MCI_FORMAT_SMPTE_24:
        TRACE("MCI_FORMAT_SMPTE_24 !\n");
        wmm->dwMciTimeFormat = MCI_FORMAT_SMPTE_24;
        break;
    case MCI_FORMAT_SMPTE_25:
        TRACE("MCI_FORMAT_SMPTE_25 !\n");
        wmm->dwMciTimeFormat = MCI_FORMAT_SMPTE_25;
        break;
    case MCI_FORMAT_SMPTE_30:
        TRACE("MCI_FORMAT_SMPTE_30 !\n");
        wmm->dwMciTimeFormat = MCI_FORMAT_SMPTE_30;
        break;
    default:
        WARN("Bad time format %u!\n", lpParms->dwTimeFormat);
        return MCIERR_BAD_TIME_FORMAT;
    }
    }
    if (dwFlags & MCI_SET_VIDEO) {
    TRACE("No support for video !\n");
    return MCIERR_UNSUPPORTED_FUNCTION;
    }
    if (dwFlags & MCI_SET_DOOR_OPEN) {
    TRACE("No support for door open !\n");
    return MCIERR_UNSUPPORTED_FUNCTION;
    }
    if (dwFlags & MCI_SET_DOOR_CLOSED) {
    TRACE("No support for door close !\n");
    return MCIERR_UNSUPPORTED_FUNCTION;
    }
    if (dwFlags & MCI_SET_AUDIO) {
    if (dwFlags & MCI_SET_ON) {
        TRACE("MCI_SET_ON audio !\n");
    } else if (dwFlags & MCI_SET_OFF) {
        TRACE("MCI_SET_OFF audio !\n");
    } else {
        WARN("MCI_SET_AUDIO without SET_ON or SET_OFF\n");
        return MCIERR_BAD_INTEGER;
    }

    switch (lpParms->dwAudio)
        {
        case MCI_SET_AUDIO_ALL:         TRACE("MCI_SET_AUDIO_ALL !\n"); break;
        case MCI_SET_AUDIO_LEFT:        TRACE("MCI_SET_AUDIO_LEFT !\n"); break;
        case MCI_SET_AUDIO_RIGHT:       TRACE("MCI_SET_AUDIO_RIGHT !\n"); break;
        default:                        WARN("Unknown audio channel %u\n", lpParms->dwAudio); break;
        }
    }

    if (dwFlags & MCI_SEQ_SET_MASTER)
    TRACE("MCI_SEQ_SET_MASTER !\n");
    if (dwFlags & MCI_SEQ_SET_SLAVE)
    TRACE("MCI_SEQ_SET_SLAVE !\n");
    if (dwFlags & MCI_SEQ_SET_OFFSET)
    TRACE("MCI_SEQ_SET_OFFSET !\n");
    if (dwFlags & MCI_SEQ_SET_PORT) {
    TRACE("MCI_SEQ_SET_PORT = %d\n", lpParms->dwPort);
    if ((UINT16)lpParms->dwPort != (UINT16)MIDI_MAPPER &&
        (UINT16)lpParms->dwPort >= midiOutGetNumDevs())
        /* FIXME: input/output port distinction? */
        return MCIERR_SEQ_PORT_NONEXISTENT;
    /* FIXME: Native manages to swap the device while playing! */
    wmm->wPort = lpParms->dwPort;
    }
    if (dwFlags & MCI_SEQ_SET_TEMPO)
    TRACE("MCI_SEQ_SET_TEMPO !\n");
    if (dwFlags & MCI_NOTIFY)
    MIDI_mciNotify(lpParms->dwCallback, wmm, MCI_NOTIFY_SUCCESSFUL);
    return 0;
}

/**************************************************************************
 *              MIDI_mciStatus          [internal]
 */
static DWORD MIDI_mciStatus(WINE_MCIMIDI* wmm, DWORD dwFlags, LPMCI_STATUS_PARMS lpParms)
{
    DWORD       ret = 0;

    TRACE("(%d, %08X, %p);\n", wmm->wDevID, dwFlags, lpParms);

    if (lpParms == NULL)    return MCIERR_NULL_PARAMETER_BLOCK;

    if (dwFlags & MCI_STATUS_ITEM) {
    switch (lpParms->dwItem) {
    case MCI_STATUS_CURRENT_TRACK:
        /* FIXME in Format 2 */
        lpParms->dwReturn = 1;
        TRACE("MCI_STATUS_CURRENT_TRACK => %lu\n", lpParms->dwReturn);
        break;
    case MCI_STATUS_LENGTH:
        if ((dwFlags & MCI_TRACK) && wmm->wFormat == 2) {
        if (lpParms->dwTrack >= wmm->nTracks)
            return MCIERR_BAD_INTEGER;
        /* FIXME: this is wrong if there is a tempo change inside the file */
        lpParms->dwReturn = MIDI_ConvertPulseToMS(wmm, wmm->tracks[lpParms->dwTrack].dwLength);
        } else {
        lpParms->dwReturn = MIDI_GetMThdLengthMS(wmm);
        }
        lpParms->dwReturn = MIDI_ConvertMSToTimeFormat(wmm, lpParms->dwReturn);
        TRACE("MCI_STATUS_LENGTH => %lu\n", lpParms->dwReturn);
        break;
    case MCI_STATUS_MODE:
        TRACE("MCI_STATUS_MODE => %u\n", wmm->dwStatus);
        lpParms->dwReturn = MAKEMCIRESOURCE(wmm->dwStatus, wmm->dwStatus);
        ret = MCI_RESOURCE_RETURNED;
        break;
    case MCI_STATUS_MEDIA_PRESENT:
        TRACE("MCI_STATUS_MEDIA_PRESENT => TRUE\n");
        lpParms->dwReturn = MAKEMCIRESOURCE(TRUE, MCI_TRUE);
        ret = MCI_RESOURCE_RETURNED;
        break;
    case MCI_STATUS_NUMBER_OF_TRACKS:
        lpParms->dwReturn = (wmm->wFormat == 2) ? wmm->nTracks : 1;
        TRACE("MCI_STATUS_NUMBER_OF_TRACKS => %lu\n", lpParms->dwReturn);
        break;
    case MCI_STATUS_POSITION:
        /* FIXME: do I need to use MCI_TRACK ? */
        lpParms->dwReturn = MIDI_ConvertMSToTimeFormat(wmm,
                               (dwFlags & MCI_STATUS_START) ? 0 : wmm->dwPositionMS);
        TRACE("MCI_STATUS_POSITION %s => %lu\n",
          (dwFlags & MCI_STATUS_START) ? "start" : "current", lpParms->dwReturn);
        break;
    case MCI_STATUS_READY:
        lpParms->dwReturn = (wmm->dwStatus == MCI_MODE_NOT_READY) ?
        MAKEMCIRESOURCE(FALSE, MCI_FALSE) : MAKEMCIRESOURCE(TRUE, MCI_TRUE);
        ret = MCI_RESOURCE_RETURNED;
        TRACE("MCI_STATUS_READY = %u\n", LOWORD(lpParms->dwReturn));
        break;
    case MCI_STATUS_TIME_FORMAT:
        lpParms->dwReturn = MAKEMCIRESOURCE(wmm->dwMciTimeFormat, MCI_FORMAT_RETURN_BASE + wmm->dwMciTimeFormat);
        TRACE("MCI_STATUS_TIME_FORMAT => %u\n", LOWORD(lpParms->dwReturn));
        ret = MCI_RESOURCE_RETURNED;
        break;
    case MCI_SEQ_STATUS_DIVTYPE:
        TRACE("MCI_SEQ_STATUS_DIVTYPE !\n");
        if (wmm->nDivision > 0x8000) {
        switch (wmm->nDivision) {
        case 0xE8:  lpParms->dwReturn = MCI_SEQ_DIV_SMPTE_24;   break;  /* -24 */
        case 0xE7:  lpParms->dwReturn = MCI_SEQ_DIV_SMPTE_25;   break;  /* -25 */
        case 0xE3:  lpParms->dwReturn = MCI_SEQ_DIV_SMPTE_30DROP;   break;  /* -29 */ /* is the MCI constant correct ? */
        case 0xE2:  lpParms->dwReturn = MCI_SEQ_DIV_SMPTE_30;   break;  /* -30 */
        default:    FIXME("There is a bad bad programmer\n");
        }
        } else {
        lpParms->dwReturn = MCI_SEQ_DIV_PPQN;
        }
        lpParms->dwReturn = MAKEMCIRESOURCE(lpParms->dwReturn,lpParms->dwReturn);
        ret = MCI_RESOURCE_RETURNED;
        break;
    case MCI_SEQ_STATUS_MASTER:
        TRACE("MCI_SEQ_STATUS_MASTER !\n");
        lpParms->dwReturn = 0;
        break;
    case MCI_SEQ_STATUS_SLAVE:
        TRACE("MCI_SEQ_STATUS_SLAVE !\n");
        lpParms->dwReturn = 0;
        break;
    case MCI_SEQ_STATUS_OFFSET:
        TRACE("MCI_SEQ_STATUS_OFFSET !\n");
        lpParms->dwReturn = 0;
        break;
    case MCI_SEQ_STATUS_PORT:
        if (wmm->wPort != (UINT16)MIDI_MAPPER)
        lpParms->dwReturn = wmm->wPort;
        else {
        lpParms->dwReturn = MAKEMCIRESOURCE(MIDI_MAPPER, MCI_SEQ_MAPPER_S);
        ret = MCI_RESOURCE_RETURNED;
        }
        TRACE("MCI_SEQ_STATUS_PORT (%u) => %d\n", wmm->wDevID, wmm->wPort);
        break;
    case MCI_SEQ_STATUS_TEMPO:
        TRACE("MCI_SEQ_STATUS_TEMPO !\n");
        lpParms->dwReturn = wmm->dwTempo;
        break;
    default:
        FIXME("Unknown command %08X !\n", lpParms->dwItem);
        return MCIERR_UNRECOGNIZED_COMMAND;
    }
    } else {
    WARN("No Status-Item!\n");
    return MCIERR_UNRECOGNIZED_COMMAND;
    }
    if ((dwFlags & MCI_NOTIFY) && HRESULT_CODE(ret)==0)
    MIDI_mciNotify(lpParms->dwCallback, wmm, MCI_NOTIFY_SUCCESSFUL);
    return ret;
}

/**************************************************************************
 *              MIDI_mciGetDevCaps      [internal]
 */
static DWORD MIDI_mciGetDevCaps(WINE_MCIMIDI* wmm, DWORD dwFlags,
                LPMCI_GETDEVCAPS_PARMS lpParms)
{
    DWORD       ret;

    TRACE("(%d, %08X, %p);\n", wmm->wDevID, dwFlags, lpParms);

    if (lpParms == NULL)    return MCIERR_NULL_PARAMETER_BLOCK;

    if (dwFlags & MCI_GETDEVCAPS_ITEM) {
    switch (lpParms->dwItem) {
    case MCI_GETDEVCAPS_DEVICE_TYPE:
        TRACE("MCI_GETDEVCAPS_DEVICE_TYPE !\n");
        lpParms->dwReturn = MAKEMCIRESOURCE(MCI_DEVTYPE_SEQUENCER, MCI_DEVTYPE_SEQUENCER);
        ret = MCI_RESOURCE_RETURNED;
        break;
    case MCI_GETDEVCAPS_HAS_AUDIO:
        TRACE("MCI_GETDEVCAPS_HAS_AUDIO !\n");
        lpParms->dwReturn = MAKEMCIRESOURCE(TRUE, MCI_TRUE);
        ret = MCI_RESOURCE_RETURNED;
        break;
    case MCI_GETDEVCAPS_HAS_VIDEO:
        TRACE("MCI_GETDEVCAPS_HAS_VIDEO !\n");
        lpParms->dwReturn = MAKEMCIRESOURCE(FALSE, MCI_FALSE);
        ret = MCI_RESOURCE_RETURNED;
        break;
    case MCI_GETDEVCAPS_USES_FILES:
        TRACE("MCI_GETDEVCAPS_USES_FILES !\n");
        lpParms->dwReturn = MAKEMCIRESOURCE(TRUE, MCI_TRUE);
        ret = MCI_RESOURCE_RETURNED;
        break;
    case MCI_GETDEVCAPS_COMPOUND_DEVICE:
        TRACE("MCI_GETDEVCAPS_COMPOUND_DEVICE !\n");
        lpParms->dwReturn = MAKEMCIRESOURCE(TRUE, MCI_TRUE);
        ret = MCI_RESOURCE_RETURNED;
        break;
    case MCI_GETDEVCAPS_CAN_EJECT:
        TRACE("MCI_GETDEVCAPS_CAN_EJECT !\n");
        lpParms->dwReturn = MAKEMCIRESOURCE(FALSE, MCI_FALSE);
        ret = MCI_RESOURCE_RETURNED;
        break;
    case MCI_GETDEVCAPS_CAN_PLAY:
        TRACE("MCI_GETDEVCAPS_CAN_PLAY !\n");
        lpParms->dwReturn = MAKEMCIRESOURCE(TRUE, MCI_TRUE);
        ret = MCI_RESOURCE_RETURNED;
        break;
    case MCI_GETDEVCAPS_CAN_RECORD:
        TRACE("MCI_GETDEVCAPS_CAN_RECORD !\n");
        lpParms->dwReturn = MAKEMCIRESOURCE(FALSE, MCI_FALSE);
        ret = MCI_RESOURCE_RETURNED;
        break;
    case MCI_GETDEVCAPS_CAN_SAVE:
        TRACE("MCI_GETDEVCAPS_CAN_SAVE !\n");
        lpParms->dwReturn = MAKEMCIRESOURCE(FALSE, MCI_FALSE);
        ret = MCI_RESOURCE_RETURNED;
        break;
    default:
        FIXME("Unknown capability (%08x) !\n", lpParms->dwItem);
        return MCIERR_UNRECOGNIZED_COMMAND;
    }
    } else {
    WARN("No GetDevCaps-Item !\n");
    return MCIERR_UNRECOGNIZED_COMMAND;
    }
    if ((dwFlags & MCI_NOTIFY) && HRESULT_CODE(ret)==0)
    MIDI_mciNotify(lpParms->dwCallback, wmm, MCI_NOTIFY_SUCCESSFUL);
    return ret;
}

/**************************************************************************
 *              MIDI_mciInfo            [internal]
 */
static DWORD MIDI_mciInfo(WINE_MCIMIDI* wmm, DWORD dwFlags, LPMCI_INFO_PARMSW lpParms)
{
    LPCWSTR     str = 0;
    DWORD       ret = 0;
    static const WCHAR wszMidiSeq[] = {'W','i','n','e','\'','s',' ','M','I','D','I',' ','s','e','q','u','e','n','c','e','r',0};

    TRACE("(%d, %08X, %p);\n", wmm->wDevID, dwFlags, lpParms);

    if (lpParms == NULL || lpParms->lpstrReturn == NULL)
    return MCIERR_NULL_PARAMETER_BLOCK;

    TRACE("buf=%p, len=%u\n", lpParms->lpstrReturn, lpParms->dwRetSize);

    switch (dwFlags & ~(MCI_WAIT|MCI_NOTIFY)) {
    case MCI_INFO_PRODUCT:      str = wszMidiSeq; break;
    case MCI_INFO_FILE:         str = wmm->lpstrElementName; break;
    case MCI_INFO_COPYRIGHT:    str = wmm->lpstrCopyright; break;
    case MCI_INFO_NAME:         str = wmm->lpstrName; break;
    default:
    WARN("Don't know this info command (%u)\n", dwFlags);
    return MCIERR_UNRECOGNIZED_COMMAND;
    }
    if (!ret) {
    if (lpParms->dwRetSize) {
        WCHAR zero = 0;
        /* FIXME? Since NT, mciwave, mciseq and mcicda set dwRetSize
         *        to the number of characters written, excluding \0. */
        lstrcpynW(lpParms->lpstrReturn, str ? str : &zero, lpParms->dwRetSize);
    } else ret = MCIERR_PARAM_OVERFLOW;
    }
    if (MMSYSERR_NOERROR==ret && (dwFlags & MCI_NOTIFY))
    MIDI_mciNotify(lpParms->dwCallback, wmm, MCI_NOTIFY_SUCCESSFUL);
    return ret;
}

/**************************************************************************
 *              MIDI_mciSeek            [internal]
 */
static DWORD MIDI_mciSeek(WINE_MCIMIDI* wmm, DWORD dwFlags, LPMCI_SEEK_PARMS lpParms)
{
    DWORD       ret = 0;

    TRACE("(%d, %08X, %p);\n", wmm->wDevID, dwFlags, lpParms);

    if (lpParms == NULL) {
    ret = MCIERR_NULL_PARAMETER_BLOCK;
    } else {
    MIDI_mciStop(wmm, MCI_WAIT, 0);

    if (dwFlags & MCI_SEEK_TO_START) {
        wmm->dwPositionMS = 0;
    } else if (dwFlags & MCI_SEEK_TO_END) {
        wmm->dwPositionMS = 0xFFFFFFFF; /* FIXME */
    } else if (dwFlags & MCI_TO) {
        wmm->dwPositionMS = MIDI_ConvertTimeFormatToMS(wmm, lpParms->dwTo);
    } else {
        WARN("dwFlag doesn't tell where to seek to...\n");
        return MCIERR_MISSING_PARAMETER;
    }

    TRACE("Seeking to position=%u ms\n", wmm->dwPositionMS);

    if (dwFlags & MCI_NOTIFY)
        MIDI_mciNotify(lpParms->dwCallback, wmm, MCI_NOTIFY_SUCCESSFUL);
    }
    return ret;
}

/*======================================================================*
 *                          MIDI entry points               *
 *======================================================================*/

/**************************************************************************
 *              DriverProc (MCISEQ.@)
 */
LRESULT CALLBACK MCIMIDI_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
                                    LPARAM dwParam1, LPARAM dwParam2)
{
    WINE_MCIMIDI*   wmm;
    switch (wMsg) {
    case DRV_LOAD:      return 1;
    case DRV_FREE:      return 1;
    case DRV_ENABLE:        return 1;
    case DRV_DISABLE:       return 1;
    case DRV_QUERYCONFIGURE:    return 1;
    case DRV_CONFIGURE:     MessageBoxA(0, "Sample Midi Driver !", "OSS Driver", MB_OK); return 1;
    case DRV_INSTALL:       return DRVCNF_RESTART;
    case DRV_REMOVE:        return DRVCNF_RESTART;
    case DRV_OPEN:      return MIDI_drvOpen((LPCWSTR)dwParam1, (LPMCI_OPEN_DRIVER_PARMSW)dwParam2);
    case DRV_CLOSE:     return MIDI_drvClose(dwDevID);
    }
    if ((wMsg < DRV_MCI_FIRST) || (wMsg > DRV_MCI_LAST)) {
    TRACE("Sending msg %04x to default driver proc\n", wMsg);
    return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
    }

    wmm = MIDI_mciGetOpenDev(dwDevID, wMsg);
    if (wmm == NULL)        return MCIERR_INVALID_DEVICE_ID;

    switch (wMsg) {
    case MCI_OPEN_DRIVER:   return MIDI_mciOpen      (wmm, dwParam1, (LPMCI_OPEN_PARMSW)     dwParam2);
    case MCI_CLOSE_DRIVER:  return MIDI_mciClose     (wmm, dwParam1, (LPMCI_GENERIC_PARMS)   dwParam2);
    case MCI_PLAY:      return MIDI_mciPlay      (wmm, dwParam1, (LPMCI_PLAY_PARMS)      dwParam2);
    case MCI_STOP:      return MIDI_mciStop      (wmm, dwParam1, (LPMCI_GENERIC_PARMS)   dwParam2);
    case MCI_SET:       return MIDI_mciSet       (wmm, dwParam1, (LPMCI_SEQ_SET_PARMS)   dwParam2);
    case MCI_PAUSE:     return MIDI_mciPause     (wmm, dwParam1, (LPMCI_GENERIC_PARMS)   dwParam2);
    case MCI_RESUME:        return MIDI_mciResume    (wmm, dwParam1, (LPMCI_GENERIC_PARMS)   dwParam2);
    case MCI_STATUS:        return MIDI_mciStatus    (wmm, dwParam1, (LPMCI_STATUS_PARMS)    dwParam2);
    case MCI_GETDEVCAPS:    return MIDI_mciGetDevCaps(wmm, dwParam1, (LPMCI_GETDEVCAPS_PARMS)dwParam2);
    case MCI_INFO:      return MIDI_mciInfo      (wmm, dwParam1, (LPMCI_INFO_PARMSW)     dwParam2);
    case MCI_SEEK:      return MIDI_mciSeek      (wmm, dwParam1, (LPMCI_SEEK_PARMS)      dwParam2);
    case MCI_OPEN:
    case MCI_CLOSE:
    FIXME("Shouldn't receive a MCI_OPEN or CLOSE message\n");
    /* fall through */
    default:
    TRACE("Unsupported command [0x%x]\n", wMsg);
        return MCIERR_UNSUPPORTED_FUNCTION; /* Win9x: MCIERR_UNRECOGNIZED_COMMAND */
    }
}