wine/dlls/winmm/wineoss/midi.c

/* -*- tab-width: 8; c-basic-offset: 4 -*- */

/*
 * Sample MIDI Wine Driver for Open Sound System (basically Linux)
 *
 * Copyright 1994 	Martin Ayotte
 * Copyright 1998 	Luiz Otavio L. Zorzella (init procedures)
 * Copyright 1998/1999	Eric POUECH :
 * 		98/7 	changes for making this MIDI driver work on OSS
 * 			current support is limited to MIDI ports of OSS systems
 * 		98/9	rewriting MCI code for MIDI
 * 		98/11 	splitted in midi.c and mcimidi.c
 *
 * 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:
 *    + use better instrument definition for OPL/2 (midiPatch.c) or
 *      use existing instrument definition (from playmidi or kmid)
 *      with a .winerc option 
 *    + have a look at OPL/3 ?
 *    + implement asynchronous playback of MidiHdr
 *    + implement STREAM'ed MidiHdr (question: how shall we share the
 *      code between the midiStream functions in MMSYSTEM/WINMM and
 *      the code for the low level driver)
 *    + use a more accurate read mechanism than the one of snooping on
 *      timers (like select on fd)
 */

#include "config.h"

#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <fcntl.h>
#include <errno.h>
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_POLL_H
#include <poll.h>
#endif
#ifdef HAVE_SYS_POLL_H
#include <sys/poll.h>
#endif

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

WINE_DEFAULT_DEBUG_CHANNEL(midi);

#ifdef HAVE_OSS_MIDI

#define MIDI_SEQ "/dev/sequencer"

typedef struct {
    int			state;                  /* -1 disabled, 0 is no recording started, 1 in recording, bit 2 set if in sys exclusive recording */
    DWORD		bufsize;
    MIDIOPENDESC	midiDesc;
    WORD		wFlags;
    LPMIDIHDR	 	lpQueueHdr;
    DWORD		dwTotalPlayed;
    unsigned char	incoming[3];
    unsigned char	incPrev;
    char		incLen;
    DWORD		startTime;
    MIDIINCAPSW         caps;
} WINE_MIDIIN;

typedef struct {
    BOOL                bEnabled;
    DWORD		bufsize;
    MIDIOPENDESC	midiDesc;
    WORD		wFlags;
    LPMIDIHDR	 	lpQueueHdr;
    DWORD		dwTotalPlayed;
    void*		lpExtra;	 	/* according to port type (MIDI, FM...), extra data when needed */
    MIDIOUTCAPSW        caps;
} WINE_MIDIOUT;

static WINE_MIDIIN	MidiInDev [MAX_MIDIINDRV ];
static WINE_MIDIOUT	MidiOutDev[MAX_MIDIOUTDRV];

/* this is the total number of MIDI out devices found (synth and port) */
static	int 		MODM_NumDevs = 0;
/* this is the number of FM synthetizers (index from 0 to NUMFMSYNTHDEVS - 1) */
static	int		MODM_NumFMSynthDevs = 0;
/* the Midi ports have index from NUMFMSYNTHDEVS to NumDevs - 1 */

/* this is the total number of MIDI out devices found */
static	int 		MIDM_NumDevs = 0;

static	int		midiSeqFD = -1;
static	int		numOpenMidiSeq = 0;
static	int		numStartedMidiIn = 0;

static CRITICAL_SECTION crit_sect;   /* protects all MidiIn buffers queues */
static CRITICAL_SECTION_DEBUG critsect_debug =
{
    0, 0, &crit_sect,
    { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
      0, 0, { 0, (DWORD)(__FILE__ ": crit_sect") }
};
static CRITICAL_SECTION crit_sect = { &critsect_debug, -1, 0, 0, 0, 0 };

static int end_thread;
static HANDLE hThread;

/*======================================================================*
 *                  Low level MIDI implementation			*
 *======================================================================*/

static int midiOpenSeq(void);
static int midiCloseSeq(void);

/**************************************************************************
 * 			MIDI_unixToWindowsDeviceType  		[internal]
 *
 * return the Windows equivalent to a Unix Device Type
 *
 */
static	int 	MIDI_UnixToWindowsDeviceType(int type)
{
    /* MOD_MIDIPORT     output port
     * MOD_SYNTH        generic internal synth
     * MOD_SQSYNTH      square wave internal synth
     * MOD_FMSYNTH      FM internal synth
     * MOD_MAPPER       MIDI mapper
     * MOD_WAVETABLE    hardware watetable internal synth
     * MOD_SWSYNTH      software internal synth
     */

    /* FIXME Is this really the correct equivalence from UNIX to
       Windows Sound type */

    switch (type) {
    case SYNTH_TYPE_FM:     return MOD_FMSYNTH;
    case SYNTH_TYPE_SAMPLE: return MOD_SYNTH;
    case SYNTH_TYPE_MIDI:   return MOD_MIDIPORT;
    default:
	ERR("Cannot determine the type of this midi device. "
	    "Assuming FM Synth\n");
	return MOD_FMSYNTH;
    }
}

/**************************************************************************
 * 			OSS_MidiInit				[internal]
 *
 * Initializes the MIDI devices information variables
 */
BOOL OSS_MidiInit(void)
{
    int 		i, status, numsynthdevs = 255, nummididevs = 255;
    struct synth_info 	sinfo;
    struct midi_info 	minfo;
    static	BOOL	bInitDone = FALSE;

    if (bInitDone)
	return TRUE;

    TRACE("Initializing the MIDI variables.\n");
    bInitDone = TRUE;

    /* try to open device */
    if (midiOpenSeq() == -1) {
	return TRUE;
    }

    /* find how many Synth devices are there in the system */
    status = ioctl(midiSeqFD, SNDCTL_SEQ_NRSYNTHS, &numsynthdevs);

    if (status == -1) {
	ERR("ioctl for nr synth failed.\n");
	midiCloseSeq();
	return TRUE;
    }

    if (numsynthdevs > MAX_MIDIOUTDRV) {
	ERR("MAX_MIDIOUTDRV (%d) was enough for the number of devices (%d). "
	    "Some FM devices will not be available.\n",MAX_MIDIOUTDRV,numsynthdevs);
	numsynthdevs = MAX_MIDIOUTDRV;
    }

    for (i = 0; i < numsynthdevs; i++) {
	/* Manufac ID. We do not have access to this with soundcard.h
	 * Does not seem to be a problem, because in mmsystem.h only
	 * Microsoft's ID is listed.
	 */
	MidiOutDev[i].caps.wMid = 0x00FF;
	MidiOutDev[i].caps.wPid = 0x0001; 	/* FIXME Product ID  */
	/* Product Version. We simply say "1" */
	MidiOutDev[i].caps.vDriverVersion = 0x001;
	MidiOutDev[i].caps.wChannelMask   = 0xFFFF;

	/* FIXME Do we have this information?
	 * Assuming the soundcards can handle
	 * MIDICAPS_VOLUME and MIDICAPS_LRVOLUME but
	 * not MIDICAPS_CACHE.
	 */
	MidiOutDev[i].caps.dwSupport      = MIDICAPS_VOLUME|MIDICAPS_LRVOLUME;

	sinfo.device = i;
	status = ioctl(midiSeqFD, SNDCTL_SYNTH_INFO, &sinfo);
	if (status == -1) {
            static const WCHAR fmt[] = {'W','i','n','e',' ','O','S','S',' ','M','i','d','i',' ','O','u','t',' ','(','#','%','d',')',' ','-',' ','d','i','s','a','b','l','e','d',0};
	    ERR("ioctl for synth info failed on %d, disabling it.\n", i);

            wsprintfW(MidiOutDev[i].caps.szPname, fmt, i);

            MidiOutDev[i].caps.wTechnology = MOD_MIDIPORT;
            MidiOutDev[i].caps.wVoices     = 16;
            MidiOutDev[i].caps.wNotes      = 16;
            MidiOutDev[i].bEnabled = FALSE;
	} else {
            MultiByteToWideChar( CP_ACP, 0, sinfo.name, -1,
                                 MidiOutDev[i].caps.szPname,
                                 sizeof(MidiOutDev[i].caps.szPname)/sizeof(WCHAR) );

            MidiOutDev[i].caps.wTechnology = MIDI_UnixToWindowsDeviceType(sinfo.synth_type);
            MidiOutDev[i].caps.wVoices     = sinfo.nr_voices;

            /* FIXME Is it possible to know the maximum
             * number of simultaneous notes of a soundcard ?
             * I believe we don't have this information, but
             * it's probably equal or more than wVoices
             */
            MidiOutDev[i].caps.wNotes      = sinfo.nr_voices;
            MidiOutDev[i].bEnabled = TRUE;
        }

	/* We also have the information sinfo.synth_subtype, not used here
	 */

	if (sinfo.capabilities & SYNTH_CAP_INPUT) {
	    FIXME("Synthesizer support MIDI in. Not supported yet (please report)\n");
	}

	TRACE("SynthOut[%d]\tname='%s' techn=%d voices=%d notes=%d chnMsk=%04x support=%ld\n"
	      "\tOSS info: synth subtype=%d capa=%lx\n",
	      i, wine_dbgstr_w(MidiOutDev[i].caps.szPname), 
              MidiOutDev[i].caps.wTechnology, 
              MidiOutDev[i].caps.wVoices, MidiOutDev[i].caps.wNotes, 
              MidiOutDev[i].caps.wChannelMask, MidiOutDev[i].caps.dwSupport,
	      sinfo.synth_subtype, (long)sinfo.capabilities);
    }

    /* find how many MIDI devices are there in the system */
    status = ioctl(midiSeqFD, SNDCTL_SEQ_NRMIDIS, &nummididevs);
    if (status == -1) {
	ERR("ioctl on nr midi failed.\n");
        nummididevs = 0;
        goto wrapup;
    }

    /* FIXME: the two restrictions below could be loosened in some cases */
    if (numsynthdevs + nummididevs > MAX_MIDIOUTDRV) {
	ERR("MAX_MIDIOUTDRV was not enough for the number of devices. "
	    "Some MIDI devices will not be available.\n");
	nummididevs = MAX_MIDIOUTDRV - numsynthdevs;
    }

    if (nummididevs > MAX_MIDIINDRV) {
	ERR("MAX_MIDIINDRV (%d) was not enough for the number of devices (%d). "
	    "Some MIDI devices will not be available.\n",MAX_MIDIINDRV,nummididevs);
	nummididevs = MAX_MIDIINDRV;
    }

    for (i = 0; i < nummididevs; i++) {
	minfo.device = i;
	status = ioctl(midiSeqFD, SNDCTL_MIDI_INFO, &minfo);
	if (status == -1) WARN("ioctl on midi info for device %d failed.\n", i);

	/* This whole part is somewhat obscure to me. I'll keep trying to dig
	   info about it. If you happen to know, please tell us. The very
	   descritive minfo.dev_type was not used here.
	*/
	/* Manufac ID. We do not have access to this with soundcard.h
	   Does not seem to be a problem, because in mmsystem.h only
	   Microsoft's ID is listed */
	MidiOutDev[numsynthdevs + i].caps.wMid = 0x00FF;
	MidiOutDev[numsynthdevs + i].caps.wPid = 0x0001; 	/* FIXME Product ID */
	/* Product Version. We simply say "1" */
	MidiOutDev[numsynthdevs + i].caps.vDriverVersion = 0x001;
        if (status == -1) {
            static const WCHAR fmt[] = {'W','i','n','e',' ','O','S','S',' ','M','i','d','i',' ','O','u','t',' ','(','#','%','d',')',' ','-',' ','d','i','s','a','b','l','e','d',0};
            wsprintfW(MidiOutDev[numsynthdevs + i].caps.szPname, fmt, numsynthdevs + i);
            MidiOutDev[numsynthdevs + i].bEnabled = FALSE;
        } else {
            MultiByteToWideChar(CP_ACP, 0, minfo.name, -1, 
                                MidiOutDev[numsynthdevs + i].caps.szPname,
                                sizeof(MidiOutDev[numsynthdevs + i].caps.szPname) / sizeof(WCHAR));
            MidiOutDev[numsynthdevs + i].bEnabled = TRUE;
        }
	MidiOutDev[numsynthdevs + i].caps.wTechnology = MOD_MIDIPORT; /* FIXME Is this right? */
	/* Does it make any difference? */
	MidiOutDev[numsynthdevs + i].caps.wVoices     = 16;
	/* Does it make any difference? */
	MidiOutDev[numsynthdevs + i].caps.wNotes      = 16;
	MidiOutDev[numsynthdevs + i].caps.wChannelMask= 0xFFFF;

	/* FIXME Does it make any difference? */
	MidiOutDev[numsynthdevs + i].caps.dwSupport   = MIDICAPS_VOLUME|MIDICAPS_LRVOLUME;

	/* This whole part is somewhat obscure to me. I'll keep trying to dig
	   info about it. If you happen to know, please tell us. The very
	   descritive minfo.dev_type was not used here.
	*/
	/* Manufac ID. We do not have access to this with soundcard.h
	   Does not seem to be a problem, because in mmsystem.h only
	   Microsoft's ID is listed */
	MidiInDev[i].caps.wMid = 0x00FF;
	MidiInDev[i].caps.wPid = 0x0001; 	/* FIXME Product ID */
	/* Product Version. We simply say "1" */
	MidiInDev[i].caps.vDriverVersion = 0x001;
        if (status == -1) {
            static const WCHAR fmt[] = {'W','i','n','e',' ','O','S','S',' ','M','i','d','i',' ','I','n',' ','(','#','%','d',')',' ','-',' ','d','i','s','a','b','l','e','d',0};
            wsprintfW(MidiInDev[i].caps.szPname, fmt, numsynthdevs + i);
            MidiInDev[i].state = -1;
        } else {
            MultiByteToWideChar(CP_ACP, 0, minfo.name, -1, 
                                MidiInDev[i].caps.szPname,
                                sizeof(MidiInDev[i].caps.szPname) / sizeof(WCHAR));
            MidiInDev[i].state = 0;
        }
	/* FIXME : could we get better information than that ? */
	MidiInDev[i].caps.dwSupport   = MIDICAPS_VOLUME|MIDICAPS_LRVOLUME;

	TRACE("MidiOut[%d]\tname='%s' techn=%d voices=%d notes=%d chnMsk=%04x support=%ld\n"
              "MidiIn [%d]\tname='%s' support=%ld\n"
	      "\tOSS info: midi dev-type=%d, capa=%lx\n",
	      i, wine_dbgstr_w(MidiOutDev[numsynthdevs + i].caps.szPname), 
              MidiOutDev[numsynthdevs + i].caps.wTechnology,
	      MidiOutDev[numsynthdevs + i].caps.wVoices, MidiOutDev[numsynthdevs + i].caps.wNotes,
	      MidiOutDev[numsynthdevs + i].caps.wChannelMask, MidiOutDev[numsynthdevs + i].caps.dwSupport,
	      i, wine_dbgstr_w(MidiInDev[i].caps.szPname), MidiInDev[i].caps.dwSupport,
	      minfo.dev_type, (long)minfo.capabilities);
    }

 wrapup:
    /* windows does not seem to differentiate Synth from MIDI devices */
    MODM_NumFMSynthDevs = numsynthdevs;
    MODM_NumDevs        = numsynthdevs + nummididevs;

    MIDM_NumDevs        = nummididevs;

    /* close file and exit */
    midiCloseSeq();

    return TRUE;
}

/**************************************************************************
 * 			MIDI_NotifyClient			[internal]
 */
static DWORD MIDI_NotifyClient(UINT wDevID, WORD wMsg,
			       DWORD dwParam1, DWORD dwParam2)
{
    DWORD 		dwCallBack;
    UINT 		uFlags;
    HANDLE		hDev;
    DWORD 		dwInstance;

    TRACE("wDevID = %04X wMsg = %d dwParm1 = %04lX dwParam2 = %04lX\n",
	  wDevID, wMsg, dwParam1, dwParam2);

    switch (wMsg) {
    case MOM_OPEN:
    case MOM_CLOSE:
    case MOM_DONE:
    case MOM_POSITIONCB:
	if (wDevID > MODM_NumDevs)
	    return MMSYSERR_BADDEVICEID;

	dwCallBack = MidiOutDev[wDevID].midiDesc.dwCallback;
	uFlags = MidiOutDev[wDevID].wFlags;
	hDev = MidiOutDev[wDevID].midiDesc.hMidi;
	dwInstance = MidiOutDev[wDevID].midiDesc.dwInstance;
	break;

    case MIM_OPEN:
    case MIM_CLOSE:
    case MIM_DATA:
    case MIM_LONGDATA:
    case MIM_ERROR:
    case MIM_LONGERROR:
    case MIM_MOREDATA:
	if (wDevID > MIDM_NumDevs)
	    return MMSYSERR_BADDEVICEID;

	dwCallBack = MidiInDev[wDevID].midiDesc.dwCallback;
	uFlags = MidiInDev[wDevID].wFlags;
	hDev = MidiInDev[wDevID].midiDesc.hMidi;
	dwInstance = MidiInDev[wDevID].midiDesc.dwInstance;
	break;
    default:
	WARN("Unsupported MSW-MIDI message %u\n", wMsg);
	return MMSYSERR_ERROR;
    }

    return DriverCallback(dwCallBack, uFlags, hDev, wMsg, dwInstance, dwParam1, dwParam2) ?
	0 : MMSYSERR_ERROR;
}

static int midi_warn = 1;
/**************************************************************************
 * 			midiOpenSeq				[internal]
 */
static int midiOpenSeq(void)
{
    if (numOpenMidiSeq == 0) {
	midiSeqFD = open(MIDI_SEQ, O_RDWR, 0);
	if (midiSeqFD == -1) {
	    if (midi_warn)
	    {
		WARN("Can't open MIDI device '%s' ! (%s). If your "
                        "program needs this (probably not): %s\n",
			MIDI_SEQ, strerror(errno),
			errno == ENOENT ?
			"create it ! (\"man MAKEDEV\" ?)" :
			errno == ENODEV ?
			"load MIDI sequencer kernel driver !" :
			errno == EACCES ?
			"grant access ! (\"man chmod\")" : ""
		);
	    }
	    midi_warn = 0;
	    return -1;
	}
#if 0
	if (fcntl(midiSeqFD, F_SETFL, O_NONBLOCK) < 0) {
	    WARN("can't set sequencer fd to non-blocking, errno %d (%s)\n", errno, strerror(errno));
	    close(midiSeqFD);
	    midiSeqFD = -1;
	    return -1;
	}
#endif
	fcntl(midiSeqFD, F_SETFD, 1); /* set close on exec flag */
	ioctl(midiSeqFD, SNDCTL_SEQ_RESET);
    }
    numOpenMidiSeq++;
    return 0;
}

/**************************************************************************
 * 			midiCloseSeq				[internal]
 */
static int midiCloseSeq(void)
{
    if (--numOpenMidiSeq == 0) {
	close(midiSeqFD);
	midiSeqFD = -1;
    }
    return 0;
}

/* FIXME: this is a bad idea, it's even not static... */
SEQ_DEFINEBUF(1024);

/* FIXME: this is not reentrant, not static - because of global variable
 * _seqbuf and al.
 */
/**************************************************************************
 * 			seqbuf_dump				[internal]
 *
 * Used by SEQ_DUMPBUF to flush the buffer.
 *
 */
void seqbuf_dump(void)
{
    if (_seqbufptr) {
	if (write(midiSeqFD, _seqbuf, _seqbufptr) == -1) {
	    WARN("Can't write data to sequencer %d, errno %d (%s)!\n",
		 midiSeqFD, errno, strerror(errno));
	}
	/* FIXME:
	 *	in any case buffer is lost so that if many errors occur the buffer
	 * will not overrun
	 */
	_seqbufptr = 0;
    }
}

/**************************************************************************
 * 			midReceiveChar				[internal]
 */
static void midReceiveChar(WORD wDevID, unsigned char value, DWORD dwTime)
{
    DWORD		toSend = 0;

    TRACE("Adding %02xh to %d[%d]\n", value, wDevID, MidiInDev[wDevID].incLen);

    if (wDevID >= MIDM_NumDevs) {
	WARN("bad devID\n");
	return;
    }
    if (MidiInDev[wDevID].state <= 0) {
	TRACE("disabled or input not started, thrown away\n");
	return;
    }

    if (MidiInDev[wDevID].state & 2) { /* system exclusive */
	LPMIDIHDR	lpMidiHdr;
	WORD 		sbfb = FALSE;

	EnterCriticalSection(&crit_sect);
	if ((lpMidiHdr = MidiInDev[wDevID].lpQueueHdr) != NULL) {
	    LPBYTE	lpData = lpMidiHdr->lpData;

	    lpData[lpMidiHdr->dwBytesRecorded++] = value;
	    if (lpMidiHdr->dwBytesRecorded == lpMidiHdr->dwBufferLength) {
		sbfb = TRUE;
	    }
	}
	if (value == 0xF7) { /* then end */
	    MidiInDev[wDevID].state &= ~2;
	    sbfb = TRUE;
	}
	if (sbfb && lpMidiHdr != NULL) {
	    lpMidiHdr = MidiInDev[wDevID].lpQueueHdr;
	    lpMidiHdr->dwFlags &= ~MHDR_INQUEUE;
	    lpMidiHdr->dwFlags |= MHDR_DONE;
	    MidiInDev[wDevID].lpQueueHdr = (LPMIDIHDR)lpMidiHdr->lpNext;
	    if (MIDI_NotifyClient(wDevID, MIM_LONGDATA, (DWORD)lpMidiHdr, dwTime) != MMSYSERR_NOERROR) {
		WARN("Couldn't notify client\n");
	    }
	}
	LeaveCriticalSection(&crit_sect);
	return;
    }

#define IS_CMD(_x)	(((_x) & 0x80) == 0x80)
#define IS_SYS_CMD(_x)	(((_x) & 0xF0) == 0xF0)

    if (!IS_CMD(value) && MidiInDev[wDevID].incLen == 0) { /* try to reuse old cmd */
	if (IS_CMD(MidiInDev[wDevID].incPrev) && !IS_SYS_CMD(MidiInDev[wDevID].incPrev)) {
	    MidiInDev[wDevID].incoming[0] = MidiInDev[wDevID].incPrev;
	    MidiInDev[wDevID].incLen = 1;
	    TRACE("Reusing old command %02xh\n", MidiInDev[wDevID].incPrev);
	} else {
	    FIXME("error for midi-in, should generate MIM_ERROR notification:"
		  " prev=%02Xh, incLen=%02Xh\n",
		  MidiInDev[wDevID].incPrev, MidiInDev[wDevID].incLen);
	    return;
	}
    }
    MidiInDev[wDevID].incoming[(int)(MidiInDev[wDevID].incLen++)] = value;
    if (MidiInDev[wDevID].incLen == 1 && !IS_SYS_CMD(MidiInDev[wDevID].incoming[0])) {
	/* store new cmd, just in case */
	MidiInDev[wDevID].incPrev = MidiInDev[wDevID].incoming[0];
    }

#undef IS_CMD
#undef IS_SYS_CMD

    switch (MidiInDev[wDevID].incoming[0] & 0xF0) {
    case MIDI_NOTEOFF:
    case MIDI_NOTEON:
    case MIDI_KEY_PRESSURE:
    case MIDI_CTL_CHANGE:
    case MIDI_PITCH_BEND:
	if (MidiInDev[wDevID].incLen == 3) {
	    toSend = (MidiInDev[wDevID].incoming[2] << 16) |
		(MidiInDev[wDevID].incoming[1] <<  8) |
		(MidiInDev[wDevID].incoming[0] <<  0);
	}
	break;
    case MIDI_PGM_CHANGE:
    case MIDI_CHN_PRESSURE:
	if (MidiInDev[wDevID].incLen == 2) {
	    toSend = (MidiInDev[wDevID].incoming[1] <<  8) |
		(MidiInDev[wDevID].incoming[0] <<  0);
	}
	break;
    case MIDI_SYSTEM_PREFIX:
	if (MidiInDev[wDevID].incoming[0] == 0xF0) {
	    MidiInDev[wDevID].state |= 2;
	    MidiInDev[wDevID].incLen = 0;
	} else {
	    if (MidiInDev[wDevID].incLen == 1) {
		toSend = (MidiInDev[wDevID].incoming[0] <<  0);
	    }
	}
	break;
    default:
	WARN("This shouldn't happen (%02X)\n", MidiInDev[wDevID].incoming[0]);
    }
    if (toSend != 0) {
	TRACE("Sending event %08lx\n", toSend);
	MidiInDev[wDevID].incLen =	0;
	dwTime -= MidiInDev[wDevID].startTime;
	if (MIDI_NotifyClient(wDevID, MIM_DATA, toSend, dwTime) != MMSYSERR_NOERROR) {
	    WARN("Couldn't notify client\n");
	}
    }
}

static DWORD WINAPI midRecThread(LPVOID arg)
{
    unsigned char buffer[256];
    int len, idx;
    DWORD dwTime;
    struct pollfd pfd;

    TRACE("Thread startup\n");

    pfd.fd = midiSeqFD;
    pfd.fd = POLLIN;
    
    while(!end_thread) {
	TRACE("Thread loop\n");

	/* Check if a event is present */
	if (poll(&pfd, 1, 250) <= 0)
	    continue;
	
	len = read(midiSeqFD, buffer, sizeof(buffer));
	TRACE("Reveived %d bytes\n", len);

	if (len < 0) continue;
	if ((len % 4) != 0) {
	    WARN("Bad length %d, errno %d (%s)\n", len, errno, strerror(errno));
	    continue;
	}

	dwTime = GetTickCount();
	
	for (idx = 0; idx < len; ) {
	    if (buffer[idx] & 0x80) {
		TRACE(
		      "Reading<8> %02x %02x %02x %02x %02x %02x %02x %02x\n",
		      buffer[idx + 0], buffer[idx + 1],
		      buffer[idx + 2], buffer[idx + 3],
		      buffer[idx + 4], buffer[idx + 5],
		      buffer[idx + 6], buffer[idx + 7]);
		      idx += 8;
	    } else {
		switch (buffer[idx + 0]) {
		case SEQ_WAIT:
		case SEQ_ECHO:
		    break;
		case SEQ_MIDIPUTC:
		    midReceiveChar(buffer[idx + 2], buffer[idx + 1], dwTime);
		    break;
		default:
		    TRACE("Unsupported event %d\n", buffer[idx + 0]);
		    break;
		}
		idx += 4;
	    }
	}
    }
    return 0;
}

/**************************************************************************
 * 				midGetDevCaps			[internal]
 */
static DWORD midGetDevCaps(WORD wDevID, LPMIDIINCAPSW lpCaps, DWORD dwSize)
{
    TRACE("(%04X, %p, %08lX);\n", wDevID, lpCaps, dwSize);

    if (wDevID >= MIDM_NumDevs) return MMSYSERR_BADDEVICEID;
    if (lpCaps == NULL)		return MMSYSERR_INVALPARAM;

    memcpy(lpCaps, &MidiInDev[wDevID].caps, min(dwSize, sizeof(*lpCaps)));

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 * 			midOpen					[internal]
 */
static DWORD midOpen(WORD wDevID, LPMIDIOPENDESC lpDesc, DWORD dwFlags)
{
    TRACE("(%04X, %p, %08lX);\n", wDevID, lpDesc, dwFlags);

    if (lpDesc == NULL) {
	WARN("Invalid Parameter !\n");
	return MMSYSERR_INVALPARAM;
    }

    /* FIXME :
     *	how to check that content of lpDesc is correct ?
     */
    if (wDevID >= MIDM_NumDevs) {
	WARN("wDevID too large (%u) !\n", wDevID);
	return MMSYSERR_BADDEVICEID;
    }
    if (MidiInDev[wDevID].state == -1) {        
        WARN("device disabled\n");
        return MIDIERR_NODEVICE;
    }
    if (MidiInDev[wDevID].midiDesc.hMidi != 0) {
	WARN("device already open !\n");
	return MMSYSERR_ALLOCATED;
    }
    if ((dwFlags & MIDI_IO_STATUS) != 0) {
	WARN("No support for MIDI_IO_STATUS in dwFlags yet, ignoring it\n");
	dwFlags &= ~MIDI_IO_STATUS;
    }
    if ((dwFlags & ~CALLBACK_TYPEMASK) != 0) {
	FIXME("Bad dwFlags\n");
	return MMSYSERR_INVALFLAG;
    }

    if (midiOpenSeq() < 0) {
	return MMSYSERR_ERROR;
    }

    if (numStartedMidiIn++ == 0) {
	end_thread = 0;
	hThread = CreateThread(NULL, 0, midRecThread, NULL, 0, NULL);
	if (!hThread) {
	    numStartedMidiIn = 0;
	    WARN("Couldn't create thread for midi-in\n");
	    midiCloseSeq();
	    return MMSYSERR_ERROR;
	}
	TRACE("Created thread for midi-in\n");
    }

    MidiInDev[wDevID].wFlags = HIWORD(dwFlags & CALLBACK_TYPEMASK);

    MidiInDev[wDevID].lpQueueHdr = NULL;
    MidiInDev[wDevID].dwTotalPlayed = 0;
    MidiInDev[wDevID].bufsize = 0x3FFF;
    MidiInDev[wDevID].midiDesc = *lpDesc;
    MidiInDev[wDevID].state = 0;
    MidiInDev[wDevID].incLen = 0;
    MidiInDev[wDevID].startTime = 0;

    if (MIDI_NotifyClient(wDevID, MIM_OPEN, 0L, 0L) != MMSYSERR_NOERROR) {
	WARN("can't notify client !\n");
	return MMSYSERR_INVALPARAM;
    }
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 * 			midClose				[internal]
 */
static DWORD midClose(WORD wDevID)
{
    int		ret = MMSYSERR_NOERROR;

    TRACE("(%04X);\n", wDevID);

    if (wDevID >= MIDM_NumDevs) {
	WARN("wDevID too big (%u) !\n", wDevID);
	return MMSYSERR_BADDEVICEID;
    }
    if (MidiInDev[wDevID].midiDesc.hMidi == 0) {
	WARN("device not opened !\n");
	return MMSYSERR_ERROR;
    }
    if (MidiInDev[wDevID].lpQueueHdr != 0) {
	return MIDIERR_STILLPLAYING;
    }

    if (midiSeqFD == -1) {
	WARN("ooops !\n");
	return MMSYSERR_ERROR;
    }
    if (--numStartedMidiIn == 0) {
	TRACE("Stopping thread for midi-in\n");
	end_thread = 1;
	if (WaitForSingleObject(hThread, 5000) != WAIT_OBJECT_0) {
	    WARN("Thread end not signaled, force termination\n");
	    TerminateThread(hThread, 0);
	}
    	TRACE("Stopped thread for midi-in\n");
    }
    midiCloseSeq();

    MidiInDev[wDevID].bufsize = 0;
    if (MIDI_NotifyClient(wDevID, MIM_CLOSE, 0L, 0L) != MMSYSERR_NOERROR) {
	WARN("can't notify client !\n");
	ret = MMSYSERR_INVALPARAM;
    }
    MidiInDev[wDevID].midiDesc.hMidi = 0;
    return ret;
}

/**************************************************************************
 * 				midAddBuffer			[internal]
 */
static DWORD midAddBuffer(WORD wDevID, LPMIDIHDR lpMidiHdr, DWORD dwSize)
{
    TRACE("(%04X, %p, %08lX);\n", wDevID, lpMidiHdr, dwSize);

    if (wDevID >= MIDM_NumDevs) return MMSYSERR_BADDEVICEID;
    if (MidiInDev[wDevID].state == -1) return MIDIERR_NODEVICE;

    if (lpMidiHdr == NULL)	return MMSYSERR_INVALPARAM;
    if (sizeof(MIDIHDR) > dwSize) return MMSYSERR_INVALPARAM;
    if (lpMidiHdr->dwBufferLength == 0) return MMSYSERR_INVALPARAM;
    if (lpMidiHdr->dwFlags & MHDR_INQUEUE) return MIDIERR_STILLPLAYING;
    if (!(lpMidiHdr->dwFlags & MHDR_PREPARED)) return MIDIERR_UNPREPARED;

    EnterCriticalSection(&crit_sect);
    if (MidiInDev[wDevID].lpQueueHdr == 0) {
	MidiInDev[wDevID].lpQueueHdr = lpMidiHdr;
    } else {
	LPMIDIHDR	ptr;

	for (ptr = MidiInDev[wDevID].lpQueueHdr;
	     ptr->lpNext != 0;
	     ptr = (LPMIDIHDR)ptr->lpNext);
	ptr->lpNext = (struct midihdr_tag*)lpMidiHdr;
    }
    LeaveCriticalSection(&crit_sect);

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 * 				midPrepare			[internal]
 */
static DWORD midPrepare(WORD wDevID, LPMIDIHDR lpMidiHdr, DWORD dwSize)
{
    TRACE("(%04X, %p, %08lX);\n", wDevID, lpMidiHdr, dwSize);

    if (dwSize < sizeof(MIDIHDR) || lpMidiHdr == 0 ||
	lpMidiHdr->lpData == 0 || (lpMidiHdr->dwFlags & MHDR_INQUEUE) != 0 ||
	lpMidiHdr->dwBufferLength >= 0x10000ul)
	return MMSYSERR_INVALPARAM;

    lpMidiHdr->lpNext = 0;
    lpMidiHdr->dwFlags |= MHDR_PREPARED;
    lpMidiHdr->dwBytesRecorded = 0;

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 * 				midUnprepare			[internal]
 */
static DWORD midUnprepare(WORD wDevID, LPMIDIHDR lpMidiHdr, DWORD dwSize)
{
    TRACE("(%04X, %p, %08lX);\n", wDevID, lpMidiHdr, dwSize);

    if (wDevID >= MIDM_NumDevs) return MMSYSERR_BADDEVICEID;
    if (MidiInDev[wDevID].state == -1) return MIDIERR_NODEVICE;

    if (dwSize < sizeof(MIDIHDR) || lpMidiHdr == 0 ||
	lpMidiHdr->lpData == 0 || lpMidiHdr->dwBufferLength >= 0x10000ul)
	return MMSYSERR_INVALPARAM;

    if (!(lpMidiHdr->dwFlags & MHDR_PREPARED)) return MIDIERR_UNPREPARED;
    if (lpMidiHdr->dwFlags & MHDR_INQUEUE) return MIDIERR_STILLPLAYING;

    lpMidiHdr->dwFlags &= ~MHDR_PREPARED;

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 * 			midReset				[internal]
 */
static DWORD midReset(WORD wDevID)
{
    DWORD		dwTime = GetTickCount();

    TRACE("(%04X);\n", wDevID);

    if (wDevID >= MIDM_NumDevs) return MMSYSERR_BADDEVICEID;
    if (MidiInDev[wDevID].state == -1) return MIDIERR_NODEVICE;

    EnterCriticalSection(&crit_sect);
    while (MidiInDev[wDevID].lpQueueHdr) {
	MidiInDev[wDevID].lpQueueHdr->dwFlags &= ~MHDR_INQUEUE;
	MidiInDev[wDevID].lpQueueHdr->dwFlags |= MHDR_DONE;
	/* FIXME: when called from 16 bit, lpQueueHdr needs to be a segmented ptr */
	if (MIDI_NotifyClient(wDevID, MIM_LONGDATA,
			      (DWORD)MidiInDev[wDevID].lpQueueHdr, dwTime) != MMSYSERR_NOERROR) {
	    WARN("Couldn't notify client\n");
	}
	MidiInDev[wDevID].lpQueueHdr = (LPMIDIHDR)MidiInDev[wDevID].lpQueueHdr->lpNext;
    }
    LeaveCriticalSection(&crit_sect);

    return MMSYSERR_NOERROR;
}


/**************************************************************************
 * 			midStart				[internal]
 */
static DWORD midStart(WORD wDevID)
{
    TRACE("(%04X);\n", wDevID);

    if (wDevID >= MIDM_NumDevs) return MMSYSERR_BADDEVICEID;
    if (MidiInDev[wDevID].state == -1) return MIDIERR_NODEVICE;

    MidiInDev[wDevID].state = 1;
    MidiInDev[wDevID].startTime = GetTickCount();
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *			midStop					[internal]
 */
static DWORD midStop(WORD wDevID)
{
    TRACE("(%04X);\n", wDevID);

    if (wDevID >= MIDM_NumDevs) return MMSYSERR_BADDEVICEID;
    if (MidiInDev[wDevID].state == -1) return MIDIERR_NODEVICE;

    MidiInDev[wDevID].state = 0;
    return MMSYSERR_NOERROR;
}

/*-----------------------------------------------------------------------*/

typedef struct sVoice {
    int			note;			/* 0 means not used */
    int			channel;
    unsigned		cntMark : 30,
	                status : 2;
#define sVS_UNUSED	0
#define sVS_PLAYING	1
#define sVS_SUSTAINED	2
} sVoice;

typedef struct sChannel {
    int			program;

    int			bender;
    int			benderRange;
    /* controlers */
    int			bank;		/* CTL_BANK_SELECT */
    int			volume;		/* CTL_MAIN_VOLUME */
    int			balance;	/* CTL_BALANCE     */
    int			expression;	/* CTL_EXPRESSION  */
    int			sustain;	/* CTL_SUSTAIN     */

    unsigned char	nrgPmtMSB;	/* Non register Parameters */
    unsigned char	nrgPmtLSB;
    unsigned char	regPmtMSB;	/* Non register Parameters */
    unsigned char	regPmtLSB;
} sChannel;

typedef struct sFMextra {
    unsigned		counter;
    int			drumSetMask;
    sChannel		channel[16];	/* MIDI has only 16 channels */
    sVoice		voice[1];	/* dyn allocated according to sound card */
    /* do not append fields below voice[1] since the size of this structure
     * depends on the number of available voices on the FM synth...
     */
} sFMextra;

extern	unsigned char midiFMInstrumentPatches[16 * 128];
extern	unsigned char midiFMDrumsPatches     [16 * 128];

/**************************************************************************
 * 			modFMLoad				[internal]
 */
static int modFMLoad(int dev)
{
    int				i;
    struct sbi_instrument	sbi;

    sbi.device = dev;
    sbi.key = FM_PATCH;

    memset(sbi.operators + 16, 0, 16);
    for (i = 0; i < 128; i++) {
	sbi.channel = i;
	memcpy(sbi.operators, midiFMInstrumentPatches + i * 16, 16);

	if (write(midiSeqFD, (char*)&sbi, sizeof(sbi)) == -1) {
	    WARN("Couldn't write patch for instrument %d, errno %d (%s)!\n", sbi.channel, errno, strerror(errno));
	    return -1;
	}
    }
    for (i = 0; i < 128; i++) {
	sbi.channel = 128 + i;
	memcpy(sbi.operators, midiFMDrumsPatches + i * 16, 16);

	if (write(midiSeqFD, (char*)&sbi, sizeof(sbi)) == -1) {
	    WARN("Couldn't write patch for drum %d, errno %d (%s)!\n", sbi.channel, errno, strerror(errno));
	    return -1;
	}
    }
    return 0;
}

/**************************************************************************
 * 			modFMReset				[internal]
 */
static	void modFMReset(WORD wDevID)
{
    sFMextra*	extra   = (sFMextra*)MidiOutDev[wDevID].lpExtra;
    sVoice* 	voice   = extra->voice;
    sChannel*	channel = extra->channel;
    int		i;

    for (i = 0; i < MidiOutDev[wDevID].caps.wVoices; i++) {
	if (voice[i].status != sVS_UNUSED) {
	    SEQ_STOP_NOTE(wDevID, i, voice[i].note, 64);
	}
	SEQ_KEY_PRESSURE(wDevID, i, 127, 0);
	SEQ_CONTROL(wDevID, i, SEQ_VOLMODE, VOL_METHOD_LINEAR);
	voice[i].note = 0;
	voice[i].channel = -1;
	voice[i].cntMark = 0;
	voice[i].status = sVS_UNUSED;
    }
    for (i = 0; i < 16; i++) {
	channel[i].program = 0;
	channel[i].bender = 8192;
	channel[i].benderRange = 2;
	channel[i].bank = 0;
	channel[i].volume = 127;
	channel[i].balance = 64;
	channel[i].expression = 0;
	channel[i].sustain = 0;
    }
    extra->counter = 0;
    extra->drumSetMask = 1 << 9; /* channel 10 is normally drums, sometimes 16 also */
    SEQ_DUMPBUF();
}

#define		IS_DRUM_CHANNEL(_xtra, _chn)	((_xtra)->drumSetMask & (1 << (_chn)))

/**************************************************************************
 * 				modGetDevCaps			[internal]
 */
static DWORD modGetDevCaps(WORD wDevID, LPMIDIOUTCAPSW lpCaps, DWORD dwSize)
{
    TRACE("(%04X, %p, %08lX);\n", wDevID, lpCaps, dwSize);

    if (wDevID >= MODM_NumDevs)	return MMSYSERR_BADDEVICEID;
    if (lpCaps == NULL) 	return MMSYSERR_INVALPARAM;

    memcpy(lpCaps, &MidiOutDev[wDevID].caps, min(dwSize, sizeof(*lpCaps)));

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 * 			modOpen					[internal]
 */
static DWORD modOpen(WORD wDevID, LPMIDIOPENDESC lpDesc, DWORD dwFlags)
{
    TRACE("(%04X, %p, %08lX);\n", wDevID, lpDesc, dwFlags);
    if (lpDesc == NULL) {
	WARN("Invalid Parameter !\n");
	return MMSYSERR_INVALPARAM;
    }
    if (wDevID >= MODM_NumDevs) {
	TRACE("MAX_MIDIOUTDRV reached !\n");
	return MMSYSERR_BADDEVICEID;
    }
    if (MidiOutDev[wDevID].midiDesc.hMidi != 0) {
	WARN("device already open !\n");
	return MMSYSERR_ALLOCATED;
    }
    if (!MidiOutDev[wDevID].bEnabled) {
	WARN("device disabled !\n");
	return MIDIERR_NODEVICE;
    }
    if ((dwFlags & ~CALLBACK_TYPEMASK) != 0) {
	WARN("bad dwFlags\n");
	return MMSYSERR_INVALFLAG;
    }
    if (!MidiOutDev[wDevID].bEnabled) {
	TRACE("disabled wDevID\n");
	return MMSYSERR_NOTENABLED;
    }

    MidiOutDev[wDevID].lpExtra = 0;

    switch (MidiOutDev[wDevID].caps.wTechnology) {
    case MOD_FMSYNTH:
	{
	    void*	extra;

            extra = HeapAlloc(GetProcessHeap(), 0,
                              sizeof(struct sFMextra) +
                              sizeof(struct sVoice) * (MidiOutDev[wDevID].caps.wVoices - 1));

	    if (extra == 0) {
		WARN("can't alloc extra data !\n");
		return MMSYSERR_NOMEM;
	    }
	    MidiOutDev[wDevID].lpExtra = extra;
	    if (midiOpenSeq() < 0) {
		MidiOutDev[wDevID].lpExtra = 0;
		HeapFree(GetProcessHeap(), 0, extra);
		return MMSYSERR_ERROR;
	    }
	    if (modFMLoad(wDevID) < 0) {
		midiCloseSeq();
		MidiOutDev[wDevID].lpExtra = 0;
		HeapFree(GetProcessHeap(), 0, extra);
		return MMSYSERR_ERROR;
	    }
	    modFMReset(wDevID);
	}
	break;
    case MOD_MIDIPORT:
    case MOD_SYNTH:
	if (midiOpenSeq() < 0) {
	    return MMSYSERR_ALLOCATED;
	}
	break;
    default:
	WARN("Technology not supported (yet) %d !\n",
	     MidiOutDev[wDevID].caps.wTechnology);
	return MMSYSERR_NOTENABLED;
    }

    MidiOutDev[wDevID].wFlags = HIWORD(dwFlags & CALLBACK_TYPEMASK);

    MidiOutDev[wDevID].lpQueueHdr = NULL;
    MidiOutDev[wDevID].dwTotalPlayed = 0;
    MidiOutDev[wDevID].bufsize = 0x3FFF;
    MidiOutDev[wDevID].midiDesc = *lpDesc;

    if (MIDI_NotifyClient(wDevID, MOM_OPEN, 0L, 0L) != MMSYSERR_NOERROR) {
	WARN("can't notify client !\n");
	return MMSYSERR_INVALPARAM;
    }
    TRACE("Successful !\n");
    return MMSYSERR_NOERROR;
}


/**************************************************************************
 * 			modClose				[internal]
 */
static DWORD modClose(WORD wDevID)
{
    int	ret = MMSYSERR_NOERROR;

    TRACE("(%04X);\n", wDevID);

    if (MidiOutDev[wDevID].midiDesc.hMidi == 0) {
	WARN("device not opened !\n");
	return MMSYSERR_ERROR;
    }
    /* FIXME: should test that no pending buffer is still in the queue for
     * playing */

    if (midiSeqFD == -1) {
	WARN("can't close !\n");
	return MMSYSERR_ERROR;
    }

    switch (MidiOutDev[wDevID].caps.wTechnology) {
    case MOD_FMSYNTH:
    case MOD_MIDIPORT:
	midiCloseSeq();
	break;
    default:
	WARN("Technology not supported (yet) %d !\n",
	     MidiOutDev[wDevID].caps.wTechnology);
	return MMSYSERR_NOTENABLED;
    }

    HeapFree(GetProcessHeap(), 0, MidiOutDev[wDevID].lpExtra);
    MidiOutDev[wDevID].lpExtra = 0;

    MidiOutDev[wDevID].bufsize = 0;
    if (MIDI_NotifyClient(wDevID, MOM_CLOSE, 0L, 0L) != MMSYSERR_NOERROR) {
	WARN("can't notify client !\n");
	ret = MMSYSERR_INVALPARAM;
    }
    MidiOutDev[wDevID].midiDesc.hMidi = 0;
    return ret;
}

/**************************************************************************
 * 			modData					[internal]
 */
static DWORD modData(WORD wDevID, DWORD dwParam)
{
    WORD	evt = LOBYTE(LOWORD(dwParam));
    WORD	d1  = HIBYTE(LOWORD(dwParam));
    WORD	d2  = LOBYTE(HIWORD(dwParam));

    TRACE("(%04X, %08lX);\n", wDevID, dwParam);

    if (wDevID >= MODM_NumDevs) return MMSYSERR_BADDEVICEID;
    if (!MidiOutDev[wDevID].bEnabled) return MIDIERR_NODEVICE;

    if (midiSeqFD == -1) {
	WARN("can't play !\n");
	return MIDIERR_NODEVICE;
    }
    switch (MidiOutDev[wDevID].caps.wTechnology) {
    case MOD_FMSYNTH:
	/* FIXME:
	 *	- chorus depth controller is not used
	 */
	{
	    sFMextra*	extra   = (sFMextra*)MidiOutDev[wDevID].lpExtra;
	    sVoice* 	voice   = extra->voice;
	    sChannel*	channel = extra->channel;
	    int		chn = (evt & 0x0F);
	    int		i, nv;

	    switch (evt & 0xF0) {
	    case MIDI_NOTEOFF:
		for (i = 0; i < MidiOutDev[wDevID].caps.wVoices; i++) {
				/* don't stop sustained notes */
		    if (voice[i].status == sVS_PLAYING && voice[i].channel == chn && voice[i].note == d1) {
			voice[i].status = sVS_UNUSED;
			SEQ_STOP_NOTE(wDevID, i, d1, d2);
		    }
		}
		break;
	    case MIDI_NOTEON:
		if (d2 == 0) { /* note off if velocity == 0 */
		    for (i = 0; i < MidiOutDev[wDevID].caps.wVoices; i++) {
			/* don't stop sustained notes */
			if (voice[i].status == sVS_PLAYING && voice[i].channel == chn && voice[i].note == d1) {
			    voice[i].status = sVS_UNUSED;
			    SEQ_STOP_NOTE(wDevID, i, d1, 64);
			}
		    }
		    break;
		}
		/* finding out in this order :
		 *	- an empty voice
		 *	- if replaying the same note on the same channel
		 *	- the older voice (LRU)
		 */
		for (i = nv = 0; i < MidiOutDev[wDevID].caps.wVoices; i++) {
		    if (voice[i].status == sVS_UNUSED ||
			(voice[i].note == d1 && voice[i].channel == chn)) {
			nv = i;
			break;
		    }
		    if (voice[i].cntMark < voice[0].cntMark) {
			nv = i;
		    }
		}
		TRACE(
		      "playing on voice=%d, pgm=%d, pan=0x%02X, vol=0x%02X, "
		      "bender=0x%02X, note=0x%02X, vel=0x%02X\n",
		      nv, channel[chn].program,
		      channel[chn].balance,
		      channel[chn].volume,
		      channel[chn].bender, d1, d2);

		SEQ_SET_PATCH(wDevID, nv, IS_DRUM_CHANNEL(extra, chn) ?
			      (128 + d1) : channel[chn].program);
		SEQ_BENDER_RANGE(wDevID, nv, channel[chn].benderRange * 100);
		SEQ_BENDER(wDevID, nv, channel[chn].bender);
		SEQ_CONTROL(wDevID, nv, CTL_PAN, channel[chn].balance);
		SEQ_CONTROL(wDevID, nv, CTL_EXPRESSION, channel[chn].expression);
#if 0
		/* FIXME: does not really seem to work on my SB card and
		 * screws everything up... so lay it down
		 */
		SEQ_CONTROL(wDevID, nv, CTL_MAIN_VOLUME, channel[chn].volume);
#endif
		SEQ_START_NOTE(wDevID, nv, d1, d2);
		voice[nv].status = channel[chn].sustain ? sVS_SUSTAINED : sVS_PLAYING;
		voice[nv].note = d1;
		voice[nv].channel = chn;
		voice[nv].cntMark = extra->counter++;
		break;
	    case MIDI_KEY_PRESSURE:
		for (i = 0; i < MidiOutDev[wDevID].caps.wVoices; i++) {
		    if (voice[i].status != sVS_UNUSED && voice[i].channel == chn && voice[i].note == d1) {
			SEQ_KEY_PRESSURE(wDevID, i, d1, d2);
		    }
		}
		break;
	    case MIDI_CTL_CHANGE:
		switch (d1) {
		case CTL_BANK_SELECT:	channel[chn].bank = d2;		break;
		case CTL_MAIN_VOLUME:	channel[chn].volume = d2;	break;
		case CTL_PAN:		channel[chn].balance = d2;	break;
		case CTL_EXPRESSION:	channel[chn].expression = d2;	break;
		case CTL_SUSTAIN:	channel[chn].sustain = d2;
		    if (d2) {
			for (i = 0; i < MidiOutDev[wDevID].caps.wVoices; i++) {
			    if (voice[i].status == sVS_PLAYING && voice[i].channel == chn) {
				voice[i].status = sVS_SUSTAINED;
			    }
			}
		    } else {
			for (i = 0; i < MidiOutDev[wDevID].caps.wVoices; i++) {
			    if (voice[i].status == sVS_SUSTAINED && voice[i].channel == chn) {
				voice[i].status = sVS_UNUSED;
				SEQ_STOP_NOTE(wDevID, i, voice[i].note, 64);
			    }
			}
		    }
		    break;
		case CTL_NONREG_PARM_NUM_LSB:	channel[chn].nrgPmtLSB = d2;	break;
		case CTL_NONREG_PARM_NUM_MSB:	channel[chn].nrgPmtMSB = d2;	break;
		case CTL_REGIST_PARM_NUM_LSB:	channel[chn].regPmtLSB = d2;	break;
		case CTL_REGIST_PARM_NUM_MSB:	channel[chn].regPmtMSB = d2;	break;
		case CTL_DATA_ENTRY:
		    switch ((channel[chn].regPmtMSB << 8) | channel[chn].regPmtLSB) {
		    case 0x0000:
			if (channel[chn].benderRange != d2) {
			    channel[chn].benderRange = d2;
			    for (i = 0; i < MidiOutDev[wDevID].caps.wVoices; i++) {
				if (voice[i].channel == chn) {
				    SEQ_BENDER_RANGE(wDevID, i, channel[chn].benderRange);
				}
			    }
			}
			break;

		    case 0x7F7F:
			channel[chn].benderRange = 2;
			for (i = 0; i < MidiOutDev[wDevID].caps.wVoices; i++) {
			    if (voice[i].channel == chn) {
				SEQ_BENDER_RANGE(wDevID, i, channel[chn].benderRange);
			    }
			}
			break;
		    default:
			TRACE("Data entry: regPmt=0x%02x%02x, nrgPmt=0x%02x%02x with %x\n",
			      channel[chn].regPmtMSB, channel[chn].regPmtLSB,
			      channel[chn].nrgPmtMSB, channel[chn].nrgPmtLSB,
			      d2);
			break;
		    }
		    break;

		case 0x78: /* all sounds off */
		    /* FIXME: I don't know if I have to take care of the channel
		     * for this control ?
		     */
		    for (i = 0; i < MidiOutDev[wDevID].caps.wVoices; i++) {
			if (voice[i].status != sVS_UNUSED && voice[i].channel == chn) {
			    voice[i].status = sVS_UNUSED;
			    SEQ_STOP_NOTE(wDevID, i, voice[i].note, 64);
			}
		    }
		    break;
		case 0x7B: /* all notes off */
		    /* FIXME: I don't know if I have to take care of the channel
		     * for this control ?
		     */
		    for (i = 0; i < MidiOutDev[wDevID].caps.wVoices; i++) {
			if (voice[i].status == sVS_PLAYING && voice[i].channel == chn) {
			    voice[i].status = sVS_UNUSED;
			    SEQ_STOP_NOTE(wDevID, i, voice[i].note, 64);
			}
		    }
		    break;
		default:
		    TRACE("Dropping MIDI control event 0x%02x(%02x) on channel %d\n",
			  d1, d2, chn);
		    break;
		}
		break;
	    case MIDI_PGM_CHANGE:
		channel[chn].program = d1;
		break;
	    case MIDI_CHN_PRESSURE:
		for (i = 0; i < MidiOutDev[wDevID].caps.wVoices; i++) {
		    if (voice[i].status != sVS_UNUSED && voice[i].channel == chn) {
			SEQ_KEY_PRESSURE(wDevID, i, voice[i].note, d1);
		    }
		}
		break;
	    case MIDI_PITCH_BEND:
		channel[chn].bender = (d2 << 7) + d1;
		for (i = 0; i < MidiOutDev[wDevID].caps.wVoices; i++) {
		    if (voice[i].channel == chn) {
			SEQ_BENDER(wDevID, i, channel[chn].bender);
		    }
		}
		break;
	    case MIDI_SYSTEM_PREFIX:
		switch (evt & 0x0F) {
		case 0x0F: 	/* Reset */
		    modFMReset(wDevID);
		    break;
		default:
		    WARN("Unsupported (yet) system event %02x\n", evt & 0x0F);
		}
		break;
	    default:
		WARN("Internal error, shouldn't happen (event=%08x)\n", evt & 0xF0);
		return MMSYSERR_NOTENABLED;
	    }
	}
	break;
    case MOD_MIDIPORT:
	{
	    int	dev = wDevID - MODM_NumFMSynthDevs;
	    if (dev < 0) {
		WARN("Internal error on devID (%u) !\n", wDevID);
		return MIDIERR_NODEVICE;
	    }

	    switch (evt & 0xF0) {
	    case MIDI_NOTEOFF:
	    case MIDI_NOTEON:
	    case MIDI_KEY_PRESSURE:
	    case MIDI_CTL_CHANGE:
	    case MIDI_PITCH_BEND:
		SEQ_MIDIOUT(dev, evt);
		SEQ_MIDIOUT(dev, d1);
		SEQ_MIDIOUT(dev, d2);
		break;
	    case MIDI_PGM_CHANGE:
	    case MIDI_CHN_PRESSURE:
		SEQ_MIDIOUT(dev, evt);
		SEQ_MIDIOUT(dev, d1);
		break;
	    case MIDI_SYSTEM_PREFIX:
		switch (evt & 0x0F) {
		case 0x00:	/* System Exclusive, don't do it on modData,
				 * should require modLongData*/
		case 0x01:	/* Undefined */
		case 0x04:	/* Undefined. */
		case 0x05:	/* Undefined. */
		case 0x07:	/* End of Exclusive. */
		case 0x09:	/* Undefined. */
		case 0x0D:	/* Undefined. */
		    break;
		case 0x06:	/* Tune Request */
		case 0x08:	/* Timing Clock. */
		case 0x0A:	/* Start. */
		case 0x0B:	/* Continue */
		case 0x0C:	/* Stop */
		case 0x0E: 	/* Active Sensing. */
		    SEQ_MIDIOUT(dev, evt);
		    break;
		case 0x0F: 	/* Reset */
				/* SEQ_MIDIOUT(dev, evt);
				   this other way may be better */
		    SEQ_MIDIOUT(dev, MIDI_SYSTEM_PREFIX);
		    SEQ_MIDIOUT(dev, 0x7e);
		    SEQ_MIDIOUT(dev, 0x7f);
		    SEQ_MIDIOUT(dev, 0x09);
		    SEQ_MIDIOUT(dev, 0x01);
		    SEQ_MIDIOUT(dev, 0xf7);
		    break;
		case 0x03:	/* Song Select. */
		    SEQ_MIDIOUT(dev, evt);
		    SEQ_MIDIOUT(dev, d1);
		case 0x02:	/* Song Position Pointer. */
		    SEQ_MIDIOUT(dev, evt);
		    SEQ_MIDIOUT(dev, d1);
		    SEQ_MIDIOUT(dev, d2);
		}
		break;
	    }
	}
	break;
    default:
	WARN("Technology not supported (yet) %d !\n",
	     MidiOutDev[wDevID].caps.wTechnology);
	return MMSYSERR_NOTENABLED;
    }

    SEQ_DUMPBUF();

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 *		modLongData					[internal]
 */
static DWORD modLongData(WORD wDevID, LPMIDIHDR lpMidiHdr, DWORD dwSize)
{
    int		count;
    LPBYTE	lpData;

    TRACE("(%04X, %p, %08lX);\n", wDevID, lpMidiHdr, dwSize);

    /* Note: MS doc does not say much about the dwBytesRecorded member of the MIDIHDR structure
     * but it seems to be used only for midi input.
     * Taking a look at the WAVEHDR structure (which is quite similar) confirms this assumption.
     */
    
    if (wDevID >= MODM_NumDevs) return MMSYSERR_BADDEVICEID;
    if (!MidiOutDev[wDevID].bEnabled) return MIDIERR_NODEVICE;

    if (midiSeqFD == -1) {
	WARN("can't play !\n");
	return MIDIERR_NODEVICE;
    }

    lpData = lpMidiHdr->lpData;

    if (lpData == NULL)
	return MIDIERR_UNPREPARED;
    if (!(lpMidiHdr->dwFlags & MHDR_PREPARED))
	return MIDIERR_UNPREPARED;
    if (lpMidiHdr->dwFlags & MHDR_INQUEUE)
	return MIDIERR_STILLPLAYING;
    lpMidiHdr->dwFlags &= ~MHDR_DONE;
    lpMidiHdr->dwFlags |= MHDR_INQUEUE;

    /* FIXME: MS doc is not 100% clear. Will lpData only contain system exclusive
     * data, or can it also contain raw MIDI data, to be split up and sent to
     * modShortData() ?
     * If the latest is true, then the following WARNing will fire up
     */
    if (lpData[0] != 0xF0 || lpData[lpMidiHdr->dwBufferLength - 1] != 0xF7) {
	WARN("Alledged system exclusive buffer is not correct\n\tPlease report with MIDI file\n");
    }

    TRACE("dwBufferLength=%lu !\n", lpMidiHdr->dwBufferLength);
    TRACE("                 %02X %02X %02X ... %02X %02X %02X\n",
	  lpData[0], lpData[1], lpData[2], lpData[lpMidiHdr->dwBufferLength-3],
	  lpData[lpMidiHdr->dwBufferLength-2], lpData[lpMidiHdr->dwBufferLength-1]);

    switch (MidiOutDev[wDevID].caps.wTechnology) {
    case MOD_FMSYNTH:
	/* FIXME: I don't think there is much to do here */
	break;
    case MOD_MIDIPORT:
	if (lpData[0] != 0xF0) {
	    /* Send end of System Exclusive */
	    SEQ_MIDIOUT(wDevID - MODM_NumFMSynthDevs, 0xF0);
	    WARN("Adding missing 0xF0 marker at the beginning of "
		 "system exclusive byte stream\n");
	}
	for (count = 0; count < lpMidiHdr->dwBufferLength; count++) {
	    SEQ_MIDIOUT(wDevID - MODM_NumFMSynthDevs, lpData[count]);
	}
	if (lpData[count - 1] != 0xF7) {
	    /* Send end of System Exclusive */
	    SEQ_MIDIOUT(wDevID - MODM_NumFMSynthDevs, 0xF7);
	    WARN("Adding missing 0xF7 marker at the end of "
		 "system exclusive byte stream\n");
	}
	SEQ_DUMPBUF();
	break;
    default:
	WARN("Technology not supported (yet) %d !\n",
	     MidiOutDev[wDevID].caps.wTechnology);
	return MMSYSERR_NOTENABLED;
    }

    lpMidiHdr->dwFlags &= ~MHDR_INQUEUE;
    lpMidiHdr->dwFlags |= MHDR_DONE;
    if (MIDI_NotifyClient(wDevID, MOM_DONE, (DWORD)lpMidiHdr, 0L) != MMSYSERR_NOERROR) {
	WARN("can't notify client !\n");
	return MMSYSERR_INVALPARAM;
    }
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 * 			modPrepare				[internal]
 */
static DWORD modPrepare(WORD wDevID, LPMIDIHDR lpMidiHdr, DWORD dwSize)
{
    TRACE("(%04X, %p, %08lX);\n", wDevID, lpMidiHdr, dwSize);

    if (midiSeqFD == -1) {
	WARN("can't prepare !\n");
	return MMSYSERR_NOTENABLED;
    }

    /* MS doc says that dwFlags must be set to zero, but (kinda funny) MS mciseq drivers
     * asks to prepare MIDIHDR which dwFlags != 0.
     * So at least check for the inqueue flag
     */
    if (dwSize < sizeof(MIDIHDR) || lpMidiHdr == 0 ||
	lpMidiHdr->lpData == 0 || (lpMidiHdr->dwFlags & MHDR_INQUEUE) != 0 ||
	lpMidiHdr->dwBufferLength >= 0x10000ul) {
	WARN("%p %p %08lx %d/%ld\n", lpMidiHdr, lpMidiHdr->lpData,
	           lpMidiHdr->dwFlags, sizeof(MIDIHDR), dwSize);
	return MMSYSERR_INVALPARAM;
    }

    lpMidiHdr->lpNext = 0;
    lpMidiHdr->dwFlags |= MHDR_PREPARED;
    lpMidiHdr->dwFlags &= ~MHDR_DONE;
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 * 				modUnprepare			[internal]
 */
static DWORD modUnprepare(WORD wDevID, LPMIDIHDR lpMidiHdr, DWORD dwSize)
{
    TRACE("(%04X, %p, %08lX);\n", wDevID, lpMidiHdr, dwSize);

    if (midiSeqFD == -1) {
	WARN("can't unprepare !\n");
	return MMSYSERR_NOTENABLED;
    }

    if (dwSize < sizeof(MIDIHDR) || lpMidiHdr == 0)
	return MMSYSERR_INVALPARAM;
    if (lpMidiHdr->dwFlags & MHDR_INQUEUE)
	return MIDIERR_STILLPLAYING;
    lpMidiHdr->dwFlags &= ~MHDR_PREPARED;
    return MMSYSERR_NOERROR;
}

/**************************************************************************
 * 			modReset				[internal]
 */
static DWORD modReset(WORD wDevID)
{
    unsigned chn;

    TRACE("(%04X);\n", wDevID);

    if (wDevID >= MODM_NumDevs) return MMSYSERR_BADDEVICEID;
    if (!MidiOutDev[wDevID].bEnabled) return MIDIERR_NODEVICE;

    /* stop all notes */
    /* FIXME: check if 0x78B0 is channel dependent or not. I coded it so that
     * it's channel dependent...
     */
    for (chn = 0; chn < 16; chn++) {
	/* turn off every note */
	modData(wDevID, 0x7800 | MIDI_CTL_CHANGE | chn);
	/* remove sustain on all channels */
	modData(wDevID, (CTL_SUSTAIN << 8) | MIDI_CTL_CHANGE | chn);
    }
    /* FIXME: the LongData buffers must also be returned to the app */
    return MMSYSERR_NOERROR;
}

#endif /* HAVE_OSS_MIDI */

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

/**************************************************************************
 * 			midMessage (WINEOSS.4)
 */
DWORD WINAPI OSS_midMessage(UINT wDevID, UINT wMsg, DWORD dwUser,
			    DWORD dwParam1, DWORD dwParam2)
{
    TRACE("(%04X, %04X, %08lX, %08lX, %08lX);\n",
	  wDevID, wMsg, dwUser, dwParam1, dwParam2);
    switch (wMsg) {
#ifdef HAVE_OSS_MIDI
    case DRVM_INIT:
    case DRVM_EXIT:
    case DRVM_ENABLE:
    case DRVM_DISABLE:
	/* FIXME: Pretend this is supported */
	return 0;
    case MIDM_OPEN:
	return midOpen(wDevID, (LPMIDIOPENDESC)dwParam1, dwParam2);
    case MIDM_CLOSE:
	return midClose(wDevID);
    case MIDM_ADDBUFFER:
	return midAddBuffer(wDevID, (LPMIDIHDR)dwParam1, dwParam2);
    case MIDM_PREPARE:
	return midPrepare(wDevID, (LPMIDIHDR)dwParam1, dwParam2);
    case MIDM_UNPREPARE:
	return midUnprepare(wDevID, (LPMIDIHDR)dwParam1, dwParam2);
    case MIDM_GETDEVCAPS:
	return midGetDevCaps(wDevID, (LPMIDIINCAPSW)dwParam1,dwParam2);
    case MIDM_GETNUMDEVS:
	return MIDM_NumDevs;
    case MIDM_RESET:
	return midReset(wDevID);
    case MIDM_START:
	return midStart(wDevID);
    case MIDM_STOP:
	return midStop(wDevID);
#endif
    default:
	TRACE("Unsupported message\n");
    }
    return MMSYSERR_NOTSUPPORTED;
}

/**************************************************************************
 * 				modMessage (WINEOSS.5)
 */
DWORD WINAPI OSS_modMessage(UINT wDevID, UINT wMsg, DWORD dwUser,
			    DWORD dwParam1, DWORD dwParam2)
{
    TRACE("(%04X, %04X, %08lX, %08lX, %08lX);\n",
	  wDevID, wMsg, dwUser, dwParam1, dwParam2);

    switch (wMsg) {
#ifdef HAVE_OSS_MIDI
    case DRVM_INIT:
    case DRVM_EXIT:
    case DRVM_ENABLE:
    case DRVM_DISABLE:
	/* FIXME: Pretend this is supported */
	return 0;
    case MODM_OPEN:
	return modOpen(wDevID, (LPMIDIOPENDESC)dwParam1, dwParam2);
    case MODM_CLOSE:
	return modClose(wDevID);
    case MODM_DATA:
	return modData(wDevID, dwParam1);
    case MODM_LONGDATA:
	return modLongData(wDevID, (LPMIDIHDR)dwParam1, dwParam2);
    case MODM_PREPARE:
	return modPrepare(wDevID, (LPMIDIHDR)dwParam1, dwParam2);
    case MODM_UNPREPARE:
	return modUnprepare(wDevID, (LPMIDIHDR)dwParam1, dwParam2);
    case MODM_GETDEVCAPS:
	return modGetDevCaps(wDevID, (LPMIDIOUTCAPSW)dwParam1, dwParam2);
    case MODM_GETNUMDEVS:
	return MODM_NumDevs;
    case MODM_GETVOLUME:
	return 0;
    case MODM_SETVOLUME:
	return 0;
    case MODM_RESET:
	return modReset(wDevID);
#endif
    default:
	TRACE("Unsupported message\n");
    }
    return MMSYSERR_NOTSUPPORTED;
}

/*-----------------------------------------------------------------------*/