midi.c

Wine-20031016

    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, LPMIDIOUTCAPSA 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;
    }

    if (MidiOutDev[wDevID].lpExtra != 0) {
        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++) {