}static VOID OnToneAndSlide(LPTRACK lpTrack){    if (!Player.nFrame) {        OnVolumeSlide(lpTrack);        lpTrack->bControl &= ~(AUDIO_CTRL_PITCH | AUDIO_CTRL_KEYON);    }    else {        OnTonePorta(lpTrack);        OnVolumeSlide(lpTrack);    }}static VOID OnVibratoAndSlide(LPTRACK lpTrack){    if (!Player.nFrame) {        OnVolumeSlide(lpTrack);    }    else {        OnVibrato(lpTrack);        OnVolumeSlide(lpTrack);    }}static VOID OnTremolo(LPTRACK lpTrack){    int nDelta, nFrame;    if (!Player.nFrame) {        if (LOPARAM(lpTrack->bParams)) {            lpTrack->nTremoloDepth = LOPARAM(lpTrack->bParams);        }        if (HIPARAM(lpTrack->bParams)) {            lpTrack->nTremoloRate = HIPARAM(lpTrack->bParams) << 2;        }    }    else {        nFrame = (lpTrack->nTremoloFrame >> 2) & 0x1F;        switch (lpTrack->bWaveCtrl & 0x30) {        case 0x00:            nDelta = aSineTable[nFrame];            break;        case 0x10:            nDelta = nFrame << 3;            if (lpTrack->nTremoloFrame & 0x80)                nDelta ^= 0xFF;            break;        case 0x20:            nDelta = 0xFF;            break;        default:            /* TODO: random waveform not implemented */            nDelta = 0x00;            break;        }        nDelta = (nDelta * lpTrack->nTremoloDepth) >> 6;        lpTrack->nOutVolume = lpTrack->nVolume;        if (lpTrack->nTremoloFrame & 0x80) {            lpTrack->nOutVolume -= nDelta;            if (lpTrack->nOutVolume < AUDIO_MIN_VOLUME)                lpTrack->nOutVolume = AUDIO_MIN_VOLUME;        }        else {            lpTrack->nOutVolume += nDelta;            if (lpTrack->nOutVolume > AUDIO_MAX_VOLUME)                lpTrack->nOutVolume = AUDIO_MAX_VOLUME;        }        lpTrack->bControl |= AUDIO_CTRL_VOLUME;        lpTrack->nTremoloFrame += lpTrack->nTremoloRate;    }}static VOID OnSetPanning(LPTRACK lpTrack){    if (!Player.nFrame) {        lpTrack->nPanning = lpTrack->bParams;        lpTrack->bControl |= AUDIO_CTRL_PANNING;    }}static VOID OnSampleOffset(LPTRACK lpTrack){    if (!Player.nFrame) {        lpTrack->dwSampleOffset = (LONG) lpTrack->bParams << 8;        lpTrack->bControl |= AUDIO_CTRL_KEYON | AUDIO_CTRL_TOUCH;    }}static VOID OnJumpPosition(LPTRACK lpTrack){    if (!Player.nFrame) {        if (lpTrack->bParams < Player.lpModule->nOrders) {            Player.nJumpOrder = lpTrack->bParams;            Player.wControl |= AUDIO_PLAYER_JUMP;        }    }}static VOID OnSetVolume(LPTRACK lpTrack){    if (!Player.nFrame) {        if ((lpTrack->nVolume = lpTrack->bParams) > AUDIO_MAX_VOLUME)            lpTrack->nVolume = AUDIO_MAX_VOLUME;        lpTrack->nOutVolume = lpTrack->nVolume;        lpTrack->bControl |= AUDIO_CTRL_VOLUME;    }}static VOID OnPatternBreak(LPTRACK lpTrack){    if (!Player.nFrame) {        Player.nJumpRow = 10 * HIPARAM(lpTrack->bParams) +            LOPARAM(lpTrack->bParams);        Player.wControl |= AUDIO_PLAYER_BREAK;    }}static VOID OnExtraCommand(LPTRACK lpTrack){    switch (HIPARAM(lpTrack->bParams)) {    case 0x0:        /* TODO: filter control not implemented */        break;    case 0x1:        /* fine portamento up */        if (!Player.nFrame) {            if (LOPARAM(lpTrack->bParams))                lpTrack->nFinePortaUp = LOPARAM(lpTrack->bParams) << 2;            lpTrack->nPeriod -= lpTrack->nFinePortaUp;            if (lpTrack->nPeriod < AUDIO_MIN_PERIOD)                lpTrack->nPeriod = AUDIO_MIN_PERIOD;            lpTrack->nOutPeriod = lpTrack->nPeriod;            lpTrack->bControl |= AUDIO_CTRL_PITCH;        }        break;    case 0x2:        /* fine portamento down */        if (!Player.nFrame) {            if (LOPARAM(lpTrack->bParams))                lpTrack->nFinePortaDown = LOPARAM(lpTrack->bParams) << 2;            lpTrack->nPeriod += lpTrack->nFinePortaDown;            if (lpTrack->nPeriod > AUDIO_MAX_PERIOD)                lpTrack->nPeriod = AUDIO_MAX_PERIOD;            lpTrack->nOutPeriod = lpTrack->nPeriod;            lpTrack->bControl |= AUDIO_CTRL_PITCH;        }        break;    case 0x3:        /* set glissando control */        if (!Player.nFrame) {            lpTrack->bGlissCtrl = LOPARAM(lpTrack->bParams);        }        break;    case 0x4:        /* set vibrato wave control */        if (!Player.nFrame) {            lpTrack->bWaveCtrl &= 0xF0;            lpTrack->bWaveCtrl |= LOPARAM(lpTrack->bParams);        }        break;    case 0x5:        /* set finetune */        if (!Player.nFrame) {            lpTrack->nFinetune = ((int) LOPARAM(lpTrack->bParams) << 4) - 0x80;            lpTrack->nOutPeriod = GetPeriodValue(lpTrack->nNote,						 lpTrack->nRelativeNote, lpTrack->nFinetune);            lpTrack->bControl |= AUDIO_CTRL_PITCH;        }        break;    case 0x6:        /* set/start pattern loop */        if (!Player.nFrame) {            if (LOPARAM(lpTrack->bParams)) {                if (lpTrack->nPatternLoop)                    lpTrack->nPatternLoop--;                else                    lpTrack->nPatternLoop = LOPARAM(lpTrack->bParams);                if (lpTrack->nPatternLoop) {                    Player.nJumpRow = lpTrack->nPatternRow;                    Player.nJumpOrder = Player.nOrder;                    Player.wControl |= AUDIO_PLAYER_JUMP;                }            }            else {                lpTrack->nPatternRow = Player.nRow;            }        }        break;    case 0x7:        /* set tremolo wave control */        if (!Player.nFrame) {            lpTrack->bWaveCtrl &= 0x0F;            lpTrack->bWaveCtrl |= LOPARAM(lpTrack->bParams) << 4;        }        break;    case 0x8:        /* set stereo panning control */        if (!Player.nFrame) {            lpTrack->nPanning = LOPARAM(lpTrack->bParams) << 4;            lpTrack->bControl |= AUDIO_CTRL_PANNING;        }        break;    case 0x9:        /* retrig note */        if (!Player.nFrame) {            RetrigNote(lpTrack);        }        else if (LOPARAM(lpTrack->bParams)) {            if (!(Player.nFrame % LOPARAM(lpTrack->bParams))) {                RetrigNote(lpTrack);            }        }        break;    case 0xA:        /* fine volume slide up */        if (!Player.nFrame) {            lpTrack->nVolume += LOPARAM(lpTrack->bParams);            if (lpTrack->nVolume > AUDIO_MAX_VOLUME)                lpTrack->nVolume = AUDIO_MAX_VOLUME;            lpTrack->nOutVolume = lpTrack->nVolume;            lpTrack->bControl |= AUDIO_CTRL_VOLUME;        }        break;    case 0xB:        /* fine volume slide down */        if (!Player.nFrame) {            lpTrack->nVolume -= LOPARAM(lpTrack->bParams);            if (lpTrack->nVolume < AUDIO_MIN_VOLUME)                lpTrack->nVolume = AUDIO_MIN_VOLUME;            lpTrack->nOutVolume = lpTrack->nVolume;            lpTrack->bControl |= AUDIO_CTRL_VOLUME;        }        break;    case 0xC:        /* note cut */        if (Player.nFrame == LOPARAM(lpTrack->bParams)) {            lpTrack->nVolume = lpTrack->nOutVolume = 0;            lpTrack->bControl |= AUDIO_CTRL_VOLUME;        }        break;    case 0xD:        /* note delay */        lpTrack->bControl &= AUDIO_CTRL_KEYOFF;        if (Player.nFrame == LOPARAM(lpTrack->bParams)) {            RetrigNote(lpTrack);            lpTrack->bControl |= (AUDIO_CTRL_VOLUME | AUDIO_CTRL_PANNING);        }        break;    case 0xE:        /* pattern delay */        if (!Player.nFrame) {            if (!(Player.wControl & AUDIO_PLAYER_DELAY)) {                Player.nPatternDelay = LOPARAM(lpTrack->bParams) + 1;                Player.wControl |= AUDIO_PLAYER_DELAY;            }        }        break;    case 0xF:        /* TODO: funk it! not implemented */        break;    }}static VOID OnSetSpeed(LPTRACK lpTrack){    if (!Player.nFrame) {        if (lpTrack->bParams >= 0x20) {            Player.nBPM = lpTrack->bParams;            Player.wControl |= AUDIO_PLAYER_BPM;        }        else if (lpTrack->bParams >= 0x01) {            Player.nTempo = lpTrack->bParams;        }    }}static VOID OnSetGlobalVolume(LPTRACK lpTrack){    if (!Player.nFrame) {        if ((Player.nVolume = lpTrack->bParams) > AUDIO_MAX_VOLUME)            Player.nVolume = AUDIO_MAX_VOLUME;        Player.wControl |= AUDIO_PLAYER_VOLUME;    }}static VOID OnGlobalVolumeSlide(LPTRACK lpTrack){    if (!Player.nFrame) {        if (lpTrack->bParams != 0x00) {            Player.nVolumeRate = lpTrack->bParams;        }    }    else {        if (HIPARAM(Player.nVolumeRate)) {            Player.nVolume += HIPARAM(Player.nVolumeRate);            if (Player.nVolume > AUDIO_MAX_VOLUME)                Player.nVolume = AUDIO_MAX_VOLUME;        }        else {            Player.nVolume -= LOPARAM(Player.nVolumeRate);            if (Player.nVolume < AUDIO_MIN_VOLUME)                Player.nVolume = AUDIO_MIN_VOLUME;        }        Player.wControl |= AUDIO_PLAYER_VOLUME;    }}static VOID OnKeyOff(LPTRACK lpTrack){    if (Player.nFrame == lpTrack->bParams) {        StopNote(lpTrack);    }}static VOID OnSetEnvelope(LPTRACK lpTrack){    /* TODO: set envelope position not implemented */    if (lpTrack != NULL) {    }}static VOID OnPanningSlide(LPTRACK lpTrack){    if (!Player.nFrame) {        if (lpTrack->bParams != 0x00) {            lpTrack->bPanningSlide = lpTrack->bParams;        }    }    else {        if (HIPARAM(lpTrack->bPanningSlide)) {            lpTrack->nPanning += HIPARAM(lpTrack->bPanningSlide);            if (lpTrack->nPanning > AUDIO_MAX_PANNING)                lpTrack->nPanning = AUDIO_MAX_PANNING;        }        else {            lpTrack->nPanning -= LOPARAM(lpTrack->bPanningSlide);            if (lpTrack->nPanning < AUDIO_MIN_PANNING)                lpTrack->nPanning = AUDIO_MIN_PANNING;        }        lpTrack->bControl |= AUDIO_CTRL_PANNING;    }}static VOID OnMultiRetrig(LPTRACK lpTrack){    if (!Player.nFrame) {        if (HIPARAM(lpTrack->bParams))            lpTrack->nRetrigType = HIPARAM(lpTrack->bParams);        if (LOPARAM(lpTrack->bParams))            lpTrack->nRetrigInterval = LOPARAM(lpTrack->bParams);    }    else if (++lpTrack->nRetrigFrame >= lpTrack->nRetrigInterval) {        lpTrack->nRetrigFrame = 0;        lpTrack->nVolume += aRetrigTable[lpTrack->nRetrigType];        lpTrack->nVolume *= aRetrigTable[lpTrack->nRetrigType + 16];        lpTrack->nVolume >>= 4;        lpTrack->nVolume = CLIP(lpTrack->nVolume,				AUDIO_MIN_VOLUME, AUDIO_MAX_VOLUME);        if (lpTrack->nVolumeCmd >= 0x10 && lpTrack->nVolumeCmd <= 0x50) {            lpTrack->nVolume = lpTrack->nVolumeCmd - 0x10;            lpTrack->bControl |= AUDIO_CTRL_VOLUME;        }        if (lpTrack->nVolumeCmd >= 0xC0 && lpTrack->nVolumeCmd <= 0xCF) {            lpTrack->nPanning = LOPARAM(lpTrack->nVolumeCmd) << 4;            lpTrack->bControl |= AUDIO_CTRL_PANNING;        }        lpTrack->nOutVolume = lpTrack->nVolume;        lpTrack->bControl |= AUDIO_CTRL_VOLUME;        PlayNote(lpTrack);    }}static VOID OnTremor(LPTRACK lpTrack){    if (!Player.nFrame) {        if (lpTrack->bParams) {            lpTrack->bTremorParms = lpTrack->bParams;        }    }    if (!lpTrack->nTremorFrame--) {        lpTrack->nTremorFrame = lpTrack->bTremorOnOff ?            LOPARAM(lpTrack->bTremorParms) :            HIPARAM(lpTrack->bTremorParms);        lpTrack->bTremorOnOff = !lpTrack->bTremorOnOff;    }    lpTrack->nOutVolume = lpTrack->bTremorOnOff ? lpTrack->nVolume : 0x00;    lpTrack->bControl |= AUDIO_CTRL_VOLUME;}static VOID OnExtraFinePorta(LPTRACK lpTrack){    if (!Player.nFrame) {        if (HIPARAM(lpTrack->bParams) == 0x1) {            if (LOPARAM(lpTrack->bParams))                lpTrack->nExtraPortaUp = LOPARAM(lpTrack->bParams);            lpTrack->nPeriod -= lpTrack->nExtraPortaUp;            if (lpTrack->nPeriod < AUDIO_MIN_PERIOD)                lpTrack->nPeriod = AUDIO_MIN_PERIOD;            lpTrack->nOutPeriod = lpTrack->nPeriod;            lpTrack->bControl |= AUDIO_CTRL_PITCH;        }        else if (HIPARAM(lpTrack->bParams) == 0x2) {            if (LOPARAM(lpTrack->bParams))                lpTrack->nExtraPortaDown = LOPARAM(lpTrack->bParams);            lpTrack->nPeriod += lpTrack->nExtraPortaDown;            if (lpTrack->nPeriod > AUDIO_MAX_PERIOD)                lpTrack->nPeriod = AUDIO_MAX_PERIOD;            lpTrack->nOutPeriod = lpTrack->nPeriod;            lpTrack->bControl |= AUDIO_CTRL_PITCH;        }    }}