bool mi::Work(float *pout, int numsamples, int const mode)
{
    CSubTickInfo const *psti = pCB->GetSubTickInfo();
    if (psti != NULL && psti->PosInSubTick == 0 && pPlayingPattern != NULL)
    {
        int t = patternPos * (PIANOROLL_TPB / 4) + psti->CurrentSubTick * (PIANOROLL_TPB / 4) / psti->SubTicksPerTick;
        int tn = t + (PIANOROLL_TPB / 4) / psti->SubTicksPerTick;

        //if (pEditorPattern == pPlayingPattern)
            //nd.PlayPos = t;

        if (pPlayingPattern->tracks.size() > 0)
        {
            CMachineTrack &mt = *pPlayingPattern->tracks[0].get();

            vector<MTEvent> e;

            for (MapIntToMTEvent::iterator i = playingNotes.lower_bound(pair<int, int>(t, 0)); i != playingNotes.end() && (*i).first < pair<int, int>(tn, 0); i++)
                pCB->SendMidiNote(TargetMac, 0, (*i).second.D1, 0);

            ::EnterCriticalSection(&nd.PatternCS);

            for (MapIntToMTEvent::iterator i = playingNotes.lower_bound(pair<int, int>(t, 0)); i != playingNotes.end() && (*i).first < pair<int, int>(tn, 0);)
            {
                MapIntToMTEvent::iterator t = i++;
                nd.notesToGUI.push_back(NoteToGUI((*t).second.Off(), false));
                playingNotes.erase(t);
            }

            for (MapIntToMTEvent::const_iterator i = mt.events.lower_bound(pair<int, int>(t, 0)); i != mt.events.end() && (*i).first < pair<int, int>(tn, 0); i++)
            {
                int endt = (*i).first.first + (*i).second.Length;
                if (endt >= tn)
                {
                    e.push_back((*i).second);
                    playingNotes[pair<int, int>(endt, (*i).first.second)] = (*i).second;
                    nd.notesToGUI.push_back(NoteToGUI((*i).second, false));
                }
            }

            if (noteOffRecBuffer.size() > 0)
            {
                for (vector<MTEvent>::iterator i = noteOffRecBuffer.begin(); i != noteOffRecBuffer.end(); i++)
                {
                    map<int, MTEvent>::iterator j = recordingNotes.find((*i).D1);
                    if (j != recordingNotes.end())
                    {
                        int len = t - (*j).second.Length;
                        len = max(len, tn - t); // <---- maybe not a good idea
                        if (len > 0)
                        {
                            mt.events[pair<int, int>((*j).second.Length, (*j).second.D1)] = MTEvent((*j).second.D1, (*j).second.D2, len);
                            nd.recNotesToGUI.push_back(pair<int, MTEvent>((*j).second.Length, MTEvent((*j).second.D1, (*j).second.D2, len)));
                        }

                        recordingNotes.erase(j);
                    }

                }

                noteOffRecBuffer.clear();
            }

            if (noteOnRecBuffer.size() > 0)
            {
                for (vector<MTEvent>::iterator i = noteOnRecBuffer.begin(); i != noteOnRecBuffer.end(); i++)
                    recordingNotes[(*i).D1] = MTEvent((*i).D1, (*i).D2, t); // using length to store time

                noteOnRecBuffer.clear();
            }

            ::LeaveCriticalSection(&nd.PatternCS);

            for (int i = 0; i < (int)e.size(); i++)
                pCB->SendMidiNote(TargetMac, 0, e[i].D1, e[i].D2);

        }
    }

    if (psti != NULL && psti->PosInSubTick == 0)
        nd.playingNoteSet->Process(PIANOROLL_TPB / 4 / psti->SubTicksPerTick);

    return false;

}