コード例 #1
0
void MidiFile::writeEvent(const MidiEvent& event)
      {
      switch(event.type()) {
            case ME_NOTEON:
                  writeStatus(ME_NOTEON, event.channel());
                  put(event.pitch());
                  put(event.velo());
                  break;

            case ME_NOTEOFF:
                  writeStatus(ME_NOTEOFF, event.channel());
                  put(event.pitch());
                  put(event.velo());
                  break;

            case ME_CONTROLLER:
                  switch(event.controller()) {
                        case CTRL_PROGRAM:
                              writeStatus(ME_PROGRAM, event.channel());
                              put(event.value() & 0x7f);
                              break;
                        case CTRL_PITCH:
                              {
                              writeStatus(ME_PITCHBEND, event.channel());
                              int v = event.value() + 8192;
                              put(v & 0x7f);
                              put((v >> 7) & 0x7f);
                              }
                              break;
                        case CTRL_PRESS:
                              writeStatus(ME_AFTERTOUCH, event.channel());
                              put(event.value() & 0x7f);
                              break;
                        default:
                              writeStatus(ME_CONTROLLER, event.channel());
                              put(event.controller());
                              put(event.value() & 0x7f);
                              break;
                        }
                  break;

            case ME_META:
                  put(ME_META);
                  put(event.metaType());
                  putvl(event.len());
                  write(event.edata(), event.len());
                  resetRunningStatus();     // really ?!
                  break;

            case ME_SYSEX:
                  put(ME_SYSEX);
                  putvl(event.len() + 1);  // including 0xf7
                  write(event.edata(), event.len());
                  put(ME_ENDSYSEX);
                  resetRunningStatus();
                  break;
            }
      }
コード例 #2
0
ファイル: midifile.cpp プロジェクト: Angeldude/MuseScore
bool MidiFile::readTrack()
      {
      char tmp[4];
      read(tmp, 4);
      if (memcmp(tmp, "MTrk", 4))
            throw(QString("bad midifile: MTrk expected"));
      int len       = readLong();       // len
      qint64 endPos = curPos + len;
      status        = -1;
      sstatus       = -1;  // running status, will not be reset on meta or sysex
      click         =  0;
      _tracks.push_back(MidiTrack());

      int port = 0;
      _tracks.back().setOutPort(port);
      _tracks.back().setOutChannel(-1);

      for (;;) {
            MidiEvent event;
            if (!readEvent(&event))
                  return true;

            // check for end of track:
            if ((event.type() == ME_META) && (event.metaType() == META_EOT))
                  break;
            _tracks.back().insert(click, event);
            }
      if (curPos != endPos) {
            qWarning("bad track len: %lld != %lld, %lld bytes too much\n", endPos, curPos, endPos - curPos);
            if (curPos < endPos) {
                  qWarning("  skip %lld\n", endPos-curPos);
                  skip(endPos - curPos);
                  }
            }
      return false;
      }
コード例 #3
0
bool isLyricEvent(const MidiEvent &e)
      {
      return e.type() == ME_META && (e.metaType() == META_TEXT
                                     || e.metaType() == META_LYRIC);
      }
コード例 #4
0
ファイル: importmidi.cpp プロジェクト: Skibol/MuseScore
void MTrack::processMeta(int tick, const MidiEvent& mm)
      {
      if (!staff) {
            qDebug("processMeta: no staff");
            return;
            }
      const uchar* data = (uchar*)mm.edata();
      int staffIdx      = staff->idx();
      Score* cs         = staff->score();

      switch (mm.metaType()) {
            case META_TEXT:
            case META_LYRIC: {
                  QString s((char*)data);
                  cs->addLyrics(tick, staffIdx, s);
                  }
                  break;

            case META_TRACK_NAME:
                  name = (const char*)data;
                  break;

            case META_TEMPO:
                  {
                  unsigned tempo = data[2] + (data[1] << 8) + (data[0] <<16);
                  double t = 1000000.0 / double(tempo);
                  cs->setTempo(tick, t);
                  // TODO: create TempoText
                  }
                  break;

            case META_KEY_SIGNATURE:
                  {
                  int key = ((const char*)data)[0];
                  if (key < -7 || key > 7) {
                        qDebug("ImportMidi: illegal key %d", key);
                        break;
                        }
                  KeySigEvent ks;
                  ks.setAccidentalType(key);
                  (*staff->keymap())[tick] = ks;
                  hasKey = true;
                  }
                  break;
            case META_COMPOSER:     // mscore extension
            case META_POET:
            case META_TRANSLATOR:
            case META_SUBTITLE:
            case META_TITLE:
                  {
                  Text* text = new Text(cs);
                  switch(mm.metaType()) {
                        case META_COMPOSER:
                              text->setTextStyleType(TEXT_STYLE_COMPOSER);
                              break;
                        case META_TRANSLATOR:
                              text->setTextStyleType(TEXT_STYLE_TRANSLATOR);
                              break;
                        case META_POET:
                              text->setTextStyleType(TEXT_STYLE_POET);
                              break;
                        case META_SUBTITLE:
                              text->setTextStyleType(TEXT_STYLE_SUBTITLE);
                              break;
                        case META_TITLE:
                              text->setTextStyleType(TEXT_STYLE_TITLE);
                              break;
                        }

                  text->setText((const char*)(mm.edata()));

                  MeasureBase* measure = cs->first();
                  if (measure->type() != Element::VBOX) {
                        measure = new VBox(cs);
                        measure->setTick(0);
                        measure->setNext(cs->first());
                        cs->add(measure);
                        }
                  measure->add(text);
                  }
                  break;

            case META_COPYRIGHT:
                  cs->setMetaTag("Copyright", QString((const char*)(mm.edata())));
                  break;

            case META_TIME_SIGNATURE:
                  qDebug("midi: meta timesig: %d, division %d", tick, MScore::division);
                  cs->sigmap()->add(tick, Fraction(data[0], 1 << data[1]));
                  break;

            default:
                  if (MScore::debugMode)
                        qDebug("unknown meta type 0x%02x", mm.metaType());
                  break;
            }
      }