C++ MidiMessage::isNoteOff方法代码示例

void SoftSynthAudioProcessor::processBlock (AudioSampleBuffer& buffer, MidiBuffer& midiMessages)
{
    MidiBuffer processedMidi;
    int time;
    MidiMessage m;
    
    for (MidiBuffer::Iterator i(midiMessages); i.getNextEvent(m, time);) {
        if (m.isNoteOn()) {
            m = MidiMessage::noteOn(m.getChannel(), m.getNoteNumber(), m.getVelocity());
            synth.keyPressed(m.getNoteNumber(), m.getVelocity());
        } else if (m.isNoteOff()) {
            m = MidiMessage::noteOff(m.getChannel(), m.getNoteNumber(), m.getVelocity());
            synth.keyReleased(m.getNoteNumber());
        }
        
        processedMidi.addEvent(m, time);
    }
    
    auto synthBuffer = synth.getNextBuffer(buffer.getNumSamples());
    float *leftData = buffer.getWritePointer(0);
    float *rightData = buffer.getWritePointer(1);
    for (int i = 0; i < buffer.getNumSamples(); ++i) {
        leftData[i] = synthBuffer[i];
        rightData[i] = synthBuffer[i];
    }
    
    midiMessages.swapWith(processedMidi);
}

static void RT_MIDI_send_msg_to_patch(struct Patch *patch, MidiMessage message, int64_t seq_time){       
  if (message.isNoteOn())
    RT_PATCH_play_note(patch, message.getNoteNumber(), -1, message.getVelocity() / 127.0f, 0.0f, seq_time);
  
  else if (message.isNoteOff())
    RT_PATCH_stop_note(patch, message.getNoteNumber(), -1, seq_time);
  
  else if (message.isAftertouch())
    RT_PATCH_change_velocity(patch, message.getNoteNumber(), -1, message.getChannelPressureValue() / 127.0f, seq_time);

  else {
    
    const uint8_t *raw_data = message.getRawData();
    int len = message.getRawDataSize();

    R_ASSERT_RETURN_IF_FALSE(len>=1 && len<=3);

    uint32_t msg;

    if (len==3)
      msg = MIDI_msg_pack3(raw_data[0],raw_data[1],raw_data[2]);
    else if (len==2)
      msg = MIDI_msg_pack2(raw_data[0],raw_data[1]);
    else if (len==1)
      msg = MIDI_msg_pack1(raw_data[0]);
    else
      return;
    
    RT_PATCH_send_raw_midi_message(patch, msg, seq_time);
  }
}

void Synthesiser::handleMidiEvent (const MidiMessage& m)
{
    if (m.isNoteOn())
    {
        noteOn (m.getChannel(),
                m.getNoteNumber(),
                m.getFloatVelocity());
    }
    else if (m.isNoteOff())
    {
        noteOff (m.getChannel(),
                 m.getNoteNumber(),
                 true);
    }
    else if (m.isAllNotesOff() || m.isAllSoundOff())
    {
        allNotesOff (m.getChannel(), true);
    }
    else if (m.isPitchWheel())
    {
        const int channel = m.getChannel();
        const int wheelPos = m.getPitchWheelValue();
        lastPitchWheelValues [channel - 1] = wheelPos;

        handlePitchWheel (channel, wheelPos);
    }
    else if (m.isController())
    {
        handleController (m.getChannel(),
                          m.getControllerNumber(),
                          m.getControllerValue());
    }
}

const CtrlrMidiMessageType midiMessageToType (const MidiMessage &midiMessage)
{
	if (midiMessage.isController())
	{
		return (CC);
	}
	else if (midiMessage.isSysEx())
	{
		return (SysEx);
	}
	else if (midiMessage.isNoteOn())
	{
		return (NoteOn);
	}
	else if (midiMessage.isNoteOff())
	{
		return (NoteOff);
	}
	else if (midiMessage.isAftertouch())
	{
		return (Aftertouch);
	}
	else if (midiMessage.isChannelPressure())
	{
		return (ChannelPressure);
	}
	else if (midiMessage.isProgramChange())
	{
		return (ProgramChange);
	}
	else if (midiMessage.isPitchWheel())
	{
		return (PitchWheel);
	}
	else if (midiMessage.isMidiClock())
	{
		return (MidiClock);
	}
	else if (midiMessage.isMidiContinue())
	{
		return (MidiClockContinue);
	}
	else if (midiMessage.isMidiStart())
	{
		return (MidiClockStart);
	}
	else if (midiMessage.isMidiStop())
	{
		return (MidiClockStop);
	}
	else if (midiMessage.isActiveSense())
	{
		return (ActiveSense);
	}
	return (SysEx);
}

void MIDIInputDevice::handleIncomingMidiMessage(MidiInput * source, const MidiMessage & message)
{
	if (source != device)
	{
		DBG("different device");
		return;
	}

	if (message.isNoteOn()) inputListeners.call(&MIDIInputListener::noteOnReceived, message.getChannel(), message.getNoteNumber(), message.getVelocity());
	else if(message.isNoteOff()) inputListeners.call(&MIDIInputListener::noteOffReceived, message.getChannel(), message.getNoteNumber(), 0); //force note off to velocity 0
	else if(message.isController()) inputListeners.call(&MIDIInputListener::controlChangeReceived, message.getChannel(), message.getControllerNumber(), message.getControllerValue());
	else if(message.isSysEx()) inputListeners.call(&MIDIInputListener::sysExReceived, message);
}

void MidiKeyboardState::processNextMidiEvent (const MidiMessage& message)
{
    if (message.isNoteOn())
    {
        noteOnInternal (message.getChannel(), message.getNoteNumber(), message.getFloatVelocity());
    }
    else if (message.isNoteOff())
    {
        noteOffInternal (message.getChannel(), message.getNoteNumber(), message.getFloatVelocity());
    }
    else if (message.isAllNotesOff())
    {
        for (int i = 0; i < 128; ++i)
            noteOffInternal (message.getChannel(), i, 0.0f);
    }
}

static PyObject *
PyMidiMessage_str(PyObject *self) {
  MidiMessage *m = ((PyMidiMessage*)self)->m;
  static char s[256];
  if(m->isNoteOn()) {
    sprintf(s, "<NOTE ON, note: %d (%s), velocity: %d, channel: %d>",
            m->getNoteNumber(),
            m->getMidiNoteName(m->getNoteNumber(), true, true, 3),
            m->getVelocity(),
            m->getChannel());
  } else if(m->isNoteOff()) {
    sprintf(s, "<NOTE OFF, note: %d (%s), channel: %d>",
            m->getNoteNumber(),
            m->getMidiNoteName(m->getNoteNumber(), true, true, 3),
            m->getChannel());
  } else if(m->isProgramChange()) {
    sprintf(s, "<PROGRAM CHANGE: program: %d, channel: %d>", m->getProgramChangeNumber(), m->getChannel());
  } else if(m->isPitchWheel()) {
    sprintf(s, "<PITCH WHEEL: value: %d, channel: %d>", m->getPitchWheelValue(), m->getChannel());
  } else if(m->isAftertouch()) {
    sprintf(s, "<AFTERTOUCH: note: %d (%s) value: %d, channel: %d>",
            m->getNoteNumber(),
            m->getMidiNoteName(m->getNoteNumber(), true, true, 3),
            m->getAfterTouchValue(),
            m->getChannel());
  } else if(m->isChannelPressure()) {
    sprintf(s, "<CHANNEL PRESSURE: pressure: %d, channel: %d>", m->getChannelPressureValue(), m->getChannel());
  } else if(m->isController()) {
    const char *name = m->getControllerName(m->getControllerNumber());
    if(strlen(name) > 0) {
      sprintf(s, "<CONTROLLER: %d (\"%s\"), value: %d, channel: %d>",
              m->getControllerNumber(),
              m->getControllerName(m->getControllerNumber()),
              m->getControllerValue(),
              m->getChannel());
    } else {
      sprintf(s, "<CONTROLLER: %d, value: %d, channel: %d>",
              m->getControllerNumber(),
              m->getControllerValue(),
              m->getChannel());
    }
  } else {
    sprintf(s, "<MidiMessage (misc type)>");
  }

  return PK_STRING(s);
}

void MidiManager::processMidiMessage(const MidiMessage& midi_message, int sample_position) {
  if (midi_message.isProgramChange()) {
    current_patch_ = midi_message.getProgramChangeNumber();
    File patch = LoadSave::loadPatch(current_bank_, current_folder_, current_patch_,
                                     synth_, *gui_state_);
    PatchLoadedCallback* callback = new PatchLoadedCallback(listener_, patch);
    callback->post();
    return;
  }

  if (midi_message.isNoteOn()) {
    engine_->noteOn(midi_message.getNoteNumber(),
                    midi_message.getVelocity() / (mopo::MIDI_SIZE - 1.0),
                    0, midi_message.getChannel() - 1);
  }
  else if (midi_message.isNoteOff())
    engine_->noteOff(midi_message.getNoteNumber());
  else if (midi_message.isAllNotesOff())
    engine_->allNotesOff();
  else if (midi_message.isSustainPedalOn())
    engine_->sustainOn();
  else if (midi_message.isSustainPedalOff())
    engine_->sustainOff();
  else if (midi_message.isAftertouch()) {
    mopo::mopo_float note = midi_message.getNoteNumber();
    mopo::mopo_float value = (1.0 * midi_message.getAfterTouchValue()) / mopo::MIDI_SIZE;
    engine_->setAftertouch(note, value);
  }
  else if (midi_message.isPitchWheel()) {
    double percent = (1.0 * midi_message.getPitchWheelValue()) / PITCH_WHEEL_RESOLUTION;
    double value = 2 * percent - 1.0;
    engine_->setPitchWheel(value, midi_message.getChannel());
  }
  else if (midi_message.isController()) {
    int controller_number = midi_message.getControllerNumber();
    if (controller_number == MOD_WHEEL_CONTROL_NUMBER) {
      double percent = (1.0 * midi_message.getControllerValue()) / MOD_WHEEL_RESOLUTION;
      engine_->setModWheel(percent, midi_message.getChannel());
    }
    else if (controller_number == BANK_SELECT_NUMBER)
      current_bank_ = midi_message.getControllerValue();
    else if (controller_number == FOLDER_SELECT_NUMBER)
      current_folder_ = midi_message.getControllerValue();
    midiInput(midi_message.getControllerNumber(), midi_message.getControllerValue());
  }
}

/** This function is called whenever the Seaboard object receives some Midi data from the physical Seaboard. It sends out the relevant midi message to all of its listeners, who in return overwrite the midi message functions in order to implement the desired response behaviour.*/
void Seaboard::handleIncomingMidiMessage(MidiInput *source, const MidiMessage &message)
{
	if (message.isNoteOn())
	{
		listeners.call(&Seaboard::Listener::seaboardDidGetNoteOn,message);
	}
	else if (message.isNoteOff())
	{
		listeners.call(&Seaboard::Listener::seaboardDidGetNoteOff,message);
	}
	else if (message.isAftertouch())
	{
		listeners.call(&Seaboard::Listener::seaboardDidGetAftertouch,message);
	}
	else if (message.isPitchWheel())
	{
		listeners.call(&Seaboard::Listener::seaboardDidGetPitchBend,message);
	}
	listeners.call(&Seaboard::Listener::seaboardDidGetMessage,message);
}

void Tunefish4AudioProcessor::processEvents(MidiBuffer &midiMessages, eU32 messageOffset, eU32 frameSize)
{
    MidiBuffer::Iterator it(midiMessages);
    MidiMessage midiMessage;
    int samplePosition;

    it.setNextSamplePosition(messageOffset);

    while (it.getNextEvent(midiMessage, samplePosition))
    {
        if (samplePosition >= messageOffset + frameSize)
            break;

        if (midiMessage.isNoteOn())
        {
            eU8 velocity = midiMessage.getVelocity();
            eU8 note = midiMessage.getNoteNumber();

            eTfInstrumentNoteOn(*tf, note, velocity);
        }
        else if (midiMessage.isNoteOff())
        {
            eU8 note = midiMessage.getNoteNumber();

            eTfInstrumentNoteOff(*tf, note);
        }
        else if (midiMessage.isAllNotesOff())
        {
            eTfInstrumentAllNotesOff(*tf);
        }
        else if (midiMessage.isPitchWheel())
        {
            eS32 bend_lsb = midiMessage.getRawData()[1] & 0x7f;
            eS32 bend_msb = midiMessage.getRawData()[2] & 0x7f;

            eTfInstrumentPitchBend(*tf, ((eF32(bend_msb) / 127.0f) - 0.5f) * 2.0f,
                                   ((eF32(bend_lsb) / 127.0f) - 0.5f) * 2.0f);
        }
    }
}

void Synthesiser::handleMidiEvent (const MidiMessage& m)
{
    const int channel = m.getChannel();

    if (m.isNoteOn())
    {
        noteOn (channel, m.getNoteNumber(), m.getFloatVelocity());
    }
    else if (m.isNoteOff())
    {
        noteOff (channel, m.getNoteNumber(), m.getFloatVelocity(), true);
    }
    else if (m.isAllNotesOff() || m.isAllSoundOff())
    {
        allNotesOff (channel, true);
    }
    else if (m.isPitchWheel())
    {
        const int wheelPos = m.getPitchWheelValue();
        lastPitchWheelValues [channel - 1] = wheelPos;
        handlePitchWheel (channel, wheelPos);
    }
    else if (m.isAftertouch())
    {
        handleAftertouch (channel, m.getNoteNumber(), m.getAfterTouchValue());
    }
    else if (m.isChannelPressure())
    {
        handleChannelPressure (channel, m.getChannelPressureValue());
    }
    else if (m.isController())
    {
        handleController (channel, m.getControllerNumber(), m.getControllerValue());
    }
    else if (m.isProgramChange())
    {
        handleProgramChange (channel, m.getProgramChangeNumber());
    }
}

void LyrebirdAudioProcessor::processBlock (AudioSampleBuffer& buffer, MidiBuffer& midiMessages)
{
    
    // Do Midi things
    buffer.clear();
    
    int time;
    MidiMessage m;
    
    for (MidiBuffer::Iterator i (midiMessages); i.getNextEvent (m, time);)
    {
        sawGenerator->setWavelength(currentSampleRate, m.getMidiNoteInHertz(m.getNoteNumber()));
        if (m.isNoteOff())
        {
            sawGenerator->setWavelength(currentSampleRate, 0);
        }
    }
    
    
    // In case we have more outputs than inputs, this code clears any output
    // channels that didn't contain input data, (because these aren't
    // guaranteed to be empty - they may contain garbage).
    // I've added this to avoid people getting screaming feedback
    // when they first compile the plugin, but obviously you don't need to
    // this code if your algorithm already fills all the output channels.
    for (int i = getNumInputChannels(); i < getNumOutputChannels(); ++i)
        buffer.clear (i, 0, buffer.getNumSamples());


    float* leftData = buffer.getWritePointer (0);
    float* rightData = buffer.getWritePointer(1);
    for (int sample = 0; sample < buffer.getNumSamples(); sample++)
    {
        leftData[sample] = sawGenerator->getCurrentAmplitude();
        rightData[sample] = sawGenerator->getCurrentAmplitude();
        sawGenerator->incrementSaw();
    }
}

String ZenMidiVisualiserComponent::getMidiMessageDescription(const MidiMessage& m)
{
	if (m.isNoteOn())           return "Note on: " + S(m.getNoteNumber()) + " (" + MidiMessage::getMidiNoteName(m.getNoteNumber(), true, true, 3) + ") Vel: " + S(m.getVelocity());
	if (m.isNoteOff())          return "Note off: " + S(m.getNoteNumber()) + " (" + MidiMessage::getMidiNoteName(m.getNoteNumber(), true, true, 3) + ")";
	if (m.isProgramChange())    return "Program change (Number): " + String(m.getProgramChangeNumber());
	if (m.isPitchWheel())       return "Pitch wheel: " + String(m.getPitchWheelValue());
	if (m.isAftertouch())       return "After touch: " + MidiMessage::getMidiNoteName(m.getNoteNumber(), true, true, 3) + ": " + String(m.getAfterTouchValue());
	if (m.isChannelPressure())  return "Channel pressure: " + String(m.getChannelPressureValue());
	if (m.isAllNotesOff())      return "All notes off";
	if (m.isAllSoundOff())      return "All sound off";
	if (m.isMetaEvent())        return "Meta event";

	if (m.isController())
	{
		String temp = MidiMessage::getControllerName(m.getControllerNumber());
		String name = "Controller [" + S(m.getControllerNumber()) + "]";
		if (!temp.isEmpty())
			name += " " + temp;

		return name + ": " + String(m.getControllerValue());
	}

	return String::toHexString(m.getRawData(), m.getRawDataSize());
}

static String getMidiMessageDescription (const MidiMessage& m)
{
    if (m.isNoteOn())           return "Note on "  + MidiMessage::getMidiNoteName (m.getNoteNumber(), true, true, 3);
    if (m.isNoteOff())          return "Note off " + MidiMessage::getMidiNoteName (m.getNoteNumber(), true, true, 3);
    if (m.isProgramChange())    return "Program change " + String (m.getProgramChangeNumber());
    if (m.isPitchWheel())       return "Pitch wheel " + String (m.getPitchWheelValue());
    if (m.isAftertouch())       return "After touch " + MidiMessage::getMidiNoteName (m.getNoteNumber(), true, true, 3) +  ": " + String (m.getAfterTouchValue());
    if (m.isChannelPressure())  return "Channel pressure " + String (m.getChannelPressureValue());
    if (m.isAllNotesOff())      return "All notes off";
    if (m.isAllSoundOff())      return "All sound off";
    if (m.isMetaEvent())        return "Meta event";

    if (m.isController())
    {
        String name (MidiMessage::getControllerName (m.getControllerNumber()));

        if (name.isEmpty())
            name = "[" + String (m.getControllerNumber()) + "]";

        return "Controler " + name + ": " + String (m.getControllerValue());
    }

    return String::toHexString (m.getRawData(), m.getRawDataSize());
}

//.........这里部分代码省略.........
            _mCenter->handleSignal(*ledStateSignal);
        }
        else if (message.isNoteOn() && _MidiDeviceManager->isNoteEnabled(source->getName(), true)
                 && appProperties->getUserSettings()->getIntValue("midiInputChannel") == message.getChannel())
        {
            // lets set the color based off MIDI note Velocity
            int MIDIVelocity = message.getVelocity();
            int r = 0;
            int g = 0;
            int b = 0;

            if (MIDIVelocity > 0) {
                // red
                if (MIDIVelocity <= 22)
                {
                    r = 127;
                }
                // yellow
                else if (MIDIVelocity <= 43)
                {
                    r = 127;
                    g = 127;
                }
                // green
                else if (MIDIVelocity <= 64)
                {
                    g = 127;
                }
                // teal
                else if (MIDIVelocity <= 85)
                {
                    g = 127;
                    b = 127;
                }
                // blue
                else if (MIDIVelocity <= 106)
                {
                    b = 127;
                }
                // purple
                else
                {
                    b = 127;
                    r = 127;
                }
            }

            // reference counted Signal ( string command, string origin )
            Signal::SignalP ledColourSignal = new Signal("SEND_OSC", "RCV_MIDI");

            ledColourSignal->addStringArg("/nomestate/grid/led/color");
            // get the x position: LED bumber % 8
            ledColourSignal->addIntArg(message.getNoteNumber() % 8);
            // get the y position: LED number / 8
            ledColourSignal->addIntArg(message.getNoteNumber() / 8);
            // get the LED RED:
            ledColourSignal->addIntArg(r);
            // get the LED GREEN:
            ledColourSignal->addIntArg(g);
            // get the LED BLUE:
            ledColourSignal->addIntArg(b);

            _mCenter->handleSignal(*ledColourSignal);

            // reference counted Signal ( string command, string origin )
            Signal::SignalP ledStateSignal = new Signal("SEND_OSC", "RCV_MIDI");

            ledStateSignal->addStringArg("/nomestate/grid/led/set");
            // get the x position: LED bumber % 8
            ledStateSignal->addIntArg(message.getNoteNumber() % 8);
            // get the y position: LED number / 8
            ledStateSignal->addIntArg(message.getNoteNumber() / 8);
            // get the LED state: toggleState

            ledStateSignal->addIntArg(1);

            _mCenter->handleSignal(*ledStateSignal);


        }
        else if (message.isNoteOff() && _MidiDeviceManager->isNoteEnabled(source->getName(), true)
                 && appProperties->getUserSettings()->getIntValue("midiInputChannel") == message.getChannel())
        {
            // reference counted Signal ( string command, string origin )
            Signal::SignalP ledStateSignal = new Signal("SEND_OSC", "RCV_MIDI");

            ledStateSignal->addStringArg("/nomestate/grid/led/set");
            // get the x position: LED bumber % 8
            ledStateSignal->addIntArg(message.getNoteNumber() % 8);
            // get the y position: LED number / 8
            ledStateSignal->addIntArg(message.getNoteNumber() / 8);
            // get the LED state: toggleState

            ledStateSignal->addIntArg(0);

            _mCenter->handleSignal(*ledStateSignal);
        }

    }
}