C++ MidiDevice::getPresentationInstruments方法代码示例

void
MidiMixerWindow::setupTabs()
{
    DeviceListConstIterator it;
    MidiDevice *dev = 0;
    InstrumentList instruments;
    InstrumentList::const_iterator iIt;
    int faderCount = 0, deviceCount = 1;

    if (m_tabFrame)
        delete m_tabFrame;

    // Setup m_tabFrame
    //

    QWidget *blackWidget = new QWidget(this);
    setCentralWidget(blackWidget);
    QVBoxLayout *centralLayout = new QVBoxLayout;
    blackWidget->setLayout(centralLayout);

    m_tabWidget = new QTabWidget;
    centralLayout->addWidget(m_tabWidget);

    connect(m_tabWidget, SIGNAL(currentChanged(QWidget *)),
            this, SLOT(slotCurrentTabChanged(QWidget *)));
    m_tabWidget->setTabPosition(QTabWidget::South);
    setWindowTitle(tr("MIDI Mixer"));
    setWindowIcon(IconLoader().loadPixmap("window-midimixer"));


    for (it = m_studio->begin(); it != m_studio->end(); ++it) {
        dev = dynamic_cast<MidiDevice*>(*it);

        if (dev) {
            // Get the control parameters that are on the IPB (and hence can
            // be shown here too).
            //
            ControlList controls = getIPBForMidiMixer(dev);

            instruments = dev->getPresentationInstruments();

            // Don't add a frame for empty devices
            //
            if (!instruments.size())
                continue;

            m_tabFrame = new QFrame(m_tabWidget);
            m_tabFrame->setContentsMargins(10, 10, 10, 10);

            // m_tabFrame->setContentsMargins(5, 5, 5, 5); ???
            QGridLayout *mainLayout = new QGridLayout(m_tabFrame);

            // MIDI Mixer label
            QLabel *label = new QLabel("", m_tabFrame);
            mainLayout->addWidget(label, 0, 0, 0, 16, Qt::AlignCenter);

            // control labels
            for (size_t i = 0; i < controls.size(); ++i) {
                label = new QLabel(QObject::tr(controls[i].getName().c_str()), m_tabFrame);
                mainLayout->addWidget(label, i + 1, 0, Qt::AlignCenter);
            }

            // meter label
            // (obsolete abandoned code deleted here)

            // volume label
            label = new QLabel(tr("Volume"), m_tabFrame);
            mainLayout->addWidget(label, controls.size() + 2, 0,
                                  Qt::AlignCenter);

            // instrument label
            label = new QLabel(tr("Instrument"), m_tabFrame);
            label->setFixedWidth(80); //!!! this should come from metrics
            mainLayout->addWidget(label, controls.size() + 3, 0,
                                  Qt::AlignLeft);

            int posCount = 1;
            int firstInstrument = -1;

            for (iIt = instruments.begin(); iIt != instruments.end(); ++iIt) {

                // Add new fader struct
                //
                m_faders.push_back(new FaderStruct());

                // Store the first ID
                //
                if (firstInstrument == -1)
                    firstInstrument = (*iIt)->getId();


                // Add the controls
                //
                for (size_t i = 0; i < controls.size(); ++i) {
                    QColor knobColour = QColor(Qt::white);

                    if (controls[i].getColourIndex() > 0) {
                        Colour c =
                            m_document->getComposition().getGeneralColourMap().
                            getColourByIndex(controls[i].getColourIndex());
//.........这里部分代码省略.........

void
MidiMixerWindow::slotControllerDeviceEventReceived(MappedEvent *e,
        const void *preferredCustomer)
{
    if (preferredCustomer != this)
        return ;
    RG_DEBUG << "MidiMixerWindow::slotControllerDeviceEventReceived: this one's for me" << endl;
    raise();

    // get channel number n from event
    // get nth instrument on current tab

    if (e->getType() != MappedEvent::MidiController)
        return ;
    unsigned int channel = e->getRecordedChannel();
    MidiByte controller = e->getData1();
    MidiByte value = e->getData2();

    int tabIndex = m_tabWidget->currentIndex();

    int i = 0;

    for (DeviceList::const_iterator it = m_studio->begin();
            it != m_studio->end(); ++it) {

        MidiDevice *dev =
            dynamic_cast<MidiDevice*>(*it);

        if (!dev)
            continue;
        if (i != tabIndex) {
            ++i;
            continue;
        }

        InstrumentList instruments = dev->getPresentationInstruments();

        for (InstrumentList::const_iterator iIt =
                    instruments.begin(); iIt != instruments.end(); ++iIt) {

            Instrument *instrument = *iIt;

            if (instrument->getNaturalChannel() != channel)
                continue;

            ControlList cl = dev->getIPBControlParameters();
            for (ControlList::const_iterator i = cl.begin();
                    i != cl.end(); ++i) {
                if ((*i).getControllerValue() == controller) {
                    RG_DEBUG << "Setting controller " << controller << " for instrument " << instrument->getId() << " to " << value << endl;
                    instrument->setControllerValue(controller, value);
                    break;
                }
            }

            slotUpdateInstrument(instrument->getId());
            emit instrumentParametersChanged(instrument->getId());
        }

        break;
    }
}

void
MidiMixerWindow::sendControllerRefresh()
{
    //!!! need to know if we have a current external controller device,
    // as this is expensive

    int tabIndex = m_tabWidget->currentIndex();
    RG_DEBUG << "MidiMixerWindow::slotCurrentTabChanged: current is " << tabIndex << endl;

    if (tabIndex < 0)
        return ;

    int i = 0;

    for (DeviceList::const_iterator dit = m_studio->begin();
            dit != m_studio->end(); ++dit) {

        MidiDevice *dev = dynamic_cast<MidiDevice*>(*dit);
        RG_DEBUG << "device is " << (*dit)->getId() << ", dev " << dev << endl;

        if (!dev)
            continue;
        if (i != tabIndex) {
            ++i;
            continue;
        }

        InstrumentList instruments = dev->getPresentationInstruments();
        ControlList controls = getIPBForMidiMixer(dev);

        RG_DEBUG << "device has " << instruments.size() << " presentation instruments, " << dev->getAllInstruments().size() << " instruments " << endl;

        for (InstrumentList::const_iterator iIt =
                    instruments.begin(); iIt != instruments.end(); ++iIt) {

            Instrument *instrument = *iIt;
            if (!instrument->hasFixedChannel()) { continue; }
            int channel = instrument->getNaturalChannel();

            RG_DEBUG << "instrument is " << instrument->getId() << endl;

            for (ControlList::const_iterator cIt =
                        controls.begin(); cIt != controls.end(); ++cIt) {

                int controller = (*cIt).getControllerValue();
                int value;
                try {
                    value = instrument->getControllerValue(controller);
                } catch (std::string s) {
                    std::cerr << "Exception in MidiMixerWindow::currentChanged: " << s << " (controller " << controller << ", instrument " << instrument->getId() << ")" << std::endl;
                    value = 0;
                }

                MappedEvent mE(instrument->getId(),
                               MappedEvent::MidiController,
                               controller, value);
                mE.setRecordedChannel(channel);
                mE.setRecordedDevice(Device::CONTROL_DEVICE);
                StudioControl::sendMappedEvent(mE);
            }

            MappedEvent mE(instrument->getId(),
                           MappedEvent::MidiController,
                           MIDI_CONTROLLER_VOLUME,
                           instrument->getVolume());
            mE.setRecordedChannel(channel);
            mE.setRecordedDevice(Device::CONTROL_DEVICE);
            RG_DEBUG << "sending controller mapped event for channel " << channel << ", volume " << instrument->getVolume() << endl;
            StudioControl::sendMappedEvent(mE);
        }

        break;
    }
}

void
MidiMixerWindow::slotUpdateInstrument(InstrumentId id)
{
    //RG_DEBUG << "MidiMixerWindow::slotUpdateInstrument - id = " << id << endl;

    DeviceListConstIterator it;
    MidiDevice *dev = 0;
    InstrumentList instruments;
    InstrumentList::const_iterator iIt;
    int count = 0;

    blockSignals(true);

    for (it = m_studio->begin(); it != m_studio->end(); ++it) {
        dev = dynamic_cast<MidiDevice*>(*it);

        if (dev) {
            instruments = dev->getPresentationInstruments();
            ControlList controls = getIPBForMidiMixer(dev);

            for (iIt = instruments.begin(); iIt != instruments.end(); ++iIt) {
                // Match and set
                //
                if ((*iIt)->getId() == id) {
                    // Set Volume fader
                    //
                    m_faders[count]->m_volumeFader->blockSignals(true);

                    MidiByte volumeValue;
                    try {
                        volumeValue = (*iIt)->
                                getControllerValue(MIDI_CONTROLLER_VOLUME);
                    } catch (std::string s) {
                        // This should never get called.
                        volumeValue = (*iIt)->getVolume();
                    }
                    
                    m_faders[count]->m_volumeFader->setFader(float(volumeValue));
                    m_faders[count]->m_volumeFader->blockSignals(false);

                    /*
                    StaticControllers &staticControls = 
                        (*iIt)->getStaticControllers();
                    RG_DEBUG << "STATIC CONTROLS SIZE = " 
                             << staticControls.size() << endl;
                    */

                    // Set all controllers for this Instrument
                    //
                    for (size_t i = 0; i < controls.size(); ++i) {
                        float value = 0.0;

                        m_faders[count]->m_controllerRotaries[i].second->blockSignals(true);

                        // The ControllerValues might not yet be set on
                        // the actual Instrument so don't always expect
                        // to find one.  There might be a hole here for
                        // deleted Controllers to hang around on
                        // Instruments..
                        //
                        try {
                            value = float((*iIt)->getControllerValue
                                          (controls[i].getControllerValue()));
                        } catch (std::string s) {
                            /*
                            RG_DEBUG << 
                            "MidiMixerWindow::slotUpdateInstrument - "
                                     << "can't match controller " 
                                     << int(controls[i].
                                         getControllerValue()) << " - \""
                                     << s << "\"" << endl;
                                     */
                            continue;
                        }

                        /*
                        RG_DEBUG << "MidiMixerWindow::slotUpdateInstrument"
                                 << " - MATCHED "
                                 << int(controls[i].getControllerValue())
                                 << endl;
                                 */

                        m_faders[count]->m_controllerRotaries[i].
                        second->setPosition(value);

                        m_faders[count]->m_controllerRotaries[i].second->blockSignals(false);
                    }
                }
                count++;
            }
        }
    }

    blockSignals(false);
}