audiopluginoscguimanager.cpp

LINUX下的混音软件

    }

    url = url.arg(label);

    return url;
}

bool
AudioPluginOSCGUIManager::parseOSCPath(QString path, InstrumentId &instrument,
                                       int &position, QString &method)
{
    RG_DEBUG << "AudioPluginOSCGUIManager::parseOSCPath(" << path << ")" << endl;
    if (!m_studio)
        return false;

    QString pluginStr("/plugin/");

    if (path.startsWith("//")) {
        path = path.right(path.length() - 1);
    }

    if (!path.startsWith(pluginStr)) {
        RG_DEBUG << "AudioPluginOSCGUIManager::parseOSCPath: malformed path "
        << path << endl;
        return false;
    }

    path = path.right(path.length() - pluginStr.length());

    QString type = path.section('/', 0, 0);
    QString instrumentStr = path.section('/', 1, 1);
    QString positionStr = path.section('/', 2, 2);
    QString label = path.section('/', 3, -2);
    method = path.section('/', -1, -1);

    if (!instrumentStr || !positionStr) {
        RG_DEBUG << "AudioPluginOSCGUIManager::parseOSCPath: no instrument or position in " << path << endl;
        return false;
    }

    instrument = instrumentStr.toUInt();

    if (positionStr == "synth") {
        position = Instrument::SYNTH_PLUGIN_POSITION;
    } else {
        position = positionStr.toInt();
    }

    // check the label
    PluginContainer *container = m_studio->getContainerById(instrument);
    if (!container) {
        RG_DEBUG << "AudioPluginOSCGUIManager::parseOSCPath: no such instrument or buss as "
        << instrument << " in path " << path << endl;
        return false;
    }

    AudioPluginInstance *pluginInstance = container->getPlugin(position);
    if (!pluginInstance) {
        RG_DEBUG << "AudioPluginOSCGUIManager::parseOSCPath: no plugin at position "
        << position << " for instrument " << instrument << " in path "
        << path << endl;
        return false;
    }

    QString identifier = strtoqstr(pluginInstance->getIdentifier());
    QString iType, iSoName, iLabel;
    PluginIdentifier::parseIdentifier(identifier, iType, iSoName, iLabel);
    if (iLabel != label) {
        RG_DEBUG << "AudioPluginOSCGUIManager::parseOSCPath: wrong label for plugin"
        << " at position " << position << " for instrument " << instrument
        << " in path " << path << " (actual label is " << iLabel
        << ")" << endl;
        return false;
    }

    RG_DEBUG << "AudioPluginOSCGUIManager::parseOSCPath: good path " << path
    << ", got mapped id " << pluginInstance->getMappedId() << endl;

    return true;
}

QString
AudioPluginOSCGUIManager::getFriendlyName(InstrumentId instrument, int position,
        QString)
{
    PluginContainer *container = m_studio->getContainerById(instrument);
    if (!container)
        return i18n("Rosegarden Plugin");
    else {
        if (position == int(Instrument::SYNTH_PLUGIN_POSITION)) {
            return i18n("Rosegarden: %1").arg(strtoqstr(container->getPresentationName()));
        } else {
            return i18n("Rosegarden: %1: %2").arg(strtoqstr(container->getPresentationName()))
                   .arg(i18n("Plugin slot %1").arg(position));
        }
    }
}

void
AudioPluginOSCGUIManager::timerCallback(void *data)
{
    AudioPluginOSCGUIManager *manager = (AudioPluginOSCGUIManager *)data;
    manager->dispatch();
}

void
AudioPluginOSCGUIManager::dispatch()
{
    if (!m_studio)
        return ;

    while (m_oscBuffer.getReadSpace() > 0) {

        OSCMessage *message = 0;
        m_oscBuffer.read(&message, 1);

        int instrument = message->getTarget();
        int position = message->getTargetData();

        PluginContainer *container = m_studio->getContainerById(instrument);
        if (!container) continue;

        AudioPluginInstance *pluginInstance = container->getPlugin(position);
        if (!pluginInstance) continue;

        AudioPluginOSCGUI *gui = 0;

        if (m_guis.find(instrument) == m_guis.end()) {
            RG_DEBUG << "AudioPluginOSCGUIManager: no GUI for instrument "
            << instrument << endl;
        } else if (m_guis[instrument].find(position) == m_guis[instrument].end()) {
            RG_DEBUG << "AudioPluginOSCGUIManager: no GUI for instrument "
            << instrument << ", position " << position << endl;
        } else {
            gui = m_guis[instrument][position];
        }

        std::string method = message->getMethod();

        char type;
        const lo_arg *arg;

        // These generally call back on the RosegardenGUIApp.  We'd
        // like to emit signals, but making AudioPluginOSCGUIManager a
        // QObject is problematic if it's only conditionally compiled.

        if (method == "control") {

            if (message->getArgCount() != 2) {
                RG_DEBUG << "AudioPluginOSCGUIManager: wrong number of args ("
                << message->getArgCount() << ") for control method"
                << endl;
                goto done;
            }
            if (!(arg = message->getArg(0, type)) || type != 'i') {
                RG_DEBUG << "AudioPluginOSCGUIManager: failed to get port number"
                << endl;
                goto done;
            }
            int port = arg->i;
            if (!(arg = message->getArg(1, type)) || type != 'f') {
                RG_DEBUG << "AudioPluginOSCGUIManager: failed to get port value"
                << endl;
                goto done;
            }
            float value = arg->f;

            RG_DEBUG << "AudioPluginOSCGUIManager: setting port " << port
            << " to value " << value << endl;

            m_app->slotChangePluginPort(instrument, position, port, value);

        } else if (method == "program") {

            if (message->getArgCount() != 2) {
                RG_DEBUG << "AudioPluginOSCGUIManager: wrong number of args ("
                << message->getArgCount() << ") for program method"
                << endl;
                goto done;
            }
            if (!(arg = message->getArg(0, type)) || type != 'i') {
                RG_DEBUG << "AudioPluginOSCGUIManager: failed to get bank number"
                << endl;
                goto done;
            }
            int bank = arg->i;
            if (!(arg = message->getArg(1, type)) || type != 'i') {
                RG_DEBUG << "AudioPluginOSCGUIManager: failed to get program number"
                << endl;
                goto done;
            }
            int program = arg->i;

            QString programName = StudioControl::getPluginProgram
                                  (pluginInstance->getMappedId(), bank, program);

            m_app->slotChangePluginProgram(instrument, position, programName);

        } else if (method == "update") {

            if (message->getArgCount() != 1) {
                RG_DEBUG << "AudioPluginOSCGUIManager: wrong number of args ("
                << message->getArgCount() << ") for update method"
                << endl;
                goto done;
            }
            if (!(arg = message->getArg(0, type)) || type != 's') {
                RG_DEBUG << "AudioPluginOSCGUIManager: failed to get GUI URL"
                << endl;
                goto done;
            }
            QString url = &arg->s;

            if (!gui) {
                RG_DEBUG << "AudioPluginOSCGUIManager: no GUI for update method"
                << endl;
                goto done;
            }

            gui->setGUIUrl(url);

            for (AudioPluginInstance::ConfigMap::const_iterator i =
                        pluginInstance->getConfiguration().begin();
                    i != pluginInstance->getConfiguration().end(); ++i) {

                QString key = strtoqstr(i->first);
                QString value = strtoqstr(i->second);

#ifdef DSSI_PROJECT_DIRECTORY_KEY

                if (key == PluginIdentifier::RESERVED_PROJECT_DIRECTORY_KEY) {
                    key = DSSI_PROJECT_DIRECTORY_KEY;
                }
#endif

                RG_DEBUG << "update: configuration: " << key << " -> "
                << value << endl;

                gui->sendConfiguration(key, value);
            }

            unsigned long rv = StudioControl::getPluginProgram
                               (pluginInstance->getMappedId(), strtoqstr(pluginInstance->getProgram()));

            int bank = rv >> 16;
            int program = rv - (bank << 16);
            gui->sendProgram(bank, program);

            int controlCount = 0;
            for (PortInstanceIterator i = pluginInstance->begin();
                    i != pluginInstance->end(); ++i) {
                gui->sendPortValue((*i)->number, (*i)->value);
                /* Avoid overloading the GUI if there are lots and lots of ports */
                if (++controlCount % 50 == 0)
                    usleep(300000);
            }

            gui->show();

        } else if (method == "configure") {

            if (message->getArgCount() != 2) {
                RG_DEBUG << "AudioPluginOSCGUIManager: wrong number of args ("
                << message->getArgCount() << ") for configure method"
                << endl;
                goto done;
            }

            if (!(arg = message->getArg(0, type)) || type != 's') {
                RG_DEBUG << "AudioPluginOSCGUIManager: failed to get configure key"
                << endl;
                goto done;
            }
            QString key = &arg->s;

            if (!(arg = message->getArg(1, type)) || type != 's') {
                RG_DEBUG << "AudioPluginOSCGUIManager: failed to get configure value"
                << endl;
                goto done;
            }
            QString value = &arg->s;

#ifdef DSSI_RESERVED_CONFIGURE_PREFIX

            if (key.startsWith(DSSI_RESERVED_CONFIGURE_PREFIX) ||
                    key == PluginIdentifier::RESERVED_PROJECT_DIRECTORY_KEY) {
                RG_DEBUG << "AudioPluginOSCGUIManager: illegal reserved configure call from gui: " << key << " -> " << value << endl;
                goto done;
            }
#endif

            RG_DEBUG << "AudioPluginOSCGUIManager: configure(" << key << "," << value
            << ")" << endl;

            m_app->slotChangePluginConfiguration(instrument, position,
#ifdef DSSI_GLOBAL_CONFIGURE_PREFIX
                                                 key.startsWith(DSSI_GLOBAL_CONFIGURE_PREFIX),
#else
                                                 false,
#endif
                                                 key, value);

        } else if (method == "midi") {

            if (message->getArgCount() != 1) {
                RG_DEBUG << "AudioPluginOSCGUIManager: wrong number of args ("
                << message->getArgCount() << ") for midi method"
                << endl;
                goto done;
            }
            if (!(arg = message->getArg(0, type)) || type != 'm') {
                RG_DEBUG << "AudioPluginOSCGUIManager: failed to get MIDI event"
                << endl;
                goto done;
            }

            RG_DEBUG << "AudioPluginOSCGUIManager: handling MIDI message" << endl;

            // let's only handle note on and note off

            int eventCode = arg->m[1];
            int eventType = eventCode & MIDI_MESSAGE_TYPE_MASK;
            if (eventType == MIDI_NOTE_ON ||
                    eventType == MIDI_NOTE_OFF) {
                MappedEvent ev(instrument,
                               MappedEvent::MidiNote,
                               MidiByte(arg->m[2]),
                               MidiByte(arg->m[3]),
                               RealTime::zeroTime,
                               RealTime::zeroTime,
                               RealTime::zeroTime);
                if (eventType == MIDI_NOTE_OFF)
                    ev.setVelocity(0);
                StudioControl::sendMappedEvent(ev);
            }

        } else if (method == "exiting") {

            RG_DEBUG << "AudioPluginOSCGUIManager: GUI exiting" << endl;
            stopGUI(instrument, position);
            m_app->slotPluginGUIExited(instrument, position);

        } else {

            RG_DEBUG << "AudioPluginOSCGUIManager: unknown method " << method << endl;
        }

done:
        delete message;
    }
}

}

#endif