C++ (Cpp) carla_get_library_filename Examples

Example #1

File: carla-native-plugin.cpp Project: falkTX/Carla

int main()
{
    const char* const filename = carla_get_library_filename();
    CARLA_SAFE_ASSERT_RETURN(filename != nullptr && filename[0] != '\0', 1);

    const char* const folder = carla_get_library_folder();
    CARLA_SAFE_ASSERT_RETURN(folder != nullptr && folder[0] != '\0', 1);

    const NativePluginDescriptor* const rack = carla_get_native_rack_plugin();
    CARLA_SAFE_ASSERT_RETURN(rack != nullptr, 1);

    const NativePluginDescriptor* const patchbay = carla_get_native_patchbay_plugin();
    CARLA_SAFE_ASSERT_RETURN(patchbay != nullptr, 1);

    const NativeHostDescriptor host = {
        nullptr,
        "", // resourceDir
        "Carla Plugin UI",
        0,

        get_buffer_size,
        get_sample_rate,
        is_offline,

        nullptr, // get_time_info
        nullptr, // write_midi_event

        nullptr, // ui_parameter_changed
        nullptr, // ui_midi_program_changed
        nullptr, // ui_custom_data_changed
        nullptr, // ui_closed

        nullptr, // ui_open_file
        nullptr, // ui_save_file

        nullptr, // dispatcher
    };

    const NativePluginHandle handle = rack->instantiate(&host);
    CARLA_SAFE_ASSERT_RETURN(handle != nullptr, 1);

    CarlaEngine* const engine = carla_get_native_plugin_engine(rack, handle);
    CARLA_SAFE_ASSERT_RETURN(engine != nullptr, 1);

    carla_stdout("Got Engine %p, %s, %i, %f",
                 engine, engine->getName(), engine->getBufferSize(), engine->getSampleRate());

    rack->cleanup(handle);
    return 0;
}

Example #2

File: carla.cpp Project: Penguinum/lmms

CarlaInstrument::CarlaInstrument(InstrumentTrack* const instrumentTrack, const Descriptor* const descriptor, const bool isPatchbay)
    : Instrument(instrumentTrack, descriptor),
      kIsPatchbay(isPatchbay),
      fHandle(NULL),
      fDescriptor(isPatchbay ? carla_get_native_patchbay_plugin() : carla_get_native_rack_plugin()),
      fMidiEventCount(0)
{
    fHost.handle      = this;
    fHost.uiName      = NULL;
    fHost.uiParentId  = 0;

    // figure out prefix from dll filename
    QString dllName(carla_get_library_filename());

#if defined(CARLA_OS_LINUX)
    fHost.resourceDir = strdup(QString(dllName.split("/lib/carla")[0] + "/share/carla/resources/").toUtf8().constData());
#else
    fHost.resourceDir = NULL;
#endif

    fHost.get_buffer_size        = host_get_buffer_size;
    fHost.get_sample_rate        = host_get_sample_rate;
    fHost.is_offline             = host_is_offline;
    fHost.get_time_info          = host_get_time_info;
    fHost.write_midi_event       = host_write_midi_event;
    fHost.ui_parameter_changed   = host_ui_parameter_changed;
    fHost.ui_custom_data_changed = host_ui_custom_data_changed;
    fHost.ui_closed              = host_ui_closed;
    fHost.ui_open_file           = host_ui_open_file;
    fHost.ui_save_file           = host_ui_save_file;
    fHost.dispatcher             = host_dispatcher;

    std::memset(&fTimeInfo, 0, sizeof(NativeTimeInfo));
    fTimeInfo.bbt.valid = true; // always valid

    fHandle = fDescriptor->instantiate(&fHost);
    Q_ASSERT(fHandle != NULL);

    if (fHandle != NULL && fDescriptor->activate != NULL)
        fDescriptor->activate(fHandle);

    // we need a play-handle which cares for calling play()
    InstrumentPlayHandle * iph = new InstrumentPlayHandle( this, instrumentTrack );
    Engine::mixer()->addPlayHandle( iph );

    connect(Engine::mixer(), SIGNAL(sampleRateChanged()), this, SLOT(sampleRateChanged()));
}