void
ppg_instrument_add_visualizer (PpgInstrument *instrument,
const gchar *name)
{
PpgInstrumentPrivate *priv;
PpgVisualizer *visualizer = NULL;
PpgVisualizerFactory *factory;
PpgVisualizer* (*factory_func) (gpointer user_data);
gint i;
g_return_if_fail(PPG_IS_INSTRUMENT(instrument));
g_return_if_fail(name != NULL);
priv = instrument->priv;
for (i = 0; i < priv->factories->len; i++) {
factory = &g_array_index(priv->factories, PpgVisualizerFactory, i);
if (g_str_equal(factory->entry->name, name)) {
if ((factory_func = (gpointer)factory->entry->callback)) {
visualizer = factory_func(factory->user_data);
}
}
}
if (visualizer) {
g_signal_emit(instrument, signals[VISUALIZER_ADDED], 0, visualizer);
}
}
unsigned int IOFactory::findPlugins( const std::string &path )
{
boost::filesystem::path p( path );
if ( !exists( p ) ) {
LOG( Runtime, warning ) << util::MSubject( p ) << " not found";
return 0;
}
if ( !boost::filesystem::is_directory( p ) ) {
LOG( Runtime, warning ) << util::MSubject( p ) << " is no directory";
return 0;
}
LOG( Runtime, info ) << "Scanning " << util::MSubject( p ) << " for plugins";
boost::regex pluginFilter( std::string( "^" ) + DL_PREFIX + "isisImageFormat_" + "[[:word:]]+" + DL_SUFFIX + "$", boost::regex::perl | boost::regex::icase );
unsigned int ret = 0;
for ( boost::filesystem::directory_iterator itr( p ); itr != boost::filesystem::directory_iterator(); ++itr ) {
if ( boost::filesystem::is_directory( *itr ) )continue;
if ( boost::regex_match( itr->path().filename().string(), pluginFilter ) ) {
const std::string pluginName = itr->path().native();
#ifdef WIN32
HINSTANCE handle = LoadLibrary( pluginName.c_str() );
#else
void *handle = dlopen( pluginName.c_str(), RTLD_NOW );
#endif
if ( handle ) {
#ifdef WIN32
image_io::FileFormat* ( *factory_func )() = ( image_io::FileFormat * ( * )() )GetProcAddress( handle, "factory" );
#else
image_io::FileFormat* ( *factory_func )() = ( image_io::FileFormat * ( * )() )dlsym( handle, "factory" );
#endif
if ( factory_func ) {
FileFormatPtr io_class( factory_func(), _internal::pluginDeleter( handle, pluginName ) );
if ( registerFileFormat( io_class ) ) {
io_class->plugin_file = pluginName;
ret++;
} else {
LOG( Runtime, warning ) << "failed to register plugin " << util::MSubject( pluginName );
}
} else {
#ifdef WIN32
LOG( Runtime, warning )
<< "could not get format factory function from " << util::MSubject( pluginName );
FreeLibrary( handle );
#else
LOG( Runtime, warning )
<< "could not get format factory function from " << util::MSubject( pluginName ) << ":" << util::MSubject( dlerror() );
dlclose( handle );
#endif
}
} else
#ifdef WIN32
LOG( Runtime, warning ) << "Could not load library " << util::MSubject( pluginName );
#else
LOG( Runtime, warning ) << "Could not load library " << util::MSubject( pluginName ) << ":" << util::MSubject( dlerror() );
#endif
} else {
LOG( Runtime, verbose_info ) << "Ignoring " << *itr << " because it doesn't match " << pluginFilter.str();
}
}
return ret;
}
