Example #1
0
EffectManager::EffectManager(Backend *backend)
        : QObject(backend)
        , m_backend(backend)
{
    GList* factoryList = gst_registry_get_feature_list(gst_registry_get_default (), GST_TYPE_ELEMENT_FACTORY);
    QString name, klass, description, author;
    for (GList* iter = g_list_first(factoryList) ; iter != NULL ; iter = g_list_next(iter)) {
        GstPluginFeature *feature = GST_PLUGIN_FEATURE(iter->data);
        klass = gst_element_factory_get_klass(GST_ELEMENT_FACTORY(feature));
        if ( klass == "Filter/Effect/Audio" ) {
            name =  GST_PLUGIN_FEATURE_NAME(feature);

            // These plugins simply make no sense to the frontend:
            // "audiorate" Should be internal
            // "volume" not needed
            // "equalizer-nbands" not really useful at the moment

            // These plugins simply don't work or have major stability issues:
            // "iir" Does not seem to do much at the moment
            // "audioinvert" Only works for some streams, should be invesigated
            // "lpwsinc" Crashes for large values of filter kernel
            // "name" Crashes for large values of filter kernel
            
            // Seems to be working, but not well tested:
            // name == "rglimiter" Seems functional
            // name == "rgvolume" Seems to be working

            QString pluginString = qgetenv("PHONON_GST_ALL_EFFECTS");
            bool acceptAll = pluginString.toInt();

            if (acceptAll 
                // Plugins that have been accepted so far
                 || name == "audiopanorama" 
                 || name == "audioamplify" 
                 || name == "audiodynamic" 
                 || name == "equalizer-10bands" 
                 || name == "speed") 
                {
                    description = gst_element_factory_get_description (GST_ELEMENT_FACTORY(feature));
                    author = gst_element_factory_get_author (GST_ELEMENT_FACTORY(feature));
                    EffectInfo *effect = new EffectInfo(name, description, author);
                    m_audioEffectList.append(effect);
            }
        }
    }
    g_list_free(factoryList);
}
static VALUE
get_author(VALUE self)
{
    return CSTR2RVAL(gst_element_factory_get_author(SELF(self)));
}
Example #3
0
EffectManager::EffectManager(Backend *backend)
        : QObject(backend)
        , m_backend(backend)
{
    GList *factoryList = gst_registry_get_feature_list(gst_registry_get(), GST_TYPE_ELEMENT_FACTORY);

    QString name;
    QString klass;
    QString description;
    QString author;
    for (GList* iter = g_list_first(factoryList); iter != NULL ; iter = g_list_next(iter)) {
        GstPluginFeature *feature = GST_PLUGIN_FEATURE(iter->data);
        klass = gst_element_factory_get_klass(GST_ELEMENT_FACTORY(feature));
        if (klass == QLatin1String("Filter/Effect/Audio")) {
            name = GST_OBJECT_NAME(feature);

            // These plugins simply make no sense to the frontend:
            // "audiorate" Should be internal
            // "volume" not needed
            // "equalizer-nbands" not really useful at the moment

            // These plugins simply don't work or have major stability issues:
            // "iir" Does not seem to do much at the moment
            // "audioinvert" Only works for some streams, should be invesigated
            // "lpwsinc" Crashes for large values of filter kernel
            // "name" Crashes for large values of filter kernel

            // Seems to be working, but not well tested:
            // name == "rglimiter" Seems functional
            // name == "rgvolume" Seems to be working

            QString pluginString = qgetenv("PHONON_GST_ALL_EFFECTS");
            bool acceptAll = pluginString.toInt();

            if (acceptAll
                // Plugins that have been accepted so far
                 || name == QLatin1String("audiopanorama")
                 || name == QLatin1String("audioamplify")
                 || name == QLatin1String("audiodynamic")
                 || name == QLatin1String("equalizer-10bands")
                 || name == QLatin1String("speed"))
                {
                    description = gst_element_factory_get_description(GST_ELEMENT_FACTORY(feature));
                    author = gst_element_factory_get_author(GST_ELEMENT_FACTORY(feature));
                    EffectInfo *effect = new EffectInfo(name, description, author);
                    m_audioEffectList.append(effect);

#ifdef __GNUC__
#warning TODO - get rid of equalizer name mapping (also see audioeffect.cpp)
#endif
                    // Map the GStreamer name to the name used by Xine, to allow
                    // API consumers that think KEqualizer is a persistant name
                    // to have a working equalizer with GStreamer too (e.g. Amarok).
                    if (name == QLatin1String("equalizer-10bands")) {
                        m_audioEffectList.append(new EffectInfo(
                                                     QLatin1String("KEqualizer"),
                                                     QLatin1String("Compatibility effect. Do not use in new software!"),
                                                     author));
                    }
            }
        }
    }
    gst_plugin_feature_list_free(factoryList);
}