gstreamer/tools/gstreamer-compprep.c

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#include <gst/gst.h>
#include "config.h"
int main(int argc,char *argv[]) {
xmlDocPtr doc;
xmlNodePtr factorynode, padnode, argnode, optionnode;
GList *plugins, *features, *padtemplates, *pads;
GstElement *element;
GstPad *pad;
GstPadTemplate *padtemplate;
GParamSpec **property_specs;
gint num_properties,i;
gst_debug_set_categories(0);
gst_info_set_categories(0);
gst_init(&argc,&argv);
doc = xmlNewDoc("1.0");
doc->xmlRootNode = xmlNewDocNode(doc, NULL, "GST-CompletionRegistry", NULL);
plugins = gst_plugin_get_list();
while (plugins) {
GstPlugin *plugin;
plugin = (GstPlugin *)(plugins->data);
plugins = g_list_next (plugins);
features = gst_plugin_get_feature_list(plugin);
while (features) {
GstPluginFeature *feature;
GstElementFactory *factory;
feature = GST_PLUGIN_FEATURE (features->data);
features = g_list_next (features);
if (!GST_IS_ELEMENTFACTORY (feature))
continue;
factory = GST_ELEMENTFACTORY (feature);
factorynode = xmlNewChild (doc->xmlRootNode, NULL, "element", NULL);
xmlNewChild (factorynode, NULL, "name", gst_object_get_name (GST_OBJECT (factory)));
element = gst_elementfactory_create(factory,"element");
if (element == NULL) {
fprintf(stderr,"couldn't construct element from factory %s\n",
gst_object_get_name (GST_OBJECT (factory)));
return 1;
}
/* write out the padtemplates */
padtemplates = factory->padtemplates;
while (padtemplates) {
padtemplate = (GstPadTemplate *)(padtemplates->data);
padtemplates = g_list_next (padtemplates);
if (padtemplate->direction == GST_PAD_SRC)
padnode = xmlNewChild (factorynode, NULL, "srcpadtemplate", padtemplate->name_template);
else if (padtemplate->direction == GST_PAD_SINK)
padnode = xmlNewChild (factorynode, NULL, "sinkpadtemplate", padtemplate->name_template);
}
pads = gst_element_get_pad_list (element);
while (pads) {
pad = (GstPad *)(pads->data);
pads = g_list_next (pads);
if (GST_PAD_DIRECTION(pad) == GST_PAD_SRC)
padnode = xmlNewChild (factorynode, NULL, "srcpad", GST_PAD_NAME(pad));
else if (GST_PAD_DIRECTION(pad) == GST_PAD_SINK)
padnode = xmlNewChild (factorynode, NULL, "sinkpad", GST_PAD_NAME(pad));
}
/* write out the args */
property_specs = g_object_class_list_properties(G_OBJECT_GET_CLASS (element), &num_properties);
for (i=0;i<num_properties;i++) {
GParamSpec *param = property_specs[i];
argnode = xmlNewChild (factorynode, NULL, "argument", param->name);
if (param->value_type == GST_TYPE_FILENAME) {
xmlNewChild (argnode, NULL, "filename", NULL);
} else if (G_IS_PARAM_SPEC_ENUM (param) == G_TYPE_ENUM) {
GEnumValue *values;
gint j;
#ifdef USE_GLIB2
values = G_ENUM_CLASS (g_type_class_ref (param->value_type))->values;
#else
values = gtk_type_enum_get_values (param->value_type);
#endif
for (j=0;values[j].value_name;j++) {
gchar *value = g_strdup_printf("%d",values[j].value);
optionnode = xmlNewChild (argnode, NULL, "option", value);
xmlNewChild (optionnode, NULL, "value_nick", values[j].value_nick);
g_free(value);
}
}
}
}
}
xmlSaveFile(GST_CONFIG_DIR "/compreg.xml",doc);
return 0;
}