gstreamer/tools/gst-compprep.c

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#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <locale.h>
#include <gst/gst.h>
GST_DEBUG_CATEGORY_STATIC (debug_compprep);
#define GST_CAT_DEFAULT debug_compprep
#define GST_COMPREG_FILE (GST_CACHE_DIR "/compreg.xml")
#ifdef HAVE_LIBXML2
#if LIBXML_VERSION >= 20600
void
handle_xmlerror (void *userData, xmlErrorPtr error)
{
g_print ("Error writing the completion registry: %s, %s\n", GST_COMPREG_FILE,
error->message);
}
#endif
#endif
int
main (int argc, char *argv[])
{
xmlDocPtr doc;
xmlNodePtr factorynode, padnode, argnode, optionnode;
GList *plugins, *features, *padtemplates;
const GList *pads;
GstElement *element;
GstPad *pad;
GstPadTemplate *padtemplate;
GParamSpec **property_specs;
guint num_properties, i;
setlocale (LC_ALL, "");
gst_init (&argc, &argv);
GST_DEBUG_CATEGORY_INIT (debug_compprep, "compprep", GST_DEBUG_BOLD,
"gst-compprep application");
doc = xmlNewDoc ("1.0");
doc->xmlRootNode = xmlNewDocNode (doc, NULL, "GST-CompletionRegistry", NULL);
plugins = g_list_copy (gst_registry_pool_plugin_list ());
while (plugins) {
GstPlugin *plugin;
plugin = (GstPlugin *) (plugins->data);
plugins = g_list_next (plugins);
features = g_list_copy (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_ELEMENT_FACTORY (feature))
continue;
factory = GST_ELEMENT_FACTORY (feature);
factorynode = xmlNewChild (doc->xmlRootNode, NULL, "element", NULL);
xmlNewChild (factorynode, NULL, "name",
GST_PLUGIN_FEATURE_NAME (factory));
element = gst_element_factory_create (factory, NULL);
GST_DEBUG ("adding factory %s", GST_PLUGIN_FEATURE_NAME (factory));
if (element == NULL) {
GST_ERROR ("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 = element->pads;
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_URI) {
xmlNewChild (argnode, NULL, "filename", NULL);
} else if (G_IS_PARAM_SPEC_ENUM (param) == G_TYPE_ENUM) {
GEnumValue *values;
gint j;
values = G_ENUM_CLASS (g_type_class_ref (param->value_type))->values;
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);
}
}
}
}
}
#ifdef HAVE_LIBXML2
#if LIBXML_VERSION >= 20600
xmlSetStructuredErrorFunc (NULL, handle_xmlerror);
#endif
xmlSaveFormatFile (GST_COMPREG_FILE, doc, 1);
#else
xmlSaveFile (GST_COMPREG_FILE, doc);
#endif
return 0;
}