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tools/gst-inspect.c: Add --print-plugin-auto-install-info option to gst-inspect, so we can introspect plugin files an...

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Original commit message from CVS:
* tools/gst-inspect.c:
(print_plugin_automatic_install_info_codecs),
(print_plugin_automatic_install_info_protocols),
(print_plugin_automatic_install_info), (main):
Add --print-plugin-auto-install-info option to gst-inspect, so we can
introspect plugin files and get machine-parsable output that corresponds
to the last bit of the missing-plugin installer string (small gotcha:
doesn't take into account ranks).
This commit is contained in:
Tim-Philipp Müller 2007-01-11 14:16:23 +00:00
parent ebf0c9d353
commit 26b38870f9
2 changed files with 159 additions and 4 deletions
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11
ChangeLog
View file

@ -1,3 +1,14 @@
2007-01-11 Tim-Philipp Müller <tim at centricular dot net>
* tools/gst-inspect.c:
(print_plugin_automatic_install_info_codecs),
(print_plugin_automatic_install_info_protocols),
(print_plugin_automatic_install_info), (main):
Add --print-plugin-auto-install-info option to gst-inspect, so we can
introspect plugin files and get machine-parsable output that corresponds
to the last bit of the missing-plugin installer string (small gotcha:
doesn't take into account ranks).
2007-01-11 Stefan Kost <ensonic@users.sf.net>
* configure.ac:

152
tools/gst-inspect.c
View file

@ -1104,13 +1104,149 @@ print_element_info (GstElementFactory * factory, gboolean print_names)
return 0;
}
static void
print_plugin_automatic_install_info_codecs (GstElementFactory * factory)
{
GstPadDirection direction;
const gchar *type_name;
const gchar *klass;
const GList *static_templates, *l;
GstCaps *caps = NULL;
guint i, num;
klass = gst_element_factory_get_klass (factory);
g_return_if_fail (klass != NULL);
if (strstr (klass, "Codec/") == NULL)
return;
if (strstr (klass, "Demuxer") ||
strstr (klass, "Decoder") ||
strstr (klass, "Depay") || strstr (klass, "Parser")) {
type_name = "decoder";
direction = GST_PAD_SINK;
} else if (strstr (klass, "Muxer") ||
strstr (klass, "Encoder") || strstr (klass, "Pay")) {
type_name = "encoder";
direction = GST_PAD_SRC;
} else {
g_printerr ("Unhandled Codec klass: %s\n", klass);
return;
}
/* decoder/demuxer sink pads should always be static and there should only
* be one, the same applies to encoders/muxers and source pads */
static_templates = gst_element_factory_get_static_pad_templates (factory);
for (l = static_templates; l != NULL; l = l->next) {
GstStaticPadTemplate *tmpl = NULL;
tmpl = (GstStaticPadTemplate *) l->data;
if (tmpl->direction == direction) {
caps = gst_static_pad_template_get_caps (tmpl);
break;
}
}
if (caps == NULL) {
g_printerr ("Couldn't find static pad template for %s '%s'\n",
type_name, GST_PLUGIN_FEATURE_NAME (factory));
return;
}
caps = gst_caps_make_writable (caps);
num = gst_caps_get_size (caps);
for (i = 0; i < num; ++i) {
GstStructure *s;
gchar *s_str;
s = gst_caps_get_structure (caps, i);
/* remove fields that are almost always just MIN-MAX of some sort
* in order to make the caps look less messy */
gst_structure_remove_field (s, "pixel-aspect-ratio");
gst_structure_remove_field (s, "framerate");
gst_structure_remove_field (s, "channels");
gst_structure_remove_field (s, "width");
gst_structure_remove_field (s, "height");
gst_structure_remove_field (s, "rate");
gst_structure_remove_field (s, "depth");
gst_structure_remove_field (s, "clock-rate");
s_str = gst_structure_to_string (s);
g_print ("%s-%s\n", type_name, s_str);
g_free (s_str);
}
gst_caps_unref (caps);
}
static void
print_plugin_automatic_install_info_protocols (GstElementFactory * factory)
{
gchar **protocols, **p;
protocols = gst_element_factory_get_uri_protocols (factory);
if (protocols != NULL && *protocols != NULL) {
switch (gst_element_factory_get_uri_type (factory)) {
case GST_URI_SINK:
for (p = protocols; *p != NULL; ++p)
g_print ("urisink-%s\n", *p);
break;
case GST_URI_SRC:
for (p = protocols; *p != NULL; ++p)
g_print ("urisource-%s\n", *p);
break;
default:
break;
}
g_strfreev (protocols);
}
}
static void
print_plugin_automatic_install_info (GstPlugin * plugin)
{
const gchar *plugin_name;
GList *features, *l;
plugin_name = gst_plugin_get_name (plugin);
/* not interested in typefind factories, only element factories */
features = gst_registry_get_feature_list (gst_registry_get_default (),
GST_TYPE_ELEMENT_FACTORY);
for (l = features; l != NULL; l = l->next) {
GstPluginFeature *feature;
feature = GST_PLUGIN_FEATURE (l->data);
/* only interested in the ones that are in the plugin we just loaded */
if (g_str_equal (plugin_name, feature->plugin_name)) {
GstElementFactory *factory;
g_print ("element-%s\n", gst_plugin_feature_get_name (feature));
factory = GST_ELEMENT_FACTORY (feature);
print_plugin_automatic_install_info_protocols (factory);
print_plugin_automatic_install_info_codecs (factory);
}
}
g_list_foreach (features, (GFunc) gst_object_unref, NULL);
g_list_free (features);
}
int
main (int argc, char *argv[])
{
gboolean print_all = FALSE;
gboolean print_aii = FALSE;
GOptionEntry options[] = {
{"print-all", 'a', 0, G_OPTION_ARG_NONE, &print_all,
N_("Print all elements"), NULL},
{"print-plugin-auto-install-info", '\0', 0, G_OPTION_ARG_NONE, &print_aii,
N_("Print a machine-parsable list of features the specified plugin "
"provides.\n "
"Useful in connection with external automatic plugin "
"installation mechanisms"), NULL},
GST_TOOLS_GOPTION_VERSION,
{NULL}
};
@ -1167,8 +1303,12 @@ main (int argc, char *argv[])
/* if there is such a plugin, print out info */
if (plugin) {
print_plugin_info (plugin);
print_plugin_features (plugin);
if (print_aii) {
print_plugin_automatic_install_info (plugin);
} else {
print_plugin_info (plugin);
print_plugin_features (plugin);
}
} else {
GError *error = NULL;
@ -1176,8 +1316,12 @@ main (int argc, char *argv[])
plugin = gst_plugin_load_file (arg, &error);
if (plugin) {
print_plugin_info (plugin);
print_plugin_features (plugin);
if (print_aii) {
print_plugin_automatic_install_info (plugin);
} else {
print_plugin_info (plugin);
print_plugin_features (plugin);
}
} else {
g_print (_("Could not load plugin file: %s\n"), error->message);
g_error_free (error);