gst-inspect: print more details for typefind and tracer features

Print full details for typefind features. Print some of the available features
for tracers and add some todos for the ones we'd like to see.

tools/gst-inspect.c

@@ -30,6 +30,7 @@
 #define GLIB_DISABLE_DEPRECATION_WARNINGS
 
 #include "tools.h"
+#include <gst/gst_private.h>    /* for internal Factories */
 
 #include <string.h>
 #include <locale.h>
@@ -39,6 +40,9 @@ static char *_name = NULL;
 
 static int print_element_info (GstPluginFeature * feature,
     gboolean print_names);
+static int print_typefind_info (GstPluginFeature * feature,
+    gboolean print_names);
+static int print_tracer_info (GstPluginFeature * feature, gboolean print_names);
 
 /* *INDENT-OFF* */
 G_GNUC_PRINTF (1, 2)
@@ -937,6 +941,17 @@ print_blacklist (void)
   gst_plugin_list_free (plugins);
 }
 
+static void
+print_typefind_extensions (const gchar * const *extensions)
+{
+  guint i = 0;
+
+  while (extensions[i]) {
+    g_print ("%s%s", i > 0 ? ", " : "", extensions[i]);
+    i++;
+  }
+}
+
 static void
 print_element_list (gboolean print_all, gchar * ftypes)
 {
@@ -953,7 +968,6 @@ print_element_list (gboolean print_all, gchar * ftypes)
 
   }
 
-
   orig_plugins = plugins = gst_registry_get_plugin_list (gst_registry_get ());
   while (plugins) {
     GList *features, *orig_features;
@@ -1021,15 +1035,10 @@ print_element_list (gboolean print_all, gchar * ftypes)
 
         extensions = gst_type_find_factory_get_extensions (factory);
         if (extensions != NULL) {
-          guint i = 0;
+          if (!print_all) {
-
+            print_typefind_extensions (extensions);
-          while (extensions[i]) {
-            if (!print_all)
-              g_print ("%s%s", i > 0 ? ", " : "", extensions[i]);
-            i++;
-          }
-          if (!print_all)
             g_print ("\n");
+          }
         } else {
           if (!print_all)
             g_print ("no extensions\n");
@@ -1273,31 +1282,31 @@ print_feature_info (const gchar * feature_name, gboolean print_all)
 {
   GstPluginFeature *feature;
   GstRegistry *registry = gst_registry_get ();
+  int ret;
 
-  feature = gst_registry_find_feature (registry, feature_name,
+  if ((feature = gst_registry_find_feature (registry, feature_name,
-      GST_TYPE_ELEMENT_FACTORY);
+              GST_TYPE_ELEMENT_FACTORY))) {
-  if (feature) {
+    ret = print_element_info (feature, print_all);
-    int ret = print_element_info (feature, print_all);
+    goto handled;
-    gst_object_unref (feature);
-    return ret;
   }
-  /* FIXME implement other pretty print function for these */
+  if ((feature = gst_registry_find_feature (registry, feature_name,
-  feature = gst_registry_find_feature (registry, feature_name,
+              GST_TYPE_TYPE_FIND_FACTORY))) {
-      GST_TYPE_TYPE_FIND_FACTORY);
+    ret = print_typefind_info (feature, print_all);
-  if (feature) {
+    goto handled;
-    n_print ("%s: a typefind function\n", feature_name);
-    gst_object_unref (feature);
-    return 0;
   }
-  feature = gst_registry_find_feature (registry, feature_name,
+  if ((feature = gst_registry_find_feature (registry, feature_name,
-      GST_TYPE_TRACER_FACTORY);
+              GST_TYPE_TRACER_FACTORY))) {
-  if (feature) {
+    ret = print_tracer_info (feature, print_all);
-    n_print ("%s: a tracer module\n", feature_name);
+    goto handled;
-    gst_object_unref (feature);
-    return 0;
   }
 
+  /* TODO: handle DEVICE_PROVIDER_FACTORY */
+
   return -1;
+
+handled:
+  gst_object_unref (feature);
+  return ret;
 }
 
 static int
@@ -1351,10 +1360,119 @@ print_element_info (GstPluginFeature * feature, gboolean print_names)
   gst_object_unref (element);
   gst_object_unref (factory);
   g_free (_name);
-
   return 0;
 }
 
+static int
+print_typefind_info (GstPluginFeature * feature, gboolean print_names)
+{
+  GstTypeFindFactory *factory;
+  GstPlugin *plugin;
+  GstCaps *caps;
+  GstRank rank;
+  char s[20];
+  const gchar *const *extensions;
+
+  factory = GST_TYPE_FIND_FACTORY (gst_plugin_feature_load (feature));
+  if (!factory) {
+    g_print ("typefind plugin couldn't be loaded\n");
+    return -1;
+  }
+
+  if (print_names)
+    _name = g_strdup_printf ("%s: ", GST_OBJECT_NAME (factory));
+  else
+    _name = NULL;
+
+  n_print ("Factory Details:\n");
+  rank = gst_plugin_feature_get_rank (feature);
+  n_print ("  %-25s%s (%d)\n", "Rank", get_rank_name (s, rank), rank);
+  n_print ("  %-25s%s\n", "Name", GST_OBJECT_NAME (factory));
+  caps = gst_type_find_factory_get_caps (factory);
+  if (caps) {
+    gchar *caps_str = gst_caps_to_string (factory->caps);
+
+    n_print ("  %-25s%s\n", "Caps", caps_str);
+    g_free (caps_str);
+  }
+  extensions = gst_type_find_factory_get_extensions (factory);
+  if (extensions) {
+    n_print ("  %-25s", "Extensions");
+    print_typefind_extensions (extensions);
+    n_print ("\n");
+  }
+  n_print ("\n");
+
+  plugin = gst_plugin_feature_get_plugin (GST_PLUGIN_FEATURE (factory));
+  if (plugin) {
+    print_plugin_info (plugin);
+    gst_object_unref (plugin);
+  }
+
+  gst_object_unref (factory);
+  g_free (_name);
+  return 0;
+}
+
+static int
+print_tracer_info (GstPluginFeature * feature, gboolean print_names)
+{
+  GstTracerFactory *factory;
+  GstTracer *tracer;
+  GstPlugin *plugin;
+  gint maxlevel = 0;
+
+  factory = GST_TRACER_FACTORY (gst_plugin_feature_load (feature));
+  if (!factory) {
+    g_print ("tracer plugin couldn't be loaded\n");
+    return -1;
+  }
+
+  tracer = (GstTracer *) g_object_new (factory->type, NULL);
+  if (!tracer) {
+    gst_object_unref (factory);
+    g_print ("couldn't construct tracer for some reason\n");
+    return -1;
+  }
+
+  if (print_names)
+    _name = g_strdup_printf ("%s: ", GST_OBJECT_NAME (factory));
+  else
+    _name = NULL;
+
+  n_print ("Factory Details:\n");
+  n_print ("  %-25s%s\n", "Name", GST_OBJECT_NAME (factory));
+  n_print ("\n");
+
+  plugin = gst_plugin_feature_get_plugin (GST_PLUGIN_FEATURE (factory));
+  if (plugin) {
+    print_plugin_info (plugin);
+    gst_object_unref (plugin);
+  }
+
+  print_hierarchy (G_OBJECT_TYPE (tracer), 0, &maxlevel);
+  print_interfaces (G_OBJECT_TYPE (tracer));
+
+  /* TODO: list what hooks it registers
+   * - the data is available in gsttracerutils, we need to iterate the
+   *   _priv_tracers hashtable for each probe and then check the list of hooks
+   *  for each probe whether hook->tracer == tracer :/
+   */
+
+  /* TODO: list what records it emits
+   * - in class_init tracers can create GstTracerRecord instances
+   * - those only get logged right now and there is no association with the
+   *   tracer that created them
+   * - we'd need to add them to GstTracerFactory
+   *   gst_tracer_class_add_record (klass, record);
+   *   - needs work in gstregistrychunks.
+   */
+
+  gst_object_unref (tracer);
+  gst_object_unref (factory);
+  g_free (_name);
+  return 0;
+}
 
 static void
 print_plugin_automatic_install_info_codecs (GstElementFactory * factory)