/* GStreamer * Copyright (C) 1999,2000 Erik Walthinsen * 2000 Wim Taymans * * gstxml_registry.c: GstXMLRegistry object, support routines * * This library is free software; you can redistribute it and/or * modify it ulnder the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include #include #ifdef _MSC_VER #include #include #ifndef F_OK #define F_OK 0 #define W_OK 2 #define R_OK 4 #endif #ifndef S_ISREG #define S_ISREG(mode) ((mode)&_S_IFREG) #endif #ifndef S_ISDIR #define S_ISDIR(mode) ((mode)&_S_IFDIR) #endif #else /* _MSC_VER */ #ifdef HAVE_UNISTD_H #include #endif #include #endif #include #include #include #include #include #include #include #include "gstlibxmlregistry.h" #include #define BLOCK_SIZE 1024*10 #define CLASS(registry) GST_XML_REGISTRY_CLASS (G_OBJECT_GET_CLASS (registry)) enum { PROP_0, PROP_LOCATION }; static void gst_xml_registry_class_init (GstXMLRegistryClass * klass); static void gst_xml_registry_init (GstXMLRegistry * registry); static void gst_xml_registry_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_xml_registry_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static gboolean gst_xml_registry_load (GstRegistry * registry); static gboolean gst_xml_registry_save (GstRegistry * registry); static gboolean gst_xml_registry_rebuild (GstRegistry * registry); static void gst_xml_registry_get_perms_func (GstXMLRegistry * registry); static gboolean gst_xml_registry_open_func (GstXMLRegistry * registry, GstXMLRegistryMode mode); static gboolean gst_xml_registry_load_func (GstXMLRegistry * registry, gchar * data, gssize * size); static gboolean gst_xml_registry_save_func (GstXMLRegistry * registry, gchar * format, ...); static gboolean gst_xml_registry_close_func (GstXMLRegistry * registry); static GstRegistryReturn gst_xml_registry_load_plugin (GstRegistry * registry, GstPlugin * plugin); static GstRegistryClass *parent_class = NULL; /* static guint gst_xml_registry_signals[LAST_SIGNAL] = { 0 }; */ GType gst_xml_registry_get_type (void) { static GType xml_registry_type = 0; if (!xml_registry_type) { static const GTypeInfo xml_registry_info = { sizeof (GstXMLRegistryClass), NULL, NULL, (GClassInitFunc) gst_xml_registry_class_init, NULL, NULL, sizeof (GstXMLRegistry), 0, (GInstanceInitFunc) gst_xml_registry_init, NULL }; xml_registry_type = g_type_register_static (GST_TYPE_REGISTRY, "GstXMLRegistry", &xml_registry_info, 0); } return xml_registry_type; } static void gst_xml_registry_class_init (GstXMLRegistryClass * klass) { GObjectClass *gobject_class; GstRegistryClass *gstregistry_class; GstXMLRegistryClass *gstxmlregistry_class; gobject_class = (GObjectClass *) klass; gstregistry_class = (GstRegistryClass *) klass; gstxmlregistry_class = (GstXMLRegistryClass *) klass; parent_class = g_type_class_ref (GST_TYPE_REGISTRY); gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_xml_registry_get_property); gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_xml_registry_set_property); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_LOCATION, g_param_spec_string ("location", "Location", "Location of the registry file", NULL, G_PARAM_READWRITE)); gstregistry_class->load = GST_DEBUG_FUNCPTR (gst_xml_registry_load); gstregistry_class->save = GST_DEBUG_FUNCPTR (gst_xml_registry_save); gstregistry_class->rebuild = GST_DEBUG_FUNCPTR (gst_xml_registry_rebuild); gstregistry_class->load_plugin = GST_DEBUG_FUNCPTR (gst_xml_registry_load_plugin); gstxmlregistry_class->get_perms_func = GST_DEBUG_FUNCPTR (gst_xml_registry_get_perms_func); gstxmlregistry_class->open_func = GST_DEBUG_FUNCPTR (gst_xml_registry_open_func); gstxmlregistry_class->load_func = GST_DEBUG_FUNCPTR (gst_xml_registry_load_func); gstxmlregistry_class->save_func = GST_DEBUG_FUNCPTR (gst_xml_registry_save_func); gstxmlregistry_class->close_func = GST_DEBUG_FUNCPTR (gst_xml_registry_close_func); } static void gst_xml_registry_init (GstXMLRegistry * registry) { registry->location = NULL; } /** * gst_xml_registry_new: * @name: the name of the registry * @location: the location of the registry file * * Create a new xml registry with the given name and location. * * Returns: a new GstXMLRegistry with the given name an location. */ GstRegistry * gst_xml_registry_new (const gchar * name, const gchar * location) { GstXMLRegistry *xmlregistry; xmlregistry = GST_XML_REGISTRY (g_object_new (GST_TYPE_XML_REGISTRY, NULL)); g_object_set (G_OBJECT (xmlregistry), "location", location, NULL); GST_REGISTRY (xmlregistry)->name = g_strdup (name); return GST_REGISTRY (xmlregistry); } static void gst_xml_registry_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstXMLRegistry *registry; registry = GST_XML_REGISTRY (object); switch (prop_id) { case PROP_LOCATION: if (registry->open) { CLASS (object)->close_func (registry); g_return_if_fail (registry->open == FALSE); } if (registry->location) g_free (registry->location); registry->location = g_strdup (g_value_get_string (value)); GST_REGISTRY (registry)->flags = 0x0; if (CLASS (object)->get_perms_func) CLASS (object)->get_perms_func (registry); /* FIXME? (can't enable, because it's called before initialization is done) */ /* gst_xml_registry_load (GST_REGISTRY (registry)); */ break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_xml_registry_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstXMLRegistry *registry; registry = GST_XML_REGISTRY (object); switch (prop_id) { case PROP_LOCATION: g_value_set_string (value, g_strdup (registry->location)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /* this function returns the biggest of the path's mtime and ctime * mtime is updated through an actual write (data) * ctime is updated through changing inode information * so this function returns the last time *anything* changed to this path * it also sets the given boolean to TRUE if the given path is a directory */ static time_t get_time (const char *path, gboolean * is_dir) { struct stat statbuf; if (stat (path, &statbuf)) { *is_dir = FALSE; return 0; } if (is_dir) *is_dir = S_ISDIR (statbuf.st_mode); if (statbuf.st_mtime > statbuf.st_ctime) return statbuf.st_mtime; return statbuf.st_ctime; } #if defined(_MSC_VER) || defined(__MINGW32__) #define xmkdir(dirname) _mkdir (dirname) #else #define xmkdir(dirname) mkdir (dirname, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) #endif static gboolean make_dir (gchar * filename) { struct stat dirstat; gchar *dirname; if (strrchr (filename, '/') == NULL) return FALSE; dirname = g_strndup (filename, strrchr (filename, '/') - filename); if (stat (dirname, &dirstat) == -1 && errno == ENOENT) { if (xmkdir (dirname) != 0) { if (make_dir (dirname) != TRUE) { g_free (dirname); return FALSE; } else { if (xmkdir (dirname) != 0) { return FALSE; } } } } g_free (dirname); return TRUE; } static void gst_xml_registry_get_perms_func (GstXMLRegistry * registry) { gchar *dirname; /* if the dir does not exist, make it. if that can't be done, flags = 0x0. if the file can be appended to, it's writable. if it can then be read, it's readable. After that check if it exists. */ if (make_dir (registry->location) != TRUE) { /* we can't do anything with it, leave flags as 0x0 */ return; } dirname = g_path_get_dirname (registry->location); if (g_file_test (registry->location, G_FILE_TEST_EXISTS)) { GST_REGISTRY (registry)->flags |= GST_REGISTRY_EXISTS; } if (!access (dirname, W_OK)) { GST_REGISTRY (registry)->flags |= GST_REGISTRY_WRITABLE; } if (!access (dirname, R_OK)) { GST_REGISTRY (registry)->flags |= GST_REGISTRY_READABLE; } g_free (dirname); } /* return TRUE iff regtime is more recent than the times of all the .so files * in the plugin dirs; ie return TRUE if this path does not need to trigger * a rebuild of registry * * - if it's a directory, recurse on subdirs * - if it's a file * - if entry is not newer, return TRUE. * - if it's newer * - and it's a plugin, return FALSE * - otherwise return TRUE */ static gboolean plugin_times_older_than_recurse (gchar * path, time_t regtime) { DIR *dir; struct dirent *dirent; gboolean is_dir; gchar *new_path; time_t pathtime = get_time (path, &is_dir); if (is_dir) { dir = opendir (path); if (dir) { while ((dirent = readdir (dir))) { /* don't want to recurse in place or backwards */ if (strcmp (dirent->d_name, ".") && strcmp (dirent->d_name, "..")) { new_path = g_build_filename (path, dirent->d_name, NULL); if (!plugin_times_older_than_recurse (new_path, regtime)) { GST_CAT_INFO (GST_CAT_PLUGIN_LOADING, "path %s is more recent than registry time of %ld", new_path, (long) regtime); g_free (new_path); closedir (dir); return FALSE; } g_free (new_path); } } closedir (dir); } return TRUE; } /* it's a file */ if (pathtime <= regtime) { return TRUE; } /* it's a file, and it's more recent */ if (g_str_has_suffix (path, ".so") || g_str_has_suffix (path, ".dll")) { if (!gst_plugin_check_file (path, NULL)) return TRUE; /* it's a newer GStreamer plugin */ GST_CAT_INFO (GST_CAT_PLUGIN_LOADING, "%s looks like a plugin and is more recent than registry time of %ld", path, (long) regtime); return FALSE; } return TRUE; } /* return TRUE iff regtime is more recent than the times of all the .so files * in the plugin dirs; ie return TRUE if registry is up to date. */ static gboolean plugin_times_older_than (GList * paths, time_t regtime) { while (paths) { GST_CAT_LOG (GST_CAT_PLUGIN_LOADING, "comparing plugin times from %s with %ld", (gchar *) paths->data, (long) regtime); if (!plugin_times_older_than_recurse (paths->data, regtime)) return FALSE; paths = g_list_next (paths); } GST_CAT_LOG (GST_CAT_PLUGIN_LOADING, "everything's fine, no registry rebuild needed."); return TRUE; } static gboolean gst_xml_registry_open_func (GstXMLRegistry * registry, GstXMLRegistryMode mode) { GstRegistry *gst_registry; GList *paths; gst_registry = GST_REGISTRY (registry); paths = gst_registry->paths; GST_CAT_DEBUG (GST_CAT_GST_INIT, "opening registry %s", registry->location); g_return_val_if_fail (registry->open == FALSE, FALSE); /* if it doesn't exist, first try to build it, and check if it worked * if it's not readable, return false * if it's out of date, rebuild it */ if (mode == GST_XML_REGISTRY_READ) { if (!(gst_registry->flags & GST_REGISTRY_EXISTS)) { /* if it's not writable, then don't bother */ if (!(gst_registry->flags & GST_REGISTRY_WRITABLE)) { GST_CAT_INFO (GST_CAT_GST_INIT, "Registry isn't writable"); return FALSE; } GST_CAT_INFO (GST_CAT_GST_INIT, "Registry doesn't exist, trying to build..."); gst_registry_rebuild (gst_registry); gst_registry_save (gst_registry); /* FIXME: verify that the flags actually get updated ! */ if (!(gst_registry->flags & GST_REGISTRY_EXISTS)) { return FALSE; } } /* at this point we know it exists */ g_return_val_if_fail (gst_registry->flags & GST_REGISTRY_READABLE, FALSE); if (!plugin_times_older_than (paths, get_time (registry->location, NULL))) { if (gst_registry->flags & GST_REGISTRY_WRITABLE) { GST_CAT_INFO (GST_CAT_GST_INIT, "Registry out of date, rebuilding..."); gst_registry_rebuild (gst_registry); gst_registry_save (gst_registry); if (!plugin_times_older_than (paths, get_time (registry->location, NULL))) { GST_CAT_INFO (GST_CAT_GST_INIT, "Registry still out of date, something is wrong..."); return FALSE; } } else { GST_CAT_INFO (GST_CAT_GST_INIT, "Can't write to this registry and it's out of date, ignoring it"); return FALSE; } } GST_CAT_DEBUG (GST_CAT_GST_INIT, "opening registry %s for reading", registry->location); registry->regfile = fopen (registry->location, "r"); } else if (mode == GST_XML_REGISTRY_WRITE) { char *tmploc; int fd; g_return_val_if_fail (gst_registry->flags & GST_REGISTRY_WRITABLE, FALSE); tmploc = g_strconcat (registry->location, ".tmp", NULL); GST_CAT_DEBUG (GST_CAT_GST_INIT, "opening registry %s for writing", tmploc); if ((fd = open (tmploc, O_WRONLY | O_CREAT, 0644)) < 0) { g_free (tmploc); return FALSE; } g_free (tmploc); registry->regfile = fdopen (fd, "w"); } if (!registry->regfile) return FALSE; registry->open = TRUE; return TRUE; } static gboolean gst_xml_registry_load_func (GstXMLRegistry * registry, gchar * data, gssize * size) { *size = fread (data, 1, *size, registry->regfile); return TRUE; } static gboolean gst_xml_registry_save_func (GstXMLRegistry * registry, gchar * format, ...) { va_list var_args; va_start (var_args, format); vfprintf (registry->regfile, format, var_args); va_end (var_args); return TRUE; } static gboolean gst_xml_registry_close_func (GstXMLRegistry * registry) { char *tmploc; GST_CAT_DEBUG (GST_CAT_GST_INIT, "closing registry %s", registry->location); fclose (registry->regfile); /* If we opened for writing, rename our temporary file. */ tmploc = g_strconcat (registry->location, ".tmp", NULL); if (g_file_test (tmploc, G_FILE_TEST_EXISTS)) { #ifdef WIN32 remove (registry->location); #endif rename (tmploc, registry->location); } g_free (tmploc); registry->open = FALSE; return TRUE; } static void add_to_char_array (gchar *** array, gchar * value) { gchar **new; gchar **old = *array; gint i = 0; /* expensive, but cycles are cheap... */ if (old) while (old[i]) i++; new = g_new0 (gchar *, i + 2); new[i] = value; while (i > 0) { i--; new[i] = old[i]; } g_free (old); *array = new; } static gboolean read_string (xmlTextReaderPtr reader, gchar ** write_to) { int depth = xmlTextReaderDepth (reader); gboolean found = FALSE; if (*write_to) return FALSE; while (xmlTextReaderRead (reader) == 1) { if (xmlTextReaderDepth (reader) == depth) return found; if (xmlTextReaderNodeType (reader) == XML_READER_TYPE_TEXT) { if (found) return FALSE; *write_to = g_strdup (xmlTextReaderConstValue (reader)); found = TRUE; } } return FALSE; } static gboolean read_uint (xmlTextReaderPtr reader, guint * write_to) { int depth = xmlTextReaderDepth (reader); gboolean found = FALSE; if (*write_to) return FALSE; while (xmlTextReaderRead (reader) == 1) { if (xmlTextReaderDepth (reader) == depth) return found; if (xmlTextReaderNodeType (reader) == XML_READER_TYPE_TEXT) { gchar *ret; if (found) return FALSE; *write_to = strtol (xmlTextReaderConstValue (reader), &ret, 0); if (ret != NULL) return FALSE; found = TRUE; } } return FALSE; } static gboolean read_enum (xmlTextReaderPtr reader, GType enum_type, guint * write_to) { int depth = xmlTextReaderDepth (reader); gboolean found = FALSE; if (*write_to) return FALSE; while (xmlTextReaderRead (reader) == 1) { if (xmlTextReaderDepth (reader) == depth) return found; if (xmlTextReaderNodeType (reader) == XML_READER_TYPE_TEXT) { GEnumClass *enum_class; GEnumValue *value; if (found) return FALSE; enum_class = g_type_class_ref (enum_type); if (!enum_class) return FALSE; value = g_enum_get_value_by_nick (enum_class, xmlTextReaderConstValue (reader)); if (value) { *write_to = value->value; found = TRUE; } g_type_class_unref (enum_class); } } return FALSE; } static GstStaticPadTemplate * load_pad_template (xmlTextReaderPtr reader) { int ret; int depth = xmlTextReaderDepth (reader); gchar *name = NULL, *caps_str = NULL; guint direction = 0, presence = 0; while ((ret = xmlTextReaderRead (reader)) == 1) { if (xmlTextReaderDepth (reader) == depth) { GstStaticPadTemplate *template; template = g_new0 (GstStaticPadTemplate, 1); template->name_template = name; template->presence = presence; template->direction = direction; template->static_caps.string = caps_str; return template; } if (xmlTextReaderNodeType (reader) == XML_READER_TYPE_ELEMENT && xmlTextReaderDepth (reader) == depth + 1) { const gchar *tag = xmlTextReaderConstName (reader); if (g_str_equal (tag, "nametemplate")) { read_string (reader, &name); } else if (g_str_equal (tag, "direction")) { read_enum (reader, GST_TYPE_PAD_DIRECTION, &direction); } else if (g_str_equal (tag, "presence")) { read_enum (reader, GST_TYPE_PAD_PRESENCE, &presence); } else if (!strncmp (tag, "caps", 4)) { read_string (reader, &caps_str); } } } g_free (name); g_free (caps_str); return NULL; } static GstPluginFeature * load_feature (xmlTextReaderPtr reader) { int ret; int depth = xmlTextReaderDepth (reader); const gchar *feature_name = (const gchar *) xmlTextReaderGetAttribute (reader, BAD_CAST "typename"); GstPluginFeature *feature; GType type; if (!feature_name) return NULL; type = g_type_from_name (feature_name); if (!type) return NULL; feature = g_object_new (type, NULL); if (!feature) return NULL; if (!GST_IS_PLUGIN_FEATURE (feature)) { g_object_unref (feature); return NULL; } while ((ret = xmlTextReaderRead (reader)) == 1) { if (xmlTextReaderDepth (reader) == depth) return feature; if (xmlTextReaderNodeType (reader) == XML_READER_TYPE_ELEMENT && xmlTextReaderDepth (reader) == depth + 1) { const gchar *tag = xmlTextReaderConstName (reader); if (g_str_equal (tag, "name")) read_string (reader, &feature->name); if (g_str_equal (tag, "rank")) read_uint (reader, &feature->rank); if (GST_IS_ELEMENT_FACTORY (feature)) { GstElementFactory *factory = GST_ELEMENT_FACTORY (feature); if (g_str_equal (tag, "longname")) { read_string (reader, &factory->details.longname); } else if (g_str_equal (tag, "class")) { read_string (reader, &factory->details.klass); } else if (g_str_equal (tag, "description")) { read_string (reader, &factory->details.description); } else if (g_str_equal (tag, "author")) { read_string (reader, &factory->details.author); } else if (g_str_equal (tag, "uri_type")) { gchar *s = NULL; if (read_string (reader, &s)) { if (g_ascii_strncasecmp (s, "sink", 4) == 0) { factory->uri_type = GST_URI_SINK; } else if (g_ascii_strncasecmp (s, "source", 5) == 0) { factory->uri_type = GST_URI_SRC; } } } else if (g_str_equal (tag, "uri_protocol")) { gchar *s = NULL; if (read_string (reader, &s)) add_to_char_array (&factory->uri_protocols, s); } else if (g_str_equal (tag, "interface")) { gchar *s = NULL; if (read_string (reader, &s)) __gst_element_factory_add_interface (factory, s); } else if (g_str_equal (tag, "padtemplate")) { GstStaticPadTemplate *template = load_pad_template (reader); if (template) { GST_LOG ("adding template %s to factory %s", GST_PAD_TEMPLATE_NAME_TEMPLATE (template), GST_PLUGIN_FEATURE_NAME (feature)); __gst_element_factory_add_static_pad_template (factory, template); } } } else if (GST_IS_TYPE_FIND_FACTORY (feature)) { GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (feature); if (g_str_equal (tag, "extension")) { gchar *s = NULL; if (read_string (reader, &s)) add_to_char_array (&factory->extensions, s); } else if (g_str_equal (tag, "caps")) { gchar *s = NULL; if (read_string (reader, &s)) { factory->caps = gst_caps_from_string (s); g_free (s); } } } else if (GST_IS_SCHEDULER_FACTORY (feature)) { GstSchedulerFactory *factory = GST_SCHEDULER_FACTORY (feature); if (g_str_equal (tag, "longdesc")) read_string (reader, &factory->longdesc); } else if (GST_IS_INDEX_FACTORY (feature)) { GstIndexFactory *factory = GST_INDEX_FACTORY (feature); if (g_str_equal (tag, "longdesc")) read_string (reader, &factory->longdesc); } } } return NULL; } static GstPlugin * load_plugin (xmlTextReaderPtr reader) { int ret; GstPlugin *plugin = g_new0 (GstPlugin, 1); while ((ret = xmlTextReaderRead (reader)) == 1) { if (xmlTextReaderDepth (reader) == 1) { return plugin; } if (xmlTextReaderNodeType (reader) == XML_READER_TYPE_ELEMENT && xmlTextReaderDepth (reader) == 2) { const gchar *tag = xmlTextReaderConstName (reader); if (g_str_equal (tag, "name")) { if (!read_string (reader, &plugin->desc.name)) break; } else if (g_str_equal (tag, "description")) { if (!read_string (reader, &plugin->desc.description)) break; } else if (g_str_equal (tag, "filename")) { if (!read_string (reader, &plugin->filename)) break; } else if (g_str_equal (tag, "version")) { if (!read_string (reader, &plugin->desc.version)) break; } else if (g_str_equal (tag, "license")) { if (!read_string (reader, &plugin->desc.license)) break; } else if (g_str_equal (tag, "package")) { if (!read_string (reader, &plugin->desc.package)) break; } else if (g_str_equal (tag, "origin")) { if (!read_string (reader, &plugin->desc.origin)) break; } else if (g_str_equal (tag, "feature")) { GstPluginFeature *feature = load_feature (reader); if (feature) gst_plugin_add_feature (plugin, feature); } } } g_free (plugin); return NULL; } static GstPlugin * load_paths (xmlTextReaderPtr reader, GstXMLRegistry * registry) { int ret; GstPlugin *plugin = g_new0 (GstPlugin, 1); while ((ret = xmlTextReaderRead (reader)) == 1) { if (xmlTextReaderDepth (reader) == 1) { return plugin; } if (xmlTextReaderNodeType (reader) == XML_READER_TYPE_ELEMENT && xmlTextReaderDepth (reader) == 2) { const gchar *tag = xmlTextReaderConstName (reader); if (g_str_equal (tag, "path")) { gchar *s = NULL; if (read_string (reader, &s) && !g_list_find_custom (GST_REGISTRY (registry)->paths, s, (GCompareFunc) strcmp)) gst_registry_add_path (GST_REGISTRY (registry), s); g_free (s); } } } g_free (plugin); return NULL; } static gboolean gst_xml_registry_load (GstRegistry * registry) { GstXMLRegistry *xmlregistry; GTimer *timer; gdouble seconds; xmlTextReaderPtr reader; int ret; gboolean in_registry = FALSE; xmlregistry = GST_XML_REGISTRY (registry); /* make sure these types exist */ GST_TYPE_ELEMENT_FACTORY; GST_TYPE_SCHEDULER_FACTORY; GST_TYPE_TYPE_FIND_FACTORY; GST_TYPE_INDEX_FACTORY; timer = g_timer_new (); if (!CLASS (xmlregistry)->open_func (xmlregistry, GST_XML_REGISTRY_READ)) { g_timer_destroy (timer); return FALSE; } reader = xmlReaderForFd (fileno (xmlregistry->regfile), NULL, NULL, 0); if (!reader) { CLASS (xmlregistry)->close_func (xmlregistry); g_timer_destroy (timer); return FALSE; } while ((ret = xmlTextReaderRead (reader)) == 1) { if (xmlTextReaderDepth (reader) == 0) { in_registry = xmlTextReaderNodeType (reader) == XML_READER_TYPE_ELEMENT && g_str_equal ("GST-PluginRegistry", xmlTextReaderConstName (reader)); } else if (in_registry) { if (xmlTextReaderDepth (reader) == 1 && xmlTextReaderNodeType (reader) == XML_READER_TYPE_ELEMENT) { const gchar *tag = (const gchar *) xmlTextReaderConstName (reader); if (g_str_equal (tag, "plugin")) { GstPlugin *plugin = load_plugin (reader); if (plugin) { GST_DEBUG ("adding plugin %s with %d features", plugin->desc.name, plugin->numfeatures); gst_registry_add_plugin (GST_REGISTRY (xmlregistry), plugin); } } else if (g_str_equal (tag, "gst-plugin-paths")) { load_paths (reader, xmlregistry); } } } } xmlFreeTextReader (reader); if (ret != 0) { GST_ERROR ("parsing registry: %s (at %s)", registry->name, xmlregistry->location); CLASS (xmlregistry)->close_func (xmlregistry); g_timer_destroy (timer); return FALSE; } g_timer_stop (timer); seconds = g_timer_elapsed (timer, NULL); g_timer_destroy (timer); GST_INFO ("loaded %s in %f seconds (%s)", registry->name, seconds, xmlregistry->location); CLASS (xmlregistry)->close_func (xmlregistry); return TRUE; } static GstRegistryReturn gst_xml_registry_load_plugin (GstRegistry * registry, GstPlugin * plugin) { GError *error = NULL; GstPlugin *loaded_plugin; /* FIXME: add gerror support */ loaded_plugin = gst_plugin_load_file (plugin->filename, &error); if (!plugin) { if (error) { g_warning ("could not load plugin %s: %s", plugin->desc.name, error->message); g_error_free (error); } return GST_REGISTRY_PLUGIN_LOAD_ERROR; } else if (loaded_plugin != plugin) { g_critical ("how to remove plugins?"); } return GST_REGISTRY_OK; } /* * Save */ #define PUT_ESCAPED(tag,value) \ G_STMT_START{ \ const gchar *toconv = value; \ if (toconv) { \ gchar *v = g_markup_escape_text (toconv, strlen (toconv)); \ CLASS (xmlregistry)->save_func (xmlregistry, "<%s>%s\n", tag, v, tag); \ g_free (v); \ } \ }G_STMT_END #define PUT_ESCAPED_INT(tag,value) \ G_STMT_START{ \ gchar *save = g_strdup_printf ("%ld", (glong) value); \ CLASS (xmlregistry)->save_func (xmlregistry, "<%s>%s\n", tag, save, tag); \ g_free (save); \ }G_STMT_END static gboolean gst_xml_registry_save_caps (GstXMLRegistry * xmlregistry, const GstCaps * caps) { /* we copy the caps here so we can simplify them before saving. This is a lot * faster when loading them later on */ char *s; GstCaps *copy = gst_caps_copy (caps); gst_caps_do_simplify (copy); s = gst_caps_to_string (copy); gst_caps_unref (copy); PUT_ESCAPED ("caps", s); g_free (s); return TRUE; } static gboolean gst_xml_registry_save_pad_template (GstXMLRegistry * xmlregistry, GstStaticPadTemplate * template) { gchar *presence; PUT_ESCAPED ("nametemplate", template->name_template); CLASS (xmlregistry)->save_func (xmlregistry, "%s\n", (template->direction == GST_PAD_SINK ? "sink" : "src")); switch (template->presence) { case GST_PAD_ALWAYS: presence = "always"; break; case GST_PAD_SOMETIMES: presence = "sometimes"; break; case GST_PAD_REQUEST: presence = "request"; break; default: presence = "unknown"; break; } CLASS (xmlregistry)->save_func (xmlregistry, "%s\n", presence); if (template->static_caps.string) { CLASS (xmlregistry)->save_func (xmlregistry, "%s\n", template->static_caps.string); } return TRUE; } static gboolean gst_xml_registry_save_feature (GstXMLRegistry * xmlregistry, GstPluginFeature * feature) { PUT_ESCAPED ("name", feature->name); if (feature->rank > 0) { gint rank = feature->rank; CLASS (xmlregistry)->save_func (xmlregistry, "%d\n", rank); } if (GST_IS_ELEMENT_FACTORY (feature)) { GstElementFactory *factory = GST_ELEMENT_FACTORY (feature); GList *walk; PUT_ESCAPED ("longname", factory->details.longname); PUT_ESCAPED ("class", factory->details.klass); PUT_ESCAPED ("description", factory->details.description); PUT_ESCAPED ("author", factory->details.author); walk = factory->staticpadtemplates; while (walk) { GstStaticPadTemplate *template = walk->data; CLASS (xmlregistry)->save_func (xmlregistry, "\n"); gst_xml_registry_save_pad_template (xmlregistry, template); CLASS (xmlregistry)->save_func (xmlregistry, "\n"); walk = g_list_next (walk); } walk = factory->interfaces; while (walk) { PUT_ESCAPED ("interface", (gchar *) walk->data); walk = g_list_next (walk); } if (GST_URI_TYPE_IS_VALID (factory->uri_type)) { gchar **protocol; PUT_ESCAPED ("uri_type", factory->uri_type == GST_URI_SINK ? "sink" : "source"); g_assert (factory->uri_protocols); protocol = factory->uri_protocols; while (*protocol) { PUT_ESCAPED ("uri_protocol", *protocol); protocol++; } } } else if (GST_IS_TYPE_FIND_FACTORY (feature)) { GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (feature); gint i = 0; if (factory->caps) { gst_xml_registry_save_caps (xmlregistry, factory->caps); } if (factory->extensions) { while (factory->extensions[i]) { PUT_ESCAPED ("extension", factory->extensions[i]); i++; } } } else if (GST_IS_SCHEDULER_FACTORY (feature)) { PUT_ESCAPED ("longdesc", GST_SCHEDULER_FACTORY (feature)->longdesc); } else if (GST_IS_INDEX_FACTORY (feature)) { PUT_ESCAPED ("longdesc", GST_INDEX_FACTORY (feature)->longdesc); } return TRUE; } static gboolean gst_xml_registry_save_plugin (GstXMLRegistry * xmlregistry, GstPlugin * plugin) { GList *walk; PUT_ESCAPED ("name", plugin->desc.name); PUT_ESCAPED ("description", plugin->desc.description); PUT_ESCAPED ("filename", plugin->filename); PUT_ESCAPED ("version", plugin->desc.version); PUT_ESCAPED ("license", plugin->desc.license); PUT_ESCAPED ("package", plugin->desc.package); PUT_ESCAPED ("origin", plugin->desc.origin); walk = plugin->features; while (walk) { GstPluginFeature *feature = GST_PLUGIN_FEATURE (walk->data); CLASS (xmlregistry)->save_func (xmlregistry, "\n", g_type_name (G_OBJECT_TYPE (feature))); gst_xml_registry_save_feature (xmlregistry, feature); CLASS (xmlregistry)->save_func (xmlregistry, "\n"); walk = g_list_next (walk); } return TRUE; } static gboolean gst_xml_registry_save (GstRegistry * registry) { GList *walk; GstXMLRegistry *xmlregistry; g_return_val_if_fail (GST_IS_REGISTRY (registry), FALSE); g_return_val_if_fail (registry->flags & GST_REGISTRY_WRITABLE, FALSE); xmlregistry = GST_XML_REGISTRY (registry); if (!CLASS (xmlregistry)->open_func (xmlregistry, GST_XML_REGISTRY_WRITE)) { return FALSE; } CLASS (xmlregistry)->save_func (xmlregistry, "\n"); CLASS (xmlregistry)->save_func (xmlregistry, "\n"); walk = g_list_last (gst_registry_get_path_list (GST_REGISTRY (registry))); CLASS (xmlregistry)->save_func (xmlregistry, "\n"); while (walk) { CLASS (xmlregistry)->save_func (xmlregistry, ""); CLASS (xmlregistry)->save_func (xmlregistry, (gchar *) walk->data); CLASS (xmlregistry)->save_func (xmlregistry, "\n"); walk = g_list_previous (walk); } CLASS (xmlregistry)->save_func (xmlregistry, "\n"); walk = g_list_last (registry->plugins); while (walk) { GstPlugin *plugin = GST_PLUGIN (walk->data); CLASS (xmlregistry)->save_func (xmlregistry, "\n"); gst_xml_registry_save_plugin (xmlregistry, plugin); CLASS (xmlregistry)->save_func (xmlregistry, "\n"); walk = g_list_previous (walk); } CLASS (xmlregistry)->save_func (xmlregistry, "\n"); CLASS (xmlregistry)->close_func (xmlregistry); return TRUE; } static GList * gst_xml_registry_rebuild_recurse (GstXMLRegistry * registry, const gchar * directory) { GList *ret = NULL; gint dr_len, sf_len; if (g_file_test (directory, G_FILE_TEST_IS_DIR)) { GDir *dir = g_dir_open (directory, 0, NULL); if (dir) { const gchar *dirent; while ((dirent = g_dir_read_name (dir))) { gchar *dirname; if (*dirent == '=') { /* =build, =inst, etc. -- automake distcheck directories */ continue; } dirname = g_strjoin ("/", directory, dirent, NULL); ret = g_list_concat (ret, gst_xml_registry_rebuild_recurse (registry, dirname)); g_free (dirname); } g_dir_close (dir); } } else { dr_len = strlen (directory); sf_len = strlen (G_MODULE_SUFFIX); if (dr_len >= sf_len && strcmp (directory + dr_len - sf_len, G_MODULE_SUFFIX) == 0) { ret = g_list_prepend (ret, g_strdup (directory)); } } return ret; } static gboolean gst_xml_registry_rebuild (GstRegistry * registry) { GList *walk = NULL, *plugins = NULL, *prune = NULL; GError *error = NULL; guint length; GstPlugin *plugin; GstXMLRegistry *xmlregistry = GST_XML_REGISTRY (registry); walk = registry->paths; while (walk) { gchar *path = (gchar *) walk->data; GST_CAT_INFO (GST_CAT_PLUGIN_LOADING, "Rebuilding registry %p in directory %s...", registry, path); plugins = g_list_concat (plugins, gst_xml_registry_rebuild_recurse (xmlregistry, path)); walk = g_list_next (walk); } plugins = g_list_reverse (plugins); do { length = g_list_length (plugins); walk = plugins; while (walk) { g_assert (walk->data); plugin = gst_plugin_load_file ((gchar *) walk->data, NULL); if (plugin) { prune = g_list_prepend (prune, walk->data); gst_registry_add_plugin (registry, plugin); } walk = g_list_next (walk); } walk = prune; while (walk) { plugins = g_list_remove (plugins, walk->data); g_free (walk->data); walk = g_list_next (walk); } g_list_free (prune); prune = NULL; } while (g_list_length (plugins) != length); walk = plugins; while (walk) { if ((plugin = gst_plugin_load_file ((gchar *) walk->data, &error))) { g_warning ("Bizarre behavior: plugin %s actually loaded", (gchar *) walk->data); gst_registry_add_plugin (registry, plugin); } else { GST_CAT_INFO (GST_CAT_PLUGIN_LOADING, "Plugin %s failed to load: %s", (gchar *) walk->data, error->message); g_free (walk->data); g_error_free (error); error = NULL; } walk = g_list_next (walk); } return TRUE; }