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gstreamer/gst/registries/gstlibxmlregistry.c
Wim Taymans e1aeec6d77 Removed plugable schedulers. 
Original commit message from CVS:
Removed plugable schedulers.
Removed Scheduler/Manager from elements.
Removed gsttypes.h, rearranged includes.
Removed dependency pad<->element, element<>pipeline, and
various others,  fix includes.
implement gst_pad_get_parent() with gst_object_get_parent()
Make GstTask sefcontained.
Fix _get_state() on GstBin, it did not return ASYNC with a 0
timeout.
Fix endless loop in iterator_fold_with_resync.
2005-07-18 12:49:53 +00:00

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* 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 <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <fcntl.h>
#ifdef _MSC_VER
#include <sys/utime.h>
#include <io.h>
#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 <unistd.h>
#endif
#include <utime.h>
#endif
#include <gst/gst_private.h>
#include <gst/gstelement.h>
#include <gst/gsttypefind.h>
#include <gst/gsturi.h>
#include <gst/gstinfo.h>
#include <gst/gstenumtypes.h>
#include "gstlibxmlregistry.h"
#include <libxml/xmlreader.h>
#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;
}
/* takes ownership of given value */
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;
}
/* read a string and store the result in *write_to.
* return whether or not *write_to was set to a newly allocated string
* FIXME: return values aren't actually checked, and in those failure cases
* (that currently aren't triggered) cleanup is not done correctly
*/
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 ((gchar *) 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 ((char *) 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,
(gchar *) 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 we're back at our depth, we have all info, and can return
* the completely parsed template */
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 = (gchar *) 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);
xmlChar *feature_name =
xmlTextReaderGetAttribute (reader, BAD_CAST "typename");
GstPluginFeature *feature;
GType type;
if (!feature_name)
return NULL;
type = g_type_from_name ((gchar *) feature_name);
xmlFree (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 = (gchar *) 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;
}
g_free (s);
}
} 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);
g_free (s);
}
} else if (g_str_equal (tag, "padtemplate")) {
GstStaticPadTemplate *template = load_pad_template (reader);
if (template) {
GST_LOG ("adding template %s to factory %s",
template->name_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_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 = (gchar *) 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 void
load_paths (xmlTextReaderPtr reader, GstXMLRegistry * registry)
{
int ret;
while ((ret = xmlTextReaderRead (reader)) == 1) {
if (xmlTextReaderDepth (reader) == 1) {
return;
}
if (xmlTextReaderNodeType (reader) == XML_READER_TYPE_ELEMENT &&
xmlTextReaderDepth (reader) == 2) {
const gchar *tag = (gchar *) 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);
}
}
}
return;
}
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_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_CAT_DEBUG (GST_CAT_PLUGIN_LOADING,
"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</%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</%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, "<direction>%s</direction>\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, "<presence>%s</presence>\n",
presence);
if (template->static_caps.string) {
CLASS (xmlregistry)->save_func (xmlregistry, "<caps>%s</caps>\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, "<rank>%d</rank>\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, "<padtemplate>\n");
gst_xml_registry_save_pad_template (xmlregistry, template);
CLASS (xmlregistry)->save_func (xmlregistry, "</padtemplate>\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_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, "<feature typename=\"%s\">\n",
g_type_name (G_OBJECT_TYPE (feature)));
gst_xml_registry_save_feature (xmlregistry, feature);
CLASS (xmlregistry)->save_func (xmlregistry, "</feature>\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, "<?xml version=\"1.0\"?>\n");
CLASS (xmlregistry)->save_func (xmlregistry, "<GST-PluginRegistry>\n");
walk = g_list_last (gst_registry_get_path_list (GST_REGISTRY (registry)));
CLASS (xmlregistry)->save_func (xmlregistry, "<gst-plugin-paths>\n");
while (walk) {
CLASS (xmlregistry)->save_func (xmlregistry, "<path>");
CLASS (xmlregistry)->save_func (xmlregistry, (gchar *) walk->data);
CLASS (xmlregistry)->save_func (xmlregistry, "</path>\n");
walk = g_list_previous (walk);
}
CLASS (xmlregistry)->save_func (xmlregistry, "</gst-plugin-paths>\n");
walk = g_list_last (registry->plugins);
while (walk) {
GstPlugin *plugin = GST_PLUGIN (walk->data);
CLASS (xmlregistry)->save_func (xmlregistry, "<plugin>\n");
gst_xml_registry_save_plugin (xmlregistry, plugin);
CLASS (xmlregistry)->save_func (xmlregistry, "</plugin>\n");
walk = g_list_previous (walk);
}
CLASS (xmlregistry)->save_func (xmlregistry, "</GST-PluginRegistry>\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;
}
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