diff options
Diffstat (limited to 'meta/packages/gstreamer/gstreamer-0.10.29/gstregistrybinary.c')
| -rw-r--r-- | meta/packages/gstreamer/gstreamer-0.10.29/gstregistrybinary.c | 487 |
1 files changed, 487 insertions, 0 deletions
diff --git a/meta/packages/gstreamer/gstreamer-0.10.29/gstregistrybinary.c b/meta/packages/gstreamer/gstreamer-0.10.29/gstregistrybinary.c new file mode 100644 index 0000000000..c1f3e71af6 --- /dev/null +++ b/meta/packages/gstreamer/gstreamer-0.10.29/gstregistrybinary.c @@ -0,0 +1,487 @@ +/* GStreamer + * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> + * 2000 Wim Taymans <wtay@chello.be> + * 2005 David A. Schleef <ds@schleef.org> + * + * gstregistryxml.c: GstRegistry 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. + */ + + +#include <gst/gstregistrybinary.h> + +/* +** Simple handy function to write a memory location to the registry cache file +*/ +inline static gboolean +gst_registry_binary_write(GstRegistry *registry, const void *mem, const ssize_t size) +{ + if (write(registry->cache_file, mem, size) != size) + { + GST_ERROR("Failed to write binary registry element: ptr=%p size=%u error=%s\n", + mem, size, strerror(errno)); + return FALSE; + } + return TRUE; +} + +/* +** Save features GstBinary style +*/ +static gboolean +gst_registry_binary_fill_feature(GList **list, GstPluginFeature *orig, GstBinaryPluginFeature *dest, const char *name) +{ + GstBinaryChunck *chk; + + if ((chk = calloc(1, sizeof (GstBinaryChunck))) == NULL) + return FALSE; + + chk->data = dest; + chk->size = sizeof (GstBinaryPluginFeature); + + *list = g_list_append(*list, chk); + + dest->rank = orig->rank; + if (!strncpy(dest->typename, name, GST_BINARY_REGISTRY_TYPENAME_TYPENAME_LEN) || + !strncpy(dest->name, orig->name, GST_BINARY_REGISTRY_TYPENAME_NAME_LEN)) + { + GST_ERROR("Failed to write binary registry feature"); + goto fail; + } + + if (GST_IS_ELEMENT_FACTORY(orig)) + { + GstElementFactory *factory = GST_ELEMENT_FACTORY(orig); + + if (!strncpy(dest->longname, factory->details.longname, GST_BINARY_REGISTRY_TYPENAME_LONGNAME_LEN) || + !strncpy(dest->class, factory->details.klass, GST_BINARY_REGISTRY_TYPENAME_CLASS_LEN) || + !strncpy(dest->description, factory->details.description, GST_BINARY_REGISTRY_TYPENAME_DESCRIPTION_LEN) || + !strncpy(dest->author, factory->details.author, GST_BINARY_REGISTRY_TYPENAME_AUTHOR_LEN)) + { + GST_ERROR("Failed to write binary registry feature"); + goto fail; + } + } + + dest->npadtemplates = dest->ninterfaces = dest->nuritypes = 0; + return TRUE; + + fail: + free(chk); + return FALSE; +} + + +/* +** Initialize the GstBinaryRegistryMagic, setting both our magic number and gstreamer major/minor version +*/ +inline static gboolean +gst_registry_binary_initialize_magic(GstBinaryRegistryMagic *m) +{ + if (!strncpy(m->magic, GST_MAGIC_BINARY_REGISTRY_STR, GST_MAGIC_BINARY_REGISTRY_LEN) || + !strncpy(m->version, GST_MAJORMINOR, GST_BINARY_REGISTRY_VERSION_LEN)) + { + GST_ERROR("Failed to write magic to the registry magic structure"); + return FALSE; + } + return TRUE; +} + +/* +** Check GstBinaryRegistryMagic validity. +** Return a pointer pointing right after the magic structure +*/ +static gchar * +gst_registry_binary_check_magic(gchar *in) +{ + GstBinaryRegistryMagic *m = (GstBinaryRegistryMagic *) in; + + if (m == NULL || m->magic == NULL || m->version == NULL) + { + GST_ERROR("Binary registry magic structure is broken"); + return NULL; + } + if (strncmp(m->magic, GST_MAGIC_BINARY_REGISTRY_STR, GST_MAGIC_BINARY_REGISTRY_LEN) != 0) + { + GST_ERROR("Binary registry magic is different : %02x%02x%02x%02x != %02x%02x%02x%02x", + GST_MAGIC_BINARY_REGISTRY_STR[0] & 0xff, GST_MAGIC_BINARY_REGISTRY_STR[1] & 0xff, + GST_MAGIC_BINARY_REGISTRY_STR[2] & 0xff, GST_MAGIC_BINARY_REGISTRY_STR[3] & 0xff, + m->magic[0] & 0xff, m->magic[1] & 0xff, m->magic[2] & 0xff, m->magic[3] & 0xff); + return NULL; + } + if (strncmp(m->version, GST_MAJORMINOR, GST_BINARY_REGISTRY_VERSION_LEN)) + { + GST_ERROR("Binary registry magic version is different : %s != %s", + GST_MAJORMINOR, m->version); + return NULL; + } + return (in + sizeof (GstBinaryRegistryMagic)); +} + +/* +** Adapt a GstPlugin to our GstBinaryPluginElement structure, and write it to the +** registry file. +*/ +static gboolean +gst_registry_binary_save_plugin(GList **list, GstRegistry *registry, GstPlugin *plugin) +{ + GstBinaryPluginElement *e; + GstBinaryChunck *chk; + GList *walk; + + if ((e = calloc(1, sizeof (GstBinaryPluginElement))) == NULL || + (chk = calloc(1, sizeof (GstBinaryChunck))) == NULL) + return FALSE; + + chk->data = e; + chk->size = sizeof (GstBinaryPluginElement); + *list = g_list_append(*list, chk); + + if (!strncpy(e->name, plugin->desc.name, GST_BINARY_REGISTRY_NAME_LEN) || + !strncpy(e->description, plugin->desc.description, GST_BINARY_REGISTRY_DESCRIPTION_LEN) || + !strncpy(e->filename, plugin->filename, _POSIX_PATH_MAX) || + !strncpy(e->version, plugin->desc.version, GST_BINARY_REGISTRY_VERSION_LEN) || + !strncpy(e->license, plugin->desc.license, GST_BINARY_REGISTRY_LICENSE_LEN) || + !strncpy(e->source, plugin->desc.source, GST_BINARY_REGISTRY_SOURCE_LEN) || + !strncpy(e->package, plugin->desc.package, GST_BINARY_REGISTRY_PACKAGE_LEN) || + !strncpy(e->origin, plugin->desc.origin, GST_BINARY_REGISTRY_ORIGIN_LEN)) + { + GST_DEBUG("Can't adapt GstPlugin to GstBinaryPluginElement"); + goto fail; + } + + e->size = plugin->file_size; + e->m32p = plugin->file_mtime; + + GList *ft_list = gst_registry_get_feature_list_by_plugin(registry, plugin->desc.name); + + for (walk = ft_list; walk; walk = g_list_next(walk), e->nfeatures++) + { + GstPluginFeature *curfeat = GST_PLUGIN_FEATURE (walk->data); + GstBinaryPluginFeature *newfeat; + const char *feat_name = g_type_name(G_OBJECT_TYPE(curfeat)); + + if ((newfeat = calloc(1, sizeof (GstBinaryPluginFeature))) == NULL) + goto fail; + + if (!feat_name || !gst_registry_binary_fill_feature(list, curfeat, newfeat, feat_name)) + { + GST_ERROR("Can't fill plugin feature, aborting."); + goto fail; + } + } + + GST_DEBUG("Found %d features in plugin \"%s\"\n", e->nfeatures, e->name); + return TRUE; + + fail: + free(chk); + free(e); + return FALSE; +} + +/* +** Write the cache to file. Part of the code was taken from gstregistryxml.c +*/ +gboolean +gst_registry_binary_write_cache(GstRegistry *registry, const char *location) +{ + GList *walk; + char *tmp_location; + GstBinaryRegistryMagic *magic; + GstBinaryChunck *magic_chunck; + GList *to_write = NULL; + + GST_INFO("Writing binary registry cache"); + + g_return_val_if_fail (GST_IS_REGISTRY (registry), FALSE); + tmp_location = g_strconcat (location, ".tmpXXXXXX", NULL); + registry->cache_file = g_mkstemp (tmp_location); + if (registry->cache_file == -1) + { + char *dir; + + /* oops, I bet the directory doesn't exist */ + dir = g_path_get_dirname (location); + g_mkdir_with_parents (dir, 0777); + g_free (dir); + + registry->cache_file = g_mkstemp (tmp_location); + } + + if (registry->cache_file == -1) + goto fail; + + if ((magic = calloc(1, sizeof (GstBinaryRegistryMagic))) == NULL || + !gst_registry_binary_initialize_magic(magic)) + goto fail; + + if ((magic_chunck = calloc(1, sizeof (GstBinaryChunck))) == NULL) + goto fail; + + magic_chunck->data = magic; + magic_chunck->size = sizeof (GstBinaryRegistryMagic); + to_write = g_list_append(to_write, magic_chunck); + + /* Iterate trough the list of plugins in the GstRegistry and adapt them to our structures */ + for (walk = g_list_last(registry->plugins); walk; walk = g_list_previous(walk)) + { + GstPlugin *plugin = GST_PLUGIN(walk->data); + + if (!plugin->filename) + continue; + + if (plugin->flags & GST_PLUGIN_FLAG_CACHED) + { + int ret; + struct stat statbuf; + + ret = g_stat (plugin->filename, &statbuf); + if ((ret = g_stat (plugin->filename, &statbuf)) < 0 || + plugin->file_mtime != statbuf.st_mtime || + plugin->file_size != statbuf.st_size) + continue; + } + + if (!gst_registry_binary_save_plugin(&to_write, registry, plugin)) + { + GST_ERROR("Can't write binary plugin information for \"%s\"", plugin->filename); + continue; /* Try anyway */ + } + } + + for (walk = g_list_first(to_write); walk; walk = g_list_next(walk)) + { + GstBinaryChunck *cur = walk->data; + + if (!gst_registry_binary_write(registry, cur->data, cur->size)) + { + free(cur->data); + free(cur); + g_list_free(to_write); + goto fail; + } + free(cur->data); + free(cur); + } + g_list_free(to_write); + + if (close(registry->cache_file) < 0) + { + GST_DEBUG("Can't close registry file : %s", strerror(errno)); + goto fail; + } + + if (g_file_test (tmp_location, G_FILE_TEST_EXISTS)) { +#ifdef WIN32 + remove (location); +#endif + rename (tmp_location, location); + } + + g_free (tmp_location); + return TRUE; + + fail: + g_free(tmp_location); + return FALSE; +} + +static GstPluginFeature* +gst_registry_binary_load_feature(GstBinaryPluginFeature *in) +{ + GstPluginFeature *feature; + GType type; + + if (!in->typename || !*(in->typename)) + return NULL; + + /* GST_INFO("Plugin feature typename : %s", in->typename);*/ + + if (!(type = g_type_from_name(in->typename))) + { + GST_ERROR("Unknown type from typename"); + return NULL; + } + feature = g_object_new (type, NULL); + + if (!feature) { + GST_ERROR("Can't create feature from type"); + return NULL; + } + + if (!GST_IS_PLUGIN_FEATURE (feature)) { + /* don't really know what it is */ + if (GST_IS_OBJECT (feature)) + gst_object_unref (feature); + else + g_object_unref (feature); + return NULL; + } + + feature->name = g_strdup(in->name); + feature->rank = in->rank; + + if (GST_IS_ELEMENT_FACTORY(feature)) + { + GstElementFactory *factory = GST_ELEMENT_FACTORY(feature); + + factory->details.longname = g_strdup(in->longname); + factory->details.klass = g_strdup(in->class); + factory->details.description = g_strdup(in->description); + factory->details.author = g_strdup(in->author); + + /* GST_INFO("Element factory : %s", factory->details.longname); */ + } + + GST_DEBUG("Added feature %p with name %s", feature, feature->name); + return feature; +} + +/* +** Make a new plugin from current GstBinaryPluginElement structure +** and save it to the GstRegistry. Return an offset to the next +** GstBinaryPluginElement structure. +*/ +static unsigned long +gst_registry_binary_get_binary_plugin(GstRegistry *registry, gchar *in) +{ + GstBinaryPluginElement *p = (GstBinaryPluginElement *) in; + GstPlugin *plugin = NULL; + GList *plugin_features = NULL; + GstBinaryPluginFeature *feat; + unsigned int i; + unsigned long offset; + + plugin = g_object_new (GST_TYPE_PLUGIN, NULL); + + plugin->flags |= GST_PLUGIN_FLAG_CACHED; + + plugin->desc.name = g_strdup(p->name); + plugin->desc.description= g_strdup(p->description); + plugin->filename = g_strdup(p->filename); + plugin->desc.version = g_strdup(p->version); + plugin->desc.license = g_strdup(p->license); + plugin->desc.source = g_strdup(p->source); + plugin->desc.package = g_strdup(p->package); + plugin->desc.origin = g_strdup(p->origin); + plugin->file_mtime = p->m32p; + plugin->file_size = p->size; + plugin->basename = g_path_get_basename (plugin->filename); + + if (plugin->file_mtime < 0 || plugin->file_size < 0) + { + GST_ERROR("Plugin time or file size is not valid !"); + g_free(plugin); + return -1; + } + + if (p->nfeatures < 0) + { + GST_ERROR("The number of feature structure is not valid !"); + gst_object_unref(plugin); + return -1; + } + + for (feat = (GstBinaryPluginFeature *) (in + sizeof (GstBinaryPluginElement)), i = 0; + i < p->nfeatures; i++, feat++) + { + GstPluginFeature *gstfeat; + + if ((gstfeat = gst_registry_binary_load_feature(feat)) == NULL) + { + g_list_free(plugin_features); + g_free(plugin); + GST_ERROR("Error while loading binary feature"); + return -1; + } + gstfeat->plugin_name = g_strdup(plugin->desc.name); + plugin_features = g_list_prepend(plugin_features, gstfeat); + } + + GST_DEBUG("Added plugin \"%s\" to global registry from binary registry", plugin->desc.name); + GList *g; + + gst_registry_add_plugin (registry, plugin); + for (g = plugin_features; g; g = g_list_next (g)) + gst_registry_add_feature (registry, GST_PLUGIN_FEATURE (g->data)); + /* g_list_free(plugin_features); */ + + offset = sizeof (GstBinaryPluginElement) + p->nfeatures * sizeof (GstBinaryPluginFeature); + return offset; +} + + +/* +** Read the cache and adapt it to fill GstRegistry +*/ +gboolean +gst_registry_binary_read_cache(GstRegistry *registry, const char *location) +{ + GMappedFile *mapped = NULL; + GTimer *timer = NULL; + gchar *contents = NULL; + gdouble seconds; + unsigned long offset, inc; + gsize size; + + /* make sure these types exist */ + GST_TYPE_ELEMENT_FACTORY; + GST_TYPE_TYPE_FIND_FACTORY; + GST_TYPE_INDEX_FACTORY; + + timer = g_timer_new (); + + if ((mapped = g_mapped_file_new(location, FALSE, NULL)) == NULL || + (contents = g_mapped_file_get_contents(mapped)) == NULL) + { + GST_ERROR("Can't load file : %s", strerror(errno)); + return FALSE; + } + if ((contents = gst_registry_binary_check_magic(contents)) == NULL) + { + GST_ERROR("Binary registry type not recognized (invalid magic)"); + g_mapped_file_free(mapped); + return FALSE; + } + + if ((size = g_mapped_file_get_length(mapped)) < sizeof (GstBinaryPluginElement)) + { + GST_INFO("No binary plugins structure to read"); + return TRUE; /* This is not really an error */ + } + + for (offset = inc = 0; (offset + sizeof (GstBinaryPluginElement)) < size && + (inc = gst_registry_binary_get_binary_plugin(registry, contents + offset)) > 0; + offset += inc) + ; /* May want in the future to do something here */ + if (inc < 0) + { + GST_DEBUG("Problem while reading binary registry"); + return FALSE; + } + + g_timer_stop (timer); + seconds = g_timer_elapsed (timer, NULL); + g_timer_destroy (timer); + + GST_INFO ("loaded %s in %f seconds", location, seconds); + + if (mapped) + g_mapped_file_free (mapped); + return TRUE; +} |