/* GStreamer Editing Services Pitivi Formatter * Copyright (C) 2011-2012 Mathieu Duponchelle * * This library is free software; you can redistribute it and/or * modify it under 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ /** * SECTION: ges-pitivi-formatter * @short_description: A formatter for the PiTiVi project file format * * This is a legacy format and you should avoid to use it. The formatter * is really not in good shape and is deprecated. * * Deprecated: 1.0 */ #include #include #include #include #include #include #include #include "ges-internal.h" #include /* The PiTiVi etree formatter is 0.1 we set GES one to 0.2 */ #define VERSION "0.2" #define DOUBLE_VERSION 0.2 G_DEFINE_TYPE (GESPitiviFormatter, ges_pitivi_formatter, GES_TYPE_FORMATTER); #undef GST_CAT_DEFAULT GST_DEBUG_CATEGORY_STATIC (ges_pitivi_formatter_debug); #define GST_CAT_DEFAULT ges_pitivi_formatter_debug typedef struct SrcMapping { gchar *id; GESClip *clip; guint priority; GList *track_element_ids; } SrcMapping; struct _GESPitiviFormatterPrivate { xmlXPathContextPtr xpathCtx; /* {"sourceId" : {"prop": "value"}} */ GHashTable *sources_table; /* Used as a set of the uris */ GHashTable *source_uris; /* {trackId: {"factory_ref": factoryId, ""} * if effect: * {"factory_ref": "effect", * "effect_name": name * "effect_props": {"propname": value}}} */ GHashTable *track_elements_table; /* {factory-ref: [track-object-ref-id,...]} */ GHashTable *clips_table; /* {layerPriority: layer} */ GHashTable *layers_table; GESTimeline *timeline; GESTrack *tracka, *trackv; /* List the Clip that haven't been loaded yet */ GList *sources_to_load; /* Saving context */ /* {factory_id: uri} */ GHashTable *saving_source_table; guint nb_sources; }; static void list_table_destroyer (gpointer key, gpointer value, void *unused) { g_list_foreach (value, (GFunc) g_free, NULL); g_list_free (value); } static gboolean pitivi_can_load_uri (GESFormatter * dummy_instance, const gchar * uri, GError ** error) { xmlDocPtr doc; gboolean ret = TRUE; xmlXPathObjectPtr xpathObj; xmlXPathContextPtr xpathCtx; if (!(doc = xmlParseFile (uri))) { GST_ERROR ("The xptv file for uri %s was badly formed or did not exist", uri); return FALSE; } xpathCtx = xmlXPathNewContext (doc); xpathObj = xmlXPathEvalExpression ((const xmlChar *) "/pitivi", xpathCtx); if (!xpathObj || !xpathObj->nodesetval || xpathObj->nodesetval->nodeNr == 0) ret = FALSE; xmlFreeDoc (doc); xmlXPathFreeObject (xpathObj); xmlXPathFreeContext (xpathCtx); return ret; } /* Project loading functions */ /* Return: a GHashTable containing: * {attr: value} */ static GHashTable * get_nodes_infos (xmlNodePtr node) { xmlAttr *cur_attr; GHashTable *props_table; gchar *name, *value; props_table = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, NULL); for (cur_attr = node->properties; cur_attr; cur_attr = cur_attr->next) { name = (gchar *) cur_attr->name; value = (gchar *) xmlGetProp (node, cur_attr->name); g_hash_table_insert (props_table, g_strdup (name), g_strdup (value)); xmlFree (value); } return props_table; } static gboolean create_tracks (GESFormatter * self) { GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv; GList *tracks = NULL; tracks = ges_timeline_get_tracks (self->timeline); GST_DEBUG ("Creating tracks, current number of tracks %d", g_list_length (tracks)); if (tracks) { GList *tmp = NULL; GESTrack *track; for (tmp = tracks; tmp; tmp = tmp->next) { track = tmp->data; if (track->type == GES_TRACK_TYPE_AUDIO) { priv->tracka = track; } else { priv->trackv = track; } } g_list_foreach (tracks, (GFunc) gst_object_unref, NULL); g_list_free (tracks); return TRUE; } priv->tracka = GES_TRACK (ges_audio_track_new ()); priv->trackv = GES_TRACK (ges_video_track_new ()); if (!ges_timeline_add_track (self->timeline, priv->trackv)) { return FALSE; } if (!ges_timeline_add_track (self->timeline, priv->tracka)) { return FALSE; } return TRUE; } static void parse_metadatas (GESFormatter * self) { guint i, size; xmlNodePtr node; xmlAttr *cur_attr; xmlNodeSetPtr nodes; xmlXPathObjectPtr xpathObj; GESMetaContainer *metacontainer = GES_META_CONTAINER (self->project); xpathObj = xmlXPathEvalExpression ((const xmlChar *) "/pitivi/metadata", GES_PITIVI_FORMATTER (self)->priv->xpathCtx); nodes = xpathObj->nodesetval; size = (nodes) ? nodes->nodeNr : 0; for (i = 0; i < size; i++) { node = nodes->nodeTab[i]; for (cur_attr = node->properties; cur_attr; cur_attr = cur_attr->next) { ges_meta_container_set_string (metacontainer, (gchar *) cur_attr->name, (gchar *) xmlGetProp (node, cur_attr->name)); } } } static void list_sources (GESFormatter * self) { GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv; xmlXPathObjectPtr xpathObj; GHashTable *table; int size, j; gchar *id, *filename; xmlNodeSetPtr nodes; xpathObj = xmlXPathEvalExpression ((const xmlChar *) "/pitivi/factories/sources/source", priv->xpathCtx); nodes = xpathObj->nodesetval; size = (nodes) ? nodes->nodeNr : 0; for (j = 0; j < size; ++j) { table = get_nodes_infos (nodes->nodeTab[j]); id = (gchar *) g_hash_table_lookup (table, (gchar *) "id"); filename = (gchar *) g_hash_table_lookup (table, (gchar *) "filename"); g_hash_table_insert (priv->sources_table, g_strdup (id), table); g_hash_table_insert (priv->source_uris, g_strdup (filename), g_strdup (filename)); if (self->project) ges_project_create_asset (self->project, filename, GES_TYPE_URI_CLIP); } xmlXPathFreeObject (xpathObj); } static gboolean parse_track_elements (GESFormatter * self) { GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv; xmlXPathObjectPtr xpathObj; xmlNodeSetPtr nodes; int size, j; gchar *id, *fac_ref; GHashTable *table = NULL, *effect_table = NULL; xmlNode *first_child; gchar *media_type; /* FIXME Make this whole function cleaner starting from * "/pitivi/timeline/tracks/track/stream" and descending * into the children. */ xpathObj = xmlXPathEvalExpression ((const xmlChar *) "/pitivi/timeline/tracks/track/track-objects/track-object", priv->xpathCtx); if (xpathObj == NULL) { GST_DEBUG ("No track object found"); return FALSE; } nodes = xpathObj->nodesetval; size = (nodes) ? nodes->nodeNr : 0; for (j = 0; j < size; ++j) { xmlNodePtr node = nodes->nodeTab[j]; table = get_nodes_infos (nodes->nodeTab[j]); id = (gchar *) g_hash_table_lookup (table, (gchar *) "id"); first_child = nodes->nodeTab[j]->children->next; fac_ref = (gchar *) xmlGetProp (first_child, (xmlChar *) "id"); /* We check if the first child is "effect" */ if (!g_strcmp0 ((gchar *) first_child->name, (gchar *) "effect")) { xmlChar *effect_name; xmlNodePtr fact_node = first_child->children->next; /* We have a node called "text" in between thus ->next->next */ xmlNodePtr elem_props_node = fact_node->next->next; effect_name = xmlGetProp (fact_node, (xmlChar *) "name"); g_hash_table_insert (table, g_strdup ((gchar *) "effect_name"), g_strdup ((gchar *) effect_name)); xmlFree (effect_name); /* We put the effects properties in an hacktable (Lapsus is on :) */ effect_table = get_nodes_infos (elem_props_node); g_hash_table_insert (table, g_strdup ((gchar *) "fac_ref"), g_strdup ("effect")); xmlFree (fac_ref); } else { g_hash_table_insert (table, g_strdup ((gchar *) "fac_ref"), g_strdup (fac_ref)); xmlFree (fac_ref); } /* Same as before, we got a text node in between, thus the 2 prev * node->parent is , the one before is */ media_type = (gchar *) xmlGetProp (node->parent->prev->prev, (const xmlChar *) "type"); g_hash_table_insert (table, g_strdup ((gchar *) "media_type"), g_strdup (media_type)); xmlFree (media_type); if (effect_table) g_hash_table_insert (table, g_strdup ("effect_props"), effect_table); g_hash_table_insert (priv->track_elements_table, g_strdup (id), table); } xmlXPathFreeObject (xpathObj); return TRUE; } static gboolean parse_clips (GESFormatter * self) { int size, j; xmlNodeSetPtr nodes; xmlXPathObjectPtr xpathObj; xmlNodePtr clip_nd, tmp_nd, tmp_nd2; xmlChar *trackelementrefId, *facrefId = NULL; GList *reflist = NULL; GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv; GHashTable *clips_table = priv->clips_table; xpathObj = xmlXPathEvalExpression ((const xmlChar *) "/pitivi/timeline/timeline-objects/timeline-object", priv->xpathCtx); if (xpathObj == NULL) { xmlXPathFreeObject (xpathObj); return FALSE; } nodes = xpathObj->nodesetval; size = (nodes) ? nodes->nodeNr : 0; for (j = 0; j < size; j++) { clip_nd = nodes->nodeTab[j]; for (tmp_nd = clip_nd->children; tmp_nd; tmp_nd = tmp_nd->next) { /* We assume that factory-ref is always before the tckobjs-ref */ if (!xmlStrcmp (tmp_nd->name, (xmlChar *) "factory-ref")) { facrefId = xmlGetProp (tmp_nd, (xmlChar *) "id"); } else if (!xmlStrcmp (tmp_nd->name, (xmlChar *) "track-object-refs")) { for (tmp_nd2 = tmp_nd->children; tmp_nd2; tmp_nd2 = tmp_nd2->next) { if (!xmlStrcmp (tmp_nd2->name, (xmlChar *) "track-object-ref")) { /* We add the track object ref ID to the list of the current * Clip tracks, this way we can merge 2 * Clip-s into 1 when we have unlinked TrackElement-s */ reflist = g_hash_table_lookup (clips_table, facrefId); trackelementrefId = xmlGetProp (tmp_nd2, (xmlChar *) "id"); reflist = g_list_append (reflist, g_strdup ((gchar *) trackelementrefId)); g_hash_table_insert (clips_table, g_strdup ((gchar *) facrefId), reflist); xmlFree (trackelementrefId); } } } } } xmlXPathFreeObject (xpathObj); return TRUE; } static void set_properties (GObject * obj, GHashTable * props_table) { gint i; gchar **prop_array, *valuestr; gint64 value; gchar props[3][10] = { "duration", "in_point", "start" }; for (i = 0; i < 3; i++) { valuestr = g_hash_table_lookup (props_table, props[i]); prop_array = g_strsplit (valuestr, ")", 0); value = g_ascii_strtoll (prop_array[1], NULL, 0); g_object_set (obj, props[i], value, NULL); g_strfreev (prop_array); } } static void track_element_added_cb (GESClip * clip, GESTrackElement * track_element, GHashTable * props_table) { GESPitiviFormatter *formatter; formatter = GES_PITIVI_FORMATTER (g_hash_table_lookup (props_table, "current-formatter")); if (formatter) { GESPitiviFormatterPrivate *priv = formatter->priv; /* Make sure the hack to get a ref to the formatter * doesn't break everything */ g_hash_table_steal (props_table, "current-formatter"); priv->sources_to_load = g_list_remove (priv->sources_to_load, clip); if (!priv->sources_to_load && GES_FORMATTER (formatter)->project) ges_project_set_loaded (GES_FORMATTER (formatter)->project, GES_FORMATTER (formatter)); } /* Disconnect the signal */ g_signal_handlers_disconnect_by_func (clip, track_element_added_cb, props_table); } static void make_source (GESFormatter * self, GList * reflist, GHashTable * source_table) { GHashTable *props_table, *effect_table; gchar **prio_array; GESLayer *layer; GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv; gchar *fac_ref = NULL, *media_type = NULL, *filename = NULL, *prio_str; GList *tmp = NULL, *keys, *tmp_key; GESUriClip *src = NULL; gint prio; gboolean a_avail = FALSE, v_avail = FALSE, video; GHashTable *trackelement_table = priv->track_elements_table; for (tmp = reflist; tmp; tmp = tmp->next) { /* Get the layer */ props_table = g_hash_table_lookup (trackelement_table, (gchar *) tmp->data); prio_str = (gchar *) g_hash_table_lookup (props_table, "priority"); prio_array = g_strsplit (prio_str, ")", 0); prio = (gint) g_ascii_strtod (prio_array[1], NULL); g_strfreev (prio_array); /* If we do not have any layer with this priority, create it */ if (!(layer = g_hash_table_lookup (priv->layers_table, &prio))) { layer = ges_layer_new (); g_object_set (layer, "auto-transition", TRUE, "priority", prio, NULL); ges_timeline_add_layer (self->timeline, layer); g_hash_table_insert (priv->layers_table, g_memdup (&prio, sizeof (guint64)), layer); } fac_ref = (gchar *) g_hash_table_lookup (props_table, "fac_ref"); media_type = (gchar *) g_hash_table_lookup (props_table, "media_type"); if (!g_strcmp0 (media_type, "pitivi.stream.VideoStream")) video = TRUE; else video = FALSE; /* FIXME I am sure we could reimplement this whole part * in a simpler way */ if (g_strcmp0 (fac_ref, (gchar *) "effect")) { /* FIXME this is a hack to get a ref to the formatter when receiving * child-added */ g_hash_table_insert (props_table, (gchar *) "current-formatter", self); if (a_avail && (!video)) { a_avail = FALSE; } else if (v_avail && (video)) { v_avail = FALSE; } else { /* If we only have audio or only video in the previous source, * set it has such */ if (a_avail) { ges_clip_set_supported_formats (GES_CLIP (src), GES_TRACK_TYPE_VIDEO); } else if (v_avail) { ges_clip_set_supported_formats (GES_CLIP (src), GES_TRACK_TYPE_AUDIO); } filename = (gchar *) g_hash_table_lookup (source_table, "filename"); src = ges_uri_clip_new (filename); if (!video) { v_avail = TRUE; a_avail = FALSE; } else { a_avail = TRUE; v_avail = FALSE; } set_properties (G_OBJECT (src), props_table); ges_layer_add_clip (layer, GES_CLIP (src)); g_signal_connect (src, "child-added", G_CALLBACK (track_element_added_cb), props_table); priv->sources_to_load = g_list_prepend (priv->sources_to_load, src); } } else { GESEffect *effect; gchar *active = (gchar *) g_hash_table_lookup (props_table, "active"); effect = ges_effect_new ((gchar *) g_hash_table_lookup (props_table, (gchar *) "effect_name")); ges_track_element_set_track_type (GES_TRACK_ELEMENT (effect), (video ? GES_TRACK_TYPE_VIDEO : GES_TRACK_TYPE_AUDIO)); effect_table = g_hash_table_lookup (props_table, (gchar *) "effect_props"); ges_container_add (GES_CONTAINER (src), GES_TIMELINE_ELEMENT (effect)); if (!g_strcmp0 (active, (gchar *) "(bool)False")) ges_track_element_set_active (GES_TRACK_ELEMENT (effect), FALSE); /* Set effect properties */ keys = g_hash_table_get_keys (effect_table); for (tmp_key = keys; tmp_key; tmp_key = tmp_key->next) { GstStructure *structure; const GValue *value; GParamSpec *spec; GstCaps *caps; gchar *prop_val; prop_val = (gchar *) g_hash_table_lookup (effect_table, (gchar *) tmp_key->data); if (g_strstr_len (prop_val, -1, "(GEnum)")) { gchar **val = g_strsplit (prop_val, ")", 2); ges_track_element_set_child_properties (GES_TRACK_ELEMENT (effect), (gchar *) tmp_key->data, atoi (val[1]), NULL); g_strfreev (val); } else if (ges_track_element_lookup_child (GES_TRACK_ELEMENT (effect), (gchar *) tmp->data, NULL, &spec)) { gchar *caps_str = g_strdup_printf ("structure1, property1=%s;", prop_val); caps = gst_caps_from_string (caps_str); g_free (caps_str); structure = gst_caps_get_structure (caps, 0); value = gst_structure_get_value (structure, "property1"); ges_track_element_set_child_property_by_pspec (GES_TRACK_ELEMENT (effect), spec, (GValue *) value); gst_caps_unref (caps); } } } } if (a_avail) { ges_clip_set_supported_formats (GES_CLIP (src), GES_TRACK_TYPE_VIDEO); } else if (v_avail) { ges_clip_set_supported_formats (GES_CLIP (src), GES_TRACK_TYPE_AUDIO); } } static gboolean make_clips (GESFormatter * self) { GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv; GHashTable *source_table; GList *keys = NULL, *tmp = NULL, *reflist = NULL; keys = g_hash_table_get_keys (priv->clips_table); for (tmp = keys; tmp; tmp = tmp->next) { gchar *fac_id = (gchar *) tmp->data; reflist = g_hash_table_lookup (priv->clips_table, fac_id); source_table = g_hash_table_lookup (priv->sources_table, fac_id); make_source (self, reflist, source_table); } g_list_free (keys); return TRUE; } static gboolean load_pitivi_file_from_uri (GESFormatter * self, GESTimeline * timeline, const gchar * uri, GError ** error) { xmlDocPtr doc; GESLayer *layer; GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv; gboolean ret = TRUE; gint *prio = malloc (sizeof (gint)); *prio = 0; layer = ges_layer_new (); g_object_set (layer, "auto-transition", TRUE, NULL); g_hash_table_insert (priv->layers_table, prio, layer); g_object_set (layer, "priority", (gint32) 0, NULL); if (!ges_timeline_add_layer (timeline, layer)) { GST_ERROR ("Couldn't add layer"); return FALSE; } if (!(doc = xmlParseFile (uri))) { GST_ERROR ("The xptv file for uri %s was badly formed or did not exist", uri); return FALSE; } priv->xpathCtx = xmlXPathNewContext (doc); if (self->project) parse_metadatas (self); if (!create_tracks (self)) { GST_ERROR ("Couldn't create tracks"); return FALSE; } list_sources (self); if (!parse_clips (self)) { GST_ERROR ("Couldn't find clips markup in the xptv file"); return FALSE; } if (!parse_track_elements (self)) { GST_ERROR ("Couldn't find track objects markup in the xptv file"); return FALSE; } /* If there are no clips to load we should emit * 'project-loaded' signal. */ if (!g_hash_table_size (priv->clips_table) && GES_FORMATTER (self)->project) { ges_project_set_loaded (GES_FORMATTER (self)->project, GES_FORMATTER (self)); } else { if (!make_clips (self)) { GST_ERROR ("Couldn't deserialise the project properly"); return FALSE; } } xmlXPathFreeContext (priv->xpathCtx); xmlFreeDoc (doc); return ret; } /* Object functions */ static void ges_pitivi_formatter_finalize (GObject * object) { GESPitiviFormatter *self = GES_PITIVI_FORMATTER (object); GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv; g_hash_table_destroy (priv->sources_table); g_hash_table_destroy (priv->source_uris); g_hash_table_destroy (priv->saving_source_table); g_list_free (priv->sources_to_load); if (priv->clips_table != NULL) { g_hash_table_foreach (priv->clips_table, (GHFunc) list_table_destroyer, NULL); } if (priv->layers_table != NULL) g_hash_table_destroy (priv->layers_table); if (priv->track_elements_table != NULL) { g_hash_table_destroy (priv->track_elements_table); } G_OBJECT_CLASS (ges_pitivi_formatter_parent_class)->finalize (object); } static void ges_pitivi_formatter_class_init (GESPitiviFormatterClass * klass) { GESFormatterClass *formatter_klass; GObjectClass *object_class; GST_DEBUG_CATEGORY_INIT (ges_pitivi_formatter_debug, "ges_pitivi_formatter", GST_DEBUG_FG_YELLOW, "ges pitivi formatter"); object_class = G_OBJECT_CLASS (klass); formatter_klass = GES_FORMATTER_CLASS (klass); g_type_class_add_private (klass, sizeof (GESPitiviFormatterPrivate)); formatter_klass->can_load_uri = pitivi_can_load_uri; formatter_klass->save_to_uri = NULL; formatter_klass->load_from_uri = load_pitivi_file_from_uri; object_class->finalize = ges_pitivi_formatter_finalize; ges_formatter_class_register_metas (formatter_klass, "pitivi", "Legacy Pitivi project files", "xptv", "text/x-xptv", DOUBLE_VERSION, GST_RANK_MARGINAL); } static void ges_pitivi_formatter_init (GESPitiviFormatter * self) { GESPitiviFormatterPrivate *priv; self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, GES_TYPE_PITIVI_FORMATTER, GESPitiviFormatterPrivate); priv = self->priv; priv->track_elements_table = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, (GDestroyNotify) g_hash_table_destroy); priv->clips_table = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL); priv->layers_table = g_hash_table_new_full (g_int_hash, g_str_equal, g_free, gst_object_unref); priv->sources_table = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, (GDestroyNotify) g_hash_table_destroy); priv->source_uris = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free); priv->sources_to_load = NULL; /* Saving context */ priv->saving_source_table = g_hash_table_new_full (g_str_hash, g_int_equal, g_free, g_free); priv->nb_sources = 1; } GESPitiviFormatter * ges_pitivi_formatter_new (void) { return g_object_new (GES_TYPE_PITIVI_FORMATTER, NULL); }