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/*
* Copyright (C) 2007, Jamie McCracken <jamiemcc@gnome.org>
* Copyright (C) 2008, Nokia <ivan.frade@nokia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <glib.h>
#include <glib/gstdio.h>
#include <gio/gio.h>
#include <totem-pl-parser.h>
#include <libtracker-extract/tracker-extract.h>
#include <libtracker-extract/tracker-guarantee.h>
#define PLAYLIST_PROPERTY_NO_TRACKS "entryCounter"
#define PLAYLIST_PROPERTY_DURATION "listDuration"
/*
FIXME Decide what to do with this in nepomuk
#define PLAYLIST_PROPERTY_CALCULATED "Playlist:ValidDuration"
*/
#define PLAYLIST_DEFAULT_NO_TRACKS 0
#define PLAYLIST_DEFAULT_DURATION 0
typedef struct {
guint32 track_counter;
gint64 total_time;
gchar *title;
TrackerSparqlBuilder *metadata;
} PlaylistMetadata;
static void
playlist_started (TotemPlParser *parser,
gchar *to_uri,
TotemPlParserMetadata *to_metadata,
gpointer user_data)
{
PlaylistMetadata *data;
data = (PlaylistMetadata *) user_data;
/* Avoid looking up every time */
data->title = g_strdup (g_hash_table_lookup (to_metadata, TOTEM_PL_PARSER_FIELD_TITLE));
}
static void
entry_parsed (TotemPlParser *parser,
gchar *to_uri,
GHashTable *to_metadata,
gpointer user_data)
{
PlaylistMetadata *data;
data = (PlaylistMetadata *) user_data;
data->track_counter++;
if (data->track_counter > 1000) {
/* limit playlists to 1000 entries for query performance reasons */
g_message ("Playlist has > 1000 entries. Ignoring for performance reasons.");
return;
}
if (data->track_counter == 1) {
/* first track, predicate needed */
tracker_sparql_builder_predicate (data->metadata, "nfo:hasMediaFileListEntry");
}
tracker_sparql_builder_object_blank_open (data->metadata);
tracker_sparql_builder_predicate (data->metadata, "a");
tracker_sparql_builder_object (data->metadata, "nfo:MediaFileListEntry");
tracker_sparql_builder_predicate (data->metadata, "nfo:entryUrl");
tracker_sparql_builder_object_unvalidated (data->metadata, to_uri);
tracker_sparql_builder_predicate (data->metadata, "nfo:listPosition");
tracker_sparql_builder_object_int64 (data->metadata, (gint64) data->track_counter);
tracker_sparql_builder_object_blank_close (data->metadata);
if (to_metadata) {
gchar *duration;
duration = g_hash_table_lookup (to_metadata, TOTEM_PL_PARSER_FIELD_DURATION);
if (duration == NULL) {
duration = g_hash_table_lookup (to_metadata, TOTEM_PL_PARSER_FIELD_DURATION_MS);
}
if (duration != NULL) {
gint64 secs = totem_pl_parser_parse_duration (duration, FALSE);
if (secs > 0) {
data->total_time += secs;
}
}
}
}
G_MODULE_EXPORT gboolean
tracker_extract_get_metadata (TrackerExtractInfo *info)
{
TotemPlParser *pl;
TrackerSparqlBuilder *metadata;
PlaylistMetadata data;
GFile *file;
gchar *uri;
pl = totem_pl_parser_new ();
file = tracker_extract_info_get_file (info);
uri = g_file_get_uri (file);
metadata = tracker_extract_info_get_metadata_builder (info);
data.track_counter = PLAYLIST_DEFAULT_NO_TRACKS;
data.total_time = PLAYLIST_DEFAULT_DURATION;
data.title = NULL;
data.metadata = metadata;
g_object_set (pl, "recurse", FALSE, "disable-unsafe", TRUE, NULL);
g_signal_connect (G_OBJECT (pl), "playlist-started", G_CALLBACK (playlist_started), &data);
g_signal_connect (G_OBJECT (pl), "entry-parsed", G_CALLBACK (entry_parsed), &data);
tracker_sparql_builder_predicate (metadata, "a");
tracker_sparql_builder_object (metadata, "nmm:Playlist");
tracker_sparql_builder_object (metadata, "nfo:MediaList");
if (totem_pl_parser_parse (pl, uri, FALSE) == TOTEM_PL_PARSER_RESULT_SUCCESS) {
if (data.title != NULL) {
g_message ("Playlist title:'%s'", data.title);
tracker_sparql_builder_predicate (metadata, "nie:title");
tracker_sparql_builder_object_unvalidated (metadata, data.title);
g_free (data.title);
} else {
g_message ("Playlist has no title, attempting to get one from filename");
tracker_guarantee_title_from_file (metadata, "nie:title", NULL, uri, NULL);
}
if (data.total_time > 0) {
tracker_sparql_builder_predicate (metadata, "nfo:listDuration");
tracker_sparql_builder_object_int64 (metadata, data.total_time);
}
if (data.track_counter > 0) {
tracker_sparql_builder_predicate (metadata, "nfo:entryCounter");
tracker_sparql_builder_object_int64 (metadata, data.track_counter);
}
} else {
g_warning ("Playlist could not be parsed, no error given");
}
g_object_unref (pl);
g_free (uri);
return TRUE;
}
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