[PATCH 1/3] local-metadata: added a new local source
- From: Guillaume Emont <gemont igalia com>
- To: grilo-list gnome org
- Subject: [PATCH 1/3] local-metadata: added a new local source
- Date: Thu, 27 Jan 2011 19:26:06 +0100
For the moment it only implements thumbnails for images and videos. It does not
create any thumbnail but uses GIO's G_FILE_ATTRIBUTE_THUMBNAIL_PATH to find out
if there is one existing.
There's a plan to support the Media Art Storage Spec as well, but it is not
implemented yet.
---
configure.ac | 21 +++
src/Makefile.am | 6 +-
src/local-metadata/Makefile.am | 32 ++++
src/local-metadata/grl-local-metadata.c | 263 +++++++++++++++++++++++++++++
src/local-metadata/grl-local-metadata.h | 72 ++++++++
src/local-metadata/grl-local-metadata.xml | 9 +
6 files changed, 402 insertions(+), 1 deletions(-)
create mode 100644 src/local-metadata/Makefile.am
create mode 100644 src/local-metadata/grl-local-metadata.c
create mode 100644 src/local-metadata/grl-local-metadata.h
create mode 100644 src/local-metadata/grl-local-metadata.xml
diff --git a/configure.ac b/configure.ac
index 240b1a5..4ab0785 100644
--- a/configure.ac
+++ b/configure.ac
@@ -688,6 +688,26 @@ AC_SUBST(TRACKER_PLUGIN_ID)
AC_DEFINE_UNQUOTED([TRACKER_PLUGIN_ID], ["$TRACKER_PLUGIN_ID"], [Tracker plugin ID])
# ----------------------------------------------------------
+# BUILD LOCAL METADATA PLUGIN
+# ----------------------------------------------------------
+
+AC_ARG_ENABLE(localmetadata,
+ AC_HELP_STRING([--enable-localmetadata],
+ [enable Local Metadata plugin (default: yes)]),,
+ [enable_localmetadata=yes])
+
+AM_CONDITIONAL([LOCALMETADATA_PLUGIN], [test "x$enable_localmetadata" = "xyes"])
+GRL_PLUGINS_ALL="$GRL_PLUGINS_ALL localmetadata"
+if test "x$enable_localmetadata" = "xyes"
+then
+ GRL_PLUGINS_ENABLED="$GRL_PLUGINS_ENABLED localmetadata"
+fi
+
+LOCALMETADATA_PLUGIN_ID="grl-local-metadata"
+AC_SUBST(LOCALMETADATA_PLUGIN_ID)
+AC_DEFINE_UNQUOTED([LOCALMETADATA_PLUGIN_ID], ["$LOCALMETADATA_PLUGIN_ID"], [Local metadata plugin ID])
+
+# ----------------------------------------------------------
# GETTEXT
# ----------------------------------------------------------
@@ -726,6 +746,7 @@ AC_CONFIG_FILES([
src/vimeo/Makefile
src/gravatar/Makefile
src/tracker/Makefile
+ src/local-metadata/Makefile
test/Makefile
])
diff --git a/src/Makefile.am b/src/Makefile.am
index 11b9cf4..a8536b5 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -67,10 +67,14 @@ if TRACKER_PLUGIN
SUBDIRS += tracker
endif
+if LOCALMETADATA_PLUGIN
+SUBDIRS += local-metadata
+endif
+
DIST_SUBDIRS = \
youtube fake-metadata filesystem jamendo lastfm-albumart upnp flickr \
podcasts bookmarks shoutcast apple-trailers metadata-store vimeo \
- gravatar tracker
+ gravatar tracker local-metadata
MAINTAINERCLEANFILES = \
*.in \
diff --git a/src/local-metadata/Makefile.am b/src/local-metadata/Makefile.am
new file mode 100644
index 0000000..ce8f231
--- /dev/null
+++ b/src/local-metadata/Makefile.am
@@ -0,0 +1,32 @@
+#
+# Makefile.am
+#
+# Author: Guillaume Emont <gemont igalia com>
+#
+# Copyright (C) 2010-2011 Igalia S.L. All rights reserved.
+
+lib_LTLIBRARIES = libgrllocalmetadata.la
+
+libgrllocalmetadata_la_CFLAGS = \
+ $(DEPS_CFLAGS)
+
+libgrllocalmetadata_la_LIBADD = \
+ $(DEPS_LIBS)
+
+libgrllocalmetadata_la_LDFLAGS = \
+ -module \
+ -avoid-version
+
+libgrllocalmetadata_la_SOURCES = grl-local-metadata.c grl-local-metadata.h
+
+libdir=$(GRL_PLUGINS_DIR)
+localmetadataxmldir = $(GRL_PLUGINS_CONF_DIR)
+localmetadataxml_DATA = $(LOCALMETADATA_PLUGIN_ID).xml
+
+EXTRA_DIST = $(localmetadataxml_DATA)
+
+MAINTAINERCLEANFILES = \
+ *.in \
+ *~
+
+DISTCLEANFILES = $(MAINTAINERCLEANFILES)
diff --git a/src/local-metadata/grl-local-metadata.c b/src/local-metadata/grl-local-metadata.c
new file mode 100644
index 0000000..bfbeeea
--- /dev/null
+++ b/src/local-metadata/grl-local-metadata.c
@@ -0,0 +1,263 @@
+/*
+ * Copyright (C) 2010-2011 Igalia S.L.
+ *
+ * Contact: Guillaume Emont <gemont igalia 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; 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 St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <grilo.h>
+#include <gio/gio.h>
+
+#include "grl-local-metadata.h"
+
+#define GRL_LOG_DOMAIN_DEFAULT local_metadata_log_domain
+GRL_LOG_DOMAIN_STATIC(local_metadata_log_domain);
+
+#define PLUGIN_ID LOCALMETADATA_PLUGIN_ID
+
+#define SOURCE_ID "grl-local-metadata"
+#define SOURCE_NAME "Local Metadata Provider"
+#define SOURCE_DESC "A source providing locally available metadata"
+
+#define AUTHOR "Igalia S.L."
+#define LICENSE "LGPL"
+#define SITE "http://www.igalia.com";
+
+
+static GrlLocalMetadataSource *grl_local_metadata_source_new (void);
+
+static void grl_local_metadata_source_resolve (GrlMetadataSource *source,
+ GrlMetadataSourceResolveSpec *rs);
+
+static const GList *grl_local_metadata_source_supported_keys (GrlMetadataSource *source);
+
+static const GList * grl_local_metadata_source_key_depends (GrlMetadataSource *source,
+ GrlKeyID key_id);
+
+gboolean grl_local_metadata_source_plugin_init (GrlPluginRegistry *registry,
+ const GrlPluginInfo *plugin,
+ GList *configs);
+
+
+/* =================== GrlLocalMetadata Plugin =============== */
+
+gboolean
+grl_local_metadata_source_plugin_init (GrlPluginRegistry *registry,
+ const GrlPluginInfo *plugin,
+ GList *configs)
+{
+ GRL_LOG_DOMAIN_INIT (local_metadata_log_domain, "local-metadata");
+
+ GRL_DEBUG ("grl_local_metadata_source_plugin_init");
+
+ GrlLocalMetadataSource *source = grl_local_metadata_source_new ();
+ grl_plugin_registry_register_source (registry,
+ plugin,
+ GRL_MEDIA_PLUGIN (source),
+ NULL);
+ return TRUE;
+}
+
+GRL_PLUGIN_REGISTER (grl_local_metadata_source_plugin_init,
+ NULL,
+ PLUGIN_ID);
+
+/* ================== GrlLocalMetadata GObject ================ */
+
+static GrlLocalMetadataSource *
+grl_local_metadata_source_new (void)
+{
+ GRL_DEBUG ("grl_local_metadata_source_new");
+ return g_object_new (GRL_LOCAL_METADATA_SOURCE_TYPE,
+ "source-id", SOURCE_ID,
+ "source-name", SOURCE_NAME,
+ "source-desc", SOURCE_DESC,
+ NULL);
+}
+
+static void
+grl_local_metadata_source_class_init (GrlLocalMetadataSourceClass * klass)
+{
+ GrlMetadataSourceClass *metadata_class = GRL_METADATA_SOURCE_CLASS (klass);
+ metadata_class->supported_keys = grl_local_metadata_source_supported_keys;
+ metadata_class->key_depends = grl_local_metadata_source_key_depends;
+ metadata_class->resolve = grl_local_metadata_source_resolve;
+}
+
+static void
+grl_local_metadata_source_init (GrlLocalMetadataSource *source)
+{
+}
+
+G_DEFINE_TYPE (GrlLocalMetadataSource,
+ grl_local_metadata_source,
+ GRL_TYPE_METADATA_SOURCE);
+
+/* ======================= Utilities ==================== */
+static void
+got_file_info (GFile *file, GAsyncResult *result,
+ GrlMetadataSourceResolveSpec *rs)
+{
+ GFileInfo *info;
+ GError *error = NULL;
+ const gchar *thumbnail_path;
+
+ GRL_DEBUG ("got_file_info");
+
+ info = g_file_query_info_finish (file, result, &error);
+ if (error)
+ goto error;
+
+ thumbnail_path =
+ g_file_info_get_attribute_byte_string (info, G_FILE_ATTRIBUTE_THUMBNAIL_PATH);
+
+
+ if (thumbnail_path) {
+ gchar * thumbnail_uri = g_filename_to_uri (thumbnail_path, NULL, &error);
+ if (error)
+ goto error;
+
+ GRL_INFO ("Got thumbnail %s", thumbnail_uri);
+ grl_media_set_thumbnail (rs->media, thumbnail_uri);
+ g_free (thumbnail_uri);
+
+ rs->callback (rs->source, rs->media, rs->user_data, NULL);
+ goto exit;
+ }
+
+error:
+ {
+ GError *new_error;
+ if (error)
+ new_error = g_error_new (GRL_CORE_ERROR, GRL_CORE_ERROR_RESOLVE_FAILED,
+ "Got error: %s", error->message);
+ else
+ new_error = g_error_new (GRL_CORE_ERROR, GRL_CORE_ERROR_RESOLVE_FAILED,
+ "Could not find a thumbnail for %s",
+ g_file_get_path (file));
+
+ rs->callback (rs->source, rs->media, rs->user_data, new_error);
+
+ g_error_free (error);
+ g_error_free (new_error);
+ }
+
+exit:
+ if (info)
+ g_object_unref (info);
+}
+
+static void
+resolve_image (GrlMetadataSourceResolveSpec *rs)
+{
+ GFile *file;
+
+ GRL_DEBUG ("resolve_image");
+
+ file = g_file_new_for_uri (grl_media_get_url (rs->media));
+
+ g_file_query_info_async (file, G_FILE_ATTRIBUTE_THUMBNAIL_PATH,
+ G_FILE_QUERY_INFO_NONE, G_PRIORITY_DEFAULT, NULL,
+ (GAsyncReadyCallback)got_file_info, rs);
+}
+
+static void
+resolve_album_art (GrlMetadataSourceResolveSpec *rs)
+{
+ /* FIXME: implement this, according to
+ * http://live.gnome.org/MediaArtStorageSpec */
+ GError *error;
+ error = g_error_new (GRL_CORE_ERROR, GRL_CORE_ERROR_RESOLVE_FAILED,
+ "Thumbnail resolution for GrlMediaAudio not implemented in local-metadata");
+ rs->callback (rs->source, rs->media, rs->user_data, error);
+ g_error_free (error);
+}
+
+/* ================== API Implementation ================ */
+
+static const GList *
+grl_local_metadata_source_supported_keys (GrlMetadataSource *source)
+{
+ static GList *keys = NULL;
+ if (!keys) {
+ keys = grl_metadata_key_list_new (GRL_METADATA_KEY_THUMBNAIL,
+ NULL);
+ }
+ return keys;
+}
+
+static const GList *
+grl_local_metadata_source_key_depends (GrlMetadataSource *source,
+ GrlKeyID key_id)
+{
+ static GList *deps = NULL;
+ if (!deps) {
+ deps = grl_metadata_key_list_new (GRL_METADATA_KEY_URL, NULL);
+ }
+
+ if (key_id == GRL_METADATA_KEY_THUMBNAIL)
+ return deps;
+
+ return NULL;
+}
+
+static void
+grl_local_metadata_source_resolve (GrlMetadataSource *source,
+ GrlMetadataSourceResolveSpec *rs)
+{
+ const gchar *url;
+ gchar *scheme;
+ GError *error;
+
+ GRL_DEBUG ("grl_local_metadata_source_resolve");
+
+ url = grl_media_get_url (rs->media);
+ scheme = g_uri_parse_scheme (url);
+
+ if (0 != g_strcmp0 (scheme, "file"))
+ error = g_error_new (GRL_CORE_ERROR, GRL_CORE_ERROR_RESOLVE_FAILED,
+ "local-metadata needs a url in the file:// scheme");
+ else if (!g_list_find (rs->keys, GRL_METADATA_KEY_THUMBNAIL))
+ error = g_error_new (GRL_CORE_ERROR, GRL_CORE_ERROR_RESOLVE_FAILED,
+ "local-metadata can only resolve the thumbnail key");
+
+ if (error) {
+ /* No can do! */
+ rs->callback (source, rs->media, rs->user_data, error);
+ g_error_free (error);
+ goto exit;
+ }
+
+ if (GRL_IS_MEDIA_VIDEO (rs->media)
+ || GRL_IS_MEDIA_IMAGE (rs->media)) {
+ resolve_image (rs);
+ } else if (GRL_IS_MEDIA_AUDIO (rs->media)) {
+ resolve_album_art (rs);
+ } else {
+ /* What's that media type? */
+ rs->callback (source, rs->media, rs->user_data, NULL);
+ }
+
+exit:
+ g_free (scheme);
+}
+
diff --git a/src/local-metadata/grl-local-metadata.h b/src/local-metadata/grl-local-metadata.h
new file mode 100644
index 0000000..448051e
--- /dev/null
+++ b/src/local-metadata/grl-local-metadata.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2010-2011 Igalia S.L.
+ *
+ * Contact: Guillaume Emont <gemont igalia 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; 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 St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef _GRL_LOCAL_METADATA_SOURCE_H_
+#define _GRL_LOCAL_METADATA_SOURCE_H_
+
+#include <grilo.h>
+
+#define GRL_LOCAL_METADATA_SOURCE_TYPE \
+ (grl_local_metadata_source_get_type ())
+
+#define GRL_LOCAL_METADATA_SOURCE(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
+ GRL_LOCAL_METADATA_SOURCE_TYPE, \
+ GrlLocalMetadataSource))
+
+#define GRL_IS_LOCAL_METADATA_SOURCE(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
+ GRL_LOCAL_METADATA_SOURCE_TYPE))
+
+#define GRL_LOCAL_METADATA_SOURCE_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass), \
+ GRL_LOCAL_METADATA_SOURCE_TYPE, \
+ GrlLocalMetadataSourceClass))
+
+#define GRL_IS_LOCAL_METADATA_SOURCE_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass), \
+ GRL_LOCAL_METADATA_SOURCE_TYPE))
+
+#define GRL_LOCAL_METADATA_SOURCE_GET_CLASS(obj) \
+ (G_TYPE_INSTANCE_GET_CLASS ((obj), \
+ GRL_LOCAL_METADATA_SOURCE_TYPE, \
+ GrlLocalMetadataSourceClass))
+
+typedef struct _GrlLocalMetadataSource GrlLocalMetadataSource;
+
+struct _GrlLocalMetadataSource {
+
+ GrlMetadataSource parent;
+
+};
+
+typedef struct _GrlLocalMetadataSourceClass GrlLocalMetadataSourceClass;
+
+struct _GrlLocalMetadataSourceClass {
+
+ GrlMetadataSourceClass parent_class;
+
+};
+
+GType grl_local_metadata_source_get_type (void);
+
+#endif /* _GRL_LOCAL_METADATA_SOURCE_H_ */
diff --git a/src/local-metadata/grl-local-metadata.xml b/src/local-metadata/grl-local-metadata.xml
new file mode 100644
index 0000000..073392e
--- /dev/null
+++ b/src/local-metadata/grl-local-metadata.xml
@@ -0,0 +1,9 @@
+<plugin>
+ <info>
+ <name>Local Metadata Provider</name>
+ <description>A plugin that gets simple-to-obtain metadata from the local system</description>
+ <author>Igalia S.L.</author>
+ <license>LGPL</license>
+ <site>http://www.igalia.com</site>
+ </info>
+</plugin>
--
1.7.1
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