Implement tumbler_service_queue() based on TumblerSchedulerRequest.

When an org.freedesktop.thumbnailer.Generic.Queue request is sent to
TumblerService, it does three things:

  1. It requests a TumblerThumbnailer array from its TumblerRegistry.
     This array has the same length as the URIs and mime hints arrays
     passed to org.freedesktop.thumbnailer.Generic.Queue. The Nth
     thumbnailer in the array is responsible for generating the
     thumbnailer for the Nth URI.

  2. It allocates a TumblerSchedulerRequest.

  3. It asks the TumblerScheduler to push the request.

Amongst others, the following functions were added in this commit:

  - tumbler_registry_get_thumbnailer_array()
  - tumbler_registry_lookup() (private function)
  - tumbler_scheduler_request_new()
  - tumbler_schedulre_request_free()
  - tumbler_thumbnailer_array_copy()
  - tumbler_thumbnailer_array_free()

1 files changed, 10 insertions, 7 deletions

diff --git a/tumbler/tumbler-thumbnailer.h b/tumbler/tumbler-thumbnailer.h
index 1033391..76158fa 100644
--- a/tumbler/tumbler-thumbnailer.h
+++ b/tumbler/tumbler-thumbnailer.h
@@ -52,15 +52,18 @@ struct _TumblerThumbnailerIface
                   const gchar        *mime_hint);
 };
 
-GType tumbler_thumbnailer_get_type        (void) G_GNUC_CONST;
+GType                tumbler_thumbnailer_get_type        (void) G_GNUC_CONST;
 
-void  tumbler_thumbnailer_create          (TumblerThumbnailer *thumbnailer,
-                                           const gchar        *uri,
-                                           const gchar        *mime_hint);
+void                 tumbler_thumbnailer_create          (TumblerThumbnailer  *thumbnailer,
+                                                          const gchar         *uri,
+                                                          const gchar         *mime_hint);
 
-GStrv tumbler_thumbnailer_get_hash_keys   (TumblerThumbnailer *thumbnailer);
-GStrv tumbler_thumbnailer_get_mime_types  (TumblerThumbnailer *thumbnailer);
-GStrv tumbler_thumbnailer_get_uri_schemes (TumblerThumbnailer *thumbnailer);
+GStrv                tumbler_thumbnailer_get_hash_keys   (TumblerThumbnailer  *thumbnailer);
+GStrv                tumbler_thumbnailer_get_mime_types  (TumblerThumbnailer  *thumbnailer);
+GStrv                tumbler_thumbnailer_get_uri_schemes (TumblerThumbnailer  *thumbnailer);
+
+TumblerThumbnailer **tumbler_thumbnailer_array_copy      (TumblerThumbnailer **thumbnailers);
+void                 tumbler_thumbnailer_array_free      (TumblerThumbnailer **thumbnailers);
 
 G_END_DECLS