[gupnp-dlna] Let the backend provide a DLNA profile

[Jens Georg <jensgeorg src gnome org>]

commit 5c67be7bc73f37e1ffe441a8442e238e9a97d68b
Author: Jens Georg <mail jensge org>
Date:   Tue Apr 2 15:33:22 2013 +0200

    Let the backend provide a DLNA profile
    
    https://bugzilla.gnome.org/show_bug.cgi?id=697102

 libgupnp-dlna/gupnp-dlna-information.c     |   22 ++++++++++++++++++++++
 libgupnp-dlna/gupnp-dlna-information.h     |   10 +++++++++-
 libgupnp-dlna/gupnp-dlna-profile-guesser.c |   21 +++++++++++++++++++++
 3 files changed, 52 insertions(+), 1 deletions(-)
---
diff --git a/libgupnp-dlna/gupnp-dlna-information.c b/libgupnp-dlna/gupnp-dlna-information.c
index 7d1ea8d..37fb023 100644
--- a/libgupnp-dlna/gupnp-dlna-information.c
+++ b/libgupnp-dlna/gupnp-dlna-information.c
@@ -60,6 +60,12 @@ enum {
         PROP_VIDEO_INFO
 };
 
+static const gchar *
+gupnp_dlna_information_get_profile_name_default (GUPnPDLNAInformation *info G_GNUC_UNUSED)
+{
+        return NULL;
+}
+
 static void
 gupnp_dlna_information_dispose (GObject *object)
 {
@@ -162,6 +168,7 @@ gupnp_dlna_information_class_init (GUPnPDLNAInformationClass *info_class)
         info_class->get_image_information = NULL;
         info_class->get_video_information = NULL;
         info_class->get_audio_information = NULL;
+        info_class->get_profile_name = gupnp_dlna_information_get_profile_name_default;
 
         /**
          * GUPnPDLNAInformation:uri:
@@ -394,6 +401,21 @@ gupnp_dlna_information_get_video_information (GUPnPDLNAInformation *info)
 }
 
 /**
+ * gupnp_dlna_information_get_profile_name:
+ * @info: A #GUPnPDLNAInformation object.
+ *
+ * Returns: (transfer none): The name of a DLNA profile or %NULL.
+ */
+const gchar *
+gupnp_dlna_information_get_profile_name (GUPnPDLNAInformation *info)
+{
+        g_return_val_if_fail (GUPNP_IS_DLNA_INFORMATION (info), NULL);
+
+        return GUPNP_DLNA_INFORMATION_GET_CLASS (info)->get_profile_name (info);
+}
+
+
+/**
  * gupnp_dlna_information_get_uri:
  * @info: A #GUPnPDLNAInformation object.
  *
diff --git a/libgupnp-dlna/gupnp-dlna-information.h b/libgupnp-dlna/gupnp-dlna-information.h
index 88e6736..e9c6bf3 100644
--- a/libgupnp-dlna/gupnp-dlna-information.h
+++ b/libgupnp-dlna/gupnp-dlna-information.h
@@ -74,6 +74,8 @@ typedef struct {
  * to get an image information.
  * @get_video_information: This is called by #GUPnPDLNAProfileGuesser
  * to get a video information.
+ * @get_profile_name: This is called by #GUPnPDLNAProfileGuesser to
+ * get the name of the DLNA profile assigned with this information.
  * @_reserved: Padding. Ignore it.
  */
 typedef struct {
@@ -91,7 +93,10 @@ typedef struct {
         GUPnPDLNAVideoInformation *
         (* get_video_information) (GUPnPDLNAInformation *info);
 
-        gpointer _reserved[12];
+        const gchar *
+        (* get_profile_name) (GUPnPDLNAInformation *info);
+
+        gpointer _reserved[11];
 } GUPnPDLNAInformationClass;
 
 GType
@@ -110,6 +115,9 @@ GUPnPDLNAVideoInformation*
 gupnp_dlna_information_get_video_information (GUPnPDLNAInformation *info);
 
 const gchar *
+gupnp_dlna_information_get_profile_name (GUPnPDLNAInformation *info);
+
+const gchar *
 gupnp_dlna_information_get_uri (GUPnPDLNAInformation *info);
 
 G_END_DECLS
diff --git a/libgupnp-dlna/gupnp-dlna-profile-guesser.c b/libgupnp-dlna/gupnp-dlna-profile-guesser.c
index b7738d5..ef9ce94 100644
--- a/libgupnp-dlna/gupnp-dlna-profile-guesser.c
+++ b/libgupnp-dlna/gupnp-dlna-profile-guesser.c
@@ -374,6 +374,13 @@ gupnp_dlna_profile_guesser_guess_profile_sync
         return profile;
 }
 
+static gint
+compare_profile_name (GUPnPDLNAProfile *profile, const char *name)
+{
+        return g_ascii_strcasecmp (gupnp_dlna_profile_get_name (profile),
+                                   name);
+}
+
 /**
  * gupnp_dlna_profile_guesser_guess_profile_from_info:
  * @guesser: The #GUPnPDLNAProfileGuesser object.
@@ -394,6 +401,7 @@ gupnp_dlna_profile_guesser_guess_profile_from_info
         GUPnPDLNAAudioInformation *audio_info;
         GUPnPDLNAImageInformation *image_info;
         GUPnPDLNAProfile *profile;
+        const gchar *profile_name;
 
         g_return_val_if_fail (GUPNP_IS_DLNA_PROFILE_GUESSER (guesser), NULL);
         g_return_val_if_fail (GUPNP_IS_DLNA_INFORMATION (info), NULL);
@@ -402,6 +410,19 @@ gupnp_dlna_profile_guesser_guess_profile_from_info
         video_info = gupnp_dlna_information_get_video_information (info);
         audio_info = gupnp_dlna_information_get_audio_information (info);
         image_info = gupnp_dlna_information_get_image_information (info);
+        profile_name = gupnp_dlna_information_get_profile_name (info);
+
+        if (profile_name) {
+                GList *it = NULL;
+                it = g_list_find_custom (profiles,
+                                         profile_name,
+                                         (GCompareFunc) compare_profile_name);
+                if (it != NULL)
+                        return it->data;
+                else
+                        g_warning ("Profile '%s' provided by back-end not known to GUPnP-DLNA",
+                                   profile_name);
+        }
 
         if (image_info)
                 profile = gupnp_dlna_profile_guesser_impl_guess_image_profile