[rygel] core: Only offer time seeking if duration is known

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 232ec312e33c3dc9f4b71eb6aa394af57ac437c7
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Fri Aug 6 00:05:43 2010 +0300

    core: Only offer time seeking if duration is known
    
    This satisfies DLNA requirement 7.3.26.3.

 src/rygel/rygel-transcoder.vala |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/src/rygel/rygel-transcoder.vala b/src/rygel/rygel-transcoder.vala
index bc3e13a..fe6c8c2 100644
--- a/src/rygel/rygel-transcoder.vala
+++ b/src/rygel/rygel-transcoder.vala
@@ -79,7 +79,11 @@ internal abstract class Rygel.Transcoder : GLib.Object {
         protocol_info.dlna_flags = DLNAFlags.STREAMING_TRANSFER_MODE |
                                    DLNAFlags.SENDER_PACED |
                                    DLNAFlags.DLNA_V15;
-        protocol_info.dlna_operation = DLNAOperation.TIMESEEK;
+        if (item.duration > 0) {
+            protocol_info.dlna_operation = DLNAOperation.TIMESEEK;
+        } else {
+            protocol_info.dlna_operation = DLNAOperation.NONE;
+        }
 
         return res;
     }