stats: forward SetPCR

Simply forward the PCR value for now. It would be best to also trace and
include the PCR to the stat output but the current GNUPlot format is
specifically made for frame timestamps and PCR won't satisfy a lot of
the output columns.

modules/stream_out/stats.c

@@ -152,6 +152,15 @@ static int Send( sout_stream_t *p_stream, void *_id, block_t *p_buffer )
     return VLC_SUCCESS;
 }
 
+static void SetPCR( sout_stream_t *stream, vlc_tick_t pcr )
+{
+    /*
+     * XXX: Don't trace the PCR for now as it wouldn't match the tracing scheme
+     * already decided in `Send()`.
+     */
+    sout_StreamSetPCR( stream->p_next, pcr );
+}
+
 /*****************************************************************************
  * Open:
  *****************************************************************************/
@@ -251,7 +260,7 @@ static int FilterSend(sout_stream_t *stream, void *opaque, block_t *block)
 }
 
 static const struct sout_stream_operations filter_ops = {
-    FilterAdd, FilterDel, FilterSend, NULL, NULL, NULL,
+    FilterAdd, FilterDel, FilterSend, NULL, NULL, SetPCR,
 };
 
 static int FilterOpen(vlc_object_t *obj)