x11: improve allocation parameters

Set the min-buffers to 2 because our base class will hold on to 1 buffer for the
last-buffer property.

diff --git a/sys/ximage/ximagesink.c b/sys/ximage/ximagesink.c
index 00c3817..0a3a64f 100644 (file)
--- a/sys/ximage/ximagesink.c
+++ b/sys/ximage/ximagesink.c
@@ -1482,7 +1482,8 @@ gst_ximagesink_sink_query (GstPad * sinkpad, GstQuery * query)
         if (!gst_buffer_pool_set_config (pool, config))
           goto config_failed;
       }
-      gst_query_set_allocation_params (query, size, 0, 0, 0, 15, pool);
+      /* we need at least 2 buffer because we hold on to the last one */
+      gst_query_set_allocation_params (query, size, 2, 0, 0, 15, pool);
 
       /* we also support various metadata */
       gst_query_add_allocation_meta (query, GST_META_API_VIDEO);

diff --git a/sys/xvimage/xvimagesink.c b/sys/xvimage/xvimagesink.c
index 1b12cf3..2d2384f 100644 (file)
--- a/sys/xvimage/xvimagesink.c
+++ b/sys/xvimage/xvimagesink.c
@@ -1996,7 +1996,8 @@ gst_xvimagesink_sink_query (GstPad * sinkpad, GstQuery * query)
         if (!gst_buffer_pool_set_config (pool, config))
           goto config_failed;
       }
-      gst_query_set_allocation_params (query, size, 0, 0, 0, 15, pool);
+      /* we need at least 2 buffer because we hold on to the last one */
+      gst_query_set_allocation_params (query, size, 2, 0, 0, 15, pool);
 
       /* we also support various metadata */
       gst_query_add_allocation_meta (query, GST_META_API_VIDEO);