imagefreeze: clear 0 DTS on buffers output, as sinks will prefer DTS over PTS for...

Since the initial decoded still image buffer will have dts=pts=0, and
we only set PTS on buffers we push out, all buffers pushed out would
have a DTS of 0. Sinks, however, will prefer DTS over PTS if both are
set, and will therefore always see a timestamp of 0 no matter what
the PTS is set to.

Fixes unit test too.

diff --git a/gst/imagefreeze/gstimagefreeze.c b/gst/imagefreeze/gstimagefreeze.c
index b219be7..34041e0 100644 (file)
--- a/gst/imagefreeze/gstimagefreeze.c
+++ b/gst/imagefreeze/gstimagefreeze.c
@@ -714,7 +714,7 @@ gst_image_freeze_src_loop (GstPad * pad)
   if (self->need_segment) {
     GstEvent *e;
 
-    GST_DEBUG_OBJECT (pad, "Pushing NEWSEGMENT event: %" GST_SEGMENT_FORMAT,
+    GST_DEBUG_OBJECT (pad, "Pushing SEGMENT event: %" GST_SEGMENT_FORMAT,
         &self->segment);
     e = gst_event_new_segment (&self->segment);
 
@@ -777,7 +777,8 @@ gst_image_freeze_src_loop (GstPad * pad)
   if (in_seg) {
     GstFlowReturn ret;
 
-    GST_BUFFER_TIMESTAMP (buffer) = cstart;
+    GST_BUFFER_DTS (buffer) = GST_CLOCK_TIME_NONE;
+    GST_BUFFER_PTS (buffer) = cstart;
     GST_BUFFER_DURATION (buffer) = cstop - cstart;
     GST_BUFFER_OFFSET (buffer) = offset;
     GST_BUFFER_OFFSET_END (buffer) = offset + 1;