basesink: handle step end correctly

when we have a new step event with a -1 amount, make sure that we follow the
regular code path so that the stop_end handler is called as usual. This takes
care of flushing the buffer in case of a flushing step and also posts a step end
message.

See https://bugzilla.gnome.org/show_bug.cgi?id=679378

diff --git a/libs/gst/base/gstbasesink.c b/libs/gst/base/gstbasesink.c
index 2a20f23..00bfcc8 100644 (file)
--- a/libs/gst/base/gstbasesink.c
+++ b/libs/gst/base/gstbasesink.c
@@ -1517,14 +1517,9 @@ start_stepping (GstBaseSink * sink, GstSegment * segment,
   GST_DEBUG_OBJECT (sink, "step started at running_time %" GST_TIME_FORMAT,
       GST_TIME_ARGS (current->start));
 
-  if (current->amount == -1) {
-    GST_DEBUG_OBJECT (sink, "step amount == -1, stop stepping");
-    current->valid = FALSE;
-  } else {
-    GST_DEBUG_OBJECT (sink, "step amount: %" G_GUINT64_FORMAT ", format: %s, "
-        "rate: %f", current->amount, gst_format_get_name (current->format),
-        current->rate);
-  }
+  GST_DEBUG_OBJECT (sink, "step amount: %" G_GUINT64_FORMAT ", format: %s, "
+      "rate: %f", current->amount, gst_format_get_name (current->format),
+      current->rate);
 }
 
 static void
@@ -1595,6 +1590,9 @@ handle_stepping (GstBaseSink * sink, GstSegment * segment,
 {
   gboolean step_end = FALSE;
 
+  if (current->amount == -1)
+    return TRUE;
+
   /* see if we need to skip this buffer because of stepping */
   switch (current->format) {
     case GST_FORMAT_TIME: