From 950b772a0df849600d8a618808eca10fe3f73f80 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tim-Philipp=20M=C3=BCller?= <tim@centricular.com>
Date: Fri, 13 Feb 2015 15:49:50 +0000
Subject: [PATCH] aggregator: add gst_aggregator_pad_drop_buffer()

steal_buffer() + unref seems to be a wide-spread idiom
(which perhaps indicates that something is not quite
right with the way aggregator pad works currently).
---
 libs/gst/base/gstaggregator.c | 22 ++++++++++++++++++++++
 libs/gst/base/gstaggregator.h |  1 +
 2 files changed, 23 insertions(+)

diff --git a/libs/gst/base/gstaggregator.c b/libs/gst/base/gstaggregator.c
index b69b7dbe2f..77ea80dbf0 100644
--- a/libs/gst/base/gstaggregator.c
+++ b/libs/gst/base/gstaggregator.c
@@ -2062,6 +2062,28 @@ gst_aggregator_pad_steal_buffer (GstAggregatorPad * pad)
   return buffer;
 }
 
+/**
+ * gst_aggregator_pad_drop_buffer:
+ * @pad: the pad where to drop any pending buffer
+ *
+ * Drop the buffer currently queued in @pad.
+ *
+ * Returns: TRUE if there was a buffer queued in @pad, or FALSE if not.
+ */
+gboolean
+gst_aggregator_pad_drop_buffer (GstAggregatorPad * pad)
+{
+  GstBuffer *buf;
+
+  buf = gst_aggregator_pad_steal_buffer (pad);
+
+  if (buf == NULL)
+    return FALSE;
+
+  gst_buffer_unref (buf);
+  return TRUE;
+}
+
 /**
  * gst_aggregator_pad_get_buffer:
  * @pad: the pad to get buffer from
diff --git a/libs/gst/base/gstaggregator.h b/libs/gst/base/gstaggregator.h
index d0f1cdc885..8c4e7cff8c 100644
--- a/libs/gst/base/gstaggregator.h
+++ b/libs/gst/base/gstaggregator.h
@@ -104,6 +104,7 @@ GType gst_aggregator_pad_get_type           (void);
 
 GstBuffer * gst_aggregator_pad_steal_buffer (GstAggregatorPad *  pad);
 GstBuffer * gst_aggregator_pad_get_buffer   (GstAggregatorPad *  pad);
+gboolean    gst_aggregator_pad_drop_buffer  (GstAggregatorPad *  pad);
 gboolean    gst_aggregator_pad_is_eos       (GstAggregatorPad *  pad);
 
 /*********************