aggregator: Add API to check if a pad has a new buffer

https://bugzilla.gnome.org/show_bug.cgi?id=795332

diff --git a/docs/libs/gstreamer-libs-sections.txt b/docs/libs/gstreamer-libs-sections.txt
index d7d56345a917156b6da61d5267fa2914ca6bbc17..1da69cea0c70a4898a733dec3c780b36d2075e43 100644 (file)
--- a/docs/libs/gstreamer-libs-sections.txt
+++ b/docs/libs/gstreamer-libs-sections.txt
@@ -252,6 +252,7 @@ gst_aggregator_pad_pop_buffer
 gst_aggregator_pad_peek_buffer
 gst_aggregator_pad_drop_buffer
 gst_aggregator_pad_is_eos
+gst_aggregator_pad_has_buffer
 <SUBSECTION Standard>
 GST_IS_AGGREGATOR_PAD
 GST_IS_AGGREGATOR_PAD_CLASS

diff --git a/libs/gst/base/gstaggregator.c b/libs/gst/base/gstaggregator.c
index 3051a1705776e926c291cf928adb6d0b0c678d8c..b67f36d6af6468a912868c89581ccef5070443f2 100644 (file)
--- a/libs/gst/base/gstaggregator.c
+++ b/libs/gst/base/gstaggregator.c
@@ -2945,6 +2945,27 @@ gst_aggregator_pad_peek_buffer (GstAggregatorPad * pad)
   return buffer;
 }
 
+/**
+ * gst_aggregator_pad_has_buffer:
+ * @pad: the pad to check the buffer on
+ *
+ * Returns: %TRUE if the pad has a buffer available as the next thing.
+ *
+ * Since: 1.16
+ */
+gboolean
+gst_aggregator_pad_has_buffer (GstAggregatorPad * pad)
+{
+  gboolean has_buffer;
+
+  PAD_LOCK (pad);
+  gst_aggregator_pad_clip_buffer_unlocked (pad);
+  has_buffer = (pad->priv->clipped_buffer != NULL);
+  PAD_UNLOCK (pad);
+
+  return has_buffer;
+}
+
 /**
  * gst_aggregator_pad_is_eos:
  * @pad: an aggregator pad

diff --git a/libs/gst/base/gstaggregator.h b/libs/gst/base/gstaggregator.h
index df4e8e318906ac5181c2d913ce80b0a8a56ceb77..122ee3e57e54b7478321c9958819be645b875422 100644 (file)
--- a/libs/gst/base/gstaggregator.h
+++ b/libs/gst/base/gstaggregator.h
@@ -112,6 +112,9 @@ GstBuffer * gst_aggregator_pad_peek_buffer  (GstAggregatorPad *  pad);
 GST_BASE_API
 gboolean    gst_aggregator_pad_drop_buffer  (GstAggregatorPad *  pad);
 
+GST_BASE_API
+gboolean    gst_aggregator_pad_has_buffer   (GstAggregatorPad * pad);
+
 GST_BASE_API
 gboolean    gst_aggregator_pad_is_eos       (GstAggregatorPad *  pad);