From 5a9a2f27a782b1ee539ee8c738bb84b3eada0890 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian.droege@collabora.co.uk>
Date: Thu, 28 May 2009 15:31:01 +0200
Subject: [PATCH] Implement Adapter.Peek() that returns a GstBuffer

---
 gstreamer-sharp/Adapter.custom   |  7 +++++++
 gstreamer-sharp/glue/Makefile.am |  3 ++-
 gstreamer-sharp/glue/adapter.c   | 13 +++++++++++++
 3 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100644 gstreamer-sharp/glue/adapter.c

diff --git a/gstreamer-sharp/Adapter.custom b/gstreamer-sharp/Adapter.custom
index 1e0ea64707..da49141f50 100644
--- a/gstreamer-sharp/Adapter.custom
+++ b/gstreamer-sharp/Adapter.custom
@@ -5,3 +5,10 @@
 			gst_adapter_push(Handle, buf == null ? IntPtr.Zero : buf.OwnedHandle);
 		}
 
+
+		[DllImport ("gstreamersharpglue-0.10.dll") ]
+		static extern IntPtr gstsharp_gst_adapter_peek_buffer (IntPtr adapter, uint size);
+
+		public Gst.Buffer Peek (uint size) {
+		  return (Gst.Buffer) Gst.MiniObject.GetObject (gstsharp_gst_adapter_peek_buffer (Handle, size), true);			
+		}
diff --git a/gstreamer-sharp/glue/Makefile.am b/gstreamer-sharp/glue/Makefile.am
index 110c2bd44a..d7963eb1eb 100644
--- a/gstreamer-sharp/glue/Makefile.am
+++ b/gstreamer-sharp/glue/Makefile.am
@@ -17,7 +17,8 @@ libgstreamersharpglue_0_10_la_SOURCES =	\
 	indexentry.c \
 	indexfactory.c \
 	mixertrack.c \
-	tunernorm.c
+	tunernorm.c \
+	adapter.c
 
 nodist_libgstreamersharpglue_0_10_la_SOURCES = generated.c 
 
diff --git a/gstreamer-sharp/glue/adapter.c b/gstreamer-sharp/glue/adapter.c
new file mode 100644
index 0000000000..aa767bb33b
--- /dev/null
+++ b/gstreamer-sharp/glue/adapter.c
@@ -0,0 +1,13 @@
+#include <gst/gst.h>
+#include <gst/base/gstadapter.h>
+
+GstBuffer *
+gstsharp_gst_adapter_peek_buffer (GstAdapter *adapter, guint size) {
+  GstBuffer *ret = gst_buffer_new_and_try_alloc (size);
+
+  if (ret == NULL)
+    return NULL;
+
+  gst_adapter_copy (adapter, GST_BUFFER_DATA (ret), 0, size);
+  return ret;
+}