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diff --git a/Swiften/ScreenSharing/ReferencePictureSelection.h b/Swiften/ScreenSharing/ReferencePictureSelection.h
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+/*
+ *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+/*
+ * This file defines classes for doing reference picture selection, primarily
+ * with VP8.
+ */
+
+/* Modified by Yoann Blein, 2012 (remove time handling for simplicity)
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+namespace Swift {
+	class ReferencePictureSelection {
+		public:
+			ReferencePictureSelection();
+
+			// Report a received reference picture selection indication. This will
+			// introduce a new established reference if the received RPSI isn't too late.
+			void ReceivedRPSI(int rpsi_picture_id);
+
+			// Report a received slice loss indication. Returns true if a refresh frame
+			// must be sent to the receiver, which is accomplished by only predicting
+			// from the established reference.
+			// |now_ts| is the RTP timestamp corresponding to the current time. Typically
+			// the capture timestamp of the frame currently being processed.
+			// Returns true if it's time to encode a decoder refresh, otherwise false.
+			void ReceivedSLI();
+
+			// Returns the recommended VP8 encode flags needed. May refresh the decoder
+			// and/or update the reference buffers.
+			// |picture_id| picture id of the frame to be encoded.
+			// |send_refresh| should be set to true if a decoder refresh should be
+			// encoded, otherwise false.
+			// |now_ts| is the RTP timestamp corresponding to the current time. Typically
+			// the capture timestamp of the frame currently being processed.
+			// Returns the flags to be given to the libvpx encoder when encoding the next
+			// frame.
+			int EncodeFlags(int picture_id);
+
+			// Notify the RPS that the frame with picture id |picture_id| was encoded as
+			// a key frame, effectively updating all reference buffers.
+			void refFrameSent(int picture_id);
+
+		private:
+			bool update_golden_next_;
+			bool established_golden_;
+			bool received_ack_;
+			int last_sent_ref_picture_id_;
+			int established_ref_picture_id_;
+			bool send_refresh;
+	};
+}