/**

 * Java RTP Library (jlibrtp)

 * Copyright (C) 2006 Arne Kepp

 * 

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 * 

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

 */

package jlibrtp;

/**

 * This is the callback interface for the AVPF profile (RFC 4585)

 * 

 * It is optional, you do not have to register it.

 * 

 * If there are specific events you wish to ignore, you can simply implement

 * empty functions.

 * 

 * These are all syncrhonous, make sure to return quickly or do the handling in

 * a new thread.

 * 

 * @author Arne Kepp

 */

public interface RTCPAVPFIntf {

	/**

	 * This function is called when a Picture Loss Indication (PLI, FMT = 1) is

	 * received

	 * 

	 * @param ssrcPacketSender

	 *            the SSRC of the participant reporting loss of picture

	 */

	public void PSFBPktPictureLossReceived(long ssrcPacketSender);

	/**

	 * This function is called when a Slice Loss Indication (SLI, FMT=2) is

	 * received

	 * 

	 * @param ssrcPacketSender

	 *            the SSRC of the participant reporting loss of slice(s)

	 * @param sliceFirst

	 *            macroblock address of first macroblock

	 * @param sliceNumber

	 *            number of lost macroblocks, in scan order

	 * @param slicePictureId

	 *            the six least significant bits of the picture identifier

	 */

	public void PSFBPktSliceLossIndic(long ssrcPacketSender, int[] sliceFirst,

			int[] sliceNumber, int[] slicePictureId);

	/**

	 * This function is called when a Reference Picture Selection Indication

	 * (RPSI, FMT=3) is received

	 * 

	 * @param ssrcPacketSender

	 *            the SSRC of the participant reporting the selection

	 * @param rpsiPayloadType

	 *            the RTP payload type related to the RPSI bit string

	 * @param rpsiBitString

	 *            the RPSI information as natively defined by the video codec

	 * @param rpsiPaddingBits

	 *            the number of padding bits at the end of the string

	 */

	public void PSFBPktRefPictureSelIndic(long ssrcPacketSender,

			int rpsiPayloadType, byte[] rpsiBitString, int rpsiPaddingBits);

	/**

	 * This function is called when a Transport Layer Feedback Messages is

	 * received

	 * 

	 * @param ssrcPacketSender

	 * @param alfBitString

	 */

	public void PSFBPktAppLayerFBReceived(long ssrcPacketSender,

			byte[] alfBitString);

	/**

	 * This function is called when a Transport Layer Feedback Messages is

	 * received

	 * 

	 * @param ssrcPacketSender

	 * @param FMT

	 *            1: NACK, 0,2-30: unassigned, 31: reserved

	 * @param packetID

	 *            the RTP sequence number of the lost packet

	 * @param bitmaskLostPackets

	 *            the bitmask of following lost packets

	 */

	public void RTPFBPktReceived(long ssrcPacketSender, int FMT,

			int[] packetID, int[] bitmaskLostPackets);

}