libspandsp 0.0.4
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00001 /* 00002 * SpanDSP - a series of DSP components for telephony 00003 * 00004 * rfc2198_sim.h - Simulate the behaviour of RFC2198 (or UDPTL) redundancy. 00005 * 00006 * Written by Steve Underwood <steveu@coppice.org> 00007 * 00008 * Copyright (C) 2007 Steve Underwood 00009 * 00010 * All rights reserved. 00011 * 00012 * This program is free software; you can redistribute it and/or modify 00013 * it under the terms of the GNU Lesser General Public License version 2.1, 00014 * as published by the Free Software Foundation. 00015 * 00016 * This program is distributed in the hope that it will be useful, 00017 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00018 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00019 * GNU Lesser General Public License for more details. 00020 * 00021 * You should have received a copy of the GNU Lesser General Public 00022 * License along with this program; if not, write to the Free Software 00023 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00024 * 00025 * $Id: rfc2198_sim.h,v 1.3 2008/04/17 18:03:23 steveu Exp $ 00026 */ 00027 00028 /*! \file */ 00029 00030 /*! \page rfc2198_model_page RFC2198 simulation 00031 \section rfc2198_model_page_sec_1 What does it do? 00032 */ 00033 00034 #if !defined(_RFC2198_SIM_H_) 00035 #define _RFC2198_SIM_H_ 00036 00037 /*! The definition of an element in the packet queue */ 00038 typedef struct rfc2198_sim_queue_element_s 00039 { 00040 struct rfc2198_sim_queue_element_s *next; 00041 struct rfc2198_sim_queue_element_s *prev; 00042 int seq_no; 00043 double departure_time; 00044 double arrival_time; 00045 int len; 00046 uint8_t pkt[0]; 00047 } rfc2198_sim_queue_element_t; 00048 00049 /*! The model definition for a complete end-to-end path */ 00050 typedef struct 00051 { 00052 int redundancy_depth; 00053 int next_seq_no; 00054 g1050_state_t *g1050; 00055 rfc2198_sim_queue_element_t *first; 00056 rfc2198_sim_queue_element_t *last; 00057 uint8_t tx_pkt[32][1024]; 00058 int tx_pkt_len[32]; 00059 int tx_pkt_seq_no[32]; 00060 int next_pkt; 00061 uint8_t rx_pkt[32][1024]; 00062 int rx_pkt_len[32]; 00063 int rx_pkt_seq_no[32]; 00064 int rx_queued_pkts; 00065 } rfc2198_sim_state_t; 00066 00067 #ifdef __cplusplus 00068 extern "C" 00069 { 00070 #endif 00071 00072 rfc2198_sim_state_t *rfc2198_sim_init(int model, 00073 int speed_pattern, 00074 int packet_size, 00075 int packet_rate, 00076 int redundancy_depth); 00077 00078 int rfc2198_sim_put(rfc2198_sim_state_t *s, 00079 const uint8_t buf[], 00080 int len, 00081 int seq_no, 00082 double departure_time); 00083 00084 int rfc2198_sim_get(rfc2198_sim_state_t *s, 00085 uint8_t buf[], 00086 int max_len, 00087 double current_time, 00088 int *seq_no, 00089 double *departure_time, 00090 double *arrival_time); 00091 00092 #ifdef __cplusplus 00093 } 00094 #endif 00095 00096 #endif 00097 /*- End of file ------------------------------------------------------------*/