ROHC compression/decompression library: ts_sc

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00001 /*
00002  * This program is free software; you can redistribute it and/or modify
00003  * it under the terms of the GNU General Public License as published by
00004  * the Free Software Foundation; either version 2 of the License, or
00005  * (at your option) any later version.
00006  *
00007  * This program is distributed in the hope that it will be useful,
00008  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00009  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00010  * GNU General Public License for more details.
00011  *
00012  * You should have received a copy of the GNU General Public License
00013  * along with this program; if not, write to the Free Software
00014  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00015  */
00016 
00023 #ifndef TS_SC_DECOMP_H
00024 #define TS_SC_DECOMP_H
00025 
00026 #include "rohc.h"
00027 
00028 
00035 struct ts_sc_decomp
00036 {
00038         int ts_stride;
00040         struct d_lsb_decode lsb_ts_stride;
00041 
00043         int ts_scaled;
00045         struct d_lsb_decode lsb_ts_scaled;
00046 
00048         int ts_offset;
00049 
00051         unsigned int ts;
00053         unsigned int old_ts;
00054 
00056         unsigned int sn;
00058         unsigned int old_sn;
00059 };
00060 
00061 
00062 
00063 /*
00064  * Function prototypes
00065  */
00066 
00067 void d_create_sc(struct ts_sc_decomp *ts_sc);
00068 
00069 void d_add_ts(struct ts_sc_decomp *ts_sc, unsigned int ts, unsigned int sn);
00070 void d_add_ts_stride(struct ts_sc_decomp *ts_sc, int ts_stride);
00071 
00072 unsigned int d_decode_ts(struct ts_sc_decomp *ts_sc, int ts_scaled, int nb_bits);
00073 unsigned int ts_deducted(struct ts_sc_decomp *ts_sc, unsigned int sn);
00074 
00075 void update_ts_sc(struct ts_sc_decomp *ts_sc);
00076 
00077 #endif
00078