66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
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/*
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* protodec.h
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*
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* (c) Ruben Undheim 2008
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef INC_PROTODEC_H
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#define INC_PROTODEC_H
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#define ST_SKURR 1
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#define ST_PREAMBLE 2
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#define ST_STARTSIGN 3
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#define ST_DATA 4
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#define ST_STOPSIGN 5
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#define DEMOD_BUFFER_LEN 450
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#define MAX_AIS_PACKET_TYPE 27
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#define NMEABUFFER_LEN 100
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struct demod_state_t {
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char chanid;
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int state;
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unsigned int offset;
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int nskurr, npreamble, nstartsign, ndata, nstopsign;
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int antallenner;
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unsigned char *buffer;
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unsigned char *rbuffer;
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char *tbuffer;
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int bufferpos;
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char last;
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int antallpreamble;
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int bitstuff;
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int receivedframes;
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int lostframes;
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int lostframes2;
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unsigned char seqnr;
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struct serial_state_t *serial;
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char *nmea;
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};
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void protodec_initialize(struct demod_state_t *d, struct serial_state_t *serial, char chanid);
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void protodec_reset(struct demod_state_t *d);
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void protodec_getdata(int bufferlengde, struct demod_state_t *d);
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void protodec_decode(char *in, int count, struct demod_state_t *d);
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#endif
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