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https://github.com/saitohirga/WSJT-X.git
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193cbff60b
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7061 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
// qra64_subs.c
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// Fortran interface routines for QRA64
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#include "qra64.h"
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#include <stdio.h>
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//#define NICO_WANTS_SNR_DUMP
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static qra64codec *pqra64codec = NULL;
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void qra64_enc_(int x[], int y[])
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{
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if (pqra64codec==NULL) pqra64codec = qra64_init(QRA_USERAP);
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qra64_encode(pqra64codec, y, x);
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}
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void qra64_dec_(float r[], int* nc1, int* nc2, int* ng2, int* APtype,
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int* iset, int xdec[], float* snr, int* rc)
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{
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/*
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APtype:
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-1 (no AP information)
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0 [CQ/QRZ * ?_] (* means 26 or 28 bit info)
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1 [call1 * ?_] (?_ means 16-bit info or "blank")
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2 [* call2 ?_]
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3 [call1 call2 ?_]
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4 [call1 call2 grid]
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Return codes:
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-16 Failed sanity check
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-2 Decoded, but crc check failed
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-1 No decode
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0 [? ? ?] AP0 (decoding with no a-priori information)
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1 [CQ ? ?] AP27
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2 [CQ ? ] AP42
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3 [CALL ? ?] AP29
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4 [CALL ? ] AP44
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5 [CALL CALL ?] AP57
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6 [? CALL ?] AP29
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7 [? CALL ] AP44
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8 [CALL CALL G] AP72
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*/
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static int nc1z=-1;
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float EbNodBEstimated;
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int err=0;
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#ifdef NICO_WANTS_SNR_DUMP
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FILE *fout;
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#endif
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if(pqra64codec==NULL) pqra64codec = qra64_init(QRA_USERAP);
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err=qra64_apset(pqra64codec,*nc1,*nc2,*ng2,*APtype);
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if(err<0) printf("ERROR: qra64_apset returned %d\n",err);
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if(*iset==0) {
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*rc = qra64_decode(pqra64codec,&EbNodBEstimated,xdec,r);
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*snr = EbNodBEstimated - 31.0;
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#ifdef NICO_WANTS_SNR_DUMP
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fout = fopen("C:\\JTSDK\\snrdump.txt","a+");
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if ((*rc)>=0) fprintf(fout,"rc=%d snr=%.2f dB\n",*rc,EbNodBEstimated-31.0f);
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fclose(fout);
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#endif
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}
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}
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