kopia lustrzana https://github.com/f4exb/sdrangel
831 wiersze
31 KiB
C
831 wiersze
31 KiB
C
/*
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* Copyright (C) 2010 DSD Author
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* GPG Key ID: 0x3F1D7FD0 (74EF 430D F7F2 0A48 FCE6 F630 FAA2 635D 3F1D 7FD0)
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "dsd.h"
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#include "dsd_cleanupexit.h"
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#include "dsd_nocarrier.h"
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void
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printFrameSync (dsd_opts * opts, dsd_state * state, char *frametype, int offset, char *modulation)
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{
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if (opts->verbose > 0)
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{
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printf ("Sync: %s ", frametype);
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}
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if (opts->verbose > 2)
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{
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printf ("o: %4i ", offset);
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}
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if (opts->verbose > 1)
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{
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printf ("mod: %s ", modulation);
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}
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if (opts->verbose > 2)
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{
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printf ("g: %f ", state->aout_gain);
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}
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}
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int
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getFrameSync (dsd_opts * opts, dsd_state * state)
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{
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/* detects frame sync and returns frame type
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* 0 = +P25p1
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* 1 = -P25p1
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* 2 = +X2-TDMA (non inverted signal data frame)
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* 3 = +X2-TDMA (inverted signal voice frame)
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* 4 = -X2-TDMA (non inverted signal voice frame)
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* 5 = -X2-TDMA (inverted signal data frame)
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* 6 = +D-STAR
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* 7 = -D-STAR
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* 8 = +NXDN (non inverted voice frame)
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* 9 = -NXDN (inverted voice frame)
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* 10 = +DMR (non inverted singlan data frame)
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* 11 = -DMR (inverted signal voice frame)
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* 12 = +DMR (non inverted signal voice frame)
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* 13 = -DMR (inverted signal data frame)
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* 14 = +ProVoice
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* 15 = -ProVoice
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* 16 = +NXDN (non inverted data frame)
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* 17 = -NXDN (inverted data frame)
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* 18 = +D-STAR_HD
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* 19 = -D-STAR_HD
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*/
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int i, j, t, o, dibit, sync, symbol, synctest_pos, lastt;
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char synctest[25];
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char synctest18[19];
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char synctest32[33];
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char modulation[8];
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char *synctest_p;
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char synctest_buf[10240];
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int lmin, lmax, lidx;
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int lbuf[24], lbuf2[24];
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int lsum;
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char spectrum[64];
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for (i = 18; i < 24; i++)
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{
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lbuf[i] = 0;
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lbuf2[i] = 0;
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}
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// detect frame sync
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t = 0;
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synctest[24] = 0;
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synctest18[18] = 0;
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synctest32[32] = 0;
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synctest_pos = 0;
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synctest_p = synctest_buf + 10;
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sync = 0;
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lmin = 0;
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lmax = 0;
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lidx = 0;
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lastt = 0;
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state->numflips = 0;
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if ((opts->symboltiming == 1) && (state->carrier == 1))
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{
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printf ("\nSymbol Timing:\n");
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}
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while (sync == 0)
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{
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t++;
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symbol = getSymbol (opts, state, 0);
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lbuf[lidx] = symbol;
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state->sbuf[state->sidx] = symbol;
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if (lidx == 23)
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{
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lidx = 0;
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}
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else
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{
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lidx++;
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}
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if (state->sidx == (opts->ssize - 1))
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{
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state->sidx = 0;
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}
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else
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{
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state->sidx++;
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}
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if (lastt == 23)
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{
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lastt = 0;
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if (state->numflips > opts->mod_threshold)
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{
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if (opts->mod_qpsk == 1)
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{
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state->rf_mod = 1;
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}
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}
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else if (state->numflips > 18)
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{
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if (opts->mod_gfsk == 1)
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{
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state->rf_mod = 2;
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}
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}
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else
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{
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if (opts->mod_c4fm == 1)
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{
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state->rf_mod = 0;
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}
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}
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state->numflips = 0;
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}
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else
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{
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lastt++;
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}
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if (state->dibit_buf_p > state->dibit_buf + 900000)
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{
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state->dibit_buf_p = state->dibit_buf + 200;
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}
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//determine dibit state
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if (symbol > 0)
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{
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*state->dibit_buf_p = 1;
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state->dibit_buf_p++;
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dibit = 49;
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}
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else
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{
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*state->dibit_buf_p = 3;
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state->dibit_buf_p++;
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dibit = 51;
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}
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*synctest_p = dibit;
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if (t >= 18)
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{
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for (i = 0; i < 24; i++)
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{
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lbuf2[i] = lbuf[i];
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}
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qsort (lbuf2, 24, sizeof (int), comp);
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lmin = (lbuf2[2] + lbuf2[3] + lbuf2[4]) / 3;
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lmax = (lbuf2[21] + lbuf2[20] + lbuf2[19]) / 3;
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if (state->rf_mod == 1)
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{
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state->minbuf[state->midx] = lmin;
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state->maxbuf[state->midx] = lmax;
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if (state->midx == (opts->msize - 1))
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{
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state->midx = 0;
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}
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else
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{
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state->midx++;
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}
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lsum = 0;
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for (i = 0; i < opts->msize; i++)
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{
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lsum += state->minbuf[i];
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}
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state->min = lsum / opts->msize;
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lsum = 0;
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for (i = 0; i < opts->msize; i++)
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{
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lsum += state->maxbuf[i];
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}
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state->max = lsum / opts->msize;
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state->center = ((state->max) + (state->min)) / 2;
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state->maxref = ((state->max) * 0.80);
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state->minref = ((state->min) * 0.80);
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}
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else
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{
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state->maxref = state->max;
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state->minref = state->min;
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}
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if (state->rf_mod == 0)
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{
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sprintf (modulation, "C4FM");
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}
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else if (state->rf_mod == 1)
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{
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sprintf (modulation, "QPSK");
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}
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else if (state->rf_mod == 2)
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{
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sprintf (modulation, "GFSK");
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}
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if (opts->datascope == 1)
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{
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if (lidx == 0)
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{
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for (i = 0; i < 64; i++)
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{
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spectrum[i] = 0;
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}
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for (i = 0; i < 24; i++)
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{
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o = (lbuf2[i] + 32768) / 1024;
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spectrum[o]++;
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}
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if (state->symbolcnt > (4800 / opts->scoperate))
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{
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state->symbolcnt = 0;
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printf ("\n");
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printf ("Demod mode: %s Nac: %4X\n", modulation, state->nac);
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printf ("Frame Type: %s Talkgroup: %7i\n", state->ftype, state->lasttg);
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printf ("Frame Subtype: %s Source: %12i\n", state->fsubtype, state->lastsrc);
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printf ("TDMA activity: %s %s Voice errors: %s\n", state->slot0light, state->slot1light, state->err_str);
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printf ("+----------------------------------------------------------------+\n");
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for (i = 0; i < 10; i++)
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{
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printf ("|");
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for (j = 0; j < 64; j++)
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{
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if (i == 0)
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{
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if ((j == ((state->min) + 32768) / 1024) || (j == ((state->max) + 32768) / 1024))
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{
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printf ("#");
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}
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else if (j == (state->center + 32768) / 1024)
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{
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printf ("!");
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}
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else
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{
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if (j == 32)
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{
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printf ("|");
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}
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else
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{
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printf (" ");
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}
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}
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}
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else
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{
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if (spectrum[j] > 9 - i)
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{
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printf ("*");
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}
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else
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{
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if (j == 32)
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{
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printf ("|");
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}
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else
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{
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printf (" ");
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}
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}
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}
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}
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printf ("|\n");
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}
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printf ("+----------------------------------------------------------------+\n");
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}
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}
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}
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strncpy (synctest, (synctest_p - 23), 24);
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if (opts->frame_p25p1 == 1)
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{
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if (strcmp (synctest, P25P1_SYNC) == 0)
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{
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state->carrier = 1;
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state->offset = synctest_pos;
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state->max = ((state->max) + lmax) / 2;
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state->min = ((state->min) + lmin) / 2;
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sprintf (state->ftype, " P25 Phase 1 ");
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if (opts->errorbars == 1)
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{
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printFrameSync (opts, state, " +P25p1 ", synctest_pos + 1, modulation);
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}
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state->lastsynctype = 0;
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return (0);
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}
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if (strcmp (synctest, INV_P25P1_SYNC) == 0)
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{
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state->carrier = 1;
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state->offset = synctest_pos;
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state->max = ((state->max) + lmax) / 2;
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state->min = ((state->min) + lmin) / 2;
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sprintf (state->ftype, " P25 Phase 1 ");
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if (opts->errorbars == 1)
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{
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printFrameSync (opts, state, " -P25p1 ", synctest_pos + 1, modulation);
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}
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state->lastsynctype = 1;
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return (1);
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}
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}
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if (opts->frame_x2tdma == 1)
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{
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if ((strcmp (synctest, X2TDMA_BS_DATA_SYNC) == 0) || (strcmp (synctest, X2TDMA_MS_DATA_SYNC) == 0))
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{
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state->carrier = 1;
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state->offset = synctest_pos;
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state->max = ((state->max) + (lmax)) / 2;
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state->min = ((state->min) + (lmin)) / 2;
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if (opts->inverted_x2tdma == 0)
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{
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// data frame
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sprintf (state->ftype, " X2-TDMA ");
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if (opts->errorbars == 1)
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{
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printFrameSync (opts, state, " +X2-TDMA ", synctest_pos + 1, modulation);
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}
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state->lastsynctype = 2;
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return (2);
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}
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else
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{
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// inverted voice frame
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sprintf (state->ftype, " X2-TDMA ");
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if (opts->errorbars == 1)
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{
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printFrameSync (opts, state, " -X2-TDMA ", synctest_pos + 1, modulation);
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}
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if (state->lastsynctype != 3)
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{
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state->firstframe = 1;
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}
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state->lastsynctype = 3;
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return (3);
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}
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}
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if ((strcmp (synctest, X2TDMA_BS_VOICE_SYNC) == 0) || (strcmp (synctest, X2TDMA_MS_VOICE_SYNC) == 0))
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{
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state->carrier = 1;
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state->offset = synctest_pos;
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state->max = ((state->max) + lmax) / 2;
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state->min = ((state->min) + lmin) / 2;
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if (opts->inverted_x2tdma == 0)
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{
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// voice frame
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sprintf (state->ftype, " X2-TDMA ");
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if (opts->errorbars == 1)
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{
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printFrameSync (opts, state, " +X2-TDMA ", synctest_pos + 1, modulation);
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}
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if (state->lastsynctype != 4)
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{
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state->firstframe = 1;
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}
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state->lastsynctype = 4;
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return (4);
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}
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else
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{
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// inverted data frame
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sprintf (state->ftype, " X2-TDMA ");
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if (opts->errorbars == 1)
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{
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printFrameSync (opts, state, " -X2-TDMA ", synctest_pos + 1, modulation);
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}
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state->lastsynctype = 5;
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return (5);
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}
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}
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}
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if (opts->frame_dmr == 1)
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{
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if ((strcmp (synctest, DMR_MS_DATA_SYNC) == 0) || (strcmp (synctest, DMR_BS_DATA_SYNC) == 0))
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{
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state->carrier = 1;
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state->offset = synctest_pos;
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state->max = ((state->max) + (lmax)) / 2;
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state->min = ((state->min) + (lmin)) / 2;
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if (opts->inverted_dmr == 0)
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{
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// data frame
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sprintf (state->ftype, " DMR ");
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if (opts->errorbars == 1)
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{
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printFrameSync (opts, state, " +DMR ", synctest_pos + 1, modulation);
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}
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state->lastsynctype = 10;
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return (10);
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}
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else
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{
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// inverted voice frame
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sprintf (state->ftype, " DMR ");
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if (opts->errorbars == 1)
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{
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printFrameSync (opts, state, " -DMR ", synctest_pos + 1, modulation);
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}
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if (state->lastsynctype != 11)
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{
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state->firstframe = 1;
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}
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state->lastsynctype = 11;
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return (11);
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}
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}
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if ((strcmp (synctest, DMR_MS_VOICE_SYNC) == 0) || (strcmp (synctest, DMR_BS_VOICE_SYNC) == 0))
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{
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state->carrier = 1;
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state->offset = synctest_pos;
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state->max = ((state->max) + lmax) / 2;
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state->min = ((state->min) + lmin) / 2;
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if (opts->inverted_dmr == 0)
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{
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// voice frame
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sprintf (state->ftype, " DMR ");
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if (opts->errorbars == 1)
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{
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printFrameSync (opts, state, " +DMR ", synctest_pos + 1, modulation);
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}
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if (state->lastsynctype != 12)
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{
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state->firstframe = 1;
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}
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state->lastsynctype = 12;
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return (12);
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}
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else
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{
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// inverted data frame
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sprintf (state->ftype, " DMR ");
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if (opts->errorbars == 1)
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{
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printFrameSync (opts, state, " -DMR ", synctest_pos + 1, modulation);
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}
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state->lastsynctype = 13;
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return (13);
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}
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}
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}
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if (opts->frame_provoice == 1)
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{
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strncpy (synctest32, (synctest_p - 31), 32);
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if ((strcmp (synctest32, PROVOICE_SYNC) == 0) || (strcmp (synctest32, PROVOICE_EA_SYNC) == 0))
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{
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state->carrier = 1;
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state->offset = synctest_pos;
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state->max = ((state->max) + lmax) / 2;
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state->min = ((state->min) + lmin) / 2;
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sprintf (state->ftype, " ProVoice ");
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if (opts->errorbars == 1)
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{
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printFrameSync (opts, state, " -ProVoice ", synctest_pos + 1, modulation);
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}
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state->lastsynctype = 14;
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return (14);
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}
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else if ((strcmp (synctest32, INV_PROVOICE_SYNC) == 0) || (strcmp (synctest32, INV_PROVOICE_EA_SYNC) == 0))
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{
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state->carrier = 1;
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state->offset = synctest_pos;
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state->max = ((state->max) + lmax) / 2;
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state->min = ((state->min) + lmin) / 2;
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sprintf (state->ftype, " ProVoice ");
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if (opts->errorbars == 1)
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{
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printFrameSync (opts, state, " -ProVoice ", synctest_pos + 1, modulation);
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}
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state->lastsynctype = 15;
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return (15);
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}
|
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}
|
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if ((opts->frame_nxdn96 == 1) || (opts->frame_nxdn48 == 1))
|
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{
|
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strncpy (synctest18, (synctest_p - 17), 18);
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if ((strcmp (synctest18, NXDN_BS_VOICE_SYNC) == 0) || (strcmp (synctest18, NXDN_MS_VOICE_SYNC) == 0))
|
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{
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if ((state->lastsynctype == 8) || (state->lastsynctype == 16))
|
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{
|
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state->carrier = 1;
|
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state->offset = synctest_pos;
|
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state->max = ((state->max) + lmax) / 2;
|
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state->min = ((state->min) + lmin) / 2;
|
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if (state->samplesPerSymbol == 20)
|
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{
|
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sprintf (state->ftype, " NXDN48 ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, " +NXDN48 ", synctest_pos + 1, modulation);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
sprintf (state->ftype, " NXDN96 ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, " +NXDN96 ", synctest_pos + 1, modulation);
|
|
}
|
|
}
|
|
state->lastsynctype = 8;
|
|
return (8);
|
|
}
|
|
else
|
|
{
|
|
state->lastsynctype = 8;
|
|
}
|
|
}
|
|
else if ((strcmp (synctest18, INV_NXDN_BS_VOICE_SYNC) == 0) || (strcmp (synctest18, INV_NXDN_MS_VOICE_SYNC) == 0))
|
|
{
|
|
if ((state->lastsynctype == 9) || (state->lastsynctype == 17))
|
|
{
|
|
state->carrier = 1;
|
|
state->offset = synctest_pos;
|
|
state->max = ((state->max) + lmax) / 2;
|
|
state->min = ((state->min) + lmin) / 2;
|
|
if (state->samplesPerSymbol == 20)
|
|
{
|
|
sprintf (state->ftype, " NXDN48 ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, " -NXDN48 ", synctest_pos + 1, modulation);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
sprintf (state->ftype, " NXDN96 ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, " -NXDN96 ", synctest_pos + 1, modulation);
|
|
}
|
|
}
|
|
state->lastsynctype = 9;
|
|
return (9);
|
|
}
|
|
else
|
|
{
|
|
state->lastsynctype = 9;
|
|
}
|
|
}
|
|
else if ((strcmp (synctest18, NXDN_BS_DATA_SYNC) == 0) || (strcmp (synctest18, NXDN_MS_DATA_SYNC) == 0))
|
|
{
|
|
if ((state->lastsynctype == 8) || (state->lastsynctype == 16))
|
|
{
|
|
state->carrier = 1;
|
|
state->offset = synctest_pos;
|
|
state->max = ((state->max) + lmax) / 2;
|
|
state->min = ((state->min) + lmin) / 2;
|
|
if (state->samplesPerSymbol == 20)
|
|
{
|
|
sprintf (state->ftype, " NXDN48 ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, " +NXDN48 ", synctest_pos + 1, modulation);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
sprintf (state->ftype, " NXDN96 ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, " +NXDN96 ", synctest_pos + 1, modulation);
|
|
}
|
|
}
|
|
state->lastsynctype = 16;
|
|
return (16);
|
|
}
|
|
else
|
|
{
|
|
state->lastsynctype = 16;
|
|
}
|
|
}
|
|
else if ((strcmp (synctest18, INV_NXDN_BS_DATA_SYNC) == 0) || (strcmp (synctest18, INV_NXDN_MS_DATA_SYNC) == 0))
|
|
{
|
|
if ((state->lastsynctype == 9) || (state->lastsynctype == 17))
|
|
{
|
|
state->carrier = 1;
|
|
state->offset = synctest_pos;
|
|
state->max = ((state->max) + lmax) / 2;
|
|
state->min = ((state->min) + lmin) / 2;
|
|
sprintf (state->ftype, " NXDN ");
|
|
if (state->samplesPerSymbol == 20)
|
|
{
|
|
sprintf (state->ftype, " NXDN48 ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, " -NXDN48 ", synctest_pos + 1, modulation);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
sprintf (state->ftype, " NXDN96 ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, " -NXDN96 ", synctest_pos + 1, modulation);
|
|
}
|
|
}
|
|
state->lastsynctype = 17;
|
|
return (17);
|
|
}
|
|
else
|
|
{
|
|
state->lastsynctype = 17;
|
|
}
|
|
}
|
|
}
|
|
if (opts->frame_dstar == 1)
|
|
{
|
|
if (strcmp (synctest, DSTAR_SYNC) == 0)
|
|
{
|
|
state->carrier = 1;
|
|
state->offset = synctest_pos;
|
|
state->max = ((state->max) + lmax) / 2;
|
|
state->min = ((state->min) + lmin) / 2;
|
|
sprintf (state->ftype, " D-STAR ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, " +D-STAR ", synctest_pos + 1, modulation);
|
|
}
|
|
state->lastsynctype = 6;
|
|
return (6);
|
|
}
|
|
if (strcmp (synctest, INV_DSTAR_SYNC) == 0)
|
|
{
|
|
state->carrier = 1;
|
|
state->offset = synctest_pos;
|
|
state->max = ((state->max) + lmax) / 2;
|
|
state->min = ((state->min) + lmin) / 2;
|
|
sprintf (state->ftype, " D-STAR ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, " -D-STAR ", synctest_pos + 1, modulation);
|
|
}
|
|
state->lastsynctype = 7;
|
|
return (7);
|
|
}
|
|
if (strcmp (synctest, DSTAR_HD) == 0)
|
|
{
|
|
state->carrier = 1;
|
|
state->offset = synctest_pos;
|
|
state->max = ((state->max) + lmax) / 2;
|
|
state->min = ((state->min) + lmin) / 2;
|
|
sprintf (state->ftype, " D-STAR_HD ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, " +D-STAR_HD ", synctest_pos + 1, modulation);
|
|
}
|
|
state->lastsynctype = 18;
|
|
return (18);
|
|
}
|
|
if (strcmp (synctest, INV_DSTAR_HD) == 0)
|
|
{
|
|
state->carrier = 1;
|
|
state->offset = synctest_pos;
|
|
state->max = ((state->max) + lmax) / 2;
|
|
state->min = ((state->min) + lmin) / 2;
|
|
sprintf (state->ftype, " D-STAR_HD ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, " -D-STAR_HD ", synctest_pos + 1, modulation);
|
|
}
|
|
state->lastsynctype = 19;
|
|
return (19);
|
|
}
|
|
|
|
}
|
|
|
|
if ((t == 24) && (state->lastsynctype != -1))
|
|
{
|
|
if ((state->lastsynctype == 0) && ((state->lastp25type == 1) || (state->lastp25type == 2)))
|
|
{
|
|
state->carrier = 1;
|
|
state->offset = synctest_pos;
|
|
state->max = ((state->max) + (lmax)) / 2;
|
|
state->min = ((state->min) + (lmin)) / 2;
|
|
sprintf (state->ftype, "(P25 Phase 1)");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, "(+P25p1) ", synctest_pos + 1, modulation);
|
|
}
|
|
state->lastsynctype = -1;
|
|
return (0);
|
|
}
|
|
else if ((state->lastsynctype == 1) && ((state->lastp25type == 1) || (state->lastp25type == 2)))
|
|
{
|
|
state->carrier = 1;
|
|
state->offset = synctest_pos;
|
|
state->max = ((state->max) + lmax) / 2;
|
|
state->min = ((state->min) + lmin) / 2;
|
|
sprintf (state->ftype, "(P25 Phase 1)");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, "(-P25p1) ", synctest_pos + 1, modulation);
|
|
}
|
|
state->lastsynctype = -1;
|
|
return (1);
|
|
}
|
|
else if ((state->lastsynctype == 3) && ((strcmp (synctest, X2TDMA_BS_VOICE_SYNC) != 0) || (strcmp (synctest, X2TDMA_MS_VOICE_SYNC) != 0)))
|
|
{
|
|
state->carrier = 1;
|
|
state->offset = synctest_pos;
|
|
state->max = ((state->max) + lmax) / 2;
|
|
state->min = ((state->min) + lmin) / 2;
|
|
sprintf (state->ftype, "(X2-TDMA) ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, "(-X2-TDMA) ", synctest_pos + 1, modulation);
|
|
}
|
|
state->lastsynctype = -1;
|
|
return (3);
|
|
}
|
|
else if ((state->lastsynctype == 4) && ((strcmp (synctest, X2TDMA_BS_DATA_SYNC) != 0) || (strcmp (synctest, X2TDMA_MS_DATA_SYNC) != 0)))
|
|
{
|
|
state->carrier = 1;
|
|
state->offset = synctest_pos;
|
|
state->max = ((state->max) + lmax) / 2;
|
|
state->min = ((state->min) + lmin) / 2;
|
|
sprintf (state->ftype, "(X2-TDMA) ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, "(+X2-TDMA) ", synctest_pos + 1, modulation);
|
|
}
|
|
state->lastsynctype = -1;
|
|
return (4);
|
|
}
|
|
else if ((state->lastsynctype == 11) && ((strcmp (synctest, DMR_BS_VOICE_SYNC) != 0) || (strcmp (synctest, DMR_MS_VOICE_SYNC) != 0)))
|
|
{
|
|
state->carrier = 1;
|
|
state->offset = synctest_pos;
|
|
state->max = ((state->max) + lmax) / 2;
|
|
state->min = ((state->min) + lmin) / 2;
|
|
sprintf (state->ftype, "(DMR) ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, "(-DMR) ", synctest_pos + 1, modulation);
|
|
}
|
|
state->lastsynctype = -1;
|
|
return (11);
|
|
}
|
|
else if ((state->lastsynctype == 12) && ((strcmp (synctest, DMR_BS_DATA_SYNC) != 0) || (strcmp (synctest, DMR_MS_DATA_SYNC) != 0)))
|
|
{
|
|
state->carrier = 1;
|
|
state->offset = synctest_pos;
|
|
state->max = ((state->max) + lmax) / 2;
|
|
state->min = ((state->min) + lmin) / 2;
|
|
sprintf (state->ftype, "(DMR) ");
|
|
if (opts->errorbars == 1)
|
|
{
|
|
printFrameSync (opts, state, "(+DMR) ", synctest_pos + 1, modulation);
|
|
}
|
|
state->lastsynctype = -1;
|
|
return (12);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (exitflag == 1)
|
|
{
|
|
cleanupAndExit (opts, state);
|
|
}
|
|
|
|
if (synctest_pos < 10200)
|
|
{
|
|
synctest_pos++;
|
|
synctest_p++;
|
|
}
|
|
else
|
|
{
|
|
// buffer reset
|
|
synctest_pos = 0;
|
|
synctest_p = synctest_buf;
|
|
noCarrier (opts, state);
|
|
}
|
|
|
|
if (state->lastsynctype != 1)
|
|
{
|
|
if (synctest_pos >= 1800)
|
|
{
|
|
if ((opts->errorbars == 1) && (opts->verbose > 1) && (state->carrier == 1))
|
|
{
|
|
printf ("Sync: no sync\n");
|
|
}
|
|
noCarrier (opts, state);
|
|
return (-1);
|
|
}
|
|
}
|
|
}
|
|
|
|
return (-1);
|
|
}
|