80 lines
2.2 KiB
C
80 lines
2.2 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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/*
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* Note: D-STAR support is very incomplete and does not work yet
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* It is unknown if the ambe3600x2250 decoder is even compatible with D-STAR
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* voice frames. If it is then the interleave pattern needs to be determined.
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* GMSK modulation optimizations will also required to get a usable bit error
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* rate. This was included mainly as an example of how other systmes might
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* be supported.
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*/
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#include "dsd.h"
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#include "dstar_const.h"
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void
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processDSTAR (dsd_opts * opts, dsd_state * state)
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{
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// extracts AMBE frames from D-STAR voice frame
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int i, j, dibit;
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char ambe_fr[4][24];
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char dstar[300];
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const int *w, *x;
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if (opts->errorbars == 1)
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{
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printf ("e:");
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}
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#ifdef DSTAR_DUMP
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printf ("\n");
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#endif
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for (j = 0; j < 210; j++) // 210 is very long but used for debugging
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{
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// voice frame
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w = dW;
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x = dX;
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for (i = 0; i < 72; i++)
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{
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dibit = getDibit (opts, state);
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dstar[i] = dibit + 48;
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ambe_fr[*w][*x] = (1 & dibit);
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w++;
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x++;
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}
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dstar[i] = 32;
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processMbeFrame (opts, state, NULL, ambe_fr, NULL);
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// data frame
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for (i = 73; i < 97; i++)
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{
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dstar[i] = getDibit (opts, state) + 48;
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}
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dstar[i] = 0;
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#ifdef DSTAR_DUMP
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printf ("%s\n", dstar);
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#endif
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}
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if (opts->errorbars == 1)
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{
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printf ("\n");
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}
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}
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