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sdrangel/dsd/p25p1_ldu1.c

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/*
* Copyright (C) 2010 DSD Author
* GPG Key ID: 0x3F1D7FD0 (74EF 430D F7F2 0A48 FCE6 F630 FAA2 635D 3F1D 7FD0)
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include "dsd.h"
#include "p25p1_const.h"
void
processLDU1 (dsd_opts * opts, dsd_state * state)
{
// extracts IMBE frames rom LDU frame
int i, j, k, dibit, stats, count, scount;
char imbe_fr[8][23];
char lcformat[9], mfid[9], lcinfo[57], lsd1[9], lsd2[9], status[25];
const int *w, *x, *y, *z;
lcformat[8] = 0;
mfid[8] = 0;
lcinfo[56] = 0;
lsd1[8] = 0;
lsd2[8] = 0;
status[24] = 0;
skipDibit (opts, state, 3);
status[0] = getDibit (opts, state) + 48;
skipDibit (opts, state, 21);
count = 57;
scount = 1;
if (opts->errorbars == 1)
{
fprintf(stderr, "e:");
}
// separate imbe frames and deinterleave
stats = 21; // we skip the status dibits that occur every 36 symbols
// the first IMBE frame starts 14 symbols before next status
// so we start counter at 22
for (i = 0; i < 9; i++)
{ // 9 IMBE frames per LDU
w = iW;
x = iX;
y = iY;
z = iZ;
for (j = 0; j < 72; j++)
{
if (stats == 35)
{
status[scount] = getDibit (opts, state) + 48;
scount++;
stats = 1;
count++;
}
else
{
stats++;
}
dibit = getDibit (opts, state);
count++;
imbe_fr[*w][*x] = (1 & (dibit >> 1)); // bit 1
imbe_fr[*y][*z] = (1 & dibit); // bit 0
w++;
x++;
y++;
z++;
}
if (state->p25kid == 0 || opts->unmute_encrypted_p25 == 1)
{
processMbeFrame (opts, state, imbe_fr, NULL, NULL);
}
// skip over non imbe data sometimes between frames
if ((i < 4) || (i == 8))
{
k = 0;
}
else if (i == 7)
{
//k=16;
k = 0;
}
else
{
k = 20;
}
for (j = 0; j < k; j++)
{
if (stats == 35)
{
status[scount] = getDibit (opts, state) + 48;
scount++;
count++;
stats = 1;
}
else
{
stats++;
}
skipDibit (opts, state, 1);
count++;
}
if (i == 1)
{
dibit = getDibit (opts, state);
lcformat[0] = (1 & (dibit >> 1)) + 48; // bit 1
lcformat[1] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcformat[2] = (1 & (dibit >> 1)) + 48; // bit 1
lcformat[3] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcformat[4] = (1 & (dibit >> 1)) + 48; // bit 1
lcformat[5] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 2);
dibit = getDibit (opts, state);
lcformat[6] = (1 & (dibit >> 1)) + 48; // bit 1
lcformat[7] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
mfid[0] = (1 & (dibit >> 1)) + 48; // bit 1
mfid[1] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
mfid[2] = (1 & (dibit >> 1)) + 48; // bit 1
mfid[3] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 2);
status[scount] = getDibit (opts, state) + 48;
scount++;
dibit = getDibit (opts, state);
mfid[4] = (1 & (dibit >> 1)) + 48; // bit 1
mfid[5] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
mfid[6] = (1 & (dibit >> 1)) + 48; // bit 1
mfid[7] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[0] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[1] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 2);
dibit = getDibit (opts, state);
lcinfo[2] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[3] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[4] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[5] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[6] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[7] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 2);
stats = 10;
}
else if (i == 2)
{
dibit = getDibit (opts, state);
lcinfo[8] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[9] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[10] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[11] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[12] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[13] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 2);
dibit = getDibit (opts, state);
lcinfo[14] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[15] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[16] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[17] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[18] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[19] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 2);
dibit = getDibit (opts, state);
lcinfo[20] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[21] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[22] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[23] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[24] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[25] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 2);
dibit = getDibit (opts, state);
lcinfo[26] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[27] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[28] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[29] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[30] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[31] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 2);
stats = 32;
}
else if (i == 3)
{
dibit = getDibit (opts, state);
lcinfo[32] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[33] = (1 & dibit) + 48; // bit 0
status[scount] = getDibit (opts, state) + 48;
scount++;
dibit = getDibit (opts, state);
lcinfo[34] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[35] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[36] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[37] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 2);
dibit = getDibit (opts, state);
lcinfo[38] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[39] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[40] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[41] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[42] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[43] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 2);
dibit = getDibit (opts, state);
lcinfo[44] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[45] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[46] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[47] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[48] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[49] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 2);
dibit = getDibit (opts, state);
lcinfo[50] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[51] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[52] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[53] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lcinfo[54] = (1 & (dibit >> 1)) + 48; // bit 1
lcinfo[55] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 2);
stats = 19;
}
else if (i == 7)
{
dibit = getDibit (opts, state);
lsd1[0] = (1 & (dibit >> 1)) + 48; // bit 1
lsd1[1] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lsd1[2] = (1 & (dibit >> 1)) + 48; // bit 1
lsd1[3] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lsd1[4] = (1 & (dibit >> 1)) + 48; // bit 1
lsd1[5] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lsd1[6] = (1 & (dibit >> 1)) + 48; // bit 1
lsd1[7] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 4);
dibit = getDibit (opts, state);
lsd2[0] = (1 & (dibit >> 1)) + 48; // bit 1
lsd2[1] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lsd2[2] = (1 & (dibit >> 1)) + 48; // bit 1
lsd2[3] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lsd2[4] = (1 & (dibit >> 1)) + 48; // bit 1
lsd2[5] = (1 & dibit) + 48; // bit 0
dibit = getDibit (opts, state);
lsd2[6] = (1 & (dibit >> 1)) + 48; // bit 1
lsd2[7] = (1 & dibit) + 48; // bit 0
skipDibit (opts, state, 4);
stats = 33;
}
}
// trailing status symbol
status[scount] = getDibit (opts, state) + 48;
scount++;
if (opts->errorbars == 1)
{
fprintf(stderr, "\n");
}
if (opts->p25status == 1)
{
fprintf(stderr, "status: %s lsd1: %s lsd2: %s\n", status, lsd1, lsd2);
}
processP25lcw (opts, state, lcformat, mfid, lcinfo);
}
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