www.pudn.com > soundmodem.rar > gentbl.c
/*****************************************************************************/
/*
* gentbl.c -- soundcard radio modem driver table generator.
*
* Copyright (C) 1996 Thomas Sailer (sailer@ife.ee.ethz.ch)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Please note that the GPL allows you to use the driver, NOT the radio.
* In order to use the radio, you need a license from the communications
* authority of your country.
*
*/
#include
#include
#include
/* -------------------------------------------------------------------- */
static void gentbl_offscostab(FILE *f, unsigned int nbits)
{
int i;
fprintf(f, "\n/*\n * small cosine table in U8 format\n */\n"
"#define OFFSCOSTABBITS %u\n"
"#define OFFSCOSTABSIZE (1<>%d)&0x%x]\n\n",
16-nbits, (1<>%d)&0x%x]\n"
"#define SIN(x) COS((x)+0xc000)\n\n", 16-nbits,
(1< max)
max = s;
if (s < min)
min = s;
fprintf(f, "%4d", (int)(128+127*s));
if (i < 3 || j < 255)
fprintf(f, ",%s", (j & 7) == 7
? "\n\t" : "");
}
}
#ifdef VERBOSE
fprintf(stderr, "fsk9600: txfilt4: min = %f; max = %f\n", min, max);
#endif
fprintf(f, "\n};\n\n");
min = max = 0;
memset(c, 0, sizeof(c));
#if 0
memcpy(c+2, fsk96_tx_coeff_5, sizeof(fsk96_tx_coeff_5));
#else
for (i = 0; i < 36; i++)
c[4+i] = sinc(1.2*((i-17.5)/5.0))*hamming(i/35.0)/4.5;
#endif
fprintf(f, "static unsigned char fsk96_txfilt_5[] = {\n\t");
for (i = 0; i < 5; i++) {
for (j = 0; j < 256; j++) {
for (k = 1, s = 0, l = i; k < 256; k <<= 1) {
if (j & k) {
for (m = 0; m < 5; m++, l++)
s += c[l];
} else {
for (m = 0; m < 5; m++, l++)
s -= c[l];
}
}
s *= 0.75;
if (s > max)
max = s;
if (s < min)
min = s;
fprintf(f, "%4d", (int)(128+127*s));
if (i < 4 || j < 255)
fprintf(f, ",%s", (j & 7) == 7
? "\n\t" : "");
}
}
#ifdef VERBOSE
fprintf(stderr, "fsk9600: txfilt5: min = %f; max = %f\n", min, max);
#endif
fprintf(f, "\n};\n\n");
}
/* -------------------------------------------------------------------- */
#define AFSK26_SAMPLERATE 16000
#define AFSK26_NUMCAR 2
#define AFSK26_FIRSTCAR 2000
#define AFSK26_MSK_LEN 6
#define AFSK26_RXOVER 2
#define AFSK26_DEMCORRLEN (2*AFSK26_MSK_LEN)
#define AFSK26_WINDOW(x) ((1-cos(2.0*M_PI*(x)))/2.0)
#define AFSK26_AMPL(x) (((x)?1.0:0.7))
#undef AFSK26_AMPL
#define AFSK26_AMPL(x) 1
static void gentbl_afsk2666(FILE *f)
{
int i, j, k, l, o, v, sumi, sumq;
float window[AFSK26_DEMCORRLEN*AFSK26_RXOVER];
int cfreq[AFSK26_NUMCAR];
fprintf(f, "\n/*\n * afsk2666 specific tables\n */\n"
"#define AFSK26_DEMCORRLEN %d\n"
"#define AFSK26_SAMPLERATE %d\n\n", AFSK26_DEMCORRLEN,
AFSK26_SAMPLERATE);
fprintf(f, "static const unsigned int afsk26_carfreq[%d] = { ",
AFSK26_NUMCAR);
for (i = 0; i < AFSK26_NUMCAR; i++) {
cfreq[i] = 0x10000*AFSK26_FIRSTCAR/AFSK26_SAMPLERATE+
0x10000*i/AFSK26_MSK_LEN/2;
fprintf(f, "0x%x", cfreq[i]);
if (i < AFSK26_NUMCAR-1)
fprintf(f, ", ");
}
fprintf(f, " };\n\n");
for (i = 0; i < AFSK26_DEMCORRLEN*AFSK26_RXOVER; i++)
window[i] = AFSK26_WINDOW(((float)i)/(AFSK26_DEMCORRLEN*
AFSK26_RXOVER)) * 127.0;
fprintf(f, "\nstatic const struct {\n\t"
"int i[%d];\n\tint q[%d];\n} afsk26_dem_tables[%d][%d] = {\n",
AFSK26_DEMCORRLEN, AFSK26_DEMCORRLEN, AFSK26_RXOVER, AFSK26_NUMCAR);
for (o = AFSK26_RXOVER-1; o >= 0; o--) {
fprintf(f, "\t{\n");
for (i = 0; i < AFSK26_NUMCAR; i++) {
j = cfreq[i];
fprintf(f, "\t\t{{ ");
for (l = AFSK26_DEMCORRLEN-1, k = (j * o)/AFSK26_RXOVER, sumi = 0; l >= 0;
l--, k = (k+j)&0xffffu) {
sumi += (v = AFSK26_AMPL(i)*window[l*AFSK26_RXOVER+o]*
cos(M_PI*k/32768.0));
fprintf(f, "%6d%s", v, l ? ", " : " }, { ");
}
for (l = AFSK26_DEMCORRLEN-1, k = (j * o)/AFSK26_RXOVER, sumq = 0; l >= 0;
l--, k = (k+j)&0xffffu) {
sumq += (v = AFSK26_AMPL(i)*window[l*AFSK26_RXOVER+o]*
sin(M_PI*k/32768.0));
fprintf(f, "%6d%s", v, l ? ", " : " }}");
}
if (i < 1)
fprintf(f, ",");
fprintf(f, "\n#define AFSK26_DEM_SUM_I_%d_%d %d\n"
"#define AFSK26_DEM_SUM_Q_%d_%d %d\n",
AFSK26_RXOVER-1-o, i, sumi, AFSK26_RXOVER-1-o, i, sumq);
}
fprintf(f, "\t}%s\n", o ? "," : "");
}
fprintf(f, "};\n\n");
}
/* -------------------------------------------------------------------- */
#define ATAN_TABLEN 1024
static void gentbl_atantab(FILE *f)
{
int i;
short x;
fprintf(f, "\n/*\n"
" * arctan table (indexed by i/q; should really be indexed by i/(i+q)\n"
" */\n""#define ATAN_TABLEN %d\n\n"
"static const unsigned short atan_tab[ATAN_TABLEN+2] = {",
ATAN_TABLEN);
for (i = 0; i <= ATAN_TABLEN; i++) {
if (!(i & 7))
fprintf(f, "\n\t");
x = atan(i / (float)ATAN_TABLEN) / M_PI * 0x8000;
fprintf(f, "%6d, ", x);
}
fprintf(f, "%6d\n};\n\n", x);
}
/* -------------------------------------------------------------------- */
#define PSK48_TXF_OVERSAMPLING 5
#define PSK48_TXF_NUMSAMPLES 16
#define PSK48_RXF_LEN 64
static const float psk48_tx_coeff[80] = {
-0.000379, -0.000640, -0.000000, 0.000772,
0.000543, -0.000629, -0.001187, -0.000000,
0.001634, 0.001183, -0.001382, -0.002603,
-0.000000, 0.003481, 0.002472, -0.002828,
-0.005215, -0.000000, 0.006705, 0.004678,
-0.005269, -0.009584, -0.000000, 0.012065,
0.008360, -0.009375, -0.017028, -0.000000,
0.021603, 0.015123, -0.017229, -0.032012,
-0.000000, 0.043774, 0.032544, -0.040365,
-0.084963, -0.000000, 0.201161, 0.374060,
0.374060, 0.201161, -0.000000, -0.084963,
-0.040365, 0.032544, 0.043774, -0.000000,
-0.032012, -0.017229, 0.015123, 0.021603,
-0.000000, -0.017028, -0.009375, 0.008360,
0.012065, -0.000000, -0.009584, -0.005269,
0.004678, 0.006705, -0.000000, -0.005215,
-0.002828, 0.002472, 0.003481, -0.000000,
-0.002603, -0.001382, 0.001183, 0.001634,
-0.000000, -0.001187, -0.000629, 0.000543,
0.000772, -0.000000, -0.000640, -0.000379
};
static const float psk48_rx_coeff[PSK48_RXF_LEN] = {
-0.000219, 0.000360, 0.000873, 0.001080,
0.000747, -0.000192, -0.001466, -0.002436,
-0.002328, -0.000699, 0.002101, 0.004809,
0.005696, 0.003492, -0.001633, -0.007660,
-0.011316, -0.009627, -0.001780, 0.009712,
0.019426, 0.021199, 0.011342, -0.008583,
-0.030955, -0.044093, -0.036634, -0.002651,
0.054742, 0.123101, 0.184198, 0.220219,
0.220219, 0.184198, 0.123101, 0.054742,
-0.002651, -0.036634, -0.044093, -0.030955,
-0.008583, 0.011342, 0.021199, 0.019426,
0.009712, -0.001780, -0.009627, -0.011316,
-0.007660, -0.001633, 0.003492, 0.005696,
0.004809, 0.002101, -0.000699, -0.002328,
-0.002436, -0.001466, -0.000192, 0.000747,
0.001080, 0.000873, 0.000360, -0.000219
};
static void gentbl_psk4800(FILE *f)
{
int i, j, k;
short x;
fprintf(f, "\n/*\n * psk4800 specific tables\n */\n"
"#define PSK48_TXF_OVERSAMPLING %d\n"
"#define PSK48_TXF_NUMSAMPLES %d\n\n"
"#define PSK48_SAMPLERATE 8000\n"
"#define PSK48_CAR_FREQ 2000\n"
"#define PSK48_PSK_LEN 5\n"
"#define PSK48_RXF_LEN %u\n"
"#define PSK48_PHASEINC (0x10000*PSK48_CAR_FREQ/PSK48_SAMPLERATE)\n"
"#define PSK48_SPHASEINC (0x10000/(2*PSK48_PSK_LEN))\n\n"
"static const short psk48_tx_table[PSK48_TXF_OVERSAMPLING*"
"PSK48_TXF_NUMSAMPLES*8*2] = {",
PSK48_TXF_OVERSAMPLING, PSK48_TXF_NUMSAMPLES, PSK48_RXF_LEN);
for (i = 0; i < PSK48_TXF_OVERSAMPLING; i++) {
for (j = 0; j < PSK48_TXF_NUMSAMPLES; j++) {
fprintf(f, "\n\t");
for (k = 0; k < 8; k++) {
x = 32767.0 * cos(k*M_PI/4.0) *
psk48_tx_coeff[j * PSK48_TXF_OVERSAMPLING + i];
fprintf(f, "%6d, ", x);
}
fprintf(f, "\n\t");
for (k = 0; k < 8; k++) {
x = 32767.0 * sin(k*M_PI/4.0) *
psk48_tx_coeff[j * PSK48_TXF_OVERSAMPLING + i];
fprintf(f, "%6d", x);
if (k != 7 || j != PSK48_TXF_NUMSAMPLES-1 ||
i != PSK48_TXF_OVERSAMPLING-1)
fprintf(f, ", ");
}
}
}
fprintf(f, "\n};\n\n");
fprintf(f, "static const short psk48_rx_coeff[PSK48_RXF_LEN] = {\n\t");
for (i = 0; i < PSK48_RXF_LEN; i++) {
fprintf(f, "%6d", (int)(psk48_rx_coeff[i]*32767.0));
if (i < PSK48_RXF_LEN-1)
fprintf(f, ",%s", (i & 7) == 7 ? "\n\t" : "");
}
fprintf(f, "\n};\n\n");
}
/* -------------------------------------------------------------------- */
static void gentbl_hapn4800(FILE *f)
{
int i, j, k, l;
float s;
float c[40];
float min, max;
fprintf(f, "\n/*\n * hapn4800 specific tables\n */\n\n");
/*
* firstly generate tables for the FM transmitter modulator
*/
min = max = 0;
memset(c, 0, sizeof(c));
for (i = 0; i < 24; i++)
c[8+i] = sinc(1.5*((i-11.5)/8.0))*hamming(i/23.0)/2.4;
for (i = 0; i < 24; i++)
c[i] -= c[i+8];
fprintf(f, "static unsigned char hapn48_txfilt_8[] = {\n\t");
for (i = 0; i < 8; i++) {
for (j = 0; j < 16; j++) {
for (k = 1, s = 0, l = i; k < 16; k <<= 1, l += 8) {
if (j & k)
s += c[l];
else
s -= c[l];
}
if (s > max)
max = s;
if (s < min)
min = s;
fprintf(f, "%4d", (int)(128+127*s));
if (i < 7 || j < 15)
fprintf(f, ",%s", (j & 7) == 7
? "\n\t" : "");
}
}
#ifdef VERBOSE
fprintf(stderr, "hapn4800: txfilt8: min = %f; max = %f\n", min, max);
#endif
fprintf(f, "\n};\n\n");
min = max = 0;
memset(c, 0, sizeof(c));
for (i = 0; i < 30; i++)
c[10+i] = sinc(1.5*((i-14.5)/10.0))*hamming(i/29.0)/2.4;
for (i = 0; i < 30; i++)
c[i] -= c[i+10];
fprintf(f, "static unsigned char hapn48_txfilt_10[] = {\n\t");
for (i = 0; i < 10; i++) {
for (j = 0; j < 16; j++) {
for (k = 1, s = 0, l = i; k < 16; k <<= 1, l += 10) {
if (j & k)
s += c[l];
else
s -= c[l];
}
if (s > max)
max = s;
if (s < min)
min = s;
fprintf(f, "%4d", (int)(128+127*s));
if (i < 9 || j < 15)
fprintf(f, ",%s", (j & 7) == 7
? "\n\t" : "");
}
}
#ifdef VERBOSE
fprintf(stderr, "hapn4800: txfilt10: min = %f; max = %f\n", min, max);
#endif
fprintf(f, "\n};\n\n");
/*
* secondly generate tables for the PM transmitter modulator
*/
min = max = 0;
memset(c, 0, sizeof(c));
for (i = 0; i < 25; i++)
c[i] = sinc(1.4*((i-12.0)/8.0))*hamming(i/24.0)/6.3;
for (i = 0; i < 25; i++)
for (j = 1; j < 8; j++)
c[i] += c[i+j];
fprintf(f, "static unsigned char hapn48_txfilt_pm8[] = {\n\t");
for (i = 0; i < 8; i++) {
for (j = 0; j < 16; j++) {
for (k = 1, s = 0, l = i; k < 16; k <<= 1, l += 8) {
if (j & k)
s += c[l];
else
s -= c[l];
}
if (s > max)
max = s;
if (s < min)
min = s;
fprintf(f, "%4d", (int)(128+127*s));
if (i < 7 || j < 15)
fprintf(f, ",%s", (j & 7) == 7
? "\n\t" : "");
}
}
#ifdef VERBOSE
fprintf(stderr, "hapn4800: txfiltpm8: min = %f; max = %f\n", min, max);
#endif
fprintf(f, "\n};\n\n");
min = max = 0;
memset(c, 0, sizeof(c));
for (i = 0; i < 31; i++)
c[10+i] = sinc(1.4*((i-15.0)/10.0))*hamming(i/30.0)/7.9;
for (i = 0; i < 31; i++)
for (j = 1; j < 10; j++)
c[i] += c[i+j];
fprintf(f, "static unsigned char hapn48_txfilt_pm10[] = {\n\t");
for (i = 0; i < 10; i++) {
for (j = 0; j < 16; j++) {
for (k = 1, s = 0, l = i; k < 16; k <<= 1, l += 10) {
if (j & k)
s += c[l];
else
s -= c[l];
}
if (s > max)
max = s;
if (s < min)
min = s;
fprintf(f, "%4d", (int)(128+127*s));
if (i < 9 || j < 15)
fprintf(f, ",%s", (j & 7) == 7
? "\n\t" : "");
}
}
#ifdef VERBOSE
fprintf(stderr, "hapn4800: txfiltpm10: min = %f; max = %f\n", min, max);
#endif
fprintf(f, "\n};\n\n");
}
/* -------------------------------------------------------------------- */
#define AFSK24_SAMPLERATE 16000
#define AFSK24_CORRLEN 14
static void gentbl_afsk2400(FILE *f, float tcm3105clk)
{
int i, sum, v;
fprintf(f, "\n/*\n * afsk2400 specific tables (tcm3105 clk %7fHz)\n */\n"
"#define AFSK24_TX_FREQ_LO %d\n"
"#define AFSK24_TX_FREQ_HI %d\n"
"#define AFSK24_BITPLL_INC %d\n"
"#define AFSK24_SAMPLERATE %d\n\n", tcm3105clk,
(int)(tcm3105clk/3694.0), (int)(tcm3105clk/2015.0),
0x10000*2400/AFSK24_SAMPLERATE, AFSK24_SAMPLERATE);
#define ARGLO(x) 2.0*M_PI*(double)x*(tcm3105clk/3694.0)/(double)AFSK24_SAMPLERATE
#define ARGHI(x) 2.0*M_PI*(double)x*(tcm3105clk/2015.0)/(double)AFSK24_SAMPLERATE
#define WINDOW(x) hamming((float)(x)/(AFSK24_CORRLEN-1.0))
fprintf(f, "static const int afsk24_tx_lo_i[] = {\n\t");
for(sum = i = 0; i < AFSK24_CORRLEN; i++) {
sum += (v = 127.0*cos(ARGLO(i))*WINDOW(i));
fprintf(f, " %4i%c", v, (i < AFSK24_CORRLEN-1) ? ',' : ' ');
}
fprintf(f, "\n};\n#define SUM_AFSK24_TX_LO_I %d\n\n"
"static const int afsk24_tx_lo_q[] = {\n\t", sum);
for(sum = i = 0; i < AFSK24_CORRLEN; i++) {
sum += (v = 127.0*sin(ARGLO(i))*WINDOW(i));
fprintf(f, " %4i%c", v, (i < AFSK24_CORRLEN-1) ? ',' : ' ');
}
fprintf(f, "\n};\n#define SUM_AFSK24_TX_LO_Q %d\n\n"
"static const int afsk24_tx_hi_i[] = {\n\t", sum);
for(sum = i = 0; i < AFSK24_CORRLEN; i++) {
sum += (v = 127.0*cos(ARGHI(i))*WINDOW(i));
fprintf(f, " %4i%c", v, (i < AFSK24_CORRLEN-1) ? ',' : ' ');
}
fprintf(f, "\n};\n#define SUM_AFSK24_TX_HI_I %d\n\n"
"static const int afsk24_tx_hi_q[] = {\n\t", sum);
for(sum = i = 0; i < AFSK24_CORRLEN; i++) {
sum += (v = 127.0*sin(ARGHI(i))*WINDOW(i));
fprintf(f, " %4i%c", v, (i < AFSK24_CORRLEN-1) ? ',' : ' ');
}
fprintf(f, "\n};\n#define SUM_AFSK24_TX_HI_Q %d\n\n", sum);
#undef ARGLO
#undef ARGHI
#undef WINDOW
}
/* -------------------------------------------------------------------- */
static char *progname;
static void gentbl_banner(FILE *f)
{
fprintf(f, "/*\n * THIS FILE IS GENERATED AUTOMATICALLY BY %s, "
"DO NOT EDIT!\n */\n\n", progname);
}
/* -------------------------------------------------------------------- */
int main(int argc, char *argv[])
{
FILE *f;
progname = argv[0];
if (!(f = fopen("sm_tbl_afsk1200.h", "w")))
exit(1);
gentbl_banner(f);
gentbl_offscostab(f, 6);
gentbl_costab(f, 6);
gentbl_afsk1200(f);
fclose(f);
if (!(f = fopen("sm_tbl_afsk2666.h", "w")))
exit(1);
gentbl_banner(f);
gentbl_offscostab(f, 6);
gentbl_costab(f, 6);
gentbl_afsk2666(f);
fclose(f);
if (!(f = fopen("sm_tbl_psk4800.h", "w")))
exit(1);
gentbl_banner(f);
gentbl_psk4800(f);
gentbl_costab(f, 8);
gentbl_atantab(f);
fclose(f);
if (!(f = fopen("sm_tbl_hapn4800.h", "w")))
exit(1);
gentbl_banner(f);
gentbl_hapn4800(f);
fclose(f);
if (!(f = fopen("sm_tbl_fsk9600.h", "w")))
exit(1);
gentbl_banner(f);
gentbl_fsk9600(f);
fclose(f);
if (!(f = fopen("sm_tbl_afsk2400_8.h", "w")))
exit(1);
gentbl_banner(f);
gentbl_offscostab(f, 6);
gentbl_costab(f, 6);
gentbl_afsk2400(f, 8000000);
fclose(f);
if (!(f = fopen("sm_tbl_afsk2400_7.h", "w")))
exit(1);
gentbl_banner(f);
gentbl_offscostab(f, 6);
gentbl_costab(f, 6);
gentbl_afsk2400(f, 7372800);
fclose(f);
exit(0);
}
/* -------------------------------------------------------------------- */