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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 | /*****************************************************************************/ /* * 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 <stdio.h> #include <stdlib.h> #include <math.h> #include <string.h> /* -------------------------------------------------------------------- */ 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<<OFFSCOSTABBITS)\n\n", nbits); fprintf(f, "static unsigned char offscostab[OFFSCOSTABSIZE] = {\n\t"); for (i = 0; i < (1<<nbits); i++) { fprintf(f, "%4u", (int) (128+127.0*cos(i*2.0*M_PI/(1<<nbits)))); if (i < (1<<nbits)-1) fprintf(f, "%s", (i & 7) == 7 ? ",\n\t" : ","); } fprintf(f, "\n};\n\n" "#define OFFSCOS(x) offscostab[((x)>>%d)&0x%x]\n\n", 16-nbits, (1<<nbits)-1); } /* -------------------------------------------------------------------- */ static void gentbl_costab(FILE *f, unsigned int nbits) { int i; fprintf(f, "\n/*\n * more accurate cosine table\n */\n\n" "static const short costab[%d] = {", (1<<nbits)); for (i = 0; i < (1<<nbits); i++) { if (!(i & 7)) fprintf(f, "\n\t"); fprintf(f, "%6d", (int)(32767.0*cos(i*2.0*M_PI/(1<<nbits)))); if (i != ((1<<nbits)-1)) fprintf(f, ", "); } fprintf(f, "\n};\n\n#define COS(x) costab[((x)>>%d)&0x%x]\n" "#define SIN(x) COS((x)+0xc000)\n\n", 16-nbits, (1<<nbits)-1); } /* -------------------------------------------------------------------- */ #define AFSK12_SAMPLE_RATE 9600 #define AFSK12_TX_FREQ_LO 1200 #define AFSK12_TX_FREQ_HI 2200 #define AFSK12_CORRLEN 8 static void gentbl_afsk1200(FILE *f) { int i, v, sum; #define ARGLO(x) 2.0*M_PI*(double)x*(double)AFSK12_TX_FREQ_LO/(double)AFSK12_SAMPLE_RATE #define ARGHI(x) 2.0*M_PI*(double)x*(double)AFSK12_TX_FREQ_HI/(double)AFSK12_SAMPLE_RATE fprintf(f, "\n/*\n * afsk1200 specific tables\n */\n" "#define AFSK12_SAMPLE_RATE %u\n" "#define AFSK12_TX_FREQ_LO %u\n" "#define AFSK12_TX_FREQ_HI %u\n" "#define AFSK12_CORRLEN %u\n\n", AFSK12_SAMPLE_RATE, AFSK12_TX_FREQ_LO, AFSK12_TX_FREQ_HI, AFSK12_CORRLEN); fprintf(f, "static const int afsk12_tx_lo_i[] = {\n\t"); for(sum = i = 0; i < AFSK12_CORRLEN; i++) { sum += (v = 127.0*cos(ARGLO(i))); fprintf(f, " %4i%c", v, (i < AFSK12_CORRLEN-1) ? ',' : ' '); } fprintf(f, "\n};\n#define SUM_AFSK12_TX_LO_I %d\n\n" "static const int afsk12_tx_lo_q[] = {\n\t", sum); for(sum = i = 0; i < AFSK12_CORRLEN; i++) { sum += (v = 127.0*sin(ARGLO(i))); fprintf(f, " %4i%c", v, (i < AFSK12_CORRLEN-1) ? ',' : ' '); } fprintf(f, "\n};\n#define SUM_AFSK12_TX_LO_Q %d\n\n" "static const int afsk12_tx_hi_i[] = {\n\t", sum); for(sum = i = 0; i < AFSK12_CORRLEN; i++) { sum += (v = 127.0*cos(ARGHI(i))); fprintf(f, " %4i%c", v, (i < AFSK12_CORRLEN-1) ? ',' : ' '); } fprintf(f, "\n};\n#define SUM_AFSK12_TX_HI_I %d\n\n" "static const int afsk12_tx_hi_q[] = {\n\t", sum); for(sum = i = 0; i < AFSK12_CORRLEN; i++) { sum += (v = 127.0*sin(ARGHI(i))); fprintf(f, " %4i%c", v, (i < AFSK12_CORRLEN-1) ? ',' : ' '); } fprintf(f, "\n};\n#define SUM_AFSK12_TX_HI_Q %d\n\n", sum); #undef ARGLO #undef ARGHI } /* -------------------------------------------------------------------- */ static const float fsk96_tx_coeff_4[32] = { -0.001152, 0.000554, 0.002698, 0.002753, -0.002033, -0.008861, -0.008002, 0.006607, 0.023727, 0.018905, -0.018056, -0.057957, -0.044368, 0.055683, 0.207667, 0.322048, 0.322048, 0.207667, 0.055683, -0.044368, -0.057957, -0.018056, 0.018905, 0.023727, 0.006607, -0.008002, -0.008861, -0.002033, 0.002753, 0.002698, 0.000554, -0.001152 }; static const float fsk96_tx_coeff_5[40] = { -0.001009, -0.000048, 0.001376, 0.002547, 0.002061, -0.001103, -0.005795, -0.008170, -0.004017, 0.006924, 0.018225, 0.019238, 0.002925, -0.025777, -0.048064, -0.039683, 0.013760, 0.104144, 0.200355, 0.262346, 0.262346, 0.200355, 0.104144, 0.013760, -0.039683, -0.048064, -0.025777, 0.002925, 0.019238, 0.018225, 0.006924, -0.004017, -0.008170, -0.005795, -0.001103, 0.002061, 0.002547, 0.001376, -0.000048, -0.001009 }; #define HAMMING(x) (0.54-0.46*cos(2*M_PI*(x))); static inline float hamming(float x) { return 0.54-0.46*cos(2*M_PI*x); } static inline float sinc(float x) { if (x == 0) return 1; x *= M_PI; return sin(x)/x; } static void gentbl_fsk9600(FILE *f) { int i, j, k, l, m; float s; float c[44]; float min, max; fprintf(f, "\n/*\n * fsk9600 specific tables\n */\n"); min = max = 0; memset(c, 0, sizeof(c)); #if 0 memcpy(c+2, fsk96_tx_coeff_4, sizeof(fsk96_tx_coeff_4)); #else for (i = 0; i < 29; i++) c[3+i] = sinc(1.2*((i-14.0)/4.0))*hamming(i/28.0)/3.5; #endif fprintf(f, "static unsigned char fsk96_txfilt_4[] = {\n\t"); for (i = 0; i < 4; 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 < 4; m++, l++) s += c[l]; } else { for (m = 0; m < 4; 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 < 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[44]; 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); } /* -------------------------------------------------------------------- */ |