/* big endian forest * * gcc -o m10x m10x.c -lm * */ #include #include #include #include #ifdef CYGWIN #include // cygwin: _setmode() #include #endif typedef unsigned char ui8_t; typedef unsigned short ui16_t; typedef struct { int week; int gpssec; int jahr; int monat; int tag; int wday; int std; int min; int sek; double lat; double lon; double alt; double vH; double vD; double vV; double vx; double vy; double vD2; char SN[12]; } datum_t; datum_t datum; int option_verbose = 0, // ausfuehrliche Anzeige option_raw = 0, // rohe Frames option_inv = 0, // invertiert Signal option_res = 0, // genauere Bitmessung option_avg = 0, // moving average option_b = 0, option_color = 0, option_rawbits = 0, wavloaded = 0; /* -------------------------------------------------------------------------- */ /* * Convert GPS Week and Seconds to Modified Julian Day. * - Adapted from sci.astro FAQ. * - Ignores UTC leap seconds. */ void Gps2Date(long GpsWeek, long GpsSeconds, int *Year, int *Month, int *Day) { long GpsDays, Mjd; long J, C, Y, M; GpsDays = GpsWeek * 7 + (GpsSeconds / 86400); Mjd = 44244 + GpsDays; J = Mjd + 2468570; C = 4 * J / 146097; J = J - (146097 * C + 3) / 4; Y = 4000 * (J + 1) / 1461001; J = J - 1461 * Y / 4 + 31; M = 80 * J / 2447; *Day = J - 2447 * M / 80; J = M / 11; *Month = M + 2 - (12 * J); *Year = 100 * (C - 49) + Y + J; } /* -------------------------------------------------------------------------- */ /* alternative Demodulation: M10 problematisch bits_per_sample klein, sync laeuft auseinander exakte Baudrate entscheidend 9600 baud -> 9616 baud ? */ // option_b: exakte Baudrate wichtig! // im Prinzip in sync-preamble ermittelbar #define BAUD_RATE 9616 //2*4800 int sample_rate = 0, bits_sample = 0, channels = 0; float samples_per_bit = 0; int findstr(char *buf, char *str, int pos) { int i; for (i = 0; i < 4; i++) { if (buf[(pos+i)%4] != str[i]) break; } return i; } int read_wav_header(FILE *fp) { char txt[4+1] = "\0\0\0\0"; unsigned char dat[4]; int byte, p=0; if (fread(txt, 1, 4, fp) < 4) return -1; if (strncmp(txt, "RIFF", 4)) return -1; if (fread(txt, 1, 4, fp) < 4) return -1; // pos_WAVE = 8L if (fread(txt, 1, 4, fp) < 4) return -1; if (strncmp(txt, "WAVE", 4)) return -1; // pos_fmt = 12L for ( ; ; ) { if ( (byte=fgetc(fp)) == EOF ) return -1; txt[p % 4] = byte; p++; if (p==4) p=0; if (findstr(txt, "fmt ", p) == 4) break; } if (fread(dat, 1, 4, fp) < 4) return -1; if (fread(dat, 1, 2, fp) < 2) return -1; if (fread(dat, 1, 2, fp) < 2) return -1; channels = dat[0] + (dat[1] << 8); if (fread(dat, 1, 4, fp) < 4) return -1; memcpy(&sample_rate, dat, 4); //sample_rate = dat[0]|(dat[1]<<8)|(dat[2]<<16)|(dat[3]<<24); if (fread(dat, 1, 4, fp) < 4) return -1; if (fread(dat, 1, 2, fp) < 2) return -1; //byte = dat[0] + (dat[1] << 8); if (fread(dat, 1, 2, fp) < 2) return -1; bits_sample = dat[0] + (dat[1] << 8); // pos_dat = 36L + info for ( ; ; ) { if ( (byte=fgetc(fp)) == EOF ) return -1; txt[p % 4] = byte; p++; if (p==4) p=0; if (findstr(txt, "data", p) == 4) break; } if (fread(dat, 1, 4, fp) < 4) return -1; fprintf(stderr, "sample_rate: %d\n", sample_rate); fprintf(stderr, "bits : %d\n", bits_sample); fprintf(stderr, "channels : %d\n", channels); if ((bits_sample != 8) && (bits_sample != 16)) return -1; samples_per_bit = sample_rate/(float)BAUD_RATE; fprintf(stderr, "samples/bit: %.2f\n", samples_per_bit); return 0; } #define EOF_INT 0x1000000 #define LEN_movAvg 3 int movAvg[LEN_movAvg]; unsigned long sample_count = 0; double bitgrenze = 0; int read_signed_sample(FILE *fp) { // int = i32_t int byte, i, sample, s=0; // EOF -> 0x1000000 for (i = 0; i < channels; i++) { // i = 0: links bzw. mono byte = fgetc(fp); if (byte == EOF) return EOF_INT; if (i == 0) sample = byte; if (bits_sample == 16) { byte = fgetc(fp); if (byte == EOF) return EOF_INT; if (i == 0) sample += byte << 8; } } if (bits_sample == 8) s = sample-128; // 8bit: 00..FF, centerpoint 0x80=128 if (bits_sample == 16) s = (short)sample; if (option_avg) { movAvg[sample_count % LEN_movAvg] = s; s = 0; for (i = 0; i < LEN_movAvg; i++) s += movAvg[i]; s = (s+0.5) / LEN_movAvg; } sample_count++; return s; } int par=1, par_alt=1; int read_bits_fsk(FILE *fp, int *bit, int *len) { static int sample; int n, y0; float l, x1; static float x0; n = 0; do{ y0 = sample; sample = read_signed_sample(fp); if (sample == EOF_INT) return EOF; //sample_count++; // in read_signed_sample() par_alt = par; par = (sample >= 0) ? 1 : -1; // 8bit: 0..127,128..255 (-128..-1,0..127) n++; } while (par*par_alt > 0); if (!option_res) l = (float)n / samples_per_bit; else { // genauere Bitlaengen-Messung x1 = sample/(float)(sample-y0); // hilft bei niedriger sample rate l = (n+x0-x1) / samples_per_bit; // meist mehr frames (nicht immer) x0 = x1; } *len = (int)(l+0.5); if (!option_inv) *bit = (1+par_alt)/2; // oben 1, unten -1 else *bit = (1-par_alt)/2; // sdr#= 0) ? 1 : -1; // 8bit: 0..127,128..255 (-128..-1,0..127) sum += sample; n++; } while (sample_count < bitgrenze); // n < samples_per_bit if (sum >= 0) *bit = 1; else *bit = 0; if (option_inv) *bit ^= 1; return 0; } /* -------------------------------------------------------------------------- */ /* Header = Sync-Header + Sonde-Header: 1100110011001100 1010011001001100 1101010011010011 0100110101010101 0011010011001100 uudduudduudduudd ududduuddudduudd uudududduududduu dudduudududududu dduududduudduudd (oder:) dduudduudduudduu duduudduuduudduu ddududuudduduudd uduuddududududud uudduduudduudduu (komplement) 0 0 0 0 0 0 0 0 1 1 - - - 0 0 0 0 1 1 0 0 1 0 0 1 0 0 1 1 1 1 1 0 0 1 0 0 0 0 0 */ #define BITS 8 #define HEADLEN 32 // HEADLEN+HEADOFS=32 <= strlen(header) #define HEADOFS 0 // Sync-Header // Sonde-Header char header[] = "11001100110011001010011001001100"; //"011001001001111100100000"; // M10: 64 9F 20 , M2K2: 64 8F 20 //"011101101001111100100000"; // M??: 76 9F 20 //"011001000100100100001001"; // M10-dop: 64 49 09 #define FRAME_LEN 102 #define BITFRAME_LEN (FRAME_LEN*BITS) #define RAWBITFRAME_LEN (BITFRAME_LEN*2) char buf[HEADLEN]; int bufpos = -1; ui8_t frame_bytes[FRAME_LEN+10]; #define FRAMESTART 0 char frame_rawbits[RAWBITFRAME_LEN+8]; // frame_rawbits-32="11001100110011001010011001001100"; char frame_bits[BITFRAME_LEN+4]; void inc_bufpos() { bufpos = (bufpos+1) % HEADLEN; } char cb_inv(char c) { if (c == '0') return '1'; if (c == '1') return '0'; return c; } // Gefahr bei Manchester-Codierung: inverser Header wird leicht fehl-erkannt // da manchester1 und manchester2 nur um 1 bit verschoben int compare2() { int i, j; i = 0; j = bufpos; while (i < HEADLEN) { if (j < 0) j = HEADLEN-1; if (buf[j] != header[HEADOFS+HEADLEN-1-i]) break; j--; i++; } if (i == HEADLEN) return 1; i = 0; j = bufpos; while (i < HEADLEN) { if (j < 0) j = HEADLEN-1; if (buf[j] != cb_inv(header[HEADOFS+HEADLEN-1-i])) break; j--; i++; } if (i == HEADLEN) return -1; return 0; } int bits2bytes(char *bitstr, ui8_t *bytes) { int i, bit, d, byteval; int bitpos, bytepos; bitpos = 0; bytepos = 0; while (bytepos < FRAME_LEN) { byteval = 0; d = 1; for (i = 0; i < BITS; i++) { //bit=*(bitstr+bitpos+i); /* little endian */ bit=*(bitstr+bitpos+7-i); /* big endian */ // bit == 'x' ? if (bit == '1') byteval += d; else /*if ((bit == '0') || (bit == 'x'))*/ byteval += 0; d <<= 1; } bitpos += BITS; bytes[bytepos++] = byteval & 0xFF; } //while (bytepos < FRAME_LEN) bytes[bytepos++] = 0; return 0; } /* -------------------------------------------------------------------------- */ // PSK (bzw. biphase-M (oder differential Manchester?)) // nach Synchronisation: 00,11->0 ; 01,10->1 (Phasenwechsel) void psk_bpm(char* frame_rawbits, char *frame_bits) { int i; char bit; //int err = 0; for (i = 0; i < BITFRAME_LEN; i++) { //if (i > 0 && (frame_rawbits[2*i] == frame_rawbits[2*i-1])) err = 1; if (frame_rawbits[2*i] == frame_rawbits[2*i+1]) bit = '0'; else bit = '1'; //if (err) frame_bits[i] = 'x'; else frame_bits[i] = bit; //err = 0; } } /* -------------------------------------------------------------------------- */ #define pos_GPSTOW 0x0A // 4 byte #define pos_GPSlat 0x0E // 4 byte #define pos_GPSlon 0x12 // 4 byte #define pos_GPSalt 0x16 // 4 byte #define pos_GPSweek 0x20 // 2 byte //Velocity East-North-Up (ENU) #define pos_GPSvO 0x04 // 2 byte #define pos_GPSvN 0x06 // 2 byte #define pos_GPSvV 0x08 // 2 byte #define pos_SN 0x5D // 2+3 byte #define pos_Check 0x63 // 2 byte #define ANSI_COLOR_RED "\x1b[31m" #define ANSI_COLOR_GREEN "\x1b[32m" #define ANSI_COLOR_YELLOW "\x1b[33m" #define ANSI_COLOR_BLUE "\x1b[34m" #define ANSI_COLOR_MAGENTA "\x1b[35m" #define ANSI_COLOR_CYAN "\x1b[36m" #define ANSI_COLOR_RESET "\x1b[0m" #define XTERM_COLOR_BROWN "\x1b[38;5;94m" // 38;5;{0..255}m #define col_GPSweek "\x1b[38;5;20m" // 2 byte #define col_GPSTOW "\x1b[38;5;27m" // 4 byte #define col_GPSdate "\x1b[38;5;94m" //111 #define col_GPSlat "\x1b[38;5;34m" // 4 byte #define col_GPSlon "\x1b[38;5;70m" // 4 byte #define col_GPSalt "\x1b[38;5;82m" // 4 byte #define col_GPSvel "\x1b[38;5;36m" // 6 byte #define col_SN "\x1b[38;5;58m" // 3 byte #define col_Check "\x1b[38;5;11m" // 2 byte #define col_TXT "\x1b[38;5;244m" #define col_FRTXT "\x1b[38;5;244m" #define col_CSok "\x1b[38;5;2m" #define col_CSno "\x1b[38;5;1m" /* $ for code in {0..255} > do echo -e "\e[38;5;${code}m"'\\e[38;5;'"$code"m"\e[0m" > done */ int get_GPSweek() { int i; unsigned byte; ui8_t gpsweek_bytes[2]; int gpsweek; for (i = 0; i < 2; i++) { byte = frame_bytes[pos_GPSweek + i]; gpsweek_bytes[i] = byte; } gpsweek = (gpsweek_bytes[0] << 8) + gpsweek_bytes[1]; datum.week = gpsweek; if (gpsweek < 0 || gpsweek > 3000) return -1; return 0; } char weekday[7][3] = { "So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"}; int get_GPStime() { int i; unsigned byte; ui8_t gpstime_bytes[4]; int gpstime, day; // int ms; for (i = 0; i < 4; i++) { byte = frame_bytes[pos_GPSTOW + i]; gpstime_bytes[i] = byte; } gpstime = 0; for (i = 0; i < 4; i++) { gpstime |= gpstime_bytes[i] << (8*(3-i)); } //ms = gpstime % 1000; gpstime /= 1000; datum.gpssec = gpstime; day = gpstime / (24 * 3600); gpstime %= (24*3600); if ((day < 0) || (day > 6)) return -1; datum.wday = day; datum.std = gpstime/3600; datum.min = (gpstime%3600)/60; datum.sek = gpstime%60; return 0; } double B60B60 = 0xB60B60; // 2^32/360 = 0xB60B60.xxx int get_GPSlat() { int i; unsigned byte; ui8_t gpslat_bytes[4]; int gpslat; double lat; for (i = 0; i < 4; i++) { byte = frame_bytes[pos_GPSlat + i]; gpslat_bytes[i] = byte; } gpslat = 0; for (i = 0; i < 4; i++) { gpslat |= gpslat_bytes[i] << (8*(3-i)); } lat = gpslat / B60B60; datum.lat = lat; return 0; } int get_GPSlon() { int i; unsigned byte; ui8_t gpslon_bytes[4]; int gpslon; double lon; for (i = 0; i < 4; i++) { byte = frame_bytes[pos_GPSlon + i]; gpslon_bytes[i] = byte; } gpslon = 0; for (i = 0; i < 4; i++) { gpslon |= gpslon_bytes[i] << (8*(3-i)); } lon = gpslon / B60B60; datum.lon = lon; return 0; } int get_GPSalt() { int i; unsigned byte; ui8_t gpsalt_bytes[4]; int gpsalt; double alt; for (i = 0; i < 4; i++) { byte = frame_bytes[pos_GPSalt + i]; gpsalt_bytes[i] = byte; } gpsalt = 0; for (i = 0; i < 4; i++) { gpsalt |= gpsalt_bytes[i] << (8*(3-i)); } alt = gpsalt / 1000.0; datum.alt = alt; return 0; } int get_GPSvel() { int i; unsigned byte; ui8_t gpsVel_bytes[2]; short vel16; double vx, vy, dir, alpha; const double ms2kn100 = 2e2; // m/s -> knots: 1 m/s = 3.6/1.852 kn = 1.94 kn for (i = 0; i < 2; i++) { byte = frame_bytes[pos_GPSvO + i]; gpsVel_bytes[i] = byte; } vel16 = gpsVel_bytes[0] << 8 | gpsVel_bytes[1]; vx = vel16 / ms2kn100; // ost for (i = 0; i < 2; i++) { byte = frame_bytes[pos_GPSvN + i]; gpsVel_bytes[i] = byte; } vel16 = gpsVel_bytes[0] << 8 | gpsVel_bytes[1]; vy= vel16 / ms2kn100; // nord datum.vx = vx; datum.vy = vy; datum.vH = sqrt(vx*vx+vy*vy); ///* alpha = atan2(vy, vx)*180/M_PI; // ComplexPlane (von x-Achse nach links) - GeoMeteo (von y-Achse nach rechts) dir = 90-alpha; // z=x+iy= -> i*conj(z)=y+ix=re(i(pi/2-t)), Achsen und Drehsinn vertauscht if (dir < 0) dir += 360; // atan2(y,x)=atan(y/x)=pi/2-atan(x/y) , atan(1/t) = pi/2 - atan(t) datum.vD2 = dir; //*/ dir = atan2(vx, vy) * 180 / M_PI; if (dir < 0) dir += 360; datum.vD = dir; for (i = 0; i < 2; i++) { byte = frame_bytes[pos_GPSvV + i]; gpsVel_bytes[i] = byte; } vel16 = gpsVel_bytes[0] << 8 | gpsVel_bytes[1]; datum.vV = vel16 / ms2kn100; return 0; } int get_SN() { int i; unsigned byte; ui8_t sn_bytes[5]; for (i = 0; i < 11; i++) datum.SN[i] = ' '; datum.SN[11] = '\0'; for (i = 0; i < 5; i++) { byte = frame_bytes[pos_SN + i]; sn_bytes[i] = byte; } byte = sn_bytes[2]; sprintf(datum.SN, "%1X%02u", (byte>>4)&0xF, byte&0xF); byte = sn_bytes[3] | (sn_bytes[4]<<8); sprintf(datum.SN+3, " %1X %1u%04u", sn_bytes[0]&0xF, (byte>>13)&0x7, byte&0x1FFF); return 0; } /* -------------------------------------------------------------------------- */ /* g : F^n -> F^16 // checksum, linear g(m||b) = f(g(m),b) // update checksum f : F^16 x F^8 -> F^16 linear 010100001000000101000000 001010000100000010100000 000101000010000001010000 000010100001000000101000 000001010000100000010100 100000100000010000001010 000000011010100000000100 100000000101010000000010 000000001000000000000000 000000000100000000000000 000000000010000000000000 000000000001000000000000 000000000000100000000000 000000000000010000000000 000000000000001000000000 000000000000000100000000 */ int update_checkM10(int c, ui8_t b) { int c0, c1, t, t6, t7, s; c1 = c & 0xFF; // B b = (b >> 1) | ((b & 1) << 7); b ^= (b >> 2) & 0xFF; // A1 t6 = ( c & 1) ^ ((c>>2) & 1) ^ ((c>>4) & 1); t7 = ((c>>1) & 1) ^ ((c>>3) & 1) ^ ((c>>5) & 1); t = (c & 0x3F) | (t6 << 6) | (t7 << 7); // A2 s = (c >> 7) & 0xFF; s ^= (s >> 2) & 0xFF; c0 = b ^ t ^ s; return ((c1<<8) | c0) & 0xFFFF; } int checkM10(ui8_t *msg, int len) { int i, cs; cs = 0; for (i = 0; i < len; i++) { cs = update_checkM10(cs, msg[i]); } return cs & 0xFFFF; } /* -------------------------------------------------------------------------- */ int print_pos(int csOK) { int err; err = 0; err |= get_GPSweek(); err |= get_GPStime(); err |= get_GPSlat(); err |= get_GPSlon(); err |= get_GPSalt(); if (!err) { Gps2Date(datum.week, datum.gpssec, &datum.jahr, &datum.monat, &datum.tag); if (option_color) { printf(col_TXT); printf(" (W "col_GPSweek"%d"col_TXT") ", datum.week); printf(col_GPSTOW"%s"col_TXT" ", weekday[datum.wday]); printf(col_GPSdate"%04d-%02d-%02d"col_TXT" ("col_GPSTOW"%02d:%02d:%02d"col_TXT") ", datum.jahr, datum.monat, datum.tag, datum.std, datum.min, datum.sek); printf(" lat: "col_GPSlat"%.6f"col_TXT" ", datum.lat); printf(" lon: "col_GPSlon"%.6f"col_TXT" ", datum.lon); printf(" alt: "col_GPSalt"%.2f"col_TXT" ", datum.alt); if (option_verbose) { err |= get_GPSvel(); if (!err) { //if (option_verbose == 2) printf(" "col_GPSvel"(%.1f , %.1f : %.1f°)"col_TXT" ", datum.vx, datum.vy, datum.vD2); printf(" vH: "col_GPSvel"%.1f"col_TXT" D: "col_GPSvel"%.1f°"col_TXT" vV: "col_GPSvel"%.1f"col_TXT" ", datum.vH, datum.vD, datum.vV); } if (option_verbose >= 2) { get_SN(); printf(" SN: "col_SN"%s"col_TXT, datum.SN); } if (option_verbose >= 2) { fprintf(stdout, " # "); if (csOK) fprintf(stdout, " "col_CSok"[OK]"col_TXT); else fprintf(stdout, " "col_CSno"[NO]"col_TXT); } } printf(ANSI_COLOR_RESET""); } else { printf(" (W %d) ", datum.week); printf("%s ", weekday[datum.wday]); printf("%04d-%02d-%02d (%02d:%02d:%02d) ", datum.jahr, datum.monat, datum.tag, datum.std, datum.min, datum.sek); printf(" lat: %.6f ", datum.lat); printf(" lon: %.6f ", datum.lon); printf(" alt: %.2f ", datum.alt); if (option_verbose) { err |= get_GPSvel(); if (!err) { //if (option_verbose == 2) printf(" (%.1f , %.1f : %.1f°) ", datum.vx, datum.vy, datum.vD2); printf(" vH: %.1f D: %.1f° vV: %.1f ", datum.vH, datum.vD, datum.vV); } if (option_verbose >= 2) { get_SN(); printf(" SN: %s", datum.SN); } if (option_verbose >= 2) { fprintf(stdout, " # "); if (csOK) fprintf(stdout, " [OK]"); else fprintf(stdout, " [NO]"); } } } printf("\n"); } return err; } void print_frame(int pos) { int i; ui8_t byte; int cs1, cs2; psk_bpm(frame_rawbits, frame_bits); bits2bytes(frame_bits, frame_bytes); cs1 = (frame_bytes[pos_Check] << 8) | frame_bytes[pos_Check+1]; cs2 = checkM10(frame_bytes, pos_Check); if (option_rawbits == 1) { printf("%s\n", frame_rawbits); } else if (option_raw) { if (option_color && frame_bytes[1] != 0x49) { fprintf(stdout, col_FRTXT); for (i = 0; i < FRAME_LEN-1; i++) { byte = frame_bytes[i]; if ((i >= pos_GPSTOW) && (i < pos_GPSTOW+4)) fprintf(stdout, col_GPSTOW); if ((i >= pos_GPSlat) && (i < pos_GPSlat+4)) fprintf(stdout, col_GPSlat); if ((i >= pos_GPSlon) && (i < pos_GPSlon+4)) fprintf(stdout, col_GPSlon); if ((i >= pos_GPSalt) && (i < pos_GPSalt+4)) fprintf(stdout, col_GPSalt); if ((i >= pos_GPSweek) && (i < pos_GPSweek+2)) fprintf(stdout, col_GPSweek); if ((i >= pos_GPSvO) && (i < pos_GPSvO+6)) fprintf(stdout, col_GPSvel); if ((i >= pos_SN) && (i < pos_SN+5)) fprintf(stdout, col_SN); if ((i >= pos_Check) && (i < pos_Check+2)) fprintf(stdout, col_Check); fprintf(stdout, "%02x", byte); fprintf(stdout, col_FRTXT); } if (option_verbose) { fprintf(stdout, " # "col_Check"%04x"col_FRTXT, cs2); if (cs1 == cs2) fprintf(stdout, " "col_CSok"[OK]"col_TXT); else fprintf(stdout, " "col_CSno"[NO]"col_TXT); } fprintf(stdout, ANSI_COLOR_RESET"\n"); } else { for (i = 0; i < FRAME_LEN-1; i++) { byte = frame_bytes[i]; fprintf(stdout, "%02x", byte); } if (option_verbose) { fprintf(stdout, " # %04x", cs2); if (cs1 == cs2) fprintf(stdout, " [OK]"); else fprintf(stdout, " [NO]"); } fprintf(stdout, "\n"); } } else if (frame_bytes[1] == 0x49) { if (option_verbose == 3) { for (i = 0; i < FRAME_LEN-1; i++) { byte = frame_bytes[i]; fprintf(stdout, "%02x", byte); } fprintf(stdout, "\n"); } } else print_pos(cs1 == cs2); } int main(int argc, char **argv) { FILE *fp; char *fpname; int i, bit, len; int pos; int header_found = 0; #ifdef CYGWIN _setmode(fileno(stdin), _O_BINARY); // _setmode(_fileno(stdin), _O_BINARY); #endif setbuf(stdout, NULL); fpname = argv[0]; ++argv; while ((*argv) && (!wavloaded)) { if ( (strcmp(*argv, "-h") == 0) || (strcmp(*argv, "--help") == 0) ) { fprintf(stderr, "%s [options] audio.wav\n", fpname); fprintf(stderr, " options:\n"); //fprintf(stderr, " -v, --verbose\n"); fprintf(stderr, " -r, --raw\n"); fprintf(stderr, " -c, --color\n"); //fprintf(stderr, " -o, --offset\n"); return 0; } else if ( (strcmp(*argv, "-v") == 0) || (strcmp(*argv, "--verbose") == 0) ) { option_verbose = 1; } else if ( (strcmp(*argv, "-vv" ) == 0) ) option_verbose = 2; else if ( (strcmp(*argv, "-vvv") == 0) ) option_verbose = 3; else if ( (strcmp(*argv, "-r") == 0) || (strcmp(*argv, "--raw") == 0) ) { option_raw = 1; } else if ( (strcmp(*argv, "-i") == 0) || (strcmp(*argv, "--invert") == 0) ) { option_inv = 1; // nicht noetig } else if ( (strcmp(*argv, "-c") == 0) || (strcmp(*argv, "--color") == 0) ) { option_color = 1; } else if (strcmp(*argv, "--res") == 0) { option_res = 1; } else if ( (strcmp(*argv, "--avg") == 0) ) { option_avg = 1; } else if (strcmp(*argv, "-b") == 0) { option_b = 1; } else if ( (strcmp(*argv, "--rawbits") == 0) ) { option_rawbits = 1; } else { fp = fopen(*argv, "rb"); if (fp == NULL) { fprintf(stderr, "%s konnte nicht geoeffnet werden\n", *argv); return -1; } wavloaded = 1; } ++argv; } if (!wavloaded) fp = stdin; i = read_wav_header(fp); if (i) { fclose(fp); return -1; } pos = FRAMESTART; while (!read_bits_fsk(fp, &bit, &len)) { if (len == 0) { // reset_frame(); if (pos > (pos_GPSweek+2)*2*BITS) { for (i = pos; i < RAWBITFRAME_LEN; i++) frame_rawbits[i] = 0x30 + 0; print_frame(pos);//byte_count header_found = 0; pos = FRAMESTART; } //inc_bufpos(); //buf[bufpos] = 'x'; continue; // ... } for (i = 0; i < len; i++) { inc_bufpos(); buf[bufpos] = 0x30 + bit; // Ascii if (!header_found) { header_found = compare2(); } else { frame_rawbits[pos] = 0x30 + bit; // Ascii pos++; if (pos == RAWBITFRAME_LEN) { frame_rawbits[pos] = '\0'; print_frame(pos);//FRAME_LEN header_found = 0; pos = FRAMESTART; } } } if (header_found && option_b) { bitstart = 1; while ( pos < RAWBITFRAME_LEN ) { if (read_rawbit(fp, &bit) == EOF) break; frame_rawbits[pos] = 0x30 + bit; pos++; } frame_rawbits[pos] = '\0'; print_frame(pos);//FRAME_LEN header_found = 0; pos = FRAMESTART; } } printf("\n"); fclose(fp); return 0; }