kopia lustrzana https://github.com/rs1729/RS
700 wiersze
19 KiB
C
700 wiersze
19 KiB
C
|
|
||
|
/*
|
||
|
Malaysia
|
||
|
401100 kHz (64kHz wide)
|
||
|
2023-05-12 ([ 4400] 12:20:37 alt: 12616.6 lat: 2.6785 lon: 101.5827)
|
||
|
2023-07-27 ([ 6402] 00:47:32 alt: 26835.9 lat: 2.6918 lon: 101.5025)
|
||
|
Weathex WxR-301D w/o PN9
|
||
|
*/
|
||
|
|
||
|
#include <stdio.h>
|
||
|
#include <stdlib.h>
|
||
|
#include <string.h>
|
||
|
|
||
|
|
||
|
// optional JSON "version"
|
||
|
// (a) set global
|
||
|
// gcc -DVERSION_JSN [-I<inc_dir>] ...
|
||
|
#ifdef VERSION_JSN
|
||
|
#include "version_jsn.h"
|
||
|
#endif
|
||
|
// or
|
||
|
// (b) set local compiler option, e.g.
|
||
|
// gcc -DVER_JSN_STR=\"0.0.2\" ...
|
||
|
|
||
|
|
||
|
typedef unsigned char ui8_t;
|
||
|
typedef short i16_t;
|
||
|
typedef unsigned int ui32_t;
|
||
|
|
||
|
|
||
|
int option_verbose = 0,
|
||
|
option_raw = 0,
|
||
|
option_inv = 0,
|
||
|
option_b = 0,
|
||
|
option_json = 0,
|
||
|
option_timestamp = 0,
|
||
|
option_softin = 0,
|
||
|
wavloaded = 0;
|
||
|
int wav_channel = 0; // audio channel: left
|
||
|
|
||
|
|
||
|
#define BAUD_RATE 4800.0 // (4997.2) // 5000
|
||
|
|
||
|
#define FRAMELEN 69 //64
|
||
|
#define BITFRAMELEN (8*FRAMELEN)
|
||
|
/*
|
||
|
#define HEADLEN 56
|
||
|
#define HEADOFS 0
|
||
|
char header[] = "10101010""10101010""10101010" // AA AA AA (preamble)
|
||
|
"11000001""10010100""11000001"; // C1 94 C1
|
||
|
*/
|
||
|
//preamble_header_sn1: 101010101010101010101010 1100000110010100110000011100011001111000 110001010110110111100100
|
||
|
//preamble_header_sn2: 101010101010101010101010 1100000110010100110000011100011001111000 001100100110110111100100
|
||
|
//preamble_header_sn3: 101010101010101010101010 1100000110010100110000011100011001111000 001010000110110111100100
|
||
|
|
||
|
#define HEADLEN 40 //48
|
||
|
#define HEADOFS 0
|
||
|
char header[] = "10101010""10101010""10101010" // AA AA AA (preamble)
|
||
|
"00101101""11010100"; //"10101010"; // 2D D4 55/AA
|
||
|
|
||
|
char buf[HEADLEN+1] = "xxxxxxxxxx\0";
|
||
|
int bufpos = 0;
|
||
|
|
||
|
char frame_bits[BITFRAMELEN+1];
|
||
|
ui8_t frame_bytes[FRAMELEN+1];
|
||
|
ui8_t xframe[FRAMELEN+1];
|
||
|
|
||
|
|
||
|
/* ------------------------------------------------------------------------------------ */
|
||
|
|
||
|
int sample_rate = 0, bits_sample = 0, channels = 0;
|
||
|
float samples_per_bit = 0;
|
||
|
|
||
|
int findstr(char *buff, char *str, int pos) {
|
||
|
int i;
|
||
|
for (i = 0; i < 4; i++) {
|
||
|
if (buff[(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) && strncmp(txt, "RF64", 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 && bits_sample != 32) return -1;
|
||
|
|
||
|
if (sample_rate == 900001) sample_rate -= 1;
|
||
|
|
||
|
samples_per_bit = sample_rate/(float)BAUD_RATE;
|
||
|
|
||
|
fprintf(stderr, "samples/bit: %.2f\n", samples_per_bit);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
unsigned long sample_count = 0;
|
||
|
double bitgrenze = 0;
|
||
|
|
||
|
int f32read_signed_sample(FILE *fp, float *s) {
|
||
|
int i;
|
||
|
unsigned int word = 0;
|
||
|
short *b = (short*)&word;
|
||
|
float *f = (float*)&word;
|
||
|
|
||
|
for (i = 0; i < channels; i++) {
|
||
|
|
||
|
if (fread( &word, bits_sample/8, 1, fp) != 1) return EOF;
|
||
|
|
||
|
if (i == wav_channel) { // i = 0: links bzw. mono
|
||
|
//if (bits_sample == 8) sint = b-128; // 8bit: 00..FF, centerpoint 0x80=128
|
||
|
//if (bits_sample == 16) sint = (short)b;
|
||
|
|
||
|
if (bits_sample == 32) {
|
||
|
*s = *f;
|
||
|
}
|
||
|
else {
|
||
|
if (bits_sample == 8) { *b -= 128; }
|
||
|
*s = *b/128.0;
|
||
|
if (bits_sample == 16) { *s /= 256.0; }
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
sample_count++;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int par=1, par_alt=1;
|
||
|
|
||
|
int read_bits_fsk(FILE *fp, int *bit, int *len) {
|
||
|
int n;
|
||
|
float s;
|
||
|
float l;
|
||
|
|
||
|
n = 0;
|
||
|
do {
|
||
|
if (f32read_signed_sample(fp, &s) == EOF) return EOF;
|
||
|
//sample_count++; // in f32read_signed_sample()
|
||
|
par_alt = par;
|
||
|
par = (s >= 0) ? 1 : -1;
|
||
|
n++;
|
||
|
} while (par*par_alt > 0);
|
||
|
|
||
|
l = (float)n / samples_per_bit;
|
||
|
|
||
|
*len = (int)(l+0.5);
|
||
|
|
||
|
if (!option_inv) *bit = (1+par_alt)/2; // oben 1, unten -1
|
||
|
else *bit = (1-par_alt)/2; // sdr#<rev1381?, invers: unten 1, oben -1
|
||
|
// *bit = (1+inv*par_alt)/2; // ausser inv=0
|
||
|
|
||
|
/* Y-offset ? */
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int bitstart = 0;
|
||
|
unsigned long scount = 0;
|
||
|
int read_rawbit(FILE *fp, int *bit) {
|
||
|
float s;
|
||
|
float sum;
|
||
|
|
||
|
sum = 0;
|
||
|
|
||
|
if (bitstart) {
|
||
|
scount = 0; // eigentlich scount = 1
|
||
|
bitgrenze = 0; // oder bitgrenze = -1
|
||
|
bitstart = 0;
|
||
|
}
|
||
|
bitgrenze += samples_per_bit;
|
||
|
|
||
|
do {
|
||
|
if (f32read_signed_sample(fp, &s) == EOF) return EOF;
|
||
|
//sample_count++; // in f32read_signed_sample()
|
||
|
sum += s;
|
||
|
scount++;
|
||
|
} while (scount < bitgrenze); // n < samples_per_bit
|
||
|
|
||
|
if (sum >= 0) *bit = 1;
|
||
|
else *bit = 0;
|
||
|
|
||
|
if (option_inv) *bit ^= 1;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
|
||
|
int f32soft_read(FILE *fp, float *s) {
|
||
|
unsigned int word = 0;
|
||
|
short *b = (short*)&word;
|
||
|
float *f = (float*)&word;
|
||
|
int bps = 32;
|
||
|
|
||
|
if (fread( &word, bps/8, 1, fp) != 1) return EOF;
|
||
|
|
||
|
if (bps == 32) {
|
||
|
*s = *f;
|
||
|
}
|
||
|
else {
|
||
|
if (bps == 8) { *b -= 128; }
|
||
|
*s = *b/128.0;
|
||
|
if (bps == 16) { *s /= 256.0; }
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
|
||
|
int compare() {
|
||
|
int i=0;
|
||
|
while ((i < HEADLEN) && (buf[(bufpos+i) % HEADLEN] == header[HEADLEN+HEADOFS-1-i])) {
|
||
|
i++;
|
||
|
}
|
||
|
return i;
|
||
|
}
|
||
|
|
||
|
char inv(char c) {
|
||
|
if (c == '0') return '1';
|
||
|
if (c == '1') return '0';
|
||
|
return c;
|
||
|
}
|
||
|
|
||
|
int compare2() {
|
||
|
int i=0;
|
||
|
while ((i < HEADLEN) && (buf[(bufpos+i) % HEADLEN] == inv(header[HEADLEN+HEADOFS-1-i]))) {
|
||
|
i++;
|
||
|
}
|
||
|
return i;
|
||
|
}
|
||
|
|
||
|
int bits2bytes(char *bitstr, ui8_t *bytes) {
|
||
|
int i, bit, d, byteval;
|
||
|
int bitpos, bytepos;
|
||
|
|
||
|
bitpos = 0;
|
||
|
bytepos = 0;
|
||
|
|
||
|
while (bytepos < FRAMELEN) {
|
||
|
|
||
|
byteval = 0;
|
||
|
d = 1;
|
||
|
for (i = 0; i < 8; i++) {
|
||
|
//bit = bitstr[bitpos+i]; /* little endian */
|
||
|
bit = bitstr[bitpos+7-i]; /* big endian */
|
||
|
if (bit == '1') byteval += d;
|
||
|
else /*if ((bit == '0') */ byteval += 0;
|
||
|
d <<= 1;
|
||
|
}
|
||
|
bitpos += 8;
|
||
|
bytes[bytepos++] = byteval;
|
||
|
|
||
|
}
|
||
|
|
||
|
//while (bytepos < FRAME_LEN) bytes[bytepos++] = 0;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
|
||
|
// PN9 Data Whitening
|
||
|
// cf. https://www.ti.com/lit/an/swra322/swra322.pdf
|
||
|
// https://destevez.net/2019/07/lucky-7-decoded/
|
||
|
//
|
||
|
// counter low byte: frame[OFS+4] XOR 0xCC
|
||
|
// zero bytes, frame[OFS+30]: 0C CA C9 FB 49 37 E5 A8
|
||
|
//
|
||
|
ui8_t PN9b[64] = { 0xFF, 0x87, 0xB8, 0x59, 0xB7, 0xA1, 0xCC, 0x24,
|
||
|
0x57, 0x5E, 0x4B, 0x9C, 0x0E, 0xE9, 0xEA, 0x50,
|
||
|
0x2A, 0xBE, 0xB4, 0x1B, 0xB6, 0xB0, 0x5D, 0xF1,
|
||
|
0xE6, 0x9A, 0xE3, 0x45, 0xFD, 0x2C, 0x53, 0x18,
|
||
|
0x0C, 0xCA, 0xC9, 0xFB, 0x49, 0x37, 0xE5, 0xA8,
|
||
|
0x51, 0x3B, 0x2F, 0x61, 0xAA, 0x72, 0x18, 0x84,
|
||
|
0x02, 0x23, 0x23, 0xAB, 0x63, 0x89, 0x51, 0xB3,
|
||
|
0xE7, 0x8B, 0x72, 0x90, 0x4C, 0xE8, 0xFb, 0xC1};
|
||
|
|
||
|
|
||
|
ui32_t xor8sum(ui8_t bytes[], int len) {
|
||
|
int j;
|
||
|
ui8_t xor8 = 0;
|
||
|
ui8_t sum8 = 0;
|
||
|
|
||
|
for (j = 0; j < len; j++) {
|
||
|
xor8 ^= bytes[j];
|
||
|
sum8 += bytes[j];
|
||
|
}
|
||
|
//sum8 &= 0xFF;
|
||
|
|
||
|
return (xor8 << 8) | sum8;
|
||
|
}
|
||
|
|
||
|
|
||
|
typedef struct {
|
||
|
ui32_t sn1;
|
||
|
ui32_t cnt1;
|
||
|
int chk1ok;
|
||
|
//
|
||
|
ui32_t sn2;
|
||
|
ui32_t cnt2;
|
||
|
int chk2ok; // GPS subframe
|
||
|
ui8_t hrs;
|
||
|
ui8_t min;
|
||
|
ui8_t sec;
|
||
|
float lat;
|
||
|
float lon;
|
||
|
float alt;
|
||
|
//
|
||
|
int jsn_freq; // freq/kHz (SDR)
|
||
|
} gpx_t;
|
||
|
|
||
|
gpx_t gpx;
|
||
|
|
||
|
|
||
|
#define OFS 6 // xPN9: OFS=8, different baud
|
||
|
|
||
|
int print_frame() {
|
||
|
int j;
|
||
|
int chkdat, chkval, chk_ok;
|
||
|
|
||
|
bits2bytes(frame_bits, frame_bytes);
|
||
|
|
||
|
for (j = 0; j < FRAMELEN; j++) {
|
||
|
ui8_t b = frame_bytes[j];
|
||
|
//if (j >= 6) b ^= PN9b[(j-6)%64]; // PN9 baud diff
|
||
|
xframe[j] = b;
|
||
|
}
|
||
|
|
||
|
chkval = xor8sum(xframe+OFS, 53);
|
||
|
chkdat = (xframe[OFS+53]<<8) | xframe[OFS+53+1];
|
||
|
chk_ok = (chkdat == chkval);
|
||
|
|
||
|
if (option_raw) {
|
||
|
if (option_raw == 1) {
|
||
|
for (j = 0; j < FRAMELEN; j++) {
|
||
|
//printf("%02X ", frame_bytes[j]);
|
||
|
printf("%02X ", xframe[j]);
|
||
|
}
|
||
|
printf(" # %s", chk_ok ? "[OK]" : "[NO]");
|
||
|
if (option_verbose) printf(" # [%04X:%04X]", chkdat, chkval);
|
||
|
}
|
||
|
else {
|
||
|
for (j = 0; j < BITFRAMELEN; j++) {
|
||
|
printf("%c", frame_bits[j]);
|
||
|
//if (j % 8 == 7) printf(" ");
|
||
|
}
|
||
|
}
|
||
|
printf("\n");
|
||
|
}
|
||
|
else {
|
||
|
|
||
|
ui32_t sn;
|
||
|
ui32_t cnt;
|
||
|
int val;
|
||
|
|
||
|
// SN
|
||
|
sn = xframe[OFS] | (xframe[OFS+1]<<8) | (xframe[OFS+2]<<16) | (xframe[OFS+3]<<24);
|
||
|
|
||
|
// counter
|
||
|
cnt = xframe[OFS+4] | (xframe[OFS+5]<<8);
|
||
|
|
||
|
ui8_t frid = xframe[OFS+6];
|
||
|
|
||
|
if (frid == 1)
|
||
|
{
|
||
|
gpx.chk1ok = chk_ok;
|
||
|
gpx.sn1 = sn;
|
||
|
gpx.cnt1 = cnt;
|
||
|
|
||
|
if (option_verbose) {
|
||
|
|
||
|
printf(" (%u) ", sn); //printf(" (0x%08X) ", sn);
|
||
|
printf(" [%5d] ", cnt);
|
||
|
|
||
|
printf(" %s", chk_ok ? "[OK]" : "[NO]");
|
||
|
if (option_verbose) printf(" # [%04X:%04X]", chkdat, chkval);
|
||
|
|
||
|
printf("\n");
|
||
|
}
|
||
|
}
|
||
|
else if (frid == 2)
|
||
|
{
|
||
|
gpx.chk2ok = chk_ok;
|
||
|
gpx.sn2 = sn;
|
||
|
gpx.cnt2 = cnt;
|
||
|
|
||
|
// SN
|
||
|
printf(" (%u) ", sn); //printf(" (0x%08X) ", sn);
|
||
|
|
||
|
// counter
|
||
|
printf(" [%5d] ", cnt);
|
||
|
|
||
|
// time/UTC
|
||
|
int hms;
|
||
|
hms = xframe[OFS+7] | (xframe[OFS+8]<<8) | (xframe[OFS+9]<<16);
|
||
|
hms &= 0x3FFFF;
|
||
|
//printf(" (%6d) ", hms);
|
||
|
ui8_t h = hms / 10000;
|
||
|
ui8_t m = (hms % 10000) / 100;
|
||
|
ui8_t s = hms % 100;
|
||
|
printf(" %02d:%02d:%02d ", h, m, s); // UTC
|
||
|
gpx.hrs = h;
|
||
|
gpx.min = m;
|
||
|
gpx.sec = s;
|
||
|
|
||
|
// alt
|
||
|
val = xframe[OFS+13] | (xframe[OFS+14]<<8) | (xframe[OFS+15]<<16);
|
||
|
val >>= 4;
|
||
|
val &= 0x7FFFF; // int19 ?
|
||
|
//if (val & 0x40000) val -= 0x80000; ?? or sign bit ?
|
||
|
float alt = val / 10.0f;
|
||
|
printf(" alt: %.1f ", alt); // MSL
|
||
|
gpx.alt = alt;
|
||
|
|
||
|
// lat
|
||
|
val = xframe[OFS+15] | (xframe[OFS+16]<<8) | (xframe[OFS+17]<<16) | (xframe[OFS+18]<<24);
|
||
|
val >>= 7;
|
||
|
val &= 0x1FFFFFF; // int25 ? ?? sign NMEA N/S ?
|
||
|
//if (val & 0x1000000) val -= 0x2000000; // sign bit ? (or 90 -> -90 wrap ?)
|
||
|
float lat = val / 1e5f;
|
||
|
printf(" lat: %.4f ", lat);
|
||
|
gpx.lat = lat;
|
||
|
|
||
|
// lon
|
||
|
val = xframe[OFS+19] | (xframe[OFS+20]<<8) | (xframe[OFS+21]<<16)| (xframe[OFS+22]<<24);
|
||
|
val &= 0x3FFFFFF; // int26 ? ?? sign NMEA E/W ?
|
||
|
//if (val & 0x2000000) val -= 0x4000000; // or sign bit ? (or 180 -> -180 wrap ?)
|
||
|
float lon = val / 1e5f;
|
||
|
printf(" lon: %.4f ", lon);
|
||
|
gpx.lon = lon;
|
||
|
|
||
|
// checksum
|
||
|
printf(" %s", chk_ok ? "[OK]" : "[NO]");
|
||
|
if (option_verbose) printf(" # [%04X:%04X]", chkdat, chkval);
|
||
|
|
||
|
printf("\n");
|
||
|
|
||
|
// JSON
|
||
|
if (option_json && gpx.chk2ok) {
|
||
|
if (gpx.chk1ok && gpx.sn2 == gpx.sn1 && gpx.cnt2 == gpx.cnt1) // double check, unreliable checksums
|
||
|
{
|
||
|
char *ver_jsn = NULL;
|
||
|
fprintf(stdout, "{ \"type\": \"%s\"", "WXR301");
|
||
|
fprintf(stdout, ", \"frame\": %u", gpx.cnt2);
|
||
|
fprintf(stdout, ", \"id\": \"WXR-%u\"", gpx.sn2);
|
||
|
fprintf(stdout, ", \"datetime\": \"%02d:%02d:%02dZ\", \"lat\": %.5f, \"lon\": %.5f, \"alt\": %.2f",
|
||
|
gpx.hrs, gpx.min, gpx.sec, gpx.lat, gpx.lon, gpx.alt);
|
||
|
|
||
|
// if data from subframe1,
|
||
|
// check gpx.chk1ok && gpx.sn1==gpx.sn2 && gpx.cnt1==gpx.cnt2
|
||
|
|
||
|
if (gpx.jsn_freq > 0) {
|
||
|
fprintf(stdout, ", \"freq\": %d", gpx.jsn_freq );
|
||
|
}
|
||
|
|
||
|
// Reference time/position
|
||
|
// (WxR-301D PN9)
|
||
|
fprintf(stdout, ", \"ref_datetime\": \"%s\"", "UTC" ); // {"GPS", "UTC"} GPS-UTC=leap_sec
|
||
|
fprintf(stdout, ", \"ref_position\": \"%s\"", "MSL" ); // {"GPS", "MSL"} GPS=ellipsoid , MSL=geoid
|
||
|
|
||
|
#ifdef VER_JSN_STR
|
||
|
ver_jsn = VER_JSN_STR;
|
||
|
#endif
|
||
|
if (ver_jsn && *ver_jsn != '\0') fprintf(stdout, ", \"version\": \"%s\"", ver_jsn);
|
||
|
fprintf(stdout, " }\n");
|
||
|
fprintf(stdout, "\n");
|
||
|
}
|
||
|
}
|
||
|
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int main(int argc, char **argv) {
|
||
|
|
||
|
FILE *fp;
|
||
|
char *fpname;
|
||
|
|
||
|
int i, j, h, bit, len;
|
||
|
int bit_count, frames;
|
||
|
int header_found = 0;
|
||
|
int cfreq = -1;
|
||
|
|
||
|
|
||
|
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, " -i\n");
|
||
|
fprintf(stderr, " -b\n");
|
||
|
return 0;
|
||
|
}
|
||
|
else if ( (strcmp(*argv, "-i") == 0) || (strcmp(*argv, "--invert") == 0) ) {
|
||
|
option_inv = 1;
|
||
|
}
|
||
|
else if ( (strcmp(*argv, "-v") == 0) || (strcmp(*argv, "--verbose") == 0) ) {
|
||
|
option_verbose = 1;
|
||
|
}
|
||
|
else if (strcmp(*argv, "--softin") == 0) { option_softin = 1; } // float32 soft input
|
||
|
else if (strcmp(*argv, "-b" ) == 0) { option_b = 1; }
|
||
|
else if (strcmp(*argv, "-t" ) == 0) { option_timestamp = 1; }
|
||
|
else if ( (strcmp(*argv, "-r") == 0) || (strcmp(*argv, "--raw") == 0) ) {
|
||
|
option_raw = 1;
|
||
|
}
|
||
|
else if ( (strcmp(*argv, "-R") == 0) || (strcmp(*argv, "--RAW") == 0) ) {
|
||
|
option_raw = 2;
|
||
|
}
|
||
|
else if ( (strcmp(*argv, "--json") == 0) ) {
|
||
|
option_json = 1;
|
||
|
}
|
||
|
else if ( (strcmp(*argv, "--jsn_cfq") == 0) ) {
|
||
|
int frq = -1; // center frequency / Hz
|
||
|
++argv;
|
||
|
if (*argv) frq = atoi(*argv); else return -1;
|
||
|
if (frq < 300000000) frq = -1;
|
||
|
cfreq = frq;
|
||
|
}
|
||
|
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;
|
||
|
|
||
|
|
||
|
if ( !option_softin ) {
|
||
|
i = read_wav_header(fp);
|
||
|
if (i) return -1;
|
||
|
}
|
||
|
|
||
|
|
||
|
if (cfreq > 0) gpx.jsn_freq = (cfreq+500)/1000;
|
||
|
|
||
|
|
||
|
bit_count = 0;
|
||
|
frames = 0;
|
||
|
|
||
|
if (option_softin)
|
||
|
{
|
||
|
float s = 0.0f;
|
||
|
int bit = 0;
|
||
|
sample_rate = BAUD_RATE;
|
||
|
sample_count = 0;
|
||
|
|
||
|
while (!f32soft_read(fp, &s)) {
|
||
|
|
||
|
bit = option_inv ? (s<=0.0f) : (s>=0.0f); // softbit s: bit=0 <=> s<0 , bit=1 <=> s>=0
|
||
|
|
||
|
bufpos--;
|
||
|
if (bufpos < 0) bufpos = HEADLEN-1;
|
||
|
buf[bufpos] = 0x30 + bit;
|
||
|
|
||
|
if (!header_found)
|
||
|
{
|
||
|
h = compare(); //h2 = compare2();
|
||
|
if ((h >= HEADLEN)) {
|
||
|
header_found = 1;
|
||
|
fflush(stdout);
|
||
|
if (option_timestamp) printf("<%8.3f> ", sample_count/(double)sample_rate);
|
||
|
strncpy(frame_bits, header, HEADLEN);
|
||
|
bit_count += HEADLEN;
|
||
|
frames++;
|
||
|
}
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
frame_bits[bit_count] = 0x30 + bit;
|
||
|
bit_count += 1;
|
||
|
}
|
||
|
|
||
|
if (bit_count >= BITFRAMELEN) {
|
||
|
bit_count = 0;
|
||
|
header_found = 0;
|
||
|
|
||
|
print_frame();
|
||
|
}
|
||
|
sample_count += 1;
|
||
|
}
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
while (!read_bits_fsk(fp, &bit, &len)) {
|
||
|
|
||
|
if (len == 0) {
|
||
|
bufpos--;
|
||
|
if (bufpos < 0) bufpos = HEADLEN-1;
|
||
|
buf[bufpos] = 'x';
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
|
||
|
for (j = 0; j < len; j++) {
|
||
|
bufpos--;
|
||
|
if (bufpos < 0) bufpos = HEADLEN-1;
|
||
|
buf[bufpos] = 0x30 + bit;
|
||
|
|
||
|
if (!header_found)
|
||
|
{
|
||
|
h = compare(); //h2 = compare2();
|
||
|
if ((h >= HEADLEN)) {
|
||
|
header_found = 1;
|
||
|
fflush(stdout);
|
||
|
if (option_timestamp) printf("<%8.3f> ", sample_count/(double)sample_rate);
|
||
|
strncpy(frame_bits, header, HEADLEN);
|
||
|
bit_count += HEADLEN;
|
||
|
frames++;
|
||
|
}
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
frame_bits[bit_count] = 0x30 + bit;
|
||
|
bit_count += 1;
|
||
|
}
|
||
|
|
||
|
if (bit_count >= BITFRAMELEN) {
|
||
|
bit_count = 0;
|
||
|
header_found = 0;
|
||
|
|
||
|
print_frame();
|
||
|
}
|
||
|
|
||
|
}
|
||
|
if (header_found && option_b) {
|
||
|
bitstart = 1;
|
||
|
|
||
|
while ( bit_count < BITFRAMELEN ) {
|
||
|
if (read_rawbit(fp, &bit) == EOF) break;
|
||
|
frame_bits[bit_count] = 0x30 + bit;
|
||
|
bit_count += 1;
|
||
|
}
|
||
|
|
||
|
bit_count = 0;
|
||
|
header_found = 0;
|
||
|
|
||
|
print_frame();
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
printf("\n");
|
||
|
|
||
|
fclose(fp);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|