kopia lustrzana https://github.com/projecthorus/radiosonde_auto_rx
Mark Jessop
GitHub
commit
d369733971
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@ -244,26 +244,14 @@ class SondeDecoder(object):
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elif self.sonde_type == "DFM":
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# DFM06/DFM09 Sondes.
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# We need to handle inversion of DFM sondes in a bit of an odd way.
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# Using our current receive chain (rtl_fm), rs_detect will detect:
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# DFM06's as non-inverted ('DFM')
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# DFM09's as inverted ('-DFM')
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# HOWEVER, dfm09dm_ecc makes the assumption that the incoming signal is a DFM09, and
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# inverts by default.
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# So, to be able to support DFM06s, we need to flip the invert flag.
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self.inverted = not self.inverted
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if self.inverted:
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_invert_flag = "-i"
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else:
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_invert_flag = ""
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# As of 2019-02-10, dfm09ecc auto-detects if the signal is inverted,
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# so we don't need to specify an invert flag.
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# Note: Have removed a 'highpass 20' filter from the sox line, will need to re-evaluate if adding that is useful in the future.
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decode_cmd = "%s %s-p %d -d %s %s-M fm -F9 -s 15k -f %d 2>/dev/null |" % (self.sdr_fm, bias_option, int(self.ppm), str(self.device_idx), gain_param, self.sonde_freq)
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decode_cmd += "sox -t raw -r 15k -e s -b 16 -c 1 - -r 48000 -b 8 -t wav - highpass 20 lowpass 2000 2>/dev/null |"
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# DFM decoder
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decode_cmd += "./dfm09ecc -vv --ecc --json %s 2>/dev/null" % _invert_flag
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decode_cmd += "./dfm09ecc -vv --ecc --json --auto 2>/dev/null"
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elif self.sonde_type == "M10":
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# M10 Sondes
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@ -40,22 +40,33 @@ typedef struct {
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double dir; double horiV; double vertV;
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float meas24[5];
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float status[2];
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float _frmcnt;
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char sonde_id[16];
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} gpx_t;
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gpx_t gpx;
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typedef struct {
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int ec;
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float ts;
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} pcksts_t;
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pcksts_t pck[9];
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char dat_str[9][13+1];
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// Buffer to store sonde ID
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char sonde_id[] = "DFMxx-xxxxxxxx";
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// JSON Buffer to store sonde ID
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char json_sonde_id[] = "DFMxx-xxxxxxxxyy";
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int option_verbose = 0, // ausfuehrliche Anzeige
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option_raw = 0, // rohe Frames
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option_inv = 0, // invertiert Signal
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option_auto = 0,
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option_dist = 0, // continuous pcks 0..8
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option_ecc = 0,
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option_ptu = 0,
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option_ths = 0,
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option_json = 0, // JSON blob output (for auto_rx)
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option_json = 0, // JSON blob output (for auto_rx)
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wavloaded = 0;
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int wav_channel = 0; // audio channel: left
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@ -154,9 +165,13 @@ int check(ui8_t code[8]) {
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int hamming(ui8_t *ham, int L, ui8_t *sym) {
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int i, j;
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int ret = 0; // L = 7, 13
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int ecc = 0, ret = 0; // L = 7, 13
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for (i = 0; i < L; i++) { // L * 2 nibble (data+parity)
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if (option_ecc) ret |= check(ham+B*i);
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if (option_ecc) {
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ecc = check(ham+B*i);
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if (ecc > 0) ret |= (1<<i);
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if (ecc < 0) ret |= ecc; // -1
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}
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for (j = 0; j < S; j++) { // systematic: bits 0..S-1 data
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sym[S*i+j] = ham[B*i+j];
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}
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@ -173,7 +188,7 @@ char nib2chr(ui8_t nib) {
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return c;
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}
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int dat_out(ui8_t *dat_bits) {
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int dat_out(ui8_t *dat_bits, int ec) {
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int i, ret = 0;
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static int fr_id;
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// int jahr = 0, monat = 0, tag = 0, std = 0, min = 0;
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@ -185,17 +200,29 @@ int dat_out(ui8_t *dat_bits) {
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fr_id = bits2val(dat_bits+48, 4);
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if (fr_id >= 0 && fr_id <= 8) {
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if (fr_id >= 0 && fr_id <= 8) {
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for (i = 0; i < 13; i++) {
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nib = bits2val(dat_bits+4*i, 4);
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dat_str[fr_id][i] = nib2chr(nib);
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}
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dat_str[fr_id][13] = '\0';
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pck[fr_id].ts = gpx._frmcnt; // time_stamp,frame_count,...
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if (option_ecc) {
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pck[fr_id].ec = ec; // option_ecc laesst -1 garnicht durch
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if (ec > 0) {
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ui8_t ecn = 0;
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for (i = 0; i < 15; i++) {
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if ( (ec>>i)&1 ) ecn++;
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}
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pck[fr_id].ec = ecn;
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if ((option_dist || option_json) && ecn > 4) pck[fr_id].ec = -2; // threshold: #errors > 4
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}
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}
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}
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if (fr_id == 0) {
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start = 1;
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start = 0x1000;
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frnr = bits2val(dat_bits+24, 8);
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gpx.frnr = frnr;
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}
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@ -230,10 +257,10 @@ int dat_out(ui8_t *dat_bits) {
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if (fr_id == 5) {
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}
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if (fr_id == 6) {
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if (fr_id == 6) { // sat data
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}
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if (fr_id == 7) {
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if (fr_id == 7) { // sat data
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}
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if (fr_id == 8) {
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@ -333,7 +360,7 @@ float get_Temp2(float *meas) { // meas[0..4]
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R = (f-f1)/g; // meas[0,3,4] > 0 ?
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if (R > 0) T = 1/(1/T0 + 1/B0 * log(R/R0));
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if (option_ptu && ptu_out && option_verbose == 2) {
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if (option_ptu && ptu_out && option_verbose == 3) {
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printf(" (Rso: %.1f , Rb: %.1f)", Rs_o/1e3, Rb/1e3);
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}
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@ -380,9 +407,8 @@ float get_Temp4(float *meas) { // meas[0..4]
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}
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#define RSNbit 0x0100 // radiosonde DFM-06,DFM-09
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#define PSNbit 0x0200 // pilotsonde PS-15
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int conf_out(ui8_t *conf_bits) {
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#define SNbit 0x0100
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int conf_out(ui8_t *conf_bits, int ec) {
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int conf_id;
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int ret = 0;
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int val, hl;
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@ -400,18 +426,20 @@ int conf_out(ui8_t *conf_bits) {
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//
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// SN/ID immer im letzten Kanal?
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if ((gpx.sonde_typ & 0xF) < 7 && conf_id == 6) {
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SN6 = bits2val(conf_bits+4, 4*6); // DFM-06: Kanal 6
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if ( SN6 == gpx.SN6 && SN6 != 0) { // nur Nibble-Werte 0..9
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gpx.sonde_typ = RSNbit | 6;
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SN6 = bits2val(conf_bits+4, 4*6); // DFM-06: Kanal 6
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if (SN6 == gpx.SN6 && SN6 != 0) { // nur Nibble-Werte 0..9
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gpx.sonde_typ = SNbit | 6;
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ptu_out = 6;
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ret = 6;
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sprintf(gpx.sonde_id, "ID06:%6X", gpx.SN6);
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sprintf(json_sonde_id, "DFM06-%6X", gpx.SN6);
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}
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else {
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gpx.sonde_typ = 0;
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}
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gpx.SN6 = SN6;
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}
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if (conf_id == 0xA) { // 0xACxxxxy
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if (conf_id == 0xA) { // 0xACxxxxy , DFM-09
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val = bits2val(conf_bits+8, 4*5);
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hl = (val & 1); // val&0xF 0,1?
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chA[hl] = (val >> 4) & 0xFFFF;
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@ -419,10 +447,12 @@ int conf_out(ui8_t *conf_bits) {
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if (chAbit == 3) { // DFM-09: Kanal A
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SN = (chA[0] << 16) | chA[1];
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if ( SN == SN_A ) {
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gpx.sonde_typ = RSNbit | 0xA;
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gpx.sonde_typ = SNbit | 0xA;
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gpx.SN = SN;
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ptu_out = 9;
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ret = 9;
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sprintf(gpx.sonde_id, "ID09:%6u", gpx.SN);
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sprintf(json_sonde_id, "DFM09-%6u", gpx.SN);
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}
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else {
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gpx.sonde_typ = 0;
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@ -431,7 +461,7 @@ int conf_out(ui8_t *conf_bits) {
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chAbit = 0;
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}
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}
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if (conf_id == 0xC) { // 0xCCxxxxy
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if (conf_id == 0xC) { // 0xCCxxxxy , DFM-17?
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val = bits2val(conf_bits+8, 4*5);
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hl = (val & 1);
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chC[hl] = (val >> 4) & 0xFFFF;
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@ -439,10 +469,12 @@ int conf_out(ui8_t *conf_bits) {
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if (chCbit == 3) { // DFM-17? Kanal C
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SN = (chC[0] << 16) | chC[1];
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if ( SN == SN_C ) {
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gpx.sonde_typ = RSNbit | 0xC;
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gpx.sonde_typ = SNbit | 0xC;
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gpx.SN = SN;
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ptu_out = 9;
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ret = 17;
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sprintf(gpx.sonde_id, "ID-%1X:%6u", gpx.sonde_typ & 0xF, gpx.SN);
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sprintf(json_sonde_id, "DFM17-%6u", gpx.SN);
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}
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else {
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gpx.sonde_typ = 0;
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@ -451,7 +483,7 @@ int conf_out(ui8_t *conf_bits) {
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chCbit = 0;
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}
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}
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if (conf_id == 0xD) { // 0xDCxxxxy
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if (conf_id == 0xD) { // 0xDCxxxxy , DFM-17?
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val = bits2val(conf_bits+8, 4*5);
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hl = (val & 1);
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chD[hl] = (val >> 4) & 0xFFFF;
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@ -459,10 +491,12 @@ int conf_out(ui8_t *conf_bits) {
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if (chDbit == 3) { // DFM-17? Kanal D
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SN = (chD[0] << 16) | chD[1];
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if ( SN == SN_D ) {
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gpx.sonde_typ = RSNbit | 0xD;
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gpx.sonde_typ = SNbit | 0xD;
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gpx.SN = SN;
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ptu_out = 9;
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ret = 18;
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sprintf(gpx.sonde_id, "ID-%1X:%6u", gpx.sonde_typ & 0xF, gpx.SN);
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sprintf(json_sonde_id, "DFM17-%6u", gpx.SN);
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}
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else {
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gpx.sonde_typ = 0;
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@ -471,7 +505,7 @@ int conf_out(ui8_t *conf_bits) {
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chDbit = 0;
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}
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}
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if (conf_id == 0x7) { // 0x70xxxxy
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if (conf_id == 0x7) { // 0x70xxxxy , pilotsonde PS-15?
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val = bits2val(conf_bits+8, 4*5);
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hl = (val & 1);
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ch7[hl] = (val >> 4) & 0xFFFF;
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@ -479,10 +513,12 @@ int conf_out(ui8_t *conf_bits) {
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if (ch7bit == 3) { // PS-15: Kanal 7
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SN = (ch7[0] << 16) | ch7[1];
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if ( SN == SN_7 ) {
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gpx.sonde_typ = PSNbit | 0x7;
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gpx.sonde_typ = SNbit | 0x7;
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gpx.SN = SN;
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ptu_out = 0;
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ret = 15;
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sprintf(gpx.sonde_id, "ID15:%6u", gpx.SN);
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sprintf(json_sonde_id, "DFM15-%6u", gpx.SN);
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}
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else {
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gpx.sonde_typ = 0;
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@ -492,6 +528,7 @@ int conf_out(ui8_t *conf_bits) {
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}
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}
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if (conf_id >= 0 && conf_id <= 4) {
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val = bits2val(conf_bits+4, 4*6);
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gpx.meas24[conf_id] = fl24(val);
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@ -519,95 +556,110 @@ int conf_out(ui8_t *conf_bits) {
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}
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void print_gpx() {
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int i, j;
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int i, j;
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int contgps = 0;
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int output = 0;
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int jsonout = 0;
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if (start) {
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output |= start;
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if (option_raw == 2) {
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for (i = 0; i < 9; i++) {
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printf(" %s", dat_str[i]);
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}
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for (i = 0; i < 9; i++) {
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for (j = 0; j < 13; j++) dat_str[i][j] = ' ';
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}
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}
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else {
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//if (option_auto && option_verbose) printf("[%c] ", option_inv?'-':'+');
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printf("[%3d] ", gpx.frnr);
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printf("%4d-%02d-%02d ", gpx.jahr, gpx.monat, gpx.tag);
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printf("%02d:%02d:%04.1f ", gpx.std, gpx.min, gpx.sek);
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printf(" ");
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printf("lat: %.6f ", gpx.lat);
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printf("lon: %.6f ", gpx.lon);
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printf("alt: %.1f ", gpx.alt);
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printf(" vH: %5.2f ", gpx.horiV);
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printf(" D: %5.1f ", gpx.dir);
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printf(" vV: %5.2f ", gpx.vertV);
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if (option_ptu && ptu_out) {
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float t = get_Temp(gpx.meas24);
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if (t > -270.0) printf(" T=%.1fC ", t);
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if (option_verbose == 2) {
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float t2 = get_Temp2(gpx.meas24);
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float t4 = get_Temp4(gpx.meas24);
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if (t2 > -270.0) printf(" T2=%.1fC ", t2);
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if (t4 > -270.0) printf(" T4=%.1fC ", t4);
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printf(" f0: %.2f ", gpx.meas24[0]);
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printf(" f3: %.2f ", gpx.meas24[3]);
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printf(" f4: %.2f ", gpx.meas24[4]);
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}
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}
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if (option_verbose == 2 && (gpx.sonde_typ & 0xF) == 0xA) {
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printf(" U: %.2fV ", gpx.status[0]);
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printf(" Ti: %.1fK ", gpx.status[1]);
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}
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if ( option_verbose )
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{
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if (gpx.sonde_typ & RSNbit)
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{
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if ((gpx.sonde_typ & 0xF) == 6) { // DFM-06
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printf(" (ID6:%06X) ", gpx.SN6);
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sprintf(sonde_id, "DFM06-%06X", gpx.SN6);
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}
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if ((gpx.sonde_typ & 0xF) == 0xA) { // DFM-09
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printf(" (ID9:%06u) ", gpx.SN);
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sprintf(sonde_id, "DFM09-%06u", gpx.SN);
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}
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if ((gpx.sonde_typ & 0xF) == 0xC || // DFM-17?
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(gpx.sonde_typ & 0xF) == 0xD ) {
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printf(" (ID-%1X:%06u) ", gpx.sonde_typ & 0xF, gpx.SN);
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sprintf(sonde_id, "DFM17-%06u", gpx.SN);
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}
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gpx.sonde_typ ^= RSNbit;
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}
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if (gpx.sonde_typ & PSNbit) {
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if ((gpx.sonde_typ & 0xF) == 0x7) { // PS-15?
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printf(" (ID15:%06u) ", gpx.SN);
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sprintf(sonde_id, "DFM15-%06u", gpx.SN);
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}
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gpx.sonde_typ ^= PSNbit;
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}
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}
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}
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printf("\n");
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for (i = 0; i < 9/*8*/; i++) { // trigger: pck8
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if ( !( (option_dist || option_json) && pck[i].ec < 0) )
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{
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if (pck[8].ts - pck[i].ts < 6.0) { output |= (1<<i); }
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}
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//if (option_dist && pck[i].ec < 0) { output &= ~(1<<i); }
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if (option_json)
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{
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// Print JSON blob
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// Get temperature
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float t = get_Temp(gpx.meas24);
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printf("\n{ \"frame\": %d, \"id\": \"%s\", \"datetime\": \"%04d-%02d-%02dT%02d:%02d:%06.3fZ\", \"lat\": %.5f, \"lon\": %.5f, \"alt\": %.5f, \"vel_h\": %.5f, \"heading\": %.5f, \"vel_v\": %.5f, \"temp\":%.1f }\n", gpx.frnr, sonde_id, gpx.jahr, gpx.monat, gpx.tag, gpx.std, gpx.min, gpx.sek, gpx.lat, gpx.lon, gpx.alt, gpx.horiV, gpx.dir, gpx.vertV, t );
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}
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}
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}
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jsonout = output;
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contgps = ((output & 0x11F) == 0x11F); // 0,1,2,3,8
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if (option_dist && !contgps) {
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output = 0;
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}
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if (option_json && !contgps) {
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jsonout = 0;
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}
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if (output & 0xF000) {
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if (option_raw == 2) {
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for (i = 0; i < 9; i++) {
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printf(" %s", dat_str[i]);
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if (option_ecc) printf(" [%1X] ", pck[i].ec&0xF);
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}
|
||||
for (i = 0; i < 9; i++) {
|
||||
for (j = 0; j < 13; j++) dat_str[i][j] = ' ';
|
||||
}
|
||||
}
|
||||
else {
|
||||
if (option_auto && option_verbose >= 2) printf("[%c] ", option_inv?'-':'+');
|
||||
printf("[%3d] ", gpx.frnr);
|
||||
printf("%4d-%02d-%02d ", gpx.jahr, gpx.monat, gpx.tag);
|
||||
printf("%02d:%02d:%04.1f ", gpx.std, gpx.min, gpx.sek);
|
||||
if (option_verbose >= 2 && option_ecc) printf("[%1X,%1X,%1X] ", pck[0].ec&0xF, pck[8].ec&0xF, pck[1].ec&0xF);
|
||||
printf(" ");
|
||||
printf(" lat: %.5f ", gpx.lat); if (option_verbose >= 2 && option_ecc) printf("[%1X] ", pck[2].ec&0xF);
|
||||
printf(" lon: %.5f ", gpx.lon); if (option_verbose >= 2 && option_ecc) printf("[%1X] ", pck[3].ec&0xF);
|
||||
printf(" alt: %.1f ", gpx.alt); if (option_verbose >= 2 && option_ecc) printf("[%1X] ", pck[4].ec&0xF);
|
||||
printf(" vH: %5.2f ", gpx.horiV);
|
||||
printf(" D: %5.1f ", gpx.dir);
|
||||
printf(" vV: %5.2f ", gpx.vertV);
|
||||
if (option_ptu && ptu_out) {
|
||||
float t = get_Temp(gpx.meas24);
|
||||
if (t > -270.0) printf(" T=%.1fC ", t);
|
||||
if (option_verbose == 3) {
|
||||
float t2 = get_Temp2(gpx.meas24);
|
||||
float t4 = get_Temp4(gpx.meas24);
|
||||
if (t2 > -270.0) printf(" T2=%.1fC ", t2);
|
||||
if (t4 > -270.0) printf(" T4=%.1fC ", t4);
|
||||
printf(" f0: %.2f ", gpx.meas24[0]);
|
||||
printf(" f3: %.2f ", gpx.meas24[3]);
|
||||
printf(" f4: %.2f ", gpx.meas24[4]);
|
||||
}
|
||||
}
|
||||
if (option_verbose == 3 && (gpx.sonde_typ & 0xF) == 0xA) {
|
||||
printf(" U: %.2fV ", gpx.status[0]);
|
||||
printf(" Ti: %.1fK ", gpx.status[1]);
|
||||
}
|
||||
if (option_verbose)
|
||||
{
|
||||
if (gpx.sonde_typ & SNbit) {
|
||||
printf(" (%s) ", gpx.sonde_id);
|
||||
gpx.sonde_typ ^= SNbit;
|
||||
}
|
||||
}
|
||||
}
|
||||
printf("\n");
|
||||
|
||||
if (option_json && jsonout)
|
||||
{
|
||||
// Print JSON blob // valid sonde_ID?
|
||||
printf("{ \"frame\": %d, \"id\": \"%s\", \"datetime\": \"%04d-%02d-%02dT%02d:%02d:%06.3fZ\", \"lat\": %.5f, \"lon\": %.5f, \"alt\": %.5f, \"vel_h\": %.5f, \"heading\": %.5f, \"vel_v\": %.5f",
|
||||
gpx.frnr, json_sonde_id, gpx.jahr, gpx.monat, gpx.tag, gpx.std, gpx.min, gpx.sek, gpx.lat, gpx.lon, gpx.alt, gpx.horiV, gpx.dir, gpx.vertV);
|
||||
if (ptu_out) { // get temperature
|
||||
float t = get_Temp(gpx.meas24); // ecc-valid temperature?
|
||||
if (t > -270.0) printf(", \"temp\": %.1f", t);
|
||||
}
|
||||
printf(" }\n");
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
for (i = 0; i < 9; i++) pck[i].ec = -1;
|
||||
}
|
||||
|
||||
int print_frame() {
|
||||
int print_frame(float frmcnt) {
|
||||
int i;
|
||||
int nib = 0;
|
||||
int frid = -1;
|
||||
int ret0, ret1, ret2;
|
||||
int ret = 0;
|
||||
|
||||
gpx._frmcnt = frmcnt;
|
||||
|
||||
deinterleave(frame_bits+CONF, 7, hamming_conf);
|
||||
deinterleave(frame_bits+DAT1, 13, hamming_dat1);
|
||||
|
|
@ -655,24 +707,24 @@ int print_frame() {
|
|||
else if (option_ecc) {
|
||||
|
||||
if (ret0 == 0 || ret0 > 0) {
|
||||
conf_out(block_conf);
|
||||
conf_out(block_conf, ret0);
|
||||
}
|
||||
if (ret1 == 0 || ret1 > 0) {
|
||||
frid = dat_out(block_dat1);
|
||||
frid = dat_out(block_dat1, ret1);
|
||||
if (frid == 8) print_gpx();
|
||||
}
|
||||
if (ret2 == 0 || ret2 > 0) {
|
||||
frid = dat_out(block_dat2);
|
||||
frid = dat_out(block_dat2, ret2);
|
||||
if (frid == 8) print_gpx();
|
||||
}
|
||||
|
||||
}
|
||||
else {
|
||||
|
||||
conf_out(block_conf);
|
||||
frid = dat_out(block_dat1);
|
||||
conf_out(block_conf, ret0);
|
||||
frid = dat_out(block_dat1, ret1);
|
||||
if (frid == 8) print_gpx();
|
||||
frid = dat_out(block_dat2);
|
||||
frid = dat_out(block_dat2, ret2);
|
||||
if (frid == 8) print_gpx();
|
||||
|
||||
}
|
||||
|
|
@ -699,12 +751,14 @@ int main(int argc, char **argv) {
|
|||
int headerlen = 0;
|
||||
int frm = 0, nfrms = 8; // nfrms=1,2,4,8
|
||||
|
||||
int k,K;
|
||||
int k, K;
|
||||
float mv;
|
||||
unsigned int mv_pos, mv0_pos;
|
||||
int mp = 0;
|
||||
|
||||
float thres = 0.6;
|
||||
float frm_cnt = 0.0;
|
||||
|
||||
float thres = 0.65;
|
||||
|
||||
int bitofs = 0;
|
||||
int symlen = 2;
|
||||
|
|
@ -732,7 +786,8 @@ int main(int argc, char **argv) {
|
|||
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, "-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;
|
||||
}
|
||||
|
|
@ -743,8 +798,10 @@ int main(int argc, char **argv) {
|
|||
option_inv = 0x1;
|
||||
}
|
||||
else if ( (strcmp(*argv, "--ecc") == 0) ) { option_ecc = 1; }
|
||||
else if ( (strcmp(*argv, "--json") == 0) ) { option_json = 1; }
|
||||
else if ( (strcmp(*argv, "--ptu") == 0) ) { option_ptu = 1; ptu_out = 1; }
|
||||
else if ( (strcmp(*argv, "--ptu") == 0) ) { option_ptu = 1; ptu_out = 1; }
|
||||
else if ( (strcmp(*argv, "--auto") == 0) ) { option_auto = 1; }
|
||||
else if ( (strcmp(*argv, "--dist") == 0) ) { option_dist = 1; option_ecc = 1; }
|
||||
else if ( (strcmp(*argv, "--json") == 0) ) { option_json = 1; option_ecc = 1; }
|
||||
else if ( (strcmp(*argv, "--ch2") == 0) ) { wav_channel = 1; } // right channel (default: 0=left)
|
||||
else if ( (strcmp(*argv, "--ths") == 0) ) {
|
||||
++argv;
|
||||
|
|
@ -777,6 +834,9 @@ int main(int argc, char **argv) {
|
|||
}
|
||||
|
||||
|
||||
for (k = 0; k < 9; k++) pck[k].ec = -1; // init ecc-status
|
||||
|
||||
|
||||
symlen = 2;
|
||||
headerlen = strlen(rawheader);
|
||||
bitofs = 2; // +1 .. +2
|
||||
|
|
@ -786,16 +846,15 @@ int main(int argc, char **argv) {
|
|||
return -1;
|
||||
};
|
||||
|
||||
|
||||
k = 0;
|
||||
mv = -1; mv_pos = 0;
|
||||
mv = 0; mv_pos = 0;
|
||||
|
||||
while ( f32buf_sample(fp, option_inv, 1) != EOF ) {
|
||||
|
||||
k += 1;
|
||||
if (k >= K-4) {
|
||||
mv0_pos = mv_pos;
|
||||
mp = getCorrDFT(0, K, 0, &mv, &mv_pos);
|
||||
mp = getCorrDFT(option_auto, K, 0, &mv, &mv_pos);
|
||||
k = 0;
|
||||
}
|
||||
else {
|
||||
|
|
@ -803,7 +862,8 @@ int main(int argc, char **argv) {
|
|||
continue;
|
||||
}
|
||||
|
||||
if (mv > thres && mp > 0) {
|
||||
if ( mp > 0 && (mv > thres || mv < -thres)) {
|
||||
|
||||
if (mv_pos > mv0_pos) {
|
||||
|
||||
header_found = 0;
|
||||
|
|
@ -816,7 +876,16 @@ int main(int argc, char **argv) {
|
|||
herr1 = 1;
|
||||
}
|
||||
}
|
||||
if (herrs <= 1) header_found = 1; // herrs <= 1 bitfehler in header
|
||||
if (herrs <= 1) {
|
||||
header_found = 1; // herrs <= 1 bitfehler in header
|
||||
if (mv < 0) header_found = -header_found;
|
||||
}
|
||||
|
||||
if (header_found < 0) {
|
||||
// read_sbit(option_inv) buffer reset?
|
||||
if (option_auto) option_inv ^= 0x1;
|
||||
else header_found = 0;
|
||||
}
|
||||
|
||||
if (header_found) {
|
||||
|
||||
|
|
@ -824,8 +893,11 @@ int main(int argc, char **argv) {
|
|||
pos = headerlen;
|
||||
pos /= 2;
|
||||
|
||||
//if (fabs(mv) > 0.85) nfrms = 8; else nfrms = 4; // test OK/KO/NO count
|
||||
|
||||
frm = 0;
|
||||
while ( frm < nfrms ) { // nfrms=1,2,4,8
|
||||
frm_cnt = mv_pos/(spb*2.0*BITFRAME_LEN) + frm;
|
||||
while ( pos < BITFRAME_LEN ) {
|
||||
header_found = !(frm==nfrms-1 && pos>=BITFRAME_LEN-10);
|
||||
bitQ = read_sbit(fp, symlen, &bit, option_inv, bitofs, bitpos==0, !header_found); // symlen=2, return: zeroX/bit
|
||||
|
|
@ -835,7 +907,7 @@ int main(int argc, char **argv) {
|
|||
bitpos += 1;
|
||||
}
|
||||
frame_bits[pos] = '\0';
|
||||
ret = print_frame();
|
||||
ret = print_frame(frm_cnt);
|
||||
if (pos < BITFRAME_LEN) break;
|
||||
pos = 0;
|
||||
frm += 1;
|
||||
|
|
|
|||
|
|
@ -647,9 +647,8 @@ int get_GPS1() {
|
|||
err = check_CRC(pos_GPS1, pck_GPS1);
|
||||
if (err) gpx.crc |= crc_GPS1;
|
||||
|
||||
//err = 0;
|
||||
err |= get_GPSweek();
|
||||
err |= get_GPStime();
|
||||
err |= get_GPSweek(); // no plausibility-check
|
||||
err |= get_GPStime(); // no plausibility-check
|
||||
|
||||
return err;
|
||||
}
|
||||
|
|
@ -726,7 +725,7 @@ int get_GPSkoord() {
|
|||
gpx.lat = lat;
|
||||
gpx.lon = lon;
|
||||
gpx.alt = alt;
|
||||
if ((alt < -1000) || (alt > 80000)) return -3;
|
||||
if ((alt < -1000) || (alt > 80000)) return -3; // plausibility-check: altitude, if ecef=(0,0,0)
|
||||
|
||||
|
||||
// ECEF-Velocities
|
||||
|
|
@ -765,7 +764,7 @@ int get_GPS3() {
|
|||
err = check_CRC(pos_GPS3, pck_GPS3);
|
||||
if (err) gpx.crc |= crc_GPS3;
|
||||
|
||||
err |= get_GPSkoord();
|
||||
err |= get_GPSkoord(); // plausibility-check: altitude, if ecef=(0,0,0)
|
||||
|
||||
return err;
|
||||
}
|
||||
|
|
@ -1038,64 +1037,62 @@ int print_position(int ec) {
|
|||
//fprintf(stdout, " (%.1f %.1f %.1f) ", gpx.vN, gpx.vE, gpx.vU);
|
||||
fprintf(stdout," vH: %4.1f D: %5.1f° vV: %3.1f ", gpx.vH, gpx.vD, gpx.vU);
|
||||
}
|
||||
|
||||
if (option_json){
|
||||
// Print JSON output required by auto_rx.
|
||||
if (!err1 && !err2 && !err3){
|
||||
if (option_ptu && !err0 && gpx.T > -273.0) {
|
||||
printf("\n{ \"frame\": %d, \"id\": \"%s\", \"datetime\": \"%04d-%02d-%02dT%02d:%02d:%06.3fZ\", \"lat\": %.5f, \"lon\": %.5f, \"alt\": %.5f, \"vel_h\": %.5f, \"heading\": %.5f, \"vel_v\": %.5f, \"temp\":%.1f }\n", gpx.frnr, gpx.id, gpx.jahr, gpx.monat, gpx.tag, gpx.std, gpx.min, gpx.sek, gpx.lat, gpx.lon, gpx.alt, gpx.vH, gpx.vD, gpx.vU, gpx.T );
|
||||
} else {
|
||||
printf("\n{ \"frame\": %d, \"id\": \"%s\", \"datetime\": \"%04d-%02d-%02dT%02d:%02d:%06.3fZ\", \"lat\": %.5f, \"lon\": %.5f, \"alt\": %.5f, \"vel_h\": %.5f, \"heading\": %.5f, \"vel_v\": %.5f }\n", gpx.frnr, gpx.id, gpx.jahr, gpx.monat, gpx.tag, gpx.std, gpx.min, gpx.sek, gpx.lat, gpx.lon, gpx.alt, gpx.vH, gpx.vD, gpx.vU );
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
if (option_ptu && !err0) {
|
||||
if (gpx.T > -273.0) printf(" T=%.1fC ", gpx.T);
|
||||
}
|
||||
|
||||
|
||||
//if (output)
|
||||
{
|
||||
if (option_crc) {
|
||||
fprintf(stdout, " # ");
|
||||
if (option_ecc && ec >= 0 && (gpx.crc & 0x1F) != 0) {
|
||||
int pos, blk, len, crc; // unexpected blocks
|
||||
int flen = NDATA_LEN;
|
||||
if (frametype() < 0) flen += XDATA_LEN;
|
||||
pos = pos_FRAME;
|
||||
while (pos < flen-1) {
|
||||
blk = frame[pos]; // 0x80XX: encrypted block
|
||||
len = frame[pos+1]; // 0x76XX: 00-padding block
|
||||
crc = check_CRC(pos, blk<<8);
|
||||
fprintf(stdout, " %02X%02X", frame[pos], frame[pos+1]);
|
||||
fprintf(stdout, "[%d]", crc&1);
|
||||
pos = pos+2+len+2;
|
||||
}
|
||||
if (option_crc) { // show CRC-checks (and RS-check)
|
||||
fprintf(stdout, " # ");
|
||||
if (option_ecc && ec >= 0 && (gpx.crc & 0x1F) != 0) {
|
||||
int pos, blk, len, crc; // unexpected blocks
|
||||
int flen = NDATA_LEN;
|
||||
if (frametype() < 0) flen += XDATA_LEN;
|
||||
pos = pos_FRAME;
|
||||
while (pos < flen-1) {
|
||||
blk = frame[pos]; // 0x80XX: encrypted block
|
||||
len = frame[pos+1]; // 0x76XX: 00-padding block
|
||||
crc = check_CRC(pos, blk<<8);
|
||||
fprintf(stdout, " %02X%02X", frame[pos], frame[pos+1]);
|
||||
fprintf(stdout, "[%d]", crc&1);
|
||||
pos = pos+2+len+2;
|
||||
}
|
||||
else {
|
||||
fprintf(stdout, "[");
|
||||
for (i=0; i<5; i++) fprintf(stdout, "%d", (gpx.crc>>i)&1);
|
||||
fprintf(stdout, "]");
|
||||
}
|
||||
if (option_ecc == 2) {
|
||||
if (ec > 0) fprintf(stdout, " (%d)", ec);
|
||||
if (ec < 0) {
|
||||
if (ec == -1) fprintf(stdout, " (-+)");
|
||||
else if (ec == -2) fprintf(stdout, " (+-)");
|
||||
else /*ec == -3*/ fprintf(stdout, " (--)");
|
||||
}
|
||||
}
|
||||
else {
|
||||
fprintf(stdout, "[");
|
||||
for (i=0; i<5; i++) fprintf(stdout, "%d", (gpx.crc>>i)&1);
|
||||
fprintf(stdout, "]");
|
||||
}
|
||||
if (option_ecc == 2) {
|
||||
if (ec > 0) fprintf(stdout, " (%d)", ec);
|
||||
if (ec < 0) {
|
||||
if (ec == -1) fprintf(stdout, " (-+)");
|
||||
else if (ec == -2) fprintf(stdout, " (+-)");
|
||||
else /*ec == -3*/ fprintf(stdout, " (--)");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
get_Calconf(output);
|
||||
|
||||
//if (output)
|
||||
{
|
||||
if (option_verbose > 1) get_Aux();
|
||||
fprintf(stdout, "\n"); // fflush(stdout);
|
||||
if (option_verbose > 1) get_Aux();
|
||||
|
||||
fprintf(stdout, "\n"); // fflush(stdout);
|
||||
|
||||
|
||||
if (option_json) {
|
||||
// Print JSON output required by auto_rx.
|
||||
if (!err && !err1 && !err3) { // frame-nb/id && gps-time && gps-position (crc-)ok; 3 CRCs, RS not needed
|
||||
if (option_ptu && !err0 && gpx.T > -273.0) {
|
||||
printf("{ \"frame\": %d, \"id\": \"%s\", \"datetime\": \"%04d-%02d-%02dT%02d:%02d:%06.3fZ\", \"lat\": %.5f, \"lon\": %.5f, \"alt\": %.5f, \"vel_h\": %.5f, \"heading\": %.5f, \"vel_v\": %.5f, \"temp\":%.1f }\n", gpx.frnr, gpx.id, gpx.jahr, gpx.monat, gpx.tag, gpx.std, gpx.min, gpx.sek, gpx.lat, gpx.lon, gpx.alt, gpx.vH, gpx.vD, gpx.vU, gpx.T );
|
||||
} else {
|
||||
printf("{ \"frame\": %d, \"id\": \"%s\", \"datetime\": \"%04d-%02d-%02dT%02d:%02d:%06.3fZ\", \"lat\": %.5f, \"lon\": %.5f, \"alt\": %.5f, \"vel_h\": %.5f, \"heading\": %.5f, \"vel_v\": %.5f }\n", gpx.frnr, gpx.id, gpx.jahr, gpx.monat, gpx.tag, gpx.std, gpx.min, gpx.sek, gpx.lat, gpx.lon, gpx.alt, gpx.vH, gpx.vD, gpx.vU );
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
err |= err1 | err3;
|
||||
|
|
@ -1227,7 +1224,7 @@ int main(int argc, char *argv[]) {
|
|||
else if (strcmp(*argv, "--std2") == 0) { frmlen = 518; } // NDATA_LEN+XDATA_LEN
|
||||
else if (strcmp(*argv, "--sat") == 0) { option_sat = 1; }
|
||||
else if (strcmp(*argv, "--ptu") == 0) { option_ptu = 1; }
|
||||
else if (strcmp(*argv, "--json") == 0) { option_json = 1; }
|
||||
else if (strcmp(*argv, "--json") == 0) { option_json = 1; option_ecc = 2; option_crc = 1; }
|
||||
else if (strcmp(*argv, "--ch2") == 0) { wav_channel = 1; } // right channel (default: 0=left)
|
||||
else if (strcmp(*argv, "--ths") == 0) {
|
||||
++argv;
|
||||
|
|
|
|||
|
|
@ -104,6 +104,9 @@ static RS_t RS256 = { 255, 12, 24, 231, 0, 1, 1, {0}};
|
|||
static RS_t RS256ccsds = { 255, 16, 32, 223, 112, 11, 116, {0}};
|
||||
static RS_t BCH64 = { 63, 2, 12, 51, 1, 1, 1, {0}};
|
||||
|
||||
// static RS_t RS16_0 = { 15, 3, 6, 9, 0, 1, 1, {0}};
|
||||
static RS_t RS16ccsds = { 15, 2, 4, 11, 6, 1, 1, {0}};
|
||||
|
||||
|
||||
static GF_t GF;
|
||||
static RS_t RS;
|
||||
|
|
@ -810,15 +813,40 @@ int rs_init_BCH64() {
|
|||
return check_gen;
|
||||
}
|
||||
|
||||
int rs_init_RS15ccsds() {
|
||||
int i, check_gen;
|
||||
ui8_t Xalp[MAX_DEG+1];
|
||||
|
||||
GF = GF16RS;
|
||||
check_gen = GF_genTab( GF, exp_a, log_a);
|
||||
|
||||
//RS = RS16_0; // N=15, t=3, b=0, p=1
|
||||
RS = RS16ccsds; // N=15, t=2, b=6, p=1
|
||||
for (i = 0; i <= MAX_DEG; i++) RS.g[i] = 0;
|
||||
for (i = 0; i <= MAX_DEG; i++) Xalp[i] = 0;
|
||||
|
||||
// g(X)=(X-alpha^b)...(X-alpha^(b+2t-1))
|
||||
RS.g[0] = 0x01;
|
||||
Xalp[1] = 0x01; // X
|
||||
for (i = 0; i < 2*RS.t; i++) {
|
||||
Xalp[0] = exp_a[(RS.b+i) % (GF.ord-1)]; // Xalp[0..1]: X - alpha^(b+i)
|
||||
poly_mul(RS.g, Xalp, RS.g);
|
||||
}
|
||||
|
||||
return check_gen;
|
||||
}
|
||||
|
||||
int rs_encode(ui8_t cw[]) {
|
||||
int j;
|
||||
ui8_t parity[MAX_DEG+1],
|
||||
ui8_t __cw[MAX_DEG+1],
|
||||
parity[MAX_DEG+1],
|
||||
d[MAX_DEG+1];
|
||||
for (j = 0; j < RS.R; j++) cw[j] = 0;
|
||||
for (j = 0; j <= MAX_DEG; j++) parity[j] = 0;
|
||||
poly_divmod(cw, RS.g, d, parity);
|
||||
for (j = 0; j <= MAX_DEG; j++) __cw[j] = 0;
|
||||
for (j = RS.R; j < RS.N; j++) __cw[j] = cw[j];
|
||||
poly_divmod(__cw, RS.g, d, parity);
|
||||
//if (poly_deg(parity) >= RS.R) return -1;
|
||||
for (j = 0; j <= poly_deg(parity); j++) cw[j] = parity[j];
|
||||
for (j = 0; j < RS.R; j++) cw[j] = parity[j];
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,288 @@
|
|||
|
||||
/*
|
||||
GF(2^4) - RS(15,11)
|
||||
(no bit-packing, i.e. 1 nibble <-> 1 byte)
|
||||
|
||||
a)
|
||||
ka9q-fec:
|
||||
gcc -c init_rs_char.c
|
||||
gcc -c encode_rs_char.c
|
||||
gcc -c decode_rs_char.c
|
||||
|
||||
gcc -DKA9Q ecc-rs_gf16.c init_rs_char.o encode_rs_char.o decode_rs_char.o -o ecc-rs15ccsds
|
||||
|
||||
b)
|
||||
gcc ecc-rs_gf16.c -o ecc-rs15ccsds
|
||||
|
||||
*/
|
||||
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
#ifdef KA9Q
|
||||
#include "fec.h"
|
||||
#endif
|
||||
|
||||
|
||||
typedef unsigned char ui8_t;
|
||||
typedef unsigned int ui32_t;
|
||||
|
||||
#include "bch_ecc.c"
|
||||
|
||||
|
||||
#define BFSIZE 512
|
||||
#define rs_N 15
|
||||
#define rs_R 4
|
||||
#define rs_K (rs_N-rs_R)
|
||||
|
||||
ui8_t data[BFSIZE];
|
||||
|
||||
ui8_t cw[rs_N+1]; // cw[MAX_DEG+1]; // fixed in encode() ...
|
||||
ui8_t par[rs_N], msg[rs_N];
|
||||
int errs;
|
||||
ui8_t err_pos[rs_R], err_val[rs_R];
|
||||
|
||||
#ifdef KA9Q
|
||||
void *rs;
|
||||
ui8_t codeword[rs_N];
|
||||
int errors, errpos[rs_R];
|
||||
#endif
|
||||
|
||||
|
||||
int main(int argc, char *argv[]) {
|
||||
int i, l;
|
||||
|
||||
int len1, len2;
|
||||
char *str1 = NULL,
|
||||
*str2 = NULL;
|
||||
|
||||
|
||||
rs_init_RS15ccsds(); // 0x13: X^4 + X + 1, t=2, b=6
|
||||
|
||||
#ifdef KA9Q
|
||||
//rs = init_rs_char( 4, 0x13, 0, 1, 6, 0); // RS16_0
|
||||
rs = init_rs_char( 4, 0x13, 6, 1, 4, 0); // RS16ccsds
|
||||
#endif
|
||||
|
||||
if (argv[0] == NULL) return -1;
|
||||
|
||||
for (i = 0; i < BFSIZE; i++) data[i] = 0;
|
||||
for (i = 0; i < rs_N; i++) cw[i] = 0;
|
||||
#ifdef KA9Q
|
||||
for (i = 0; i < rs_N; i++) codeword[i] = 0;
|
||||
#endif
|
||||
|
||||
|
||||
str1 = argv[1];
|
||||
|
||||
len1 = strlen(str1);
|
||||
if (len1 > BFSIZE) return -1;
|
||||
|
||||
for (i = 0; i < len1; i++) {
|
||||
l = sscanf(str1+i, "%1hhx", data+i); if (l < 1) {/*len1 = i;*/}
|
||||
}
|
||||
// 1byte/nibble
|
||||
|
||||
|
||||
for (i = 0; i < rs_K; i++) cw[rs_R+i] = data[i]; // codeword[rs_N-1-i] = cw[i];
|
||||
|
||||
for (i = 0; i < rs_N; i++) msg[i] = 0;
|
||||
for (i = 0; i < rs_N; i++) par[i] = 0;
|
||||
for (i = 0; i < rs_K; i++) msg[i] = data[rs_K-1-i];
|
||||
|
||||
|
||||
//
|
||||
// GF(16) %02X -> %1X (1 nibble / 1 byte)
|
||||
// printf("%1X", cw[i]); // dbg: printf("%02X", cw[i]);
|
||||
// printf("%1X", cw[i]&0xF); // dbg: printf("%02X", cw[i]);
|
||||
//
|
||||
|
||||
|
||||
printf("\n");
|
||||
|
||||
if (argv[2]) {
|
||||
|
||||
str2 = argv[2];
|
||||
len2 = strlen(str2);
|
||||
if (len2 > rs_R) len2 = rs_R;
|
||||
|
||||
for (i = 0; i < len2; i++) {
|
||||
l = sscanf(str2+i, "%1hhx", par+i); if (l < 1) {/*len2 = i;*/}
|
||||
}
|
||||
while (i < rs_R) par[i++] = 0;
|
||||
|
||||
for (i = 0; i < rs_N; i++) cw[i] = 0;
|
||||
for (i = 0; i < rs_R; i++) cw[i] = par[i];
|
||||
for (i = 0; i < len1; i++) cw[rs_R+i] = msg[rs_K-1-i];
|
||||
|
||||
|
||||
#ifdef KA9Q
|
||||
for (i = 0; i < rs_N; i++) codeword[rs_N-1-i] = cw[i];
|
||||
#endif
|
||||
|
||||
printf("(received)\n");
|
||||
printf("msg: ");
|
||||
for (i = rs_R; i < rs_N; i++) printf("%1X", cw[i]); // dbg: printf("%02X", cw[i]);
|
||||
printf("\n");
|
||||
printf("par: ");
|
||||
for (i = 0; i < rs_R; i++) printf("%1X", cw[i]);
|
||||
printf("\n");
|
||||
printf("msg+par:\n");
|
||||
for (i = 0; i < rs_N; i++) printf("%1X", cw[i]);
|
||||
printf("\n");
|
||||
|
||||
printf("\n");
|
||||
|
||||
|
||||
printf("cw\n");
|
||||
errs = rs_decode(cw, err_pos, err_val);
|
||||
printf("errs: %d\n", errs);
|
||||
if (errs > 0) {
|
||||
printf("pos: ");
|
||||
for (i = 0; i < errs; i++) printf(" %d", err_pos[i]);
|
||||
printf("\n");
|
||||
}
|
||||
for (i = 0; i < rs_N; i++) printf("%1X", cw[i]); printf("\n");
|
||||
|
||||
|
||||
#ifdef KA9Q
|
||||
printf("\n");
|
||||
|
||||
printf("codeword\n");
|
||||
errors = decode_rs_char(rs, codeword, errpos, 0);
|
||||
printf("errors: %d\n", errors);
|
||||
if (errors > 0) {
|
||||
printf("pos: ");
|
||||
for (i = 0; i < errors; i++) printf(" %d", errpos[i]);
|
||||
printf("\n");
|
||||
}
|
||||
for (i = 0; i < rs_N; i++) printf("%1x", codeword[i]); printf("\n");
|
||||
#endif
|
||||
|
||||
} else {
|
||||
|
||||
printf("msg: ");
|
||||
for (i = rs_R; i < rs_N; i++) printf("%1X", cw[i]); // dbg: printf("%02X", cw[i]);
|
||||
printf("\n");
|
||||
printf("\n");
|
||||
|
||||
|
||||
printf("cw\n");
|
||||
rs_encode(cw);
|
||||
printf("par: ");
|
||||
for (i = 0; i < rs_R; i++) printf("%1X", cw[i]); printf("\n");
|
||||
printf("cw-enc:\n");
|
||||
for (i = 0; i < rs_N; i++) {
|
||||
//if (i == rs_R) printf(" ");
|
||||
printf("%1X", cw[i]);
|
||||
}
|
||||
printf("\n");
|
||||
|
||||
// check
|
||||
errs = rs_decode(cw, err_pos, err_val);
|
||||
if (errs) {
|
||||
printf("errs: %d\n", errs);
|
||||
printf("cw-dec:\n");
|
||||
for (i = 0; i < rs_N; i++) {
|
||||
//if (i == rs_R) printf(" ");
|
||||
printf("%1X", cw[i]);
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
|
||||
#ifdef KA9Q
|
||||
printf("\n");
|
||||
|
||||
printf("codeword\n");
|
||||
printf("message: ");
|
||||
for (i = 0; i < rs_K; i++) printf("%1x", msg[i]); printf("\n");
|
||||
encode_rs_char(rs, msg, par);
|
||||
printf("parity : ");
|
||||
for (i = 0; i < rs_R; i++) printf("%1x", par[i]); printf("\n");
|
||||
|
||||
for (i = 0; i < rs_K; i++) codeword[i] = msg[i];
|
||||
for (i = 0; i < rs_R; i++) codeword[rs_K+i] = par[i];
|
||||
printf("codeword:\n");
|
||||
for (i = 0; i < rs_N; i++) printf("%1x", codeword[i]); printf("\n");
|
||||
#endif
|
||||
|
||||
}
|
||||
|
||||
|
||||
printf("\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
|
||||
RS(15,11):
|
||||
codeword length 15
|
||||
message length 11
|
||||
parity length 4
|
||||
|
||||
./ecc-rs15 msg [par]
|
||||
msg: 11 nibbles
|
||||
par: 4 nibbles
|
||||
|
||||
ecc-rs15 input/output: nibbles
|
||||
cw[]: 1 byte / 1 nibble
|
||||
|
||||
|
||||
examples:
|
||||
|
||||
$ ./ecc-rs15ccsds 00000000001
|
||||
|
||||
msg: 00000000001
|
||||
|
||||
cw
|
||||
par: 8281
|
||||
cw-enc:
|
||||
828100000000001
|
||||
|
||||
codeword
|
||||
message: 10000000000
|
||||
parity : 1828
|
||||
codeword:
|
||||
100000000001828
|
||||
|
||||
$ ./ecc-rs15ccsds 00000000001 8281
|
||||
|
||||
(received)
|
||||
msg: 00000000001
|
||||
par: 8281
|
||||
msg+par:
|
||||
828100000000001
|
||||
|
||||
cw
|
||||
errs: 0
|
||||
828100000000001
|
||||
|
||||
codeword
|
||||
errors: 0
|
||||
100000000001828
|
||||
|
||||
$ ./ecc-rs15ccsds 00000000001 8283
|
||||
|
||||
(received)
|
||||
msg: 00000000001
|
||||
par: 8283
|
||||
msg+par:
|
||||
828300000000001
|
||||
|
||||
cw
|
||||
errs: 1
|
||||
pos: 3
|
||||
828100000000001
|
||||
|
||||
codeword
|
||||
errors: 1
|
||||
pos: 11
|
||||
100000000001828
|
||||
|
||||
*/
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,881 @@
|
|||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <math.h>
|
||||
#include <complex.h>
|
||||
|
||||
|
||||
typedef unsigned char ui8_t;
|
||||
typedef unsigned short ui16_t;
|
||||
typedef unsigned int ui32_t;
|
||||
typedef short i16_t;
|
||||
typedef int i32_t;
|
||||
|
||||
|
||||
static int option_verbose = 0, // ausfuehrliche Anzeige
|
||||
option_inv = 0, // invertiert Signal
|
||||
option_dc = 0,
|
||||
option_silent = 0,
|
||||
wavloaded = 0;
|
||||
static int wav_channel = 0; // audio channel: left
|
||||
|
||||
|
||||
//int dfm_bps = 2500;
|
||||
static char dfm_header[] = "01100101011001101010010110101010";
|
||||
|
||||
//int vai_bps = 4800;
|
||||
static char rs41_header[] = "00001000011011010101001110001000"
|
||||
"01000100011010010100100000011111";
|
||||
static char rs92_header[] = //"10100110011001101001"
|
||||
//"10100110011001101001"
|
||||
"10100110011001101001"
|
||||
"10100110011001101001"
|
||||
"1010011001100110100110101010100110101001";
|
||||
|
||||
//int lms_bps = 4800;
|
||||
static char lms6_header[] = "0101011000001000""0001110010010111"
|
||||
"0001101010100111""0011110100111110";
|
||||
|
||||
//int m10_bps = 9600;
|
||||
static char m10_header[] = "10011001100110010100110010011001";
|
||||
// frame byte[0..1]: byte[0]=framelen-1, byte[1]=type(8F=M2K2,9F=M10,AF=M10+)
|
||||
// M2K2 : 64 8F : 0110010010001111
|
||||
// M10 : 64 9F : 0110010010011111 (framelen 0x64+1)
|
||||
// M10-aux: 76 9F : 0111011010011111 (framelen 0x76+1)
|
||||
// M10+ : 64 AF : 0110010010101111 (w/ gtop-GPS)
|
||||
|
||||
// imet_9600 / 1200 Hz;
|
||||
static char imet_preamble[] = "11110000111100001111000011110000"
|
||||
"11110000111100001111000011110000"
|
||||
"11110000111100001111000011110000"
|
||||
"11110000111100001111000011110000"; // 1200 Hz preamble
|
||||
|
||||
|
||||
//int imet1ab_bps = 9600; // 1200 bits/sec
|
||||
static char imet1ab_header[] = "11110000111100001111000011110000"
|
||||
// "11110000""10101100110010101100101010101100"
|
||||
"11110000""10101100110010101100101010101100";
|
||||
|
||||
|
||||
// 11110000:1 , 001100110:0 // 11/4=2.1818..
|
||||
static char imet1rs_header[] =
|
||||
"0000""1111""0000""1111""0000""1111" // preamble
|
||||
"0000""1111";
|
||||
|
||||
// imet1rs/imet4 1200Hz preamble , lead_out , 8N1 byte: lead-in 8bits lead-out , ...
|
||||
// 1:1200Hz/0:2200Hz tones, bit-duration 1/1200 sec, phase ...
|
||||
// bits: 1111111111111111111 10 10000000 10 ..;
|
||||
|
||||
|
||||
// C34/C50: 2400 baud, 1:2900Hz/0:4800Hz
|
||||
static char c34_preheader[] =
|
||||
"01010101010101010101010101010101"; // 2900 Hz tone
|
||||
// dft, dB-max(1000Hz..5000Hz) = 2900Hz ?
|
||||
|
||||
typedef struct {
|
||||
int bps; // header: here bps means baudrate ...
|
||||
int hLen;
|
||||
int N;
|
||||
char *header;
|
||||
float BT;
|
||||
float spb;
|
||||
float thres;
|
||||
float complex *Fm;
|
||||
char *type;
|
||||
unsigned char tn;
|
||||
} rsheader_t;
|
||||
|
||||
#define Nrs 9
|
||||
#define idxAB 7
|
||||
#define idxRS 8
|
||||
static rsheader_t rs_hdr[Nrs] = {
|
||||
{ 2500, 0, 0, dfm_header, 1.0, 0.0, 0.65, NULL, "DFM", 2},
|
||||
{ 4800, 0, 0, rs41_header, 0.5, 0.0, 0.70, NULL, "RS41", 3},
|
||||
{ 4800, 0, 0, rs92_header, 0.5, 0.0, 0.70, NULL, "RS92", 4},
|
||||
{ 4800, 0, 0, lms6_header, 1.0, 0.0, 0.70, NULL, "LMS6", 8},
|
||||
{ 9600, 0, 0, m10_header, 1.0, 0.0, 0.76, NULL, "M10", 5},
|
||||
{ 5800, 0, 0, c34_preheader, 1.5, 0.0, 0.80, NULL, "C34C50", 9}, // C34/C50 2900 Hz tone
|
||||
{ 9600, 0, 0, imet_preamble, 0.5, 0.0, 0.80, NULL, "IMET", 6}, // IMET1AB=7, IMET1RS=8
|
||||
{ 9600, 0, 0, imet1ab_header, 1.0, 0.0, 0.80, NULL, "IMET1AB", 6},
|
||||
{ 9600, 0, 0, imet1rs_header, 0.5, 0.0, 0.80, NULL, "IMET1RS", 7} // IMET4
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
// m10-false-positive:
|
||||
// m10-preamble similar to rs41-preamble, parts of rs92/imet1ab; diffs:
|
||||
// - iq: - modulation-index rs41 < rs92 < m10,
|
||||
// - power level / frame < 1s, noise
|
||||
// - fm: - frame duration <-> noise (variance/standard deviation)
|
||||
// - pulse-shaping
|
||||
// m10: 00110011 at 9600 bps
|
||||
// rs41: 0 1 0 1 at 4800 bps
|
||||
// - m10 top-carrier, fm-mean/average
|
||||
// - m10-header ..110(1)0110011()011.. bit shuffle
|
||||
// - m10 frame byte[1]=type(M2K2,M10,M10+)
|
||||
*/
|
||||
|
||||
/*
|
||||
// rs92
|
||||
// imet1ab-false-positive
|
||||
// ...
|
||||
*/
|
||||
|
||||
|
||||
static int sample_rate = 0, bits_sample = 0, channels = 0;
|
||||
static int wav_ch = 0; // 0: links bzw. mono; 1: rechts
|
||||
|
||||
static unsigned int sample_in, sample_out, delay;
|
||||
|
||||
static int M; // N
|
||||
|
||||
static float *bufs = NULL;
|
||||
|
||||
static char *rawbits = NULL;
|
||||
|
||||
static int Nvar = 0; // < M
|
||||
static double xsum = 0;
|
||||
static float *xs = NULL;
|
||||
/*
|
||||
static double xsum=0, qsum=0;
|
||||
static float *xs = NULL,
|
||||
*qs = NULL;
|
||||
*/
|
||||
|
||||
static float dc_ofs = 0.0;
|
||||
static float dc = 0.0;
|
||||
|
||||
/* ------------------------------------------------------------------------------------ */
|
||||
|
||||
|
||||
static int LOG2N, N_DFT;
|
||||
|
||||
static float complex *ew;
|
||||
|
||||
static float complex *X, *Z, *cx;
|
||||
static float *xn;
|
||||
static float *db;
|
||||
|
||||
static void dft_raw(float complex *Z) {
|
||||
int s, l, l2, i, j, k;
|
||||
float complex w1, w2, T;
|
||||
|
||||
j = 1;
|
||||
for (i = 1; i < N_DFT; i++) {
|
||||
if (i < j) {
|
||||
T = Z[j-1];
|
||||
Z[j-1] = Z[i-1];
|
||||
Z[i-1] = T;
|
||||
}
|
||||
k = N_DFT/2;
|
||||
while (k < j) {
|
||||
j = j - k;
|
||||
k = k/2;
|
||||
}
|
||||
j = j + k;
|
||||
}
|
||||
|
||||
for (s = 0; s < LOG2N; s++) {
|
||||
l2 = 1 << s;
|
||||
l = l2 << 1;
|
||||
w1 = (float complex)1.0;
|
||||
w2 = ew[s]; // cexp(-I*M_PI/(float)l2)
|
||||
for (j = 1; j <= l2; j++) {
|
||||
for (i = j; i <= N_DFT; i += l) {
|
||||
k = i + l2;
|
||||
T = Z[k-1] * w1;
|
||||
Z[k-1] = Z[i-1] - T;
|
||||
Z[i-1] = Z[i-1] + T;
|
||||
}
|
||||
w1 = w1 * w2;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void dft(float *x, float complex *Z) {
|
||||
int i;
|
||||
for (i = 0; i < N_DFT; i++) Z[i] = (float complex)x[i];
|
||||
dft_raw(Z);
|
||||
}
|
||||
|
||||
static void Nidft(float complex *Z, float complex *z) {
|
||||
int i;
|
||||
for (i = 0; i < N_DFT; i++) z[i] = conj(Z[i]);
|
||||
dft_raw(z);
|
||||
// idft():
|
||||
// for (i = 0; i < N_DFT; i++) z[i] = conj(z[i])/(float)N_DFT; // hier: z reell
|
||||
}
|
||||
|
||||
static float freq2bin(int f) {
|
||||
return f * N_DFT / (float)sample_rate;
|
||||
}
|
||||
|
||||
static float bin2freq(int k) {
|
||||
return sample_rate * k / (float)N_DFT;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------------------ */
|
||||
/*
|
||||
static float get_bufvar(int ofs) {
|
||||
float mu = xs[(sample_out+M + ofs) % M]/Nvar;
|
||||
float var = qs[(sample_out+M + ofs) % M]/Nvar - mu*mu;
|
||||
return var;
|
||||
}
|
||||
*/
|
||||
static float get_bufmu(int ofs) {
|
||||
float mu = xs[(sample_out+M + ofs) % M]/Nvar;
|
||||
return mu;
|
||||
}
|
||||
|
||||
|
||||
static int getCorrDFT(int abs, int K, unsigned int pos, float *maxv, unsigned int *maxvpos, rsheader_t rshd) {
|
||||
int i;
|
||||
int mp = -1;
|
||||
float mx = 0.0;
|
||||
double xnorm = 1;
|
||||
unsigned int mpos = 0;
|
||||
|
||||
dc = 0.0;
|
||||
|
||||
if (rshd.N + K > N_DFT/2 - 2) return -1;
|
||||
if (sample_in < delay+rshd.N+K) return -2;
|
||||
|
||||
if (pos == 0) pos = sample_out;
|
||||
|
||||
|
||||
for (i = 0; i < rshd.N+K; i++) xn[i] = bufs[(pos+M -(rshd.N+K-1) + i) % M];
|
||||
while (i < N_DFT) xn[i++] = 0.0;
|
||||
|
||||
dft(xn, X);
|
||||
|
||||
dc = get_bufmu(pos-sample_out); //oder: dc = creal(X[0])/N_DFT;
|
||||
|
||||
for (i = 0; i < N_DFT; i++) Z[i] = X[i]*rshd.Fm[i];
|
||||
|
||||
Nidft(Z, cx);
|
||||
|
||||
|
||||
if (abs) {
|
||||
for (i = rshd.N; i < rshd.N+K; i++) {
|
||||
if (fabs(creal(cx[i])) > fabs(mx)) { // imag(cx)=0
|
||||
mx = creal(cx[i]);
|
||||
mp = i;
|
||||
}
|
||||
}
|
||||
}
|
||||
else {
|
||||
for (i = rshd.N; i < rshd.N+K; i++) {
|
||||
if (creal(cx[i]) > mx) { // imag(cx)=0
|
||||
mx = creal(cx[i]);
|
||||
mp = i;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (mp == rshd.N || mp == rshd.N+K-1) return -4; // Randwert
|
||||
|
||||
mpos = pos - ( rshd.N+K-1 - mp );
|
||||
|
||||
//xnorm = sqrt(qs[(mpos + 2*M) % M]);
|
||||
xnorm = 0.0;
|
||||
for (i = 0; i < rshd.N; i++) xnorm += bufs[(mpos-i + M) % M]*bufs[(mpos-i + M) % M];
|
||||
xnorm = sqrt(xnorm);
|
||||
|
||||
mx /= xnorm*N_DFT;
|
||||
|
||||
*maxv = mx;
|
||||
*maxvpos = mpos;
|
||||
|
||||
|
||||
return mp;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------------------ */
|
||||
|
||||
static 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;
|
||||
}
|
||||
|
||||
static int read_wav_header(FILE *fp, int wav_channel) {
|
||||
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 (wav_channel >= 0 && wav_channel < channels) wav_ch = wav_channel;
|
||||
else wav_ch = 0;
|
||||
fprintf(stderr, "channel-In : %d\n", wav_ch+1);
|
||||
|
||||
if ((bits_sample != 8) && (bits_sample != 16)) return -1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int f32read_sample(FILE *fp, float *s) {
|
||||
int i;
|
||||
short b = 0;
|
||||
|
||||
for (i = 0; i < channels; i++) {
|
||||
|
||||
if (fread( &b, bits_sample/8, 1, fp) != 1) return EOF;
|
||||
|
||||
if (i == wav_ch) { // 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 == 8) { b -= 128; }
|
||||
*s = b/128.0;
|
||||
if (bits_sample == 16) { *s /= 256.0; }
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int f32buf_sample(FILE *fp, int inv, int cm) {
|
||||
float s = 0.0;
|
||||
float xneu, xalt;
|
||||
|
||||
|
||||
if (f32read_sample(fp, &s) == EOF) return EOF;
|
||||
|
||||
if (inv) s = -s;
|
||||
bufs[sample_in % M] = s - dc_ofs;
|
||||
|
||||
xneu = bufs[(sample_in ) % M];
|
||||
xalt = bufs[(sample_in+M - Nvar) % M];
|
||||
xsum += xneu - xalt; // + xneu - xalt
|
||||
xs[sample_in % M] = xsum;
|
||||
/*
|
||||
qsum += (xneu - xalt)*(xneu + xalt); // + xneu*xneu - xalt*xalt
|
||||
qs[sample_in % M] = qsum;
|
||||
*/
|
||||
|
||||
if (0 && cm) {
|
||||
// direct correlation
|
||||
}
|
||||
|
||||
|
||||
sample_out = sample_in - delay;
|
||||
|
||||
sample_in += 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int read_bufbit(int symlen, char *bits, unsigned int mvp, int reset, float spb) {
|
||||
// symlen==2: manchester2 0->10,1->01->1: 2.bit
|
||||
|
||||
static unsigned int rcount;
|
||||
static float rbitgrenze;
|
||||
|
||||
double sum = 0.0;
|
||||
|
||||
if (reset) {
|
||||
rcount = 0;
|
||||
rbitgrenze = 0;
|
||||
}
|
||||
|
||||
|
||||
rbitgrenze += spb;
|
||||
do {
|
||||
sum += bufs[(rcount + mvp + M) % M];
|
||||
rcount++;
|
||||
} while (rcount < rbitgrenze); // n < spb
|
||||
|
||||
if (symlen == 2) {
|
||||
rbitgrenze += spb;
|
||||
do {
|
||||
sum -= bufs[(rcount + mvp + M) % M];
|
||||
rcount++;
|
||||
} while (rcount < rbitgrenze); // n < spb
|
||||
}
|
||||
|
||||
|
||||
if (symlen != 2) {
|
||||
if (sum >= 0) *bits = '1';
|
||||
else *bits = '0';
|
||||
}
|
||||
else {
|
||||
if (sum >= 0) strncpy(bits, "10", 2);
|
||||
else strncpy(bits, "01", 2);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int headcmp(int symlen, char *hdr, int len, unsigned int mvp, int inv, int option_dc, float spb) {
|
||||
int errs = 0;
|
||||
int pos;
|
||||
int step = 1;
|
||||
char sign = 0;
|
||||
|
||||
if (symlen != 1) step = 2;
|
||||
if (inv) sign=1;
|
||||
|
||||
for (pos = 0; pos < len; pos += step) {
|
||||
read_bufbit(symlen, rawbits+pos, mvp+1-(int)(len*spb), pos==0, spb);
|
||||
}
|
||||
rawbits[pos] = '\0';
|
||||
|
||||
while (len > 0) {
|
||||
if ((rawbits[len-1]^sign) != hdr[len-1]) errs += 1;
|
||||
len--;
|
||||
}
|
||||
|
||||
if (option_dc && errs < 3) {
|
||||
dc_ofs += dc;
|
||||
}
|
||||
|
||||
return errs;
|
||||
}
|
||||
|
||||
/* -------------------------------------------------------------------------- */
|
||||
|
||||
|
||||
#define SQRT2 1.4142135624 // sqrt(2)
|
||||
// sigma = sqrt(log(2)) / (2*PI*BT):
|
||||
//#define SIGMA 0.2650103635 // BT=0.5: 0.2650103635 , BT=0.3: 0.4416839392
|
||||
|
||||
// Gaussian FM-pulse
|
||||
static double Q(double x) {
|
||||
return 0.5 - 0.5*erf(x/SQRT2);
|
||||
}
|
||||
static double pulse(double t, double sigma) {
|
||||
return Q((t-0.5)/sigma) - Q((t+0.5)/sigma);
|
||||
}
|
||||
|
||||
|
||||
static double norm2_match(float *match, int n) {
|
||||
int i;
|
||||
double x, y = 0.0;
|
||||
for (i = 0; i < n; i++) {
|
||||
x = match[i];
|
||||
y += x*x;
|
||||
}
|
||||
return y;
|
||||
}
|
||||
|
||||
static int init_buffers() {
|
||||
|
||||
int i, j, pos;
|
||||
double t;
|
||||
double b0, b1, b2, b;
|
||||
float normMatch;
|
||||
|
||||
int K, NN;
|
||||
int n, k;
|
||||
float *match = NULL;
|
||||
float *m = NULL;
|
||||
|
||||
double BT = 0.5;
|
||||
double sigma = sqrt(log(2)) / (2*M_PI*BT);
|
||||
|
||||
char *bits = NULL;
|
||||
float spb = 0.0;
|
||||
|
||||
int hLen = 0;
|
||||
|
||||
for (j = 0; j < Nrs; j++) {
|
||||
rs_hdr[j].spb = sample_rate/(float)rs_hdr[j].bps;
|
||||
rs_hdr[j].hLen = strlen(rs_hdr[j].header);
|
||||
rs_hdr[j].N = rs_hdr[j].hLen * rs_hdr[j].spb + 0.5;
|
||||
if (rs_hdr[j].hLen > hLen) hLen = rs_hdr[j].hLen;
|
||||
}
|
||||
|
||||
NN = hLen * sample_rate/2500.0 + 0.5; // max(hLen*spb)
|
||||
|
||||
M = 3*NN;
|
||||
//if (samples_per_bit < 6) M = 6*N;
|
||||
|
||||
delay = NN/16;
|
||||
sample_in = 0;
|
||||
|
||||
K = M-NN - delay; // N+K < M
|
||||
|
||||
LOG2N = 2 + (int)(log(NN+K)/log(2));
|
||||
N_DFT = 1 << LOG2N;
|
||||
|
||||
while (NN + K > N_DFT/2 - 2) {
|
||||
LOG2N += 1;
|
||||
N_DFT <<= 1;
|
||||
}
|
||||
|
||||
Nvar = NN; // wenn Nvar fuer xnorm, dann Nvar=rshd.N
|
||||
|
||||
rawbits = (char *)calloc( hLen+1, sizeof(char)); if (rawbits == NULL) return -100;
|
||||
bufs = (float *)calloc( M+1, sizeof(float)); if (bufs == NULL) return -100;
|
||||
xs = (float *)calloc( M+1, sizeof(float)); if (xs == NULL) return -100;
|
||||
/*
|
||||
qs = (float *)calloc( M+1, sizeof(float)); if (qs == NULL) return -100;
|
||||
*/
|
||||
|
||||
xn = calloc(N_DFT+1, sizeof(float)); if (xn == NULL) return -1;
|
||||
db = calloc(N_DFT+1, sizeof(float)); if (db == NULL) return -1;
|
||||
|
||||
ew = calloc(LOG2N+1, sizeof(complex float)); if (ew == NULL) return -1;
|
||||
X = calloc(N_DFT+1, sizeof(complex float)); if (X == NULL) return -1;
|
||||
Z = calloc(N_DFT+1, sizeof(complex float)); if (Z == NULL) return -1;
|
||||
cx = calloc(N_DFT+1, sizeof(complex float)); if (cx == NULL) return -1;
|
||||
|
||||
for (n = 0; n < LOG2N; n++) {
|
||||
k = 1 << n;
|
||||
ew[n] = cexp(-I*M_PI/(float)k);
|
||||
}
|
||||
|
||||
match = (float *)calloc( NN+1, sizeof(float)); if (match == NULL) return -1;
|
||||
m = (float *)calloc(N_DFT+1, sizeof(float)); if (m == NULL) return -1;
|
||||
|
||||
|
||||
for (j = 0; j < Nrs-1; j++)
|
||||
{
|
||||
rs_hdr[j].Fm = (float complex *)calloc(N_DFT+1, sizeof(complex float)); if (rs_hdr[j].Fm == NULL) return -1;
|
||||
bits = rs_hdr[j].header;
|
||||
spb = rs_hdr[j].spb;
|
||||
sigma = sqrt(log(2)) / (2*M_PI*rs_hdr[j].BT);
|
||||
|
||||
for (i = 0; i < rs_hdr[j].N; i++) {
|
||||
|
||||
pos = i/spb;
|
||||
t = (i - pos*spb)/spb - 0.5;
|
||||
|
||||
b1 = ((bits[pos] & 0x1) - 0.5)*2.0;
|
||||
b = b1*pulse(t, sigma);
|
||||
|
||||
if (pos > 0) {
|
||||
b0 = ((bits[pos-1] & 0x1) - 0.5)*2.0;
|
||||
b += b0*pulse(t+1, sigma);
|
||||
}
|
||||
|
||||
if (pos < hLen) {
|
||||
b2 = ((bits[pos+1] & 0x1) - 0.5)*2.0;
|
||||
b += b2*pulse(t-1, sigma);
|
||||
}
|
||||
|
||||
match[i] = b;
|
||||
}
|
||||
|
||||
normMatch = sqrt(norm2_match(match, rs_hdr[j].N));
|
||||
for (i = 0; i < rs_hdr[j].N; i++) {
|
||||
match[i] /= normMatch;
|
||||
}
|
||||
|
||||
for (i = 0; i < rs_hdr[j].N; i++) m[rs_hdr[j].N-1 - i] = match[i];
|
||||
while (i < N_DFT) m[i++] = 0.0;
|
||||
dft(m, rs_hdr[j].Fm);
|
||||
|
||||
}
|
||||
|
||||
|
||||
free(match); match = NULL;
|
||||
free(m); m = NULL;
|
||||
|
||||
return K;
|
||||
}
|
||||
|
||||
static int free_buffers() {
|
||||
int j;
|
||||
|
||||
if (bufs) { free(bufs); bufs = NULL; }
|
||||
if (xs) { free(xs); xs = NULL; }
|
||||
/*
|
||||
if (qs) { free(qs); qs = NULL; }
|
||||
*/
|
||||
if (rawbits) { free(rawbits); rawbits = NULL; }
|
||||
|
||||
if (xn) { free(xn); xn = NULL; }
|
||||
if (db) { free(xn); xn = NULL; }
|
||||
if (ew) { free(ew); ew = NULL; }
|
||||
if (X) { free(X); X = NULL; }
|
||||
if (Z) { free(Z); Z = NULL; }
|
||||
if (cx) { free(cx); cx = NULL; }
|
||||
|
||||
for (j = 0; j < Nrs-1; j++) {
|
||||
if (rs_hdr[j].Fm) { free(rs_hdr[j].Fm); rs_hdr[j].Fm = NULL; }
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------------------ */
|
||||
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
|
||||
FILE *fp = NULL;
|
||||
char *fpname = NULL;
|
||||
|
||||
int j;
|
||||
int k, K;
|
||||
float mv[Nrs];
|
||||
unsigned int mv_pos[Nrs], mv0_pos[Nrs];
|
||||
int mp[Nrs];
|
||||
|
||||
int header_found = 0;
|
||||
int herrs;
|
||||
float thres = 0.76;
|
||||
|
||||
int j_max;
|
||||
float mv_max;
|
||||
|
||||
#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");
|
||||
return 0;
|
||||
}
|
||||
else if ( (strcmp(*argv, "-v") == 0) || (strcmp(*argv, "--verbose") == 0) ) {
|
||||
option_verbose = 1;
|
||||
}
|
||||
else if ( (strcmp(*argv, "--dc") == 0) ) {
|
||||
option_dc = 1;
|
||||
}
|
||||
else if ( (strcmp(*argv, "-s") == 0) || (strcmp(*argv, "--silent") == 0) ) {
|
||||
option_silent = 1;
|
||||
}
|
||||
else if ( (strcmp(*argv, "--ch2") == 0) ) { wav_channel = 1; } // right channel (default: 0=left)
|
||||
else if ( (strcmp(*argv, "--ths") == 0) ) {
|
||||
++argv;
|
||||
if (*argv) {
|
||||
thres = atof(*argv);
|
||||
for (j = 0; j < Nrs; j++) rs_hdr[j].thres = thres;
|
||||
}
|
||||
else return -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;
|
||||
|
||||
|
||||
j = read_wav_header(fp, wav_channel);
|
||||
if ( j < 0 ) {
|
||||
fclose(fp);
|
||||
fprintf(stderr, "error: wav header\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
K = init_buffers();
|
||||
if ( K < 0 ) {
|
||||
fprintf(stderr, "error: init buffers\n");
|
||||
return -1;
|
||||
};
|
||||
|
||||
for (j = 0; j < Nrs; j++) {
|
||||
mv[j] = 0;
|
||||
mv_pos[j] = 0;
|
||||
mp[j] = 0;
|
||||
}
|
||||
|
||||
k = 0;
|
||||
|
||||
while ( f32buf_sample(fp, option_inv, 1) != EOF ) {
|
||||
|
||||
k += 1;
|
||||
|
||||
if (k >= K-4) {
|
||||
for (j = 0; j < Nrs-2; j++) {
|
||||
mv0_pos[j] = mv_pos[j];
|
||||
mp[j] = getCorrDFT(-1, K, 0, mv+j, mv_pos+j, rs_hdr[j]);
|
||||
}
|
||||
k = 0;
|
||||
}
|
||||
else {
|
||||
//for (j = 0; j < Nrs; j++) mv[j] = 0.0;
|
||||
continue;
|
||||
}
|
||||
|
||||
header_found = 0;
|
||||
for (j = 0; j < Nrs-2; j++)
|
||||
{
|
||||
if (mp[j] > 0 && (mv[j] > rs_hdr[j].thres || mv[j] < -rs_hdr[j].thres)) {
|
||||
if (mv_pos[j] > mv0_pos[j]) {
|
||||
|
||||
herrs = headcmp(1, rs_hdr[j].header, rs_hdr[j].hLen, mv_pos[j], mv[j]<0, option_dc, rs_hdr[j].spb);
|
||||
if (herrs < 2) { // max 1 bitfehler in header
|
||||
|
||||
if ( strncmp(rs_hdr[j].type, "IMET", 4) == 0 )
|
||||
{
|
||||
int n, m;
|
||||
int D = N_DFT/2 - 3;
|
||||
float df;
|
||||
float pow2200, pow2400;
|
||||
int bin2200, bin2400;
|
||||
|
||||
for (n = 0; n < N_DFT; n++) {
|
||||
xn[n] = 0.0;
|
||||
db[n] = 0.0;
|
||||
}
|
||||
|
||||
n = 0;
|
||||
while (n < sample_rate) { // 1 sec
|
||||
|
||||
if (f32buf_sample(fp, option_inv, 1) == EOF) break;//goto ende;
|
||||
|
||||
xn[n % D] = bufs[sample_out % M];
|
||||
n++;
|
||||
|
||||
if (n % D == 0) {
|
||||
dft(xn, X);
|
||||
for (m = 0; m < N_DFT; m++) db[m] += cabs(X[m]);
|
||||
}
|
||||
}
|
||||
|
||||
df = bin2freq(1);
|
||||
m = 50.0/df;
|
||||
if (m < 1) m = 1;
|
||||
if (freq2bin(2500) > N_DFT/2) goto ende;
|
||||
|
||||
bin2200 = freq2bin(2200);
|
||||
pow2200 = 0.0;
|
||||
for (n = 0; n < m; n++) pow2200 += db[ bin2200 - m/4 + n ];
|
||||
|
||||
bin2400 = freq2bin(2400);
|
||||
pow2400 = 0.0;
|
||||
for (n = 0; n < m; n++) pow2400 += db[ bin2400 - m/4 + n ];
|
||||
|
||||
|
||||
mv[j] = fabs(mv[j]);
|
||||
|
||||
if (pow2200 > pow2400) { // IMET1RS
|
||||
mv[idxRS] = mv[j];
|
||||
mv[j] = 0; // IMET1 -> IMET1RS
|
||||
mv_pos[idxRS] = mv_pos[j];
|
||||
j = idxRS;
|
||||
header_found = 1;
|
||||
}
|
||||
else { // IMET1AB
|
||||
mv[j] = 0;
|
||||
j = idxAB;
|
||||
mv_pos[j] = sample_out;
|
||||
n = 0;
|
||||
|
||||
// detect header/polarity
|
||||
k = 0;
|
||||
while ( n < 4*sample_rate && f32buf_sample(fp, option_inv, 1) != EOF ) {
|
||||
|
||||
n += 1;
|
||||
k += 1;
|
||||
|
||||
if (k >= K-4) {
|
||||
mv0_pos[j] = mv_pos[j];
|
||||
mp[j] = getCorrDFT(-1, K, 0, mv+j, mv_pos+j, rs_hdr[j]);
|
||||
k = 0;
|
||||
}
|
||||
else {
|
||||
//mv[j] = 0.0;
|
||||
continue;
|
||||
}
|
||||
|
||||
if (mp[j] > 0 && (mv[j] > rs_hdr[j].thres || mv[j] < -rs_hdr[j].thres)) {
|
||||
header_found = 1;
|
||||
if (mv[j] < 0) header_found = -1;
|
||||
break;
|
||||
}
|
||||
mv[j] = 0.0;
|
||||
}
|
||||
}
|
||||
}
|
||||
else header_found = 1;
|
||||
|
||||
if (header_found) {
|
||||
if (!option_silent) {
|
||||
fprintf(stdout, "sample: %d\n", mv_pos[j]);
|
||||
fprintf(stdout, "%s: %.4f\n", rs_hdr[j].type, mv[j]);
|
||||
}
|
||||
if ((j < 3) && mv[j] < 0) header_found = -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (header_found) break;
|
||||
header_found = 0;
|
||||
for (j = 0; j < Nrs; j++) mv[j] = 0.0;
|
||||
}
|
||||
|
||||
ende:
|
||||
free_buffers();
|
||||
fclose(fp);
|
||||
|
||||
// return only best result
|
||||
// latest: j
|
||||
k = j;
|
||||
j_max = 0;
|
||||
mv_max = 0.0;
|
||||
for (j = 0; j < Nrs; j++) {
|
||||
if ( fabs(mv_max) < fabs(mv[j]) ) {
|
||||
mv_max = mv[j];
|
||||
j_max = j;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// rs_hdr[k].tn
|
||||
return (header_found * rs_hdr[j_max].tn);
|
||||
}
|
||||
|
||||
Ładowanie…
Reference in New Issue