void rc1_fft(REAL *data, complex *cdata, int n, int sign)
{
int j;
double *datft;
if (NINT(pow(2.0, (double)NINT(log((double)n)/log(2.0)))) != n) {
if (npfar(n) == n) pfarc(sign,n,data,cdata);
else rcdft(data,cdata,n,sign);
}
else {
datft = (double *)malloc(n*sizeof(double));
if (datft == NULL) fprintf(stderr,"rc1_fft: memory allocation error\n");
for (j = 0; j < n; j++) datft[j] = (double)data[j];
realfft(n, datft);
cdata[0].i = 0.0;
for (j = 0; j < n/2; j++) {
cdata[j].r = (REAL)datft[j];
cdata[j+1].i = sign*(REAL)datft[n-j-1];
}
cdata[n/2].r = datft[n/2];
cdata[n/2].i = 0.0;
free(datft);
}
return;
}
Var* ff_realfft(vfuncptr func, Var* arg)
{
Var* obj = NULL;
int i, n;
double *in, *out;
Alist alist[3];
alist[0] = make_alist("obj", ID_VAL, NULL, &obj);
alist[1].name = NULL;
if (parse_args(func, arg, alist) == 0) return (NULL);
if (obj == NULL) {
parse_error("%s: No object specified\n", func->name);
return (NULL);
}
n = V_DSIZE(obj);
in = (double*)calloc(n, sizeof(double));
out = (double*)calloc(n, sizeof(double));
for (i = 0; i < n; i++) {
in[i] = extract_double(obj, i);
}
if (func->fdata == (void*)1) {
realfft(in, n, out);
} else {
realrft(in, n, out);
}
return (newVal(BSQ, 1, n, 1, DV_DOUBLE, out));
}
int fft_waveform( doublewf_t *w, complexwf_t *fft ) {
if ( ! w || ! fft ) {
bpm_error( "Invalid waveform pointers in fft_waveform(...)",
__FILE__, __LINE__ );
return BPM_FAILURE;
}
return realfft( w, FFT_FORWARD, fft );
}
/*{{{ raw_fft(transform_info_ptr tinfo) {*/
METHODDEF DATATYPE *
raw_fft(transform_info_ptr tinfo) {
int i;
array myarray, fftarray;
long datasize, fftsize;
if (tinfo->itemsize==2) {
/*{{{ Do the inverse transform*/
if (tinfo->data_type==TIME_DATA) {
tinfo->nroffreq=tinfo->nr_of_points;
tinfo->nrofshifts=1;
}
datasize=tinfo->nroffreq;
fftsize=datasize-3;
for (i=0; fftsize>>=1; i++);
fftsize=1<<(i+2);
if (datasize!=fftsize/2+1 || tinfo->nrofshifts!=1) {
ERREXIT(tinfo->emethods, "raw_fft: Input spectra must have 2^n+1 frequencies, 2 items and 1 shift\n");
}
fftarray.nr_of_elements=fftsize;
fftarray.element_skip=1;
fftarray.nr_of_vectors=tinfo->nr_of_channels;
if (array_allocate(&fftarray)==NULL) {
ERREXIT(tinfo->emethods, "raw_fft: Error allocating memory\n");
}
/* We access tsdata as 1-item data already now (this makes copying easier) */
tinfo->itemsize=1;
tinfo->nr_of_points*=2;
tinfo->data_type=TIME_DATA;
tinfo_array(tinfo, &myarray);
do {
myarray.current_element=0;
myarray.current_vector=fftarray.current_vector;
realfft(ARRAY_ELEMENT(&myarray), fftsize, -1);
do {
array_write(&fftarray, array_scan(&myarray));
} while (fftarray.message==ARRAY_CONTINUE);
} while (fftarray.message==ARRAY_ENDOFVECTOR);
tinfo->nr_of_points=fftarray.nr_of_elements;
/*}}} */
} else {
void rcm_fft(REAL *data, complex *cdata, int n1, int n2, int ldr, int ldc, int sign)
{
int j, i;
double *datft;
if (NINT(pow(2.0, (double)NINT(log((double)n1)/log(2.0)))) != n1) {
if (npfar(n1) == n1) {
if (ldr == n1 && ldc == n2) {
pfa2rc(sign, 1, n1, n2, data, cdata);
}
else {
for (i = 0; i < n2; i++) {
pfarc(sign, n1, &data[i*ldr], &cdata[i*ldc]);
}
}
}
else {
for (i = 0; i < n2; i++) {
rcdft(&data[i*ldr], &cdata[i*ldc], n1, sign);
}
}
}
else {
datft = (double *)malloc(n1*sizeof(double));
if (datft == NULL) fprintf(stderr,"rcm_fft: memory allocation error\n");
for (i = 0; i < n2; i++) {
for (j = 0; j < n1; j++) datft[j] = (double)data[i*ldr+j];
realfft(n1, datft);
cdata[i*ldc].i = 0.0;
for (j = 0; j < n1/2; j++) {
cdata[i*ldc+j].r = (REAL)datft[j];
cdata[i*ldc+j+1].i = sign*(REAL)datft[n1-j-1];
}
cdata[i*ldc+n1/2].r = (REAL)datft[n1/2];
cdata[i*ldc+n1/2].i = 0.0;
}
free(datft);
}
return;
}
static void decibelspec(double *from, double *to)
{
double p, hr;
int i, j;
static double *w_table = NULL;
if(w_table == NULL)
{
double t;
w_table = (double *)safe_malloc(FFTSIZE * sizeof(double));
t = -M_PI;
for(i = 0; i < FFTSIZE; i++)
{
w_table[i] = 0.50 + 0.50 * cos(t);
t += 2.0 * M_PI / FFTSIZE;
}
}
for(i = 0; i < FFTSIZE; i++)
from[i] *= w_table[i];
realfft(from, FFTSIZE);
hr = AMP * NCOLOR;
if(from[0] >= 0)
p = from[0];
else
p = -from[0];
to[0] = log(1.0 + (128.0 / FFTSIZE) * p) * hr;
for(i = 1, j = FFTSIZE - 1; i < FFTSIZE/2; i++, j--)
{
double t, u;
t = from[i];
u = from[j];
to[i] = log(1.0 + (128.0 / FFTSIZE) * sqrt(t*t + u*u)) * hr;
}
p = from[FFTSIZE/2];
to[FFTSIZE/2] = log(1.0 + (128.0 / FFTSIZE) * sqrt(2 * p*p)) * hr;
}
void open_soundspec(void)
{
static int initflag = 0;
if( win.show){
ShowWindow(win.ref);
}
if(disp != NULL)
{ //already opened
ring_index = 0;
next_wakeup_samples = outcnt;
memset(ring_buffer, 0, ring_buffer_len * sizeof(int32));
view_soundspec_flag = 1;
return;
}
if(soundspec_update_interval == 0)
soundspec_update_interval = (int32)(DEFAULT_UPDATE * play_mode->rate);
disp=true;
if(!initflag)
{
ring_buffer = (long*)safe_malloc(ring_buffer_len * sizeof(int32));
realfft(NULL, FFTSIZE);
initialize_exp_hz_table(DEFAULT_ZOOM);
initflag = 1;
}
set_color_ring();
ring_index = 0;
next_wakeup_samples = outcnt;
memset(ring_buffer, 0, sizeof(int32));
view_soundspec_flag = 1;
}
int main(int argc, char *argv[])
{
FILE *bytemaskfile;
float **dataavg = NULL, **datastd = NULL, **datapow = NULL;
float *chandata = NULL, powavg, powstd, powmax;
float inttime, norm, fracterror = RFI_FRACTERROR;
float *rawdata = NULL;
unsigned char **bytemask = NULL;
short *srawdata = NULL;
char *outfilenm, *statsfilenm, *maskfilenm;
char *bytemaskfilenm, *rfifilenm;
int numchan = 0, numint = 0, newper = 0, oldper = 0, good_padvals = 0;
int blocksperint, ptsperint = 0, ptsperblock = 0, padding = 0;
int numcands, candnum, numrfi = 0, numrfivect = NUM_RFI_VECT;
int ii, jj, kk, slen, numread = 0, insubs = 0;
int harmsum = RFI_NUMHARMSUM, lobin = RFI_LOBIN, numbetween = RFI_NUMBETWEEN;
double davg, dvar, freq;
struct spectra_info s;
presto_interptype interptype;
rfi *rfivect = NULL;
mask oldmask, newmask;
fftcand *cands;
infodata idata;
Cmdline *cmd;
/* Call usage() if we have no command line arguments */
if (argc == 1) {
Program = argv[0];
printf("\n");
usage();
exit(0);
}
/* Parse the command line using the excellent program Clig */
cmd = parseCmdline(argc, argv);
spectra_info_set_defaults(&s);
s.filenames = cmd->argv;
s.num_files = cmd->argc;
s.clip_sigma = cmd->clip;
// -1 causes the data to determine if we use weights, scales, &
// offsets for PSRFITS or flip the band for any data type where
// we can figure that out with the data
s.apply_flipband = (cmd->invertP) ? 1 : -1;
s.apply_weight = (cmd->noweightsP) ? 0 : -1;
s.apply_scale = (cmd->noscalesP) ? 0 : -1;
s.apply_offset = (cmd->nooffsetsP) ? 0 : -1;
s.remove_zerodm = (cmd->zerodmP) ? 1 : 0;
if (cmd->noclipP) {
cmd->clip = 0.0;
s.clip_sigma = 0.0;
}
if (cmd->ifsP) {
// 0 = default or summed, 1-4 are possible also
s.use_poln = cmd->ifs;
}
slen = strlen(cmd->outfile) + 20;
#ifdef DEBUG
showOptionValues();
#endif
printf("\n\n");
printf(" Pulsar Data RFI Finder\n");
printf(" by Scott M. Ransom\n\n");
/* The following is the root of all the output files */
outfilenm = (char *) calloc(slen, sizeof(char));
sprintf(outfilenm, "%s_rfifind", cmd->outfile);
/* And here are the output file names */
maskfilenm = (char *) calloc(slen, sizeof(char));
sprintf(maskfilenm, "%s.mask", outfilenm);
bytemaskfilenm = (char *) calloc(slen, sizeof(char));
sprintf(bytemaskfilenm, "%s.bytemask", outfilenm);
rfifilenm = (char *) calloc(slen, sizeof(char));
sprintf(rfifilenm, "%s.rfi", outfilenm);
statsfilenm = (char *) calloc(slen, sizeof(char));
sprintf(statsfilenm, "%s.stats", outfilenm);
sprintf(idata.name, "%s", outfilenm);
if (RAWDATA) {
if (cmd->filterbankP) s.datatype = SIGPROCFB;
else if (cmd->psrfitsP) s.datatype = PSRFITS;
else if (cmd->pkmbP) s.datatype = SCAMP;
else if (cmd->bcpmP) s.datatype = BPP;
else if (cmd->wappP) s.datatype = WAPP;
else if (cmd->spigotP) s.datatype = SPIGOT;
} else { // Attempt to auto-identify the data
identify_psrdatatype(&s, 1);
if (s.datatype==SIGPROCFB) cmd->filterbankP = 1;
else if (s.datatype==PSRFITS) cmd->psrfitsP = 1;
else if (s.datatype==SCAMP) cmd->pkmbP = 1;
else if (s.datatype==BPP) cmd->bcpmP = 1;
else if (s.datatype==WAPP) cmd->wappP = 1;
else if (s.datatype==SPIGOT) cmd->spigotP = 1;
else if (s.datatype==SUBBAND) insubs = 1;
else {
printf("Error: Unable to identify input data files. Please specify type.\n\n");
exit(1);
}
}
if (!cmd->nocomputeP) {
if (RAWDATA || insubs) {
char description[40];
psrdatatype_description(description, s.datatype);
if (s.num_files > 1)
printf("Reading %s data from %d files:\n", description, s.num_files);
else
printf("Reading %s data from 1 file:\n", description);
if (insubs) s.files = (FILE **)malloc(sizeof(FILE *) * s.num_files);
for (ii = 0; ii < s.num_files; ii++) {
printf(" '%s'\n", cmd->argv[ii]);
if (insubs) s.files[ii] = chkfopen(cmd->argv[ii], "rb");
}
printf("\n");
}
if (RAWDATA) {
read_rawdata_files(&s);
print_spectra_info_summary(&s);
spectra_info_to_inf(&s, &idata);
ptsperblock = s.spectra_per_subint;
numchan = s.num_channels;
idata.dm = 0.0;
}
if (insubs) {
/* Set-up values if we are using subbands */
char *tmpname, *root, *suffix;
if (split_root_suffix(s.filenames[0], &root, &suffix) == 0) {
printf("Error: The input filename (%s) must have a suffix!\n\n", s.filenames[0]);
exit(1);
}
if (strncmp(suffix, "sub", 3) == 0) {
tmpname = calloc(strlen(root) + 6, 1);
sprintf(tmpname, "%s.sub", root);
readinf(&idata, tmpname);
free(tmpname);
} else {
printf("\nThe input files (%s) must be subbands! (i.e. *.sub##)\n\n",
s.filenames[0]);
exit(1);
}
free(root);
free(suffix);
ptsperblock = 1;
/* Compensate for the fact that we have subbands and not channels */
idata.freq = idata.freq - 0.5 * idata.chan_wid +
0.5 * idata.chan_wid * (idata.num_chan / s.num_files);
idata.chan_wid = idata.num_chan / s.num_files * idata.chan_wid;
idata.num_chan = numchan = s.num_files;
idata.dm = 0.0;
sprintf(idata.name, "%s", outfilenm);
writeinf(&idata);
s.padvals = gen_fvect(s.num_files);
for (ii = 0 ; ii < s.num_files ; ii++)
s.padvals[ii] = 0.0;
}
/* Read an input mask if wanted */
if (cmd->maskfileP) {
read_mask(cmd->maskfile, &oldmask);
printf("Read old mask information from '%s'\n\n", cmd->maskfile);
good_padvals = determine_padvals(cmd->maskfile, &oldmask, s.padvals);
} else {
oldmask.numchan = oldmask.numint = 0;
}
/* The number of data points and blocks to work with at a time */
if (cmd->blocksP) {
blocksperint = cmd->blocks;
cmd->time = blocksperint * ptsperblock * idata.dt;
} else {
blocksperint = (int) (cmd->time / (ptsperblock * idata.dt) + 0.5);
}
ptsperint = blocksperint * ptsperblock;
numint = (long long) idata.N / ptsperint;
if ((long long) idata.N % ptsperint)
numint++;
inttime = ptsperint * idata.dt;
printf("Analyzing data sections of length %d points (%.6g sec).\n",
ptsperint, inttime);
{
int *factors, numfactors;
factors = get_prime_factors(ptsperint, &numfactors);
printf(" Prime factors are: ");
for (ii = 0; ii < numfactors; ii++)
printf("%d ", factors[ii]);
printf("\n");
if (factors[numfactors - 1] > 13) {
printf(" WARNING: The largest prime factor is pretty big! This will\n"
" cause the FFTs to take a long time to compute. I\n"
" recommend choosing a different -time value.\n");
}
printf("\n");
free(factors);
}
/* Allocate our workarrays */
if (RAWDATA)
rawdata = gen_fvect(idata.num_chan * ptsperblock * blocksperint);
else if (insubs)
srawdata = gen_svect(idata.num_chan * ptsperblock * blocksperint);
dataavg = gen_fmatrix(numint, numchan);
datastd = gen_fmatrix(numint, numchan);
datapow = gen_fmatrix(numint, numchan);
chandata = gen_fvect(ptsperint);
bytemask = gen_bmatrix(numint, numchan);
for (ii = 0; ii < numint; ii++)
for (jj = 0; jj < numchan; jj++)
bytemask[ii][jj] = GOODDATA;
rfivect = rfi_vector(rfivect, numchan, numint, 0, numrfivect);
if (numbetween == 2)
interptype = INTERBIN;
else
interptype = INTERPOLATE;
/* Main loop */
printf("Writing mask data to '%s'.\n", maskfilenm);
printf("Writing RFI data to '%s'.\n", rfifilenm);
printf("Writing statistics to '%s'.\n\n", statsfilenm);
printf("Massaging the data ...\n\n");
printf("Amount Complete = %3d%%", oldper);
fflush(stdout);
for (ii = 0; ii < numint; ii++) { /* Loop over the intervals */
newper = (int) ((float) ii / numint * 100.0 + 0.5);
if (newper > oldper) {
printf("\rAmount Complete = %3d%%", newper);
fflush(stdout);
oldper = newper;
}
/* Read a chunk of data */
if (RAWDATA)
numread = read_rawblocks(rawdata, blocksperint, &s, &padding);
else if (insubs)
numread = read_subband_rawblocks(s.files, s.num_files,
srawdata, blocksperint, &padding);
if (padding)
for (jj = 0; jj < numchan; jj++)
bytemask[ii][jj] |= PADDING;
for (jj = 0; jj < numchan; jj++) { /* Loop over the channels */
if (RAWDATA)
get_channel(chandata, jj, blocksperint, rawdata, &s);
else if (insubs)
get_subband(jj, chandata, srawdata, blocksperint);
/* Calculate the averages and standard deviations */
/* for each point in time. */
if (padding) {
dataavg[ii][jj] = 0.0;
datastd[ii][jj] = 0.0;
datapow[ii][jj] = 1.0;
} else {
avg_var(chandata, ptsperint, &davg, &dvar);
dataavg[ii][jj] = davg;
datastd[ii][jj] = sqrt(dvar);
realfft(chandata, ptsperint, -1);
numcands = 0;
norm = datastd[ii][jj] * datastd[ii][jj] * ptsperint;
if (norm == 0.0)
norm = (chandata[0] == 0.0) ? 1.0 : chandata[0];
cands = search_fft((fcomplex *) chandata, ptsperint / 2,
lobin, ptsperint / 2, harmsum,
numbetween, interptype, norm, cmd->freqsigma,
&numcands, &powavg, &powstd, &powmax);
datapow[ii][jj] = powmax;
/* Record the birdies */
if (numcands) {
for (kk = 0; kk < numcands; kk++) {
freq = cands[kk].r / inttime;
candnum = find_rfi(rfivect, numrfi, freq, RFI_FRACTERROR);
if (candnum >= 0) {
update_rfi(rfivect + candnum, freq, cands[kk].sig, jj, ii);
} else {
update_rfi(rfivect + numrfi, freq, cands[kk].sig, jj, ii);
numrfi++;
if (numrfi == numrfivect) {
numrfivect *= 2;
rfivect = rfi_vector(rfivect, numchan, numint,
numrfivect / 2, numrfivect);
}
}
}
free(cands);
}
}
}
}
printf("\rAmount Complete = 100%%\n");
/* Write the data to the output files */
write_rfifile(rfifilenm, rfivect, numrfi, numchan, numint,
ptsperint, lobin, numbetween, harmsum,
fracterror, cmd->freqsigma);
write_statsfile(statsfilenm, datapow[0], dataavg[0], datastd[0],
numchan, numint, ptsperint, lobin, numbetween);
} else { /* If "-nocompute" */
float freqsigma;
/* Read the data from the output files */
printf("Reading RFI data from '%s'.\n", rfifilenm);
printf("Reading statistics from '%s'.\n", statsfilenm);
readinf(&idata, outfilenm);
read_rfifile(rfifilenm, &rfivect, &numrfi, &numchan, &numint,
&ptsperint, &lobin, &numbetween, &harmsum,
&fracterror, &freqsigma);
numrfivect = numrfi;
read_statsfile(statsfilenm, &datapow, &dataavg, &datastd,
&numchan, &numint, &ptsperint, &lobin, &numbetween);
bytemask = gen_bmatrix(numint, numchan);
printf("Reading bytemask from '%s'.\n\n", bytemaskfilenm);
bytemaskfile = chkfopen(bytemaskfilenm, "rb");
chkfread(bytemask[0], numint * numchan, 1, bytemaskfile);
fclose(bytemaskfile);
for (ii = 0; ii < numint; ii++)
for (jj = 0; jj < numchan; jj++)
bytemask[ii][jj] &= PADDING; /* Clear all but the PADDING bits */
inttime = ptsperint * idata.dt;
}
/* Make the plots and set the mask */
{
int *zapints, *zapchan;
int numzapints = 0, numzapchan = 0;
if (cmd->zapintsstrP) {
zapints = ranges_to_ivect(cmd->zapintsstr, 0, numint - 1, &numzapints);
zapints = (int *) realloc(zapints, (size_t) (sizeof(int) * numint));
} else {
zapints = gen_ivect(numint);
}
if (cmd->zapchanstrP) {
zapchan = ranges_to_ivect(cmd->zapchanstr, 0, numchan - 1, &numzapchan);
zapchan = (int *) realloc(zapchan, (size_t) (sizeof(int) * numchan));
} else {
zapchan = gen_ivect(numchan);
}
rfifind_plot(numchan, numint, ptsperint, cmd->timesigma, cmd->freqsigma,
cmd->inttrigfrac, cmd->chantrigfrac,
dataavg, datastd, datapow, zapchan, numzapchan,
zapints, numzapints, &idata, bytemask,
&oldmask, &newmask, rfivect, numrfi,
cmd->rfixwinP, cmd->rfipsP, cmd->xwinP);
vect_free(zapints);
vect_free(zapchan);
}
/* Write the new mask and bytemask to the file */
write_mask(maskfilenm, &newmask);
bytemaskfile = chkfopen(bytemaskfilenm, "wb");
chkfwrite(bytemask[0], numint * numchan, 1, bytemaskfile);
fclose(bytemaskfile);
/* Determine the percent of good and bad data */
{
int numpad = 0, numbad = 0, numgood = 0;
for (ii = 0; ii < numint; ii++) {
for (jj = 0; jj < numchan; jj++) {
if (bytemask[ii][jj] == GOODDATA) {
numgood++;
} else {
if (bytemask[ii][jj] & PADDING)
numpad++;
else
numbad++;
}
}
}
printf("\nTotal number of intervals in the data: %d\n\n", numint * numchan);
printf(" Number of padded intervals: %7d (%6.3f%%)\n",
numpad, (float) numpad / (float) (numint * numchan) * 100.0);
printf(" Number of good intervals: %7d (%6.3f%%)\n",
numgood, (float) numgood / (float) (numint * numchan) * 100.0);
printf(" Number of bad intervals: %7d (%6.3f%%)\n\n",
numbad, (float) numbad / (float) (numint * numchan) * 100.0);
qsort(rfivect, numrfi, sizeof(rfi), compare_rfi_sigma);
printf(" Ten most significant birdies:\n");
printf("# Sigma Period(ms) Freq(Hz) Number \n");
printf("----------------------------------------------------\n");
for (ii = 0; ii < 10; ii++) {
double pperr;
char temp1[40], temp2[40];
if (rfivect[ii].freq_var == 0.0) {
pperr = 0.0;
sprintf(temp1, " %-14g", rfivect[ii].freq_avg);
sprintf(temp2, " %-14g", 1000.0 / rfivect[ii].freq_avg);
} else {
pperr = 1000.0 * sqrt(rfivect[ii].freq_var) /
(rfivect[ii].freq_avg * rfivect[ii].freq_avg);
nice_output_2(temp1, rfivect[ii].freq_avg, sqrt(rfivect[ii].freq_var),
-15);
nice_output_2(temp2, 1000.0 / rfivect[ii].freq_avg, pperr, -15);
}
printf("%-2d %-8.2f %13s %13s %-8d\n", ii + 1, rfivect[ii].sigma_avg,
temp2, temp1, rfivect[ii].numobs);
}
qsort(rfivect, numrfi, sizeof(rfi), compare_rfi_numobs);
printf("\n Ten most numerous birdies:\n");
printf("# Number Period(ms) Freq(Hz) Sigma \n");
printf("----------------------------------------------------\n");
for (ii = 0; ii < 10; ii++) {
double pperr;
char temp1[40], temp2[40];
if (rfivect[ii].freq_var == 0.0) {
pperr = 0.0;
sprintf(temp1, " %-14g", rfivect[ii].freq_avg);
sprintf(temp2, " %-14g", 1000.0 / rfivect[ii].freq_avg);
} else {
pperr = 1000.0 * sqrt(rfivect[ii].freq_var) /
(rfivect[ii].freq_avg * rfivect[ii].freq_avg);
nice_output_2(temp1, rfivect[ii].freq_avg, sqrt(rfivect[ii].freq_var),
-15);
nice_output_2(temp2, 1000.0 / rfivect[ii].freq_avg, pperr, -15);
}
printf("%-2d %-8d %13s %13s %-8.2f\n", ii + 1, rfivect[ii].numobs,
temp2, temp1, rfivect[ii].sigma_avg);
}
printf("\nDone.\n\n");
}
/* Close the files and cleanup */
free_rfi_vector(rfivect, numrfivect);
free_mask(newmask);
if (cmd->maskfileP)
free_mask(oldmask);
free(outfilenm);
free(statsfilenm);
free(bytemaskfilenm);
free(maskfilenm);
free(rfifilenm);
vect_free(dataavg[0]);
vect_free(dataavg);
vect_free(datastd[0]);
vect_free(datastd);
vect_free(datapow[0]);
vect_free(datapow);
vect_free(bytemask[0]);
vect_free(bytemask);
if (!cmd->nocomputeP) {
// Close all the raw files and free their vectors
close_rawfiles(&s);
vect_free(chandata);
if (insubs)
vect_free(srawdata);
else
vect_free(rawdata);
}
return (0);
}
t_int *stft_perform(t_int *w)
{
t_stft *x = (t_stft *)(w[1]);
float *inreal = (float *)(w[2]);
float *outreal = (float *)(w[3]);
int n = w[4];
int i, m, np, count;
long pts = x->x_fftsize;
long hop = x->x_hop;
float *b;
float *ei = x->x_in + pts; // indicates end pointer of buffer
float *eo = x->x_out + pts;
//float mult = x->x_1overpts;
float *wind = x->x_window;
if (x->x_obj.z_disabled)
goto exit;
if (n > pts) { // if sigvect > fftsize
np = pts;
count = n / pts;
} else {
np = n;
count = 1;
}
m = np;
set_zero(outreal, n);
while (count--) { // do big loop just once if sigvect < fftsize
b = x->x_inptr; // copy signal into input buffer
BlockMove(inreal,b, np * sizeof(float));
b += np; // increment temp input pointer by sigvs
// we will increment input pointer later
if (b == ei) { // if temp input pointer is at end
float *real = x->x_out;
float *freal = x->x_out;
t_complex *frame = x->x_sdifbuf;
long wpts = pts;
long fpts = x->x_sdifbufsize -1;
// copy input buffer into oputput buffer and fft the outbuffer
BlockMove(x->x_in,x->x_out,pts * sizeof(float));
while (wpts--)
*real++ *= *wind++; // do windowing
realfft(pts, x->x_out); // perform mayer FFT
//fftRealfast(pts, x->x_out, x->x_twiddle); // REALFAST FFT
*outreal = 1.0; //send just a click out
// fill sdifbuf
for (i=1; i< fpts; i++) {
x->x_sdifbuf[i].re = x->x_out[i];
x->x_sdifbuf[i].im = x->x_out[i+fpts];
}
x->x_sdifbuf[0].re = x->x_out[0];
x->x_sdifbuf[fpts].re = x->x_out[fpts];
x->x_sdifbuf[0].im = x->x_sdifbuf[fpts].im = 0.;
// shift and reset i/o buffer pointers
BlockMove(x->x_in+hop,x->x_in,(pts-hop) * sizeof(float));
x->x_inptr = x->x_in +pts-hop;
} else if (b) { // otherwise just increment input pointer
x->x_inptr += np;
}
}
exit:
return (w + 5);
}
int main(int argc, char *argv[])
{
float *data;
int status, isign;
unsigned long numdata;
/* unsigned long next2ton; */
FILE *datafile, *scratchfile;
char datafilenm[100], scratchfilenm[100], resultfilenm[100];
char command[80];
struct tms runtimes;
double ttim, stim, utim, tott;
tott = times(&runtimes) / (double) CLK_TCK;
printf("\n\n");
printf(" Real-Valued Data FFT Program v2.0\n");
printf(" by Scott M. Ransom\n");
printf(" 8 June, 1997\n\n");
if ((argc > 1) && (argc < 7)) {
/* Open and check data file. */
if (argc == 3) {
sprintf(datafilenm, "%s.", argv[2]);
sprintf(scratchfilenm, "%s.tmp", argv[2]);
sprintf(resultfilenm, "%s.", argv[2]);
}
if (argc == 4) {
sprintf(datafilenm, "%s/%s.", argv[3], argv[2]);
sprintf(scratchfilenm, "%s/%s.tmp", argv[3], argv[2]);
sprintf(resultfilenm, "%s/%s.", argv[3], argv[2]);
}
if (argc == 5) {
sprintf(datafilenm, "%s/%s.", argv[3], argv[2]);
sprintf(scratchfilenm, "%s/%s.tmp", argv[4], argv[2]);
sprintf(resultfilenm, "%s/%s.", argv[3], argv[2]);
}
isign = atoi(argv[1]);
/* Add the appropriate suffix to the filenames. */
if (isign == 1) {
strcat(datafilenm, "fft");
strcat(resultfilenm, "dat");
} else {
strcat(datafilenm, "dat");
strcat(resultfilenm, "fft");
}
/* Check the input data set... */
printf("Checking data in \"%s\".\n", datafilenm);
datafile = chkfopen(datafilenm, "rb");
/* # of real data points */
numdata = chkfilelen(datafile, sizeof(float));
/* next2ton = next2_to_n(numdata); */
/* if (numdata != next2ton) { */
/* printf("\nNumber of data pts must be an integer power of two,\n"); */
/* printf(" or data must be single precision floats.\n"); */
/* printf("Exiting.\n\n"); */
/* fclose(datafile); */
/* exit(1); */
/* } */
printf("Data OK. There are %ld points.\n\n", numdata);
fclose(datafile);
} else {
printf("\nUsage: realfft sign datafilename [ data path] ");
printf("[scratch path]\n\n");
printf(" This program calculates the FFT of a file containing\n");
printf(" a power-of-two number of floats representing\n");
printf(" real numbers. (i.e. a normal time series)\n\n");
printf(" THE INPUT FILE WILL BE OVERWRITTEN.\n\n");
printf(" \"sign\" is the sign of the exponential during the FFT. \n");
printf(" (i.e. -1 is the standard forward transform, 1 is the\n");
printf(" inverse transform times N (the number of floats))\n");
printf(" If both paths are omitted, the data is assumed to be\n");
printf(" located in the working directory, and the scratch space\n");
printf(" if needed will be located there. If only one path is\n");
printf(" given, both input and scratch files will reside there.\n\n");
printf(" Notes:\n");
printf(" - datafilename must not include \".dat\" or \".fft\"\n");
printf(" suffix. It will be added by the program.\n");
printf(" - Do not end paths in \"/\".\n");
printf(" - The scratch file is the same size as the input file.\n");
printf(" - If \"sign\"=1, the file to be transformed should end\n");
printf(" with \".fft\". Otherwise, it should end with\n");
printf(" \".dat\".\n\n");
exit(0);
}
/* Start the transform sequence */
if (numdata > MAXREALFFT) {
/* Perform Two-Pass, Out-of-Core, FFT */
printf("Performing Out-of-Core Two-Pass FFT on data.\n\n");
printf("Result will be stored in the file \"%s\".\n", resultfilenm);
/* Initialize files. */
datafile = chkfopen(datafilenm, "rb+");
scratchfile = chkfopen(scratchfilenm, "wb+");
printf("\nTransforming...\n");
/* Call Two-Pass routine */
if (isign == 1) {
realfft_scratch_inv(datafile, scratchfile, numdata);
} else {
realfft_scratch_fwd(datafile, scratchfile, numdata);
}
fclose(scratchfile);
sprintf(command, "rm -f %s\n", scratchfilenm);
if ((status = (system(command))) == -1 || status == 127) {
perror("\nSystem call (rm) failed");
printf("\n");
exit(1);
}
printf("Finished.\n\n");
printf("Timing summary:\n");
tott = times(&runtimes) / (double) CLK_TCK - tott;
utim = runtimes.tms_utime / (double) CLK_TCK;
stim = runtimes.tms_stime / (double) CLK_TCK;
ttim = utim + stim;
printf("CPU usage: %.3f sec total (%.3f sec user, %.3f sec system)\n",
ttim, utim, stim);
printf("Total time elapsed: %.3f sec.\n\n", tott);
} else {
/* Perform standard FFT for real functions */
printf("Performing in-core FFT for real functions on data.\n\n");
printf("FFT will be stored in the file \"%s\".\n\n", resultfilenm);
/* Open the data and fft results files. */
datafile = chkfopen(datafilenm, "rb+");
/* Read data from file to data array */
printf("Reading data.\n\n");
data = gen_fvect(numdata);
chkfread(data, sizeof(float), (unsigned long) numdata, datafile);
chkfileseek(datafile, 0L, sizeof(char), SEEK_SET);
/* Start and time the transform */
printf("Transforming...\n");
realfft(data, numdata, isign);
printf("Finished.\n\n");
/* Write data from FFT array to file */
printf("Writing FFT data.\n\n");
chkfwrite(data, sizeof(float), (unsigned long) numdata, datafile);
vect_free(data);
/* Output the timing information */
printf("Timing summary:\n");
tott = times(&runtimes) / (double) CLK_TCK - tott;
utim = runtimes.tms_utime / (double) CLK_TCK;
stim = runtimes.tms_stime / (double) CLK_TCK;
ttim = utim + stim;
printf("CPU usage: %.3f sec total (%.3f sec user, %.3f sec system)\n",
ttim, utim, stim);
printf("Total time elapsed: %.3f sec.\n\n", tott);
}
sprintf(command, "mv %s %s\n", datafilenm, resultfilenm);
if ((status = (system(command))) == -1 || status == 127) {
perror("\nSystem call (mv) failed");
printf("\n");
exit(1);
}
fclose(datafile);
/*
fftw_print_max_memory_usage();
fftw_check_memory_leaks();
*/
exit(0);
}
float *real_corr_conv(float *data, float *kernel, int numdata,
presto_ffts ffts, presto_optype type)
/* Perform and return a real-valued correlation or convolution. */
/* Arguments: */
/* 'data' is the complex array to correlate/convolve. */
/* 'kernel' is the correlation/convolution kernel. */
/* 'numdata' is the length of 'data', 'kernel' and the result. */
/* 'ffts' describes how to perform the convolution/correlation. */
/* 'ffts' = FFTDK: FFT both the 'data' and the 'kernel'. */
/* 'ffts' = FFTD: FFT only the 'data' not the 'kernel'. */
/* 'ffts' = FFTK: FFT only the 'kernel' not the 'data'. */
/* 'ffts' = NOFFTS: Don't FFT the 'data' or the 'kernel'. */
/* 'type' is the type of operation to perform. */
/* 'type' = CONV: return a convolution in a new vector. */
/* 'type' = CORR: return a correlation in a new vector. */
/* 'type' = INPLACE_CONV: convolution over-writes 'data'. */
/* 'type' = INPLACE_CORR: correlation over-writes 'data'. */
{
int ii;
float normal, tmpd, tmpk, *tmpdat;
fcomplex *fcdata, *fckern;
/* Get the normalization factor */
normal = 2.0 / numdata;
/* Set up all our parameters */
if (ffts > 3) {
printf("\nIllegal 'ffts' option (%d) in real_corr_conv().\n", ffts);
printf("Exiting\n\n");
exit(1);
}
if (type > 3) {
printf("\nIllegal 'type' option (%d) in real_corr_conv().\n", ffts);
printf("Exiting\n\n");
exit(1);
}
if (type == INPLACE_CONV || type == INPLACE_CORR) {
tmpdat = data;
} else {
tmpdat = gen_fvect(numdata);
memcpy(tmpdat, data, sizeof(float) * numdata);
}
if (ffts == FFTDK || ffts == FFTD) {
realfft(tmpdat, numdata, -1);
}
if (ffts == FFTDK || ffts == FFTK) {
realfft(kernel, numdata, -1);
}
// Act like our packed-complex floats are really fcomplex values
fcdata = (fcomplex *)tmpdat;
fckern = (fcomplex *)kernel;
// Do the complex multiplications
if (type == CORR || type == INPLACE_CORR) {
for (ii = 1; ii < numdata / 2; ii++) {
tmpd = fcdata[ii].r;
tmpk = fckern[ii].r;
fcdata[ii].r = (tmpd * tmpk + fcdata[ii].i * fckern[ii].i)
* normal;
fcdata[ii].i = (fcdata[ii].i * tmpk - fckern[ii].i * tmpd)
* normal;
}
} else {
for (ii = 1; ii < numdata / 2; ii++) {
tmpd = fcdata[ii].r;
tmpk = fckern[ii].r;
fcdata[ii].r = (tmpd * tmpk - fcdata[ii].i * fckern[ii].i)
* normal;
fcdata[ii].i = (fcdata[ii].i * tmpk + fckern[ii].i * tmpd)
* normal;
}
}
// Now handle bin zero
fcdata[0].r *= fckern[0].r * normal;
fcdata[0].i *= fckern[0].i * normal;
// Perform the inverse FFT on the result and return
realfft(tmpdat, numdata, 1);
return tmpdat;
}
int main(int argc, char *argv[])
{
FILE *fftfile, *candfile = NULL, *psfile = NULL;
char filenm[100], candnm[100], psfilenm[120];
float locpow, norm, powargr, powargi;
float *powr, *spreadpow, *minizoompow, *freqs;
fcomplex *data, *minifft, *minizoom, *spread;
fcomplex *resp, *kernel;
double T, dr, ftobinp;
int ii, nbins, ncands, candnum, lofreq = 0, nzoom, numsumpow = 1;
int numbetween, numkern, kern_half_width;
binaryprops binprops;
infodata idata;
if (argc < 3 || argc > 6) {
usage();
exit(1);
}
printf("\n\n");
printf(" Binary Candidate Display Routine\n");
printf(" by Scott M. Ransom\n\n");
/* Initialize the filenames: */
sprintf(filenm, "%s.fft", argv[1]);
sprintf(candnm, "%s_bin.cand", argv[1]);
/* Read the info file */
readinf(&idata, argv[1]);
if (idata.object) {
printf("Plotting a %s candidate from '%s'.\n", idata.object, filenm);
} else {
printf("Plotting a candidate from '%s'.\n", filenm);
}
T = idata.N * idata.dt;
/* Open the FFT file and get its length */
fftfile = chkfopen(filenm, "rb");
nbins = chkfilelen(fftfile, sizeof(fcomplex));
/* Open the candidate file and get its length */
candfile = chkfopen(candnm, "rb");
ncands = chkfilelen(candfile, sizeof(binaryprops));
/* The candidate number to examine */
candnum = atoi(argv[2]);
/* Check that candnum is in range */
if ((candnum < 1) || (candnum > ncands)) {
printf("\nThe candidate number is out of range.\n\n");
exit(1);
}
/* The lowest freq present in the FFT file */
if (argc >= 4) {
lofreq = atoi(argv[3]);
if ((lofreq < 0) || (lofreq > nbins - 1)) {
printf("\n'lofreq' is out of range.\n\n");
exit(1);
}
}
/* Is the original FFT a sum of other FFTs with the amplitudes added */
/* in quadrature? (i.e. an incoherent sum) */
if (argc >= 5) {
numsumpow = atoi(argv[4]);
if (numsumpow < 1) {
printf("\nNumber of summed powers must be at least one.\n\n");
exit(1);
}
}
/* Initialize PGPLOT using Postscript if requested */
if ((argc == 6) && (!strcmp(argv[5], "ps"))) {
sprintf(psfilenm, "%s_bin_cand_%d.ps", argv[1], candnum);
cpgstart_ps(psfilenm, "landscape");
} else {
cpgstart_x("landscape");
}
/* Read the binary candidate */
chkfileseek(candfile, (long) (candnum - 1), sizeof(binaryprops), SEEK_SET);
chkfread(&binprops, sizeof(binaryprops), 1, candfile);
fclose(candfile);
/* Output the binary candidate */
print_bin_candidate(&binprops, 2);
/* Allocate some memory */
powr = gen_fvect(binprops.nfftbins);
minifft = gen_cvect(binprops.nfftbins / 2);
spread = gen_cvect(binprops.nfftbins);
spreadpow = gen_fvect(binprops.nfftbins);
nzoom = 2 * ZOOMFACT * ZOOMNEIGHBORS;
minizoom = gen_cvect(nzoom);
minizoompow = gen_fvect(nzoom);
/* Allocate and initialize our interpolation kernel */
numbetween = 2;
kern_half_width = r_resp_halfwidth(LOWACC);
numkern = 2 * numbetween * kern_half_width;
resp = gen_r_response(0.0, numbetween, numkern);
kernel = gen_cvect(binprops.nfftbins);
place_complex_kernel(resp, numkern, kernel, binprops.nfftbins);
COMPLEXFFT(kernel, binprops.nfftbins, -1);
/* Read the data from the FFT file */
data = read_fcomplex_file(fftfile, binprops.lowbin - lofreq, binprops.nfftbins);
/* Turn the Fourier amplitudes into powers */
for (ii = 0; ii < binprops.nfftbins; ii++)
powr[ii] = POWER(data[ii].r, data[ii].i);
/* Chop the powers that are way above the median level */
prune_powers(powr, binprops.nfftbins, numsumpow);
/* Perform the minifft */
memcpy((float *) minifft, powr, sizeof(float) * binprops.nfftbins);
realfft((float *) minifft, binprops.nfftbins, -1);
/* Calculate the normalization constant */
norm = sqrt((double) binprops.nfftbins * (double) numsumpow) / minifft[0].r;
locpow = minifft[0].r / binprops.nfftbins;
/* Divide the original power spectrum by the local power level */
for (ii = 0; ii < binprops.nfftbins; ii++)
powr[ii] /= locpow;
/* Now normalize the miniFFT */
minifft[0].r = 1.0;
minifft[0].i = 1.0;
for (ii = 1; ii < binprops.nfftbins / 2; ii++) {
minifft[ii].r *= norm;
minifft[ii].i *= norm;
}
/* Interpolate the minifft and convert to power spectrum */
corr_complex(minifft, binprops.nfftbins / 2, RAW,
kernel, binprops.nfftbins, FFT,
spread, binprops.nfftbins, kern_half_width,
numbetween, kern_half_width, CORR);
for (ii = 0; ii < binprops.nfftbins; ii++)
spreadpow[ii] = POWER(spread[ii].r, spread[ii].i);
/* Plot the initial data set */
freqs = gen_freqs(binprops.nfftbins, binprops.lowbin / T, 1.0 / T);
xyline(binprops.nfftbins, freqs, powr, "Pulsar Frequency (hz)",
"Power / Local Power", 1);
vect_free(freqs);
printf("The initial data set (with high power outliers removed):\n\n");
/* Plot the miniFFT */
freqs = gen_freqs(binprops.nfftbins, 0.0, T / (2 * binprops.nfftbins));
xyline(binprops.nfftbins, freqs, spreadpow, "Binary Period (sec)",
"Normalized Power", 1);
vect_free(freqs);
printf("The miniFFT:\n\n");
/* Interpolate and plot the actual candidate peak */
ftobinp = T / binprops.nfftbins;
freqs = gen_freqs(nzoom, (binprops.rdetect - ZOOMNEIGHBORS) *
ftobinp, ftobinp / (double) ZOOMFACT);
for (ii = 0; ii < nzoom; ii++) {
dr = -ZOOMNEIGHBORS + (double) ii / ZOOMFACT;
rz_interp(minifft, binprops.nfftbins / 2, binprops.rdetect + dr,
0.0, kern_half_width, &minizoom[ii]);
minizoompow[ii] = POWER(minizoom[ii].r, minizoom[ii].i);
}
xyline(nzoom, freqs, minizoompow, "Binary Period (sec)", "Normalized Power", 1);
vect_free(freqs);
printf("The candidate itself:\n\n");
printf("Done.\n\n");
/* Cleanup */
cpgend();
vect_free(data);
vect_free(powr);
vect_free(resp);
vect_free(kernel);
vect_free(minifft);
vect_free(spread);
vect_free(spreadpow);
vect_free(minizoom);
vect_free(minizoompow);
fclose(fftfile);
if ((argc == 6) && (!strcmp(argv[5], "ps"))) {
fclose(psfile);
}
return (0);
}
t_int *fft_real_perform(t_int *w)
{
t_fft *x = (t_fft *)(w[1]);
float *in = (float *)(w[2]);
float *out = (float *)(w[3]);
float *outsync = (float *)(w[4]);
int n = w[5],m,np,count;
long pts = x->f_points, interval = x->f_interval;
float *b, *ei = x->f_realin + pts, *eo = x->f_realout + pts;
float mult = x->f_1overpts;
if (x->f_obj.z_disabled)
goto out;
if (n > pts) {
np = pts;
count = n / pts;
} else {
np = n;
count = 1;
}
m = np;
while (count--) {
#ifdef USING_PHASE
if (x->f_start) {
long phase = x->f_phase % interval;
if (phase < pts)
x->f_realoutptr = x->f_realout + phase;
else
x->f_realoutptr = x->f_realout + pts;
if (pts + phase >= interval) {
x->f_countdown = 0;
x->f_realinptr = x->f_realin + (pts + phase - interval);
} else {
x->f_countdown = (interval - phase - pts) / np;
x->f_realinptr = x->f_realin;
}
x->f_start = 0;
}
#endif
if (x->f_countdown) {
x->f_countdown--;
b = 0;
} else {
b = x->f_realinptr;
BlockMove(in,b, np * sizeof(float));
b += np;
}
if (x->f_realoutptr != eo) {
double q = (int)(x->f_realoutptr - x->f_realout);
BlockMove(x->f_realoutptr,out,np * sizeof(float));
x->f_realoutptr += np;
if (!fts_mode) {
while (m--) {
*outsync++ = q;
q += 1.0;
}
}
} else {
if (!fts_mode) {
while (m--)
*outsync++ = 0.;
}
}
if (b == ei) {
BlockMove(x->f_realin,x->f_realout,pts * sizeof(float));
if (x->f_inverse) {
float *real = x->f_realout;
float mult = x->f_1overpts;
realifft(pts, real);
while (pts--)
*real++ *= mult;
} else
realfft(pts, x->f_realout);
x->f_realoutptr = x->f_realout;
x->f_realinptr = x->f_realin;
x->f_countdown = (interval - x->f_points) / np;
if (fts_mode)
clock_delay(x->f_clock, 0L);
} else if (b) {
x->f_realinptr += np;
}
}
out:
return (w + 6);
}
void soundspec_update_wave(int32 *buff, int samples)
{
int i;
if(buff == NULL) /* Initialize */
{
ring_index = 0;
if(samples == 0)
{
outcnt = 0;
next_wakeup_samples = 0;
}
if(ring_buffer != NULL)
memset(ring_buffer, 0, sizeof(int32));
return;
}
if(!view_soundspec_flag && !ctl_speana_flag)
{
outcnt += samples;
return;
}
if(ring_buffer == NULL)
{
ring_buffer = safe_malloc(ring_buffer_len * sizeof(int32));
memset(ring_buffer, 0, sizeof(int32));
if(soundspec_update_interval == 0)
soundspec_update_interval =
(int32)(DEFAULT_UPDATE * play_mode->rate);
realfft(NULL, FFTSIZE);
initialize_exp_hz_table(soundspec_zoom);
}
if(ring_index + samples > ring_buffer_len)
{
int d;
d = ring_buffer_len - ring_index;
if(play_mode->encoding & PE_MONO)
memcpy(ring_buffer + ring_index, buff, d * 4);
else
{
int32 *p;
int n;
p = ring_buffer + ring_index;
n = d * 2;
for(i = 0; i < n; i += 2)
*p++ = (buff[i] + buff[i + 1]) / 2;
}
ring_index = 0;
outcnt += d;
samples -= d;
}
if(play_mode->encoding & PE_MONO)
memcpy(ring_buffer + ring_index, buff, samples * 4);
else
{
int32 *p;
int n;
p = ring_buffer + ring_index;
n = samples * 2;
for(i = 0; i < n; i += 2)
*p++ = (buff[i] + buff[i + 1]) / 2;
}
ring_index += samples;
outcnt += samples;
if(ring_index == ring_buffer_len)
ring_index = 0;
if(next_wakeup_samples < outcnt - (ring_buffer_len - FFTSIZE))
{
/* next_wakeup_samples is too small */
next_wakeup_samples = outcnt - (ring_buffer_len - FFTSIZE);
}
while(next_wakeup_samples < outcnt - FFTSIZE)
{
double x[FFTSIZE];
struct drawing_queue *q;
ringsamples(x, next_wakeup_samples % ring_buffer_len, FFTSIZE);
q = new_queue();
decibelspec(x, q->values);
push_midi_time_vp(midi_trace.offset + next_wakeup_samples,
trace_draw_scope,
q);
next_wakeup_samples += soundspec_update_interval;
}
}
float TramaParametriza(Ttrastero *trastero,TTrastero2 *trastero2,int32 nframes, Tparamet *paramet)
{
float total;
FILE *fp;
static int gendatos = 0;
if (gendatos == 0)
{
fp = fopen("datospar.sal", "wt");
fprintf(fp, "Coef preenf: %f\n", __coef_preenf);
fprintf(fp, "Coef rasta : %f\n", __coef_rasta);
fprintf(fp, "Coef preenf rasta: %f\n", trastero->preenf);
fclose(fp);
}
else
gendatos = 1;
VectorImprimir("jlpc.dep",nframes,trastero->a,__long_ventana,"antes preenf...");
//VectorImprimir("jlpc.dep",nframes,trastero->hamwei,__long_ventana,"hamwei");
Hamm_Preenf(trastero->a, trastero->hamwei,__coef_preenf);
VectorImprimir("jlpc.dep",nframes,trastero->a,__long_ventana,"tras preenf...");
/* CÁLCULO DE LA FFT PARA CADA TRAMA */
realfft(__fft_points,trastero->a);
Energia(trastero->a,trastero->c,__fft_points/2,trastero->y);
VectorImprimir("jlpc.dep",nframes,trastero->c,__fft_points/2,"FFT");
total=Promedio(trastero->c,__fft_points/2);
total=10*LOG10(total);
__energias[nframes]=paramet->mfc[0][nframes][__numParam-1]=trastero->nmfc[nframes][__numParam-1]=total;
//__ErrMsg(stderr,"mfcc y energ'ia\n");
/* ENERGÍA EN CADA FILTRO */
plp(trastero->pptr.nfilts, trastero->filwei, trastero->ibegen, trastero->c,
trastero->sp, trastero->splog, nframes, trastero->filtertype);
VectorImprimir("jlpc.dep",nframes,trastero->splog[nframes],
trastero->pptr.nfilts,"LogEnergBand tras PLP");
//__ErrMsg(stderr,"plp\n");
/* RASTA FILTERING AND RASTA MEL */
rasta_trama (trastero->pptr.nfilts, trastero->preenf, trastero->sp,
trastero->splog, trastero->spfilt, nframes, paramet->mfc,
trastero->nmfc,trastero->filtertype, trastero->_melNum,&(trastero->pptr));
if (nframes>=4)
{
VectorImprimir("jlpc.dep",nframes-4,trastero->splog[nframes-4],trastero->pptr.nfilts,"LogEnergBand2 tras PLP");
VectorImprimir("jlpc.dep",nframes-3,trastero->splog[nframes-3],trastero->pptr.nfilts,"LogEnergBand2 tras PLP");
VectorImprimir("jlpc.dep",nframes-2,trastero->splog[nframes-2],trastero->pptr.nfilts,"LogEnergBand2 tras PLP");
VectorImprimir("jlpc.dep",nframes-1,trastero->splog[nframes-1],trastero->pptr.nfilts,"LogEnergBand2 tras PLP");
VectorImprimir("jlpc.dep",nframes,trastero->splog[nframes],trastero->pptr.nfilts,"LogEnergBand2 tras PLP");
VectorImprimir("jlpc.dep",nframes,trastero->spfilt[nframes],trastero->pptr.nfilts,"LogEnergBand tras rasta");
VectorImprimir("jlpc.dep",nframes,paramet->mfc[0][nframes],trastero->_melNum,"parrasta");
}
if (paramet->n_codeBooks > 1)
{
__CalculaDelta_trama (paramet, nframes-DELTA,trastero2);
if (nframes>=DELTA)
VectorImprimir("jlpc.dep",nframes-DELTA,paramet->mfc[1][nframes-DELTA],trastero->_melNum,"delta parrasta");
}
//falta un factor 2 PI? parece que no
return total;
}
void create_accelobs(accelobs * obs, infodata * idata, Cmdline * cmd, int usemmap)
{
int ii, rootlen, input_shorts = 0;
{
int hassuffix = 0;
char *suffix;
hassuffix = split_root_suffix(cmd->argv[0], &(obs->rootfilenm), &suffix);
if (hassuffix) {
if (strcmp(suffix, "fft") != 0 &&
strcmp(suffix, "dat") != 0 && strcmp(suffix, "sdat") != 0) {
printf("\nInput file ('%s') must be an '.fft' or '.[s]dat' file!\n\n",
cmd->argv[0]);
free(suffix);
exit(0);
}
/* If the input file is a time series */
if (strcmp(suffix, "dat") == 0 || strcmp(suffix, "sdat") == 0) {
obs->dat_input = 1;
obs->mmap_file = 0;
if (strcmp(suffix, "sdat") == 0)
input_shorts = 1;
} else {
obs->dat_input = 0;
}
free(suffix);
} else {
printf("\nInput file ('%s') must be an '.fft' or '.[s]dat' file!\n\n",
cmd->argv[0]);
exit(0);
}
}
if (cmd->noharmpolishP)
obs->use_harmonic_polishing = 0;
else
obs->use_harmonic_polishing = 1; // now default
/* Read the info file */
readinf(idata, obs->rootfilenm);
if (idata->object) {
printf("Analyzing %s data from '%s'.\n\n",
remove_whitespace(idata->object), cmd->argv[0]);
} else {
printf("Analyzing data from '%s'.\n\n", cmd->argv[0]);
}
/* Prepare the input time series if required */
if (obs->dat_input) {
FILE *datfile;
long long filelen;
float *ftmp;
printf("Reading and FFTing the time series...");
fflush(NULL);
datfile = chkfopen(cmd->argv[0], "rb");
/* Check the length of the file to see if we can handle it */
filelen = chkfilelen(datfile, sizeof(float));
if (input_shorts)
filelen *= 2;
if (filelen > 67108864) { /* Small since we need memory for the templates */
printf("\nThe input time series is too large. Use 'realfft' first.\n\n");
exit(0);
}
/* Read the time series into a temporary buffer */
/* Note: The padding allows us to search very short time series */
/* using correlations without having to worry about */
/* accessing data before or after the valid FFT freqs. */
if (input_shorts) {
short *stmp = gen_svect(filelen);
ftmp = gen_fvect(filelen+2*ACCEL_PADDING);
for (ii = 0; ii < ACCEL_PADDING; ii++) {
ftmp[ii] = 0.0;
ftmp[ii+filelen+ACCEL_PADDING] = 0.0;
}
chkfread(stmp, sizeof(short), filelen, datfile);
for (ii = 0; ii < filelen; ii++)
ftmp[ii+ACCEL_PADDING] = (float) stmp[ii];
free(stmp);
} else {
ftmp = read_float_file(datfile, -ACCEL_PADDING, filelen+2*ACCEL_PADDING);
}
/* Now, offset the pointer so that we are pointing at the first */
/* bits of valid data. */
ftmp += ACCEL_PADDING;
fclose(datfile);
/* FFT it */
realfft(ftmp, filelen, -1);
obs->fftfile = NULL;
obs->fft = (fcomplex *) ftmp;
obs->numbins = filelen / 2;
printf("done.\n");
/* De-redden it */
printf("Removing red-noise...");
deredden(obs->fft, obs->numbins);
printf("done.\n\n");
}
/* Determine the output filenames */
rootlen = strlen(obs->rootfilenm) + 25;
obs->candnm = (char *) calloc(rootlen, 1);
obs->accelnm = (char *) calloc(rootlen, 1);
obs->workfilenm = (char *) calloc(rootlen, 1);
sprintf(obs->candnm, "%s_ACCEL_%d.cand", obs->rootfilenm, cmd->zmax);
sprintf(obs->accelnm, "%s_ACCEL_%d", obs->rootfilenm, cmd->zmax);
sprintf(obs->workfilenm, "%s_ACCEL_%d.txtcand", obs->rootfilenm, cmd->zmax);
/* Open the FFT file if it exists appropriately */
if (!obs->dat_input) {
obs->fftfile = chkfopen(cmd->argv[0], "rb");
obs->numbins = chkfilelen(obs->fftfile, sizeof(fcomplex));
if (usemmap) {
fclose(obs->fftfile);
obs->fftfile = NULL;
printf("Memory mapping the input FFT. This may take a while...\n");
obs->mmap_file = open(cmd->argv[0], O_RDONLY);
if (obs->mmap_file == -1) {
perror("\nError in open() in accel_utils.c");
printf("\n");
exit(-1);
}
obs->fft = (fcomplex *) mmap(0, sizeof(fcomplex) * obs->numbins, PROT_READ,
MAP_SHARED, obs->mmap_file, 0);
if (obs->fft == MAP_FAILED) {
perror("\nError in mmap() in accel_utils.c");
printf("Falling back to a non-mmaped approach\n");
obs->fftfile = chkfopen(cmd->argv[0], "rb");
obs->mmap_file = 0;
}
} else {
obs->mmap_file = 0;
}
}
/* Determine the other parameters */
if (cmd->zmax % ACCEL_DZ)
cmd->zmax = (cmd->zmax / ACCEL_DZ + 1) * ACCEL_DZ;
if (!obs->dat_input)
obs->workfile = chkfopen(obs->workfilenm, "w");
obs->N = (long long) idata->N;
if (cmd->photonP) {
if (obs->mmap_file || obs->dat_input) {
obs->nph = obs->fft[0].r;
} else {
obs->nph = get_numphotons(obs->fftfile);
}
printf("Normalizing powers using %.0f photons.\n\n", obs->nph);
} else {
obs->nph = 0.0;
/* For short FFTs insure that we don't pick up the DC */
/* or Nyquist component as part of the interpolation */
/* for higher frequencies. */
if (cmd->locpowP) {
obs->norm_type = 1;
printf("Normalizing powers using local-power determination.\n\n");
} else if (cmd->medianP) {
obs->norm_type = 0;
printf("Normalizing powers using median-blocks.\n\n");
} else {
obs->norm_type = 0;
printf("Normalizing powers using median-blocks (default).\n\n");
}
if (obs->dat_input) {
obs->fft[0].r = 1.0;
obs->fft[0].i = 1.0;
}
}
obs->lobin = cmd->lobin;
if (obs->lobin > 0) {
obs->nph = 0.0;
if (cmd->lobin > obs->numbins - 1) {
printf("\n'lobin' is greater than the total number of\n");
printf(" frequencies in the data set. Exiting.\n\n");
exit(1);
}
}
if (cmd->numharm != 1 &&
cmd->numharm != 2 &&
cmd->numharm != 4 && cmd->numharm != 8 && cmd->numharm != 16) {
printf("\n'numharm' = %d must be a power-of-two! Exiting\n\n", cmd->numharm);
exit(1);
}
obs->numharmstages = twon_to_index(cmd->numharm) + 1;
obs->dz = ACCEL_DZ;
obs->numz = cmd->zmax * 2 + 1;
obs->numbetween = ACCEL_NUMBETWEEN;
obs->dt = idata->dt;
obs->T = idata->dt * idata->N;
if (cmd->floP) {
obs->rlo = floor(cmd->flo * obs->T);
if (obs->rlo < obs->lobin)
obs->rlo = obs->lobin;
if (obs->rlo > obs->numbins - 1) {
printf("\nLow frequency to search 'flo' is greater than\n");
printf(" the highest available frequency. Exiting.\n\n");
exit(1);
}
} else {
if (cmd->rloP)
obs->rlo = cmd->rlo;
else
obs->rlo = 1.0;
if (obs->rlo < obs->lobin)
obs->rlo = obs->lobin;
if (obs->rlo > obs->numbins - 1) {
printf("\nLow frequency to search 'rlo' is greater than\n");
printf(" the available number of points. Exiting.\n\n");
exit(1);
}
}
obs->highestbin = obs->numbins - 1;
if (cmd->fhiP) {
obs->highestbin = ceil(cmd->fhi * obs->T);
if (obs->highestbin > obs->numbins - 1)
obs->highestbin = obs->numbins - 1;
obs->rhi = obs->highestbin;
if (obs->highestbin < obs->rlo) {
printf("\nHigh frequency to search 'fhi' is less than\n");
printf(" the lowest frequency to search 'flo'. Exiting.\n\n");
exit(1);
}
} else if (cmd->rhiP) {
obs->highestbin = cmd->rhi;
if (obs->highestbin > obs->numbins - 1)
obs->highestbin = obs->numbins - 1;
obs->rhi = obs->highestbin;
if (obs->highestbin < obs->rlo) {
printf("\nHigh frequency to search 'rhi' is less than\n");
printf(" the lowest frequency to search 'rlo'. Exiting.\n\n");
exit(1);
}
}
obs->dr = ACCEL_DR;
obs->zhi = cmd->zmax;
obs->zlo = -cmd->zmax;
obs->sigma = cmd->sigma;
obs->powcut = (float *) malloc(obs->numharmstages * sizeof(float));
obs->numindep = (long long *) malloc(obs->numharmstages * sizeof(long long));
for (ii = 0; ii < obs->numharmstages; ii++) {
if (obs->numz == 1)
obs->numindep[ii] = (obs->rhi - obs->rlo) / index_to_twon(ii);
else
/* The numz+1 takes care of the small amount of */
/* search we get above zmax and below zmin. */
obs->numindep[ii] = (obs->rhi - obs->rlo) * (obs->numz + 1) *
(obs->dz / 6.95) / index_to_twon(ii);
obs->powcut[ii] = power_for_sigma(obs->sigma,
index_to_twon(ii), obs->numindep[ii]);
}
obs->numzap = 0;
/*
if (zapfile!=NULL)
obs->numzap = get_birdies(cmd->zapfile, obs->T, obs->baryv,
&(obs->lobins), &(obs->hibins));
else
obs->numzap = 0;
*/
}
void output_fundamentals(fourierprops * props, GSList * list,
accelobs * obs, infodata * idata)
{
double accel = 0.0, accelerr = 0.0, coherent_pow;
int ii, jj, numcols = 12, numcands, *width, *error;
int widths[12] = { 4, 5, 6, 8, 4, 16, 15, 15, 15, 11, 15, 20 };
int errors[12] = { 0, 0, 0, 0, 0, 1, 1, 2, 1, 2, 2, 0 };
char tmpstr[30], ctrstr[30], *notes;
accelcand *cand;
GSList *listptr;
rzwerrs errs;
static char **title;
static char *titles1[] = { "", "", "Summed", "Coherent", "Num", "Period",
"Frequency", "FFT 'r'", "Freq Deriv", "FFT 'z'",
"Accel", ""
};
static char *titles2[] = { "Cand", "Sigma", "Power", "Power", "Harm", "(ms)",
"(Hz)", "(bin)", "(Hz/s)", "(bins)",
"(m/s^2)", "Notes"
};
numcands = g_slist_length(list);
listptr = list;
/* Close the old work file and open the cand file */
if (!obs->dat_input)
fclose(obs->workfile); /* Why is this here? -A */
obs->workfile = chkfopen(obs->accelnm, "w");
/* Set our candidate notes to all spaces */
notes = (char *) malloc(numcands * widths[numcols - 1]);
memset(notes, ' ', numcands * widths[numcols - 1]);
/* Compare the candidates with the pulsar database */
if (dms2rad(idata->ra_h, idata->ra_m, idata->ra_s) != 0.0 &&
hms2rad(idata->dec_d, idata->dec_m, idata->dec_s) != 0.0) {
for (ii = 0; ii < numcands; ii++) {
comp_psr_to_cand(props + ii, idata, notes + ii * 20, 0);
}
}
/* Compare the candidates with themselves */
compare_rzw_cands(props, numcands, notes);
/* Print the header */
width = widths;
title = titles1;
for (ii = 0; ii < numcols - 1; ii++) {
center_string(ctrstr, *title++, *width++);
fprintf(obs->workfile, "%s ", ctrstr);
}
center_string(ctrstr, *title++, *width++);
fprintf(obs->workfile, "%s\n", ctrstr);
width = widths;
title = titles2;
for (ii = 0; ii < numcols - 1; ii++) {
center_string(ctrstr, *title++, *width++);
fprintf(obs->workfile, "%s ", ctrstr);
}
center_string(ctrstr, *title++, *width++);
fprintf(obs->workfile, "%s\n", ctrstr);
width = widths;
for (ii = 0; ii < numcols - 1; ii++) {
memset(tmpstr, '-', *width);
tmpstr[*width++] = '\0';
fprintf(obs->workfile, "%s--", tmpstr);
}
memset(tmpstr, '-', *width++);
tmpstr[widths[ii]] = '\0';
fprintf(obs->workfile, "%s\n", tmpstr);
/* Print the fundamentals */
for (ii = 0; ii < numcands; ii++) {
width = widths;
error = errors;
cand = (accelcand *) (listptr->data);
calc_rzwerrs(props + ii, obs->T, &errs);
{ /* Calculate the coherently summed power */
double coherent_r = 0.0, coherent_i = 0.0;
double phs0, phscorr, amp;
rderivs harm;
double ifft_peak;
/* These phase calculations assume the fundamental is best */
/* Better to irfft them and check the amplitude */
phs0 = cand->derivs[0].phs;
if (obs->use_new_coherent_power) {
float* profile;
double amp;
const int upsample=4;
profile = gen_fvect(cand->numharm*upsample*2);
for(jj=0;jj<cand->numharm*upsample*2;jj++)
profile[jj]=0;
for(jj=0; jj<cand->numharm; jj++) {
harm = cand->derivs[jj];
if (obs->nph > 0.0)
amp = sqrt(harm.pow / obs->nph);
else
amp = sqrt(harm.pow / harm.locpow);
phscorr = - fmod((jj + 1.0) * phs0, TWOPI);
profile[2*jj+2] = amp*cos(harm.phs+phscorr);
profile[2*jj+3] = amp*sin(harm.phs+phscorr);
}
realfft(profile, cand->numharm*upsample*2, 1);
ifft_peak = 0;
for(jj=0;jj<cand->numharm*upsample*2;jj++) {
if (profile[jj]>ifft_peak) {
ifft_peak = profile[jj];
}
}
ifft_peak *= cand->numharm*upsample;
coherent_pow = ifft_peak*ifft_peak;
free(profile);
} else {
/* These phase calculations assume the fundamental is best */
/* Better to irfft them and check the amplitude */
for (jj = 0; jj < cand->numharm; jj++) {
harm = cand->derivs[jj];
if (obs->nph > 0.0)
amp = sqrt(harm.pow / obs->nph);
else
amp = sqrt(harm.pow / harm.locpow);
phscorr = - fmod((jj + 1.0) * phs0, TWOPI);
coherent_r += amp * cos(harm.phs + phscorr);
coherent_i += amp * sin(harm.phs + phscorr);
}
coherent_pow = coherent_r * coherent_r + coherent_i * coherent_i;
}
}
sprintf(tmpstr, "%-4d", ii + 1);
center_string(ctrstr, tmpstr, *width++);
error++;
fprintf(obs->workfile, "%s ", ctrstr);
sprintf(tmpstr, "%.2f", cand->sigma);
center_string(ctrstr, tmpstr, *width++);
error++;
fprintf(obs->workfile, "%s ", ctrstr);
sprintf(tmpstr, "%.2f", cand->power);
center_string(ctrstr, tmpstr, *width++);
error++;
fprintf(obs->workfile, "%s ", ctrstr);
sprintf(tmpstr, "%.2f", coherent_pow);
center_string(ctrstr, tmpstr, *width++);
error++;
fprintf(obs->workfile, "%s ", ctrstr);
sprintf(tmpstr, "%d", cand->numharm);
center_string(ctrstr, tmpstr, *width++);
error++;
fprintf(obs->workfile, "%s ", ctrstr);
write_val_with_err(obs->workfile, errs.p * 1000.0, errs.perr * 1000.0,
*error++, *width++);
write_val_with_err(obs->workfile, errs.f, errs.ferr, *error++, *width++);
write_val_with_err(obs->workfile, props[ii].r, props[ii].rerr,
*error++, *width++);
write_val_with_err(obs->workfile, errs.fd, errs.fderr, *error++, *width++);
write_val_with_err(obs->workfile, props[ii].z, props[ii].zerr,
*error++, *width++);
accel = props[ii].z * SOL / (obs->T * obs->T * errs.f);
accelerr = props[ii].zerr * SOL / (obs->T * obs->T * errs.f);
write_val_with_err(obs->workfile, accel, accelerr, *error++, *width++);
fprintf(obs->workfile, " %.20s\n", notes + ii * 20);
fflush(obs->workfile);
listptr = listptr->next;
}
fprintf(obs->workfile, "\n\n");
free(notes);
}