int disp_fileinfo(char *file, int n1, int n2, float f1, float f2, float d1, float d2, segy *hdrs)
{
vmess("file %s contains", file);
vmess("*** n1 = %d n2 = %d", n1, n2);
vmess("*** d1 = %.5f d2 = %.5f", d1, d2);
vmess("*** f1 = %.5f f2 = %.5f", f1, f2);
vmess("*** fldr = %d sx = %d", hdrs[0].fldr, hdrs[0].sx);
return 0;
}
void homogeneousg(float *HomG, complex *cshot, complex *Refl, int nx, int nt, int nxs, int nts, float dt, float *xsyn, int Nsyn, float *xrcv, float *xsrc, float fxs2, float fxs, float dxs, float dxsrc, float dx, int ixa, int ixb, int ntfft, int nw, int nw_low, int nw_high, int mode, int reci, int nshots, int *ixpossyn, int npossyn, float *pmin, float *f1min, float *f1plus, float *f2p, float *G_d, int *muteW, int smooth, int shift, int above, int pad, int nt0, int *synpos, int verbose)
{
int i, j, l, ret;
int iter, niter, ix, nfreq;
float *iRN, *rtrace;
complex *Fop, *ctrace, *chom;
double t0, t2, tfft;
tfft = 0.0;
ret = 0;
t0 = wallclock_time();
nfreq = ntfft/2+1;
#pragma omp parallel default(shared) \
private(i,j,ctrace,chom,rtrace)
{
ctrace = (complex *)calloc(nfreq,sizeof(complex));
chom = (complex *)calloc(nfreq,sizeof(complex));
rtrace = (float *)calloc(ntfft,sizeof(float));
#pragma omp for
for (l = 0; l < Nsyn; l++) {
if (verbose > 2) vmess("Creating Homogeneous G at location %d out of %d",l+1,Nsyn);
/* Construct the image */
for (i = 0; i < nxs; i++) {
rc1fft(&f2p[l*nxs*ntfft+i*ntfft],ctrace,nt,-1);
for (j = 0; j < nfreq; j++) {
chom[j].r += 2*(ctrace[j].r*cshot[i*nfreq+j].r - ctrace[j].i*cshot[i*nfreq+j].i);
}
}
cr1fft(&chom[0],rtrace,nt,1);
for (i = 0; i < ntfft; i++) {
HomG[i*Nsyn+synpos[l]] = rtrace[i];
}
/*for (i = 0; i < ntfft/2; i++) {
HomG[i*Nsyn+synpos[l]] = rtrace[ntfft/2+i];
}
for (i = ntfft/2; i < ntfft; i++) {
HomG[i*Nsyn+synpos[l]] = rtrace[i-ntfft/2];
}*/
}
free(rtrace);free(chom);free(ctrace);
}
//free(Gmin);
t2 = wallclock_time();
if (verbose) {
vmess("Total Homogeneous G time = %.3f", t2-t0);
}
return;
}
/* SaveError() takes printf style args and saves the result in LastError */
static void
SaveError(pTHXo_ char* pat, ...)
{
va_list args;
SV *msv;
char *message;
STRLEN len;
/* This code is based on croak/warn, see mess() in util.c */
va_start(args, pat);
msv = vmess(pat, &args);
va_end(args);
message = SvPV(msv,len);
len++; /* include terminating null char */
/* Allocate some memory for the error message */
if (LastError)
LastError = (char*)saferealloc(LastError, len) ;
else
LastError = (char *) safemalloc(len) ;
/* Copy message into LastError (including terminating null char) */
strncpy(LastError, message, len) ;
DLDEBUG(2,PerlIO_printf(Perl_debug_log, "DynaLoader: stored error msg '%s'\n",LastError));
}
static void array_define_yrange(t_glist *x, t_floatarg ylo, t_floatarg yhi)
{
t_glist *gl = (x->gl_list ? pd_checkglist(&x->gl_list->g_pd) : 0);
if (gl && gl->gl_list && pd_class(&gl->gl_list->g_pd) == garray_class)
{
int n = garray_getarray((t_garray *)gl->gl_list)->a_n;
vmess(&x->gl_list->g_pd, gensym("bounds"),
"ffff", 0., yhi, (double)(n == 1 ? n : n-1), ylo);
vmess(&x->gl_list->g_pd, gensym("xlabel"),
"fff", ylo + glist_pixelstoy(gl, 2) - glist_pixelstoy(gl, 0),
0., (float)(n-1));
vmess(&x->gl_list->g_pd, gensym("ylabel"),
"fff", glist_pixelstox(gl, 0) - glist_pixelstox(gl, 5), ylo, yhi);
}
else bug("array_define_yrange");
}
void threadAffinity(void)
{
int thread;
cpu_set_t coremask;
char clbuf[7 * CPU_SETSIZE], hnbuf[64];
char prefix[200];
memset(clbuf, 0, sizeof(clbuf));
memset(hnbuf, 0, sizeof(hnbuf));
(void)gethostname(hnbuf, sizeof(hnbuf));
strcpy(prefix,"Hello world from");
// #pragma omp parallel private(thread, coremask, clbuf)
/* for use inside parallel region */
#pragma omp critical
{
#ifdef _OPENMP
thread = omp_get_thread_num();
#else
thread = 1;
#endif
(void)sched_getaffinity(0, sizeof(coremask), &coremask);
cpuset_to_cstr(&coremask, clbuf);
vmess("%s thread %d, on %s. (core affinity = %s)", prefix, thread, hnbuf, clbuf);
}
return;
}
/* SaveError() takes printf style args and saves the result in dl_last_error */
static void
SaveError(pTHX_ char* pat, ...)
{
dMY_CXT;
va_list args;
SV *msv;
char *message;
STRLEN len;
/* This code is based on croak/warn, see mess() in util.c */
va_start(args, pat);
msv = vmess(pat, &args);
va_end(args);
message = SvPV(msv,len);
len++; /* include terminating null char */
/* Copy message into dl_last_error (including terminating null char) */
sv_setpvn(MY_CXT.x_dl_last_error, message, len) ;
DLDEBUG(2,PerlIO_printf(Perl_debug_log, "DynaLoader: stored error msg '%s'\n",dl_last_error));
}
int main (int argc, char **argv)
{
FILE *fp_out, *fp_f1plus, *fp_f1min;
FILE *fp_gmin, *fp_gplus, *fp_f2, *fp_pmin;
int i, j, l, ret, nshots, Nsyn, nt, nx, nts, nxs, ngath;
int size, n1, n2, ntap, tap, di, ntraces, nb, ib;
int nw, nw_low, nw_high, nfreq, *xnx, *xnxsyn, *synpos;
int reci, mode, ixa, ixb, n2out, verbose, ntfft;
int iter, niter, niterh, tracf, *muteW, pad, nt0, ampest, *hmuteW, *hxnxsyn;
int hw, smooth, above, shift, *ixpossyn, npossyn, ix, first=1;
float fmin, fmax, *tapersh, *tapersy, fxf, dxf, fxs2, *xsrc, *xrcv, *zsyn, *zsrc, *xrcvsyn;
float *hzsyn, *hxsyn, *hxrcvsyn, *hG_d, xloc, zloc, *HomG;
double t0, t1, t2, t3, tsyn, tread, tfft, tcopy, energyNi, *J;
float d1, d2, f1, f2, fxs, ft, fx, *xsyn, dxsrc, Q, f0, *Costdet;
float *green, *f2p, *pmin, *G_d, dt, dx, dxs, scl, mem, *Image, *Image2;
float *f1plus, *f1min, *iRN, *Ni, *trace, *Gmin, *Gplus, *Gm0;
float xmin, xmax, weight, tsq, *Gd, *amp, bstart, bend, db, *bdet, bp, b, bmin;
complex *Refl, *Fop, *cshot;
char *file_tinv, *file_shot, *file_green, *file_iter, *file_wav, *file_ray, *file_amp, *file_img, *file_cp, *file_rays, *file_amps;
char *file_f1plus, *file_f1min, *file_gmin, *file_gplus, *file_f2, *file_pmin, *wavtype, *wavtype2, *file_homg, *file_tinvs;
segy *hdrs_im, *hdrs_homg;
WavePar WP,WPs;
modPar mod;
recPar rec;
srcPar src;
shotPar shot;
rayPar ray;
initargs(argc, argv);
requestdoc(1);
tsyn = tread = tfft = tcopy = 0.0;
t0 = wallclock_time();
if (!getparstring("file_img", &file_img)) file_img = "img.su";
if (!getparstring("file_homg", &file_homg)) file_homg = NULL;
if (!getparstring("file_shot", &file_shot)) file_shot = NULL;
if (!getparstring("file_tinv", &file_tinv)) file_tinv = NULL;
if (!getparstring("file_tinvs", &file_tinvs)) file_tinvs = NULL;
if (!getparstring("file_f1plus", &file_f1plus)) file_f1plus = NULL;
if (!getparstring("file_f1min", &file_f1min)) file_f1min = NULL;
if (!getparstring("file_gplus", &file_gplus)) file_gplus = NULL;
if (!getparstring("file_gmin", &file_gmin)) file_gmin = NULL;
if (!getparstring("file_pplus", &file_f2)) file_f2 = NULL;
if (!getparstring("file_f2", &file_f2)) file_f2 = NULL;
if (!getparstring("file_pmin", &file_pmin)) file_pmin = NULL;
if (!getparstring("file_iter", &file_iter)) file_iter = NULL;
if (!getparstring("file_wav", &file_wav)) file_wav=NULL;
if (!getparstring("file_ray", &file_ray)) file_ray=NULL;
if (!getparstring("file_amp", &file_amp)) file_amp=NULL;
if (!getparstring("file_rays", &file_rays)) file_rays=NULL;
if (!getparstring("file_amps", &file_amps)) file_amps=NULL;
if (!getparstring("file_cp", &file_cp)) file_cp = NULL;
if (!getparint("verbose", &verbose)) verbose = 0;
if (file_tinv == NULL && file_shot == NULL)
verr("file_tinv and file_shot cannot be both input pipe");
if (!getparstring("file_green", &file_green)) {
if (verbose) vwarn("parameter file_green not found, assume pipe");
file_green = NULL;
}
if (!getparfloat("fmin", &fmin)) fmin = 0.0;
if (!getparfloat("fmax", &fmax)) fmax = 70.0;
if (!getparint("ixa", &ixa)) ixa = 0;
if (!getparint("ixb", &ixb)) ixb = ixa;
// if (!getparint("reci", &reci)) reci = 0;
reci=0; // source-receiver reciprocity is not yet fully build into the code
if (!getparfloat("weight", &weight)) weight = 1.0;
if (!getparfloat("tsq", &tsq)) tsq = 0.0;
if (!getparfloat("Q", &Q)) Q = 0.0;
if (!getparfloat("f0", &f0)) f0 = 0.0;
if (!getparint("tap", &tap)) tap = 0;
if (!getparint("ntap", &ntap)) ntap = 0;
if (!getparint("pad", &pad)) pad = 0;
if(!getparint("hw", &hw)) hw = 15;
if(!getparint("smooth", &smooth)) smooth = 5;
if(!getparint("above", &above)) above = 0;
if(!getparint("shift", &shift)) shift=12;
if(!getparint("ampest", &est)) ampest=0;
if(!getparint("nb", &nb)) nb=0;
if (!getparfloat("bstart", &bstart)) bstart = 1.0;
if (!getparfloat("bend", &bend)) bend = 1.0;
if (reci && ntap) vwarn("tapering influences the reciprocal result");
/* Reading in wavelet parameters */
if(!getparfloat("fpw", &WP.fp)) WP.fp = -1.0;
if(!getparfloat("fminw", &WP.fmin)) WP.fmin = 10.0;
if(!getparfloat("flefw", &WP.flef)) WP.flef = 20.0;
if(!getparfloat("frigw", &WP.frig)) WP.frig = 50.0;
if(!getparfloat("fmaxw", &WP.fmax)) WP.fmax = 60.0;
else WP.fp = -1;
if(!getparfloat("dbw", &WP.db)) WP.db = -20.0;
if(!getparfloat("t0w", &WP.t0)) WP.t0 = 0.0;
if(!getparint("shiftw", &WP.shift)) WP.shift = 0;
if(!getparint("invw", &WP.inv)) WP.inv = 0;
if(!getparfloat("epsw", &WP.eps)) WP.eps = 1.0;
if(!getparfloat("scalew", &WP.scale)) WP.scale = 1.0;
if(!getparint("scfftw", &WP.scfft)) WP.scfft = 1;
if(!getparint("cmw", &WP.cm)) WP.cm = 10;
if(!getparint("cnw", &WP.cn)) WP.cn = 1;
if(!getparint("wav", &WP.wav)) WP.wav = 0;
if(!getparstring("file_wav", &WP.file_wav)) WP.file_wav=NULL;
if(!getparstring("w", &wavtype)) strcpy(WP.w, "g2");
else strcpy(WP.w, wavtype);
if(!getparfloat("fpws", &WPs.fp)) WPs.fp = -1.0;
if(!getparfloat("fminws", &WPs.fmin)) WPs.fmin = 10.0;
if(!getparfloat("flefws", &WPs.flef)) WPs.flef = 20.0;
if(!getparfloat("frigws", &WPs.frig)) WPs.frig = 50.0;
if(!getparfloat("fmaxws", &WPs.fmax)) WPs.fmax = 60.0;
else WPs.fp = -1;
if(!getparfloat("dbw", &WPs.db)) WPs.db = -20.0;
if(!getparfloat("t0ws", &WPs.t0)) WPs.t0 = 0.0;
if(!getparint("shiftws", &WPs.shift)) WPs.shift = 0;
if(!getparint("invws", &WPs.inv)) WPs.inv = 0;
if(!getparfloat("epsws", &WPs.eps)) WPs.eps = 1.0;
if(!getparfloat("scalews", &WPs.scale)) WPs.scale = 1.0;
if(!getparint("scfftws", &WPs.scfft)) WPs.scfft = 1;
if(!getparint("cmws", &WPs.cm)) WPs.cm = 10;
if(!getparint("cnws", &WPs.cn)) WPs.cn = 1;
if(!getparint("wavs", &WPs.wav)) WPs.wav = 0;
if(!getparstring("file_wavs", &WPs.file_wav)) WPs.file_wav=NULL;
if(!getparstring("ws", &wavtype2)) strcpy(WPs.w, "g2");
else strcpy(WPs.w, wavtype2);
if(!getparint("niter", &niter)) niter = 10;
if(!getparint("niterh", &niterh)) niterh = niter;
/*================ Reading info about shot and initial operator sizes ================*/
ngath = 0; /* setting ngath=0 scans all traces; n2 contains maximum traces/gather */
if (file_ray!=NULL && file_tinv==NULL) {
ret = getFileInfo(file_ray, &n2, &n1, &ngath, &d1, &d2, &f2, &f1, &xmin, &xmax, &scl, &ntraces);
n1 = 1;
ntraces = n2*ngath;
scl = 0.0010;
d1 = -1.0*xmin;
xmin = -1.0*xmax;
xmax = d1;
WP.wav = 1;
WP.xloc = -123456.0;
WP.zloc = -123456.0;
synpos = (int *)calloc(ngath,sizeof(int));
shot.nz = 1;
shot.nx = ngath;
shot.n = shot.nx*shot.nz;
for (l=0; l<shot.nz; l++) {
for (j=0; j<shot.nx; j++) {
synpos[l*shot.nx+j] = j*shot.nz+l;
}
}
}
else if (file_ray==NULL && file_tinv==NULL) {
getParameters(&mod, &rec, &src, &shot, &ray, verbose);
n1 = 1;
n2 = rec.n;
ngath = shot.n;
d1 = mod.dt;
d2 = (rec.x[1]-rec.x[0])*mod.dx;
f1 = 0.0;
f2 = mod.x0+rec.x[0]*mod.dx;
xmin = mod.x0+rec.x[0]*mod.dx;
xmax = mod.x0+rec.x[rec.n-1]*mod.dx;
scl = 0.0010;
ntraces = n2*ngath;
WP.wav = 1;
WP.xloc = -123456.0;
WP.zloc = -123456.0;
synpos = (int *)calloc(ngath,sizeof(int));
for (l=0; l<shot.nz; l++) {
for (j=0; j<shot.nx; j++) {
synpos[l*shot.nx+j] = j*shot.nz+l;
}
}
}
else {
ret = getFileInfo(file_tinv, &n1, &n2, &ngath, &d1, &d2, &f1, &f2, &xmin, &xmax, &scl, &ntraces);
}
Nsyn = ngath;
nxs = n2;
nts = n1;
nt0 = n1;
dxs = d2;
fxs = f2;
ngath = 0; /* setting ngath=0 scans all traces; nx contains maximum traces/gather */
ret = getFileInfo(file_shot, &nt, &nx, &ngath, &d1, &dx, &ft, &fx, &xmin, &xmax, &scl, &ntraces);
nshots = ngath;
assert (nxs >= nshots);
if (!getparfloat("dt", &dt)) dt = d1;
ntfft = optncr(MAX(nt+pad, nts+pad));
nfreq = ntfft/2+1;
nw_low = (int)MIN((fmin*ntfft*dt), nfreq-1);
nw_low = MAX(nw_low, 1);
nw_high = MIN((int)(fmax*ntfft*dt), nfreq-1);
nw = nw_high - nw_low + 1;
scl = 1.0/((float)ntfft);
if (nb > 1) {
db = (bend-bstart)/((float)(nb-1));
}
else if (nb == 1) {
db = 0;
bend = bstart;
}
/*================ Allocating all data arrays ================*/
green = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
f2p = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
pmin = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
f1plus = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
f1min = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
G_d = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
muteW = (int *)calloc(Nsyn*nxs,sizeof(int));
trace = (float *)malloc(ntfft*sizeof(float));
ixpossyn = (int *)malloc(nxs*sizeof(int));
xrcvsyn = (float *)calloc(Nsyn*nxs,sizeof(float));
xsyn = (float *)malloc(Nsyn*sizeof(float));
zsyn = (float *)malloc(Nsyn*sizeof(float));
xnxsyn = (int *)calloc(Nsyn,sizeof(int));
tapersy = (float *)malloc(nxs*sizeof(float));
Refl = (complex *)malloc(nw*nx*nshots*sizeof(complex));
tapersh = (float *)malloc(nx*sizeof(float));
xsrc = (float *)calloc(nshots,sizeof(float));
zsrc = (float *)calloc(nshots,sizeof(float));
xrcv = (float *)calloc(nshots*nx,sizeof(float));
xnx = (int *)calloc(nshots,sizeof(int));
/*================ Read and define mute window based on focusing operator(s) ================*/
/* G_d = p_0^+ = G_d (-t) ~ Tinv */
WPs.nt = ntfft;
WPs.dt = dt;
WP.nt = ntfft;
WP.dt = dt;
if (file_ray!=NULL || file_cp!=NULL) {
makeWindow(WP, file_ray, file_amp, dt, xrcvsyn, xsyn, zsyn, xnxsyn,
Nsyn, nxs, ntfft, mode, muteW, G_d, hw, verbose);
}
else {
mode=-1; /* apply complex conjugate to read in data */
readTinvData(file_tinv, dt, xrcvsyn, xsyn, zsyn, xnxsyn,
Nsyn, nxs, ntfft, mode, muteW, G_d, hw, verbose);
}
/* reading data added zero's to the number of time samples to be the same as ntfft */
nts = ntfft;
/* define tapers to taper edges of acquisition */
if (tap == 1 || tap == 3) {
for (j = 0; j < ntap; j++)
tapersy[j] = (cos(PI*(j-ntap)/ntap)+1)/2.0;
for (j = ntap; j < nxs-ntap; j++)
tapersy[j] = 1.0;
for (j = nxs-ntap; j < nxs; j++)
tapersy[j] =(cos(PI*(j-(nxs-ntap))/ntap)+1)/2.0;
}
else {
for (j = 0; j < nxs; j++) tapersy[j] = 1.0;
}
if (tap == 1 || tap == 3) {
if (verbose) vmess("Taper for operator applied ntap=%d", ntap);
for (l = 0; l < Nsyn; l++) {
for (i = 0; i < nxs; i++) {
for (j = 0; j < nts; j++) {
G_d[l*nxs*nts+i*nts+j] *= tapersy[i];
}
}
}
}
/* check consistency of header values */
dxf = (xrcvsyn[nxs-1] - xrcvsyn[0])/(float)(nxs-1);
if (NINT(dxs*1e3) != NINT(fabs(dxf)*1e3)) {
vmess("dx in hdr.d1 (%.3f) and hdr.gx (%.3f) not equal",d2, dxf);
if (dxf != 0) dxs = fabs(dxf);
vmess("dx in operator => %f", dxs);
}
if (xrcvsyn[0] != 0 || xrcvsyn[1] != 0 ) fxs = xrcvsyn[0];
fxs2 = fxs + (float)(nxs-1)*dxs;
/*================ Reading shot records ================*/
mode=1;
readShotData(file_shot, xrcv, xsrc, zsrc, xnx, Refl, nw, nw_low, ngath, nx, nx, ntfft,
mode, weight, tsq, Q, f0, verbose);
tapersh = (float *)malloc(nx*sizeof(float));
if (tap == 2 || tap == 3) {
for (j = 0; j < ntap; j++)
tapersh[j] = (cos(PI*(j-ntap)/ntap)+1)/2.0;
for (j = ntap; j < nx-ntap; j++)
tapersh[j] = 1.0;
for (j = nx-ntap; j < nx; j++)
tapersh[j] =(cos(PI*(j-(nx-ntap))/ntap)+1)/2.0;
}
else {
for (j = 0; j < nx; j++) tapersh[j] = 1.0;
}
if (tap == 2 || tap == 3) {
if (verbose) vmess("Taper for shots applied ntap=%d", ntap);
for (l = 0; l < nshots; l++) {
for (j = 1; j < nw; j++) {
for (i = 0; i < nx; i++) {
Refl[l*nx*nw+j*nx+i].r *= tapersh[i];
Refl[l*nx*nw+j*nx+i].i *= tapersh[i];
}
}
}
}
free(tapersh);
/* check consistency of header values */
fxf = xsrc[0];
if (nx > 1) dxf = (xrcv[0] - xrcv[nx-1])/(float)(nx-1);
else dxf = d2;
if (NINT(dx*1e3) != NINT(fabs(dxf)*1e3)) {
vmess("dx in hdr.d1 (%.3f) and hdr.gx (%.3f) not equal",dx, dxf);
if (dxf != 0) dx = fabs(dxf);
else verr("gx hdrs not set");
vmess("dx used => %f", dx);
}
dxsrc = (float)xsrc[1] - xsrc[0];
if (dxsrc == 0) {
vwarn("sx hdrs are not filled in!!");
dxsrc = dx;
}
/*================ Check the size of the files ================*/
if (NINT(dxsrc/dx)*dx != NINT(dxsrc)) {
vwarn("source (%.2f) and receiver step (%.2f) don't match",dxsrc,dx);
if (reci == 2) vwarn("step used from operator (%.2f) ",dxs);
}
di = NINT(dxf/dxs);
if ((NINT(di*dxs) != NINT(dxf)) && verbose)
vwarn("dx in receiver (%.2f) and operator (%.2f) don't match",dx,dxs);
if (nt != nts)
vmess("Time samples in shot (%d) and focusing operator (%d) are not equal",nt, nts);
if (verbose) {
vmess("Number of focusing operators = %d", Nsyn);
vmess("Number of receivers in focusop = %d", nxs);
vmess("number of shots = %d", nshots);
vmess("number of receiver/shot = %d", nx);
vmess("first model position = %.2f", fxs);
vmess("last model position = %.2f", fxs2);
vmess("first source position fxf = %.2f", fxf);
vmess("source distance dxsrc = %.2f", dxsrc);
vmess("last source position = %.2f", fxf+(nshots-1)*dxsrc);
vmess("receiver distance dxf = %.2f", dxf);
vmess("direction of increasing traces = %d", di);
vmess("number of time samples (nt,nts) = %d (%d,%d)", ntfft, nt, nts);
vmess("time sampling = %e ", dt);
if (ampest > 0) vmess("Amplitude correction estimation is switched on");
if (nb > 0) vmess("Scaling estimation in %d step(s) from %.3f to %.3f (db=%.3f)",nb,bstart,bend,db);
if (file_green != NULL) vmess("Green output file = %s ", file_green);
if (file_gmin != NULL) vmess("Gmin output file = %s ", file_gmin);
if (file_gplus != NULL) vmess("Gplus output file = %s ", file_gplus);
if (file_pmin != NULL) vmess("Pmin output file = %s ", file_pmin);
if (file_f2 != NULL) vmess("f2 (=pplus) output file = %s ", file_f2);
if (file_f1min != NULL) vmess("f1min output file = %s ", file_f1min);
if (file_f1plus != NULL)vmess("f1plus output file = %s ", file_f1plus);
if (file_iter != NULL) vmess("Iterations output file = %s ", file_iter);
}
/*================ initializations ================*/
if (ixa || ixb) n2out = ixa + ixb + 1;
else if (reci) n2out = nxs;
else n2out = nshots;
mem = Nsyn*n2out*ntfft*sizeof(float)/1048576.0;
if (verbose) {
vmess("number of output traces = %d", n2out);
vmess("number of output samples = %d", ntfft);
vmess("Size of output data/file = %.1f MB", mem);
}
//memcpy(Ni, G_d, Nsyn*nxs*ntfft*sizeof(float));
if (file_homg!=NULL) {
hG_d = (float *)calloc(nxs*ntfft,sizeof(float));
hmuteW = (int *)calloc(nxs,sizeof(int));
hxrcvsyn = (float *)calloc(nxs,sizeof(float));
hxsyn = (float *)calloc(1,sizeof(float));
hzsyn = (float *)calloc(1,sizeof(float));
hxnxsyn = (int *)calloc(1,sizeof(int));
cshot = (complex *)calloc(nxs*nfreq,sizeof(complex));
if(!getparfloat("xloc", &WPs.xloc)) WPs.xloc = -123456.0;
if(!getparfloat("zloc", &WPs.zloc)) WPs.zloc = -123456.0;
if (WPs.xloc == -123456.0 && WPs.zloc == -123456.0) file_cp = NULL;
if (WPs.xloc == -123456.0) WPs.xloc = 0.0;
if (WPs.zloc == -123456.0) WPs.zloc = 0.0;
xloc = WPs.xloc;
zloc = WPs.zloc;
ngath = 1;
if (file_rays!=NULL || file_cp!=NULL) {
WPs.wav=1;
makeWindow(WPs, file_rays, file_amps, dt, hxrcvsyn, hxsyn, hzsyn, hxnxsyn, ngath, nxs, ntfft, mode, hmuteW, hG_d, hw, verbose);
}
else {
mode=-1; /* apply complex conjugate to read in data */
readTinvData(file_tinvs, dt, hxrcvsyn, hxsyn, hzsyn, hxnxsyn,
ngath, nxs, ntfft, mode, hmuteW, hG_d, hw, verbose);
}
WPs.xloc = -123456.0;
WPs.zloc = -123456.0;
if (tap == 1 || tap == 3) {
if (verbose) vmess("Taper for operator applied ntap=%d", ntap);
for (i = 0; i < nxs; i++) {
for (j = 0; j < nts; j++) {
hG_d[i*nts+j] *= tapersy[i];
}
}
}
ngath = omp_get_max_threads();
synthesisPosistions(nx, nt, nxs, nts, dt, hxsyn, 1, xrcv, xsrc, fxs2, fxs,
dxs, dxsrc, dx, ixa, ixb, reci, nshots, ixpossyn, &npossyn, verbose);
iterations(Refl,nx,nt,nxs,nts,dt,hxsyn,1,xrcv,xsrc,fxs2,fxs,dxs,dxsrc,dx,ixa,ixb,
ntfft,nw,nw_low,nw_high,mode,reci,nshots,ixpossyn,npossyn,pmin,f1min,f1plus,
f2p,hG_d,hmuteW,smooth,shift,above,pad,nt0,&first,niterh,verbose);
/* compute full Green's function G = int R * f2(t) + f2(-t) = Pplus + Pmin */
for (i = 0; i < npossyn; i++) {
j = 0;
/* set green to zero if mute-window exceeds nt/2 */
if (hmuteW[ixpossyn[i]] >= nts/2) {
memset(&green[i*nts],0, sizeof(float)*nt);
continue;
}
green[i*nts+j] = f2p[i*nts+j] + pmin[i*nts+j];
for (j = 1; j < nts; j++) {
green[i*nts+j] = f2p[i*nts+nts-j] + pmin[i*nts+j];
}
}
applyMute(green, hmuteW, smooth, 4, 1, nxs, nts, ixpossyn, npossyn, shift, pad, nt0);
omp_set_num_threads(ngath);
/* Transform the green position to the frequency domain */
/*for (i = 0; i < npossyn; i++) {
rc1fft(&green[i*nts],&cshot[i*nfreq],ntfft,-1);
}*/
//free(hG_d);free(hmuteW);free(hxrcvsyn);
free(hmuteW);free(hxrcvsyn);
free(hxsyn);free(hzsyn);free(hxnxsyn);free(cshot);
}
/* dry-run of synthesis to get all x-positions calcalated by the integration */
synthesisPosistions(nx, nt, nxs, nts, dt, xsyn, Nsyn, xrcv, xsrc, fxs2, fxs,
dxs, dxsrc, dx, ixa, ixb, reci, nshots, ixpossyn, &npossyn, verbose);
if (verbose) {
vmess("synthesisPosistions: nshots=%d npossyn=%d", nshots, npossyn);
}
t1 = wallclock_time();
tread = t1-t0;
iterations(Refl,nx,nt,nxs,nts,dt,xsyn,Nsyn,xrcv,xsrc,fxs2,fxs,dxs,dxsrc,dx,ixa,ixb,
ntfft,nw,nw_low,nw_high,mode,reci,nshots,ixpossyn,npossyn,pmin,f1min,f1plus,
f2p,G_d,muteW,smooth,shift,above,pad,nt0,&first,niter,verbose);
/*if (niter==0) {
for (l = 0; l < Nsyn; l++) {
for (i = 0; i < npossyn; i++) {
j = 0;
ix = ixpossyn[i];
f2p[l*nxs*nts+i*nts+j] = G_d[l*nxs*nts+ix*nts+j];
f1plus[l*nxs*nts+i*nts+j] = G_d[l*nxs*nts+ix*nts+j];
for (j = 1; j < nts; j++) {
f2p[l*nxs*nts+i*nts+j] = G_d[l*nxs*nts+ix*nts+j];
f1plus[l*nxs*nts+i*nts+j] = G_d[l*nxs*nts+ix*nts+j];
}
}
}
}*/
if (niterh==0) {
for (l = 0; l < Nsyn; l++) {
for (i = 0; i < npossyn; i++) {
j = 0;
ix = ixpossyn[i];
green[i*nts+j] = hG_d[ix*nts+j];
for (j = 1; j < nts; j++) {
green[i*nts+j] = hG_d[ix*nts+nts-j];
}
}
}
}
if (file_img!=NULL) {
/*================ set variables for output data ================*/
hdrs_im = (segy *) calloc(shot.nx,sizeof(segy));
if (hdrs_im == NULL) verr("allocation for hdrs_out");
Image = (float *)calloc(Nsyn,sizeof(float));
first=0;
imaging(Image,WPs,Refl,nx,nt,nxs,nts,dt,xsyn,Nsyn,xrcv,xsrc,fxs2,fxs,dxs,dxsrc,dx,ixa,ixb,
ntfft,nw,nw_low,nw_high,mode,reci,nshots,ixpossyn,npossyn,pmin,f1min,f1plus,
f2p,G_d,muteW,smooth,shift,above,pad,nt0,synpos,verbose);
/*============= write output files ================*/
fp_out = fopen(file_img, "w+");
for (i = 0; i < shot.nx; i++) {
hdrs_im[i].fldr = 1;
hdrs_im[i].tracl = 1;
hdrs_im[i].tracf = i+1;
hdrs_im[i].scalco = -1000;
hdrs_im[i].scalel = -1000;
hdrs_im[i].sdepth = 0;
hdrs_im[i].trid = 1;
hdrs_im[i].ns = shot.nz;
hdrs_im[i].trwf = shot.nx;
hdrs_im[i].ntr = hdrs_im[i].fldr*hdrs_im[i].trwf;
hdrs_im[i].f1 = zsyn[0];
hdrs_im[i].f2 = xsyn[0];
hdrs_im[i].dt = dt*(1E6);
hdrs_im[i].d1 = (float)zsyn[shot.nx]-zsyn[0];
hdrs_im[i].d2 = (float)xsyn[1]-xsyn[0];
hdrs_im[i].sx = (int)roundf(xsyn[0] + (i*hdrs_im[i].d2));
hdrs_im[i].gx = (int)roundf(xsyn[0] + (i*hdrs_im[i].d2));
hdrs_im[i].offset = (hdrs_im[i].gx - hdrs_im[i].sx)/1000.0;
}
ret = writeData(fp_out, &Image[0], hdrs_im, shot.nz, shot.nx);
if (ret < 0 ) verr("error on writing output file.");
fclose(fp_out);
}
if (file_homg!=NULL) {
/*================ set variables for output data ================*/
hdrs_homg = (segy *) calloc(shot.nx,sizeof(segy));
if (hdrs_homg == NULL) verr("allocation for hdrs_out");
HomG = (float *)calloc(Nsyn*ntfft,sizeof(float));
homogeneousg(HomG,green,Refl,nx,nt,nxs,nts,dt,xsyn,Nsyn,xrcv,xsrc,fxs2,fxs,dxs,dxsrc,dx,ixa,ixb,
ntfft,nw,nw_low,nw_high,mode,reci,nshots,ixpossyn,npossyn,pmin,f1min,f1plus,
f2p,G_d,muteW,smooth,shift,above,pad,nt0,synpos,verbose);
/*============= write output files ================*/
fp_out = fopen(file_homg, "w+");
for (j = 0; j < ntfft; j++) {
for (i = 0; i < shot.nx; i++) {
hdrs_homg[i].fldr = j+1;
hdrs_homg[i].tracl = j*shot.nx+i+1;
hdrs_homg[i].tracf = i+1;
hdrs_homg[i].scalco = -1000;
hdrs_homg[i].scalel = -1000;
hdrs_homg[i].sdepth = (int)(zloc*1000.0);
hdrs_homg[i].trid = 1;
hdrs_homg[i].ns = shot.nz;
hdrs_homg[i].trwf = shot.nx;
hdrs_homg[i].ntr = hdrs_homg[i].fldr*hdrs_homg[i].trwf;
hdrs_homg[i].f1 = zsyn[0];
hdrs_homg[i].f2 = xsyn[0];
hdrs_homg[i].dt = dt*(1E6);
hdrs_homg[i].d1 = (float)zsyn[shot.nx]-zsyn[0];
hdrs_homg[i].d2 = (float)xsyn[1]-xsyn[0];
hdrs_homg[i].sx = (int)roundf(xsyn[0] + (i*hdrs_homg[i].d2));
hdrs_homg[i].gx = (int)roundf(xsyn[0] + (i*hdrs_homg[i].d2));
hdrs_homg[i].offset = (hdrs_homg[i].gx - hdrs_homg[i].sx)/1000.0;
}
ret = writeData(fp_out, &HomG[j*shot.n], hdrs_homg, shot.nz, shot.nx);
if (ret < 0 ) verr("error on writing output file.");
}
fclose(fp_out);
}
if (verbose) {
t1 = wallclock_time();
vmess("and CPU-time write data = %.3f", t1-t2);
}
free(tapersy);
exit(0);
}
void synthesis(complex *Refl, complex *Fop, float *Top, float *iRN, int nx, int nt, int nxs, int nts, float dt, float *xsyn, int
Nfoc, float *xrcv, float *xsrc, int *xnx, float fxse, float fxsb, float dxs, float dxsrc, float dx, int ntfft, int
nw, int nw_low, int nw_high, int mode, int reci, int nshots, int *ixpos, int npos, double *tfft, int *isxcount, int
*reci_xsrc, int *reci_xrcv, float *ixmask, int verbose)
{
int nfreq, size, inx;
float scl;
int i, j, l, m, iw, ix, k, ixsrc, il, ik;
float *rtrace, idxs;
complex *sum, *ctrace;
int npe;
static int first=1, *ixrcv;
static double t0, t1, t;
size = nxs*nts;
nfreq = ntfft/2+1;
/* scale factor 1/N for backward FFT,
* scale dt for correlation/convolution along time,
* scale dx (or dxsrc) for integration over receiver (or shot) coordinates */
scl = 1.0*dt/((float)ntfft);
#ifdef _OPENMP
npe = omp_get_max_threads();
/* parallelisation is over number of shot positions (nshots) */
if (npe > nshots) {
vmess("Number of OpenMP threads set to %d (was %d)", nshots, npe);
omp_set_num_threads(nshots);
}
#endif
t0 = wallclock_time();
/* reset output data to zero */
memset(&iRN[0], 0, Nfoc*nxs*nts*sizeof(float));
ctrace = (complex *)calloc(ntfft,sizeof(complex));
/* this first check is done to support an acquisition geometry that has more receiver than source
* postions. In the first iteration the int R(x_r,x_s) Fop(x_r) d x_r results in a grid on x_s.
* so for the next interations onlt x_s traces have to be computed on Fop */
if (!first) {
/* transform muted Ni (Top) to frequency domain, input for next iteration */
for (l = 0; l < Nfoc; l++) {
/* set Fop to zero, so new operator can be defined within ixpos points */
memset(&Fop[l*nxs*nw].r, 0, nxs*nw*2*sizeof(float));
for (i = 0; i < npos; i++) {
rc1fft(&Top[l*size+i*nts],ctrace,ntfft,-1);
ix = ixpos[i];
for (iw=0; iw<nw; iw++) {
Fop[l*nxs*nw+iw*nxs+ix].r = ctrace[nw_low+iw].r;
Fop[l*nxs*nw+iw*nxs+ix].i = mode*ctrace[nw_low+iw].i;
}
}
}
}
else { /* only for first call to synthesis using all nxs traces in G_d */
/* transform G_d to frequency domain, over all nxs traces */
first=0;
for (l = 0; l < Nfoc; l++) {
/* set Fop to zero, so new operator can be defined within all ix points */
memset(&Fop[l*nxs*nw].r, 0, nxs*nw*2*sizeof(float));
for (i = 0; i < nxs; i++) {
rc1fft(&Top[l*size+i*nts],ctrace,ntfft,-1);
for (iw=0; iw<nw; iw++) {
Fop[l*nxs*nw+iw*nxs+i].r = ctrace[nw_low+iw].r;
Fop[l*nxs*nw+iw*nxs+i].i = mode*ctrace[nw_low+iw].i;
}
}
}
idxs = 1.0/dxs;
ixrcv = (int *)malloc(nshots*nx*sizeof(int));
for (k=0; k<nshots; k++) {
for (i = 0; i < nx; i++) {
ixrcv[k*nx+i] = NINT((xrcv[k*nx+i]-fxsb)*idxs);
}
}
}
free(ctrace);
t1 = wallclock_time();
*tfft += t1 - t0;
if (reci == 0 || reci == 1) {
/*================ SYNTHESIS ================*/
#pragma omp parallel default(none) \
shared(iRN, dx, npe, nw, verbose, nshots, xnx) \
shared(Refl, Nfoc, reci, xsrc, xsyn, fxsb, fxse, nxs, dxs) \
shared(nx, dxsrc, nfreq, nw_low, nw_high) \
shared(Fop, size, nts, ntfft, scl, ixrcv) \
private(l, ix, j, m, i, sum, rtrace, k, ixsrc, inx)
{ /* start of parallel region */
sum = (complex *)malloc(nfreq*sizeof(complex));
rtrace = (float *)calloc(ntfft,sizeof(float));
/* Loop over total number of shots */
#pragma omp for schedule(guided,1)
for (k=0; k<nshots; k++) {
if ((xsrc[k] < 0.999*fxsb) || (xsrc[k] > 1.001*fxse)) continue;
ixsrc = NINT((xsrc[k] - fxsb)/dxs);
inx = xnx[k]; /* number of traces per shot */
for (l = 0; l < Nfoc; l++) {
/* compute integral over receiver positions */
/* multiply R with Fop and sum over nx */
memset(&sum[0].r,0,nfreq*2*sizeof(float));
for (j = nw_low, m = 0; j <= nw_high; j++, m++) {
for (i = 0; i < inx; i++) {
ix = ixrcv[k*nx+i];
sum[j].r += Refl[k*nw*nx+m*nx+i].r*Fop[l*nw*nxs+m*nxs+ix].r -
Refl[k*nw*nx+m*nx+i].i*Fop[l*nw*nxs+m*nxs+ix].i;
sum[j].i += Refl[k*nw*nx+m*nx+i].i*Fop[l*nw*nxs+m*nxs+ix].r +
Refl[k*nw*nx+m*nx+i].r*Fop[l*nw*nxs+m*nxs+ix].i;
}
}
/* transfrom result back to time domain */
cr1fft(sum, rtrace, ntfft, 1);
/* place result at source position ixsrc; dx = receiver distance */
for (j = 0; j < nts; j++)
iRN[l*size+ixsrc*nts+j] += rtrace[j]*scl*dx;
} /* end of parallel Nfoc loop */
if (verbose>4) vmess("*** Shot gather %d processed ***", k);
} /* end of nshots (k) loop */
free(sum);
free(rtrace);
} /* end of parallel region */
} /* end of if reci */
/* if reciprocal traces are enabled start a new loop over reciprocal shot positions */
if (reci != 0) {
#pragma omp parallel default(none) \
shared(iRN, dx, nw, verbose) \
shared(Refl, Nfoc, reci, xsrc, xsyn, fxsb, fxse, nxs, dxs) \
shared(nx, dxsrc, nfreq, nw_low, nw_high) \
shared(reci_xrcv, reci_xsrc, ixmask, isxcount) \
shared(Fop, size, nts, ntfft, scl, ixrcv) \
private(l, ix, j, m, i, k, sum, rtrace, ik, il, ixsrc, inx)
{ /* start of parallel region */
sum = (complex *)malloc(nfreq*sizeof(complex));
rtrace = (float *)calloc(ntfft,sizeof(float));
#pragma omp for schedule(guided,1)
for (k=0; k<nxs; k++) {
if (isxcount[k] == 0) continue;
ixsrc = k;
inx = isxcount[ixsrc]; /* number of traces per reciprocal shot */
for (l = 0; l < Nfoc; l++) {
/* compute integral over (reciprocal) source positions */
/* multiply R with Fop and sum over nx */
memset(&sum[0].r,0,nfreq*2*sizeof(float));
for (j = nw_low, m = 0; j <= nw_high; j++, m++) {
for (i = 0; i < inx; i++) {
il = reci_xrcv[ixsrc*nxs+i];
ik = reci_xsrc[ixsrc*nxs+i];
ix = NINT((xsrc[il] - fxsb)/dxs);
sum[j].r += Refl[il*nw*nx+m*nx+ik].r*Fop[l*nw*nxs+m*nxs+ix].r -
Refl[il*nw*nx+m*nx+ik].i*Fop[l*nw*nxs+m*nxs+ix].i;
sum[j].i += Refl[il*nw*nx+m*nx+ik].i*Fop[l*nw*nxs+m*nxs+ix].r +
Refl[il*nw*nx+m*nx+ik].r*Fop[l*nw*nxs+m*nxs+ix].i;
}
}
/* transfrom result back to time domain */
cr1fft(sum, rtrace, ntfft, 1);
/* place result at source position ixsrc; dxsrc = shot distance */
for (j = 0; j < nts; j++)
iRN[l*size+ixsrc*nts+j] = ixmask[ixsrc]*(iRN[l*size+ixsrc*nts+j]+rtrace[j]*scl*dxsrc);
} /* end of Nfoc loop */
} /* end of parallel reciprocal shots (k) loop */
free(sum);
free(rtrace);
} /* end of parallel region */
} /* end of if reci */
t = wallclock_time() - t0;
if (verbose>2) {
vmess("OMP: parallel region = %f seconds (%d threads)", t, npe);
}
return;
}
void synthesisPositions(int nx, int nt, int nxs, int nts, float dt, float *xsyn, int Nfoc, float *xrcv, float *xsrc, int *xnx,
float fxse, float fxsb, float dxs, float dxsrc, float dx, int nshots, int *ixpos, int *npos, int *isxcount, int countmin, int reci, int verbose)
{
int i, j, l, ixsrc, ixrcv, dosrc, k, *count;
float x0, x1;
count = (int *)calloc(nxs,sizeof(int)); // number of traces that contribute to the integration over x
/*================ SYNTHESIS ================*/
/* assuming all focal operators cover the same lateral area */
*npos=0;
if (reci == 0 || reci == 1) {
for (k=0; k<nshots; k++) {
ixsrc = NINT((xsrc[k] - fxsb)/dxs);
if (verbose>=3) {
vmess("source position: %.2f in operator %d", xsrc[k], ixsrc);
vmess("receiver positions: %.2f <--> %.2f", xrcv[k*nx+0], xrcv[k*nx+nx-1]);
vmess("focal point positions: %.2f <--> %.2f", fxsb, fxse);
}
if ((NINT(xsrc[k]-fxse) > 0) || (NINT(xrcv[k*nx+nx-1]-fxse) > 0) ||
(NINT(xrcv[k*nx+nx-1]-fxsb) < 0) || (NINT(xsrc[k]-fxsb) < 0) ||
(NINT(xrcv[k*nx+0]-fxsb) < 0) || (NINT(xrcv[k*nx+0]-fxse) > 0) ) {
vwarn("source/receiver positions are outside synthesis aperture");
vmess("xsrc = %.2f xrcv_1 = %.2f xrvc_N = %.2f", xsrc[k], xrcv[k*nx+0], xrcv[k*nx+nx-1]);
vmess("source position: %.2f in operator %d", xsrc[k], ixsrc);
vmess("receiver positions: %.2f <--> %.2f", xrcv[k*nx+0], xrcv[k*nx+nx-1]);
vmess("focal point positions: %.2f <--> %.2f", fxsb, fxse);
}
//fprintf(stderr,"k=%d xsrc[k]=%f 0.999*fxsb=%f, 1.001*fxse=%f %f %f\n",k, xsrc[k], 0.999*fxsb, 1.001*fxse, fxsb, fxse);
//if ( (xsrc[k] >= 0.999*fxsb) && (xsrc[k] <= 1.001*fxse) ) {
if ( (ixsrc < nxs) && (ixsrc >= 0) ) {
j = linearsearch(ixpos, *npos, ixsrc);
if (j < *npos) { /* the position (at j) is already included */
count[j] += xnx[k];
}
else { /* add new postion */
ixpos[*npos]=ixsrc;
count[*npos] += xnx[k];
*npos += 1;
}
if (verbose>=3) {
vmess("source position %d is inside synthesis model %f *npos=%d count=%d", k, xsrc[k], *npos, count[*npos]);
vmess("ixpos[%d] = %d ixsrc=%d", *npos-1, ixpos[*npos-1], ixsrc);
}
}
else {
if (verbose>=2) {
vwarn("source position %d is outside synthesis model %f ixsrc=%d", k, xsrc[k], ixsrc);
}
}
} /* end of nshots (k) loop */
} /* end of reci branch */
/* if reci=1 or reci=2 source-receive reciprocity is used and new (reciprocal-)sources are added */
if (reci != 0) {
for (k=0; k<nxs; k++) { /* check count in total number of shots added by reciprocity */
if (isxcount[k] >= countmin) {
j = linearsearch(ixpos, *npos, k);
if (j < *npos) { /* the position (at j) is already included */
count[j] += isxcount[k];
}
else { /* add new postion */
ixpos[*npos]=k;
count[*npos] += isxcount[k];
*npos += 1;
}
}
else {
isxcount[k] = 0;
}
}
} /* end of reci branch */
if (verbose>=4) {
for (j=0; j < *npos; j++) {
vmess("ixpos[%d] = %d count=%d", j, ixpos[j], count[j]);
}
}
free(count);
/* sort ixpos into increasing values */
qsort(ixpos, *npos, sizeof(int), compareInt);
return;
}
void synthesisPositions3D(int nx, int ny, int nxs, int nys, int Nfoc, float *xrcv, float *yrcv,
float *xsrc, float *ysrc, int *xnx, float fxse, float fyse, float fxsb, float fysb, float dxs, float dys,
int nshots, int nxsrc, int nysrc, int *ixpos, int *npos, int reci, int verbose)
{
int j, l, ixsrc, iysrc, isrc, k, *count, nxy;
float fxb, fxe, fyb, fye;
if (fxsb < 0) fxb = 1.001*fxsb;
else fxb = 0.999*fxsb;
if (fysb < 0) fyb = 1.001*fysb;
else fyb = 0.999*fysb;
if (fxse > 0) fxe = 1.001*fxse;
else fxe = 0.999*fxse;
if (fyse > 0) fye = 1.001*fyse;
else fye = 0.999*fyse;
nxy = nx*ny;
count = (int *)calloc(nxs*nys,sizeof(int)); // number of traces that contribute to the integration over x
/*================ SYNTHESIS ================*/
for (l = 0; l < 1; l++) { /* assuming all focal operators cover the same lateral area */
// for (l = 0; l < Nfoc; l++) {
*npos=0;
if (reci == 0 || reci == 1) {
for (k=0; k<nshots; k++) {
ixsrc = NINT((xsrc[k] - fxsb)/dxs);
iysrc = NINT((ysrc[k] - fysb)/dys);
isrc = iysrc*nxs + ixsrc;
if (verbose>=3) {
vmess("source position: x=%.2f y=%.2f in operator x=%d y=%d pos=%d", xsrc[k], ysrc[k], ixsrc, iysrc, isrc);
vmess("receiver positions: x:%.2f <--> %.2f y:%.2f <--> %.2f", xrcv[k*nxy+0], xrcv[k*nxy+nxy-1], yrcv[k*nxy+0], yrcv[k*nxy+nxy-1]);
vmess("focal point positions: x:%.2f <--> %.2f y:%.2f <--> %.2f", fxsb, fxse, fysb, fyse);
}
if ((NINT(xsrc[k]-fxse) > 0) || (NINT(xrcv[k*nxy+nxy-1]-fxse) > 0) ||
(NINT(xrcv[k*nxy+nxy-1]-fxsb) < 0) || (NINT(xsrc[k]-fxsb) < 0) ||
(NINT(xrcv[k*nxy+0]-fxsb) < 0) || (NINT(xrcv[k*nxy+0]-fxse) > 0) ||
(NINT(ysrc[k]-fyse) > 0) || (NINT(yrcv[k*nxy+nxy-1]-fyse) > 0) ||
(NINT(yrcv[k*nxy+nxy-1]-fysb) < 0) || (NINT(ysrc[k]-fysb) < 0) ||
(NINT(yrcv[k*nxy+0]-fysb) < 0) || (NINT(yrcv[k*nxy+0]-fyse) > 0) ) {
vwarn("source/receiver positions are outside synthesis aperture");
vmess("xsrc = %.2f xrcv_1 = %.2f xrvc_N = %.2f", xsrc[k], xrcv[k*nxy+0], xrcv[k*nxy+nxy-1]);
vmess("ysrc = %.2f yrcv_1 = %.2f yrvc_N = %.2f", ysrc[k], yrcv[k*nxy+0], yrcv[k*nxy+nxy-1]);
vmess("source position x: %.2f in operator %d", xsrc[k], ixsrc);
vmess("source position y: %.2f in operator %d", ysrc[k], iysrc);
vmess("receiver positions x: %.2f <--> %.2f", xrcv[k*nxy+0], xrcv[k*nxy+nxy-1]);
vmess("receiver positions y: %.2f <--> %.2f", yrcv[k*nxy+0], yrcv[k*nxy+nxy-1]);
vmess("focal point positions x: %.2f <--> %.2f", fxsb, fxse);
vmess("focal point positions y: %.2f <--> %.2f", fysb, fyse);
}
if ( (xsrc[k] >= fxb) && (xsrc[k] <= fxe) &&
(ysrc[k] >= fyb) && (ysrc[k] <= fye) ) {
j = linearsearch(ixpos, *npos, isrc);
if (j < *npos) { /* the position (at j) is already included */
count[j] += xnx[k];
}
else { /* add new postion */
ixpos[*npos] = isrc;
count[*npos] += xnx[k];
*npos += 1;
}
// vmess("source position %d is inside synthesis model %f *npos=%d count=%d", k, xsrc[k], *npos, count[*npos]);
}
} /* end of nshots (k) loop */
} /* end of reci branch */
} /* end of Nfoc loop */
if (verbose>=4) {
for (j=0; j < *npos; j++) {
vmess("ixpos[%d] = %d count=%d", j, ixpos[j], count[j]);
}
}
free(count);
/* sort ixpos into increasing values */
qsort(ixpos, *npos, sizeof(int), compareInt);
return;
}
void kxwdecomp(complex *rp, complex *rvz, complex *up, complex *down,
int nkx, float dx, int nt, float dt, float fmin, float fmax,
float cp, float rho, int verbose)
{
int iom, iomin, iomax, ikx, nfreq, a, av;
float omin, omax, deltom, om, kp, df, dkx;
float alpha, eps, *angle, avrp, avrvz, maxrp, maxrvz;
float fangle, pangle, vangle, kangle;
complex *pu, w;
complex ax, az;
df = 1.0/((float)nt*dt);
dkx = 2.0*M_PI/(nkx*dx);
deltom = 2.*M_PI*df;
omin = 2.*M_PI*fmin;
omax = 2.*M_PI*fmax;
nfreq = nt/2+1;
eps = 0.01;
alpha = 0.1;
iomin = (int)MIN((omin/deltom), (nfreq-1));
iomin = MAX(iomin, 1);
iomax = MIN((int)(omax/deltom), (nfreq-1));
pu = (complex *)malloc(nkx*sizeof(complex));
angle = (float *)calloc(2*90,sizeof(float));
/* estimate maximum propagation angle in wavefields P and Vz */
for (a=1; a<90; a++) {
for (iom = iomin; iom <= iomax; iom++) {
om = iom*deltom;
ikx = MIN(NINT( ((om/cp)*sin(a*M_PI/180.0))/dkx ), nkx/2);
if (ikx < nkx/2 && ikx != 0) {
ax.r = rp[iom*nkx+ikx].r + rp[iom*nkx+nkx-1-ikx].r;
ax.i = rp[iom*nkx+ikx].i + rp[iom*nkx+nkx-1-ikx].i;
angle[a] += sqrt(ax.r*ax.r + ax.i*ax.i);
ax.r = rvz[iom*nkx+ikx].r + rvz[iom*nkx+nkx-1-ikx].r;
ax.i = rvz[iom*nkx+ikx].i + rvz[iom*nkx+nkx-1-ikx].i;
angle[90+a] += sqrt(ax.r*ax.r + ax.i*ax.i);
}
}
}
avrp =0.0;
avrvz =0.0;
maxrp =0.0;
maxrvz=0.0;
for (a=1; a<90; a++) {
avrp += angle[a];
maxrp = MAX(angle[a], maxrp);
avrvz += angle[90+a];
maxrvz = MAX(angle[90+a], maxrvz);
}
avrp = avrp/89.0;
avrvz = avrvz/89.0;
if (verbose>=4) {
writesufile("anglerp.su", angle, 90, 1, 0, 0, 1, 1);
writesufile("anglervz.su", &angle[90], 90, 1, 0, 0, 1, 1);
}
for (av=0; av<90; av++) {
if (angle[89-av] <= avrp) angle[89-av] = 0.0;
else {
pangle=1.0*(90-av);
break;
}
}
for (av=0; av<90; av++) {
if (angle[179-av] <= avrvz) angle[179-av] = 0.0;
else {
vangle=1.0*(90-av);
break;
}
}
if (verbose>=4) {
writesufile("anglerp0.su", angle, 90, 1, 0, 0, 1, 1);
writesufile("anglervz0.su", &angle[90], 90, 1, 0, 0, 1, 1);
}
fangle=pangle;
if (verbose>=2) vmess("Up-down going: P max=%e average=%e => angle at average %f", maxrp, avrp, pangle);
if (verbose>=2) vmess("Up-down going: Vz max=%e average=%e => angle at average %f", maxrvz, avrvz, vangle);
if (pangle >= 90 || pangle <= 1) { /* use angle in Vz data, P might be placed on free surface */
fangle = vangle;
}
if(!getparfloat("kangle",&kangle)) kangle=fangle;
if (verbose>=2) vmess("Up-down going: maximum angle in decomposition= %f", kangle);
for (iom = iomin; iom <= iomax; iom++) {
om = iom*deltom;
decud(om, rho, cp, dx, nkx, kangle, alpha, eps, pu);
/*
kxwfilter(dpux, kp, dx, nkx, alfa1, alfa2, perc);
kxwfilter(dpuz, kp, dx, nkx, alfa1, alfa2, perc);
*/
for (ikx = 0; ikx < nkx; ikx++) {
ax.r = 0.5*rp[iom*nkx+ikx].r;
ax.i = 0.5*rp[iom*nkx+ikx].i;
az.r = 0.5*(rvz[iom*nkx+ikx].r*pu[ikx].r - rvz[iom*nkx+ikx].i*pu[ikx].i);
az.i = 0.5*(rvz[iom*nkx+ikx].i*pu[ikx].r + rvz[iom*nkx+ikx].r*pu[ikx].i);
down[iom*nkx+ikx].r = ax.r + az.r;
down[iom*nkx+ikx].i = ax.i + az.i;
up[iom*nkx+ikx].r = ax.r - az.r;
up[iom*nkx+ikx].i = ax.i - az.i;
}
}
free(pu);
free(angle);
return;
}
void synthesis(complex *Refl, complex *Fop, float *Top, float *iRN, int nx, int nt, int nxs, int nts, float dt, float *xsyn, int Nsyn, float *xrcv, float *xsrc, float fxs2, float fxs, float dxs, float dxsrc, float dx, int ixa, int ixb, int ntfft, int nw, int nw_low, int nw_high, int mode, int reci, int nshots, int *ixpossyn, int npossyn, double *tfft, int *first, int verbose)
{
int nfreq, size, iox, inx;
float scl;
int i, j, l, m, iw, ix, k;
float *rtrace, idxs;
complex *sum, *ctrace;
int npe;
static int *ixrcv;
static double t0, t1, t;
size = nxs*nts;
nfreq = ntfft/2+1;
/* scale factor 1/N for backward FFT,
* scale dt for correlation/convolution along time,
* scale dx (or dxsrc) for integration over receiver (or shot) coordinates */
scl = 1.0*dt/((float)ntfft);
#ifdef _OPENMP
npe = omp_get_max_threads();
/* parallelisation is over number of virtual source positions (Nsyn) */
if (npe > Nsyn) {
vmess("Number of OpenMP threads set to %d (was %d)", Nsyn, npe);
omp_set_num_threads(Nsyn);
}
#endif
t0 = wallclock_time();
/* reset output data to zero */
memset(&iRN[0], 0, Nsyn*nxs*nts*sizeof(float));
idxs = 1.0/dxs;
if (ixrcv == NULL) {
ixrcv = (int *)malloc(nshots*nx*sizeof(int));
}
for (k=0; k<nshots; k++) {
for (i = 0; i < nx; i++) {
ixrcv[k*nx+i] = NINT((xrcv[k*nx+i]-fxs)*idxs);
}
}
ctrace = (complex *)calloc(ntfft,sizeof(complex));
if (!*first) {
/* transform muted Ni (Top) to frequency domain, input for next iteration */
for (l = 0; l < Nsyn; l++) {
/* set Fop to zero, so new operator can be defined within ixpossyn points */
//memset(&Fop[l*nxs*nw].r, 0, nxs*nw*2*sizeof(float));
bzero(&Fop[l*nxs*nw].r, nxs*nw*2*sizeof(float));
for (i = 0; i < npossyn; i++) {
rc1fft(&Top[l*size+i*nts],ctrace,ntfft,-1);
ix = ixpossyn[i];
for (iw=0; iw<nw; iw++) {
Fop[l*nxs*nw+iw*nxs+ix].r = ctrace[nw_low+iw].r;
Fop[l*nxs*nw+iw*nxs+ix].i = mode*ctrace[nw_low+iw].i;
}
}
}
}
else { /* only for first call to synthesis */
/* transform G_d to frequency domain, over all nxs traces */
*first=0;
for (l = 0; l < Nsyn; l++) {
/* set Fop to zero, so new operator can be defined within all ix points */
//memset(&Fop[l*nxs*nw].r, 0, nxs*nw*2*sizeof(float));
bzero(&Fop[l*nxs*nw].r, nxs*nw*2*sizeof(float));
for (i = 0; i < nxs; i++) {
rc1fft(&Top[l*size+i*nts],ctrace,ntfft,-1);
for (iw=0; iw<nw; iw++) {
Fop[l*nxs*nw+iw*nxs+i].r = ctrace[nw_low+iw].r;
Fop[l*nxs*nw+iw*nxs+i].i = mode*ctrace[nw_low+iw].i;
}
}
}
}
free(ctrace);
t1 = wallclock_time();
*tfft += t1 - t0;
for (k=0; k<nshots; k++) {
/* if (verbose>=3) {
vmess("source position: %.2f ixpossyn=%d", xsrc[k], ixpossyn[k]);
vmess("receiver positions: %.2f <--> %.2f", xrcv[k*nx+0], xrcv[k*nx+nx-1]);
}
*/
if ((NINT(xsrc[k]-fxs2) > 0) || (NINT(xrcv[k*nx+nx-1]-fxs2) > 0) ||
(NINT(xrcv[k*nx+nx-1]-fxs) < 0) || (NINT(xsrc[k]-fxs) < 0) ||
(NINT(xrcv[k*nx+0]-fxs) < 0) || (NINT(xrcv[k*nx+0]-fxs2) > 0) ) {
vwarn("source/receiver positions are outside synthesis model");
vwarn("integration calculation is stopped at gather %d", k);
vmess("xsrc = %.2f xrcv_1 = %.2f xrvc_N = %.2f", xsrc[k], xrcv[k*nx+0], xrcv[k*nx+nx-1]);
break;
}
iox = 0; inx = nx;
/*================ SYNTHESIS ================*/
#pragma omp parallel default(none) \
shared(iRN, dx, npe, nw, verbose) \
shared(Refl, Nsyn, reci, xrcv, xsrc, xsyn, fxs, nxs, dxs) \
shared(nx, ixa, ixb, dxsrc, iox, inx, k, nfreq, nw_low, nw_high) \
shared(Fop, size, nts, ntfft, scl, ixrcv, stderr) \
private(l, ix, j, m, i, sum, rtrace)
{ /* start of parallel region */
sum = (complex *)malloc(nfreq*sizeof(complex));
rtrace = (float *)calloc(ntfft,sizeof(float));
#pragma omp for schedule(guided,1)
for (l = 0; l < Nsyn; l++) {
ix = k;
/* multiply R with Fop and sum over nx */
memset(&sum[0].r,0,nfreq*2*sizeof(float));
//for (j = 0; j < nfreq; j++) sum[j].r = sum[j].i = 0.0;
for (j = nw_low, m = 0; j <= nw_high; j++, m++) {
for (i = iox; i < inx; i++) {
sum[j].r += Refl[k*nw*nx+m*nx+i].r*Fop[l*nw*nxs+m*nxs+ixrcv[k*nx+i]].r -
Refl[k*nw*nx+m*nx+i].i*Fop[l*nw*nxs+m*nxs+ixrcv[k*nx+i]].i;
sum[j].i += Refl[k*nw*nx+m*nx+i].i*Fop[l*nw*nxs+m*nxs+ixrcv[k*nx+i]].r +
Refl[k*nw*nx+m*nx+i].r*Fop[l*nw*nxs+m*nxs+ixrcv[k*nx+i]].i;
}
}
/* transfrom result back to time domain */
cr1fft(sum, rtrace, ntfft, 1);
/* dx = receiver distance */
for (j = 0; j < nts; j++)
iRN[l*size+ix*nts+j] += rtrace[j]*scl*dx;
} /* end of parallel Nsyn loop */
free(sum);
free(rtrace);
#pragma omp single
{
#ifdef _OPENMP
npe = omp_get_num_threads();
#endif
}
} /* end of parallel region */
if (verbose>3) vmess("*** Shot gather %d processed ***", k);
} /* end of nshots (k) loop */
t = wallclock_time() - t0;
if (verbose) {
vmess("OMP: parallel region = %f seconds (%d threads)", t, npe);
}
return;
}
int writeRec(recPar rec, modPar mod, bndPar bnd, wavPar wav, int ixsrc, int izsrc, int nsam, int ishot, int fileno,
float *rec_vx, float *rec_vz, float *rec_txx, float *rec_tzz, float *rec_txz,
float *rec_p, float *rec_pp, float *rec_ss, float *rec_udp, float *rec_udvz, int verbose)
{
FILE *fpvx, *fpvz, *fptxx, *fptzz, *fptxz, *fpp, *fppp, *fpss, *fpup, *fpdown;
float *rec_up, *rec_down, *trace, *rec_vze, *rec_pe;
float dx, dt, cp, rho, fmin, fmax;
complex *crec_vz, *crec_p, *crec_up, *crec_dw;
int irec, ntfft, nfreq, nkx, xorig, ix, iz, it, ibndx;
int append;
double ddt;
char number[16], filename[1024];
segy hdr;
if (!rec.n) return 0;
if (ishot) append=1;
else append=0;
/* if the total number of samples exceeds rec_ntsam then a new (numbered) file is opened */
/* fileno has a non-zero value (from fdelmodc.c) if the number of samples exceeds rec_ntsam. */
strcpy(filename, rec.file_rcv);
if (fileno) {
sprintf(number,"_%03d",fileno);
name_ext(filename, number);
}
if (verbose>2) vmess("Writing receiver data to file %s", filename);
if (nsam != rec.nt && verbose) vmess("Number of samples written to last file = %d",nsam);
memset(&hdr,0,TRCBYTES);
ddt = (double)mod.dt;/* to avoid rounding in 32 bit precision */
dt = (float)ddt*rec.skipdt;
dx = (rec.x[1]-rec.x[0])*mod.dx;
hdr.dt = (unsigned short)lround((((double)1.0e6*ddt*rec.skipdt)));
hdr.scalco = -1000;
hdr.scalel = -1000;
hdr.sx = 1000*(mod.x0+ixsrc*mod.dx);
hdr.sdepth = 1000*(mod.z0+izsrc*mod.dz);
hdr.selev = (int)(-1000.0*(mod.z0+izsrc*mod.dz));
hdr.fldr = ishot+1;
hdr.trid = 1;
hdr.ns = nsam;
hdr.trwf = rec.n;
hdr.ntr = (ishot+1)*rec.n;
hdr.f1 = 0.0;
hdr.d1 = mod.dt*rec.skipdt;
hdr.d2 = (rec.x[1]-rec.x[0])*mod.dx;
hdr.f2 = mod.x0+rec.x[0]*mod.dx;
if (rec.type.vx) fpvx = fileOpen(filename, "_rvx", append);
if (rec.type.vz) fpvz = fileOpen(filename, "_rvz", append);
if (rec.type.p) fpp = fileOpen(filename, "_rp", append);
if (rec.type.txx) fptxx = fileOpen(filename, "_rtxx", append);
if (rec.type.tzz) fptzz = fileOpen(filename, "_rtzz", append);
if (rec.type.txz) fptxz = fileOpen(filename, "_rtxz", append);
if (rec.type.pp) fppp = fileOpen(filename, "_rpp", append);
if (rec.type.ss) fpss = fileOpen(filename, "_rss", append);
/* decomposed wavefield */
if (rec.type.ud && (mod.ischeme==1 || mod.ischeme==2) ) {
fpup = fileOpen(filename, "_ru", append);
fpdown = fileOpen(filename, "_rd", append);
ntfft = optncr(nsam);
nfreq = ntfft/2+1;
fmin = 0.0;
fmax = wav.fmax;
nkx = optncc(2*mod.nax);
ibndx = mod.ioPx;
if (bnd.lef==4 || bnd.lef==2) ibndx += bnd.ntap;
cp = rec.cp;
rho = rec.rho;
if (verbose) vmess("Decomposition array at z=%.2f with cp=%.2f rho=%.2f", rec.zr[0]+mod.z0, cp, rho);
rec_up = (float *)calloc(ntfft*nkx,sizeof(float));
rec_down= (float *)calloc(ntfft*nkx,sizeof(float));
crec_vz = (complex *)malloc(nfreq*nkx*sizeof(complex));
crec_p = (complex *)malloc(nfreq*nkx*sizeof(complex));
crec_up = (complex *)malloc(nfreq*nkx*sizeof(complex));
crec_dw = (complex *)malloc(nfreq*nkx*sizeof(complex));
rec_vze = rec_up;
rec_pe = rec_down;
/* copy input data into extended arrays with padded zeroes */
for (ix=0; ix<mod.nax; ix++) {
memcpy(&rec_vze[ix*ntfft],&rec_udvz[ix*rec.nt],nsam*sizeof(float));
memcpy(&rec_pe[ix*ntfft], &rec_udp[ix*rec.nt], nsam*sizeof(float));
}
/* transform from t-x to kx-w */
xorig = ixsrc+ibndx;
xt2wkx(rec_vze, crec_vz, ntfft, nkx, ntfft, nkx, xorig);
xt2wkx(rec_pe, crec_p, ntfft, nkx, ntfft, nkx, xorig);
/* apply decomposition operators */
kxwdecomp(crec_p, crec_vz, crec_up, crec_dw,
nkx, mod.dx, nsam, dt, fmin, fmax, cp, rho, verbose);
/* transform back to t-x */
wkx2xt(crec_up, rec_up, ntfft, nkx, nkx, ntfft, xorig);
wkx2xt(crec_dw, rec_down, ntfft, nkx, nkx, ntfft, xorig);
/* reduce array to rec.nt samples rec.n traces */
for (irec=0; irec<rec.n; irec++) {
ix = rec.x[irec]+ibndx;
for (it=0; it<rec.nt; it++) {
rec_up[irec*rec.nt+it] = rec_up[ix*ntfft+it];
rec_down[irec*rec.nt+it] = rec_down[ix*ntfft+it];
}
}
free(crec_vz);
free(crec_p);
free(crec_up);
free(crec_dw);
}
if (rec.type.ud && (mod.ischeme==3 || mod.ischeme==4) ) {
}
for (irec=0; irec<rec.n; irec++) {
hdr.tracf = irec+1;
hdr.tracl = ishot*rec.n+irec+1;
hdr.gx = 1000*(mod.x0+rec.x[irec]*mod.dx);
hdr.offset = (rec.x[irec]-ixsrc)*mod.dx;
hdr.gelev = (int)(-1000*(mod.z0+rec.z[irec]*mod.dz));
if (rec.type.vx) {
traceWrite( &hdr, &rec_vx[irec*rec.nt], nsam, fpvx) ;
}
if (rec.type.vz) {
traceWrite( &hdr, &rec_vz[irec*rec.nt], nsam, fpvz) ;
}
if (rec.type.p) {
traceWrite( &hdr, &rec_p[irec*rec.nt], nsam, fpp) ;
}
if (rec.type.txx) {
traceWrite( &hdr, &rec_txx[irec*rec.nt], nsam, fptxx) ;
}
if (rec.type.tzz) {
traceWrite( &hdr, &rec_tzz[irec*rec.nt], nsam, fptzz) ;
}
if (rec.type.txz) {
traceWrite( &hdr, &rec_txz[irec*rec.nt], nsam, fptxz) ;
}
if (rec.type.pp) {
traceWrite( &hdr, &rec_pp[irec*rec.nt], nsam, fppp) ;
}
if (rec.type.ss) {
traceWrite( &hdr, &rec_ss[irec*rec.nt], nsam, fpss) ;
}
if (rec.type.ud && mod.ischeme==1) {
traceWrite( &hdr, &rec_up[irec*rec.nt], nsam, fpup) ;
traceWrite( &hdr, &rec_down[irec*rec.nt], nsam, fpdown) ;
}
}
if (rec.type.vx) fclose(fpvx);
if (rec.type.vz) fclose(fpvz);
if (rec.type.p) fclose(fpp);
if (rec.type.txx) fclose(fptxx);
if (rec.type.tzz) fclose(fptzz);
if (rec.type.txz) fclose(fptxz);
if (rec.type.pp) fclose(fppp);
if (rec.type.ss) fclose(fpss);
if (rec.type.ud) {
fclose(fpup);
fclose(fpdown);
free(rec_up);
free(rec_down);
}
return 0;
}
int main (int argc, char **argv)
{
FILE *fp;
char *file_gp, *file_fp, *file_wav;
int nx, nt, ngath, ntraces, ret, size, nxwav;
int ntfft, nfreq, nxfft, nkx, i, j, n;
float dx, dt, fx, ft, xmin, xmax, scl, *den, dentmp;
float df, dw, dkx, eps, reps, leps, sclfk;
float *Gpd, *f1pd, *G_pad, *f_pad, *wav, *wav_pad, *outdata;
complex *G_w, *f_w, *Gf, *amp, *wav_w, *S, *ZS, *SS;
segy *hdr_gp, *hdr_fp, *hdr_wav, *hdr_out;
initargs(argc, argv);
requestdoc(1);
if(!getparstring("file_gp", &file_gp)) file_gp=NULL;
if (file_gp==NULL) verr("file %s does not exist",file_gp);
if(!getparstring("file_fp", &file_fp)) file_fp=NULL;
if (file_fp==NULL) verr("file %s does not exist",file_fp);
if(!getparstring("file_wav", &file_wav)) file_wav=NULL;
if (file_wav==NULL) verr("file %s does not exist",file_wav);
if(!getparfloat("eps", &eps)) eps=0.00;
if(!getparfloat("reps", &reps)) reps=0.01;
ngath = 1;
ret = getFileInfo(file_gp, &nt, &nx, &ngath, &dt, &dx, &ft, &fx, &xmin, &xmax, &scl, &ntraces);
size = nt*nx;
Gpd = (float *)malloc(size*sizeof(float));
hdr_gp = (segy *) calloc(nx,sizeof(segy));
fp = fopen(file_gp, "r");
if (fp == NULL) verr("error on opening input file_in1=%s", file_gp);
nx = readData(fp, Gpd, hdr_gp, nt);
fclose(fp);
f1pd = (float *)malloc(size*sizeof(float));
hdr_fp = (segy *) calloc(nx,sizeof(segy));
fp = fopen(file_fp, "r");
if (fp == NULL) verr("error on opening input file_in1=%s", file_fp);
nx = readData(fp, f1pd, hdr_fp, nt);
fclose(fp);
wav = (float *)malloc(nt*sizeof(float));
hdr_wav = (segy *) calloc(1,sizeof(segy));
fp = fopen(file_wav, "r");
if (fp == NULL) verr("error on opening input file_in1=%s", file_fp);
nxwav = readData(fp, wav, hdr_wav, nt);
fclose(fp);
/* Start the scaling */
ntfft = optncr(nt);
nfreq = ntfft/2+1;
df = 1.0/(ntfft*dt);
dw = 2.0*PI*df;
nkx = optncc(nx);
dkx = 2.0*PI/(nkx*dx);
sclfk = dt*(dt*dx)*(dt*dx);
vmess("ntfft:%d, nfreq:%d, nkx:%d dx:%.3f dt:%.3f",ntfft,nfreq,nkx,dx,dt);
/* Allocate the arrays */
G_pad = (float *)calloc(ntfft*nkx,sizeof(float));
if (G_pad == NULL) verr("memory allocation error for G_pad");
f_pad = (float *)calloc(ntfft*nkx,sizeof(float));
if (f_pad == NULL) verr("memory allocation error for f_pad");
wav_pad = (float *)calloc(ntfft,sizeof(float));
if (wav_pad == NULL) verr("memory allocation error for wav_pad");
G_w = (complex *)calloc(nfreq*nkx,sizeof(complex));
if (G_w == NULL) verr("memory allocation error for G_w");
f_w = (complex *)calloc(nfreq*nkx,sizeof(complex));
if (f_w == NULL) verr("memory allocation error for f_w");
Gf = (complex *)calloc(nfreq*nkx,sizeof(complex));
if (Gf == NULL) verr("memory allocation error for Gf");
wav_w = (complex *)calloc(nfreq*nkx,sizeof(complex));
if (wav_w == NULL) verr("memory allocation error for wav_w");
amp = (complex *)calloc(nfreq*nkx,sizeof(complex));
if (amp == NULL) verr("memory allocation error for amp");
S = (complex *)calloc(nfreq*nkx,sizeof(complex));
if (S == NULL) verr("memory allocation error for S");
ZS = (complex *)calloc(nfreq*nkx,sizeof(complex));
if (ZS == NULL) verr("memory allocation error for ZS");
SS = (complex *)calloc(nfreq*nkx,sizeof(complex));
if (SS == NULL) verr("memory allocation error for SS");
den = (float *)calloc(nfreq*nkx,sizeof(float));
if (den == NULL) verr("memory allocation error for den");
/* pad zeroes in 2 directions to reach FFT lengths */
pad2d_data(Gpd, nt,nx,ntfft,nkx,G_pad);
pad2d_data(f1pd,nt,nx,ntfft,nkx,f_pad);
pad_data( wav, nt, 1,ntfft, wav_pad);
/* double forward FFT */
xt2wkx(&G_pad[0], &G_w[0], ntfft, nkx, ntfft, nkx, 0);
xt2wkx(&f_pad[0], &f_w[0], ntfft, nkx, ntfft, nkx, 0);
rcmfft(&wav_pad[0], &Gf[0], ntfft, 1, ntfft, nfreq, -1);
for (i=0; i<nkx; i++) {
for (j=0; j<nfreq; j++) {
wav_w[j*nkx+i].r = Gf[j].r;
wav_w[j*nkx+i].i = Gf[j].i;
}
}
for (i = 0; i < nkx*nfreq; i++) {
Gf[i].r = (G_w[i].r*f_w[i].r - G_w[i].i*f_w[i].i);
Gf[i].i = (G_w[i].r*f_w[i].i + G_w[i].i*f_w[i].r);
S[i].r = (wav_w[i].r*wav_w[i].r + wav_w[i].i*wav_w[i].i);
S[i].i = (wav_w[i].r*wav_w[i].i - wav_w[i].i*wav_w[i].r);
ZS[i].r = (Gf[i].r*S[i].r + Gf[i].i*S[i].i);
ZS[i].i = (Gf[i].r*S[i].i - Gf[i].i*S[i].r);
SS[i].r = (S[i].r*S[i].r + S[i].i*S[i].i);
SS[i].i = (S[i].r*S[i].i - S[i].i*S[i].r);
if (i==0) dentmp=SS[i].r;
else dentmp=MAX(dentmp,SS[i].r);
}
leps = reps*dentmp+eps;
vmess("dentmp:%.4e leps:%.4e",dentmp,leps);
for (i = 0; i < nkx*nfreq; i++) {
S[i].r = (ZS[i].r*SS[i].r+ZS[i].i*SS[i].i)/(SS[i].r*SS[i].r+SS[i].i*SS[i].i+leps);
S[i].i = (ZS[i].i*SS[i].r-ZS[i].r*SS[i].i)/(SS[i].r*SS[i].r+SS[i].i*SS[i].i+leps);
amp[i].r = sqrtf(S[i].r*S[i].r+S[i].i*S[i].i);
amp[i].i = 0.0;
// complex_sqrt(&[i]);
if (isnan(amp[i].r)) amp[i].r = 0;
if (isnan(amp[i].i)) amp[i].i = 0;
if (isinf(amp[i].r)) amp[i].r = 0;
if (isinf(amp[i].i)) amp[i].i = 0;
Gf[i].r = (G_w[i].r*amp[i].r - G_w[i].i*amp[i].i);
Gf[i].i = (G_w[i].r*amp[i].i + G_w[i].i*amp[i].r);
}
// for (i=0; i<nfreq; i++) {
// for (j=0; j<nkx; j++) {
// Gpd[j*nfreq+i] = sqrtf(amp[i*nkx+j].r*amp[i*nkx+j].r+amp[i*nkx+j].i*amp[i*nkx+j].i);
// }
// }
// conv_small(G_w, amp, Gf, nkx, nfreq); // Scaled data
/* inverse double FFT */
wkx2xt(&Gf[0], &G_pad[0], ntfft, nkx, nkx, ntfft, 0);
/* select original samples and traces */
scl = (1.0)/(nkx*ntfft);
scl_data(G_pad,ntfft,nx,scl,Gpd ,nt);
fp = fopen("out.su", "w+");
ret = writeData(fp, Gpd, hdr_gp, nt, nx);
if (ret < 0 ) verr("error on writing output file.");
fclose(fp);
// fp = fopen("wav.su", "w+");
// for (j=0; j<nkx; j++) {
// hdr_gp[j].ns = nfreq;
// }
// ret = writeData(fp, Gpd, hdr_gp, nfreq, nkx);
// if (ret < 0 ) verr("error on writing output file.");
// fclose(fp);
free(f1pd);free(Gpd);free(hdr_gp);free(hdr_fp);
return 0;
}
void xwBeam(float *data, int nx, int nt, float dt, float *velmod, int ndepth, float fmin, float fmax, int opl, int ntap, int conjg, float *beams, int nxm, float ox, float dxm, float *xrcv, int verbose)
{
int iomin, iomax, iom, ix, d, hopl, hopl2, i, j, ixrcv;
int index1, nfreq, optn, lenx, i1, i2, hoplen;
float dom, om, c, cprev, df, scale, scl;
float *taper, *locbeam, *pdata;
complex *opx, *cdata, *tmp1, *tmp2, wa;
optn = optncr(nt);
nfreq = optn/2 + 1;
tmp1 = (complex *)calloc(nx*nfreq,sizeof(complex));
/* pad zero's to get fourier length */
if( nt != optn ) {
if (verbose >1) vmess("xwBeam: padding zeros to data from %d to %d",nt,optn);
pdata = (float *)calloc(optn*nx,sizeof(float));
for (i=0; i<nx; i++) {
for (j=0; j<nt; j++) pdata[i*optn+j] = data[i*nt+j];
for ( ; j<optn; j++) pdata[i*optn+j] = 0.0;
}
}
else {
pdata = &data[0];
}
xt2wx(pdata, tmp1, optn, nx, optn, nx);
if( nt != optn ) free(pdata);
if (conjg) scl = -1.0;
else scl = 1.0;
df = 1.0/(optn*dt);
dom = 2.*PI*df;
iomin = (int)MIN((fmin*dt*optn), (nfreq-1));
iomin = MAX(iomin, 1);
iomax = MIN((int)(fmax*dt*optn), (nfreq-1));
hopl = (opl+1)/2;
hopl2 = hopl-1;
lenx = 2*hopl2+nxm;
scale = 1.0/(float)(iomax-iomin+1);
/* plane wave correction (rotation) at the surface
for (iom = 0; iom < nfreq; iom++) {
for (ix = 0; ix < nx; ix++) {
xoff = -1500.0+ix*15.0;
shift = sin(15.0*M_PI/180)*xoff/2000.;
if (iom ==0 ) fprintf(stderr,"xoff = %f shift = %f \n",xoff, shift);
om = iom*dom*shift;
wa = cdata[iom*nx+ix];
cdata[iom*nx+ix].r = wa.r*cos(-om) - wa.i*sin(-om);
cdata[iom*nx+ix].i = wa.i*cos(-om) + wa.r*sin(-om);
}
}
*/
taper = (float *)malloc(nxm*sizeof(float));
for (ix = 0; ix < nxm; ix++) taper[ix] = 1.0;
for (ix = 0; ix < ntap; ix++) {
taper[ix] = exp(-1.0*(pow((0.4*(ntap-ix)/ntap), 2)));
taper[nxm-1-ix] = taper[ix];
}
cdata = (complex *)calloc(nxm*nfreq,sizeof(complex));
for (iom = iomin; iom <= iomax; iom++) {
for (ix = 0; ix < nx; ix++) {
ixrcv = NINT((xrcv[ix]-ox)/dxm);
cdata[iom*nxm+ixrcv].r += tmp1[iom*nx+ix].r;
cdata[iom*nxm+ixrcv].i += tmp1[iom*nx+ix].i*scl;
}
}
free(tmp1);
if(verbose) {
fprintf(stderr," xwBeam: number of depth steps = %d\n", ndepth);
fprintf(stderr," xwBeam: number of frequencies = %d\n", iomax-iomin+1);
}
tmp1 = (complex *)calloc(lenx, sizeof(complex));
tmp2 = (complex *)calloc(lenx, sizeof(complex));
opx = (complex *)calloc(hopl, sizeof(complex));
locbeam = (float *)calloc(nxm*ndepth, sizeof(float));
for (iom = iomin; iom <= iomax; iom++) {
om = iom*dom;
cprev = 0;
for (j = 0; j < nxm; j++) {
tmp1[hopl2+j].r = cdata[iom*nxm+j].r*taper[j];
tmp1[hopl2+j].i = cdata[iom*nxm+j].i*taper[j];
}
for (d = 0; d < ndepth; d++) {
for (ix = 0; ix < nxm; ix++) {
locbeam[d*nxm+ix] += sqrt(tmp1[hopl2+ix].r*tmp1[hopl2+ix].r+
tmp1[hopl2+ix].i*tmp1[hopl2+ix].i)*scale;
}
for (ix = 0; ix < nxm; ix++) {
c = velmod[d*nxm+ix];
if (c != cprev && c!=0.0) {
readtable_opt(opx, om/c, &hoplen);
cprev = c;
}
if (c==0.0) hoplen=0;
wa.r = wa.i = 0.0;
index1 = ix + hopl2;
for (j = 0; j < hoplen; j++) {
i1 = index1+j;
i2 = index1-j;
wa.r += (tmp1[i1].r + tmp1[i2].r)*opx[j].r;
wa.r -= (tmp1[i1].i + tmp1[i2].i)*opx[j].i;
wa.i += (tmp1[i1].i + tmp1[i2].i)*opx[j].r;
wa.i += (tmp1[i1].r + tmp1[i2].r)*opx[j].i;
}
if (hoplen != 0) tmp2[index1] = wa;
else tmp2[index1] = tmp1[index1];
}
for (j = 0; j < lenx; j++) tmp1[j] = tmp2[j];
}
}
for (d = 0; d < ndepth; d++) {
for (ix = 0; ix < nxm; ix++) {
beams[ix*ndepth+d] += locbeam[d*nxm+ix];
}
}
free(opx);
free(tmp1);
free(tmp2);
free(locbeam);
free(cdata);
free(taper);
return;
}
int applySource(modPar mod, srcPar src, wavPar wav, bndPar bnd, int itime, int ixsrc, int izsrc, float *vx, float *vz, float *tzz, float *txx, float *txz, float *rox, float *roz, float *l2m, float **src_nwav, int verbose)
{
int is0, ibndz, ibndx;
int isrc, ix, iz, n1;
int id1, id2;
float src_ampl, time, scl, dt, sdx;
static int first=1;
if (src.type==6) {
ibndz = mod.ioXz;
ibndx = mod.ioXx;
}
else if (src.type==7) {
ibndz = mod.ioZz;
ibndx = mod.ioZx;
}
else if (src.type==2) {
ibndz = mod.ioTz;
ibndx = mod.ioTx;
if (bnd.lef==4 || bnd.lef==2) ibndx += bnd.ntap;
if (bnd.top==4 || bnd.top==2) ibndz += bnd.ntap;
}
else {
ibndz = mod.ioPz;
ibndx = mod.ioPx;
if (bnd.lef==4 || bnd.lef==2) ibndx += bnd.ntap;
if (bnd.top==4 || bnd.top==2) ibndz += bnd.ntap;
}
n1 = mod.naz;
dt = mod.dt;
sdx = 1.0/mod.dx;
/* special txz source activated? */
if ((bnd.top==1) && (src.type==2)) {
iz = izsrc + ibndz;
if (iz==ibndz) {
if (src.orient != 1) {
if (first) {
vmess("Only monopole Txz source allowed at surface. Reset to monopole");
first = 0;
}
src.orient=1;
}
}
}
/*
* for plane wave sources the sources are placed
* around the central shot position
* the first source position has an offset in x of is0
*
* itime = 0 corresponds with time=0
* itime = 1 corresponds with time=dt
* src[0] (the first sample) corresponds with time = 0
*/
is0 = -1*floor((src.n-1)/2);
#pragma omp for private (isrc, src_ampl, ix, iz, time, id1, id2, scl)
for (isrc=0; isrc<src.n; isrc++) {
src_ampl=0.0;
/* calculate the source position */
if (src.random || src.multiwav) {
ix = src.x[isrc] + ibndx;
iz = src.z[isrc] + ibndz;
}
else { /* plane wave and point sources */
ix = ixsrc + ibndx + is0 + isrc;
iz = izsrc + ibndz;
}
time = itime*dt - src.tbeg[isrc];
id1 = floor(time/dt);
id2 = id1+1;
/* delay not reached or no samples left in source wavelet? */
if ( (time < 0.0) || ( (itime*dt) >= src.tend[isrc]) ) continue;
// fprintf(stderr,"isrc=%d ix=%d iz=%d src.x=%d src.z=%d\n", isrc, ix, iz, src.x[isrc], src.z[isrc]);
if (!src.multiwav) { /* only one wavelet for all sources */
src_ampl = src_nwav[0][id1]*(id2-time/dt) + src_nwav[0][id2]*(time/dt-id1);
}
else { /* multi-wavelet sources */
src_ampl = src_nwav[isrc][id1]*(id2-time/dt) + src_nwav[isrc][id2]*(time/dt-id1);
}
if (src_ampl==0.0) continue;
if ( ((ix-ibndx)<0) || ((ix-ibndx)>mod.nx) ) continue; /* source outside grid */
if (verbose>=4 && itime==0) {
vmess("Source %d positioned at grid ix=%d iz=%d",isrc, ix, iz);
}
if (verbose>5) {
vmess("Source %d at grid [ix=%d,iz=%d] at itime %d has value %e",isrc, ix,iz, itime, src_ampl);
}
/* cosine squared windowing to reduce edge effects on shot arrays */
if ( (src.n>1) && src.window) {
if (isrc < src.window) {
scl = cos(0.5*M_PI*(src.window - isrc)/src.window);
}
else if (isrc > src.n-src.window+1) {
scl = cos(0.5*M_PI*(src.window - (src.n-isrc+1))/src.window);
}
src_ampl *= scl*scl;
}
/* source scaling factor to compensate for discretisation */
/* old amplitude setting does not obey reciprocity */
// src_ampl *= rox[ix*n1+iz]*l2m[ix*n1+iz]/(dt);
/* added factor 2.0 to be compliant with defined Green's functions */
src_ampl *= (2.0/mod.dx)*l2m[ix*n1+iz];
/* Force source */
if (src.type == 6) {
// vx[ix*n1+iz] += src_ampl*(dt/mod.dx)/(l2m[ix*n1+iz]);
vx[ix*n1+iz] += src_ampl*rox[ix*n1+iz]/(l2m[ix*n1+iz]);
}
else if (src.type == 7) {
/* old amplitude setting does not obey reciprocity */
// vz[ix*n1+iz] += src_ampl*(dt/mod.dx)/(l2m[ix*n1+iz]);
vz[ix*n1+iz] += src_ampl*roz[ix*n1+iz]/(l2m[ix*n1+iz]);
// fprintf(stderr,"ix=%d iz=%d l2m=%e rox=%e rho=%e dt=%e dx=%e\n", ix, iz, l2m[ix*n1+iz], roz[ix*n1+iz], dt/(mod.dx*roz[ix*n1+iz]), dt, mod.dx);
} /* src.type */
/* Stress source */
if (mod.ischeme <= 2) { /* Acoustic scheme */
/* Compressional source */
if (src.type == 1) {
if (src.orient != 1) src_ampl=src_ampl/mod.dx;
if (src.orient==1) { /* monopole */
tzz[ix*n1+iz] += src_ampl;
}
else if (src.orient==2) { /* dipole +/- */
tzz[ix*n1+iz] += src_ampl;
tzz[ix*n1+iz+1] -= src_ampl;
}
else if (src.orient==3) { /* dipole - + */
tzz[ix*n1+iz] += src_ampl;
tzz[(ix-1)*n1+iz] -= src_ampl;
}
else if (src.orient==4) { /* dipole +/0/- */
if (iz > ibndz)
tzz[ix*n1+iz-1]+= 0.5*src_ampl;
if (iz < mod.nz+ibndz-1)
tzz[ix*n1+iz+1] -= 0.5*src_ampl;
}
else if (src.orient==5) { /* dipole + - */
tzz[ix*n1+iz] += src_ampl;
tzz[(ix+1)*n1+iz] -= src_ampl;
}
}
}
else { /* Elastic scheme */
/* Compressional source */
if (src.type == 1) {
if (src.orient==1) { /* monopole */
txx[ix*n1+iz] += src_ampl;
tzz[ix*n1+iz] += src_ampl;
}
else if (src.orient==2) { /* dipole +/- */
txx[ix*n1+iz] += src_ampl;
tzz[ix*n1+iz] += src_ampl;
txx[ix*n1+iz+1] -= src_ampl;
tzz[ix*n1+iz+1] -= src_ampl;
}
else if (src.orient==3) { /* dipole - + */
txx[ix*n1+iz] += src_ampl;
tzz[ix*n1+iz] += src_ampl;
txx[(ix-1)*n1+iz] -= src_ampl;
tzz[(ix-1)*n1+iz] -= src_ampl;
}
else if (src.orient==4) { /* dipole +/0/- */
if (iz > ibndz) {
txx[ix*n1+iz-1]+= 0.5*src_ampl;
tzz[ix*n1+iz-1]+= 0.5*src_ampl;
}
if (iz < mod.nz+ibndz-1) {
txx[ix*n1+iz+1] -= 0.5*src_ampl;
tzz[ix*n1+iz+1] -= 0.5*src_ampl;
}
}
else if (src.orient==5) { /* dipole + - */
txx[ix*n1+iz] += src_ampl;
tzz[ix*n1+iz] += src_ampl;
txx[(ix+1)*n1+iz] -= src_ampl;
tzz[(ix+1)*n1+iz] -= src_ampl;
}
}
else if (src.type == 2) {
/* Txz source */
if ((iz == ibndz) && bnd.top==1) {
txz[(ix-1)*n1+iz-1] += src_ampl;
txz[ix*n1+iz-1] += src_ampl;
}
else {
txz[ix*n1+iz] += src_ampl;
}
/* possible dipole orientations for a txz source */
if (src.orient == 2) { /* dipole +/- */
txz[ix*n1+iz+1] -= src_ampl;
}
else if (src.orient == 3) { /* dipole - + */
txz[(ix-1)*n1+iz] -= src_ampl;
}
else if (src.orient == 4) { /* dipole +/O/- */
/* correction: subtrace previous value to prevent z-1 values. */
txz[ix*n1+iz] -= 2.0*src_ampl;
txz[ix*n1+iz+1] += src_ampl;
}
else if (src.orient == 5) { /* dipole + - */
txz[(ix+1)*n1+iz] -= src_ampl;
}
}
/* Tzz source */
else if(src.type == 3) {
tzz[ix*n1+iz] += src_ampl;
}
/* Txx source */
else if(src.type == 4) {
txx[ix*n1+iz] += src_ampl;
}
/***********************************************************************
* pure potential shear S source (experimental)
* Curl S-pot = CURL(F) = dF_x/dz - dF_z/dx
***********************************************************************/
else if(src.type == 5) {
src_ampl = src_ampl*rox[ix*n1+iz]/(l2m[ix*n1+iz]);
if (src.orient == 3) src_ampl = -src_ampl;
/* first order derivatives */
vx[ix*n1+iz] += src_ampl*sdx;
vx[ix*n1+iz-1] -= src_ampl*sdx;
vz[ix*n1+iz] -= src_ampl*sdx;
vz[(ix-1)*n1+iz] += src_ampl*sdx;
/* second order derivatives */
/*
vx[ix*n1+iz] += c1*src_ampl*sdx;
vx[ix*n1+iz-1] -= c1*src_ampl*sdx;
vx[ix*n1+iz+1] += c2*src_ampl*sdx;
vx[ix*n1+iz-2] -= c2*src_ampl*sdx;
vz[ix*n1+iz] -= c1*src_ampl*sdx;
vz[(ix-1)*n1+iz] += c1*src_ampl*sdx;
vz[(ix+1)*n1+iz] -= c2*src_ampl*sdx;
vz[(ix-2)*n1+iz] += c2*src_ampl*sdx;
*/
/* determine second position of dipole */
if (src.orient == 2) { /* dipole +/- vertical */
iz += 1;
vx[ix*n1+iz] -= src_ampl*sdx;
vx[ix*n1+iz-1] += src_ampl*sdx;
vz[ix*n1+iz] += src_ampl*sdx;
vz[(ix-1)*n1+iz] -= src_ampl*sdx;
}
else if (src.orient == 3) { /* dipole - + horizontal */
ix += 1;
vx[ix*n1+iz] -= src_ampl*sdx;
vx[ix*n1+iz-1] += src_ampl*sdx;
vz[ix*n1+iz] += src_ampl*sdx;
vz[(ix-1)*n1+iz] -= src_ampl*sdx;
}
}
/***********************************************************************
* pure potential pressure P source (experimental)
* Divergence P-pot = DIV(F) = dF_x/dx + dF_z/dz
***********************************************************************/
else if(src.type == 8) {
src_ampl = src_ampl*rox[ix*n1+iz]/(l2m[ix*n1+iz]);
if (src.orient == 3) src_ampl = -src_ampl;
vx[(ix+1)*n1+iz] += src_ampl*sdx;
vx[ix*n1+iz] -= src_ampl*sdx;
vz[ix*n1+iz+1] += src_ampl*sdx;
vz[ix*n1+iz] -= src_ampl*sdx;
/* determine second position of dipole */
if (src.orient == 2) { /* dipole +/- */
iz += 1;
vx[(ix+1)*n1+iz] -= src_ampl*sdx;
vx[ix*n1+iz] += src_ampl*sdx;
vz[ix*n1+iz+1] -= src_ampl*sdx;
vz[ix*n1+iz] += src_ampl*sdx;
}
else if (src.orient == 3) { /* dipole - + */
ix += 1;
vx[(ix+1)*n1+iz] -= src_ampl*sdx;
vx[ix*n1+iz] += src_ampl*sdx;
vz[ix*n1+iz+1] -= src_ampl*sdx;
vz[ix*n1+iz] += src_ampl*sdx;
}
} /* src.type */
} /* ischeme */
} /* loop over isrc */
return 0;
}
int writeBeams(modPar mod, snaPar sna, int ixsrc, int izsrc, int ishot, int fileno,
float *beam_vx, float *beam_vz, float *beam_txx, float *beam_tzz, float *beam_txz,
float *beam_p, float *beam_pp, float *beam_ss, int verbose)
{
FILE *fpvx, *fpvz, *fptxx, *fptzz, *fptxz, *fpp, *fppp, *fpss;
int append;
int ix;
char number[16], filename[1024];
segy hdr;
if (sna.beam==0) return 0;
/* all beam snapshots are written to the same output file(s) */
if (ishot) append=1;
else append=0;
strcpy(filename, sna.file_beam);
if (fileno) {
sprintf(number,"_%03d",fileno);
name_ext(filename, number);
}
if (verbose>2) vmess("Writing beam data to file %s", filename);
if (sna.type.vx) fpvx = fileOpen(filename, "_bvx", append);
if (sna.type.vz) fpvz = fileOpen(filename, "_bvz", append);
if (sna.type.p) fpp = fileOpen(filename, "_bp", append);
if (sna.type.txx) fptxx = fileOpen(filename, "_btxx", append);
if (sna.type.tzz) fptzz = fileOpen(filename, "_btzz", append);
if (sna.type.txz) fptxz = fileOpen(filename, "_btxz", append);
if (sna.type.pp) fppp = fileOpen(filename, "_bpp", append);
if (sna.type.ss) fpss = fileOpen(filename, "_bss", append);
memset(&hdr,0,TRCBYTES);
hdr.dt = 1000000*(mod.dt);
hdr.scalco = -1000;
hdr.scalel = -1000;
hdr.sx = 1000*(mod.x0+ixsrc*mod.dx);
hdr.sdepth = 1000*(mod.z0+izsrc*mod.dz);
hdr.fldr = ishot+1;
hdr.trid = 1;
hdr.ns = sna.nz;
hdr.trwf = sna.nx;
hdr.ntr = sna.nx;
hdr.f1 = sna.z1*mod.dz+mod.z0;
hdr.f2 = sna.x1*mod.dx+mod.x0;
hdr.d1 = mod.dz*sna.skipdz;
hdr.d2 = mod.dx*sna.skipdx;
for (ix=0; ix<sna.nx; ix++) {
hdr.tracf = ix+1;
hdr.tracl = ix+1;
hdr.gx = 1000*(mod.x0+(sna.x1+ix)*mod.dx);
if (sna.type.vx) {
traceWrite( &hdr, &beam_vx[ix*sna.nz], sna.nz, fpvx) ;
}
if (sna.type.vz) {
traceWrite( &hdr, &beam_vz[ix*sna.nz], sna.nz, fpvz) ;
}
if (sna.type.p) {
traceWrite( &hdr, &beam_p[ix*sna.nz], sna.nz, fpp) ;
}
if (sna.type.tzz) {
traceWrite( &hdr, &beam_tzz[ix*sna.nz], sna.nz, fptzz) ;
}
if (sna.type.txx) {
traceWrite( &hdr, &beam_txx[ix*sna.nz], sna.nz, fptxx) ;
}
if (sna.type.txz) {
traceWrite( &hdr, &beam_txz[ix*sna.nz], sna.nz, fptxz) ;
}
if (sna.type.pp) {
traceWrite( &hdr, &beam_pp[ix*sna.nz], sna.nz, fppp) ;
}
if (sna.type.ss) {
traceWrite( &hdr, &beam_ss[ix*sna.nz], sna.nz, fpss) ;
}
}
if (sna.type.vx) fclose(fpvx);
if (sna.type.vz) fclose(fpvz);
if (sna.type.p) fclose(fpp);
if (sna.type.txx) fclose(fptxx);
if (sna.type.tzz) fclose(fptzz);
if (sna.type.txz) fclose(fptxz);
if (sna.type.pp) fclose(fppp);
if (sna.type.ss) fclose(fpss);
return 0;
}
void kwZoMigr(float *data, int nx, int nt, float dt, float *velmod, int nxm, int nzm, int ixa, int ixb, float fmin, float fmax, float *xrcv, int izrcv, float ox, float dxm, float dz, int ntap, int conjg, int ndepth, float *image, int verbose, float *exrcv, int ndepthex)
{
int iomin, iomax, iom, ix, d, i, j;
int nfreq, optn, nkx, sign, endkx;
int ixrcv, ixmin, ixmax, ixo, ixn, ikx;
float k, k2, kz2, kx, kx2;
float dom, om, c, dkx, df, sr;
float *taper, scl, scl2, *pdata;
float *trace;
complex *ctrace;
float t0, t1;
complex *cdata, tmp, ez;
complex wa, *ctmp, da, *locdat;
complex *cexrcv=(complex *) exrcv;
/* define some constants */
optn = optncr(nt);
nfreq = optn/2 + 1;
df = 1.0/(optn*dt);
dom = 2.0*M_PI*df;
iomin = (int)MIN((fmin*dt*optn), (nfreq-1));
iomin = MAX(iomin, 1);
iomax = MIN((int)(fmax*dt*optn), (nfreq-1));
/* transformation of shot record to frequency domain */
trace = (float *)calloc(optn,sizeof(float));
ctrace = (complex *)malloc(optn*sizeof(complex));
cdata = (complex *)calloc(nxm*nfreq, sizeof(complex));
if (conjg) scl = -1.0;
else scl = 1.0;
sign = -1;
for (ix = 0; ix < nx; ix++) {
memcpy(trace,&data[ix*nt],nt*sizeof(float));
if (optn > nt)
memset( &trace[nt], 0, sizeof(float)*(optn-nt) );
rc1fft(trace,ctrace,optn,sign);
ixrcv = NINT((xrcv[ix]-ox)/dxm);
if (ixrcv < 0 || ixrcv > nxm-1) {
fprintf(stderr,"kwZoMigr: ixrcv %f (%d) outside model\n", xrcv[ix], ixrcv);
continue;
}
for (iom=0; iom<nfreq; iom++) {
/* positioning of shot record into velocity model */
cdata[iom*nxm+ixrcv].r = ctrace[iom].r;
cdata[iom*nxm+ixrcv].i = ctrace[iom].i*scl;
}
}
/* determine aperture to be calculated */
ixo = nxm;
ixn = 0;
for (ix = 0; ix < nx; ix++) {
ixrcv = NINT((xrcv[ix]-ox)/dxm);
if (ixrcv < ixo) ixo = ixrcv;
if (ixrcv > ixn) ixn = ixrcv;
}
ixmin = MAX(0, ixo-ixb-1);
ixmax = MIN(ixn+ixa+1, nxm-1);
nx = (ixmax-ixmin)+1;
if (verbose>=2) {
vmess("kwZoMigr: calculation aperture: %.2f (%d) <--> %.2f (%d) (%d positions)", ixmin*dxm+ox, ixmin, ixmax*dxm+ox, ixmax, nx);
}
/* define some constants */
scl = 2.0/nfreq;
scl = 1.0/(dt*dxm*dxm);
nkx = optncc(2*ntap+nxm);
ntap = (nkx-nxm)/2;
scl2 = 1.0/nkx;
dkx = 2.0*M_PI/(nkx*dxm);
taper = (float *)malloc(ntap*sizeof(float));
for (ix = 0; ix < ntap; ix++) {
taper[ix] = exp(-1.0*(pow((0.4*(ntap-ix)/ntap), 2)));
}
/* calculate image at depth = 0 */
if(izrcv==0 ) {
for (ix = ixmin; ix <= ixmax; ix++) {
for (iom = iomin; iom <= iomax; iom++) {
image[ix*nzm+0] += scl*cdata[iom*nxm+ix].r;
}
}
}
t0 = wallclock_time();
locdat = (complex *)malloc(nkx*sizeof(complex));
/* start extrapolation for all frequencies, depths and x-positions */
for (iom = iomin; iom <= iomax; iom++) {
memset(locdat,0,nkx*sizeof(complex));
for (ix = ixmin; ix <= ixmax; ix++) {
locdat[ntap+ix] = cdata[iom*nxm+ix];
}
om = iom*dom;
d = izrcv;
/* start extrapolation of receiver arrays */
for (; d < ndepth; d++) {
/* transform to wavenumber domain */
cc1fft(locdat, nkx, 1);
/* Extrapolation of data */
c = 0.0;
for (ix = ixmin; ix <= ixmax; ix++) c += velmod[d*nxm+ix];
k = nx*om/c;
k2 = k*k;
/* kx = 0 */
ez.r = cos(k*dz);
ez.i = -sin(k*dz);
tmp.r = ez.r*locdat[0].r;
tmp.r += ez.i*locdat[0].i;
tmp.i = ez.r*locdat[0].i;
tmp.i -= ez.i*locdat[0].r;
locdat[0] = tmp;
/* kx != 0 */
endkx = MIN((int)(k/dkx),nkx/2);
for (ikx = 1; ikx <= endkx; ikx++) {
kx = ikx*dkx;
kx2 = kx*kx;
kz2 = k2 - kx2;
ez.r = cos(sqrt(kz2)*dz);
ez.i = -sin(sqrt(kz2)*dz);
tmp.r = ez.r*locdat[ikx].r;
tmp.r += ez.i*locdat[ikx].i;
tmp.i = ez.r*locdat[ikx].i;
tmp.i -= ez.i*locdat[ikx].r;
locdat[ikx] = tmp;
tmp.r = ez.r*locdat[nkx-ikx].r;
tmp.r += ez.i*locdat[nkx-ikx].i;
tmp.i = ez.r*locdat[nkx-ikx].i;
tmp.i -= ez.i*locdat[nkx-ikx].r;
locdat[nkx-ikx] = tmp;
}
/* transform data back to space domain */
cc1fft(locdat, nkx, -1);
for (j = 0; j < nkx; j++) {
locdat[j].r *= scl2;
locdat[j].i *= scl2;
}
/* imaging condition */
for (ix = ixmin; ix <= ixmax; ix++) {
image[ix*nzm+d+1]+= scl*locdat[ntap+ix].r;
}
/* save extrapolated field at requested depth */
if (d==ndepthex-1) {
if ( cexrcv != NULL ) {
for (ix = 0; ix < nxm; ix++) {
cexrcv[iom*nxm+ix] = locdat[ntap+ix];
}
}
}
/* taper extrapolated data at edges */
for (j = 0; j < ntap; j++) {
locdat[j].r *= taper[j];
locdat[j].i *= taper[j];
locdat[nkx-j-1].r *= taper[j];
locdat[nkx-j-1].i *= taper[j];
}
} /* end of depth loop */
} /* end of iom loop */
if(exrcv) wx2xt(cexrcv, exrcv, optn, nxm, nxm, optn);
free(locdat);
free(cdata);
free(taper);
t1 = wallclock_time();
vmess("kwZoMigr took: %f seconds", t1-t0);
return;
}
int main (int argc, char **argv)
{
FILE *fp_in1, *fp_in2, *fp_out, *fp_chk, *fp_psline1, *fp_psline2;
int verbose, shift, k, nx1, nt1, nx2, nt2;
int ntmax, nxmax, ret, i, j, jmax, imax, above, check;
int size, ntraces, ngath, *maxval, hw, smooth;
int tstart, tend, scale, *xrcv;
float dt, d2, f1, f2, t0, t1, f1b, f2b, d1, d1b, d2b;
float w1, w2, dxrcv;
float *tmpdata, *tmpdata2, *costaper;
char *file_mute, *file_shot, *file_out;
float scl, sclsxgx, sclshot, xmin, xmax, tmax, lmax;
segy *hdrs_in1, *hdrs_in2;
t0 = wallclock_time();
initargs(argc, argv);
requestdoc(1);
if(!getparstring("file_mute", &file_mute)) file_mute=NULL;
if(!getparstring("file_shot", &file_shot)) file_shot=NULL;
if(!getparstring("file_out", &file_out)) file_out=NULL;
if(!getparint("ntmax", &ntmax)) ntmax = 1024;
if(!getparint("nxmax", &nxmax)) nxmax = 512;
if(!getparint("above", &above)) above = 0;
if(!getparint("check", &check)) check = 0;
if(!getparint("scale", &scale)) scale = 0;
if(!getparint("hw", &hw)) hw = 15;
if(!getparint("smooth", &smooth)) smooth = 0;
if(!getparfloat("w1", &w1)) w1=1.0;
if(!getparfloat("w2", &w2)) w2=1.0;
if(!getparint("shift", &shift)) shift=0;
if(!getparint("verbose", &verbose)) verbose=0;
/* Reading input data for file_mute */
if (file_mute != NULL) {
ngath = 1;
getFileInfo(file_mute, &nt1, &nx1, &ngath, &d1, &d2, &f1, &f2, &xmin, &xmax, &sclsxgx, &ntraces);
if (!getparint("ntmax", &ntmax)) ntmax = nt1;
if (!getparint("nxmax", &nxmax)) nxmax = nx1;
if (verbose>=2 && (ntmax!=nt1 || nxmax!=nx1))
vmess("dimensions overruled: %d x %d",ntmax,nxmax);
if(!getparfloat("dt", &dt)) dt=d1;
fp_in1 = fopen(file_mute, "r");
if (fp_in1 == NULL) verr("error on opening input file_mute=%s", file_mute);
size = ntmax * nxmax;
tmpdata = (float *)malloc(size*sizeof(float));
hdrs_in1 = (segy *) calloc(nxmax,sizeof(segy));
nx1 = readData(fp_in1, tmpdata, hdrs_in1, nt1);
if (nx1 == 0) {
fclose(fp_in1);
if (verbose) vmess("end of file_mute data reached");
}
if (verbose) {
disp_fileinfo(file_mute, nt1, nx1, f1, f2, dt, d2, hdrs_in1);
}
}
/* Reading input data for file_shot */
ngath = 1;
getFileInfo(file_shot, &nt2, &nx2, &ngath, &d1b, &d2b, &f1b, &f2b, &xmin, &xmax, &sclshot, &ntraces);
if (!getparint("ntmax", &ntmax)) ntmax = nt2;
if (!getparint("nxmax", &nxmax)) nxmax = nx2;
size = ntmax * nxmax;
tmpdata2 = (float *)malloc(size*sizeof(float));
hdrs_in2 = (segy *) calloc(nxmax,sizeof(segy));
if (file_shot != NULL) fp_in2 = fopen(file_shot, "r");
else fp_in2=stdin;
if (fp_in2 == NULL) verr("error on opening input file_shot=%s", file_shot);
nx2 = readData(fp_in2, tmpdata2, hdrs_in2, nt2);
if (nx2 == 0) {
fclose(fp_in2);
if (verbose) vmess("end of file_shot data reached");
}
nt2 = hdrs_in2[0].ns;
f1b = hdrs_in2[0].f1;
f2b = hdrs_in2[0].f2;
d1b = (float)hdrs_in2[0].dt*1e-6;
if (verbose) {
disp_fileinfo(file_shot, nt2, nx2, f1b, f2b, d1b, d2b, hdrs_in2);
}
/* file_shot will be used as well to define the mute window */
if (file_mute == NULL) {
nx1=nx2;
nt1=nt2;
dt=d1b;
f1=f1b;
f2=f2b;
tmpdata = tmpdata2;
hdrs_in1 = hdrs_in2;
}
if (verbose) vmess("sampling file_mute=%d, file_shot=%d", nt1, nt2);
/*================ initializations ================*/
maxval = (int *)calloc(nx1,sizeof(int));
xrcv = (int *)calloc(nx1,sizeof(int));
if (file_out==NULL) fp_out = stdout;
else {
fp_out = fopen(file_out, "w+");
if (fp_out==NULL) verr("error on ceating output file");
}
if (check!=0){
fp_chk = fopen("check.su", "w+");
if (fp_chk==NULL) verr("error on ceating output file");
fp_psline1 = fopen("pslinepos.asci", "w+");
if (fp_psline1==NULL) verr("error on ceating output file");
fp_psline2 = fopen("pslineneg.asci", "w+");
if (fp_psline2==NULL) verr("error on ceating output file");
}
if (smooth) {
costaper = (float *)malloc(smooth*sizeof(float));
scl = M_PI/((float)smooth);
for (i=0; i<smooth; i++) {
costaper[i] = 0.5*(1.0+cos((i+1)*scl));
/* fprintf(stderr,"costaper[%d]=%f\n",i,costaper[i]);*/
}
}
/*================ loop over all shot records ================*/
k=1;
while (nx1 > 0) {
if (verbose) vmess("processing input gather %d", k);
/*================ loop over all shot records ================*/
/* find consistent (one event) maximum related to maximum value */
/* find global maximum
xmax=0.0;
for (i = 0; i < nx1; i++) {
tmax=0.0;
jmax = 0;
for (j = 0; j < nt1; j++) {
lmax = fabs(tmpdata[i*nt1+j]);
if (lmax > tmax) {
jmax = j;
tmax = lmax;
if (lmax > xmax) {
imax = i;
xmax=lmax;
}
}
}
maxval[i] = jmax;
}
*/
/* alternative find maximum at source position */
dxrcv = (hdrs_in1[nx1-1].gx - hdrs_in1[0].gx)*sclsxgx/(float)(nx1-1);
imax = NINT(((hdrs_in1[0].sx-hdrs_in1[0].gx)*sclsxgx)/dxrcv);
tmax=0.0;
jmax = 0;
for (j = 0; j < nt1; j++) {
lmax = fabs(tmpdata[imax*nt1+j]);
if (lmax > tmax) {
jmax = j;
tmax = lmax;
if (lmax > xmax) {
xmax=lmax;
}
}
}
maxval[imax] = jmax;
if (verbose >= 3) vmess("Mute max at src-trace %d is sample %d", imax, maxval[imax]);
/* search forward */
for (i = imax+1; i < nx1; i++) {
tstart = MAX(0, (maxval[i-1]-hw));
tend = MIN(nt1-1, (maxval[i-1]+hw));
jmax=tstart;
tmax=0.0;
for(j = tstart; j <= tend; j++) {
lmax = fabs(tmpdata[i*nt1+j]);
if (lmax > tmax) {
jmax = j;
tmax = lmax;
}
}
maxval[i] = jmax;
}
/* search backward */
for (i = imax-1; i >=0; i--) {
tstart = MAX(0, (maxval[i+1]-hw));
tend = MIN(nt1-1, (maxval[i+1]+hw));
jmax=tstart;
tmax=0.0;
for(j = tstart; j <= tend; j++) {
lmax = fabs(tmpdata[i*nt1+j]);
if (lmax > tmax) {
jmax = j;
tmax = lmax;
}
}
maxval[i] = jmax;
}
/* scale with maximum ampltiude */
if (scale==1) {
for (i = 0; i < nx2; i++) {
lmax = fabs(tmpdata2[i*nt2+maxval[i]]);
xrcv[i] = i;
for (j = 0; j < nt2; j++) {
tmpdata2[i*nt2+j] = tmpdata2[i*nt2+j]/lmax;
}
}
}
/*================ apply mute window ================*/
applyMute(tmpdata2, maxval, smooth, above, 1, nx2, nt2, xrcv, nx2, shift);
/*================ write result to output file ================*/
ret = writeData(fp_out, tmpdata2, hdrs_in2, nt2, nx2);
if (ret < 0 ) verr("error on writing output file.");
/* put mute window in file to check correctness of mute */
if (check !=0) {
for (i = 0; i < nx1; i++) {
jmax = maxval[i]-shift;
tmpdata[i*nt1+jmax] = 2*xmax;
}
if (above==0){
for (i = 0; i < nx1; i++) {
jmax = nt2-maxval[i]+shift;
tmpdata[i*nt1+jmax] = 2*xmax;
}
}
ret = writeData(fp_chk, tmpdata, hdrs_in1, nt1, nx1);
if (ret < 0 ) verr("error on writing check file.");
for (i=0; i<nx1; i++) {
jmax = maxval[i]-shift;
ret = fprintf(fp_psline1, "%.5f %.5f \n",jmax*dt,hdrs_in1[i].gx*sclshot);
jmax =-maxval[i]+shift;
ret = fprintf(fp_psline2, "%.5f %.5f \n",jmax*dt,hdrs_in1[i].gx*sclshot);
}
}
/*================ Read next record for muting ================*/
if (file_mute != NULL) {
nx1 = readData(fp_in1, tmpdata, hdrs_in1, nt1);
if (nx1 == 0) {
fclose(fp_in1);
if (verbose) vmess("end of file_mute data reached");
fclose(fp_in2);
if (fp_out!=stdout) fclose(fp_out);
if (check!=0) fclose(fp_chk);
if (check!=0) {
fclose(fp_psline1);
fclose(fp_psline2);
}
break;
}
nt1 = (int)hdrs_in1[0].ns;
if (nt1 > ntmax) verr("n_samples (%d) greater than ntmax", nt1);
if (nx1 > nxmax) verr("n_traces (%d) greater than nxmax", nx1);
}
/*================ Read next shot record(s) ================*/
nx2 = readData(fp_in2, tmpdata2, hdrs_in2, nt2);
if (nx2 == 0) {
if (verbose) vmess("end of file_shot data reached");
fclose(fp_in2);
break;
}
nt2 = (int)hdrs_in2[0].ns;
if (nt2 > ntmax) verr("n_samples (%d) greater than ntmax", nt2);
if (nx2 > nxmax) verr("n_traces (%d) greater than nxmax", nx2);
if (file_mute == NULL) {
nx1=nx2;
nt1=nt2;
hdrs_in1 = hdrs_in2;
tmpdata = tmpdata2;
}
k++;
}
t1 = wallclock_time();
if (verbose) vmess("Total CPU-time = %f",t1-t0);
return 0;
}
int main (int argc, char **argv)
{
FILE *fp_in, *fp_shot, *fp_out;
char *fin, *fshot, *fout, *ptr, fbegin[100], fend[100], fins[100], fin2[100];
float *indata, *Ghom, *shotdata, *rtrace, *costaper, scl, rho, *taper;
float dt, dx, t0, x0, xmin, xmax1, sclsxgx, f1, f2, dxrcv, dzrcv, dxpos, dw;
int nshots, nt, nw, nx, ntraces, ret, ix, it, is, ir, pos, ifile, file_det, nxs, nzs, sxmin, sxmax;
int pos1, xcount, zcount, npos, zmax, file_cl, ht, inx, numb, dnumb, indrcv, shift;
int rmt, smooth, *tol, tolside, tolset, mode, i, j, ntap;
segy *hdr_in, *hdr_out, *hdr_shot;
initargs(argc, argv);
requestdoc(1);
if (!getparstring("fin", &fin)) fin = NULL;
if (!getparstring("fshot", &fshot)) fshot = NULL;
if (!getparstring("fout", &fout)) fout = "out.su";
if (!getparint("zmax", &zmax)) zmax = 0;
if (!getparint("inx", &inx)) inx = 0;
if (!getparfloat("zrcv", &f1)) f1 = 0;
if (!getparfloat("xrcv", &f2)) f2 = 0;
if (!getparfloat("dzrcv", &dzrcv)) dzrcv = -1;
if (!getparfloat("dxrcv", &dxrcv)) dxrcv = -1;
if (!getparfloat("rho", &rho)) rho=1000.0;
if (!getparint("numb", &numb)) numb=0;
if (!getparint("dnumb", &dnumb)) dnumb=1;
if (!getparint("tolset", &tolset)) tolset=10;
if (!getparint("mode", &mode)) mode=0;
if (!getparint("ntap", &ntap)) ntap=0;
if (fin == NULL) verr("Incorrect f2 input");
if (fshot == NULL) verr("Incorrect Green input");
if (dnumb == 0) dnumb = 1;
ptr = strstr(fin,"z0");
pos1 = ptr - fin + 1;
sprintf(fbegin,"%*.*s", pos1-1, pos1-1, fin);
sprintf(fend,"%s", fin+pos1+1);
file_det = 1;
zcount=0;
nzs=0;
while (file_det) {
sprintf(fins,"z%d",nzs*dnumb+numb);
sprintf(fin,"%s%s%s",fbegin,fins,fend);
fp_in = fopen(fin, "r");
if (fp_in == NULL) {
if (nzs == 0) {
verr("error on opening basefile=%s", fin);
}
else if (nzs == 1) {
vmess("1 file detected");
file_det = 0;
break;
}
else {
vmess("%d files detected",nzs);
file_det = 0;
break;
}
}
fclose(fp_in);
nzs++;
}
if (inx < 1) {
inx = 1;
}
if (zmax < 1) zmax=1;
if (zmax < nzs) nzs=zmax;
nxs = inx;
npos = nxs*nzs;
vmess("nxs: %d, nzs: %d",nxs,nzs);
nshots = 0;
getFileInfo(fshot, &nt, &nx, &nshots, &dt, &dx, &t0, &x0, &xmin, &xmax1, &sclsxgx, &ntraces);
if (dxrcv < 0) dxrcv=dx;
if (dzrcv < 0) dzrcv=dx;
// ngath zijn het aantal schoten
shotdata = (float *)malloc(nt*nx*nshots*sizeof(float));
hdr_shot = (segy *)calloc(nx*nshots,sizeof(segy));
fp_shot = fopen(fshot,"r");
if (fp_shot == NULL) {
verr("Could not open file");
}
vmess("nt: %d nx: %d nshots: %d",nt,nx,nshots);
nx = readData(fp_shot, shotdata, hdr_shot, nt);
fclose(fp_shot);
hdr_out = (segy *)calloc(nxs,sizeof(segy));
Ghom = (float *)calloc(nt*npos,sizeof(float));
ht = (int)ceil(nt/2);
nw = ht+1;
dw = 2.0*(M_PI)/(dt*nt);
tol = (int *)malloc(nxs*sizeof(float));
taper = (float *)malloc(nx*sizeof(float));
for (i=0; i<nx; i++) {
taper[i] = 1.0;
}
if (ntap > 0) {//Create taper
for (i=0; i<ntap; i++) {
taper[i] = (cos((M_PI)*(i-ntap)/ntap)+1)/2.0;
taper[nx-1-i] = (cos((M_PI)*(i-ntap)/ntap)+1)/2.0;
}
}
#pragma omp parallel default(shared) \
private(rtrace,ix,it,is) \
private(indata, hdr_in,fins,fin2,fp_in)
{
rtrace = (float *)malloc(nt*nx*sizeof(float));
indata = (float *)malloc(nt*nx*nxs*sizeof(float));
hdr_in = (segy *)calloc(nx*nxs,sizeof(segy));
#pragma omp for
for (ir = 0; ir < nzs; ir++) {
sprintf(fins,"z%d",ir*dnumb+numb);
sprintf(fin2,"%s%s%s",fbegin,fins,fend);
fp_in = fopen(fin2, "r");
if (fp_in == NULL) {
verr("Danger Will Robinson");
}
fclose(fp_in);
readSnapData(fin2, &indata[0], &hdr_in[0], nxs, nx, nt, 0, nx, 0, nt);
for (is = 0; is < nxs; is++) {
convolhom(shotdata, &indata[is*nx*nt], rtrace, nx, nt, dt, 0, rho, mode);
if (mode==0) {//single source
for (i=0; i<nx; i++) {
j=0;
Ghom[(j+nt/2)*nxs] += (rtrace[i*nt+j] + rtrace[i*nt+j])*taper[i];
for (j=1; j<nt/2; j++) {
Ghom[(j+nt/2)*nxs] += (rtrace[i*nt+j] + rtrace[i*nt+nt-j])*taper[i];
Ghom[j*nxs] += (rtrace[i*nt+(j+nt/2)] + rtrace[i*nt+nt-(j+nt/2)])*taper[i];
}
}
}
else {//multiple sources
for (i=0; i<nx; i++) {
j=0;
Ghom[(j+nt/2)*nxs] += (rtrace[i*nt+j])*taper[i];
for (j=1; j<nt/2; j++) {
Ghom[(j+nt/2)*nxs] += (rtrace[i*nt+j])*taper[i];
Ghom[j*nxs] += (rtrace[i*nt+(j+nt/2)])*taper[i];
}
}
}
}
vmess("Creating Homogeneous Green's function at depth %d from %d depths",ir+1,nzs);
}
free(rtrace);
free(indata);free(hdr_in);
}
free(shotdata);
vmess("nxs: %d nxz: %d f1: %.7f",nxs,nzs,f1);
fp_out = fopen(fout, "w+");
for (ir = 0; ir < nt; ir++) {
for (ix = 0; ix < nxs; ix++) {
hdr_out[ix].fldr = ir+1;
hdr_out[ix].tracl = ir*nxs+ix+1;
hdr_out[ix].tracf = ix+1;
hdr_out[ix].scalco = hdr_shot[0].scalco;
hdr_out[ix].scalel = hdr_shot[0].scalel;
hdr_out[ix].sdepth = hdr_shot[0].sdepth;
hdr_out[ix].trid = 1;
hdr_out[ix].ns = nzs;
hdr_out[ix].trwf = nxs;
hdr_out[ix].ntr = hdr_out[ix].fldr*hdr_out[ix].trwf;
hdr_out[ix].f1 = f1;
hdr_out[ix].f2 = f2/1000;
hdr_out[ix].dt = dt*(1E6);
hdr_out[ix].d1 = dzrcv;
hdr_out[ix].d2 = dxrcv;
hdr_out[ix].sx = hdr_shot[0].sx;
hdr_out[ix].gx = (int)roundf(f2 + (ix*hdr_out[ix].d2)*1000.0);
hdr_out[ix].offset = (hdr_out[ix].gx - hdr_out[ix].sx)/1000.0;
}
ret = writeData(fp_out, &Ghom[ir*nxs*nzs], hdr_out, nzs, nxs);
if (ret < 0 ) verr("error on writing output file.");
}
fclose(fp_out);
return 0;
}
void synthesisPosistions(int nx, int nt, int nxs, int nts, float dt, float *xsyn, int Nsyn, float *xrcv, float *xsrc, float fxs2, float fxs, float dxs, float dxsrc, float dx, int ixa, int ixb, int reci, int nshots, int *ixpossyn, int *npossyn, int verbose)
{
int iox, inx;
int i, l, ixsrc, ix, dosrc, k;
float x0, x1;
/*================ SYNTHESIS ================*/
for (l = 0; l < 1; l++) { /* assuming all synthesis operators cover the same lateral area */
// for (l = 0; l < Nsyn; l++) {
*npossyn=0;
for (k=0; k<nshots; k++) {
ixsrc = NINT((xsrc[k] - fxs)/dxs);
if (verbose>=3) {
vmess("source position: %.2f in operator %d", xsrc[k], ixsrc);
vmess("receiver positions: %.2f <--> %.2f", xrcv[k*nx+0], xrcv[k*nx+nx-1]);
}
if ((NINT(xsrc[k]-fxs2) > 0) || (NINT(xrcv[k*nx+nx-1]-fxs2) > 0) ||
(NINT(xrcv[k*nx+nx-1]-fxs) < 0) || (NINT(xsrc[k]-fxs) < 0) ||
(NINT(xrcv[k*nx+0]-fxs) < 0) || (NINT(xrcv[k*nx+0]-fxs2) > 0) ) {
vwarn("source/receiver positions are outside synthesis model");
vwarn("integration calculation is stopped at gather %d", k);
vmess("xsrc = %.2f xrcv_1 = %.2f xrvc_N = %.2f", xsrc[k], xrcv[k*nx+0], xrcv[k*nx+nx-1]);
break;
}
iox = 0; inx = nx;
if (ixa || ixb) {
if (reci == 0) {
x0 = xsyn[l]-ixb*dxsrc;
x1 = xsyn[l]+ixa*dxsrc;
if ((xsrc[k] < x0) || (xsrc[k] > x1)) continue;
ix = NINT((xsrc[k]-x0)/dxsrc);
dosrc = 1;
}
else if (reci == 1) {
x0 = xsyn[l]-ixb*dxs;
x1 = xsyn[l]+ixa*dxs;
if (((xsrc[k] < x0) || (xsrc[k] > x1)) &&
(xrcv[k*nx+0] < x0) && (xrcv[k*nx+nx-1] < x0)) continue;
if (((xsrc[k] < x0) || (xsrc[k] > x1)) &&
(xrcv[k*nx+0] > x1) && (xrcv[k*nx+nx-1] > x1)) continue;
if ((xsrc[k] < x0) || (xsrc[k] > x1)) dosrc = 0;
else dosrc = 1;
ix = NINT((xsrc[k]-x0)/dxs);
}
else if (reci == 2) {
if (NINT(dxsrc/dx)*dx != NINT(dxsrc)) dx = dxs;
x0 = xsyn[l]-ixb*dx;
x1 = xsyn[l]+ixa*dx;
if ((xrcv[k*nx+0] < x0) && (xrcv[k*nx+nx-1] < x0)) continue;
if ((xrcv[k*nx+0] > x1) && (xrcv[k*nx+nx-1] > x1)) continue;
}
}
else {
ix = k;
x0 = fxs;
x1 = fxs+dxs*nxs;
dosrc = 1;
}
if (reci == 1 && dosrc) ix = NINT((xsrc[k]-x0)/dxs);
if (reci < 2 && dosrc) {
ixpossyn[*npossyn]=ixsrc;
*npossyn += 1;
}
if (verbose>=3) {
vmess("ixpossyn[%d] = %d ixsrc=%d ix=%d", *npossyn-1, ixpossyn[*npossyn-1], ixsrc, ix);
}
if (reci == 1 || reci == 2) {
for (i = iox; i < inx; i++) {
if ((xrcv[k*nx+i] < x0) || (xrcv[k*nx+i] > x1)) continue;
if (reci == 1) ix = NINT((xrcv[k*nx+i]-x0)/dxs);
else ix = NINT((xrcv[k*nx+i]-x0)/dx);
ixpossyn[*npossyn]=ix;
*npossyn += 1;
}
}
} /* end of Nsyn loop */
} /* end of nshots (k) loop */
return;
}
int main(int argc, char **argv)
{
modPar mod;
recPar rec;
srcPar src;
shotPar shot;
rayPar ray;
float *velocity, *slowness, *smooth, *trueslow, **inter;
double t0, t1, t2, tinit, tray, tio;
size_t size;
int nw, n1, ix, iz, ir, ixshot, izshot;
int nt, ntfft, nfreq, ig;
int irec, sbox, ipos, nrx, nrz, nr;
fcoord coordsx, coordgx, Time;
icoord grid, isrc;
float Jr, *ampl, *time, *ttime, *ttime_p, cp_average, *wavelet, dw, dt;
float dxrcv, dzrcv, rdelay, tr, dt_tmp;
segy hdr;
char filetime[1024], fileamp[1024], *method, *file_rcvtime, *file_src;
size_t nwrite, nread;
int verbose;
complex *cmute, *cwav;
FILE *fpt, *fpa, *fpwav, *fprcv;
t0= wallclock_time();
initargs(argc,argv);
requestdoc(0);
if(!getparint("verbose",&verbose)) verbose=0;
if(!getparint("sbox", &sbox)) sbox = 1;
if(!getparstring("method", &method)) method="jesper";
if (!getparfloat("rec_delay",&rdelay)) rdelay=0.0;
getParameters(&mod, &rec, &src, &shot, &ray, verbose);
/* read file_src if file_rcvtime is defined */
if (!getparstring("file_rcvtime",&file_rcvtime)) file_rcvtime=NULL;
if (file_rcvtime != NULL) {
if (!getparstring("file_src",&file_src)) file_src=NULL;
if (!getparfloat("dt",&dt)) dt=0.004;
if (file_src != NULL ) {
fpwav = fopen( file_src, "r" );
assert( fpwav != NULL);
nread = fread( &hdr, 1, TRCBYTES, fpwav );
assert(nread == TRCBYTES);
ntfft = optncr(MAX(hdr.ns, rec.nt));
wavelet = (float *)calloc(ntfft,sizeof(float));
/* read first trace */
nread = fread(wavelet, sizeof(float), hdr.ns, fpwav);
assert (nread == hdr.ns);
fclose(fpwav);
}
else {
ntfft = optncr(rec.nt);
wavelet = (float *)calloc(ntfft,sizeof(float));
wavelet[0] = 1.0;
}
nfreq = ntfft/2+1;
cwav = (complex *)calloc(nfreq,sizeof(complex));
cmute = (complex *)calloc(nfreq,sizeof(complex));
rc1fft(wavelet,cwav,ntfft,-1);
dw = 2*M_PI/(ntfft*dt);
}
/* allocate arrays for model parameters: the different schemes use different arrays */
n1 = mod.nz;
if(!strcmp(method,"fd")) nw = 0;
else nw = ray.smoothwindow;
velocity = (float *)calloc(mod.nx*mod.nz,sizeof(float));
slowness = (float *)calloc((mod.nx+2*nw)*(mod.nz+2*nw),sizeof(float));
trueslow = (float *)calloc(mod.nx*mod.nz,sizeof(float));
if(!strcmp(method,"fd")) {
ttime = (float *)calloc(mod.nx*mod.nz,sizeof(float));
}
/* read velocity and density files */
readModel(mod, velocity, slowness, nw);
/* allocate arrays for wavefield and receiver arrays */
size = shot.n*rec.n;
time = (float *)calloc(size,sizeof(float));
ampl = (float *)calloc(size,sizeof(float));
/* Sinking source and receiver arrays:
If P-velocity==0 the source and receiver
postions are placed deeper until the P-velocity changes.
Setting the option rec.sinkvel only sinks the receiver position
(not the source) and uses the velocity
of the first receiver to sink through to the next layer. */
/* sink receivers to value different than sinkvel */
for (ir=0; ir<rec.n; ir++) {
iz = rec.z[ir];
ix = rec.x[ir];
while(velocity[(ix)*n1+iz] == rec.sinkvel) iz++;
rec.z[ir]=iz+rec.sinkdepth;
rec.zr[ir]=rec.zr[ir]+(rec.z[ir]-iz)*mod.dz;
// rec.zr[ir]=rec.z[ir]*mod.dz;
if (verbose>3) vmess("receiver position %d at grid[ix=%d, iz=%d] = (x=%f z=%f)", ir, ix, rec.z[ir], rec.xr[ir]+mod.x0, rec.zr[ir]+mod.z0);
}
vmess(" - method for ray-tracing = %s", method);
/*
*/
/* sink sources to value different than zero */
for (izshot=0; izshot<shot.nz; izshot++) {
for (ixshot=0; ixshot<shot.nx; ixshot++) {
iz = shot.z[izshot];
ix = shot.x[ixshot];
while(velocity[(ix)*n1+iz] == 0.0) iz++;
shot.z[izshot]=iz+src.sinkdepth;
}
}
if (verbose>3) writeSrcRecPos(&mod, &rec, &src, &shot);
/* smooth slowness grid */
grid.x = mod.nx;
grid.z = mod.nz;
grid.y = 1;
if ( nw != 0 ) { /* smooth slowness */
smooth = (float *)calloc(grid.x*grid.z,sizeof(float));
applyMovingAverageFilter(slowness, grid, nw, 2, smooth);
memcpy(slowness,smooth,grid.x*grid.z*sizeof(float));
free(smooth);
}
/* prepare output file and headers */
strcpy(filetime, rec.file_rcv);
name_ext(filetime, "_time");
fpt = fopen(filetime, "w");
assert(fpt != NULL);
if (ray.geomspread) {
strcpy(fileamp, rec.file_rcv);
name_ext(fileamp, "_amp");
fpa = fopen(fileamp, "w");
assert(fpa != NULL);
}
if (file_rcvtime != NULL) {
fprcv = fopen(file_rcvtime, "w");
assert(fprcv != NULL);
}
memset(&hdr,0,sizeof(hdr));
hdr.scalco = -1000;
hdr.scalel = -1000;
hdr.trid = 0;
t1=wallclock_time();
tinit = t1-t0;
tray=0.0;
tio=0.0;
/* Outer loop over number of shots */
for (izshot=0; izshot<shot.nz; izshot++) {
for (ixshot=0; ixshot<shot.nx; ixshot++) {
t2=wallclock_time();
if (verbose) {
vmess("Modeling source %d at gridpoints ix=%d iz=%d", (izshot*shot.n)+ixshot, shot.x[ixshot], shot.z[izshot]);
vmess(" which are actual positions x=%.2f z=%.2f", mod.x0+mod.dx*shot.x[ixshot], mod.z0+mod.dz*shot.z[izshot]);
vmess("Receivers at gridpoint x-range ix=%d - %d", rec.x[0], rec.x[rec.n-1]);
vmess(" which are actual positions x=%.2f - %.2f", mod.x0+rec.xr[0], mod.x0+rec.xr[rec.n-1]);
vmess("Receivers at gridpoint z-range iz=%d - %d", rec.z[0], rec.z[rec.n-1]);
vmess(" which are actual positions z=%.2f - %.2f", mod.z0+rec.zr[0], mod.z0+rec.zr[rec.n-1]);
}
coordsx.x = shot.x[ixshot]*mod.dx;
coordsx.z = shot.z[izshot]*mod.dz;
coordsx.y = 0;
t1=wallclock_time();
tio += t1-t2;
if (!strcmp(method,"jesper")) {
#pragma omp parallel for default(shared) \
private (coordgx,irec,Time,Jr)
for (irec=0; irec<rec.n; irec++) {
coordgx.x=rec.xr[irec];
coordgx.z=rec.zr[irec];
coordgx.y = 0;
getWaveParameter(slowness, grid, mod.dx, coordsx, coordgx, ray, &Time, &Jr);
time[((izshot*shot.nx)+ixshot)*rec.n + irec] = Time.x + Time.y + 0.5*Time.z;
ampl[((izshot*shot.nx)+ixshot)*rec.n + irec] = Jr;
if (verbose>4) vmess("JS: shot=%f,%f receiver at %f,%f T0=%f T1=%f T2=%f Jr=%f",coordsx.x, coordsx.z, coordgx.x, coordgx.z, Time.x, Time.y, Time.z, Jr);
}
}
else if(!strcmp(method,"fd")) {
int mzrcv;
isrc.x = shot.x[ixshot];
isrc.y = 0;
isrc.z = shot.z[izshot];
mzrcv = 0;
for (irec = 0; irec < rec.n; irec++) mzrcv = MAX(rec.z[irec], mzrcv);
vidale(ttime,slowness,&isrc,grid,mod.dx,sbox, mzrcv);
for (irec=0; irec<rec.n; irec++) {
coordgx.x=mod.x0+rec.xr[irec];
coordgx.z=mod.z0+rec.zr[irec];
coordgx.y = 0;
ipos = ((izshot*shot.nx)+ixshot)*rec.n + irec;
time[ipos] = ttime[rec.z[irec]*mod.nx+rec.x[irec]];
/* compute average velocity between source and receiver */
nrx = (rec.x[irec]-isrc.x);
nrz = (rec.z[irec]-isrc.z);
nr = abs(nrx) + abs(nrz);
cp_average = 0.0;
for (ir=0; ir<nr; ir++) {
ix = isrc.x + floor((ir*nrx)/nr);
iz = isrc.z + floor((ir*nrz)/nr);
//fprintf(stderr,"ir=%d ix=%d iz=%d velocity=%f\n", ir, ix, iz, velocity[ix*mod.nz+iz]);
cp_average += velocity[ix*mod.nz+iz];
}
cp_average = cp_average/((float)nr);
ampl[ipos] = sqrt(time[ipos]*cp_average);
if (verbose>4) vmess("FD: shot=%f,%f receiver at %f(%d),%f(%d) T=%e V=%f Ampl=%f",coordsx.x, coordsx.z, coordgx.x, rec.x[irec], coordgx.z, rec.z[irec], time[ipos], cp_average, ampl[ipos]);
}
}
t2=wallclock_time();
tray += t2-t1;
hdr.sx = 1000*(mod.x0+mod.dx*shot.x[ixshot]);
hdr.sdepth = 1000*(mod.z0+mod.dz*shot.z[izshot]);
hdr.selev = (int)(-1000.0*(mod.z0+mod.dz*shot.z[izshot]));
hdr.fldr = ((izshot*shot.nx)+ixshot)+1;
hdr.tracl = ((izshot*shot.nx)+ixshot)+1;
hdr.tracf = ((izshot*shot.nx)+ixshot)+1;
hdr.ntr = shot.n;
hdr.dt = (unsigned short)1;
hdr.trwf = shot.n;
hdr.ns = rec.n;
//hdr.d1 = (rec.x[1]-rec.x[0])*mod.dx; // discrete
hdr.d1 = (rec.xr[1]-rec.xr[0]);
hdr.f1 = mod.x0+rec.x[0]*mod.dx;
hdr.d2 = (shot.x[MIN(shot.n-1,1)]-shot.x[0])*mod.dx;
hdr.f2 = mod.x0+shot.x[0]*mod.dx;
dt_tmp = (fabs(hdr.d1*((float)hdr.scalco)));
hdr.dt = (unsigned short)dt_tmp;
nwrite = fwrite( &hdr, 1, TRCBYTES, fpt);
assert(nwrite == TRCBYTES);
nwrite = fwrite( &time[((izshot*shot.nx)+ixshot)*rec.n], sizeof(float), rec.n, fpt);
assert(nwrite == rec.n);
fflush(fpt);
if (ray.geomspread) {
nwrite = fwrite( &hdr, 1, TRCBYTES, fpa);
assert(nwrite == TRCBYTES);
nwrite = fwrite( &l[((izshot*shot.nx)+ixshot)*rec.n], sizeof(float), rec.n, fpa);
assert(nwrite == rec.n);
fflush(fpa);
}
if (file_rcvtime != NULL) {
hdr.ns = rec.nt;
hdr.trwf = rec.n;
hdr.ntr = ((izshot*shot.nx)+ixshot+1)*rec.n;
hdr.dt = dt*1000000;
hdr.d1 = dt;
hdr.f1 = 0.0;
hdr.d2 = (rec.xr[1]-rec.xr[0]);
hdr.f2 = mod.x0+rec.x[0]*mod.dx;
for (irec=0; irec<rec.n; irec++) {
ipos = ((izshot*shot.nx)+ixshot)*rec.n + irec;
hdr.tracf = irec+1;
hdr.tracl = ((izshot*shot.nx)+ixshot*shot.nz)+irec+1;
hdr.gx = 1000*(mod.x0+rec.xr[irec]);
hdr.offset = (rec.xr[irec]-shot.x[ixshot]*mod.dx);
hdr.gelev = (int)(-1000*(mod.z0+rec.zr[irec]));
tr = time[ipos]+rdelay;
for (ig=0; ig<nfreq; ig++) {
cmute[ig].r = (cwav[ig].r*cos(ig*dw*tr-M_PI/4.0)-cwav[ig].i*sin(ig*dw*tr-M_PI/4.0))/(ntfft*ampl[ipos]);
cmute[ig].i = (cwav[ig].i*cos(ig*dw*tr-M_PI/4.0)+cwav[ig].r*sin(ig*dw*tr-M_PI/4.0))/(ntfft*ampl[ipos]);
}
cr1fft(cmute,wavelet,ntfft,-1);
nwrite = fwrite( &hdr, 1, TRCBYTES, fprcv);
nwrite = fwrite( wavelet, sizeof(float), rec.nt, fprcv );
}
}
t1=wallclock_time();
tio += t1-t2;
} /* end of ixshot loop */
} /* end of loop over number of shots */
fclose(fpt);
if (file_rcvtime != NULL) fclose(fprcv);
if (ray.geomspread) fclose(fpa);
t1= wallclock_time();
if (verbose) {
vmess("*******************************************");
vmess("************* runtime info ****************");
vmess("*******************************************");
vmess("Total compute time ray-tracing = %.2f s.", t1-t0);
vmess(" - intializing arrays and model = %.3f", tinit);
vmess(" - ray tracing = %.3f", tray);
vmess(" - writing data to file = %.3f", tio);
}
/* free arrays */
initargs(argc,argv); /* this will free the arg arrays declared */
free(velocity);
free(slowness);
return 0;
}
int main (int argc, char **argv)
{
FILE *fp_in, *fp_out;
char *fin, *fout, *ptr, fbegin[100], fend[100], fins[100], fin2[100], numb1[100];
float *indata, *outdata, *rtrace, fz, fx;
float dt, dx, t0, x0, xmin, xmax, sclsxgx, dt2, dx2, t02, x02, xmin2, xmax2, sclsxgx2, dxrcv, dzrcv;
int nshots, nt, nx, ntraces, nshots2, nt2, nx2, ntraces2, ix, it, is, ir, pos, ifile, file_det, nxs, nzs;
int xcount, numb, dnumb, ret, nzmax, verbose;
segy *hdr_in, *hdr_out;
initargs(argc, argv);
requestdoc(1);
if (!getparstring("file_in", &fin)) fin = NULL;
if (!getparstring("file_out", &fout)) fout = "out.su";
if (!getparint("numb", &numb)) numb=0;
if (!getparint("dnumb", &dnumb)) dnumb=0;
if (!getparint("nzmax", &nzmax)) nzmax=0;
if (!getparint("verbose", &verbose)) verbose=0;
if (fin == NULL) verr("Incorrect downgoing input");
if (dnumb < 1) dnumb = 1;
sprintf(numb1,"%d",numb);
ptr = strstr(fin,numb1);
pos = ptr - fin + 1;
sprintf(fbegin,"%*.*s", pos-1, pos-1, fin);
sprintf(fend,"%s", fin+pos);
file_det = 1;
nzs=0;
while (file_det) {
sprintf(fins,"%d",nzs*dnumb+numb);
sprintf(fin,"%s%s%s",fbegin,fins,fend);
fp_in = fopen(fin, "r");
if (fp_in == NULL) {
if (nzs == 0) {
verr("error on opening basefile=%s", fin);
}
else if (nzs == 1) {
vmess("1 file detected");
}
else {
vmess("%d files detected",nzs);
file_det = 0;
break;
}
}
fclose(fp_in);
nzs++;
if (nzmax!=0 && nzs == nzmax) {
vmess("%d files detected",nzs);
file_det = 0;
break;
}
}
sprintf(fins,"%d",numb);
sprintf(fin2,"%s%s%s",fbegin,fins,fend);
nshots = 0;
getFileInfo(fin2, &nt, &nx, &nshots, &dt, &dx, &t0, &x0, &xmin, &xmax, &sclsxgx, &ntraces);
sprintf(fins,"%d",numb+dnumb);
sprintf(fin2,"%s%s%s",fbegin,fins,fend);
nshots = 0;
getFileInfo(fin2, &nt2, &nx2, &nshots2, &dt2, &dx2, &t02, &x02, &xmin2, &xmax2, &sclsxgx2, &ntraces2);
dxrcv=dx*1000;
dzrcv=t02-t0;
if (nshots==0) nshots=1;
nxs = ntraces;
// ngath zijn het aantal schoten
hdr_out = (segy *)calloc(nxs,sizeof(segy));
outdata = (float *)calloc(nxs*nzs,sizeof(float));
hdr_in = (segy *)calloc(nxs,sizeof(segy));
indata = (float *)calloc(nxs,sizeof(float));
readSnapData(fin2, &indata[0], &hdr_in[0], nshots, nxs, nt, 0, nxs, 0, nt);
nshots = hdr_in[nxs-1].fldr;
nxs = hdr_in[nxs-1].tracf;
for (ir = 0; ir < nzs; ir++) {
if (verbose) vmess("Depth:%d out of %d",ir+1,nzs);
sprintf(fins,"%d",ir*dnumb+numb);
sprintf(fin2,"%s%s%s",fbegin,fins,fend);
fp_in = fopen(fin2, "r");
if (fp_in == NULL) {
verr("Error opening file");
}
fclose(fp_in);
readSnapData(fin2, &indata[0], &hdr_in[0], nshots, nxs, nt, 0, nxs, 0, nt);
if (ir==0) fz=hdr_in[0].f1; fx=hdr_in[0].f2;
if (ir==1) dzrcv=hdr_in[0].f1-fz;
for (is = 0; is < nxs; is++) {
for (it = 0; it < nshots; it++) {
outdata[it*nxs*nzs+is*nzs+ir] = indata[it*nxs+is];
}
}
}
free(indata);
fp_out = fopen(fout, "w+");
for (is = 0; is < nshots; is++) {
for (ix = 0; ix < nxs; ix++) {
hdr_out[ix].fldr = is+1;
hdr_out[ix].tracl = is*nxs+ix+1;
hdr_out[ix].tracf = ix+1;
hdr_out[ix].scalco = -1000;
hdr_out[ix].scalel = -1000;
hdr_out[ix].sdepth = hdr_in[0].sdepth;
hdr_out[ix].trid = 1;
hdr_out[ix].ns = nzs;
hdr_out[ix].trwf = nxs;
hdr_out[ix].ntr = hdr_out[ix].fldr*hdr_out[ix].trwf;
hdr_out[ix].f1 = fz;
hdr_out[ix].f2 = fx;
hdr_out[ix].dt = dt*(1E6);
hdr_out[ix].d1 = dzrcv;
hdr_out[ix].d2 = dxrcv;
hdr_out[ix].sx = (int)roundf(fx + (ix*hdr_out[ix].d2));
hdr_out[ix].gx = (int)roundf(fx + (ix*hdr_out[ix].d2));
hdr_out[ix].offset = (hdr_out[ix].gx - hdr_out[ix].sx)/1000.0;
}
ret = writeData(fp_out, &outdata[is*nxs*nzs], hdr_out, nzs, nxs);
if (ret < 0 ) verr("error on writing output file.");
}
fclose(fp_out);
return 0;
}
int main(int argc, char **argv)
{
FILE *fp_in, *fp_out;
int ret, verbose, i, j;
size_t size, nread;
int n1, n2, n3, stype, num;
float d1, d2, d3;
double *ddata;
float *data;
char *file_in, *file_out;
segy *hdrs;
initargs(argc, argv);
requestdoc(1);
if(!getparint("verbose", &verbose)) verbose = 0;
if(!getparstring("file_in", &file_in)) {
if (verbose) vwarn("parameter file_in not found, assume pipe");
file_in = NULL;
}
if(!getparstring("file_out", &file_out)){
if (verbose) vwarn("parameter file_out not found, assume pipe");
file_out = NULL;
}
if(!getparint("stype", &stype)) stype=1;
if(!getparint("n1", &n1)) verr("n1 must be given");
if(!getparint("n2", &n2)) verr("n2 must be given");
if(!getparint("n3", &n3)) n3=1;
if(!getparfloat("d1", &d1)) d1=1.0;
if(!getparfloat("d2", &d2)) d2=1.0;
if(!getparfloat("d3", &d3)) d3=1.0;
/* Opening input file */
if (file_in != NULL) fp_in = fopen(file_in, "r");
else fp_in=stdin;
if (fp_in == NULL) verr("error on opening input file_in=%s", file_in);
size = n1 * n2;
ddata = (double *)malloc(size*sizeof(double)*stype);
hdrs = (segy *) calloc(n2,sizeof(segy));
if (ddata == NULL || hdrs==NULL )
verr("memory allocation error for input data");
for (i = 0; i < n2; i++) {
hdrs[i].ns = stype*n1;
hdrs[i].f1 = 0.0;
hdrs[i].f2 = 0.0;
hdrs[i].d1 = d1;
hdrs[i].d2 = d2;
hdrs[i].dt = d1*1e+6;
hdrs[i].tracl = i+1;
if (stype==2) {
hdrs[i].trid=FUNPACKNYQ;
}
else {
hdrs[i].trid=TREAL;
}
}
nread = fread(&ddata[0], sizeof(double), size*stype, fp_in);
if (nread == 0) {
fclose(fp_in);
if (verbose) verr("error in reading data of file %s", file_in);
}
/* allocate data array */
data = (float *)malloc(stype*size*sizeof(float));
if (data == NULL) verr("memory allocation error for data");
/* create output file */
if (file_out==NULL) fp_out = stdout;
else {
fp_out = fopen(file_out, "w+");
if (fp_out==NULL) verr("error on creating output file");
}
/* loop for processing all data gathers */
num = 1;
while (n3 > 0) {
/* convert data and fill headers */
for (i = 0; i < n2; i++) {
hdrs[i].fldr = num;
for (j = 0; j < stype*n1; j++) {
data[i*stype*n1+j] = (float)ddata[i*stype*n1+j];
}
}
/* write result to output file */
ret = writeData(fp_out, data, hdrs, stype*n1, n2);
if (ret < 0 ) verr("error on writing output file.");
nread = fread(ddata, sizeof(double), size*stype, fp_in);
if (nread == 0) {
fclose(fp_in);
fclose(fp_out);
if (verbose) vmess("end of data reached");
free(hdrs);
free(data);
free(ddata);
return 0;
}
n3--;
num++;
}
return 0;
}
long defineSource3D(wavPar wav, srcPar src, modPar mod, recPar rec, float **src_nwav, long reverse, long verbose)
{
FILE *fp;
size_t nread;
long optn, nfreq, i, j, k, iwmax, tracesToDo;
long iw, n1, namp, optnscale, nfreqscale;
float scl, d1, df, deltom, om, tshift;
float amp1, amp2, amp3;
float *trace, maxampl, scale;
complex *ctrace, tmp;
segy hdr;
scale = 1.0;
n1 = wav.ns;
if (wav.random) { /* initialize random sequence */
srand48(wav.seed+1);
seedCMWC4096();
for (i=0; i<8192; i++) {
amp1 = dcmwc4096();
}
}
else {
/* read first header and last byte to get file size */
fp = fopen( wav.file_src, "r" );
assert( fp != NULL);
nread = fread( &hdr, 1, TRCBYTES, fp );
assert(nread == TRCBYTES);
/* read all traces */
tracesToDo = wav.nx;
i = 0;
while (tracesToDo) {
memset(&src_nwav[i][0],0,wav.nt*sizeof(float));
nread = fread(&src_nwav[i][0], sizeof(float), hdr.ns, fp);
assert (nread == hdr.ns);
nread = fread( &hdr, 1, TRCBYTES, fp );
if (nread==0) break;
tracesToDo--;
i++;
}
fclose(fp);
}
optn = loptncr(n1);
nfreq = optn/2 + 1;
if (wav.nt != wav.ns) {
vmess("Sampling in wavelet is %e while for modeling is set to %e", wav.ds, mod.dt);
vmess("Wavelet sampling will be FFT-interpolated to sampling of modeling");
vmess("file_src Nt=%li sampling after interpolation=%li", wav.ns, wav.nt);
optnscale = wav.nt;
nfreqscale = optnscale/2 + 1;
}
else {
optnscale = optn;
nfreqscale = optnscale/2 + 1;
}
// fprintf(stderr,"define S optn=%li ns=%li %e nt=%li %e\n", optn, wav.ns, wav.ds, optnscale, wav.dt);
ctrace = (complex *)calloc(nfreqscale,sizeof(complex));
trace = (float *)calloc(optnscale,sizeof(float));
df = 1.0/(optn*wav.ds);
deltom = 2.*M_PI*df;
scl = 1.0/optn;
iwmax = nfreq;
for (i=0; i<wav.nx; i++) {
if (wav.random) {
randomWavelet3D(wav, src, &src_nwav[i][0], src.tbeg[i], src.tend[i], verbose);
}
else {
memset(&ctrace[0].r,0,nfreqscale*sizeof(complex));
memset(&trace[0],0,optnscale*sizeof(float));
memcpy(&trace[0],&src_nwav[i][0],n1*sizeof(float));
rc1fft(trace,ctrace,optn,-1);
/* Scale source from file with -j/w (=1/(jw)) for volume source injections
no scaling is applied for volume source injection rates */
if (src.injectionrate==0) {
for (iw=1;iw<iwmax;iw++) {
om = 1.0/(deltom*iw);
tmp.r = om*ctrace[iw].i;
tmp.i = -om*ctrace[iw].r;
ctrace[iw].r = tmp.r;
ctrace[iw].i = tmp.i;
}
}
if (src.type < 6) { // shift wavelet with +1/2 DeltaT due to staggered in time
tshift=-(0.5*rec.skipdt+1.5)*wav.dt;
for (iw=1;iw<iwmax;iw++) {
om = deltom*iw*tshift;
tmp.r = ctrace[iw].r*cos(-om) - ctrace[iw].i*sin(-om);
tmp.i = ctrace[iw].i*cos(-om) + ctrace[iw].r*sin(-om);
ctrace[iw].r = tmp.r;
ctrace[iw].i = tmp.i;
}
}
/* zero frequency iw=0 set to 0 if the next sample has amplitude==0*/
amp1 = sqrt(ctrace[1].r*ctrace[1].r+ctrace[1].i*ctrace[1].i);
if (amp1 == 0.0) {
ctrace[0].r = ctrace[0].i = 0.0;
}
else { /* stabilization for w=0: extrapolate amplitudes to 0 */
amp2 = sqrt(ctrace[2].r*ctrace[2].r+ctrace[2].i*ctrace[2].i);
amp3 = sqrt(ctrace[3].r*ctrace[3].r+ctrace[3].i*ctrace[3].i);
ctrace[0].r = amp1+(2.0*(amp1-amp2)-(amp2-amp3));
ctrace[0].i = 0.0;
if (ctrace[1].r < 0.0) {
ctrace[0].r *= -1.0;
}
}
for (iw=iwmax;iw<nfreqscale;iw++) {
ctrace[iw].r = 0.0;
ctrace[iw].i = 0.0;
}
memset(&trace[0],0,optnscale*sizeof(float));
cr1fft(ctrace,trace,optnscale,1);
/* avoid a (small) spike in the last sample
this is done to avoid diffraction from last wavelet sample
which will act as a pulse */
maxampl=0.0;
if (reverse) {
for (j=0; j<wav.nt; j++) {
src_nwav[i][j] = scl*(trace[wav.nt-j-1]-trace[0]);
maxampl = MAX(maxampl,fabs(src_nwav[i][j]));
}
}
else {
for (j=0; j<wav.nt; j++) {
src_nwav[i][j] = scl*(trace[j]-trace[wav.nt-1]);
maxampl = MAX(maxampl,fabs(src_nwav[i][j]));
}
}
if (verbose > 3) vmess("Wavelet sampling (FFT-interpolated) done for trace %li", i);
}
}
/* set values smaller than 1e-5 maxampl to zero */
maxampl *= 1e-5;
for (i=0; i<wav.nx; i++) {
for (j=0; j<wav.nt; j++) {
if (fabs(src_nwav[i][j]) < maxampl) src_nwav[i][j] = 0.0;
}
}
free(ctrace);
free(trace);
/* use random amplitude gain factor for each source */
if (src.amplitude > 0.0) {
namp=wav.nx*10;
trace = (float *)calloc(2*namp,sizeof(float));
for (i=0; i<wav.nx; i++) {
if (src.distribution) {
scl = gaussGen()*src.amplitude;
k = (long)MAX(MIN(namp*(scl+5*src.amplitude)/(10*src.amplitude),namp-1),0);
d1 = 10.0*src.amplitude/(namp-1);
}
else {
scl = (float)(drand48()-0.5)*src.amplitude;
k = (long)MAX(MIN(namp*(scl+1*src.amplitude)/(2*src.amplitude),namp-1),0);
d1 = 2.0*src.amplitude/(namp-1);
}
trace[k] += 1.0;
/* trace[i] = scl; */
if (wav.random) n1 = wav.nsamp[i];
else n1 = wav.nt;
for (j=0; j<n1; j++) {
src_nwav[i][j] *= scl;
}
}
if (verbose>2) writesufile3D("src_ampl.su", trace, namp, 1, -5*src.amplitude, 0.0, d1, 1);
free(trace);
}
if (verbose>3) writesufilesrcnwav3D("src_nwav.su", src_nwav, wav, wav.nt, wav.nx, 0.0, 0.0, wav.dt, 1);
return 0;
}
int main(int argc, char **argv)
{
modPar mod;
recPar rec;
snaPar sna;
wavPar wav;
srcPar src;
bndPar bnd;
shotPar shot;
float **src_nwav;
float *rox, *roz, *l2m, *lam, *mul;
float *tss, *tes, *tep, *p, *q, *r;
float *vx, *vz, *tzz, *txz, *txx;
float *rec_vx, *rec_vz, *rec_p;
float *rec_txx, *rec_tzz, *rec_txz;
float *rec_pp, *rec_ss;
float *rec_udp, *rec_udvz;
float *beam_vx, *beam_vz, *beam_p;
float *beam_txx, *beam_tzz, *beam_txz;
float *beam_pp, *beam_ss;
float sinkvel;
double t0, t1, t2, t3, tt, tinit;
size_t size, sizem, nsamp, memsize;
int n1, ix, iz, ir, ishot, i;
int ioPx, ioPz;
int it0, it1, its, it, fileno, isam;
int ixsrc, izsrc;
int verbose;
t0= wallclock_time();
initargs(argc,argv);
requestdoc(0);
if (!getparint("verbose",&verbose)) verbose=0;
getParameters(&mod, &rec, &sna, &wav, &src, &shot, &bnd, verbose);
/* allocate arrays for model parameters: the different schemes use different arrays */
n1 = mod.naz;
sizem=mod.nax*mod.naz;
rox = (float *)calloc(sizem,sizeof(float));
roz = (float *)calloc(sizem,sizeof(float));
l2m = (float *)calloc(sizem,sizeof(float));
if (mod.ischeme==2) {
tss = (float *)calloc(sizem,sizeof(float));
tep = (float *)calloc(sizem,sizeof(float));
q = (float *)calloc(sizem,sizeof(float));
}
if (mod.ischeme>2) {
lam = (float *)calloc(sizem,sizeof(float));
mul = (float *)calloc(sizem,sizeof(float));
}
if (mod.ischeme==4) {
tss = (float *)calloc(sizem,sizeof(float));
tes = (float *)calloc(sizem,sizeof(float));
tep = (float *)calloc(sizem,sizeof(float));
r = (float *)calloc(sizem,sizeof(float));
p = (float *)calloc(sizem,sizeof(float));
q = (float *)calloc(sizem,sizeof(float));
}
/* read velocity and density files */
readModel(mod, bnd, rox, roz, l2m, lam, mul, tss, tes, tep);
/* read and/or define source wavelet(s) */
/* Using a random source, which can have a random length
for each source position, a pointer array with variable
length (wav.nsamp[i]) is used.
The total length of all the source lengths together is wav.nst */
if (wav.random) {
src_nwav = (float **)calloc(wav.nx,sizeof(float *));
src_nwav[0] = (float *)calloc(wav.nst,sizeof(float));
assert(src_nwav[0] != NULL);
nsamp = 0;
for (i=0; i<wav.nx; i++) {
src_nwav[i] = (float *)(src_nwav[0] + nsamp);
nsamp += wav.nsamp[i];
}
}
else {
src_nwav = (float **)calloc(wav.nx,sizeof(float *));
src_nwav[0] = (float *)calloc(wav.nt*wav.nx,sizeof(float));
assert(src_nwav[0] != NULL);
for (i=0; i<wav.nx; i++) {
src_nwav[i] = (float *)(src_nwav[0] + wav.nt*i);
}
}
defineSource(wav, src, src_nwav, mod.grid_dir, verbose);
/* allocate arrays for wavefield and receiver arrays */
vx = (float *)calloc(sizem,sizeof(float));
vz = (float *)calloc(sizem,sizeof(float));
tzz = (float *)calloc(sizem,sizeof(float)); /* =P field for acoustic */
if (mod.ischeme>2) {
txz = (float *)calloc(sizem,sizeof(float));
txx = (float *)calloc(sizem,sizeof(float));
}
if (rec.type.vz) rec_vz = (float *)calloc(size,sizeof(float));
size = rec.n*rec.nt;
if (rec.type.vz) rec_vz = (float *)calloc(size,sizeof(float));
if (rec.type.vx) rec_vx = (float *)calloc(size,sizeof(float));
if (rec.type.p) rec_p = (float *)calloc(size,sizeof(float));
if (rec.type.txx) rec_txx = (float *)calloc(size,sizeof(float));
if (rec.type.tzz) rec_tzz = (float *)calloc(size,sizeof(float));
if (rec.type.txz) rec_txz = (float *)calloc(size,sizeof(float));
if (rec.type.pp) rec_pp = (float *)calloc(size,sizeof(float));
if (rec.type.ss) rec_ss = (float *)calloc(size,sizeof(float));
if (rec.type.ud) { /* get velcity and density at first receiver location */
ir = mod.ioZz + rec.z[0]+(rec.x[0]+mod.ioZx)*n1;
rec.rho = mod.dt/(mod.dx*roz[ir]);
rec.cp = sqrt(l2m[ir]*(roz[ir]))*mod.dx/mod.dt;
rec_udvz = (float *)calloc(mod.nax*rec.nt,sizeof(float));
rec_udp = (float *)calloc(mod.nax*rec.nt,sizeof(float));
}
if(sna.beam) {
size = sna.nz*sna.nx;
if (sna.type.vz) beam_vz = (float *)calloc(size,sizeof(float));
if (sna.type.vx) beam_vx = (float *)calloc(size,sizeof(float));
if (sna.type.p) beam_p = (float *)calloc(size,sizeof(float));
if (sna.type.txx) beam_txx = (float *)calloc(size,sizeof(float));
if (sna.type.tzz) beam_tzz = (float *)calloc(size,sizeof(float));
if (sna.type.txz) beam_txz = (float *)calloc(size,sizeof(float));
if (sna.type.pp) beam_pp = (float *)calloc(size,sizeof(float));
if (sna.type.ss) beam_ss = (float *)calloc(size,sizeof(float));
}
t1= wallclock_time();
if (verbose) {
tinit = t1-t0;
vmess("*******************************************");
vmess("************* runtime info ****************");
vmess("*******************************************");
vmess("CPU time for intializing arrays and model = %f", tinit);
}
/* Sinking source and receiver arrays:
If P-velocity==0 the source and receiver
postions are placed deeper until the P-velocity changes.
The free-surface position is stored in bnd.surface[ix].
Setting the option rec.sinkvel only sinks the receiver position
(not the source) and uses the velocity
of the first receiver to sink through to the next layer. */
ioPx=mod.ioPx;
ioPz=mod.ioPz;
if (bnd.lef==4 || bnd.lef==2) ioPx += bnd.ntap;
if (bnd.top==4 || bnd.top==2) ioPz += bnd.ntap;
if (rec.sinkvel) sinkvel=l2m[(rec.x[0]+ioPx)*n1+rec.z[0]+ioPz];
else sinkvel = 0.0;
/* sink receivers to value different than sinkvel */
for (ir=0; ir<rec.n; ir++) {
iz = rec.z[ir];
ix = rec.x[ir];
while(l2m[(ix+ioPx)*n1+iz+ioPz] == sinkvel) iz++;
rec.z[ir]=iz+rec.sinkdepth;
rec.zr[ir]=rec.zr[ir]+(rec.z[ir]-iz)*mod.dz;
// rec.zr[ir]=rec.z[ir]*mod.dz;
if (verbose>3) vmess("receiver position %d at grid[ix=%d, iz=%d] = (x=%f z=%f)", ir, ix+ioPx, rec.z[ir]+ioPz, rec.xr[ir]+mod.x0, rec.zr[ir]+mod.z0);
}
/* sink sources to value different than zero */
for (ishot=0; ishot<shot.n; ishot++) {
iz = shot.z[ishot];
ix = shot.x[ishot];
while(l2m[(ix+ioPx)*n1+iz+ioPz] == 0.0) iz++;
shot.z[ishot]=iz+src.sinkdepth;
}
/* scan for free surface boundary in case it has a topography */
for (ix=0; ix<mod.nx; ix++) {
iz = ioPz;
while(l2m[(ix+ioPx)*n1+iz] == 0.0) iz++;
bnd.surface[ix+ioPx] = iz;
if ((verbose>3) && (iz != ioPz)) vmess("Topgraphy surface x=%.2f z=%.2f", mod.x0+mod.dx*ix, mod.z0+mod.dz*(iz-ioPz));
}
for (ix=0; ix<ioPx; ix++) {
bnd.surface[ix] = bnd.surface[ioPx];
}
for (ix=ioPx+mod.nx; ix<mod.iePx; ix++) {
bnd.surface[ix] = bnd.surface[mod.iePx-1];
}
if (verbose>3) writeSrcRecPos(&mod, &rec, &src, &shot);
/* Outer loop over number of shots */
for (ishot=0; ishot<shot.n; ishot++) {
izsrc = shot.z[ishot];
ixsrc = shot.x[ishot];
fileno= 0;
memset(vx,0,sizem*sizeof(float));
memset(vz,0,sizem*sizeof(float));
memset(tzz,0,sizem*sizeof(float));
if (mod.ischeme==2) {
memset(q,0,sizem*sizeof(float));
}
if (mod.ischeme>2) {
memset(txz,0,sizem*sizeof(float));
memset(txx,0,sizem*sizeof(float));
}
if (mod.ischeme==4) {
memset(r,0,sizem*sizeof(float));
memset(p,0,sizem*sizeof(float));
memset(q,0,sizem*sizeof(float));
}
if (verbose) {
if (!src.random) {
vmess("Modeling source %d at gridpoints ix=%d iz=%d", ishot, shot.x[ishot], shot.z[ishot]);
vmess(" which are actual positions x=%.2f z=%.2f", mod.x0+mod.dx*shot.x[ishot], mod.z0+mod.dz*shot.z[ishot]);
}
vmess("Receivers at gridpoint x-range ix=%d - %d", rec.x[0], rec.x[rec.n-1]);
vmess(" which are actual positions x=%.2f - %.2f", mod.x0+rec.xr[0], mod.x0+rec.xr[rec.n-1]);
vmess("Receivers at gridpoint z-range iz=%d - %d", rec.z[0], rec.z[rec.n-1]);
vmess(" which are actual positions z=%.2f - %.2f", mod.z0+rec.zr[0], mod.z0+rec.zr[rec.n-1]);
}
if (mod.grid_dir) { /* reverse time modeling */
it0=-mod.nt+1;
it1=0;
its=-1;
it0=0;
it1=mod.nt;
its=1;
}
else {
it0=0;
it1=mod.nt;
its=1;
}
/* Main loop over the number of time steps */
for (it=it0; it<it1; it++) {
#pragma omp parallel default (shared) \
shared (rox, roz, l2m, lam, mul, txx, txz, tzz, vx, vz) \
shared (tss, tep, tes, r, q, p) \
shared (tinit, it0, it1, its) \
shared(beam_vx, beam_vz, beam_txx, beam_tzz, beam_txz, beam_p, beam_pp, beam_ss) \
shared(rec_vx, rec_vz, rec_txx, rec_tzz, rec_txz, rec_p, rec_pp, rec_ss) \
private (tt, t2, t3) \
shared (shot, bnd, mod, src, wav, rec, ixsrc, izsrc, it, src_nwav, verbose)
{
switch ( mod.ischeme ) {
case 1 : /* Acoustic FD kernel */
if (mod.iorder==2) {
acoustic2(mod, src, wav, bnd, it, ixsrc, izsrc, src_nwav,
vx, vz, tzz, rox, roz, l2m, verbose);
}
else if (mod.iorder==4) {
if (mod.sh) {
acousticSH4(mod, src, wav, bnd, it, ixsrc, izsrc, src_nwav,
vx, vz, tzz, rox, roz, l2m, verbose);
}
else {
acoustic4(mod, src, wav, bnd, it, ixsrc, izsrc, src_nwav,
vx, vz, tzz, rox, roz, l2m, verbose);
}
}
else if (mod.iorder==6) {
acoustic6(mod, src, wav, bnd, it, ixsrc, izsrc, src_nwav,
vx, vz, tzz, rox, roz, l2m, verbose);
}
break;
case 2 : /* Visco-Acoustic FD kernel */
viscoacoustic4(mod, src, wav, bnd, it, ixsrc, izsrc, src_nwav,
vx, vz, tzz, rox, roz, l2m, tss, tep, q, verbose);
break;
case 3 : /* Elastic FD kernel */
if (mod.iorder==4) {
elastic4(mod, src, wav, bnd, it, ixsrc, izsrc, src_nwav,
vx, vz, tzz, txx, txz, rox, roz, l2m, lam, mul, verbose);
}
else if (mod.iorder==6) {
elastic6(mod, src, wav, bnd, it, ixsrc, izsrc, src_nwav,
vx, vz, tzz, txx, txz, rox, roz, l2m, lam, mul, verbose);
}
break;
case 4 : /* Visco-Elastic FD kernel */
viscoelastic4(mod, src, wav, bnd, it, ixsrc, izsrc, src_nwav,
vx, vz, tzz, txx, txz, rox, roz, l2m, lam, mul,
tss, tep, tes, r, q, p, verbose);
break;
}
/* write samples to file if rec.nt samples are calculated */
#pragma omp master
{
if ( (((it-rec.delay) % rec.skipdt)==0) && (it >= rec.delay) ) {
int writeToFile, itwritten;
writeToFile = ! ( (((it-rec.delay)/rec.skipdt)+1)%rec.nt );
itwritten = fileno*(rec.nt)*rec.skipdt;
isam = (it-rec.delay-itwritten)/rec.skipdt;
/* store time at receiver positions */
getRecTimes(mod, rec, bnd, it, isam, vx, vz, tzz, txx, txz,
rec_vx, rec_vz, rec_txx, rec_tzz, rec_txz,
rec_p, rec_pp, rec_ss, rec_udp, rec_udvz, verbose);
/* at the end of modeling a shot, write receiver array to output file(s) */
if (writeToFile && (it+rec.skipdt <= it1-1) ) {
fileno = ( ((it-rec.delay)/rec.skipdt)+1)/rec.nt;
writeRec(rec, mod, bnd, wav, ixsrc, izsrc, isam+1, ishot, fileno,
rec_vx, rec_vz, rec_txx, rec_tzz, rec_txz,
rec_p, rec_pp, rec_ss, rec_udp, rec_udvz, verbose);
}
}
/* write snapshots to output file(s) */
if (sna.nsnap) {
writeSnapTimes(mod, sna, ixsrc, izsrc, it, vx, vz, tzz, txx, txz, verbose);
}
/* calculate beams */
if(sna.beam) {
getBeamTimes(mod, sna, vx, vz, tzz, txx, txz,
beam_vx, beam_vz, beam_txx, beam_tzz, beam_txz,
beam_p, beam_pp, beam_ss, verbose);
}
}
/* taper the edges of the model */
// taperEdges(mod, bnd, vx, vz, verbose);
#pragma omp master
{
if (verbose) {
if (it==it0+100*its) t2=wallclock_time();
if (it==(it0+500*its)) {
t3=wallclock_time();
tt=(t3-t2)*(((it1-it0)*its)/400.0);
vmess("Estimated compute time = %.2f s. per shot.",tt);
vmess("Estimated total compute time = %.2f s.",tinit+shot.n*tt);
}
}
}
} /* end of OpenMP parallel section */
} /* end of loop over time steps it */
/* write output files: receivers and or beams */
if (fileno) fileno++;
if (rec.scale==1) { /* scale receiver with distance src-rcv */
float xsrc, zsrc, Rrec, rdx, rdz;
int irec;
xsrc=mod.x0+mod.dx*ixsrc;
zsrc=mod.z0+mod.dz*izsrc;
for (irec=0; irec<rec.n; irec++) {
rdx=mod.x0+rec.xr[irec]-xsrc;
rdz=mod.z0+rec.zr[irec]-zsrc;
Rrec = sqrt(rdx*rdx+rdz*rdz);
fprintf(stderr,"Rec %d is scaled with distance %f R=%.2f,%.2f S=%.2f,%.2f\n", irec, Rrec,rdx,rdz,xsrc,zsrc);
for (it=0; it<rec.nt; it++) {
rec_p[irec*rec.nt+it] *= sqrt(Rrec);
}
}
}
writeRec(rec, mod, bnd, wav, ixsrc, izsrc, isam+1, ishot, fileno,
rec_vx, rec_vz, rec_txx, rec_tzz, rec_txz,
rec_p, rec_pp, rec_ss, rec_udp, rec_udvz, verbose);
writeBeams(mod, sna, ixsrc, izsrc, ishot, fileno,
beam_vx, beam_vz, beam_txx, beam_tzz, beam_txz,
beam_p, beam_pp, beam_ss, verbose);
} /* end of loop over number of shots */
t1= wallclock_time();
if (verbose) {
vmess("Total compute time FD modelling = %.2f s.", t1-t0);
}
/* free arrays */
free(rox);
free(roz);
free(l2m);
free(src_nwav[0]);
free(src_nwav);
free(vx);
free(vz);
free(tzz);
if (rec.type.vz) free(rec_vz);
if (rec.type.vx) free(rec_vx);
if (rec.type.p) free(rec_p);
if (rec.type.txx) free(rec_txx);
if (rec.type.tzz) free(rec_tzz);
if (rec.type.txz) free(rec_txz);
if (rec.type.pp) free(rec_pp);
if (rec.type.ss) free(rec_ss);
if (rec.type.ud) {
free(rec_udvz);
free(rec_udp);
}
if(sna.beam) {
if (sna.type.vz) free(beam_vz);
if (sna.type.vx) free(beam_vx);
if (sna.type.p) free(beam_p);
if (sna.type.txx) free(beam_txx);
if (sna.type.tzz) free(beam_tzz);
if (sna.type.txz) free(beam_txz);
if (sna.type.pp) free(beam_pp);
if (sna.type.ss) free(beam_ss);
}
if (mod.ischeme==2) {
free(tss);
free(tep);
free(q);
}
if (mod.ischeme>2) {
free(lam);
free(mul);
free(txz);
free(txx);
}
if (mod.ischeme==4) {
free(tss);
free(tes);
free(tep);
free(r);
free(p);
free(q);
}
return 0;
}
int getWaveletInfo(char *file_src, int *n1, int *n2, float *d1, float *d2, float *f1, float *f2, float *fmax, int *nxm, int verbose)
{
FILE *fp;
size_t nread, trace_sz;
off_t bytes;
int ret, one_shot, ntraces;
int optn, nfreq, i, iwmax;
float *trace;
float ampl, amplmax, tampl, tamplmax;
complex *ctrace;
segy hdr;
if (file_src == NULL) return 0; /* Input pipe can not be handled */
else fp = fopen( file_src, "r" );
assert( fp != NULL);
nread = fread( &hdr, 1, TRCBYTES, fp );
assert(nread == TRCBYTES);
ret = fseeko( fp, 0, SEEK_END );
if (ret<0) perror("fseeko");
bytes = ftello( fp );
*n1 = hdr.ns;
if (hdr.trid == 1 || hdr.dt != 0) {
*d1 = ((float) hdr.dt)*1.e-6;
*f1 = ((float) hdr.delrt)/1000.;
if (*d1 == 0.0) *d1 = hdr.d1;
}
else {
*d1 = hdr.d1;
*f1 = hdr.f1;
}
*f2 = hdr.f2;
trace_sz = (size_t)(sizeof(float)*(*n1)+TRCBYTES);
ntraces = (int) (bytes/trace_sz);
*n2 = ntraces;
/* check to find out number of traces in shot gather */
optn = optncr(*n1);
nfreq = optn/2 + 1;
ctrace = (complex *)malloc(nfreq*sizeof(complex));
one_shot = 1;
trace = (float *)malloc(optn*sizeof(float));
fseeko( fp, TRCBYTES, SEEK_SET );
while (one_shot) {
memset(trace,0,optn*sizeof(float));
nread = fread( trace, sizeof(float), *n1, fp );
assert (nread == *n1);
tamplmax = 0.0;
for (i=0;i<(*n1);i++) {
tampl = fabsf(trace[i]);
if (tampl > tamplmax) tamplmax = tampl;
}
if (trace[0]*1e-3 > tamplmax) {
fprintf(stderr,"WARNING: file_src has a large amplitude %f at t=0\n", trace[0]);
fprintf(stderr,"This will introduce high frequencies and can cause dispersion.\n");
}
/* estimate maximum frequency assuming amplitude spectrum is smooth */
rc1fft(trace,ctrace,optn,1);
/* find maximum amplitude */
amplmax = 0.0;
iwmax = 0;
for (i=0;i<nfreq;i++) {
ampl = sqrt(ctrace[i].r*ctrace[i].r+ctrace[i].i*ctrace[i].i);
if (ampl > amplmax) {
amplmax = ampl;
iwmax = i;
}
}
/* from the maximum amplitude position look for the largest frequency
* which has an amplitude 400 times weaker than the maximum amplitude */
for (i=iwmax;i<nfreq;i++) {
ampl = sqrt(ctrace[i].r*ctrace[i].r+ctrace[i].i*ctrace[i].i);
if (400*ampl < amplmax) {
*fmax = (i-1)*(1.0/(optn*(*d1)));
break;
}
}
nread = fread( &hdr, 1, TRCBYTES, fp );
if (nread==0) break;
}
*nxm = (int)ntraces;
if (verbose>2) {
vmess("For file %s", file_src);
vmess("nt=%d nx=%d", *n1, *n2);
vmess("dt=%f dx=%f", *d1, *d2);
vmess("fmax=%f", *fmax);
vmess("tstart=%f", *f1);
}
fclose(fp);
free(trace);
free(ctrace);
return 0;
}
int writeSnapTimes(modPar mod, snaPar sna, bndPar bnd, int ixsrc, int izsrc, int itime, float *vx, float *vz, float *tzz, float *txx, float *txz, int verbose)
{
FILE *fpvx, *fpvz, *fptxx, *fptzz, *fptxz, *fpp, *fppp, *fpss;
int append, isnap;
static int first=1;
int n1, ibndx, ibndz, ixs, izs, ize, i, j;
int ix, iz, ix2;
float *snap, sdx;
segy hdr;
if (sna.nsnap==0) return 0;
ibndx = mod.ioXx;
ibndz = mod.ioXz;
n1 = mod.naz;
sdx = 1.0/mod.dx;
if (sna.withbnd) {
sna.nz=mod.naz;
sna.z1=0;
sna.z2=mod.naz-1;
sna.skipdz=1;
sna.nx=mod.nax;
sna.x1=0;
sna.x2=mod.nax-1;
sna.skipdx=1;
}
/* check if this itime is a desired snapshot time */
if ( (((itime-sna.delay) % sna.skipdt)==0) &&
(itime >= sna.delay) &&
(itime <= sna.delay+(sna.nsnap-1)*sna.skipdt) ) {
isnap = NINT((itime-sna.delay)/sna.skipdt);
if (verbose) vmess("Writing snapshot(%d) at time=%.4f", isnap+1, itime*mod.dt);
if (first) {
append=0;
first=0;
}
else {
append=1;
}
if (sna.type.vx) fpvx = fileOpen(sna.file_snap, "_svx", append);
if (sna.type.vz) fpvz = fileOpen(sna.file_snap, "_svz", append);
if (sna.type.p) fpp = fileOpen(sna.file_snap, "_sp", append);
if (sna.type.txx) fptxx = fileOpen(sna.file_snap, "_stxx", append);
if (sna.type.tzz) fptzz = fileOpen(sna.file_snap, "_stzz", append);
if (sna.type.txz) fptxz = fileOpen(sna.file_snap, "_stxz", append);
if (sna.type.pp) fppp = fileOpen(sna.file_snap, "_spp", append);
if (sna.type.ss) fpss = fileOpen(sna.file_snap, "_sss", append);
memset(&hdr,0,TRCBYTES);
hdr.dt = 1000000*(sna.skipdt*mod.dt);
hdr.ungpow = (sna.delay*mod.dt);
hdr.scalco = -1000;
hdr.scalel = -1000;
hdr.sx = 1000*(mod.x0+ixsrc*mod.dx);
hdr.sdepth = 1000*(mod.z0+izsrc*mod.dz);
hdr.fldr = isnap+1;
hdr.trid = 1;
hdr.ns = sna.nz;
hdr.trwf = sna.nx;
hdr.ntr = (isnap+1)*sna.nx;
hdr.f1 = sna.z1*mod.dz+mod.z0;
hdr.f2 = sna.x1*mod.dx+mod.x0;
hdr.d1 = mod.dz*sna.skipdz;
hdr.d2 = mod.dx*sna.skipdx;
if (sna.withbnd) {
if ( !ISODD(bnd.top)) hdr.f1 = mod.z0 - bnd.ntap*mod.dz;
if ( !ISODD(bnd.lef)) hdr.f2 = mod.x0 - bnd.ntap*mod.dx;
//if ( !ISODD(bnd.rig)) ;
//if ( !ISODD(bnd.bot)) store=1;
}
/***********************************************************************
* vx velocities have one sample less in x-direction
* vz velocities have one sample less in z-direction
* txz stresses have one sample less in z-direction and x-direction
***********************************************************************/
snap = (float *)malloc(sna.nz*sizeof(float));
/* Decimate, with skipdx and skipdz, the number of gridpoints written to file
and write to file. */
for (ixs=sna.x1, i=0; ixs<=sna.x2; ixs+=sna.skipdx, i++) {
hdr.tracf = i+1;
hdr.tracl = isnap*sna.nx+i+1;
hdr.gx = 1000*(mod.x0+ixs*mod.dx);
ix = ixs+ibndx;
ix2 = ix+1;
izs = sna.z1+ibndz;
ize = sna.z2+ibndz;
if (sna.withbnd) {
izs = 0;
ize = sna.z2;
ix = ixs;
ix2 = ix;
if (sna.type.vz || sna.type.txz) izs = -1;
if ( !ISODD(bnd.lef)) hdr.gx = 1000*(mod.x0 - bnd.ntap*mod.dx);
}
if (sna.type.vx) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = vx[ix2*n1+iz];
}
traceWrite(&hdr, snap, sna.nz, fpvx);
}
if (sna.type.vz) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = vz[ix*n1+iz+1];
}
traceWrite(&hdr, snap, sna.nz, fpvz);
}
if (sna.type.p) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = tzz[ix*n1+iz];
}
traceWrite(&hdr, snap, sna.nz, fpp);
}
if (sna.type.tzz) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = tzz[ix*n1+iz];
}
traceWrite(&hdr, snap, sna.nz, fptzz);
}
if (sna.type.txx) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = txx[ix*n1+iz];
}
traceWrite(&hdr, snap, sna.nz, fptxx);
}
if (sna.type.txz) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = txz[ix2*n1+iz+1];
}
traceWrite(&hdr, snap, sna.nz, fptxz);
}
/* calculate divergence of velocity field */
if (sna.type.pp) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = sdx*((vx[(ix+1)*n1+iz]-vx[ix*n1+iz])+
(vz[ix*n1+iz+1]-vz[ix*n1+iz]));
}
traceWrite(&hdr, snap, sna.nz, fppp);
}
/* calculate rotation of velocity field */
if (sna.type.ss) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = sdx*((vx[ix*n1+iz]-vx[ix*n1+iz-1])-
(vz[ix*n1+iz]-vz[(ix-1)*n1+iz]));
}
traceWrite(&hdr, snap, sna.nz, fpss);
}
}
if (sna.type.vx) fclose(fpvx);
if (sna.type.vz) fclose(fpvz);
if (sna.type.p) fclose(fpp);
if (sna.type.txx) fclose(fptxx);
if (sna.type.tzz) fclose(fptzz);
if (sna.type.txz) fclose(fptxz);
if (sna.type.pp) fclose(fppp);
if (sna.type.ss) fclose(fpss);
free(snap);
}
return 0;
}
long recvPar3D(recPar *rec, float sub_x0, float sub_y0, float sub_z0,
float dx, float dy, float dz, long nx, long ny, long nz)
{
float *xrcv1, *xrcv2, *yrcv1, *yrcv2, *zrcv1, *zrcv2;
long i, ix, iy, ir, verbose;
float dxrcv, dyrcv, dzrcv, *dxr, *dyr, *dzr;
float rrcv, dphi, oxrcv, oyrcv, ozrcv, arcv;
double circ, h, a, b, e, s, xr, yr, zr, dr, srun, phase;
float xrange, yrange, zrange, sub_x1, sub_y1, sub_z1;
long Nx1, Nx2, Ny1, Ny2, Nz1, Nz2, Ndx, Ndy, Ndz, iarray, nrec, nh;
long nxrcv, nyrcv, nzrcv, ncrcv, nrcv, ntrcv, *nlxrcv, *nlyrcv;
float *xrcva, *yrcva, *zrcva;
char* rcv_txt;
FILE *fp;
if (!getparlong("verbose", &verbose)) verbose = 0;
/* Calculate Model Dimensions */
sub_x1=sub_x0+(nx-1)*dx;
sub_y1=sub_y0+(ny-1)*dy;
sub_z1=sub_z0+(nz-1)*dz;
/* Compute how many receivers are defined and then allocate the receiver arrays */
/* Receiver Array */
nxrcv=countparval("xrcva");
nyrcv=countparval("yrcva");
nzrcv=countparval("zrcva");
if (nxrcv!=nzrcv) verr("Number of receivers in array xrcva (%li), yrcva (%li), zrcva(%li) are not equal",nxrcv,nyrcv,nzrcv);
if (verbose&&nxrcv) vmess("Total number of array receivers: %li",nxrcv);
/* Linear Receiver Arrays */
Nx1 = countparval("xrcv1");
Nx2 = countparval("xrcv2");
Ny1 = countparval("yrcv1");
Ny2 = countparval("yrcv2");
Nz1 = countparval("zrcv1");
Nz2 = countparval("zrcv2");
if (Nx1!=Nx2) verr("Number of receivers starting points in 'xrcv1' (%li) and number of endpoint in 'xrcv2' (%li) are not equal",Nx1,Nx2);
if (Ny1!=Ny2) verr("Number of receivers starting points in 'yrcv1' (%li) and number of endpoint in 'yrcv2' (%li) are not equal",Ny1,Ny2);
if (Nz1!=Nz2) verr("Number of receivers starting points in 'zrcv1' (%li) and number of endpoint in 'zrcv2' (%li) are not equal",Nz1,Nz2);
if (Nx1!=Ny2) verr("Number of receivers starting points in 'xrcv1' (%li) and number of endpoint in 'yrcv2' (%li) are not equal",Nx1,Ny2);
if (Nx1!=Nz2) verr("Number of receivers starting points in 'xrcv1' (%li) and number of endpoint in 'zrcv2' (%li) are not equal",Nx1,Nz2);
rec->max_nrec=nyrcv*nxrcv;
/* no receivers are defined use default linear array of receivers on top of model */
if (!rec->max_nrec && Nx1==0) Nx1=1; // Default is to use top of model to record data
if (!rec->max_nrec && Ny1==0) Ny1=1;
if (Nx1) {
/* Allocate Start & End Points of Linear Arrays */
xrcv1=(float *)malloc(Nx1*sizeof(float));
xrcv2=(float *)malloc(Nx1*sizeof(float));
yrcv1=(float *)malloc(Nx1*sizeof(float));
yrcv2=(float *)malloc(Nx1*sizeof(float));
zrcv1=(float *)malloc(Nx1*sizeof(float));
zrcv2=(float *)malloc(Nx1*sizeof(float));
if (!getparfloat("xrcv1",xrcv1)) xrcv1[0]=sub_x0;
if (!getparfloat("xrcv2",xrcv2)) xrcv2[0]=sub_x1;
if (!getparfloat("yrcv1",yrcv1)) yrcv1[0]=sub_y0;
if (!getparfloat("yrcv2",yrcv2)) yrcv2[0]=sub_y1;
if (!getparfloat("zrcv1",zrcv1)) zrcv1[0]=sub_z0;
if (!getparfloat("zrcv2",zrcv2)) zrcv2[0]=zrcv1[0];
/* check if receiver arrays fit into model */
for (iarray=0; iarray<Nx1; iarray++) {
xrcv1[iarray] = MAX(sub_x0, xrcv1[iarray]);
xrcv1[iarray] = MIN(sub_x0+nx*dx,xrcv1[iarray]);
xrcv2[iarray] = MAX(sub_x0, xrcv2[iarray]);
xrcv2[iarray] = MIN(sub_x0+nx*dx,xrcv2[iarray]);
yrcv1[iarray] = MAX(sub_y0, yrcv1[iarray]);
yrcv1[iarray] = MIN(sub_y0+ny*dy,yrcv1[iarray]);
yrcv2[iarray] = MAX(sub_y0, yrcv2[iarray]);
yrcv2[iarray] = MIN(sub_y0+ny*dy,yrcv2[iarray]);
zrcv1[iarray] = MAX(sub_z0, zrcv1[iarray]);
zrcv1[iarray] = MIN(sub_z0+nz*dz,zrcv1[iarray]);
zrcv2[iarray] = MAX(sub_z0, zrcv2[iarray]);
zrcv2[iarray] = MIN(sub_z0+nz*dz,zrcv2[iarray]);
}
/* Crop to Fit Model */
/* Max's addtion still have to check if it has the same fucntionality */
for (iarray=0;iarray<Nx1;iarray++) {
if (xrcv1[iarray]<sub_x0) {
if (xrcv2[iarray]<sub_x0) {
verr("Linear array %li outside model bounds",iarray);
}
else {
vwarn("Cropping element %li of 'xrcv1' (%f) to model bounds (%f)",iarray,xrcv1[iarray],sub_x0);
xrcv1[iarray]=sub_x0;
}
}
else if (xrcv1[iarray] > sub_x1) {
verr("Linear array %li outside model bounds",iarray);
}
if ( (xrcv2[iarray] < xrcv1[iarray]) ) {
verr("Ill defined linear array %li, 'xrcv1' (%f) greater than 'xrcv2' (%f)",iarray,xrcv1[iarray],xrcv2[iarray]);
}
else if (xrcv2[iarray]>sub_x1) {
vwarn("Cropping element %li of 'xrcv2' (%f) to model bounds (%f)",iarray,xrcv2[iarray],sub_x1);
xrcv2[iarray]=sub_x1;
}
if (yrcv1[iarray]<sub_y0) {
if (yrcv2[iarray]<sub_y0) {
verr("Linear array %li outside model bounds",iarray);
}
else {
vwarn("Cropping element %li of 'yrcv1' (%f) to model bounds (%f)",iarray,yrcv1[iarray],sub_y0);
yrcv1[iarray]=sub_y0;
}
}
else if (yrcv1[iarray] > sub_y1) {
verr("Linear array %li outside model bounds",iarray);
}
if ( (yrcv2[iarray] < yrcv1[iarray]) ) {
verr("Ill defined linear array %li, 'yrcv1' (%f) greater than 'yrcv2' (%f)",iarray,yrcv1[iarray],yrcv2[iarray]);
}
else if (yrcv2[iarray]>sub_y1) {
vwarn("Cropping element %li of 'yrcv2' (%f) to model bounds (%f)",iarray,yrcv2[iarray],sub_y1);
yrcv2[iarray]=sub_y1;
}
if (zrcv1[iarray] < sub_z0) {
if (zrcv2[iarray] < sub_z0) {
verr("Linear array %li outside model bounds",iarray);
}
else {
vwarn("Cropping element %li of 'zrcv1' (%f) to model bounds (%f)",iarray,zrcv1[iarray],sub_z0);
zrcv1[iarray]=sub_z0;
}
}
else if (zrcv1[iarray] > sub_z1) {
verr("Linear array %li outside model bounds",iarray);
}
if ( (zrcv2[iarray] < zrcv1[iarray]) ) {
verr("Ill defined linear array %li, 'zrcv1' (%f) greater than 'zrcv2' (%f)",iarray,zrcv1[iarray],zrcv2[iarray]);
}
else if (zrcv2[iarray]>sub_z1) {
vwarn("Cropping element %li of 'xrcv2' (%f) to model bounds (%f)",iarray,zrcv2[iarray],sub_z1);
zrcv2[iarray]=sub_z1;
}
}
/* Get Sampling Rates */
Ndx = countparval("dxrcv");
Ndy = countparval("dyrcv");
Ndz = countparval("dzrcv");
dxr = (float *)malloc(Nx1*sizeof(float));
dyr = (float *)malloc(Nx1*sizeof(float));
dzr = (float *)malloc(Nx1*sizeof(float));
if(!getparfloat("dxrcv", dxr)) dxr[0]=dx;
if(!getparfloat("dyrcv", dyr)) dyr[0]=dy;
if(!getparfloat("dzrcv", dzr)) dzr[0]=0.0;
if ( (Ndx<=1) && (Ndy<=1) && (Ndz==0) ){ /* default values are set */
for (i=1; i<Nx1; i++) {
dxr[i] = dxr[0];
dyr[i] = dyr[0];
dzr[i] = dzr[0];
}
Ndx=1;
Ndy=1;
Ndz=1;
}
else if ( (Ndz==1) && (Ndx==0) && (Ndy==0) ){ /* default values are set */
for (i=1; i<Nx1; i++) {
dxr[i] = dxr[0];
dyr[i] = dyr[0];
dzr[i] = dzr[0];
}
Ndz=1;
Ndy=1;
Ndx=1;
}
else { /* make sure that each array has dzrcv or dxrcv defined for each line or receivers */
if (Ndx!=Ndz) {
verr("Number of 'dxrcv' (%li) is not equal to number of 'dzrcv' (%li) or 1",Ndx,Ndz);
}
if (Ndx!=Ndy) {
verr("Number of 'dxrcv' (%li) is not equal to number of 'dyrcv' (%li) or 1",Ndx,Ndy);
}
if (Ndx!=Nx1 && Ndx!=1) {
verr("Number of 'dxrcv' (%li) is not equal to number of starting points in 'xrcv1' (%li) or 1",Ndx,Nx1);
}
if (Ndy!=Ny1 && Ndy!=1) {
verr("Number of 'dyrcv' (%li) is not equal to number of starting points in 'yrcv1' (%li) or 1",Ndy,Ny1);
}
}
/* check consistency of receiver steps */
for (iarray=0; iarray<Ndx; iarray++) {
if (dxr[iarray]<0) {
dxr[i]=dx;
vwarn("'dxrcv' element %li (%f) is less than zero, changing it to %f'",iarray,dxr[iarray],dx);
}
}
for (iarray=0; iarray<Ndy; iarray++) {
if (dyr[iarray]<0) {
dyr[i]=dx;
vwarn("'dyrcv' element %li (%f) is less than zero, changing it to %f'",iarray,dyr[iarray],dy);
}
}
for (iarray=0;iarray<Ndz;iarray++) {
if (dzr[iarray]<0) {
dzr[iarray]=dz;
vwarn("'dzrcv' element %li (%f) is less than zero, changing it to %f'",iarray,dzr[iarray],dz);
}
}
for (iarray=0;iarray<Ndx;iarray++){
if (dxr[iarray]==0 && dzr[iarray]==0) {
xrcv2[iarray]=xrcv1[iarray];
dxr[iarray]=1.;
vwarn("'dxrcv' element %li & 'dzrcv' element 1 are both 0.",iarray+1);
vmess("Placing 1 receiver at (%li,%li)",xrcv1[iarray],zrcv1[iarray]);
}
}
for (iarray=0;iarray<Ndx;iarray++){
if (xrcv1[iarray]==xrcv2[iarray] && dxr[iarray]!=0) {
dxr[iarray]=0.;
vwarn("Linear array %li: 'xrcv1'='xrcv2' and 'dxrcv' is not 0. Setting 'dxrcv'=0",iarray+1);
}
}
for (iarray=0;iarray<Ndx;iarray++){
if (yrcv1[iarray]==yrcv2[iarray] && dyr[iarray]!=0) {
dyr[iarray]=0.;
vwarn("Linear array %li: 'yrcv1'='yrcv2' and 'dyrcv' is not 0. Setting 'dyrcv'=0",iarray+1);
}
}
for (iarray=0;iarray<Ndx;iarray++){
if (zrcv1[iarray]==zrcv2[iarray] && dzr[iarray]!=0.){
dzr[iarray]=0.;
vwarn("Linear array %li: 'zrcv1'='zrcv2' and 'dzrcv' is not 0. Setting 'dzrcv'=0",iarray+1);
}
}
/* Calculate Number of Receivers */
nrcv = 0;
nlxrcv=(long *)malloc(Nx1*sizeof(long));
nlyrcv=(long *)malloc(Nx1*sizeof(long));
for (iarray=0; iarray<Nx1; iarray++) {
xrange = (xrcv2[iarray]-xrcv1[iarray]);
yrange = (yrcv2[iarray]-yrcv1[iarray]);
zrange = (zrcv2[iarray]-zrcv1[iarray]);
if (dxr[iarray] != 0.0 && dyr[iarray] != 0.0) {
nlxrcv[iarray] = NINT(fabs(xrange/dxr[iarray]))+1;
nlyrcv[iarray] = NINT(fabs(yrange/dyr[iarray]))+1;
}
else if (dxr[iarray] != 0.0) {
nlxrcv[iarray] = NINT(fabs(xrange/dxr[iarray]))+1;
nlyrcv[iarray] = 1;
}
else if (dyr[iarray] != 0.0) {
nlxrcv[iarray] = 1;
nlyrcv[iarray] = NINT(fabs(yrange/dyr[iarray]))+1;
}
else {
if (dzr[iarray] == 0) {
verr("For receiver array %li: receiver distance dzrcv is not given", iarray);
}
nlxrcv[iarray] = NINT(fabs(zrange/dzr[iarray]))+1;
nlyrcv[iarray] = NINT(fabs(zrange/dzr[iarray]))+1;
}
nrcv+=nlyrcv[iarray]*nlxrcv[iarray];
}
/* Calculate Number of Receivers */
if (verbose) vmess("Total number of linear array receivers: %li",nrcv);
if (!nrcv) {
free(xrcv1);
free(xrcv2);
free(yrcv1);
free(yrcv2);
free(zrcv1);
free(zrcv2);
free(dxr);
free(dyr);
free(dzr);
free(nlxrcv);
free(nlyrcv);
}
rec->max_nrec+=nrcv;
}
else {
nrcv=0;
}
/* allocate the receiver arrays */
/* Total Number of Receivers */
if (verbose) vmess("Total number of receivers: %li",rec->max_nrec);
/* Allocate Arrays */
rec->x = (long *)calloc(rec->max_nrec,sizeof(long));
rec->y = (long *)calloc(rec->max_nrec,sizeof(long));
rec->z = (long *)calloc(rec->max_nrec,sizeof(long));
rec->xr = (float *)calloc(rec->max_nrec,sizeof(float));
rec->yr = (float *)calloc(rec->max_nrec,sizeof(float));
rec->zr = (float *)calloc(rec->max_nrec,sizeof(float));
/* read in the receiver postions */
nrec=0;
/* Receiver Array */
if (nxrcv != 0 && nyrcv != 0) {
/* receiver array is defined */
xrcva = (float *)malloc(nxrcv*sizeof(float));
yrcva = (float *)malloc(nxrcv*sizeof(float));
zrcva = (float *)malloc(nxrcv*sizeof(float));
getparfloat("xrcva", xrcva);
getparfloat("yrcva", yrcva);
getparfloat("zrcva", zrcva);
for (iy=0; iy<nyrcv; iy++) {
for (ix=0; ix<nxrcv; ix++) {
rec->xr[nrec+iy*nxrcv+ix] = xrcva[ix]-sub_x0;
rec->yr[nrec+iy*nxrcv+ix] = yrcva[iy]-sub_y0;
rec->zr[nrec+iy*nxrcv+ix] = zrcva[ix]-sub_z0;
rec->x[nrec+iy*nxrcv+ix] = NINT((xrcva[ix]-sub_x0)/dx);
rec->y[nrec+iy*nxrcv+ix] = NINT((yrcva[iy]-sub_y0)/dy);
rec->z[nrec+iy*nxrcv+ix] = NINT((zrcva[ix]-sub_z0)/dz);
if (verbose>4) fprintf(stderr,"Receiver Array: xrcv[%li]=%f yrcv[%li]=%f zrcv=%f\n", ix, rec->xr[nrec+ix]+sub_x0, iy, rec->yr[nrec+ix]+sub_y0, rec->zr[nrec+ix]+sub_z0);
}
}
free(xrcva);
free(yrcva);
free(zrcva);
nrec += nyrcv*nxrcv;
}
/* Linear Receiver Arrays */
if (nrcv!=0) {
xrcv1 = (float *)malloc(Nx1*sizeof(float));
xrcv2 = (float *)malloc(Nx1*sizeof(float));
yrcv1 = (float *)malloc(Nx1*sizeof(float));
yrcv2 = (float *)malloc(Nx1*sizeof(float));
zrcv1 = (float *)malloc(Nx1*sizeof(float));
zrcv2 = (float *)malloc(Nx1*sizeof(float));
if(!getparfloat("xrcv1", xrcv1)) xrcv1[0]=sub_x0;
if(!getparfloat("xrcv2", xrcv2)) xrcv2[0]=(nx-1)*dx+sub_x0;
if(!getparfloat("yrcv1", yrcv1)) yrcv1[0]=sub_y0;
if(!getparfloat("yrcv2", yrcv2)) yrcv2[0]=(ny-1)*dy+sub_y0;
if(!getparfloat("zrcv1", zrcv1)) zrcv1[0]=sub_z0;
if(!getparfloat("zrcv2", zrcv2)) zrcv2[0]=zrcv1[0];
Ndx = countparval("dxrcv");
Ndy = countparval("dyrcv");
Ndz = countparval("dzrcv");
dxr = (float *)malloc(Nx1*sizeof(float));
dyr = (float *)malloc(Nx1*sizeof(float));
dzr = (float *)malloc(Nx1*sizeof(float));
if(!getparfloat("dxrcv", dxr)) dxr[0]=dx;
if(!getparfloat("dyrcv", dyr)) dyr[0]=dy;
if(!getparfloat("dzrcv", dzr)) dzr[0]=0.0;
if ( (Ndx<=1) && (Ndy<=1) && (Ndz==0) ){ /* default values are set */
for (i=1; i<Nx1; i++) {
dxr[i] = dxr[0];
dyr[i] = dyr[0];
dzr[i] = dzr[0];
}
Ndx=1;
Ndy=1;
}
else if ( (Ndx<=1) && (Ndy==0) && (Ndz==0) ){ /* default values are set */
for (i=1; i<Nx1; i++) {
dxr[i] = dxr[0];
dyr[i] = dyr[0];
dzr[i] = dzr[0];
}
Ndx=1;
}
else if ( (Ndy<=1) && (Ndx==0) && (Ndz==0) ){ /* default values are set */
for (i=1; i<Nx1; i++) {
dxr[i] = dxr[0];
dyr[i] = dyr[0];
dzr[i] = dzr[0];
}
Ndy=1;
}
else if ( (Ndz==1) && (Ndy==0) && (Ndx==0) ){ /* default values are set */
for (i=1; i<Nx1; i++) {
dxr[i] = dxr[0];
dyr[i] = dyr[0];
dzr[i] = dzr[0];
}
Ndz=1;
}
else { /* make sure that each array has dzrcv or dxrcv defined for each line or receivers */
if (Ndx>1) assert(Ndx==Nx1);
if (Ndy>1) assert(Ndy==Ny1);
if (Ndz>1) assert(Ndz==Nx1);
}
/* check if receiver arrays fit into model */
for (iarray=0; iarray<Nx1; iarray++) {
xrcv1[iarray] = MAX(sub_x0, xrcv1[iarray]);
xrcv1[iarray] = MIN(sub_x0+nx*dx,xrcv1[iarray]);
xrcv2[iarray] = MAX(sub_x0, xrcv2[iarray]);
xrcv2[iarray] = MIN(sub_x0+nx*dx,xrcv2[iarray]);
yrcv1[iarray] = MAX(sub_y0, yrcv1[iarray]);
yrcv1[iarray] = MIN(sub_y0+ny*dy,yrcv1[iarray]);
yrcv2[iarray] = MAX(sub_y0, yrcv2[iarray]);
yrcv2[iarray] = MIN(sub_y0+ny*dy,yrcv2[iarray]);
zrcv1[iarray] = MAX(sub_z0, zrcv1[iarray]);
zrcv1[iarray] = MIN(sub_z0+nz*dz,zrcv1[iarray]);
zrcv2[iarray] = MAX(sub_z0, zrcv2[iarray]);
zrcv2[iarray] = MIN(sub_z0+nz*dz,zrcv2[iarray]);
}
/* calculate receiver array and store into rec->x,y,z */
for (iarray=0; iarray<Nx1; iarray++) {
xrange = (xrcv2[iarray]-xrcv1[iarray]);
yrange = (yrcv2[iarray]-yrcv1[iarray]);
zrange = (zrcv2[iarray]-zrcv1[iarray]);
if (dxr[iarray] != 0.0) {
nrcv = nlyrcv[iarray]*nlxrcv[iarray];
dxrcv = dxr[iarray];
dyrcv = yrange/(nlyrcv[iarray]-1);
dzrcv = zrange/(nlxrcv[iarray]-1);
if (dyrcv != dyr[iarray]) {
vwarn("For receiver array %li: calculated dyrcv=%f given=%f", iarray, dyrcv, dyr[iarray]);
vwarn("The calculated receiver distance %f is used", dyrcv);
}
if (dzrcv != dzr[iarray]) {
vwarn("For receiver array %li: calculated dzrcv=%f given=%f", iarray, dzrcv, dzr[iarray]);
vwarn("The calculated receiver distance %f is used", dzrcv);
}
}
else if (dyr[iarray] != 0.0) {
nrcv = nlyrcv[iarray]*nlxrcv[iarray];
dxrcv = xrange/(nlxrcv[iarray]-1);
dyrcv = dyr[iarray];
dzrcv = zrange/(nlxrcv[iarray]-1);
if (dxrcv != dxr[iarray]) {
vwarn("For receiver array %li: calculated dxrcv=%f given=%f", iarray, dxrcv, dxr[iarray]);
vwarn("The calculated receiver distance %f is used", dxrcv);
}
if (dzrcv != dzr[iarray]) {
vwarn("For receiver array %li: calculated dzrcv=%f given=%f", iarray, dzrcv, dzr[iarray]);
vwarn("The calculated receiver distance %f is used", dzrcv);
}
}
else {
if (dzr[iarray] == 0) {
verr("For receiver array %li: receiver distance dzrcv is not given", iarray);
}
nrcv = nlyrcv[iarray]*nlxrcv[iarray];
dxrcv = xrange/(nrcv-1);
dyrcv = yrange/(nrcv-1);
dzrcv = dzr[iarray];
if (dxrcv != dxr[iarray]) {
vwarn("For receiver array %li: calculated dxrcv=%f given=%f", iarray, dxrcv, dxr[iarray]);
vwarn("The calculated receiver distance %f is used", dxrcv);
}
if (dyrcv != dyr[iarray]) {
vwarn("For receiver array %li: calculated dyrcv=%f given=%f", iarray, dyrcv, dyr[iarray]);
vwarn("The calculated receiver distance %f is used", dyrcv);
}
}
// calculate coordinates
for (iy=0; iy<nlyrcv[iarray]; iy++) {
for (ix=0; ix<nlxrcv[iarray]; ix++) {
rec->xr[nrec]=xrcv1[iarray]-sub_x0+ix*dxrcv;
rec->yr[nrec]=yrcv1[iarray]-sub_y0+iy*dyrcv;
rec->zr[nrec]=zrcv1[iarray]-sub_z0+ix*dzrcv;
rec->x[nrec]=NINT((rec->xr[nrec])/dx);
rec->y[nrec]=NINT((rec->yr[nrec])/dy);
rec->z[nrec]=NINT((rec->zr[nrec])/dz);
nrec++;
}
}
}
free(xrcv1);
free(xrcv2);
free(yrcv1);
free(yrcv2);
free(zrcv1);
free(zrcv2);
free(dxr);
free(dyr);
free(dzr);
free(nlxrcv);
free(nlyrcv);
}
rec->n=rec->max_nrec;
return 0;
}
long writeSnapTimes3D(modPar mod, snaPar sna, bndPar bnd, wavPar wav,
long ixsrc, long iysrc, long izsrc, long itime, float *vx, float *vy, float *vz,
float *tzz, float *tyy, float *txx, float *txz, float *tyz, float *txy, long verbose)
{
FILE *fpvx, *fpvy, *fpvz, *fptxx, *fptyy, *fptzz, *fptxz, *fptyz, *fptxy, *fpp, *fppp, *fpss;
long append, isnap;
static long first=1;
long n1, n2, ibndx, ibndy, ibndz, ixs, iys, izs, ize, i, j, l;
long ix, iy, iz, ix2, iy2;
float *snap, sdx, stime;
segy hdr;
if (sna.nsnap==0) return 0;
ibndx = mod.ioXx;
ibndy = mod.ioXy;
ibndz = mod.ioXz;
n1 = mod.naz;
n2 = mod.nax;
sdx = 1.0/mod.dx;
if (sna.withbnd) {
sna.nz=mod.naz;
sna.z1=0;
sna.z2=mod.naz-1;
sna.skipdz=1;
sna.ny=mod.nax;
sna.y1=0;
sna.y2=mod.nay-1;
sna.skipdy=1;
sna.nx=mod.nax;
sna.x1=0;
sna.x2=mod.nax-1;
sna.skipdx=1;
}
/* check if this itime is a desired snapshot time */
if ( (((itime-sna.delay) % sna.skipdt)==0) &&
(itime >= sna.delay) &&
(itime <= sna.delay+(sna.nsnap-1)*sna.skipdt) ) {
isnap = NINT((itime-sna.delay)/sna.skipdt);
if (mod.grid_dir) stime = (-wav.nt+1+itime+1)*mod.dt; /* reverse time modeling */
else stime = itime*mod.dt;
if (verbose) vmess("Writing snapshot(%li) at time=%.4f", isnap+1, stime);
if (first) {
append=0;
first=0;
}
else {
append=1;
}
if (sna.type.vx) fpvx = fileOpen(sna.file_snap, "_svx", (int)append);
if (sna.type.vy) fpvy = fileOpen(sna.file_snap, "_svy", (int)append);
if (sna.type.vz) fpvz = fileOpen(sna.file_snap, "_svz", (int)append);
if (sna.type.p) fpp = fileOpen(sna.file_snap, "_sp", (int)append);
if (sna.type.txx) fptxx = fileOpen(sna.file_snap, "_stxx", (int)append);
if (sna.type.tyy) fptyy = fileOpen(sna.file_snap, "_styy", (int)append);
if (sna.type.tzz) fptzz = fileOpen(sna.file_snap, "_stzz", (int)append);
if (sna.type.txz) fptxz = fileOpen(sna.file_snap, "_stxz", (int)append);
if (sna.type.tyz) fptyz = fileOpen(sna.file_snap, "_styz", (int)append);
if (sna.type.txy) fptxy = fileOpen(sna.file_snap, "_stxy", (int)append);
if (sna.type.pp) fppp = fileOpen(sna.file_snap, "_spp", (int)append);
if (sna.type.ss) fpss = fileOpen(sna.file_snap, "_sss", (int)append);
memset(&hdr,0,TRCBYTES);
hdr.dt = 1000000*(sna.skipdt*mod.dt);
hdr.ungpow = (sna.delay*mod.dt);
hdr.scalco = -1000;
hdr.scalel = -1000;
hdr.sx = 1000*(mod.x0+ixsrc*mod.dx);
hdr.sy = 1000*(mod.y0+iysrc*mod.dy);
hdr.sdepth = 1000*(mod.z0+izsrc*mod.dz);
hdr.fldr = isnap+1;
hdr.trid = 1;
hdr.ns = sna.nz;
hdr.trwf = sna.nx*sna.nx;
hdr.ntr = (isnap+1)*sna.nx;
hdr.f1 = sna.z1*mod.dz+mod.z0;
hdr.f2 = sna.x1*mod.dx+mod.x0;
hdr.d1 = mod.dz*sna.skipdz;
hdr.d2 = mod.dx*sna.skipdx;
if (sna.withbnd) {
if ( !ISODD(bnd.top)) hdr.f1 = mod.z0 - bnd.ntap*mod.dz;
if ( !ISODD(bnd.lef)) hdr.f2 = mod.x0 - bnd.ntap*mod.dx;
//if ( !ISODD(bnd.rig)) ;
//if ( !ISODD(bnd.bot)) store=1;
}
/***********************************************************************
* vx velocities have one sample less in x-direction
* vz velocities have one sample less in z-direction
* txz stresses have one sample less in z-direction and x-direction
***********************************************************************/
snap = (float *)malloc(sna.nz*sizeof(float));
/* Decimate, with skipdx and skipdz, the number of gridpoints written to file
and write to file. */
for (iys=sna.y1, l=0; iys<=sna.y2; iys+=sna.skipdy, l++) {
for (ixs=sna.x1, i=0; ixs<=sna.x2; ixs+=sna.skipdx, i++) {
hdr.tracf = l*sna.nx+i+1;
hdr.tracl = isnap*sna.nx*sna.ny+l*sna.nx+i+1;
hdr.gx = 1000*(mod.x0+ixs*mod.dx);
hdr.gy = 1000*(mod.y0+iys*mod.dy);
ix = ixs+ibndx;
ix2 = ix+1;
iy = iys+ibndy;
iy2 = iy+1;
izs = sna.z1+ibndz;
ize = sna.z2+ibndz;
if (sna.withbnd) {
izs = 0;
ize = sna.z2;
ix = ixs;
ix2 = ix;
iy = iys;
iy2 = iy;
if (sna.type.vz || sna.type.txz || sna.type.tyz) izs = -1;
if ( !ISODD(bnd.lef)) hdr.gx = 1000*(mod.x0 - bnd.ntap*mod.dx);
if ( !ISODD(bnd.fro)) hdr.gy = 1000*(mod.y0 - bnd.ntap*mod.dy);
}
if (sna.type.vx) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = vx[iy*n1*n2+ix2*n1+iz];
}
traceWrite(&hdr, snap, (int)sna.nz, fpvx);
}
if (sna.type.vy) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = vy[iy2*n1*n2+ix*n1+iz];
}
traceWrite(&hdr, snap, (int)sna.nz, fpvy);
}
if (sna.type.vz) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = vz[iy*n1*n2+ix*n1+iz+1];
}
traceWrite(&hdr, snap, (int)sna.nz, fpvz);
}
if (sna.type.p) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = tzz[iy*n1*n2+ix*n1+iz];
}
traceWrite(&hdr, snap, (int)sna.nz, fpp);
}
if (sna.type.tzz) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = tzz[iy*n1*n2+ix*n1+iz];
}
traceWrite(&hdr, snap, (int)sna.nz, fptzz);
}
if (sna.type.tyy) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = tyy[iy*n1*n2+ix*n1+iz];
}
traceWrite(&hdr, snap, (int)sna.nz, fptyy);
}
if (sna.type.txx) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = txx[iy*n1*n2+ix*n1+iz];
}
traceWrite(&hdr, snap, (int)sna.nz, fptxx);
}
if (sna.type.txz) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = txz[iy*n1*n2+ix2*n1+iz+1];
}
traceWrite(&hdr, snap, (int)sna.nz, fptxz);
}
if (sna.type.txy) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = txy[iy2*n1*n2+ix2*n1+iz];
}
traceWrite(&hdr, snap, (int)sna.nz, fptxy);
}
if (sna.type.tyz) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = tyz[iy2*n1*n2+ix*n1+iz+1];
}
traceWrite(&hdr, snap, (int)sna.nz, fptyz);
}
/* calculate divergence of velocity field */
if (sna.type.pp) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = sdx*((vx[iy*n1*n2+(ix+1)*n1+iz]-vx[iy*n1*n2+ix*n1+iz])+
(vy[(iy+1)*n1*n2+ix*n1+iz]-vy[iy*n1*n2+ix*n1+iz])+
(vz[iy*n1*n2+ix*n1+iz+1]-vz[iy*n1*n2+ix*n1+iz]));
}
traceWrite(&hdr, snap, (int)sna.nz, fppp);
}
/* calculate rotation of velocity field */
if (sna.type.ss) {
for (iz=izs, j=0; iz<=ize; iz+=sna.skipdz, j++) {
snap[j] = sdx*((vx[iy*n1*n2+ix*n1+iz]-vx[(iy-1)*n1*n2+ix*n1+iz-1])-
(vy[iy*n1*n2+ix*n1+iz]-vy[iy*n1*n2+(ix-1)*n1+iz-1])-
(vz[iy*n1*n2+ix*n1+iz]-vz[(iy-1)*n1*n2+(ix-1)*n1+iz]));
}
traceWrite(&hdr, snap, (int)sna.nz, fpss);
}
}
}
if (sna.type.vx) fclose(fpvx);
if (sna.type.vy) fclose(fpvy);
if (sna.type.vz) fclose(fpvz);
if (sna.type.p) fclose(fpp);
if (sna.type.txx) fclose(fptxx);
if (sna.type.tyy) fclose(fptyy);
if (sna.type.tzz) fclose(fptzz);
if (sna.type.txz) fclose(fptxz);
if (sna.type.tyz) fclose(fptyz);
if (sna.type.txy) fclose(fptxy);
if (sna.type.pp) fclose(fppp);
if (sna.type.ss) fclose(fpss);
free(snap);
}
return 0;
}