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sudepthconvert.v2.c
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sudepthconvert.v2.c
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#include <stdio.h>
#include <stddef.h>
#include "par.h"
#include "su.h"
#include "cwp.h"
#include "segy.h"
#define abs(x) ( (x) < 0 ? -(x) : (x) )
#define min(a,b) ((a) <= (b) ? (a) : (b))
#define max(a,b) ((a) >= (b) ? (a) : (b))
#define nint(x) ((x) < 0 ? ceil ( (x) - 0.5 ) : floor ( (x) + 0.5 ))
char *sdoc[] = {NULL};
segy tr, vtr;
int main(int argc, char **argv) {
int gelev_vmin, gelev_vmax, selev_vmin, selev_vmax;
int gelev_min, gelev_max, selev_min, selev_max;
int gelev_globalmin, gelev_globalmax, selev_globalmin, selev_globalmax;
int gelev_num, selev_num;
int imin, iminv, ifirst, nz1, nz, ns, ntr, ntrv, nsv;
double dfirst, delrt, delrtv, twt, dt, dtv, factor, z, amp_out;
double *depth, *tr_amp;
float ***velocity;
short verbose;
register int i, j, k, l;
cwp_String vfile;
FILE *fv;
initargs(argc, argv);
requestdoc (0);
if (!getparshort("verbose", &verbose)) verbose = 1;
if (!getparstring("vfile",&vfile)) vfile = "output.su";
ntr = gettra (&tr, 0);
fv = efopen (vfile, "r");
ntrv = fgettra (fv, &vtr, 0);
delrt = tr.delrt;
delrtv = vtr.delrt;
if (!getparint("ns", &ns)) ns = tr.ns;
if (!getparint("nsv", &nsv)) nsv = vtr.ns;
if (!getparint("nz", &nz)) nz=2000;
dt = tr.dt * 0.001;
dtv = vtr.dt * 0.001;
imin = nint ( delrt / dt );
iminv = nint ( delrtv / dtv );
depth = ealloc1double ( ns );
tr_amp = ealloc1double ( ns );
factor = 0.0005;
if ( verbose ) {
fprintf ( stderr, "\n" );
fprintf ( stderr, "Number of input traces = %d\n", ntr );
fprintf ( stderr, "Number of input samples per trace = %d\n", ns );
fprintf ( stderr, "Number of output samples per trace = %d\n", nz );
fprintf ( stderr, "Sample rate = %f ms.\n", dt );
fprintf ( stderr, "Average velocity SU file name = %s\n", vfile );
fprintf ( stderr, "Number of VAVG input traces = %d\n", ntrv );
fprintf ( stderr, "Number of VAVG input samples per trace = %d\n", nsv );
fprintf ( stderr, "VAVG Sample rate = %f ms.\n", dtv );
fprintf ( stderr, "Input Delay = %f ms., First sample = %d\n", delrt, imin );
fprintf ( stderr, "Velocity Delay = %f ms., First sample = %d\n", delrtv, iminv );
fprintf ( stderr, "\n" );
}
rewind ( fv );
gelev_vmin = selev_vmin = INT_MAX;
gelev_vmax = selev_vmax = INT_MIN;
for ( i = 0; i < ntrv; ++i ) {
fgettr (fv, &vtr);
gelev_vmin = min ( gelev_vmin, vtr.gelev );
gelev_vmax = max ( gelev_vmax, vtr.gelev );
selev_vmin = min ( selev_vmin, vtr.selev );
selev_vmax = max ( selev_vmax, vtr.selev );
}
if ( verbose ) fprintf ( stderr, "VELOCITY DATA - gelev_vmin = %d, gelev_vmax = %d, selev_vmin = %d, selev_vmax = %d\n", gelev_vmin, gelev_vmax, selev_vmin, selev_vmax );
rewind (stdin);
gelev_min = selev_min = INT_MAX;
gelev_max = selev_max = INT_MIN;
for ( i = 0; i < ntr; ++i ) {
gettr (&tr);
gelev_min = min ( gelev_min, tr.gelev );
gelev_max = max ( gelev_max, tr.gelev );
selev_min = min ( selev_min, tr.selev );
selev_max = max ( selev_max, tr.selev );
}
if ( verbose ) fprintf ( stderr, "INPUT DATA - gelev_min = %d, gelev_max = %d, selev_min = %d, selev_max = %d\n", gelev_min, gelev_max, selev_min, selev_max );
gelev_globalmin = max ( gelev_min, gelev_vmin );
selev_globalmin = max ( selev_min, selev_vmin );
gelev_globalmax = min ( gelev_max, gelev_vmax );
selev_globalmax = min ( selev_max, selev_vmax );
gelev_num = gelev_globalmax - gelev_globalmin + 1;
selev_num = selev_globalmax - selev_globalmin + 1;
if ( verbose ) {
fprintf ( stderr, "\n" );
fprintf ( stderr, "gelev_globalmin = %d, gelev_globalmax = %d, selev_globalmin = %d, selev_globalmax = %d\n", gelev_globalmin, gelev_globalmax, selev_globalmin, selev_globalmax );
fprintf ( stderr, "gelev_num = %d, selev_num = %d\n", gelev_num, selev_num );
}
velocity = ealloc3float ( nsv, selev_num, gelev_num );
rewind ( fv );
ifirst = 0;
dfirst = 9999999999999999.9;
for ( k = 0; k < ntrv; ++k ) {
fgettr (fv, &vtr);
if ( vtr.gelev >= gelev_globalmin && vtr.gelev <= gelev_globalmax && vtr.selev >= selev_globalmin && vtr.selev <= selev_globalmax ) {
i = vtr.gelev - gelev_globalmin;
j = vtr.selev - selev_globalmin;
memcpy( (void *) &velocity[i][j][0], (const void *) &vtr.data, nsv * FSIZE );
dfirst = min ( dfirst, velocity[i][j][0] * delrtv * factor );
}
}
efclose (fv);
ifirst = nint ( dfirst / dt );
nz1 = nz - ifirst;
if ( verbose ) fprintf ( stderr, "ifirst = %d, dfirst = %f, nz1 = %d\n", ifirst, dfirst, nz1 );
float zero;
double depth_max;
zero = 0.0;
rewind (stdin);
for ( l = 0; l < ntr; ++l ) {
gettr (&tr);
if ( tr.gelev >= gelev_globalmin && tr.gelev <= gelev_globalmax && tr.selev >= selev_globalmin && tr.selev <= selev_globalmax ) {
i = tr.gelev - gelev_globalmin;
j = tr.selev - selev_globalmin;
for ( k = 0; k < nsv; ++k ) {
twt = ( k * dtv ) + delrtv;
tr_amp[k] = tr.data[k+iminv];
depth[k] = velocity[i][j][k] * twt * factor;
}
depth_max = depth[nsv-1];
fprintf ( stderr, "trace number = %5d, depth_max = %f\n", l, depth_max );
for ( k=ifirst; k < nz1; ++k ) {
z = k * dt;
if ( z <= depth_max ) {
dintlin ( nsv, depth, tr_amp, tr_amp[0], tr_amp[nsv-1], 1, &z, &_out );
tr.data[k-ifirst] = (float) amp_out;
} else {
tr.data[k-ifirst] = zero;
}
}
tr.trid = 1;
tr.ns = nsv;
tr.delrt = nint ( dfirst );
tr.dt = nint(dt*1000);
puttr (&tr);
}
}
free1double (tr_amp);
free1double (depth);
free3float (velocity);
return EXIT_SUCCESS;
}