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mexLoadAgilentTraces.c
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mexLoadAgilentTraces.c
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/*
* Copyright 2010-2014 Regents of the University of Minnesota.
* This file subject to terms of Creative Commons CC BY-NC 4.0, see LICENSE.html
* Copyright 2012 Michael Tesch. All rights reserved.
*
* author(s): Michael Tesch (tesch1@gmail.com),
*/
/*! \file
* \brief Load agilent traces into an array.
*
* \section Building
*
* Use mtmatpack_setup.m or mtagipack_setup.m
*
* \section Example
\verbatim
>> mexLoadAgilentTraces
Error using mexLoadAgilentTraces
usage: [traces mainh blockh] = mexLoadAgilentTraces(filename)
>> [t, mainh, blockh] = mexLoadAgilentTraces('/home/tesch/data/data.fid');
>> size(t)
ans =
256 3000 8
>> mainh
mainh =
nblocks: 8
ntraces: 3000
np: 256
ebytes: 4
tbytes: 2048
bbytes: 6144028
status: 69
vers_id: 0
nbheaders: 1
>> blockh
blockh =
status: [8x1 uint16]
scale: [8x1 uint16]
mode: [8x1 uint16]
index: [8x1 uint16]
ctcount: [8x1 int32]
lpval: [8x1 single]
rpval: [8x1 single]
lvl: [8x1 single]
tlt: [8x1 single]
>>
\endverbatim
*/
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include "premexh.h"
#include "mex.h"
#include "varian.h"
#include "mexCommons.h" // for mexStructToArray()
#define NARRAY(a) ((sizeof a) / sizeof (a)[0])
#define MH_FIELD_DEF(fname, ftype) {#fname, (size_t)&((vmain_header_t*)NULL)->fname, \
sizeof(((vmain_header_t*)NULL)->fname), ftype}
#define BH_FIELD_DEF(fname, ftype) {#fname, (size_t)&((vblock_header_t*)NULL)->fname, \
sizeof(((vblock_header_t*)NULL)->fname), ftype}
/*! descriptions of all fields in an varian main header
*/
static struct_fielddesc_t mheader_fields[] = {
MH_FIELD_DEF(nblocks, TY_S32),
MH_FIELD_DEF(ntraces, TY_S32),
MH_FIELD_DEF(np, TY_S32),
MH_FIELD_DEF(ebytes, TY_S32),
MH_FIELD_DEF(tbytes, TY_S32),
MH_FIELD_DEF(bbytes, TY_S32),
MH_FIELD_DEF(status, TY_U16),
MH_FIELD_DEF(vers_id, TY_U16),
MH_FIELD_DEF(nbheaders, TY_S32),
};
/*! descriptions of all fields in an varian block header
*/
static struct_fielddesc_t bheader_fields[] = {
BH_FIELD_DEF(status, TY_U16),
BH_FIELD_DEF(scale, TY_U16),
BH_FIELD_DEF(mode, TY_U16),
BH_FIELD_DEF(index, TY_U16),
BH_FIELD_DEF(ctcount, TY_S32),
BH_FIELD_DEF(lpval, TY_FLOAT),
BH_FIELD_DEF(rpval, TY_FLOAT),
BH_FIELD_DEF(lvl, TY_FLOAT),
BH_FIELD_DEF(tlt, TY_FLOAT),
};
#ifdef DOXYGEN
#define mexFunction mexLoadAgilentTraces
#endif
/* [traces dirs] = mexLoadAgilentTraces(filename) */
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
char * usage =
"usage: [traces mainh blockh] = mexLoadAgilentTraces(filename)\n";
char measfile[512];
vfile_info_t info;
mwSize outdims[3];
float *outdataR;
float *outdataI;
varian_printf = mexCommonsPrintfCallback;
if (nrhs != 1 || nlhs != 3 || !mxIsChar(prhs[0]))
mexErrMsgTxt(usage);
if (mxGetString(prhs[0], measfile, sizeof(measfile)))
mexErrMsgTxt(usage);
if (varian_load_info(measfile, &info)) {
mexWarnMsgTxt(measfile);
mexErrMsgTxt("cant load fid main header\n");
}
if (info.main_header.np * info.main_header.ntraces * info.main_header.nblocks == 0) {
mexErrMsgTxt("zero-sized data\n");
}
/* Construct outdata */
outdims[0] = info.main_header.np;
outdims[1] = info.main_header.ntraces;
outdims[2] = info.main_header.nblocks;
plhs[0] = mxCreateNumericArray(3, outdims, mxSINGLE_CLASS, mxCOMPLEX);
outdataR = mxGetData(plhs[0]);
outdataI = mxGetImagData(plhs[0]);
/* load scandata */
if (varian_load_fid(measfile,
info.main_header.ntraces * info.main_header.nblocks,
info.main_header.np,
outdataR, outdataI, 1, 0))
mexErrMsgTxt("error loading agilent traces\n");
plhs[1] = mexStructToArray(NARRAY(mheader_fields), mheader_fields, 1, &info.main_header);
plhs[2] = mexStructToArray(NARRAY(bheader_fields), bheader_fields, info.main_header.nblocks, info.block_headers);
varian_free_info(&info);
}