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/*
Copyright (C) 2010,2012 EPFL (Ecole Polytechnique Fédérale de Lausanne)
Laboratory CNBI (Chair in Non-Invasive Brain-Machine Interface)
Nicolas Bourdaud <nicolas.bourdaud@epfl.ch>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
//#include <sys/time.h>
#include <time.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <xdfio.h>
#include <unistd.h>
#include <errno.h>
#include <signal.h>
#include <sys/time.h>
#include <sys/resource.h>
#include "filecmp.h"
#define MAXFSIZE 60000
#define NSAMPLE 17
static off_t offskip[] = {168, 184, 236, 244};
static int nskip = sizeof(offskip)/(2*sizeof(offskip[0]));
static int recns;
int trycopy_xdffile(const char* genfilename, const char* reffilename, unsigned int fsize)
{
unsigned int samwarn = 0, currns = 0;
struct xdf *dst = NULL, *src = NULL;
struct xdfch *dstch, *srcch;
unsigned int ich = 0, samplesize;
size_t stride[1];
int nch, retcode = -1;
void* buffer = NULL;
ssize_t nssrc, nsdst;
src = xdf_open(reffilename, XDF_READ, XDF_ANY);
if (!src) {
fprintf(stderr,
"\tFailed opening reference file: (%i) %s\n",
errno, strerror(errno));
goto exit;
}
dst = xdf_open(genfilename, XDF_WRITE, XDF_BDF);
if (!dst) {
fprintf(stderr,
"\tFailed opening file for writing: (%i) %s\n",
errno, strerror(errno));
goto exit;
}
// Copy header and configuration
xdf_copy_conf(dst, src);
while ((srcch = xdf_get_channel(src, ich))) {
dstch = xdf_add_channel(dst, NULL);
if (xdf_copy_chconf(dstch, srcch)) {
fprintf(stderr, "\tFailed copying channel %i: (%i) %s\n",
ich, errno, strerror(errno));
goto exit;
}
ich++;
}
xdf_get_conf(src, XDF_F_NCHANNEL, &nch,
XDF_F_REC_NSAMPLE, &recns, XDF_NOF);
if (nch != (int)ich) {
fprintf(stderr, "\tich=%u, nch=%i\n", ich, nch);
goto exit;
}
samwarn = (fsize - 256*(nch+1)) / (nch*3);
samplesize = nch*4;
buffer = malloc(samplesize*NSAMPLE);
stride[0] = samplesize;
xdf_define_arrays(src, 1, stride);
xdf_define_arrays(dst, 1, stride);
xdf_prepare_transfer(src);
xdf_prepare_transfer(dst);
currns = 0;
while (1) {
nssrc = xdf_read(src, NSAMPLE, buffer);
if (nssrc < 0)
goto exit;
if (nssrc == 0)
break;
nsdst = xdf_write(dst, nssrc, buffer);
if (nsdst != nssrc) {
retcode = 1;
goto exit;
}
currns += nsdst;
}
exit:
if ( (currns > samwarn)
&& (currns < samwarn+2*recns)
&& (retcode == 1)
&& (errno == EFBIG) )
retcode = 0;
fprintf(stderr, "\tError caught: %s\n"
"\t\twhen adding %i samples after %u samples\n"
"\t\tsample lost: %u (record length: %i samples)\n"
"\t\tsamwarn=%u, retcode=%i\n",
strerror(errno), NSAMPLE, currns,
currns+NSAMPLE - samwarn, recns,
samwarn, retcode);
// Clean the structures and ressources
xdf_close(src);
xdf_close(dst);
free(buffer);
return retcode;
}
int main(int argc, char *argv[])
{
int retcode = 0, keep_file = 0, opt;
off_t pos = 0;
char genfilename[] = "essaiw.bdf";
char basename[] = "ref128-13-97-50-11-7-1.bdf";
char reffilename[128];
struct rlimit lim;
while ((opt = getopt(argc, argv, "k")) != -1) {
switch (opt) {
case 'k':
keep_file = 1;
break;
default: /* '?' */
fprintf(stderr, "Usage: %s [-k]\n",
argv[0]);
exit(EXIT_FAILURE);
}
}
fprintf(stderr, "\tVersion : %s\n", xdf_get_string());
// Create the filename for the reference
snprintf(reffilename, sizeof(reffilename),"%s/%s",
getenv("srcdir"),basename);
signal(SIGXFSZ, SIG_IGN);
getrlimit(RLIMIT_FSIZE, &lim);
lim.rlim_cur = MAXFSIZE;
if (setrlimit(RLIMIT_FSIZE, &lim)) {
fprintf(stderr, "limit could not have been set (error:%s)\n"
"Assume success without actual test\n",
strerror(errno));
return EXIT_SUCCESS;
}
unlink(genfilename);
retcode = trycopy_xdffile(genfilename, reffilename, MAXFSIZE);
if (!retcode) {
if (!cmp_files(genfilename, reffilename, nskip, offskip, &pos)
|| (pos < MAXFSIZE - recns*3) )
retcode = -1;
}
if (!keep_file)
unlink(genfilename);
return retcode;
}
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