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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/>.
*/
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include "src/core/eegdev-pluginapi.h"
#include "src/core/coreinternals.h"
typedef float scaled_t;
unsigned int orignumch = 64;
unsigned int innumch = 72;
unsigned int chunklen = 72;
unsigned int inbuff_offset = 0;
#define NS 8192
#define NPOINT (orignumch*NS)
#define INNPOINT (innumch*NS)
#define NGRP 3
struct egdi_plugin_info info = {.struct_size = sizeof(struct eegdev)};
void init_inbufgrp(struct input_buffer_group* ibgrp, int ngrp)
{
int i, in_off = 0;
unsigned int lench, remch = orignumch;
for (i=0; i<ngrp; i++) {
lench = remch / (ngrp-i);
remch -= lench;
ibgrp[i].inlen = lench*sizeof(scaled_t);
ibgrp[i].in_offset = in_off+inbuff_offset*sizeof(scaled_t);
ibgrp[i].buff_offset=in_off;
ibgrp[i].cast_fn = egd_get_cast_fn(EGD_FLOAT, EGD_FLOAT, 0);
ibgrp[i].in_tsize = sizeof(scaled_t);
ibgrp[i].buff_tsize = sizeof(scaled_t);
in_off += ibgrp[i].inlen;
}
}
void init_buffer(scaled_t* buffer)
{
unsigned int ich,is;
for (ich=0; ich<orignumch; ich++) {
for (is=0; is<NS; is++) {
buffer[ich+is*orignumch] = (is % 17)+ich*3;
}
}
}
void copy_buffers(scaled_t* restrict out, scaled_t* restrict in, unsigned int ns)
{
unsigned int i;
out += inbuff_offset;
for (i=0; i<ns; i++) {
memcpy(out, in, orignumch*sizeof(scaled_t));
out += innumch;
in += orignumch;
}
}
int main(int argc, char* argv[])
{
int opt, retval = 0;
size_t len;
unsigned int i;
struct eegdev* dev;
scaled_t* inbuffer, *origbuffer;
char* ref, *test;
// Parse option
while ((opt = getopt(argc, argv, "s:S:o:c:")) != -1) {
if (opt == 's')
orignumch = atoi(optarg);
else if (opt == 'S')
innumch = atoi(optarg);
else if (opt == 'o')
inbuff_offset = atoi(optarg);
else if (opt == 'c')
chunklen = atoi(optarg);
else {
fprintf(stderr,
"Usage: verifycast [-s orignumch] [-S innumch]\n"
" [-o inbuff_offset] [-c chunklen]\n");
exit(EXIT_FAILURE);
}
}
origbuffer = malloc(NS*orignumch*sizeof(scaled_t));
inbuffer = malloc(NS*innumch*sizeof(scaled_t));
init_buffer(origbuffer);
copy_buffers(inbuffer, origbuffer, NS);
dev = egdi_create_eegdev(&info);
dev->inbuffgrp = malloc(NGRP*sizeof(*(dev->inbuffgrp)));
dev->ngrp = NGRP;
init_inbufgrp(dev->inbuffgrp, NGRP);
dev->acquiring = 1;
dev->buffer = malloc(NS*orignumch*sizeof(scaled_t));
dev->strides = NULL;
dev->arrconf = NULL;
dev->in_samlen = innumch*sizeof(scaled_t);
dev->buff_samlen = orignumch*sizeof(scaled_t);
dev->buffsize = NPOINT*sizeof(scaled_t);
dev->buff_ns = NS;
i = 0;
while (i<INNPOINT) {
len = (i + chunklen < INNPOINT) ? chunklen : INNPOINT-i;
dev->module.ci.update_ringbuffer(&dev->module, inbuffer + i, len*sizeof(scaled_t));
i+=chunklen;
dev->ns_read = dev->ns_written;
}
ref = (char*)origbuffer;
test = (char*)dev->buffer;
for (i=0; i<NS; i++) {
if (memcmp(ref, test, dev->buff_samlen)) {
fprintf(stderr, "mismatch at sample %i\n", i);
retval = 1;
break;
}
ref += dev->buff_samlen;
test += dev->buff_samlen;
}
egd_destroy_eegdev(dev);
free(origbuffer);
free(inbuffer);
return retval;
}
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