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emsa2edf.cpp
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emsa2edf.cpp
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/*
***************************************************************************
*
* Author: Teunis van Beelen
*
* Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 Teunis van Beelen
*
* Email: teuniz@gmail.com
*
***************************************************************************
*
* 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 "emsa2edf.h"
UI_EMSA2EDFwindow::UI_EMSA2EDFwindow(char *recent_dir, char *save_dir)
{
char txt_string[2048];
recent_opendir = recent_dir;
recent_savedir = save_dir;
myobjectDialog = new QDialog;
myobjectDialog->setMinimumSize(600, 480);
myobjectDialog->setMaximumSize(600, 480);
myobjectDialog->setWindowTitle("Emsa to EDF+ converter");
myobjectDialog->setModal(true);
myobjectDialog->setAttribute(Qt::WA_DeleteOnClose, true);
pushButton1 = new QPushButton(myobjectDialog);
pushButton1->setGeometry(20, 430, 100, 25);
pushButton1->setText("Select File");
pushButton2 = new QPushButton(myobjectDialog);
pushButton2->setGeometry(480, 430, 100, 25);
pushButton2->setText("Close");
textEdit1 = new QTextEdit(myobjectDialog);
textEdit1->setGeometry(20, 20, 560, 380);
textEdit1->setFrameStyle(QFrame::Panel | QFrame::Sunken);
textEdit1->setReadOnly(true);
textEdit1->setLineWrapMode(QTextEdit::NoWrap);
sprintf(txt_string, "Emsa to EDF+ converter.\n");
textEdit1->append(txt_string);
QObject::connect(pushButton1, SIGNAL(clicked()), this, SLOT(SelectFileButton()));
QObject::connect(pushButton2, SIGNAL(clicked()), myobjectDialog, SLOT(close()));
myobjectDialog->exec();
}
void UI_EMSA2EDFwindow::SelectFileButton()
{
FILE *inputfile=NULL,
*outputfile=NULL,
*logfile=NULL;
int i, j, k,
channels,
record_size,
samplefrequency,
hdrsize,
samples_in_record,
bufsize,
max_buf_records,
raster,
data_records,
records_in_buf,
error,
len,
seq_nr,
year,
b_year,
b_date,
seconds,
deci_seconds,
datrecduris1,
gender,
tallen=0,
annot_cnt=0,
patientcode=0,
annots_written=0,
time_on,
time_off,
duration_present=0;
long long filesize;
char path[MAX_PATH_LENGTH],
scratchpad[256],
*buf=NULL,
date[9],
time[9],
month[4],
patientname[128],
b_month[4],
*p,
equipment[41],
handedness[16],
weight[16],
birthdate[16],
txt_string[2048],
outputfilename[MAX_PATH_LENGTH];
union{
int number;
char str[4];
} var;
logbuf = NULL;
pushButton1->setEnabled(false);
strcpy(path, QFileDialog::getOpenFileName(0, "Select inputfile", QString::fromLocal8Bit(recent_opendir), "PLG files (*.plg *.PLG)").toLocal8Bit().data());
if(!strcmp(path, ""))
{
pushButton1->setEnabled(true);
return;
}
get_directory_from_path(recent_opendir, path, MAX_PATH_LENGTH);
/***************** check header ******************************/
inputfile = fopeno(path, "rb");
if(inputfile==NULL)
{
snprintf(txt_string, 2048, "Can not open file %s for reading.\n", path);
textEdit1->append(QString::fromLocal8Bit(txt_string));
pushButton1->setEnabled(true);
return;
}
fseeko(inputfile, 0LL, SEEK_END);
filesize = ftello(inputfile);
if(filesize<1538)
{
textEdit1->append("Error, filesize is too small.\n");
fclose(inputfile);
pushButton1->setEnabled(true);
return;
}
rewind(inputfile);
if(fread(scratchpad, 3, 1, inputfile)!=1)
{
textEdit1->append("Read error.\n");
fclose(inputfile);
pushButton1->setEnabled(true);
return;
}
if((strncmp(scratchpad, "PBJ", 3))&&(strncmp(scratchpad, "BPC", 3)))
{
textEdit1->append("Error, file id does not match.\n");
fclose(inputfile);
pushButton1->setEnabled(true);
return;
}
fseeko(inputfile, 3LL, SEEK_SET);
channels = fgetc(inputfile);
if(channels==EOF)
{
textEdit1->append("Read error.\n");
fclose(inputfile);
pushButton1->setEnabled(true);
return;
}
if(!channels)
{
textEdit1->append("Error, number of channels is 0.\n");
fclose(inputfile);
pushButton1->setEnabled(true);
return;
}
hdrsize = 1024 + (512 * channels);
if(filesize<(hdrsize + (2 * channels)))
{
textEdit1->append("Error, filesize is too small.\n");
fclose(inputfile);
pushButton1->setEnabled(true);
return;
}
fseeko(inputfile, 10LL, SEEK_SET);
samplefrequency = 256 * fgetc(inputfile);
fseeko(inputfile, 9LL, SEEK_SET);
samplefrequency += fgetc(inputfile);
if(!samplefrequency)
{
textEdit1->append("Error, samplefrequency is 0 Hz.\n");
fclose(inputfile);
pushButton1->setEnabled(true);
return;
}
if(filesize<(hdrsize + (2 * channels * samplefrequency)))
{
textEdit1->append("Error, filesize is too small.\n");
fclose(inputfile);
pushButton1->setEnabled(true);
return;
}
if(get_string(scratchpad, inputfile, 205, 32)!=8)
{
textEdit1->append("Error, can not read startdate.\n");
fclose(inputfile);
pushButton1->setEnabled(true);
return;
}
error = 0;
if((scratchpad[0]<'0')||(scratchpad[0]>'9')) error = 1;
if((scratchpad[1]<'0')||(scratchpad[1]>'9')) error = 1;
date[6] = scratchpad[2];
date[7] = scratchpad[3];
date[3] = scratchpad[4];
date[4] = scratchpad[5];
date[0] = scratchpad[6];
date[1] = scratchpad[7];
date[2] = 0;
date[5] = 0;
date[8] = 0;
if((date[0]<'0')||(date[0]>'9')) error = 1;
if((date[1]<'0')||(date[1]>'9')) error = 1;
if((date[3]<'0')||(date[3]>'9')) error = 1;
if((date[4]<'0')||(date[4]>'9')) error = 1;
if((date[6]<'0')||(date[6]>'9')) error = 1;
if((date[7]<'0')||(date[7]>'9')) error = 1;
scratchpad[4] = 0;
year = atoi(scratchpad);
if(get_string(scratchpad, inputfile, 214, 32)!=8)
{
textEdit1->append("Error, can not read starttime.\n");
fclose(inputfile);
pushButton1->setEnabled(true);
return;
}
strcpy(time, scratchpad);
if(time[2] != ':') error = 1;
if(time[5] != ':') error = 1;
time[2] = 0;
time[5] = 0;
time[8] = 0;
if((time[0]<'0')||(time[0]>'9')) error = 1;
if((time[1]<'0')||(time[1]>'9')) error = 1;
if((time[3]<'0')||(time[3]>'9')) error = 1;
if((time[4]<'0')||(time[4]>'9')) error = 1;
if((time[6]<'0')||(time[6]>'9')) error = 1;
if((time[7]<'0')||(time[7]>'9')) error = 1;
if((atoi(date)<1)||(atoi(date)>31)) error = 1;
if((atoi(date+3)<1)||(atoi(date+3)>12)) error = 1;
if(atoi(time)>23) error = 1;
if(atoi(time+3)>59) error = 1;
if(atoi(time+6)>59) error = 1;
if(error)
{
textEdit1->append("Error, can not read startdate or starttime.\n");
fclose(inputfile);
pushButton1->setEnabled(true);
return;
}
date[2] = '.';
date[5] = '.';
time[2] = '.';
time[5] = '.';
i = atoi(date+3);
switch(i)
{
case 1 : strcpy(month, "JAN");
break;
case 2 : strcpy(month, "FEB");
break;
case 3 : strcpy(month, "MAR");
break;
case 4 : strcpy(month, "APR");
break;
case 5 : strcpy(month, "MAY");
break;
case 6 : strcpy(month, "JUN");
break;
case 7 : strcpy(month, "JUL");
break;
case 8 : strcpy(month, "AUG");
break;
case 9 : strcpy(month, "SEP");
break;
case 10 : strcpy(month, "OCT");
break;
case 11 : strcpy(month, "NOV");
break;
case 12 : strcpy(month, "DEC");
break;
default : strcpy(month, "ERR");
break;
}
if(get_string(scratchpad, inputfile, 169, 32)!=8)
{
strcpy(birthdate, "X");
}
else
{
error = 0;
for(i=0; i<8; i++)
{
if((scratchpad[i]<'0')||(scratchpad[i]>'9')) error = 1;
}
scratchpad[8] = 0;
b_date = atoi(scratchpad+6);
if((b_date<1)||(b_date>31)) error = 1;
scratchpad[6] = 0;
i = atoi(scratchpad+4);
if((i<1)||(i>12)) error = 1;
switch(i)
{
case 1 : strcpy(b_month, "JAN");
break;
case 2 : strcpy(b_month, "FEB");
break;
case 3 : strcpy(b_month, "MAR");
break;
case 4 : strcpy(b_month, "APR");
break;
case 5 : strcpy(b_month, "MAY");
break;
case 6 : strcpy(b_month, "JUN");
break;
case 7 : strcpy(b_month, "JUL");
break;
case 8 : strcpy(b_month, "AUG");
break;
case 9 : strcpy(b_month, "SEP");
break;
case 10 : strcpy(b_month, "OCT");
break;
case 11 : strcpy(b_month, "NOV");
break;
case 12 : strcpy(b_month, "DEC");
break;
default : strcpy(b_month, "ERR");
break;
}
scratchpad[4] = 0;
b_year = atoi(scratchpad);
if(error)
{
strcpy(birthdate, "X");
}
else
{
sprintf(birthdate, "%02i-%s-%04i", b_date, b_month, b_year);
}
}
len = get_string(patientname, inputfile, 11, 30);
if(len)
{
latin1_to_ascii(patientname, len);
patientname[len] = 0;
for(i=0; i<len; i++)
{
if(patientname[i]==' ')
{
patientname[i] = '_';
}
}
}
else
{
strcpy(patientname, "X");
}
fseeko(inputfile, 4LL, SEEK_SET);
if(fread(var.str, 4, 1, inputfile)!=1)
{
textEdit1->append("Read error.\n");
fclose(inputfile);
pushButton1->setEnabled(true);
return;
}
fseeko(inputfile, 8LL, SEEK_SET);
seq_nr = fgetc(inputfile);
if(seq_nr==EOF)
{
textEdit1->append("Read error.\n");
fclose(inputfile);
pushButton1->setEnabled(true);
return;
}
fseeko(inputfile, 203LL, SEEK_SET);
gender = fgetc(inputfile);
if((gender!='M')&&(gender!='F'))
{
gender = 'X';
}
len = fgetc(inputfile);
switch(len)
{
case 'E' : strcpy(handedness, " lefthanded"); break;
case 'D' : strcpy(handedness, " righthanded"); break;
default : handedness[0] = 0; break;
}
len = get_string(weight + 1, inputfile, 351, 6);
if(len)
{
latin1_to_ascii(weight + 1, len);
weight[len] = 0;
weight[0] = ' ';
strcat(weight, " Kg");
}
else
{
weight[0] = 0;
}
len = get_string(equipment, inputfile, 309, 40);
if(len)
{
latin1_to_ascii(equipment, len);
equipment[len] = 0;
for(i=0; i<len; i++)
{
if(equipment[i]==' ')
{
equipment[i] = '_';
}
}
}
else
{
strcpy(equipment, "X");
}
if(samplefrequency%10)
{
samples_in_record = samplefrequency;
raster = samplefrequency * 2;
datrecduris1 = 1;
}
else
{
samples_in_record = samplefrequency / 10;
raster = (samplefrequency / 10) * 2;
datrecduris1 = 0;
}
record_size = samples_in_record * channels * 2;
data_records = (filesize - hdrsize) / record_size;
/***************** read logfile *****************************************/
remove_extension_from_filename(path);
strcat(path, ".LBK");
logfile = fopeno(path, "rb");
if(logfile==NULL)
{
remove_extension_from_filename(path);
strcat(path, ".lbk");
logfile = fopeno(path, "rb");
}
if(logfile!=NULL)
{
fseeko(logfile, 0LL, SEEK_END);
annot_cnt = ftello(logfile) / 69;
if(annot_cnt)
{
logbuf = (struct event_struct *)calloc(1, sizeof(struct event_struct[annot_cnt]));
if(logbuf==NULL)
{
textEdit1->append("Malloc error. (logbuf)\n");
fclose(inputfile);
fclose(logfile);
pushButton1->setEnabled(true);
return;
}
for(i=0; i<annot_cnt; i++)
{
if(get_string(scratchpad, logfile, i * 69, 10)!=8)
{
textEdit1->append("Error, can not read event starttime in .LBK file.\n");
fclose(inputfile);
fclose(logfile);
free(logbuf);
return;
}
if(scratchpad[2] != ':') error = 1;
if(scratchpad[5] != ':') error = 1;
scratchpad[2] = 0;
scratchpad[5] = 0;
scratchpad[8] = 0;
if((scratchpad[0]<'0')||(scratchpad[0]>'9')) error = 1;
if((scratchpad[1]<'0')||(scratchpad[1]>'9')) error = 1;
if((scratchpad[3]<'0')||(scratchpad[3]>'9')) error = 1;
if((scratchpad[4]<'0')||(scratchpad[4]>'9')) error = 1;
if((scratchpad[6]<'0')||(scratchpad[6]>'9')) error = 1;
if((scratchpad[7]<'0')||(scratchpad[7]>'9')) error = 1;
if(atoi(scratchpad)>23) error = 1;
if(atoi(scratchpad+3)>59) error = 1;
if(atoi(scratchpad+6)>59) error = 1;
if(error)
{
textEdit1->append("Error, can not read event starttime in .LBK file.\n");
fclose(inputfile);
fclose(logfile);
free(logbuf);
return;
}
time_on = atoi(scratchpad) * 3600;
time_on += atoi(scratchpad+3) * 60;
time_on += atoi(scratchpad+6);
if(get_string(scratchpad, logfile, i * 69 + 9, 10)!=8)
{
textEdit1->append("Error, can not read event stoptime in .LBK file.\n");
fclose(inputfile);
fclose(logfile);
free(logbuf);
return;
}
if(scratchpad[2] != ':') error = 1;
if(scratchpad[5] != ':') error = 1;
scratchpad[2] = 0;
scratchpad[5] = 0;
scratchpad[8] = 0;
if((scratchpad[0]<'0')||(scratchpad[0]>'9')) error = 1;
if((scratchpad[1]<'0')||(scratchpad[1]>'9')) error = 1;
if((scratchpad[3]<'0')||(scratchpad[3]>'9')) error = 1;
if((scratchpad[4]<'0')||(scratchpad[4]>'9')) error = 1;
if((scratchpad[6]<'0')||(scratchpad[6]>'9')) error = 1;
if((scratchpad[7]<'0')||(scratchpad[7]>'9')) error = 1;
if(atoi(scratchpad)>23) error = 1;
if(atoi(scratchpad+3)>59) error = 1;
if(atoi(scratchpad+6)>59) error = 1;
if(error)
{
textEdit1->append("Error, can not read event stoptime in .LBK file.\n");
fclose(inputfile);
fclose(logfile);
free(logbuf);
return;
}
time_off = atoi(scratchpad) * 3600;
time_off += atoi(scratchpad+3) * 60;
time_off += atoi(scratchpad+6);
logbuf[i].duration = time_off - time_on;
if(logbuf[i].duration<0)
{
textEdit1->append("Error, event duration in .LBK file is < 0.\n");
fclose(inputfile);
fclose(logfile);
free(logbuf);
return;
}
if(logbuf[i].duration)
{
duration_present = 1;
}
k = (atoi(time) * 3600);
k += (atoi(time+3) * 60);
k += atoi(time+6);
logbuf[i].onset = time_on - k;
if(logbuf[i].onset < 0)
{
logbuf[i].onset += 86400;
}
len = get_string(logbuf[i].description, logfile, i * 69 + 18, 40);
if(len>2)
{
for(j=len-1; j>0; j--)
{
if(logbuf[i].description[j]==' ')
{
logbuf[i].description[j] = 0;
len--;
}
else break;
}
}
latin1_to_utf8(logbuf[i].description, 80);
len = strlen(logbuf[i].description);
if(len>tallen)
{
tallen = len;
}
}
}
fclose(logfile);
}
else
{
textEdit1->append("Can not open LBK file, will continue without events.");
}
tallen += 14;
if(annot_cnt)
{
tallen += 14;
}
if(duration_present)
{
tallen += 14;
}
if(tallen%2)
{
tallen++;
}
/***************** write header *****************************************/
get_filename_from_path(outputfilename, path, MAX_PATH_LENGTH);
remove_extension_from_filename(outputfilename);
strcat(outputfilename, ".edf");
path[0] = 0;
if(recent_savedir[0]!=0)
{
strcpy(path, recent_savedir);
strcat(path, "/");
}
strcat(path, outputfilename);
strcpy(path, QFileDialog::getSaveFileName(0, "Output file", QString::fromLocal8Bit(path), "EDF files (*.edf *.EDF)").toLocal8Bit().data());
if(!strcmp(path, ""))
{
fclose(inputfile);
free(logbuf);
pushButton1->setEnabled(true);
return;
}
get_directory_from_path(recent_savedir, path, MAX_PATH_LENGTH);
outputfile = fopen(path, "wb");
if(outputfile==NULL)
{
snprintf(txt_string, 2048, "Error, can not open file %s for writing.\n", path);
textEdit1->append(QString::fromLocal8Bit(txt_string));
fclose(inputfile);
free(logbuf);
pushButton1->setEnabled(true);
return;
}
fprintf(outputfile, "0 ");
i = fprintf(outputfile, "%05i %c %s %s%s%s",
patientcode,
gender,
birthdate,
patientname,
handedness,
weight);
for(; i<80; i++)
{
fputc(' ', outputfile);
}
i = fprintf(outputfile, "Startdate %02i-%s-%04i %05i%02i X %s",
atoi(date),
month,
year,
patientcode,
seq_nr,
equipment);
for(; i<80; i++)
{
fputc(' ', outputfile);
}
if(fwrite(date, 8, 1, outputfile)!=1)
{
textEdit1->append("Write error.\n");
fclose(inputfile);
fclose(outputfile);
free(logbuf);
pushButton1->setEnabled(true);
return;
}
if(fwrite(time, 8, 1, outputfile)!=1)
{
textEdit1->append("Write error.\n");
fclose(inputfile);
fclose(outputfile);
free(logbuf);
pushButton1->setEnabled(true);
return;
}
fprintf(outputfile, "%-8i", (256 * (channels + 2)));
fprintf(outputfile, "EDF+C ");
fprintf(outputfile, "%-8u", data_records);
if(samplefrequency%10)
{
fprintf(outputfile, "1 ");
}
else
{
fprintf(outputfile, "0.1 ");
}
fprintf(outputfile, "%-4i", channels + 1);
for(i=0; i<channels; i++)
{
len = get_string(scratchpad, inputfile, 1034 + (i * 512), 16);
for(j=len; j<16; j++)
{
scratchpad[j] = ' ';
}
latin1_to_ascii(scratchpad, 16);
scratchpad[16] = 0;
fseeko(inputfile, (long long)(1025 + (i * 512)), SEEK_SET);
if((fgetc(inputfile)=='E')&&(len<13))
{
fprintf(outputfile, "EEG ");
if(fwrite(scratchpad, 12, 1, outputfile)!=1)
{
textEdit1->append("Write error.\n");
fclose(inputfile);
fclose(outputfile);
free(logbuf);
pushButton1->setEnabled(true);
return;
}
}
else
{
if(fwrite(scratchpad, 16, 1, outputfile)!=1)
{
textEdit1->append("Write error.\n");
fclose(inputfile);
fclose(outputfile);
free(logbuf);
pushButton1->setEnabled(true);
return;
}
}
}
if(fwrite("EDF Annotations ", 16, 1, outputfile)!=1)
{
textEdit1->append("Write error.\n");
fclose(inputfile);
fclose(outputfile);
free(logbuf);
pushButton1->setEnabled(true);
return;
}
for(i=0; i<(80*(channels+1)); i++)
{
fputc(' ', outputfile);
}
for(i=0; i<channels; i++)
{
fprintf(outputfile, "uV ");
}
fprintf(outputfile, " ");
for(i=0; i<channels; i++)
{
fprintf(outputfile, "-3276.8 ");
}
fprintf(outputfile, "-1 ");
for(i=0; i<channels; i++)
{
fprintf(outputfile, "3276.7 ");
}
fprintf(outputfile, "1 ");
for(i=0; i<(channels+1); i++)
{
fprintf(outputfile, "-32768 ");
}
for(i=0; i<(channels+1); i++)
{
fprintf(outputfile, "32767 ");
}
for(i=0; i<(80*(channels+1)); i++)
{
fputc(' ', outputfile);
}
for(i=0; i<channels; i++)
{
fprintf(outputfile, "%-8i", samples_in_record);
}
fprintf(outputfile, "%-8i", tallen / 2);
for(i=0; i<(32*(channels+1)); i++)
{
fputc(' ', outputfile);
}
/****************** start conversion *****************/
seconds = 0;
deci_seconds = 0;
record_size += tallen;
bufsize = 4194304;
if(record_size>bufsize)
{
bufsize = record_size;
}
buf = (char *)calloc(1, bufsize);
if(buf==NULL)
{
textEdit1->append("Malloc error. (buf)\n");
fclose(inputfile);
fclose(outputfile);
free(logbuf);
pushButton1->setEnabled(true);
return;
}
max_buf_records = bufsize / record_size;
fseeko(inputfile, (long long)(hdrsize), SEEK_SET);
while(data_records)
{
if(data_records>max_buf_records) records_in_buf = max_buf_records;
else records_in_buf = data_records;
for(i=0; i<records_in_buf; i++)
{
for(j=0; j<raster; j+=2)
{
for(k=0; k<channels; k++)
{
buf[j+(k*raster)+(i*record_size)] = fgetc(inputfile);
buf[j+(k*raster)+(i*record_size)+1] = fgetc(inputfile);
}
}
p = buf + (i * record_size) + (raster * channels);
if(datrecduris1)
{
len = sprintf(p, "%+i", seconds);
seconds++;
}
else
{
len = sprintf(p, "%+i.%i", seconds, deci_seconds);
if(++deci_seconds>9)
{
deci_seconds = 0;
seconds++;
}
}
p[len++] = 20;
p[len++] = 20;
if(annots_written<annot_cnt)
{
p[len++] = 0;
len += sprintf(p + len, "%+i", logbuf[annots_written].onset);
if(logbuf[annots_written].duration)
{
p[len++] = 21;
len += sprintf(p + len, "%i", logbuf[annots_written].duration);
}
p[len++] = 20;
len += sprintf(p + len, "%s", logbuf[annots_written].description);
p[len++] = 20;
annots_written++;
}
for(; len<tallen; len++)
{
p[len] = 0;
}
}
if(fwrite(buf, records_in_buf * record_size, 1, outputfile)!=1)
{
textEdit1->append("Write error.\n");
fclose(inputfile);
fclose(outputfile);
free(buf);
free(logbuf);
pushButton1->setEnabled(true);
return;
}
data_records -= records_in_buf;
}
free(logbuf);
free(buf);
fclose(inputfile);
fclose(outputfile);
snprintf(txt_string, 2048, "Done, your EDF+ file is %s\n", path);
textEdit1->append(QString::fromLocal8Bit(txt_string));
pushButton1->setEnabled(true);
}
int UI_EMSA2EDFwindow::get_string(char *str, FILE *file, int offset, int maxlen)
{
int len;
if(maxlen<1)
{
str[0] = 0;
return 0;
}
fseeko(file, (long long)(offset), SEEK_SET);
len = fgetc(file);
if(len==EOF)
{
str[0] = 0;
return 0;
}
if(len>maxlen)
{