/*{{{ write_rec_init(transform_info_ptr tinfo) {*/
METHODDEF void
write_rec_init(transform_info_ptr tinfo) {
struct write_rec_storage *local_arg=(struct write_rec_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
int bits=(args[ARGS_BITS].is_set ? args[ARGS_BITS].arg.i : DEFAULT_BITS);
local_arg->resolution=(args[ARGS_RESOLUTION].is_set ? args[ARGS_RESOLUTION].arg.d : 1.0);
local_arg->samples_per_record=args[ARGS_SAMPLES_PER_RECORD].is_set ? gettimeslice(tinfo, args[ARGS_SAMPLES_PER_RECORD].arg.s) : (tinfo->data_type==FREQ_DATA ? tinfo->nroffreq : tinfo->nr_of_points);
local_arg->current_sample=0L;
if ((local_arg->outbuf=(short *)malloc(tinfo->nr_of_channels*local_arg->samples_per_record*sizeof(short)))==NULL) {
ERREXIT(tinfo->emethods, "write_rec_init: Error allocating buffer memory.\n");
}
if (bits<1) {
ERREXIT1(tinfo->emethods, "write_rec_init: Invalid number of bits %d\n", MSGPARM(bits));
}
if (local_arg->resolution<=0.0) {
ERREXIT1(tinfo->emethods, "write_rec_init: A resolution<=0.0 is not allowed\n", MSGPARM(bits));
}
local_arg->digmin=(-1L<<(bits-1));
local_arg->digmax=(~local_arg->digmin);
local_arg->overflow_has_occurred=FALSE;
if (args[ARGS_CLOSE].is_set==FALSE) write_rec_open_file(tinfo);
tinfo->methods->init_done=TRUE;
}
/*{{{ write_mfx_init(transform_info_ptr tinfo) {*/
METHODDEF void
write_mfx_init(transform_info_ptr tinfo) {
struct write_mfx_storage *local_arg=(struct write_mfx_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
int NoOfChannels=tinfo->nr_of_channels;
int channel;
local_arg->mfxfile=mfx_open(args[ARGS_OFILE].arg.s, "r+b", MFX_DATATYPE);
if (!args[ARGS_APPEND].is_set || local_arg->mfxfile==NULL) { /* target does not exist*/
/*{{{ Create file*/
if (local_arg->mfxfile!=NULL) mfx_close(local_arg->mfxfile);
if ((local_arg->mfxfile=mfx_create(args[ARGS_OFILE].arg.s, (args[ARGS_CREATE_TRIGGERCHANNEL].is_set ? NoOfChannels+1 : NoOfChannels), MFX_DATATYPE))==NULL) {
ERREXIT1(tinfo->emethods, "write_mfx_init: Can't open file >%s<\n", MSGPARM(args[ARGS_OFILE].arg.s));
}
if (mfx_describefile(local_arg->mfxfile, tinfo->comment, 1.0/tinfo->sfreq, (args[ARGS_CONTINUOUS].is_set ? 0 : tinfo->nr_of_points), -tinfo->beforetrig/tinfo->sfreq)!=MFX_NOERR) {
ERREXIT1(tinfo->emethods, "write_mfx_init: mfx_describefile error %s\n", MSGPARM(mfx_errors[mfx_lasterr]));
}
for (channel=0; channel<NoOfChannels; channel++) {
double * const pos_mfx=local_arg->mfxfile->channelheaders[channel].position;
double * const pos_tinfo=tinfo->probepos+3*channel;
int i;
const Bool is_electric=(*tinfo->channelnames[channel]!='M');
if (mfx_describechannel(local_arg->mfxfile, channel+1, tinfo->channelnames[channel], (is_electric ? "uV" : "fT"),
(is_electric ? DT_EEGTYPE : DT_MEGTYPE), SHRT_MIN/args[ARGS_CONVFACTOR].arg.d, SHRT_MAX/args[ARGS_CONVFACTOR].arg.d)!=MFX_NOERR) {
ERREXIT1(tinfo->emethods, "write_mfx_init: mfx_describechannel error %s\n", MSGPARM(mfx_errors[mfx_lasterr]));
}
for (i=0; i<3; i++) {
pos_mfx[i]=pos_tinfo[i];
}
}
if (args[ARGS_CREATE_TRIGGERCHANNEL].is_set) {
if (mfx_describechannel(local_arg->mfxfile, channel+1, "TRIGGER", "T", DT_TRIGGER, -32768.0, 32767.0)!=MFX_NOERR) {
ERREXIT1(tinfo->emethods, "write_mfx_init: mfx_describechannel error %s\n", MSGPARM(mfx_errors[mfx_lasterr]));
}
}
/*}}} */
} else {
/*{{{ Append to file*/
mfx_seek(local_arg->mfxfile, 0L, SEEK_END);
/*}}} */
}
if ((local_arg->mfxfile->selected_channels=(int *)malloc(NoOfChannels*sizeof(int)))==NULL) {
ERREXIT(tinfo->emethods, "write_mfx_init: Error allocating selection array\n");
}
for (channel=0; channel<NoOfChannels; channel++) {
local_arg->mfxfile->selected_channels[channel]=channel+1;
}
local_arg->mfxfile->nr_of_channels_selected=NoOfChannels;
tinfo->methods->init_done=TRUE;
}
/*{{{ get_mfxepoch_init(transform_info_ptr tinfo)*/
METHODDEF void
get_mfxepoch_init(transform_info_ptr tinfo) {
struct get_mfxepoch_storage *local_arg=(struct get_mfxepoch_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
int skipepochs;
if ((local_arg->fileptr=mfx_open(args[ARGS_IFILE].arg.s, "rb", MFX_DATATYPE))==NULL) {
ERREXIT2(tinfo->emethods, "get_mfxepoch_init: Can't open mfx file %s: %s\n",
MSGPARM(args[ARGS_IFILE].arg.s), MSGPARM(mfx_errors[mfx_lasterr]));
}
if ((tinfo->nr_of_channels=mfx_cselect(local_arg->fileptr, args[ARGS_CHANNELNAMES].arg.s))==0) {
ERREXIT1(tinfo->emethods, "get_mfxepoch_init: mfx_cselect error %s\n",
MSGPARM(mfx_errors[mfx_lasterr]));
}
get_mfxinfo(local_arg->fileptr, tinfo);
get_mfxinfo_free(tinfo); /* We don't need the channel names etc. here */
/*{{{ Parse arguments that can be in seconds*/
local_arg->beforetrig=gettimeslice(tinfo, args[ARGS_BEFORETRIG].arg.s);
local_arg->aftertrig=gettimeslice(tinfo, args[ARGS_AFTERTRIG].arg.s);
local_arg->offset=(args[ARGS_OFFSET].is_set ? gettimeslice(tinfo, args[ARGS_OFFSET].arg.s) : 0);
/*}}} */
local_arg->fromepoch=(args[ARGS_FROMEPOCH].is_set ? args[ARGS_FROMEPOCH].arg.i : 1);
local_arg->epochs=(args[ARGS_EPOCHS].is_set ? args[ARGS_EPOCHS].arg.i : -1);
local_arg->trigname=(args[ARGS_TRIGNAME].is_set ? args[ARGS_TRIGNAME].arg.s : "TRIGGER");
if (strcmp(local_arg->trigname, "0")==0) {
local_arg->trigname=NULL;
local_arg->offset-= (long int)rint(local_arg->fileptr->fileheader.epoch_begin_latency*tinfo->sfreq);
local_arg->beforetrig+=local_arg->offset;
local_arg->aftertrig-=local_arg->offset;
}
skipepochs=local_arg->fromepoch-1;
/*{{{ Skip triggers if fromepoch parameter demands it*/
while (skipepochs>0) {
mfx_seektrigger(local_arg->fileptr, local_arg->trigname, args[ARGS_TRIGCODE].arg.i);
if (mfx_lasterr!=MFX_NOERR) {
ERREXIT(tinfo->emethods, "get_mfxepoch_init: Error seeking to first trigger\n");
}
skipepochs--;
}
/*}}} */
tinfo->methods->init_done=TRUE;
}
/*{{{ write_mfx(transform_info_ptr tinfo) {*/
METHODDEF DATATYPE *
write_mfx(transform_info_ptr tinfo) {
struct write_mfx_storage *local_arg=(struct write_mfx_storage *)tinfo->methods->local_storage;
/*{{{ Assert that epoch size didn't change & itemsize==1*/
if (tinfo->itemsize!=1) {
ERREXIT(tinfo->emethods, "write_mfx: Only itemsize=1 is supported.\n");
}
if (local_arg->mfxfile->nr_of_channels_selected!=tinfo->nr_of_channels) {
ERREXIT2(tinfo->emethods, "write_mfx: nr_of_channels was %d, now %d\n", MSGPARM(local_arg->mfxfile->nr_of_channels_selected), MSGPARM(tinfo->nr_of_channels));
}
/*}}} */
multiplexed(tinfo);
if (tinfo->data_type==FREQ_DATA) tinfo->nr_of_points=tinfo->nroffreq;
if (mfx_write((void *)tinfo->tsdata, tinfo->nr_of_points, local_arg->mfxfile)!=MFX_NOERR) {
ERREXIT1(tinfo->emethods, "write_mfx_init: mfx_write error %s\n", MSGPARM(mfx_errors[mfx_lasterr]));
}
return tinfo->tsdata; /* Simply to return something `useful' */
}
/*{{{ export_point(transform_info_ptr tinfo) {*/
METHODDEF DATATYPE *
export_point(transform_info_ptr tinfo) {
struct export_point_info *exp_info=(struct export_point_info *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
array_dump_format format=(args[ARGS_MATLAB].is_set ? ARRAY_MATLAB : ARRAY_ASCII);
int channel, itempart, i;
double *channelpos;
array myarray, newarray;
if (exp_info->pointno<0 || exp_info->pointno>=tinfo->nr_of_points) {
ERREXIT1(tinfo->emethods, "export_point: Point number %d is out of range.\n", MSGPARM(exp_info->pointno));
}
TRACEMS2(tinfo->emethods, 1, "export_point: Exporting point number %d to file %s\n", MSGPARM(exp_info->pointno), MSGPARM(args[ARGS_OFILE].arg.s));
if (args[ARGS_CLOSE].is_set) export_file_open(tinfo);
tinfo_array(tinfo, &myarray);
myarray.current_element=exp_info->pointno;
if (exp_info->channelcoords_to_display==0 && tinfo->itemsize==1) {
/*{{{ Don't need to build new array, just access tinfo*/
newarray=myarray;
array_transpose(&newarray);
array_setto_vector(&newarray); /* Select only one element */
array_transpose(&newarray);
/*}}} */
} else {
/*{{{ Build new array containing the data*/
newarray.nr_of_vectors=myarray.nr_of_vectors;
newarray.nr_of_elements=exp_info->channelcoords_to_display+tinfo->itemsize;
newarray.element_skip=1;
if (array_allocate(&newarray)==NULL) {
ERREXIT(tinfo->emethods, "export_point: Can't allocate output array\n");
}
for (channel=0; channel<tinfo->nr_of_channels; channel++) {
channelpos=tinfo->probepos+3*channel;
for (i=0; i<exp_info->channelcoords_to_display; i++) {
array_write(&newarray, channelpos[i]);
}
myarray.current_vector=channel;
for (itempart=0; itempart<tinfo->itemsize; itempart++) {
array_use_item(&myarray, itempart);
array_write(&newarray, READ_ELEMENT(&myarray));
}
}
/*}}} */
}
array_dump(exp_info->file, &newarray, format);
if (newarray.nr_of_elements>1) array_free(&newarray);
if (args[ARGS_CLOSE].is_set) export_file_close(tinfo);
return tinfo->tsdata;
}
/*{{{ scale_by_init(transform_info_ptr tinfo)*/
METHODDEF void
scale_by_init(transform_info_ptr tinfo) {
struct scale_by_storage *local_arg=(struct scale_by_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
if (args[ARGS_TYPE].is_set) {
local_arg->type=(enum scale_by_type)args[ARGS_TYPE].arg.i;
if (local_arg->type==SCALE_BY_NORMALIZE) {
ERREXIT(tinfo->emethods, "scale_by_init: Using '1.0' is deprecated. Please use 'invnorm' instead!\n");
}
} else {
local_arg->type=SCALE_BY_FACTOR;
}
if (local_arg->type==SCALE_BY_FACTOR
|| local_arg->type==SCALE_BY_INVQUANTILE || local_arg->type==SCALE_BY_INVPOINTQUANTILE
) {
if (!args[ARGS_FACTOR].is_set) {
ERREXIT(tinfo->emethods, "scale_by_init: A factor must be given!\n");
}
local_arg->factor=args[ARGS_FACTOR].arg.d;
if ((local_arg->type==SCALE_BY_INVQUANTILE || local_arg->type==SCALE_BY_INVPOINTQUANTILE)
&& (local_arg->factor<0 || local_arg->factor>1)) {
ERREXIT(tinfo->emethods, "scale_by_init: factor must be between 0 and 1 for quantile!\n");
}
}
if (args[ARGS_BYNAME].is_set) {
if (local_arg->type==SCALE_BY_INVQUANTILE) {
ERREXIT(tinfo->emethods, "scale_by_init: Channel name list does not work with invquantile!\n");
}
/* Note that this is NULL if no channel matched, which is why we need have_channel_list as well... */
local_arg->channel_list=expand_channel_list(tinfo, args[ARGS_BYNAME].arg.s);
local_arg->have_channel_list=TRUE;
} else {
local_arg->channel_list=NULL;
local_arg->have_channel_list=FALSE;
}
local_arg->fromitem=0;
local_arg->toitem=tinfo->itemsize-tinfo->leaveright-1;
if (args[ARGS_ITEMPART].is_set) {
local_arg->fromitem=local_arg->toitem=args[ARGS_ITEMPART].arg.i;
if (local_arg->fromitem<0 || local_arg->fromitem>=tinfo->itemsize) {
ERREXIT1(tinfo->emethods, "scale_by_init: No item number %d in file\n", MSGPARM(local_arg->fromitem));
}
}
tinfo->methods->init_done=TRUE;
}
/*{{{ export_file_open and export_file_close*/
LOCAL void
export_file_open(transform_info_ptr tinfo) {
struct export_point_info *exp_info=(struct export_point_info *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
if (strcmp(args[ARGS_OFILE].arg.s, "stdout")==0) {
exp_info->file=stdout;
} else if (strcmp(args[ARGS_OFILE].arg.s, "stderr")==0) {
exp_info->file=stderr;
} else {
if ((exp_info->file=fopen(args[ARGS_OFILE].arg.s, args[ARGS_APPEND].is_set ? "a" : "w"))==NULL) {
ERREXIT1(tinfo->emethods, "export_file_open: Can't open file >%s<\n", MSGPARM(args[ARGS_OFILE].arg.s));
}
}
}
/*{{{ write_vitaport(transform_info_ptr tinfo) {*/
METHODDEF DATATYPE *
write_vitaport(transform_info_ptr tinfo) {
struct write_vitaport_storage *local_arg=(struct write_vitaport_storage *)tinfo->methods->local_storage;
array myarray;
int channel;
/*{{{ Assert that epoch size didn't change & itemsize==1*/
if (tinfo->itemsize!=1) {
ERREXIT(tinfo->emethods, "write_vitaport: Only itemsize=1 is supported.\n");
}
if (local_arg->fileheader.knum!=tinfo->nr_of_channels) {
ERREXIT2(tinfo->emethods, "write_vitaport: nr_of_channels was %d, now %d\n", MSGPARM(local_arg->fileheader.knum), MSGPARM(tinfo->nr_of_channels));
}
/*}}} */
if (tinfo->data_type==FREQ_DATA) tinfo->nr_of_points=tinfo->nroffreq;
tinfo_array(tinfo, &myarray);
array_transpose(&myarray); /* channels are the elements: Temp file is interlaced */
do {
channel=0;
do {
DATATYPE dat=array_scan(&myarray);
if (fwrite(&dat, sizeof(DATATYPE), 1, local_arg->channelfile)!=1) {
ERREXIT(tinfo->emethods, "write_vitaport: Error writing temp file.\n");
}
/* Keep track of the scaling... */
if (dat>local_arg->channelmax[channel]) local_arg->channelmax[channel]=dat;
if (dat<local_arg->channelmin[channel]) local_arg->channelmin[channel]=dat;
channel++;
} while (myarray.message==ARRAY_CONTINUE);
} while (myarray.message!=ARRAY_ENDOFSCAN);
if (tinfo->triggers.buffer_start!=NULL) {
struct trigger *intrig=(struct trigger *)tinfo->triggers.buffer_start+1;
while (intrig->code!=0) {
push_trigger(&local_arg->triggers,local_arg->total_points+intrig->position,intrig->code,intrig->description);
intrig++;
}
}
local_arg->total_points+=tinfo->nr_of_points;
return tinfo->tsdata; /* Simply to return something `useful' */
}
/*{{{ echo_init(transform_info_ptr tinfo) {*/
METHODDEF void
echo_init(transform_info_ptr tinfo) {
struct echo_storage *local_arg=(struct echo_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
char const *inbuf=args[ARGS_STRING].arg.s;
growing_buf_init(&local_arg->buf);
growing_buf_allocate(&local_arg->buf, 0);
while (*inbuf !='\0') {
char c=*inbuf++;
if (c=='\\') {
char c1;
switch (c1=*inbuf++) {
case 'n':
c='\n';
break;
case 't':
c='\t';
break;
case '\0':
inbuf--;
break;
default:
c=c1;
break;
}
if (c=='\0') break;
}
growing_buf_appendchar(&local_arg->buf, c);
}
growing_buf_appendchar(&local_arg->buf, '\0');
if (!args[ARGS_OFILE].is_set) {
local_arg->outfile=NULL;
} else if (strcmp(args[ARGS_OFILE].arg.s, "stdout")==0) {
local_arg->outfile=stdout;
} else if (strcmp(args[ARGS_OFILE].arg.s, "stderr")==0) {
local_arg->outfile=stderr;
} else
if ((local_arg->outfile=fopen(args[ARGS_OFILE].arg.s, "a"))==NULL) {
ERREXIT1(tinfo->emethods, "echo_init: Can't open file >%s<\n", MSGPARM(args[ARGS_OFILE].arg.s));
}
tinfo->methods->init_done=TRUE;
}
/*{{{ null_source(transform_info_ptr tinfo) {*/
METHODDEF DATATYPE *
null_source(transform_info_ptr tinfo) {
struct null_source_storage *local_arg=(struct null_source_storage *)tinfo->methods->local_storage;
array myarray;
if (local_arg->epochs--==0) return NULL;
tinfo->beforetrig=local_arg->beforetrig;
tinfo->aftertrig=local_arg->aftertrig;
tinfo->nr_of_points=local_arg->beforetrig+local_arg->aftertrig;
tinfo->nr_of_channels=local_arg->nr_of_channels;
tinfo->nrofaverages=1;
if (tinfo->nr_of_points<=0) {
ERREXIT1(tinfo->emethods, "null_source: Invalid nr_of_points %d\n", MSGPARM(tinfo->nr_of_points));
}
/*{{{ Configure myarray*/
myarray.element_skip=tinfo->itemsize=local_arg->itemsize;
tinfo->multiplexed=FALSE;
myarray.nr_of_elements=tinfo->nr_of_points;
myarray.nr_of_vectors=tinfo->nr_of_channels;
if (array_allocate(&myarray)==NULL || (tinfo->comment=(char *)malloc(MAX_COMMENTLEN))==NULL) {
ERREXIT(tinfo->emethods, "null_source: Error allocating data\n");
}
/*}}} */
snprintf(tinfo->comment, MAX_COMMENTLEN, "null_source");
/* Force create_channelgrid to really allocate the channel info anew.
* Otherwise, free_tinfo will free someone else's data ! */
tinfo->channelnames=NULL; tinfo->probepos=NULL;
create_channelgrid(tinfo); /* Create defaults for any missing channel info */
local_arg->current_epoch=0;
tinfo->z_label=NULL;
tinfo->sfreq=local_arg->sfreq;
tinfo->tsdata=myarray.start;
tinfo->length_of_output_region=tinfo->nr_of_channels*tinfo->nr_of_points*tinfo->itemsize;
tinfo->leaveright=0;
tinfo->data_type=TIME_DATA;
local_arg->current_epoch++;
return tinfo->tsdata;
}
/*{{{ write_synamps(transform_info_ptr tinfo) {*/
METHODDEF DATATYPE *
write_synamps(transform_info_ptr calltinfo) {
struct write_synamps_storage *local_arg=(struct write_synamps_storage *)calltinfo->methods->local_storage;
transform_argument *args=calltinfo->methods->arguments;
NEUROSCAN_EPOCHED_SWEEP_HEAD sweephead;
long tsdata_step, tsdata_steps, tsdata_stepwidth;
array myarray;
/* Note that 'tinfo' instead of 'tinfoptr' is used here so that we don't have to modify
* all of the older code which stored only one epoch */
transform_info_ptr tinfo=calltinfo;
if (args[ARGS_LINKED].is_set) {
/* Go to the start: */
for (; tinfo->previous!=NULL; tinfo=tinfo->previous);
}
for (; tinfo!=NULL; tinfo=tinfo->next) {
DATATYPE * const orig_tsdata=tinfo->tsdata;
/*{{{ Assert that epoch size didn't change & itemsize==1*/
if (tinfo->itemsize!=1) {
ERREXIT(tinfo->emethods, "write_synamps: Only itemsize=1 is supported.\n");
}
if (local_arg->EEG.nchannels!=tinfo->nr_of_channels) {
ERREXIT2(tinfo->emethods, "write_synamps: nr_of_channels was %d, now %d\n", MSGPARM(local_arg->EEG.nchannels), MSGPARM(tinfo->nr_of_channels));
}
/*}}} */
if (tinfo->data_type==FREQ_DATA) {
tinfo->nr_of_points=tinfo->nroffreq;
tsdata_steps=tinfo->nrofshifts;
tsdata_stepwidth=tinfo->nr_of_channels*tinfo->nroffreq*tinfo->itemsize;
} else {
tsdata_steps=1;
tsdata_stepwidth=0;
}
for (tsdata_step=0; tsdata_step<tsdata_steps; tinfo->tsdata+=tsdata_stepwidth, tsdata_step++) {
switch (local_arg->output_format) {
case FORMAT_EEGFILE:
if (local_arg->EEG.pnts!=tinfo->nr_of_points) {
ERREXIT2(tinfo->emethods, "write_synamps: nr_of_points was %d, now %d\n", MSGPARM(local_arg->EEG.pnts), MSGPARM(tinfo->nr_of_points));
}
/*{{{ Set sweephead values*/
sweephead.accept=1;
sweephead.type=254;
sweephead.correct=0;
sweephead.rt=0;
sweephead.response=0;
if (tinfo->condition>0) {
sweephead.type=tinfo->condition&0xff;
} else if (tinfo->condition<0 && (-tinfo->condition)<=0xf) {
sweephead.type=0;
sweephead.response= -tinfo->condition;
} else {
/* KeyBoard event: Do it the same way 'Edit' does when epoching,
* mapping F1 to type=1 and so on (overlap with stim codes, but they
* should know how they want it...) */
sweephead.type= (-tinfo->condition)>>4;
}
/*}}} */
/*{{{ Write sweephead struct*/
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&sweephead, sm_NEUROSCAN_EPOCHED_SWEEP_HEAD);
# endif
write_struct((char *)&sweephead, sm_NEUROSCAN_EPOCHED_SWEEP_HEAD, local_arg->SCAN);
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&sweephead, sm_NEUROSCAN_EPOCHED_SWEEP_HEAD);
# endif
/*}}} */
local_arg->EEG.nsweeps++; /* This gets patched into the header by write_synamps_exit */
local_arg->EEG.compsweeps++;
local_arg->EEG.acceptcnt++;
break;
case FORMAT_AVGFILE:
if (local_arg->EEG.NumSamples!=0) {
ERREXIT(tinfo->emethods, "write_synamps: Only a single epoch may be written to an .AVG file!\n");
}
case FORMAT_CNTFILE:
if (tinfo->triggers.buffer_start!=NULL) {
struct trigger *intrig=(struct trigger *)tinfo->triggers.buffer_start+1;
while (intrig->code!=0) {
push_trigger(&local_arg->triggers,local_arg->EEG.NumSamples+intrig->position,intrig->code,intrig->description);
intrig++;
}
}
local_arg->EEG.NumSamples+=tinfo->nr_of_points;
break;
}
tinfo_array(tinfo, &myarray);
if (local_arg->output_format==FORMAT_AVGFILE) {
/* points are the elements */
float *pdata, * const buffer=(float *)malloc(myarray.nr_of_elements*sizeof(float));
const char *fill="\0\0\0\0\0";
if (buffer==NULL) {
ERREXIT(tinfo->emethods, "write_synamps: Error allocating AVGFILE buffer\n");
}
do {
int const channel=myarray.current_vector;
/* Write the `5-byte channel header that is no longer used' */
fwrite(fill, 1, 5, local_arg->SCAN);
pdata=buffer;
do {
*pdata=NEUROSCAN_FLOATCONV(&local_arg->Channels[channel], array_scan(&myarray));
# ifndef LITTLE_ENDIAN
Intel_float(pdata);
# endif
pdata++;
} while (myarray.message==ARRAY_CONTINUE);
if ((int)fwrite(buffer,sizeof(float),myarray.nr_of_elements,local_arg->SCAN)!=myarray.nr_of_elements) {
ERREXIT(tinfo->emethods, "write_synamps: Error writing data point\n");
}
} while (myarray.message!=ARRAY_ENDOFSCAN);
free(buffer);
} else {
int16_t * const buffer=(int16_t *)malloc(myarray.nr_of_vectors*sizeof(int16_t));
if (buffer==NULL) {
ERREXIT(tinfo->emethods, "write_synamps: Error allocating buffer\n");
}
array_transpose(&myarray); /* channels are the elements */
do {
int channel=0;
do {
DATATYPE hold=array_scan(&myarray), hold2;
/* Code anything exceeding the representable range, including +-Inf, as min/max representable value. */
hold2=NEUROSCAN_SHORTCONV(&local_arg->Channels[channel], hold);
if (hold2< -32768) hold2= -32768;
else if (hold2> 32767) hold2= 32767;
buffer[channel]=(int16_t)hold2;
# ifndef LITTLE_ENDIAN
Intel_int16(&buffer[channel]);
# endif
channel++;
} while (myarray.message==ARRAY_CONTINUE);
if ((int)fwrite(buffer,sizeof(int16_t),myarray.nr_of_elements,local_arg->SCAN)!=myarray.nr_of_elements) {
ERREXIT(tinfo->emethods, "write_synamps: Error writing data point\n");
}
} while (myarray.message!=ARRAY_ENDOFSCAN);
free(buffer);
}
} /* FREQ_DATA shifts loop */
tinfo->tsdata=orig_tsdata;
if (!args[ARGS_LINKED].is_set) {
break;
}
} /* Linked epochs loop */
return calltinfo->tsdata; /* Simply to return something `useful' */
}
/*{{{ write_rec_open_file(transform_info_ptr tinfo) {*/
LOCAL void
write_rec_open_file(transform_info_ptr tinfo) {
struct write_rec_storage *local_arg=(struct write_rec_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
FILE *outfptr=NULL;
if (strcmp(args[ARGS_OFILE].arg.s, "stdout")==0) outfptr=stdout;
else if (strcmp(args[ARGS_OFILE].arg.s, "stderr")==0) outfptr=stderr;
local_arg->appendmode=args[ARGS_APPEND].is_set;
if (local_arg->appendmode) {
/*{{{ Append mode open if cofile exists and is of non-zero length*/
if (outfptr==NULL) {
if ((outfptr=fopen(args[ARGS_OFILE].arg.s, "r+b"))!=NULL) {
fseek(outfptr, 0L, SEEK_END);
if (ftell(outfptr)==0L) {
local_arg->appendmode=FALSE; /* If at start: write header */
}
}
}
/*}}} */
}
if (outfptr==NULL) {
/*{{{ Open the REC file in truncate mode*/
local_arg->appendmode=FALSE; /* write header */
if ((outfptr=fopen(args[ARGS_OFILE].arg.s, "wb"))==NULL) {
ERREXIT1(tinfo->emethods, "write_rec_open_file: Can't open %s\n", MSGPARM(args[ARGS_OFILE].arg.s));
}
/*}}} */
}
local_arg->outfptr=outfptr;
if (local_arg->appendmode) {
/* Read rather than write header in append mode */
fseek(outfptr, 0L, SEEK_SET);
if (read_struct((char *)&local_arg->fheader, sm_REC_file, outfptr)==0) {
ERREXIT1(tinfo->emethods, "write_rec_open_file: Can't read header in file %s\n", MSGPARM(args[ARGS_OFILE].arg.s));
}
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&local_arg->fheader, sm_REC_file);
# endif
local_arg->nr_of_records=atoi(local_arg->fheader.nr_of_records);
fseek(outfptr, 0L, SEEK_END);
} else {
/*{{{ Write header*/
REC_channel_header channelheader;
const long channelheader_length=CHANNELHEADER_SIZE_PER_CHANNEL*tinfo->nr_of_channels;
int channel;
short dd, mm, yy, yyyy, hh, mi, ss;
char numbuf[NUMBUF_LENGTH];
setlocale(LC_NUMERIC, "C"); /* Print fractional numbers with decimal point */
#define fileheader local_arg->fheader
memset(&fileheader, ' ', sizeof(REC_file_header));
copy_nstring(fileheader.version, "0", sizeof(fileheader.version));
if (args[ARGS_PATIENT].is_set) copy_nstring(fileheader.patient, args[ARGS_PATIENT].arg.s, sizeof(fileheader.patient));
if (args[ARGS_RECORDING].is_set) copy_nstring(fileheader.recording, args[ARGS_RECORDING].arg.s, sizeof(fileheader.recording));
if (args[ARGS_DATETIME].is_set) {
char * const comma=strchr(args[ARGS_DATETIME].arg.s, ',');
if (comma==NULL) {
ERREXIT(tinfo->emethods, "write_rec_open_file: Datetime format is dd.mm.yy,hh.mi.ss !\n");
}
copy_nstring(fileheader.startdate, args[ARGS_DATETIME].arg.s, sizeof(fileheader.startdate));
copy_nstring(fileheader.starttime, comma+1, sizeof(fileheader.starttime));
} else if (tinfo->comment!=NULL) {
if (!args[ARGS_RECORDING].is_set) copy_nstring(fileheader.recording, tinfo->comment, sizeof(fileheader.recording));
if (comment2time(tinfo->comment, &dd, &mm, &yy, &yyyy, &hh, &mi, &ss)) {
snprintf(numbuf, NUMBUF_LENGTH, "%02d.%02d.%02d", dd, mm, yy);
copy_nstring(fileheader.startdate, numbuf, sizeof(fileheader.startdate));
snprintf(numbuf, NUMBUF_LENGTH, "%02d.%02d.%02d", hh, mi, ss);
copy_nstring(fileheader.starttime, numbuf, sizeof(fileheader.starttime));
}
}
if (*fileheader.startdate==' ') {
/* Date/time weren't set otherwise: */
copy_nstring(fileheader.startdate, "00.00.00", sizeof(fileheader.startdate));
copy_nstring(fileheader.starttime, "00.00.00", sizeof(fileheader.starttime));
}
snprintf(numbuf, NUMBUF_LENGTH, "%ld", sm_REC_file[0].offset+channelheader_length);
copy_nstring(fileheader.bytes_in_header, numbuf, sizeof(fileheader.bytes_in_header));
copy_nstring(fileheader.data_format_version, (args[ARGS_DATA_FORMAT_VERSION].is_set ? args[ARGS_DATA_FORMAT_VERSION].arg.s : "write_rec file"), sizeof(fileheader.data_format_version));
local_arg->nr_of_records=0;
copy_nstring(fileheader.nr_of_records, "-1", sizeof(fileheader.nr_of_records));
snprintf(numbuf, NUMBUF_LENGTH, "%g", ((double)local_arg->samples_per_record)/tinfo->sfreq);
copy_nstring(fileheader.duration_s, numbuf, sizeof(fileheader.duration_s));
snprintf(numbuf, NUMBUF_LENGTH, "%d", tinfo->nr_of_channels);
copy_nstring(fileheader.nr_of_channels, numbuf, sizeof(fileheader.nr_of_channels));
#ifndef LITTLE_ENDIAN
change_byteorder((char *)&fileheader, sm_REC_file);
#endif
write_struct((char *)&fileheader, sm_REC_file, outfptr);
#ifndef LITTLE_ENDIAN
change_byteorder((char *)&fileheader, sm_REC_file);
#endif
#undef fileheader
if ((channelheader.label=(char (*)[16])malloc(channelheader_length))==NULL) {
ERREXIT(tinfo->emethods, "write_rec_open_file: Error allocating channelheader memory\n");
}
channelheader.transducer=(char (*)[80])(channelheader.label+tinfo->nr_of_channels);
channelheader.dimension=(char (*)[8])(channelheader.transducer+tinfo->nr_of_channels);
channelheader.physmin=(char (*)[8])(channelheader.dimension+tinfo->nr_of_channels);
channelheader.physmax=(char (*)[8])(channelheader.physmin+tinfo->nr_of_channels);
channelheader.digmin=(char (*)[8])(channelheader.physmax+tinfo->nr_of_channels);
channelheader.digmax=(char (*)[8])(channelheader.digmin+tinfo->nr_of_channels);
channelheader.prefiltering=(char (*)[80])(channelheader.digmax+tinfo->nr_of_channels);
channelheader.samples_per_record=(char (*)[8])(channelheader.prefiltering+tinfo->nr_of_channels);
channelheader.reserved=(char (*)[32])(channelheader.samples_per_record+tinfo->nr_of_channels);
memset(channelheader.label, ' ', channelheader_length);
for (channel=0; channel<tinfo->nr_of_channels; channel++) {
copy_nstring(channelheader.dimension[channel], "uV", sizeof(channelheader.dimension[channel]));
copy_nstring(channelheader.label[channel], tinfo->channelnames[channel], sizeof(channelheader.label[channel]));
snprintf(numbuf, NUMBUF_LENGTH, "%g", (double)local_arg->digmin*local_arg->resolution);
copy_nstring(channelheader.physmin[channel], numbuf, sizeof(channelheader.physmin[channel]));
snprintf(numbuf, NUMBUF_LENGTH, "%g", (double)local_arg->digmax*local_arg->resolution);
copy_nstring(channelheader.physmax[channel], numbuf, sizeof(channelheader.physmax[channel]));
snprintf(numbuf, NUMBUF_LENGTH, "%ld", local_arg->digmin);
copy_nstring(channelheader.digmin[channel], numbuf, sizeof(channelheader.digmin[channel]));
snprintf(numbuf, NUMBUF_LENGTH, "%ld", local_arg->digmax);
copy_nstring(channelheader.digmax[channel], numbuf, sizeof(channelheader.digmax[channel]));
snprintf(numbuf, NUMBUF_LENGTH, "%ld", local_arg->samples_per_record);
copy_nstring(channelheader.samples_per_record[channel], numbuf, sizeof(channelheader.samples_per_record[channel]));
}
setlocale(LC_NUMERIC, ""); /* Reset locale to environment */
if (tinfo->nr_of_channels!=(int)fwrite((void *)channelheader.label, CHANNELHEADER_SIZE_PER_CHANNEL, tinfo->nr_of_channels, local_arg->outfptr)) {
ERREXIT(tinfo->emethods, "write_rec_open_file: Error writing channel headers\n");
}
free(channelheader.label);
/*}}} */
}
}
/*{{{ recode_init(transform_info_ptr tinfo) {*/
METHODDEF void
recode_init(transform_info_ptr tinfo) {
struct recode_storage *local_arg=(struct recode_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
growing_buf buf, tokenbuf;
struct blockdef *inblocks;
int nr_of_blocks=0, block;
Bool havearg;
if (args[ARGS_BYNAME].is_set) {
/* Note that this is NULL if no channel matched, which is why we need have_channel_list as well... */
local_arg->channel_list=expand_channel_list(tinfo, args[ARGS_BYNAME].arg.s);
local_arg->have_channel_list=TRUE;
} else {
local_arg->channel_list=NULL;
local_arg->have_channel_list=FALSE;
}
local_arg->fromitem=0;
local_arg->toitem=tinfo->itemsize-tinfo->leaveright-1;
if (args[ARGS_ITEMPART].is_set) {
local_arg->fromitem=local_arg->toitem=args[ARGS_ITEMPART].arg.i;
if (local_arg->fromitem<0 || local_arg->fromitem>=tinfo->itemsize) {
ERREXIT1(tinfo->emethods, "recode_init: No item number %d in file\n", MSGPARM(local_arg->fromitem));
}
}
growing_buf_init(&buf);
growing_buf_takethis(&buf, args[ARGS_BLOCKS].arg.s);
growing_buf_init(&tokenbuf);
growing_buf_allocate(&tokenbuf,0);
havearg=growing_buf_get_firsttoken(&buf,&tokenbuf);
while (havearg) {
nr_of_blocks++;
havearg=growing_buf_get_nexttoken(&buf,&tokenbuf);
}
havearg=growing_buf_get_firsttoken(&buf,&tokenbuf);
if (!havearg || nr_of_blocks%4!=0) {
ERREXIT(tinfo->emethods, "recode_init: Number of args must be divisible by 4.\n");
}
nr_of_blocks/=4;
if ((local_arg->blockdefs=(struct blockdef *)malloc(nr_of_blocks*sizeof(struct blockdef)))==NULL) {
ERREXIT(tinfo->emethods, "recode_init: Error allocating blockdefs memory\n");
}
for (inblocks=local_arg->blockdefs, block=0; havearg; block++, inblocks++) {
inblocks->fromstart=get_value(tokenbuf.buffer_start, NULL); growing_buf_get_nexttoken(&buf,&tokenbuf);
inblocks->fromend=get_value(tokenbuf.buffer_start, NULL); growing_buf_get_nexttoken(&buf,&tokenbuf);
inblocks->tostart=get_value(tokenbuf.buffer_start, NULL); growing_buf_get_nexttoken(&buf,&tokenbuf);
inblocks->toend=get_value(tokenbuf.buffer_start, NULL); havearg=growing_buf_get_nexttoken(&buf,&tokenbuf);
inblocks->last_block=(block==nr_of_blocks-1);
if (isnan(inblocks->fromstart) || isnan(inblocks->fromend)) {
if (!isnan(inblocks->fromstart) || !isnan(inblocks->fromend)) {
ERREXIT(tinfo->emethods, "recode_init: NaN cannot be mixed in from block!\n");
}
if (inblocks->tostart!=inblocks->toend) {
ERREXIT(tinfo->emethods, "recode_init: NaN can only be recoded to one value!\n");
}
}
if (isnan(inblocks->tostart) || isnan(inblocks->toend)) {
if (!isnan(inblocks->tostart) || !isnan(inblocks->toend)) {
ERREXIT(tinfo->emethods, "recode_init: NaN cannot be mixed in to block!\n");
}
}
}
growing_buf_free(&tokenbuf);
growing_buf_free(&buf);
tinfo->methods->init_done=TRUE;
}
/*{{{ project(transform_info_ptr tinfo)*/
METHODDEF DATATYPE *
project(transform_info_ptr tinfo) {
struct project_args_struct *project_args=(struct project_args_struct *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
DATATYPE *retvalue=tinfo->tsdata;
array indata, scalars, *vectors= &project_args->vectors;
int itempart, itemparts=tinfo->itemsize-tinfo->leaveright;
if (project_args->project_mode==PROJECT_MODE_MULTIPLY) {
if (!(tinfo->nr_of_channels==vectors->nr_of_vectors
||(tinfo->nr_of_channels==1 && tinfo->itemsize==vectors->nr_of_vectors))) {
ERREXIT(tinfo->emethods, "project: Number of scalars and maps doesn't match!\n");
}
} else {
if (vectors->nr_of_elements!=tinfo->nr_of_channels) {
ERREXIT2(tinfo->emethods, "project: %d channels in epoch, but %d channels in project file.\n", MSGPARM(tinfo->nr_of_channels), MSGPARM(vectors->nr_of_elements));
}
}
array_reset(vectors);
tinfo_array(tinfo, &indata);
array_transpose(&indata); /* Vectors are maps */
/* Be sure that different output items are adjacent... */
scalars.nr_of_elements=vectors->nr_of_vectors;
switch (project_args->project_mode) {
case PROJECT_MODE_SCALAR:
scalars.nr_of_vectors=tinfo->nr_of_points;
scalars.element_skip=itemparts;
break;
case PROJECT_MODE_SSP:
case PROJECT_MODE_SSPS:
scalars.nr_of_vectors=1;
scalars.element_skip=1;
break;
case PROJECT_MODE_MULTIPLY:
scalars=indata;
if (tinfo->nr_of_channels!=vectors->nr_of_vectors) {
/* Ie, one channel and weights in the items: Convert from 1 element to
* itemsize elements */
scalars.element_skip=1;
scalars.nr_of_elements=tinfo->itemsize;
itemparts=1;
}
indata.element_skip=itemparts;
indata.nr_of_elements=vectors->nr_of_elements; /* New number of channels */
indata.nr_of_vectors=scalars.nr_of_vectors; /* New number of points */
if (array_allocate(&indata)==NULL) {
ERREXIT(tinfo->emethods, "project: Can't allocate new indata array\n");
}
break;
}
if (project_args->project_mode==PROJECT_MODE_MULTIPLY) {
array_transpose(vectors); /* Now the elements are the subspace dimensions */
for (itempart=0; itempart<itemparts; itempart++) {
array_use_item(&indata, itempart);
array_use_item(&scalars, itempart);
do {
/*{{{ Build the signal subspace vector*/
do {
array_write(&indata, array_multiply(vectors, &scalars, MULT_SAMESIZE));
} while (indata.message==ARRAY_CONTINUE);
/*}}} */
} while (indata.message!=ARRAY_ENDOFSCAN);
}
array_transpose(vectors);
} else {
if (array_allocate(&scalars)==NULL) {
ERREXIT(tinfo->emethods, "project: Can't allocate scalars array\n");
}
for (itempart=0; itempart<itemparts; itempart++) {
array_use_item(&indata, itempart);
if (project_args->project_mode==PROJECT_MODE_SCALAR) {
array_use_item(&scalars, itempart);
}
do {
/*{{{ Calculate the projection scalars*/
do {
/* With all vectors in turn: */
DATATYPE product=0.0;
do {
if (project_args->channel_list!=NULL && !is_in_channellist(vectors->current_element+1, project_args->channel_list)) {
array_advance(vectors);
array_advance(&indata);
} else {
product+=array_scan(&indata)*array_scan(vectors);
}
} while (vectors->message==ARRAY_CONTINUE);
array_write(&scalars, product);
if (scalars.message==ARRAY_CONTINUE) array_previousvector(&indata);
} while (scalars.message==ARRAY_CONTINUE);
/*}}} */
switch (project_args->project_mode) {
case PROJECT_MODE_SCALAR:
break;
case PROJECT_MODE_SSP:
/*{{{ Build the signal subspace vector*/
array_transpose(vectors); /* Now the elements are the subspace dimensions */
array_previousvector(&indata);
do {
array_write(&indata, array_multiply(vectors, &scalars, MULT_VECTOR));
} while (indata.message==ARRAY_CONTINUE);
array_transpose(vectors);
/*}}} */
break;
case PROJECT_MODE_SSPS:
/*{{{ Subtract the signal subspace vector*/
array_transpose(vectors); /* Now the elements are the subspace dimensions */
array_previousvector(&indata);
do {
array_write(&indata, READ_ELEMENT(&indata)-array_multiply(vectors, &scalars, MULT_VECTOR));
} while (indata.message==ARRAY_CONTINUE);
array_transpose(vectors);
/*}}} */
break;
default:
/* Can't happen, just to keep the compiler happy... */
ERREXIT(tinfo->emethods, "project: This cannot happen!\n");
break;
}
} while (indata.message!=ARRAY_ENDOFSCAN);
}
}
/*{{{ Prepare tinfo to reflect the data structure returned*/
switch (project_args->project_mode) {
case PROJECT_MODE_SCALAR:
if (args[ARGS_USE_CHANNELS].is_set) {
tinfo->nr_of_channels=vectors->nr_of_vectors;
tinfo->itemsize=itemparts;
} else {
tinfo->nr_of_channels=1;
tinfo->itemsize=itemparts*vectors->nr_of_vectors;
}
tinfo->length_of_output_region=scalars.nr_of_elements*scalars.element_skip*scalars.nr_of_vectors;
tinfo->leaveright=0;
tinfo->multiplexed=TRUE;
if (tinfo->channelnames!=NULL) {
free_pointer((void **)&tinfo->channelnames[0]);
free_pointer((void **)&tinfo->channelnames);
}
free_pointer((void **)&tinfo->probepos);
create_channelgrid(tinfo);
retvalue=scalars.start;
break;
case PROJECT_MODE_SSP:
case PROJECT_MODE_SSPS:
array_free(&scalars);
retvalue=tinfo->tsdata;
break;
case PROJECT_MODE_MULTIPLY:
/* Note that we don't free `scalars' because it just points to the original tsdata! */
/* Have to set this correctly so that copy_channelinfo works... */
tinfo->nr_of_channels=indata.nr_of_elements;
copy_channelinfo(tinfo, project_args->save_side_tinfo.channelnames, project_args->save_side_tinfo.probepos);
tinfo->nr_of_points=indata.nr_of_vectors;
tinfo->itemsize=indata.element_skip;
tinfo->length_of_output_region=tinfo->nr_of_channels*tinfo->nr_of_points*tinfo->itemsize;
retvalue=indata.start;
tinfo->multiplexed=TRUE;
break;
}
/*}}} */
return retvalue;
}
/* This function has all the knowledge about events in the various file types */
LOCAL void
read_neurofile_build_trigbuffer(transform_info_ptr tinfo) {
struct read_neurofile_storage *local_arg=(struct read_neurofile_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
if (local_arg->triggers.buffer_start==NULL) {
growing_buf_allocate(&local_arg->triggers, 0);
} else {
growing_buf_clear(&local_arg->triggers);
}
if (args[ARGS_TRIGFILE].is_set) {
FILE * const triggerfile=(strcmp(args[ARGS_TRIGFILE].arg.s,"stdin")==0 ? stdin : fopen(args[ARGS_TRIGFILE].arg.s, "r"));
TRACEMS(tinfo->emethods, 1, "read_neurofile_build_trigbuffer: Reading event file\n");
if (triggerfile==NULL) {
ERREXIT1(tinfo->emethods, "read_neurofile_build_trigbuffer: Can't open trigger file >%s<\n", MSGPARM(args[ARGS_TRIGFILE].arg.s));
}
while (TRUE) {
long trigpoint;
char *description;
int const code=read_trigger_from_trigfile(triggerfile, tinfo->sfreq, &trigpoint, &description);
if (code==0) break;
push_trigger(&local_arg->triggers, trigpoint, code, description);
free_pointer((void **)&description);
}
if (triggerfile!=stdin) fclose(triggerfile);
} else {
TRACEMS(tinfo->emethods, 0, "read_neurofile_build_trigbuffer: No trigger source known.\n");
}
}
/*{{{ read_neurofile(transform_info_ptr tinfo) {*/
METHODDEF DATATYPE *
read_neurofile(transform_info_ptr tinfo) {
struct read_neurofile_storage *local_arg=(struct read_neurofile_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
array myarray;
FILE *infile=local_arg->infile;
Bool not_correct_trigger=FALSE;
long trigger_point, file_start_point, file_end_point;
char *innamebuf;
int channel;
char *description=NULL;
if (local_arg->epochs--==0) return NULL;
tinfo->beforetrig=local_arg->beforetrig;
tinfo->aftertrig=local_arg->aftertrig;
tinfo->nr_of_points=local_arg->beforetrig+local_arg->aftertrig;
tinfo->nr_of_channels=local_arg->nr_of_channels;
tinfo->nrofaverages=1;
if (tinfo->nr_of_points<=0) {
ERREXIT1(tinfo->emethods, "read_neurofile: Invalid nr_of_points %d\n", MSGPARM(tinfo->nr_of_points));
}
/*{{{ Find the next window that fits into the actual data*/
/* This is just for the Continuous option (no trigger file): */
file_end_point=local_arg->current_point-1;
do {
if (args[ARGS_CONTINUOUS].is_set) {
/* Simulate a trigger at current_point+beforetrig */
file_start_point=file_end_point+1;
trigger_point=file_start_point+tinfo->beforetrig;
file_end_point=trigger_point+tinfo->aftertrig-1;
if (local_arg->points_in_file>0 && file_end_point>=local_arg->points_in_file) return NULL;
local_arg->current_trigger++;
local_arg->current_point+=tinfo->nr_of_points;
tinfo->condition=0;
} else
do {
tinfo->condition=read_neurofile_read_trigger(tinfo, &trigger_point, &description);
if (tinfo->condition==0) return NULL; /* No more triggers in file */
file_start_point=trigger_point-tinfo->beforetrig+local_arg->offset;
file_end_point=trigger_point+tinfo->aftertrig-1-local_arg->offset;
if (local_arg->trigcodes==NULL) {
not_correct_trigger=FALSE;
} else {
int trigno=0;
not_correct_trigger=TRUE;
while (local_arg->trigcodes[trigno]!=0) {
if (local_arg->trigcodes[trigno]==tinfo->condition) {
not_correct_trigger=FALSE;
break;
}
trigno++;
}
}
} while (not_correct_trigger || file_start_point<0 || (local_arg->points_in_file>0 && file_end_point>=local_arg->points_in_file));
} while (--local_arg->fromepoch>0);
if (description==NULL) {
TRACEMS3(tinfo->emethods, 1, "read_neurofile: Reading around tag %d at %d, condition=%d\n", MSGPARM(local_arg->current_trigger), MSGPARM(trigger_point), MSGPARM(tinfo->condition));
} else {
TRACEMS4(tinfo->emethods, 1, "read_neurofile: Reading around tag %d at %d, condition=%d, description=%s\n", MSGPARM(local_arg->current_trigger), MSGPARM(trigger_point), MSGPARM(tinfo->condition), MSGPARM(description));
}
/*{{{ Handle triggers within the epoch (option -T)*/
if (args[ARGS_TRIGTRANSFER].is_set) {
int trigs_in_epoch, code;
long trigpoint;
long const old_current_trigger=local_arg->current_trigger;
char *thisdescription;
/* First trigger entry holds file_start_point */
push_trigger(&tinfo->triggers, file_start_point, -1, NULL);
read_neurofile_reset_triggerbuffer(tinfo);
for (trigs_in_epoch=1; (code=read_neurofile_read_trigger(tinfo, &trigpoint, &thisdescription))!=0;) {
if (trigpoint>=file_start_point && trigpoint<=file_end_point) {
push_trigger(&tinfo->triggers, trigpoint-file_start_point, code, thisdescription);
trigs_in_epoch++;
}
}
push_trigger(&tinfo->triggers, 0, 0, NULL); /* End of list */
local_arg->current_trigger=old_current_trigger;
}
/*}}} */
fseek(infile, file_start_point*tinfo->nr_of_channels, SEEK_SET);
/*{{{ Configure myarray*/
myarray.element_skip=tinfo->itemsize=1;
tinfo->multiplexed=TRUE;
myarray.nr_of_elements=tinfo->nr_of_channels;
myarray.nr_of_vectors=tinfo->nr_of_points;
if (array_allocate(&myarray)==NULL ||
(tinfo->channelnames=(char **)malloc(tinfo->nr_of_channels*sizeof(char *)))==NULL ||
(innamebuf=(char *)malloc(local_arg->stringlength))==NULL ||
(tinfo->comment=(char *)malloc(strlen((char *)local_arg->seq.comment)+(1+17+1)))==NULL) {
ERREXIT(tinfo->emethods, "read_neurofile: Error allocating data\n");
}
/*}}} */
sprintf(tinfo->comment, "%s %02d/%02d/%02d,%02d:%02d:%02d", local_arg->seq.comment, local_arg->seq.month, local_arg->seq.day, local_arg->seq.year, local_arg->seq.hour, local_arg->seq.minute, local_arg->seq.second);
for (channel=0; channel<tinfo->nr_of_channels; channel++) {
strcpy(innamebuf, (char *)local_arg->seq.elnam[channel]);
tinfo->channelnames[channel]=innamebuf;
innamebuf+=strlen(innamebuf)+1;
}
do {
signed char exponent;
short delta;
if (fread(&exponent, sizeof(exponent), 1, infile)!=1) {
ERREXIT(tinfo->emethods, "read_neurofile: Error reading data\n");
}
delta=exponent;
exponent&=0x03;
if (exponent==0x03) {
delta>>=2;
} else {
delta=(delta&0xfffc)<<(exponent*2);
}
local_arg->last_values[myarray.current_element]+=delta;
array_write(&myarray, local_arg->last_values[myarray.current_element]*local_arg->factor);
} while (myarray.message!=ARRAY_ENDOFSCAN);
/*{{{ writeasc_open_file(transform_info_ptr tinfo) {*/
LOCAL void
writeasc_open_file(transform_info_ptr tinfo) {
struct writeasc_storage *local_arg=(struct writeasc_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
FILE *outfptr=NULL;
Bool append_mode=args[ARGS_APPEND].is_set;
if (strcmp(args[ARGS_OFILE].arg.s, "stdout")==0) outfptr=stdout;
else if (strcmp(args[ARGS_OFILE].arg.s, "stderr")==0) outfptr=stderr;
if (append_mode) {
/*{{{ Append mode open*/
if (outfptr==NULL) {
if ((outfptr=fopen(args[ARGS_OFILE].arg.s, "a+b"))==NULL) {
ERREXIT1(tinfo->emethods, "writeasc_init: Can't append to %s\n", MSGPARM(args[ARGS_OFILE].arg.s));
}
}
fseek(outfptr, 0L, 2);
/* It is important here to overwrite the append_mode flag only for THIS open
* operation, because writeasc_open_file will get called repeatedly if -c is
* also set, and then the file will already be there the second time and we want
* to append to it... */
if (ftell(outfptr)==0L) append_mode=FALSE; /* If at start: write header */
/*}}} */
}
if (outfptr==NULL) {
/*{{{ Truncate mode open*/
if ((outfptr=fopen(args[ARGS_OFILE].arg.s, "wb"))==NULL) {
ERREXIT1(tinfo->emethods, "writeasc_init: Can't open %s\n", MSGPARM(args[ARGS_OFILE].arg.s));
}
/*}}} */
}
local_arg->outfptr=outfptr;
if (append_mode) {
/* Don't write header in append mode.
* Also set the local_arg values to (nearly) impossible numbers in order to
* force these values to be assigned in the epoch header */
local_arg->sfreq= -123456789;
local_arg->beforetrig= -123456789;
local_arg->leaveright= -123456789;
} else {
if (args[ARGS_BINARY].is_set) {
/*{{{ Write binary header*/
char outbuf[OUTBUFSIZE], *inoutbuf;
unsigned short shortbuf=ASC_BF_MAGIC;
fwrite((void *)&shortbuf, 2, 1, outfptr);
inoutbuf=outbuf;
snprintf(inoutbuf, OUTBUFSIZE-(inoutbuf-outbuf), "Sfreq=%f\n", (float)tinfo->sfreq);
inoutbuf+=strlen(inoutbuf);
if (tinfo->beforetrig>0) {
snprintf(inoutbuf, OUTBUFSIZE-(inoutbuf-outbuf), "BeforeTrig=%d\n", tinfo->beforetrig);
inoutbuf+=strlen(inoutbuf);
}
if (tinfo->leaveright>0) {
snprintf(inoutbuf, OUTBUFSIZE-(inoutbuf-outbuf), "Leaveright=%d\n", tinfo->leaveright);
inoutbuf+=strlen(inoutbuf);
}
shortbuf=inoutbuf-outbuf;
fwrite((void *)&shortbuf, 2, 1, outfptr);
fwrite((void *)outbuf, (int)shortbuf, 1, outfptr);
/*}}} */
} else {
/*{{{ Write ascii header*/
fprintf(outfptr, "Sfreq=%f\n", (float)tinfo->sfreq);
if (tinfo->beforetrig>0) fprintf(outfptr, "BeforeTrig=%d\n", tinfo->beforetrig);
if (tinfo->leaveright>0) fprintf(outfptr, "Leaveright=%d\n", tinfo->leaveright);
/*}}} */
}
local_arg->sfreq=tinfo->sfreq;
local_arg->beforetrig=tinfo->beforetrig;
local_arg->leaveright=tinfo->leaveright;
}
}
GLOBAL struct source_desc *
var_random_srcmodule(transform_info_ptr tinfo, char **args) {
int n_harmonics, n_noisedips, i, n_dipoles;
char **inargs=args;
DATATYPE *memptr;
float random_pos=0.0, random_moment=0.0;
double freq_default=0.1;
struct source_desc *sourcep;
struct dipole_desc *dipolep;
if (args==(char **)NULL) {
ERREXIT(tinfo->emethods, "var_random_srcmodule: Usage: var_random_dipoles ( n_harmonics n_noisedips )\n");
}
if (*inargs!=NULL) n_harmonics=atoi(*inargs++);
if (*inargs!=NULL) n_noisedips=atoi(*inargs++);
if (inargs-args!=2) {
ERREXIT(tinfo->emethods, "var_random_srcmodule: Need at least two arguments ( n_harmonics n_noisedips )\n");
}
n_dipoles=n_harmonics+n_noisedips;
if ((sourcep=(struct source_desc *)malloc(sizeof(struct source_desc)+(sizeof(struct dipole_desc)+3*3*sizeof(DATATYPE))*n_dipoles))==NULL) {
ERREXIT(tinfo->emethods, "var_random_srcmodule: Error allocating memory\n");
}
sourcep->nrofsources=n_dipoles;
dipolep=sourcep->dipoles=(struct dipole_desc *)(sourcep+1);
memptr=(DATATYPE *)(dipolep+n_dipoles);
for (i=0; i<n_dipoles; i++, dipolep++, memptr+=9) {
dipolep->position.start=memptr;
dipolep->dip_moment.start=memptr+3;
dipolep->initial_moment.start=memptr+6;
/*{{{ Read switchable options: FREQ_DEFAULT, RANDOM_POS, RANDOM_MOMENT keyword*/
if (*inargs!=NULL && strcmp(*inargs, "FREQ_DEFAULT")==0) {
if (*++inargs!=NULL) {
freq_default=atof(*inargs);
inargs++;
}
}
if (*inargs!=NULL && strcmp(*inargs, "RANDOM_POS")==0) {
if (*++inargs!=NULL) {
random_pos=atof(*inargs);
inargs++;
}
}
if (*inargs!=NULL && strcmp(*inargs, "RANDOM_MOMENT")==0) {
if (*++inargs!=NULL) {
random_moment=atof(*inargs);
inargs++;
}
}
/*}}} */
dipolep->position.nr_of_elements=dipolep->dip_moment.nr_of_elements=dipolep->initial_moment.nr_of_elements=3;
dipolep->position.nr_of_vectors=dipolep->dip_moment.nr_of_vectors=dipolep->initial_moment.nr_of_vectors=1;
dipolep->position.element_skip=dipolep->dip_moment.element_skip=dipolep->initial_moment.element_skip=1;
dipolep->position.vector_skip=dipolep->dip_moment.vector_skip=dipolep->initial_moment.vector_skip=3;
array_setreadwrite(&dipolep->position);
array_setreadwrite(&dipolep->dip_moment);
array_setreadwrite(&dipolep->initial_moment);
array_reset(&dipolep->position);
array_reset(&dipolep->dip_moment);
array_reset(&dipolep->initial_moment);
/* The parameter is the frequency relative to half the sampling frequency: */
dipolep->time[1]=M_PI*readval(tinfo, &inargs, freq_default);
if (dipolep->time[1]<=0) {
ERREXIT1(tinfo->emethods, "var_random_srcmodule: Frequency==%d\n", MSGPARM(dipolep->time[1]));
}
if (random_pos>0.0) {
float x, y, z;
sphere_random(random_pos, &x, &y, &z);
array_write(&dipolep->position, readval(tinfo, &inargs, x));
array_write(&dipolep->position, readval(tinfo, &inargs, y));
array_write(&dipolep->position, readval(tinfo, &inargs, z));
} else {
array_write(&dipolep->position, readval(tinfo, &inargs, 1));
array_write(&dipolep->position, readval(tinfo, &inargs, 1));
array_write(&dipolep->position, readval(tinfo, &inargs, 7.5));
}
if (random_moment>0.0) {
float x, y, z;
sphere_random(random_moment, &x, &y, &z);
array_write(&dipolep->dip_moment, readval(tinfo, &inargs, x));
array_write(&dipolep->dip_moment, readval(tinfo, &inargs, y));
array_write(&dipolep->dip_moment, readval(tinfo, &inargs, z));
} else {
array_write(&dipolep->dip_moment, readval(tinfo, &inargs, 1));
array_write(&dipolep->dip_moment, readval(tinfo, &inargs, 0));
array_write(&dipolep->dip_moment, readval(tinfo, &inargs, 0));
}
if (i<n_harmonics) {
/*{{{ Set harmonic behaviour*/
dipolep->time_function_init= &harmonic_time_init;
dipolep->time_function= &harmonic_time;
dipolep->time_function_exit= &harmonic_time_exit;
/*}}} */
} else {
/*{{{ Set noise behaviour*/
dipolep->time_function_init= &noise_time_init;
dipolep->time_function= &noise_time;
dipolep->time_function_exit= &noise_time_exit;
/*}}} */
}
}
return sourcep;
}
/*{{{ project_init(transform_info_ptr tinfo)*/
METHODDEF void
project_init(transform_info_ptr tinfo) {
struct project_args_struct *project_args=(struct project_args_struct *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
transform_info_ptr side_tinfo= &project_args->side_tinfo;
array *vectors= &project_args->vectors;
growing_buf buf;
#define BUFFER_SIZE 80
char buffer[BUFFER_SIZE];
side_tinfo->methods= &project_args->methods;
side_tinfo->emethods=tinfo->emethods;
select_readasc(side_tinfo);
growing_buf_init(&buf);
growing_buf_allocate(&buf, 0);
if (args[ARGS_FROMEPOCH].is_set) {
snprintf(buffer, BUFFER_SIZE, "-f %ld ", args[ARGS_FROMEPOCH].arg.i);
growing_buf_appendstring(&buf, buffer);
}
if (args[ARGS_EPOCHS].is_set) {
project_args->epochs=args[ARGS_EPOCHS].arg.i;
if (project_args->epochs<=0) {
ERREXIT(tinfo->emethods, "project_init: The number of epochs must be positive.\n");
}
} else {
project_args->epochs=1;
}
snprintf(buffer, BUFFER_SIZE, "-e %d ", project_args->epochs);
growing_buf_appendstring(&buf, buffer);
growing_buf_appendstring(&buf, args[ARGS_PROJECTFILE].arg.s);
if (!buf.can_be_freed || !setup_method(side_tinfo, &buf)) {
ERREXIT(tinfo->emethods, "project_init: Error setting readasc arguments.\n");
}
project_args->points=(args[ARGS_POINTS].is_set ? args[ARGS_POINTS].arg.i : 1);
project_args->nr_of_item=(args[ARGS_NROFITEM].is_set ? args[ARGS_NROFITEM].arg.i : 0);
project_args->orthogonalize_vectors_first=args[ARGS_ORTHOGONALIZE].is_set;
if (args[ARGS_SUBSPACE].is_set) {
project_args->project_mode=PROJECT_MODE_SSP;
} else if (args[ARGS_SUBTRACT_SUBSPACE].is_set) {
project_args->project_mode=PROJECT_MODE_SSPS;
} else if (args[ARGS_MULTIPLY].is_set) {
project_args->project_mode=PROJECT_MODE_MULTIPLY;
} else {
project_args->project_mode=PROJECT_MODE_SCALAR;
}
if (args[ARGS_CHANNELNAMES].is_set) {
project_args->channel_list=expand_channel_list(tinfo, args[ARGS_CHANNELNAMES].arg.s);
if (project_args->channel_list==NULL) {
ERREXIT(tinfo->emethods, "project_init: Zero channels were selected by -N!\n");
}
} else {
project_args->channel_list=NULL;
}
(*side_tinfo->methods->transform_init)(side_tinfo);
/*{{{ Read first project_file epoch and allocate vectors array accordingly*/
if ((side_tinfo->tsdata=(*side_tinfo->methods->transform)(side_tinfo))==NULL) {
ERREXIT(tinfo->emethods, "project_init: Can't get the first project epoch.\n");
}
if (project_args->project_mode==PROJECT_MODE_MULTIPLY) {
/* Save channel names and positions for later */
project_args->save_side_tinfo.nr_of_channels=side_tinfo->nr_of_channels;
copy_channelinfo(&project_args->save_side_tinfo, side_tinfo->channelnames, side_tinfo->probepos);
}
if (project_args->points==0) project_args->points=side_tinfo->nr_of_points;
if (project_args->points>side_tinfo->nr_of_points) {
ERREXIT1(tinfo->emethods, "project_init: There are only %d points in the project_file epoch.\n", MSGPARM(side_tinfo->nr_of_points));
}
if (args[ARGS_AT_XVALUE].is_set) {
project_args->nr_of_point=find_pointnearx(side_tinfo, (DATATYPE)atof(args[ARGS_NROFPOINT].arg.s));
} else {
project_args->nr_of_point=gettimeslice(side_tinfo, args[ARGS_NROFPOINT].arg.s);
}
vectors->nr_of_vectors=project_args->epochs*project_args->points;
vectors->nr_of_elements=side_tinfo->nr_of_channels;
vectors->element_skip=1;
if (array_allocate(vectors)==NULL) {
ERREXIT(tinfo->emethods, "project_init: Error allocating vectors memory\n");
}
/*}}} */
do {
/*{{{ Copy [points] vectors from project_file to vectors array*/
array indata;
int point;
if (vectors->nr_of_elements!=side_tinfo->nr_of_channels) {
ERREXIT(side_tinfo->emethods, "project_init: Varying channel numbers in project file!\n");
}
if (project_args->nr_of_point>=side_tinfo->nr_of_points) {
ERREXIT2(side_tinfo->emethods, "project_init: nr_of_point=%d, nr_of_points=%d\n", MSGPARM(project_args->nr_of_point), MSGPARM(side_tinfo->nr_of_points));
}
if (project_args->nr_of_item>=side_tinfo->itemsize) {
ERREXIT2(side_tinfo->emethods, "project_init: nr_of_item=%d, itemsize=%d\n", MSGPARM(project_args->nr_of_item), MSGPARM(side_tinfo->itemsize));
}
for (point=0; point<project_args->points; point++) {
tinfo_array(side_tinfo, &indata);
array_transpose(&indata); /* Vector = map */
if (vectors->nr_of_elements!=indata.nr_of_elements) {
ERREXIT(side_tinfo->emethods, "project_init: vector size doesn't match\n");
}
indata.current_vector=project_args->nr_of_point+point;
array_setto_vector(&indata);
array_use_item(&indata, project_args->nr_of_item);
array_copy(&indata, vectors);
}
/*}}} */
free_tinfo(side_tinfo);
} while ((side_tinfo->tsdata=(*side_tinfo->methods->transform)(side_tinfo))!=NULL);
if (vectors->message!=ARRAY_ENDOFSCAN) {
ERREXIT1(tinfo->emethods, "project_init: Less than %d epochs in project file\n", MSGPARM(vectors->nr_of_vectors));
}
/*{{{ Set unused channels to zero if requested*/
if (args[ARGS_ZERO_UNUSEDCOEFFICIENTS].is_set) {
if (project_args->channel_list!=NULL) {
do {
do {
if (is_in_channellist(vectors->current_element+1, project_args->channel_list)) {
array_advance(vectors);
} else {
array_write(vectors, 0.0);
}
} while (vectors->message==ARRAY_CONTINUE);
} while (vectors->message!=ARRAY_ENDOFSCAN);
} else {
ERREXIT(tinfo->emethods, "project_init: Option -z only makes sense in combination with -N!\n");
}
}
/*}}} */
/*{{{ De-mean vectors if requested*/
if (args[ARGS_CORRELATION].is_set) {
do {
DATATYPE mean=0.0;
int nrofaverages=0;
do {
if (project_args->channel_list!=NULL && !is_in_channellist(vectors->current_element+1, project_args->channel_list)) {
array_advance(vectors);
} else {
mean+=array_scan(vectors);
nrofaverages++;
}
} while (vectors->message==ARRAY_CONTINUE);
mean/=nrofaverages;
array_previousvector(vectors);
do {
array_write(vectors, READ_ELEMENT(vectors)-mean);
} while (vectors->message==ARRAY_CONTINUE);
} while (vectors->message!=ARRAY_ENDOFSCAN);
}
/*}}} */
/*{{{ Orthogonalize vectors if requested*/
if (project_args->orthogonalize_vectors_first) {
array_make_orthogonal(vectors);
if (vectors->message==ARRAY_ERROR) {
ERREXIT(tinfo->emethods, "project_init: Error orthogonalizing projection vectors\n");
}
}
/*}}} */
if (!args[ARGS_NONORMALIZATION].is_set) {
/*{{{ Normalize vectors*/
do {
DATATYPE length=0.0;
do {
if (project_args->channel_list!=NULL && !is_in_channellist(vectors->current_element+1, project_args->channel_list)) {
array_advance(vectors);
} else {
const DATATYPE hold=array_scan(vectors);
length+=hold*hold;
}
} while (vectors->message==ARRAY_CONTINUE);
length=sqrt(length);
array_previousvector(vectors);
if (length==0.0) {
ERREXIT1(tinfo->emethods, "project_init: Vector %d has zero length !\n", MSGPARM(vectors->current_vector));
}
array_scale(vectors, 1.0/length);
} while (vectors->message!=ARRAY_ENDOFSCAN);
/*}}} */
}
/*{{{ Dump vectors if requested*/
if (args[ARGS_DUMPVECTORS].is_set) {
FILE * const fp=fopen(args[ARGS_DUMPVECTORS].arg.s, "w");
if (fp==NULL) {
ERREXIT1(tinfo->emethods, "project_init: Error opening output file >%s<.\n", MSGPARM(args[ARGS_DUMPVECTORS].arg.s));
}
array_transpose(vectors); /* We want one vector to be one column */
array_dump(fp, vectors, ARRAY_MATLAB);
array_transpose(vectors);
fclose(fp);
}
/*}}} */
(*side_tinfo->methods->transform_exit)(side_tinfo);
free_methodmem(side_tinfo);
growing_buf_free(&buf);
tinfo->methods->init_done=TRUE;
}
/* This function not only seeks to the specified point, but also reads
* the point into the buffer if necessary. The get_singlepoint function
* then only transfers the data. */
LOCAL void
read_synamps_seek_point(transform_info_ptr tinfo, long point) {
struct read_synamps_storage *local_arg=(struct read_synamps_storage *)tinfo->methods->local_storage;
switch(local_arg->SubType) {
case NST_CONT0:
case NST_DCMES:
case NST_CONTINUOUS:
case NST_SYNAMPS: {
/*{{{ */
const int points_per_buf=local_arg->EEG.ChannelOffset/local_arg->bytes_per_sample; /* Note a value of 1 is fixed in read_synamps_init */
long const buffer_boundary=(point/points_per_buf)*points_per_buf;
long const new_last_point_in_buffer=buffer_boundary+points_per_buf-1;
/* This format is neither points fastest nor channels fastest, but
* points fastest in blocks. No idea why they didn't do channels fastest,
* it would have rendered the whole file in one order, no matter what buffer
* size is used internally in programs. This way we MUST use the given buffers. */
if (new_last_point_in_buffer!=local_arg->last_point_in_buffer) {
fseek(local_arg->SCAN,point2offset(tinfo,buffer_boundary),SEEK_SET);
if (fread(local_arg->buffer,1,local_arg->BufferCount,local_arg->SCAN)!=local_arg->BufferCount) {
ERREXIT(tinfo->emethods, "read_synamps_seek_point: Error reading data\n");
}
local_arg->first_point_in_buffer=buffer_boundary;
local_arg->last_point_in_buffer=new_last_point_in_buffer;
/*{{{ Swap byte order if necessary*/
# ifndef LITTLE_ENDIAN
{uint16_t *pdata=(uint16_t *)local_arg->buffer, *p_end=(uint16_t *)((char *)local_arg->buffer+local_arg->BufferCount);
while (pdata<p_end) Intel_int16(pdata++);
}
# endif
/*}}} */
}
/*}}} */
}
break;
default:
ERREXIT1(tinfo->emethods, "read_synamps_seek_point: Format `%s' is not yet supported\n", MSGPARM(neuroscan_subtype_names[local_arg->SubType]));
break;
}
local_arg->current_point=point;
}
/*{{{ read_synamps_get_singlepoint(transform_info_ptr tinfo, array *toarray) {*/
LOCAL int
read_synamps_get_singlepoint(transform_info_ptr tinfo, array *toarray) {
struct read_synamps_storage *local_arg=(struct read_synamps_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
if (local_arg->current_point>=local_arg->EEG.NumSamples) return -1;
read_synamps_seek_point(tinfo, local_arg->current_point);
switch(local_arg->SubType) {
case NST_DCMES: {
/* DC-MES data is unsigned, and the marker channel is skipped: */
unsigned short *pdata=(unsigned short *)local_arg->buffer+local_arg->current_point-local_arg->first_point_in_buffer+1;
int channel=0;
do {
*pdata^=0x8000; /* Exclusive or to convert to signed... */
if (args[ARGS_NOBADCHANS].is_set && local_arg->Channels[channel].bad) {
toarray->message=ARRAY_CONTINUE;
} else {
array_write(toarray, NEUROSCAN_CONVSHORT(&local_arg->Channels[channel], *((signed short *)pdata)));
}
pdata+=local_arg->EEG.ChannelOffset/local_arg->bytes_per_sample;
channel++;
} while (toarray->message==ARRAY_CONTINUE);
}
break;
case NST_CONT0:
case NST_CONTINUOUS:
case NST_SYNAMPS: {
int channel=0;
do {
DATATYPE val;
if (args[ARGS_NOBADCHANS].is_set && local_arg->Channels[channel].bad) {
toarray->message=ARRAY_CONTINUE;
} else {
if (local_arg->bytes_per_sample==2) {
int16_t * const pdata=((int16_t *)local_arg->buffer)+local_arg->current_point-local_arg->first_point_in_buffer+channel;
# ifndef LITTLE_ENDIAN
Intel_int16(pdata);
# endif
val=NEUROSCAN_CONVSHORT(&local_arg->Channels[channel],*pdata);
} else if (local_arg->bytes_per_sample==4) {
int32_t * const pdata=((int32_t *)local_arg->buffer)+local_arg->current_point-local_arg->first_point_in_buffer+channel;
# ifndef LITTLE_ENDIAN
Intel_int32(pdata);
# endif
val=NEUROSCAN_CONVSHORT(&local_arg->Channels[channel],*pdata);
} else {
ERREXIT(tinfo->emethods, "read_synamps: Unknown bytes_per_sample\n");
}
array_write(toarray, val);
}
channel++;
} while (toarray->message==ARRAY_CONTINUE);
}
break;
default:
ERREXIT1(tinfo->emethods, "read_synamps_get_singlepoint: Format `%s' is not yet supported\n", MSGPARM(neuroscan_subtype_names[local_arg->SubType]));
break;
}
local_arg->current_point++;
return 0;
}
/* This subroutine encapsulates the coding of the different event codes
* into a unified signed code */
LOCAL void
read_synamps_push_keys(transform_info_ptr tinfo, long position, int TrigVal, int KeyPad, int KeyBoard, enum NEUROSCAN_ACCEPTVALUES Accept) {
struct read_synamps_storage * const local_arg=(struct read_synamps_storage *)tinfo->methods->local_storage;
int code;
if (Accept!=0 && (Accept<NAV_DCRESET || Accept>NAV_STARTSTOP)) {
TRACEMS2(tinfo->emethods, 0, "read_synamps_push_keys: Unknown Accept value %d at position %d!\n", MSGPARM(Accept), MSGPARM(position));
return;
}
code=TrigVal-KeyPad+neuroscan_accept_translation[Accept];
if (code==0) {
/* At least in Edit 4.x, KeyPad F2 is written as KeyBoard=0 with everything else 0 too... */
code= -(((KeyBoard&0xf)+1)<<4);
}
if (code==0) {
TRACEMS1(tinfo->emethods, 0, "read_synamps_push_keys: Trigger with trigcode 0 at position %d!\n", MSGPARM(position));
} else {
push_trigger(&local_arg->triggers, position, code, NULL);
}
}
/*{{{ write_synamps_exit(transform_info_ptr tinfo) {*/
METHODDEF void
write_synamps_exit(transform_info_ptr tinfo) {
struct write_synamps_storage *local_arg=(struct write_synamps_storage *)tinfo->methods->local_storage;
#define SETUP_OFFSET_NSWEEPS 360
#define SETUP_OFFSET_NUMSAMPLES 864
#define SETUP_OFFSET_EVENTTABLEPOS 886
/* Apparently NeuroScan write this even for epoched files although there's no event table there...
* It is important there to compute bytes_per_sample */
local_arg->EEG.EventTablePos=ftell(local_arg->SCAN);
if (local_arg->output_format==FORMAT_CNTFILE) {
TEEG TagType;
EVENT1 event;
int const nevents=local_arg->triggers.current_length/sizeof(struct trigger);
int n;
TagType.Teeg=TEEG_EVENT_TAB1;
TagType.Size=(nevents+1)*sm_EVENT1[0].offset; /* sm_EVENT1[0].offset is sizeof(EVENT1) in the file. */
TagType.p_o.Offset=0L;
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&TagType, sm_TEEG);
# endif
write_struct((char *)&TagType, sm_TEEG, local_arg->SCAN);
for (n=0; n<nevents; n++) {
struct trigger * const intrig=((struct trigger *)local_arg->triggers.buffer_start)+n;
int acc=NAV_STARTSTOP, type=0, resp=0, keyboard=0;
while (acc>=0 && intrig->code!=neuroscan_accept_translation[acc]) acc--;
if (acc<0) {
acc=0;
if (intrig->code>0) {
type=intrig->code;
} else {
resp=(-intrig->code)&0xf;
if (resp==0) {
keyboard=(-intrig->code)>>4;
if (keyboard==0) {
TRACEMS1(tinfo->emethods, 1, "write_synamps_exit: Can't decipher event code %d\n", MSGPARM(intrig->code));
} else {
keyboard--;
}
}
}
}
/*{{{ read_neurofile_init(transform_info_ptr tinfo) {*/
METHODDEF void
read_neurofile_init(transform_info_ptr tinfo) {
struct read_neurofile_storage *local_arg=(struct read_neurofile_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
int channel;
FILE *dsc;
#ifdef __GNUC__
char filename[strlen(args[ARGS_IFILE].arg.s)+5];
#else
char filename[MAX_PATHLEN];
#endif
growing_buf_init(&local_arg->triggers);
strcpy(filename, args[ARGS_IFILE].arg.s);
strcat(filename, ".dsc");
if((dsc=fopen(filename, "rb"))==NULL) {
ERREXIT1(tinfo->emethods, "read_neurofile_init: Can't open dsc file >%s<\n", MSGPARM(filename));
}
if (read_struct((char *)&local_arg->seq, sm_sequence, dsc)==0) {
ERREXIT1(tinfo->emethods, "read_neurofile_init: Can't read header in file >%s<\n", MSGPARM(filename));
}
fclose(dsc);
#ifndef LITTLE_ENDIAN
change_byteorder((char *)&local_arg->seq, sm_sequence);
#endif
local_arg->points_in_file = 256L*local_arg->seq.length;
tinfo->points_in_file=local_arg->points_in_file;
tinfo->sfreq=local_arg->sfreq=neurofile_map_sfreq(local_arg->seq.fastrate);
local_arg->nr_of_channels=local_arg->seq.nfast;
local_arg->factor=local_arg->seq.gain/1000.0;
local_arg->stringlength=0;
for (channel=0; channel<local_arg->nr_of_channels; channel++) {
local_arg->stringlength+=strlen((char *)local_arg->seq.elnam[channel])+1;
}
/*{{{ Process options*/
local_arg->fromepoch=(args[ARGS_FROMEPOCH].is_set ? args[ARGS_FROMEPOCH].arg.i : 1);
local_arg->epochs=(args[ARGS_EPOCHS].is_set ? args[ARGS_EPOCHS].arg.i : -1);
/*}}} */
/*{{{ Parse arguments that can be in seconds*/
local_arg->beforetrig=tinfo->beforetrig=gettimeslice(tinfo, args[ARGS_BEFORETRIG].arg.s);
local_arg->aftertrig=tinfo->aftertrig=gettimeslice(tinfo, args[ARGS_AFTERTRIG].arg.s);
local_arg->offset=(args[ARGS_OFFSET].is_set ? gettimeslice(tinfo, args[ARGS_OFFSET].arg.s) : 0);
/*}}} */
strcpy(filename+strlen(args[ARGS_IFILE].arg.s), ".eeg");
if((local_arg->infile=fopen(filename, "rb"))==NULL) {
ERREXIT1(tinfo->emethods, "read_neurofile_init: Can't open file >%s<\n", MSGPARM(filename));
}
if ((local_arg->last_values=(DATATYPE *)calloc(local_arg->nr_of_channels, sizeof(DATATYPE)))==NULL) {
ERREXIT(tinfo->emethods, "read_neurofile_init: Error allocating last_values memory\n");
}
local_arg->trigcodes=NULL;
if (!args[ARGS_CONTINUOUS].is_set) {
/* The actual trigger file is read when the first event is accessed! */
if (args[ARGS_TRIGLIST].is_set) {
local_arg->trigcodes=get_trigcode_list(args[ARGS_TRIGLIST].arg.s);
if (local_arg->trigcodes==NULL) {
ERREXIT(tinfo->emethods, "read_neurofile_init: Error allocating triglist memory\n");
}
}
} else {
if (local_arg->aftertrig==0) {
/* Continuous mode: If aftertrig==0, automatically read up to the end of file */
if (local_arg->points_in_file==0) {
ERREXIT(tinfo->emethods, "read_neurofile: Unable to determine the number of samples in the input file!\n");
}
local_arg->aftertrig=local_arg->points_in_file-local_arg->beforetrig;
}
}
read_neurofile_reset_triggerbuffer(tinfo);
local_arg->current_trigger=0;
local_arg->current_point=0;
tinfo->filetriggersp=&local_arg->triggers;
tinfo->methods->init_done=TRUE;
}
/*{{{ write_synamps_init(transform_info_ptr tinfo) {*/
METHODDEF void
write_synamps_init(transform_info_ptr tinfo) {
struct write_synamps_storage *local_arg=(struct write_synamps_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
double xmin, xmax, ymin, ymax;
int NoOfChannels=tinfo->nr_of_channels;
int channel;
growing_buf_init(&local_arg->triggers);
local_arg->output_format=(args[ARGS_OUTPUTFORMAT].is_set ? (enum output_formats)args[ARGS_OUTPUTFORMAT].arg.i : FORMAT_EEGFILE);
local_arg->SCAN=fopen(args[ARGS_OFILE].arg.s, "r+b");
if (!args[ARGS_APPEND].is_set || local_arg->SCAN==NULL) { /* target does not exist*/
/*{{{ Create file*/
if (local_arg->SCAN!=NULL) fclose(local_arg->SCAN);
/*{{{ Calculate the span in x-y channel positions*/
xmin=ymin= FLT_MAX;
xmax=ymax= -FLT_MAX;
for (channel=0; channel<tinfo->nr_of_channels; channel++) {
const double this_x=tinfo->probepos[3*channel], this_y=tinfo->probepos[3*channel+1];
if (this_x>xmax) xmax=this_x;
if (this_x<xmin) xmin=this_x;
if (this_y>ymax) ymax=this_y;
if (this_y<ymin) ymin=this_y;
}
if (xmax==xmin) {
xmax+=0.5;
xmin-=0.5;
}
if (ymax==ymin) {
ymax+=0.5;
ymin-=0.5;
}
/*}}} */
if ((local_arg->SCAN=fopen(args[ARGS_OFILE].arg.s, "wb"))==NULL) {
ERREXIT1(tinfo->emethods, "write_synamps_init: Can't open %s\n", MSGPARM(args[ARGS_OFILE].arg.s));
}
/*{{{ Many settings, taken from example files...*/
strcpy(local_arg->EEG.rev, "Version 3.0");
local_arg->EEG.AdditionalFiles=local_arg->EEG.NextFile=local_arg->EEG.PrevFile=0;
switch (local_arg->output_format) {
case FORMAT_EEGFILE:
local_arg->EEG.review = 1;
local_arg->EEG.savemode=NSM_EEGF;
local_arg->EEG.type = NTY_EPOCHED;
local_arg->EEG.ContinousType=0;
local_arg->EEG.nsweeps=local_arg->EEG.compsweeps=local_arg->EEG.acceptcnt=0;
break;
case FORMAT_CNTFILE:
local_arg->EEG.review = 1;
local_arg->EEG.savemode=NSM_CONT;
local_arg->EEG.type = 0;
local_arg->EEG.ContinousType=NST_SYNAMPS-NST_CONT0;
local_arg->EEG.nsweeps=1;
local_arg->EEG.compsweeps=local_arg->EEG.acceptcnt=0;
break;
case FORMAT_AVGFILE:
local_arg->EEG.review = 0;
local_arg->EEG.savemode=NSM_AVGD;
local_arg->EEG.type = NTY_AVERAGED;
local_arg->EEG.ContinousType=0;
local_arg->EEG.nsweeps=local_arg->EEG.compsweeps=local_arg->EEG.acceptcnt=(tinfo->nrofaverages>0 ? tinfo->nrofaverages : 1);
break;
}
/* Since the comment can be of arbitrary length and thus also larger than the
* rest of the header, we should limit ourselves to the size of the id field */
strncpy(local_arg->EEG.id, tinfo->comment, sizeof(local_arg->EEG.id));
/* The date is coded in the comment, and read_synamps appends the date and time
* from the corresponding fields and the contents of the id field, so that
* the comment2time reader could be confused by the two date/time fields if we
* would not somehow invalidate remnants of the date field here... */
{char *slash;
while ((slash=strchr(local_arg->EEG.id, '/'))!=NULL) {
*slash='|';
}
}
strcpy(local_arg->EEG.oper, "Unspecified");
strcpy(local_arg->EEG.doctor, "Unspecified");
strcpy(local_arg->EEG.referral, "Unspecified");
strcpy(local_arg->EEG.hospital, "Unspecified");
strcpy(local_arg->EEG.patient, "Unspecified");
local_arg->EEG.age = 0;
local_arg->EEG.sex = 'U';
local_arg->EEG.hand = 'U';
strcpy(local_arg->EEG.med, "Unspecified");
strcpy(local_arg->EEG.category, "Unspecified");
strcpy(local_arg->EEG.state, "Unspecified");
strcpy(local_arg->EEG.label, "Unspecified");
{short dd, mm, yy, yyyy, hh, mi, ss;
if (comment2time(tinfo->comment, &dd, &mm, &yy, &yyyy, &hh, &mi, &ss)) {
char buffer[16]; /* Must be long enough to fit date (10) and time (12) +1 */
/* This is necessary because the date field was devised for 2-digit years.
* With 4-digit years it uses all 10 bytes and the trailing zero
* does not fit in any more. */
snprintf(buffer, 16, "%02d/%02d/%04d", mm, dd, yyyy);
strncpy(local_arg->EEG.date, buffer, sizeof(local_arg->EEG.date));
snprintf(buffer, 16, "%02d:%02d:%02d", hh, mi, ss);
strncpy(local_arg->EEG.time, buffer, sizeof(local_arg->EEG.time));
}
}
local_arg->EEG.rejectcnt = 0;
local_arg->EEG.pnts=(tinfo->data_type==FREQ_DATA ? tinfo->nroffreq : tinfo->nr_of_points);
local_arg->EEG.nchannels=NoOfChannels;
local_arg->EEG.avgupdate=1;
local_arg->EEG.domain=(tinfo->data_type==FREQ_DATA ? 1 : 0);
local_arg->EEG.variance=0;
local_arg->EEG.rate=(uint16_t)rint(tinfo->sfreq);
if (tinfo->data_type==FREQ_DATA) {
/* I know that this field is supposed to contain the taper window size in %,
but we need some way to store basefreq and 'rate' is only integer... */
local_arg->EEG.SpectWinLength=tinfo->basefreq;
}
if (local_arg->EEG.rate==0) {
local_arg->EEG.rate=1;
TRACEMS(tinfo->emethods, 0, "write_synamps_init: Rate was zero, corrected to 1!\n");
}
local_arg->EEG.scale=3.4375; /* This is a common sensitivity factor, used if sensitivities for channels are zero */
local_arg->EEG.veogcorrect=0;
local_arg->EEG.heogcorrect=0;
local_arg->EEG.aux1correct=0;
local_arg->EEG.aux2correct=0;
local_arg->EEG.veogtrig=15; /* Trigger threshold in percent of the maximum */
local_arg->EEG.heogtrig=10;
local_arg->EEG.aux1trig=10;
local_arg->EEG.aux2trig=10;
local_arg->EEG.veogchnl=find_channel_number(tinfo, "VEOG");
local_arg->EEG.heogchnl=find_channel_number(tinfo, "HEOG");
local_arg->EEG.veogdir=0; /* 0=positive, 1=negative */
local_arg->EEG.veog_n=10; /* "Number of points per waveform", really: minimum acceptable # averages */
local_arg->EEG.heog_n=10;
local_arg->EEG.veogmaxcnt=(int16_t)rint(0.3*tinfo->sfreq); /* "Number of observations per point", really: event window size in points */
local_arg->EEG.heogmaxcnt=(int16_t)rint(0.5*tinfo->sfreq);
local_arg->EEG.AmpSensitivity=10; /* External Amplifier gain */
local_arg->EEG.baseline=0;
local_arg->EEG.reject=0;
local_arg->EEG.trigtype=2; /* 2=Port */
local_arg->EEG.trigval=255; /* Hold */
local_arg->EEG.dir=0; /* Invert (negative up)=0 */
local_arg->EEG.dispmin= -1; /* displayed y range */
local_arg->EEG.dispmax= +1;
local_arg->EEG.DisplayXmin=local_arg->EEG.AutoMin=local_arg->EEG.rejstart=local_arg->EEG.offstart=local_arg->EEG.xmin= -tinfo->beforetrig/tinfo->sfreq;
local_arg->EEG.DisplayXmax=local_arg->EEG.AutoMax=local_arg->EEG.rejstop=local_arg->EEG.offstop=local_arg->EEG.xmax= tinfo->aftertrig/tinfo->sfreq;
local_arg->EEG.zmin=0.0;
local_arg->EEG.zmax=0.1;
strcpy(local_arg->EEG.ref, "A1-A2");
strcpy(local_arg->EEG.screen, "--------");
local_arg->EEG.CalMode=2;
local_arg->EEG.CalMethod=0;
local_arg->EEG.CalUpdate=1;
local_arg->EEG.CalBaseline=0;
local_arg->EEG.CalSweeps=5;
local_arg->EEG.CalAttenuator=1;
local_arg->EEG.CalPulseVolt=1;
local_arg->EEG.CalPulseStart=0;
local_arg->EEG.CalPulseStop=0;
local_arg->EEG.CalFreq=10;
strcpy(local_arg->EEG.taskfile, "--------");
strcpy(local_arg->EEG.seqfile, "--------"); /* Otherwise tries to read a seqfile */
local_arg->EEG.HeadGain=150;
local_arg->EEG.FspFValue=2.5;
local_arg->EEG.FspBlockSize=200;
local_arg->EEG.fratio=1.0;
local_arg->EEG.minor_rev=12; /* Necessary ! Otherwise a different file structure is assumed... */
local_arg->EEG.eegupdate=1;
local_arg->EEG.xscale=local_arg->EEG.yscale=0;
local_arg->EEG.xsize=40;
local_arg->EEG.ysize=20;
local_arg->EEG.ACmode=0;
local_arg->EEG.XScaleValue=XSCALEVALUE;
local_arg->EEG.XScaleInterval=XSCALEINTERVAL;
local_arg->EEG.YScaleValue=YSCALEVALUE;
local_arg->EEG.YScaleInterval=YSCALEINTERVAL;
local_arg->EEG.ScaleToolX1=20;
local_arg->EEG.ScaleToolY1=170;
local_arg->EEG.ScaleToolX2=23.1535;
local_arg->EEG.ScaleToolY2=153.87;
local_arg->EEG.port=715;
local_arg->EEG.NumSamples=0;
local_arg->EEG.FilterFlag=0;
local_arg->EEG.LowCutoff=4;
local_arg->EEG.LowPoles=2;
local_arg->EEG.HighCutoff=50;
local_arg->EEG.HighPoles=2;
local_arg->EEG.FilterType=3;
local_arg->EEG.FilterDomain=1;
local_arg->EEG.SnrFlag=0;
local_arg->EEG.CoherenceFlag=0;
local_arg->EEG.ContinousSeconds=4;
local_arg->EEG.ChannelOffset=sizeof(int16_t);
local_arg->EEG.AutoCorrectFlag=0;
local_arg->EEG.DCThreshold='F';
/*}}} */
/*{{{ Write SETUP structure*/
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&local_arg->EEG, sm_SETUP);
# endif
write_struct((char *)&local_arg->EEG, sm_SETUP, local_arg->SCAN);
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&local_arg->EEG, sm_SETUP);
# endif
/*}}} */
if ((local_arg->Channels=(ELECTLOC *)calloc(NoOfChannels,sizeof(ELECTLOC)))==NULL) {
ERREXIT(tinfo->emethods, "write_synamps_init: Error allocating Channels list\n");
}
for (channel=0; channel<NoOfChannels; channel++) {
/*{{{ Settings in the channel structure*/
strncpy(local_arg->Channels[channel].lab, tinfo->channelnames[channel],sizeof(local_arg->Channels[channel].lab));
local_arg->Channels[channel].reference=0;
local_arg->Channels[channel].skip=0;
local_arg->Channels[channel].reject=0;
local_arg->Channels[channel].display=1;
local_arg->Channels[channel].bad=0;
local_arg->Channels[channel].n=(local_arg->output_format==FORMAT_AVGFILE ? local_arg->EEG.acceptcnt : (local_arg->output_format==FORMAT_CNTFILE ? 0 : 1));
local_arg->Channels[channel].avg_reference=0;
local_arg->Channels[channel].ClipAdd=0;
local_arg->Channels[channel].x_coord= (tinfo->probepos[3*channel ]-xmin)/(xmax-xmin)*RANGE_TO_COVER+XOFFSET;
local_arg->Channels[channel].y_coord=((ymax-tinfo->probepos[3*channel+1])/(ymax-ymin)*RANGE_TO_COVER+YOFFSET)/3;
local_arg->Channels[channel].veog_wt=0;
local_arg->Channels[channel].veog_std=0;
local_arg->Channels[channel].heog_wt=0;
local_arg->Channels[channel].heog_std=0;
local_arg->Channels[channel].baseline=0;
local_arg->Channels[channel].Filtered=0;
local_arg->Channels[channel].sensitivity=204.8/args[ARGS_CONVFACTOR].arg.d; /* This arranges for conv_factor to act as the expected product before integer truncation */
local_arg->Channels[channel].Gain=5;
local_arg->Channels[channel].HiPass=0; /* 0=DC */
local_arg->Channels[channel].LoPass=4;
local_arg->Channels[channel].Page=0;
local_arg->Channels[channel].Size=0;
local_arg->Channels[channel].Impedance=0;
local_arg->Channels[channel].PhysicalChnl=channel; /* Channel mapping */
local_arg->Channels[channel].Rectify=0;
local_arg->Channels[channel].calib=1.0;
/*}}} */
/*{{{ Write ELECTLOC struct*/
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&local_arg->Channels[channel], sm_ELECTLOC);
# endif
write_struct((char *)&local_arg->Channels[channel], sm_ELECTLOC, local_arg->SCAN);
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&local_arg->Channels[channel], sm_ELECTLOC);
# endif
/*}}} */
}
local_arg->SizeofHeader = ftell(local_arg->SCAN);
TRACEMS2(tinfo->emethods, 1, "write_synamps_init: Creating file %s, format `%s'\n", MSGPARM(args[ARGS_OFILE].arg.s), MSGPARM(neuroscan_subtype_names[NEUROSCAN_SUBTYPE(&local_arg->EEG)]));
/*}}} */
} else {
/*{{{ Append to file*/
enum NEUROSCAN_SUBTYPES SubType;
if (read_struct((char *)&local_arg->EEG, sm_SETUP, local_arg->SCAN)==0) {
ERREXIT(tinfo->emethods, "write_synamps_init: Can't read file header.\n");
}
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&local_arg->EEG, sm_SETUP);
# endif
NoOfChannels = local_arg->EEG.nchannels;
/*{{{ Allocate channel header*/
if ((local_arg->Channels=(ELECTLOC *)malloc(NoOfChannels*sizeof(ELECTLOC)))==NULL) {
ERREXIT(tinfo->emethods, "write_synamps_init: Error allocating Channels list\n");
}
/*}}} */
for (channel=0; channel<NoOfChannels; channel++) {
if (read_struct((char *)&local_arg->Channels[channel], sm_ELECTLOC, local_arg->SCAN)==0) {
ERREXIT(tinfo->emethods, "write_synamps_init: Can't read channel headers.\n");
}
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&local_arg->Channels[channel], sm_ELECTLOC);
# endif
}
local_arg->SizeofHeader = ftell(local_arg->SCAN);
SubType=NEUROSCAN_SUBTYPE(&local_arg->EEG);
switch (SubType) {
case NST_EPOCHS:
if (local_arg->output_format!=FORMAT_EEGFILE) {
TRACEMS(tinfo->emethods, 0, "write_synamps_init: Appending to epoch file, discarding option -c\n");
local_arg->output_format=FORMAT_EEGFILE;
}
fseek(local_arg->SCAN, 0, SEEK_END);
break;
case NST_CONTINUOUS:
case NST_SYNAMPS: {
TEEG TagType;
EVENT1 event;
if (local_arg->output_format!=FORMAT_CNTFILE) {
TRACEMS(tinfo->emethods, 0, "write_synamps_init: Appending to continuous file, assuming option -c\n");
local_arg->output_format=FORMAT_CNTFILE;
}
fseek(local_arg->SCAN, local_arg->EEG.EventTablePos, SEEK_SET);
/* Here we face two evils in one header: Coding enums as chars and
* allowing longs at odd addresses. Well... */
if (1==read_struct((char *)&TagType, sm_TEEG, local_arg->SCAN)) {
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&TagType, sm_TEEG);
# endif
if (TagType.Teeg==TEEG_EVENT_TAB1) {
/*{{{ Read the event table*/
int tag;
int const ntags=TagType.Size/sm_EVENT1[0].offset; /* sm_EVENT1[0].offset is sizeof(EVENT1) in the file. */
for (tag=0; tag<ntags; tag++) {
if (1!=read_struct((char *)&event, sm_EVENT1, local_arg->SCAN)) {
ERREXIT(tinfo->emethods, "write_synamps_init: Can't read an event table entry.\n");
break;
}
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&event, sm_EVENT1);
# endif
{
int const TrigVal=event.StimType &0xff;
int const KeyBoard=event.KeyBoard&0xf;
int const KeyPad=Event_KeyPad_value(event);
int const Accept=Event_Accept_value(event);
int code=TrigVal-KeyPad+neuroscan_accept_translation[Accept];
if (code==0) {
code= -((KeyBoard+1)<<4);
}
push_trigger(&local_arg->triggers,offset2point(tinfo, event.Offset),code,NULL);
}
}
/*}}} */
} else {
ERREXIT(tinfo->emethods, "write_synamps_init: Type 2 events are not yet supported.\n");
}
} else {
ERREXIT(tinfo->emethods, "write_synamps_init: Can't read the event table header.\n");
}
fseek(local_arg->SCAN, local_arg->EEG.EventTablePos, SEEK_SET);
}
break;
default:
ERREXIT1(tinfo->emethods, "write_synamps: Cannot append to file type `%s'\n", MSGPARM(neuroscan_subtype_names[SubType]));
break;
}
/* Conformance to the incoming epochs is checked in write_synamps */
TRACEMS1(tinfo->emethods, 1, "write_synamps_init: Appending to file %s\n", MSGPARM(args[ARGS_OFILE].arg.s));
/*}}} */
}
tinfo->methods->init_done=TRUE;
}
/* This function has all the knowledge about events in the various file types */
LOCAL void
read_synamps_build_trigbuffer(transform_info_ptr tinfo) {
struct read_synamps_storage * const local_arg=(struct read_synamps_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
if (local_arg->triggers.buffer_start==NULL) {
growing_buf_allocate(&local_arg->triggers, 0);
} else {
growing_buf_clear(&local_arg->triggers);
}
if (args[ARGS_TRIGFILE].is_set) {
FILE * const triggerfile=(strcmp(args[ARGS_TRIGFILE].arg.s,"stdin")==0 ? stdin : fopen(args[ARGS_TRIGFILE].arg.s, "r"));
TRACEMS(tinfo->emethods, 1, "read_synamps_build_trigbuffer: Reading event file\n");
if (triggerfile==NULL) {
ERREXIT1(tinfo->emethods, "read_synamps_build_trigbuffer: Can't open trigger file >%s<\n", MSGPARM(args[ARGS_TRIGFILE].arg.s));
}
while (TRUE) {
long trigpoint;
char *description;
int const code=read_trigger_from_trigfile(triggerfile, tinfo->sfreq, &trigpoint, &description);
if (code==0) break;
push_trigger(&local_arg->triggers, trigpoint, code, description);
free_pointer((void **)&description);
}
if (triggerfile!=stdin) fclose(triggerfile);
} else {
switch(local_arg->SubType) {
case NST_CONTINUOUS:
case NST_SYNAMPS: {
/*{{{ Read the events header and array*/
/* We handle errors through setting errormessage, because we want to continue
* with a warning if we are in continuous mode or read from an event file */
TEEG TagType;
EVENT2 event;
TRACEMS(tinfo->emethods, 1, "read_synamps_build_trigbuffer: Reading event table\n");
fseek(local_arg->SCAN,local_arg->EEG.EventTablePos,SEEK_SET);
/* Here we face two evils in one header: Coding enums as chars and
* allowing longs at odd addresses. Well... */
if (read_struct((char *)&TagType, sm_TEEG, local_arg->SCAN)==1) {
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&TagType, sm_TEEG);
# endif
if (TagType.Teeg==TEEG_EVENT_TAB1 || TagType.Teeg==TEEG_EVENT_TAB2) {
/*{{{ Read the event table*/
struct_member * const sm_EVENT=(TagType.Teeg==TEEG_EVENT_TAB1 ? sm_EVENT1 : sm_EVENT2);
int ntags, tag;
ntags=TagType.Size/sm_EVENT[0].offset; /* sm_EVENT[0].offset is the size of the structure in file. */
for (tag=0; tag<ntags; tag++) {
long trigger_position=0;
int TrigVal=0, KeyPad=0, KeyBoard=0;
enum NEUROSCAN_ACCEPTVALUES Accept=(enum NEUROSCAN_ACCEPTVALUES)0;
if (read_struct((char *)&event, sm_EVENT, local_arg->SCAN)==0) {
ERREXIT(tinfo->emethods, "read_synamps_build_trigbuffer: Can't read an event table entry.\n");
break;
}
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&event, sm_EVENT);
# endif
trigger_position=offset2point(tinfo,event.Offset);
TrigVal=event.StimType &0xff;
KeyBoard=event.KeyBoard&0xf;
KeyPad=Event_KeyPad_value(event);
Accept=Event_Accept_value(event);
if (!args[ARGS_NOREJECTED].is_set || Accept!=NAV_REJECT) {
read_synamps_push_keys(tinfo, trigger_position, TrigVal, KeyPad, KeyBoard, Accept);
}
}
/*}}} */
} else {
ERREXIT1(tinfo->emethods, "read_synamps_build_trigbuffer: Unknown tag type %d.\n", MSGPARM(TagType.Teeg));
}
} else {
ERREXIT(tinfo->emethods, "read_synamps_build_trigbuffer: Can't read the event table header.\n");
}
/*}}} */
}
break;
case NST_CONT0: {
/*{{{ CONT0: Two trailing marker channels*/
long current_triggerpoint=0;
unsigned short *pdata;
TRACEMS(tinfo->emethods, 1, "read_synamps_build_trigbuffer: Analyzing CONT0 marker channels\n");
while (current_triggerpoint<local_arg->EEG.NumSamples) {
int TrigVal=0, KeyPad=0, KeyBoard=0;
enum NEUROSCAN_ACCEPTVALUES Accept=(enum NEUROSCAN_ACCEPTVALUES)0;
read_synamps_seek_point(tinfo, current_triggerpoint);
pdata=(unsigned short *)local_arg->buffer+current_triggerpoint-local_arg->first_point_in_buffer+local_arg->nchannels;
TrigVal =pdata[0]&0xff;
KeyBoard=pdata[1]&0xf; if (KeyBoard>13) KeyBoard=0;
if (TrigVal!=0 || KeyBoard!=0) {
read_synamps_push_keys(tinfo, current_triggerpoint, TrigVal, KeyPad, KeyBoard, Accept);
current_triggerpoint++;
while (current_triggerpoint<local_arg->EEG.NumSamples) {
int This_TrigVal, This_KeyBoard;
read_synamps_seek_point(tinfo, current_triggerpoint);
pdata=(unsigned short *)local_arg->buffer+current_triggerpoint-local_arg->first_point_in_buffer+local_arg->nchannels;
This_TrigVal =pdata[0]&0xff;
This_KeyBoard=pdata[1]&0xf; if (This_KeyBoard>13) This_KeyBoard=0;
if (This_TrigVal!=TrigVal || This_KeyBoard!=KeyBoard) break;
current_triggerpoint++;
}
}
}
/*}}} */
}
break;
case NST_DCMES: {
/*{{{ DC-MES: Single, leading marker channel*/
long current_triggerpoint=0;
unsigned short *pdata;
TRACEMS(tinfo->emethods, 1, "read_synamps_build_trigbuffer: Analyzing DCMES marker channel\n");
while (current_triggerpoint<local_arg->EEG.NumSamples) {
int TrigVal=0, KeyPad=0, KeyBoard=0;
enum NEUROSCAN_ACCEPTVALUES Accept=(enum NEUROSCAN_ACCEPTVALUES)0;
read_synamps_seek_point(tinfo, current_triggerpoint);
pdata=(unsigned short *)local_arg->buffer+current_triggerpoint-local_arg->first_point_in_buffer;
TrigVal= *pdata&0xff;
KeyBoard=(*pdata>>8)&0xf; if (KeyBoard>13) KeyBoard=0;
if (TrigVal!=0 || KeyBoard!=0) {
read_synamps_push_keys(tinfo, current_triggerpoint, TrigVal, KeyPad, KeyBoard, Accept);
current_triggerpoint++;
while (current_triggerpoint<local_arg->EEG.NumSamples) {
int This_TrigVal, This_KeyBoard;
read_synamps_seek_point(tinfo, current_triggerpoint);
pdata=(unsigned short *)local_arg->buffer+current_triggerpoint-local_arg->first_point_in_buffer;
This_TrigVal= *pdata&0xff;
This_KeyBoard=(*pdata>>8)&0xf; if (This_KeyBoard>13) This_KeyBoard=0;
if (This_TrigVal!=TrigVal || This_KeyBoard!=KeyBoard) break;
current_triggerpoint++;
}
}
}
/*}}} */
}
break;
default:
break;
}
}
/*{{{ get_mfxepoch(transform_info_ptr tinfo)*/
METHODDEF DATATYPE *
get_mfxepoch(transform_info_ptr tinfo) {
struct get_mfxepoch_storage *local_arg=(struct get_mfxepoch_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
DATATYPE *newepoch;
int again=FALSE;
long epochlength;
if (local_arg->epochs--==0) return NULL;
do {
again=FALSE;
if ((newepoch=(DATATYPE *)mfx_getepoch(local_arg->fileptr, &epochlength, local_arg->beforetrig-local_arg->offset, local_arg->aftertrig+local_arg->offset, local_arg->trigname, args[ARGS_TRIGCODE].arg.i))==NULL) {
/* MFX_READERR4 is the normal end-of-file 'error' */
TRACEMS1(tinfo->emethods, (mfx_lasterr==MFX_READERR4 ? 1 : 0), "get_mfxepoch: mfx error >%s<\n", MSGPARM(mfx_errors[mfx_lasterr]));
/* If the error was due to the beforetrig time being too long, try to
* skip this epoch and try the next one */
if (mfx_lasterr==MFX_NEGSEEK) {
again=TRUE;
mfx_seektrigger(local_arg->fileptr, local_arg->trigname, args[ARGS_TRIGCODE].arg.i);
TRACEMS(tinfo->emethods, 1, "get_mfxepoch: Retrying...\n");
}
}
} while (again);
if (newepoch!=NULL) {
/* TOUCH TINFO ONLY IF GETEPOCH WAS SUCCESSFUL */
get_mfxinfo(local_arg->fileptr, tinfo);
tinfo->z_label=NULL;
tinfo->nr_of_points=epochlength;
tinfo->length_of_output_region=epochlength*tinfo->nr_of_channels;
tinfo->beforetrig=local_arg->beforetrig;
tinfo->aftertrig=tinfo->nr_of_points-tinfo->beforetrig;
tinfo->multiplexed=TRUE;
tinfo->sfreq=1.0/(local_arg->fileptr)->fileheader.sample_period;
tinfo->data_type=TIME_DATA;
tinfo->itemsize=1; /* Still, mfx doesn't support tuple data */
tinfo->leaveright=0;
tinfo->nrofaverages=1;
}
return newepoch;
}
/*{{{ read_freiburg_init(transform_info_ptr tinfo) {*/
METHODDEF void
read_freiburg_init(transform_info_ptr tinfo) {
struct read_freiburg_storage *local_arg=(struct read_freiburg_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
struct stat statbuf;
/*{{{ Process options*/
local_arg->fromepoch=(args[ARGS_FROMEPOCH].is_set ? args[ARGS_FROMEPOCH].arg.i : 1);
local_arg->epochs=(args[ARGS_EPOCHS].is_set ? args[ARGS_EPOCHS].arg.i : -1);
/*}}} */
local_arg->channelnames=NULL;
local_arg->uV_per_bit=NULL;
growing_buf_init(&local_arg->segment_table); /* This sets buffer_start=NULL */
local_arg->nr_of_channels=0;
if (args[ARGS_CONTINUOUS].is_set) {
/*{{{ Open a continuous (sleep, Bernd Tritschler) file*/
FILE *infile;
local_arg->in_channels= &sleep_channels[0];
if (stat(args[ARGS_IFILE].arg.s, &statbuf)!= 0 || !S_ISREG(statbuf.st_mode)) {
/* File does not exist or isn't a regular file: Try BT format */
#ifdef __GNUC__
char co_name[strlen(args[ARGS_IFILE].arg.s)+4];
char coa_name[strlen(args[ARGS_IFILE].arg.s)+5];
#else
char co_name[MAX_PATHLEN];
char coa_name[MAX_PATHLEN];
#endif
char coa_buf[MAX_COALINE];
FILE *coafile;
strcpy(co_name, args[ARGS_IFILE].arg.s); strcat(co_name, ".co");
if((infile=fopen(co_name,"rb"))==NULL) {
ERREXIT1(tinfo->emethods, "read_freiburg_init: Can't open file %s\n", MSGPARM(co_name));
}
local_arg->infile=infile;
if (args[ARGS_REPAIR_OFFSET].is_set) {
fseek(infile, args[ARGS_REPAIR_OFFSET].arg.i, SEEK_SET);
} else {
if (read_struct((char *)&local_arg->btfile, sm_BT_file, infile)==0) {
ERREXIT1(tinfo->emethods, "read_freiburg_init: Header read error in file %s\n", MSGPARM(co_name));
}
# ifndef LITTLE_ENDIAN
change_byteorder((char *)&local_arg->btfile, sm_BT_file);
# endif
}
strcpy(coa_name, args[ARGS_IFILE].arg.s); strcat(coa_name, ".coa");
if((coafile=fopen(coa_name,"rb"))==NULL) {
TRACEMS1(tinfo->emethods, 0, "read_freiburg_init: No file %s found\n", MSGPARM(coa_name));
} else {
while (!feof(coafile)) {
Bool repeat;
fgets(coa_buf, MAX_COALINE-1, coafile);
do {
repeat=FALSE;
if (strncmp(coa_buf, "Channel_Table ", 14)==0) {
int havechannels=0, stringlength=0;
long tablepos=ftell(coafile);
char *innames;
while (!feof(coafile)) {
char *eol;
fgets(coa_buf, MAX_COALINE-1, coafile);
if (!isdigit(*coa_buf)) break;
if (strncmp(coa_buf, "0 0 ", 4)==0) {
/* Empty channel descriptors: Don't generate channelnames */
} else {
for (eol=coa_buf+strlen(coa_buf)-1; eol>=coa_buf && (*eol=='\n' || *eol=='\r'); eol--) *eol='\0';
/* This includes 1 for the zero at the end: */
stringlength+=strlen(strrchr(coa_buf, ' '));
}
havechannels++;
}
if (havechannels==0) continue; /* Channel table is unuseable */
local_arg->nr_of_channels=havechannels;
innames=NULL;
if ((stringlength!=0 &&
((local_arg->channelnames=(char **)malloc(havechannels*sizeof(char *)))==NULL ||
(innames=(char *)malloc(stringlength))==NULL)) ||
(local_arg->uV_per_bit=(float *)malloc(havechannels*sizeof(float)))==NULL) {
ERREXIT(tinfo->emethods, "read_freiburg_init: Error allocating .coa memory\n");
}
fseek(coafile, tablepos, SEEK_SET);
havechannels=0;
while (!feof(coafile)) {
char *eol;
fgets(coa_buf, MAX_COALINE-1, coafile);
if (!isdigit(*coa_buf)) break;
for (eol=coa_buf+strlen(coa_buf)-1; eol>=coa_buf && (*eol=='\n' || *eol=='\r'); eol--) *eol='\0';
if (innames!=NULL) {
strcpy(innames, strrchr(coa_buf, ' ')+1);
local_arg->channelnames[havechannels]=innames;
innames+=strlen(innames)+1;
}
/* The sensitivity in .coa files is given as nV/Bit */
local_arg->uV_per_bit[havechannels]=atoi(strchr(coa_buf, ' ')+1)/1000.0;
if (local_arg->uV_per_bit[havechannels]==0.0) {
local_arg->uV_per_bit[havechannels]=0.086;
TRACEMS1(tinfo->emethods, 1, "read_freiburg_init: Sensitivity for channel %d set to 86 nV/Bit\n", MSGPARM(havechannels));
}
havechannels++;
}
repeat=TRUE;
} else if (strncmp(coa_buf, SEGMENT_TABLE_STRING, strlen(SEGMENT_TABLE_STRING))==0) {
long current_offset=0;
char *inbuf=coa_buf;
Bool havesomething=FALSE;
growing_buf_allocate(&local_arg->segment_table, 0);
while (!feof(coafile)) {
int const nextchar=fgetc(coafile);
if (nextchar=='\r' || nextchar=='\n' || nextchar==' ') {
if (havesomething) {
*inbuf = '\0';
current_offset+=atoi(coa_buf);
growing_buf_append(&local_arg->segment_table, (char *)¤t_offset, sizeof(long));
inbuf=coa_buf;
havesomething=FALSE;
}
if (nextchar=='\n') break;
} else {
*inbuf++ = nextchar;
havesomething=TRUE;
}
}
repeat=FALSE;
}
} while (repeat);
}
fclose(coafile);
if (local_arg->uV_per_bit==NULL) {
TRACEMS1(tinfo->emethods, 0, "read_freiburg_init: No channel table found in file %s\n", MSGPARM(coa_name));
}
if (local_arg->segment_table.buffer_start==NULL) {
TRACEMS1(tinfo->emethods, 0, "read_freiburg_init: No segment table found in file %s\n", MSGPARM(coa_name));
}
/* Determine the exact number of points in file: Start with the previous
* segment and add the last segment. */
fstat(fileno(infile),&statbuf);
//printf("File size is %ld\n", statbuf.st_size);
//printf("Last segment (EOF) at %ld\n", ((long *)local_arg->segment_table.buffer_start)[local_arg->segment_table.current_length/sizeof(long)-1]);
while (local_arg->segment_table.current_length>=1 && ((long *)local_arg->segment_table.buffer_start)[local_arg->segment_table.current_length/sizeof(long)-1]>=statbuf.st_size) {
//printf("%ld - Removing last segment!\n", ((long *)local_arg->segment_table.buffer_start)[local_arg->segment_table.current_length/sizeof(long)-1]);
local_arg->segment_table.current_length--;
}
/* Size without the last segment */
tinfo->points_in_file=(local_arg->segment_table.current_length/sizeof(long)-1)*SEGMENT_LENGTH;
/* Count the points in the last segment */
{
array myarray;
int length_of_last_segment=0;
myarray.element_skip=tinfo->itemsize=1;
myarray.nr_of_vectors=1;
myarray.nr_of_elements=local_arg->nr_of_channels;
if (array_allocate(&myarray)==NULL) {
ERREXIT(tinfo->emethods, "read_freiburg_init: Error allocating myarray\n");
}
fseek(infile, ((long *)local_arg->segment_table.buffer_start)[local_arg->segment_table.current_length/sizeof(long)-1], SEEK_SET);
//printf("Seeking to %ld\n", ((long *)local_arg->segment_table.buffer_start)[local_arg->segment_table.current_length/sizeof(long)-1]);
tinfo->nr_of_channels=local_arg->nr_of_channels; /* This is used by freiburg_get_segment_init! */
freiburg_get_segment_init(tinfo);
while (freiburg_get_segment(tinfo, &myarray)==0) length_of_last_segment++;
freiburg_get_segment_free(tinfo);
tinfo->points_in_file+=length_of_last_segment;
TRACEMS1(tinfo->emethods, 1, "read_freiburg_init: Last segment has %ld points\n",length_of_last_segment);
array_free(&myarray);
}
}
if (local_arg->channelnames==NULL && local_arg->btfile.text[0]=='\0') {
local_arg->in_channels= &goeppi_channels[0];
TRACEMS(tinfo->emethods, 0, "read_freiburg_init: Assuming Goeppingen style setup!\n");
}
local_arg->continuous_type=SLEEP_BT_TYPE;
TRACEMS(tinfo->emethods, 1, "read_freiburg_init: Opened file in BT format\n");
} else {
if((infile=fopen(args[ARGS_IFILE].arg.s,"rb"))==NULL) {
ERREXIT1(tinfo->emethods, "read_freiburg_init: Can't open file %s\n", MSGPARM(args[ARGS_IFILE].arg.s));
}
if (args[ARGS_REPAIR_OFFSET].is_set) {
fseek(infile, args[ARGS_REPAIR_OFFSET].arg.i, SEEK_SET);
} else {
if (read_struct((char *)&local_arg->btfile, sm_BT_file, infile)==0) {
ERREXIT1(tinfo->emethods, "read_freiburg_init: Header read error in file %s\n", MSGPARM(args[ARGS_IFILE].arg.s));
}
# ifdef LITTLE_ENDIAN
change_byteorder((char *)&local_arg->btfile, sm_BT_file);
# endif
}
local_arg->continuous_type=SLEEP_KL_TYPE;
/* Year and day are swapped in KL format with respect to BT format... */
{short buf=local_arg->btfile.start_year; local_arg->btfile.start_year=local_arg->btfile.start_day; local_arg->btfile.start_day=buf;}
/* Well, sometimes or most of the time, in KL files the sampling interval
* was not set correctly... */
if (!args[ARGS_SFREQ].is_set && local_arg->btfile.sampling_interval_us!=9765 && local_arg->btfile.sampling_interval_us!=9766) {
TRACEMS1(tinfo->emethods, 0, "read_freiburg_init: sampling_interval_us was %d, corrected!\n", MSGPARM(local_arg->btfile.sampling_interval_us));
local_arg->btfile.sampling_interval_us=9766;
}
TRACEMS(tinfo->emethods, 1, "read_freiburg_init: Opened file in KL format\n");
}
if (args[ARGS_REPAIR_CHANNELS].is_set) local_arg->btfile.nr_of_channels=args[ARGS_REPAIR_CHANNELS].arg.i;
tinfo->nr_of_channels=local_arg->btfile.nr_of_channels;
if (tinfo->nr_of_channels<=0 || tinfo->nr_of_channels>MAX_NUMBER_OF_CHANNELS_IN_EP) {
ERREXIT1(tinfo->emethods, "read_freiburg_init: Impossible: %d channels?\n", MSGPARM(tinfo->nr_of_channels));
}
if (local_arg->nr_of_channels==0) {
local_arg->nr_of_channels=tinfo->nr_of_channels;
} else {
if (local_arg->nr_of_channels!=tinfo->nr_of_channels) {
ERREXIT2(tinfo->emethods, "read_freiburg_init: Setup has %d channels, but the file has %d!\n", MSGPARM(local_arg->nr_of_channels), MSGPARM(tinfo->nr_of_channels));
}
}
local_arg->sfreq=(args[ARGS_SFREQ].is_set ? args[ARGS_SFREQ].arg.d : 1.0e6/local_arg->btfile.sampling_interval_us);
tinfo->sfreq=local_arg->sfreq;
if (tinfo->sfreq<=0.0 || tinfo->sfreq>MAX_POSSIBLE_SFREQ) {
ERREXIT1(tinfo->emethods, "read_freiburg_init: Impossible: sfreq=%gHz?\n", MSGPARM(tinfo->sfreq));
}
/*{{{ Parse arguments that can be in seconds*/
tinfo->nr_of_points=gettimeslice(tinfo, args[ARGS_NCHANNELS].arg.s);
if (tinfo->nr_of_points<=0) {
/* Read the whole file as one epoch */
TRACEMS1(tinfo->emethods, 1, "read_freiburg_init: Reading %ld points\n",tinfo->points_in_file);
tinfo->nr_of_points=tinfo->points_in_file;
}
local_arg->offset=(args[ARGS_OFFSET].is_set ? gettimeslice(tinfo, args[ARGS_OFFSET].arg.s) : 0);
local_arg->epochlength=tinfo->nr_of_points;
/*}}} */
tinfo->beforetrig= -local_arg->offset;
tinfo->aftertrig=tinfo->nr_of_points+local_arg->offset;
/*}}} */
} else {
local_arg->in_channels= &freiburg_channels[0];
local_arg->current_trigger=0;
if (stat(args[ARGS_IFILE].arg.s, &statbuf)!=0) {
ERREXIT1(tinfo->emethods, "read_freiburg_init: Can't stat file %s\n", MSGPARM(args[ARGS_IFILE].arg.s));
}
local_arg->nr_of_channels=atoi(args[ARGS_NCHANNELS].arg.s);
/* average mode if the name does not belong to a directory */
local_arg->average_mode= !S_ISDIR(statbuf.st_mode);
tinfo->nr_of_channels=MAX_NUMBER_OF_CHANNELS_IN_EP;
}
freiburg_get_segment_init(tinfo);
local_arg->current_point=0;
tinfo->methods->init_done=TRUE;
}
/*{{{ trim(transform_info_ptr tinfo) {*/
METHODDEF DATATYPE *
trim(transform_info_ptr tinfo) {
struct trim_storage *local_arg=(struct trim_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
int item, shift, nrofshifts=1;
long nr_of_input_ranges,nr_of_ranges;
long output_points;
long rangeno, current_output_point=0;
const Bool collapse=args[ARGS_COLLAPSE].is_set || args[ARGS_COLLAPSE_Q].is_set;
const DATATYPE collapse_quantile=(args[ARGS_COLLAPSE].is_set&&args[ARGS_COLLAPSE].arg.i==COLLAPSE_BY_MEDIAN ? 0.5 : (args[ARGS_COLLAPSE_Q].is_set ? args[ARGS_COLLAPSE_Q].arg.d/100.0 : 0.0));
array myarray, newarray;
DATATYPE *oldtsdata;
DATATYPE *new_xdata=NULL;
growing_buf ranges, tokenbuf;
growing_buf triggers;
growing_buf_init(&ranges);
growing_buf_init(&tokenbuf);
growing_buf_init(&triggers);
if (tinfo->data_type==FREQ_DATA) {
tinfo->nr_of_points=tinfo->nroffreq;
nrofshifts=tinfo->nrofshifts;
}
/*{{{ Parse the ranges argument */
nr_of_input_ranges=growing_buf_count_tokens(&local_arg->rangearg);
if (nr_of_input_ranges<=0 || nr_of_input_ranges%2!=0) {
ERREXIT(tinfo->emethods, "trim: Need an even number of arguments >=2\n");
}
nr_of_input_ranges/=2;
output_points=0;
growing_buf_allocate(&ranges, 0);
growing_buf_allocate(&tokenbuf, 0);
growing_buf_get_firsttoken(&local_arg->rangearg,&tokenbuf);
while (tokenbuf.current_length>0) {
struct range thisrange;
if (args[ARGS_USE_CHANNEL].is_set) {
int const channel=find_channel_number(tinfo,args[ARGS_USE_CHANNEL].arg.s);
if (channel>=0) {
DATATYPE const minval=get_value(tokenbuf.buffer_start, NULL);
growing_buf_get_nexttoken(&local_arg->rangearg,&tokenbuf);
DATATYPE const maxval=get_value(tokenbuf.buffer_start, NULL);
array indata;
tinfo_array(tinfo, &indata);
indata.current_vector=channel;
thisrange.offset= -1; /* Marks no start recorded yet */
do {
DATATYPE const currval=indata.read_element(&indata);
if (currval>=minval && currval<=maxval) {
if (thisrange.offset== -1) {
thisrange.offset=indata.current_element;
thisrange.length= 1;
} else {
thisrange.length++;
}
} else {
if (thisrange.offset!= -1) {
growing_buf_append(&ranges, (char *)&thisrange, sizeof(struct range));
output_points+=(collapse ? 1 : thisrange.length);
thisrange.offset= -1;
}
}
array_advance(&indata);
} while (indata.message==ARRAY_CONTINUE);
if (thisrange.offset!= -1) {
growing_buf_append(&ranges, (char *)&thisrange, sizeof(struct range));
output_points+=(collapse ? 1 : thisrange.length);
}
} else {
ERREXIT1(tinfo->emethods, "set xdata_from_channel: Unknown channel name >%s<\n", MSGPARM(args[ARGS_USE_CHANNEL].arg.s));
}
} else {
if (args[ARGS_USE_XVALUES].is_set) {
if (tinfo->xdata==NULL) create_xaxis(tinfo, NULL);
thisrange.offset=decode_xpoint(tinfo, tokenbuf.buffer_start);
growing_buf_get_nexttoken(&local_arg->rangearg,&tokenbuf);
thisrange.length=decode_xpoint(tinfo, tokenbuf.buffer_start)-thisrange.offset+1;
} else {
thisrange.offset=gettimeslice(tinfo, tokenbuf.buffer_start);
growing_buf_get_nexttoken(&local_arg->rangearg,&tokenbuf);
thisrange.length=gettimeslice(tinfo, tokenbuf.buffer_start);
if (thisrange.length==0) {
thisrange.length=tinfo->nr_of_points-thisrange.offset;
}
}
if (thisrange.length<=0) {
ERREXIT1(tinfo->emethods, "trim: length is %d but must be >0.\n", MSGPARM(thisrange.length));
}
growing_buf_append(&ranges, (char *)&thisrange, sizeof(struct range));
output_points+=(collapse ? 1 : thisrange.length);
}
growing_buf_get_nexttoken(&local_arg->rangearg,&tokenbuf);
}
/*}}} */
nr_of_ranges=ranges.current_length/sizeof(struct range);
if (nr_of_ranges==0) {
TRACEMS(tinfo->emethods, 0, "trim: No valid ranges selected, rejecting epoch.\n");
return NULL;
}
TRACEMS2(tinfo->emethods, 1, "trim: nr_of_ranges=%ld, output_points=%ld\n", MSGPARM(nr_of_ranges), MSGPARM(output_points));
newarray.nr_of_vectors=tinfo->nr_of_channels*nrofshifts;
newarray.nr_of_elements=output_points;
newarray.element_skip=tinfo->itemsize;
if (array_allocate(&newarray)==NULL) {
ERREXIT(tinfo->emethods, "trim: Error allocating memory.\n");
}
oldtsdata=tinfo->tsdata;
if (tinfo->xdata!=NULL) {
/* Store xchannelname at the end of xdata, as in create_xaxis(); otherwise we'll have
* a problem after free()'ing xdata... */
new_xdata=(DATATYPE *)malloc(output_points*sizeof(DATATYPE)+strlen(tinfo->xchannelname)+1);
if (new_xdata==NULL) {
ERREXIT(tinfo->emethods, "trim: Error allocating xdata memory.\n");
}
}
if (tinfo->triggers.buffer_start!=NULL) {
struct trigger trig= *(struct trigger *)tinfo->triggers.buffer_start;
growing_buf_allocate(&triggers, 0);
/* Record the file position... */
if (collapse) {
/* Make triggers in subsequent append() work as expected at least with
* continuous reading */
trig.position=local_arg->current_epoch*nr_of_ranges;
trig.code= -1;
}
growing_buf_append(&triggers, (char *)&trig, sizeof(struct trigger));
}
for (rangeno=0; rangeno<nr_of_ranges; rangeno++) {
struct range *rangep=((struct range *)(ranges.buffer_start))+rangeno;
long const old_startpoint=(rangep->offset>0 ? rangep->offset : 0);
long const new_startpoint=(rangep->offset<0 ? -rangep->offset : 0);
/*{{{ Transfer the data*/
if (old_startpoint<tinfo->nr_of_points
/* Skip this explicitly if no "real" point needs copying (length confined within negative offset)
* since otherwise an endless loop can result as the stop conditions below look at the array
* states and no array is touched... */
&& new_startpoint<rangep->length)
for (item=0; item<tinfo->itemsize; item++) {
array_use_item(&newarray, item);
for (shift=0; shift<nrofshifts; shift++) {
tinfo_array(tinfo, &myarray);
array_use_item(&myarray, item);
do {
DATATYPE sum=0.0;
long reached_length=new_startpoint;
myarray.current_element= old_startpoint;
if (collapse) {
newarray.current_element=current_output_point;
newarray.message=ARRAY_CONTINUE; /* Otherwise the loop below may finish promptly... */
if (args[ARGS_COLLAPSE].is_set)
switch (args[ARGS_COLLAPSE].arg.i) {
case COLLAPSE_BY_HIGHEST:
sum= -FLT_MAX;
break;
case COLLAPSE_BY_LOWEST:
sum= FLT_MAX;
break;
default:
break;
}
} else {
newarray.current_element=current_output_point+new_startpoint;
}
if (collapse && collapse_quantile>0.0) {
array helparray=myarray;
helparray.ringstart=ARRAY_ELEMENT(&myarray);
helparray.current_element=helparray.current_vector=0;
helparray.nr_of_vectors=1;
helparray.nr_of_elements=rangep->length;
sum=array_quantile(&helparray,collapse_quantile);
myarray.message=ARRAY_CONTINUE;
} else
do {
if (reached_length>=rangep->length) break;
if (args[ARGS_COLLAPSE].is_set) {
DATATYPE const hold=array_scan(&myarray);
switch (args[ARGS_COLLAPSE].arg.i) {
case COLLAPSE_BY_SUMMATION:
case COLLAPSE_BY_AVERAGING:
sum+=hold;
break;
case COLLAPSE_BY_HIGHEST:
if (hold>sum) sum=hold;
break;
case COLLAPSE_BY_LOWEST:
if (hold<sum) sum=hold;
break;
default:
break;
}
} else {
array_write(&newarray, array_scan(&myarray));
}
reached_length++;
} while (newarray.message==ARRAY_CONTINUE && myarray.message==ARRAY_CONTINUE);
if (collapse) {
if (args[ARGS_COLLAPSE].is_set && args[ARGS_COLLAPSE].arg.i==COLLAPSE_BY_AVERAGING && item<tinfo->itemsize-tinfo->leaveright) sum/=reached_length;
array_write(&newarray, sum);
}
if (newarray.message==ARRAY_CONTINUE) {
array_nextvector(&newarray);
}
if (myarray.message==ARRAY_CONTINUE) {
array_nextvector(&myarray);
}
} while (myarray.message==ARRAY_ENDOFVECTOR);
tinfo->tsdata+=myarray.nr_of_vectors*myarray.nr_of_elements*myarray.element_skip;
}
tinfo->tsdata=oldtsdata;
}
/*}}} */
if (new_xdata!=NULL) {
/*{{{ Transfer xdata*/
DATATYPE sum=0.0;
long reached_length=new_startpoint;
long point, newpoint;
if (collapse) {
newpoint=current_output_point;
} else {
newpoint=current_output_point+new_startpoint;
}
for (point=old_startpoint;
point<tinfo->nr_of_points && reached_length<rangep->length;
point++) {
if (collapse) {
sum+=tinfo->xdata[point];
} else {
new_xdata[newpoint]=tinfo->xdata[point];
newpoint++;
}
reached_length++;
}
if (collapse) {
/* Summation of x axis values does not appear to make sense, so we always average: */
new_xdata[newpoint]=sum/reached_length;
}
/*}}} */
/* Save xchannelname to the end of new_xdata */
strcpy((char *)(new_xdata+output_points),tinfo->xchannelname);
}
if (tinfo->triggers.buffer_start!=NULL) {
/* Collect triggers... */
struct trigger *intrig=(struct trigger *)tinfo->triggers.buffer_start+1;
while (intrig->code!=0) {
if (intrig->position>=old_startpoint && intrig->position<old_startpoint+rangep->length) {
struct trigger trig= *intrig;
if (collapse) {
trig.position=current_output_point;
} else {
trig.position=intrig->position-old_startpoint+current_output_point;
}
growing_buf_append(&triggers, (char *)&trig, sizeof(struct trigger));
}
intrig++;
}
}
current_output_point+=(collapse ? 1 : rangep->length);
}
if (new_xdata!=NULL) {
free(tinfo->xdata);
tinfo->xdata=new_xdata;
tinfo->xchannelname=(char *)(new_xdata+output_points);
}
if (tinfo->triggers.buffer_start!=NULL) {
struct trigger trig;
/* Write end marker */
trig.position=0;
trig.code=0;
growing_buf_append(&triggers, (char *)&trig, sizeof(struct trigger));
growing_buf_free(&tinfo->triggers);
tinfo->triggers=triggers;
}
tinfo->multiplexed=FALSE;
tinfo->nr_of_points=output_points;
if (tinfo->data_type==FREQ_DATA) {
tinfo->nroffreq=tinfo->nr_of_points;
} else {
tinfo->beforetrig-=((struct range *)(ranges.buffer_start))->offset;
tinfo->aftertrig=output_points-tinfo->beforetrig;
}
tinfo->length_of_output_region=tinfo->nr_of_points*tinfo->nr_of_channels*tinfo->itemsize*nrofshifts;
local_arg->current_epoch++;
growing_buf_free(&tokenbuf);
growing_buf_free(&ranges);
return newarray.start;
}
METHODDEF DATATYPE *
read_freiburg(transform_info_ptr tinfo) {
struct read_freiburg_storage *local_arg=(struct read_freiburg_storage *)tinfo->methods->local_storage;
transform_argument *args=tinfo->methods->arguments;
struct freiburg_channels_struct *in_channels=local_arg->in_channels;
array myarray;
FILE *infile;
int i, point, channel;
int trial_not_accepted;
long length_of_data;
short header[FREIBURG_HEADER_LENGTH/sizeof(short)];
char const *last_sep=strrchr(args[ARGS_IFILE].arg.s, PATHSEP);
char const *last_component=(last_sep==NULL ? args[ARGS_IFILE].arg.s : last_sep+1);
char comment[MAX_COMMENTLEN];
tinfo->nrofaverages=1;
if (args[ARGS_CONTINUOUS].is_set) {
/*{{{ Read an epoch from a continuous file*/
infile=local_arg->infile;
if (local_arg->epochs--==0) return NULL;
/*{{{ Configure myarray*/
myarray.element_skip=tinfo->itemsize=1;
myarray.nr_of_vectors=tinfo->nr_of_points=local_arg->epochlength;
myarray.nr_of_elements=tinfo->nr_of_channels=local_arg->nr_of_channels;
if (array_allocate(&myarray)==NULL) {
ERREXIT(tinfo->emethods, "read_freiburg: Error allocating data\n");
}
tinfo->multiplexed=TRUE;
/*}}} */
do {
do {
if (local_arg->segment_table.buffer_start!=NULL && local_arg->current_point%SEGMENT_LENGTH==0) {
int const segment=local_arg->current_point/SEGMENT_LENGTH;
long const nr_of_segments=local_arg->segment_table.current_length/sizeof(long);
if (segment>=nr_of_segments) {
array_free(&myarray);
return NULL;
}
fseek(infile, ((long *)local_arg->segment_table.buffer_start)[segment], SEEK_SET);
local_arg->no_last_values=TRUE;
}
if (freiburg_get_segment(tinfo, &myarray)!=0) {
array_free(&myarray);
return NULL;
}
} while (myarray.message!=ARRAY_ENDOFSCAN);
} while (--local_arg->fromepoch>0);
snprintf(comment, MAX_COMMENTLEN, "%s %s %02d/%02d/%04d,%02d:%02d:%02d", (local_arg->continuous_type==SLEEP_BT_TYPE ? "sleep_BT" : "sleep_KL"), last_component, local_arg->btfile.start_month, local_arg->btfile.start_day, local_arg->btfile.start_year, local_arg->btfile.start_hour, local_arg->btfile.start_minute, local_arg->btfile.start_second);
tinfo->sfreq=local_arg->sfreq;
/*}}} */
} else
/*{{{ Read an epoch from a single (epoched or averaged) file*/
do { /* Return here if trial was not accepted */
trial_not_accepted=FALSE;
if (local_arg->epochs--==0 || (local_arg->average_mode && local_arg->current_trigger>=1)) return NULL;
if (local_arg->average_mode) {
/*{{{ Prepare reading an averaged file*/
if((infile=fopen(args[ARGS_IFILE].arg.s,"rb"))==NULL) {
ERREXIT1(tinfo->emethods, "read_freiburg: Can't open file %s\n", MSGPARM(args[ARGS_IFILE].arg.s));
}
fseek(infile, 0, SEEK_END);
length_of_data=ftell(infile)-FREIBURG_HEADER_LENGTH;
local_arg->current_trigger++;
snprintf(comment, MAX_COMMENTLEN, "Freiburg-avg %s", last_component);
/*}}} */
} else {
/*{{{ Build pathname of the single trial to read*/
/* A directory name was given. */
char const * const expnumber=args[ARGS_IFILE].arg.s+strlen(args[ARGS_IFILE].arg.s)-2;
#ifdef __GNUC__
#define NEWFILENAME_SIZE (strlen(args[ARGS_IFILE].arg.s)+strlen(last_component)+20)
#else
#define NEWFILENAME_SIZE MAX_PATHLEN
#endif
char newfilename[NEWFILENAME_SIZE];
do { /* Files from which only the parameter part exists are rejected */
int div100=local_arg->current_trigger/100, mod100=local_arg->current_trigger%100;
snprintf(newfilename, NEWFILENAME_SIZE, "%s%c%s%02d%c%c%s%02d%02d", args[ARGS_IFILE].arg.s, PATHSEP, last_component, div100, PATHSEP, tolower(expnumber[-1]), expnumber, div100, mod100);
TRACEMS1(tinfo->emethods, 1, "read_freiburg: Constructed filename %s\n", MSGPARM(newfilename));
if((infile=fopen(newfilename,"rb"))==NULL) {
if (local_arg->current_trigger==0) {
ERREXIT1(tinfo->emethods, "read_freiburg: Can't open file %s\n", MSGPARM(newfilename));
} else {
return NULL;
}
}
fseek(infile, 0, SEEK_END);
length_of_data=ftell(infile)-FREIBURG_HEADER_LENGTH;
local_arg->current_trigger++;
} while (length_of_data==0 || --local_arg->fromepoch>0);
snprintf(comment, MAX_COMMENTLEN, "Freiburg-raw %s", last_component);
/*}}} */
}
/*{{{ Read the 64-Byte header*/
fseek(infile, 0, SEEK_SET);
fread(header, 1, FREIBURG_HEADER_LENGTH, infile);
for (i=0; i<18; i++) {
# ifdef LITTLE_ENDIAN
Intel_int16((uint16_t *)&header[i]);
# endif
TRACEMS2(tinfo->emethods, 3, "read_freiburg: Header %02d: %d\n", MSGPARM(i), MSGPARM(header[i]));
}
/*}}} */
if (local_arg->average_mode) {
if ((length_of_data/sizeof(short))%local_arg->nr_of_channels!=0) {
ERREXIT2(tinfo->emethods, "read_freiburg: length_of_data=%d does not fit with nr_of_channels=%d\n", MSGPARM(length_of_data), MSGPARM(local_arg->nr_of_channels));
}
tinfo->nr_of_points=(length_of_data/sizeof(short))/local_arg->nr_of_channels;
local_arg->sfreq=(args[ARGS_SFREQ].is_set ? args[ARGS_SFREQ].arg.d : 200.0); /* The most likely value */
} else {
local_arg->nr_of_channels=header[14];
/* Note: In a lot of experiments, one point MORE is available in the data
* than specified in the header, but this occurs erratically. We could only
* check for this during decompression, but that's probably too much fuss. */
tinfo->nr_of_points=header[16]/header[15];
local_arg->sfreq=(args[ARGS_SFREQ].is_set ? args[ARGS_SFREQ].arg.d : 1000.0/header[15]);
}
tinfo->sfreq=local_arg->sfreq;
/*{{{ Parse arguments that can be in seconds*/
local_arg->offset=(args[ARGS_OFFSET].is_set ? gettimeslice(tinfo, args[ARGS_OFFSET].arg.s) : 0);
/*}}} */
tinfo->beforetrig= -local_arg->offset;
tinfo->aftertrig=tinfo->nr_of_points+local_arg->offset;
/*{{{ Configure myarray*/
myarray.element_skip=tinfo->itemsize=1;
myarray.nr_of_vectors=tinfo->nr_of_points;
myarray.nr_of_elements=tinfo->nr_of_channels=local_arg->nr_of_channels;
if (array_allocate(&myarray)==NULL) {
ERREXIT(tinfo->emethods, "read_freiburg: Error allocating data\n");
}
tinfo->multiplexed=TRUE;
/*}}} */
fseek(infile, FREIBURG_HEADER_LENGTH, SEEK_SET);
if (local_arg->average_mode) {
/*{{{ Read averaged epoch*/
for (point=0; point<tinfo->nr_of_points; point++) {
#ifdef __GNUC__
short buffer[tinfo->nr_of_channels];
#else
short buffer[MAX_NR_OF_CHANNELS];
#endif
if ((int)fread(buffer, sizeof(short), tinfo->nr_of_channels, infile)!=tinfo->nr_of_channels) {
ERREXIT1(tinfo->emethods, "read_freiburg: Error reading data point %d\n", MSGPARM(point));
}
for (channel=0; channel<tinfo->nr_of_channels; channel++) {
# ifdef LITTLE_ENDIAN
Intel_int16((uint16_t *)&buffer[channel]);
# endif
array_write(&myarray, (DATATYPE)buffer[channel]);
}
}
/*}}} */
} else {
/*{{{ Read compressed single trial*/
# ifdef DISPLAY_ADJECTIVES
char *adjektiv_ende=strchr(((char *)header)+36, ' ');
if (adjektiv_ende!=NULL) *adjektiv_ende='\0';
printf("Single trial: nr_of_points=%d, nr_of_channels=%d, Adjektiv=%s\n", tinfo->nr_of_points, tinfo->nr_of_channels, ((char *)header)+36);
# endif
local_arg->infile=infile;
do {
if (freiburg_get_segment(tinfo, &myarray)!=0) {
TRACEMS1(tinfo->emethods, 0, "read_freiburg: Decompression out of bounds for trial %d - skipped\n", MSGPARM(local_arg->current_trigger-1));
array_free(&myarray);
trial_not_accepted=TRUE;
break;
}
} while (myarray.message!=ARRAY_ENDOFSCAN);
/*}}} */
}
fclose(infile);
} while (trial_not_accepted);
/*}}} */
/*{{{ Look for a Freiburg channel setup for this number of channels*/
/* Force create_channelgrid to really allocate the channel info anew.
* Otherwise, free_tinfo will free someone else's data ! */
tinfo->channelnames=NULL; tinfo->probepos=NULL;
if (local_arg->channelnames!=NULL) {
copy_channelinfo(tinfo, local_arg->channelnames, NULL);
} else {
while (in_channels->nr_of_channels!=0 && in_channels->nr_of_channels!=tinfo->nr_of_channels) in_channels++;
if (in_channels->nr_of_channels==0) {
TRACEMS1(tinfo->emethods, 1, "read_freiburg: Don't have a setup for %d channels.\n", MSGPARM(tinfo->nr_of_channels));
} else {
copy_channelinfo(tinfo, in_channels->channelnames, NULL);
}
}
create_channelgrid(tinfo); /* Create defaults for any missing channel info */
/*}}} */
if ((tinfo->comment=(char *)malloc(strlen(comment)+1))==NULL) {
ERREXIT(tinfo->emethods, "read_freiburg: Error allocating comment memory\n");
}
strcpy(tinfo->comment, comment);
if (local_arg->zero_idiotism_warned==FALSE && local_arg->zero_idiotism_encountered) {
TRACEMS(tinfo->emethods, 0, "read_freiburg: All-zero data points have been encountered and omitted!\n");
local_arg->zero_idiotism_warned=TRUE;
}
tinfo->z_label=NULL;
tinfo->tsdata=myarray.start;
tinfo->length_of_output_region=tinfo->nr_of_channels*tinfo->nr_of_points;
tinfo->leaveright=0;
tinfo->data_type=TIME_DATA;
return tinfo->tsdata;
}