/*{{{ 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; }
/*{{{ 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; }