int main(int argc, char *argv[]) {
char *query; /* the query used to find the video stream */
lsl_streaminfo result,info; /* the streaminfo returned by the resolve call, and the one associated with the inlet */
lsl_inlet inlet; /* a stream inlet to get samples from */
int errcode; /* error code (lsl_lost_error or timeouts) */
int width,height,channels; /* image parameters */
IplImage* img; /* OpenCV image struct */
char *name; /* name of the stream that we resolved */
query = argc>1 ? argv[1] : default_query;
while (1) {
/* resolve the stream of interest (result array, array capacity: 1 element, predicate is our query, resolve at least 1 stream, wait forever if necessary) */
printf("Now waiting for a stream with %s...",query);
lsl_resolve_bypred(&result,1,query,1,LSL_FOREVER);
printf("done.\n");
/* make an inlet to read data from the stream (buffer max. 1 seconds of data, no preference regarding chunking, automatic recovery disabled) */
inlet = lsl_create_inlet(result, 1, LSL_NO_PREFERENCE, 0);
/* get the stream meta-data */
info = lsl_get_fullinfo(inlet,LSL_FOREVER,&errcode);
name = lsl_get_name(info);
width = atoi(lsl_child_value_n(lsl_child(lsl_get_desc(info),"encoding"),"width"));
height = atoi(lsl_child_value_n(lsl_child(lsl_get_desc(info),"encoding"),"height"));
channels = atoi(lsl_child_value_n(lsl_child(lsl_get_desc(info),"encoding"),"color_channels"));
/* allocate an OpenCV image*/
img = cvCreateImage(cvSize(width,height),IPL_DEPTH_8S,channels);
/* create a window */
cvNamedWindow(name, CV_WINDOW_AUTOSIZE);
cvMoveWindow(name, 100, 100);
while (true) {
/* get a new sample */
lsl_pull_sample_c(inlet,img->imageData,width*height*channels,LSL_FOREVER,&errcode);
if (errcode)
break;
/* display */
cvShowImage(name, img);
if ((char)cvWaitKey(1)==27)
return 0;
}
cvReleaseImage(&img);
cvDestroyWindow(name);
lsl_destroy_inlet(inlet);
lsl_destroy_streaminfo(info);
lsl_destroy_streaminfo(result);
}
return 0;
}
void __fastcall TMainCaptureForm::BitBtnPlayClick(TObject *Sender)
{
if(outlet) {
lsl_destroy_outlet(outlet);
outlet = NULL;
}
double requestedFrameRate = edtRequestedFrameRate->Text.ToDouble();
lsl_streaminfo info = lsl_create_streaminfo("VideoStream_0","VideoStream_0",1,requestedFrameRate,cft_int32,"");
lsl_xml_ptr desc = lsl_get_desc(info);
lsl_xml_ptr chn = lsl_append_child(desc, "channels");
lsl_append_child_value(chn, "name","frame");
lsl_append_child_value(chn,"unit","number");
lsl_xml_ptr sync = lsl_append_child(desc, "synchronization");
lsl_append_child_value(sync, "can_drop_samples", "true");
outlet = lsl_create_outlet(info,0,360);
cbVideoInputDevice->Enabled = false;
cbVideoInput->Enabled = false;
cbVideoInputFormat->Enabled = false;
SpatialDivisorEdit->Enabled = false;
cbRecord->Enabled =false;
Start(CaptureWorkerForm, edOutput0->Text, bmpQueue, hMutex, outlet, requestedFrameRate);
frameThread = new TFrameThread(this, bmpQueue, hMutex, false);
BitBtnStop->Enabled=true;
BitBtnPlay->Enabled=false;
edtFrameRate->Text = FormatFloat ("0.00", CaptureWorkerForm->VideoGrabber->CurrentFrameRate);
double ratio = requestedFrameRate/CaptureWorkerForm->VideoGrabber->CurrentFrameRate;
if(ratio > 1.02 || ratio < .98) {
edtFrameRate->Text = FormatFloat ("0.00", CaptureWorkerForm->VideoGrabber->CurrentFrameRate);
Application->MessageBoxA(L"Camera 0 unable to display requested frame rate.", L"Error", MB_OK);
btStopClick(this);
return;
}
}
int _tmainxx(int argc, _TCHAR* argv[])
{
int nChannels = 9;
// char *channels[] = {"C3","C4","Cz","FPz","POz","CPz","O1","O2"};
int t,c; /* time point and channel index */
lsl_streaminfo info; /* out stream declaration object */
lsl_xml_ptr desc, chn; /* some xml element pointers */
lsl_outlet outlet; /* stream outlet */
double starttime; /* used for send timing */
float cursample[9]; /* the current sample */
/* declare a new streaminfo (8 channels, 100 Hz, float-formatted, some pseudo device id */
info = lsl_create_streaminfo("BioSemi","EEG",nChannels,100,cft_float32,"325wqer4354");
/* add some meta-data fields to it */
desc = lsl_get_desc(info);
lsl_append_child_value(desc,"manufacturer","BioSemi");
/* for (c=0;c<8;c++) {
chn = lsl_append_child(desc,"channels");
lsl_append_child_value(chn,"name",channels[c]);
lsl_append_child_value(chn,"unit","microvolts");
lsl_append_child_value(chn,"type","EEG");
}
*/
/* make a new outlet */
outlet = lsl_create_outlet(info,0,360);
/* send data forever */
printf("Now sending data...\n");
starttime = ((double)clock())/CLOCKS_PER_SEC;
for(t=0;;t++) {
for (c=0;c<nChannels;c++)
cursample[c] = (float)((rand()%1500)/500.0-1.5);
lsl_push_sample_f(outlet,cursample);
while (((double)clock())/CLOCKS_PER_SEC < starttime + t*0.01);
}
/* we never get here, buy anyway */
lsl_destroy_outlet(outlet);
return 0;
}
int main(int argc, char* argv[]) {
int t,c; /* time point and channel index */
lsl_streaminfo info; /* out stream declaration object */
lsl_xml_ptr desc, chn, chns;/* some xml element pointers */
lsl_outlet outlet; /* stream outlet */
double starttime; /* used for send timing */
float cursample[8]; /* the current sample */
/* declare a new streaminfo (name: BioSemi, content type: EEG, 8 channels, 100 Hz, float values, some made-up device id (can also be empty) */
info = lsl_create_streaminfo("BioSemi","EEG",8,100,cft_float32,"325wqer4354");
/* add some meta-data fields to it */
/* (for more standard fields, see https://github.com/sccn/xdf/wiki/Meta-Data) */
desc = lsl_get_desc(info);
lsl_append_child_value(desc,"manufacturer","BioSemi");
chns = lsl_append_child(desc,"channels");
for (c=0;c<8;c++) {
chn = lsl_append_child(chns,"channel");
lsl_append_child_value(chn,"label",channels[c]);
lsl_append_child_value(chn,"unit","microvolts");
lsl_append_child_value(chn,"type","EEG");
}
/* make a new outlet (chunking: default, buffering: 360 seconds) */
outlet = lsl_create_outlet(info,0,360);
/* send data forever (note: this loop is keeping the CPU busy, normally one would sleep or yield here) */
printf("Now sending data...\n");
starttime = ((double)clock())/CLOCKS_PER_SEC;
for(t=0;;t++) {
for (c=0;c<8;c++)
cursample[c] = (float)((rand()%1500)/500.0-1.5);
lsl_push_sample_f(outlet,cursample);
while (((double)clock())/CLOCKS_PER_SEC < starttime + t*0.01);
}
/* we never get here, buy anyway */
lsl_destroy_outlet(outlet);
return 0;
}
int _tmain(int argc, _TCHAR* argv[])
{
int nChannels = 40;
int nMarkers = nChannels/4;
double samplesPerSec = 440;
char *channels[40];
int t,c,m; /* time point and channel index */
lsl_streaminfo info; /* out stream declaration object */
lsl_xml_ptr desc, chn, chns; /* some xml element pointers */
lsl_outlet outlet; /* stream outlet */
double starttime; /* used for send timing */
float cursample[40]; /* the current sample */
char chanName[256];
/* declare a new streaminfo (8 channels, 100 Hz, float-formatted, some pseudo device id */
info = lsl_create_streaminfo("PhaseSpace","Mocap",nChannels,samplesPerSec,cft_float32,"76sfsfdsdfa67");
/* add some meta-data fields to it */
desc = lsl_get_desc(info);
lsl_append_child_value(desc,"manufacturer","Phasespace");
chns = lsl_append_child(desc,"channels");
for (c=0;c<nMarkers;c++) {
chn = lsl_append_child(chns,"channel");
sprintf(chanName, "Marker%d_X", c);
lsl_append_child_value(chn, "label", chanName);
lsl_append_child_value(chn,"type","PositionX");
lsl_append_child_value(chn,"unit","meters");
chn = lsl_append_child(chns,"channel");
sprintf(chanName, "Marker%d_Y", c);
lsl_append_child_value(chn, "label", chanName);
lsl_append_child_value(chn,"type","PositionY");
lsl_append_child_value(chn,"unit","meters");
chn = lsl_append_child(chns,"channel");
sprintf(chanName, "Marker%d_Z", c);
lsl_append_child_value(chn, "label", chanName);
lsl_append_child_value(chn,"type","PositionY");
lsl_append_child_value(chn,"unit","meters");
}
/* make a new outlet */
outlet = lsl_create_outlet(info,0,360);
/* send data forever */
printf("Now sending data...\n");
starttime = ((double)clock())/CLOCKS_PER_SEC;
float x = 0;
float y = 0;
float z = 0;
for(t=0;;t++) {
for(m=0, c=0; m<nMarkers; m++) {
x++;
if(t%3 == 0) y++;
if(t%5 == 0) z++;
cursample[c++] = sin(degToRad((x-360*m)/10.0))*.1;
cursample[c++] = sin(degToRad((y-360*m)/10.0))*.1;
cursample[c++] = sin(degToRad((z-360*m)/10.0))*.1;
cursample[c++] = (float)((rand()%1500)/500.0-1.5)*.001;
}
lsl_push_sample_f(outlet,cursample);
while (((double)clock())/CLOCKS_PER_SEC < starttime + t/samplesPerSec) {
Sleep(1);
}
// printf("here %d\n", t);
}
/* we never get here, but anyway */
lsl_destroy_outlet(outlet);
return 0;
}
