void Image_Handler(FCGIContext * context, char * params)
{
int num = 0, width = 800, height = 600;
FCGIValue val[] = {
{"num", &num, FCGI_INT_T},
{"width", &width, FCGI_INT_T},
{"height", &height, FCGI_INT_T}
};
if (!FCGI_ParseRequest(context, params, val, 3))
return;
else if (num < 0 || num > 1) {
FCGI_RejectJSON(context, "Invalid capture number");
return;
} else if (width <= 0 || height <= 0) {
FCGI_RejectJSON(context, "Invalid width/height");
return;
}
if (captureID != num) {
if (captureID >= 0) {
cvReleaseCapture(&capture);
}
capture = cvCreateCameraCapture(num);
captureID = num;
}
cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH, width);
cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT, height);
static int p[] = {CV_IMWRITE_JPEG_QUALITY, 100, 0};
IplImage * frame = cvQueryFrame(capture);
assert(frame != NULL);
// CvMat stub;
// CvMat * background = cvGetMat(frame, &stub, 0, 0);
// CvMat *cv8u = cvCreateMat(frame->width, frame->height, CV_8U);
// double min, max;
// CvPoint a,b;
// cvMinMaxLoc(background, &min, &max, &a, &b, 0);
// double ccscale = 255.0/(max-min);
// double ccshift = -min;
//cvCvtScale(frame, cv8u, ccscale, ccshift);
CvMat * jpg = cvEncodeImage(".jpg", frame, p);
// Will this work?
Log(LOGNOTE, "Sending image!");
FCGI_PrintRaw("Content-type: image/jpg\r\n");
FCGI_PrintRaw("Cache-Control: no-cache, no-store, must-revalidate\r\n\r\n");
//FCGI_PrintRaw("Content-Length: %d", jpg->rows*jpg->cols);
FCGI_WriteBinary(jpg->data.ptr,1,jpg->rows*jpg->cols);
cvReleaseMat(&jpg);
cvReleaseImageHeader(&frame);
}
/**
* Helper: Begin Actuator response in a given format
* @param context - the FCGIContext
* @param format - Format
* @param id - ID of Actuator
*/
void Actuator_BeginResponse(FCGIContext * context, Actuator * a, DataFormat format)
{
// Begin response
switch (format)
{
case JSON:
FCGI_BeginJSON(context, STATUS_OK);
FCGI_JSONLong("id", a->id);
FCGI_JSONLong("user_id", a->user_id); //TODO: Don't need to show this?
FCGI_JSONPair("name", a->name);
break;
default:
FCGI_PrintRaw("Content-type: text/plain\r\n\r\n");
break;
}
}
/**
* Helper: Begin sensor response in a given format
* @param context - the FCGIContext
* @param id - ID of sensor
* @param format - Format
*/
void Sensor_BeginResponse(FCGIContext * context, Sensor * s, DataFormat format)
{
// Begin response
switch (format)
{
case JSON:
FCGI_BeginJSON(context, STATUS_OK);
FCGI_JSONLong("id", s->id);
FCGI_JSONLong("user_id", s->user_id); //NOTE: Might not want to expose this?
FCGI_JSONPair("name", s->name);
break;
default:
FCGI_PrintRaw("Content-type: text/plain\r\n\r\n");
break;
}
}
