server/image.c

   1 #include "cv.h"
   2 #include "highgui_c.h"
   3 #include "image.h"
   4 #include <string.h>
   5 #include <stdio.h>
   6
   7 CvCapture *captures[2] = {0};
   8
   9 void Image_Handler(FCGIContext * context, char * params)
  10 {
  11         int num = 0, width = 800, height = 600;
  12         FCGIValue val[] = {
  13                 {"num", &num, FCGI_INT_T},
  14                 {"width", &width, FCGI_INT_T},
  15                 {"height", &height, FCGI_INT_T}
  16         };
  17         if (!FCGI_ParseRequest(context, params, val, 3))
  18                 return;
  19         else if (num < 0 || num > 1) {
  20                 FCGI_RejectJSON(context, "Invalid capture number");
  21                 return;
  22         } else if (width <= 0 || height <= 0) {
  23                 FCGI_RejectJSON(context, "Invalid width/height");
  24                 return;
  25         }
  26
  27         CvCapture *capture = captures[num];
  28         if (capture == NULL) {
  29                 capture = cvCreateCameraCapture(num);
  30                 captures[num] = capture;
  31         }
  32
  33         cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH, width);
  34         cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT, height);
  35
  36         static int p[] = {CV_IMWRITE_JPEG_QUALITY, 100, 0};
  37
  38         IplImage * frame = cvQueryFrame(capture);
  39         assert(frame != NULL);
  40
  41 //        CvMat stub;
  42  //       CvMat * background = cvGetMat(frame, &stub, 0, 0);
  43
  44 //      CvMat *cv8u = cvCreateMat(frame->width, frame->height, CV_8U);
  45 //      double min, max;
  46 //      CvPoint a,b;
  47 //      cvMinMaxLoc(background, &min, &max, &a, &b, 0);
  48
  49 //      double ccscale = 255.0/(max-min);
  50 //      double ccshift = -min;
  51         //cvCvtScale(frame, cv8u, ccscale, ccshift);
  52         CvMat * jpg = cvEncodeImage(".jpg", frame, p);
  53
  54         // Will this work?
  55         Log(LOGNOTE, "Sending image!");
  56         FCGI_PrintRaw("Content-type: image/jpg\r\n");
  57         FCGI_PrintRaw("Cache-Control: no-cache, no-store, must-revalidate\r\n\r\n");
  58         //FCGI_PrintRaw("Content-Length: %d", jpg->rows*jpg->cols);
  59         FCGI_WriteBinary(jpg->data.ptr,1,jpg->rows*jpg->cols);
  60
  61         cvReleaseMat(&jpg);
  62         cvReleaseImageHeader(&frame);
  63 }