Fixed gpu_id for DLL/SO

AlexeyAB

2018-03-19 ced198e9390195875d743d77eadece99c7fd5b38

 src/demo.c

@@ -143,6 +143,7 @@
        printf("video file: %s\n", filename);
        cap = cvCaptureFromFile(filename);
    }else{
      printf("Webcam index: %d\n", cam_index);
        cap = cvCaptureFromCAM(cam_index);
    }

@@ -233,7 +234,7 @@
            }

         // if you run it with param -http_port 8090  then open URL in your web-browser: http://localhost:8090
         if (http_stream_port > 0) {
         if (http_stream_port > 0 && show_img) {
            //int port = 8090;
            int port = http_stream_port;
            int timeout = 200;
@@ -242,10 +243,11 @@
         }

         // save video file
         if (output_video_writer) {
         if (output_video_writer && show_img) {
            cvWriteFrame(output_video_writer, show_img);
            printf("\n cvWriteFrame \n");
         }

         cvReleaseImage(&show_img);

            pthread_join(fetch_thread, 0);