Add try-catch to the http_stream.cpp

src/http_stream.cpp

@@ -6,6 +6,13 @@
 //  on win, _WIN32 has to be defined, must link against ws2_32.lib (socks on linux are for free)
 //
 
+#include <cstdio>
+#include <vector>
+#include <iostream>
+#include <algorithm>
+using std::cerr;
+using std::endl;
+
 //
 // socket related abstractions:
 //
@@ -33,7 +40,7 @@ static int close_socket(SOCKET s) {
     free(buf);
     int close_input = ::shutdown(s, 0);
     int result = ::closesocket(s);
-    printf("Close socket: out = %d, in = %d \n", close_output, close_input);
+    cerr << "Close socket: out = " << close_output << ", in = " << close_input << " \n";
     return result;
 }
 #else   // nix
@@ -72,17 +79,11 @@ static int close_socket(SOCKET s) {
     free(buf);
     int close_input = ::shutdown(s, 0);
     int result = close(s);
-    printf("Close socket: out = %d, in = %d \n", close_output, close_input);
+    std::cerr << "Close socket: out = " << close_output << ", in = " << close_input << " \n";
     return result;
 }
 #endif // _WIN32
 
-#include <cstdio>
-#include <vector>
-#include <iostream>
-#include <algorithm>
-using std::cerr;
-using std::endl;
 
 #include "opencv2/opencv.hpp"
 #include "opencv2/highgui/highgui.hpp"
@@ -243,7 +244,7 @@ public:
             {
                 if (close_all_sockets) {
                     int result = close_socket(s);
-                    printf("MJPG_sender: close clinet: %d \n", result);
+                    cerr << "MJPG_sender: close clinet: " << result << " \n";
                     continue;
                 }
 
@@ -262,7 +263,7 @@ public:
         }
         if (close_all_sockets) {
             int result = close_socket(sock);
-            printf("MJPG_sender: close acceptor: %d \n\n", result);
+            cerr << "MJPG_sender: close acceptor: " << result << " \n\n";
         }
         return true;
     }
@@ -271,11 +272,16 @@ public:
 
 void send_mjpeg(IplImage* ipl, int port, int timeout, int quality)
 {
+    try {
         static MJPG_sender wri(port, timeout, quality);
         cv::Mat mat = cv::cvarrToMat(ipl);
         wri.write(mat);
         std::cout << " MJPEG-stream sent. \n";
     }
+    catch (...) {
+        cerr << " Error in send_mjpeg() function \n";
+    }
+}
 // ----------------------------------------
 
 class JSON_sender
@@ -436,14 +442,14 @@ public:
 
                 if (close_all_sockets) {
                     int result = close_socket(s);
-                    printf("JSON_sender: close clinet: %d \n", result);
+                    cerr << "JSON_sender: close clinet: " << result << " \n";
                     continue;
                 }
             }
         }
         if (close_all_sockets) {
             int result = close_socket(sock);
-            printf("JSON_sender: close acceptor: %d \n\n", result);
+            cerr << "JSON_sender: close acceptor: " << result << " \n\n";
         }
         return true;
     }
@@ -452,6 +458,7 @@ public:
 
 void send_json(detection *dets, int nboxes, int classes, char **names, long long int frame_id, int port, int timeout)
 {
+    try {
         static JSON_sender js(port, timeout);
         char *send_buf = detection_to_json(dets, nboxes, classes, names, frame_id, NULL);
 
@@ -459,6 +466,10 @@ void send_json(detection *dets, int nboxes, int classes, char **names, long long
         std::cout << " JSON-stream sent. \n";
         free(send_buf);
     }
+    catch (...) {
+        cerr << " Error in send_json() function \n";
+    }
+}
 
 // ----------------------------------------
 
@@ -468,7 +479,7 @@ CvCapture* get_capture_video_stream(char *path) {
         cap = (CvCapture*)new cv::VideoCapture(path);
     }
     catch (...) {
-        std::cout << " Error: video-stream " << path << " can't be opened! \n";
+        cerr << " Error: video-stream " << path << " can't be opened! \n";
     }
     return cap;
 }
@@ -482,7 +493,7 @@ CvCapture* get_capture_webcam(int index) {
         //((cv::VideoCapture*)cap)->set(CV_CAP_PROP_FRAME_HEIGHT, 960);
     }
     catch (...) {
-        std::cout << " Error: Web-camera " << index << " can't be opened! \n";
+        cerr << " Error: Web-camera " << index << " can't be opened! \n";
     }
     return cap;
 }
@@ -520,7 +531,7 @@ int get_stream_fps_cpp(CvCapture *cap) {
 #endif
     }
     catch (...) {
-        std::cout << " Can't get FPS of source videofile. For output video FPS = 25 by default. \n";
+        cerr << " Can't get FPS of source videofile. For output video FPS = 25 by default. \n";
     }
     return fps;
 }
@@ -533,6 +544,8 @@ image image_data_augmentation(IplImage* ipl, int w, int h,
     int pleft, int ptop, int swidth, int sheight, int flip,
     float jitter, float dhue, float dsat, float dexp)
 {
+    image out;
+    try {
         cv::Mat img = cv::cvarrToMat(ipl);
 
         // crop
@@ -587,8 +600,12 @@ image image_data_augmentation(IplImage* ipl, int w, int h,
 
         // Mat -> IplImage -> image
         IplImage src = sized;
-    image out = ipl_to_image(&src);
-
+        out = ipl_to_image(&src);
+    }
+    catch (...) {
+        cerr << "OpenCV can't augment image: " << w  << " x " << h << " \n";
+        out = ipl_to_image(ipl);
+    }
     return out;
 }
 
@@ -603,7 +620,7 @@ image load_image_resize(char *filename, int w, int h, int c, image *im)
         else if (c == 1) { flag = 0; img = cv::Mat(h, w, CV_8UC1); }
         else if (c == 3) { flag = 1; img = cv::Mat(h, w, CV_8UC3); }
         else {
-            fprintf(stderr, "OpenCV can't force load with %d channels\n", c);
+            cerr << "OpenCV can't force load with " << c << " channels\n";
         }
         //throw std::runtime_error("runtime_error");
         cv::Mat loaded_image = cv::imread(filename, flag);
@@ -617,7 +634,7 @@ image load_image_resize(char *filename, int w, int h, int c, image *im)
         out = ipl_to_image(&tmp2);
     }
     catch (...) {
-        fprintf(stderr, "OpenCV can't load image %s channels\n", filename);
+        cerr << "OpenCV can't load image %s " << filename << " \n";
         out = make_image(w, h, c);
         *im = make_image(w, h, c);
     }