From bff7644f31501fb8dd547e032e5ef6de67cf673e Mon Sep 17 00:00:00 2001
From: Tino Hager <tino.hager@nager.at>
Date: Wed, 27 Jun 2018 21:59:10 +0000
Subject: [PATCH] remove max_objects

---
 src/demo.c |  247 ++++++++++++++++++++++++++++++++++++++-----------
 1 files changed, 190 insertions(+), 57 deletions(-)

diff --git a/src/demo.c b/src/demo.c
index 6c653a9..34627ce 100644
--- a/src/demo.c
+++ b/src/demo.c
@@ -7,49 +7,82 @@
 #include "box.h"
 #include "image.h"
 #include "demo.h"
+#ifdef WIN32
+#include <time.h>
+#include <winsock.h>
+#include "gettimeofday.h"
+#else
 #include <sys/time.h>
+#endif
 
 #define FRAMES 3
 
 #ifdef OPENCV
 #include "opencv2/highgui/highgui_c.h"
 #include "opencv2/imgproc/imgproc_c.h"
+#include "opencv2/core/version.hpp"
+#ifndef CV_VERSION_EPOCH
+#include "opencv2/videoio/videoio_c.h"
+#endif
+#include "http_stream.h"
 image get_image_from_stream(CvCapture *cap);
 
 static char **demo_names;
-static image *demo_alphabet;
+static image **demo_alphabet;
 static int demo_classes;
 
 static float **probs;
 static box *boxes;
 static network net;
-static image in   ;
 static image in_s ;
-static image det  ;
 static image det_s;
-static image disp = {0};
 static CvCapture * cap;
+static int cpp_video_capture = 0;
 static float fps = 0;
 static float demo_thresh = 0;
+static int demo_ext_output = 0;
 
 static float *predictions[FRAMES];
 static int demo_index = 0;
 static image images[FRAMES];
+static IplImage* ipl_images[FRAMES];
 static float *avg;
 
+void draw_detections_cv(IplImage* show_img, int num, float thresh, box *boxes, float **probs, char **names, image **alphabet, int classes);
+void draw_detections_cv_v3(IplImage* show_img, detection *dets, int num, float thresh, char **names, image **alphabet, int classes, int ext_output);
+void show_image_cv_ipl(IplImage *disp, const char *name);
+image get_image_from_stream_resize(CvCapture *cap, int w, int h, int c, IplImage** in_img, int cpp_video_capture, int dont_close);
+image get_image_from_stream_letterbox(CvCapture *cap, int w, int h, int c, IplImage** in_img, int cpp_video_capture, int dont_close);
+int get_stream_fps(CvCapture *cap, int cpp_video_capture);
+IplImage* in_img;
+IplImage* det_img;
+IplImage* show_img;
+
+static int flag_exit;
+static int letter_box = 0;
+
 void *fetch_in_thread(void *ptr)
 {
-    in = get_image_from_stream(cap);
-    if(!in.data){
-        error("Stream closed.");
+    //in = get_image_from_stream(cap);
+	int dont_close_stream = 0;	// set 1 if your IP-camera periodically turns off and turns on video-stream
+	if(letter_box) 
+		in_s = get_image_from_stream_letterbox(cap, net.w, net.h, net.c, &in_img, cpp_video_capture, dont_close_stream);
+	else
+		in_s = get_image_from_stream_resize(cap, net.w, net.h, net.c, &in_img, cpp_video_capture, dont_close_stream);
+    if(!in_s.data){
+        //error("Stream closed.");
+		printf("Stream closed.\n");
+		flag_exit = 1;
+		return EXIT_FAILURE;
     }
-    in_s = resize_image(in, net.w, net.h);
+    //in_s = resize_image(in, net.w, net.h);
+	
     return 0;
 }
 
 void *detect_in_thread(void *ptr)
 {
-    float nms = .4;
+    float nms = .45;	// 0.4F
 
     layer l = net.layers[net.n-1];
     float *X = det_s.data;
@@ -60,26 +93,30 @@
     l.output = avg;
 
     free_image(det_s);
-    if(l.type == DETECTION){
-        get_detection_boxes(l, 1, 1, demo_thresh, probs, boxes, 0);
-    } else if (l.type == REGION){
-        get_region_boxes(l, 1, 1, demo_thresh, probs, boxes, 0);
-    } else {
-        error("Last layer must produce detections\n");
-    }
-    if (nms > 0) do_nms(boxes, probs, l.w*l.h*l.n, l.classes, nms);
+
+	int nboxes = 0;
+	detection *dets = NULL;
+	if (letter_box)
+		dets = get_network_boxes(&net, in_img->width, in_img->height, demo_thresh, demo_thresh, 0, 1, &nboxes, 1); // letter box
+	else
+		dets = get_network_boxes(&net, det_s.w, det_s.h, demo_thresh, demo_thresh, 0, 1, &nboxes, 0); // resized
+	//if (nms) do_nms_obj(dets, nboxes, l.classes, nms);	// bad results
+	if (nms) do_nms_sort(dets, nboxes, l.classes, nms);
+	
+
     printf("\033[2J");
     printf("\033[1;1H");
     printf("\nFPS:%.1f\n",fps);
     printf("Objects:\n\n");
 
-    images[demo_index] = det;
-    det = images[(demo_index + FRAMES/2 + 1)%FRAMES];
+	ipl_images[demo_index] = det_img;
+	det_img = ipl_images[(demo_index + FRAMES / 2 + 1) % FRAMES];
     demo_index = (demo_index + 1)%FRAMES;
+	    
+	draw_detections_cv_v3(det_img, dets, nboxes, demo_thresh, demo_names, demo_alphabet, demo_classes, demo_ext_output);
+	free_detections(dets, nboxes);
 
-    draw_detections(det, l.w*l.h*l.n, demo_thresh, boxes, probs, demo_names, demo_alphabet, demo_classes);
-
-    return 0;
+	return 0;
 }
 
 double get_wall_time()
@@ -91,31 +128,50 @@
     return (double)time.tv_sec + (double)time.tv_usec * .000001;
 }
 
-void demo(char *cfgfile, char *weightfile, float thresh, int cam_index, const char *filename, char **names, int classes, int frame_skip, char *prefix)
+void demo(char *cfgfile, char *weightfile, float thresh, float hier_thresh, int cam_index, const char *filename, char **names, int classes,
+	int frame_skip, char *prefix, char *out_filename, int http_stream_port, int dont_show, int ext_output)
 {
     //skip = frame_skip;
-    image *alphabet = load_alphabet();
+    image **alphabet = load_alphabet();
     int delay = frame_skip;
     demo_names = names;
     demo_alphabet = alphabet;
     demo_classes = classes;
     demo_thresh = thresh;
+	demo_ext_output = ext_output;
     printf("Demo\n");
-    net = parse_network_cfg(cfgfile);
+    net = parse_network_cfg_custom(cfgfile, 1);	// set batch=1
     if(weightfile){
         load_weights(&net, weightfile);
     }
-    set_batch_network(&net, 1);
-
+    //set_batch_network(&net, 1);
+	fuse_conv_batchnorm(net);
     srand(2222222);
 
     if(filename){
-        cap = cvCaptureFromFile(filename);
+        printf("video file: %s\n", filename);
+//#ifdef CV_VERSION_EPOCH	// OpenCV 2.x
+//		cap = cvCaptureFromFile(filename);
+//#else					// OpenCV 3.x
+		cpp_video_capture = 1;
+		cap = get_capture_video_stream(filename);
+//#endif
     }else{
-        cap = cvCaptureFromCAM(cam_index);
+		printf("Webcam index: %d\n", cam_index);
+//#ifdef CV_VERSION_EPOCH	// OpenCV 2.x
+//        cap = cvCaptureFromCAM(cam_index);
+//#else					// OpenCV 3.x
+		cpp_video_capture = 1;
+		cap = get_capture_webcam(cam_index);
+//#endif
     }
 
-    if(!cap) error("Couldn't connect to webcam.\n");
+	if (!cap) {
+#ifdef WIN32
+		printf("Check that you have copied file opencv_ffmpeg340_64.dll to the same directory where is darknet.exe \n");
+#endif
+		error("Couldn't connect to webcam.\n");
+	}
 
     layer l = net.layers[net.n-1];
     int j;
@@ -128,34 +184,52 @@
     probs = (float **)calloc(l.w*l.h*l.n, sizeof(float *));
     for(j = 0; j < l.w*l.h*l.n; ++j) probs[j] = (float *)calloc(l.classes, sizeof(float *));
 
+	flag_exit = 0;
+
     pthread_t fetch_thread;
     pthread_t detect_thread;
 
     fetch_in_thread(0);
-    det = in;
+	det_img = in_img;
     det_s = in_s;
 
     fetch_in_thread(0);
     detect_in_thread(0);
-    disp = det;
-    det = in;
+	det_img = in_img;
     det_s = in_s;
 
     for(j = 0; j < FRAMES/2; ++j){
         fetch_in_thread(0);
         detect_in_thread(0);
-        disp = det;
-        det = in;
+		det_img = in_img;
         det_s = in_s;
     }
 
     int count = 0;
-    if(!prefix){
+    if(!prefix && !dont_show){
         cvNamedWindow("Demo", CV_WINDOW_NORMAL); 
         cvMoveWindow("Demo", 0, 0);
         cvResizeWindow("Demo", 1352, 1013);
     }
 
+	CvVideoWriter* output_video_writer = NULL;    // cv::VideoWriter output_video;
+	if (out_filename && !flag_exit)
+	{
+		CvSize size;
+		size.width = det_img->width, size.height = det_img->height;
+		int src_fps = 25;
+		src_fps = get_stream_fps(cap, cpp_video_capture);
+
+		//const char* output_name = "test_dnn_out.avi";
+		//output_video_writer = cvCreateVideoWriter(out_filename, CV_FOURCC('H', '2', '6', '4'), src_fps, size, 1);
+		output_video_writer = cvCreateVideoWriter(out_filename, CV_FOURCC('D', 'I', 'V', 'X'), src_fps, size, 1);
+		//output_video_writer = cvCreateVideoWriter(out_filename, CV_FOURCC('M', 'J', 'P', 'G'), src_fps, size, 1);
+		//output_video_writer = cvCreateVideoWriter(out_filename, CV_FOURCC('M', 'P', '4', 'V'), src_fps, size, 1);
+		//output_video_writer = cvCreateVideoWriter(out_filename, CV_FOURCC('M', 'P', '4', '2'), src_fps, size, 1);
+		//output_video_writer = cvCreateVideoWriter(out_filename, CV_FOURCC('X', 'V', 'I', 'D'), src_fps, size, 1);
+		//output_video_writer = cvCreateVideoWriter(out_filename, CV_FOURCC('W', 'M', 'V', '2'), src_fps, size, 1);
+	}
+
     double before = get_wall_time();
 
     while(1){
@@ -165,40 +239,66 @@
             if(pthread_create(&detect_thread, 0, detect_in_thread, 0)) error("Thread creation failed");
 
             if(!prefix){
-                show_image(disp, "Demo");
-                int c = cvWaitKey(1);
-                if (c == 10){
-                    if(frame_skip == 0) frame_skip = 60;
-                    else if(frame_skip == 4) frame_skip = 0;
-                    else if(frame_skip == 60) frame_skip = 4;   
-                    else frame_skip = 0;
-                }
+				if (!dont_show) {
+					show_image_cv_ipl(show_img, "Demo");
+					int c = cvWaitKey(1);
+					if (c == 10) {
+						if (frame_skip == 0) frame_skip = 60;
+						else if (frame_skip == 4) frame_skip = 0;
+						else if (frame_skip == 60) frame_skip = 4;
+						else frame_skip = 0;
+					}
+					else if (c == 27 || c == 1048603) // ESC - exit (OpenCV 2.x / 3.x)
+					{
+						flag_exit = 1;
+					}
+				}
             }else{
                 char buff[256];
-                sprintf(buff, "%s_%08d", prefix, count);
-                save_image(disp, buff);
+                sprintf(buff, "%s_%08d.jpg", prefix, count);
+				cvSaveImage(buff, show_img, 0);
+                //save_image(disp, buff);
             }
 
+			// if you run it with param -http_port 8090  then open URL in your web-browser: http://localhost:8090
+			if (http_stream_port > 0 && show_img) {
+				//int port = 8090;
+				int port = http_stream_port;
+				int timeout = 200;
+				int jpeg_quality = 30;	// 1 - 100
+				send_mjpeg(show_img, port, timeout, jpeg_quality);
+			}
+
+			// save video file
+			if (output_video_writer && show_img) {
+				cvWriteFrame(output_video_writer, show_img);
+				printf("\n cvWriteFrame \n");
+			}
+
+			cvReleaseImage(&show_img);
+
             pthread_join(fetch_thread, 0);
             pthread_join(detect_thread, 0);
 
+			if (flag_exit == 1) break;
+
             if(delay == 0){
-                free_image(disp);
-                disp  = det;
+				show_img = det_img;
             }
-            det   = in;
+			det_img = in_img;
             det_s = in_s;
         }else {
             fetch_in_thread(0);
-            det   = in;
+			det_img = in_img;
             det_s = in_s;
             detect_in_thread(0);
-            if(delay == 0) {
-                free_image(disp);
-                disp = det;
-            }
-            show_image(disp, "Demo");
-            cvWaitKey(1);
+
+			show_img = det_img;
+			if (!dont_show) {
+				show_image_cv_ipl(show_img, "Demo");
+				cvWaitKey(1);
+			}
+			cvReleaseImage(&show_img);
         }
         --delay;
         if(delay < 0){
@@ -210,9 +310,42 @@
             before = after;
         }
     }
+	printf("input video stream closed. \n");
+	if (output_video_writer) {
+		cvReleaseVideoWriter(&output_video_writer);
+		printf("output_video_writer closed. \n");
+	}
+
+	// free memory
+	cvReleaseImage(&show_img);
+	cvReleaseImage(&in_img);
+	free_image(in_s);
+
+	free(avg);
+	for (j = 0; j < FRAMES; ++j) free(predictions[j]);
+	for (j = 0; j < FRAMES; ++j) free_image(images[j]);
+
+	for (j = 0; j < l.w*l.h*l.n; ++j) free(probs[j]);
+	free(boxes);
+	free(probs);
+
+	free_ptrs(names, net.layers[net.n - 1].classes);
+
+	int i;
+	const int nsize = 8;
+	for (j = 0; j < nsize; ++j) {
+		for (i = 32; i < 127; ++i) {
+			free_image(alphabet[j][i]);
+		}
+		free(alphabet[j]);
+	}
+	free(alphabet);
+
+	free_network(net);
 }
 #else
-void demo(char *cfgfile, char *weightfile, float thresh, int cam_index, const char *filename, char **names, int classes, int frame_skip, char *prefix)
+void demo(char *cfgfile, char *weightfile, float thresh, float hier_thresh, int cam_index, const char *filename, char **names, int classes,
+	int frame_skip, char *prefix, char *out_filename, int http_stream_port, int dont_show, int ext_output)
 {
     fprintf(stderr, "Demo needs OpenCV for webcam images.\n");
 }

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