challenge-bot.com Git - ozzloy@gmail.com/oble/blob - oble.cpp

   1 //use the camera to aid the decision to sleep.
   2 //Copyright 2009 Daniel Watson
   3 /*
   4     use a camera to prevent screensaver
   5     Copyright (C) 2009  daniel watson, ozzloy@gmail.com
   6
   7     This program is free software: you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published by
   9     the Free Software Foundation, either version 3 of the License, or
  10     (at your option) any later version.
  11
  12     This program is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15     GNU General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20 /*
  21          This file is part of oble.
  22
  23          oble is free software: you can redistribute it and/or modify
  24          it under the terms of the GNU General Public License as published by
  25          the Free Software Foundation, either version 3 of the License, or
  26          (at your option) any later version.
  27
  28          oble is distributed in the hope that it will be useful,
  29          but WITHOUT ANY WARRANTY; without even the implied warranty of
  30          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  31          GNU General Public License for more details.
  32
  33          You should have received a copy of the GNU General Public License
  34          along with oble.  If not, see <http://www.gnu.org/licenses/>.
  35
  36 */
  37 #include <cv.h>
  38 #include <highgui.h>
  39 #include <stdio.h>
  40 #include <iostream>
  41 #include <time.h>
  42 #include <unistd.h>
  43 #include "oble.h"
  44 #include "idle_x11.h"
  45
  46 using namespace std;
  47
  48 static string cascade_filename = "";
  49 static int verbose = 0;
  50
  51 // argument for cvFlip(src, dest, FLIP_TYPE)
  52 #define MIRROR 1
  53
  54 CvHaarClassifierCascade* load_object_detector(const char* cascade_path)
  55 {
  56         return (CvHaarClassifierCascade*)cvLoad(cascade_path);
  57 }
  58
  59 void detect_and_draw_objects(IplImage* image,
  60                 CvHaarClassifierCascade* cascade,
  61                 int do_pyramids)
  62 {
  63         IplImage* small_image = image;
  64         CvMemStorage* storage = cvCreateMemStorage(0);
  65         CvSeq* faces;
  66         int i, scale = 1;
  67         static int saw_last_time = 0;
  68
  69         /* if the flag is specified, down-scale the input image to get a
  70                  performance boost w/o loosing quality (perhaps) */
  71         if(do_pyramids)
  72         {
  73                 small_image = cvCreateImage(cvSize(image->width/2,image->height/2),
  74                                 IPL_DEPTH_8U, 3);
  75                 cvPyrDown(image, small_image, CV_GAUSSIAN_5x5);
  76                 scale = 2;
  77         }
  78
  79         /* use the fastest variant */
  80         faces = cvHaarDetectObjects(small_image, cascade, storage, 1.2, 2,
  81                         CV_HAAR_DO_CANNY_PRUNING);
  82
  83         if(0 < faces->total)
  84         {
  85                 t_current = time(NULL);
  86                 if(verbose)
  87                 {
  88                         printf(":) face \n");
  89                 }
  90                 if(saw_last_time)
  91                 {
  92                         if(verbose)printf("\t\tpoking\n");
  93                         reset_idle_time();
  94                         system("gnome-screensaver-command --poke");
  95                 }
  96                 saw_last_time = 1;
  97         }
  98         else
  99         {
 100                 saw_last_time = 0;
 101                 if(verbose)
 102                 {
 103                         printf(":( no face \n");
 104                 }
 105         }
 106
 107         /* draw all the rectangles */
 108         for(i = 0; i < faces->total; i++)
 109         {
 110                 /* extract the rectangles only */
 111                 CvRect face = *(CvRect*)cvGetSeqElem(faces, i);
 112                 CvPoint upperLeft = cvPoint(face.x * scale, face.y * scale);
 113                 CvPoint bottomRight = cvPoint((face.x + face.width) * scale,
 114                                 (face.y + face.height) * scale);
 115                 cvRectangle(image, upperLeft, bottomRight, CV_RGB(255,0,0), 3);
 116         }
 117
 118         if(small_image != image)
 119                 cvReleaseImage(&small_image);
 120         cvReleaseMemStorage(&storage);
 121 }
 122
 123 void screensave(time_t t_current)
 124 {
 125         static int last_elapse = 0;
 126         static int activated = 0;
 127         int elapse = difftime(time(NULL), t_current);
 128         int timeout = 10;
 129         if(elapse > timeout && elapse != last_elapse)
 130         {
 131                 last_elapse = elapse;
 132                 if(verbose)
 133                 {
 134                         printf("elapse = %d\n", elapse);
 135                 }
 136                 if(!activated)
 137                 {
 138                         printf("activated\n");
 139                         activated = 1;
 140                         system("gnome-screensaver-command -a");
 141                 }
 142         }
 143         if(elapse < timeout && activated)
 144         {
 145                 printf("deactivated\n");
 146                 activated = 0;
 147                 system("gnome-screensaver-command -d");
 148         }
 149 }
 150
 151 int parse_opts(int argc, char **argv)
 152 {
 153         int index, c;
 154         opterr = 0;
 155         const char *options = "vc:\x0";
 156         while((c = getopt(argc, argv, options)) != -1)
 157         {
 158                 switch(c)
 159                 {
 160                         case 'v': verbose = 1; break;
 161                         case 'c': cascade_filename = string(optarg); break;
 162                         case '?':
 163                                 if(optopt == 'c')
 164                                 {
 165                                         printf("option -%c requires an argument.\n", optopt);
 166                                 }
 167                                 else if(isprint (optopt))
 168                                 {
 169                                         printf("unknown option `-%c'.\n", optopt);
 170                                 }
 171                                 else
 172                                 {
 173                                         printf("unknown option char `\\x%x'.\n", optopt);
 174                                 }
 175                                 break;
 176                         case '\x0': break; //ignore.  not sure why this shows up.  maybe zsh?
 177                         default: abort();
 178                 }
 179         }
 180
 181         for(index = optind; index < argc; index++)
 182                 printf("Non-option arg %s\n", argv[index]);
 183
 184         if(cascade_filename == "")
 185         {
 186                 printf("you must supply a filename with -c option.  example:\n");
 187                 printf(
 188                                 "%s -c %s\n",
 189                                 argv[0],
 190                                 "/usr/share/opencv/haarcascades/haarcascade_frontalface_alt.xml"
 191                                 );
 192                 return 1;
 193         }
 194         if(verbose) printf("SILENT ALARM ACTIVATED!!!\n");
 195         return 0;
 196 }
 197
 198 // A Simple Camera Capture Framework.
 199 int main(int argc, char** argv)
 200 {
 201         if(parse_opts(argc, argv)) return 0;
 202
 203         CvHaarClassifierCascade* cascade =
 204                 load_object_detector(cascade_filename.c_str());
 205
 206         CvCapture* capture = cvCaptureFromCAM(CV_CAP_ANY);
 207         if(!capture) {
 208                 cerr << "ERROR: capture is NULL " << endl;
 209                 getchar();
 210                 return -1;
 211         }
 212
 213         // Create a window in which the captured images will be presented
 214         cvNamedWindow("mywindow", CV_WINDOW_AUTOSIZE);
 215
 216         IplImage* frame = cvQueryFrame(capture);
 217         if(!frame) {
 218                 cerr << "ERROR: frame is null..." << endl;
 219                 getchar();
 220                 return -1;
 221         }
 222         IplImage* mirrored =
 223                 cvCreateImage(cvGetSize(frame), frame->depth, frame->nChannels);
 224         t_current = time(NULL);
 225         // Show the image captured from the camera in the window and repeat
 226         while(1) {
 227                 // Get one frame
 228                 frame = cvQueryFrame(capture);
 229                 if(!frame) {
 230                         cerr << "ERROR: frame is null..." << endl;
 231                         getchar();
 232                         break;
 233                 }
 234
 235                 //flip the image so displayed right/left corresponds to physical right/left
 236                 cvFlip(frame, mirrored, MIRROR);
 237
 238                 detect_and_draw_objects(mirrored, cascade, 1);
 239                 cvShowImage("mywindow", mirrored);
 240                 // Do not release the frame!
 241                 //screensave(t_current);
 242
 243                 //If ESC key pressed, Key=0x10001B under OpenCV 0.9.7(linux version),
 244                 //remove higher bits using AND operator
 245                 if((cvWaitKey(100) & 255) == 27) break;
 246         }
 247
 248         // Release the capture device housekeeping
 249         cvReleaseCapture(&capture);
 250         cvDestroyWindow("mywindow");
 251         cvReleaseImage(&mirrored);
 252         return 0;
 253 }