a92408ab |
1 | //use the camera to aid the decision to sleep. |
2 | //Copyright 2009 Daniel Watson |
ccb0e7df |
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 | */ |
a92408ab |
20 | /* |
4d640880 |
21 | This file is part of oble. |
a92408ab |
22 | |
4d640880 |
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. |
a92408ab |
27 | |
4d640880 |
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. |
a92408ab |
32 | |
4d640880 |
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/>. |
a92408ab |
35 | |
4d640880 |
36 | */ |
b7e484d5 |
37 | #include <cv.h> |
38 | #include <highgui.h> |
39 | #include <stdio.h> |
4d640880 |
40 | #include <iostream> |
e0c48375 |
41 | #include <time.h> |
5a96bc78 |
42 | #include <unistd.h> |
124727d2 |
43 | #include "oble.h" |
4f219a9f |
44 | #include "idle_x11.h" |
b8b01547 |
45 | |
e0c48375 |
46 | using namespace std; |
b7e484d5 |
47 | |
5a96bc78 |
48 | static string cascade_filename = ""; |
2b11aff4 |
49 | static int verbose = 0; |
5a96bc78 |
50 | |
0d6b136c |
51 | // argument for cvFlip(src, dest, FLIP_TYPE) |
4d640880 |
52 | #define MIRROR 1 |
0d6b136c |
53 | |
64fb0216 |
54 | CvHaarClassifierCascade* load_object_detector(const char* cascade_path) |
b7e484d5 |
55 | { |
21323a92 |
56 | return (CvHaarClassifierCascade*)cvLoad(cascade_path); |
b7e484d5 |
57 | } |
58 | |
9cd4e78c |
59 | void detect_and_draw_objects(IplImage* image, |
b7e484d5 |
60 | CvHaarClassifierCascade* cascade, |
9cd4e78c |
61 | int do_pyramids) |
b7e484d5 |
62 | { |
63 | IplImage* small_image = image; |
64 | CvMemStorage* storage = cvCreateMemStorage(0); |
65 | CvSeq* faces; |
66 | int i, scale = 1; |
67 | |
68 | /* if the flag is specified, down-scale the input image to get a |
69 | performance boost w/o loosing quality (perhaps) */ |
21323a92 |
70 | if(do_pyramids) |
b7e484d5 |
71 | { |
21323a92 |
72 | small_image = cvCreateImage(cvSize(image->width/2,image->height/2), |
73 | IPL_DEPTH_8U, 3); |
74 | cvPyrDown(image, small_image, CV_GAUSSIAN_5x5); |
b7e484d5 |
75 | scale = 2; |
76 | } |
77 | |
78 | /* use the fastest variant */ |
21323a92 |
79 | faces = cvHaarDetectObjects(small_image, cascade, storage, 1.2, 2, |
80 | CV_HAAR_DO_CANNY_PRUNING); |
b7e484d5 |
81 | |
12af27da |
82 | update_idle(faces->total); |
83 | |
84 | /* draw all the rectangles */ |
85 | for(i = 0; i < faces->total; i++) |
86 | { |
87 | /* extract the rectangles only */ |
88 | CvRect face = *(CvRect*)cvGetSeqElem(faces, i); |
89 | CvPoint upperLeft = cvPoint(face.x * scale, face.y * scale); |
90 | CvPoint bottomRight = cvPoint((face.x + face.width) * scale, |
91 | (face.y + face.height) * scale); |
92 | cvRectangle(image, upperLeft, bottomRight, CV_RGB(255,0,0), 3); |
93 | } |
94 | |
95 | if(small_image != image) |
96 | cvReleaseImage(&small_image); |
97 | cvReleaseMemStorage(&storage); |
98 | } |
99 | |
100 | void update_idle(int faces_total) |
101 | { |
102 | static int saw_last_time = 0; |
103 | |
104 | if(0 < faces_total) |
b8b01547 |
105 | { |
e0c48375 |
106 | t_current = time(NULL); |
2b11aff4 |
107 | if(verbose) |
4f219a9f |
108 | { |
109 | printf(":) face \n"); |
110 | } |
111 | if(saw_last_time) |
112 | { |
2b11aff4 |
113 | if(verbose)printf("\t\tpoking\n"); |
4f219a9f |
114 | reset_idle_time(); |
115 | system("gnome-screensaver-command --poke"); |
116 | } |
117 | saw_last_time = 1; |
118 | } |
119 | else |
120 | { |
121 | saw_last_time = 0; |
2b11aff4 |
122 | if(verbose) |
4f219a9f |
123 | { |
124 | printf(":( no face \n"); |
125 | } |
b8b01547 |
126 | } |
b8b01547 |
127 | |
b7e484d5 |
128 | } |
129 | |
e0c48375 |
130 | void screensave(time_t t_current) |
b7e484d5 |
131 | { |
e0c48375 |
132 | static int last_elapse = 0; |
133 | static int activated = 0; |
134 | int elapse = difftime(time(NULL), t_current); |
135 | int timeout = 10; |
136 | if(elapse > timeout && elapse != last_elapse) |
b8b01547 |
137 | { |
e0c48375 |
138 | last_elapse = elapse; |
2b11aff4 |
139 | if(verbose) |
4f219a9f |
140 | { |
141 | printf("elapse = %d\n", elapse); |
142 | } |
e0c48375 |
143 | if(!activated) |
144 | { |
145 | printf("activated\n"); |
146 | activated = 1; |
147 | system("gnome-screensaver-command -a"); |
148 | } |
149 | } |
150 | if(elapse < timeout && activated) |
151 | { |
152 | printf("deactivated\n"); |
153 | activated = 0; |
154 | system("gnome-screensaver-command -d"); |
155 | } |
156 | } |
b8b01547 |
157 | |
5a96bc78 |
158 | int parse_opts(int argc, char **argv) |
159 | { |
160 | int index, c; |
5a96bc78 |
161 | opterr = 0; |
255d7b0e |
162 | const char *options = "vc:\x0"; |
5a96bc78 |
163 | while((c = getopt(argc, argv, options)) != -1) |
2b11aff4 |
164 | { |
5a96bc78 |
165 | switch(c) |
166 | { |
2b11aff4 |
167 | case 'v': verbose = 1; break; |
168 | case 'c': cascade_filename = string(optarg); break; |
5a96bc78 |
169 | case '?': |
170 | if(optopt == 'c') |
2b11aff4 |
171 | { |
5a96bc78 |
172 | printf("option -%c requires an argument.\n", optopt); |
2b11aff4 |
173 | } |
5a96bc78 |
174 | else if(isprint (optopt)) |
2b11aff4 |
175 | { |
5a96bc78 |
176 | printf("unknown option `-%c'.\n", optopt); |
2b11aff4 |
177 | } |
5a96bc78 |
178 | else |
2b11aff4 |
179 | { |
5a96bc78 |
180 | printf("unknown option char `\\x%x'.\n", optopt); |
2b11aff4 |
181 | } |
182 | break; |
255d7b0e |
183 | case '\x0': break; //ignore. not sure why this shows up. maybe zsh? |
2b11aff4 |
184 | default: abort(); |
5a96bc78 |
185 | } |
2b11aff4 |
186 | } |
5a96bc78 |
187 | |
188 | for(index = optind; index < argc; index++) |
189 | printf("Non-option arg %s\n", argv[index]); |
190 | |
2b11aff4 |
191 | if(cascade_filename == "") |
192 | { |
193 | printf("you must supply a filename with -c option. example:\n"); |
194 | printf( |
195 | "%s -c %s\n", |
196 | argv[0], |
197 | "/usr/share/opencv/haarcascades/haarcascade_frontalface_alt.xml" |
198 | ); |
199 | return 1; |
200 | } |
201 | if(verbose) printf("SILENT ALARM ACTIVATED!!!\n"); |
5a96bc78 |
202 | return 0; |
203 | } |
204 | |
12af27da |
205 | void get_frames(CvCapture* capture, CvHaarClassifierCascade* cascade) |
e0c48375 |
206 | { |
12af27da |
207 | IplImage* frame = NULL; |
208 | get_one_frame(capture, frame); |
b7e484d5 |
209 | |
b8b01547 |
210 | IplImage* mirrored = |
0d6b136c |
211 | cvCreateImage(cvGetSize(frame), frame->depth, frame->nChannels); |
b7e484d5 |
212 | // Show the image captured from the camera in the window and repeat |
21323a92 |
213 | while(1) { |
12af27da |
214 | if(get_one_frame(capture, frame)) break; |
b7e484d5 |
215 | |
21323a92 |
216 | //flip the image so displayed right/left corresponds to physical right/left |
4d640880 |
217 | cvFlip(frame, mirrored, MIRROR); |
64fb0216 |
218 | |
b8b01547 |
219 | detect_and_draw_objects(mirrored, cascade, 1); |
220 | cvShowImage("mywindow", mirrored); |
b7e484d5 |
221 | // Do not release the frame! |
4f219a9f |
222 | //screensave(t_current); |
b7e484d5 |
223 | |
224 | //If ESC key pressed, Key=0x10001B under OpenCV 0.9.7(linux version), |
225 | //remove higher bits using AND operator |
e0c48375 |
226 | if((cvWaitKey(100) & 255) == 27) break; |
b7e484d5 |
227 | } |
12af27da |
228 | cvReleaseImage(&mirrored); |
229 | } |
230 | |
231 | int do_capture() |
232 | { |
233 | CvHaarClassifierCascade* cascade = |
234 | load_object_detector(cascade_filename.c_str()); |
235 | |
236 | CvCapture* capture = cvCaptureFromCAM(CV_CAP_ANY); |
237 | if(!capture) { |
238 | cerr << "ERROR: capture is NULL " << endl; |
239 | getchar(); |
240 | return -1; |
241 | } |
242 | |
243 | // Create a window in which the captured images will be presented |
244 | cvNamedWindow("mywindow", CV_WINDOW_AUTOSIZE); |
245 | t_current = time(NULL); |
246 | get_frames(capture, cascade); |
b7e484d5 |
247 | |
248 | // Release the capture device housekeeping |
21323a92 |
249 | cvReleaseCapture(&capture); |
250 | cvDestroyWindow("mywindow"); |
b7e484d5 |
251 | return 0; |
252 | } |
12af27da |
253 | |
254 | int get_one_frame(CvCapture* capture, IplImage* &frame) |
255 | { |
256 | frame = cvQueryFrame(capture); |
257 | if(!frame) { |
258 | cerr << "ERROR: frame is null..." << endl; |
259 | getchar(); |
260 | return 1; |
261 | } |
262 | return 0; |
263 | } |
264 | |
265 | // A Simple Camera Capture Framework. |
266 | int main(int argc, char** argv) |
267 | { |
268 | if(parse_opts(argc, argv)) return 0; |
269 | |
270 | return do_capture(); |
271 | } |