1 /* compile with gcc -Wall -o canon-capture -lgphoto2 canon-capture.c
2 * This code released into the public domain 21 July 2008
3 *
4 * This program does the equivalent of:
5 * gphoto2 --shell
6 * > set-config capture=1
7 * > capture-image-and-download
8 * compile with gcc -Wall -o canon-capture -lgphoto2 canon-capture.c
9 *
10 * Taken from: http://credentiality2.blogspot.com/2008/07/linux-libgphoto2-image-capture-from.html
11 */
12
13 #include <stdlib.h>
14 #include <sys/types.h>
15 #include <sys/stat.h>
16 #include <sys/time.h>
17 #include <fcntl.h>
18 #include <stdio.h>
19 #include <stdarg.h>
20 #include <string.h>
21 #include <gphoto2/gphoto2.h>
22
23 #include "samples.h"
24
errordumper(GPLogLevel level,const char * domain,const char * str,void * data)25 static void errordumper(GPLogLevel level, const char *domain, const char *str,
26 void *data) {
27 struct timeval tv;
28
29 gettimeofday (&tv, NULL);
30 fprintf(stdout, "%d.%d: %s\n", (int)tv.tv_sec, (int)tv.tv_usec, str);
31 }
32
33 /* This seems to have no effect on where images go
34 void set_capturetarget(Camera *canon, GPContext *canoncontext) {
35 int retval;
36 printf("Get root config.\n");
37 CameraWidget *rootconfig; // okay, not really
38 CameraWidget *actualrootconfig;
39
40 retval = gp_camera_get_config(canon, &rootconfig, canoncontext);
41 actualrootconfig = rootconfig;
42 printf(" Retval: %d\n", retval);
43
44 printf("Get main config.\n");
45 CameraWidget *child;
46 retval = gp_widget_get_child_by_name(rootconfig, "main", &child);
47 printf(" Retval: %d\n", retval);
48
49 printf("Get settings config.\n");
50 rootconfig = child;
51 retval = gp_widget_get_child_by_name(rootconfig, "settings", &child);
52 printf(" Retval: %d\n", retval);
53
54 printf("Get capturetarget.\n");
55 rootconfig = child;
56 retval = gp_widget_get_child_by_name(rootconfig, "capturetarget", &child);
57 printf(" Retval: %d\n", retval);
58
59
60 CameraWidget *capture = child;
61
62 const char *widgetinfo;
63 gp_widget_get_name(capture, &widgetinfo);
64 printf("config name: %s\n", widgetinfo );
65
66 const char *widgetlabel;
67 gp_widget_get_label(capture, &widgetlabel);
68 printf("config label: %s\n", widgetlabel);
69
70 int widgetid;
71 gp_widget_get_id(capture, &widgetid);
72 printf("config id: %d\n", widgetid);
73
74 CameraWidgetType widgettype;
75 gp_widget_get_type(capture, &widgettype);
76 printf("config type: %d == %d \n", widgettype, GP_WIDGET_RADIO);
77
78
79 printf("Set value.\n");
80
81 // capture to ram should be 0, although I think the filename also plays into
82 // it
83 int one=1;
84 retval = gp_widget_set_value(capture, &one);
85 printf(" Retval: %d\n", retval);
86
87 printf("Enabling capture to CF.\n");
88 retval = gp_camera_set_config(canon, actualrootconfig, canoncontext);
89 printf(" Retval: %d\n", retval);
90 }
91 */
92
93 static void
capture_to_file(Camera * canon,GPContext * canoncontext,char * fn)94 capture_to_file(Camera *canon, GPContext *canoncontext, char *fn) {
95 int fd, retval;
96 CameraFile *canonfile;
97 CameraFilePath camera_file_path;
98
99 printf("Capturing.\n");
100
101 /* NOP: This gets overridden in the library to /capt0000.jpg */
102 strcpy(camera_file_path.folder, "/");
103 strcpy(camera_file_path.name, "foo.jpg");
104
105 retval = gp_camera_capture(canon, GP_CAPTURE_IMAGE, &camera_file_path, canoncontext);
106 printf(" Retval: %d\n", retval);
107
108 printf("Pathname on the camera: %s/%s\n", camera_file_path.folder, camera_file_path.name);
109
110 fd = open(fn, O_CREAT | O_WRONLY | O_BINARY, 0644);
111 retval = gp_file_new_from_fd(&canonfile, fd);
112 printf(" Retval: %d\n", retval);
113 retval = gp_camera_file_get(canon, camera_file_path.folder, camera_file_path.name,
114 GP_FILE_TYPE_NORMAL, canonfile, canoncontext);
115 printf(" Retval: %d\n", retval);
116
117 printf("Deleting.\n");
118 retval = gp_camera_file_delete(canon, camera_file_path.folder, camera_file_path.name,
119 canoncontext);
120 printf(" Retval: %d\n", retval);
121
122 gp_file_free(canonfile);
123 }
124
125 int
main(int argc,char ** argv)126 main(int argc, char **argv) {
127 Camera *canon;
128 int retval;
129 GPContext *canoncontext = sample_create_context();
130
131 gp_log_add_func(GP_LOG_DEBUG, errordumper, NULL);
132 gp_camera_new(&canon);
133
134 /* When I set GP_LOG_DEBUG instead of GP_LOG_ERROR above, I noticed that the
135 * init function seems to traverse the entire filesystem on the camera. This
136 * is partly why it takes so long.
137 * (Marcus: the ptp2 driver does this by default currently.)
138 */
139 printf("Camera init. Takes about 10 seconds.\n");
140 retval = gp_camera_init(canon, canoncontext);
141 if (retval != GP_OK) {
142 printf(" Retval: %d\n", retval);
143 exit (1);
144 }
145 canon_enable_capture(canon, TRUE, canoncontext);
146 /*set_capturetarget(canon, canoncontext);*/
147 capture_to_file(canon, canoncontext, "foo.jpg");
148 capture_to_file(canon, canoncontext, "foo1.jpg");
149 capture_to_file(canon, canoncontext, "foo2.jpg");
150 capture_to_file(canon, canoncontext, "foo3.jpg");
151 capture_to_file(canon, canoncontext, "foo4.jpg");
152 capture_to_file(canon, canoncontext, "foo5.jpg");
153 capture_to_file(canon, canoncontext, "foo6.jpg");
154 gp_camera_exit(canon, canoncontext);
155 return 0;
156 }
157