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#include <stdio.h>
#include <string.h>
#include <gphoto2/gphoto2-camera.h>
#include "samples.h"
static GPPortInfoList *portinfolist = NULL;
static CameraAbilitiesList *abilities = NULL;
/*
* This detects all currently attached cameras and returns
* them in a list. It avoids the generic usb: entry.
*
* This function does not open nor initialize the cameras yet.
*/
int
sample_autodetect (CameraList *list, GPContext *context) {
int ret, i;
CameraList *xlist = NULL;
ret = gp_list_new (&xlist);
if (ret < GP_OK) goto out;
if (!portinfolist) {
/* Load all the port drivers we have... */
ret = gp_port_info_list_new (&portinfolist);
if (ret < GP_OK) goto out;
ret = gp_port_info_list_load (portinfolist);
if (ret < 0) goto out;
ret = gp_port_info_list_count (portinfolist);
if (ret < 0) goto out;
}
/* Load all the camera drivers we have... */
ret = gp_abilities_list_new (&abilities);
if (ret < GP_OK) goto out;
ret = gp_abilities_list_load (abilities, context);
if (ret < GP_OK) goto out;
/* ... and autodetect the currently attached cameras. */
ret = gp_abilities_list_detect (abilities, portinfolist, xlist, context);
if (ret < GP_OK) goto out;
/* Filter out the "usb:" entry */
ret = gp_list_count (xlist);
if (ret < GP_OK) goto out;
for (i=0;i<ret;i++) {
const char *name, *value;
gp_list_get_name (xlist, i, &name);
gp_list_get_value (xlist, i, &value);
if (!strcmp ("usb:",value)) continue;
gp_list_append (list, name, value);
}
out:
gp_list_free (xlist);
return gp_list_count(list);
}
/*
* This function opens a camera depending on the specified model and port.
*/
int
sample_open_camera (Camera ** camera, const char *model, const char *port) {
int ret, m, p;
CameraAbilities a;
GPPortInfo pi;
ret = gp_camera_new (camera);
if (ret < GP_OK) return ret;
/* First lookup the model / driver */
m = gp_abilities_list_lookup_model (abilities, model);
if (m < GP_OK) return ret;
ret = gp_abilities_list_get_abilities (abilities, m, &a);
if (ret < GP_OK) return ret;
ret = gp_camera_set_abilities (*camera, a);
if (ret < GP_OK) return ret;
/* Then associate the camera with the specified port */
p = gp_port_info_list_lookup_path (portinfolist, port);
if (ret < GP_OK) return ret;
switch (p) {
case GP_ERROR_UNKNOWN_PORT:
fprintf (stderr, "The port you specified "
"('%s') can not be found. Please "
"specify one of the ports found by "
"'gphoto2 --list-ports' and make "
"sure the spelling is correct "
"(i.e. with prefix 'serial:' or 'usb:').",
port);
break;
default:
break;
}
if (ret < GP_OK) return ret;
ret = gp_port_info_list_get_info (portinfolist, p, &pi);
if (ret < GP_OK) return ret;
ret = gp_camera_set_port_info (*camera, pi);
if (ret < GP_OK) return ret;
return GP_OK;
}
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