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#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gphoto2/gphoto2.h>
#include <time.h>
#include <ncurses.h>
#define FOCUS_WIDGET_NAME "manualfocusdrive"
#define VIEWFINDER_WIDGET_NAME "viewfinder"
/**
gp_widget_set_value(CameraWidget*, const void) <-sets value
gp_widget_get_child_by_label(CameraWidget* widget, const char* label, CameraWidget ** child) <- child is widget
gp_camera_get_config(Camera* camera, CameraWidget **window, GpContext* context) <- window is parent
camera_init(Camera* camera, GPContext *context)
Create context:
context = gp_context_new();
gp_context_set_error_func (context, ctx_error_func, NULL);
gp_context_set_status_func (context, ctx_status_func, NULL);
Create camera:
gp_camera_new(&camera); <- point to return value
**/
void user_conf() {
printw("\nPress enter to continue.\n");
refresh();
getchar();
}
int set_widget_value(CameraWidget *widget, void *widget_value, const char *widget_name, Camera *camera, GPContext *context) {
int err;
if ((err = gp_widget_set_value(widget, widget_value)) != 0) {
printw("Error setting local widget value: %s\nThis is not the hardware\'s fault. Fix your code!\n", gp_result_as_string(err));
return(1);
}
if((err = gp_camera_set_single_config(camera, widget_name, widget, context)) != 0) {
printw("Error modifying camera widget: %s\n", gp_result_as_string(err));
return(2);
}
}
int main() {
char focus_state[8] = "None";
int user_focusing = 1;
int toggle = 1; //wish there was a better way to do this...
int key;
int err;
unsigned int focal_distance[3] = {0, 0, 0};
Camera *cam;
CameraWidget *widget_root;
CameraWidget *focus_widget;
CameraWidget *liveview_widget;
initscr();
cbreak();
noecho();
char *key_help_msg = "Press [q] [w] [e] to focus closer, [q] moving the fastest.\nPress [a] [s] [d] to focus further, [a] being the fastest.\nPress [Q] when done.\n";
GPContext *context = gp_context_new();
gp_camera_new(&cam);
//start up and connect to camera
printw("Initilizing camera...\n");
refresh();
if ((err = gp_camera_init(cam, context)) != 0) {
printw("Couldn't connect to camera: %s\n", gp_result_as_string(err));
refresh();
return(1);
}
//get configuration tree
gp_camera_get_config(cam, &widget_root, context);
//get child widgets
gp_widget_get_child_by_name(widget_root, FOCUS_WIDGET_NAME, &focus_widget);
gp_widget_get_child_by_name(widget_root, VIEWFINDER_WIDGET_NAME, &liveview_widget);
//set to liveview so we can ajust focus
set_widget_value(liveview_widget, &toggle, VIEWFINDER_WIDGET_NAME, cam, context);
printw("\nCamera now connected.\nOn the camera, manually focus all the way to the left. Turn on autofocus when done.\n");
user_conf();
/**
* Left: far
* Right: near
* Powerful: 3
* There's a lot of limitations, such as not knowing when we've hit the limit. We'll just have to depend on the user (me!) for that.
* We also don't know how much "Near/Far 3" is compared to "Near/Far 1".
*/
while(user_focusing) {
clear();
printw("%s", key_help_msg);
printw("Level 3:\t\t%i\nLevel 2:\t\t%i\nLevel 1:\t\t%i\n", focal_distance[2], focal_distance[1], focal_distance[0]);
refresh();
flushinp();
switch(getch()) {
case 'q':
focal_distance[2]++;
set_widget_value(focus_widget, "Near 3", FOCUS_WIDGET_NAME, cam, context);
usleep(500000);
break;
case 'w':
focal_distance[1]++;
set_widget_value(focus_widget, "Near 2", FOCUS_WIDGET_NAME, cam, context);
usleep(250000);
break;
case 'e':
focal_distance[0]++;
set_widget_value(focus_widget, "Near 1", FOCUS_WIDGET_NAME, cam, context);
usleep(125000);
break;
case 'a':
if(focal_distance[2] > 0) {
focal_distance[2]--;
set_widget_value(focus_widget, "Far 3", FOCUS_WIDGET_NAME, cam, context);
usleep(500000);
}
break;
case 's':
if(focal_distance[1] > 0) {
focal_distance[1]--;
set_widget_value(focus_widget, "Far 2", FOCUS_WIDGET_NAME, cam, context);
usleep(250000);
}
break;
case 'd':
if(focal_distance[0] > 0) {
focal_distance[0]--;
set_widget_value(focus_widget, "Far 1", FOCUS_WIDGET_NAME, cam, context);
usleep(125000);
}
break;
case 'Q':
user_focusing = 0;
break;
default:
break;
}
}
clear();
printw("Focal length saved, put on the filter now. You can turn off autofocus.\n");
user_conf();
clear();
printw("Manually focus all the way to left, then turn on autofocus.\n");
user_conf();
clear();
printw("Restoring focus...\n");
for(; focal_distance[2] >= 1; focal_distance[2]--) {
set_widget_value(focus_widget, "Near 3", FOCUS_WIDGET_NAME, cam, context);
usleep(500000);
}
for(; focal_distance[1] >= 1; focal_distance[1]--) {
set_widget_value(focus_widget, "Near 2", FOCUS_WIDGET_NAME, cam, context);
usleep(250000);
}
for(; focal_distance[0] >= 1; focal_distance[0]--) {
set_widget_value(focus_widget, "Near 1", FOCUS_WIDGET_NAME, cam, context);
usleep(125000);
}
printw("Done!\n");
user_conf();
endwin();
gp_camera_exit(cam, context);
return(0);
}
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