# Copyright 2008 Alessio Sangalli
# This code is GNU GPL


#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <gphoto2/gphoto2-camera.h>

int d = 0;

int main()
{
	GPContext* context;
	CameraAbilitiesList* al;
	GPPortInfoList* il;
	CameraList* list;
	const char* model;
	const char* port;
	int i, c;
	int res;
	Camera** cameras;
	char** camera_names;
	
	// Auto-detection of cameras
	context = gp_context_new();
	gp_abilities_list_new(&al);
	gp_abilities_list_load(al, context);
	gp_port_info_list_new(&il);
	gp_port_info_list_load(il);
	gp_list_new(&list);
	gp_abilities_list_detect(al, il, list, context);
	
	// Now we have the list of connected cameras; let's prepare the structures
	c=gp_list_count(list)-1;
	cameras = malloc(sizeof(Camera*)*c);
	camera_names = malloc(sizeof(char*)*c);
	printf("Number of cameras: %d\n", c);
	// We skip the first "generic" one
	for(i=1; i<=c; i++)
	{
		int m, p;
		GPPortInfo info;
		CameraAbilities a;
		
		// We get info on the abilities of this camera...
		gp_list_get_name(list, i, &model);
		m = gp_abilities_list_lookup_model(al, model);
		gp_abilities_list_get_abilities(al, m, &a);
		
		// We get info about the port...
		gp_list_get_value(list, i, &port);
		p = gp_port_info_list_lookup_path(il, port);
		gp_port_info_list_get_info(il, p, &info);
		
		// We allocate and set the camera.
		printf("Detected camera #%d: name='%s' port='%s'\n", i-1, model, port);
		gp_camera_new(&cameras[i-1]);
		gp_camera_set_abilities(cameras[i-1], a);
		gp_camera_set_port_info(cameras[i-1], info);
	}
	
	// Cleanup
	gp_list_unref(list);
	gp_port_info_list_free(il);
	gp_abilities_list_free(al);
	
	// We now initialize the communication with cameras
	for(i=0; i<c; i++)
	{
		gp_camera_init(cameras[i], context);
		printf("Initializing communication with camera #%d\n", i);
	}
	
	// We now get and set some configuration data
	for(i=0; i<c; i++)
	{
		CameraWidget* widget_root;
		CameraWidget* widget_main;
		CameraWidget* widget_settings;
		CameraWidget* widget_imgsettings;
		CameraWidget* widget_capturesettings;
		CameraWidget* widget_value;
		int value_int;
		float value_float;
		
		// General
		res = gp_camera_get_config(cameras[i], &widget_root, context);
		if(res!=GP_OK) {printf("01 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		res = gp_widget_get_child_by_name(widget_root, "main", &widget_main);
		if(res!=GP_OK) {printf("02 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		res = gp_widget_get_child_by_name(widget_main, "settings", &widget_settings);
		if(res!=GP_OK) {printf("03 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		
		// Owner
		res = gp_widget_get_child_by_name(widget_settings, "owner", &widget_value);
		if(res!=GP_OK) {printf("04 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		//res = gp_widget_get_value(widget_value, camera_names[i]);
		if(res!=GP_OK) {printf("05 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		//printf("Camera #%d - value='%s'\n", i, camera_names[i]);
		
		// We enable capture
		res = gp_widget_get_child_by_name(widget_settings, "capture", &widget_value);
		if(res!=GP_OK) {printf("06 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		value_int = 1;
		res = gp_widget_set_value(widget_value, &value_int);
		if(res!=GP_OK) {printf("07 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		
		// We commit the config
		res = gp_camera_set_config(cameras[i], widget_root, context);
		if(res!=GP_OK) {printf("07.5 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		
		// We look for more settings
		res = gp_widget_get_child_by_name(widget_main, "imgsettings", &widget_imgsettings);
		if(res!=GP_OK) {printf("08 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		res = gp_widget_get_child_by_name(widget_main, "capturesettings", &widget_capturesettings);
		if(res!=GP_OK) {printf("09 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		
		// And we set image quality, size, zoom.
		res = gp_widget_get_child_by_name(widget_imgsettings, "imgquality", &widget_value);
		if(res!=GP_OK) {printf("10 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		value_int = 0;
		res = gp_widget_set_value(widget_value, &value_int);
		if(res!=GP_OK) {printf("11 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		
		res = gp_widget_get_child_by_name(widget_imgsettings, "imgsize", &widget_value);
		if(res!=GP_OK) {printf("12 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		value_int = 3;
		res = gp_widget_set_value(widget_value, &value_int);
		if(res!=GP_OK) {printf("13 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		
		res = gp_widget_get_child_by_name(widget_capturesettings, "zoom", &widget_value);
		if(res!=GP_OK) {printf("14 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		value_float = 14.0;
		res = gp_widget_set_value(widget_value, &value_float);
		if(res!=GP_OK) {printf("15 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		
		// We commit the config
		res = gp_camera_set_config(cameras[i], widget_root, context);
		if(res!=GP_OK) {printf("16 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		
		gp_widget_unref(widget_root);
	}
	
	// Shall we finally capture some pics?
	for(i=0; i<c; i++)
	{
		CameraFilePath path;
		CameraFile* file;
		int fd;
		char output_file[1024];
		
		res = gp_camera_capture(cameras[i], GP_CAPTURE_IMAGE, &path, context);
		if(res!=GP_OK) {printf("17 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		//sprintf(output_file, "capt-%s-%d.jpg", camera_names[i], i);
		sprintf(output_file, "capt-%d.jpg", i);
		fd = open(output_file, O_CREAT|O_WRONLY);
		res = gp_file_new_from_fd(&file, fd);
		if(res!=GP_OK) {printf("18 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		res = gp_camera_file_get(cameras[i], path.folder, path.name, GP_FILE_TYPE_NORMAL, file, context);
		if(res!=GP_OK) {printf("19 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		res = gp_file_unref(file);
		if(res!=GP_OK) {printf("20 - Code: %d - %s\n", res, gp_result_as_string(res)); continue;}
		close(fd);
	}
	
	// Cleanup
	for(i=0; i<c; i++)
	{
		gp_camera_exit(cameras[i], context);
		gp_camera_unref(cameras[i]);
	}
	gp_context_unref(context);
	return 0;
}