/***************************************************************************************
 *
 * videodev.cc is part of SimpleSkyCam.
 *
 *****************************************************************************************/

#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/videodev2.h>

#include <list>
#include <string>

#include "video.h"


VideoDev::VideoDev() {
	conf_device = "";
	conf_devicename = "";
	status = VDEV_STATUS_OK;
	callback = NULL;
};


VideoDev::~VideoDev() {
	Stop();
}


//
// return list of devices in form of /dev/videoYY [Name]
int VideoDev::GetDeviceList(std::list<std::string> *list) {
	std::string device;
	int devnum;

	if (list == NULL) return 0;

	list->clear();
	for (devnum = 0; devnum < 255; devnum++) {
		device = "/dev/video"+std::to_string(devnum);

		if (device.compare (conf_device) != 0) {
			int fd;
			struct v4l2_capability vcap;

			if((fd = open(device.c_str(), O_RDONLY)) == -1){
				continue;
			}

			if(ioctl(fd, VIDIOC_QUERYCAP, &vcap) == -1)
				strncpy ((char*)&vcap.card, "unknown", sizeof(vcap.card));
			close(fd);
			device += " [" + (std::string) ((char*)vcap.card) + "]";
		}
		else {
			device += " [" + (std::string) conf_devicename + "]";
		}

		list->push_back(device);
	}

	return 1;
}


int VideoDev::Start(std::string dev, gboolean (*callback_func)(gpointer data)) {
	return VDEV_STATUS_ERROR;
};


int VideoDev::Stop() {
	return VDEV_STATUS_OK;
}