/***************************************************************************************
 *
 * video.h is part of SimpleSkyCam.
 *
 ***************************************************************************************/

#ifndef _VIDEO_H_
#define _VIDEO_H_

#include <string>
#include <list>

#include <linux/videodev2.h>


#include "gui.h"
#include "config.h"


enum {
	IOMODE_READ,
	IOMODE_MMAP,
	IOMODE_USERPTR
};


enum {
	VDEV_STATUS_UNKNOWN,
	VDEV_STATUS_OK,
	VDEV_STATUS_AGAIN,
	VDEV_STATUS_ERROR
};


// callback status
enum {
	VDEV_CBSTATUS_NOTHING = 1,
	VDEV_CBSTATUS_NEWFRAME,
	VDEV_CBSTATUS_ERROR
};


struct {
	unsigned int size;
	unsigned char* data;
} typedef VideoInBuffer;


struct {
	int w;
	int h;
	uint32_t format;
	uint32_t size;
	uint32_t maxsize;
	unsigned char *data;
} typedef VideoFrame;


#define VIDEOBUFFERS 3
class VideoDev {
private:
	std::string conf_device;
	std::string conf_devicename;
	gboolean (*callback)(gpointer data);
	int running;
	GMutex mutex;
	GThread *thread;

	VideoFrame vf[VIDEOBUFFERS];
	VideoInBuffer *inbuffers;
	unsigned int inbuffers_cnt;
	struct v4l2_cropcap cropcap;
	struct v4l2_crop crop;
	struct v4l2_format fmt;


	int vf_rec;
	int vf_get;
	int io;		// IO Mode
	int fd;

	int InitMMap();
	int InitUserPtr();
	int CaptureStart();
	int CaptureStop();
	int UnInit();

	int OpenInit ();
	int Close ();
	int Grab();
	int xioctl (int fd, int request, void *arg);
public:
	VideoDev();
	~VideoDev();

	void Thread();

	int Start(std::string dev, gboolean (*callback_func)(gpointer data));		// will start a new thread
	int Stop();		// stop video processing and stop the pthread

	int GetDeviceList(std::list<std::string> *list);
	int IsRunning() { return running; };

	VideoFrame *FrameGet();
	void FrameNext();
	void PrintCaps (uint32_t caps);
	void PrintFmt(struct v4l2_format *f);
};


extern VideoDev videodev;


#endif // _VIDEO_H_