/*
 * File Name : pixelsmart.h
 *
 * Header file included in the driver. Should not be used by the application
 * or any test program.
 * Work done for final project, Course: CIS5930
 * Course Name: Linux Kernel Programming & Device Driver Programming
 * Written by: Veena Adityan and Arthi Gokarn.
 * Submitted to: Dr. Baker
 * Date: 06/20/2003
 * Copyright 2003 
 */

#ifndef _PIXELSMART_H
#define _PIXELSMART_H

#ifndef __KERNEL__
#define __KERNEL__
#endif
#ifndef MODULE
#define MODULE
#endif

/*
*Uncomment if the printk statements used for debugging purpose are requrired
*/
//#define DEBUG

#include <linux/version.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/major.h>
#include <linux/slab.h>
#include <linux/poll.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <linux/types.h>
#include <linux/wrapper.h>
#include <linux/kmod.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#include <linux/videodev.h>
#include<linux/tqueue.h>
#include <asm/spinlock.h>
#include "sysdep.h"
#include "vidioctl.h"

/*
 * Card Specifics
 */
#define PIXELSMART_VENDOR_ID 0x0004
#define PIXELSMART_DEVICE_ID 0x0404
#define PIXELSMART_CONTROL_REG 0x2000
#define PIXELSMART_Y_LOW_REG 0x2002
#define PIXELSMART_Y_HIGH_REG 0x2003
#define PIXELSMART_POLARITY_CONTROL_REG 0x2004

/*
 * The various commands for freeze, live, etc.
 */
#define PIXELSMART_EXTRIGSTATUS_MASK 0x01
#define PIXELSMART_FIELD_MASK 0x01
#define PIXELSMART_LIVE_CMD 0x91
#define PIXELSMART_FREEZE_IMM_CMD 0x5B
#define PIXELSMART_FREEZE_NEXT_CMD 0x99

spinlock_t ps_lock;

/*  Streaming data buffer  */
struct stream_buffer
{
	struct v4l2_q_node	qnode;
	struct v4l2_buffer	vidbuf;
	int			requested;
	__u8			*vaddress;  /* vmalloc() */
	int			vma_refcount;
};	
/*
 * The maximum number of buffers that can be speicifed by the application
 * for streaming.
 */
#define MAX_CAPTURE_BUFFERS	5 // Can be increased to 30 if needed.

struct pixelsmart{
  int field;
  struct v4l2_device video_dev;	
  struct pci_dev*	dev;	/* ptr to PCI device		*/
  ulong		pixelsmart_adr;	/* bus address of IO memory	*/
  ulong		pixelsmart_mem;	/* kernel address of IO memory	*/
  ulong		pixelsmart_len;	/* kernel memory size	*/
   wait_queue_head_t queue; /*For blocking a read*/
   char *frame_buffer;
  int           buf_size;
  /* video card details*/
  uint  swidth;                 /* screen width                 */
  uint  sheight;        /* screen height                */
  /* State details */
  char*	fbuffer; /*framebuffers for mmap */
/* Client capture format and capture modes */
struct v4l2_pix_format  clientfmt;
struct v4l2_captureparm capture;
int input;
/* stream */
/*	Capture state	*/
	int			ready_to_capture;
	int			capture_completed;
	int			streaming;
	struct stream_buffer	stream_buf[MAX_CAPTURE_BUFFERS];
	int			stream_buffers_requested;
	int			stream_buffers_mapped;
	struct v4l2_queue	stream_q_capture;
	struct v4l2_queue	stream_q_done;
	int 	q_cap_count;
	int getmoreframes;
    int bypp; //bytes per pixel
    unsigned long capture_size;
};
#endif //_PIXELSMART_H