#ifndef VTX_H_INCLUDED
#define VTX_H_INCLUDED

/* $Id: vtx.h,v 1.6 1997/08/09 00:40:49 mb Exp mb $
 *
 * Copyright (c) 1994-97 Martin Buck  <martin-2.buck@student.uni-ulm.de>
 * Read COPYING for more information
 *
 */


typedef unsigned char byte_t;


/* videotext ioctls
 */
#define VTXIOCGETINFO  0x7101  /* get version of driver & capabilities of vtx-chipset */
#define VTXIOCCLRPAGE  0x7102  /* clear page-buffer */
#define VTXIOCCLRFOUND 0x7103  /* clear bits indicating that page was found */
#define VTXIOCPAGEREQ  0x7104  /* search for page */
#define VTXIOCGETSTAT  0x7105  /* get status of page-buffer */
#define VTXIOCGETPAGE  0x7106  /* get contents of page-buffer */
#define VTXIOCSTOPDAU  0x7107  /* stop data acquisition unit */
#define VTXIOCPUTPAGE  0x7108  /* display page on TV-screen */
#define VTXIOCSETDISP  0x7109  /* set TV-mode */
#define VTXIOCPUTSTAT  0x710a  /* set status of TV-output-buffer */
#define VTXIOCCLRCACHE 0x710b  /* clear cache on VTX-interface (if avail.) */
#define VTXIOCSETVIRT  0x710c  /* turn on virtual mode (this disables TV-display) */
#define VTXIOCGETQUAL  0x710d  /* get current video/videotext quality */


/* definitions for VTXIOCGETINFO
 */
#define SAA5243 0
#define SAA5246 1
#define SAA5249 2
#define SAA5248 3
#define XSTV5346 4

typedef struct {
  int version_major, version_minor;	/* version of driver; if version_major changes, driver */
					/* is not backward compatible!!! CHECK THIS!!! */  
  int numpages;				/* number of page-buffers of vtx-chipset */
  int cct_type;				/* type of vtx-chipset (SAA5243, SAA5246, SAA5248 or
  					 * SAA5249) */
} vtx_info_t;


/* definitions for VTXIOC{CLRPAGE,CLRFOUND,PAGEREQ,GETSTAT,GETPAGE,STOPDAU,PUTPAGE,SETDISP}
 */
#define MIN_UNIT   (1<<0)
#define MIN_TEN    (1<<1)
#define HR_UNIT    (1<<2)
#define HR_TEN     (1<<3)
#define PG_UNIT    (1<<4)
#define PG_TEN     (1<<5)
#define PG_HUND    (1<<6)
#define PGMASK_MAX (1<<7)
#define PGMASK_PAGE (PG_HUND | PG_TEN | PG_UNIT)
#define PGMASK_HOUR (HR_TEN | HR_UNIT)
#define PGMASK_MINUTE (MIN_TEN | MIN_UNIT)

typedef struct {
  int page;			/* number of requested page (hexadecimal) */
  int hour;			/* requested hour (hexadecimal) */
  int minute;			/* requested minute (hexadecimal) */
  int pagemask;			/* mask defining which values of the above are set */
  int pgbuf;			/* buffer where page will be stored */
  int start;			/* start of requested part of page */
  int end;			/* end of requested part of page */
  void* buffer;			/* pointer to beginning of destination buffer */
} vtx_pagereq_t;


/* definitions for VTXIOC{GETSTAT,PUTSTAT}
 */
#define VTX_PAGESIZE (40 * 24)
#define VTX_VIRTUALSIZE (40 * 49)

typedef struct {
  int pagenum;			/* number of page (hexadecimal) */
  int hour;			/* hour (hexadecimal) */
  int minute;			/* minute (hexadecimal) */
  int charset;			/* national charset */
  unsigned delete : 1;		/* delete page (C4) */
  unsigned headline : 1;	/* insert headline (C5) */
  unsigned subtitle : 1;	/* insert subtitle (C6) */
  unsigned supp_header : 1;	/* suppress header (C7) */
  unsigned update : 1;		/* update page (C8) */
  unsigned inter_seq : 1;	/* interrupted sequence (C9) */
  unsigned dis_disp : 1;	/* disable/suppress display (C10) */
  unsigned serial : 1;		/* serial mode (C11) */
  unsigned notfound : 1;	/* /FOUND */
  unsigned pblf : 1;		/* PBLF */
  unsigned hamming : 1;		/* hamming-error occured */
} vtx_pageinfo_t;


/* definitions for VTXIOCSETDISP
 */
typedef enum { DISPOFF, DISPNORM, DISPTRANS, DISPINS, INTERLACE_OFFSET } vtxdisp_t;


/* definitions for VTXIOCGETQUAL
 */
typedef struct {
  int video;
  int videotext;
} vtx_quality_t;


/* tuner ioctls
 */
#define TUNIOCGETINFO  0x7201  /* get version of driver & capabilities of tuner */
#define TUNIOCRESET    0x7202  /* reset tuner */
#define TUNIOCSETFREQ  0x7203  /* set tuning frequency (unit: kHz) */
#define TUNIOCGETFREQ  0x7204  /* get tuning frequency (unit: kHz) */
#define TUNIOCSETPROG  0x7205  /* set tuning program */
#define TUNIOCGETPROG  0x7206  /* get tuning program */


typedef struct {
  int version_major, version_minor;	/* version of driver; if version_major changes, driver */
					/* is not backward compatible!!! CHECK THIS!!! */  
  unsigned freq : 1;			/* tuner can be set to arbitrary frequency */
  unsigned prog : 1;			/* tuner stores several programs */
  unsigned scan : 1;			/* tuner supports scanning */
  unsigned autoscan : 1;		/* tuner supports scanning with automatic stop */
  unsigned afc : 1;			/* tuner supports AFC */
  unsigned dummy1, dummy2, dummy3, dummy4, dummy5, dummy6, dummy7, dummy8, dummy9, dummy10,
      dummy11 : 1;
  int dummy12, dummy13, dummy14, dummy15, dummy16, dummy17, dummy18, dummy19;
} tuner_info_t;


/* i2c ioctls
 */

#define I2CIOCWRITE 0x7300  /* write raw data to I²C-bus (needs RAW_I2C_SUPPORT) */
#define I2CIOCREAD  0x7301  /* read raw data from I²C-bus (needs RAW_I2C_SUPPORT) */


/* definitions for I2CIOC{WRITE,READ}
 */
typedef struct {
  int adr;
  int count;
  byte_t *buffer;
} i2c_raw_t;

#endif /* VTX_H_INCLUDED */