126 строки
4.2 KiB
C
126 строки
4.2 KiB
C
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#ifndef _VTX_H
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#define _VTX_H
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/*
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* Teletext (=Videotext) hardware decoders using interface /dev/vtx
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* Do not confuse with drivers using /dev/vbi which decode videotext by software
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*
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* Videotext IOCTLs changed in order to use _IO() macros defined in <linux/ioctl.h>,
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* unused tuner IOCTLs cleaned up by
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* Michael Geng <linux@MichaelGeng.de>
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*
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* Copyright (c) 1994-97 Martin Buck <martin-2.buck@student.uni-ulm.de>
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* Read COPYING for more information
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*
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*/
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/*
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* Videotext ioctls
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*/
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#define VTXIOCGETINFO _IOR (0x81, 1, vtx_info_t)
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#define VTXIOCCLRPAGE _IOW (0x81, 2, vtx_pagereq_t)
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#define VTXIOCCLRFOUND _IOW (0x81, 3, vtx_pagereq_t)
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#define VTXIOCPAGEREQ _IOW (0x81, 4, vtx_pagereq_t)
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#define VTXIOCGETSTAT _IOW (0x81, 5, vtx_pagereq_t)
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#define VTXIOCGETPAGE _IOW (0x81, 6, vtx_pagereq_t)
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#define VTXIOCSTOPDAU _IOW (0x81, 7, vtx_pagereq_t)
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#define VTXIOCPUTPAGE _IO (0x81, 8)
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#define VTXIOCSETDISP _IO (0x81, 9)
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#define VTXIOCPUTSTAT _IO (0x81, 10)
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#define VTXIOCCLRCACHE _IO (0x81, 11)
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#define VTXIOCSETVIRT _IOW (0x81, 12, long)
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/* for compatibility, will go away some day */
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#define VTXIOCGETINFO_OLD 0x7101 /* get version of driver & capabilities of vtx-chipset */
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#define VTXIOCCLRPAGE_OLD 0x7102 /* clear page-buffer */
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#define VTXIOCCLRFOUND_OLD 0x7103 /* clear bits indicating that page was found */
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#define VTXIOCPAGEREQ_OLD 0x7104 /* search for page */
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#define VTXIOCGETSTAT_OLD 0x7105 /* get status of page-buffer */
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#define VTXIOCGETPAGE_OLD 0x7106 /* get contents of page-buffer */
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#define VTXIOCSTOPDAU_OLD 0x7107 /* stop data acquisition unit */
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#define VTXIOCPUTPAGE_OLD 0x7108 /* display page on TV-screen */
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#define VTXIOCSETDISP_OLD 0x7109 /* set TV-mode */
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#define VTXIOCPUTSTAT_OLD 0x710a /* set status of TV-output-buffer */
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#define VTXIOCCLRCACHE_OLD 0x710b /* clear cache on VTX-interface (if avail.) */
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#define VTXIOCSETVIRT_OLD 0x710c /* turn on virtual mode (this disables TV-display) */
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/*
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* Definitions for VTXIOCGETINFO
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*/
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#define SAA5243 0
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#define SAA5246 1
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#define SAA5249 2
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#define SAA5248 3
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#define XSTV5346 4
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typedef struct {
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int version_major, version_minor; /* version of driver; if version_major changes, driver */
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/* is not backward compatible!!! CHECK THIS!!! */
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int numpages; /* number of page-buffers of vtx-chipset */
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int cct_type; /* type of vtx-chipset (SAA5243, SAA5246, SAA5248 or
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* SAA5249) */
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}
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vtx_info_t;
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/*
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* Definitions for VTXIOC{CLRPAGE,CLRFOUND,PAGEREQ,GETSTAT,GETPAGE,STOPDAU,PUTPAGE,SETDISP}
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*/
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#define MIN_UNIT (1<<0)
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#define MIN_TEN (1<<1)
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#define HR_UNIT (1<<2)
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#define HR_TEN (1<<3)
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#define PG_UNIT (1<<4)
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#define PG_TEN (1<<5)
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#define PG_HUND (1<<6)
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#define PGMASK_MAX (1<<7)
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#define PGMASK_PAGE (PG_HUND | PG_TEN | PG_UNIT)
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#define PGMASK_HOUR (HR_TEN | HR_UNIT)
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#define PGMASK_MINUTE (MIN_TEN | MIN_UNIT)
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typedef struct
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{
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int page; /* number of requested page (hexadecimal) */
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int hour; /* requested hour (hexadecimal) */
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int minute; /* requested minute (hexadecimal) */
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int pagemask; /* mask defining which values of the above are set */
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int pgbuf; /* buffer where page will be stored */
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int start; /* start of requested part of page */
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int end; /* end of requested part of page */
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void __user *buffer; /* pointer to beginning of destination buffer */
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}
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vtx_pagereq_t;
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/*
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* Definitions for VTXIOC{GETSTAT,PUTSTAT}
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*/
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#define VTX_PAGESIZE (40 * 24)
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#define VTX_VIRTUALSIZE (40 * 49)
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typedef struct
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{
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int pagenum; /* number of page (hexadecimal) */
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int hour; /* hour (hexadecimal) */
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int minute; /* minute (hexadecimal) */
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int charset; /* national charset */
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unsigned delete : 1; /* delete page (C4) */
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unsigned headline : 1; /* insert headline (C5) */
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unsigned subtitle : 1; /* insert subtitle (C6) */
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unsigned supp_header : 1; /* suppress header (C7) */
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unsigned update : 1; /* update page (C8) */
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unsigned inter_seq : 1; /* interrupted sequence (C9) */
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unsigned dis_disp : 1; /* disable/suppress display (C10) */
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unsigned serial : 1; /* serial mode (C11) */
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unsigned notfound : 1; /* /FOUND */
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unsigned pblf : 1; /* PBLF */
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unsigned hamming : 1; /* hamming-error occurred */
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}
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vtx_pageinfo_t;
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#endif /* _VTX_H */
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