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/*
* Teletext support
*
* Copyright (C) 2007 Vladimir Voroshilov <voroshil@gmail.com>
*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPLAYER_DEC_TELETEXT_H
#define MPLAYER_DEC_TELETEXT_H
struct tt_param {
char *device; ///< teletext device
int format; ///< teletext display format
int page; ///< start teletext page
int lang; ///< primary language code
};
#define VBI_CONTROL_FALSE 0
#define VBI_CONTROL_TRUE 1
#define VBI_CONTROL_UNKNOWN -1
#ifdef CONFIG_TV_TELETEXT
int teletext_control(void* p, int cmd, void *arg);
#else
#define teletext_control(p, cmd, arg) VBI_CONTROL_FALSE
#endif
/*
TELETEXT controls (through teletext_control() )
NOTE:
_SET_ should be _GET_ +1
_STEP_ should be _GET_ +2
*/
#define TV_VBI_CONTROL_GET_MODE 0x510 ///< get current mode teletext
#define TV_VBI_CONTROL_SET_MODE 0x511 ///< on/off grab teletext
#define TV_VBI_CONTROL_GET_PAGE 0x513 ///< get grabbed teletext page
#define TV_VBI_CONTROL_SET_PAGE 0x514 ///< set grab teletext page number
#define TV_VBI_CONTROL_STEP_PAGE 0x515 ///< step grab teletext page number
#define TV_VBI_CONTROL_GET_SUBPAGE 0x516 ///< get grabbed teletext page
#define TV_VBI_CONTROL_SET_SUBPAGE 0x517 ///< set grab teletext page number
#define TV_VBI_CONTROL_GET_FORMAT 0x519 ///< get teletext format
#define TV_VBI_CONTROL_SET_FORMAT 0x51a ///< set teletext format
#define TV_VBI_CONTROL_GET_HALF_PAGE 0x51c ///< get current half page
#define TV_VBI_CONTROL_SET_HALF_PAGE 0x51d ///< switch half page
#define TV_VBI_CONTROL_IS_CHANGED 0x540 ///< teletext page is changed
#define TV_VBI_CONTROL_MARK_UNCHANGED 0x541 ///< teletext page is changed
#define TV_VBI_CONTROL_ADD_DEC 0x550 ///< add page number with dec
#define TV_VBI_CONTROL_GO_LINK 0x551 ///< go link (1..6) NYI
#define TV_VBI_CONTROL_GET_VBIPAGE 0x552 ///< get vbi_image for grabbed teletext page
#define TV_VBI_CONTROL_RESET 0x553 ///< vbi reset
#define TV_VBI_CONTROL_START 0x554 ///< vbi start
#define TV_VBI_CONTROL_STOP 0x555 ///< vbi stop
#define TV_VBI_CONTROL_DECODE_PAGE 0x556 ///< decode vbi page
#define TV_VBI_CONTROL_GET_NETWORKNAME 0x557 ///< get current network name
#define VBI_TFORMAT_TEXT 0 ///< text mode
#define VBI_TFORMAT_BW 1 ///< black&white mode
#define VBI_TFORMAT_GRAY 2 ///< grayscale mode
#define VBI_TFORMAT_COLOR 3 ///< color mode (require color_spu patch!)
#define VBI_MAX_PAGES 0x800 ///< max sub pages number
#define VBI_MAX_SUBPAGES 64 ///< max sub pages number
#define VBI_ROWS 25 ///< teletext page height in rows
#define VBI_COLUMNS 40 ///< teletext page width in chars
#define VBI_TIME_LINEPOS 26 ///< time line pos in page header
typedef
enum{
TT_FORMAT_OPAQUE=0, ///< opaque
TT_FORMAT_TRANSPARENT, ///< transparent
TT_FORMAT_OPAQUE_INV, ///< opaque with inverted colors
TT_FORMAT_TRANSPARENT_INV ///< transparent with inverted colors
} teletext_format;
typedef
enum{
TT_ZOOM_NORMAL=0,
TT_ZOOM_TOP_HALF,
TT_ZOOM_BOTTOM_HALF
} teletext_zoom;
typedef struct tt_char_s{
unsigned int unicode; ///< unicode (utf8) character
unsigned char fg; ///< foreground color
unsigned char bg; ///< background color
unsigned char gfx; ///< 0-no gfx, 1-solid gfx, 2-separated gfx
unsigned char flh; ///< 0-no flash, 1-flash
unsigned char hidden; ///< char is hidden (for subtitle pages)
unsigned char ctl; ///< control character
unsigned char lng; ///< lang: 0-secondary language,1-primary language
unsigned char raw; ///< raw character (as received from device)
} tt_char;
typedef struct tt_link_s{
int pagenum; ///< page number
int subpagenum; ///< subpage number
} tt_link_t;
typedef struct tt_page_s{
int pagenum; ///< page number
int subpagenum; ///< subpage number
unsigned char primary_lang; ///< primary language code
unsigned char secondary_lang; ///< secondary language code
unsigned char active; ///< page is complete and ready for rendering
unsigned char flags; ///< page flags
unsigned char raw[VBI_ROWS*VBI_COLUMNS]; ///< page data
struct tt_page_s* next_subpage;
struct tt_link_s links[6];
} tt_page;
#define TT_PGFL_SUPPRESS_HEADER 0x01
#define TT_PGFL_UPDATE_INDICATOR 0x02
#define TT_PGFL_INTERRUPTED_SEQ 0x04
#define TT_PGFL_INHIBIT_DISPLAY 0x08
#define TT_PGFL_NEWFLASH 0x10
#define TT_PGFL_SUBTITLE 0x20
#define TT_PGFL_ERASE_PAGE 0x40
#define TT_PGFL_MAGAZINE_SERIAL 0x80
typedef struct tt_stream_props_s{
int sampling_rate;
int samples_per_line;
int offset;
int count[2]; ///< number of lines in first and second fields
int interlaced; ///< vbi data are interlaced
int bufsize; ///< required buffer size
} tt_stream_props;
#endif /* MPLAYER_DEC_TELETEXT_H */
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