1 /*****************************************************************************
2 * zvbi.c : VBI and Teletext PES demux and decoder using libzvbi
3 *****************************************************************************
4 * Copyright (C) 2007, M2X
7 * Authors: Derk-Jan Hartman <djhartman at m2x dot nl>
8 * Jean-Paul Saman <jpsaman at m2x dot nl>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
24 /*****************************************************************************
26 * information on teletext format can be found here :
27 * http://pdc.ro.nu/teletext.html
29 *****************************************************************************/
31 /* This module implements:
32 * ETSI EN 301 775: VBI data in PES
33 * ETSI EN 300 472: EBU Teletext data in PES
34 * ETSI EN 300 706: Enhanced Teletext (libzvbi)
35 * ETSI EN 300 231: Video Programme System [VPS] (libzvbi)
36 * ETSI EN 300 294: 625-line Wide Screen Signaling [WSS] (libzvbi)
37 * EIA-608 Revision A: Closed Captioning [CC] (libzvbi)
44 #include <vlc_common.h>
45 #include <vlc_plugin.h>
49 #include <vlc_codec.h>
51 /*****************************************************************************
53 *****************************************************************************/
54 static int Open ( vlc_object_t
* );
55 static void Close( vlc_object_t
* );
57 #define PAGE_TEXT N_("Teletext page")
58 #define PAGE_LONGTEXT N_("Open the indicated Teletext page." \
59 "Default page is index 100")
61 #define OPAQUE_TEXT N_("Teletext transparency")
62 #define OPAQUE_LONGTEXT N_("Setting vbi-opaque to false " \
63 "makes the boxed text transparent." )
65 #define POS_TEXT N_("Teletext alignment")
66 #define POS_LONGTEXT N_( \
67 "You can enforce the teletext position on the video " \
68 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
69 "also use combinations of these values, eg. 6 = top-right).")
71 #define TELX_TEXT N_("Teletext text subtitles")
72 #define TELX_LONGTEXT N_( "Output teletext subtitles as text " \
73 "instead of as RGBA" )
75 static const int pi_pos_values
[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
76 static const char *const ppsz_pos_descriptions
[] =
77 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
78 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
81 set_description( N_("VBI and Teletext decoder") )
82 set_shortname( N_("VBI & Teletext") )
83 set_capability( "decoder", 51 )
84 set_category( CAT_INPUT
)
85 set_subcategory( SUBCAT_INPUT_SCODEC
)
86 set_callbacks( Open
, Close
)
88 add_integer( "vbi-page", 100,
89 PAGE_TEXT
, PAGE_LONGTEXT
, false )
90 add_bool( "vbi-opaque", true,
91 OPAQUE_TEXT
, OPAQUE_LONGTEXT
, false )
92 add_integer( "vbi-position", 4, POS_TEXT
, POS_LONGTEXT
, false )
93 change_integer_list( pi_pos_values
, ppsz_pos_descriptions
);
94 add_bool( "vbi-text", false,
95 TELX_TEXT
, TELX_LONGTEXT
, false )
98 /****************************************************************************
100 ****************************************************************************/
102 // #define ZVBI_DEBUG
104 //Guessing table for missing "default region triplet"
105 static const int pi_default_triplet
[] = {
108 24,24,24,24, //ssc scr slv rum
109 32,32,32,32,32, //est lit rus bul ukr
114 static const char *const ppsz_default_triplet
[] = {
117 "ssc", "scr", "slv", "rum",
118 "est", "lit", "rus", "bul", "ukr",
126 ZVBI_KEY_RED
= 'r' << 16,
127 ZVBI_KEY_GREEN
= 'g' << 16,
128 ZVBI_KEY_YELLOW
= 'y' << 16,
129 ZVBI_KEY_BLUE
= 'b' << 16,
130 ZVBI_KEY_INDEX
= 'i' << 16,
134 DATA_UNIT_EBU_TELETEXT_NON_SUBTITLE
= 0x02,
135 DATA_UNIT_EBU_TELETEXT_SUBTITLE
= 0x03,
136 DATA_UNIT_EBU_TELETEXT_INVERTED
= 0x0C,
138 DATA_UNIT_ZVBI_WSS_CPR1204
= 0xB4,
139 DATA_UNIT_ZVBI_CLOSED_CAPTION_525
= 0xB5,
140 DATA_UNIT_ZVBI_MONOCHROME_SAMPLES_525
= 0xB6,
142 DATA_UNIT_VPS
= 0xC3,
143 DATA_UNIT_WSS
= 0xC4,
144 DATA_UNIT_CLOSED_CAPTION
= 0xC5,
145 DATA_UNIT_MONOCHROME_SAMPLES
= 0xC6,
147 DATA_UNIT_STUFFING
= 0xFF,
152 vbi_decoder
* p_vbi_dec
;
153 vbi_dvb_demux
* p_dvb_demux
;
154 unsigned int i_last_page
;
156 bool b_text
; /* Subtitles as text */
158 vlc_mutex_t lock
; /* Lock to protect the following variables */
159 /* Positioning of Teletext images */
162 unsigned int i_wanted_page
;
163 unsigned int i_wanted_subpage
;
172 static subpicture_t
*Decode( decoder_t
*, block_t
** );
174 static subpicture_t
*Subpicture( decoder_t
*p_dec
, video_format_t
*p_fmt
,
176 int i_columns
, int i_rows
,
177 int i_align
, mtime_t i_pts
);
179 static void EventHandler( vbi_event
*ev
, void *user_data
);
180 static int OpaquePage( picture_t
*p_src
, const vbi_page p_page
,
181 const video_format_t fmt
, bool b_opaque
);
183 /* Properties callbacks */
184 static int RequestPage( vlc_object_t
*p_this
, char const *psz_cmd
,
185 vlc_value_t oldval
, vlc_value_t newval
, void *p_data
);
186 static int Opaque( vlc_object_t
*p_this
, char const *psz_cmd
,
187 vlc_value_t oldval
, vlc_value_t newval
, void *p_data
);
188 static int Position( vlc_object_t
*p_this
, char const *psz_cmd
,
189 vlc_value_t oldval
, vlc_value_t newval
, void *p_data
);
190 static int EventKey( vlc_object_t
*p_this
, char const *psz_cmd
,
191 vlc_value_t oldval
, vlc_value_t newval
, void *p_data
);
193 /*****************************************************************************
194 * Open: probe the decoder and return score
195 *****************************************************************************
196 * Tries to launch a decoder and return score so that the interface is able
198 *****************************************************************************/
199 static int Open( vlc_object_t
*p_this
)
201 decoder_t
*p_dec
= (decoder_t
*) p_this
;
202 decoder_sys_t
*p_sys
= NULL
;
204 if( p_dec
->fmt_in
.i_codec
!= VLC_CODEC_TELETEXT
)
207 p_dec
->pf_decode_sub
= Decode
;
208 p_sys
= p_dec
->p_sys
= calloc( 1, sizeof(decoder_sys_t
) );
212 p_sys
->i_key
[0] = p_sys
->i_key
[1] = p_sys
->i_key
[2] = '*' - '0';
213 p_sys
->b_update
= false;
214 p_sys
->p_vbi_dec
= vbi_decoder_new();
215 p_sys
->p_dvb_demux
= vbi_dvb_pes_demux_new( NULL
, NULL
);
216 vlc_mutex_init( &p_sys
->lock
);
218 if( (p_sys
->p_vbi_dec
== NULL
) || (p_sys
->p_dvb_demux
== NULL
) )
220 msg_Err( p_dec
, "VBI decoder/demux could not be created." );
225 /* Some broadcasters in countries with level 1 and level 1.5 still not send a G0 to do
226 * matches against table 32 of ETSI 300 706. We try to do some best effort guessing
227 * This is not perfect, but might handle some cases where we know the vbi language
228 * is known. It would be better if people started sending G0 */
229 for( int i
= 0; ppsz_default_triplet
[i
] != NULL
; i
++ )
231 if( p_dec
->fmt_in
.psz_language
&& !strcasecmp( p_dec
->fmt_in
.psz_language
, ppsz_default_triplet
[i
] ) )
233 vbi_teletext_set_default_region( p_sys
->p_vbi_dec
, pi_default_triplet
[i
]);
234 msg_Dbg( p_dec
, "overwriting default zvbi region: %d", pi_default_triplet
[i
] );
238 vbi_event_handler_register( p_sys
->p_vbi_dec
, VBI_EVENT_TTX_PAGE
| VBI_EVENT_NETWORK
|
240 VBI_EVENT_CAPTION
| VBI_EVENT_TRIGGER
|
241 VBI_EVENT_ASPECT
| VBI_EVENT_PROG_INFO
| VBI_EVENT_NETWORK_ID
|
243 0 , EventHandler
, p_dec
);
245 /* Create the var on vlc_global. */
246 p_sys
->i_wanted_page
= var_CreateGetInteger( p_dec
, "vbi-page" );
247 var_AddCallback( p_dec
, "vbi-page", RequestPage
, p_sys
);
249 /* Check if the Teletext track has a known "initial page". */
250 if( p_sys
->i_wanted_page
== 100 && p_dec
->fmt_in
.subs
.teletext
.i_magazine
!= -1 )
252 p_sys
->i_wanted_page
= 100 * p_dec
->fmt_in
.subs
.teletext
.i_magazine
+
253 vbi_bcd2dec( p_dec
->fmt_in
.subs
.teletext
.i_page
);
254 var_SetInteger( p_dec
, "vbi-page", p_sys
->i_wanted_page
);
256 p_sys
->i_wanted_subpage
= VBI_ANY_SUBNO
;
258 p_sys
->b_opaque
= var_CreateGetBool( p_dec
, "vbi-opaque" );
259 var_AddCallback( p_dec
, "vbi-opaque", Opaque
, p_sys
);
261 p_sys
->i_align
= var_CreateGetInteger( p_dec
, "vbi-position" );
262 var_AddCallback( p_dec
, "vbi-position", Position
, p_sys
);
264 p_sys
->b_text
= var_CreateGetBool( p_dec
, "vbi-text" );
265 // var_AddCallback( p_dec, "vbi-text", Text, p_sys );
267 /* Listen for keys */
268 var_AddCallback( p_dec
->p_libvlc
, "key-pressed", EventKey
, p_dec
);
270 es_format_Init( &p_dec
->fmt_out
, SPU_ES
, VLC_CODEC_SPU
);
272 p_dec
->fmt_out
.video
.i_chroma
= VLC_CODEC_TEXT
;
274 p_dec
->fmt_out
.video
.i_chroma
= VLC_CODEC_RGBA
;
278 /*****************************************************************************
280 *****************************************************************************/
281 static void Close( vlc_object_t
*p_this
)
283 decoder_t
*p_dec
= (decoder_t
*) p_this
;
284 decoder_sys_t
*p_sys
= p_dec
->p_sys
;
286 var_DelCallback( p_dec
, "vbi-position", Position
, p_sys
);
287 var_DelCallback( p_dec
, "vbi-opaque", Opaque
, p_sys
);
288 var_DelCallback( p_dec
, "vbi-page", RequestPage
, p_sys
);
289 var_DelCallback( p_dec
->p_libvlc
, "key-pressed", EventKey
, p_dec
);
291 vlc_mutex_destroy( &p_sys
->lock
);
293 if( p_sys
->p_vbi_dec
)
294 vbi_decoder_delete( p_sys
->p_vbi_dec
);
295 if( p_sys
->p_dvb_demux
)
296 vbi_dvb_demux_delete( p_sys
->p_dvb_demux
);
300 #define MAX_SLICES 32
302 #ifdef WORDS_BIGENDIAN
303 # define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_BE
305 # define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_LE
309 /*****************************************************************************
311 *****************************************************************************/
312 static subpicture_t
*Decode( decoder_t
*p_dec
, block_t
**pp_block
)
314 decoder_sys_t
*p_sys
= p_dec
->p_sys
;
316 subpicture_t
*p_spu
= NULL
;
318 bool b_cached
= false;
320 const uint8_t *p_pos
;
323 if( (pp_block
== NULL
) || (*pp_block
== NULL
) )
329 p_pos
= p_block
->p_buffer
;
330 i_left
= p_block
->i_buffer
;
334 vbi_sliced p_sliced
[MAX_SLICES
];
335 unsigned int i_lines
= 0;
338 i_lines
= vbi_dvb_demux_cor( p_sys
->p_dvb_demux
, p_sliced
,
339 MAX_SLICES
, &i_pts
, &p_pos
, &i_left
);
342 vbi_decode( p_sys
->p_vbi_dec
, p_sliced
, i_lines
, i_pts
/ 90000.0 );
346 vlc_mutex_lock( &p_sys
->lock
);
347 const int i_align
= p_sys
->i_align
;
348 const unsigned int i_wanted_page
= p_sys
->i_wanted_page
;
349 const unsigned int i_wanted_subpage
= p_sys
->i_wanted_subpage
;
350 const bool b_opaque
= p_sys
->b_opaque
;
351 vlc_mutex_unlock( &p_sys
->lock
);
353 /* Try to see if the page we want is in the cache yet */
354 memset( &p_page
, 0, sizeof(vbi_page
) );
355 b_cached
= vbi_fetch_vt_page( p_sys
->p_vbi_dec
, &p_page
,
356 vbi_dec2bcd( i_wanted_page
),
357 i_wanted_subpage
, VBI_WST_LEVEL_3p5
,
360 if( i_wanted_page
== p_sys
->i_last_page
&& !p_sys
->b_update
)
365 if( p_sys
->i_last_page
!= i_wanted_page
)
367 /* We need to reset the subtitle */
368 p_spu
= Subpicture( p_dec
, &fmt
, true,
369 p_page
.columns
, p_page
.rows
,
370 i_align
, p_block
->i_pts
);
373 p_spu
->p_region
->psz_text
= strdup("");
375 p_sys
->b_update
= true;
376 p_sys
->i_last_page
= i_wanted_page
;
382 p_sys
->b_update
= false;
383 p_sys
->i_last_page
= i_wanted_page
;
385 msg_Dbg( p_dec
, "we now have page: %d ready for display",
388 /* If there is a page or sub to render, then we do that here */
389 /* Create the subpicture unit */
390 p_spu
= Subpicture( p_dec
, &fmt
, p_sys
->b_text
,
391 p_page
.columns
, p_page
.rows
,
392 i_align
, p_block
->i_pts
);
398 unsigned int i_textsize
= 7000;
400 char p_text
[i_textsize
+1];
402 i_total
= vbi_print_page_region( &p_page
, p_text
, i_textsize
,
403 "UTF-8", 0, 0, 0, 0, p_page
.columns
, p_page
.rows
);
404 p_text
[i_total
] = '\0';
405 /* Strip off the pagenumber */
408 p_spu
->p_region
->psz_text
= strdup( &p_text
[8] );
411 msg_Info( p_dec
, "page %x-%x(%d)\n%s", p_page
.pgno
, p_page
.subno
, i_total
, p_text
);
416 picture_t
*p_pic
= p_spu
->p_region
->p_picture
;
418 /* ZVBI is stupid enough to assume pitch == width */
419 p_pic
->p
->i_pitch
= 4 * fmt
.i_width
;
420 vbi_draw_vt_page( &p_page
, ZVBI_PIXFMT_RGBA32
,
421 p_spu
->p_region
->p_picture
->p
->p_pixels
, 1, 1 );
423 vlc_mutex_lock( &p_sys
->lock
);
424 memcpy( p_sys
->nav_link
, &p_page
.nav_link
, sizeof( p_sys
->nav_link
)) ;
425 vlc_mutex_unlock( &p_sys
->lock
);
427 OpaquePage( p_pic
, p_page
, fmt
, b_opaque
);
431 vbi_unref_page( &p_page
);
432 block_Release( p_block
);
436 vbi_unref_page( &p_page
);
439 decoder_DeleteSubpicture( p_dec
, p_spu
);
443 block_Release( p_block
);
447 static subpicture_t
*Subpicture( decoder_t
*p_dec
, video_format_t
*p_fmt
,
449 int i_columns
, int i_rows
, int i_align
,
455 /* If there is a page or sub to render, then we do that here */
456 /* Create the subpicture unit */
457 p_spu
= decoder_NewSubpicture( p_dec
, NULL
);
460 msg_Warn( p_dec
, "can't get spu buffer" );
464 memset( &fmt
, 0, sizeof(video_format_t
) );
465 fmt
.i_chroma
= b_text
? VLC_CODEC_TEXT
:
469 fmt
.i_bits_per_pixel
= 0;
477 fmt
.i_width
= fmt
.i_visible_width
= i_columns
* 12;
478 fmt
.i_height
= fmt
.i_visible_height
= i_rows
* 10;
479 fmt
.i_bits_per_pixel
= 32;
481 fmt
.i_x_offset
= fmt
.i_y_offset
= 0;
483 p_spu
->p_region
= subpicture_region_New( &fmt
);
484 if( p_spu
->p_region
== NULL
)
486 msg_Err( p_dec
, "cannot allocate SPU region" );
487 decoder_DeleteSubpicture( p_dec
, p_spu
);
491 p_spu
->p_region
->i_x
= 0;
492 p_spu
->p_region
->i_y
= 0;
493 p_spu
->p_region
->i_align
= i_align
;
495 p_spu
->i_start
= i_pts
;
497 p_spu
->b_ephemer
= true;
498 p_spu
->b_absolute
= false;
502 p_spu
->i_original_picture_width
= fmt
.i_width
;
503 p_spu
->i_original_picture_height
= fmt
.i_height
;
511 static void EventHandler( vbi_event
*ev
, void *user_data
)
513 decoder_t
*p_dec
= (decoder_t
*)user_data
;
514 decoder_sys_t
*p_sys
= p_dec
->p_sys
;
516 if( ev
->type
== VBI_EVENT_TTX_PAGE
)
519 msg_Info( p_dec
, "Page %03x.%02x ",
520 ev
->ev
.ttx_page
.pgno
,
521 ev
->ev
.ttx_page
.subno
& 0xFF);
523 if( p_sys
->i_last_page
== vbi_bcd2dec( ev
->ev
.ttx_page
.pgno
) )
524 p_sys
->b_update
= true;
526 if( ev
->ev
.ttx_page
.clock_update
)
527 msg_Dbg( p_dec
, "clock" );
528 if( ev
->ev
.ttx_page
.header_update
)
529 msg_Dbg( p_dec
, "header" );
532 else if( ev
->type
== VBI_EVENT_CLOSE
)
533 msg_Dbg( p_dec
, "Close event" );
534 else if( ev
->type
== VBI_EVENT_CAPTION
)
535 msg_Dbg( p_dec
, "Caption line: %x", ev
->ev
.caption
.pgno
);
536 else if( ev
->type
== VBI_EVENT_NETWORK
)
538 msg_Dbg( p_dec
, "Network change");
539 vbi_network n
= ev
->ev
.network
;
540 msg_Dbg( p_dec
, "Network id:%d name: %s, call: %s ", n
.nuid
, n
.name
, n
.call
);
542 else if( ev
->type
== VBI_EVENT_TRIGGER
)
543 msg_Dbg( p_dec
, "Trigger event" );
544 else if( ev
->type
== VBI_EVENT_ASPECT
)
545 msg_Dbg( p_dec
, "Aspect update" );
546 else if( ev
->type
== VBI_EVENT_PROG_INFO
)
547 msg_Dbg( p_dec
, "Program info received" );
548 else if( ev
->type
== VBI_EVENT_NETWORK_ID
)
549 msg_Dbg( p_dec
, "Network ID changed" );
552 static int OpaquePage( picture_t
*p_src
, const vbi_page p_page
,
553 const video_format_t fmt
, bool b_opaque
)
557 assert( fmt
.i_chroma
== VLC_CODEC_RGBA
);
559 /* Kludge since zvbi doesn't provide an option to specify opacity. */
560 for( y
= 0; y
< fmt
.i_height
; y
++ )
562 for( x
= 0; x
< fmt
.i_width
; x
++ )
564 const vbi_opacity opacity
= p_page
.text
[ y
/10 * p_page
.columns
+ x
/12 ].opacity
;
565 const int background
= p_page
.text
[ y
/10 * p_page
.columns
+ x
/12 ].background
;
566 uint32_t *p_pixel
= (uint32_t*)&p_src
->p
->p_pixels
[y
* p_src
->p
->i_pitch
+ 4*x
];
570 /* Show video instead of this character */
571 case VBI_TRANSPARENT_SPACE
:
574 /* Display foreground and background color */
575 /* To make the boxed text "closed captioning" transparent
576 * change true to false.
579 /* alpha blend video into background color */
580 case VBI_SEMI_TRANSPARENT
:
583 /* Full text transparency. only foreground color is show */
584 case VBI_TRANSPARENT_FULL
:
585 if( (*p_pixel
) == (0xff000000 | p_page
.color_map
[background
] ) )
596 static int RequestPage( vlc_object_t
*p_this
, char const *psz_cmd
,
597 vlc_value_t oldval
, vlc_value_t newval
, void *p_data
)
599 decoder_sys_t
*p_sys
= p_data
;
600 VLC_UNUSED(p_this
); VLC_UNUSED(psz_cmd
); VLC_UNUSED(oldval
);
602 vlc_mutex_lock( &p_sys
->lock
);
603 switch( newval
.i_int
)
606 p_sys
->i_wanted_page
= vbi_bcd2dec( p_sys
->nav_link
[0].pgno
);
607 p_sys
->i_wanted_subpage
= p_sys
->nav_link
[0].subno
;
610 p_sys
->i_wanted_page
= vbi_bcd2dec( p_sys
->nav_link
[1].pgno
);
611 p_sys
->i_wanted_subpage
= p_sys
->nav_link
[1].subno
;
613 case ZVBI_KEY_YELLOW
:
614 p_sys
->i_wanted_page
= vbi_bcd2dec( p_sys
->nav_link
[2].pgno
);
615 p_sys
->i_wanted_subpage
= p_sys
->nav_link
[2].subno
;
618 p_sys
->i_wanted_page
= vbi_bcd2dec( p_sys
->nav_link
[3].pgno
);
619 p_sys
->i_wanted_subpage
= p_sys
->nav_link
[3].subno
;
622 p_sys
->i_wanted_page
= vbi_bcd2dec( p_sys
->nav_link
[5].pgno
); /* #4 is SKIPPED */
623 p_sys
->i_wanted_subpage
= p_sys
->nav_link
[5].subno
;
626 if( newval
.i_int
> 0 && newval
.i_int
< 999 )
628 p_sys
->i_wanted_page
= newval
.i_int
;
629 p_sys
->i_wanted_subpage
= VBI_ANY_SUBNO
;
631 vlc_mutex_unlock( &p_sys
->lock
);
636 static int Opaque( vlc_object_t
*p_this
, char const *psz_cmd
,
637 vlc_value_t oldval
, vlc_value_t newval
, void *p_data
)
639 decoder_sys_t
*p_sys
= p_data
;
640 VLC_UNUSED(p_this
); VLC_UNUSED(psz_cmd
); VLC_UNUSED(oldval
);
642 vlc_mutex_lock( &p_sys
->lock
);
643 p_sys
->b_opaque
= newval
.b_bool
;
644 p_sys
->b_update
= true;
645 vlc_mutex_unlock( &p_sys
->lock
);
650 static int Position( vlc_object_t
*p_this
, char const *psz_cmd
,
651 vlc_value_t oldval
, vlc_value_t newval
, void *p_data
)
653 decoder_sys_t
*p_sys
= p_data
;
654 VLC_UNUSED(p_this
); VLC_UNUSED(psz_cmd
); VLC_UNUSED(oldval
);
656 vlc_mutex_lock( &p_sys
->lock
);
657 p_sys
->i_align
= newval
.i_int
;
658 vlc_mutex_unlock( &p_sys
->lock
);
663 static int EventKey( vlc_object_t
*p_this
, char const *psz_cmd
,
664 vlc_value_t oldval
, vlc_value_t newval
, void *p_data
)
666 decoder_t
*p_dec
= p_data
;
667 decoder_sys_t
*p_sys
= p_dec
->p_sys
;
669 VLC_UNUSED(psz_cmd
); VLC_UNUSED(oldval
); VLC_UNUSED( p_this
);
671 /* FIXME: Capture + and - key for subpage browsing */
672 if( newval
.i_int
== '-' || newval
.i_int
== '+' )
674 vlc_mutex_lock( &p_sys
->lock
);
675 if( p_sys
->i_wanted_subpage
== VBI_ANY_SUBNO
&& newval
.i_int
== '+' )
676 p_sys
->i_wanted_subpage
= vbi_dec2bcd(1);
677 else if ( newval
.i_int
== '+' )
678 p_sys
->i_wanted_subpage
= vbi_add_bcd( p_sys
->i_wanted_subpage
, 1);
679 else if( newval
.i_int
== '-')
680 p_sys
->i_wanted_subpage
= vbi_add_bcd( p_sys
->i_wanted_subpage
, 0xF9999999); /* BCD complement - 1 */
682 if ( !vbi_bcd_digits_greater( p_sys
->i_wanted_subpage
, 0x00 ) || vbi_bcd_digits_greater( p_sys
->i_wanted_subpage
, 0x99 ) )
683 p_sys
->i_wanted_subpage
= VBI_ANY_SUBNO
;
685 msg_Info( p_dec
, "subpage: %d",
686 vbi_bcd2dec( p_sys
->i_wanted_subpage
) );
688 p_sys
->b_update
= true;
689 vlc_mutex_unlock( &p_sys
->lock
);
692 /* Capture 0-9 for page selection */
693 if( newval
.i_int
< '0' || newval
.i_int
> '9' )
696 vlc_mutex_lock( &p_sys
->lock
);
697 p_sys
->i_key
[0] = p_sys
->i_key
[1];
698 p_sys
->i_key
[1] = p_sys
->i_key
[2];
699 p_sys
->i_key
[2] = (int)(newval
.i_int
- '0');
700 msg_Info( p_dec
, "page: %c%c%c", (char)(p_sys
->i_key
[0]+'0'),
701 (char)(p_sys
->i_key
[1]+'0'), (char)(p_sys
->i_key
[2]+'0') );
705 if( p_sys
->i_key
[0] > 0 && p_sys
->i_key
[0] <= 8 &&
706 p_sys
->i_key
[1] >= 0 && p_sys
->i_key
[1] <= 9 &&
707 p_sys
->i_key
[2] >= 0 && p_sys
->i_key
[2] <= 9 )
709 i_new_page
= p_sys
->i_key
[0]*100 + p_sys
->i_key
[1]*10 + p_sys
->i_key
[2];
710 p_sys
->i_key
[0] = p_sys
->i_key
[1] = p_sys
->i_key
[2] = '*' - '0';
712 vlc_mutex_unlock( &p_sys
->lock
);
715 var_SetInteger( p_dec
, "vbi-page", i_new_page
);