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 it
11 * under the terms of the GNU Lesser General Public License as published by
12 * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this program; if not, write to the Free Software Foundation,
22 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 * information on teletext format can be found here :
28 * http://pdc.ro.nu/teletext.html
30 *****************************************************************************/
32 /* This module implements:
33 * ETSI EN 301 775: VBI data in PES
34 * ETSI EN 300 472: EBU Teletext data in PES
35 * ETSI EN 300 706: Enhanced Teletext (libzvbi)
36 * ETSI EN 300 231: Video Programme System [VPS] (libzvbi)
37 * ETSI EN 300 294: 625-line Wide Screen Signaling [WSS] (libzvbi)
38 * EIA-608 Revision A: Closed Captioning [CC] (libzvbi)
47 #include <vlc_common.h>
48 #include <vlc_plugin.h>
52 #include <vlc_codec.h>
54 /*****************************************************************************
56 *****************************************************************************/
57 static int Open ( vlc_object_t * );
58 static void Close( vlc_object_t * );
60 #define PAGE_TEXT N_("Teletext page")
61 #define PAGE_LONGTEXT N_("Open the indicated Teletext page." \
62 "Default page is index 100")
64 #define OPAQUE_TEXT N_("Teletext transparency")
65 #define OPAQUE_LONGTEXT N_("Setting vbi-opaque to false " \
66 "makes the boxed text transparent." )
68 #define POS_TEXT N_("Teletext alignment")
69 #define POS_LONGTEXT N_( \
70 "You can enforce the teletext position on the video " \
71 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
72 "also use combinations of these values, eg. 6 = top-right).")
74 #define TELX_TEXT N_("Teletext text subtitles")
75 #define TELX_LONGTEXT N_( "Output teletext subtitles as text " \
76 "instead of as RGBA" )
78 static const int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
79 static const char *const ppsz_pos_descriptions[] =
80 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
81 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
84 set_description( N_("VBI and Teletext decoder") )
85 set_shortname( N_("VBI & Teletext") )
86 set_capability( "decoder", 51 )
87 set_category( CAT_INPUT )
88 set_subcategory( SUBCAT_INPUT_SCODEC )
89 set_callbacks( Open, Close )
91 add_integer( "vbi-page", 100,
92 PAGE_TEXT, PAGE_LONGTEXT, false )
93 add_bool( "vbi-opaque", true,
94 OPAQUE_TEXT, OPAQUE_LONGTEXT, false )
95 add_integer( "vbi-position", 8, POS_TEXT, POS_LONGTEXT, false )
96 change_integer_list( pi_pos_values, ppsz_pos_descriptions );
97 add_bool( "vbi-text", false,
98 TELX_TEXT, TELX_LONGTEXT, false )
101 /****************************************************************************
103 ****************************************************************************/
105 // #define ZVBI_DEBUG
107 //Guessing table for missing "default region triplet"
108 static const int pi_default_triplet[] = {
109 0, 0, 0, 0, // slo slk cze ces
111 24,24,24,24,24, //scc scr srp hrv slv
113 32,32,32,32,32, //est lit rus bul ukr
118 static const char *const ppsz_default_triplet[] = {
119 "slo", "slk", "cze", "ces",
121 "scc", "scr", "srp", "hrv", "slv",
123 "est", "lit", "rus", "bul", "ukr",
131 ZVBI_KEY_RED = 'r' << 16,
132 ZVBI_KEY_GREEN = 'g' << 16,
133 ZVBI_KEY_YELLOW = 'y' << 16,
134 ZVBI_KEY_BLUE = 'b' << 16,
135 ZVBI_KEY_INDEX = 'i' << 16,
138 #define MAX_SLICES 32
142 vbi_decoder * p_vbi_dec;
143 vbi_sliced p_vbi_sliced[MAX_SLICES];
144 unsigned int i_last_page;
146 bool b_text; /* Subtitles as text */
148 vlc_mutex_t lock; /* Lock to protect the following variables */
149 /* Positioning of Teletext images */
152 unsigned int i_wanted_page;
153 unsigned int i_wanted_subpage;
162 static subpicture_t *Decode( decoder_t *, block_t ** );
164 static subpicture_t *Subpicture( decoder_t *p_dec, video_format_t *p_fmt,
166 int i_columns, int i_rows,
167 int i_align, mtime_t i_pts );
169 static void EventHandler( vbi_event *ev, void *user_data );
170 static int OpaquePage( picture_t *p_src, const vbi_page *p_page,
171 const video_format_t fmt, bool b_opaque, const int text_offset );
172 static int get_first_visible_row( vbi_char *p_text, int rows, int columns);
173 static int get_last_visible_row( vbi_char *p_text, int rows, int columns);
175 /* Properties callbacks */
176 static int RequestPage( vlc_object_t *p_this, char const *psz_cmd,
177 vlc_value_t oldval, vlc_value_t newval, void *p_data );
178 static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
179 vlc_value_t oldval, vlc_value_t newval, void *p_data );
180 static int Position( vlc_object_t *p_this, char const *psz_cmd,
181 vlc_value_t oldval, vlc_value_t newval, void *p_data );
182 static int EventKey( vlc_object_t *p_this, char const *psz_cmd,
183 vlc_value_t oldval, vlc_value_t newval, void *p_data );
185 /*****************************************************************************
186 * Open: probe the decoder and return score
187 *****************************************************************************
188 * Tries to launch a decoder and return score so that the interface is able
190 *****************************************************************************/
191 static int Open( vlc_object_t *p_this )
193 decoder_t *p_dec = (decoder_t *) p_this;
194 decoder_sys_t *p_sys = NULL;
196 if( p_dec->fmt_in.i_codec != VLC_CODEC_TELETEXT )
199 p_sys = p_dec->p_sys = calloc( 1, sizeof(decoder_sys_t) );
203 p_sys->i_key[0] = p_sys->i_key[1] = p_sys->i_key[2] = '*' - '0';
204 p_sys->b_update = false;
205 p_sys->p_vbi_dec = vbi_decoder_new();
206 vlc_mutex_init( &p_sys->lock );
208 if( p_sys->p_vbi_dec == NULL )
210 msg_Err( p_dec, "VBI decoder could not be created." );
215 /* Some broadcasters in countries with level 1 and level 1.5 still not send a G0 to do
216 * matches against table 32 of ETSI 300 706. We try to do some best effort guessing
217 * This is not perfect, but might handle some cases where we know the vbi language
218 * is known. It would be better if people started sending G0 */
219 for( int i = 0; ppsz_default_triplet[i] != NULL; i++ )
221 if( p_dec->fmt_in.psz_language && !strcasecmp( p_dec->fmt_in.psz_language, ppsz_default_triplet[i] ) )
223 vbi_teletext_set_default_region( p_sys->p_vbi_dec, pi_default_triplet[i]);
224 msg_Dbg( p_dec, "overwriting default zvbi region: %d", pi_default_triplet[i] );
228 vbi_event_handler_register( p_sys->p_vbi_dec, VBI_EVENT_TTX_PAGE | VBI_EVENT_NETWORK |
230 VBI_EVENT_CAPTION | VBI_EVENT_TRIGGER |
231 VBI_EVENT_ASPECT | VBI_EVENT_PROG_INFO | VBI_EVENT_NETWORK_ID |
233 0 , EventHandler, p_dec );
235 /* Create the var on vlc_global. */
236 p_sys->i_wanted_page = var_CreateGetInteger( p_dec, "vbi-page" );
237 var_AddCallback( p_dec, "vbi-page", RequestPage, p_sys );
239 /* Check if the Teletext track has a known "initial page". */
240 if( p_sys->i_wanted_page == 100 && p_dec->fmt_in.subs.teletext.i_magazine != -1 )
242 p_sys->i_wanted_page = 100 * p_dec->fmt_in.subs.teletext.i_magazine +
243 vbi_bcd2dec( p_dec->fmt_in.subs.teletext.i_page );
244 var_SetInteger( p_dec, "vbi-page", p_sys->i_wanted_page );
246 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
248 p_sys->b_opaque = var_CreateGetBool( p_dec, "vbi-opaque" );
249 var_AddCallback( p_dec, "vbi-opaque", Opaque, p_sys );
251 p_sys->i_align = var_CreateGetInteger( p_dec, "vbi-position" );
252 var_AddCallback( p_dec, "vbi-position", Position, p_sys );
254 p_sys->b_text = var_CreateGetBool( p_dec, "vbi-text" );
255 // var_AddCallback( p_dec, "vbi-text", Text, p_sys );
257 /* Listen for keys */
258 var_AddCallback( p_dec->p_libvlc, "key-pressed", EventKey, p_dec );
260 es_format_Init( &p_dec->fmt_out, SPU_ES, VLC_CODEC_SPU );
262 p_dec->fmt_out.video.i_chroma = VLC_CODEC_TEXT;
264 p_dec->fmt_out.video.i_chroma = VLC_CODEC_RGBA;
266 p_dec->pf_decode_sub = Decode;
270 /*****************************************************************************
272 *****************************************************************************/
273 static void Close( vlc_object_t *p_this )
275 decoder_t *p_dec = (decoder_t*) p_this;
276 decoder_sys_t *p_sys = p_dec->p_sys;
278 var_DelCallback( p_dec, "vbi-position", Position, p_sys );
279 var_DelCallback( p_dec, "vbi-opaque", Opaque, p_sys );
280 var_DelCallback( p_dec, "vbi-page", RequestPage, p_sys );
281 var_DelCallback( p_dec->p_libvlc, "key-pressed", EventKey, p_dec );
283 vlc_mutex_destroy( &p_sys->lock );
285 if( p_sys->p_vbi_dec )
286 vbi_decoder_delete( p_sys->p_vbi_dec );
290 #ifdef WORDS_BIGENDIAN
291 # define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_BE
293 # define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_LE
296 /*****************************************************************************
298 *****************************************************************************/
299 static subpicture_t *Decode( decoder_t *p_dec, block_t **pp_block )
301 decoder_sys_t *p_sys = p_dec->p_sys;
303 subpicture_t *p_spu = NULL;
305 bool b_cached = false;
308 if( (pp_block == NULL) || (*pp_block == NULL) )
314 if( p_block->i_buffer > 0 &&
315 ( ( p_block->p_buffer[0] >= 0x10 && p_block->p_buffer[0] <= 0x1f ) ||
316 ( p_block->p_buffer[0] >= 0x99 && p_block->p_buffer[0] <= 0x9b ) ) )
318 vbi_sliced *p_sliced = p_sys->p_vbi_sliced;
319 unsigned int i_lines = 0;
323 while( p_block->i_buffer >= 2 )
325 int i_id = p_block->p_buffer[0];
326 unsigned i_size = p_block->p_buffer[1];
328 if( 2 + i_size > p_block->i_buffer )
331 if( ( i_id == 0x02 || i_id == 0x03 ) && i_size >= 44 && i_lines < MAX_SLICES )
333 unsigned line_offset = p_block->p_buffer[2] & 0x1f;
334 unsigned field_parity = p_block->p_buffer[2] & 0x20;
336 p_sliced[i_lines].id = VBI_SLICED_TELETEXT_B;
337 if( line_offset > 0 )
338 p_sliced[i_lines].line = line_offset + (field_parity ? 0 : 313);
340 p_sliced[i_lines].line = 0;
341 for( int i = 0; i < 42; i++ )
342 p_sliced[i_lines].data[i] = vbi_rev8( p_block->p_buffer[4 + i] );
346 p_block->i_buffer -= 2 + i_size;
347 p_block->p_buffer += 2 + i_size;
351 vbi_decode( p_sys->p_vbi_dec, p_sliced, i_lines, 0 );
355 vlc_mutex_lock( &p_sys->lock );
356 const int i_align = p_sys->i_align;
357 const unsigned int i_wanted_page = p_sys->i_wanted_page;
358 const unsigned int i_wanted_subpage = p_sys->i_wanted_subpage;
359 const bool b_opaque = p_sys->b_opaque;
360 vlc_mutex_unlock( &p_sys->lock );
362 /* Try to see if the page we want is in the cache yet */
363 memset( &p_page, 0, sizeof(vbi_page) );
364 b_cached = vbi_fetch_vt_page( p_sys->p_vbi_dec, &p_page,
365 vbi_dec2bcd( i_wanted_page ),
366 i_wanted_subpage, VBI_WST_LEVEL_3p5,
369 if( i_wanted_page == p_sys->i_last_page && !p_sys->b_update )
374 if( p_sys->i_last_page != i_wanted_page )
376 /* We need to reset the subtitle */
377 p_spu = Subpicture( p_dec, &fmt, true,
378 p_page.columns, p_page.rows,
379 i_align, p_block->i_pts );
382 p_spu->p_region->psz_text = strdup("");
384 p_sys->b_update = true;
385 p_sys->i_last_page = i_wanted_page;
391 p_sys->b_update = false;
392 p_sys->i_last_page = i_wanted_page;
394 msg_Dbg( p_dec, "we now have page: %d ready for display",
398 /* Ignore transparent rows at the beginning and end */
399 int i_first_row = get_first_visible_row( p_page.text, p_page.rows, p_page.columns );
400 if ( i_first_row < 0 )
402 int i_num_rows = get_last_visible_row( p_page.text, p_page.rows, p_page.columns ) - i_first_row + 1;
404 msg_Dbg( p_dec, "After top and tail of page we have rows %i-%i of %i",
405 i_first_row + 1, i_first_row + i_num_rows, p_page.rows );
408 /* If there is a page or sub to render, then we do that here */
409 /* Create the subpicture unit */
410 p_spu = Subpicture( p_dec, &fmt, p_sys->b_text,
411 p_page.columns, i_num_rows,
412 i_align, p_block->i_pts );
418 unsigned int i_textsize = 7000;
420 char p_text[i_textsize+1];
422 i_total = vbi_print_page_region( &p_page, p_text, i_textsize,
423 "UTF-8", 0, 0, 0, i_first_row, p_page.columns, i_num_rows );
425 for( offset=1; offset<i_total && isspace( p_text[i_total-offset ] ); offset++)
426 p_text[i_total-offset] = '\0';
431 while( offset < i_total && isspace( p_text[offset] ) )
434 p_spu->p_region->psz_text = strdup( &p_text[offset] );
436 msg_Info( p_dec, "page %x-%x(%d)\n\"%s\"", p_page.pgno, p_page.subno, i_total, &p_text[offset] );
441 picture_t *p_pic = p_spu->p_region->p_picture;
443 /* ZVBI is stupid enough to assume pitch == width */
444 p_pic->p->i_pitch = 4 * fmt.i_width;
446 /* Maintain subtitle postion */
447 p_spu->p_region->i_y = i_first_row*10;
448 p_spu->i_original_picture_width = p_page.columns*12;
449 p_spu->i_original_picture_height = p_page.rows*10;
451 vbi_draw_vt_page_region( &p_page, ZVBI_PIXFMT_RGBA32,
452 p_spu->p_region->p_picture->p->p_pixels, -1,
453 0, i_first_row, p_page.columns, i_num_rows,
456 vlc_mutex_lock( &p_sys->lock );
457 memcpy( p_sys->nav_link, &p_page.nav_link, sizeof( p_sys->nav_link )) ;
458 vlc_mutex_unlock( &p_sys->lock );
460 OpaquePage( p_pic, &p_page, fmt, b_opaque, i_first_row * p_page.columns );
464 vbi_unref_page( &p_page );
465 block_Release( p_block );
469 vbi_unref_page( &p_page );
472 decoder_DeleteSubpicture( p_dec, p_spu );
476 block_Release( p_block );
480 static subpicture_t *Subpicture( decoder_t *p_dec, video_format_t *p_fmt,
482 int i_columns, int i_rows, int i_align,
488 /* If there is a page or sub to render, then we do that here */
489 /* Create the subpicture unit */
490 p_spu = decoder_NewSubpicture( p_dec, NULL );
493 msg_Warn( p_dec, "can't get spu buffer" );
497 memset( &fmt, 0, sizeof(video_format_t) );
498 fmt.i_chroma = b_text ? VLC_CODEC_TEXT : VLC_CODEC_RGBA;
503 fmt.i_bits_per_pixel = 0;
507 fmt.i_width = fmt.i_visible_width = i_columns * 12;
508 fmt.i_height = fmt.i_visible_height = i_rows * 10;
509 fmt.i_bits_per_pixel = 32;
511 fmt.i_x_offset = fmt.i_y_offset = 0;
513 p_spu->p_region = subpicture_region_New( &fmt );
514 if( p_spu->p_region == NULL )
516 msg_Err( p_dec, "cannot allocate SPU region" );
517 decoder_DeleteSubpicture( p_dec, p_spu );
521 p_spu->p_region->i_x = 0;
522 p_spu->p_region->i_y = 0;
524 p_spu->i_start = i_pts;
525 p_spu->i_stop = i_pts + 10000000;
526 p_spu->b_ephemer = true;
527 p_spu->b_absolute = b_text ? false : true;
528 p_spu->p_region->i_align = i_align;
532 p_spu->i_original_picture_width = fmt.i_width;
533 p_spu->i_original_picture_height = fmt.i_height;
541 static void EventHandler( vbi_event *ev, void *user_data )
543 decoder_t *p_dec = (decoder_t *)user_data;
544 decoder_sys_t *p_sys = p_dec->p_sys;
546 if( ev->type == VBI_EVENT_TTX_PAGE )
549 msg_Info( p_dec, "Page %03x.%02x ",
550 ev->ev.ttx_page.pgno,
551 ev->ev.ttx_page.subno & 0xFF);
553 if( p_sys->i_last_page == vbi_bcd2dec( ev->ev.ttx_page.pgno ) )
554 p_sys->b_update = true;
556 if( ev->ev.ttx_page.clock_update )
557 msg_Dbg( p_dec, "clock" );
558 if( ev->ev.ttx_page.header_update )
559 msg_Dbg( p_dec, "header" );
562 else if( ev->type == VBI_EVENT_CLOSE )
563 msg_Dbg( p_dec, "Close event" );
564 else if( ev->type == VBI_EVENT_CAPTION )
565 msg_Dbg( p_dec, "Caption line: %x", ev->ev.caption.pgno );
566 else if( ev->type == VBI_EVENT_NETWORK )
568 msg_Dbg( p_dec, "Network change");
569 vbi_network n = ev->ev.network;
570 msg_Dbg( p_dec, "Network id:%d name: %s, call: %s ", n.nuid, n.name, n.call );
572 else if( ev->type == VBI_EVENT_TRIGGER )
573 msg_Dbg( p_dec, "Trigger event" );
574 else if( ev->type == VBI_EVENT_ASPECT )
575 msg_Dbg( p_dec, "Aspect update" );
576 else if( ev->type == VBI_EVENT_PROG_INFO )
577 msg_Dbg( p_dec, "Program info received" );
578 else if( ev->type == VBI_EVENT_NETWORK_ID )
579 msg_Dbg( p_dec, "Network ID changed" );
582 static int get_first_visible_row( vbi_char *p_text, int rows, int columns)
584 for ( int i = 0; i < rows * columns; i++ )
586 if ( p_text[i].opacity != VBI_TRANSPARENT_SPACE )
595 static int get_last_visible_row( vbi_char *p_text, int rows, int columns)
597 for ( int i = rows * columns - 1; i >= 0; i-- )
599 if (p_text[i].opacity != VBI_TRANSPARENT_SPACE)
601 return ( i + columns - 1) / columns;
608 static int OpaquePage( picture_t *p_src, const vbi_page *p_page,
609 const video_format_t fmt, bool b_opaque, const int text_offset )
613 assert( fmt.i_chroma == VLC_CODEC_RGBA );
615 /* Kludge since zvbi doesn't provide an option to specify opacity. */
616 for( y = 0; y < fmt.i_height; y++ )
618 for( x = 0; x < fmt.i_width; x++ )
620 const vbi_opacity opacity = p_page->text[ text_offset + y/10 * p_page->columns + x/12 ].opacity;
621 const int background = p_page->text[ text_offset + y/10 * p_page->columns + x/12 ].background;
622 uint32_t *p_pixel = (uint32_t*)&p_src->p->p_pixels[y * p_src->p->i_pitch + 4*x];
626 /* Show video instead of this character */
627 case VBI_TRANSPARENT_SPACE:
630 /* Display foreground and background color */
631 /* To make the boxed text "closed captioning" transparent
632 * change true to false.
635 /* alpha blend video into background color */
636 case VBI_SEMI_TRANSPARENT:
639 /* Full text transparency. only foreground color is show */
640 case VBI_TRANSPARENT_FULL:
641 if( (*p_pixel) == (0xff000000 | p_page->color_map[background] ) )
652 static int RequestPage( vlc_object_t *p_this, char const *psz_cmd,
653 vlc_value_t oldval, vlc_value_t newval, void *p_data )
655 decoder_sys_t *p_sys = p_data;
656 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
658 vlc_mutex_lock( &p_sys->lock );
659 switch( newval.i_int )
662 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[0].pgno );
663 p_sys->i_wanted_subpage = p_sys->nav_link[0].subno;
666 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[1].pgno );
667 p_sys->i_wanted_subpage = p_sys->nav_link[1].subno;
669 case ZVBI_KEY_YELLOW:
670 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[2].pgno );
671 p_sys->i_wanted_subpage = p_sys->nav_link[2].subno;
674 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[3].pgno );
675 p_sys->i_wanted_subpage = p_sys->nav_link[3].subno;
678 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[5].pgno ); /* #4 is SKIPPED */
679 p_sys->i_wanted_subpage = p_sys->nav_link[5].subno;
682 if( newval.i_int > 0 && newval.i_int < 999 )
684 p_sys->i_wanted_page = newval.i_int;
685 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
687 vlc_mutex_unlock( &p_sys->lock );
692 static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
693 vlc_value_t oldval, vlc_value_t newval, void *p_data )
695 decoder_sys_t *p_sys = p_data;
696 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
698 vlc_mutex_lock( &p_sys->lock );
699 p_sys->b_opaque = newval.b_bool;
700 p_sys->b_update = true;
701 vlc_mutex_unlock( &p_sys->lock );
706 static int Position( vlc_object_t *p_this, char const *psz_cmd,
707 vlc_value_t oldval, vlc_value_t newval, void *p_data )
709 decoder_sys_t *p_sys = p_data;
710 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
712 vlc_mutex_lock( &p_sys->lock );
713 p_sys->i_align = newval.i_int;
714 vlc_mutex_unlock( &p_sys->lock );
719 static int EventKey( vlc_object_t *p_this, char const *psz_cmd,
720 vlc_value_t oldval, vlc_value_t newval, void *p_data )
722 decoder_t *p_dec = p_data;
723 decoder_sys_t *p_sys = p_dec->p_sys;
725 VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED( p_this );
727 /* FIXME: Capture + and - key for subpage browsing */
728 if( newval.i_int == '-' || newval.i_int == '+' )
730 vlc_mutex_lock( &p_sys->lock );
731 if( p_sys->i_wanted_subpage == VBI_ANY_SUBNO && newval.i_int == '+' )
732 p_sys->i_wanted_subpage = vbi_dec2bcd(1);
733 else if ( newval.i_int == '+' )
734 p_sys->i_wanted_subpage = vbi_add_bcd( p_sys->i_wanted_subpage, 1);
735 else if( newval.i_int == '-')
736 p_sys->i_wanted_subpage = vbi_add_bcd( p_sys->i_wanted_subpage, 0xF9999999); /* BCD complement - 1 */
738 if ( !vbi_bcd_digits_greater( p_sys->i_wanted_subpage, 0x00 ) || vbi_bcd_digits_greater( p_sys->i_wanted_subpage, 0x99 ) )
739 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
741 msg_Info( p_dec, "subpage: %d",
742 vbi_bcd2dec( p_sys->i_wanted_subpage) );
744 p_sys->b_update = true;
745 vlc_mutex_unlock( &p_sys->lock );
748 /* Capture 0-9 for page selection */
749 if( newval.i_int < '0' || newval.i_int > '9' )
752 vlc_mutex_lock( &p_sys->lock );
753 p_sys->i_key[0] = p_sys->i_key[1];
754 p_sys->i_key[1] = p_sys->i_key[2];
755 p_sys->i_key[2] = (int)(newval.i_int - '0');
756 msg_Info( p_dec, "page: %c%c%c", (char)(p_sys->i_key[0]+'0'),
757 (char)(p_sys->i_key[1]+'0'), (char)(p_sys->i_key[2]+'0') );
761 if( p_sys->i_key[0] > 0 && p_sys->i_key[0] <= 8 &&
762 p_sys->i_key[1] >= 0 && p_sys->i_key[1] <= 9 &&
763 p_sys->i_key[2] >= 0 && p_sys->i_key[2] <= 9 )
765 i_new_page = p_sys->i_key[0]*100 + p_sys->i_key[1]*10 + p_sys->i_key[2];
766 p_sys->i_key[0] = p_sys->i_key[1] = p_sys->i_key[2] = '*' - '0';
768 vlc_mutex_unlock( &p_sys->lock );
771 var_SetInteger( p_dec, "vbi-page", i_new_page );