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)
45 #include <vlc_common.h>
46 #include <vlc_plugin.h>
50 #include <vlc_codec.h>
52 /*****************************************************************************
54 *****************************************************************************/
55 static int Open ( vlc_object_t * );
56 static void Close( vlc_object_t * );
58 #define PAGE_TEXT N_("Teletext page")
59 #define PAGE_LONGTEXT N_("Open the indicated Teletext page." \
60 "Default page is index 100")
62 #define OPAQUE_TEXT N_("Teletext transparency")
63 #define OPAQUE_LONGTEXT N_("Setting vbi-opaque to false " \
64 "makes the boxed text transparent." )
66 #define POS_TEXT N_("Teletext alignment")
67 #define POS_LONGTEXT N_( \
68 "You can enforce the teletext position on the video " \
69 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
70 "also use combinations of these values, eg. 6 = top-right).")
72 #define TELX_TEXT N_("Teletext text subtitles")
73 #define TELX_LONGTEXT N_( "Output teletext subtitles as text " \
74 "instead of as RGBA" )
76 static const int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
77 static const char *const ppsz_pos_descriptions[] =
78 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
79 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
82 set_description( N_("VBI and Teletext decoder") )
83 set_shortname( N_("VBI & Teletext") )
84 set_capability( "decoder", 51 )
85 set_category( CAT_INPUT )
86 set_subcategory( SUBCAT_INPUT_SCODEC )
87 set_callbacks( Open, Close )
89 add_integer( "vbi-page", 100,
90 PAGE_TEXT, PAGE_LONGTEXT, false )
91 add_bool( "vbi-opaque", true,
92 OPAQUE_TEXT, OPAQUE_LONGTEXT, false )
93 add_integer( "vbi-position", 8, POS_TEXT, POS_LONGTEXT, false )
94 change_integer_list( pi_pos_values, ppsz_pos_descriptions );
95 add_bool( "vbi-text", false,
96 TELX_TEXT, TELX_LONGTEXT, false )
99 /****************************************************************************
101 ****************************************************************************/
103 // #define ZVBI_DEBUG
105 //Guessing table for missing "default region triplet"
106 static const int pi_default_triplet[] = {
107 0, 0, 0, 0, // slo slk cze ces
109 24,24,24,24,24, //scc scr srp hrv slv
111 32,32,32,32,32, //est lit rus bul ukr
116 static const char *const ppsz_default_triplet[] = {
117 "slo", "slk", "cze", "ces",
119 "scc", "scr", "srp", "hrv", "slv",
121 "est", "lit", "rus", "bul", "ukr",
129 ZVBI_KEY_RED = 'r' << 16,
130 ZVBI_KEY_GREEN = 'g' << 16,
131 ZVBI_KEY_YELLOW = 'y' << 16,
132 ZVBI_KEY_BLUE = 'b' << 16,
133 ZVBI_KEY_INDEX = 'i' << 16,
136 #define MAX_SLICES 32
140 vbi_decoder * p_vbi_dec;
141 vbi_sliced p_vbi_sliced[MAX_SLICES];
142 unsigned int i_last_page;
144 bool b_text; /* Subtitles as text */
146 vlc_mutex_t lock; /* Lock to protect the following variables */
147 /* Positioning of Teletext images */
150 unsigned int i_wanted_page;
151 unsigned int i_wanted_subpage;
160 static subpicture_t *Decode( decoder_t *, block_t ** );
162 static subpicture_t *Subpicture( decoder_t *p_dec, video_format_t *p_fmt,
164 int i_columns, int i_rows,
165 int i_align, mtime_t i_pts );
167 static void EventHandler( vbi_event *ev, void *user_data );
168 static int OpaquePage( picture_t *p_src, const vbi_page *p_page,
169 const video_format_t fmt, bool b_opaque, const int text_offset );
170 static int get_first_visible_row( vbi_char *p_text, int rows, int columns);
171 static int get_last_visible_row( vbi_char *p_text, int rows, int columns);
173 /* Properties callbacks */
174 static int RequestPage( vlc_object_t *p_this, char const *psz_cmd,
175 vlc_value_t oldval, vlc_value_t newval, void *p_data );
176 static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
177 vlc_value_t oldval, vlc_value_t newval, void *p_data );
178 static int Position( vlc_object_t *p_this, char const *psz_cmd,
179 vlc_value_t oldval, vlc_value_t newval, void *p_data );
180 static int EventKey( vlc_object_t *p_this, char const *psz_cmd,
181 vlc_value_t oldval, vlc_value_t newval, void *p_data );
183 /*****************************************************************************
184 * Open: probe the decoder and return score
185 *****************************************************************************
186 * Tries to launch a decoder and return score so that the interface is able
188 *****************************************************************************/
189 static int Open( vlc_object_t *p_this )
191 decoder_t *p_dec = (decoder_t *) p_this;
192 decoder_sys_t *p_sys = NULL;
194 if( p_dec->fmt_in.i_codec != VLC_CODEC_TELETEXT )
197 p_dec->pf_decode_sub = Decode;
198 p_sys = p_dec->p_sys = calloc( 1, sizeof(decoder_sys_t) );
202 p_sys->i_key[0] = p_sys->i_key[1] = p_sys->i_key[2] = '*' - '0';
203 p_sys->b_update = false;
204 p_sys->p_vbi_dec = vbi_decoder_new();
205 vlc_mutex_init( &p_sys->lock );
207 if( p_sys->p_vbi_dec == NULL )
209 msg_Err( p_dec, "VBI decoder could not be created." );
214 /* Some broadcasters in countries with level 1 and level 1.5 still not send a G0 to do
215 * matches against table 32 of ETSI 300 706. We try to do some best effort guessing
216 * This is not perfect, but might handle some cases where we know the vbi language
217 * is known. It would be better if people started sending G0 */
218 for( int i = 0; ppsz_default_triplet[i] != NULL; i++ )
220 if( p_dec->fmt_in.psz_language && !strcasecmp( p_dec->fmt_in.psz_language, ppsz_default_triplet[i] ) )
222 vbi_teletext_set_default_region( p_sys->p_vbi_dec, pi_default_triplet[i]);
223 msg_Dbg( p_dec, "overwriting default zvbi region: %d", pi_default_triplet[i] );
227 vbi_event_handler_register( p_sys->p_vbi_dec, VBI_EVENT_TTX_PAGE | VBI_EVENT_NETWORK |
229 VBI_EVENT_CAPTION | VBI_EVENT_TRIGGER |
230 VBI_EVENT_ASPECT | VBI_EVENT_PROG_INFO | VBI_EVENT_NETWORK_ID |
232 0 , EventHandler, p_dec );
234 /* Create the var on vlc_global. */
235 p_sys->i_wanted_page = var_CreateGetInteger( p_dec, "vbi-page" );
236 var_AddCallback( p_dec, "vbi-page", RequestPage, p_sys );
238 /* Check if the Teletext track has a known "initial page". */
239 if( p_sys->i_wanted_page == 100 && p_dec->fmt_in.subs.teletext.i_magazine != -1 )
241 p_sys->i_wanted_page = 100 * p_dec->fmt_in.subs.teletext.i_magazine +
242 vbi_bcd2dec( p_dec->fmt_in.subs.teletext.i_page );
243 var_SetInteger( p_dec, "vbi-page", p_sys->i_wanted_page );
245 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
247 p_sys->b_opaque = var_CreateGetBool( p_dec, "vbi-opaque" );
248 var_AddCallback( p_dec, "vbi-opaque", Opaque, p_sys );
250 p_sys->i_align = var_CreateGetInteger( p_dec, "vbi-position" );
251 var_AddCallback( p_dec, "vbi-position", Position, p_sys );
253 p_sys->b_text = var_CreateGetBool( p_dec, "vbi-text" );
254 // var_AddCallback( p_dec, "vbi-text", Text, p_sys );
256 /* Listen for keys */
257 var_AddCallback( p_dec->p_libvlc, "key-pressed", EventKey, p_dec );
259 es_format_Init( &p_dec->fmt_out, SPU_ES, VLC_CODEC_SPU );
261 p_dec->fmt_out.video.i_chroma = VLC_CODEC_TEXT;
263 p_dec->fmt_out.video.i_chroma = VLC_CODEC_RGBA;
267 /*****************************************************************************
269 *****************************************************************************/
270 static void Close( vlc_object_t *p_this )
272 decoder_t *p_dec = (decoder_t*) p_this;
273 decoder_sys_t *p_sys = p_dec->p_sys;
275 var_DelCallback( p_dec, "vbi-position", Position, p_sys );
276 var_DelCallback( p_dec, "vbi-opaque", Opaque, p_sys );
277 var_DelCallback( p_dec, "vbi-page", RequestPage, p_sys );
278 var_DelCallback( p_dec->p_libvlc, "key-pressed", EventKey, p_dec );
280 vlc_mutex_destroy( &p_sys->lock );
282 if( p_sys->p_vbi_dec )
283 vbi_decoder_delete( p_sys->p_vbi_dec );
287 #ifdef WORDS_BIGENDIAN
288 # define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_BE
290 # define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_LE
293 /*****************************************************************************
295 *****************************************************************************/
296 static subpicture_t *Decode( decoder_t *p_dec, block_t **pp_block )
298 decoder_sys_t *p_sys = p_dec->p_sys;
300 subpicture_t *p_spu = NULL;
302 bool b_cached = false;
305 if( (pp_block == NULL) || (*pp_block == NULL) )
311 if( p_block->i_buffer > 0 &&
312 ( ( p_block->p_buffer[0] >= 0x10 && p_block->p_buffer[0] <= 0x1f ) ||
313 ( p_block->p_buffer[0] >= 0x99 && p_block->p_buffer[0] <= 0x9b ) ) )
315 vbi_sliced *p_sliced = p_sys->p_vbi_sliced;
316 unsigned int i_lines = 0;
320 while( p_block->i_buffer >= 2 )
322 int i_id = p_block->p_buffer[0];
323 unsigned i_size = p_block->p_buffer[1];
325 if( 2 + i_size > p_block->i_buffer )
328 if( ( i_id == 0x02 || i_id == 0x03 ) && i_size >= 44 && i_lines < MAX_SLICES )
330 unsigned line_offset = p_block->p_buffer[2] & 0x1f;
331 unsigned field_parity = p_block->p_buffer[2] & 0x20;
333 p_sliced[i_lines].id = VBI_SLICED_TELETEXT_B;
334 if( line_offset > 0 )
335 p_sliced[i_lines].line = line_offset + (field_parity ? 0 : 313);
337 p_sliced[i_lines].line = 0;
338 for( int i = 0; i < 42; i++ )
339 p_sliced[i_lines].data[i] = vbi_rev8( p_block->p_buffer[4 + i] );
343 p_block->i_buffer -= 2 + i_size;
344 p_block->p_buffer += 2 + i_size;
348 vbi_decode( p_sys->p_vbi_dec, p_sliced, i_lines, 0 );
352 vlc_mutex_lock( &p_sys->lock );
353 const int i_align = p_sys->i_align;
354 const unsigned int i_wanted_page = p_sys->i_wanted_page;
355 const unsigned int i_wanted_subpage = p_sys->i_wanted_subpage;
356 const bool b_opaque = p_sys->b_opaque;
357 vlc_mutex_unlock( &p_sys->lock );
359 /* Try to see if the page we want is in the cache yet */
360 memset( &p_page, 0, sizeof(vbi_page) );
361 b_cached = vbi_fetch_vt_page( p_sys->p_vbi_dec, &p_page,
362 vbi_dec2bcd( i_wanted_page ),
363 i_wanted_subpage, VBI_WST_LEVEL_3p5,
366 if( i_wanted_page == p_sys->i_last_page && !p_sys->b_update )
371 if( p_sys->i_last_page != i_wanted_page )
373 /* We need to reset the subtitle */
374 p_spu = Subpicture( p_dec, &fmt, true,
375 p_page.columns, p_page.rows,
376 i_align, p_block->i_pts );
379 p_spu->p_region->psz_text = strdup("");
381 p_sys->b_update = true;
382 p_sys->i_last_page = i_wanted_page;
388 p_sys->b_update = false;
389 p_sys->i_last_page = i_wanted_page;
391 msg_Dbg( p_dec, "we now have page: %d ready for display",
395 /* Ignore transparent rows at the beginning and end */
396 int i_first_row = get_first_visible_row( p_page.text, p_page.rows, p_page.columns );
397 if ( i_first_row < 0 )
399 int i_num_rows = get_last_visible_row( p_page.text, p_page.rows, p_page.columns ) - i_first_row + 1;
401 msg_Dbg( p_dec, "After top and tail of page we have rows %i-%i of %i",
402 i_first_row + 1, i_first_row + i_num_rows, p_page.rows );
405 /* If there is a page or sub to render, then we do that here */
406 /* Create the subpicture unit */
407 p_spu = Subpicture( p_dec, &fmt, p_sys->b_text,
408 p_page.columns, i_num_rows,
409 i_align, p_block->i_pts );
415 unsigned int i_textsize = 7000;
417 char p_text[i_textsize+1];
419 i_total = vbi_print_page_region( &p_page, p_text, i_textsize,
420 "UTF-8", 0, 0, 0, i_first_row, p_page.columns, i_num_rows );
421 p_text[i_total] = '\0';
422 p_spu->p_region->psz_text = strdup( p_text );
424 msg_Info( p_dec, "page %x-%x(%d)\n%s", p_page.pgno, p_page.subno, i_total, p_text );
429 picture_t *p_pic = p_spu->p_region->p_picture;
431 /* ZVBI is stupid enough to assume pitch == width */
432 p_pic->p->i_pitch = 4 * fmt.i_width;
434 /* Maintain subtitle postion */
435 p_spu->p_region->i_y = i_first_row*10;
436 p_spu->i_original_picture_width = p_page.columns*12;
437 p_spu->i_original_picture_height = p_page.rows*10;
439 vbi_draw_vt_page_region( &p_page, ZVBI_PIXFMT_RGBA32,
440 p_spu->p_region->p_picture->p->p_pixels, -1,
441 0, i_first_row, p_page.columns, i_num_rows,
444 vlc_mutex_lock( &p_sys->lock );
445 memcpy( p_sys->nav_link, &p_page.nav_link, sizeof( p_sys->nav_link )) ;
446 vlc_mutex_unlock( &p_sys->lock );
448 OpaquePage( p_pic, &p_page, fmt, b_opaque, i_first_row * p_page.columns );
452 vbi_unref_page( &p_page );
453 block_Release( p_block );
457 vbi_unref_page( &p_page );
460 decoder_DeleteSubpicture( p_dec, p_spu );
464 block_Release( p_block );
468 static subpicture_t *Subpicture( decoder_t *p_dec, video_format_t *p_fmt,
470 int i_columns, int i_rows, int i_align,
476 /* If there is a page or sub to render, then we do that here */
477 /* Create the subpicture unit */
478 p_spu = decoder_NewSubpicture( p_dec, NULL );
481 msg_Warn( p_dec, "can't get spu buffer" );
485 memset( &fmt, 0, sizeof(video_format_t) );
486 fmt.i_chroma = b_text ? VLC_CODEC_TEXT : VLC_CODEC_RGBA;
491 fmt.i_bits_per_pixel = 0;
495 fmt.i_width = fmt.i_visible_width = i_columns * 12;
496 fmt.i_height = fmt.i_visible_height = i_rows * 10;
497 fmt.i_bits_per_pixel = 32;
499 fmt.i_x_offset = fmt.i_y_offset = 0;
501 p_spu->p_region = subpicture_region_New( &fmt );
502 if( p_spu->p_region == NULL )
504 msg_Err( p_dec, "cannot allocate SPU region" );
505 decoder_DeleteSubpicture( p_dec, p_spu );
509 p_spu->p_region->i_x = 0;
510 p_spu->p_region->i_y = 0;
511 p_spu->p_region->i_align = i_align;
513 p_spu->i_start = i_pts;
515 p_spu->b_ephemer = true;
516 p_spu->b_absolute = true;
520 p_spu->i_original_picture_width = fmt.i_width;
521 p_spu->i_original_picture_height = fmt.i_height;
529 static void EventHandler( vbi_event *ev, void *user_data )
531 decoder_t *p_dec = (decoder_t *)user_data;
532 decoder_sys_t *p_sys = p_dec->p_sys;
534 if( ev->type == VBI_EVENT_TTX_PAGE )
537 msg_Info( p_dec, "Page %03x.%02x ",
538 ev->ev.ttx_page.pgno,
539 ev->ev.ttx_page.subno & 0xFF);
541 if( p_sys->i_last_page == vbi_bcd2dec( ev->ev.ttx_page.pgno ) )
542 p_sys->b_update = true;
544 if( ev->ev.ttx_page.clock_update )
545 msg_Dbg( p_dec, "clock" );
546 if( ev->ev.ttx_page.header_update )
547 msg_Dbg( p_dec, "header" );
550 else if( ev->type == VBI_EVENT_CLOSE )
551 msg_Dbg( p_dec, "Close event" );
552 else if( ev->type == VBI_EVENT_CAPTION )
553 msg_Dbg( p_dec, "Caption line: %x", ev->ev.caption.pgno );
554 else if( ev->type == VBI_EVENT_NETWORK )
556 msg_Dbg( p_dec, "Network change");
557 vbi_network n = ev->ev.network;
558 msg_Dbg( p_dec, "Network id:%d name: %s, call: %s ", n.nuid, n.name, n.call );
560 else if( ev->type == VBI_EVENT_TRIGGER )
561 msg_Dbg( p_dec, "Trigger event" );
562 else if( ev->type == VBI_EVENT_ASPECT )
563 msg_Dbg( p_dec, "Aspect update" );
564 else if( ev->type == VBI_EVENT_PROG_INFO )
565 msg_Dbg( p_dec, "Program info received" );
566 else if( ev->type == VBI_EVENT_NETWORK_ID )
567 msg_Dbg( p_dec, "Network ID changed" );
570 static int get_first_visible_row( vbi_char *p_text, int rows, int columns)
572 for ( int i = 0; i < rows * columns; i++ )
574 if ( p_text[i].opacity != VBI_TRANSPARENT_SPACE )
583 static int get_last_visible_row( vbi_char *p_text, int rows, int columns)
585 for ( int i = rows * columns - 1; i >= 0; i-- )
587 if (p_text[i].opacity != VBI_TRANSPARENT_SPACE)
589 return ( i + columns - 1) / columns;
596 static int OpaquePage( picture_t *p_src, const vbi_page *p_page,
597 const video_format_t fmt, bool b_opaque, const int text_offset )
601 assert( fmt.i_chroma == VLC_CODEC_RGBA );
603 /* Kludge since zvbi doesn't provide an option to specify opacity. */
604 for( y = 0; y < fmt.i_height; y++ )
606 for( x = 0; x < fmt.i_width; x++ )
608 const vbi_opacity opacity = p_page->text[ text_offset + y/10 * p_page->columns + x/12 ].opacity;
609 const int background = p_page->text[ text_offset + y/10 * p_page->columns + x/12 ].background;
610 uint32_t *p_pixel = (uint32_t*)&p_src->p->p_pixels[y * p_src->p->i_pitch + 4*x];
614 /* Show video instead of this character */
615 case VBI_TRANSPARENT_SPACE:
618 /* Display foreground and background color */
619 /* To make the boxed text "closed captioning" transparent
620 * change true to false.
623 /* alpha blend video into background color */
624 case VBI_SEMI_TRANSPARENT:
627 /* Full text transparency. only foreground color is show */
628 case VBI_TRANSPARENT_FULL:
629 if( (*p_pixel) == (0xff000000 | p_page->color_map[background] ) )
640 static int RequestPage( vlc_object_t *p_this, char const *psz_cmd,
641 vlc_value_t oldval, vlc_value_t newval, void *p_data )
643 decoder_sys_t *p_sys = p_data;
644 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
646 vlc_mutex_lock( &p_sys->lock );
647 switch( newval.i_int )
650 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[0].pgno );
651 p_sys->i_wanted_subpage = p_sys->nav_link[0].subno;
654 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[1].pgno );
655 p_sys->i_wanted_subpage = p_sys->nav_link[1].subno;
657 case ZVBI_KEY_YELLOW:
658 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[2].pgno );
659 p_sys->i_wanted_subpage = p_sys->nav_link[2].subno;
662 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[3].pgno );
663 p_sys->i_wanted_subpage = p_sys->nav_link[3].subno;
666 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[5].pgno ); /* #4 is SKIPPED */
667 p_sys->i_wanted_subpage = p_sys->nav_link[5].subno;
670 if( newval.i_int > 0 && newval.i_int < 999 )
672 p_sys->i_wanted_page = newval.i_int;
673 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
675 vlc_mutex_unlock( &p_sys->lock );
680 static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
681 vlc_value_t oldval, vlc_value_t newval, void *p_data )
683 decoder_sys_t *p_sys = p_data;
684 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
686 vlc_mutex_lock( &p_sys->lock );
687 p_sys->b_opaque = newval.b_bool;
688 p_sys->b_update = true;
689 vlc_mutex_unlock( &p_sys->lock );
694 static int Position( vlc_object_t *p_this, char const *psz_cmd,
695 vlc_value_t oldval, vlc_value_t newval, void *p_data )
697 decoder_sys_t *p_sys = p_data;
698 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
700 vlc_mutex_lock( &p_sys->lock );
701 p_sys->i_align = newval.i_int;
702 vlc_mutex_unlock( &p_sys->lock );
707 static int EventKey( vlc_object_t *p_this, char const *psz_cmd,
708 vlc_value_t oldval, vlc_value_t newval, void *p_data )
710 decoder_t *p_dec = p_data;
711 decoder_sys_t *p_sys = p_dec->p_sys;
713 VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED( p_this );
715 /* FIXME: Capture + and - key for subpage browsing */
716 if( newval.i_int == '-' || newval.i_int == '+' )
718 vlc_mutex_lock( &p_sys->lock );
719 if( p_sys->i_wanted_subpage == VBI_ANY_SUBNO && newval.i_int == '+' )
720 p_sys->i_wanted_subpage = vbi_dec2bcd(1);
721 else if ( newval.i_int == '+' )
722 p_sys->i_wanted_subpage = vbi_add_bcd( p_sys->i_wanted_subpage, 1);
723 else if( newval.i_int == '-')
724 p_sys->i_wanted_subpage = vbi_add_bcd( p_sys->i_wanted_subpage, 0xF9999999); /* BCD complement - 1 */
726 if ( !vbi_bcd_digits_greater( p_sys->i_wanted_subpage, 0x00 ) || vbi_bcd_digits_greater( p_sys->i_wanted_subpage, 0x99 ) )
727 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
729 msg_Info( p_dec, "subpage: %d",
730 vbi_bcd2dec( p_sys->i_wanted_subpage) );
732 p_sys->b_update = true;
733 vlc_mutex_unlock( &p_sys->lock );
736 /* Capture 0-9 for page selection */
737 if( newval.i_int < '0' || newval.i_int > '9' )
740 vlc_mutex_lock( &p_sys->lock );
741 p_sys->i_key[0] = p_sys->i_key[1];
742 p_sys->i_key[1] = p_sys->i_key[2];
743 p_sys->i_key[2] = (int)(newval.i_int - '0');
744 msg_Info( p_dec, "page: %c%c%c", (char)(p_sys->i_key[0]+'0'),
745 (char)(p_sys->i_key[1]+'0'), (char)(p_sys->i_key[2]+'0') );
749 if( p_sys->i_key[0] > 0 && p_sys->i_key[0] <= 8 &&
750 p_sys->i_key[1] >= 0 && p_sys->i_key[1] <= 9 &&
751 p_sys->i_key[2] >= 0 && p_sys->i_key[2] <= 9 )
753 i_new_page = p_sys->i_key[0]*100 + p_sys->i_key[1]*10 + p_sys->i_key[2];
754 p_sys->i_key[0] = p_sys->i_key[1] = p_sys->i_key[2] = '*' - '0';
756 vlc_mutex_unlock( &p_sys->lock );
759 var_SetInteger( p_dec, "vbi-page", i_new_page );