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>
55 /*****************************************************************************
57 *****************************************************************************/
58 static int Open ( vlc_object_t * );
59 static void Close( vlc_object_t * );
61 #define PAGE_TEXT N_("Teletext page")
62 #define PAGE_LONGTEXT N_("Open the indicated Teletext page." \
63 "Default page is index 100")
65 #define OPAQUE_TEXT N_("Teletext transparency")
66 #define OPAQUE_LONGTEXT N_("Setting vbi-opaque to true " \
67 "makes the text to be boxed and maybe easier to read." )
69 #define POS_TEXT N_("Teletext alignment")
70 #define POS_LONGTEXT N_( \
71 "You can enforce the teletext position on the video " \
72 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
73 "also use combinations of these values, eg. 6 = top-right).")
75 #define TELX_TEXT N_("Teletext text subtitles")
76 #define TELX_LONGTEXT N_( "Output teletext subtitles as text " \
77 "instead of as RGBA" )
79 static const int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
80 static const char *const ppsz_pos_descriptions[] =
81 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
82 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
85 set_description( N_("VBI and Teletext decoder") )
86 set_shortname( N_("VBI & Teletext") )
87 set_capability( "decoder", 51 )
88 set_category( CAT_INPUT )
89 set_subcategory( SUBCAT_INPUT_SCODEC )
90 set_callbacks( Open, Close )
92 add_integer( "vbi-page", 100,
93 PAGE_TEXT, PAGE_LONGTEXT, false )
94 add_bool( "vbi-opaque", false,
95 OPAQUE_TEXT, OPAQUE_LONGTEXT, false )
96 add_integer( "vbi-position", 8, POS_TEXT, POS_LONGTEXT, false )
97 change_integer_list( pi_pos_values, ppsz_pos_descriptions );
98 add_bool( "vbi-text", true,
99 TELX_TEXT, TELX_LONGTEXT, false )
102 /****************************************************************************
104 ****************************************************************************/
106 // #define ZVBI_DEBUG
108 //Guessing table for missing "default region triplet"
109 static const int pi_default_triplet[] = {
110 0, 0, 0, 0, // slo slk cze ces
112 24,24,24,24,24, //scc scr srp hrv slv
114 32,32,32,32,32, //est lit rus bul ukr
119 static const char *const ppsz_default_triplet[] = {
120 "slo", "slk", "cze", "ces",
122 "scc", "scr", "srp", "hrv", "slv",
124 "est", "lit", "rus", "bul", "ukr",
132 ZVBI_KEY_RED = 'r' << 16,
133 ZVBI_KEY_GREEN = 'g' << 16,
134 ZVBI_KEY_YELLOW = 'y' << 16,
135 ZVBI_KEY_BLUE = 'b' << 16,
136 ZVBI_KEY_INDEX = 'i' << 16,
139 #define MAX_SLICES 32
143 vbi_decoder * p_vbi_dec;
144 vbi_sliced p_vbi_sliced[MAX_SLICES];
145 unsigned int i_last_page;
147 bool b_text; /* Subtitles as text */
149 vlc_mutex_t lock; /* Lock to protect the following variables */
150 /* Positioning of Teletext images */
153 unsigned int i_wanted_page;
154 unsigned int i_wanted_subpage;
163 static subpicture_t *Decode( decoder_t *, block_t ** );
165 static subpicture_t *Subpicture( decoder_t *p_dec, video_format_t *p_fmt,
167 int i_columns, int i_rows,
168 int i_align, mtime_t i_pts );
170 static void EventHandler( vbi_event *ev, void *user_data );
171 static int OpaquePage( picture_t *p_src, const vbi_page *p_page,
172 const video_format_t fmt, bool b_opaque, const int text_offset );
173 static int get_first_visible_row( vbi_char *p_text, int rows, int columns);
174 static int get_last_visible_row( vbi_char *p_text, int rows, int columns);
176 /* Properties callbacks */
177 static int RequestPage( vlc_object_t *p_this, char const *psz_cmd,
178 vlc_value_t oldval, vlc_value_t newval, void *p_data );
179 static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
180 vlc_value_t oldval, vlc_value_t newval, void *p_data );
181 static int Position( vlc_object_t *p_this, char const *psz_cmd,
182 vlc_value_t oldval, vlc_value_t newval, void *p_data );
183 static int EventKey( vlc_object_t *p_this, char const *psz_cmd,
184 vlc_value_t oldval, vlc_value_t newval, void *p_data );
186 /*****************************************************************************
187 * Open: probe the decoder and return score
188 *****************************************************************************
189 * Tries to launch a decoder and return score so that the interface is able
191 *****************************************************************************/
192 static int Open( vlc_object_t *p_this )
194 decoder_t *p_dec = (decoder_t *) p_this;
195 decoder_sys_t *p_sys = NULL;
197 if( p_dec->fmt_in.i_codec != VLC_CODEC_TELETEXT )
200 p_sys = p_dec->p_sys = calloc( 1, sizeof(decoder_sys_t) );
204 p_sys->i_key[0] = p_sys->i_key[1] = p_sys->i_key[2] = '*' - '0';
205 p_sys->b_update = false;
206 p_sys->p_vbi_dec = vbi_decoder_new();
207 vlc_mutex_init( &p_sys->lock );
209 if( p_sys->p_vbi_dec == NULL )
211 msg_Err( p_dec, "VBI decoder could not be created." );
216 /* Some broadcasters in countries with level 1 and level 1.5 still not send a G0 to do
217 * matches against table 32 of ETSI 300 706. We try to do some best effort guessing
218 * This is not perfect, but might handle some cases where we know the vbi language
219 * is known. It would be better if people started sending G0 */
220 for( int i = 0; ppsz_default_triplet[i] != NULL; i++ )
222 if( p_dec->fmt_in.psz_language && !strcasecmp( p_dec->fmt_in.psz_language, ppsz_default_triplet[i] ) )
224 vbi_teletext_set_default_region( p_sys->p_vbi_dec, pi_default_triplet[i]);
225 msg_Dbg( p_dec, "overwriting default zvbi region: %d", pi_default_triplet[i] );
229 vbi_event_handler_register( p_sys->p_vbi_dec, VBI_EVENT_TTX_PAGE | VBI_EVENT_NETWORK |
231 VBI_EVENT_CAPTION | VBI_EVENT_TRIGGER |
232 VBI_EVENT_ASPECT | VBI_EVENT_PROG_INFO | VBI_EVENT_NETWORK_ID |
234 0 , EventHandler, p_dec );
236 /* Create the var on vlc_global. */
237 p_sys->i_wanted_page = var_CreateGetInteger( p_dec, "vbi-page" );
238 var_AddCallback( p_dec, "vbi-page", RequestPage, p_sys );
240 /* Check if the Teletext track has a known "initial page". */
241 if( p_sys->i_wanted_page == 100 && p_dec->fmt_in.subs.teletext.i_magazine != -1 )
243 p_sys->i_wanted_page = 100 * p_dec->fmt_in.subs.teletext.i_magazine +
244 vbi_bcd2dec( p_dec->fmt_in.subs.teletext.i_page );
245 var_SetInteger( p_dec, "vbi-page", p_sys->i_wanted_page );
247 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
249 p_sys->b_opaque = var_CreateGetBool( p_dec, "vbi-opaque" );
250 var_AddCallback( p_dec, "vbi-opaque", Opaque, p_sys );
252 p_sys->i_align = var_CreateGetInteger( p_dec, "vbi-position" );
253 var_AddCallback( p_dec, "vbi-position", Position, p_sys );
255 p_sys->b_text = var_CreateGetBool( p_dec, "vbi-text" );
256 // var_AddCallback( p_dec, "vbi-text", Text, p_sys );
258 /* Listen for keys */
259 var_AddCallback( p_dec->p_libvlc, "key-pressed", EventKey, p_dec );
261 es_format_Init( &p_dec->fmt_out, SPU_ES, VLC_CODEC_SPU );
263 p_dec->fmt_out.video.i_chroma = VLC_CODEC_TEXT;
265 p_dec->fmt_out.video.i_chroma = VLC_CODEC_RGBA;
267 p_dec->pf_decode_sub = Decode;
271 /*****************************************************************************
273 *****************************************************************************/
274 static void Close( vlc_object_t *p_this )
276 decoder_t *p_dec = (decoder_t*) p_this;
277 decoder_sys_t *p_sys = p_dec->p_sys;
279 var_DelCallback( p_dec, "vbi-position", Position, p_sys );
280 var_DelCallback( p_dec, "vbi-opaque", Opaque, p_sys );
281 var_DelCallback( p_dec, "vbi-page", RequestPage, p_sys );
282 var_DelCallback( p_dec->p_libvlc, "key-pressed", EventKey, p_dec );
284 vlc_mutex_destroy( &p_sys->lock );
286 if( p_sys->p_vbi_dec )
287 vbi_decoder_delete( p_sys->p_vbi_dec );
291 #ifdef WORDS_BIGENDIAN
292 # define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_BE
294 # define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_LE
297 /*****************************************************************************
299 *****************************************************************************/
300 static subpicture_t *Decode( decoder_t *p_dec, block_t **pp_block )
302 decoder_sys_t *p_sys = p_dec->p_sys;
304 subpicture_t *p_spu = NULL;
306 bool b_cached = false;
309 if( (pp_block == NULL) || (*pp_block == NULL) )
315 if( p_block->i_buffer > 0 &&
316 ( ( p_block->p_buffer[0] >= 0x10 && p_block->p_buffer[0] <= 0x1f ) ||
317 ( p_block->p_buffer[0] >= 0x99 && p_block->p_buffer[0] <= 0x9b ) ) )
319 vbi_sliced *p_sliced = p_sys->p_vbi_sliced;
320 unsigned int i_lines = 0;
324 while( p_block->i_buffer >= 2 )
326 int i_id = p_block->p_buffer[0];
327 unsigned i_size = p_block->p_buffer[1];
329 if( 2 + i_size > p_block->i_buffer )
332 if( ( i_id == 0x02 || i_id == 0x03 ) && i_size >= 44 && i_lines < MAX_SLICES )
334 unsigned line_offset = p_block->p_buffer[2] & 0x1f;
335 unsigned field_parity = p_block->p_buffer[2] & 0x20;
337 p_sliced[i_lines].id = VBI_SLICED_TELETEXT_B;
338 if( line_offset > 0 )
339 p_sliced[i_lines].line = line_offset + (field_parity ? 0 : 313);
341 p_sliced[i_lines].line = 0;
342 for( int i = 0; i < 42; i++ )
343 p_sliced[i_lines].data[i] = vbi_rev8( p_block->p_buffer[4 + i] );
347 p_block->i_buffer -= 2 + i_size;
348 p_block->p_buffer += 2 + i_size;
352 vbi_decode( p_sys->p_vbi_dec, p_sliced, i_lines, 0 );
356 vlc_mutex_lock( &p_sys->lock );
357 const int i_align = p_sys->i_align;
358 const unsigned int i_wanted_page = p_sys->i_wanted_page;
359 const unsigned int i_wanted_subpage = p_sys->i_wanted_subpage;
360 const bool b_opaque = p_sys->b_opaque;
361 vlc_mutex_unlock( &p_sys->lock );
363 /* Try to see if the page we want is in the cache yet */
364 memset( &p_page, 0, sizeof(vbi_page) );
365 b_cached = vbi_fetch_vt_page( p_sys->p_vbi_dec, &p_page,
366 vbi_dec2bcd( i_wanted_page ),
367 i_wanted_subpage, VBI_WST_LEVEL_3p5,
370 if( i_wanted_page == p_sys->i_last_page && !p_sys->b_update )
375 if( p_sys->i_last_page != i_wanted_page )
377 /* We need to reset the subtitle */
378 p_spu = Subpicture( p_dec, &fmt, true,
379 p_page.columns, p_page.rows,
380 i_align, p_block->i_pts );
383 subpicture_updater_sys_t *p_spu_sys = p_spu->updater.p_sys;
384 p_spu_sys->text = strdup("");
386 p_sys->b_update = true;
387 p_sys->i_last_page = i_wanted_page;
393 p_sys->b_update = false;
394 p_sys->i_last_page = i_wanted_page;
396 msg_Dbg( p_dec, "we now have page: %d ready for display",
400 /* Ignore transparent rows at the beginning and end */
401 int i_first_row = get_first_visible_row( p_page.text, p_page.rows, p_page.columns );
402 if ( i_first_row < 0 )
404 int i_num_rows = get_last_visible_row( p_page.text, p_page.rows, p_page.columns ) - i_first_row + 1;
406 msg_Dbg( p_dec, "After top and tail of page we have rows %i-%i of %i",
407 i_first_row + 1, i_first_row + i_num_rows, p_page.rows );
410 /* If there is a page or sub to render, then we do that here */
411 /* Create the subpicture unit */
412 p_spu = Subpicture( p_dec, &fmt, p_sys->b_text,
413 p_page.columns, i_num_rows,
414 i_align, p_block->i_pts );
420 unsigned int i_textsize = 7000;
422 char p_text[i_textsize+1];
424 i_total = vbi_print_page_region( &p_page, p_text, i_textsize,
425 "UTF-8", 0, 0, 0, i_first_row, p_page.columns, i_num_rows );
427 for( offset=1; offset<i_total && isspace( p_text[i_total-offset ] ); offset++)
428 p_text[i_total-offset] = '\0';
433 while( offset < i_total && isspace( p_text[offset] ) )
436 subpicture_updater_sys_t *p_spu_sys = p_spu->updater.p_sys;
437 p_spu_sys->text = strdup( &p_text[offset] );
439 p_spu_sys->align = i_align;
440 p_spu_sys->i_font_height_percent = 5;
441 p_spu_sys->renderbg = b_opaque;
444 msg_Info( p_dec, "page %x-%x(%d)\n\"%s\"", p_page.pgno, p_page.subno, i_total, &p_text[offset] );
449 picture_t *p_pic = p_spu->p_region->p_picture;
451 /* ZVBI is stupid enough to assume pitch == width */
452 p_pic->p->i_pitch = 4 * fmt.i_width;
454 /* Maintain subtitle postion */
455 p_spu->p_region->i_y = i_first_row*10;
456 p_spu->i_original_picture_width = p_page.columns*12;
457 p_spu->i_original_picture_height = p_page.rows*10;
459 vbi_draw_vt_page_region( &p_page, ZVBI_PIXFMT_RGBA32,
460 p_spu->p_region->p_picture->p->p_pixels, -1,
461 0, i_first_row, p_page.columns, i_num_rows,
464 vlc_mutex_lock( &p_sys->lock );
465 memcpy( p_sys->nav_link, &p_page.nav_link, sizeof( p_sys->nav_link )) ;
466 vlc_mutex_unlock( &p_sys->lock );
468 OpaquePage( p_pic, &p_page, fmt, b_opaque, i_first_row * p_page.columns );
472 vbi_unref_page( &p_page );
473 block_Release( p_block );
477 vbi_unref_page( &p_page );
480 decoder_DeleteSubpicture( p_dec, p_spu );
484 block_Release( p_block );
488 static subpicture_t *Subpicture( decoder_t *p_dec, video_format_t *p_fmt,
490 int i_columns, int i_rows, int i_align,
494 subpicture_t *p_spu=NULL;
496 /* If there is a page or sub to render, then we do that here */
497 /* Create the subpicture unit */
499 p_spu = decoder_NewSubpictureText( p_dec );
501 p_spu = decoder_NewSubpicture( p_dec, NULL );
504 msg_Warn( p_dec, "can't get spu buffer" );
508 memset( &fmt, 0, sizeof(video_format_t) );
509 fmt.i_chroma = b_text ? VLC_CODEC_TEXT : VLC_CODEC_RGBA;
514 fmt.i_bits_per_pixel = 0;
518 fmt.i_width = fmt.i_visible_width = i_columns * 12;
519 fmt.i_height = fmt.i_visible_height = i_rows * 10;
520 fmt.i_bits_per_pixel = 32;
522 fmt.i_x_offset = fmt.i_y_offset = 0;
524 p_spu->p_region = subpicture_region_New( &fmt );
525 if( p_spu->p_region == NULL )
527 msg_Err( p_dec, "cannot allocate SPU region" );
528 decoder_DeleteSubpicture( p_dec, p_spu );
532 p_spu->p_region->i_x = 0;
533 p_spu->p_region->i_y = 0;
535 p_spu->i_start = i_pts;
536 p_spu->i_stop = i_pts + 10000000;
537 p_spu->b_ephemer = true;
538 p_spu->b_absolute = b_text ? false : true;
541 p_spu->p_region->i_align = i_align;
542 p_spu->i_original_picture_width = fmt.i_width;
543 p_spu->i_original_picture_height = fmt.i_height;
550 static void EventHandler( vbi_event *ev, void *user_data )
552 decoder_t *p_dec = (decoder_t *)user_data;
553 decoder_sys_t *p_sys = p_dec->p_sys;
555 if( ev->type == VBI_EVENT_TTX_PAGE )
558 msg_Info( p_dec, "Page %03x.%02x ",
559 ev->ev.ttx_page.pgno,
560 ev->ev.ttx_page.subno & 0xFF);
562 if( p_sys->i_last_page == vbi_bcd2dec( ev->ev.ttx_page.pgno ) )
563 p_sys->b_update = true;
565 if( ev->ev.ttx_page.clock_update )
566 msg_Dbg( p_dec, "clock" );
567 if( ev->ev.ttx_page.header_update )
568 msg_Dbg( p_dec, "header" );
571 else if( ev->type == VBI_EVENT_CLOSE )
572 msg_Dbg( p_dec, "Close event" );
573 else if( ev->type == VBI_EVENT_CAPTION )
574 msg_Dbg( p_dec, "Caption line: %x", ev->ev.caption.pgno );
575 else if( ev->type == VBI_EVENT_NETWORK )
577 msg_Dbg( p_dec, "Network change");
578 vbi_network n = ev->ev.network;
579 msg_Dbg( p_dec, "Network id:%d name: %s, call: %s ", n.nuid, n.name, n.call );
581 else if( ev->type == VBI_EVENT_TRIGGER )
582 msg_Dbg( p_dec, "Trigger event" );
583 else if( ev->type == VBI_EVENT_ASPECT )
584 msg_Dbg( p_dec, "Aspect update" );
585 else if( ev->type == VBI_EVENT_PROG_INFO )
586 msg_Dbg( p_dec, "Program info received" );
587 else if( ev->type == VBI_EVENT_NETWORK_ID )
588 msg_Dbg( p_dec, "Network ID changed" );
591 static int get_first_visible_row( vbi_char *p_text, int rows, int columns)
593 for ( int i = 0; i < rows * columns; i++ )
595 if ( p_text[i].opacity != VBI_TRANSPARENT_SPACE )
604 static int get_last_visible_row( vbi_char *p_text, int rows, int columns)
606 for ( int i = rows * columns - 1; i >= 0; i-- )
608 if (p_text[i].opacity != VBI_TRANSPARENT_SPACE)
610 return ( i + columns - 1) / columns;
617 static int OpaquePage( picture_t *p_src, const vbi_page *p_page,
618 const video_format_t fmt, bool b_opaque, const int text_offset )
622 assert( fmt.i_chroma == VLC_CODEC_RGBA );
624 /* Kludge since zvbi doesn't provide an option to specify opacity. */
625 for( y = 0; y < fmt.i_height; y++ )
627 for( x = 0; x < fmt.i_width; x++ )
629 const vbi_opacity opacity = p_page->text[ text_offset + y/10 * p_page->columns + x/12 ].opacity;
630 const int background = p_page->text[ text_offset + y/10 * p_page->columns + x/12 ].background;
631 uint32_t *p_pixel = (uint32_t*)&p_src->p->p_pixels[y * p_src->p->i_pitch + 4*x];
635 /* Show video instead of this character */
636 case VBI_TRANSPARENT_SPACE:
639 /* Display foreground and background color */
640 /* To make the boxed text "closed captioning" transparent
641 * change true to false.
644 /* alpha blend video into background color */
645 case VBI_SEMI_TRANSPARENT:
648 /* Full text transparency. only foreground color is show */
649 case VBI_TRANSPARENT_FULL:
650 if( (*p_pixel) == (0xff000000 | p_page->color_map[background] ) )
661 static int RequestPage( vlc_object_t *p_this, char const *psz_cmd,
662 vlc_value_t oldval, vlc_value_t newval, void *p_data )
664 decoder_sys_t *p_sys = p_data;
665 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
667 vlc_mutex_lock( &p_sys->lock );
668 switch( newval.i_int )
671 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[0].pgno );
672 p_sys->i_wanted_subpage = p_sys->nav_link[0].subno;
675 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[1].pgno );
676 p_sys->i_wanted_subpage = p_sys->nav_link[1].subno;
678 case ZVBI_KEY_YELLOW:
679 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[2].pgno );
680 p_sys->i_wanted_subpage = p_sys->nav_link[2].subno;
683 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[3].pgno );
684 p_sys->i_wanted_subpage = p_sys->nav_link[3].subno;
687 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[5].pgno ); /* #4 is SKIPPED */
688 p_sys->i_wanted_subpage = p_sys->nav_link[5].subno;
691 if( newval.i_int > 0 && newval.i_int < 999 )
693 p_sys->i_wanted_page = newval.i_int;
694 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
696 vlc_mutex_unlock( &p_sys->lock );
701 static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
702 vlc_value_t oldval, vlc_value_t newval, void *p_data )
704 decoder_sys_t *p_sys = p_data;
705 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
707 vlc_mutex_lock( &p_sys->lock );
708 p_sys->b_opaque = newval.b_bool;
709 p_sys->b_update = true;
710 vlc_mutex_unlock( &p_sys->lock );
715 static int Position( vlc_object_t *p_this, char const *psz_cmd,
716 vlc_value_t oldval, vlc_value_t newval, void *p_data )
718 decoder_sys_t *p_sys = p_data;
719 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
721 vlc_mutex_lock( &p_sys->lock );
722 p_sys->i_align = newval.i_int;
723 vlc_mutex_unlock( &p_sys->lock );
728 static int EventKey( vlc_object_t *p_this, char const *psz_cmd,
729 vlc_value_t oldval, vlc_value_t newval, void *p_data )
731 decoder_t *p_dec = p_data;
732 decoder_sys_t *p_sys = p_dec->p_sys;
734 VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED( p_this );
736 /* FIXME: Capture + and - key for subpage browsing */
737 if( newval.i_int == '-' || newval.i_int == '+' )
739 vlc_mutex_lock( &p_sys->lock );
740 if( p_sys->i_wanted_subpage == VBI_ANY_SUBNO && newval.i_int == '+' )
741 p_sys->i_wanted_subpage = vbi_dec2bcd(1);
742 else if ( newval.i_int == '+' )
743 p_sys->i_wanted_subpage = vbi_add_bcd( p_sys->i_wanted_subpage, 1);
744 else if( newval.i_int == '-')
745 p_sys->i_wanted_subpage = vbi_add_bcd( p_sys->i_wanted_subpage, 0xF9999999); /* BCD complement - 1 */
747 if ( !vbi_bcd_digits_greater( p_sys->i_wanted_subpage, 0x00 ) || vbi_bcd_digits_greater( p_sys->i_wanted_subpage, 0x99 ) )
748 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
750 msg_Info( p_dec, "subpage: %d",
751 vbi_bcd2dec( p_sys->i_wanted_subpage) );
753 p_sys->b_update = true;
754 vlc_mutex_unlock( &p_sys->lock );
757 /* Capture 0-9 for page selection */
758 if( newval.i_int < '0' || newval.i_int > '9' )
761 vlc_mutex_lock( &p_sys->lock );
762 p_sys->i_key[0] = p_sys->i_key[1];
763 p_sys->i_key[1] = p_sys->i_key[2];
764 p_sys->i_key[2] = (int)(newval.i_int - '0');
765 msg_Info( p_dec, "page: %c%c%c", (char)(p_sys->i_key[0]+'0'),
766 (char)(p_sys->i_key[1]+'0'), (char)(p_sys->i_key[2]+'0') );
770 if( p_sys->i_key[0] > 0 && p_sys->i_key[0] <= 8 &&
771 p_sys->i_key[1] >= 0 && p_sys->i_key[1] <= 9 &&
772 p_sys->i_key[2] >= 0 && p_sys->i_key[2] <= 9 )
774 i_new_page = p_sys->i_key[0]*100 + p_sys->i_key[1]*10 + p_sys->i_key[2];
775 p_sys->i_key[0] = p_sys->i_key[1] = p_sys->i_key[2] = '*' - '0';
777 vlc_mutex_unlock( &p_sys->lock );
780 var_SetInteger( p_dec, "vbi-page", i_new_page );