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Fix heap corruption
[vlc/asuraparaju-public.git] / modules / codec / zvbi.c
blob4c7ecc7e2809bcd6d94c2cc48a0893a4b7c1fea8
1 /*****************************************************************************
2 * zvbi.c : VBI and Teletext PES demux and decoder using libzvbi
3 *****************************************************************************
4 * Copyright (C) 2007, M2X
5 * $Id$
6 *
7 * Authors: Derk-Jan Hartman <djhartman at m2x dot nl>
8 * Jean-Paul Saman <jpsaman at m2x dot nl>
9 *
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.
14 *
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.
19 *
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 /*****************************************************************************
25 *
26 * information on teletext format can be found here :
27 * http://pdc.ro.nu/teletext.html
28 *
29 *****************************************************************************/
30
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)
38 */
39
40 #ifdef HAVE_CONFIG_H
41 # include "config.h"
42 #endif
43
44 #include <vlc_common.h>
45 #include <vlc_plugin.h>
46 #include <assert.h>
47 #include <libzvbi.h>
48
49 #include <vlc_codec.h>
50 #include <vlc_vout_osd.h>
51
52 /*****************************************************************************
53 * Module descriptor.
54 *****************************************************************************/
55 static int Open ( vlc_object_t * );
56 static void Close( vlc_object_t * );
57
58 #define PAGE_TEXT N_("Teletext page")
59 #define PAGE_LONGTEXT N_("Open the indicated Teletext page." \
60 "Default page is index 100")
61
62 #define OPAQUE_TEXT N_("Text is always opaque")
63 #define OPAQUE_LONGTEXT N_("Setting vbi-opaque to false " \
64 "makes the boxed text transparent." )
65
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).")
71
72 #define TELX_TEXT N_("Teletext text subtitles")
73 #define TELX_LONGTEXT N_( "Output teletext subtitles as text " \
74 "instead of as RGBA" )
75
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") };
80
81 vlc_module_begin ()
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 )
88
89 add_integer( "vbi-page", 100, NULL,
90 PAGE_TEXT, PAGE_LONGTEXT, false )
91 add_bool( "vbi-opaque", true, NULL,
92 OPAQUE_TEXT, OPAQUE_LONGTEXT, false )
93 add_integer( "vbi-position", 4, NULL, POS_TEXT, POS_LONGTEXT, false )
94 change_integer_list( pi_pos_values, ppsz_pos_descriptions, NULL );
95 add_bool( "vbi-text", false, NULL,
96 TELX_TEXT, TELX_LONGTEXT, false )
97 vlc_module_end ()
98
99 /****************************************************************************
100 * Local structures
101 ****************************************************************************/
102
103 // #define ZVBI_DEBUG
104
105 //Guessing table for missing "default region triplet"
106 static const int pi_default_triplet[] = {
107 0, 0, // slo cze
108 8, // pol
109 24,24,24,24, //ssc scr slv rum
110 32,32,32,32,32, //est lit rus bul ukr
111 48,48, //gre ell
112 64, //ara
113 88, //heb
114 16 }; //default
115 static const char *const ppsz_default_triplet[] = {
116 "slo", "cze",
117 "pol",
118 "ssc", "scr", "slv", "rum",
119 "est", "lit", "rus", "bul", "ukr",
120 "gre", "ell",
121 "ara",
122 "heb",
123 NULL
124 };
125
126 typedef enum {
127 ZVBI_KEY_RED = 'r' << 16,
128 ZVBI_KEY_GREEN = 'g' << 16,
129 ZVBI_KEY_YELLOW = 'y' << 16,
130 ZVBI_KEY_BLUE = 'b' << 16,
131 ZVBI_KEY_INDEX = 'i' << 16,
132 } ttxt_key_id;
133
134 typedef enum {
135 DATA_UNIT_EBU_TELETEXT_NON_SUBTITLE = 0x02,
136 DATA_UNIT_EBU_TELETEXT_SUBTITLE = 0x03,
137 DATA_UNIT_EBU_TELETEXT_INVERTED = 0x0C,
138
139 DATA_UNIT_ZVBI_WSS_CPR1204 = 0xB4,
140 DATA_UNIT_ZVBI_CLOSED_CAPTION_525 = 0xB5,
141 DATA_UNIT_ZVBI_MONOCHROME_SAMPLES_525 = 0xB6,
142
143 DATA_UNIT_VPS = 0xC3,
144 DATA_UNIT_WSS = 0xC4,
145 DATA_UNIT_CLOSED_CAPTION = 0xC5,
146 DATA_UNIT_MONOCHROME_SAMPLES = 0xC6,
147
148 DATA_UNIT_STUFFING = 0xFF,
149 } data_unit_id;
150
151 struct decoder_sys_t
152 {
153 vbi_decoder * p_vbi_dec;
154 vbi_dvb_demux * p_dvb_demux;
155 unsigned int i_last_page;
156 bool b_update;
157 bool b_text; /* Subtitles as text */
158
159 vlc_mutex_t lock; /* Lock to protect the following variables */
160 /* Positioning of Teletext images */
161 int i_align;
162 /* */
163 unsigned int i_wanted_page;
164 unsigned int i_wanted_subpage;
165 /* */
166 bool b_opaque;
167 struct {
168 int pgno, subno;
169 } nav_link[6];
170 int i_key[3];
171 };
172
173 static subpicture_t *Decode( decoder_t *, block_t ** );
174
175 static subpicture_t *Subpicture( decoder_t *p_dec, video_format_t *p_fmt,
176 bool b_text,
177 int i_columns, int i_rows,
178 int i_align, mtime_t i_pts );
179
180 static void EventHandler( vbi_event *ev, void *user_data );
181 static int OpaquePage( picture_t *p_src, const vbi_page p_page,
182 const video_format_t fmt, bool b_opaque );
183
184 /* Properties callbacks */
185 static int RequestPage( vlc_object_t *p_this, char const *psz_cmd,
186 vlc_value_t oldval, vlc_value_t newval, void *p_data );
187 static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
188 vlc_value_t oldval, vlc_value_t newval, void *p_data );
189 static int Position( vlc_object_t *p_this, char const *psz_cmd,
190 vlc_value_t oldval, vlc_value_t newval, void *p_data );
191 static int EventKey( vlc_object_t *p_this, char const *psz_cmd,
192 vlc_value_t oldval, vlc_value_t newval, void *p_data );
193
194 /*****************************************************************************
195 * Open: probe the decoder and return score
196 *****************************************************************************
197 * Tries to launch a decoder and return score so that the interface is able
198 * to chose.
199 *****************************************************************************/
200 static int Open( vlc_object_t *p_this )
201 {
202 decoder_t *p_dec = (decoder_t *) p_this;
203 decoder_sys_t *p_sys = NULL;
204
205 if( p_dec->fmt_in.i_codec != VLC_CODEC_TELETEXT )
206 return VLC_EGENERIC;
207
208 p_dec->pf_decode_sub = Decode;
209 p_sys = p_dec->p_sys = calloc( 1, sizeof(decoder_sys_t) );
210 if( p_sys == NULL )
211 return VLC_ENOMEM;
212
213 p_sys->i_key[0] = p_sys->i_key[1] = p_sys->i_key[2] = '*' - '0';
214 p_sys->b_update = false;
215 p_sys->p_vbi_dec = vbi_decoder_new();
216 p_sys->p_dvb_demux = vbi_dvb_pes_demux_new( NULL, NULL );
217 vlc_mutex_init( &p_sys->lock );
218
219 if( (p_sys->p_vbi_dec == NULL) || (p_sys->p_dvb_demux == NULL) )
220 {
221 msg_Err( p_dec, "VBI decoder/demux could not be created." );
222 Close( p_this );
223 return VLC_ENOMEM;
224 }
225
226 /* Some broadcasters in countries with level 1 and level 1.5 still not send a G0 to do
227 * matches against table 32 of ETSI 300 706. We try to do some best effort guessing
228 * This is not perfect, but might handle some cases where we know the vbi language
229 * is known. It would be better if people started sending G0 */
230 for( int i = 0; ppsz_default_triplet[i] != NULL; i++ )
231 {
232 if( p_dec->fmt_in.psz_language && !strcasecmp( p_dec->fmt_in.psz_language, ppsz_default_triplet[i] ) )
233 {
234 vbi_teletext_set_default_region( p_sys->p_vbi_dec, pi_default_triplet[i]);
235 msg_Dbg( p_dec, "overwriting default zvbi region: %d", pi_default_triplet[i] );
236 }
237 }
238
239 vbi_event_handler_register( p_sys->p_vbi_dec, VBI_EVENT_TTX_PAGE | VBI_EVENT_NETWORK |
240 #ifdef ZVBI_DEBUG
241 VBI_EVENT_CAPTION | VBI_EVENT_TRIGGER |
242 VBI_EVENT_ASPECT | VBI_EVENT_PROG_INFO | VBI_EVENT_NETWORK_ID |
243 #endif
244 0 , EventHandler, p_dec );
245
246 /* Create the var on vlc_global. */
247 p_sys->i_wanted_page = var_CreateGetInteger( p_dec, "vbi-page" );
248 var_AddCallback( p_dec, "vbi-page", RequestPage, p_sys );
249
250 /* Check if the Teletext track has a known "initial page". */
251 if( p_sys->i_wanted_page == 100 && p_dec->fmt_in.subs.teletext.i_magazine != -1 )
252 {
253 p_sys->i_wanted_page = 100 * p_dec->fmt_in.subs.teletext.i_magazine +
254 vbi_bcd2dec( p_dec->fmt_in.subs.teletext.i_page );
255 var_SetInteger( p_dec, "vbi-page", p_sys->i_wanted_page );
256 }
257 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
258
259 p_sys->b_opaque = var_CreateGetBool( p_dec, "vbi-opaque" );
260 var_AddCallback( p_dec, "vbi-opaque", Opaque, p_sys );
261
262 p_sys->i_align = var_CreateGetInteger( p_dec, "vbi-position" );
263 var_AddCallback( p_dec, "vbi-position", Position, p_sys );
264
265 p_sys->b_text = var_CreateGetBool( p_dec, "vbi-text" );
266 // var_AddCallback( p_dec, "vbi-text", Text, p_sys );
267
268 /* Listen for keys */
269 var_AddCallback( p_dec->p_libvlc, "key-pressed", EventKey, p_dec );
270
271 es_format_Init( &p_dec->fmt_out, SPU_ES, VLC_CODEC_SPU );
272 if( p_sys->b_text )
273 p_dec->fmt_out.video.i_chroma = VLC_CODEC_TEXT;
274 else
275 p_dec->fmt_out.video.i_chroma = VLC_CODEC_RGBA;
276 return VLC_SUCCESS;
277 }
278
279 /*****************************************************************************
280 * Close:
281 *****************************************************************************/
282 static void Close( vlc_object_t *p_this )
283 {
284 decoder_t *p_dec = (decoder_t*) p_this;
285 decoder_sys_t *p_sys = p_dec->p_sys;
286
287 var_DelCallback( p_dec, "vbi-position", Position, p_sys );
288 var_DelCallback( p_dec, "vbi-opaque", Opaque, p_sys );
289 var_DelCallback( p_dec, "vbi-page", RequestPage, p_sys );
290 var_DelCallback( p_dec->p_libvlc, "key-pressed", EventKey, p_dec );
291
292 vlc_mutex_destroy( &p_sys->lock );
293
294 if( p_sys->p_vbi_dec )
295 vbi_decoder_delete( p_sys->p_vbi_dec );
296 if( p_sys->p_dvb_demux )
297 vbi_dvb_demux_delete( p_sys->p_dvb_demux );
298 free( p_sys );
299 }
300
301 #define MAX_SLICES 32
302
303 #ifdef WORDS_BIGENDIAN
304 # define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_BE
305 #else
306 # define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_LE
307 #endif
308
309
310 /*****************************************************************************
311 * Decode:
312 *****************************************************************************/
313 static subpicture_t *Decode( decoder_t *p_dec, block_t **pp_block )
314 {
315 decoder_sys_t *p_sys = p_dec->p_sys;
316 block_t *p_block;
317 subpicture_t *p_spu = NULL;
318 video_format_t fmt;
319 bool b_cached = false;
320 vbi_page p_page;
321 const uint8_t *p_pos;
322 unsigned int i_left;
323
324 if( (pp_block == NULL) || (*pp_block == NULL) )
325 return NULL;
326
327 p_block = *pp_block;
328 *pp_block = NULL;
329
330 p_pos = p_block->p_buffer;
331 i_left = p_block->i_buffer;
332
333 while( i_left > 0 )
334 {
335 vbi_sliced p_sliced[MAX_SLICES];
336 unsigned int i_lines = 0;
337 int64_t i_pts;
338
339 i_lines = vbi_dvb_demux_cor( p_sys->p_dvb_demux, p_sliced,
340 MAX_SLICES, &i_pts, &p_pos, &i_left );
341
342 if( i_lines > 0 )
343 vbi_decode( p_sys->p_vbi_dec, p_sliced, i_lines, i_pts / 90000.0 );
344 }
345
346 /* */
347 vlc_mutex_lock( &p_sys->lock );
348 const int i_align = p_sys->i_align;
349 const unsigned int i_wanted_page = p_sys->i_wanted_page;
350 const unsigned int i_wanted_subpage = p_sys->i_wanted_subpage;
351 const bool b_opaque = p_sys->b_opaque;
352 vlc_mutex_unlock( &p_sys->lock );
353
354 /* Try to see if the page we want is in the cache yet */
355 memset( &p_page, 0, sizeof(vbi_page) );
356 b_cached = vbi_fetch_vt_page( p_sys->p_vbi_dec, &p_page,
357 vbi_dec2bcd( i_wanted_page ),
358 i_wanted_subpage, VBI_WST_LEVEL_3p5,
359 25, true );
360
361 if( i_wanted_page == p_sys->i_last_page && !p_sys->b_update )
362 goto error;
363
364 if( !b_cached )
365 {
366 if( p_sys->i_last_page != i_wanted_page )
367 {
368 /* We need to reset the subtitle */
369 p_spu = Subpicture( p_dec, &fmt, true,
370 p_page.columns, p_page.rows,
371 i_align, p_block->i_pts );
372 if( !p_spu )
373 goto error;
374 p_spu->p_region->psz_text = strdup("");
375
376 p_sys->b_update = true;
377 p_sys->i_last_page = i_wanted_page;
378 goto exit;
379 }
380 goto error;
381 }
382
383 p_sys->b_update = false;
384 p_sys->i_last_page = i_wanted_page;
385 #ifdef ZVBI_DEBUG
386 msg_Dbg( p_dec, "we now have page: %d ready for display",
387 i_wanted_page );
388 #endif
389 /* If there is a page or sub to render, then we do that here */
390 /* Create the subpicture unit */
391 p_spu = Subpicture( p_dec, &fmt, p_sys->b_text,
392 p_page.columns, p_page.rows,
393 i_align, p_block->i_pts );
394 if( !p_spu )
395 goto error;
396
397 if( p_sys->b_text )
398 {
399 unsigned int i_textsize = 7000;
400 int i_total;
401 char p_text[i_textsize+1];
402
403 i_total = vbi_print_page_region( &p_page, p_text, i_textsize,
404 "UTF-8", 0, 0, 0, 0, p_page.columns, p_page.rows );
405 p_text[i_total] = '\0';
406 /* Strip off the pagenumber */
407 if( i_total <= 40 )
408 goto error;
409 p_spu->p_region->psz_text = strdup( &p_text[8] );
410
411 #ifdef ZVBI_DEBUG
412 msg_Info( p_dec, "page %x-%x(%d)\n%s", p_page.pgno, p_page.subno, i_total, p_text );
413 #endif
414 }
415 else
416 {
417 picture_t *p_pic = p_spu->p_region->p_picture;
418
419 /* ZVBI is stupid enough to assume pitch == width */
420 p_pic->p->i_pitch = 4 * fmt.i_width;
421 vbi_draw_vt_page( &p_page, ZVBI_PIXFMT_RGBA32,
422 p_spu->p_region->p_picture->p->p_pixels, 1, 1 );
423
424 vlc_mutex_lock( &p_sys->lock );
425 memcpy( p_sys->nav_link, &p_page.nav_link, sizeof( p_sys->nav_link )) ;
426 vlc_mutex_unlock( &p_sys->lock );
427
428 OpaquePage( p_pic, p_page, fmt, b_opaque );
429 }
430
431 exit:
432 vbi_unref_page( &p_page );
433 block_Release( p_block );
434 return p_spu;
435
436 error:
437 vbi_unref_page( &p_page );
438 if( p_spu != NULL )
439 {
440 decoder_DeleteSubpicture( p_dec, p_spu );
441 p_spu = NULL;
442 }
443
444 block_Release( p_block );
445 return NULL;
446 }
447
448 static subpicture_t *Subpicture( decoder_t *p_dec, video_format_t *p_fmt,
449 bool b_text,
450 int i_columns, int i_rows, int i_align,
451 mtime_t i_pts )
452 {
453 video_format_t fmt;
454 subpicture_t *p_spu;
455
456 /* If there is a page or sub to render, then we do that here */
457 /* Create the subpicture unit */
458 p_spu = decoder_NewSubpicture( p_dec, NULL );
459 if( !p_spu )
460 {
461 msg_Warn( p_dec, "can't get spu buffer" );
462 return NULL;
463 }
464
465 memset( &fmt, 0, sizeof(video_format_t) );
466 fmt.i_chroma = b_text ? VLC_CODEC_TEXT :
467 VLC_CODEC_RGBA;
468 if( b_text )
469 {
470 fmt.i_bits_per_pixel = 0;
471 fmt.i_sar_num = 0;
472 fmt.i_sar_den = 0;
473 }
474 else
475 {
476 fmt.i_sar_num = 1;
477 fmt.i_sar_den = 1;
478 fmt.i_width = fmt.i_visible_width = i_columns * 12;
479 fmt.i_height = fmt.i_visible_height = i_rows * 10;
480 fmt.i_bits_per_pixel = 32;
481 }
482 fmt.i_x_offset = fmt.i_y_offset = 0;
483
484 p_spu->p_region = subpicture_region_New( &fmt );
485 if( p_spu->p_region == NULL )
486 {
487 msg_Err( p_dec, "cannot allocate SPU region" );
488 decoder_DeleteSubpicture( p_dec, p_spu );
489 return NULL;
490 }
491
492 p_spu->p_region->i_x = 0;
493 p_spu->p_region->i_y = 0;
494 p_spu->p_region->i_align = i_align;
495
496 p_spu->i_start = i_pts;
497 p_spu->i_stop = 0;
498 p_spu->b_ephemer = true;
499 p_spu->b_absolute = false;
500
501 if( !b_text )
502 {
503 p_spu->i_original_picture_width = fmt.i_width;
504 p_spu->i_original_picture_height = fmt.i_height;
505 }
506
507 /* */
508 *p_fmt = fmt;
509 return p_spu;
510 }
511
512 static void EventHandler( vbi_event *ev, void *user_data )
513 {
514 decoder_t *p_dec = (decoder_t *)user_data;
515 decoder_sys_t *p_sys = p_dec->p_sys;
516
517 if( ev->type == VBI_EVENT_TTX_PAGE )
518 {
519 #ifdef ZVBI_DEBUG
520 msg_Info( p_dec, "Page %03x.%02x ",
521 ev->ev.ttx_page.pgno,
522 ev->ev.ttx_page.subno & 0xFF);
523 #endif
524 if( p_sys->i_last_page == vbi_bcd2dec( ev->ev.ttx_page.pgno ) )
525 p_sys->b_update = true;
526 #ifdef ZVBI_DEBUG
527 if( ev->ev.ttx_page.clock_update )
528 msg_Dbg( p_dec, "clock" );
529 if( ev->ev.ttx_page.header_update )
530 msg_Dbg( p_dec, "header" );
531 #endif
532 }
533 else if( ev->type == VBI_EVENT_CLOSE )
534 msg_Dbg( p_dec, "Close event" );
535 else if( ev->type == VBI_EVENT_CAPTION )
536 msg_Dbg( p_dec, "Caption line: %x", ev->ev.caption.pgno );
537 else if( ev->type == VBI_EVENT_NETWORK )
538 {
539 msg_Dbg( p_dec, "Network change");
540 vbi_network n = ev->ev.network;
541 msg_Dbg( p_dec, "Network id:%d name: %s, call: %s ", n.nuid, n.name, n.call );
542 }
543 else if( ev->type == VBI_EVENT_TRIGGER )
544 msg_Dbg( p_dec, "Trigger event" );
545 else if( ev->type == VBI_EVENT_ASPECT )
546 msg_Dbg( p_dec, "Aspect update" );
547 else if( ev->type == VBI_EVENT_PROG_INFO )
548 msg_Dbg( p_dec, "Program info received" );
549 else if( ev->type == VBI_EVENT_NETWORK_ID )
550 msg_Dbg( p_dec, "Network ID changed" );
551 }
552
553 static int OpaquePage( picture_t *p_src, const vbi_page p_page,
554 const video_format_t fmt, bool b_opaque )
555 {
556 unsigned int x, y;
557
558 assert( fmt.i_chroma == VLC_CODEC_RGBA );
559
560 /* Kludge since zvbi doesn't provide an option to specify opacity. */
561 for( y = 0; y < fmt.i_height; y++ )
562 {
563 for( x = 0; x < fmt.i_width; x++ )
564 {
565 const vbi_opacity opacity = p_page.text[ y/10 * p_page.columns + x/12 ].opacity;
566 const int background = p_page.text[ y/10 * p_page.columns + x/12 ].background;
567 uint32_t *p_pixel = (uint32_t*)&p_src->p->p_pixels[y * p_src->p->i_pitch + 4*x];
568
569 switch( opacity )
570 {
571 /* Show video instead of this character */
572 case VBI_TRANSPARENT_SPACE:
573 *p_pixel = 0;
574 break;
575 /* Display foreground and background color */
576 /* To make the boxed text "closed captioning" transparent
577 * change true to false.
578 */
579 case VBI_OPAQUE:
580 /* alpha blend video into background color */
581 case VBI_SEMI_TRANSPARENT:
582 if( b_opaque )
583 break;
584 /* Full text transparency. only foreground color is show */
585 case VBI_TRANSPARENT_FULL:
586 if( (*p_pixel) == (0xff000000 | p_page.color_map[background] ) )
587 *p_pixel = 0;
588 break;
589 }
590 }
591 }
592 /* end of kludge */
593 return VLC_SUCCESS;
594 }
595
596 /* Callbacks */
597 static int RequestPage( vlc_object_t *p_this, char const *psz_cmd,
598 vlc_value_t oldval, vlc_value_t newval, void *p_data )
599 {
600 decoder_sys_t *p_sys = p_data;
601 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
602
603 vlc_mutex_lock( &p_sys->lock );
604 switch( newval.i_int )
605 {
606 case ZVBI_KEY_RED:
607 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[0].pgno );
608 p_sys->i_wanted_subpage = p_sys->nav_link[0].subno;
609 break;
610 case ZVBI_KEY_GREEN:
611 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[1].pgno );
612 p_sys->i_wanted_subpage = p_sys->nav_link[1].subno;
613 break;
614 case ZVBI_KEY_YELLOW:
615 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[2].pgno );
616 p_sys->i_wanted_subpage = p_sys->nav_link[2].subno;
617 break;
618 case ZVBI_KEY_BLUE:
619 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[3].pgno );
620 p_sys->i_wanted_subpage = p_sys->nav_link[3].subno;
621 break;
622 case ZVBI_KEY_INDEX:
623 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[5].pgno ); /* #4 is SKIPPED */
624 p_sys->i_wanted_subpage = p_sys->nav_link[5].subno;
625 break;
626 }
627 if( newval.i_int > 0 && newval.i_int < 999 )
628 {
629 p_sys->i_wanted_page = newval.i_int;
630 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
631 }
632 vlc_mutex_unlock( &p_sys->lock );
633
634 return VLC_SUCCESS;
635 }
636
637 static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
638 vlc_value_t oldval, vlc_value_t newval, void *p_data )
639 {
640 decoder_sys_t *p_sys = p_data;
641 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
642
643 vlc_mutex_lock( &p_sys->lock );
644 p_sys->b_opaque = newval.b_bool;
645 p_sys->b_update = true;
646 vlc_mutex_unlock( &p_sys->lock );
647
648 return VLC_SUCCESS;
649 }
650
651 static int Position( vlc_object_t *p_this, char const *psz_cmd,
652 vlc_value_t oldval, vlc_value_t newval, void *p_data )
653 {
654 decoder_sys_t *p_sys = p_data;
655 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
656
657 vlc_mutex_lock( &p_sys->lock );
658 p_sys->i_align = newval.i_int;
659 vlc_mutex_unlock( &p_sys->lock );
660
661 return VLC_SUCCESS;
662 }
663
664 #include <vlc_vout.h>
665 #define OSDMessage(dec, fmt, ...) do { \
666 vout_thread_t *p_vout = vlc_object_find( dec, VLC_OBJECT_VOUT, FIND_ANYWHERE ); \
667 if( p_vout ) { \
668 vout_OSDMessage( p_vout, fmt, __VA_ARGS__ ); \
669 vlc_object_release( p_vout ); \
670 } } while(0)
671
672 static int EventKey( vlc_object_t *p_this, char const *psz_cmd,
673 vlc_value_t oldval, vlc_value_t newval, void *p_data )
674 {
675 decoder_t *p_dec = p_data;
676 decoder_sys_t *p_sys = p_dec->p_sys;
677
678 VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
679
680 /* FIXME: Capture + and - key for subpage browsing */
681 if( newval.i_int == '-' || newval.i_int == '+' )
682 {
683 vlc_mutex_lock( &p_sys->lock );
684 if( p_sys->i_wanted_subpage == VBI_ANY_SUBNO && newval.i_int == '+' )
685 p_sys->i_wanted_subpage = vbi_dec2bcd(1);
686 else if ( newval.i_int == '+' )
687 p_sys->i_wanted_subpage = vbi_add_bcd( p_sys->i_wanted_subpage, 1);
688 else if( newval.i_int == '-')
689 p_sys->i_wanted_subpage = vbi_add_bcd( p_sys->i_wanted_subpage, 0xF9999999); /* BCD complement - 1 */
690
691 if ( !vbi_bcd_digits_greater( p_sys->i_wanted_subpage, 0x00 ) || vbi_bcd_digits_greater( p_sys->i_wanted_subpage, 0x99 ) )
692 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
693 else
694 OSDMessage( p_this, SPU_DEFAULT_CHANNEL, "%s: %d", _("Subpage"), vbi_bcd2dec( p_sys->i_wanted_subpage) );
695
696 p_sys->b_update = true;
697 vlc_mutex_unlock( &p_sys->lock );
698 }
699
700 /* Capture 0-9 for page selection */
701 if( newval.i_int < '0' || newval.i_int > '9' )
702 return VLC_SUCCESS;
703
704 vlc_mutex_lock( &p_sys->lock );
705 p_sys->i_key[0] = p_sys->i_key[1];
706 p_sys->i_key[1] = p_sys->i_key[2];
707 p_sys->i_key[2] = (int)(newval.i_int - '0');
708 OSDMessage( p_this, SPU_DEFAULT_CHANNEL, "%s: %c%c%c", _("Page"), (char)(p_sys->i_key[0]+'0'), (char)(p_sys->i_key[1]+'0'), (char)(p_sys->i_key[2]+'0') );
709
710 int i_new_page = 0;
711
712 if( p_sys->i_key[0] > 0 && p_sys->i_key[0] <= 8 &&
713 p_sys->i_key[1] >= 0 && p_sys->i_key[1] <= 9 &&
714 p_sys->i_key[2] >= 0 && p_sys->i_key[2] <= 9 )
715 {
716 i_new_page = p_sys->i_key[0]*100 + p_sys->i_key[1]*10 + p_sys->i_key[2];
717 p_sys->i_key[0] = p_sys->i_key[1] = p_sys->i_key[2] = '*' - '0';
718 }
719 vlc_mutex_unlock( &p_sys->lock );
720
721 if( i_new_page > 0 )
722 var_SetInteger( p_dec, "vbi-page", i_new_page );
723
724 return VLC_SUCCESS;
725 }