1 /*****************************************************************************
2 * dvbsub.c : DVB subtitles decoder thread
3 *****************************************************************************
4 * Copyright (C) 2003 ANEVIA
5 * Copyright (C) 2003 VideoLAN
6 * $Id: dvbsub.c,v 1.6 2003/11/24 02:35:50 fenrir Exp $
8 * Authors: Damien LUCAS <damien.lucas@anevia.com>
9 * Laurent Aimar <fenrir@via.ecp.fr>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
24 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
30 #include <vlc/decoder.h>
34 /*****************************************************************************
36 *****************************************************************************/
37 static int Open ( vlc_object_t *p_this );
38 static void Close( vlc_object_t *p_this );
41 add_category_hint( N_("subtitles"), NULL, VLC_TRUE );
42 set_description( _("subtitles decoder") );
43 set_capability( "decoder", 50 );
44 set_callbacks( Open, Close );
48 // Wow, that's ugly but very usefull for a memory leak track
51 static long long unsigned int trox_malloc_nb = 0;
52 static long long unsigned int trox_free_nb = 0;
54 static void* trox_malloc (size_t size)
55 { ++trox_malloc_nb; return malloc (size); }
57 static void trox_free (void* ptr)
58 { ++trox_free_nb; free(ptr); return; }
60 static void trox_call ()
62 fprintf(stderr, "dvbbsub -- Memory usage: %llu mallocs %llu frees (%llu)\n",
65 trox_malloc_nb - trox_free_nb);
69 # define trox_malloc malloc
70 # define trox_free free
73 /****************************************************************************
75 ****************************************************************************
76 * Those structures refer closely to the ETSI 300 743 Object model
77 ****************************************************************************/
79 /* Storage of a RLE entry */
80 typedef struct dvbsub_rle_s
88 struct dvbsub_rle_s* p_next;
91 /* A subpicture image is a list of codes
92 * We need to store the length of each line since nothing specify in
93 * the standard that all lines shoudl have the same length
94 * WARNING: We assume here that a spu is less than 576 lines high */
100 dvbsub_rle_t* p_codes;
103 /* The object definition gives the position of the object in a region */
104 typedef struct dvbsub_objectdef_s
113 struct dvbsub_objectdef_s* p_next;
114 } dvbsub_objectdef_t;
116 /* The Region is an aera on the image
117 * with a list of the object definitions associated
119 typedef struct dvbsub_region_s
122 uint8_t i_version_number;
128 uint8_t i_level_comp;
134 dvbsub_objectdef_t* p_object;
137 /* The page defines the list of regions */
143 uint8_t i_version_number;
144 uint8_t i_regions_number;
145 dvbsub_region_t* regions;
148 /* An object is constituted of 2 images (for interleaving) */
149 typedef struct dvbsub_object_s
152 uint8_t i_version_number;
153 uint8_t i_coding_method;
154 vlc_bool_t b_non_modify_color;
155 dvbsub_image_t* topfield;
156 dvbsub_image_t* bottomfield;
157 struct dvbsub_object_s* p_next;
160 /* The entry in the palette CLUT */
173 uint8_t i_version_number;
174 dvbsub_color_t c_2b[0xff];
175 dvbsub_color_t c_4b[0xff];
176 dvbsub_color_t c_8b[0xff];
183 dvbsub_image_t* p_rle_top;
184 dvbsub_image_t* p_rle_bot;
193 dvbsub_clut_t* p_clut[0xff];
194 dvbsub_page_t* p_page;
195 dvbsub_object_t* p_objects;
196 subpicture_t* p_spu[16];
199 struct subpicture_sys_t
202 void * p_data; /* rle datas are stored */
203 vlc_object_t* p_input; /* Link to the input */
204 vlc_bool_t b_obsolete;
209 vout_thread_t *p_vout;
217 // List of different SEGMENT TYPES
218 // According to EN 300-743, table 2
219 #define DVBSUB_ST_PAGE_COMPOSITION 0x10
220 #define DVBSUB_ST_REGION_COMPOSITION 0x11
221 #define DVBSUB_ST_CLUT_DEFINITION 0x12
222 #define DVBSUB_ST_OBJECT_DATA 0x13
223 #define DVBSUB_ST_ENDOFDISPLAY 0x80
224 #define DVBSUB_ST_STUFFING 0xff
225 // List of different OBJECT TYPES
226 // According to EN 300-743, table 6
227 #define DVBSUB_OT_BASIC_BITMAP 0x00
228 #define DVBSUB_OT_BASIC_CHAR 0x01
229 #define DVBSUB_OT_COMPOSITE_STRING 0x02
231 // According to EN 300-743, table 9
232 #define DVBSUB_DT_2BP_CODE_STRING 0x10
233 #define DVBSUB_DT_4BP_CODE_STRING 0x11
234 #define DVBSUB_DT_8BP_CODE_STRING 0x12
235 #define DVBSUB_DT_24_TABLE_DATA 0x20
236 #define DVBSUB_DT_28_TABLE_DATA 0x21
237 #define DVBSUB_DT_48_TABLE_DATA 0x22
238 #define DVBSUB_DT_END_LINE 0xf0
240 /*****************************************************************************
242 *****************************************************************************/
243 static void Decode ( decoder_t *, block_t ** );
245 static vout_thread_t *FindVout( decoder_t * );
247 static int dvbsub_init( dvbsub_all_t *, int );
248 static void dvbsub_decode_segment( dvbsub_all_t *p_dvbsub, bs_t *s );
249 static void dvbsub_render( dvbsub_all_t *, vout_thread_t * );
250 static void dvbsub_clean( dvbsub_all_t * );
253 /*****************************************************************************
254 * Open: probe the decoder and return score
255 *****************************************************************************
256 * Tries to launch a decoder and return score so that the interface is able
258 *****************************************************************************/
259 static int Open( vlc_object_t *p_this )
261 decoder_t *p_dec = (decoder_t*) p_this;
262 decoder_sys_t *p_sys;
264 if( p_dec->fmt_in.i_codec != VLC_FOURCC('d','v','b','s') )
269 p_dec->pf_decode_sub = Decode;
270 p_sys = p_dec->p_sys = malloc( sizeof( decoder_sys_t ) );
272 p_sys->p_vout = NULL;
274 dvbsub_init( &p_sys->dvbsub, p_dec->fmt_in.subs.dvb.i_id );
276 es_format_Init( &p_dec->fmt_out, SPU_ES, VLC_FOURCC( 'd','v','b','s' ) );
281 /*****************************************************************************
283 *****************************************************************************/
284 static void Close( vlc_object_t *p_this )
286 decoder_t *p_dec = (decoder_t*) p_this;
287 decoder_sys_t *p_sys = p_dec->p_sys;
289 if( p_sys->p_vout && p_sys->p_vout->p_subpicture != NULL )
291 subpicture_t * p_subpic;
293 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
295 p_subpic = &p_sys->p_vout->p_subpicture[i_subpic];
296 if( p_subpic != NULL &&
297 ( ( p_subpic->i_status == RESERVED_SUBPICTURE ) ||
298 ( p_subpic->i_status == READY_SUBPICTURE ) ) )
300 vout_DestroySubPicture( p_sys->p_vout, p_subpic );
305 dvbsub_clean( &p_sys->dvbsub );
310 /*****************************************************************************
312 *****************************************************************************/
313 static void Decode( decoder_t *p_dec, block_t **pp_block )
315 decoder_sys_t *p_sys = p_dec->p_sys;
318 if( pp_block == NULL || *pp_block == NULL )
325 p_sys->dvbsub.i_pts = p_block->i_pts;
326 if( p_sys->dvbsub.i_pts <= 0 )
328 msg_Warn( p_dec, "non dated subtitle" );
329 block_Release( p_block );
333 if( ( p_sys->p_vout = FindVout( p_dec ) ) )
335 int i_data_identifier;
336 int i_subtitle_stream_id;
337 int i_end_data_marker;
339 bs_init( &p_sys->bs, p_block->p_buffer, p_block->i_buffer );
341 i_data_identifier = bs_read( &p_sys->bs, 8 );
342 i_subtitle_stream_id = bs_read( &p_sys->bs, 8 );
346 if( bs_show( &p_sys->bs, 8 ) != 0x0f )
350 dvbsub_decode_segment( &p_sys->dvbsub, &p_sys->bs );
352 i_end_data_marker = bs_read( &p_sys->bs, 8 );
354 /* Check if the page is to be displayed */
355 if( p_sys->dvbsub.p_page && p_sys->dvbsub.p_objects )
357 dvbsub_render( &p_sys->dvbsub, p_sys->p_vout );
360 vlc_object_release( p_sys->p_vout );
363 block_Release( p_block );
366 /* following functions are local */
367 /*****************************************************************************
368 * FindVout: Find a vout or wait for one to be created.
369 *****************************************************************************/
370 static vout_thread_t *FindVout( decoder_t *p_dec )
374 vout_thread_t *p_vout;
376 if( p_dec->b_die || p_dec->b_error )
380 p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
385 msleep( VOUT_OUTMEM_SLEEP );
390 static int dvbsub_init( dvbsub_all_t *p_dvbsub, int i_id )
394 memset( p_dvbsub, 0, sizeof( dvbsub_all_t ) );
397 p_dvbsub->i_id = i_id;
398 p_dvbsub->p_page = NULL;
399 p_dvbsub->p_objects = NULL;
400 for( i = 0; i < 255; i++ )
402 p_dvbsub->p_clut[i] = NULL;
404 for( i = 0; i < 16; i++ )
406 p_dvbsub->p_spu[i] = NULL;
411 static void free_all( dvbsub_all_t * );
413 static void dvbsub_clean( dvbsub_all_t *p_dvbsub )
415 free_all( p_dvbsub );
420 static void dvbsub_decode_clut( dvbsub_all_t *p_dvbsub, bs_t *s );
421 static void dvbsub_decode_page_composition( dvbsub_all_t *p_dvbsub, bs_t *s);
422 static void dvbsub_decode_region_composition( dvbsub_all_t *p_dvbsub, bs_t *s );
423 static void dvbsub_stop_display( dvbsub_all_t* p_dvbsub );
424 static void dvbsub_decode_object( dvbsub_all_t *p_dvbsub, bs_t *s );
426 static void free_page (dvbsub_page_t* p_p);
428 static void dvbsub_decode_segment( dvbsub_all_t *p_dvbspu, bs_t *s )
438 i_type = bs_read( s, 8 );
441 i_page_id = bs_read( s, 16 );
444 i_size = bs_show( s, 16 );
446 if( i_page_id != p_dvbspu->i_id )
448 bs_skip( s, 8 * ( 2 + i_size ) );
454 case DVBSUB_ST_CLUT_DEFINITION:
455 dvbsub_decode_clut( p_dvbspu, s );
457 case DVBSUB_ST_PAGE_COMPOSITION:
458 dvbsub_decode_page_composition( p_dvbspu, s );
460 case DVBSUB_ST_REGION_COMPOSITION:
461 dvbsub_decode_region_composition( p_dvbspu, s );
463 case DVBSUB_ST_OBJECT_DATA:
464 dvbsub_decode_object( p_dvbspu, s );
466 case DVBSUB_ST_ENDOFDISPLAY:
467 dvbsub_stop_display( p_dvbspu );
469 case DVBSUB_ST_STUFFING:
471 fprintf( stderr, "*** DVBSUB - Unsupported segment type ! (%04x)",
473 bs_skip( s, 8 * ( 2 + i_size ) );
478 static void dvbsub_stop_display( dvbsub_all_t *p_dvbsub )
482 for( i = 0; p_dvbsub->p_spu[i] != NULL; i++ )
484 p_dvbsub->p_spu[i]->i_stop = p_dvbsub->i_pts;
488 static void dvbsub_decode_clut( dvbsub_all_t *p_dvbsub, bs_t *s )
490 uint16_t i_segment_length;
491 uint16_t i_processed_length;
494 uint8_t i_version_number;
496 i_segment_length = bs_read( s, 16 );
497 i_clut_id = bs_read( s, 8 );
498 i_version_number = bs_read( s, 4 );
500 // Check that this id doesn't not already exist
501 // with the same version number
502 // And allocate memory if necessary
503 if( p_dvbsub->p_clut[i_clut_id] != NULL)
505 if( p_dvbsub->p_clut[i_clut_id]->i_version_number == i_version_number )
507 //TODO skip the right number of bits
512 memset( p_dvbsub->p_clut[i_clut_id], 0, sizeof(dvbsub_clut_t) );
517 p_dvbsub->p_clut[i_clut_id] = trox_malloc( sizeof(dvbsub_clut_t) );
519 clut = p_dvbsub->p_clut[i_clut_id];
521 /* We don't have this version of the CLUT:
523 clut->i_version_number = i_version_number;
524 bs_skip( s, 4 ); /* Reserved bits */
525 i_processed_length = 2;
526 while( i_processed_length < i_segment_length )
528 uint8_t y, cb, cr, t;
532 i_id = bs_read( s, 8 );
533 i_type = bs_read( s, 3 );
537 if( bs_read( s, 1 ) )
540 cr = bs_read( s, 8 );
541 cb = bs_read( s, 8 );
543 i_processed_length += 6;
548 cr = bs_read( s, 4 );
549 cb = bs_read( s, 4 );
551 i_processed_length += 4;
554 /* According to EN 300-743 section 7.2.3 note 1, type should
555 * not have more than 1 bit set to one
556 But, some strams don't respect this note. */
560 clut->c_2b[i_id].Y = y;
561 clut->c_2b[i_id].Cr = cr;
562 clut->c_2b[i_id].Cb = cb;
563 clut->c_2b[i_id].T = t;
567 clut->c_4b[i_id].Y = y;
568 clut->c_4b[i_id].Cr = cr;
569 clut->c_4b[i_id].Cb = cb;
570 clut->c_4b[i_id].T = t;
574 clut->c_8b[i_id].Y = y;
575 clut->c_8b[i_id].Cr = cr;
576 clut->c_8b[i_id].Cb = cb;
577 clut->c_8b[i_id].T = t;
582 static void dvbsub_decode_page_composition( dvbsub_all_t *p_dvbsub, bs_t *s )
584 unsigned int i_version_number;
585 unsigned int i_state;
586 unsigned int i_segment_length;
590 i_segment_length = bs_read( s, 16 );
592 /* A page is composed by one or more region: */
593 i_timeout = bs_read( s, 8 );
594 i_version_number = bs_read( s, 4 );
595 i_state = bs_read( s, 2 );
597 /* TODO We assume it is a new page (i_state) */
598 if( p_dvbsub->p_page ) free_page( p_dvbsub->p_page );
600 bs_skip( s, 2 ); /* Reserved */
602 /* Allocate a new page */
603 p_dvbsub->p_page = trox_malloc( sizeof(dvbsub_page_t) );
604 p_dvbsub->p_page->i_timeout = i_timeout;
606 /* Number of regions: */
607 p_dvbsub->p_page->i_regions_number = (i_segment_length-2) / 6;
609 /* Special workaround for CAVENA encoders
610 * a page with no regions is sent instead of a 0x80 packet (End Of Display) */
611 if( p_dvbsub->p_page->i_regions_number == 0 )
613 dvbsub_stop_display( p_dvbsub );
615 /* /Special workaround */
617 p_dvbsub->p_page->regions =
618 trox_malloc(p_dvbsub->p_page->i_regions_number*sizeof(dvbsub_region_t));
619 for( i = 0; i < p_dvbsub->p_page->i_regions_number; i++ )
621 p_dvbsub->p_page->regions[i].i_id = bs_read( s, 8 );
622 bs_skip( s, 8 ); /* Reserved */
623 p_dvbsub->p_page->regions[i].i_x = bs_read( s, 16 );
624 p_dvbsub->p_page->regions[i].i_y = bs_read( s, 16 );
625 p_dvbsub->p_page->regions[i].p_object = NULL;
630 static void dvbsub_decode_region_composition( dvbsub_all_t *p_dvbsub, bs_t *s )
632 dvbsub_region_t* p_region = NULL;
633 unsigned int i_segment_length;
634 unsigned int i_processed_length;
635 unsigned int i_region_id;
638 i_segment_length = bs_read( s, 16 );
641 i_region_id = bs_read( s, 8 );
642 for( i = 0; i < p_dvbsub->p_page->i_regions_number; i++ )
644 if( p_dvbsub->p_page->regions[i].i_id == i_region_id )
646 p_region = &(p_dvbsub->p_page->regions[i]);
650 if( p_region == NULL )
653 * The region has never been declared before
655 fprintf( stderr, "Decoding of undeclared region N/A...\n" );
659 /* Skip version number and fill flag */
660 if( bs_show( s, 4 ) == p_region->i_version_number )
662 fprintf( stderr, "Skipping already known region N/A ...\n" );
663 /* TODO Skip the right number of bits */
666 /* Region attributes */
667 p_region->i_version_number = bs_read( s, 4 );
668 p_region->b_fill = bs_read( s, 1 );
669 bs_skip( s, 3 ); /* Reserved */
670 p_region->i_width = bs_read( s, 16 );
671 p_region->i_height = bs_read( s, 16 );
672 p_region->i_level_comp = bs_read( s, 3 );
673 p_region->i_depth = bs_read( s, 3 );
674 bs_skip( s, 2 ); /* Reserved */
675 p_region->i_clut = bs_read( s, 8 );
676 p_region->i_8bp_code = bs_read( s, 8 );
677 p_region->i_4bp_code = bs_read( s, 4 );
678 p_region->i_2bp_code = bs_read( s, 2 );
679 bs_skip( s, 2 ); /* Reserved */
681 /* List of objects in the region: */
682 /* We already skipped 10 bytes */
684 i_processed_length = 10;
685 while( i_processed_length < i_segment_length )
687 /* We create a new object */
688 dvbsub_objectdef_t *p_obj = trox_malloc(sizeof(dvbsub_objectdef_t));
690 /* We parse object properties */
691 p_obj->p_next = NULL;
692 p_obj->i_id = bs_read( s, 16 );
693 p_obj->i_type = bs_read( s, 2 );
694 p_obj->i_provider = bs_read( s, 2 );
695 p_obj->i_xoffset = bs_read( s, 12 );
696 bs_skip( s, 4 ); /* Reserved */
697 p_obj->i_yoffset = bs_read( s, 12 );
699 i_processed_length += 6;
701 if( p_obj->i_type == DVBSUB_OT_BASIC_CHAR ||
702 p_obj->i_type == DVBSUB_OT_COMPOSITE_STRING )
704 p_obj->i_fg_pc = bs_read( s, 8 );
705 p_obj->i_bg_pc = bs_read( s, 8 );
706 i_processed_length += 2;
710 if( p_region->p_object )
712 dvbsub_objectdef_t *p_o;
713 for( p_o = p_region->p_object; ; p_o = p_o->p_next )
715 if( p_o->p_next == NULL )
724 p_region->p_object = p_obj;
729 static dvbsub_image_t* dvbsub_parse_pdata( dvbsub_all_t *p_dvbsub, bs_t *s, uint16_t length );
730 static uint16_t dvbsub_count0x11( bs_t *s, uint16_t* p, dvbsub_image_t* p_image);
732 static void dvbsub_decode_object( dvbsub_all_t *p_dvbsub, bs_t *s )
734 dvbsub_object_t *p_obj;
735 uint16_t i_segment_length;
737 /* Memory Allocation */
738 p_obj = trox_malloc ( sizeof ( dvbsub_object_t ) );
739 p_obj->p_next = NULL;
741 i_segment_length = bs_read( s, 16 );
743 /* TODO Check we don't already have this object / this version */
744 p_obj->i_id = bs_read( s, 16 );
745 p_obj->i_version_number = bs_read( s, 4 );
746 p_obj->i_coding_method = bs_read( s, 2 );
747 p_obj->b_non_modify_color= bs_read( s, 1 );
748 bs_skip( s, 1 ); /* Reserved */
750 if( p_obj->i_coding_method == 0x00 )
752 uint16_t i_topfield_length;
753 uint16_t i_bottomfield_length;
755 i_topfield_length = bs_read( s, 16 );
756 i_bottomfield_length= bs_read( s, 16 );
758 p_obj->topfield = dvbsub_parse_pdata( p_dvbsub, s, i_topfield_length );
759 p_obj->bottomfield = dvbsub_parse_pdata( p_dvbsub, s, i_bottomfield_length );
763 bs_skip( s, (i_segment_length - 3 ) * 8 );
765 * DVB subtitling as characters */
768 /* Add this object to the list of the page */
769 p_obj->p_next = p_dvbsub->p_objects;
770 p_dvbsub->p_objects = p_obj;
773 static dvbsub_image_t* dvbsub_parse_pdata( dvbsub_all_t *p_dvbsub, bs_t *s, uint16_t length )
775 dvbsub_image_t* p_image;
776 uint16_t i_processed_length=0;
778 uint16_t i_cols_last=0;
780 p_image = trox_malloc ( sizeof ( dvbsub_image_t) );
781 p_image->p_last=NULL;
783 memset(p_image->i_cols, 0, 576*sizeof(uint16_t));
785 /* Let's parse it a first time to determine the size of the buffer */
786 while( i_processed_length < length)
788 switch( bs_read( s, 8 ) )
791 fprintf(stderr, "0x10 N/A\n");
794 i_processed_length +=
795 1 + dvbsub_count0x11( s, &(p_image->i_cols[i_lines]),
799 fprintf(stderr, "0x12 N/A\n");
802 fprintf(stderr, "0x20 N/A\n");
805 fprintf(stderr, "0x21 N/A\n");
808 fprintf(stderr, "0x22 N/A\n");
811 i_processed_length++;
817 p_image->i_rows = i_lines;
818 p_image->i_cols[i_lines] = i_cols_last;
820 /* Check word-aligned bits */
821 if( bs_show( s, 8 ) == 0x00 )
831 static void add_rle_code( dvbsub_image_t *p, uint16_t num, uint8_t color )
833 if(p->p_last != NULL)
835 p->p_last->p_next = trox_malloc (sizeof (dvbsub_rle_t));
836 p->p_last = p->p_last->p_next;
840 p->p_codes = trox_malloc (sizeof (dvbsub_rle_t));
841 p->p_last = p->p_codes;
843 p->p_last->i_num = num;
844 p->p_last->i_color_code = color;
845 p->p_last->p_next = NULL;
849 static uint16_t dvbsub_count0x11( bs_t *s, uint16_t* p, dvbsub_image_t* p_image )
851 uint16_t i_processed=0;
853 uint16_t i_count = 0;
858 if( (i_color = bs_read( s, 4 )) != 0x00 )
863 /* 1 pixel of color code '0000' */
864 add_rle_code( p_image, 1, i_color );
868 if( bs_read( s, 1 ) == 0x00 ) // Switch1
870 if( bs_show( s, 3 ) != 0x00 )
872 i_count = 2 + bs_read( s, 3 );
874 add_rle_code( p_image, i_count, 0x00 );
885 if( bs_read( s, 1 ) == 0x00) //Switch2
887 i_count = 4 + bs_read( s, 2 );
888 i_color = bs_read( s, 4 );
891 add_rle_code( p_image, i_count, i_color );
895 switch ( bs_read( s, 2 ) ) //Switch3
900 add_rle_code( p_image, 1, 0x00 );
905 add_rle_code( p_image, 2, 0x00 );
908 i_count = 9 + bs_read( s, 4 );
909 i_color = bs_read( s, 4 );
912 add_rle_code( p_image, i_count, i_color );
915 i_count= 25 + bs_read( s, 8 );
916 i_color = bs_read( s, 4 );
919 add_rle_code( p_image, i_count, i_color );
929 return ( i_processed + 7 ) / 8 ;
932 static void free_image (dvbsub_image_t* p_i)
935 dvbsub_rle_t* p2=NULL;
937 for( p1 = p_i->p_codes; p1 != NULL; p1=p2)
947 static void free_object (dvbsub_object_t* p_o)
952 static void free_objectdefs ( dvbsub_objectdef_t* p_o)
954 dvbsub_objectdef_t* p1;
955 dvbsub_objectdef_t* p2=NULL;
957 for( p1 = p_o; p1 != NULL; p1=p2)
965 static void free_regions (dvbsub_region_t* p_r, uint8_t nb)
969 for (i = 0; i<nb; i++) free_objectdefs ( p_r[i].p_object );
974 static void free_objects (dvbsub_object_t* p_o)
977 dvbsub_object_t* p2=NULL;
979 for( p1 = p_o; p1 != NULL; p1=p2)
982 free_image (p1->topfield);
983 free_image (p1->bottomfield);
988 static void free_clut ( dvbsub_clut_t* p_c )
993 static void free_page (dvbsub_page_t* p_p)
995 free_regions (p_p->regions, p_p->i_regions_number);
1000 static void free_spu( subpicture_t *p_spu )
1004 free_image(((dvbsub_render_t *)p_spu->p_sys->p_data)->p_rle_top);
1005 free_image(((dvbsub_render_t *)p_spu->p_sys->p_data)->p_rle_bot);
1006 trox_free(p_spu->p_sys->p_data);
1007 trox_free( p_spu->p_sys );
1008 p_spu->p_sys = NULL;
1012 static void free_all ( dvbsub_all_t* p_a )
1016 for(i=0; i<0xff; i++) if (p_a->p_clut[i]) free_clut ( p_a->p_clut[i] );
1017 for(i=0; i<16; i++) if (p_a->p_spu[i]) free_spu ( p_a->p_spu[i] );
1018 if(p_a->p_page) free_page( p_a->p_page );
1019 free_objects (p_a->p_objects);
1022 static void RenderYUY2( vout_thread_t *p_vout, picture_t *p_pic,
1023 const subpicture_t *p_spu )
1025 /* Common variables */
1031 dvbsub_render_t* p_r = ((dvbsub_render_t *)p_spu->p_sys->p_data);
1032 dvbsub_image_t* p_im = p_r->p_rle_top;
1035 p_desty = p_pic->Y_PIXELS;
1036 //let's render the 1st frame
1037 for(p_c = p_im->p_codes; p_c->p_next != NULL; p_c=p_c->p_next)
1039 // if( p_c->y != 0 && p_c->t < 0x20)
1040 if( p_c->y != 0 && p_c->t < 0x20)
1044 //memset(p_desty+ y*p_pic->Y_PITCH + x, p_c->y, p_c->i_num);
1045 // In YUY2 we have to set pixel per pixel
1046 for( i_cnt = 0; i_cnt < p_c->i_num; i_cnt+=2 )
1048 memset(p_desty+ y*p_pic->Y_PITCH + 2*x + i_cnt, p_c->y, 1);
1049 // memset(p_desty+ y*p_pic->Y_PITCH + 2*x + i_cnt+1, p_c->cr, 1);
1050 // memset(p_desty+ y*p_pic->Y_PITCH + 2*x + i_cnt+2, p_c->y, 1);
1051 // memset(p_desty+ y*p_pic->Y_PITCH + 2*x + i_cnt+3, p_c->cb, 1);
1055 if(j >= p_im->i_cols[i])
1059 if( i>= p_im->i_rows) break;
1061 //idem for the second frame
1062 p_im = p_r->p_rle_bot; i=0; j=0;
1063 for(p_c = p_im->p_codes; p_c->p_next != NULL; p_c=p_c->p_next)
1065 if( p_c->y != 0 && p_c->t < 0x20)
1069 //memset(p_desty+ y*p_pic->Y_PITCH + x, p_c->y, p_c->i_num);
1070 // In YUY2 we have to set pixel per pixel
1071 for( i_cnt = 0; i_cnt < p_c->i_num; i_cnt+=2 )
1073 memset(p_desty+ y*p_pic->Y_PITCH + 2*x + i_cnt, p_c->y, 1);
1074 // memset(p_desty+ y*p_pic->Y_PITCH + 2*x + i_cnt+1, p_c->cr, 1);
1075 // memset(p_desty+ y*p_pic->Y_PITCH + 2*x + i_cnt+2, p_c->y, 1);
1076 // memset(p_desty+ y*p_pic->Y_PITCH + 2*x + i_cnt+3, p_c->cb, 1);
1080 if(j >= p_im->i_cols[i])
1084 if( i>= p_im->i_rows) break;
1089 static void RenderI42x( vout_thread_t *p_vout, picture_t *p_pic,
1090 const subpicture_t *p_spu )
1092 /* Common variables */
1099 dvbsub_render_t* p_r = ((dvbsub_render_t *)p_spu->p_sys->p_data);
1100 dvbsub_image_t* p_im = p_r->p_rle_top;
1103 p_desty = p_pic->Y_PIXELS;
1104 p_destu = p_pic->U_PIXELS;
1105 p_destv = p_pic->V_PIXELS;
1106 //let's render the 1st frame
1107 for(p_c = p_im->p_codes; p_c->p_next != NULL; p_c=p_c->p_next)
1113 //memset(p_dest+ y*p_pic->U_PITCH*2 + x, p_c->cr, p_c->i_num);
1114 // memset(p_desty+ (y)*p_pic->Y_PITCH + x, p_c->cr, p_c->i_num);
1115 //memset(p_dest+ y*p_pic->V_PITCH*2 + x, p_c->cb, p_c->i_num);
1116 //memset(p_destu+ (y)*p_pic->Y_PITCH + x, p_c->cb, p_c->i_num);
1117 memset(p_desty+ y*p_pic->Y_PITCH + x, p_c->y, p_c->i_num);
1118 // memset(p_desty+ 2*y*p_pic->U_PITCH + x, p_c->cr, p_c->i_num);
1119 // memset(p_desty+ 2*y*p_pic->V_PITCH + x, p_c->cb, p_c->i_num);
1122 if(j >= p_im->i_cols[i])
1126 if( i>= p_im->i_rows) break;
1128 //idem for the second frame
1129 p_im = p_r->p_rle_bot; i=0; j=0;
1130 for(p_c = p_im->p_codes; p_c->p_next != NULL; p_c=p_c->p_next)
1132 if( p_c->y != 0 && p_c->t < 0x20)
1136 // memset(p_desty+ y*p_pic->U_PITCH*2 + x, p_c->cr, p_c->i_num);
1137 // memset(p_desty+ y*p_pic->V_PITCH*2 + x, p_c->cb, p_c->i_num);
1138 memset(p_desty+ y*p_pic->Y_PITCH + x, p_c->y, p_c->i_num);
1139 // memset(p_desty+ 2*y*p_pic->U_PITCH + x, p_c->cr, p_c->i_num);
1140 // memset(p_desty+ 2*y*p_pic->V_PITCH + x, p_c->cb, p_c->i_num);
1143 if(j >= p_im->i_cols[i])
1147 if( i>= p_im->i_rows) break;
1151 static void dvbsub_RenderDVBSUB( vout_thread_t *p_vout, picture_t *p_pic,
1152 const subpicture_t *p_spu )
1154 /* If we have changed the language on the fly */
1156 if( p_spu->p_sys == NULL || p_spu->p_sys->b_obsolete )
1161 switch( p_vout->output.i_chroma )
1163 /* I420 target, no scaling */
1164 case VLC_FOURCC('I','4','2','2'):
1165 case VLC_FOURCC('I','4','2','0'):
1166 case VLC_FOURCC('I','Y','U','V'):
1167 case VLC_FOURCC('Y','V','1','2'):
1168 /* As long as we just use Y info, I422 and YV12 are just equivalent
1169 * to I420. Remember to change it the day we'll take into account
1171 RenderI42x( p_vout, p_pic, p_spu );
1174 /* RV16 target, scaling */
1175 case VLC_FOURCC('R','V','1','6'):
1176 fprintf(stderr, "Not implemented chroma ! RV16)\n");
1177 /* RenderRV16( p_vout, p_pic, p_spu ); */
1180 /* RV32 target, scaling */
1181 case VLC_FOURCC('R','V','2','4'):
1182 case VLC_FOURCC('R','V','3','2'):
1183 fprintf(stderr, "Not implemented chroma ! RV32 \n");
1184 /* RenderRV32( p_vout, p_pic, p_spu ); */
1187 /* NVidia overlay, no scaling */
1188 case VLC_FOURCC('Y','U','Y','2'):
1189 RenderYUY2( p_vout, p_pic, p_spu );
1193 msg_Err( p_vout, "unknown chroma, can't render SPU" );
1198 static void dvbsub_Destroy( subpicture_t *p_spu )
1203 static void dvbsub_render( dvbsub_all_t *dvbsub, vout_thread_t *p_vout )
1205 dvbsub_region_t* p_region;
1206 dvbsub_objectdef_t* p_objectdef;
1207 dvbsub_object_t* p_o;
1208 dvbsub_object_t* p_object;
1209 dvbsub_object_t* p_object_old;
1210 dvbsub_render_t* p_render;
1215 /* loop on regions */
1216 for( i = 0; i < dvbsub->p_page->i_regions_number; i++ )
1218 p_region = &(dvbsub->p_page->regions[i]);
1220 /* loop on objects */
1221 for(p_objectdef = p_region->p_object; p_objectdef != NULL; p_objectdef = p_objectdef->p_next )
1223 /* Look for the right object */
1224 p_object = dvbsub->p_objects;
1225 while((p_object!=NULL) && (p_object->i_id != p_objectdef->i_id))
1227 p_object = p_object->p_next;
1232 fprintf(stderr, "Internal DvbSub decoder error\n");
1236 /* Allocate the render structure */
1237 p_render = trox_malloc(sizeof(dvbsub_render_t));
1238 p_render->i_x = p_region->i_x + p_objectdef->i_xoffset;
1239 p_render->i_y = p_region->i_y + p_objectdef->i_yoffset;
1240 p_render->p_rle_top = p_object->topfield;
1241 p_render->p_rle_bot = p_object->bottomfield;
1243 // if we did not recieved the CLUT yet
1244 if ( !dvbsub->p_clut[p_region->i_clut] ) return;
1246 /* Compute the color datas according to the appropriate CLUT */
1247 for(p_c=p_render->p_rle_top->p_codes;p_c->p_next!=NULL; p_c=p_c->p_next)
1249 //TODO We assume here we are working in 4bp
1250 p_c->y=dvbsub->p_clut[p_region->i_clut]->c_4b[p_c->i_color_code].Y;
1251 p_c->cr=dvbsub->p_clut[p_region->i_clut]->c_4b[p_c->i_color_code].Cr;
1252 p_c->cb=dvbsub->p_clut[p_region->i_clut]->c_4b[p_c->i_color_code].Cb;
1253 p_c->t=dvbsub->p_clut[p_region->i_clut]->c_4b[p_c->i_color_code].T;
1255 for(p_c=p_render->p_rle_bot->p_codes;p_c->p_next!=NULL; p_c=p_c->p_next)
1257 //TODO We assume here we are working in 4bp
1258 p_c->y=dvbsub->p_clut[p_region->i_clut]->c_4b[p_c->i_color_code].Y;
1259 p_c->cr=dvbsub->p_clut[p_region->i_clut]->c_4b[p_c->i_color_code].Cr;
1260 p_c->cb=dvbsub->p_clut[p_region->i_clut]->c_4b[p_c->i_color_code].Cb;
1261 p_c->t=dvbsub->p_clut[p_region->i_clut]->c_4b[p_c->i_color_code].T;
1265 /* Allocate the subpicture internal data. */
1266 dvbsub->p_spu[j] = vout_CreateSubPicture( p_vout, MEMORY_SUBPICTURE );
1267 if( dvbsub->p_spu[j] == NULL )
1269 fprintf(stderr, "Unable to allocate memory ... skipping\n");
1272 /* Set the pf_render callback */
1273 dvbsub->p_spu[j]->pf_render = dvbsub_RenderDVBSUB;
1274 dvbsub->p_spu[j]->p_sys = trox_malloc( sizeof( subpicture_sys_t ));
1275 dvbsub->p_spu[j]->p_sys->p_data = p_render;
1276 dvbsub->p_spu[j]->p_sys->b_obsolete=0;
1277 dvbsub->p_spu[j]->pf_destroy = dvbsub_Destroy;
1278 dvbsub->p_spu[j]->i_start = dvbsub->i_pts;
1279 dvbsub->p_spu[j]->i_stop = dvbsub->p_spu[j]->i_start + dvbsub->p_page->i_timeout*1000000;
1280 dvbsub->p_spu[j]->b_ephemer = VLC_FALSE;
1282 // At this stage, we have all we need in p_render
1283 // We need to free the object
1284 //Remove this object from the list
1285 p_object_old = p_object;
1286 if(p_object == dvbsub->p_objects)
1287 dvbsub->p_objects = p_object->p_next;
1290 for(p_o = dvbsub->p_objects; p_o->p_next != p_object; p_o=p_o->p_next);
1291 p_o->p_next = p_object->p_next;
1293 free_object(p_object_old);
1295 vout_DisplaySubPicture( p_vout, dvbsub->p_spu[j] );