1 /*****************************************************************************
2 * mosaic.c : Mosaic video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2004-2008 VLC authors and VideoLAN
5 * $Id: b76166414a0d0b9b8edeccb28ef44c0695a9a8b5 $
6 *
7 * Authors: Antoine Cellerier <dionoea at videolan dot org>
8 * Christophe Massiot <massiot@via.ecp.fr>
9 *
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.
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 Lesser General Public License for more details.
19 *
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 *****************************************************************************/
24
25 /*****************************************************************************
26 * Preamble
27 *****************************************************************************/
28 #ifdef HAVE_CONFIG_H
29 # include "config.h"
30 #endif
31
32 #include <math.h>
33 #include <limits.h> /* INT_MAX */
34
35 #include <vlc_common.h>
36 #include <vlc_plugin.h>
37 #include <vlc_filter.h>
38 #include <vlc_image.h>
39 #include <vlc_subpicture.h>
40
41 #include "mosaic.h"
42
43 #define BLANK_DELAY INT64_C(1000000)
44
45 /*****************************************************************************
46 * Local prototypes
47 *****************************************************************************/
48 static int CreateFilter ( vlc_object_t * );
49 static void DestroyFilter ( vlc_object_t * );
50 static subpicture_t *Filter ( filter_t *, mtime_t );
51
52 static int MosaicCallback ( vlc_object_t *, char const *, vlc_value_t,
53 vlc_value_t, void * );
54
55 /*****************************************************************************
56 * filter_sys_t : filter descriptor
57 *****************************************************************************/
58 struct filter_sys_t
59 {
60 vlc_mutex_t lock; /* Internal filter lock */
61
62 image_handler_t *p_image;
63
64 int i_position; /* Mosaic positioning method */
65 bool b_ar; /* Do we keep the aspect ratio ? */
66 bool b_keep; /* Do we keep the original picture format ? */
67 int i_width, i_height; /* Mosaic height and width */
68 int i_cols, i_rows; /* Mosaic rows and cols */
69 int i_align; /* Mosaic alignment in background video */
70 int i_xoffset, i_yoffset; /* Top left corner offset */
71 int i_borderw, i_borderh; /* Border width/height between miniatures */
72 int i_alpha; /* Subfilter alpha blending */
73
74 char **ppsz_order; /* List of picture-ids */
75 int i_order_length;
76
77 int *pi_x_offsets; /* List of substreams x offsets */
78 int *pi_y_offsets; /* List of substreams y offsets */
79 int i_offsets_length;
80
81 mtime_t i_delay;
82 };
83
84 /*****************************************************************************
85 * Module descriptor
86 *****************************************************************************/
87 #define ALPHA_TEXT N_("Transparency")
88 #define ALPHA_LONGTEXT N_( \
89 "Transparency of the mosaic foreground pictures. " \
90 "0 means transparent, 255 opaque (default)." )
91
92 #define HEIGHT_TEXT N_("Height")
93 #define HEIGHT_LONGTEXT N_( "Total height of the mosaic, in pixels." )
94 #define WIDTH_TEXT N_("Width")
95 #define WIDTH_LONGTEXT N_( "Total width of the mosaic, in pixels." )
96
97 #define XOFFSET_TEXT N_("Top left corner X coordinate")
98 #define XOFFSET_LONGTEXT N_( \
99 "X Coordinate of the top-left corner of the mosaic.")
100 #define YOFFSET_TEXT N_("Top left corner Y coordinate")
101 #define YOFFSET_LONGTEXT N_( \
102 "Y Coordinate of the top-left corner of the mosaic.")
103
104 #define BORDERW_TEXT N_("Border width")
105 #define BORDERW_LONGTEXT N_( \
106 "Width in pixels of the border between miniatures." )
107 #define BORDERH_TEXT N_("Border height")
108 #define BORDERH_LONGTEXT N_( \
109 "Height in pixels of the border between miniatures." )
110
111 #define ALIGN_TEXT N_("Mosaic alignment" )
112 #define ALIGN_LONGTEXT N_( \
113 "You can enforce the mosaic alignment on the video " \
114 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
115 "also use combinations of these values, eg 6 = top-right).")
116
117 #define POS_TEXT N_("Positioning method")
118 #define POS_LONGTEXT N_( \
119 "Positioning method for the mosaic. auto: " \
120 "automatically choose the best number of rows and columns. " \
121 "fixed: use the user-defined number of rows and columns. " \
122 "offsets: use the user-defined offsets for each image." )
123
124 #define ROWS_TEXT N_("Number of rows")
125 #define ROWS_LONGTEXT N_( \
126 "Number of image rows in the mosaic (only used if " \
127 "positioning method is set to \"fixed\")." )
128
129 #define COLS_TEXT N_("Number of columns")
130 #define COLS_LONGTEXT N_( \
131 "Number of image columns in the mosaic (only used if " \
132 "positioning method is set to \"fixed\")." )
133
134 #define AR_TEXT N_("Keep aspect ratio")
135 #define AR_LONGTEXT N_( \
136 "Keep the original aspect ratio when resizing " \
137 "mosaic elements." )
138 #define KEEP_TEXT N_("Keep original size")
139 #define KEEP_LONGTEXT N_( \
140 "Keep the original size of mosaic elements." )
141
142 #define ORDER_TEXT N_("Elements order" )
143 #define ORDER_LONGTEXT N_( \
144 "You can enforce the order of the elements on " \
145 "the mosaic. You must give a comma-separated list of picture ID(s). " \
146 "These IDs are assigned in the \"mosaic-bridge\" module." )
147
148 #define OFFSETS_TEXT N_("Offsets in order" )
149 #define OFFSETS_LONGTEXT N_( \
150 "You can enforce the (x,y) offsets of the elements on the mosaic " \
151 "(only used if positioning method is set to \"offsets\"). You " \
152 "must give a comma-separated list of coordinates (eg: 10,10,150,10)." )
153
154 #define DELAY_TEXT N_("Delay")
155 #define DELAY_LONGTEXT N_( \
156 "Pictures coming from the mosaic elements will be delayed " \
157 "according to this value (in milliseconds). For high " \
158 "values you will need to raise caching at input.")
159
160 enum
161 {
162 position_auto = 0, position_fixed = 1, position_offsets = 2
163 };
164 static const int pi_pos_values[] = { 0, 1, 2 };
165 static const char *const ppsz_pos_descriptions[] =
166 { N_("auto"), N_("fixed"), N_("offsets") };
167
168 static const int pi_align_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
169 static const char *const ppsz_align_descriptions[] =
170 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
171 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
172
173 #define CFG_PREFIX "mosaic-"
174
175 vlc_module_begin ()
176 set_description( N_("Mosaic video sub source") )
177 set_shortname( N_("Mosaic") )
178 set_category( CAT_VIDEO )
179 set_subcategory( SUBCAT_VIDEO_SUBPIC)
180 set_capability( "sub source", 0 )
181 set_callbacks( CreateFilter, DestroyFilter )
182
183 add_integer_with_range( CFG_PREFIX "alpha", 255, 0, 255,
184 ALPHA_TEXT, ALPHA_LONGTEXT, false )
185
186 add_integer( CFG_PREFIX "height", 100,
187 HEIGHT_TEXT, HEIGHT_LONGTEXT, false )
188 add_integer( CFG_PREFIX "width", 100,
189 WIDTH_TEXT, WIDTH_LONGTEXT, false )
190
191 add_integer( CFG_PREFIX "align", 5,
192 ALIGN_TEXT, ALIGN_LONGTEXT, true)
193 change_integer_list( pi_align_values, ppsz_align_descriptions )
194
195 add_integer( CFG_PREFIX "xoffset", 0,
196 XOFFSET_TEXT, XOFFSET_LONGTEXT, true )
197 add_integer( CFG_PREFIX "yoffset", 0,
198 YOFFSET_TEXT, YOFFSET_LONGTEXT, true )
199
200 add_integer( CFG_PREFIX "borderw", 0,
201 BORDERW_TEXT, BORDERW_LONGTEXT, true )
202 add_integer( CFG_PREFIX "borderh", 0,
203 BORDERH_TEXT, BORDERH_LONGTEXT, true )
204
205 add_integer( CFG_PREFIX "position", 0,
206 POS_TEXT, POS_LONGTEXT, false )
207 change_integer_list( pi_pos_values, ppsz_pos_descriptions )
208 add_integer( CFG_PREFIX "rows", 2,
209 ROWS_TEXT, ROWS_LONGTEXT, false )
210 add_integer( CFG_PREFIX "cols", 2,
211 COLS_TEXT, COLS_LONGTEXT, false )
212
213 add_bool( CFG_PREFIX "keep-aspect-ratio", false,
214 AR_TEXT, AR_LONGTEXT, false )
215 add_bool( CFG_PREFIX "keep-picture", false,
216 KEEP_TEXT, KEEP_LONGTEXT, false )
217
218 add_string( CFG_PREFIX "order", "",
219 ORDER_TEXT, ORDER_LONGTEXT, false )
220
221 add_string( CFG_PREFIX "offsets", "",
222 OFFSETS_TEXT, OFFSETS_LONGTEXT, false )
223
224 add_integer( CFG_PREFIX "delay", 0, DELAY_TEXT, DELAY_LONGTEXT,
225 false )
226 vlc_module_end ()
227
228 static const char *const ppsz_filter_options[] = {
229 "alpha", "height", "width", "align", "xoffset", "yoffset",
230 "borderw", "borderh", "position", "rows", "cols",
231 "keep-aspect-ratio", "keep-picture", "order", "offsets",
232 "delay", NULL
233 };
234
235 /*****************************************************************************
236 * mosaic_ParseSetOffsets:
237 * parse the "--mosaic-offsets x1,y1,x2,y2,x3,y3" parameter
238 * and set the corresponding struct filter_sys_t entries.
239 *****************************************************************************/
mosaic_ParseSetOffsets(vlc_object_t * p_this,filter_sys_t * p_sys,char * psz_offsets)240 static void mosaic_ParseSetOffsets( vlc_object_t *p_this,
241 filter_sys_t *p_sys,
242 char *psz_offsets )
243 {
244 if( *psz_offsets )
245 {
246 char *psz_end = NULL;
247 int i_index = 0;
248 do
249 {
250 i_index++;
251
252 p_sys->pi_x_offsets = xrealloc( p_sys->pi_x_offsets,
253 i_index * sizeof(int) );
254 p_sys->pi_x_offsets[i_index - 1] = atoi( psz_offsets );
255 psz_end = strchr( psz_offsets, ',' );
256 psz_offsets = psz_end + 1;
257
258 p_sys->pi_y_offsets = xrealloc( p_sys->pi_y_offsets,
259 i_index * sizeof(int) );
260 p_sys->pi_y_offsets[i_index - 1] = atoi( psz_offsets );
261 psz_end = strchr( psz_offsets, ',' );
262 psz_offsets = psz_end + 1;
263
264 msg_Dbg( p_this, CFG_PREFIX "offset: id %d, x=%d, y=%d",
265 i_index, p_sys->pi_x_offsets[i_index - 1],
266 p_sys->pi_y_offsets[i_index - 1] );
267
268 } while( psz_end );
269 p_sys->i_offsets_length = i_index;
270 }
271 }
272 #define mosaic_ParseSetOffsets( a, b, c ) \
273 mosaic_ParseSetOffsets( VLC_OBJECT( a ), b, c )
274
275 /*****************************************************************************
276 * CreateFiler: allocate mosaic video filter
277 *****************************************************************************/
CreateFilter(vlc_object_t * p_this)278 static int CreateFilter( vlc_object_t *p_this )
279 {
280 filter_t *p_filter = (filter_t *)p_this;
281 filter_sys_t *p_sys;
282 char *psz_order, *_psz_order;
283 char *psz_offsets;
284 int i_index;
285 int i_command;
286
287 /* Allocate structure */
288 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
289 if( p_sys == NULL )
290 return VLC_ENOMEM;
291
292 p_filter->pf_sub_source = Filter;
293
294 vlc_mutex_init( &p_sys->lock );
295 vlc_mutex_lock( &p_sys->lock );
296
297 config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
298 p_filter->p_cfg );
299
300 #define GET_VAR( name, min, max ) \
301 i_command = var_CreateGetIntegerCommand( p_filter, CFG_PREFIX #name ); \
302 p_sys->i_##name = VLC_CLIP( i_command, min, max ); \
303 var_AddCallback( p_filter, CFG_PREFIX #name, MosaicCallback, p_sys );
304
305 GET_VAR( width, 0, INT_MAX );
306 GET_VAR( height, 0, INT_MAX );
307 GET_VAR( xoffset, 0, INT_MAX );
308 GET_VAR( yoffset, 0, INT_MAX );
309
310 GET_VAR( align, 0, 10 );
311 if( p_sys->i_align == 3 || p_sys->i_align == 7 )
312 p_sys->i_align = 5;
313
314 GET_VAR( borderw, 0, INT_MAX );
315 GET_VAR( borderh, 0, INT_MAX );
316 GET_VAR( rows, 1, INT_MAX );
317 GET_VAR( cols, 1, INT_MAX );
318 GET_VAR( alpha, 0, 255 );
319 GET_VAR( position, 0, 2 );
320 GET_VAR( delay, 100, INT_MAX );
321 #undef GET_VAR
322 p_sys->i_delay *= 1000;
323
324 p_sys->b_ar = var_CreateGetBoolCommand( p_filter,
325 CFG_PREFIX "keep-aspect-ratio" );
326 var_AddCallback( p_filter, CFG_PREFIX "keep-aspect-ratio", MosaicCallback,
327 p_sys );
328
329 p_sys->b_keep = var_CreateGetBoolCommand( p_filter,
330 CFG_PREFIX "keep-picture" );
331 if ( !p_sys->b_keep )
332 {
333 p_sys->p_image = image_HandlerCreate( p_filter );
334 }
335
336 p_sys->i_order_length = 0;
337 p_sys->ppsz_order = NULL;
338 psz_order = var_CreateGetStringCommand( p_filter, CFG_PREFIX "order" );
339 _psz_order = psz_order;
340 var_AddCallback( p_filter, CFG_PREFIX "order", MosaicCallback, p_sys );
341
342 if( *psz_order )
343 {
344 char *psz_end = NULL;
345 i_index = 0;
346 do
347 {
348 psz_end = strchr( psz_order, ',' );
349 i_index++;
350 p_sys->ppsz_order = xrealloc( p_sys->ppsz_order,
351 i_index * sizeof(char *) );
352 p_sys->ppsz_order[i_index - 1] = strndup( psz_order,
353 psz_end - psz_order );
354 psz_order = psz_end+1;
355 } while( psz_end );
356 p_sys->i_order_length = i_index;
357 }
358
359 free( _psz_order );
360
361 /* Manage specific offsets for substreams */
362 psz_offsets = var_CreateGetStringCommand( p_filter, CFG_PREFIX "offsets" );
363 p_sys->i_offsets_length = 0;
364 p_sys->pi_x_offsets = NULL;
365 p_sys->pi_y_offsets = NULL;
366 mosaic_ParseSetOffsets( p_filter, p_sys, psz_offsets );
367 free( psz_offsets );
368 var_AddCallback( p_filter, CFG_PREFIX "offsets", MosaicCallback, p_sys );
369
370 vlc_mutex_unlock( &p_sys->lock );
371
372 return VLC_SUCCESS;
373 }
374
375 /*****************************************************************************
376 * DestroyFilter: destroy mosaic video filter
377 *****************************************************************************/
DestroyFilter(vlc_object_t * p_this)378 static void DestroyFilter( vlc_object_t *p_this )
379 {
380 filter_t *p_filter = (filter_t*)p_this;
381 filter_sys_t *p_sys = p_filter->p_sys;
382
383 #define DEL_CB( name ) \
384 var_DelCallback( p_filter, CFG_PREFIX #name, MosaicCallback, p_sys )
385 DEL_CB( width );
386 DEL_CB( height );
387 DEL_CB( xoffset );
388 DEL_CB( yoffset );
389
390 DEL_CB( align );
391
392 DEL_CB( borderw );
393 DEL_CB( borderh );
394 DEL_CB( rows );
395 DEL_CB( cols );
396 DEL_CB( alpha );
397 DEL_CB( position );
398 DEL_CB( delay );
399
400 DEL_CB( keep-aspect-ratio );
401 DEL_CB( order );
402 #undef DEL_CB
403
404 if( !p_sys->b_keep )
405 {
406 image_HandlerDelete( p_sys->p_image );
407 }
408
409 if( p_sys->i_order_length )
410 {
411 for( int i_index = 0; i_index < p_sys->i_order_length; i_index++ )
412 {
413 free( p_sys->ppsz_order[i_index] );
414 }
415 free( p_sys->ppsz_order );
416 }
417 if( p_sys->i_offsets_length )
418 {
419 free( p_sys->pi_x_offsets );
420 free( p_sys->pi_y_offsets );
421 p_sys->i_offsets_length = 0;
422 }
423
424 vlc_mutex_destroy( &p_sys->lock );
425 free( p_sys );
426 }
427
428 /*****************************************************************************
429 * Filter
430 *****************************************************************************/
Filter(filter_t * p_filter,mtime_t date)431 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
432 {
433 filter_sys_t *p_sys = p_filter->p_sys;
434 bridge_t *p_bridge;
435
436 int i_real_index, i_row, i_col;
437 int i_greatest_real_index_used = p_sys->i_order_length - 1;
438
439 unsigned int col_inner_width, row_inner_height;
440
441 subpicture_region_t *p_region;
442 subpicture_region_t *p_region_prev = NULL;
443
444 /* Allocate the subpicture internal data. */
445 subpicture_t *p_spu = filter_NewSubpicture( p_filter );
446 if( !p_spu )
447 return NULL;
448
449 /* Initialize subpicture */
450 p_spu->i_channel = 0;
451 p_spu->i_start = date;
452 p_spu->i_stop = 0;
453 p_spu->b_ephemer = true;
454 p_spu->i_alpha = p_sys->i_alpha;
455 p_spu->b_absolute = false;
456
457 p_spu->i_original_picture_width = p_sys->i_width;
458 p_spu->i_original_picture_height = p_sys->i_height;
459
460 vlc_mutex_lock( &p_sys->lock );
461 vlc_global_lock( VLC_MOSAIC_MUTEX );
462
463 p_bridge = GetBridge( p_filter );
464 if ( p_bridge == NULL )
465 {
466 vlc_global_unlock( VLC_MOSAIC_MUTEX );
467 vlc_mutex_unlock( &p_sys->lock );
468 return p_spu;
469 }
470
471 if ( p_sys->i_position == position_offsets )
472 {
473 /* If we have either too much or not enough offsets, fall-back
474 * to automatic positioning. */
475 if ( p_sys->i_offsets_length != p_sys->i_order_length )
476 {
477 msg_Err( p_filter,
478 "Number of specified offsets (%d) does not match number "
479 "of input substreams in mosaic-order (%d), falling back "
480 "to mosaic-position=0",
481 p_sys->i_offsets_length, p_sys->i_order_length );
482 p_sys->i_position = position_auto;
483 }
484 }
485
486 if ( p_sys->i_position == position_auto )
487 {
488 int i_numpics = p_sys->i_order_length; /* keep slots and all */
489 for( int i_index = 0; i_index < p_bridge->i_es_num; i_index++ )
490 {
491 bridged_es_t *p_es = p_bridge->pp_es[i_index];
492 if ( !p_es->b_empty )
493 {
494 i_numpics ++;
495 if( p_sys->i_order_length && p_es->psz_id != NULL )
496 {
497 /* We also want to leave slots for images given in
498 * mosaic-order that are not available in p_vout_picture */
499 for( int i = 0; i < p_sys->i_order_length ; i++ )
500 {
501 if( !strcmp( p_sys->ppsz_order[i], p_es->psz_id ) )
502 {
503 i_numpics--;
504 break;
505 }
506 }
507
508 }
509 }
510 }
511 p_sys->i_rows = ceil(sqrt( (double)i_numpics ));
512 p_sys->i_cols = ( i_numpics % p_sys->i_rows == 0 ?
513 i_numpics / p_sys->i_rows :
514 i_numpics / p_sys->i_rows + 1 );
515 }
516
517 col_inner_width = ( ( p_sys->i_width - ( p_sys->i_cols - 1 )
518 * p_sys->i_borderw ) / p_sys->i_cols );
519 row_inner_height = ( ( p_sys->i_height - ( p_sys->i_rows - 1 )
520 * p_sys->i_borderh ) / p_sys->i_rows );
521
522 i_real_index = 0;
523
524 for( int i_index = 0; i_index < p_bridge->i_es_num; i_index++ )
525 {
526 bridged_es_t *p_es = p_bridge->pp_es[i_index];
527 video_format_t fmt_in, fmt_out;
528 picture_t *p_converted;
529
530 if ( p_es->b_empty )
531 continue;
532
533 while ( p_es->p_picture != NULL
534 && p_es->p_picture->date + p_sys->i_delay < date )
535 {
536 if ( p_es->p_picture->p_next != NULL )
537 {
538 picture_t *p_next = p_es->p_picture->p_next;
539 picture_Release( p_es->p_picture );
540 p_es->p_picture = p_next;
541 }
542 else if ( p_es->p_picture->date + p_sys->i_delay + BLANK_DELAY <
543 date )
544 {
545 /* Display blank */
546 picture_Release( p_es->p_picture );
547 p_es->p_picture = NULL;
548 p_es->pp_last = &p_es->p_picture;
549 break;
550 }
551 else
552 {
553 msg_Dbg( p_filter, "too late picture for %s (%"PRId64 ")",
554 p_es->psz_id,
555 date - p_es->p_picture->date - p_sys->i_delay );
556 break;
557 }
558 }
559
560 if ( p_es->p_picture == NULL )
561 continue;
562
563 if ( p_sys->i_order_length == 0 )
564 {
565 i_real_index++;
566 }
567 else
568 {
569 int i;
570 for ( i = 0; i <= p_sys->i_order_length; i++ )
571 {
572 if ( i == p_sys->i_order_length ) break;
573 if ( strcmp( p_es->psz_id, p_sys->ppsz_order[i] ) == 0 )
574 {
575 i_real_index = i;
576 break;
577 }
578 }
579 if ( i == p_sys->i_order_length )
580 i_real_index = ++i_greatest_real_index_used;
581 }
582 i_row = ( i_real_index / p_sys->i_cols ) % p_sys->i_rows;
583 i_col = i_real_index % p_sys->i_cols ;
584
585 video_format_Init( &fmt_in, 0 );
586 video_format_Init( &fmt_out, 0 );
587
588 if ( !p_sys->b_keep )
589 {
590 /* Convert the images */
591 fmt_in.i_chroma = p_es->p_picture->format.i_chroma;
592 fmt_in.i_height = p_es->p_picture->format.i_height;
593 fmt_in.i_width = p_es->p_picture->format.i_width;
594
595 if( fmt_in.i_chroma == VLC_CODEC_YUVA ||
596 fmt_in.i_chroma == VLC_CODEC_RGBA )
597 fmt_out.i_chroma = VLC_CODEC_YUVA;
598 else
599 fmt_out.i_chroma = VLC_CODEC_I420;
600 fmt_out.i_width = col_inner_width;
601 fmt_out.i_height = row_inner_height;
602
603 if( p_sys->b_ar ) /* keep aspect ratio */
604 {
605 if( (float)fmt_out.i_width / (float)fmt_out.i_height
606 > (float)fmt_in.i_width / (float)fmt_in.i_height )
607 {
608 fmt_out.i_width = ( fmt_out.i_height * fmt_in.i_width )
609 / fmt_in.i_height;
610 }
611 else
612 {
613 fmt_out.i_height = ( fmt_out.i_width * fmt_in.i_height )
614 / fmt_in.i_width;
615 }
616 }
617
618 fmt_out.i_visible_width = fmt_out.i_width;
619 fmt_out.i_visible_height = fmt_out.i_height;
620
621 p_converted = image_Convert( p_sys->p_image, p_es->p_picture,
622 &fmt_in, &fmt_out );
623 if( !p_converted )
624 {
625 msg_Warn( p_filter,
626 "image resizing and chroma conversion failed" );
627 video_format_Clean( &fmt_in );
628 video_format_Clean( &fmt_out );
629 continue;
630 }
631 }
632 else
633 {
634 p_converted = p_es->p_picture;
635 fmt_in.i_width = fmt_out.i_width = p_converted->format.i_width;
636 fmt_in.i_height = fmt_out.i_height = p_converted->format.i_height;
637 fmt_in.i_chroma = fmt_out.i_chroma = p_converted->format.i_chroma;
638 fmt_out.i_visible_width = fmt_out.i_width;
639 fmt_out.i_visible_height = fmt_out.i_height;
640 }
641
642 p_region = subpicture_region_New( &fmt_out );
643 /* FIXME the copy is probably not needed anymore */
644 if( p_region )
645 picture_Copy( p_region->p_picture, p_converted );
646 if( !p_sys->b_keep )
647 picture_Release( p_converted );
648
649 if( !p_region )
650 {
651 video_format_Clean( &fmt_in );
652 video_format_Clean( &fmt_out );
653 msg_Err( p_filter, "cannot allocate SPU region" );
654 subpicture_Delete( p_spu );
655 vlc_global_unlock( VLC_MOSAIC_MUTEX );
656 vlc_mutex_unlock( &p_sys->lock );
657 return NULL;
658 }
659
660 if( p_es->i_x >= 0 && p_es->i_y >= 0 )
661 {
662 p_region->i_x = p_es->i_x;
663 p_region->i_y = p_es->i_y;
664 }
665 else if( p_sys->i_position == position_offsets )
666 {
667 p_region->i_x = p_sys->pi_x_offsets[i_real_index];
668 p_region->i_y = p_sys->pi_y_offsets[i_real_index];
669 }
670 else
671 {
672 if( fmt_out.i_width > col_inner_width ||
673 p_sys->b_ar || p_sys->b_keep )
674 {
675 /* we don't have to center the video since it takes the
676 whole rectangle area or it's larger than the rectangle */
677 p_region->i_x = p_sys->i_xoffset
678 + i_col * ( p_sys->i_width / p_sys->i_cols )
679 + ( i_col * p_sys->i_borderw ) / p_sys->i_cols;
680 }
681 else
682 {
683 /* center the video in the dedicated rectangle */
684 p_region->i_x = p_sys->i_xoffset
685 + i_col * ( p_sys->i_width / p_sys->i_cols )
686 + ( i_col * p_sys->i_borderw ) / p_sys->i_cols
687 + ( col_inner_width - fmt_out.i_width ) / 2;
688 }
689
690 if( fmt_out.i_height > row_inner_height
691 || p_sys->b_ar || p_sys->b_keep )
692 {
693 /* we don't have to center the video since it takes the
694 whole rectangle area or it's taller than the rectangle */
695 p_region->i_y = p_sys->i_yoffset
696 + i_row * ( p_sys->i_height / p_sys->i_rows )
697 + ( i_row * p_sys->i_borderh ) / p_sys->i_rows;
698 }
699 else
700 {
701 /* center the video in the dedicated rectangle */
702 p_region->i_y = p_sys->i_yoffset
703 + i_row * ( p_sys->i_height / p_sys->i_rows )
704 + ( i_row * p_sys->i_borderh ) / p_sys->i_rows
705 + ( row_inner_height - fmt_out.i_height ) / 2;
706 }
707 }
708 p_region->i_align = p_sys->i_align;
709 p_region->i_alpha = p_es->i_alpha;
710
711 if( p_region_prev == NULL )
712 {
713 p_spu->p_region = p_region;
714 }
715 else
716 {
717 p_region_prev->p_next = p_region;
718 }
719
720 video_format_Clean( &fmt_in );
721 video_format_Clean( &fmt_out );
722
723 p_region_prev = p_region;
724 }
725
726 vlc_global_unlock( VLC_MOSAIC_MUTEX );
727 vlc_mutex_unlock( &p_sys->lock );
728
729 return p_spu;
730 }
731
732 /*****************************************************************************
733 * Callback to update params on the fly
734 *****************************************************************************/
MosaicCallback(vlc_object_t * p_this,char const * psz_var,vlc_value_t oldval,vlc_value_t newval,void * p_data)735 static int MosaicCallback( vlc_object_t *p_this, char const *psz_var,
736 vlc_value_t oldval, vlc_value_t newval,
737 void *p_data )
738 {
739 VLC_UNUSED(oldval);
740 filter_sys_t *p_sys = (filter_sys_t *) p_data;
741
742 #define VAR_IS( a ) !strcmp( psz_var, CFG_PREFIX a )
743 if( VAR_IS( "alpha" ) )
744 {
745 vlc_mutex_lock( &p_sys->lock );
746 msg_Dbg( p_this, "changing alpha from %d/255 to %d/255",
747 p_sys->i_alpha, (int)newval.i_int);
748 p_sys->i_alpha = VLC_CLIP( newval.i_int, 0, 255 );
749 vlc_mutex_unlock( &p_sys->lock );
750 }
751 else if( VAR_IS( "height" ) )
752 {
753 vlc_mutex_lock( &p_sys->lock );
754 msg_Dbg( p_this, "changing height from %dpx to %dpx",
755 p_sys->i_height, (int)newval.i_int );
756 p_sys->i_height = __MAX( newval.i_int, 0 );
757 vlc_mutex_unlock( &p_sys->lock );
758 }
759 else if( VAR_IS( "width" ) )
760 {
761 vlc_mutex_lock( &p_sys->lock );
762 msg_Dbg( p_this, "changing width from %dpx to %dpx",
763 p_sys->i_width, (int)newval.i_int );
764 p_sys->i_width = __MAX( newval.i_int, 0 );
765 vlc_mutex_unlock( &p_sys->lock );
766 }
767 else if( VAR_IS( "xoffset" ) )
768 {
769 vlc_mutex_lock( &p_sys->lock );
770 msg_Dbg( p_this, "changing x offset from %dpx to %dpx",
771 p_sys->i_xoffset, (int)newval.i_int );
772 p_sys->i_xoffset = __MAX( newval.i_int, 0 );
773 vlc_mutex_unlock( &p_sys->lock );
774 }
775 else if( VAR_IS( "yoffset" ) )
776 {
777 vlc_mutex_lock( &p_sys->lock );
778 msg_Dbg( p_this, "changing y offset from %dpx to %dpx",
779 p_sys->i_yoffset, (int)newval.i_int );
780 p_sys->i_yoffset = __MAX( newval.i_int, 0 );
781 vlc_mutex_unlock( &p_sys->lock );
782 }
783 else if( VAR_IS( "align" ) )
784 {
785 int i_old = 0, i_new = 0;
786 vlc_mutex_lock( &p_sys->lock );
787 newval.i_int = VLC_CLIP( newval.i_int, 0, 10 );
788 if( newval.i_int == 3 || newval.i_int == 7 )
789 newval.i_int = 5;
790 while( pi_align_values[i_old] != p_sys->i_align ) i_old++;
791 while( pi_align_values[i_new] != newval.i_int ) i_new++;
792 msg_Dbg( p_this, "changing alignment from %d (%s) to %d (%s)",
793 p_sys->i_align, ppsz_align_descriptions[i_old],
794 (int)newval.i_int, ppsz_align_descriptions[i_new] );
795 p_sys->i_align = newval.i_int;
796 vlc_mutex_unlock( &p_sys->lock );
797 }
798 else if( VAR_IS( "borderw" ) )
799 {
800 vlc_mutex_lock( &p_sys->lock );
801 msg_Dbg( p_this, "changing border width from %dpx to %dpx",
802 p_sys->i_borderw, (int)newval.i_int );
803 p_sys->i_borderw = __MAX( newval.i_int, 0 );
804 vlc_mutex_unlock( &p_sys->lock );
805 }
806 else if( VAR_IS( "borderh" ) )
807 {
808 vlc_mutex_lock( &p_sys->lock );
809 msg_Dbg( p_this, "changing border height from %dpx to %dpx",
810 p_sys->i_borderh, (int)newval.i_int );
811 p_sys->i_borderh = __MAX( newval.i_int, 0 );
812 vlc_mutex_unlock( &p_sys->lock );
813 }
814 else if( VAR_IS( "position" ) )
815 {
816 if( newval.i_int > 2 || newval.i_int < 0 )
817 {
818 msg_Err( p_this,
819 "Position is either 0 (%s), 1 (%s) or 2 (%s)",
820 ppsz_pos_descriptions[0],
821 ppsz_pos_descriptions[1],
822 ppsz_pos_descriptions[2] );
823 }
824 else
825 {
826 vlc_mutex_lock( &p_sys->lock );
827 msg_Dbg( p_this, "changing position method from %d (%s) to %d (%s)",
828 p_sys->i_position, ppsz_pos_descriptions[p_sys->i_position],
829 (int)newval.i_int, ppsz_pos_descriptions[newval.i_int]);
830 p_sys->i_position = newval.i_int;
831 vlc_mutex_unlock( &p_sys->lock );
832 }
833 }
834 else if( VAR_IS( "rows" ) )
835 {
836 vlc_mutex_lock( &p_sys->lock );
837 msg_Dbg( p_this, "changing number of rows from %d to %d",
838 p_sys->i_rows, (int)newval.i_int );
839 p_sys->i_rows = __MAX( newval.i_int, 1 );
840 vlc_mutex_unlock( &p_sys->lock );
841 }
842 else if( VAR_IS( "cols" ) )
843 {
844 vlc_mutex_lock( &p_sys->lock );
845 msg_Dbg( p_this, "changing number of columns from %d to %d",
846 p_sys->i_cols, (int)newval.i_int );
847 p_sys->i_cols = __MAX( newval.i_int, 1 );
848 vlc_mutex_unlock( &p_sys->lock );
849 }
850 else if( VAR_IS( "order" ) )
851 {
852 char *psz_order;
853 int i_index;
854 vlc_mutex_lock( &p_sys->lock );
855 msg_Dbg( p_this, "Changing mosaic order to %s", newval.psz_string );
856
857 psz_order = newval.psz_string;
858
859 while( p_sys->i_order_length-- )
860 {
861 free( p_sys->ppsz_order[p_sys->i_order_length] );
862 }
863 free( p_sys->ppsz_order );
864 p_sys->ppsz_order = NULL;
865
866 if( *psz_order )
867 {
868 char *psz_end = NULL;
869 i_index = 0;
870 do
871 {
872 psz_end = strchr( psz_order, ',' );
873 i_index++;
874 p_sys->ppsz_order = xrealloc( p_sys->ppsz_order,
875 i_index * sizeof(char *) );
876 p_sys->ppsz_order[i_index - 1] = strndup( psz_order,
877 psz_end - psz_order );
878 psz_order = psz_end+1;
879 } while( psz_end );
880 p_sys->i_order_length = i_index;
881 }
882
883 vlc_mutex_unlock( &p_sys->lock );
884 }
885 else if( VAR_IS( "offsets" ) )
886 {
887 vlc_mutex_lock( &p_sys->lock );
888 msg_Info( p_this, "Changing mosaic-offsets to %s", newval.psz_string );
889
890 if( p_sys->i_offsets_length != 0 )
891 {
892 p_sys->i_offsets_length = 0;
893 free( p_sys->pi_x_offsets );
894 free( p_sys->pi_y_offsets );
895 p_sys->pi_x_offsets = NULL;
896 p_sys->pi_y_offsets = NULL;
897 }
898
899 mosaic_ParseSetOffsets( p_this, p_sys, newval.psz_string );
900
901 vlc_mutex_unlock( &p_sys->lock );
902 }
903 else if( VAR_IS( "keep-aspect-ratio" ) )
904 {
905 vlc_mutex_lock( &p_sys->lock );
906 if( newval.i_int )
907 {
908 msg_Dbg( p_this, "keeping aspect ratio" );
909 p_sys->b_ar = 1;
910 }
911 else
912 {
913 msg_Dbg( p_this, "won't keep aspect ratio" );
914 p_sys->b_ar = 0;
915 }
916 vlc_mutex_unlock( &p_sys->lock );
917 }
918 else if( VAR_IS( "keep-picture" ) )
919 {
920 vlc_mutex_lock( &p_sys->lock );
921 p_sys->b_keep = newval.b_bool;
922 if ( !p_sys->b_keep && !p_sys->p_image )
923 {
924 p_sys->p_image = image_HandlerCreate( p_this );
925 }
926 vlc_mutex_unlock( &p_sys->lock );
927 }
928
929 return VLC_SUCCESS;
930 }
931