1 /*****************************************************************************
2 * mosaic.c : Mosaic video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2004-2005 VideoLAN
7 * Authors: Antoine Cellerier <dionoea@via.ecp.fr>
8 * Christophe Massiot <massiot@via.ecp.fr>
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.
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.
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
28 #include <stdlib.h> /* malloc(), free() */
36 # include <limits.h> /* INT_MAX */
39 #include "vlc_filter.h"
40 #include "vlc_image.h"
44 #define BLANK_DELAY I64C(1000000)
46 /*****************************************************************************
48 *****************************************************************************/
49 static int CreateFilter ( vlc_object_t * );
50 static void DestroyFilter ( vlc_object_t * );
52 static subpicture_t *Filter( filter_t *, mtime_t );
54 static int MosaicCallback( vlc_object_t *, char const *, vlc_value_t,
55 vlc_value_t, void * );
57 /*****************************************************************************
58 * filter_sys_t : filter descriptor
59 *****************************************************************************/
65 image_handler_t *p_image;
68 int i_position; /* mosaic positioning method */
69 vlc_bool_t b_ar; /* do we keep the aspect ratio ? */
70 vlc_bool_t b_keep; /* do we keep the original picture format ? */
71 int i_width, i_height; /* mosaic height and width */
72 int i_cols, i_rows; /* mosaic rows and cols */
73 int i_align; /* mosaic alignment in background video */
74 int i_xoffset, i_yoffset; /* top left corner offset */
75 int i_vborder, i_hborder; /* border width/height between miniatures */
76 int i_alpha; /* subfilter alpha blending */
78 char **ppsz_order; /* list of picture-id */
84 /*****************************************************************************
86 *****************************************************************************/
87 #define ALPHA_TEXT N_("Alpha blending")
88 #define ALPHA_LONGTEXT N_("Alpha blending (0 -> 255). Default is 255")
90 #define HEIGHT_TEXT N_("Height in pixels")
91 #define WIDTH_TEXT N_("Width in pixels")
92 #define XOFFSET_TEXT N_("Top left corner x coordinate")
93 #define YOFFSET_TEXT N_("Top left corner y coordinate")
94 #define VBORDER_TEXT N_("Vertical border width in pixels")
95 #define HBORDER_TEXT N_("Horizontal border width in pixels")
96 #define ALIGN_TEXT N_("Mosaic alignment")
98 #define POS_TEXT N_("Positioning method")
99 #define POS_LONGTEXT N_("Positioning method. auto : automatically choose " \
100 "the best number of rows and columns. fixed : use the user-defined " \
101 "number of rows and columns.")
102 #define ROWS_TEXT N_("Number of rows")
103 #define COLS_TEXT N_("Number of columns")
104 #define AR_TEXT N_("Keep aspect ratio when resizing")
105 #define KEEP_TEXT N_("Keep original size")
107 #define ORDER_TEXT N_("Order as a comma separated list of picture-id(s)")
109 #define DELAY_TEXT N_("Delay")
110 #define DELAY_LONGTEXT N_("Pictures coming from the picture video outputs " \
111 "will be delayed accordingly (in milliseconds). For high " \
112 "values you will need to raise file-caching and others.")
114 static int pi_pos_values[] = { 0, 1 };
115 static char * ppsz_pos_descriptions[] =
116 { N_("auto"), N_("fixed") };
118 static int pi_align_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
119 static char *ppsz_align_descriptions[] =
120 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
121 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
125 set_description( N_("Mosaic video sub filter") );
126 set_shortname( N_("Mosaic") );
127 /* Leave this commented as long as the VLM intf in wx isn't available
128 set_category( CAT_VIDEO );
129 set_subcategory( SUBCAT_VIDEO_SUBPIC);*/
130 set_capability( "sub filter", 0 );
131 set_callbacks( CreateFilter, DestroyFilter );
133 add_integer( "mosaic-alpha", 255, NULL, ALPHA_TEXT, ALPHA_LONGTEXT, VLC_FALSE );
134 add_integer( "mosaic-height", 100, NULL, HEIGHT_TEXT, HEIGHT_TEXT, VLC_FALSE );
135 add_integer( "mosaic-width", 100, NULL, WIDTH_TEXT, WIDTH_TEXT, VLC_FALSE );
136 add_integer( "mosaic-align", 5, NULL, ALIGN_TEXT, ALIGN_TEXT, VLC_TRUE);
137 change_integer_list( pi_align_values, ppsz_align_descriptions, 0 );
138 add_integer( "mosaic-xoffset", 0, NULL, XOFFSET_TEXT, XOFFSET_TEXT, VLC_TRUE );
139 add_integer( "mosaic-yoffset", 0, NULL, YOFFSET_TEXT, YOFFSET_TEXT, VLC_TRUE );
140 add_integer( "mosaic-vborder", 0, NULL, VBORDER_TEXT, VBORDER_TEXT, VLC_TRUE );
141 add_integer( "mosaic-hborder", 0, NULL, HBORDER_TEXT, HBORDER_TEXT, VLC_TRUE );
143 add_integer( "mosaic-position", 0, NULL, POS_TEXT, POS_LONGTEXT, VLC_FALSE );
144 change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
145 add_integer( "mosaic-rows", 2, NULL, ROWS_TEXT, ROWS_TEXT, VLC_FALSE );
146 add_integer( "mosaic-cols", 2, NULL, COLS_TEXT, COLS_TEXT, VLC_FALSE );
147 add_bool( "mosaic-keep-aspect-ratio", 0, NULL, AR_TEXT, AR_TEXT, VLC_FALSE );
148 add_bool( "mosaic-keep-picture", 0, NULL, KEEP_TEXT, KEEP_TEXT, VLC_FALSE );
149 add_string( "mosaic-order", "", NULL, ORDER_TEXT, ORDER_TEXT, VLC_FALSE );
151 add_integer( "mosaic-delay", 0, NULL, DELAY_TEXT, DELAY_LONGTEXT,
154 var_Create( p_module->p_libvlc, "mosaic-lock", VLC_VAR_MUTEX );
158 /*****************************************************************************
159 * CreateFiler: allocate mosaic video filter
160 *****************************************************************************/
161 static int CreateFilter( vlc_object_t *p_this )
163 filter_t *p_filter = (filter_t *)p_this;
165 libvlc_t *p_libvlc = p_filter->p_libvlc;
170 /* The mosaic thread is more important than the decoder threads */
171 vlc_thread_set_priority( p_this, VLC_THREAD_PRIORITY_OUTPUT );
173 /* Allocate structure */
174 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
177 msg_Err( p_filter, "out of memory" );
181 p_filter->pf_sub_filter = Filter;
184 vlc_mutex_init( p_filter, &p_sys->lock );
185 vlc_mutex_lock( &p_sys->lock );
187 var_Get( p_libvlc, "mosaic-lock", &val );
188 p_sys->p_lock = val.p_address;
190 #define GET_VAR( name, min, max ) \
191 p_sys->i_##name = __MIN( max, __MAX( min, \
192 var_CreateGetInteger( p_filter, "mosaic-" #name ) ) ); \
193 var_Destroy( p_filter, "mosaic-" #name ); \
194 var_Create( p_libvlc, "mosaic-" #name, VLC_VAR_INTEGER ); \
195 var_SetInteger( p_libvlc, "mosaic-" #name, p_sys->i_##name ); \
196 var_AddCallback( p_libvlc, "mosaic-" #name, MosaicCallback, p_sys );
198 GET_VAR( width, 0, INT_MAX );
199 GET_VAR( height, 0, INT_MAX );
200 GET_VAR( xoffset, 0, INT_MAX );
201 GET_VAR( yoffset, 0, INT_MAX );
203 p_sys->i_align = __MIN( 10, __MAX( 0, var_CreateGetInteger( p_filter, "mosaic-align" ) ) );
204 if( p_sys->i_align == 3 || p_sys->i_align == 7 )
206 var_Destroy( p_filter, "mosaic-align" );
207 var_Create( p_libvlc, "mosaic-align", VLC_VAR_INTEGER );
208 var_SetInteger( p_libvlc, "mosaic-align", p_sys->i_align );
209 var_AddCallback( p_libvlc, "mosaic-align", MosaicCallback, p_sys );
211 GET_VAR( vborder, 0, INT_MAX );
212 GET_VAR( hborder, 0, INT_MAX );
213 GET_VAR( rows, 1, INT_MAX );
214 GET_VAR( cols, 1, INT_MAX );
215 GET_VAR( alpha, 0, 255 );
216 GET_VAR( position, 0, 1 );
217 GET_VAR( delay, 100, INT_MAX );
218 p_sys->i_delay *= 1000;
220 p_sys->b_ar = var_CreateGetBool( p_filter, "mosaic-keep-aspect-ratio" );
221 var_Destroy( p_filter, "mosaic-keep-aspect-ratio" );
222 var_Create( p_libvlc, "mosaic-keep-aspect-ratio", VLC_VAR_INTEGER );
223 var_SetBool( p_libvlc, "mosaic-keep-aspect-ratio", p_sys->b_ar );
224 var_AddCallback( p_libvlc, "mosaic-keep-aspect-ratio", MosaicCallback,
227 p_sys->b_keep = var_CreateGetBool( p_filter, "mosaic-keep-picture" );
228 if ( !p_sys->b_keep )
230 p_sys->p_image = image_HandlerCreate( p_filter );
233 p_sys->i_order_length = 0;
234 p_sys->ppsz_order = NULL;
235 psz_order = var_CreateGetString( p_filter, "mosaic-order" );
237 if( psz_order[0] != 0 )
239 char *psz_end = NULL;
243 psz_end = strchr( psz_order, ',' );
245 p_sys->ppsz_order = realloc( p_sys->ppsz_order,
246 i_index * sizeof(char *) );
247 p_sys->ppsz_order[i_index - 1] = strndup( psz_order,
248 psz_end - psz_order );
249 psz_order = psz_end+1;
250 } while( NULL != psz_end );
251 p_sys->i_order_length = i_index;
254 vlc_mutex_unlock( &p_sys->lock );
259 /*****************************************************************************
260 * DestroyFilter: destroy mosaic video filter
261 *****************************************************************************/
262 static void DestroyFilter( vlc_object_t *p_this )
264 filter_t *p_filter = (filter_t*)p_this;
265 filter_sys_t *p_sys = p_filter->p_sys;
266 libvlc_t *p_libvlc = p_filter->p_libvlc;
269 vlc_mutex_lock( &p_sys->lock );
273 image_HandlerDelete( p_sys->p_image );
276 if( p_sys->i_order_length )
278 for( i_index = 0; i_index < p_sys->i_order_length; i_index++ )
280 free( p_sys->ppsz_order[i_index] );
282 free( p_sys->ppsz_order );
285 var_Destroy( p_libvlc, "mosaic-alpha" );
286 var_Destroy( p_libvlc, "mosaic-height" );
287 var_Destroy( p_libvlc, "mosaic-align" );
288 var_Destroy( p_libvlc, "mosaic-width" );
289 var_Destroy( p_libvlc, "mosaic-xoffset" );
290 var_Destroy( p_libvlc, "mosaic-yoffset" );
291 var_Destroy( p_libvlc, "mosaic-vborder" );
292 var_Destroy( p_libvlc, "mosaic-hborder" );
293 var_Destroy( p_libvlc, "mosaic-position" );
294 var_Destroy( p_libvlc, "mosaic-rows" );
295 var_Destroy( p_libvlc, "mosaic-cols" );
296 var_Destroy( p_libvlc, "mosaic-keep-aspect-ratio" );
298 if( p_sys->p_pic ) p_sys->p_pic->pf_release( p_sys->p_pic );
299 vlc_mutex_unlock( &p_sys->lock );
300 vlc_mutex_destroy( &p_sys->lock );
304 /*****************************************************************************
305 * MosaicReleasePicture : Hack to avoid picture duplication
306 *****************************************************************************/
307 static void MosaicReleasePicture( picture_t *p_picture )
309 picture_t *p_original_pic = (picture_t *)p_picture->p_sys;
311 p_original_pic->pf_release( p_original_pic );
314 /*****************************************************************************
316 *****************************************************************************/
317 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
319 filter_sys_t *p_sys = p_filter->p_sys;
324 int i_index, i_real_index, i_row, i_col;
325 int i_greatest_real_index_used = p_sys->i_order_length - 1;
327 subpicture_region_t *p_region;
328 subpicture_region_t *p_region_prev = NULL;
330 /* Allocate the subpicture internal data. */
331 p_spu = p_filter->pf_sub_buffer_new( p_filter );
337 /* Initialize subpicture */
338 p_spu->i_channel = 0;
339 p_spu->i_start = date;
341 p_spu->b_ephemer = VLC_TRUE;
342 p_spu->i_alpha = p_sys->i_alpha;
343 p_spu->i_flags = p_sys->i_align;
344 p_spu->b_absolute = VLC_FALSE;
346 vlc_mutex_lock( &p_sys->lock );
347 vlc_mutex_lock( p_sys->p_lock );
349 p_bridge = GetBridge( p_filter );
350 if ( p_bridge == NULL )
352 vlc_mutex_unlock( p_sys->p_lock );
353 vlc_mutex_unlock( &p_sys->lock );
357 if ( p_sys->i_position == 0 ) /* use automatic positioning */
359 int i_numpics = p_sys->i_order_length; /* keep slots and all */
360 for ( i_index = 0; i_index < p_bridge->i_es_num; i_index++ )
362 bridged_es_t *p_es = p_bridge->pp_es[i_index];
363 if ( !p_es->b_empty )
366 if( p_sys->i_order_length && p_es->psz_id != 0 )
368 /* We also want to leave slots for images given in
369 * mosaic-order that are not available in p_vout_picture */
371 for( i = 0; i < p_sys->i_order_length ; i++ )
373 if( !strcmp( p_sys->ppsz_order[i], p_es->psz_id ) )
383 p_sys->i_rows = ((int)ceil(sqrt( (float)i_numpics )));
384 p_sys->i_cols = ( i_numpics % p_sys->i_rows == 0 ?
385 i_numpics / p_sys->i_rows :
386 i_numpics / p_sys->i_rows + 1 );
391 for ( i_index = 0; i_index < p_bridge->i_es_num; i_index++ )
393 bridged_es_t *p_es = p_bridge->pp_es[i_index];
394 video_format_t fmt_in = {0}, fmt_out = {0};
395 picture_t *p_converted;
397 if ( p_es->b_empty || p_es->p_picture == NULL )
400 if ( p_es->p_picture->date + p_sys->i_delay < date )
402 if ( p_es->p_picture->p_next != NULL )
404 picture_t *p_next = p_es->p_picture->p_next;
405 p_es->p_picture->pf_release( p_es->p_picture );
406 p_es->p_picture = p_next;
408 else if ( p_es->p_picture->date + p_sys->i_delay + BLANK_DELAY <
412 p_es->p_picture->pf_release( p_es->p_picture );
413 p_es->p_picture = NULL;
414 p_es->pp_last = &p_es->p_picture;
418 msg_Dbg( p_filter, "too late picture for %s (" I64Fd ")",
420 date - p_es->p_picture->date - p_sys->i_delay );
423 if ( p_sys->i_order_length == 0 )
430 for ( i = 0; i <= p_sys->i_order_length; i++ )
432 if ( i == p_sys->i_order_length ) break;
433 if ( strcmp( p_es->psz_id, p_sys->ppsz_order[i] ) == 0 )
439 if ( i == p_sys->i_order_length )
440 i_real_index = ++i_greatest_real_index_used;
442 i_row = ( i_real_index / p_sys->i_cols ) % p_sys->i_rows;
443 i_col = i_real_index % p_sys->i_cols ;
445 if ( !p_sys->b_keep )
447 /* Convert the images */
448 fmt_in.i_chroma = p_es->p_picture->format.i_chroma;
449 fmt_in.i_height = p_es->p_picture->format.i_height;
450 fmt_in.i_width = p_es->p_picture->format.i_width;
452 fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
453 fmt_out.i_width = fmt_in.i_width *
454 ( ( p_sys->i_width - ( p_sys->i_cols - 1 ) * p_sys->i_vborder )
455 / p_sys->i_cols ) / fmt_in.i_width;
456 fmt_out.i_height = fmt_in.i_height *
457 ( ( p_sys->i_height - ( p_sys->i_rows - 1 ) * p_sys->i_hborder )
458 / p_sys->i_rows ) / fmt_in.i_height;
459 if( p_sys->b_ar ) /* keep aspect ratio */
461 if( (float)fmt_out.i_width / (float)fmt_out.i_height
462 > (float)fmt_in.i_width / (float)fmt_in.i_height )
464 fmt_out.i_width = ( fmt_out.i_height * fmt_in.i_width )
469 fmt_out.i_height = ( fmt_out.i_width * fmt_in.i_height )
474 fmt_out.i_visible_width = fmt_out.i_width;
475 fmt_out.i_visible_height = fmt_out.i_height;
477 p_converted = image_Convert( p_sys->p_image, p_es->p_picture,
482 "image resizing and chroma conversion failed" );
488 p_converted = p_es->p_picture;
489 p_converted->i_refcount++;
490 fmt_in.i_width = fmt_out.i_width = p_converted->format.i_width;
491 fmt_in.i_height = fmt_out.i_height = p_converted->format.i_height;
492 fmt_in.i_chroma = fmt_out.i_chroma = p_converted->format.i_chroma;
493 fmt_out.i_visible_width = fmt_out.i_width;
494 fmt_out.i_visible_height = fmt_out.i_height;
497 p_region = p_spu->pf_make_region( VLC_OBJECT(p_filter), &fmt_out,
501 msg_Err( p_filter, "cannot allocate SPU region" );
502 p_filter->pf_sub_buffer_del( p_filter, p_spu );
503 vlc_mutex_unlock( &p_sys->lock );
504 vlc_mutex_unlock( p_sys->p_lock );
508 /* HACK ALERT : let's fix the pointers to avoid picture duplication.
509 * This is necessary because p_region->picture is not a pointer
510 * as it ought to be. */
517 /* Keep a pointer to the original picture (and its refcount...). */
518 p_region->picture.p_sys = (picture_sys_t *)p_converted;
519 p_region->picture.pf_release = MosaicReleasePicture;
522 if( p_sys->b_ar || p_sys->b_keep ) /* keep aspect ratio */
524 /* center the video in the dedicated rectangle */
525 p_region->i_x = p_sys->i_xoffset
526 + i_col * ( p_sys->i_width / p_sys->i_cols )
527 + ( i_col * p_sys->i_vborder ) / p_sys->i_cols
528 + ( ( ( p_sys->i_width
529 - ( p_sys->i_cols - 1 ) * p_sys->i_vborder )
530 / p_sys->i_cols ) - fmt_out.i_width ) / 2;
531 p_region->i_y = p_sys->i_yoffset
532 + i_row * ( p_sys->i_height / p_sys->i_rows )
533 + ( i_row * p_sys->i_hborder ) / p_sys->i_rows
534 + ( ( ( p_sys->i_height
535 - ( p_sys->i_rows - 1 ) * p_sys->i_hborder )
536 / p_sys->i_rows ) - fmt_out.i_height ) / 2;
540 /* we don't have to center the video since it takes the
541 whole rectangle area */
542 p_region->i_x = p_sys->i_xoffset
543 + i_col * ( p_sys->i_width / p_sys->i_cols )
544 + ( i_col * p_sys->i_vborder ) / p_sys->i_cols;
545 p_region->i_y = p_sys->i_yoffset
546 + i_row * ( p_sys->i_height / p_sys->i_rows )
547 + ( i_row * p_sys->i_hborder ) / p_sys->i_rows;
550 if( p_region_prev == NULL )
552 p_spu->p_region = p_region;
556 p_region_prev->p_next = p_region;
559 p_region_prev = p_region;
562 vlc_mutex_unlock( p_sys->p_lock );
563 vlc_mutex_unlock( &p_sys->lock );
568 /*****************************************************************************
569 * Callback to update params on the fly
570 *****************************************************************************/
571 static int MosaicCallback( vlc_object_t *p_this, char const *psz_var,
572 vlc_value_t oldval, vlc_value_t newval,
575 filter_sys_t *p_sys = (filter_sys_t *) p_data;
576 if( !strcmp( psz_var, "mosaic-alpha" ) )
578 vlc_mutex_lock( &p_sys->lock );
579 msg_Dbg( p_this, "Changing alpha from %d/255 to %d/255",
580 p_sys->i_alpha, newval.i_int);
581 p_sys->i_alpha = __MIN( __MAX( newval.i_int, 0 ), 255 );
582 vlc_mutex_unlock( &p_sys->lock );
584 else if( !strcmp( psz_var, "mosaic-height" ) )
586 vlc_mutex_lock( &p_sys->lock );
587 msg_Dbg( p_this, "Changing height from %dpx to %dpx",
588 p_sys->i_height, newval.i_int );
589 p_sys->i_height = __MAX( newval.i_int, 0 );
590 vlc_mutex_unlock( &p_sys->lock );
592 else if( !strcmp( psz_var, "mosaic-width" ) )
594 vlc_mutex_lock( &p_sys->lock );
595 msg_Dbg( p_this, "Changing width from %dpx to %dpx",
596 p_sys->i_width, newval.i_int );
597 p_sys->i_width = __MAX( newval.i_int, 0 );
598 vlc_mutex_unlock( &p_sys->lock );
600 else if( !strcmp( psz_var, "mosaic-xoffset" ) )
602 vlc_mutex_lock( &p_sys->lock );
603 msg_Dbg( p_this, "Changing x offset from %dpx to %dpx",
604 p_sys->i_xoffset, newval.i_int );
605 p_sys->i_xoffset = __MAX( newval.i_int, 0 );
606 vlc_mutex_unlock( &p_sys->lock );
608 else if( !strcmp( psz_var, "mosaic-yoffset" ) )
610 vlc_mutex_lock( &p_sys->lock );
611 msg_Dbg( p_this, "Changing y offset from %dpx to %dpx",
612 p_sys->i_yoffset, newval.i_int );
613 p_sys->i_yoffset = __MAX( newval.i_int, 0 );
614 vlc_mutex_unlock( &p_sys->lock );
616 else if( !strcmp( psz_var, "mosaic-align" ) )
618 int i_old = 0, i_new = 0;
619 vlc_mutex_lock( &p_sys->lock );
620 newval.i_int = __MIN( __MAX( newval.i_int, 0 ), 10 );
621 if( newval.i_int == 3 || newval.i_int == 7 )
623 while( pi_align_values[i_old] != p_sys->i_align ) i_old++;
624 while( pi_align_values[i_new] != newval.i_int ) i_new++;
625 msg_Dbg( p_this, "Changing alignment from %d (%s) to %d (%s)",
626 p_sys->i_align, ppsz_align_descriptions[i_old],
627 newval.i_int, ppsz_align_descriptions[i_new] );
628 p_sys->i_align = newval.i_int;
629 vlc_mutex_unlock( &p_sys->lock );
631 else if( !strcmp( psz_var, "mosaic-vborder" ) )
633 vlc_mutex_lock( &p_sys->lock );
634 msg_Dbg( p_this, "Changing vertical border from %dpx to %dpx",
635 p_sys->i_vborder, newval.i_int );
636 p_sys->i_vborder = __MAX( newval.i_int, 0 );
637 vlc_mutex_unlock( &p_sys->lock );
639 else if( !strcmp( psz_var, "mosaic-hborder" ) )
641 vlc_mutex_lock( &p_sys->lock );
642 msg_Dbg( p_this, "Changing horizontal border from %dpx to %dpx",
643 p_sys->i_vborder, newval.i_int );
644 p_sys->i_hborder = __MAX( newval.i_int, 0 );
645 vlc_mutex_unlock( &p_sys->lock );
647 else if( !strcmp( psz_var, "mosaic-position" ) )
649 if( newval.i_int > 1 || newval.i_int < 0 )
651 msg_Err( p_this, "Position is either 0 (auto) or 1 (fixed)" );
655 vlc_mutex_lock( &p_sys->lock );
656 msg_Dbg( p_this, "Changing position method from %d (%s) to %d (%s)",
657 p_sys->i_position, ppsz_pos_descriptions[p_sys->i_position],
658 newval.i_int, ppsz_pos_descriptions[newval.i_int]);
659 p_sys->i_position = newval.i_int;
660 vlc_mutex_unlock( &p_sys->lock );
663 else if( !strcmp( psz_var, "mosaic-rows" ) )
665 vlc_mutex_lock( &p_sys->lock );
666 msg_Dbg( p_this, "Changing number of rows from %d to %d",
667 p_sys->i_rows, newval.i_int );
668 p_sys->i_rows = __MAX( newval.i_int, 1 );
669 vlc_mutex_unlock( &p_sys->lock );
671 else if( !strcmp( psz_var, "mosaic-cols" ) )
673 vlc_mutex_lock( &p_sys->lock );
674 msg_Dbg( p_this, "Changing number of columns from %d to %d",
675 p_sys->i_cols, newval.i_int );
676 p_sys->i_cols = __MAX( newval.i_int, 1 );
677 vlc_mutex_unlock( &p_sys->lock );
679 else if( !strcmp( psz_var, "mosaic-keep-aspect-ratio" ) )
681 vlc_mutex_lock( &p_sys->lock );
684 msg_Dbg( p_this, "Keep aspect ratio" );
689 msg_Dbg( p_this, "Don't keep aspect ratio" );
692 vlc_mutex_unlock( &p_sys->lock );