1 /*****************************************************************************
2 * mosaic.c : Mosaic video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2004-2007 the VideoLAN team
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
29 #include <stdlib.h> /* malloc(), free() */
37 # include <limits.h> /* INT_MAX */
40 #include "vlc_filter.h"
41 #include "vlc_image.h"
45 #define BLANK_DELAY I64C(1000000)
47 /*****************************************************************************
49 *****************************************************************************/
50 static int CreateFilter ( vlc_object_t * );
51 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 *****************************************************************************/
62 vlc_mutex_t lock; /* Internal filter lock */
63 vlc_mutex_t *p_lock; /* Pointer to mosaic bridge lock */
65 image_handler_t *p_image;
67 int i_position; /* Mosaic positioning method */
68 vlc_bool_t b_ar; /* Do we keep the aspect ratio ? */
69 vlc_bool_t b_keep; /* Do we keep the original picture format ? */
70 int i_width, i_height; /* Mosaic height and width */
71 int i_cols, i_rows; /* Mosaic rows and cols */
72 int i_align; /* Mosaic alignment in background video */
73 int i_xoffset, i_yoffset; /* Top left corner offset */
74 int i_borderw, i_borderh; /* Border width/height between miniatures */
75 int i_alpha; /* Subfilter alpha blending */
77 char **ppsz_order; /* List of picture-ids */
80 int *pi_x_offsets; /* List of substreams x offsets */
81 int *pi_y_offsets; /* List of substreams y offsets */
87 /*****************************************************************************
89 *****************************************************************************/
90 #define ALPHA_TEXT N_("Transparency")
91 #define ALPHA_LONGTEXT N_( \
92 "Transparency of the mosaic foreground pictures. " \
93 "0 means transparent, 255 opaque (default)." )
95 #define HEIGHT_TEXT N_("Height")
96 #define HEIGHT_LONGTEXT N_( "Total height of the mosaic, in pixels." )
97 #define WIDTH_TEXT N_("Width")
98 #define WIDTH_LONGTEXT N_( "Total width of the mosaic, in pixels." )
100 #define XOFFSET_TEXT N_("Top left corner X coordinate")
101 #define XOFFSET_LONGTEXT N_( \
102 "X Coordinate of the top-left corner of the mosaic.")
103 #define YOFFSET_TEXT N_("Top left corner Y coordinate")
104 #define YOFFSET_LONGTEXT N_( \
105 "Y Coordinate of the top-left corner of the mosaic.")
107 #define BORDERW_TEXT N_("Border width")
108 #define BORDERW_LONGTEXT N_( \
109 "Width in pixels of the border between miniatures." )
110 #define BORDERH_TEXT N_("Border height")
111 #define BORDERH_LONGTEXT N_( \
112 "Height in pixels of the border between miniatures." )
114 #define ALIGN_TEXT N_("Mosaic alignment" )
115 #define ALIGN_LONGTEXT N_( \
116 "You can enforce the mosaic alignment on the video " \
117 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
118 "also use combinations of these values, eg 6 = top-right).")
120 #define POS_TEXT N_("Positioning method")
121 #define POS_LONGTEXT N_( \
122 "Positioning method for the mosaic. auto: " \
123 "automatically choose the best number of rows and columns. " \
124 "fixed: use the user-defined number of rows and columns. " \
125 "offsets: use the user-defined offsets for each image." )
127 #define ROWS_TEXT N_("Number of rows")
128 #define ROWS_LONGTEXT N_( \
129 "Number of image rows in the mosaic (only used if " \
130 "positionning method is set to \"fixed\")." )
132 #define COLS_TEXT N_("Number of columns")
133 #define COLS_LONGTEXT N_( \
134 "Number of image columns in the mosaic (only used if " \
135 "positionning method is set to \"fixed\"." )
137 #define AR_TEXT N_("Keep aspect ratio")
138 #define AR_LONGTEXT N_( \
139 "Keep the original aspect ratio when resizing " \
141 #define KEEP_TEXT N_("Keep original size")
142 #define KEEP_LONGTEXT N_( \
143 "Keep the original size of mosaic elements." )
145 #define ORDER_TEXT N_("Elements order" )
146 #define ORDER_LONGTEXT N_( \
147 "You can enforce the order of the elements on " \
148 "the mosaic. You must give a comma-separated list of picture ID(s)." \
149 "These IDs are assigned in the \"mosaic-bridge\" module." )
151 #define OFFSETS_TEXT N_("Offsets in order" )
152 #define OFFSETS_LONGTEXT N_( \
153 "You can enforce the (x,y) offsets of the elements on the mosaic " \
154 "(only used if positioning method is set to \"offsets\"). You " \
155 "must give a comma-separated list of coordinates (eg: 10,10,150,10)." )
157 #define DELAY_TEXT N_("Delay")
158 #define DELAY_LONGTEXT N_( \
159 "Pictures coming from the mosaic elements will be delayed " \
160 "according to this value (in milliseconds). For high " \
161 "values you will need to raise caching at input.")
165 position_auto = 0, position_fixed = 1, position_offsets = 2
167 static int pi_pos_values[] = { 0, 1, 2 };
168 static const char *ppsz_pos_descriptions[] =
169 { N_("auto"), N_("fixed"), N_("offsets") };
171 static int pi_align_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
172 static const char *ppsz_align_descriptions[] =
173 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
174 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
176 #define CFG_PREFIX "mosaic-"
179 set_description( _("Mosaic video sub filter") );
180 set_shortname( _("Mosaic") );
181 set_category( CAT_VIDEO );
182 set_subcategory( SUBCAT_VIDEO_SUBPIC);
183 set_capability( "sub filter", 0 );
184 set_callbacks( CreateFilter, DestroyFilter );
186 add_integer( CFG_PREFIX "alpha", 255, NULL,
187 ALPHA_TEXT, ALPHA_LONGTEXT, VLC_FALSE );
189 add_integer( CFG_PREFIX "height", 100, NULL,
190 HEIGHT_TEXT, HEIGHT_LONGTEXT, VLC_FALSE );
191 add_integer( CFG_PREFIX "width", 100, NULL,
192 WIDTH_TEXT, WIDTH_LONGTEXT, VLC_FALSE );
194 add_integer( CFG_PREFIX "align", 5, NULL,
195 ALIGN_TEXT, ALIGN_LONGTEXT, VLC_TRUE);
196 change_integer_list( pi_align_values, ppsz_align_descriptions, 0 );
198 add_integer( CFG_PREFIX "xoffset", 0, NULL,
199 XOFFSET_TEXT, XOFFSET_LONGTEXT, VLC_TRUE );
200 add_integer( CFG_PREFIX "yoffset", 0, NULL,
201 YOFFSET_TEXT, YOFFSET_LONGTEXT, VLC_TRUE );
203 add_integer( CFG_PREFIX "borderw", 0, NULL,
204 BORDERW_TEXT, BORDERW_LONGTEXT, VLC_TRUE );
205 add_deprecated( CFG_PREFIX "vborder", VLC_FALSE );
206 add_integer( CFG_PREFIX "borderh", 0, NULL,
207 BORDERH_TEXT, BORDERH_LONGTEXT, VLC_TRUE );
208 add_deprecated( CFG_PREFIX "hborder", VLC_FALSE );
210 add_integer( CFG_PREFIX "position", 0, NULL,
211 POS_TEXT, POS_LONGTEXT, VLC_FALSE );
212 change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
213 add_integer( CFG_PREFIX "rows", 2, NULL,
214 ROWS_TEXT, ROWS_LONGTEXT, VLC_FALSE );
215 add_integer( CFG_PREFIX "cols", 2, NULL,
216 COLS_TEXT, COLS_LONGTEXT, VLC_FALSE );
218 add_bool( CFG_PREFIX "keep-aspect-ratio", 0, NULL,
219 AR_TEXT, AR_LONGTEXT, VLC_FALSE );
220 add_bool( CFG_PREFIX "keep-picture", 0, NULL,
221 KEEP_TEXT, KEEP_LONGTEXT, VLC_FALSE );
223 add_string( CFG_PREFIX "order", "", NULL,
224 ORDER_TEXT, ORDER_LONGTEXT, VLC_FALSE );
226 add_string( CFG_PREFIX "offsets", "", NULL,
227 OFFSETS_TEXT, OFFSETS_LONGTEXT, VLC_FALSE );
229 add_integer( CFG_PREFIX "delay", 0, NULL, DELAY_TEXT, DELAY_LONGTEXT,
232 var_Create( p_module->p_libvlc_global, "mosaic-lock", VLC_VAR_MUTEX );
235 static const char *ppsz_filter_options[] = {
236 "alpha", "height", "width", "align", "xoffset", "yoffset",
237 "borderw", "borderh", "position", "rows", "cols",
238 "keep-aspect-ratio", "keep-picture", "order", "offsets",
242 /*****************************************************************************
243 * mosaic_ParseSetOffsets:
244 * parse the "--mosaic-offsets x1,y1,x2,y2,x3,y3" parameter
245 * and set the corresponding struct filter_sys_t entries.
246 *****************************************************************************/
247 #define mosaic_ParseSetOffsets( a, b, c ) \
248 __mosaic_ParseSetOffsets( VLC_OBJECT( a ), b, c )
249 static void __mosaic_ParseSetOffsets( vlc_object_t *p_this,
255 char *psz_end = NULL;
261 p_sys->pi_x_offsets =
262 realloc( p_sys->pi_x_offsets, i_index * sizeof(int) );
263 p_sys->pi_x_offsets[i_index - 1] = atoi( psz_offsets );
264 psz_end = strchr( psz_offsets, ',' );
265 psz_offsets = psz_end + 1;
267 p_sys->pi_y_offsets =
268 realloc( p_sys->pi_y_offsets, i_index * sizeof(int) );
269 p_sys->pi_y_offsets[i_index - 1] = atoi( psz_offsets );
270 psz_end = strchr( psz_offsets, ',' );
271 psz_offsets = psz_end + 1;
273 msg_Dbg( p_this, CFG_PREFIX "offset: id %d, x=%d, y=%d",
274 i_index, p_sys->pi_x_offsets[i_index - 1],
275 p_sys->pi_y_offsets[i_index - 1] );
278 p_sys->i_offsets_length = i_index;
282 /*****************************************************************************
283 * CreateFiler: allocate mosaic video filter
284 *****************************************************************************/
285 static int CreateFilter( vlc_object_t *p_this )
287 filter_t *p_filter = (filter_t *)p_this;
289 libvlc_global_data_t *p_libvlc_global = p_filter->p_libvlc_global;
295 /* The mosaic thread is more important than the decoder threads */
296 vlc_thread_set_priority( p_this, VLC_THREAD_PRIORITY_OUTPUT );
298 /* Allocate structure */
299 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
302 msg_Err( p_filter, "out of memory" );
306 p_filter->pf_sub_filter = Filter;
308 vlc_mutex_init( p_filter, &p_sys->lock );
309 vlc_mutex_lock( &p_sys->lock );
311 var_Get( p_libvlc_global, "mosaic-lock", &val );
312 p_sys->p_lock = val.p_address;
314 config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
317 #define GET_VAR( name, min, max ) \
318 p_sys->i_##name = __MIN( max, __MAX( min, \
319 var_CreateGetIntegerCommand( p_filter, CFG_PREFIX #name ) ) ); \
320 var_AddCallback( p_filter, CFG_PREFIX #name, MosaicCallback, p_sys );
322 GET_VAR( width, 0, INT_MAX );
323 GET_VAR( height, 0, INT_MAX );
324 GET_VAR( xoffset, 0, INT_MAX );
325 GET_VAR( yoffset, 0, INT_MAX );
327 GET_VAR( align, 0, 10 );
328 if( p_sys->i_align == 3 || p_sys->i_align == 7 )
331 GET_VAR( borderw, 0, INT_MAX );
332 GET_VAR( borderh, 0, INT_MAX );
333 GET_VAR( rows, 1, INT_MAX );
334 GET_VAR( cols, 1, INT_MAX );
335 GET_VAR( alpha, 0, 255 );
336 GET_VAR( position, 0, 2 );
337 GET_VAR( delay, 100, INT_MAX );
338 p_sys->i_delay *= 1000;
340 p_sys->b_ar = var_CreateGetBoolCommand( p_filter,
341 CFG_PREFIX "keep-aspect-ratio" );
342 var_AddCallback( p_filter, CFG_PREFIX "keep-aspect-ratio", MosaicCallback,
345 p_sys->b_keep = var_CreateGetBoolCommand( p_filter,
346 CFG_PREFIX "keep-picture" );
347 if ( !p_sys->b_keep )
349 p_sys->p_image = image_HandlerCreate( p_filter );
352 p_sys->i_order_length = 0;
353 p_sys->ppsz_order = NULL;
354 psz_order = var_CreateGetStringCommand( p_filter, CFG_PREFIX "order" );
355 var_AddCallback( p_filter, CFG_PREFIX "order", MosaicCallback, p_sys );
359 char *psz_end = NULL;
363 psz_end = strchr( psz_order, ',' );
365 p_sys->ppsz_order = realloc( p_sys->ppsz_order,
366 i_index * sizeof(char *) );
367 p_sys->ppsz_order[i_index - 1] = strndup( psz_order,
368 psz_end - psz_order );
369 psz_order = psz_end+1;
371 p_sys->i_order_length = i_index;
374 /* Manage specific offsets for substreams */
375 psz_offsets = var_CreateGetStringCommand( p_filter, CFG_PREFIX "offsets" );
376 p_sys->i_offsets_length = 0;
377 p_sys->pi_x_offsets = NULL;
378 p_sys->pi_y_offsets = NULL;
379 mosaic_ParseSetOffsets( p_filter, p_sys, psz_offsets );
380 var_AddCallback( p_filter, CFG_PREFIX "offsets", MosaicCallback, p_sys );
382 vlc_mutex_unlock( &p_sys->lock );
387 /*****************************************************************************
388 * DestroyFilter: destroy mosaic video filter
389 *****************************************************************************/
390 static void DestroyFilter( vlc_object_t *p_this )
392 filter_t *p_filter = (filter_t*)p_this;
393 filter_sys_t *p_sys = p_filter->p_sys;
396 vlc_mutex_lock( &p_sys->lock );
400 image_HandlerDelete( p_sys->p_image );
403 if( p_sys->i_order_length )
405 for( i_index = 0; i_index < p_sys->i_order_length; i_index++ )
407 free( p_sys->ppsz_order[i_index] );
409 free( p_sys->ppsz_order );
411 if( p_sys->i_offsets_length )
413 free( p_sys->pi_x_offsets );
414 free( p_sys->pi_y_offsets );
415 p_sys->i_offsets_length = 0;
418 vlc_mutex_unlock( &p_sys->lock );
419 vlc_mutex_destroy( &p_sys->lock );
423 /*****************************************************************************
424 * MosaicReleasePicture : Hack to avoid picture duplication
425 *****************************************************************************/
426 static void MosaicReleasePicture( picture_t *p_picture )
428 picture_t *p_original_pic = (picture_t *)p_picture->p_sys;
430 p_original_pic->pf_release( p_original_pic );
433 /*****************************************************************************
435 *****************************************************************************/
436 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
438 filter_sys_t *p_sys = p_filter->p_sys;
443 int i_index, i_real_index, i_row, i_col;
444 int i_greatest_real_index_used = p_sys->i_order_length - 1;
446 unsigned int col_inner_width, row_inner_height;
448 subpicture_region_t *p_region;
449 subpicture_region_t *p_region_prev = NULL;
451 /* Allocate the subpicture internal data. */
452 p_spu = p_filter->pf_sub_buffer_new( p_filter );
458 /* Initialize subpicture */
459 p_spu->i_channel = 0;
460 p_spu->i_start = date;
462 p_spu->b_ephemer = VLC_TRUE;
463 p_spu->i_alpha = p_sys->i_alpha;
464 p_spu->i_flags = p_sys->i_align;
465 p_spu->b_absolute = VLC_FALSE;
467 vlc_mutex_lock( &p_sys->lock );
468 vlc_mutex_lock( p_sys->p_lock );
470 p_bridge = GetBridge( p_filter );
471 if ( p_bridge == NULL )
473 vlc_mutex_unlock( p_sys->p_lock );
474 vlc_mutex_unlock( &p_sys->lock );
478 if ( p_sys->i_position == position_offsets )
480 /* If we have either too much or not enough offsets, fall-back
481 * to automatic positioning. */
482 if ( p_sys->i_offsets_length != p_sys->i_order_length )
485 "Number of specified offsets (%d) does not match number "
486 "of input substreams in mosaic-order (%d), falling back "
487 "to mosaic-position=0",
488 p_sys->i_offsets_length, p_sys->i_order_length );
489 p_sys->i_position = position_auto;
493 if ( p_sys->i_position == position_auto )
495 int i_numpics = p_sys->i_order_length; /* keep slots and all */
496 for ( i_index = 0; i_index < p_bridge->i_es_num; i_index++ )
498 bridged_es_t *p_es = p_bridge->pp_es[i_index];
499 if ( !p_es->b_empty )
502 if( p_sys->i_order_length && p_es->psz_id != 0 )
504 /* We also want to leave slots for images given in
505 * mosaic-order that are not available in p_vout_picture */
507 for( i = 0; i < p_sys->i_order_length ; i++ )
509 if( !strcmp( p_sys->ppsz_order[i], p_es->psz_id ) )
519 p_sys->i_rows = ceil(sqrt( (double)i_numpics ));
520 p_sys->i_cols = ( i_numpics % p_sys->i_rows == 0 ?
521 i_numpics / p_sys->i_rows :
522 i_numpics / p_sys->i_rows + 1 );
525 col_inner_width = ( ( p_sys->i_width - ( p_sys->i_cols - 1 )
526 * p_sys->i_borderw ) / p_sys->i_cols );
527 row_inner_height = ( ( p_sys->i_height - ( p_sys->i_rows - 1 )
528 * p_sys->i_borderh ) / p_sys->i_rows );
532 for ( i_index = 0; i_index < p_bridge->i_es_num; i_index++ )
534 bridged_es_t *p_es = p_bridge->pp_es[i_index];
535 video_format_t fmt_in, fmt_out;
536 picture_t *p_converted;
538 memset( &fmt_in, 0, sizeof( video_format_t ) );
539 memset( &fmt_out, 0, sizeof( video_format_t ) );
544 while ( p_es->p_picture != NULL
545 && p_es->p_picture->date + p_sys->i_delay < date )
547 if ( p_es->p_picture->p_next != NULL )
549 picture_t *p_next = p_es->p_picture->p_next;
550 p_es->p_picture->pf_release( p_es->p_picture );
551 p_es->p_picture = p_next;
553 else if ( p_es->p_picture->date + p_sys->i_delay + BLANK_DELAY <
557 p_es->p_picture->pf_release( p_es->p_picture );
558 p_es->p_picture = NULL;
559 p_es->pp_last = &p_es->p_picture;
564 msg_Dbg( p_filter, "too late picture for %s (" I64Fd ")",
566 date - p_es->p_picture->date - p_sys->i_delay );
571 if ( p_es->p_picture == NULL )
574 if ( p_sys->i_order_length == 0 )
581 for ( i = 0; i <= p_sys->i_order_length; i++ )
583 if ( i == p_sys->i_order_length ) break;
584 if ( strcmp( p_es->psz_id, p_sys->ppsz_order[i] ) == 0 )
590 if ( i == p_sys->i_order_length )
591 i_real_index = ++i_greatest_real_index_used;
593 i_row = ( i_real_index / p_sys->i_cols ) % p_sys->i_rows;
594 i_col = i_real_index % p_sys->i_cols ;
596 if ( !p_sys->b_keep )
598 /* Convert the images */
599 fmt_in.i_chroma = p_es->p_picture->format.i_chroma;
600 fmt_in.i_height = p_es->p_picture->format.i_height;
601 fmt_in.i_width = p_es->p_picture->format.i_width;
603 fmt_out.i_chroma = VLC_FOURCC('I','4','2','0');
604 fmt_out.i_width = col_inner_width;
605 fmt_out.i_height = row_inner_height;
607 if( p_sys->b_ar ) /* keep aspect ratio */
609 if( (float)fmt_out.i_width / (float)fmt_out.i_height
610 > (float)fmt_in.i_width / (float)fmt_in.i_height )
612 fmt_out.i_width = ( fmt_out.i_height * fmt_in.i_width )
617 fmt_out.i_height = ( fmt_out.i_width * fmt_in.i_height )
622 fmt_out.i_visible_width = fmt_out.i_width;
623 fmt_out.i_visible_height = fmt_out.i_height;
625 p_converted = image_Convert( p_sys->p_image, p_es->p_picture,
630 "image resizing and chroma conversion failed" );
636 p_converted = p_es->p_picture;
637 p_converted->i_refcount++;
638 fmt_in.i_width = fmt_out.i_width = p_converted->format.i_width;
639 fmt_in.i_height = fmt_out.i_height = p_converted->format.i_height;
640 fmt_in.i_chroma = fmt_out.i_chroma = p_converted->format.i_chroma;
641 fmt_out.i_visible_width = fmt_out.i_width;
642 fmt_out.i_visible_height = fmt_out.i_height;
645 p_region = p_spu->pf_make_region( VLC_OBJECT(p_filter), &fmt_out,
649 msg_Err( p_filter, "cannot allocate SPU region" );
650 p_filter->pf_sub_buffer_del( p_filter, p_spu );
651 vlc_mutex_unlock( &p_sys->lock );
652 vlc_mutex_unlock( p_sys->p_lock );
656 /* HACK ALERT: let's fix the pointers to avoid picture duplication.
657 * This is necessary because p_region->picture is not a pointer
658 * as it ought to be. */
665 /* Keep a pointer to the original picture (and its refcount...). */
666 p_region->picture.p_sys = (picture_sys_t *)p_converted;
667 p_region->picture.pf_release = MosaicReleasePicture;
670 if( p_sys->i_position == position_offsets )
672 p_region->i_x = p_sys->pi_x_offsets[i_real_index];
674 else if( fmt_out.i_width > col_inner_width ||
675 p_sys->b_ar || p_sys->b_keep )
677 /* we don't have to center the video since it takes the
678 whole rectangle area or it's larger than the rectangle */
679 p_region->i_x = p_sys->i_xoffset
680 + i_col * ( p_sys->i_width / p_sys->i_cols )
681 + ( i_col * p_sys->i_borderw ) / p_sys->i_cols;
685 /* center the video in the dedicated rectangle */
686 p_region->i_x = p_sys->i_xoffset
687 + i_col * ( p_sys->i_width / p_sys->i_cols )
688 + ( i_col * p_sys->i_borderw ) / p_sys->i_cols
689 + ( col_inner_width - fmt_out.i_width ) / 2;
692 if( p_sys->i_position == position_offsets )
694 p_region->i_y = p_sys->pi_y_offsets[i_real_index];
696 else if( fmt_out.i_height < row_inner_height
697 || p_sys->b_ar || p_sys->b_keep )
699 /* we don't have to center the video since it takes the
700 whole rectangle area or it's taller than the rectangle */
701 p_region->i_y = p_sys->i_yoffset
702 + i_row * ( p_sys->i_height / p_sys->i_rows )
703 + ( i_row * p_sys->i_borderh ) / p_sys->i_rows;
707 /* center the video in the dedicated rectangle */
708 p_region->i_y = p_sys->i_yoffset
709 + i_row * ( p_sys->i_height / p_sys->i_rows )
710 + ( i_row * p_sys->i_borderh ) / p_sys->i_rows
711 + ( row_inner_height - fmt_out.i_height ) / 2;
714 if( p_region_prev == NULL )
716 p_spu->p_region = p_region;
720 p_region_prev->p_next = p_region;
723 p_region_prev = p_region;
726 vlc_mutex_unlock( p_sys->p_lock );
727 vlc_mutex_unlock( &p_sys->lock );
732 /*****************************************************************************
733 * Callback to update params on the fly
734 *****************************************************************************/
735 static int MosaicCallback( vlc_object_t *p_this, char const *psz_var,
736 vlc_value_t oldval, vlc_value_t newval,
739 filter_sys_t *p_sys = (filter_sys_t *) p_data;
741 #define VAR_IS( a ) !strcmp( psz_var, CFG_PREFIX a )
742 if( VAR_IS( "alpha" ) )
744 vlc_mutex_lock( &p_sys->lock );
745 msg_Dbg( p_this, "changing alpha from %d/255 to %d/255",
746 p_sys->i_alpha, newval.i_int);
747 p_sys->i_alpha = __MIN( __MAX( newval.i_int, 0 ), 255 );
748 vlc_mutex_unlock( &p_sys->lock );
750 else if( VAR_IS( "height" ) )
752 vlc_mutex_lock( &p_sys->lock );
753 msg_Dbg( p_this, "changing height from %dpx to %dpx",
754 p_sys->i_height, newval.i_int );
755 p_sys->i_height = __MAX( newval.i_int, 0 );
756 vlc_mutex_unlock( &p_sys->lock );
758 else if( VAR_IS( "width" ) )
760 vlc_mutex_lock( &p_sys->lock );
761 msg_Dbg( p_this, "changing width from %dpx to %dpx",
762 p_sys->i_width, newval.i_int );
763 p_sys->i_width = __MAX( newval.i_int, 0 );
764 vlc_mutex_unlock( &p_sys->lock );
766 else if( VAR_IS( "xoffset" ) )
768 vlc_mutex_lock( &p_sys->lock );
769 msg_Dbg( p_this, "changing x offset from %dpx to %dpx",
770 p_sys->i_xoffset, newval.i_int );
771 p_sys->i_xoffset = __MAX( newval.i_int, 0 );
772 vlc_mutex_unlock( &p_sys->lock );
774 else if( VAR_IS( "yoffset" ) )
776 vlc_mutex_lock( &p_sys->lock );
777 msg_Dbg( p_this, "changing y offset from %dpx to %dpx",
778 p_sys->i_yoffset, newval.i_int );
779 p_sys->i_yoffset = __MAX( newval.i_int, 0 );
780 vlc_mutex_unlock( &p_sys->lock );
782 else if( VAR_IS( "align" ) )
784 int i_old = 0, i_new = 0;
785 vlc_mutex_lock( &p_sys->lock );
786 newval.i_int = __MIN( __MAX( newval.i_int, 0 ), 10 );
787 if( newval.i_int == 3 || newval.i_int == 7 )
789 while( pi_align_values[i_old] != p_sys->i_align ) i_old++;
790 while( pi_align_values[i_new] != newval.i_int ) i_new++;
791 msg_Dbg( p_this, "changing alignment from %d (%s) to %d (%s)",
792 p_sys->i_align, ppsz_align_descriptions[i_old],
793 newval.i_int, ppsz_align_descriptions[i_new] );
794 p_sys->i_align = newval.i_int;
795 vlc_mutex_unlock( &p_sys->lock );
797 else if( VAR_IS( "borderw" ) )
799 vlc_mutex_lock( &p_sys->lock );
800 msg_Dbg( p_this, "changing border width from %dpx to %dpx",
801 p_sys->i_borderw, newval.i_int );
802 p_sys->i_borderw = __MAX( newval.i_int, 0 );
803 vlc_mutex_unlock( &p_sys->lock );
805 else if( VAR_IS( "borderh" ) )
807 vlc_mutex_lock( &p_sys->lock );
808 msg_Dbg( p_this, "changing border height from %dpx to %dpx",
809 p_sys->i_borderh, newval.i_int );
810 p_sys->i_borderh = __MAX( newval.i_int, 0 );
811 vlc_mutex_unlock( &p_sys->lock );
813 else if( VAR_IS( "position" ) )
815 if( newval.i_int > 2 || newval.i_int < 0 )
818 "Position is either 0 (%s), 1 (%s) or 2 (%s)",
819 ppsz_pos_descriptions[0],
820 ppsz_pos_descriptions[1],
821 ppsz_pos_descriptions[2] );
825 vlc_mutex_lock( &p_sys->lock );
826 msg_Dbg( p_this, "changing position method from %d (%s) to %d (%s)",
827 p_sys->i_position, ppsz_pos_descriptions[p_sys->i_position],
828 newval.i_int, ppsz_pos_descriptions[newval.i_int]);
829 p_sys->i_position = newval.i_int;
830 vlc_mutex_unlock( &p_sys->lock );
833 else if( VAR_IS( "rows" ) )
835 vlc_mutex_lock( &p_sys->lock );
836 msg_Dbg( p_this, "changing number of rows from %d to %d",
837 p_sys->i_rows, newval.i_int );
838 p_sys->i_rows = __MAX( newval.i_int, 1 );
839 vlc_mutex_unlock( &p_sys->lock );
841 else if( VAR_IS( "cols" ) )
843 vlc_mutex_lock( &p_sys->lock );
844 msg_Dbg( p_this, "changing number of columns from %d to %d",
845 p_sys->i_cols, newval.i_int );
846 p_sys->i_cols = __MAX( newval.i_int, 1 );
847 vlc_mutex_unlock( &p_sys->lock );
849 else if( VAR_IS( "order" ) )
853 vlc_mutex_lock( &p_sys->lock );
854 msg_Dbg( p_this, "Changing mosaic order to %s", newval.psz_string );
856 psz_order = newval.psz_string;
858 while( p_sys->i_order_length-- )
860 free( p_sys->ppsz_order[p_sys->i_order_length] );
862 free( p_sys->ppsz_order );
863 p_sys->ppsz_order = NULL;
867 char *psz_end = NULL;
871 psz_end = strchr( psz_order, ',' );
873 p_sys->ppsz_order = realloc( p_sys->ppsz_order,
874 i_index * sizeof(char *) );
875 p_sys->ppsz_order[i_index - 1] = strndup( psz_order,
876 psz_end - psz_order );
877 psz_order = psz_end+1;
879 p_sys->i_order_length = i_index;
882 vlc_mutex_unlock( &p_sys->lock );
884 else if( VAR_IS( "offsets" ) )
886 vlc_mutex_lock( &p_sys->lock );
887 msg_Info( p_this, "Changing mosaic-offsets to %s", newval.psz_string );
889 if( p_sys->i_offsets_length != 0 )
891 free( p_sys->pi_x_offsets );
892 free( p_sys->pi_y_offsets );
894 p_sys->i_offsets_length = 0;
896 mosaic_ParseSetOffsets( p_this, p_sys, newval.psz_string );
898 vlc_mutex_unlock( &p_sys->lock );
900 else if( VAR_IS( "keep-aspect-ratio" ) )
902 vlc_mutex_lock( &p_sys->lock );
905 msg_Dbg( p_this, "keeping aspect ratio" );
910 msg_Dbg( p_this, "won't keep aspect ratio" );
913 vlc_mutex_unlock( &p_sys->lock );
915 else if( VAR_IS( "keep-picture" ) )
917 vlc_mutex_lock( &p_sys->lock );
918 p_sys->b_keep = newval.b_bool;
919 if ( !p_sys->b_keep && !p_sys->p_image )
921 p_sys->p_image = image_HandlerCreate( p_this );
923 vlc_mutex_unlock( &p_sys->lock );