git.sesse.net Git - vlc/blob - modules/video_filter/mosaic.c

   1 /*****************************************************************************
   2  * mosaic.c : Mosaic video plugin for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2004-2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea@via.ecp.fr>
   8  *          Christophe Massiot <massiot@via.ecp.fr>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23 *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #include <stdlib.h>                                      /* malloc(), free() */
  29 #include <string.h>
  30 #include <math.h>
  31
  32 #include <vlc/vlc.h>
  33 #include <vlc/vout.h>
  34
  35 #ifdef HAVE_LIMITS_H
  36 #   include <limits.h> /* INT_MAX */
  37 #endif
  38
  39 #include "vlc_filter.h"
  40 #include "vlc_image.h"
  41
  42 #include "mosaic.h"
  43
  44 #define BLANK_DELAY I64C(1000000)
  45
  46 /*****************************************************************************
  47  * Local prototypes
  48  *****************************************************************************/
  49 static int  CreateFilter    ( vlc_object_t * );
  50 static void DestroyFilter   ( vlc_object_t * );
  51
  52 static subpicture_t *Filter( filter_t *, mtime_t );
  53
  54 static int MosaicCallback( vlc_object_t *, char const *, vlc_value_t,
  55                            vlc_value_t, void * );
  56
  57 /*****************************************************************************
  58  * filter_sys_t : filter descriptor
  59  *****************************************************************************/
  60 struct filter_sys_t
  61 {
  62     vlc_mutex_t lock;
  63     vlc_mutex_t *p_lock;
  64
  65     image_handler_t *p_image;
  66     picture_t *p_pic;
  67
  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 */
  77
  78     vlc_bool_t b_bs; /* Bluescreen vars */
  79     int i_bsu, i_bsv, i_bsut, i_bsvt;
  80
  81     char **ppsz_order; /* list of picture-id */
  82     int i_order_length;
  83
  84     mtime_t i_delay;
  85 };
  86
  87 /*****************************************************************************
  88  * Module descriptor
  89  *****************************************************************************/
  90 #define ALPHA_TEXT N_("Alpha blending")
  91 #define ALPHA_LONGTEXT N_("Alpha blending (0 -> 255). Default is 255")
  92
  93 #define HEIGHT_TEXT N_("Height in pixels")
  94 #define WIDTH_TEXT N_("Width in pixels")
  95 #define XOFFSET_TEXT N_("Top left corner x coordinate")
  96 #define YOFFSET_TEXT N_("Top left corner y coordinate")
  97 #define VBORDER_TEXT N_("Vertical border width in pixels")
  98 #define HBORDER_TEXT N_("Horizontal border width in pixels")
  99 #define ALIGN_TEXT N_("Mosaic alignment")
 100
 101 #define POS_TEXT N_("Positioning method")
 102 #define POS_LONGTEXT N_("Positioning method. auto: automatically choose " \
 103         "the best number of rows and columns. fixed: use the user-defined " \
 104         "number of rows and columns.")
 105 #define ROWS_TEXT N_("Number of rows")
 106 #define COLS_TEXT N_("Number of columns")
 107 #define AR_TEXT N_("Keep aspect ratio when resizing")
 108 #define KEEP_TEXT N_("Keep original size")
 109
 110 #define ORDER_TEXT N_("Order as a comma separated list of picture-id(s)")
 111
 112 #define DELAY_TEXT N_("Delay")
 113 #define DELAY_LONGTEXT N_("Pictures coming from the picture video outputs " \
 114         "will be delayed accordingly (in milliseconds). For high " \
 115         "values you will need to raise file-caching and others.")
 116
 117 #define BLUESCREEN_TEXT N_("Enable bluescreen (aka greenscreen or chroma key) video background replacing")
 118 #define BLUESCREENU_TEXT N_("Bluescreen chroma key U (0-255)")
 119 #define BLUESCREENV_TEXT N_("Bluescreen chroma key V (0-255)")
 120 #define BLUESCREENUTOL_TEXT N_("Bluescreen chroma key U tolerance")
 121 #define BLUESCREENVTOL_TEXT N_("Bluescreen chroma key V tolerance")
 122
 123 static int pi_pos_values[] = { 0, 1 };
 124 static char * ppsz_pos_descriptions[] =
 125 { N_("auto"), N_("fixed") };
 126
 127 static int pi_align_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
 128 static char *ppsz_align_descriptions[] =
 129      { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
 130      N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
 131
 132
 133 vlc_module_begin();
 134     set_description( N_("Mosaic video sub filter") );
 135     set_shortname( N_("Mosaic") );
 136     set_category( CAT_VIDEO );
 137     set_subcategory( SUBCAT_VIDEO_SUBPIC);
 138     set_capability( "sub filter", 0 );
 139     set_callbacks( CreateFilter, DestroyFilter );
 140
 141     add_integer( "mosaic-alpha", 255, NULL, ALPHA_TEXT, ALPHA_LONGTEXT, VLC_FALSE );
 142     add_integer( "mosaic-height", 100, NULL, HEIGHT_TEXT, HEIGHT_TEXT, VLC_FALSE );
 143     add_integer( "mosaic-width", 100, NULL, WIDTH_TEXT, WIDTH_TEXT, VLC_FALSE );
 144     add_integer( "mosaic-align", 5, NULL, ALIGN_TEXT, ALIGN_TEXT, VLC_TRUE);
 145         change_integer_list( pi_align_values, ppsz_align_descriptions, 0 );
 146     add_integer( "mosaic-xoffset", 0, NULL, XOFFSET_TEXT, XOFFSET_TEXT, VLC_TRUE );
 147     add_integer( "mosaic-yoffset", 0, NULL, YOFFSET_TEXT, YOFFSET_TEXT, VLC_TRUE );
 148     add_integer( "mosaic-vborder", 0, NULL, VBORDER_TEXT, VBORDER_TEXT, VLC_TRUE );
 149     add_integer( "mosaic-hborder", 0, NULL, HBORDER_TEXT, HBORDER_TEXT, VLC_TRUE );
 150
 151     add_integer( "mosaic-position", 0, NULL, POS_TEXT, POS_LONGTEXT, VLC_FALSE );
 152         change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
 153     add_integer( "mosaic-rows", 2, NULL, ROWS_TEXT, ROWS_TEXT, VLC_FALSE );
 154     add_integer( "mosaic-cols", 2, NULL, COLS_TEXT, COLS_TEXT, VLC_FALSE );
 155     add_bool( "mosaic-keep-aspect-ratio", 0, NULL, AR_TEXT, AR_TEXT, VLC_FALSE );
 156     add_bool( "mosaic-keep-picture", 0, NULL, KEEP_TEXT, KEEP_TEXT, VLC_FALSE );
 157     add_string( "mosaic-order", "", NULL, ORDER_TEXT, ORDER_TEXT, VLC_FALSE );
 158
 159     add_integer( "mosaic-delay", 0, NULL, DELAY_TEXT, DELAY_LONGTEXT,
 160                  VLC_FALSE );
 161
 162     add_bool( "mosaic-bs", 0, NULL, BLUESCREEN_TEXT,
 163               BLUESCREEN_TEXT, VLC_FALSE );
 164     add_integer( "mosaic-bsu", 120, NULL, BLUESCREENU_TEXT,
 165                  BLUESCREENU_TEXT, VLC_FALSE );
 166     add_integer( "mosaic-bsv", 90, NULL, BLUESCREENV_TEXT,
 167                  BLUESCREENV_TEXT, VLC_FALSE );
 168     add_integer( "mosaic-bsut", 17, NULL, BLUESCREENUTOL_TEXT,
 169                  BLUESCREENUTOL_TEXT, VLC_FALSE );
 170     add_integer( "mosaic-bsvt", 17, NULL, BLUESCREENVTOL_TEXT,
 171                  BLUESCREENVTOL_TEXT, VLC_FALSE );
 172
 173     var_Create( p_module->p_libvlc, "mosaic-lock", VLC_VAR_MUTEX );
 174 vlc_module_end();
 175
 176
 177 /*****************************************************************************
 178  * CreateFiler: allocate mosaic video filter
 179  *****************************************************************************/
 180 static int CreateFilter( vlc_object_t *p_this )
 181 {
 182     filter_t *p_filter = (filter_t *)p_this;
 183     filter_sys_t *p_sys;
 184     libvlc_t *p_libvlc = p_filter->p_libvlc;
 185     char *psz_order;
 186     int i_index;
 187     vlc_value_t val;
 188
 189     /* The mosaic thread is more important than the decoder threads */
 190     vlc_thread_set_priority( p_this, VLC_THREAD_PRIORITY_OUTPUT );
 191
 192     /* Allocate structure */
 193     p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 194     if( p_sys == NULL )
 195     {
 196         msg_Err( p_filter, "out of memory" );
 197         return VLC_ENOMEM;
 198     }
 199
 200     p_filter->pf_sub_filter = Filter;
 201     p_sys->p_pic = NULL;
 202
 203     vlc_mutex_init( p_filter, &p_sys->lock );
 204     vlc_mutex_lock( &p_sys->lock );
 205
 206     var_Get( p_libvlc, "mosaic-lock", &val );
 207     p_sys->p_lock = val.p_address;
 208
 209 #define GET_VAR( name, min, max )                                           \
 210     p_sys->i_##name = __MIN( max, __MAX( min,                               \
 211                 var_CreateGetInteger( p_filter, "mosaic-" #name ) ) );      \
 212     var_Destroy( p_filter, "mosaic-" #name );                               \
 213     var_Create( p_libvlc, "mosaic-" #name, VLC_VAR_INTEGER );               \
 214     var_SetInteger( p_libvlc, "mosaic-" #name, p_sys->i_##name );           \
 215     var_AddCallback( p_libvlc, "mosaic-" #name, MosaicCallback, p_sys );
 216
 217     GET_VAR( width, 0, INT_MAX );
 218     GET_VAR( height, 0, INT_MAX );
 219     GET_VAR( xoffset, 0, INT_MAX );
 220     GET_VAR( yoffset, 0, INT_MAX );
 221
 222     p_sys->i_align = __MIN( 10, __MAX( 0,  var_CreateGetInteger( p_filter, "mosaic-align" ) ) );
 223     if( p_sys->i_align == 3 || p_sys->i_align == 7 )
 224         p_sys->i_align = 5;
 225     var_Destroy( p_filter, "mosaic-align" );
 226     var_Create( p_libvlc, "mosaic-align", VLC_VAR_INTEGER );
 227     var_SetInteger( p_libvlc, "mosaic-align", p_sys->i_align );
 228     var_AddCallback( p_libvlc, "mosaic-align", MosaicCallback, p_sys );
 229
 230     GET_VAR( vborder, 0, INT_MAX );
 231     GET_VAR( hborder, 0, INT_MAX );
 232     GET_VAR( rows, 1, INT_MAX );
 233     GET_VAR( cols, 1, INT_MAX );
 234     GET_VAR( alpha, 0, 255 );
 235     GET_VAR( position, 0, 1 );
 236     GET_VAR( delay, 100, INT_MAX );
 237     p_sys->i_delay *= 1000;
 238
 239     p_sys->b_ar = var_CreateGetBool( p_filter, "mosaic-keep-aspect-ratio" );
 240     var_Destroy( p_filter, "mosaic-keep-aspect-ratio" );
 241     var_Create( p_libvlc, "mosaic-keep-aspect-ratio", VLC_VAR_INTEGER );
 242     var_SetBool( p_libvlc, "mosaic-keep-aspect-ratio", p_sys->b_ar );
 243     var_AddCallback( p_libvlc, "mosaic-keep-aspect-ratio", MosaicCallback,
 244                      p_sys );
 245
 246     p_sys->b_keep = var_CreateGetBool( p_filter, "mosaic-keep-picture" );
 247     if ( !p_sys->b_keep )
 248     {
 249         p_sys->p_image = image_HandlerCreate( p_filter );
 250     }
 251
 252     p_sys->i_order_length = 0;
 253     p_sys->ppsz_order = NULL;
 254     psz_order = var_CreateGetString( p_filter, "mosaic-order" );
 255
 256     if( psz_order[0] != 0 )
 257     {
 258         char *psz_end = NULL;
 259         i_index = 0;
 260         do
 261         {
 262             psz_end = strchr( psz_order, ',' );
 263             i_index++;
 264             p_sys->ppsz_order = realloc( p_sys->ppsz_order,
 265                                          i_index * sizeof(char *) );
 266             p_sys->ppsz_order[i_index - 1] = strndup( psz_order,
 267                                            psz_end - psz_order );
 268             psz_order = psz_end+1;
 269         } while( NULL !=  psz_end );
 270         p_sys->i_order_length = i_index;
 271     }
 272
 273     /* Bluescreen specific stuff */
 274     GET_VAR( bsu, 0x00, 0xff );
 275     GET_VAR( bsv, 0x00, 0xff );
 276     GET_VAR( bsut, 0x00, 0xff );
 277     GET_VAR( bsvt, 0x00, 0xff );
 278     p_sys->b_bs = var_CreateGetBool( p_filter, "mosaic-bs" );
 279     var_Destroy( p_filter, "mosaic-bs" );
 280     var_Create( p_libvlc, "mosaic-bs", VLC_VAR_INTEGER );
 281     var_SetBool( p_libvlc, "mosaic-bs", p_sys->b_bs );
 282     var_AddCallback( p_libvlc, "mosaic-bs", MosaicCallback, p_sys );
 283     if( p_sys->b_bs && p_sys->b_keep )
 284     {
 285         msg_Warn( p_filter, "mosaic-keep-picture needs to be disabled for"
 286                             " bluescreen to work" );
 287     }
 288
 289     vlc_mutex_unlock( &p_sys->lock );
 290
 291     return VLC_SUCCESS;
 292 }
 293
 294 /*****************************************************************************
 295  * DestroyFilter: destroy mosaic video filter
 296  *****************************************************************************/
 297 static void DestroyFilter( vlc_object_t *p_this )
 298 {
 299     filter_t *p_filter = (filter_t*)p_this;
 300     filter_sys_t *p_sys = p_filter->p_sys;
 301     libvlc_t *p_libvlc = p_filter->p_libvlc;
 302     int i_index;
 303
 304     vlc_mutex_lock( &p_sys->lock );
 305
 306     if( !p_sys->b_keep )
 307     {
 308         image_HandlerDelete( p_sys->p_image );
 309     }
 310
 311     if( p_sys->i_order_length )
 312     {
 313         for( i_index = 0; i_index < p_sys->i_order_length; i_index++ )
 314         {
 315             free( p_sys->ppsz_order[i_index] );
 316         }
 317         free( p_sys->ppsz_order );
 318     }
 319
 320     var_Destroy( p_libvlc, "mosaic-alpha" );
 321     var_Destroy( p_libvlc, "mosaic-height" );
 322     var_Destroy( p_libvlc, "mosaic-align" );
 323     var_Destroy( p_libvlc, "mosaic-width" );
 324     var_Destroy( p_libvlc, "mosaic-xoffset" );
 325     var_Destroy( p_libvlc, "mosaic-yoffset" );
 326     var_Destroy( p_libvlc, "mosaic-vborder" );
 327     var_Destroy( p_libvlc, "mosaic-hborder" );
 328     var_Destroy( p_libvlc, "mosaic-position" );
 329     var_Destroy( p_libvlc, "mosaic-rows" );
 330     var_Destroy( p_libvlc, "mosaic-cols" );
 331     var_Destroy( p_libvlc, "mosaic-keep-aspect-ratio" );
 332
 333     var_Destroy( p_libvlc, "mosaic-bsu" );
 334     var_Destroy( p_libvlc, "mosaic-bsv" );
 335     var_Destroy( p_libvlc, "mosaic-bsut" );
 336     var_Destroy( p_libvlc, "mosaic-bsvt" );
 337     var_Destroy( p_libvlc, "mosaic-bs" );
 338
 339     if( p_sys->p_pic ) p_sys->p_pic->pf_release( p_sys->p_pic );
 340     vlc_mutex_unlock( &p_sys->lock );
 341     vlc_mutex_destroy( &p_sys->lock );
 342     free( p_sys );
 343 }
 344
 345 /*****************************************************************************
 346  * MosaicReleasePicture : Hack to avoid picture duplication
 347  *****************************************************************************/
 348 static void MosaicReleasePicture( picture_t *p_picture )
 349 {
 350     picture_t *p_original_pic = (picture_t *)p_picture->p_sys;
 351
 352     p_original_pic->pf_release( p_original_pic );
 353 }
 354
 355 /*****************************************************************************
 356  * Filter
 357  *****************************************************************************/
 358 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
 359 {
 360     filter_sys_t *p_sys = p_filter->p_sys;
 361     bridge_t *p_bridge;
 362
 363     subpicture_t *p_spu;
 364
 365     int i_index, i_real_index, i_row, i_col;
 366     int i_greatest_real_index_used = p_sys->i_order_length - 1;
 367
 368     subpicture_region_t *p_region;
 369     subpicture_region_t *p_region_prev = NULL;
 370
 371     /* Allocate the subpicture internal data. */
 372     p_spu = p_filter->pf_sub_buffer_new( p_filter );
 373     if( !p_spu )
 374     {
 375         return NULL;
 376     }
 377
 378     /* Initialize subpicture */
 379     p_spu->i_channel = 0;
 380     p_spu->i_start  = date;
 381     p_spu->i_stop = 0;
 382     p_spu->b_ephemer = VLC_TRUE;
 383     p_spu->i_alpha = p_sys->i_alpha;
 384     p_spu->i_flags = p_sys->i_align;
 385     p_spu->b_absolute = VLC_FALSE;
 386
 387     vlc_mutex_lock( &p_sys->lock );
 388     vlc_mutex_lock( p_sys->p_lock );
 389
 390     p_bridge = GetBridge( p_filter );
 391     if ( p_bridge == NULL )
 392     {
 393         vlc_mutex_unlock( p_sys->p_lock );
 394         vlc_mutex_unlock( &p_sys->lock );
 395         return p_spu;
 396     }
 397
 398     if ( p_sys->i_position == 0 ) /* use automatic positioning */
 399     {
 400         int i_numpics = p_sys->i_order_length; /* keep slots and all */
 401         for ( i_index = 0; i_index < p_bridge->i_es_num; i_index++ )
 402         {
 403             bridged_es_t *p_es = p_bridge->pp_es[i_index];
 404             if ( !p_es->b_empty )
 405             {
 406                 i_numpics ++;
 407                 if( p_sys->i_order_length && p_es->psz_id != 0 )
 408                 {
 409                     /* We also want to leave slots for images given in
 410                      * mosaic-order that are not available in p_vout_picture */
 411                     int i;
 412                     for( i = 0; i < p_sys->i_order_length ; i++ )
 413                     {
 414                         if( !strcmp( p_sys->ppsz_order[i], p_es->psz_id ) )
 415                         {
 416                             i_numpics--;
 417                             break;
 418                         }
 419                     }
 420
 421                 }
 422             }
 423         }
 424         p_sys->i_rows = ((int)ceil(sqrt( (float)i_numpics )));
 425         p_sys->i_cols = ( i_numpics % p_sys->i_rows == 0 ?
 426                             i_numpics / p_sys->i_rows :
 427                             i_numpics / p_sys->i_rows + 1 );
 428     }
 429
 430     i_real_index = 0;
 431
 432     for ( i_index = 0; i_index < p_bridge->i_es_num; i_index++ )
 433     {
 434         bridged_es_t *p_es = p_bridge->pp_es[i_index];
 435         video_format_t fmt_in = {0}, fmt_out = {0};
 436         picture_t *p_converted;
 437
 438         if ( p_es->b_empty )
 439             continue;
 440
 441         while ( p_es->p_picture != NULL
 442                  && p_es->p_picture->date + p_sys->i_delay < date )
 443         {
 444             if ( p_es->p_picture->p_next != NULL )
 445             {
 446                 picture_t *p_next = p_es->p_picture->p_next;
 447                 p_es->p_picture->pf_release( p_es->p_picture );
 448                 p_es->p_picture = p_next;
 449             }
 450             else if ( p_es->p_picture->date + p_sys->i_delay + BLANK_DELAY <
 451                         date )
 452             {
 453                 /* Display blank */
 454                 p_es->p_picture->pf_release( p_es->p_picture );
 455                 p_es->p_picture = NULL;
 456                 p_es->pp_last = &p_es->p_picture;
 457                 break;
 458             }
 459             else
 460             {
 461                 msg_Dbg( p_filter, "too late picture for %s (" I64Fd ")",
 462                          p_es->psz_id,
 463                          date - p_es->p_picture->date - p_sys->i_delay );
 464                 break;
 465             }
 466         }
 467
 468         if ( p_es->p_picture == NULL )
 469             continue;
 470
 471         if ( p_sys->i_order_length == 0 )
 472         {
 473             i_real_index++;
 474         }
 475         else
 476         {
 477             int i;
 478             for ( i = 0; i <= p_sys->i_order_length; i++ )
 479             {
 480                 if ( i == p_sys->i_order_length ) break;
 481                 if ( strcmp( p_es->psz_id, p_sys->ppsz_order[i] ) == 0 )
 482                 {
 483                     i_real_index = i;
 484                     break;
 485                 }
 486             }
 487             if ( i == p_sys->i_order_length )
 488                 i_real_index = ++i_greatest_real_index_used;
 489         }
 490         i_row = ( i_real_index / p_sys->i_cols ) % p_sys->i_rows;
 491         i_col = i_real_index % p_sys->i_cols ;
 492
 493         if ( !p_sys->b_keep )
 494         {
 495             /* Convert the images */
 496             fmt_in.i_chroma = p_es->p_picture->format.i_chroma;
 497             fmt_in.i_height = p_es->p_picture->format.i_height;
 498             fmt_in.i_width = p_es->p_picture->format.i_width;
 499
 500             fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 501             fmt_out.i_width = fmt_in.i_width *
 502                 ( ( p_sys->i_width - ( p_sys->i_cols - 1 ) * p_sys->i_vborder )
 503                   / p_sys->i_cols ) / fmt_in.i_width;
 504             fmt_out.i_height = fmt_in.i_height *
 505                 ( ( p_sys->i_height - ( p_sys->i_rows - 1 ) * p_sys->i_hborder )
 506                   / p_sys->i_rows ) / fmt_in.i_height;
 507             if( p_sys->b_ar ) /* keep aspect ratio */
 508             {
 509                 if( (float)fmt_out.i_width / (float)fmt_out.i_height
 510                       > (float)fmt_in.i_width / (float)fmt_in.i_height )
 511                 {
 512                     fmt_out.i_width = ( fmt_out.i_height * fmt_in.i_width )
 513                                          / fmt_in.i_height;
 514                 }
 515                 else
 516                 {
 517                     fmt_out.i_height = ( fmt_out.i_width * fmt_in.i_height )
 518                                         / fmt_in.i_width;
 519                 }
 520              }
 521
 522             fmt_out.i_visible_width = fmt_out.i_width;
 523             fmt_out.i_visible_height = fmt_out.i_height;
 524
 525             p_converted = image_Convert( p_sys->p_image, p_es->p_picture,
 526                                          &fmt_in, &fmt_out );
 527             if( !p_converted )
 528             {
 529                 msg_Warn( p_filter,
 530                            "image resizing and chroma conversion failed" );
 531                 continue;
 532             }
 533
 534             /* Bluescreen stuff */
 535             if( p_sys->b_bs )
 536             {
 537                 int i,j;
 538                 int i_lines = p_converted->p[ A_PLANE ].i_lines;
 539                 int i_pitch = p_converted->p[ A_PLANE ].i_pitch;
 540                 uint8_t *p_a = p_converted->p[ A_PLANE ].p_pixels;
 541                 uint8_t *p_at = malloc( i_lines * i_pitch * sizeof( uint8_t ) );
 542                 uint8_t *p_u = p_converted->p[ U_PLANE ].p_pixels;
 543                 uint8_t *p_v = p_converted->p[ V_PLANE ].p_pixels;
 544                 uint8_t umin, umax, vmin, vmax;
 545                 umin = p_sys->i_bsu - p_sys->i_bsut >= 0x00 ?
 546                        p_sys->i_bsu - p_sys->i_bsut : 0x00;
 547                 umax = p_sys->i_bsu + p_sys->i_bsut <= 0xff ?
 548                        p_sys->i_bsu + p_sys->i_bsut : 0xff;
 549                 vmin = p_sys->i_bsv - p_sys->i_bsvt >= 0x00 ?
 550                        p_sys->i_bsv - p_sys->i_bsvt : 0x00;
 551                 vmax = p_sys->i_bsv + p_sys->i_bsvt <= 0xff ?
 552                        p_sys->i_bsv + p_sys->i_bsvt : 0xff;
 553
 554                 for( i = 0; i < i_lines*i_pitch; i++ )
 555                 {
 556                     if(    p_u[i] < umax
 557                         && p_u[i] > umin
 558                         && p_v[i] < vmax
 559                         && p_v[i] > vmin )
 560                     {
 561                         p_at[i] = 0x00;
 562                     }
 563                     else
 564                     {
 565                         p_at[i] = 0xff;
 566                     }
 567                 }
 568                 /* Gaussian convolution to make it look cleaner */
 569                 memset( p_a, 0, 2 * i_pitch );
 570                 for( i = 2; i < i_lines - 2; i++ )
 571                 {
 572                     p_a[i*i_pitch] = 0x00;
 573                     p_a[i*i_pitch+1] = 0x00;
 574                     for( j = 2; j < i_pitch - 2; j ++ )
 575                     {
 576                         p_a[i*i_pitch+j] = (uint8_t)((
 577                           /* 2 rows up */
 578                             ( p_at[(i-2)*i_pitch+j-2]<<1 )
 579                           + ( p_at[(i-2)*i_pitch+j-1]<<2 )
 580                           + ( p_at[(i-2)*i_pitch+j]<<2 )
 581                           + ( p_at[(i-2)*i_pitch+j+1]<<2 )
 582                           + ( p_at[(i-2)*i_pitch+j+2]<<1 )
 583                           /* 1 row up */
 584                           + ( p_at[(i-1)*i_pitch+j-1]<<3 )
 585                           + ( p_at[(i-1)*i_pitch+j-2]<<2 )
 586                           + ( p_at[(i-1)*i_pitch+j]*12 )
 587                           + ( p_at[(i-1)*i_pitch+j+1]<<3 )
 588                           + ( p_at[(i-1)*i_pitch+j+2]<<2 )
 589                           /* */
 590                           + ( p_at[i*i_pitch+j-2]<<2 )
 591                           + ( p_at[i*i_pitch+j-1]*12 )
 592                           + ( p_at[i*i_pitch+j]<<4 )
 593                           + ( p_at[i*i_pitch+j+1]*12 )
 594                           + ( p_at[i*i_pitch+j+2]<<2 )
 595                           /* 1 row down */
 596                           + ( p_at[(i+1)*i_pitch+j-2]<<2 )
 597                           + ( p_at[(i+1)*i_pitch+j-1]<<3 )
 598                           + ( p_at[(i+1)*i_pitch+j]*12 )
 599                           + ( p_at[(i+1)*i_pitch+j+1]<<3 )
 600                           + ( p_at[(i+1)*i_pitch+j+2]<<2 )
 601                           /* 2 rows down */
 602                           + ( p_at[(i+2)*i_pitch+j-2]<<1 )
 603                           + ( p_at[(i+2)*i_pitch+j-1]<<2 )
 604                           + ( p_at[(i+2)*i_pitch+j]<<2 )
 605                           + ( p_at[(i+2)*i_pitch+j+1]<<2 )
 606                           + ( p_at[(i+2)*i_pitch+j+2]<<1 )
 607                           )/152);
 608                           if( p_a[i*i_pitch+j] < 0xbf ) p_a[i*i_pitch+j] = 0x00;
 609                     }
 610                 }
 611                 free( p_at );
 612             }
 613         }
 614         else
 615         {
 616             p_converted = p_es->p_picture;
 617             p_converted->i_refcount++;
 618             fmt_in.i_width = fmt_out.i_width = p_converted->format.i_width;
 619             fmt_in.i_height = fmt_out.i_height = p_converted->format.i_height;
 620             fmt_in.i_chroma = fmt_out.i_chroma = p_converted->format.i_chroma;
 621             fmt_out.i_visible_width = fmt_out.i_width;
 622             fmt_out.i_visible_height = fmt_out.i_height;
 623         }
 624
 625         p_region = p_spu->pf_make_region( VLC_OBJECT(p_filter), &fmt_out,
 626                                           p_converted );
 627         if( !p_region )
 628         {
 629             msg_Err( p_filter, "cannot allocate SPU region" );
 630             p_filter->pf_sub_buffer_del( p_filter, p_spu );
 631             vlc_mutex_unlock( &p_sys->lock );
 632             vlc_mutex_unlock( p_sys->p_lock );
 633             return p_spu;
 634         }
 635
 636         /* HACK ALERT : let's fix the pointers to avoid picture duplication.
 637          * This is necessary because p_region->picture is not a pointer
 638          * as it ought to be. */
 639         if( !p_sys->b_keep )
 640         {
 641             free( p_converted );
 642         }
 643         else
 644         {
 645             /* Keep a pointer to the original picture (and its refcount...). */
 646             p_region->picture.p_sys = (picture_sys_t *)p_converted;
 647             p_region->picture.pf_release = MosaicReleasePicture;
 648         }
 649
 650         if( p_sys->b_ar || p_sys->b_keep ) /* keep aspect ratio */
 651         {
 652             /* center the video in the dedicated rectangle */
 653             p_region->i_x = p_sys->i_xoffset
 654                         + i_col * ( p_sys->i_width / p_sys->i_cols )
 655                         + ( i_col * p_sys->i_vborder ) / p_sys->i_cols
 656                         + ( ( ( p_sys->i_width
 657                                  - ( p_sys->i_cols - 1 ) * p_sys->i_vborder )
 658                             / p_sys->i_cols ) - fmt_out.i_width ) / 2;
 659             p_region->i_y = p_sys->i_yoffset
 660                         + i_row * ( p_sys->i_height / p_sys->i_rows )
 661                         + ( i_row * p_sys->i_hborder ) / p_sys->i_rows
 662                         + ( ( ( p_sys->i_height
 663                                  - ( p_sys->i_rows - 1 ) * p_sys->i_hborder )
 664                             / p_sys->i_rows ) - fmt_out.i_height ) / 2;
 665         }
 666         else
 667         {
 668             /* we don't have to center the video since it takes the
 669             whole rectangle area */
 670             p_region->i_x = p_sys->i_xoffset
 671                             + i_col * ( p_sys->i_width / p_sys->i_cols )
 672                             + ( i_col * p_sys->i_vborder ) / p_sys->i_cols;
 673             p_region->i_y = p_sys->i_yoffset
 674                         + i_row * ( p_sys->i_height / p_sys->i_rows )
 675                         + ( i_row * p_sys->i_hborder ) / p_sys->i_rows;
 676         }
 677
 678         if( p_region_prev == NULL )
 679         {
 680             p_spu->p_region = p_region;
 681         }
 682         else
 683         {
 684             p_region_prev->p_next = p_region;
 685         }
 686
 687         p_region_prev = p_region;
 688     }
 689
 690     vlc_mutex_unlock( p_sys->p_lock );
 691     vlc_mutex_unlock( &p_sys->lock );
 692
 693     return p_spu;
 694 }
 695
 696 /*****************************************************************************
 697 * Callback to update params on the fly
 698 *****************************************************************************/
 699 static int MosaicCallback( vlc_object_t *p_this, char const *psz_var,
 700                             vlc_value_t oldval, vlc_value_t newval,
 701                             void *p_data )
 702 {
 703     filter_sys_t *p_sys = (filter_sys_t *) p_data;
 704     if( !strcmp( psz_var, "mosaic-alpha" ) )
 705     {
 706         vlc_mutex_lock( &p_sys->lock );
 707         msg_Dbg( p_this, "Changing alpha from %d/255 to %d/255",
 708                          p_sys->i_alpha, newval.i_int);
 709         p_sys->i_alpha = __MIN( __MAX( newval.i_int, 0 ), 255 );
 710         vlc_mutex_unlock( &p_sys->lock );
 711     }
 712     else if( !strcmp( psz_var, "mosaic-height" ) )
 713     {
 714         vlc_mutex_lock( &p_sys->lock );
 715         msg_Dbg( p_this, "Changing height from %dpx to %dpx",
 716                           p_sys->i_height, newval.i_int );
 717         p_sys->i_height = __MAX( newval.i_int, 0 );
 718         vlc_mutex_unlock( &p_sys->lock );
 719     }
 720     else if( !strcmp( psz_var, "mosaic-width" ) )
 721     {
 722         vlc_mutex_lock( &p_sys->lock );
 723         msg_Dbg( p_this, "Changing width from %dpx to %dpx",
 724                          p_sys->i_width, newval.i_int );
 725         p_sys->i_width = __MAX( newval.i_int, 0 );
 726         vlc_mutex_unlock( &p_sys->lock );
 727     }
 728     else if( !strcmp( psz_var, "mosaic-xoffset" ) )
 729     {
 730         vlc_mutex_lock( &p_sys->lock );
 731         msg_Dbg( p_this, "Changing x offset from %dpx to %dpx",
 732                          p_sys->i_xoffset, newval.i_int );
 733         p_sys->i_xoffset = __MAX( newval.i_int, 0 );
 734         vlc_mutex_unlock( &p_sys->lock );
 735     }
 736     else if( !strcmp( psz_var, "mosaic-yoffset" ) )
 737     {
 738         vlc_mutex_lock( &p_sys->lock );
 739         msg_Dbg( p_this, "Changing y offset from %dpx to %dpx",
 740                          p_sys->i_yoffset, newval.i_int );
 741         p_sys->i_yoffset = __MAX( newval.i_int, 0 );
 742         vlc_mutex_unlock( &p_sys->lock );
 743     }
 744     else if( !strcmp( psz_var, "mosaic-align" ) )
 745     {
 746         int i_old = 0, i_new = 0;
 747         vlc_mutex_lock( &p_sys->lock );
 748         newval.i_int = __MIN( __MAX( newval.i_int, 0 ), 10 );
 749         if( newval.i_int == 3 || newval.i_int == 7 )
 750             newval.i_int = 5;
 751         while( pi_align_values[i_old] != p_sys->i_align ) i_old++;
 752         while( pi_align_values[i_new] != newval.i_int ) i_new++;
 753         msg_Dbg( p_this, "Changing alignment from %d (%s) to %d (%s)",
 754                      p_sys->i_align, ppsz_align_descriptions[i_old],
 755                      newval.i_int, ppsz_align_descriptions[i_new] );
 756         p_sys->i_align = newval.i_int;
 757         vlc_mutex_unlock( &p_sys->lock );
 758     }
 759     else if( !strcmp( psz_var, "mosaic-vborder" ) )
 760     {
 761         vlc_mutex_lock( &p_sys->lock );
 762         msg_Dbg( p_this, "Changing vertical border from %dpx to %dpx",
 763                          p_sys->i_vborder, newval.i_int );
 764         p_sys->i_vborder = __MAX( newval.i_int, 0 );
 765         vlc_mutex_unlock( &p_sys->lock );
 766     }
 767     else if( !strcmp( psz_var, "mosaic-hborder" ) )
 768     {
 769         vlc_mutex_lock( &p_sys->lock );
 770         msg_Dbg( p_this, "Changing horizontal border from %dpx to %dpx",
 771                          p_sys->i_vborder, newval.i_int );
 772         p_sys->i_hborder = __MAX( newval.i_int, 0 );
 773         vlc_mutex_unlock( &p_sys->lock );
 774     }
 775     else if( !strcmp( psz_var, "mosaic-position" ) )
 776     {
 777         if( newval.i_int > 1 || newval.i_int < 0 )
 778         {
 779             msg_Err( p_this, "Position is either 0 (auto) or 1 (fixed)" );
 780         }
 781         else
 782         {
 783             vlc_mutex_lock( &p_sys->lock );
 784             msg_Dbg( p_this, "Changing position method from %d (%s) to %d (%s)",
 785                              p_sys->i_position, ppsz_pos_descriptions[p_sys->i_position],
 786                              newval.i_int, ppsz_pos_descriptions[newval.i_int]);
 787             p_sys->i_position = newval.i_int;
 788             vlc_mutex_unlock( &p_sys->lock );
 789         }
 790     }
 791     else if( !strcmp( psz_var, "mosaic-rows" ) )
 792     {
 793         vlc_mutex_lock( &p_sys->lock );
 794         msg_Dbg( p_this, "Changing number of rows from %d to %d",
 795                          p_sys->i_rows, newval.i_int );
 796         p_sys->i_rows = __MAX( newval.i_int, 1 );
 797         vlc_mutex_unlock( &p_sys->lock );
 798     }
 799     else if( !strcmp( psz_var, "mosaic-cols" ) )
 800     {
 801         vlc_mutex_lock( &p_sys->lock );
 802         msg_Dbg( p_this, "Changing number of columns from %d to %d",
 803                          p_sys->i_cols, newval.i_int );
 804         p_sys->i_cols = __MAX( newval.i_int, 1 );
 805         vlc_mutex_unlock( &p_sys->lock );
 806     }
 807     else if( !strcmp( psz_var, "mosaic-keep-aspect-ratio" ) )
 808     {
 809         vlc_mutex_lock( &p_sys->lock );
 810         if( newval.i_int )
 811         {
 812             msg_Dbg( p_this, "Keep aspect ratio" );
 813             p_sys->b_ar = 1;
 814         }
 815         else
 816         {
 817             msg_Dbg( p_this, "Don't keep aspect ratio" );
 818             p_sys->b_ar = 0;
 819         }
 820         vlc_mutex_unlock( &p_sys->lock );
 821     }
 822     return VLC_SUCCESS;
 823 }