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

   1 /*****************************************************************************
   2  * wall.c : Wall video plugin for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2000, 2001, 2002, 2003 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27
  28 #include <vlc/vlc.h>
  29 #include <vlc_vout.h>
  30
  31 #include "filter_common.h"
  32
  33 /*****************************************************************************
  34  * Local prototypes
  35  *****************************************************************************/
  36 static int  Create    ( vlc_object_t * );
  37 static void Destroy   ( vlc_object_t * );
  38
  39 static int  Init      ( vout_thread_t * );
  40 static void End       ( vout_thread_t * );
  41 static void Render    ( vout_thread_t *, picture_t * );
  42
  43 static void RemoveAllVout  ( vout_thread_t *p_vout );
  44
  45 static int  SendEvents( vlc_object_t *, char const *,
  46                         vlc_value_t, vlc_value_t, void * );
  47
  48 /*****************************************************************************
  49  * Module descriptor
  50  *****************************************************************************/
  51 #define COLS_TEXT N_("Number of columns")
  52 #define COLS_LONGTEXT N_("Number of horizontal windows in " \
  53     "which to split the video.")
  54
  55 #define ROWS_TEXT N_("Number of rows")
  56 #define ROWS_LONGTEXT N_("Number of vertical windows in " \
  57     "which to split the video.")
  58
  59 #define ACTIVE_TEXT N_("Active windows")
  60 #define ACTIVE_LONGTEXT N_("Comma-separated list of active windows, " \
  61     "defaults to all")
  62
  63 #define ASPECT_TEXT N_("Element aspect ratio")
  64 #define ASPECT_LONGTEXT N_("Aspect ratio of the individual displays " \
  65    "building the wall.")
  66
  67 #define CFG_PREFIX "wall-"
  68
  69 vlc_module_begin();
  70     set_description( _("Wall video filter") );
  71     set_shortname( _("Image wall" ));
  72     set_capability( "video filter", 0 );
  73     set_category( CAT_VIDEO );
  74     set_subcategory( SUBCAT_VIDEO_VFILTER );
  75
  76     add_integer( CFG_PREFIX "cols", 3, NULL, COLS_TEXT, COLS_LONGTEXT, VLC_FALSE );
  77     add_integer( CFG_PREFIX "rows", 3, NULL, ROWS_TEXT, ROWS_LONGTEXT, VLC_FALSE );
  78     add_string( CFG_PREFIX "active", NULL, NULL, ACTIVE_TEXT, ACTIVE_LONGTEXT,
  79                  VLC_TRUE );
  80     add_string( CFG_PREFIX "element-aspect", "4:3", NULL, ASPECT_TEXT, ASPECT_LONGTEXT, VLC_FALSE );
  81
  82     add_shortcut( "wall" );
  83     set_callbacks( Create, Destroy );
  84 vlc_module_end();
  85
  86 static const char *ppsz_filter_options[] = {
  87     "cols", "rows", "active", "element-aspect", NULL
  88 };
  89
  90 /*****************************************************************************
  91  * vout_sys_t: Wall video output method descriptor
  92  *****************************************************************************
  93  * This structure is part of the video output thread descriptor.
  94  * It describes the Wall specific properties of an output thread.
  95  *****************************************************************************/
  96 struct vout_sys_t
  97 {
  98     int    i_col;
  99     int    i_row;
 100     int    i_vout;
 101     struct vout_list_t
 102     {
 103         vlc_bool_t b_active;
 104         int i_width;
 105         int i_height;
 106         int i_left;
 107         int i_top;
 108         vout_thread_t *p_vout;
 109     } *pp_vout;
 110 };
 111
 112 /*****************************************************************************
 113  * Control: control facility for the vout (forwards to child vout)
 114  *****************************************************************************/
 115 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 116 {
 117     int i_row, i_col, i_vout = 0;
 118
 119     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 120     {
 121         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 122         {
 123             vout_vaControl( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 124                             i_query, args );
 125             i_vout++;
 126         }
 127     }
 128     return VLC_SUCCESS;
 129 }
 130
 131 /*****************************************************************************
 132  * Create: allocates Wall video thread output method
 133  *****************************************************************************
 134  * This function allocates and initializes a Wall vout method.
 135  *****************************************************************************/
 136 static int Create( vlc_object_t *p_this )
 137 {
 138     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 139     char *psz_method, *psz_tmp, *psz_method_tmp;
 140     int i_vout;
 141
 142     /* Allocate structure */
 143     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 144     if( p_vout->p_sys == NULL )
 145     {
 146         msg_Err( p_vout, "out of memory" );
 147         return VLC_ENOMEM;
 148     }
 149
 150     p_vout->pf_init = Init;
 151     p_vout->pf_end = End;
 152     p_vout->pf_manage = NULL;
 153     p_vout->pf_render = Render;
 154     p_vout->pf_display = NULL;
 155     p_vout->pf_control = Control;
 156
 157     config_ChainParse( p_vout, CFG_PREFIX, ppsz_filter_options,
 158                        p_vout->p_cfg );
 159
 160     /* Look what method was requested */
 161     p_vout->p_sys->i_col = var_CreateGetInteger( p_vout, CFG_PREFIX "cols" );
 162     p_vout->p_sys->i_row = var_CreateGetInteger( p_vout, CFG_PREFIX "rows" );
 163
 164     p_vout->p_sys->i_col = __MAX( 1, __MIN( 15, p_vout->p_sys->i_col ) );
 165     p_vout->p_sys->i_row = __MAX( 1, __MIN( 15, p_vout->p_sys->i_row ) );
 166
 167     msg_Dbg( p_vout, "opening a %i x %i wall",
 168              p_vout->p_sys->i_col, p_vout->p_sys->i_row );
 169
 170     p_vout->p_sys->pp_vout = malloc( p_vout->p_sys->i_row *
 171                                      p_vout->p_sys->i_col *
 172                                      sizeof(struct vout_list_t) );
 173     if( p_vout->p_sys->pp_vout == NULL )
 174     {
 175         msg_Err( p_vout, "out of memory" );
 176         free( p_vout->p_sys );
 177         return VLC_ENOMEM;
 178     }
 179
 180     psz_method_tmp =
 181     psz_method = var_CreateGetNonEmptyString( p_vout, CFG_PREFIX "active" );
 182
 183     /* If no trailing vout are specified, take them all */
 184     if( psz_method == NULL )
 185     {
 186         for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
 187              i_vout--; )
 188         {
 189             p_vout->p_sys->pp_vout[i_vout].b_active = 1;
 190         }
 191     }
 192     /* If trailing vout are specified, activate only the requested ones */
 193     else
 194     {
 195         for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
 196              i_vout--; )
 197         {
 198             p_vout->p_sys->pp_vout[i_vout].b_active = 0;
 199         }
 200
 201         while( *psz_method )
 202         {
 203             psz_tmp = psz_method;
 204             while( *psz_tmp && *psz_tmp != ',' )
 205             {
 206                 psz_tmp++;
 207             }
 208
 209             if( *psz_tmp )
 210             {
 211                 *psz_tmp = '\0';
 212                 i_vout = atoi( psz_method );
 213                 psz_method = psz_tmp + 1;
 214             }
 215             else
 216             {
 217                 i_vout = atoi( psz_method );
 218                 psz_method = psz_tmp;
 219             }
 220
 221             if( i_vout >= 0 &&
 222                 i_vout < p_vout->p_sys->i_row * p_vout->p_sys->i_col )
 223             {
 224                 p_vout->p_sys->pp_vout[i_vout].b_active = 1;
 225             }
 226         }
 227     }
 228
 229     free( psz_method_tmp );
 230
 231     return VLC_SUCCESS;
 232 }
 233
 234 /*****************************************************************************
 235  * Init: initialize Wall video thread output method
 236  *****************************************************************************/
 237 static int Init( vout_thread_t *p_vout )
 238 {
 239     int i_index, i_row, i_col, i_width, i_height, i_left, i_top;
 240     unsigned int i_target_width,i_target_height;
 241     picture_t *p_pic;
 242     video_format_t fmt;
 243     int i_aspect = 4*VOUT_ASPECT_FACTOR/3;
 244     int i_align = 0;
 245     unsigned int i_hstart, i_hend, i_vstart, i_vend;
 246     unsigned int w1,h1,w2,h2;
 247     int i_xpos, i_ypos;
 248     int i_vstart_rounded = 0, i_hstart_rounded = 0;
 249     char *psz_aspect;
 250
 251     memset( &fmt, 0, sizeof(video_format_t) );
 252
 253     psz_aspect = var_CreateGetNonEmptyString( p_vout,
 254                                               CFG_PREFIX "element-aspect" );
 255     if( psz_aspect && *psz_aspect )
 256     {
 257         char *psz_parser = strchr( psz_aspect, ':' );
 258         if( psz_parser )
 259         {
 260             *psz_parser++ = '\0';
 261             i_aspect = atoi( psz_aspect ) * VOUT_ASPECT_FACTOR
 262                 / atoi( psz_parser );
 263         }
 264         else
 265         {
 266             msg_Warn( p_vout, "invalid aspect ratio specification" );
 267         }
 268         free( psz_aspect );
 269     }
 270
 271     i_xpos = var_CreateGetInteger( p_vout, "video-x" );
 272     i_ypos = var_CreateGetInteger( p_vout, "video-y" );
 273     if( i_xpos < 0 ) i_xpos = 0;
 274     if( i_ypos < 0 ) i_ypos = 0;
 275
 276     I_OUTPUTPICTURES = 0;
 277
 278     /* Initialize the output structure */
 279     p_vout->output.i_chroma = p_vout->render.i_chroma;
 280     p_vout->output.i_width  = p_vout->render.i_width;
 281     p_vout->output.i_height = p_vout->render.i_height;
 282     p_vout->output.i_aspect = p_vout->render.i_aspect;
 283     var_Create( p_vout, "align", VLC_VAR_INTEGER );
 284
 285     fmt.i_width = fmt.i_visible_width = p_vout->render.i_width;
 286     fmt.i_height = fmt.i_visible_height = p_vout->render.i_height;
 287     fmt.i_x_offset = fmt.i_y_offset = 0;
 288     fmt.i_chroma = p_vout->render.i_chroma;
 289     fmt.i_aspect = p_vout->render.i_aspect;
 290     fmt.i_sar_num = p_vout->render.i_aspect * fmt.i_height / fmt.i_width;
 291     fmt.i_sar_den = VOUT_ASPECT_FACTOR;
 292
 293     w1 = p_vout->output.i_width / p_vout->p_sys->i_col;
 294     w1 &= ~1;
 295     h1 = w1 * VOUT_ASPECT_FACTOR / i_aspect&~1;
 296     h1 &= ~1;
 297
 298     h2 = p_vout->output.i_height / p_vout->p_sys->i_row&~1;
 299     h2 &= ~1;
 300     w2 = h2 * i_aspect / VOUT_ASPECT_FACTOR&~1;
 301     w2 &= ~1;
 302
 303     if ( h1 * p_vout->p_sys->i_row < p_vout->output.i_height )
 304     {
 305         unsigned int i_tmp;
 306         i_target_width = w2;
 307         i_target_height = h2;
 308         i_vstart = 0;
 309         i_vend = p_vout->output.i_height;
 310         i_tmp = i_target_width * p_vout->p_sys->i_col;
 311         while( i_tmp < p_vout->output.i_width ) i_tmp += p_vout->p_sys->i_col;
 312         i_hstart = (( i_tmp - p_vout->output.i_width ) / 2)&~1;
 313         i_hstart_rounded  = ( ( i_tmp - p_vout->output.i_width ) % 2 ) ||
 314             ( ( ( i_tmp - p_vout->output.i_width ) / 2 ) & 1 );
 315         i_hend = i_hstart + p_vout->output.i_width;
 316     }
 317     else
 318     {
 319         unsigned int i_tmp;
 320         i_target_height = h1;
 321         i_target_width = w1;
 322         i_hstart = 0;
 323         i_hend = p_vout->output.i_width;
 324         i_tmp = i_target_height * p_vout->p_sys->i_row;
 325         while( i_tmp < p_vout->output.i_height ) i_tmp += p_vout->p_sys->i_row;
 326         i_vstart = ( ( i_tmp - p_vout->output.i_height ) / 2 ) & ~1;
 327         i_vstart_rounded  = ( ( i_tmp - p_vout->output.i_height ) % 2 ) ||
 328             ( ( ( i_tmp - p_vout->output.i_height ) / 2 ) & 1 );
 329         i_vend = i_vstart + p_vout->output.i_height;
 330     }
 331     msg_Dbg( p_vout, "target resolution %dx%d", i_target_width, i_target_height );
 332
 333     /* Try to open the real video output */
 334     msg_Dbg( p_vout, "spawning the real video outputs" );
 335
 336     p_vout->p_sys->i_vout = 0;
 337     msg_Dbg( p_vout, "target window (%d,%d)-(%d,%d)", i_hstart,i_vstart,i_hend,i_vend );
 338
 339
 340     i_top = 0;
 341     i_height = 0;
 342     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 343     {
 344         i_left = 0;
 345         i_top += i_height;
 346         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 347         {
 348             i_align = 0;
 349
 350             if( i_col*i_target_width >= i_hstart &&
 351                 (i_col+1)*i_target_width <= i_hend )
 352             {
 353                 i_width = i_target_width;
 354             }
 355             else if( ( i_col + 1 ) * i_target_width < i_hstart ||
 356                      ( i_col * i_target_width ) > i_hend )
 357             {
 358                 i_width = 0;
 359             }
 360             else
 361             {
 362                 i_width = ( i_target_width - i_hstart % i_target_width );
 363                 if( i_col >= ( p_vout->p_sys->i_col / 2 ) )
 364                 {
 365                     i_align |= VOUT_ALIGN_LEFT;
 366                     i_width -= i_hstart_rounded ? 2: 0;
 367                 }
 368                 else
 369                 {
 370                     i_align |= VOUT_ALIGN_RIGHT;
 371                 }
 372             }
 373
 374             if( i_row * i_target_height >= i_vstart &&
 375                 ( i_row + 1 ) * i_target_height <= i_vend )
 376             {
 377                 i_height = i_target_height;
 378             }
 379             else if( ( i_row + 1 ) * i_target_height < i_vstart ||
 380                      ( i_row * i_target_height ) > i_vend )
 381             {
 382                 i_height = 0;
 383             }
 384             else
 385             {
 386                 i_height = ( i_target_height -
 387                              i_vstart%i_target_height );
 388                 if(  i_row >= ( p_vout->p_sys->i_row / 2 ) )
 389                 {
 390                     i_align |= VOUT_ALIGN_TOP;
 391                     i_height -= i_vstart_rounded ? 2: 0;
 392                 }
 393                 else
 394                 {
 395                     i_align |= VOUT_ALIGN_BOTTOM;
 396                 }
 397             }
 398             if( i_height == 0 || i_width == 0 )
 399             {
 400                 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active = VLC_FALSE;
 401             }
 402
 403             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_width = i_width;
 404             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_height = i_height;
 405             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_left = i_left;
 406             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_top = i_top;
 407             i_left += i_width;
 408
 409             if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
 410             {
 411                 p_vout->p_sys->i_vout++;
 412                 continue;
 413             }
 414             var_SetInteger( p_vout, "align", i_align );
 415             var_SetInteger( p_vout, "video-x", i_left + i_xpos - i_width);
 416             var_SetInteger( p_vout, "video-y", i_top + i_ypos );
 417
 418             fmt.i_width = fmt.i_visible_width = i_width;
 419             fmt.i_height = fmt.i_visible_height = i_height;
 420             fmt.i_aspect = i_aspect * i_target_height / i_height *
 421                 i_width / i_target_width;
 422
 423             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout =
 424                 vout_Create( p_vout, &fmt );
 425             if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout )
 426             {
 427                 msg_Err( p_vout, "failed to get %ix%i vout threads",
 428                                  p_vout->p_sys->i_col, p_vout->p_sys->i_row );
 429                 RemoveAllVout( p_vout );
 430                 return VLC_EGENERIC;
 431             }
 432             ADD_CALLBACKS(
 433                 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout,
 434                 SendEvents );
 435             p_vout->p_sys->i_vout++;
 436         }
 437     }
 438
 439     ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
 440
 441     ADD_PARENT_CALLBACKS( SendEventsToChild );
 442
 443     return VLC_SUCCESS;
 444 }
 445
 446 /*****************************************************************************
 447  * End: terminate Wall video thread output method
 448  *****************************************************************************/
 449 static void End( vout_thread_t *p_vout )
 450 {
 451     int i_index;
 452
 453     /* Free the fake output buffers we allocated */
 454     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 455     {
 456         i_index--;
 457         free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
 458     }
 459 }
 460
 461 /*****************************************************************************
 462  * Destroy: destroy Wall video thread output method
 463  *****************************************************************************
 464  * Terminate an output method created by WallCreateOutputMethod
 465  *****************************************************************************/
 466 static void Destroy( vlc_object_t *p_this )
 467 {
 468     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 469
 470     RemoveAllVout( p_vout );
 471
 472     DEL_PARENT_CALLBACKS( SendEventsToChild );
 473
 474     free( p_vout->p_sys->pp_vout );
 475     free( p_vout->p_sys );
 476 }
 477
 478 /*****************************************************************************
 479  * Render: displays previously rendered output
 480  *****************************************************************************
 481  * This function send the currently rendered image to Wall image, waits
 482  * until it is displayed and switch the two rendering buffers, preparing next
 483  * frame.
 484  *****************************************************************************/
 485 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
 486 {
 487     picture_t *p_outpic = NULL;
 488     int i_col, i_row, i_vout, i_plane;
 489     int pi_left_skip[VOUT_MAX_PLANES], pi_top_skip[VOUT_MAX_PLANES];
 490
 491     i_vout = 0;
 492
 493     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 494     {
 495         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 496         {
 497             for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 498             {
 499                 pi_left_skip[i_plane] = p_vout->p_sys->pp_vout[ i_vout ].i_left * p_pic->p[ i_plane ].i_pitch / p_vout->output.i_width;
 500                 pi_top_skip[i_plane] = (p_vout->p_sys->pp_vout[ i_vout ].i_top * p_pic->p[ i_plane ].i_lines / p_vout->output.i_height)*p_pic->p[i_plane].i_pitch;
 501             }
 502
 503             if( !p_vout->p_sys->pp_vout[ i_vout ].b_active )
 504             {
 505                 i_vout++;
 506                 continue;
 507             }
 508
 509             while( ( p_outpic =
 510                 vout_CreatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 511                                     0, 0, 0 )
 512                    ) == NULL )
 513             {
 514                 if( p_vout->b_die || p_vout->b_error )
 515                 {
 516                     vout_DestroyPicture(
 517                         p_vout->p_sys->pp_vout[ i_vout ].p_vout, p_outpic );
 518                     return;
 519                 }
 520
 521                 msleep( VOUT_OUTMEM_SLEEP );
 522             }
 523
 524             vout_DatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 525                               p_outpic, p_pic->date );
 526             vout_LinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 527                               p_outpic );
 528
 529             for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 530             {
 531                 uint8_t *p_in, *p_in_end, *p_out;
 532                 int i_in_pitch = p_pic->p[i_plane].i_pitch;
 533                 int i_out_pitch = p_outpic->p[i_plane].i_pitch;
 534                 int i_copy_pitch = p_outpic->p[i_plane].i_visible_pitch;
 535
 536                 p_in = p_pic->p[i_plane].p_pixels
 537                         + pi_top_skip[i_plane] + pi_left_skip[i_plane];
 538
 539                 p_in_end = p_in + p_outpic->p[i_plane].i_visible_lines
 540                                    * p_pic->p[i_plane].i_pitch;
 541
 542                 p_out = p_outpic->p[i_plane].p_pixels;
 543
 544                 while( p_in < p_in_end )
 545                 {
 546                     p_vout->p_libvlc->pf_memcpy( p_out, p_in, i_copy_pitch );
 547                     p_in += i_in_pitch;
 548                     p_out += i_out_pitch;
 549                 }
 550
 551 //                pi_left_skip[i_plane] += i_copy_pitch;
 552             }
 553
 554             vout_UnlinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 555                                 p_outpic );
 556             vout_DisplayPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 557                                  p_outpic );
 558
 559             i_vout++;
 560         }
 561
 562 /*         for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ ) */
 563 /*         { */
 564 /*             pi_top_skip[i_plane] += p_vout->p_sys->pp_vout[ i_vout ].i_height */
 565 /*                                      * p_pic->p[i_plane].i_visible_lines */
 566 /*                                      / p_vout->output.i_height */
 567 /*                                      * p_pic->p[i_plane].i_pitch; */
 568 /*         } */
 569     }
 570 }
 571
 572 /*****************************************************************************
 573  * RemoveAllVout: destroy all the child video output threads
 574  *****************************************************************************/
 575 static void RemoveAllVout( vout_thread_t *p_vout )
 576 {
 577     while( p_vout->p_sys->i_vout )
 578     {
 579          --p_vout->p_sys->i_vout;
 580          if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
 581          {
 582              DEL_CALLBACKS(
 583                  p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout,
 584                  SendEvents );
 585              vlc_object_detach(
 586                  p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
 587              vout_Destroy(
 588                  p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
 589          }
 590     }
 591 }
 592
 593 /*****************************************************************************
 594  * SendEvents: forward mouse and keyboard events to the parent p_vout
 595  *****************************************************************************/
 596 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
 597                        vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
 598 {
 599     vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
 600     int i_vout;
 601     vlc_value_t sentval = newval;
 602
 603     /* Find the video output index */
 604     for( i_vout = 0; i_vout < p_vout->p_sys->i_vout; i_vout++ )
 605     {
 606         if( p_this == (vlc_object_t *)p_vout->p_sys->pp_vout[ i_vout ].p_vout )
 607         {
 608             break;
 609         }
 610     }
 611
 612     if( i_vout == p_vout->p_sys->i_vout )
 613     {
 614         return VLC_EGENERIC;
 615     }
 616
 617     /* Translate the mouse coordinates */
 618     if( !strcmp( psz_var, "mouse-x" ) )
 619     {
 620         sentval.i_int += p_vout->output.i_width
 621                           * (i_vout % p_vout->p_sys->i_col)
 622                           / p_vout->p_sys->i_col;
 623     }
 624     else if( !strcmp( psz_var, "mouse-y" ) )
 625     {
 626         sentval.i_int += p_vout->output.i_height
 627                           * (i_vout / p_vout->p_sys->i_row)
 628                           / p_vout->p_sys->i_row;
 629     }
 630
 631     var_Set( p_vout, psz_var, sentval );
 632
 633     return VLC_SUCCESS;
 634 }
 635
 636 /*****************************************************************************
 637  * SendEventsToChild: forward events to the child/children vout
 638  *****************************************************************************/
 639 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
 640                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 641 {
 642     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 643     int i_row, i_col, i_vout = 0;
 644
 645     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 646     {
 647         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 648         {
 649             var_Set( p_vout->p_sys->pp_vout[ i_vout ].p_vout, psz_var, newval);
 650             if( !strcmp( psz_var, "fullscreen" ) ) break;
 651             i_vout++;
 652         }
 653     }
 654
 655     return VLC_SUCCESS;
 656 }