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 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc/vlc.h>
  33 #include <vlc_vout.h>
  34
  35 #include "filter_common.h"
  36
  37 /*****************************************************************************
  38  * Local prototypes
  39  *****************************************************************************/
  40 static int  Create    ( vlc_object_t * );
  41 static void Destroy   ( vlc_object_t * );
  42
  43 static int  Init      ( vout_thread_t * );
  44 static void End       ( vout_thread_t * );
  45 static void Render    ( vout_thread_t *, picture_t * );
  46
  47 static void RemoveAllVout  ( vout_thread_t *p_vout );
  48
  49 static int  SendEvents( vlc_object_t *, char const *,
  50                         vlc_value_t, vlc_value_t, void * );
  51
  52 /*****************************************************************************
  53  * Module descriptor
  54  *****************************************************************************/
  55 #define COLS_TEXT N_("Number of columns")
  56 #define COLS_LONGTEXT N_("Number of horizontal windows in " \
  57     "which to split the video.")
  58
  59 #define ROWS_TEXT N_("Number of rows")
  60 #define ROWS_LONGTEXT N_("Number of vertical windows in " \
  61     "which to split the video.")
  62
  63 #define ACTIVE_TEXT N_("Active windows")
  64 #define ACTIVE_LONGTEXT N_("Comma-separated list of active windows, " \
  65     "defaults to all")
  66
  67 #define ASPECT_TEXT N_("Element aspect ratio")
  68 #define ASPECT_LONGTEXT N_("Aspect ratio of the individual displays " \
  69    "building the wall.")
  70
  71 #define CFG_PREFIX "wall-"
  72
  73 vlc_module_begin();
  74     set_description( _("Wall video filter") );
  75     set_shortname( _("Image wall" ));
  76     set_capability( "video filter", 0 );
  77     set_category( CAT_VIDEO );
  78     set_subcategory( SUBCAT_VIDEO_VFILTER );
  79
  80     add_integer( CFG_PREFIX "cols", 3, NULL, COLS_TEXT, COLS_LONGTEXT, false );
  81     add_integer( CFG_PREFIX "rows", 3, NULL, ROWS_TEXT, ROWS_LONGTEXT, false );
  82     add_string( CFG_PREFIX "active", NULL, NULL, ACTIVE_TEXT, ACTIVE_LONGTEXT,
  83                  true );
  84     add_string( CFG_PREFIX "element-aspect", "4:3", NULL, ASPECT_TEXT, ASPECT_LONGTEXT, false );
  85
  86     add_shortcut( "wall" );
  87     set_callbacks( Create, Destroy );
  88 vlc_module_end();
  89
  90 static const char *ppsz_filter_options[] = {
  91     "cols", "rows", "active", "element-aspect", NULL
  92 };
  93
  94 /*****************************************************************************
  95  * vout_sys_t: Wall video output method descriptor
  96  *****************************************************************************
  97  * This structure is part of the video output thread descriptor.
  98  * It describes the Wall specific properties of an output thread.
  99  *****************************************************************************/
 100 struct vout_sys_t
 101 {
 102     int    i_col;
 103     int    i_row;
 104     int    i_vout;
 105     struct vout_list_t
 106     {
 107         bool b_active;
 108         int i_width;
 109         int i_height;
 110         int i_left;
 111         int i_top;
 112         vout_thread_t *p_vout;
 113     } *pp_vout;
 114 };
 115
 116 /*****************************************************************************
 117  * Control: control facility for the vout (forwards to child vout)
 118  *****************************************************************************/
 119 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 120 {
 121     int i_row, i_col, i_vout = 0;
 122
 123     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 124     {
 125         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 126         {
 127             vout_vaControl( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 128                             i_query, args );
 129             i_vout++;
 130         }
 131     }
 132     return VLC_SUCCESS;
 133 }
 134
 135 /*****************************************************************************
 136  * Create: allocates Wall video thread output method
 137  *****************************************************************************
 138  * This function allocates and initializes a Wall vout method.
 139  *****************************************************************************/
 140 static int Create( vlc_object_t *p_this )
 141 {
 142     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 143     char *psz_method, *psz_tmp, *psz_method_tmp;
 144     int i_vout;
 145
 146     /* Allocate structure */
 147     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 148     if( p_vout->p_sys == NULL )
 149     {
 150         msg_Err( p_vout, "out of memory" );
 151         return VLC_ENOMEM;
 152     }
 153
 154     p_vout->pf_init = Init;
 155     p_vout->pf_end = End;
 156     p_vout->pf_manage = NULL;
 157     p_vout->pf_render = Render;
 158     p_vout->pf_display = NULL;
 159     p_vout->pf_control = Control;
 160
 161     config_ChainParse( p_vout, CFG_PREFIX, ppsz_filter_options,
 162                        p_vout->p_cfg );
 163
 164     /* Look what method was requested */
 165     p_vout->p_sys->i_col = var_CreateGetInteger( p_vout, CFG_PREFIX "cols" );
 166     p_vout->p_sys->i_row = var_CreateGetInteger( p_vout, CFG_PREFIX "rows" );
 167
 168     p_vout->p_sys->i_col = __MAX( 1, __MIN( 15, p_vout->p_sys->i_col ) );
 169     p_vout->p_sys->i_row = __MAX( 1, __MIN( 15, p_vout->p_sys->i_row ) );
 170
 171     msg_Dbg( p_vout, "opening a %i x %i wall",
 172              p_vout->p_sys->i_col, p_vout->p_sys->i_row );
 173
 174     p_vout->p_sys->pp_vout = malloc( p_vout->p_sys->i_row *
 175                                      p_vout->p_sys->i_col *
 176                                      sizeof(struct vout_list_t) );
 177     if( p_vout->p_sys->pp_vout == NULL )
 178     {
 179         msg_Err( p_vout, "out of memory" );
 180         free( p_vout->p_sys );
 181         return VLC_ENOMEM;
 182     }
 183
 184     psz_method_tmp =
 185     psz_method = var_CreateGetNonEmptyString( p_vout, CFG_PREFIX "active" );
 186
 187     /* If no trailing vout are specified, take them all */
 188     if( psz_method == NULL )
 189     {
 190         for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
 191              i_vout--; )
 192         {
 193             p_vout->p_sys->pp_vout[i_vout].b_active = 1;
 194         }
 195     }
 196     /* If trailing vout are specified, activate only the requested ones */
 197     else
 198     {
 199         for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
 200              i_vout--; )
 201         {
 202             p_vout->p_sys->pp_vout[i_vout].b_active = 0;
 203         }
 204
 205         while( *psz_method )
 206         {
 207             psz_tmp = psz_method;
 208             while( *psz_tmp && *psz_tmp != ',' )
 209             {
 210                 psz_tmp++;
 211             }
 212
 213             if( *psz_tmp )
 214             {
 215                 *psz_tmp = '\0';
 216                 i_vout = atoi( psz_method );
 217                 psz_method = psz_tmp + 1;
 218             }
 219             else
 220             {
 221                 i_vout = atoi( psz_method );
 222                 psz_method = psz_tmp;
 223             }
 224
 225             if( i_vout >= 0 &&
 226                 i_vout < p_vout->p_sys->i_row * p_vout->p_sys->i_col )
 227             {
 228                 p_vout->p_sys->pp_vout[i_vout].b_active = 1;
 229             }
 230         }
 231     }
 232
 233     free( psz_method_tmp );
 234
 235     return VLC_SUCCESS;
 236 }
 237
 238 /*****************************************************************************
 239  * Init: initialize Wall video thread output method
 240  *****************************************************************************/
 241 static int Init( vout_thread_t *p_vout )
 242 {
 243     int i_index, i_row, i_col, i_width, i_height, i_left, i_top;
 244     unsigned int i_target_width,i_target_height;
 245     picture_t *p_pic;
 246     video_format_t fmt;
 247     int i_aspect = 4*VOUT_ASPECT_FACTOR/3;
 248     int i_align = 0;
 249     unsigned int i_hstart, i_hend, i_vstart, i_vend;
 250     unsigned int w1,h1,w2,h2;
 251     int i_xpos, i_ypos;
 252     int i_vstart_rounded = 0, i_hstart_rounded = 0;
 253     char *psz_aspect;
 254
 255     memset( &fmt, 0, sizeof(video_format_t) );
 256
 257     psz_aspect = var_CreateGetNonEmptyString( p_vout,
 258                                               CFG_PREFIX "element-aspect" );
 259     if( psz_aspect && *psz_aspect )
 260     {
 261         char *psz_parser = strchr( psz_aspect, ':' );
 262         if( psz_parser )
 263         {
 264             *psz_parser++ = '\0';
 265             i_aspect = atoi( psz_aspect ) * VOUT_ASPECT_FACTOR
 266                 / atoi( psz_parser );
 267         }
 268         else
 269         {
 270             msg_Warn( p_vout, "invalid aspect ratio specification" );
 271         }
 272         free( psz_aspect );
 273     }
 274
 275     i_xpos = var_CreateGetInteger( p_vout, "video-x" );
 276     i_ypos = var_CreateGetInteger( p_vout, "video-y" );
 277     if( i_xpos < 0 ) i_xpos = 0;
 278     if( i_ypos < 0 ) i_ypos = 0;
 279
 280     I_OUTPUTPICTURES = 0;
 281
 282     /* Initialize the output structure */
 283     p_vout->output.i_chroma = p_vout->render.i_chroma;
 284     p_vout->output.i_width  = p_vout->render.i_width;
 285     p_vout->output.i_height = p_vout->render.i_height;
 286     p_vout->output.i_aspect = p_vout->render.i_aspect;
 287     var_Create( p_vout, "align", VLC_VAR_INTEGER );
 288
 289     fmt.i_width = fmt.i_visible_width = p_vout->render.i_width;
 290     fmt.i_height = fmt.i_visible_height = p_vout->render.i_height;
 291     fmt.i_x_offset = fmt.i_y_offset = 0;
 292     fmt.i_chroma = p_vout->render.i_chroma;
 293     fmt.i_aspect = p_vout->render.i_aspect;
 294     fmt.i_sar_num = p_vout->render.i_aspect * fmt.i_height / fmt.i_width;
 295     fmt.i_sar_den = VOUT_ASPECT_FACTOR;
 296
 297     w1 = p_vout->output.i_width / p_vout->p_sys->i_col;
 298     w1 &= ~1;
 299     h1 = w1 * VOUT_ASPECT_FACTOR / i_aspect&~1;
 300     h1 &= ~1;
 301
 302     h2 = p_vout->output.i_height / p_vout->p_sys->i_row&~1;
 303     h2 &= ~1;
 304     w2 = h2 * i_aspect / VOUT_ASPECT_FACTOR&~1;
 305     w2 &= ~1;
 306
 307     if ( h1 * p_vout->p_sys->i_row < p_vout->output.i_height )
 308     {
 309         unsigned int i_tmp;
 310         i_target_width = w2;
 311         i_target_height = h2;
 312         i_vstart = 0;
 313         i_vend = p_vout->output.i_height;
 314         i_tmp = i_target_width * p_vout->p_sys->i_col;
 315         while( i_tmp < p_vout->output.i_width ) i_tmp += p_vout->p_sys->i_col;
 316         i_hstart = (( i_tmp - p_vout->output.i_width ) / 2)&~1;
 317         i_hstart_rounded  = ( ( i_tmp - p_vout->output.i_width ) % 2 ) ||
 318             ( ( ( i_tmp - p_vout->output.i_width ) / 2 ) & 1 );
 319         i_hend = i_hstart + p_vout->output.i_width;
 320     }
 321     else
 322     {
 323         unsigned int i_tmp;
 324         i_target_height = h1;
 325         i_target_width = w1;
 326         i_hstart = 0;
 327         i_hend = p_vout->output.i_width;
 328         i_tmp = i_target_height * p_vout->p_sys->i_row;
 329         while( i_tmp < p_vout->output.i_height ) i_tmp += p_vout->p_sys->i_row;
 330         i_vstart = ( ( i_tmp - p_vout->output.i_height ) / 2 ) & ~1;
 331         i_vstart_rounded  = ( ( i_tmp - p_vout->output.i_height ) % 2 ) ||
 332             ( ( ( i_tmp - p_vout->output.i_height ) / 2 ) & 1 );
 333         i_vend = i_vstart + p_vout->output.i_height;
 334     }
 335     msg_Dbg( p_vout, "target resolution %dx%d", i_target_width, i_target_height );
 336
 337     /* Try to open the real video output */
 338     msg_Dbg( p_vout, "spawning the real video outputs" );
 339
 340     p_vout->p_sys->i_vout = 0;
 341     msg_Dbg( p_vout, "target window (%d,%d)-(%d,%d)", i_hstart,i_vstart,i_hend,i_vend );
 342
 343
 344     i_top = 0;
 345     i_height = 0;
 346     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 347     {
 348         i_left = 0;
 349         i_top += i_height;
 350         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 351         {
 352             i_align = 0;
 353
 354             if( i_col*i_target_width >= i_hstart &&
 355                 (i_col+1)*i_target_width <= i_hend )
 356             {
 357                 i_width = i_target_width;
 358             }
 359             else if( ( i_col + 1 ) * i_target_width < i_hstart ||
 360                      ( i_col * i_target_width ) > i_hend )
 361             {
 362                 i_width = 0;
 363             }
 364             else
 365             {
 366                 i_width = ( i_target_width - i_hstart % i_target_width );
 367                 if( i_col >= ( p_vout->p_sys->i_col / 2 ) )
 368                 {
 369                     i_align |= VOUT_ALIGN_LEFT;
 370                     i_width -= i_hstart_rounded ? 2: 0;
 371                 }
 372                 else
 373                 {
 374                     i_align |= VOUT_ALIGN_RIGHT;
 375                 }
 376             }
 377
 378             if( i_row * i_target_height >= i_vstart &&
 379                 ( i_row + 1 ) * i_target_height <= i_vend )
 380             {
 381                 i_height = i_target_height;
 382             }
 383             else if( ( i_row + 1 ) * i_target_height < i_vstart ||
 384                      ( i_row * i_target_height ) > i_vend )
 385             {
 386                 i_height = 0;
 387             }
 388             else
 389             {
 390                 i_height = ( i_target_height -
 391                              i_vstart%i_target_height );
 392                 if(  i_row >= ( p_vout->p_sys->i_row / 2 ) )
 393                 {
 394                     i_align |= VOUT_ALIGN_TOP;
 395                     i_height -= i_vstart_rounded ? 2: 0;
 396                 }
 397                 else
 398                 {
 399                     i_align |= VOUT_ALIGN_BOTTOM;
 400                 }
 401             }
 402             if( i_height == 0 || i_width == 0 )
 403             {
 404                 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active = false;
 405             }
 406
 407             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_width = i_width;
 408             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_height = i_height;
 409             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_left = i_left;
 410             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_top = i_top;
 411             i_left += i_width;
 412
 413             if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
 414             {
 415                 p_vout->p_sys->i_vout++;
 416                 continue;
 417             }
 418             var_SetInteger( p_vout, "align", i_align );
 419             var_SetInteger( p_vout, "video-x", i_left + i_xpos - i_width);
 420             var_SetInteger( p_vout, "video-y", i_top + i_ypos );
 421
 422             fmt.i_width = fmt.i_visible_width = i_width;
 423             fmt.i_height = fmt.i_visible_height = i_height;
 424             fmt.i_aspect = i_aspect * i_target_height / i_height *
 425                 i_width / i_target_width;
 426
 427             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout =
 428                 vout_Create( p_vout, &fmt );
 429             if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout )
 430             {
 431                 msg_Err( p_vout, "failed to get %ix%i vout threads",
 432                                  p_vout->p_sys->i_col, p_vout->p_sys->i_row );
 433                 RemoveAllVout( p_vout );
 434                 return VLC_EGENERIC;
 435             }
 436             ADD_CALLBACKS(
 437                 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout,
 438                 SendEvents );
 439             p_vout->p_sys->i_vout++;
 440         }
 441     }
 442
 443     ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
 444
 445     ADD_PARENT_CALLBACKS( SendEventsToChild );
 446
 447     return VLC_SUCCESS;
 448 }
 449
 450 /*****************************************************************************
 451  * End: terminate Wall video thread output method
 452  *****************************************************************************/
 453 static void End( vout_thread_t *p_vout )
 454 {
 455     int i_index;
 456
 457     /* Free the fake output buffers we allocated */
 458     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 459     {
 460         i_index--;
 461         free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
 462     }
 463 }
 464
 465 /*****************************************************************************
 466  * Destroy: destroy Wall video thread output method
 467  *****************************************************************************
 468  * Terminate an output method created by WallCreateOutputMethod
 469  *****************************************************************************/
 470 static void Destroy( vlc_object_t *p_this )
 471 {
 472     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 473
 474     RemoveAllVout( p_vout );
 475
 476     DEL_PARENT_CALLBACKS( SendEventsToChild );
 477
 478     free( p_vout->p_sys->pp_vout );
 479     free( p_vout->p_sys );
 480 }
 481
 482 /*****************************************************************************
 483  * Render: displays previously rendered output
 484  *****************************************************************************
 485  * This function send the currently rendered image to Wall image, waits
 486  * until it is displayed and switch the two rendering buffers, preparing next
 487  * frame.
 488  *****************************************************************************/
 489 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
 490 {
 491     picture_t *p_outpic = NULL;
 492     int i_col, i_row, i_vout, i_plane;
 493     int pi_left_skip[VOUT_MAX_PLANES], pi_top_skip[VOUT_MAX_PLANES];
 494
 495     i_vout = 0;
 496
 497     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 498     {
 499         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 500         {
 501             for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 502             {
 503                 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;
 504                 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;
 505             }
 506
 507             if( !p_vout->p_sys->pp_vout[ i_vout ].b_active )
 508             {
 509                 i_vout++;
 510                 continue;
 511             }
 512
 513             while( ( p_outpic =
 514                 vout_CreatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 515                                     0, 0, 0 )
 516                    ) == NULL )
 517             {
 518                 if( p_vout->b_die || p_vout->b_error )
 519                 {
 520                     vout_DestroyPicture(
 521                         p_vout->p_sys->pp_vout[ i_vout ].p_vout, p_outpic );
 522                     return;
 523                 }
 524
 525                 msleep( VOUT_OUTMEM_SLEEP );
 526             }
 527
 528             vout_DatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 529                               p_outpic, p_pic->date );
 530             vout_LinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 531                               p_outpic );
 532
 533             for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 534             {
 535                 uint8_t *p_in, *p_in_end, *p_out;
 536                 int i_in_pitch = p_pic->p[i_plane].i_pitch;
 537                 int i_out_pitch = p_outpic->p[i_plane].i_pitch;
 538                 int i_copy_pitch = p_outpic->p[i_plane].i_visible_pitch;
 539
 540                 p_in = p_pic->p[i_plane].p_pixels
 541                         + pi_top_skip[i_plane] + pi_left_skip[i_plane];
 542
 543                 p_in_end = p_in + p_outpic->p[i_plane].i_visible_lines
 544                                    * p_pic->p[i_plane].i_pitch;
 545
 546                 p_out = p_outpic->p[i_plane].p_pixels;
 547
 548                 while( p_in < p_in_end )
 549                 {
 550                     p_vout->p_libvlc->pf_memcpy( p_out, p_in, i_copy_pitch );
 551                     p_in += i_in_pitch;
 552                     p_out += i_out_pitch;
 553                 }
 554
 555 //                pi_left_skip[i_plane] += i_copy_pitch;
 556             }
 557
 558             vout_UnlinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 559                                 p_outpic );
 560             vout_DisplayPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 561                                  p_outpic );
 562
 563             i_vout++;
 564         }
 565
 566 /*         for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ ) */
 567 /*         { */
 568 /*             pi_top_skip[i_plane] += p_vout->p_sys->pp_vout[ i_vout ].i_height */
 569 /*                                      * p_pic->p[i_plane].i_visible_lines */
 570 /*                                      / p_vout->output.i_height */
 571 /*                                      * p_pic->p[i_plane].i_pitch; */
 572 /*         } */
 573     }
 574 }
 575
 576 /*****************************************************************************
 577  * RemoveAllVout: destroy all the child video output threads
 578  *****************************************************************************/
 579 static void RemoveAllVout( vout_thread_t *p_vout )
 580 {
 581     while( p_vout->p_sys->i_vout )
 582     {
 583          --p_vout->p_sys->i_vout;
 584          if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
 585          {
 586              DEL_CALLBACKS(
 587                  p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout,
 588                  SendEvents );
 589              vlc_object_detach(
 590                  p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
 591              vout_Destroy(
 592                  p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
 593          }
 594     }
 595 }
 596
 597 /*****************************************************************************
 598  * SendEvents: forward mouse and keyboard events to the parent p_vout
 599  *****************************************************************************/
 600 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
 601                        vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
 602 {
 603     VLC_UNUSED(oldval);
 604     vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
 605     int i_vout;
 606     vlc_value_t sentval = newval;
 607
 608     /* Find the video output index */
 609     for( i_vout = 0; i_vout < p_vout->p_sys->i_vout; i_vout++ )
 610     {
 611         if( p_this == (vlc_object_t *)p_vout->p_sys->pp_vout[ i_vout ].p_vout )
 612         {
 613             break;
 614         }
 615     }
 616
 617     if( i_vout == p_vout->p_sys->i_vout )
 618     {
 619         return VLC_EGENERIC;
 620     }
 621
 622     /* Translate the mouse coordinates */
 623     if( !strcmp( psz_var, "mouse-x" ) )
 624     {
 625         sentval.i_int += p_vout->output.i_width
 626                           * (i_vout % p_vout->p_sys->i_col)
 627                           / p_vout->p_sys->i_col;
 628     }
 629     else if( !strcmp( psz_var, "mouse-y" ) )
 630     {
 631         sentval.i_int += p_vout->output.i_height
 632                           * (i_vout / p_vout->p_sys->i_row)
 633                           / p_vout->p_sys->i_row;
 634     }
 635
 636     var_Set( p_vout, psz_var, sentval );
 637
 638     return VLC_SUCCESS;
 639 }
 640
 641 /*****************************************************************************
 642  * SendEventsToChild: forward events to the child/children vout
 643  *****************************************************************************/
 644 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
 645                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 646 {
 647     VLC_UNUSED(p_data); VLC_UNUSED(oldval);
 648     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 649     int i_row, i_col, i_vout = 0;
 650
 651     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 652     {
 653         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 654         {
 655             var_Set( p_vout->p_sys->pp_vout[ i_vout ].p_vout, psz_var, newval);
 656             if( !strcmp( psz_var, "fullscreen" ) ) break;
 657             i_vout++;
 658         }
 659     }
 660
 661     return VLC_SUCCESS;
 662 }