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 VideoLAN
   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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdlib.h>                                      /* malloc(), free() */
  28 #include <string.h>
  29
  30 #include <vlc/vlc.h>
  31 #include <vlc/vout.h>
  32
  33 #include "filter_common.h"
  34
  35 /*****************************************************************************
  36  * Local prototypes
  37  *****************************************************************************/
  38 static int  Create    ( vlc_object_t * );
  39 static void Destroy   ( vlc_object_t * );
  40
  41 static int  Init      ( vout_thread_t * );
  42 static void End       ( vout_thread_t * );
  43 static void Render    ( vout_thread_t *, picture_t * );
  44
  45 static void RemoveAllVout  ( vout_thread_t *p_vout );
  46
  47 static int  SendEvents( vlc_object_t *, char const *,
  48                         vlc_value_t, vlc_value_t, void * );
  49
  50 /*****************************************************************************
  51  * Module descriptor
  52  *****************************************************************************/
  53 #define COLS_TEXT N_("Number of columns")
  54 #define COLS_LONGTEXT N_("Select the number of horizontal video windows in " \
  55     "which to split the video.")
  56
  57 #define ROWS_TEXT N_("Number of rows")
  58 #define ROWS_LONGTEXT N_("Select the number of vertical video windows in " \
  59     "which to split the video.")
  60
  61 #define ACTIVE_TEXT N_("Active windows")
  62 #define ACTIVE_LONGTEXT N_("Comma separated list of active windows, " \
  63     "defaults to all")
  64
  65 #define ASPECT_TEXT N_("Element aspect ratio")
  66 #define ASPECT_LONGTEXT N_("The aspect ratio of the individual displays building the display wall")
  67
  68 vlc_module_begin();
  69     set_description( _("Wall video filter") );
  70     set_shortname( N_("Image wall" ));
  71     set_capability( "video filter", 0 );
  72     set_category( CAT_VIDEO );
  73     set_subcategory( SUBCAT_VIDEO_VFILTER );
  74
  75     add_integer( "wall-cols", 3, NULL, COLS_TEXT, COLS_LONGTEXT, VLC_FALSE );
  76     add_integer( "wall-rows", 3, NULL, ROWS_TEXT, ROWS_LONGTEXT, VLC_FALSE );
  77     add_string( "wall-active", NULL, NULL, ACTIVE_TEXT, ACTIVE_LONGTEXT, VLC_FALSE );
  78     add_string( "wall-element-aspect", "4:3", NULL, ASPECT_TEXT, ASPECT_LONGTEXT, VLC_FALSE );
  79
  80     add_shortcut( "wall" );
  81     set_callbacks( Create, Destroy );
  82 vlc_module_end();
  83
  84 /*****************************************************************************
  85  * vout_sys_t: Wall video output method descriptor
  86  *****************************************************************************
  87  * This structure is part of the video output thread descriptor.
  88  * It describes the Wall specific properties of an output thread.
  89  *****************************************************************************/
  90 struct vout_sys_t
  91 {
  92     int    i_col;
  93     int    i_row;
  94     int    i_vout;
  95     struct vout_list_t
  96     {
  97         vlc_bool_t b_active;
  98         int i_width;
  99         int i_height;
 100         int i_left;
 101         int i_top;
 102         vout_thread_t *p_vout;
 103     } *pp_vout;
 104 };
 105
 106 /*****************************************************************************
 107  * Control: control facility for the vout (forwards to child vout)
 108  *****************************************************************************/
 109 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 110 {
 111     int i_row, i_col, i_vout = 0;
 112
 113     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 114     {
 115         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 116         {
 117             vout_vaControl( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 118                             i_query, args );
 119             i_vout++;
 120         }
 121     }
 122     return VLC_SUCCESS;
 123 }
 124
 125 /*****************************************************************************
 126  * Create: allocates Wall video thread output method
 127  *****************************************************************************
 128  * This function allocates and initializes a Wall vout method.
 129  *****************************************************************************/
 130 static int Create( vlc_object_t *p_this )
 131 {
 132     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 133     char *psz_method, *psz_tmp, *psz_method_tmp;
 134     int i_vout;
 135
 136     /* Allocate structure */
 137     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 138     if( p_vout->p_sys == NULL )
 139     {
 140         msg_Err( p_vout, "out of memory" );
 141         return VLC_ENOMEM;
 142     }
 143
 144     p_vout->pf_init = Init;
 145     p_vout->pf_end = End;
 146     p_vout->pf_manage = NULL;
 147     p_vout->pf_render = Render;
 148     p_vout->pf_display = NULL;
 149     p_vout->pf_control = Control;
 150
 151     /* Look what method was requested */
 152     p_vout->p_sys->i_col = config_GetInt( p_vout, "wall-cols" );
 153     p_vout->p_sys->i_row = config_GetInt( p_vout, "wall-rows" );
 154
 155     p_vout->p_sys->i_col = __MAX( 1, __MIN( 15, p_vout->p_sys->i_col ) );
 156     p_vout->p_sys->i_row = __MAX( 1, __MIN( 15, p_vout->p_sys->i_row ) );
 157
 158     msg_Dbg( p_vout, "opening a %i x %i wall",
 159              p_vout->p_sys->i_col, p_vout->p_sys->i_row );
 160
 161     p_vout->p_sys->pp_vout = malloc( p_vout->p_sys->i_row *
 162                                      p_vout->p_sys->i_col *
 163                                      sizeof(struct vout_list_t) );
 164     if( p_vout->p_sys->pp_vout == NULL )
 165     {
 166         msg_Err( p_vout, "out of memory" );
 167         free( p_vout->p_sys );
 168         return VLC_ENOMEM;
 169     }
 170
 171     psz_method_tmp = psz_method = config_GetPsz( p_vout, "wall-active" );
 172
 173     /* If no trailing vout are specified, take them all */
 174     if( psz_method == NULL )
 175     {
 176         for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
 177              i_vout--; )
 178         {
 179             p_vout->p_sys->pp_vout[i_vout].b_active = 1;
 180         }
 181     }
 182     /* If trailing vout are specified, activate only the requested ones */
 183     else
 184     {
 185         for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
 186              i_vout--; )
 187         {
 188             p_vout->p_sys->pp_vout[i_vout].b_active = 0;
 189         }
 190
 191         while( *psz_method )
 192         {
 193             psz_tmp = psz_method;
 194             while( *psz_tmp && *psz_tmp != ',' )
 195             {
 196                 psz_tmp++;
 197             }
 198
 199             if( *psz_tmp )
 200             {
 201                 *psz_tmp = '\0';
 202                 i_vout = atoi( psz_method );
 203                 psz_method = psz_tmp + 1;
 204             }
 205             else
 206             {
 207                 i_vout = atoi( psz_method );
 208                 psz_method = psz_tmp;
 209             }
 210
 211             if( i_vout >= 0 &&
 212                 i_vout < p_vout->p_sys->i_row * p_vout->p_sys->i_col )
 213             {
 214                 p_vout->p_sys->pp_vout[i_vout].b_active = 1;
 215             }
 216         }
 217     }
 218
 219     free( psz_method_tmp );
 220
 221     return VLC_SUCCESS;
 222 }
 223
 224 /*****************************************************************************
 225  * Init: initialize Wall video thread output method
 226  *****************************************************************************/
 227 static int Init( vout_thread_t *p_vout )
 228 {
 229     int i_index, i_row, i_col, i_width, i_height, i_left, i_top;
 230     unsigned int i_target_width,i_target_height;
 231     picture_t *p_pic;
 232     int i_aspect = 4*VOUT_ASPECT_FACTOR/3;
 233     int i_align = 0;
 234     unsigned int i_hstart, i_hend, i_vstart, i_vend;
 235     unsigned int w1,h1,w2,h2;
 236     int i_xpos, i_ypos;
 237     int i_vstart_rounded = 0, i_hstart_rounded = 0;
 238     char *psz_aspect;
 239
 240     psz_aspect = config_GetPsz( p_vout, "wall-element-aspect" );
 241     if( psz_aspect && *psz_aspect )
 242     {
 243         char *psz_parser = strchr( psz_aspect, ':' );
 244         if( psz_parser )
 245         {
 246             *psz_parser++ = '\0';
 247             i_aspect = atoi( psz_aspect ) * VOUT_ASPECT_FACTOR
 248                 / atoi( psz_parser );
 249         }
 250         else
 251         {
 252             msg_Warn( p_vout, "invalid aspect ratio specification" );
 253         }
 254         free( psz_aspect );
 255     }
 256
 257
 258     i_xpos = var_CreateGetInteger( p_vout, "video-x" );
 259     i_ypos = var_CreateGetInteger( p_vout, "video-y" );
 260     if( i_xpos < 0 ) i_xpos = 0;
 261     if( i_ypos < 0 ) i_ypos = 0;
 262
 263     I_OUTPUTPICTURES = 0;
 264
 265     /* Initialize the output structure */
 266     p_vout->output.i_chroma = p_vout->render.i_chroma;
 267     p_vout->output.i_width  = p_vout->render.i_width;
 268     p_vout->output.i_height = p_vout->render.i_height;
 269     p_vout->output.i_aspect = p_vout->render.i_aspect;
 270     var_Create( p_vout, "align", VLC_VAR_INTEGER );
 271
 272     w1 = p_vout->output.i_width / p_vout->p_sys->i_col;
 273     w1 &= ~1;
 274     h1 = w1 * VOUT_ASPECT_FACTOR / i_aspect&~1;
 275     h1 &= ~1;
 276
 277     h2 = p_vout->output.i_height / p_vout->p_sys->i_row&~1;
 278     h2 &= ~1;
 279     w2 = h2 * i_aspect / VOUT_ASPECT_FACTOR&~1;
 280     w2 &= ~1;
 281
 282     if ( h1 * p_vout->p_sys->i_row < p_vout->output.i_height )
 283     {
 284         unsigned int i_tmp;
 285         i_target_width = w2;
 286         i_target_height = h2;
 287         i_vstart = 0;
 288         i_vend = p_vout->output.i_height;
 289         i_tmp = i_target_width * p_vout->p_sys->i_col;
 290         while( i_tmp < p_vout->output.i_width ) i_tmp += p_vout->p_sys->i_col;
 291         i_hstart = (( i_tmp - p_vout->output.i_width ) / 2)&~1;
 292         i_hstart_rounded  = ( ( i_tmp - p_vout->output.i_width ) % 2 ) ||
 293             ( ( ( i_tmp - p_vout->output.i_width ) / 2 ) & 1 );
 294         i_hend = i_hstart + p_vout->output.i_width;
 295     }
 296     else
 297     {
 298         unsigned int i_tmp;
 299         i_target_height = h1;
 300         i_target_width = w1;
 301         i_hstart = 0;
 302         i_hend = p_vout->output.i_width;
 303         i_tmp = i_target_height * p_vout->p_sys->i_row;
 304         while( i_tmp < p_vout->output.i_height ) i_tmp += p_vout->p_sys->i_row;
 305         i_vstart = ( ( i_tmp - p_vout->output.i_height ) / 2 ) & ~1;
 306         i_vstart_rounded  = ( ( i_tmp - p_vout->output.i_height ) % 2 ) ||
 307             ( ( ( i_tmp - p_vout->output.i_height ) / 2 ) & 1 );
 308         i_vend = i_vstart + p_vout->output.i_height;
 309     }
 310     msg_Dbg( p_vout, "target resolution %dx%d", i_target_width, i_target_height );
 311
 312     /* Try to open the real video output */
 313     msg_Dbg( p_vout, "spawning the real video outputs" );
 314
 315     p_vout->p_sys->i_vout = 0;
 316     msg_Dbg( p_vout, "target window (%d,%d)-(%d,%d)", i_hstart,i_vstart,i_hend,i_vend );
 317
 318
 319     i_top = 0;
 320     i_height = 0;
 321     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 322     {
 323         i_left = 0;
 324         i_top += i_height;
 325         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 326         {
 327             i_align = 0;
 328
 329             if( i_col*i_target_width >= i_hstart &&
 330                 (i_col+1)*i_target_width <= i_hend )
 331             {
 332                 i_width = i_target_width;
 333             }
 334             else if( ( i_col + 1 ) * i_target_width < i_hstart ||
 335                      ( i_col * i_target_width ) > i_hend )
 336             {
 337                 i_width = 0;
 338             }
 339             else
 340             {
 341                 i_width = ( i_target_width - i_hstart % i_target_width );
 342                 if( i_col > ( p_vout->p_sys->i_col / 2 ) )
 343                 {
 344                     i_align |= VOUT_ALIGN_LEFT;
 345                     i_width -= i_hstart_rounded ? 2: 0;
 346                 }
 347                 else
 348                 {
 349                     i_align |= VOUT_ALIGN_RIGHT;
 350                 }
 351             }
 352
 353             if( i_row * i_target_height >= i_vstart &&
 354                 ( i_row + 1 ) * i_target_height <= i_vend )
 355             {
 356                 i_height = i_target_height;
 357             }
 358             else if( ( i_row + 1 ) * i_target_height < i_vstart ||
 359                      ( i_row * i_target_height ) > i_vend )
 360             {
 361                 i_height = 0;
 362             }
 363             else
 364             {
 365                 i_height = ( i_target_height -
 366                              i_vstart%i_target_height );
 367                 if(  i_row > ( p_vout->p_sys->i_row / 2 ) )
 368                 {
 369                     i_align |= VOUT_ALIGN_TOP;
 370                     i_height -= i_vstart_rounded ? 2: 0;
 371                 }
 372                 else
 373                 {
 374                     i_align |= VOUT_ALIGN_BOTTOM;
 375                 }
 376             }
 377             if( i_height == 0 || i_width == 0 )
 378             {
 379                 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active = VLC_FALSE;
 380             }
 381
 382             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_width = i_width;
 383             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_height = i_height;
 384             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_left = i_left;
 385             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_top = i_top;
 386             i_left += i_width;
 387
 388             if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
 389             {
 390                 p_vout->p_sys->i_vout++;
 391                 continue;
 392             }
 393             var_SetInteger( p_vout, "align", i_align );
 394             var_SetInteger( p_vout, "video-x", i_left + i_xpos - i_width);
 395             var_SetInteger( p_vout, "video-y", i_top + i_ypos );
 396
 397             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout =
 398                 vout_Create( p_vout, i_width, i_height,
 399                              p_vout->render.i_chroma,
 400                              i_aspect * i_target_height / i_height *
 401                              i_width / i_target_width );
 402             if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout == NULL )
 403             {
 404                 msg_Err( p_vout, "failed to get %ix%i vout threads",
 405                                  p_vout->p_sys->i_col, p_vout->p_sys->i_row );
 406                 RemoveAllVout( p_vout );
 407                 return VLC_EGENERIC;
 408             }
 409             ADD_CALLBACKS(
 410                 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout,
 411                 SendEvents );
 412             p_vout->p_sys->i_vout++;
 413         }
 414     }
 415
 416     ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
 417
 418     ADD_PARENT_CALLBACKS( SendEventsToChild );
 419
 420     return VLC_SUCCESS;
 421 }
 422
 423 /*****************************************************************************
 424  * End: terminate Wall video thread output method
 425  *****************************************************************************/
 426 static void End( vout_thread_t *p_vout )
 427 {
 428     int i_index;
 429
 430     /* Free the fake output buffers we allocated */
 431     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 432     {
 433         i_index--;
 434         free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
 435     }
 436 }
 437
 438 /*****************************************************************************
 439  * Destroy: destroy Wall video thread output method
 440  *****************************************************************************
 441  * Terminate an output method created by WallCreateOutputMethod
 442  *****************************************************************************/
 443 static void Destroy( vlc_object_t *p_this )
 444 {
 445     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 446
 447     RemoveAllVout( p_vout );
 448
 449     DEL_PARENT_CALLBACKS( SendEventsToChild );
 450
 451     free( p_vout->p_sys->pp_vout );
 452     free( p_vout->p_sys );
 453 }
 454
 455 /*****************************************************************************
 456  * Render: displays previously rendered output
 457  *****************************************************************************
 458  * This function send the currently rendered image to Wall image, waits
 459  * until it is displayed and switch the two rendering buffers, preparing next
 460  * frame.
 461  *****************************************************************************/
 462 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
 463 {
 464     picture_t *p_outpic = NULL;
 465     int i_col, i_row, i_vout, i_plane;
 466     int pi_left_skip[VOUT_MAX_PLANES], pi_top_skip[VOUT_MAX_PLANES];
 467
 468     i_vout = 0;
 469
 470     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 471     {
 472         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 473         {
 474             for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 475             {
 476                 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;
 477                 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;
 478             }
 479
 480             if( !p_vout->p_sys->pp_vout[ i_vout ].b_active )
 481             {
 482                 i_vout++;
 483                 continue;
 484             }
 485
 486             while( ( p_outpic =
 487                 vout_CreatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 488                                     0, 0, 0 )
 489                    ) == NULL )
 490             {
 491                 if( p_vout->b_die || p_vout->b_error )
 492                 {
 493                     vout_DestroyPicture(
 494                         p_vout->p_sys->pp_vout[ i_vout ].p_vout, p_outpic );
 495                     return;
 496                 }
 497
 498                 msleep( VOUT_OUTMEM_SLEEP );
 499             }
 500
 501             vout_DatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 502                               p_outpic, p_pic->date );
 503             vout_LinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 504                               p_outpic );
 505
 506             for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 507             {
 508                 uint8_t *p_in, *p_in_end, *p_out;
 509                 int i_in_pitch = p_pic->p[i_plane].i_pitch;
 510                 int i_out_pitch = p_outpic->p[i_plane].i_pitch;
 511                 int i_copy_pitch = p_outpic->p[i_plane].i_visible_pitch;
 512
 513                 p_in = p_pic->p[i_plane].p_pixels
 514                         + pi_top_skip[i_plane] + pi_left_skip[i_plane];
 515
 516                 p_in_end = p_in + p_outpic->p[i_plane].i_visible_lines
 517                                    * p_pic->p[i_plane].i_pitch;
 518
 519                 p_out = p_outpic->p[i_plane].p_pixels;
 520
 521                 while( p_in < p_in_end )
 522                 {
 523                     p_vout->p_vlc->pf_memcpy( p_out, p_in, i_copy_pitch );
 524                     p_in += i_in_pitch;
 525                     p_out += i_out_pitch;
 526                 }
 527
 528 //                pi_left_skip[i_plane] += i_copy_pitch;
 529             }
 530
 531             vout_UnlinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 532                                 p_outpic );
 533             vout_DisplayPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 534                                  p_outpic );
 535
 536             i_vout++;
 537         }
 538
 539 /*         for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ ) */
 540 /*         { */
 541 /*             pi_top_skip[i_plane] += p_vout->p_sys->pp_vout[ i_vout ].i_height */
 542 /*                                      * p_pic->p[i_plane].i_visible_lines */
 543 /*                                      / p_vout->output.i_height */
 544 /*                                      * p_pic->p[i_plane].i_pitch; */
 545 /*         } */
 546     }
 547 }
 548
 549 /*****************************************************************************
 550  * RemoveAllVout: destroy all the child video output threads
 551  *****************************************************************************/
 552 static void RemoveAllVout( vout_thread_t *p_vout )
 553 {
 554     while( p_vout->p_sys->i_vout )
 555     {
 556          --p_vout->p_sys->i_vout;
 557          if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
 558          {
 559              DEL_CALLBACKS(
 560                  p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout,
 561                  SendEvents );
 562              vlc_object_detach(
 563                  p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
 564              vout_Destroy(
 565                  p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
 566          }
 567     }
 568 }
 569
 570 /*****************************************************************************
 571  * SendEvents: forward mouse and keyboard events to the parent p_vout
 572  *****************************************************************************/
 573 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
 574                        vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
 575 {
 576     vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
 577     int i_vout;
 578     vlc_value_t sentval = newval;
 579
 580     /* Find the video output index */
 581     for( i_vout = 0; i_vout < p_vout->p_sys->i_vout; i_vout++ )
 582     {
 583         if( p_this == (vlc_object_t *)p_vout->p_sys->pp_vout[ i_vout ].p_vout )
 584         {
 585             break;
 586         }
 587     }
 588
 589     if( i_vout == p_vout->p_sys->i_vout )
 590     {
 591         return VLC_EGENERIC;
 592     }
 593
 594     /* Translate the mouse coordinates */
 595     if( !strcmp( psz_var, "mouse-x" ) )
 596     {
 597         sentval.i_int += p_vout->output.i_width
 598                           * (i_vout % p_vout->p_sys->i_col)
 599                           / p_vout->p_sys->i_col;
 600     }
 601     else if( !strcmp( psz_var, "mouse-y" ) )
 602     {
 603         sentval.i_int += p_vout->output.i_height
 604                           * (i_vout / p_vout->p_sys->i_row)
 605                           / p_vout->p_sys->i_row;
 606     }
 607
 608     var_Set( p_vout, psz_var, sentval );
 609
 610     return VLC_SUCCESS;
 611 }
 612
 613 /*****************************************************************************
 614  * SendEventsToChild: forward events to the child/children vout
 615  *****************************************************************************/
 616 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
 617                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 618 {
 619     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 620     int i_row, i_col, i_vout = 0;
 621
 622     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 623     {
 624         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 625         {
 626             var_Set( p_vout->p_sys->pp_vout[ i_vout ].p_vout, psz_var, newval);
 627             if( !strcmp( psz_var, "fullscreen" ) ) break;
 628             i_vout++;
 629         }
 630     }
 631
 632     return VLC_SUCCESS;
 633 }