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