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