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

   1 /*****************************************************************************
   2  * puzzle.c : Puzzle game
   3  *****************************************************************************
   4  * Copyright (C) 2005-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea -at- videolan -dot- 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 <math.h>
  37
  38 #include "filter_common.h"
  39 #include "vlc_image.h"
  40 #include "vlc_input.h"
  41 #include "vlc_playlist.h"
  42
  43 /*****************************************************************************
  44  * Local prototypes
  45  *****************************************************************************/
  46 static int  Create    ( vlc_object_t * );
  47 static void Destroy   ( vlc_object_t * );
  48
  49 static int  Init      ( vout_thread_t * );
  50 static void End       ( vout_thread_t * );
  51 static void Render    ( vout_thread_t *, picture_t * );
  52
  53 static int  SendEvents   ( vlc_object_t *, char const *,
  54                            vlc_value_t, vlc_value_t, void * );
  55 static int  MouseEvent   ( vlc_object_t *, char const *,
  56                            vlc_value_t, vlc_value_t, void * );
  57
  58 static int PuzzleCallback( vlc_object_t *, char const *,
  59                            vlc_value_t, vlc_value_t, void * );
  60
  61 /*****************************************************************************
  62  * Module descriptor
  63  *****************************************************************************/
  64
  65 #define ROWS_TEXT N_("Number of puzzle rows")
  66 #define ROWS_LONGTEXT N_("Number of puzzle rows")
  67 #define COLS_TEXT N_("Number of puzzle columns")
  68 #define COLS_LONGTEXT N_("Number of puzzle columns")
  69 #define BLACKSLOT_TEXT N_("Make one tile a black slot")
  70 #define BLACKSLOT_LONGTEXT N_("Make one slot black. Other tiles can only be swapped with the black slot.")
  71
  72 #define CFG_PREFIX "puzzle-"
  73
  74 vlc_module_begin();
  75     set_description( N_("Puzzle interactive game video filter") );
  76     set_shortname( N_( "Puzzle" ));
  77     set_capability( "video filter", 0 );
  78     set_category( CAT_VIDEO );
  79     set_subcategory( SUBCAT_VIDEO_VFILTER );
  80
  81     add_integer_with_range( CFG_PREFIX "rows", 4, 1, 128, NULL,
  82                             ROWS_TEXT, ROWS_LONGTEXT, false );
  83     add_integer_with_range( CFG_PREFIX "cols", 4, 1, 128, NULL,
  84                             COLS_TEXT, COLS_LONGTEXT, false );
  85     add_bool( CFG_PREFIX "black-slot", 0, NULL,
  86               BLACKSLOT_TEXT, BLACKSLOT_LONGTEXT, false );
  87
  88     set_callbacks( Create, Destroy );
  89 vlc_module_end();
  90
  91 static const char *const ppsz_filter_options[] = {
  92     "rows", "cols", "black-slot", NULL
  93 };
  94
  95 /*****************************************************************************
  96  * vout_sys_t: Magnify video output method descriptor
  97  *****************************************************************************/
  98 struct vout_sys_t
  99 {
 100     vout_thread_t *p_vout;
 101
 102     image_handler_t *p_image;
 103
 104     int i_cols;
 105     int i_rows;
 106     int *pi_order;
 107     int i_selected;
 108     bool b_finished;
 109
 110     bool b_blackslot;
 111 };
 112
 113 /*****************************************************************************
 114  * Control: control facility for the vout (forwards to child vout)
 115  *****************************************************************************/
 116 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 117 {
 118     return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
 119 }
 120
 121 /*****************************************************************************
 122  * Misc stuff...
 123  *****************************************************************************/
 124 static bool finished( vout_sys_t *p_sys )
 125 {
 126     int i;
 127     for( i = 0; i < p_sys->i_cols * p_sys->i_rows; i++ )
 128     {
 129         if( i != p_sys->pi_order[i] ) return false;
 130     }
 131     return true;
 132 }
 133 static bool is_valid( vout_sys_t *p_sys )
 134 {
 135     int i, j, d=0;
 136     if( p_sys->b_blackslot == false ) return true;
 137     for( i = 0; i < p_sys->i_cols * p_sys->i_rows; i++ )
 138     {
 139         if( p_sys->pi_order[i] == p_sys->i_cols * p_sys->i_rows - 1 )
 140         {
 141             d += i / p_sys->i_cols + 1;
 142             continue;
 143         }
 144         for( j = i+1; j < p_sys->i_cols * p_sys->i_rows; j++ )
 145         {
 146             if( p_sys->pi_order[j] == p_sys->i_cols * p_sys->i_rows - 1 )
 147                 continue;
 148             if( p_sys->pi_order[i] > p_sys->pi_order[j] ) d++;
 149         }
 150     }
 151     if( d%2!=0 ) return false;
 152     else return true;
 153 }
 154 static void shuffle( vout_sys_t *p_sys )
 155 {
 156     int i, c;
 157     free( p_sys->pi_order );
 158     p_sys->pi_order = malloc( p_sys->i_cols * p_sys->i_rows * sizeof( int ) );
 159     do
 160     {
 161         for( i = 0; i < p_sys->i_cols * p_sys->i_rows; i++ )
 162         {
 163             p_sys->pi_order[i] = -1;
 164         }
 165         i = 0;
 166         for( c = 0; c < p_sys->i_cols * p_sys->i_rows; )
 167         {
 168             i = rand()%( p_sys->i_cols * p_sys->i_rows );
 169             if( p_sys->pi_order[i] == -1 )
 170             {
 171                 p_sys->pi_order[i] = c;
 172                 c++;
 173             }
 174         }
 175         p_sys->b_finished = finished( p_sys );
 176     } while(    p_sys->b_finished == true
 177              || is_valid( p_sys ) == false );
 178
 179     if( p_sys->b_blackslot == true )
 180     {
 181         for( i = 0; i < p_sys->i_cols * p_sys->i_rows; i++ )
 182         {
 183             if( p_sys->pi_order[i] ==
 184                 p_sys->i_cols * p_sys->i_rows - 1 )
 185             {
 186                 p_sys->i_selected = i;
 187                 break;
 188             }
 189         }
 190     }
 191     else
 192     {
 193         p_sys->i_selected = -1;
 194     }
 195 }
 196
 197 /*****************************************************************************
 198  * Create: allocates Magnify video thread output method
 199  *****************************************************************************/
 200 static int Create( vlc_object_t *p_this )
 201 {
 202     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 203
 204     /* Allocate structure */
 205     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 206     if( p_vout->p_sys == NULL )
 207         return VLC_ENOMEM;
 208
 209     p_vout->p_sys->p_image = image_HandlerCreate( p_vout );
 210
 211     config_ChainParse( p_vout, CFG_PREFIX, ppsz_filter_options,
 212                        p_vout->p_cfg );
 213
 214     p_vout->p_sys->i_rows =
 215         var_CreateGetIntegerCommand( p_vout, CFG_PREFIX "rows" );
 216     p_vout->p_sys->i_cols =
 217         var_CreateGetIntegerCommand( p_vout, CFG_PREFIX "cols" );
 218     p_vout->p_sys->b_blackslot =
 219         var_CreateGetBoolCommand( p_vout, CFG_PREFIX "black-slot" );
 220     var_AddCallback( p_vout, CFG_PREFIX "rows",
 221                      PuzzleCallback, p_vout->p_sys );
 222     var_AddCallback( p_vout, CFG_PREFIX "cols",
 223                      PuzzleCallback, p_vout->p_sys );
 224     var_AddCallback( p_vout, CFG_PREFIX "black-slot",
 225                      PuzzleCallback, p_vout->p_sys );
 226
 227     p_vout->p_sys->pi_order = NULL;
 228     shuffle( p_vout->p_sys );
 229
 230     p_vout->pf_init = Init;
 231     p_vout->pf_end = End;
 232     p_vout->pf_manage = NULL;
 233     p_vout->pf_render = Render;
 234     p_vout->pf_display = NULL;
 235     p_vout->pf_control = Control;
 236
 237     return VLC_SUCCESS;
 238 }
 239
 240 /*****************************************************************************
 241  * Init: initialize Magnify video thread output method
 242  *****************************************************************************/
 243 static int Init( vout_thread_t *p_vout )
 244 {
 245     int i_index;
 246     picture_t *p_pic;
 247     video_format_t fmt;
 248     memset( &fmt, 0, sizeof( video_format_t ) );
 249
 250     I_OUTPUTPICTURES = 0;
 251
 252     /* Initialize the output structure */
 253     p_vout->output.i_chroma = p_vout->render.i_chroma;
 254     p_vout->output.i_width  = p_vout->render.i_width;
 255     p_vout->output.i_height = p_vout->render.i_height;
 256     p_vout->output.i_aspect = p_vout->render.i_aspect;
 257
 258     p_vout->fmt_out = p_vout->fmt_in;
 259     fmt = p_vout->fmt_out;
 260
 261     /* Try to open the real video output */
 262     msg_Dbg( p_vout, "spawning the real video output" );
 263
 264     p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
 265
 266     /* Everything failed */
 267     if( p_vout->p_sys->p_vout == NULL )
 268     {
 269         msg_Err( p_vout, "cannot open vout, aborting" );
 270         return VLC_EGENERIC;
 271     }
 272
 273     var_AddCallback( p_vout->p_sys->p_vout, "mouse-x", MouseEvent, p_vout );
 274     var_AddCallback( p_vout->p_sys->p_vout, "mouse-y", MouseEvent, p_vout );
 275     var_AddCallback( p_vout->p_sys->p_vout, "mouse-clicked",
 276                      MouseEvent, p_vout);
 277
 278     ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
 279     ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
 280     ADD_PARENT_CALLBACKS( SendEventsToChild );
 281
 282     return VLC_SUCCESS;
 283 }
 284
 285 /*****************************************************************************
 286  * End: terminate Magnify video thread output method
 287  *****************************************************************************/
 288 static void End( vout_thread_t *p_vout )
 289 {
 290     int i_index;
 291
 292     /* Free the fake output buffers we allocated */
 293     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 294     {
 295         i_index--;
 296         free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
 297     }
 298
 299     var_DelCallback( p_vout->p_sys->p_vout, "mouse-x", MouseEvent, p_vout);
 300     var_DelCallback( p_vout->p_sys->p_vout, "mouse-y", MouseEvent, p_vout);
 301     var_DelCallback( p_vout->p_sys->p_vout, "mouse-clicked", MouseEvent, p_vout);
 302 }
 303
 304 #define SHUFFLE_WIDTH 81
 305 #define SHUFFLE_HEIGHT 13
 306 static const char *shuffle_button[] =
 307 {
 308 ".................................................................................",
 309 "..............  ............................   ........   ......  ...............",
 310 "..............  ...........................  .........  ........  ...............",
 311 "..............  ...........................  .........  ........  ...............",
 312 "..     .......  .    .......  ....  ......     ......     ......  ........    ...",
 313 ".  .... ......   ...  ......  ....  .......  .........  ........  .......  ..  ..",
 314 ".  ...........  ....  ......  ....  .......  .........  ........  ......  ....  .",
 315 ".      .......  ....  ......  ....  .......  .........  ........  ......        .",
 316 "..      ......  ....  ......  ....  .......  .........  ........  ......  .......",
 317 "......  ......  ....  ......  ....  .......  .........  ........  ......  .......",
 318 ". ....  ......  ....  ......  ...   .......  .........  ........  .......  .... .",
 319 "..     .......  ....  .......    .  .......  .........  ........  ........     ..",
 320 "................................................................................."};
 321
 322
 323 /*****************************************************************************
 324  * Destroy: destroy Magnify video thread output method
 325  *****************************************************************************/
 326 static void Destroy( vlc_object_t *p_this )
 327 {
 328     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 329
 330     if( p_vout->p_sys->p_vout )
 331     {
 332         DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
 333         vlc_object_detach( p_vout->p_sys->p_vout );
 334         vlc_object_release( p_vout->p_sys->p_vout );
 335     }
 336
 337     image_HandlerDelete( p_vout->p_sys->p_image );
 338     free( p_vout->p_sys->pi_order );
 339
 340     DEL_PARENT_CALLBACKS( SendEventsToChild );
 341
 342     free( p_vout->p_sys );
 343 }
 344
 345 /*****************************************************************************
 346  * Render: displays previously rendered output
 347  *****************************************************************************/
 348 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
 349 {
 350     picture_t *p_outpic;
 351
 352     //video_format_t fmt_out;
 353     // memset( &fmt_out, 0, sizeof(video_format_t) );
 354     //picture_t *p_converted;
 355
 356     int i_plane;
 357
 358     int i_rows = p_vout->p_sys->i_rows;
 359     int i_cols = p_vout->p_sys->i_cols;
 360
 361     /* This is a new frame. Get a structure from the video_output. */
 362     while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
 363               == NULL )
 364     {
 365         if( p_vout->b_die || p_vout->b_error )
 366         {
 367             return;
 368         }
 369         msleep( VOUT_OUTMEM_SLEEP );
 370     }
 371
 372     vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
 373
 374     for( i_plane = 0; i_plane < p_outpic->i_planes; i_plane++ )
 375     {
 376         plane_t *p_in = p_pic->p+i_plane;
 377         plane_t *p_out = p_outpic->p+i_plane;
 378         int i_pitch = p_in->i_pitch;
 379         int i;
 380
 381         for( i = 0; i < i_cols * i_rows; i++ )
 382         {
 383             int i_col = i % i_cols;
 384             int i_row = i / i_cols;
 385             int i_ocol = p_vout->p_sys->pi_order[i] % i_cols;
 386             int i_orow = p_vout->p_sys->pi_order[i] / i_cols;
 387             int i_last_row = i_row + 1;
 388             i_orow *= p_in->i_lines / i_rows;
 389             i_row *= p_in->i_lines / i_rows;
 390             i_last_row *= p_in->i_lines / i_rows;
 391
 392             if( p_vout->p_sys->b_blackslot == true
 393                 && p_vout->p_sys->b_finished == false
 394                 && i == p_vout->p_sys->i_selected )
 395             {
 396                 uint8_t color = ( i_plane == Y_PLANE ? 0x0 : 0x80 );
 397                 for( ; i_row < i_last_row; i_row++, i_orow++ )
 398                 {
 399                     vlc_memset( p_out->p_pixels + i_row * i_pitch
 400                                                + i_col * i_pitch / i_cols,
 401                                color, i_pitch / i_cols );
 402                 }
 403             }
 404             else
 405             {
 406                 for( ; i_row < i_last_row; i_row++, i_orow++ )
 407                 {
 408                     vlc_memcpy( p_out->p_pixels + i_row * i_pitch
 409                                                + i_col * i_pitch / i_cols,
 410                                p_in->p_pixels + i_orow * i_pitch
 411                                               + i_ocol * i_pitch / i_cols,
 412                                i_pitch / i_cols );
 413                 }
 414             }
 415         }
 416     }
 417
 418     if(    p_vout->p_sys->i_selected != -1
 419         && p_vout->p_sys->b_blackslot == false )
 420     {
 421         plane_t *p_in = p_pic->p+Y_PLANE;
 422         plane_t *p_out = p_outpic->p+Y_PLANE;
 423         int i_pitch = p_in->i_pitch;
 424         int i_col = p_vout->p_sys->i_selected % i_cols;
 425         int i_row = p_vout->p_sys->i_selected / i_cols;
 426         int i_last_row = i_row + 1;
 427         i_row *= p_in->i_lines / i_rows;
 428         i_last_row *= p_in->i_lines / i_rows;
 429         vlc_memset( p_out->p_pixels + i_row * i_pitch
 430                                    + i_col * i_pitch / i_cols,
 431                    0xff, i_pitch / i_cols );
 432         for( ; i_row < i_last_row; i_row++ )
 433         {
 434             p_out->p_pixels[   i_row * i_pitch
 435                              + i_col * i_pitch / i_cols ] = 0xff;
 436             p_out->p_pixels[ i_row * i_pitch
 437                              + (i_col+1) * i_pitch / i_cols - 1 ] = 0xff;
 438         }
 439         i_row--;
 440         vlc_memset( p_out->p_pixels + i_row * i_pitch
 441                                    + i_col * i_pitch / i_cols,
 442                    0xff, i_pitch / i_cols );
 443     }
 444
 445     if( p_vout->p_sys->b_finished == true )
 446     {
 447         int i, j;
 448         plane_t *p_out = p_outpic->p+Y_PLANE;
 449         int i_pitch = p_out->i_pitch;
 450         for( i = 0; i < SHUFFLE_HEIGHT; i++ )
 451         {
 452             for( j = 0; j < SHUFFLE_WIDTH; j++ )
 453             {
 454                 if( shuffle_button[i][j] == '.' )
 455                    p_out->p_pixels[ i * i_pitch + j ] = 0xff;
 456             }
 457         }
 458     }
 459
 460     vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
 461 }
 462
 463 /*****************************************************************************
 464  * SendEvents: forward mouse and keyboard events to the parent p_vout
 465  *****************************************************************************/
 466 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
 467                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 468 {
 469     VLC_UNUSED(p_this); VLC_UNUSED(oldval);
 470
 471     var_Set( (vlc_object_t *)p_data, psz_var, newval );
 472
 473     return VLC_SUCCESS;
 474 }
 475
 476 /*****************************************************************************
 477  * SendEventsToChild: forward events to the child/children vout
 478  *****************************************************************************/
 479 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
 480                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 481 {
 482     VLC_UNUSED(p_data); VLC_UNUSED(oldval);
 483     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 484     var_Set( p_vout->p_sys->p_vout, psz_var, newval );
 485     return VLC_SUCCESS;
 486 }
 487
 488 /*****************************************************************************
 489  * MouseEvent: callback for mouse events
 490  *****************************************************************************/
 491 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
 492                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 493 {
 494     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(newval);
 495     vout_thread_t *p_vout = (vout_thread_t*)p_data;
 496     int i_x, i_y;
 497     int i_v;
 498
 499 #define MOUSE_DOWN    1
 500 #define MOUSE_CLICKED 2
 501 #define MOUSE_MOVE_X  4
 502 #define MOUSE_MOVE_Y  8
 503 #define MOUSE_MOVE    12
 504     uint8_t mouse= 0;
 505
 506     int v_h = p_vout->output.i_height;
 507     int v_w = p_vout->output.i_width;
 508     int i_pos;
 509
 510     if( psz_var[6] == 'x' ) mouse |= MOUSE_MOVE_X;
 511     if( psz_var[6] == 'y' ) mouse |= MOUSE_MOVE_Y;
 512     if( psz_var[6] == 'c' ) mouse |= MOUSE_CLICKED;
 513
 514     i_v = var_GetInteger( p_vout->p_sys->p_vout, "mouse-button-down" );
 515     if( i_v & 0x1 ) mouse |= MOUSE_DOWN;
 516     i_y = var_GetInteger( p_vout->p_sys->p_vout, "mouse-y" );
 517     i_x = var_GetInteger( p_vout->p_sys->p_vout, "mouse-x" );
 518
 519     if( i_y < 0 || i_x < 0 || i_y >= v_h || i_x >= v_w )
 520         return VLC_SUCCESS;
 521
 522     if( mouse & MOUSE_CLICKED )
 523     {
 524         i_pos = p_vout->p_sys->i_cols * ( ( p_vout->p_sys->i_rows * i_y ) / v_h ) + (p_vout->p_sys->i_cols * i_x ) / v_w;
 525         if( p_vout->p_sys->b_finished == true
 526             && i_x < SHUFFLE_WIDTH && i_y < SHUFFLE_HEIGHT )
 527         {
 528             shuffle( p_vout->p_sys );
 529         }
 530         else if( p_vout->p_sys->i_selected == -1 )
 531         {
 532             p_vout->p_sys->i_selected = i_pos;
 533         }
 534         else if( p_vout->p_sys->i_selected == i_pos
 535                  && p_vout->p_sys->b_blackslot == false )
 536         {
 537             p_vout->p_sys->i_selected = -1;
 538         }
 539         else if(    ( p_vout->p_sys->i_selected == i_pos + 1
 540                       && p_vout->p_sys->i_selected%p_vout->p_sys->i_cols != 0 )
 541                  || ( p_vout->p_sys->i_selected == i_pos - 1
 542                       && i_pos % p_vout->p_sys->i_cols != 0 )
 543                  || p_vout->p_sys->i_selected == i_pos + p_vout->p_sys->i_cols
 544                  || p_vout->p_sys->i_selected == i_pos - p_vout->p_sys->i_cols )
 545         {
 546             int a = p_vout->p_sys->pi_order[ p_vout->p_sys->i_selected ];
 547             p_vout->p_sys->pi_order[ p_vout->p_sys->i_selected ] =
 548                 p_vout->p_sys->pi_order[ i_pos ];
 549             p_vout->p_sys->pi_order[ i_pos ] = a;
 550             if( p_vout->p_sys->b_blackslot == true )
 551                 p_vout->p_sys->i_selected = i_pos;
 552             else
 553                 p_vout->p_sys->i_selected = -1;
 554
 555             p_vout->p_sys->b_finished = finished( p_vout->p_sys );
 556         }
 557     }
 558     return VLC_SUCCESS;
 559 }
 560
 561 static int PuzzleCallback( vlc_object_t *p_this, char const *psz_var,
 562                            vlc_value_t oldval, vlc_value_t newval,
 563                            void *p_data )
 564 {
 565     VLC_UNUSED(p_this); VLC_UNUSED(oldval);
 566     vout_sys_t *p_sys = (vout_sys_t *)p_data;
 567     if( !strcmp( psz_var, CFG_PREFIX "rows" ) )
 568     {
 569         p_sys->i_rows = __MAX( 1, newval.i_int );
 570     }
 571     else if( !strcmp( psz_var, CFG_PREFIX "cols" ) )
 572     {
 573         p_sys->i_cols = __MAX( 1, newval.i_int );
 574     }
 575     else if( !strcmp( psz_var, CFG_PREFIX "black-slot" ) )
 576     {
 577         p_sys->b_blackslot = newval.b_bool;
 578     }
 579     shuffle( p_sys );
 580     return VLC_SUCCESS;
 581 }