git.sesse.net Git - vlc/blob - plugins/sdl/vout_sdl.c

   1 /*****************************************************************************
   2  * vout_sdl.c: SDL video output display method
   3  *****************************************************************************
   4  * Copyright (C) 1998-2001 VideoLAN
   5  * $Id: vout_sdl.c,v 1.72 2001/12/19 18:14:23 sam Exp $
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Pierre Baillet <oct@zoy.org>
   9  *          Arnaud de Bossoreille de Ribou <bozo@via.ecp.fr>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  24  *****************************************************************************/
  25
  26 #define MODULE_NAME sdl
  27 #include "modules_inner.h"
  28
  29 /*****************************************************************************
  30  * Preamble
  31  *****************************************************************************/
  32 #include "defs.h"
  33
  34 #include <errno.h>                                                 /* ENOMEM */
  35 #include <stdlib.h>                                                /* free() */
  36 #include <string.h>                                            /* strerror() */
  37
  38 #include <sys/types.h>
  39 #ifndef WIN32
  40 #   include <netinet/in.h>                            /* BSD: struct in_addr */
  41 #endif
  42
  43 #include SDL_INCLUDE_FILE
  44
  45 #include "common.h"
  46 #include "intf_msg.h"
  47 #include "threads.h"
  48 #include "mtime.h"
  49 #include "netutils.h"
  50 #include "tests.h"
  51
  52 #include "video.h"
  53 #include "video_output.h"
  54
  55 #include "interface.h"
  56
  57 #include "modules.h"
  58 #include "modules_export.h"
  59
  60 #define SDL_MAX_DIRECTBUFFERS 5
  61 #define SDL_DEFAULT_BPP 16
  62
  63 /*****************************************************************************
  64  * vout_sys_t: video output SDL method descriptor
  65  *****************************************************************************
  66  * This structure is part of the video output thread descriptor.
  67  * It describes the SDL specific properties of an output thread.
  68  *****************************************************************************/
  69 typedef struct vout_sys_s
  70 {
  71     SDL_Surface *   p_display;                             /* display device */
  72     SDL_Overlay *   p_overlay; /* An overlay we keep to grab the XVideo port */
  73
  74     int i_width;
  75     int i_height;
  76
  77     boolean_t   b_cursor;
  78     boolean_t   b_cursor_autohidden;
  79     mtime_t     i_lastmoved;
  80
  81 } vout_sys_t;
  82
  83 /*****************************************************************************
  84  * picture_sys_t: direct buffer method descriptor
  85  *****************************************************************************
  86  * This structure is part of the picture descriptor, it describes the
  87  * SDL specific properties of a direct buffer.
  88  *****************************************************************************/
  89 typedef struct picture_sys_s
  90 {
  91     SDL_Overlay *p_overlay;
  92
  93 } picture_sys_t;
  94
  95 /*****************************************************************************
  96  * Local prototypes.
  97  *****************************************************************************/
  98 static int  vout_Probe      ( probedata_t *p_data );
  99 static int  vout_Create     ( struct vout_thread_s * );
 100 static int  vout_Init       ( struct vout_thread_s * );
 101 static void vout_End        ( struct vout_thread_s * );
 102 static void vout_Destroy    ( struct vout_thread_s * );
 103 static int  vout_Manage     ( struct vout_thread_s * );
 104 static void vout_Display    ( struct vout_thread_s *, struct picture_s * );
 105
 106 static int  SDLOpenDisplay      ( vout_thread_t *p_vout );
 107 static void SDLCloseDisplay     ( vout_thread_t *p_vout );
 108 static int  SDLNewPicture       ( vout_thread_t *p_vout, picture_t *p_pic );
 109
 110 /*****************************************************************************
 111  * Functions exported as capabilities. They are declared as static so that
 112  * we don't pollute the namespace too much.
 113  *****************************************************************************/
 114 void _M( vout_getfunctions )( function_list_t * p_function_list )
 115 {
 116     p_function_list->pf_probe = vout_Probe;
 117     p_function_list->functions.vout.pf_create     = vout_Create;
 118     p_function_list->functions.vout.pf_init       = vout_Init;
 119     p_function_list->functions.vout.pf_end        = vout_End;
 120     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 121     p_function_list->functions.vout.pf_manage     = vout_Manage;
 122     p_function_list->functions.vout.pf_display    = vout_Display;
 123     p_function_list->functions.vout.pf_setpalette = NULL;
 124 }
 125
 126 /*****************************************************************************
 127  * vout_Probe: probe the video driver and return a score
 128  *****************************************************************************
 129  * This function tries to initialize SDL and returns a score to the
 130  * plugin manager so that it can select the best plugin.
 131  *****************************************************************************/
 132 static int vout_Probe( probedata_t *p_data )
 133 {
 134     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 135     {
 136         return( 0 );
 137     }
 138
 139     if( TestMethod( VOUT_METHOD_VAR, "sdl" ) )
 140     {
 141         return( 999 );
 142     }
 143
 144     return( 100 );
 145 }
 146
 147 /*****************************************************************************
 148  * vout_Create: allocate SDL video thread output method
 149  *****************************************************************************
 150  * This function allocate and initialize a SDL vout method. It uses some of the
 151  * vout properties to choose the correct mode, and change them according to the
 152  * mode actually used.
 153  *****************************************************************************/
 154 static int vout_Create( vout_thread_t *p_vout )
 155 {
 156     /* Allocate structure */
 157     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 158     if( p_vout->p_sys == NULL )
 159     {
 160         intf_ErrMsg( "vout error: can't create p_sys (%s)", strerror(ENOMEM) );
 161         return( 1 );
 162     }
 163
 164     /* Initialize library */
 165     if( SDL_Init( SDL_INIT_VIDEO
 166 #ifndef WIN32
 167     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 168                 | SDL_INIT_EVENTTHREAD
 169 #endif
 170 #ifdef DEBUG
 171     /* In debug mode you may want vlc to dump a core instead of staying
 172      * stuck */
 173                 | SDL_INIT_NOPARACHUTE
 174 #endif
 175                 ) < 0 )
 176     {
 177         intf_ErrMsg( "vout error: can't initialize SDL (%s)", SDL_GetError() );
 178         free( p_vout->p_sys );
 179         return( 1 );
 180     }
 181
 182     p_vout->p_sys->b_cursor = 1; /* TODO should be done with a main_GetInt.. */
 183     p_vout->p_sys->b_cursor_autohidden = 0;
 184     p_vout->p_sys->i_lastmoved = mdate();
 185
 186     if( p_vout->render.i_height * p_vout->render.i_aspect
 187          >= p_vout->render.i_width * VOUT_ASPECT_FACTOR )
 188     {
 189         p_vout->p_sys->i_width = p_vout->render.i_height
 190             * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR;
 191         p_vout->p_sys->i_height = p_vout->render.i_height;
 192     }
 193     else
 194     {
 195         p_vout->p_sys->i_width = p_vout->render.i_width;
 196         p_vout->p_sys->i_height = p_vout->render.i_width
 197             * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect;
 198     }
 199
 200     if( p_vout->p_sys->i_width <= 300 && p_vout->p_sys->i_height <= 300 )
 201     {
 202         p_vout->p_sys->i_width <<= 1;
 203         p_vout->p_sys->i_height <<= 1;
 204     }
 205     else if( p_vout->p_sys->i_width <= 400 && p_vout->p_sys->i_height <= 400 )
 206     {
 207         p_vout->p_sys->i_width += p_vout->p_sys->i_width >> 1;
 208         p_vout->p_sys->i_height += p_vout->p_sys->i_height >> 1;
 209     }
 210
 211     if( SDLOpenDisplay( p_vout ) )
 212     {
 213         intf_ErrMsg( "vout error: can't set up SDL (%s)", SDL_GetError() );
 214         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 215         free( p_vout->p_sys );
 216         return( 1 );
 217     }
 218
 219     return( 0 );
 220 }
 221
 222 /*****************************************************************************
 223  * vout_Init: initialize SDL video thread output method
 224  *****************************************************************************
 225  * This function initialize the SDL display device.
 226  *****************************************************************************/
 227 static int vout_Init( vout_thread_t *p_vout )
 228 {
 229     int i_index;
 230     picture_t *p_pic;
 231
 232     I_OUTPUTPICTURES = 0;
 233
 234     /* Initialize the output structure */
 235     switch( p_vout->render.i_chroma )
 236     {
 237         case YUV_420_PICTURE:
 238             p_vout->output.i_chroma = p_vout->render.i_chroma;
 239             p_vout->output.i_width  = p_vout->render.i_width;
 240             p_vout->output.i_height = p_vout->render.i_height;
 241             p_vout->output.i_aspect = p_vout->render.i_aspect;
 242             break;
 243
 244         default:
 245             return( 0 );
 246     }
 247
 248     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 249     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 250     {
 251         p_pic = NULL;
 252
 253         /* Find an empty picture slot */
 254         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 255         {
 256             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 257             {
 258                 p_pic = p_vout->p_picture + i_index;
 259                 break;
 260             }
 261         }
 262
 263         /* Allocate the picture if we found one */
 264         if( p_pic == NULL || SDLNewPicture( p_vout, p_pic ) )
 265         {
 266             break;
 267         }
 268
 269         p_pic->i_status        = DESTROYED_PICTURE;
 270         p_pic->i_type          = DIRECT_PICTURE;
 271
 272         p_pic->i_left_margin   =
 273         p_pic->i_right_margin  =
 274         p_pic->i_top_margin    =
 275         p_pic->i_bottom_margin = 0;
 276
 277         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 278
 279         I_OUTPUTPICTURES++;
 280     }
 281
 282     return( 0 );
 283 }
 284
 285 /*****************************************************************************
 286  * vout_End: terminate Sys video thread output method
 287  *****************************************************************************
 288  * Terminate an output method created by vout_SDLCreate
 289  *****************************************************************************/
 290 static void vout_End( vout_thread_t *p_vout )
 291 {
 292     int i_index;
 293
 294     /* Free the output buffers we allocated */
 295     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 296     {
 297         i_index--;
 298         SDL_UnlockYUVOverlay( PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 299         SDL_FreeYUVOverlay( PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 300         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 301     }
 302 }
 303
 304 /*****************************************************************************
 305  * vout_Destroy: destroy Sys video thread output method
 306  *****************************************************************************
 307  * Terminate an output method created by vout_SDLCreate
 308  *****************************************************************************/
 309 static void vout_Destroy( vout_thread_t *p_vout )
 310 {
 311     SDLCloseDisplay( p_vout );
 312
 313     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 314
 315     free( p_vout->p_sys );
 316 }
 317
 318 /*****************************************************************************
 319  * vout_Manage: handle Sys events
 320  *****************************************************************************
 321  * This function should be called regularly by video output thread. It returns
 322  * a non null value if an error occured.
 323  *****************************************************************************/
 324 static int vout_Manage( vout_thread_t *p_vout )
 325 {
 326     SDL_Event event;                                            /* SDL event */
 327
 328     /* Process events */
 329     while( SDL_PollEvent(&event) )
 330     {
 331         switch( event.type )
 332         {
 333         case SDL_VIDEORESIZE:                          /* Resizing of window */
 334             p_vout->p_sys->i_width = event.resize.w;
 335             p_vout->p_sys->i_height = event.resize.h;
 336             SDLCloseDisplay( p_vout );
 337             SDLOpenDisplay( p_vout );
 338             break;
 339
 340         case SDL_MOUSEMOTION:
 341             if( p_vout->p_sys->b_cursor &&
 342                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 343             {
 344                 if( p_vout->p_sys->b_cursor_autohidden )
 345                 {
 346                     p_vout->p_sys->b_cursor_autohidden = 0;
 347                     SDL_ShowCursor( 1 );
 348                 }
 349                 else
 350                 {
 351                     p_vout->p_sys->i_lastmoved = mdate();
 352                 }
 353             }
 354             break;
 355
 356         case SDL_MOUSEBUTTONUP:
 357             switch( event.button.button )
 358             {
 359             case SDL_BUTTON_RIGHT:
 360                 p_main->p_intf->b_menu_change = 1;
 361                 break;
 362             }
 363             break;
 364
 365         case SDL_MOUSEBUTTONDOWN:
 366             switch( event.button.button )
 367             {
 368             case SDL_BUTTON_LEFT:
 369                 /* Handle clicks */
 370                 break;
 371             }
 372             break;
 373
 374         case SDL_QUIT:
 375             p_main->p_intf->b_die = 1;
 376             break;
 377
 378         case SDL_KEYDOWN:                             /* if a key is pressed */
 379
 380             switch( event.key.keysym.sym )
 381             {
 382             case SDLK_q:                                             /* quit */
 383             case SDLK_ESCAPE:
 384                 p_main->p_intf->b_die = 1;
 385                 break;
 386
 387             case SDLK_f:                             /* switch to fullscreen */
 388                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 389                 break;
 390
 391             case SDLK_c:                                 /* toggle grayscale */
 392                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 393                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 394                 break;
 395
 396             case SDLK_i:                                      /* toggle info */
 397                 p_vout->b_info = ! p_vout->b_info;
 398                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 399                 break;
 400
 401             case SDLK_s:                                   /* toggle scaling */
 402                 p_vout->b_scale = ! p_vout->b_scale;
 403                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 404                 break;
 405
 406             case SDLK_SPACE:                             /* toggle interface */
 407                 p_vout->b_interface = ! p_vout->b_interface;
 408                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 409                 break;
 410
 411             case SDLK_MENU:
 412                 p_main->p_intf->b_menu_change = 1;
 413                 break;
 414
 415             case SDLK_F10: network_ChannelJoin( 0 ); break;
 416             case SDLK_F1:  network_ChannelJoin( 1 ); break;
 417             case SDLK_F2:  network_ChannelJoin( 2 ); break;
 418             case SDLK_F3:  network_ChannelJoin( 3 ); break;
 419             case SDLK_F4:  network_ChannelJoin( 4 ); break;
 420             case SDLK_F5:  network_ChannelJoin( 5 ); break;
 421             case SDLK_F6:  network_ChannelJoin( 6 ); break;
 422             case SDLK_F7:  network_ChannelJoin( 7 ); break;
 423             case SDLK_F8:  network_ChannelJoin( 8 ); break;
 424             case SDLK_F9:  network_ChannelJoin( 9 ); break;
 425
 426             default:
 427                 intf_DbgMsg( "unhandled key %i", event.key.keysym.sym );
 428                 break;
 429             }
 430             break;
 431
 432         default:
 433             break;
 434         }
 435     }
 436
 437     /* Fullscreen change */
 438     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 439     {
 440         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 441
 442         SDL_WM_ToggleFullScreen(p_vout->p_sys->p_display);
 443
 444         p_vout->p_sys->b_cursor_autohidden = 0;
 445         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 446                         ! p_vout->p_sys->b_cursor_autohidden );
 447
 448         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 449     }
 450
 451     /* Pointer change */
 452     if( ! p_vout->p_sys->b_cursor_autohidden &&
 453         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 454     {
 455         /* Hide the mouse automatically */
 456         p_vout->p_sys->b_cursor_autohidden = 1;
 457         SDL_ShowCursor( 0 );
 458     }
 459
 460     return( 0 );
 461 }
 462
 463 /*****************************************************************************
 464  * vout_Display: displays previously rendered output
 465  *****************************************************************************
 466  * This function sends the currently rendered image to the display.
 467  *****************************************************************************/
 468 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 469 {
 470     int x, y, w, h;
 471     SDL_Rect disp;
 472
 473     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 474                        &x, &y, &w, &h );
 475     disp.x = x;
 476     disp.y = y;
 477     disp.w = w;
 478     disp.h = h;
 479
 480     SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 481     SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 482     SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 483 }
 484
 485 /* following functions are local */
 486
 487 /*****************************************************************************
 488  * SDLOpenDisplay: open and initialize SDL device
 489  *****************************************************************************
 490  * Open and initialize display according to preferences specified in the vout
 491  * thread fields.
 492  *****************************************************************************/
 493 static int SDLOpenDisplay( vout_thread_t *p_vout )
 494 {
 495     Uint32 i_flags;
 496     int    i_bpp;
 497
 498     /* Initialize flags and cursor */
 499     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE;
 500     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 501
 502     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 503                              SDL_DEFAULT_BPP, i_flags );
 504     if( i_bpp == 0 )
 505     {
 506         intf_ErrMsg( "vout error: no video mode available" );
 507         return( 1 );
 508     }
 509
 510     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 511                                                  p_vout->p_sys->i_height,
 512                                                  i_bpp, i_flags );
 513
 514     if( p_vout->p_sys->p_display == NULL )
 515     {
 516         intf_ErrMsg( "vout error: cannot set video mode" );
 517         return( 1 );
 518     }
 519
 520     SDL_LockSurface( p_vout->p_sys->p_display );
 521
 522     p_vout->p_sys->p_overlay =
 523         SDL_CreateYUVOverlay( 32, 32, SDL_YV12_OVERLAY,
 524                               p_vout->p_sys->p_display );
 525
 526     if( p_vout->p_sys->p_overlay == NULL )
 527     {
 528         intf_ErrMsg( "vout error: cannot set overlay" );
 529         SDL_UnlockSurface( p_vout->p_sys->p_display );
 530         SDL_FreeSurface( p_vout->p_sys->p_display );
 531         return( 1 );
 532     }
 533
 534     if( p_vout->p_sys->p_overlay->hw_overlay )
 535     {
 536         SDL_WM_SetCaption( VOUT_TITLE " (hardware SDL output)",
 537                            VOUT_TITLE " (hardware SDL output)" );
 538     }
 539     else
 540     {
 541         SDL_WM_SetCaption( VOUT_TITLE " (software SDL output)",
 542                            VOUT_TITLE " (software SDL output)" );
 543     }
 544
 545     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 546
 547     return( 0 );
 548 }
 549
 550 /*****************************************************************************
 551  * SDLCloseDisplay: close and reset SDL device
 552  *****************************************************************************
 553  * This function returns all resources allocated by SDLOpenDisplay and restore
 554  * the original state of the device.
 555  *****************************************************************************/
 556 static void SDLCloseDisplay( vout_thread_t *p_vout )
 557 {
 558     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 559     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 560     SDL_FreeSurface( p_vout->p_sys->p_display );
 561 }
 562
 563 /*****************************************************************************
 564  * SDLNewPicture: allocate a picture
 565  *****************************************************************************
 566  * Returns 0 on success, -1 otherwise
 567  *****************************************************************************/
 568 static int SDLNewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 569 {
 570     int i_width  = p_vout->output.i_width;
 571     int i_height = p_vout->output.i_height;
 572
 573     switch( p_vout->output.i_chroma )
 574     {
 575         case YUV_420_PICTURE:
 576             /* We know this chroma, allocate a buffer which will be used
 577              * directly by the decoder */
 578             p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 579
 580             if( p_pic->p_sys == NULL )
 581             {
 582                 return -1;
 583             }
 584
 585             p_pic->p_sys->p_overlay =
 586                 SDL_CreateYUVOverlay( i_width, i_height,
 587                                       SDL_YV12_OVERLAY,
 588                                       p_vout->p_sys->p_display );
 589
 590             if( p_pic->p_sys->p_overlay == NULL )
 591             {
 592                 free( p_pic->p_sys );
 593                 return -1;
 594             }
 595
 596             SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 597
 598             /* Precalculate some values */
 599             p_pic->i_size         = i_width * i_height;
 600             p_pic->i_chroma_width = i_width / 2;
 601             p_pic->i_chroma_size  = i_height * ( i_width / 2 );
 602
 603             /* FIXME: try to get the right i_bytes value from p_overlay */
 604             p_pic->planes[ Y_PLANE ].p_data = p_pic->p_sys->p_overlay->pixels[ 0 ];
 605             p_pic->planes[ Y_PLANE ].i_bytes = p_pic->i_size * sizeof( u8 );
 606             p_pic->planes[ Y_PLANE ].i_line_bytes = i_width * sizeof( u8 );
 607
 608             p_pic->planes[ U_PLANE ].p_data = p_pic->p_sys->p_overlay->pixels[ 2 ];
 609             p_pic->planes[ U_PLANE ].i_bytes = p_pic->i_size * sizeof( u8 ) / 4;
 610             p_pic->planes[ U_PLANE ].i_line_bytes = p_pic->i_chroma_width * sizeof( u8 );
 611
 612             p_pic->planes[ V_PLANE ].p_data = p_pic->p_sys->p_overlay->pixels[ 1 ];
 613             p_pic->planes[ V_PLANE ].i_bytes = p_pic->i_size * sizeof( u8 ) / 4;
 614             p_pic->planes[ V_PLANE ].i_line_bytes = p_pic->i_chroma_width * sizeof( u8 );
 615
 616             p_pic->i_planes = 3;
 617
 618             return 0;
 619
 620         default:
 621             /* Unknown chroma, tell the guy to get lost */
 622             p_pic->i_planes = 0;
 623
 624             return 0;
 625     }
 626 }
 627