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 1.98 2002/07/31 20:56:52 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 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #include <errno.h>                                                 /* ENOMEM */
  30 #include <stdlib.h>                                                /* free() */
  31 #include <string.h>                                            /* strerror() */
  32
  33 #include <vlc/vlc.h>
  34 #include <vlc/intf.h>
  35 #include <vlc/vout.h>
  36
  37 #include <sys/types.h>
  38 #ifndef WIN32
  39 #   include <netinet/in.h>                            /* BSD: struct in_addr */
  40 #endif
  41
  42 #include SDL_INCLUDE_FILE
  43
  44 #include "netutils.h"
  45
  46 #define SDL_MAX_DIRECTBUFFERS 10
  47 #define SDL_DEFAULT_BPP 16
  48
  49 /*****************************************************************************
  50  * vout_sys_t: video output SDL method descriptor
  51  *****************************************************************************
  52  * This structure is part of the video output thread descriptor.
  53  * It describes the SDL specific properties of an output thread.
  54  *****************************************************************************/
  55 struct vout_sys_t
  56 {
  57     SDL_Surface *   p_display;                             /* display device */
  58
  59     int i_width;
  60     int i_height;
  61
  62     /* For YUV output */
  63     SDL_Overlay * p_overlay;   /* An overlay we keep to grab the XVideo port */
  64
  65     /* For RGB output */
  66     int i_surfaces;
  67
  68     vlc_bool_t  b_cursor;
  69     vlc_bool_t  b_cursor_autohidden;
  70     mtime_t     i_lastmoved;
  71     mtime_t     i_lastpressed;                        /* to track dbl-clicks */
  72 };
  73
  74 /*****************************************************************************
  75  * picture_sys_t: direct buffer method descriptor
  76  *****************************************************************************
  77  * This structure is part of the picture descriptor, it describes the
  78  * SDL specific properties of a direct buffer.
  79  *****************************************************************************/
  80 struct picture_sys_t
  81 {
  82     SDL_Overlay *p_overlay;
  83 };
  84
  85 /*****************************************************************************
  86  * Local prototypes
  87  *****************************************************************************/
  88 static int  Init      ( vout_thread_t * );
  89 static void End       ( vout_thread_t * );
  90 static int  Manage    ( vout_thread_t * );
  91 static void Display   ( vout_thread_t *, picture_t * );
  92
  93 static int  OpenDisplay     ( vout_thread_t * );
  94 static void CloseDisplay    ( vout_thread_t * );
  95 static int  NewPicture      ( vout_thread_t *, picture_t * );
  96 static void SetPalette      ( vout_thread_t *, u16 *, u16 *, u16 * );
  97
  98 /*****************************************************************************
  99  * OpenVideo: allocate SDL video thread output method
 100  *****************************************************************************
 101  * This function allocate and initialize a SDL vout method. It uses some of the
 102  * vout properties to choose the correct mode, and change them according to the
 103  * mode actually used.
 104  *****************************************************************************/
 105 int E_(OpenVideo) ( vlc_object_t *p_this )
 106 {
 107     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 108
 109 #ifdef HAVE_SETENV
 110     char *psz_method;
 111 #endif
 112
 113     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 114     {
 115         return( 1 );
 116     }
 117
 118     /* Allocate structure */
 119     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 120     if( p_vout->p_sys == NULL )
 121     {
 122         msg_Err( p_vout, "out of memory" );
 123         return( 1 );
 124     }
 125
 126     p_vout->pf_init = Init;
 127     p_vout->pf_end = End;
 128     p_vout->pf_manage = Manage;
 129     p_vout->pf_render = NULL;
 130     p_vout->pf_display = Display;
 131
 132 #ifdef HAVE_SETENV
 133     psz_method = config_GetPsz( p_vout, "vout" );
 134     if( psz_method )
 135     {
 136         while( *psz_method && *psz_method != ':' )
 137         {
 138             psz_method++;
 139         }
 140
 141         if( *psz_method )
 142         {
 143             setenv( "SDL_VIDEODRIVER", psz_method + 1, 1 );
 144         }
 145     }
 146 #endif
 147
 148     /* Initialize library */
 149     if( SDL_Init( SDL_INIT_VIDEO
 150 #ifndef WIN32
 151     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 152                 | SDL_INIT_EVENTTHREAD
 153 #endif
 154 #ifdef DEBUG
 155     /* In debug mode you may want vlc to dump a core instead of staying
 156      * stuck */
 157                 | SDL_INIT_NOPARACHUTE
 158 #endif
 159                 ) < 0 )
 160     {
 161         msg_Err( p_vout, "cannot initialize SDL (%s)", SDL_GetError() );
 162         free( p_vout->p_sys );
 163         return( 1 );
 164     }
 165
 166     p_vout->p_sys->b_cursor = 1;
 167     p_vout->p_sys->b_cursor_autohidden = 0;
 168     p_vout->p_sys->i_lastmoved = mdate();
 169
 170     if( OpenDisplay( p_vout ) )
 171     {
 172         msg_Err( p_vout, "cannot set up SDL (%s)", SDL_GetError() );
 173         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 174         free( p_vout->p_sys );
 175         return( 1 );
 176     }
 177
 178     return( 0 );
 179 }
 180
 181 /*****************************************************************************
 182  * Init: initialize SDL video thread output method
 183  *****************************************************************************
 184  * This function initialize the SDL display device.
 185  *****************************************************************************/
 186 static int Init( vout_thread_t *p_vout )
 187 {
 188     int i_index;
 189     picture_t *p_pic;
 190
 191     p_vout->p_sys->i_surfaces = 0;
 192
 193     I_OUTPUTPICTURES = 0;
 194
 195     /* Initialize the output structure */
 196     if( p_vout->p_sys->p_overlay == NULL )
 197     {
 198         /* All we have is an RGB image with square pixels */
 199         p_vout->output.i_width  = p_vout->p_sys->i_width;
 200         p_vout->output.i_height = p_vout->p_sys->i_height;
 201         p_vout->output.i_aspect = p_vout->output.i_width
 202                                    * VOUT_ASPECT_FACTOR
 203                                    / p_vout->output.i_height;
 204     }
 205     else
 206     {
 207         /* We may need to convert the chroma, but at least we keep the
 208          * aspect ratio */
 209         p_vout->output.i_width  = p_vout->render.i_width;
 210         p_vout->output.i_height = p_vout->render.i_height;
 211         p_vout->output.i_aspect = p_vout->render.i_aspect;
 212     }
 213
 214     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 215     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 216     {
 217         p_pic = NULL;
 218
 219         /* Find an empty picture slot */
 220         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 221         {
 222             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 223             {
 224                 p_pic = p_vout->p_picture + i_index;
 225                 break;
 226             }
 227         }
 228
 229         /* Allocate the picture if we found one */
 230         if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 231         {
 232             break;
 233         }
 234
 235         p_pic->i_status = DESTROYED_PICTURE;
 236         p_pic->i_type   = DIRECT_PICTURE;
 237
 238         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 239
 240         I_OUTPUTPICTURES++;
 241     }
 242
 243     return( 0 );
 244 }
 245
 246 /*****************************************************************************
 247  * End: terminate Sys video thread output method
 248  *****************************************************************************
 249  * Terminate an output method created by OpenVideo
 250  *****************************************************************************/
 251 static void End( vout_thread_t *p_vout )
 252 {
 253     int i_index;
 254
 255     /* Free the output buffers we allocated */
 256     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 257     {
 258         i_index--;
 259         if( p_vout->p_sys->p_overlay == NULL )
 260         {
 261             /* RGB picture */
 262         }
 263         else
 264         {
 265             SDL_UnlockYUVOverlay(
 266                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 267             SDL_FreeYUVOverlay(
 268                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 269         }
 270         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 271     }
 272 }
 273
 274 /*****************************************************************************
 275  * CloseVideo: destroy Sys video thread output method
 276  *****************************************************************************
 277  * Terminate an output method created by vout_SDLCreate
 278  *****************************************************************************/
 279 void E_(CloseVideo) ( vlc_object_t *p_this )
 280 {
 281     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 282
 283     CloseDisplay( p_vout );
 284     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 285
 286     free( p_vout->p_sys );
 287 }
 288
 289 /*****************************************************************************
 290  * Manage: handle Sys events
 291  *****************************************************************************
 292  * This function should be called regularly by video output thread. It returns
 293  * a non null value if an error occured.
 294  *****************************************************************************/
 295 static int Manage( vout_thread_t *p_vout )
 296 {
 297     SDL_Event event;                                            /* SDL event */
 298
 299     /* Process events */
 300     while( SDL_PollEvent(&event) )
 301     {
 302         switch( event.type )
 303         {
 304         case SDL_VIDEORESIZE:                          /* Resizing of window */
 305             /* Update dimensions */
 306             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 307             p_vout->i_window_width = p_vout->p_sys->i_width = event.resize.w;
 308             p_vout->i_window_height = p_vout->p_sys->i_height = event.resize.h;
 309             break;
 310
 311         case SDL_MOUSEMOTION:
 312             if( p_vout->p_sys->b_cursor &&
 313                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 314             {
 315                 if( p_vout->p_sys->b_cursor_autohidden )
 316                 {
 317                     p_vout->p_sys->b_cursor_autohidden = 0;
 318                     SDL_ShowCursor( 1 );
 319                 }
 320                 else
 321                 {
 322                     p_vout->p_sys->i_lastmoved = mdate();
 323                 }
 324             }
 325             break;
 326
 327         case SDL_MOUSEBUTTONUP:
 328             switch( event.button.button )
 329             {
 330             case SDL_BUTTON_RIGHT:
 331                 {
 332                     intf_thread_t *p_intf;
 333                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 334                                                       FIND_ANYWHERE );
 335                     if( p_intf )
 336                     {
 337                         p_intf->b_menu_change = 1;
 338                         vlc_object_release( p_intf );
 339                     }
 340                 }
 341                 break;
 342             }
 343             break;
 344
 345         case SDL_MOUSEBUTTONDOWN:
 346             switch( event.button.button )
 347             {
 348             case SDL_BUTTON_LEFT:
 349                 /* In this part we will eventually manage
 350                  * clicks for DVD navigation for instance. */
 351
 352                 /* detect double-clicks */
 353                 if( ( mdate() - p_vout->p_sys->i_lastpressed ) < 300000 )
 354                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 355
 356                 p_vout->p_sys->i_lastpressed = mdate();
 357                 break;
 358
 359             case 4:
 360                 input_Seek( p_vout, 15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 361                 break;
 362
 363             case 5:
 364                 input_Seek( p_vout, -15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 365                 break;
 366             }
 367             break;
 368
 369         case SDL_QUIT:
 370             p_vout->p_vlc->b_die = 1;
 371             break;
 372
 373         case SDL_KEYDOWN:                             /* if a key is pressed */
 374
 375             switch( event.key.keysym.sym )
 376             {
 377             case SDLK_ESCAPE:
 378                 if( p_vout->b_fullscreen )
 379                 {
 380                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 381                 }
 382                 else
 383                 {
 384                     p_vout->p_vlc->b_die = 1;
 385                 }
 386                 break;
 387
 388             case SDLK_q:                                             /* quit */
 389                 p_vout->p_vlc->b_die = 1;
 390                 break;
 391
 392             case SDLK_f:                             /* switch to fullscreen */
 393                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 394                 break;
 395
 396             case SDLK_c:                                 /* toggle grayscale */
 397                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 398                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 399                 break;
 400
 401             case SDLK_i:                                      /* toggle info */
 402                 p_vout->b_info = ! p_vout->b_info;
 403                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 404                 break;
 405
 406             case SDLK_s:                                   /* toggle scaling */
 407                 p_vout->b_scale = ! p_vout->b_scale;
 408                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 409                 break;
 410
 411             case SDLK_SPACE:                             /* toggle interface */
 412                 p_vout->b_interface = ! p_vout->b_interface;
 413                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 414                 break;
 415
 416             case SDLK_MENU:
 417                 {
 418                     intf_thread_t *p_intf;
 419                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 420                                                       FIND_ANYWHERE );
 421                     if( p_intf )
 422                     {
 423                         p_intf->b_menu_change = 1;
 424                         vlc_object_release( p_intf );
 425                     }
 426                 }
 427                 break;
 428
 429             case SDLK_LEFT:
 430                 input_Seek( p_vout, -5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 431                 break;
 432
 433             case SDLK_RIGHT:
 434                 input_Seek( p_vout, 5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 435                 break;
 436
 437             case SDLK_UP:
 438                 input_Seek( p_vout, 60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 439                 break;
 440
 441             case SDLK_DOWN:
 442                 input_Seek( p_vout, -60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 443                 break;
 444
 445             case SDLK_F1: network_ChannelJoin( p_vout, 1 ); break;
 446             case SDLK_F2: network_ChannelJoin( p_vout, 2 ); break;
 447             case SDLK_F3: network_ChannelJoin( p_vout, 3 ); break;
 448             case SDLK_F4: network_ChannelJoin( p_vout, 4 ); break;
 449             case SDLK_F5: network_ChannelJoin( p_vout, 5 ); break;
 450             case SDLK_F6: network_ChannelJoin( p_vout, 6 ); break;
 451             case SDLK_F7: network_ChannelJoin( p_vout, 7 ); break;
 452             case SDLK_F8: network_ChannelJoin( p_vout, 8 ); break;
 453             case SDLK_F9: network_ChannelJoin( p_vout, 9 ); break;
 454             case SDLK_F10: network_ChannelJoin( p_vout, 10 ); break;
 455             case SDLK_F11: network_ChannelJoin( p_vout, 11 ); break;
 456             case SDLK_F12: network_ChannelJoin( p_vout, 12 ); break;
 457
 458             default:
 459                 break;
 460             }
 461             break;
 462
 463         default:
 464             break;
 465         }
 466     }
 467
 468     /* Fullscreen change */
 469     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 470     {
 471         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 472
 473         p_vout->p_sys->b_cursor_autohidden = 0;
 474         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 475                         ! p_vout->p_sys->b_cursor_autohidden );
 476
 477         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 478         p_vout->i_changes |= VOUT_SIZE_CHANGE;
 479     }
 480
 481     /*
 482      * Size change
 483      */
 484     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 485     {
 486         msg_Dbg( p_vout, "video display resized (%dx%d)",
 487                  p_vout->p_sys->i_width, p_vout->p_sys->i_height );
 488
 489         CloseDisplay( p_vout );
 490         OpenDisplay( p_vout );
 491
 492         /* We don't need to signal the vout thread about the size change if
 493          * we can handle rescaling ourselves */
 494         if( p_vout->p_sys->p_overlay != NULL )
 495             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 496
 497     }
 498
 499     /* Pointer change */
 500     if( ! p_vout->p_sys->b_cursor_autohidden &&
 501         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 502     {
 503         /* Hide the mouse automatically */
 504         p_vout->p_sys->b_cursor_autohidden = 1;
 505         SDL_ShowCursor( 0 );
 506     }
 507
 508     return( 0 );
 509 }
 510
 511 /*****************************************************************************
 512  * Display: displays previously rendered output
 513  *****************************************************************************
 514  * This function sends the currently rendered image to the display.
 515  *****************************************************************************/
 516 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 517 {
 518     int x, y, w, h;
 519     SDL_Rect disp;
 520
 521     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 522                        &x, &y, &w, &h );
 523     disp.x = x;
 524     disp.y = y;
 525     disp.w = w;
 526     disp.h = h;
 527
 528     if( p_vout->p_sys->p_overlay == NULL )
 529     {
 530         /* RGB picture */
 531         SDL_Flip( p_vout->p_sys->p_display );
 532     }
 533     else
 534     {
 535         /* Overlay picture */
 536         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 537         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 538         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 539     }
 540 }
 541
 542 /* following functions are local */
 543
 544 /*****************************************************************************
 545  * OpenDisplay: open and initialize SDL device
 546  *****************************************************************************
 547  * Open and initialize display according to preferences specified in the vout
 548  * thread fields.
 549  *****************************************************************************/
 550 static int OpenDisplay( vout_thread_t *p_vout )
 551 {
 552     Uint32 i_flags;
 553     int    i_bpp;
 554
 555     /* Set main window's size */
 556     p_vout->p_sys->i_width = p_vout->b_fullscreen ? p_vout->output.i_width :
 557                                                     p_vout->i_window_width;
 558     p_vout->p_sys->i_height = p_vout->b_fullscreen ? p_vout->output.i_height :
 559                                                      p_vout->i_window_height;
 560
 561     /* Initialize flags and cursor */
 562     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 563     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 564
 565     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 566                              SDL_DEFAULT_BPP, i_flags );
 567     if( i_bpp == 0 )
 568     {
 569         msg_Err( p_vout, "no video mode available" );
 570         return( 1 );
 571     }
 572
 573     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 574                                                  p_vout->p_sys->i_height,
 575                                                  i_bpp, i_flags );
 576
 577     if( p_vout->p_sys->p_display == NULL )
 578     {
 579         msg_Err( p_vout, "cannot set video mode" );
 580         return( 1 );
 581     }
 582
 583     SDL_LockSurface( p_vout->p_sys->p_display );
 584
 585     /* Choose the chroma we will try first. */
 586     switch( p_vout->render.i_chroma )
 587     {
 588         case VLC_FOURCC('Y','U','Y','2'):
 589         case VLC_FOURCC('Y','U','N','V'):
 590             p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 591             break;
 592         case VLC_FOURCC('U','Y','V','Y'):
 593         case VLC_FOURCC('U','Y','N','V'):
 594         case VLC_FOURCC('Y','4','2','2'):
 595             p_vout->output.i_chroma = SDL_UYVY_OVERLAY;
 596             break;
 597         case VLC_FOURCC('Y','V','Y','U'):
 598             p_vout->output.i_chroma = SDL_YVYU_OVERLAY;
 599             break;
 600         case VLC_FOURCC('Y','V','1','2'):
 601         case VLC_FOURCC('I','4','2','0'):
 602         case VLC_FOURCC('I','Y','U','V'):
 603         default:
 604             p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 605             break;
 606     }
 607
 608     p_vout->p_sys->p_overlay =
 609         SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 610                               p_vout->p_sys->p_display );
 611     /* FIXME: if the first overlay we find is software, don't stop,
 612      * because we may find a hardware one later ... */
 613
 614     /* If this best choice failed, fall back to other chromas */
 615     if( p_vout->p_sys->p_overlay == NULL )
 616     {
 617         p_vout->output.i_chroma = SDL_IYUV_OVERLAY;
 618         p_vout->p_sys->p_overlay =
 619             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 620                                   p_vout->p_sys->p_display );
 621     }
 622
 623     if( p_vout->p_sys->p_overlay == NULL )
 624     {
 625         p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 626         p_vout->p_sys->p_overlay =
 627             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 628                                   p_vout->p_sys->p_display );
 629     }
 630
 631     if( p_vout->p_sys->p_overlay == NULL )
 632     {
 633         p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 634         p_vout->p_sys->p_overlay =
 635             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 636                                   p_vout->p_sys->p_display );
 637     }
 638
 639     if( p_vout->p_sys->p_overlay == NULL )
 640     {
 641         msg_Warn( p_vout, "no SDL overlay for 0x%.8x (%4.4s)",
 642                   p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma );
 643
 644         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 645         {
 646             case 8:
 647                 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 648                 p_vout->output.pf_setpalette = SetPalette;
 649                 break;
 650             case 15:
 651                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
 652                 break;
 653             case 16:
 654                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 655                 break;
 656             case 24:
 657                 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 658                 break;
 659             case 32:
 660                 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 661                 break;
 662             default:
 663                 msg_Err( p_vout, "unknown screen depth %i",
 664                          p_vout->p_sys->p_display->format->BitsPerPixel );
 665                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 666                 SDL_FreeSurface( p_vout->p_sys->p_display );
 667                 return( -1 );
 668         }
 669
 670         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
 671         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
 672         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
 673
 674         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 675                            VOUT_TITLE " (software RGB SDL output)" );
 676     }
 677     else
 678     {
 679         if( p_vout->p_sys->p_overlay->hw_overlay )
 680         {
 681             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 682                                VOUT_TITLE " (hardware YUV SDL output)" );
 683         }
 684         else
 685         {
 686             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 687                                VOUT_TITLE " (software YUV SDL output)" );
 688         }
 689     }
 690
 691     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 692
 693     return( 0 );
 694 }
 695
 696 /*****************************************************************************
 697  * CloseDisplay: close and reset SDL device
 698  *****************************************************************************
 699  * This function returns all resources allocated by OpenDisplay and restore
 700  * the original state of the device.
 701  *****************************************************************************/
 702 static void CloseDisplay( vout_thread_t *p_vout )
 703 {
 704     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 705     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 706     SDL_FreeSurface( p_vout->p_sys->p_display );
 707 }
 708
 709 /*****************************************************************************
 710  * NewPicture: allocate a picture
 711  *****************************************************************************
 712  * Returns 0 on success, -1 otherwise
 713  *****************************************************************************/
 714 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 715 {
 716     int i_width  = p_vout->output.i_width;
 717     int i_height = p_vout->output.i_height;
 718
 719     if( p_vout->p_sys->p_overlay == NULL )
 720     {
 721         /* RGB picture */
 722         if( p_vout->p_sys->i_surfaces )
 723         {
 724             /* We already allocated this surface, return */
 725             return -1;
 726         }
 727
 728         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 729
 730         if( p_pic->p_sys == NULL )
 731         {
 732             return -1;
 733         }
 734
 735         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 736         {
 737             case 8:
 738                 p_pic->p->i_pixel_pitch = 1;
 739                 break;
 740             case 15:
 741             case 16:
 742                 p_pic->p->i_pixel_pitch = 2;
 743                 break;
 744             case 24:
 745             case 32:
 746                 p_pic->p->i_pixel_pitch = 4;
 747                 break;
 748             default:
 749                 return( -1 );
 750         }
 751
 752         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 753         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 754         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 755         p_pic->p->i_visible_pitch =
 756             p_pic->p->i_pixel_pitch * p_vout->p_sys->p_display->w;
 757
 758         p_vout->p_sys->i_surfaces++;
 759
 760         p_pic->i_planes = 1;
 761     }
 762     else
 763     {
 764         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 765
 766         if( p_pic->p_sys == NULL )
 767         {
 768             return -1;
 769         }
 770
 771         p_pic->p_sys->p_overlay =
 772             SDL_CreateYUVOverlay( i_width, i_height,
 773                                   p_vout->output.i_chroma,
 774                                   p_vout->p_sys->p_display );
 775
 776         if( p_pic->p_sys->p_overlay == NULL )
 777         {
 778             free( p_pic->p_sys );
 779             return -1;
 780         }
 781
 782         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 783
 784         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 785         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 786         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 787
 788         switch( p_vout->output.i_chroma )
 789         {
 790         case SDL_YV12_OVERLAY:
 791             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 792             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p[Y_PLANE].i_pitch;
 793
 794             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 795             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 796             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 797             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 798             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p[U_PLANE].i_pitch;
 799
 800             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 801             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 802             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 803             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 804             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p[V_PLANE].i_pitch;
 805
 806             p_pic->i_planes = 3;
 807             break;
 808
 809         case SDL_IYUV_OVERLAY:
 810             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 811             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p[Y_PLANE].i_pitch;
 812
 813             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 814             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 815             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 816             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 817             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p[U_PLANE].i_pitch;
 818
 819             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 820             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 821             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 822             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 823             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p[V_PLANE].i_pitch;
 824
 825             p_pic->i_planes = 3;
 826             break;
 827
 828         default:
 829             p_pic->p[Y_PLANE].i_pixel_pitch = 2;
 830             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p[Y_PLANE].i_pitch;
 831
 832             p_pic->i_planes = 1;
 833             break;
 834         }
 835     }
 836
 837     return 0;
 838 }
 839
 840 /*****************************************************************************
 841  * SetPalette: sets an 8 bpp palette
 842  *****************************************************************************/
 843 static void SetPalette( vout_thread_t *p_vout, u16 *red, u16 *green, u16 *blue )
 844 {
 845     SDL_Color colors[256];
 846     int i;
 847
 848     /* Fill colors with color information */
 849     for( i = 0; i < 256; i++ )
 850     {
 851         colors[ i ].r = red[ i ] >> 8;
 852         colors[ i ].g = green[ i ] >> 8;
 853         colors[ i ].b = blue[ i ] >> 8;
 854     }
 855
 856     /* Set palette */
 857     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 858     {
 859         msg_Err( p_vout, "failed setting palette" );
 860     }
 861 }
 862