git.sesse.net Git - vlc/blob - modules/video_output/sdl.c

   1 /*****************************************************************************
   2  * sdl.c: SDL video output display method
   3  *****************************************************************************
   4  * Copyright (C) 1998-2001 VideoLAN
   5  * $Id: sdl.c,v 1.5 2002/12/23 21:58:33 jpsaman 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  Open      ( vlc_object_t * );
  89 static void Close     ( vlc_object_t * );
  90 static int  Init      ( vout_thread_t * );
  91 static void End       ( vout_thread_t * );
  92 static int  Manage    ( vout_thread_t * );
  93 static void Display   ( vout_thread_t *, picture_t * );
  94
  95 static int  OpenDisplay     ( vout_thread_t * );
  96 static void CloseDisplay    ( vout_thread_t * );
  97 static int  NewPicture      ( vout_thread_t *, picture_t * );
  98 static void SetPalette      ( vout_thread_t *, u16 *, u16 *, u16 * );
  99
 100 /*****************************************************************************
 101  * Module descriptor
 102  *****************************************************************************/
 103 vlc_module_begin();
 104     set_description( _("Simple DirectMedia Layer video module") );
 105     set_capability( "video output", 60 );
 106     add_shortcut( "sdl" );
 107     set_callbacks( Open, Close );
 108 vlc_module_end();
 109
 110 /*****************************************************************************
 111  * OpenVideo: allocate SDL video thread output method
 112  *****************************************************************************
 113  * This function allocate and initialize a SDL vout method. It uses some of the
 114  * vout properties to choose the correct mode, and change them according to the
 115  * mode actually used.
 116  *****************************************************************************/
 117 static int Open ( vlc_object_t *p_this )
 118 {
 119     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 120
 121 #ifdef HAVE_SETENV
 122     char *psz_method;
 123 #endif
 124
 125     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 126     {
 127         return( 1 );
 128     }
 129
 130     /* Allocate structure */
 131     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 132     if( p_vout->p_sys == NULL )
 133     {
 134         msg_Err( p_vout, "out of memory" );
 135         return( 1 );
 136     }
 137
 138     p_vout->pf_init = Init;
 139     p_vout->pf_end = End;
 140     p_vout->pf_manage = Manage;
 141     p_vout->pf_render = NULL;
 142     p_vout->pf_display = Display;
 143
 144 #ifdef HAVE_SETENV
 145     psz_method = config_GetPsz( p_vout, "vout" );
 146     if( psz_method )
 147     {
 148         while( *psz_method && *psz_method != ':' )
 149         {
 150             psz_method++;
 151         }
 152
 153         if( *psz_method )
 154         {
 155             setenv( "SDL_VIDEODRIVER", psz_method + 1, 1 );
 156         }
 157     }
 158 #endif
 159
 160     /* Initialize library */
 161     if( SDL_Init( SDL_INIT_VIDEO
 162 #ifndef WIN32
 163     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 164                 | SDL_INIT_EVENTTHREAD
 165 #endif
 166 #ifdef DEBUG
 167     /* In debug mode you may want vlc to dump a core instead of staying
 168      * stuck */
 169                 | SDL_INIT_NOPARACHUTE
 170 #endif
 171                 ) < 0 )
 172     {
 173         msg_Err( p_vout, "cannot initialize SDL (%s)", SDL_GetError() );
 174         free( p_vout->p_sys );
 175         return( 1 );
 176     }
 177
 178     p_vout->p_sys->b_cursor = 1;
 179     p_vout->p_sys->b_cursor_autohidden = 0;
 180     p_vout->p_sys->i_lastmoved = mdate();
 181
 182     if( OpenDisplay( p_vout ) )
 183     {
 184         msg_Err( p_vout, "cannot set up SDL (%s)", SDL_GetError() );
 185         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 186         free( p_vout->p_sys );
 187         return( 1 );
 188     }
 189
 190     return( 0 );
 191 }
 192
 193 /*****************************************************************************
 194  * Init: initialize SDL video thread output method
 195  *****************************************************************************
 196  * This function initialize the SDL display device.
 197  *****************************************************************************/
 198 static int Init( vout_thread_t *p_vout )
 199 {
 200     int i_index;
 201     picture_t *p_pic;
 202
 203     p_vout->p_sys->i_surfaces = 0;
 204
 205     I_OUTPUTPICTURES = 0;
 206
 207     /* Initialize the output structure */
 208     if( p_vout->p_sys->p_overlay == NULL )
 209     {
 210         /* All we have is an RGB image with square pixels */
 211         p_vout->output.i_width  = p_vout->p_sys->i_width;
 212         p_vout->output.i_height = p_vout->p_sys->i_height;
 213         p_vout->output.i_aspect = p_vout->output.i_width
 214                                    * VOUT_ASPECT_FACTOR
 215                                    / p_vout->output.i_height;
 216     }
 217     else
 218     {
 219         /* We may need to convert the chroma, but at least we keep the
 220          * aspect ratio */
 221         p_vout->output.i_width  = p_vout->render.i_width;
 222         p_vout->output.i_height = p_vout->render.i_height;
 223         p_vout->output.i_aspect = p_vout->render.i_aspect;
 224     }
 225
 226     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 227     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 228     {
 229         p_pic = NULL;
 230
 231         /* Find an empty picture slot */
 232         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 233         {
 234             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 235             {
 236                 p_pic = p_vout->p_picture + i_index;
 237                 break;
 238             }
 239         }
 240
 241         /* Allocate the picture if we found one */
 242         if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 243         {
 244             break;
 245         }
 246
 247         p_pic->i_status = DESTROYED_PICTURE;
 248         p_pic->i_type   = DIRECT_PICTURE;
 249
 250         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 251
 252         I_OUTPUTPICTURES++;
 253     }
 254
 255     return( 0 );
 256 }
 257
 258 /*****************************************************************************
 259  * End: terminate Sys video thread output method
 260  *****************************************************************************
 261  * Terminate an output method created by OpenVideo
 262  *****************************************************************************/
 263 static void End( vout_thread_t *p_vout )
 264 {
 265     int i_index;
 266
 267     /* Free the output buffers we allocated */
 268     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 269     {
 270         i_index--;
 271         if( p_vout->p_sys->p_overlay == NULL )
 272         {
 273             /* RGB picture */
 274         }
 275         else
 276         {
 277             SDL_UnlockYUVOverlay(
 278                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 279             SDL_FreeYUVOverlay(
 280                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 281         }
 282         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 283     }
 284 }
 285
 286 /*****************************************************************************
 287  * CloseVideo: destroy Sys video thread output method
 288  *****************************************************************************
 289  * Terminate an output method created by vout_SDLCreate
 290  *****************************************************************************/
 291 static void Close ( vlc_object_t *p_this )
 292 {
 293     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 294
 295     CloseDisplay( p_vout );
 296     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 297
 298     free( p_vout->p_sys );
 299 }
 300
 301 /*****************************************************************************
 302  * Manage: handle Sys events
 303  *****************************************************************************
 304  * This function should be called regularly by video output thread. It returns
 305  * a non null value if an error occured.
 306  *****************************************************************************/
 307 static int Manage( vout_thread_t *p_vout )
 308 {
 309     SDL_Event event;                                            /* SDL event */
 310     vlc_value_t val;
 311     int i_width, i_height, i_x, i_y;
 312
 313     /* Process events */
 314     while( SDL_PollEvent(&event) )
 315     {
 316         switch( event.type )
 317         {
 318         case SDL_VIDEORESIZE:                          /* Resizing of window */
 319             /* Update dimensions */
 320             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 321             p_vout->i_window_width = p_vout->p_sys->i_width = event.resize.w;
 322             p_vout->i_window_height = p_vout->p_sys->i_height = event.resize.h;
 323             break;
 324
 325         case SDL_MOUSEMOTION:
 326             vout_PlacePicture( p_vout, p_vout->p_sys->i_width,
 327                                p_vout->p_sys->i_height,
 328                                &i_x, &i_y, &i_width, &i_height );
 329
 330             val.i_int = ( event.motion.x - i_x )
 331                          * p_vout->render.i_width / i_width;
 332             var_Set( p_vout, "mouse-x", val );
 333             val.i_int = ( event.motion.y - i_y )
 334                          * p_vout->render.i_height / i_height;
 335             var_Set( p_vout, "mouse-y", val );
 336
 337             val.b_bool = VLC_TRUE;
 338             var_Set( p_vout, "mouse-moved", val );
 339
 340             if( p_vout->p_sys->b_cursor &&
 341                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 342             {
 343                 if( p_vout->p_sys->b_cursor_autohidden )
 344                 {
 345                     p_vout->p_sys->b_cursor_autohidden = 0;
 346                     SDL_ShowCursor( 1 );
 347                 }
 348                 else
 349                 {
 350                     p_vout->p_sys->i_lastmoved = mdate();
 351                 }
 352             }
 353             break;
 354
 355         case SDL_MOUSEBUTTONUP:
 356             switch( event.button.button )
 357             {
 358             case SDL_BUTTON_LEFT:
 359                 val.b_bool = VLC_TRUE;
 360                 var_Set( p_vout, "mouse-clicked", val );
 361                 break;
 362
 363             case SDL_BUTTON_RIGHT:
 364                 {
 365                     intf_thread_t *p_intf;
 366                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 367                                                       FIND_ANYWHERE );
 368                     if( p_intf )
 369                     {
 370                         p_intf->b_menu_change = 1;
 371                         vlc_object_release( p_intf );
 372                     }
 373                 }
 374                 break;
 375             }
 376             break;
 377
 378         case SDL_MOUSEBUTTONDOWN:
 379             switch( event.button.button )
 380             {
 381             case SDL_BUTTON_LEFT:
 382                 /* In this part we will eventually manage
 383                  * clicks for DVD navigation for instance. */
 384
 385                 /* detect double-clicks */
 386                 if( ( mdate() - p_vout->p_sys->i_lastpressed ) < 300000 )
 387                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 388
 389                 p_vout->p_sys->i_lastpressed = mdate();
 390                 break;
 391
 392             case 4:
 393                 input_Seek( p_vout, 15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 394                 break;
 395
 396             case 5:
 397                 input_Seek( p_vout, -15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 398                 break;
 399             }
 400             break;
 401
 402         case SDL_QUIT:
 403             p_vout->p_vlc->b_die = 1;
 404             break;
 405
 406         case SDL_KEYDOWN:                             /* if a key is pressed */
 407
 408             switch( event.key.keysym.sym )
 409             {
 410             case SDLK_ESCAPE:
 411                 if( p_vout->b_fullscreen )
 412                 {
 413                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 414                 }
 415                 else
 416                 {
 417                     p_vout->p_vlc->b_die = 1;
 418                 }
 419                 break;
 420
 421             case SDLK_q:                                             /* quit */
 422                 p_vout->p_vlc->b_die = 1;
 423                 break;
 424
 425             case SDLK_f:                             /* switch to fullscreen */
 426                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 427                 break;
 428
 429             case SDLK_c:                                 /* toggle grayscale */
 430                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 431                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 432                 break;
 433
 434             case SDLK_i:                                      /* toggle info */
 435                 p_vout->b_info = ! p_vout->b_info;
 436                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 437                 break;
 438
 439             case SDLK_s:                                   /* toggle scaling */
 440                 p_vout->b_scale = ! p_vout->b_scale;
 441                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 442                 break;
 443
 444             case SDLK_SPACE:                             /* toggle interface */
 445                 p_vout->b_interface = ! p_vout->b_interface;
 446                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 447                 break;
 448
 449             case SDLK_MENU:
 450                 {
 451                     intf_thread_t *p_intf;
 452                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 453                                                       FIND_ANYWHERE );
 454                     if( p_intf != NULL )
 455                     {
 456                         p_intf->b_menu_change = 1;
 457                         vlc_object_release( p_intf );
 458                     }
 459                 }
 460                 break;
 461
 462             case SDLK_LEFT:
 463                 input_Seek( p_vout, -5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 464                 break;
 465
 466             case SDLK_RIGHT:
 467                 input_Seek( p_vout, 5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 468                 break;
 469
 470             case SDLK_UP:
 471                 input_Seek( p_vout, 60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 472                 break;
 473
 474             case SDLK_DOWN:
 475                 input_Seek( p_vout, -60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 476                 break;
 477
 478             case SDLK_F1: network_ChannelJoin( p_vout, 1 ); break;
 479             case SDLK_F2: network_ChannelJoin( p_vout, 2 ); break;
 480             case SDLK_F3: network_ChannelJoin( p_vout, 3 ); break;
 481             case SDLK_F4: network_ChannelJoin( p_vout, 4 ); break;
 482             case SDLK_F5: network_ChannelJoin( p_vout, 5 ); break;
 483             case SDLK_F6: network_ChannelJoin( p_vout, 6 ); break;
 484             case SDLK_F7: network_ChannelJoin( p_vout, 7 ); break;
 485             case SDLK_F8: network_ChannelJoin( p_vout, 8 ); break;
 486             case SDLK_F9: network_ChannelJoin( p_vout, 9 ); break;
 487             case SDLK_F10: network_ChannelJoin( p_vout, 10 ); break;
 488             case SDLK_F11: network_ChannelJoin( p_vout, 11 ); break;
 489             case SDLK_F12: network_ChannelJoin( p_vout, 12 ); break;
 490
 491             case SDLK_b:
 492                 {
 493                     aout_instance_t * p_aout;
 494                     audio_volume_t i_volume;
 495                     p_aout = vlc_object_find( p_vout, VLC_OBJECT_AOUT,
 496                                                       FIND_ANYWHERE );
 497                     if( p_aout != NULL )
 498                     {
 499                         if ( !aout_VolumeDown( p_aout, 1, &i_volume ) )
 500                         {
 501                             msg_Dbg( p_vout, "audio volume is now %d", i_volume );
 502                         }
 503                         else
 504                         {
 505                             msg_Dbg( p_vout, "audio volume: operation not supported" );
 506                         }
 507                         vlc_object_release( (vlc_object_t *)p_aout );
 508                     }
 509                 }
 510                 break;
 511
 512             case SDLK_n:
 513                 {
 514                     aout_instance_t * p_aout;
 515                     audio_volume_t i_volume;
 516                     p_aout = vlc_object_find( p_vout, VLC_OBJECT_AOUT,
 517                                                       FIND_ANYWHERE );
 518                     if( p_aout != NULL )
 519                     {
 520                         if ( !aout_VolumeUp( p_aout, 1, &i_volume ) )
 521                         {
 522                             msg_Dbg( p_vout, "audio volume is now %d", i_volume );
 523                         }
 524                         else
 525                         {
 526                             msg_Dbg( p_vout, "audio volume: operation not supported" );
 527                         }
 528                         vlc_object_release( (vlc_object_t *)p_aout );
 529                     }
 530                 }
 531                 break;
 532
 533              default:
 534                 break;
 535             }
 536             break;
 537
 538         default:
 539             break;
 540         }
 541     }
 542
 543     /* Fullscreen change */
 544     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 545     {
 546         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 547
 548         p_vout->p_sys->b_cursor_autohidden = 0;
 549         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 550                         ! p_vout->p_sys->b_cursor_autohidden );
 551
 552         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 553         p_vout->i_changes |= VOUT_SIZE_CHANGE;
 554     }
 555
 556     /*
 557      * Size change
 558      */
 559     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 560     {
 561         msg_Dbg( p_vout, "video display resized (%dx%d)",
 562                  p_vout->p_sys->i_width, p_vout->p_sys->i_height );
 563
 564         CloseDisplay( p_vout );
 565         OpenDisplay( p_vout );
 566
 567         /* We don't need to signal the vout thread about the size change if
 568          * we can handle rescaling ourselves */
 569         if( p_vout->p_sys->p_overlay != NULL )
 570             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 571
 572     }
 573
 574     /* Pointer change */
 575     if( ! p_vout->p_sys->b_cursor_autohidden &&
 576         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 577     {
 578         /* Hide the mouse automatically */
 579         p_vout->p_sys->b_cursor_autohidden = 1;
 580         SDL_ShowCursor( 0 );
 581     }
 582
 583     return( 0 );
 584 }
 585
 586 /*****************************************************************************
 587  * Display: displays previously rendered output
 588  *****************************************************************************
 589  * This function sends the currently rendered image to the display.
 590  *****************************************************************************/
 591 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 592 {
 593     int x, y, w, h;
 594     SDL_Rect disp;
 595
 596     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 597                        &x, &y, &w, &h );
 598     disp.x = x;
 599     disp.y = y;
 600     disp.w = w;
 601     disp.h = h;
 602
 603     if( p_vout->p_sys->p_overlay == NULL )
 604     {
 605         /* RGB picture */
 606         SDL_Flip( p_vout->p_sys->p_display );
 607     }
 608     else
 609     {
 610         /* Overlay picture */
 611         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 612         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 613         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 614     }
 615 }
 616
 617 /* following functions are local */
 618
 619 /*****************************************************************************
 620  * OpenDisplay: open and initialize SDL device
 621  *****************************************************************************
 622  * Open and initialize display according to preferences specified in the vout
 623  * thread fields.
 624  *****************************************************************************/
 625 static int OpenDisplay( vout_thread_t *p_vout )
 626 {
 627     Uint32 i_flags;
 628     int    i_bpp;
 629
 630     /* Set main window's size */
 631     p_vout->p_sys->i_width = p_vout->b_fullscreen ? p_vout->output.i_width :
 632                                                     p_vout->i_window_width;
 633     p_vout->p_sys->i_height = p_vout->b_fullscreen ? p_vout->output.i_height :
 634                                                      p_vout->i_window_height;
 635
 636     /* Initialize flags and cursor */
 637     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 638     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 639
 640     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 641                              SDL_DEFAULT_BPP, i_flags );
 642     if( i_bpp == 0 )
 643     {
 644         msg_Err( p_vout, "no video mode available" );
 645         return( 1 );
 646     }
 647
 648     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 649                                                  p_vout->p_sys->i_height,
 650                                                  i_bpp, i_flags );
 651
 652     if( p_vout->p_sys->p_display == NULL )
 653     {
 654         msg_Err( p_vout, "cannot set video mode" );
 655         return( 1 );
 656     }
 657
 658     SDL_LockSurface( p_vout->p_sys->p_display );
 659
 660     /* Choose the chroma we will try first. */
 661     switch( p_vout->render.i_chroma )
 662     {
 663         case VLC_FOURCC('Y','U','Y','2'):
 664         case VLC_FOURCC('Y','U','N','V'):
 665             p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 666             break;
 667         case VLC_FOURCC('U','Y','V','Y'):
 668         case VLC_FOURCC('U','Y','N','V'):
 669         case VLC_FOURCC('Y','4','2','2'):
 670             p_vout->output.i_chroma = SDL_UYVY_OVERLAY;
 671             break;
 672         case VLC_FOURCC('Y','V','Y','U'):
 673             p_vout->output.i_chroma = SDL_YVYU_OVERLAY;
 674             break;
 675         case VLC_FOURCC('Y','V','1','2'):
 676         case VLC_FOURCC('I','4','2','0'):
 677         case VLC_FOURCC('I','Y','U','V'):
 678         default:
 679             p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 680             break;
 681     }
 682
 683     p_vout->p_sys->p_overlay =
 684         SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 685                               p_vout->p_sys->p_display );
 686     /* FIXME: if the first overlay we find is software, don't stop,
 687      * because we may find a hardware one later ... */
 688
 689     /* If this best choice failed, fall back to other chromas */
 690     if( p_vout->p_sys->p_overlay == NULL )
 691     {
 692         p_vout->output.i_chroma = SDL_IYUV_OVERLAY;
 693         p_vout->p_sys->p_overlay =
 694             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 695                                   p_vout->p_sys->p_display );
 696     }
 697
 698     if( p_vout->p_sys->p_overlay == NULL )
 699     {
 700         p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 701         p_vout->p_sys->p_overlay =
 702             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 703                                   p_vout->p_sys->p_display );
 704     }
 705
 706     if( p_vout->p_sys->p_overlay == NULL )
 707     {
 708         p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 709         p_vout->p_sys->p_overlay =
 710             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 711                                   p_vout->p_sys->p_display );
 712     }
 713
 714     if( p_vout->p_sys->p_overlay == NULL )
 715     {
 716         msg_Warn( p_vout, "no SDL overlay for 0x%.8x (%4.4s)",
 717                   p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma );
 718
 719         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 720         {
 721             case 8:
 722                 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 723                 p_vout->output.pf_setpalette = SetPalette;
 724                 break;
 725             case 15:
 726                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
 727                 break;
 728             case 16:
 729                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 730                 break;
 731             case 24:
 732                 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 733                 break;
 734             case 32:
 735                 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 736                 break;
 737             default:
 738                 msg_Err( p_vout, "unknown screen depth %i",
 739                          p_vout->p_sys->p_display->format->BitsPerPixel );
 740                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 741                 SDL_FreeSurface( p_vout->p_sys->p_display );
 742                 return( -1 );
 743         }
 744
 745         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
 746         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
 747         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
 748
 749         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 750                            VOUT_TITLE " (software RGB SDL output)" );
 751     }
 752     else
 753     {
 754         if( p_vout->p_sys->p_overlay->hw_overlay )
 755         {
 756             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 757                                VOUT_TITLE " (hardware YUV SDL output)" );
 758         }
 759         else
 760         {
 761             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 762                                VOUT_TITLE " (software YUV SDL output)" );
 763         }
 764     }
 765
 766     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 767
 768     return( 0 );
 769 }
 770
 771 /*****************************************************************************
 772  * CloseDisplay: close and reset SDL device
 773  *****************************************************************************
 774  * This function returns all resources allocated by OpenDisplay and restore
 775  * the original state of the device.
 776  *****************************************************************************/
 777 static void CloseDisplay( vout_thread_t *p_vout )
 778 {
 779     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 780     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 781     SDL_FreeSurface( p_vout->p_sys->p_display );
 782 }
 783
 784 /*****************************************************************************
 785  * NewPicture: allocate a picture
 786  *****************************************************************************
 787  * Returns 0 on success, -1 otherwise
 788  *****************************************************************************/
 789 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 790 {
 791     int i_width  = p_vout->output.i_width;
 792     int i_height = p_vout->output.i_height;
 793
 794     if( p_vout->p_sys->p_overlay == NULL )
 795     {
 796         /* RGB picture */
 797         if( p_vout->p_sys->i_surfaces )
 798         {
 799             /* We already allocated this surface, return */
 800             return -1;
 801         }
 802
 803         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 804
 805         if( p_pic->p_sys == NULL )
 806         {
 807             return -1;
 808         }
 809
 810         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 811         {
 812             case 8:
 813                 p_pic->p->i_pixel_pitch = 1;
 814                 break;
 815             case 15:
 816             case 16:
 817                 p_pic->p->i_pixel_pitch = 2;
 818                 break;
 819             case 24:
 820             case 32:
 821                 p_pic->p->i_pixel_pitch = 4;
 822                 break;
 823             default:
 824                 return( -1 );
 825         }
 826
 827         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 828         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 829         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 830         p_pic->p->i_visible_pitch =
 831             p_pic->p->i_pixel_pitch * p_vout->p_sys->p_display->w;
 832
 833         p_vout->p_sys->i_surfaces++;
 834
 835         p_pic->i_planes = 1;
 836     }
 837     else
 838     {
 839         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 840
 841         if( p_pic->p_sys == NULL )
 842         {
 843             return -1;
 844         }
 845
 846         p_pic->p_sys->p_overlay =
 847             SDL_CreateYUVOverlay( i_width, i_height,
 848                                   p_vout->output.i_chroma,
 849                                   p_vout->p_sys->p_display );
 850
 851         if( p_pic->p_sys->p_overlay == NULL )
 852         {
 853             free( p_pic->p_sys );
 854             return -1;
 855         }
 856
 857         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 858
 859         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 860         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 861         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 862
 863         switch( p_vout->output.i_chroma )
 864         {
 865         case SDL_YV12_OVERLAY:
 866             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 867             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p[Y_PLANE].i_pitch;
 868
 869             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 870             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 871             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 872             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 873             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p[U_PLANE].i_pitch;
 874
 875             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 876             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 877             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 878             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 879             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p[V_PLANE].i_pitch;
 880
 881             p_pic->i_planes = 3;
 882             break;
 883
 884         case SDL_IYUV_OVERLAY:
 885             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 886             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p[Y_PLANE].i_pitch;
 887
 888             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 889             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 890             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 891             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 892             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p[U_PLANE].i_pitch;
 893
 894             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 895             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 896             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 897             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 898             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p[V_PLANE].i_pitch;
 899
 900             p_pic->i_planes = 3;
 901             break;
 902
 903         default:
 904             p_pic->p[Y_PLANE].i_pixel_pitch = 2;
 905             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p[Y_PLANE].i_pitch;
 906
 907             p_pic->i_planes = 1;
 908             break;
 909         }
 910     }
 911
 912     return 0;
 913 }
 914
 915 /*****************************************************************************
 916  * SetPalette: sets an 8 bpp palette
 917  *****************************************************************************/
 918 static void SetPalette( vout_thread_t *p_vout, u16 *red, u16 *green, u16 *blue )
 919 {
 920     SDL_Color colors[256];
 921     int i;
 922
 923     /* Fill colors with color information */
 924     for( i = 0; i < 256; i++ )
 925     {
 926         colors[ i ].r = red[ i ] >> 8;
 927         colors[ i ].g = green[ i ] >> 8;
 928         colors[ i ].b = blue[ i ] >> 8;
 929     }
 930
 931     /* Set palette */
 932     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 933     {
 934         msg_Err( p_vout, "failed setting palette" );
 935     }
 936 }
 937