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 1.8 2003/02/10 23:16:37 marcari 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 #include <vlc/aout.h>
  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 "aout_internal.h"
  46 #include "netutils.h"
  47
  48 #define SDL_MAX_DIRECTBUFFERS 10
  49 #define SDL_DEFAULT_BPP 16
  50
  51 /*****************************************************************************
  52  * vout_sys_t: video output SDL method descriptor
  53  *****************************************************************************
  54  * This structure is part of the video output thread descriptor.
  55  * It describes the SDL specific properties of an output thread.
  56  *****************************************************************************/
  57 struct vout_sys_t
  58 {
  59     SDL_Surface *   p_display;                             /* display device */
  60
  61     int i_width;
  62     int i_height;
  63
  64     /* For YUV output */
  65     SDL_Overlay * p_overlay;   /* An overlay we keep to grab the XVideo port */
  66
  67     /* For RGB output */
  68     int i_surfaces;
  69
  70     vlc_bool_t  b_cursor;
  71     vlc_bool_t  b_cursor_autohidden;
  72     mtime_t     i_lastmoved;
  73     mtime_t     i_lastpressed;                        /* to track dbl-clicks */
  74 };
  75
  76 /*****************************************************************************
  77  * picture_sys_t: direct buffer method descriptor
  78  *****************************************************************************
  79  * This structure is part of the picture descriptor, it describes the
  80  * SDL specific properties of a direct buffer.
  81  *****************************************************************************/
  82 struct picture_sys_t
  83 {
  84     SDL_Overlay *p_overlay;
  85 };
  86
  87 /*****************************************************************************
  88  * Local prototypes
  89  *****************************************************************************/
  90 static int  Open      ( vlc_object_t * );
  91 static void Close     ( vlc_object_t * );
  92 static int  Init      ( vout_thread_t * );
  93 static void End       ( vout_thread_t * );
  94 static int  Manage    ( vout_thread_t * );
  95 static void Display   ( vout_thread_t *, picture_t * );
  96
  97 static int  OpenDisplay     ( vout_thread_t * );
  98 static void CloseDisplay    ( vout_thread_t * );
  99 static int  NewPicture      ( vout_thread_t *, picture_t * );
 100 static void SetPalette      ( vout_thread_t *,
 101                               uint16_t *, uint16_t *, uint16_t * );
 102
 103 /*****************************************************************************
 104  * Module descriptor
 105  *****************************************************************************/
 106 vlc_module_begin();
 107     set_description( _("Simple DirectMedia Layer video module") );
 108     set_capability( "video output", 60 );
 109     add_shortcut( "sdl" );
 110     set_callbacks( Open, Close );
 111     /* XXX: check for conflicts with the SDL audio output */
 112     var_Create( p_module->p_libvlc, "sdl", VLC_VAR_MUTEX );
 113 vlc_module_end();
 114
 115 /*****************************************************************************
 116  * OpenVideo: allocate SDL video thread output method
 117  *****************************************************************************
 118  * This function allocate and initialize a SDL vout method. It uses some of the
 119  * vout properties to choose the correct mode, and change them according to the
 120  * mode actually used.
 121  *****************************************************************************/
 122 static int Open ( vlc_object_t *p_this )
 123 {
 124     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 125     vlc_value_t lockval;
 126
 127 #ifdef HAVE_SETENV
 128     char *psz_method;
 129 #endif
 130
 131     var_Get( p_this->p_libvlc, "sdl", &lockval );
 132     vlc_mutex_lock( lockval.p_address );
 133
 134     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 135     {
 136         vlc_mutex_unlock( lockval.p_address );
 137         return VLC_EGENERIC;
 138     }
 139
 140     /* Allocate structure */
 141     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 142     if( p_vout->p_sys == NULL )
 143     {
 144         msg_Err( p_vout, "out of memory" );
 145         vlc_mutex_unlock( lockval.p_address );
 146         return VLC_ENOMEM;
 147     }
 148
 149     p_vout->pf_init = Init;
 150     p_vout->pf_end = End;
 151     p_vout->pf_manage = Manage;
 152     p_vout->pf_render = NULL;
 153     p_vout->pf_display = Display;
 154
 155 #ifdef HAVE_SETENV
 156     psz_method = config_GetPsz( p_vout, "vout" );
 157     if( psz_method )
 158     {
 159         while( *psz_method && *psz_method != ':' )
 160         {
 161             psz_method++;
 162         }
 163
 164         if( *psz_method )
 165         {
 166             setenv( "SDL_VIDEODRIVER", psz_method + 1, 1 );
 167         }
 168     }
 169 #endif
 170
 171     /* Initialize library */
 172     if( SDL_Init( SDL_INIT_VIDEO
 173 #ifndef WIN32
 174     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 175                 | SDL_INIT_EVENTTHREAD
 176 #endif
 177 #ifdef DEBUG
 178     /* In debug mode you may want vlc to dump a core instead of staying
 179      * stuck */
 180                 | SDL_INIT_NOPARACHUTE
 181 #endif
 182                 ) < 0 )
 183     {
 184         msg_Err( p_vout, "cannot initialize SDL (%s)", SDL_GetError() );
 185         free( p_vout->p_sys );
 186         vlc_mutex_unlock( lockval.p_address );
 187         return VLC_EGENERIC;
 188     }
 189
 190     vlc_mutex_unlock( lockval.p_address );
 191
 192     p_vout->p_sys->b_cursor = 1;
 193     p_vout->p_sys->b_cursor_autohidden = 0;
 194     p_vout->p_sys->i_lastmoved = mdate();
 195
 196     if( OpenDisplay( p_vout ) )
 197     {
 198         msg_Err( p_vout, "cannot set up SDL (%s)", SDL_GetError() );
 199         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 200         free( p_vout->p_sys );
 201         return( 1 );
 202     }
 203
 204     return( 0 );
 205 }
 206
 207 /*****************************************************************************
 208  * Init: initialize SDL video thread output method
 209  *****************************************************************************
 210  * This function initialize the SDL display device.
 211  *****************************************************************************/
 212 static int Init( vout_thread_t *p_vout )
 213 {
 214     int i_index;
 215     picture_t *p_pic;
 216
 217     p_vout->p_sys->i_surfaces = 0;
 218
 219     I_OUTPUTPICTURES = 0;
 220
 221     /* Initialize the output structure */
 222     if( p_vout->p_sys->p_overlay == NULL )
 223     {
 224         /* All we have is an RGB image with square pixels */
 225         p_vout->output.i_width  = p_vout->p_sys->i_width;
 226         p_vout->output.i_height = p_vout->p_sys->i_height;
 227         p_vout->output.i_aspect = p_vout->output.i_width
 228                                    * VOUT_ASPECT_FACTOR
 229                                    / p_vout->output.i_height;
 230     }
 231     else
 232     {
 233         /* We may need to convert the chroma, but at least we keep the
 234          * aspect ratio */
 235         p_vout->output.i_width  = p_vout->render.i_width;
 236         p_vout->output.i_height = p_vout->render.i_height;
 237         p_vout->output.i_aspect = p_vout->render.i_aspect;
 238     }
 239
 240     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 241     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 242     {
 243         p_pic = NULL;
 244
 245         /* Find an empty picture slot */
 246         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 247         {
 248             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 249             {
 250                 p_pic = p_vout->p_picture + i_index;
 251                 break;
 252             }
 253         }
 254
 255         /* Allocate the picture if we found one */
 256         if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 257         {
 258             break;
 259         }
 260
 261         p_pic->i_status = DESTROYED_PICTURE;
 262         p_pic->i_type   = DIRECT_PICTURE;
 263
 264         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 265
 266         I_OUTPUTPICTURES++;
 267     }
 268
 269     return( 0 );
 270 }
 271
 272 /*****************************************************************************
 273  * End: terminate Sys video thread output method
 274  *****************************************************************************
 275  * Terminate an output method created by OpenVideo
 276  *****************************************************************************/
 277 static void End( vout_thread_t *p_vout )
 278 {
 279     int i_index;
 280
 281     /* Free the output buffers we allocated */
 282     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 283     {
 284         i_index--;
 285         if( p_vout->p_sys->p_overlay == NULL )
 286         {
 287             /* RGB picture */
 288         }
 289         else
 290         {
 291             SDL_UnlockYUVOverlay(
 292                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 293             SDL_FreeYUVOverlay(
 294                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 295         }
 296         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 297     }
 298 }
 299
 300 /*****************************************************************************
 301  * CloseVideo: destroy Sys video thread output method
 302  *****************************************************************************
 303  * Terminate an output method created by vout_SDLCreate
 304  *****************************************************************************/
 305 static void Close ( vlc_object_t *p_this )
 306 {
 307     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 308
 309     CloseDisplay( p_vout );
 310     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 311
 312     free( p_vout->p_sys );
 313 }
 314
 315 /*****************************************************************************
 316  * Manage: handle Sys events
 317  *****************************************************************************
 318  * This function should be called regularly by video output thread. It returns
 319  * a non null value if an error occured.
 320  *****************************************************************************/
 321 static int Manage( vout_thread_t *p_vout )
 322 {
 323     SDL_Event event;                                            /* SDL event */
 324     vlc_value_t val;
 325     int i_width, i_height, i_x, i_y;
 326
 327     /* Process events */
 328     while( SDL_PollEvent(&event) )
 329     {
 330         switch( event.type )
 331         {
 332         case SDL_VIDEORESIZE:                          /* Resizing of window */
 333             /* Update dimensions */
 334             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 335             p_vout->i_window_width = p_vout->p_sys->i_width = event.resize.w;
 336             p_vout->i_window_height = p_vout->p_sys->i_height = event.resize.h;
 337             break;
 338
 339         case SDL_MOUSEMOTION:
 340             vout_PlacePicture( p_vout, p_vout->p_sys->i_width,
 341                                p_vout->p_sys->i_height,
 342                                &i_x, &i_y, &i_width, &i_height );
 343
 344             val.i_int = ( event.motion.x - i_x )
 345                          * p_vout->render.i_width / i_width;
 346             var_Set( p_vout, "mouse-x", val );
 347             val.i_int = ( event.motion.y - i_y )
 348                          * p_vout->render.i_height / i_height;
 349             var_Set( p_vout, "mouse-y", val );
 350
 351             val.b_bool = VLC_TRUE;
 352             var_Set( p_vout, "mouse-moved", val );
 353
 354             if( p_vout->p_sys->b_cursor &&
 355                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 356             {
 357                 if( p_vout->p_sys->b_cursor_autohidden )
 358                 {
 359                     p_vout->p_sys->b_cursor_autohidden = 0;
 360                     SDL_ShowCursor( 1 );
 361                 }
 362                 else
 363                 {
 364                     p_vout->p_sys->i_lastmoved = mdate();
 365                 }
 366             }
 367             break;
 368
 369         case SDL_MOUSEBUTTONUP:
 370             switch( event.button.button )
 371             {
 372             case SDL_BUTTON_LEFT:
 373                 val.b_bool = VLC_TRUE;
 374                 var_Set( p_vout, "mouse-clicked", val );
 375                 break;
 376
 377             case SDL_BUTTON_RIGHT:
 378                 {
 379                     intf_thread_t *p_intf;
 380                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 381                                                       FIND_ANYWHERE );
 382                     if( p_intf )
 383                     {
 384                         p_intf->b_menu_change = 1;
 385                         vlc_object_release( p_intf );
 386                     }
 387                 }
 388                 break;
 389             }
 390             break;
 391
 392         case SDL_MOUSEBUTTONDOWN:
 393             switch( event.button.button )
 394             {
 395             case SDL_BUTTON_LEFT:
 396                 /* In this part we will eventually manage
 397                  * clicks for DVD navigation for instance. */
 398
 399                 /* detect double-clicks */
 400                 if( ( mdate() - p_vout->p_sys->i_lastpressed ) < 300000 )
 401                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 402
 403                 p_vout->p_sys->i_lastpressed = mdate();
 404                 break;
 405
 406             case 4:
 407                 input_Seek( p_vout, 15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 408                 break;
 409
 410             case 5:
 411                 input_Seek( p_vout, -15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 412                 break;
 413             }
 414             break;
 415
 416         case SDL_QUIT:
 417             p_vout->p_vlc->b_die = 1;
 418             break;
 419
 420         case SDL_KEYDOWN:                             /* if a key is pressed */
 421
 422             switch( event.key.keysym.sym )
 423             {
 424             case SDLK_ESCAPE:
 425                 if( p_vout->b_fullscreen )
 426                 {
 427                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 428                 }
 429                 else
 430                 {
 431                     p_vout->p_vlc->b_die = 1;
 432                 }
 433                 break;
 434
 435             case SDLK_q:                                             /* quit */
 436                 p_vout->p_vlc->b_die = 1;
 437                 break;
 438
 439             case SDLK_f:                             /* switch to fullscreen */
 440                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 441                 break;
 442
 443             case SDLK_c:                                 /* toggle grayscale */
 444                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 445                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 446                 break;
 447
 448             case SDLK_i:                                      /* toggle info */
 449                 p_vout->b_info = ! p_vout->b_info;
 450                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 451                 break;
 452
 453             case SDLK_s:                                   /* toggle scaling */
 454                 p_vout->b_scale = ! p_vout->b_scale;
 455                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 456                 break;
 457
 458             case SDLK_SPACE:                             /* toggle interface */
 459                 p_vout->b_interface = ! p_vout->b_interface;
 460                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 461                 break;
 462
 463             case SDLK_MENU:
 464                 {
 465                     intf_thread_t *p_intf;
 466                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 467                                                       FIND_ANYWHERE );
 468                     if( p_intf != NULL )
 469                     {
 470                         p_intf->b_menu_change = 1;
 471                         vlc_object_release( p_intf );
 472                     }
 473                 }
 474                 break;
 475
 476             case SDLK_LEFT:
 477                 input_Seek( p_vout, -5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 478                 break;
 479
 480             case SDLK_RIGHT:
 481                 input_Seek( p_vout, 5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 482                 break;
 483
 484             case SDLK_UP:
 485                 input_Seek( p_vout, 60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 486                 break;
 487
 488             case SDLK_DOWN:
 489                 input_Seek( p_vout, -60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 490                 break;
 491
 492             case SDLK_F1: network_ChannelJoin( p_vout, 1 ); break;
 493             case SDLK_F2: network_ChannelJoin( p_vout, 2 ); break;
 494             case SDLK_F3: network_ChannelJoin( p_vout, 3 ); break;
 495             case SDLK_F4: network_ChannelJoin( p_vout, 4 ); break;
 496             case SDLK_F5: network_ChannelJoin( p_vout, 5 ); break;
 497             case SDLK_F6: network_ChannelJoin( p_vout, 6 ); break;
 498             case SDLK_F7: network_ChannelJoin( p_vout, 7 ); break;
 499             case SDLK_F8: network_ChannelJoin( p_vout, 8 ); break;
 500             case SDLK_F9: network_ChannelJoin( p_vout, 9 ); break;
 501             case SDLK_F10: network_ChannelJoin( p_vout, 10 ); break;
 502             case SDLK_F11: network_ChannelJoin( p_vout, 11 ); break;
 503             case SDLK_F12: network_ChannelJoin( p_vout, 12 ); break;
 504
 505             case SDLK_b:
 506                 {
 507                     aout_instance_t * p_aout;
 508                     audio_volume_t i_volume;
 509                     p_aout = vlc_object_find( p_vout, VLC_OBJECT_AOUT,
 510                                                       FIND_ANYWHERE );
 511                     if( p_aout != NULL )
 512                     {
 513                         if ( !aout_VolumeDown( p_aout, 1, &i_volume ) )
 514                         {
 515                             msg_Dbg( p_vout, "audio volume is now %d", i_volume );
 516                         }
 517                         else
 518                         {
 519                             msg_Dbg( p_vout, "audio volume: operation not supported" );
 520                         }
 521                         vlc_object_release( (vlc_object_t *)p_aout );
 522                     }
 523                 }
 524                 break;
 525
 526             case SDLK_n:
 527                 {
 528                     aout_instance_t * p_aout;
 529                     audio_volume_t i_volume;
 530                     p_aout = vlc_object_find( p_vout, VLC_OBJECT_AOUT,
 531                                                       FIND_ANYWHERE );
 532                     if( p_aout != NULL )
 533                     {
 534                         if ( !aout_VolumeUp( p_aout, 1, &i_volume ) )
 535                         {
 536                             msg_Dbg( p_vout, "audio volume is now %d", i_volume );
 537                         }
 538                         else
 539                         {
 540                             msg_Dbg( p_vout, "audio volume: operation not supported" );
 541                         }
 542                         vlc_object_release( (vlc_object_t *)p_aout );
 543                     }
 544                 }
 545                 break;
 546
 547              default:
 548                 break;
 549             }
 550             break;
 551
 552         default:
 553             break;
 554         }
 555     }
 556
 557     /* Fullscreen change */
 558     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 559     {
 560         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 561
 562         p_vout->p_sys->b_cursor_autohidden = 0;
 563         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 564                         ! p_vout->p_sys->b_cursor_autohidden );
 565
 566         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 567         p_vout->i_changes |= VOUT_SIZE_CHANGE;
 568     }
 569
 570     /*
 571      * Size change
 572      */
 573     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 574     {
 575         msg_Dbg( p_vout, "video display resized (%dx%d)",
 576                  p_vout->p_sys->i_width, p_vout->p_sys->i_height );
 577
 578         CloseDisplay( p_vout );
 579         OpenDisplay( p_vout );
 580
 581         /* We don't need to signal the vout thread about the size change if
 582          * we can handle rescaling ourselves */
 583         if( p_vout->p_sys->p_overlay != NULL )
 584             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 585
 586     }
 587
 588     /* Pointer change */
 589     if( ! p_vout->p_sys->b_cursor_autohidden &&
 590         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 591     {
 592         /* Hide the mouse automatically */
 593         p_vout->p_sys->b_cursor_autohidden = 1;
 594         SDL_ShowCursor( 0 );
 595     }
 596
 597     return( 0 );
 598 }
 599
 600 /*****************************************************************************
 601  * Display: displays previously rendered output
 602  *****************************************************************************
 603  * This function sends the currently rendered image to the display.
 604  *****************************************************************************/
 605 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 606 {
 607     int x, y, w, h;
 608     SDL_Rect disp;
 609
 610     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 611                        &x, &y, &w, &h );
 612     disp.x = x;
 613     disp.y = y;
 614     disp.w = w;
 615     disp.h = h;
 616
 617     if( p_vout->p_sys->p_overlay == NULL )
 618     {
 619         /* RGB picture */
 620         SDL_Flip( p_vout->p_sys->p_display );
 621     }
 622     else
 623     {
 624         /* Overlay picture */
 625         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 626         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 627         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 628     }
 629 }
 630
 631 /* following functions are local */
 632
 633 /*****************************************************************************
 634  * OpenDisplay: open and initialize SDL device
 635  *****************************************************************************
 636  * Open and initialize display according to preferences specified in the vout
 637  * thread fields.
 638  *****************************************************************************/
 639 static int OpenDisplay( vout_thread_t *p_vout )
 640 {
 641     Uint32 i_flags;
 642     int    i_bpp;
 643
 644     /* Set main window's size */
 645     p_vout->p_sys->i_width = p_vout->b_fullscreen ? p_vout->output.i_width :
 646                                                     p_vout->i_window_width;
 647     p_vout->p_sys->i_height = p_vout->b_fullscreen ? p_vout->output.i_height :
 648                                                      p_vout->i_window_height;
 649
 650     /* Initialize flags and cursor */
 651     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 652     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 653
 654     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 655                              SDL_DEFAULT_BPP, i_flags );
 656     if( i_bpp == 0 )
 657     {
 658         msg_Err( p_vout, "no video mode available" );
 659         return( 1 );
 660     }
 661
 662     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 663                                                  p_vout->p_sys->i_height,
 664                                                  i_bpp, i_flags );
 665
 666     if( p_vout->p_sys->p_display == NULL )
 667     {
 668         msg_Err( p_vout, "cannot set video mode" );
 669         return( 1 );
 670     }
 671
 672     SDL_LockSurface( p_vout->p_sys->p_display );
 673
 674     /* Choose the chroma we will try first. */
 675     switch( p_vout->render.i_chroma )
 676     {
 677         case VLC_FOURCC('Y','U','Y','2'):
 678         case VLC_FOURCC('Y','U','N','V'):
 679             p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 680             break;
 681         case VLC_FOURCC('U','Y','V','Y'):
 682         case VLC_FOURCC('U','Y','N','V'):
 683         case VLC_FOURCC('Y','4','2','2'):
 684             p_vout->output.i_chroma = SDL_UYVY_OVERLAY;
 685             break;
 686         case VLC_FOURCC('Y','V','Y','U'):
 687             p_vout->output.i_chroma = SDL_YVYU_OVERLAY;
 688             break;
 689         case VLC_FOURCC('Y','V','1','2'):
 690         case VLC_FOURCC('I','4','2','0'):
 691         case VLC_FOURCC('I','Y','U','V'):
 692         default:
 693             p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 694             break;
 695     }
 696
 697     p_vout->p_sys->p_overlay =
 698         SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 699                               p_vout->p_sys->p_display );
 700     /* FIXME: if the first overlay we find is software, don't stop,
 701      * because we may find a hardware one later ... */
 702
 703     /* If this best choice failed, fall back to other chromas */
 704     if( p_vout->p_sys->p_overlay == NULL )
 705     {
 706         p_vout->output.i_chroma = SDL_IYUV_OVERLAY;
 707         p_vout->p_sys->p_overlay =
 708             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 709                                   p_vout->p_sys->p_display );
 710     }
 711
 712     if( p_vout->p_sys->p_overlay == NULL )
 713     {
 714         p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 715         p_vout->p_sys->p_overlay =
 716             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 717                                   p_vout->p_sys->p_display );
 718     }
 719
 720     if( p_vout->p_sys->p_overlay == NULL )
 721     {
 722         p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 723         p_vout->p_sys->p_overlay =
 724             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 725                                   p_vout->p_sys->p_display );
 726     }
 727
 728     if( p_vout->p_sys->p_overlay == NULL )
 729     {
 730         msg_Warn( p_vout, "no SDL overlay for 0x%.8x (%4.4s)",
 731                   p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma );
 732
 733         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 734         {
 735             case 8:
 736                 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 737                 p_vout->output.pf_setpalette = SetPalette;
 738                 break;
 739             case 15:
 740                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
 741                 break;
 742             case 16:
 743                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 744                 break;
 745             case 24:
 746                 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 747                 break;
 748             case 32:
 749                 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 750                 break;
 751             default:
 752                 msg_Err( p_vout, "unknown screen depth %i",
 753                          p_vout->p_sys->p_display->format->BitsPerPixel );
 754                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 755                 SDL_FreeSurface( p_vout->p_sys->p_display );
 756                 return( -1 );
 757         }
 758
 759         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
 760         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
 761         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
 762
 763         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 764                            VOUT_TITLE " (software RGB SDL output)" );
 765     }
 766     else
 767     {
 768         if( p_vout->p_sys->p_overlay->hw_overlay )
 769         {
 770             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 771                                VOUT_TITLE " (hardware YUV SDL output)" );
 772         }
 773         else
 774         {
 775             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 776                                VOUT_TITLE " (software YUV SDL output)" );
 777         }
 778     }
 779
 780     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 781
 782     return( 0 );
 783 }
 784
 785 /*****************************************************************************
 786  * CloseDisplay: close and reset SDL device
 787  *****************************************************************************
 788  * This function returns all resources allocated by OpenDisplay and restore
 789  * the original state of the device.
 790  *****************************************************************************/
 791 static void CloseDisplay( vout_thread_t *p_vout )
 792 {
 793     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 794     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 795     SDL_FreeSurface( p_vout->p_sys->p_display );
 796 }
 797
 798 /*****************************************************************************
 799  * NewPicture: allocate a picture
 800  *****************************************************************************
 801  * Returns 0 on success, -1 otherwise
 802  *****************************************************************************/
 803 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 804 {
 805     int i_width  = p_vout->output.i_width;
 806     int i_height = p_vout->output.i_height;
 807
 808     if( p_vout->p_sys->p_overlay == NULL )
 809     {
 810         /* RGB picture */
 811         if( p_vout->p_sys->i_surfaces )
 812         {
 813             /* We already allocated this surface, return */
 814             return -1;
 815         }
 816
 817         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 818
 819         if( p_pic->p_sys == NULL )
 820         {
 821             return -1;
 822         }
 823
 824         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 825         {
 826             case 8:
 827                 p_pic->p->i_pixel_pitch = 1;
 828                 break;
 829             case 15:
 830             case 16:
 831                 p_pic->p->i_pixel_pitch = 2;
 832                 break;
 833             case 24:
 834             case 32:
 835                 p_pic->p->i_pixel_pitch = 4;
 836                 break;
 837             default:
 838                 return( -1 );
 839         }
 840
 841         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 842         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 843         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 844         p_pic->p->i_visible_pitch =
 845             p_pic->p->i_pixel_pitch * p_vout->p_sys->p_display->w;
 846
 847         p_vout->p_sys->i_surfaces++;
 848
 849         p_pic->i_planes = 1;
 850     }
 851     else
 852     {
 853         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 854
 855         if( p_pic->p_sys == NULL )
 856         {
 857             return -1;
 858         }
 859
 860         p_pic->p_sys->p_overlay =
 861             SDL_CreateYUVOverlay( i_width, i_height,
 862                                   p_vout->output.i_chroma,
 863                                   p_vout->p_sys->p_display );
 864
 865         if( p_pic->p_sys->p_overlay == NULL )
 866         {
 867             free( p_pic->p_sys );
 868             return -1;
 869         }
 870
 871         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 872
 873         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 874         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 875         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 876
 877         switch( p_vout->output.i_chroma )
 878         {
 879         case SDL_YV12_OVERLAY:
 880             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 881             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
 882
 883             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 884             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 885             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 886             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 887             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 888
 889             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 890             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 891             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 892             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 893             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 894
 895             p_pic->i_planes = 3;
 896             break;
 897
 898         case SDL_IYUV_OVERLAY:
 899             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 900             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
 901
 902             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 903             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 904             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 905             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 906             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 907
 908             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 909             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 910             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 911             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 912             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 913
 914             p_pic->i_planes = 3;
 915             break;
 916
 917         default:
 918             p_pic->p[Y_PLANE].i_pixel_pitch = 2;
 919             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w * 2;
 920
 921             p_pic->i_planes = 1;
 922             break;
 923         }
 924     }
 925
 926     return 0;
 927 }
 928
 929 /*****************************************************************************
 930  * SetPalette: sets an 8 bpp palette
 931  *****************************************************************************/
 932 static void SetPalette( vout_thread_t *p_vout,
 933                         uint16_t *red, uint16_t *green, uint16_t *blue )
 934 {
 935     SDL_Color colors[256];
 936     int i;
 937
 938     /* Fill colors with color information */
 939     for( i = 0; i < 256; i++ )
 940     {
 941         colors[ i ].r = red[ i ] >> 8;
 942         colors[ i ].g = green[ i ] >> 8;
 943         colors[ i ].b = blue[ i ] >> 8;
 944     }
 945
 946     /* Set palette */
 947     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 948     {
 949         msg_Err( p_vout, "failed setting palette" );
 950     }
 951 }
 952