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 1.12 2003/05/04 12:40:58 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 #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 "netutils.h"
  46
  47 #define SDL_MAX_DIRECTBUFFERS 10
  48 #define SDL_DEFAULT_BPP 16
  49
  50 /*****************************************************************************
  51  * vout_sys_t: video output SDL method descriptor
  52  *****************************************************************************
  53  * This structure is part of the video output thread descriptor.
  54  * It describes the SDL specific properties of an output thread.
  55  *****************************************************************************/
  56 struct vout_sys_t
  57 {
  58     SDL_Surface *   p_display;                             /* display device */
  59
  60     int i_width;
  61     int i_height;
  62
  63     /* For YUV output */
  64     SDL_Overlay * p_overlay;   /* An overlay we keep to grab the XVideo port */
  65
  66     /* For RGB output */
  67     int i_surfaces;
  68
  69     vlc_bool_t  b_cursor;
  70     vlc_bool_t  b_cursor_autohidden;
  71     mtime_t     i_lastmoved;
  72     mtime_t     i_lastpressed;                        /* to track dbl-clicks */
  73 };
  74
  75 /*****************************************************************************
  76  * picture_sys_t: direct buffer method descriptor
  77  *****************************************************************************
  78  * This structure is part of the picture descriptor, it describes the
  79  * SDL specific properties of a direct buffer.
  80  *****************************************************************************/
  81 struct picture_sys_t
  82 {
  83     SDL_Overlay *p_overlay;
  84 };
  85
  86 /*****************************************************************************
  87  * Local prototypes
  88  *****************************************************************************/
  89 static int  Open      ( vlc_object_t * );
  90 static void Close     ( vlc_object_t * );
  91 static int  Init      ( vout_thread_t * );
  92 static void End       ( vout_thread_t * );
  93 static int  Manage    ( vout_thread_t * );
  94 static void Display   ( vout_thread_t *, picture_t * );
  95
  96 static int  OpenDisplay     ( vout_thread_t * );
  97 static void CloseDisplay    ( vout_thread_t * );
  98 static int  NewPicture      ( vout_thread_t *, picture_t * );
  99 static void SetPalette      ( vout_thread_t *,
 100                               uint16_t *, uint16_t *, uint16_t * );
 101
 102 /*****************************************************************************
 103  * Module descriptor
 104  *****************************************************************************/
 105 vlc_module_begin();
 106     set_description( _("Simple DirectMedia Layer video output") );
 107     set_capability( "video output", 60 );
 108     add_shortcut( "sdl" );
 109     set_callbacks( Open, Close );
 110     /* XXX: check for conflicts with the SDL audio output */
 111     var_Create( p_module->p_libvlc, "sdl", VLC_VAR_MUTEX );
 112 #if defined( __i386__ )
 113     /* On i386, SDL is linked against svgalib */
 114     linked_with_a_crap_library_which_uses_atexit();
 115 #endif
 116 vlc_module_end();
 117
 118 /*****************************************************************************
 119  * OpenVideo: allocate SDL video thread output method
 120  *****************************************************************************
 121  * This function allocate and initialize a SDL vout method. It uses some of the
 122  * vout properties to choose the correct mode, and change them according to the
 123  * mode actually used.
 124  *****************************************************************************/
 125 static int Open ( vlc_object_t *p_this )
 126 {
 127     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 128     vlc_value_t lockval;
 129
 130 #ifdef HAVE_SETENV
 131     char *psz_method;
 132 #endif
 133
 134     var_Get( p_this->p_libvlc, "sdl", &lockval );
 135     vlc_mutex_lock( lockval.p_address );
 136
 137     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 138     {
 139         vlc_mutex_unlock( lockval.p_address );
 140         return VLC_EGENERIC;
 141     }
 142
 143     /* Allocate structure */
 144     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 145     if( p_vout->p_sys == NULL )
 146     {
 147         msg_Err( p_vout, "out of memory" );
 148         vlc_mutex_unlock( lockval.p_address );
 149         return VLC_ENOMEM;
 150     }
 151
 152     p_vout->pf_init = Init;
 153     p_vout->pf_end = End;
 154     p_vout->pf_manage = Manage;
 155     p_vout->pf_render = NULL;
 156     p_vout->pf_display = Display;
 157
 158 #ifdef HAVE_SETENV
 159     psz_method = config_GetPsz( p_vout, "vout" );
 160     if( psz_method )
 161     {
 162         while( *psz_method && *psz_method != ':' )
 163         {
 164             psz_method++;
 165         }
 166
 167         if( *psz_method )
 168         {
 169             setenv( "SDL_VIDEODRIVER", psz_method + 1, 1 );
 170         }
 171     }
 172 #endif
 173
 174     /* Initialize library */
 175     if( SDL_Init( SDL_INIT_VIDEO
 176 #ifndef WIN32
 177     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 178                 | SDL_INIT_EVENTTHREAD
 179 #endif
 180 #ifdef DEBUG
 181     /* In debug mode you may want vlc to dump a core instead of staying
 182      * stuck */
 183                 | SDL_INIT_NOPARACHUTE
 184 #endif
 185                 ) < 0 )
 186     {
 187         msg_Err( p_vout, "cannot initialize SDL (%s)", SDL_GetError() );
 188         free( p_vout->p_sys );
 189         vlc_mutex_unlock( lockval.p_address );
 190         return VLC_EGENERIC;
 191     }
 192
 193     vlc_mutex_unlock( lockval.p_address );
 194
 195     p_vout->p_sys->b_cursor = 1;
 196     p_vout->p_sys->b_cursor_autohidden = 0;
 197     p_vout->p_sys->i_lastmoved = mdate();
 198
 199     if( OpenDisplay( p_vout ) )
 200     {
 201         msg_Err( p_vout, "cannot set up SDL (%s)", SDL_GetError() );
 202         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 203         free( p_vout->p_sys );
 204         return VLC_EGENERIC;
 205     }
 206
 207     return VLC_SUCCESS;
 208 }
 209
 210 /*****************************************************************************
 211  * Init: initialize SDL video thread output method
 212  *****************************************************************************
 213  * This function initialize the SDL display device.
 214  *****************************************************************************/
 215 static int Init( vout_thread_t *p_vout )
 216 {
 217     int i_index;
 218     picture_t *p_pic;
 219
 220     p_vout->p_sys->i_surfaces = 0;
 221
 222     I_OUTPUTPICTURES = 0;
 223
 224     /* Initialize the output structure */
 225     if( p_vout->p_sys->p_overlay == NULL )
 226     {
 227         /* All we have is an RGB image with square pixels */
 228         p_vout->output.i_width  = p_vout->p_sys->i_width;
 229         p_vout->output.i_height = p_vout->p_sys->i_height;
 230         p_vout->output.i_aspect = p_vout->output.i_width
 231                                    * VOUT_ASPECT_FACTOR
 232                                    / p_vout->output.i_height;
 233     }
 234     else
 235     {
 236         /* We may need to convert the chroma, but at least we keep the
 237          * aspect ratio */
 238         p_vout->output.i_width  = p_vout->render.i_width;
 239         p_vout->output.i_height = p_vout->render.i_height;
 240         p_vout->output.i_aspect = p_vout->render.i_aspect;
 241     }
 242
 243     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 244     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 245     {
 246         p_pic = NULL;
 247
 248         /* Find an empty picture slot */
 249         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 250         {
 251             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 252             {
 253                 p_pic = p_vout->p_picture + i_index;
 254                 break;
 255             }
 256         }
 257
 258         /* Allocate the picture if we found one */
 259         if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 260         {
 261             break;
 262         }
 263
 264         p_pic->i_status = DESTROYED_PICTURE;
 265         p_pic->i_type   = DIRECT_PICTURE;
 266
 267         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 268
 269         I_OUTPUTPICTURES++;
 270     }
 271
 272     return VLC_SUCCESS;
 273 }
 274
 275 /*****************************************************************************
 276  * End: terminate Sys video thread output method
 277  *****************************************************************************
 278  * Terminate an output method created by OpenVideo
 279  *****************************************************************************/
 280 static void End( vout_thread_t *p_vout )
 281 {
 282     int i_index;
 283
 284     /* Free the output buffers we allocated */
 285     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 286     {
 287         i_index--;
 288         if( p_vout->p_sys->p_overlay == NULL )
 289         {
 290             /* RGB picture */
 291         }
 292         else
 293         {
 294             SDL_UnlockYUVOverlay(
 295                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 296             SDL_FreeYUVOverlay(
 297                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 298         }
 299         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 300     }
 301 }
 302
 303 /*****************************************************************************
 304  * CloseVideo: destroy Sys video thread output method
 305  *****************************************************************************
 306  * Terminate an output method created by vout_SDLCreate
 307  *****************************************************************************/
 308 static void Close ( vlc_object_t *p_this )
 309 {
 310     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 311
 312     CloseDisplay( p_vout );
 313     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 314
 315     free( p_vout->p_sys );
 316 }
 317
 318 /*****************************************************************************
 319  * Manage: handle Sys events
 320  *****************************************************************************
 321  * This function should be called regularly by video output thread. It returns
 322  * a non null value if an error occured.
 323  *****************************************************************************/
 324 static int Manage( vout_thread_t *p_vout )
 325 {
 326     SDL_Event event;                                            /* SDL event */
 327     vlc_value_t val;
 328     int i_width, i_height, i_x, i_y;
 329
 330     /* Process events */
 331     while( SDL_PollEvent(&event) )
 332     {
 333         switch( event.type )
 334         {
 335         case SDL_VIDEORESIZE:                          /* Resizing of window */
 336             /* Update dimensions */
 337             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 338             p_vout->i_window_width = p_vout->p_sys->i_width = event.resize.w;
 339             p_vout->i_window_height = p_vout->p_sys->i_height = event.resize.h;
 340             break;
 341
 342         case SDL_MOUSEMOTION:
 343             vout_PlacePicture( p_vout, p_vout->p_sys->i_width,
 344                                p_vout->p_sys->i_height,
 345                                &i_x, &i_y, &i_width, &i_height );
 346
 347             val.i_int = ( event.motion.x - i_x )
 348                          * p_vout->render.i_width / i_width;
 349             var_Set( p_vout, "mouse-x", val );
 350             val.i_int = ( event.motion.y - i_y )
 351                          * p_vout->render.i_height / i_height;
 352             var_Set( p_vout, "mouse-y", val );
 353
 354             val.b_bool = VLC_TRUE;
 355             var_Set( p_vout, "mouse-moved", val );
 356
 357             if( p_vout->p_sys->b_cursor &&
 358                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 359             {
 360                 if( p_vout->p_sys->b_cursor_autohidden )
 361                 {
 362                     p_vout->p_sys->b_cursor_autohidden = 0;
 363                     SDL_ShowCursor( 1 );
 364                 }
 365                 else
 366                 {
 367                     p_vout->p_sys->i_lastmoved = mdate();
 368                 }
 369             }
 370             break;
 371
 372         case SDL_MOUSEBUTTONUP:
 373             switch( event.button.button )
 374             {
 375             case SDL_BUTTON_LEFT:
 376                 val.b_bool = VLC_TRUE;
 377                 var_Set( p_vout, "mouse-clicked", val );
 378                 break;
 379
 380             case SDL_BUTTON_RIGHT:
 381                 {
 382                     intf_thread_t *p_intf;
 383                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 384                                                       FIND_ANYWHERE );
 385                     if( p_intf )
 386                     {
 387                         p_intf->b_menu_change = 1;
 388                         vlc_object_release( p_intf );
 389                     }
 390                 }
 391                 break;
 392             }
 393             break;
 394
 395         case SDL_MOUSEBUTTONDOWN:
 396             switch( event.button.button )
 397             {
 398             case SDL_BUTTON_LEFT:
 399                 /* In this part we will eventually manage
 400                  * clicks for DVD navigation for instance. */
 401
 402                 /* detect double-clicks */
 403                 if( ( mdate() - p_vout->p_sys->i_lastpressed ) < 300000 )
 404                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 405
 406                 p_vout->p_sys->i_lastpressed = mdate();
 407                 break;
 408
 409             case 4:
 410                 input_Seek( p_vout, 15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 411                 break;
 412
 413             case 5:
 414                 input_Seek( p_vout, -15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 415                 break;
 416             }
 417             break;
 418
 419         case SDL_QUIT:
 420             p_vout->p_vlc->b_die = 1;
 421             break;
 422
 423         case SDL_KEYDOWN:                             /* if a key is pressed */
 424
 425             switch( event.key.keysym.sym )
 426             {
 427             case SDLK_ESCAPE:
 428                 if( p_vout->b_fullscreen )
 429                 {
 430                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 431                 }
 432                 else
 433                 {
 434                     p_vout->p_vlc->b_die = 1;
 435                 }
 436                 break;
 437
 438             case SDLK_q:                                             /* quit */
 439                 p_vout->p_vlc->b_die = 1;
 440                 break;
 441
 442             case SDLK_f:                             /* switch to fullscreen */
 443                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 444                 break;
 445
 446             case SDLK_c:                                 /* toggle grayscale */
 447                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 448                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 449                 break;
 450
 451             case SDLK_i:                                      /* toggle info */
 452                 p_vout->b_info = ! p_vout->b_info;
 453                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 454                 break;
 455
 456             case SDLK_s:                                   /* toggle scaling */
 457                 p_vout->b_scale = ! p_vout->b_scale;
 458                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 459                 break;
 460
 461             case SDLK_SPACE:                             /* toggle interface */
 462                 p_vout->b_interface = ! p_vout->b_interface;
 463                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 464                 break;
 465
 466             case SDLK_MENU:
 467                 {
 468                     intf_thread_t *p_intf;
 469                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 470                                                       FIND_ANYWHERE );
 471                     if( p_intf != NULL )
 472                     {
 473                         p_intf->b_menu_change = 1;
 474                         vlc_object_release( p_intf );
 475                     }
 476                 }
 477                 break;
 478
 479             case SDLK_LEFT:
 480                 input_Seek( p_vout, -5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 481                 break;
 482
 483             case SDLK_RIGHT:
 484                 input_Seek( p_vout, 5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 485                 break;
 486
 487             case SDLK_UP:
 488                 input_Seek( p_vout, 60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 489                 break;
 490
 491             case SDLK_DOWN:
 492                 input_Seek( p_vout, -60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 493                 break;
 494
 495             case SDLK_F1: network_ChannelJoin( p_vout, 1 ); break;
 496             case SDLK_F2: network_ChannelJoin( p_vout, 2 ); break;
 497             case SDLK_F3: network_ChannelJoin( p_vout, 3 ); break;
 498             case SDLK_F4: network_ChannelJoin( p_vout, 4 ); break;
 499             case SDLK_F5: network_ChannelJoin( p_vout, 5 ); break;
 500             case SDLK_F6: network_ChannelJoin( p_vout, 6 ); break;
 501             case SDLK_F7: network_ChannelJoin( p_vout, 7 ); break;
 502             case SDLK_F8: network_ChannelJoin( p_vout, 8 ); break;
 503             case SDLK_F9: network_ChannelJoin( p_vout, 9 ); break;
 504             case SDLK_F10: network_ChannelJoin( p_vout, 10 ); break;
 505             case SDLK_F11: network_ChannelJoin( p_vout, 11 ); break;
 506             case SDLK_F12: network_ChannelJoin( p_vout, 12 ); break;
 507
 508             case SDLK_b:
 509                 {
 510                     audio_volume_t i_volume;
 511                     if ( !aout_VolumeDown( p_vout, 1, &i_volume ) )
 512                     {
 513                         msg_Dbg( p_vout, "audio volume is now %d", i_volume );
 514                     }
 515                     else
 516                     {
 517                         msg_Dbg( p_vout, "audio volume: operation not supported" );
 518                     }
 519                 }
 520                 break;
 521
 522             case SDLK_n:
 523                 {
 524                     audio_volume_t i_volume;
 525                     if ( !aout_VolumeUp( p_vout, 1, &i_volume ) )
 526                     {
 527                         msg_Dbg( p_vout, "audio volume is now %d", i_volume );
 528                     }
 529                     else
 530                     {
 531                         msg_Dbg( p_vout, "audio volume: operation not supported" );
 532                     }
 533                 }
 534                 break;
 535
 536              default:
 537                 break;
 538             }
 539             break;
 540
 541         default:
 542             break;
 543         }
 544     }
 545
 546     /* Fullscreen change */
 547     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 548     {
 549         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 550
 551         p_vout->p_sys->b_cursor_autohidden = 0;
 552         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 553                         ! p_vout->p_sys->b_cursor_autohidden );
 554
 555         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 556         p_vout->i_changes |= VOUT_SIZE_CHANGE;
 557     }
 558
 559     /*
 560      * Size change
 561      */
 562     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 563     {
 564         msg_Dbg( p_vout, "video display resized (%dx%d)",
 565                  p_vout->p_sys->i_width, p_vout->p_sys->i_height );
 566
 567         CloseDisplay( p_vout );
 568         OpenDisplay( p_vout );
 569
 570         /* We don't need to signal the vout thread about the size change if
 571          * we can handle rescaling ourselves */
 572         if( p_vout->p_sys->p_overlay != NULL )
 573             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 574
 575     }
 576
 577     /* Pointer change */
 578     if( ! p_vout->p_sys->b_cursor_autohidden &&
 579         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 580     {
 581         /* Hide the mouse automatically */
 582         p_vout->p_sys->b_cursor_autohidden = 1;
 583         SDL_ShowCursor( 0 );
 584     }
 585
 586     return VLC_SUCCESS;
 587 }
 588
 589 /*****************************************************************************
 590  * Display: displays previously rendered output
 591  *****************************************************************************
 592  * This function sends the currently rendered image to the display.
 593  *****************************************************************************/
 594 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 595 {
 596     int x, y, w, h;
 597     SDL_Rect disp;
 598
 599     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 600                        &x, &y, &w, &h );
 601     disp.x = x;
 602     disp.y = y;
 603     disp.w = w;
 604     disp.h = h;
 605
 606     if( p_vout->p_sys->p_overlay == NULL )
 607     {
 608         /* RGB picture */
 609         SDL_Flip( p_vout->p_sys->p_display );
 610     }
 611     else
 612     {
 613         /* Overlay picture */
 614         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 615         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 616         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 617     }
 618 }
 619
 620 /* following functions are local */
 621
 622 /*****************************************************************************
 623  * OpenDisplay: open and initialize SDL device
 624  *****************************************************************************
 625  * Open and initialize display according to preferences specified in the vout
 626  * thread fields.
 627  *****************************************************************************/
 628 static int OpenDisplay( vout_thread_t *p_vout )
 629 {
 630     Uint32   i_flags;
 631     int      i_bpp;
 632
 633     /* SDL fucked up fourcc definitions on bigendian machines */
 634     uint32_t i_sdl_chroma;
 635
 636     /* Set main window's size */
 637     p_vout->p_sys->i_width = p_vout->b_fullscreen ? p_vout->output.i_width :
 638                                                     p_vout->i_window_width;
 639     p_vout->p_sys->i_height = p_vout->b_fullscreen ? p_vout->output.i_height :
 640                                                      p_vout->i_window_height;
 641
 642     /* Initialize flags and cursor */
 643     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 644     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 645
 646     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 647                              SDL_DEFAULT_BPP, i_flags );
 648     if( i_bpp == 0 )
 649     {
 650         msg_Err( p_vout, "no video mode available" );
 651         return VLC_EGENERIC;
 652     }
 653
 654     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 655                                                  p_vout->p_sys->i_height,
 656                                                  i_bpp, i_flags );
 657
 658     if( p_vout->p_sys->p_display == NULL )
 659     {
 660         msg_Err( p_vout, "cannot set video mode" );
 661         return VLC_EGENERIC;
 662     }
 663
 664     SDL_LockSurface( p_vout->p_sys->p_display );
 665
 666     /* Choose the chroma we will try first. */
 667     switch( p_vout->render.i_chroma )
 668     {
 669         case VLC_FOURCC('Y','U','Y','2'):
 670         case VLC_FOURCC('Y','U','N','V'):
 671             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 672             i_sdl_chroma = SDL_YUY2_OVERLAY;
 673             break;
 674         case VLC_FOURCC('U','Y','V','Y'):
 675         case VLC_FOURCC('U','Y','N','V'):
 676         case VLC_FOURCC('Y','4','2','2'):
 677             p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
 678             i_sdl_chroma = SDL_UYVY_OVERLAY;
 679             break;
 680         case VLC_FOURCC('Y','V','Y','U'):
 681             p_vout->output.i_chroma = VLC_FOURCC('Y','V','Y','U');
 682             i_sdl_chroma = SDL_YVYU_OVERLAY;
 683             break;
 684         case VLC_FOURCC('Y','V','1','2'):
 685         case VLC_FOURCC('I','4','2','0'):
 686         case VLC_FOURCC('I','Y','U','V'):
 687         default:
 688             p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 689             i_sdl_chroma = SDL_YV12_OVERLAY;
 690             break;
 691     }
 692
 693     p_vout->p_sys->p_overlay =
 694         SDL_CreateYUVOverlay( 32, 32, i_sdl_chroma, p_vout->p_sys->p_display );
 695     /* FIXME: if the first overlay we find is software, don't stop,
 696      * because we may find a hardware one later ... */
 697
 698     /* If this best choice failed, fall back to other chromas */
 699     if( p_vout->p_sys->p_overlay == NULL )
 700     {
 701         p_vout->output.i_chroma = VLC_FOURCC('I','Y','U','V');
 702         p_vout->p_sys->p_overlay =
 703             SDL_CreateYUVOverlay( 32, 32, SDL_IYUV_OVERLAY,
 704                                   p_vout->p_sys->p_display );
 705     }
 706
 707     if( p_vout->p_sys->p_overlay == NULL )
 708     {
 709         p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 710         p_vout->p_sys->p_overlay =
 711             SDL_CreateYUVOverlay( 32, 32, SDL_YV12_OVERLAY,
 712                                   p_vout->p_sys->p_display );
 713     }
 714
 715     if( p_vout->p_sys->p_overlay == NULL )
 716     {
 717         p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 718         p_vout->p_sys->p_overlay =
 719             SDL_CreateYUVOverlay( 32, 32, SDL_YUY2_OVERLAY,
 720                                   p_vout->p_sys->p_display );
 721     }
 722
 723     if( p_vout->p_sys->p_overlay == NULL )
 724     {
 725         msg_Warn( p_vout, "no SDL overlay for 0x%.8x (%4.4s)",
 726                   p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma );
 727
 728         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 729         {
 730             case 8:
 731                 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 732                 p_vout->output.pf_setpalette = SetPalette;
 733                 break;
 734             case 15:
 735                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
 736                 break;
 737             case 16:
 738                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 739                 break;
 740             case 24:
 741                 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 742                 break;
 743             case 32:
 744                 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 745                 break;
 746             default:
 747                 msg_Err( p_vout, "unknown screen depth %i",
 748                          p_vout->p_sys->p_display->format->BitsPerPixel );
 749                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 750                 SDL_FreeSurface( p_vout->p_sys->p_display );
 751                 return VLC_EGENERIC;
 752         }
 753
 754         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
 755         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
 756         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
 757
 758         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 759                            VOUT_TITLE " (software RGB SDL output)" );
 760     }
 761     else
 762     {
 763         if( p_vout->p_sys->p_overlay->hw_overlay )
 764         {
 765             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 766                                VOUT_TITLE " (hardware YUV SDL output)" );
 767         }
 768         else
 769         {
 770             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 771                                VOUT_TITLE " (software YUV SDL output)" );
 772         }
 773     }
 774
 775     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 776
 777     return VLC_SUCCESS;
 778 }
 779
 780 /*****************************************************************************
 781  * CloseDisplay: close and reset SDL device
 782  *****************************************************************************
 783  * This function returns all resources allocated by OpenDisplay and restore
 784  * the original state of the device.
 785  *****************************************************************************/
 786 static void CloseDisplay( vout_thread_t *p_vout )
 787 {
 788     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 789     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 790     SDL_FreeSurface( p_vout->p_sys->p_display );
 791 }
 792
 793 /*****************************************************************************
 794  * NewPicture: allocate a picture
 795  *****************************************************************************
 796  * Returns 0 on success, -1 otherwise
 797  *****************************************************************************/
 798 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 799 {
 800     int i_width  = p_vout->output.i_width;
 801     int i_height = p_vout->output.i_height;
 802
 803     if( p_vout->p_sys->p_overlay == NULL )
 804     {
 805         /* RGB picture */
 806         if( p_vout->p_sys->i_surfaces )
 807         {
 808             /* We already allocated this surface, return */
 809             return VLC_EGENERIC;
 810         }
 811
 812         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 813
 814         if( p_pic->p_sys == NULL )
 815         {
 816             return VLC_ENOMEM;
 817         }
 818
 819         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 820         {
 821             case 8:
 822                 p_pic->p->i_pixel_pitch = 1;
 823                 break;
 824             case 15:
 825             case 16:
 826                 p_pic->p->i_pixel_pitch = 2;
 827                 break;
 828             case 24:
 829             case 32:
 830                 p_pic->p->i_pixel_pitch = 4;
 831                 break;
 832             default:
 833                 return VLC_EGENERIC;
 834         }
 835
 836         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 837         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 838         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 839         p_pic->p->i_visible_pitch =
 840             p_pic->p->i_pixel_pitch * p_vout->p_sys->p_display->w;
 841
 842         p_vout->p_sys->i_surfaces++;
 843
 844         p_pic->i_planes = 1;
 845     }
 846     else
 847     {
 848         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 849
 850         if( p_pic->p_sys == NULL )
 851         {
 852             return VLC_ENOMEM;
 853         }
 854
 855         p_pic->p_sys->p_overlay =
 856             SDL_CreateYUVOverlay( i_width, i_height,
 857                                   p_vout->output.i_chroma,
 858                                   p_vout->p_sys->p_display );
 859
 860         if( p_pic->p_sys->p_overlay == NULL )
 861         {
 862             free( p_pic->p_sys );
 863             return VLC_EGENERIC;
 864         }
 865
 866         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 867
 868         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 869         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 870         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 871
 872         switch( p_vout->output.i_chroma )
 873         {
 874         case SDL_YV12_OVERLAY:
 875             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 876             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
 877
 878             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 879             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 880             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 881             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 882             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 883
 884             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 885             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 886             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 887             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 888             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 889
 890             p_pic->i_planes = 3;
 891             break;
 892
 893         case SDL_IYUV_OVERLAY:
 894             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 895             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
 896
 897             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 898             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 899             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 900             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 901             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 902
 903             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 904             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 905             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 906             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 907             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 908
 909             p_pic->i_planes = 3;
 910             break;
 911
 912         default:
 913             p_pic->p[Y_PLANE].i_pixel_pitch = 2;
 914             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w * 2;
 915
 916             p_pic->i_planes = 1;
 917             break;
 918         }
 919     }
 920
 921     return VLC_SUCCESS;
 922 }
 923
 924 /*****************************************************************************
 925  * SetPalette: sets an 8 bpp palette
 926  *****************************************************************************/
 927 static void SetPalette( vout_thread_t *p_vout,
 928                         uint16_t *red, uint16_t *green, uint16_t *blue )
 929 {
 930     SDL_Color colors[256];
 931     int i;
 932
 933     /* Fill colors with color information */
 934     for( i = 0; i < 256; i++ )
 935     {
 936         colors[ i ].r = red[ i ] >> 8;
 937         colors[ i ].g = green[ i ] >> 8;
 938         colors[ i ].b = blue[ i ] >> 8;
 939     }
 940
 941     /* Set palette */
 942     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 943     {
 944         msg_Err( p_vout, "failed setting palette" );
 945     }
 946 }
 947