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

   1 /*****************************************************************************
   2  * vout_sdl.c: SDL video output display method
   3  *****************************************************************************
   4  * Copyright (C) 1998-2001 VideoLAN
   5  * $Id: vout_sdl.c,v 1.80 2002/01/12 01:25:57 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 <videolan/vlc.h>
  34
  35 #include <sys/types.h>
  36 #ifndef WIN32
  37 #   include <netinet/in.h>                            /* BSD: struct in_addr */
  38 #endif
  39
  40 #include SDL_INCLUDE_FILE
  41
  42 #include "netutils.h"
  43
  44 #include "video.h"
  45 #include "video_output.h"
  46
  47 #include "interface.h"
  48
  49 #include "stream_control.h"                 /* needed by input_ext-intf.h... */
  50 #include "input_ext-intf.h"
  51
  52 #define SDL_MAX_DIRECTBUFFERS 10
  53 #define SDL_DEFAULT_BPP 16
  54
  55 /*****************************************************************************
  56  * vout_sys_t: video output SDL method descriptor
  57  *****************************************************************************
  58  * This structure is part of the video output thread descriptor.
  59  * It describes the SDL specific properties of an output thread.
  60  *****************************************************************************/
  61 typedef struct vout_sys_s
  62 {
  63     SDL_Surface *   p_display;                             /* display device */
  64
  65     int i_width;
  66     int i_height;
  67
  68     /* For YUV output */
  69     SDL_Overlay * p_overlay;   /* An overlay we keep to grab the XVideo port */
  70
  71     /* For RGB output */
  72     int i_surfaces;
  73     int i_red_mask;
  74     int i_green_mask;
  75     int i_blue_mask;
  76
  77     boolean_t   b_cursor;
  78     boolean_t   b_cursor_autohidden;
  79     mtime_t     i_lastmoved;
  80
  81 } vout_sys_t;
  82
  83 /*****************************************************************************
  84  * picture_sys_t: direct buffer method descriptor
  85  *****************************************************************************
  86  * This structure is part of the picture descriptor, it describes the
  87  * SDL specific properties of a direct buffer.
  88  *****************************************************************************/
  89 typedef struct picture_sys_s
  90 {
  91     SDL_Overlay *p_overlay;
  92
  93 } picture_sys_t;
  94
  95 /*****************************************************************************
  96  * Seeking function TODO: put this in a generic location !
  97  *****************************************************************************/
  98 static __inline__ void vout_Seek( off_t i_seek )
  99 {
 100     off_t i_tell;
 101
 102     vlc_mutex_lock( &p_input_bank->lock );
 103     if( p_input_bank->pp_input[0] != NULL )
 104     {
 105 #define S p_input_bank->pp_input[0]->stream
 106         i_tell = S.p_selected_area->i_tell + i_seek * (off_t)50 * S.i_mux_rate;
 107
 108         i_tell = ( i_tell <= 0 /*S.p_selected_area->i_start*/ )
 109                    ? 0 /*S.p_selected_area->i_start*/
 110                    : ( i_tell >= S.p_selected_area->i_size )
 111                        ? S.p_selected_area->i_size
 112                        : i_tell;
 113
 114         input_Seek( p_input_bank->pp_input[0], i_tell );
 115 #undef S
 116     }
 117     vlc_mutex_unlock( &p_input_bank->lock );
 118 }
 119
 120 /*****************************************************************************
 121  * Local prototypes.
 122  *****************************************************************************/
 123 static int  vout_Probe      ( probedata_t *p_data );
 124 static int  vout_Create     ( struct vout_thread_s * );
 125 static int  vout_Init       ( struct vout_thread_s * );
 126 static void vout_End        ( struct vout_thread_s * );
 127 static void vout_Destroy    ( struct vout_thread_s * );
 128 static int  vout_Manage     ( struct vout_thread_s * );
 129 static void vout_Render     ( struct vout_thread_s *, struct picture_s * );
 130 static void vout_Display    ( struct vout_thread_s *, struct picture_s * );
 131
 132 static int  SDLOpenDisplay      ( vout_thread_t *p_vout );
 133 static void SDLCloseDisplay     ( vout_thread_t *p_vout );
 134 static int  SDLNewPicture       ( vout_thread_t *p_vout, picture_t *p_pic );
 135
 136 /*****************************************************************************
 137  * Functions exported as capabilities. They are declared as static so that
 138  * we don't pollute the namespace too much.
 139  *****************************************************************************/
 140 void _M( vout_getfunctions )( function_list_t * p_function_list )
 141 {
 142     p_function_list->pf_probe = vout_Probe;
 143     p_function_list->functions.vout.pf_create     = vout_Create;
 144     p_function_list->functions.vout.pf_init       = vout_Init;
 145     p_function_list->functions.vout.pf_end        = vout_End;
 146     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 147     p_function_list->functions.vout.pf_manage     = vout_Manage;
 148     p_function_list->functions.vout.pf_render     = vout_Render;
 149     p_function_list->functions.vout.pf_display    = vout_Display;
 150 }
 151
 152 /*****************************************************************************
 153  * vout_Probe: probe the video driver and return a score
 154  *****************************************************************************
 155  * This function tries to initialize SDL and returns a score to the
 156  * plugin manager so that it can select the best plugin.
 157  *****************************************************************************/
 158 static int vout_Probe( probedata_t *p_data )
 159 {
 160     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 161     {
 162         return( 0 );
 163     }
 164
 165     return( 100 );
 166 }
 167
 168 /*****************************************************************************
 169  * vout_Create: allocate SDL video thread output method
 170  *****************************************************************************
 171  * This function allocate and initialize a SDL vout method. It uses some of the
 172  * vout properties to choose the correct mode, and change them according to the
 173  * mode actually used.
 174  *****************************************************************************/
 175 static int vout_Create( vout_thread_t *p_vout )
 176 {
 177     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 178     {
 179         return( 1 );
 180     }
 181
 182     /* Allocate structure */
 183     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 184     if( p_vout->p_sys == NULL )
 185     {
 186         intf_ErrMsg( "vout error: can't create p_sys (%s)", strerror(ENOMEM) );
 187         return( 1 );
 188     }
 189
 190     /* Initialize library */
 191     if( SDL_Init( SDL_INIT_VIDEO
 192 #ifndef WIN32
 193     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 194                 | SDL_INIT_EVENTTHREAD
 195 #endif
 196 #ifdef DEBUG
 197     /* In debug mode you may want vlc to dump a core instead of staying
 198      * stuck */
 199                 | SDL_INIT_NOPARACHUTE
 200 #endif
 201                 ) < 0 )
 202     {
 203         intf_ErrMsg( "vout error: can't initialize SDL (%s)", SDL_GetError() );
 204         free( p_vout->p_sys );
 205         return( 1 );
 206     }
 207
 208     p_vout->p_sys->b_cursor = 1;
 209     p_vout->p_sys->b_cursor_autohidden = 0;
 210     p_vout->p_sys->i_lastmoved = mdate();
 211
 212     if( p_vout->render.i_height * p_vout->render.i_aspect
 213          >= p_vout->render.i_width * VOUT_ASPECT_FACTOR )
 214     {
 215         p_vout->p_sys->i_width = p_vout->render.i_height
 216             * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR;
 217         p_vout->p_sys->i_height = p_vout->render.i_height;
 218     }
 219     else
 220     {
 221         p_vout->p_sys->i_width = p_vout->render.i_width;
 222         p_vout->p_sys->i_height = p_vout->render.i_width
 223             * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect;
 224     }
 225
 226 #if 0
 227     if( p_vout->p_sys->i_width <= 300 && p_vout->p_sys->i_height <= 300 )
 228     {
 229         p_vout->p_sys->i_width <<= 1;
 230         p_vout->p_sys->i_height <<= 1;
 231     }
 232     else if( p_vout->p_sys->i_width <= 400 && p_vout->p_sys->i_height <= 400 )
 233     {
 234         p_vout->p_sys->i_width += p_vout->p_sys->i_width >> 1;
 235         p_vout->p_sys->i_height += p_vout->p_sys->i_height >> 1;
 236     }
 237 #endif
 238
 239     if( SDLOpenDisplay( p_vout ) )
 240     {
 241         intf_ErrMsg( "vout error: can't set up SDL (%s)", SDL_GetError() );
 242         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 243         free( p_vout->p_sys );
 244         return( 1 );
 245     }
 246
 247     return( 0 );
 248 }
 249
 250 /*****************************************************************************
 251  * vout_Init: initialize SDL video thread output method
 252  *****************************************************************************
 253  * This function initialize the SDL display device.
 254  *****************************************************************************/
 255 static int vout_Init( vout_thread_t *p_vout )
 256 {
 257     int i_index;
 258     picture_t *p_pic;
 259
 260     p_vout->p_sys->i_surfaces = 0;
 261
 262     I_OUTPUTPICTURES = 0;
 263
 264     /* Initialize the output structure */
 265     if( p_vout->p_sys->p_overlay == NULL )
 266     {
 267         /* All we have is an RGB image with square pixels */
 268         p_vout->output.i_width  = p_vout->p_sys->i_width;
 269         p_vout->output.i_height = p_vout->p_sys->i_height;
 270         p_vout->output.i_aspect = p_vout->p_sys->i_width
 271                                    * VOUT_ASPECT_FACTOR
 272                                    / p_vout->p_sys->i_height;
 273     }
 274     else
 275     {
 276         /* We may need to convert the chroma, but at least we keep the
 277          * aspect ratio */
 278         p_vout->output.i_width  = p_vout->render.i_width;
 279         p_vout->output.i_height = p_vout->render.i_height;
 280         p_vout->output.i_aspect = p_vout->render.i_aspect;
 281     }
 282
 283     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 284     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 285     {
 286         p_pic = NULL;
 287
 288         /* Find an empty picture slot */
 289         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 290         {
 291             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 292             {
 293                 p_pic = p_vout->p_picture + i_index;
 294                 break;
 295             }
 296         }
 297
 298         /* Allocate the picture if we found one */
 299         if( p_pic == NULL || SDLNewPicture( p_vout, p_pic ) )
 300         {
 301             break;
 302         }
 303
 304         p_pic->i_status = DESTROYED_PICTURE;
 305         p_pic->i_type   = DIRECT_PICTURE;
 306
 307         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 308
 309         I_OUTPUTPICTURES++;
 310     }
 311
 312     return( 0 );
 313 }
 314
 315 /*****************************************************************************
 316  * vout_End: terminate Sys video thread output method
 317  *****************************************************************************
 318  * Terminate an output method created by vout_SDLCreate
 319  *****************************************************************************/
 320 static void vout_End( vout_thread_t *p_vout )
 321 {
 322     int i_index;
 323
 324     /* Free the output buffers we allocated */
 325     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 326     {
 327         i_index--;
 328         if( p_vout->p_sys->p_overlay == NULL )
 329         {
 330             /* RGB picture */
 331         }
 332         else
 333         {
 334             SDL_UnlockYUVOverlay(
 335                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 336             SDL_FreeYUVOverlay(
 337                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 338         }
 339         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 340     }
 341 }
 342
 343 /*****************************************************************************
 344  * vout_Destroy: destroy Sys video thread output method
 345  *****************************************************************************
 346  * Terminate an output method created by vout_SDLCreate
 347  *****************************************************************************/
 348 static void vout_Destroy( vout_thread_t *p_vout )
 349 {
 350     SDLCloseDisplay( p_vout );
 351
 352     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 353
 354     free( p_vout->p_sys );
 355 }
 356
 357 /*****************************************************************************
 358  * vout_Manage: handle Sys events
 359  *****************************************************************************
 360  * This function should be called regularly by video output thread. It returns
 361  * a non null value if an error occured.
 362  *****************************************************************************/
 363 static int vout_Manage( vout_thread_t *p_vout )
 364 {
 365     SDL_Event event;                                            /* SDL event */
 366
 367     /* Process events */
 368     while( SDL_PollEvent(&event) )
 369     {
 370         switch( event.type )
 371         {
 372         case SDL_VIDEORESIZE:                          /* Resizing of window */
 373             p_vout->p_sys->i_width = event.resize.w;
 374             p_vout->p_sys->i_height = event.resize.h;
 375             SDLCloseDisplay( p_vout );
 376             SDLOpenDisplay( p_vout );
 377             break;
 378
 379         case SDL_MOUSEMOTION:
 380             if( p_vout->p_sys->b_cursor &&
 381                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 382             {
 383                 if( p_vout->p_sys->b_cursor_autohidden )
 384                 {
 385                     p_vout->p_sys->b_cursor_autohidden = 0;
 386                     SDL_ShowCursor( 1 );
 387                 }
 388                 else
 389                 {
 390                     p_vout->p_sys->i_lastmoved = mdate();
 391                 }
 392             }
 393             break;
 394
 395         case SDL_MOUSEBUTTONUP:
 396             switch( event.button.button )
 397             {
 398             case SDL_BUTTON_RIGHT:
 399                 p_main->p_intf->b_menu_change = 1;
 400                 break;
 401             }
 402             break;
 403
 404         case SDL_MOUSEBUTTONDOWN:
 405             switch( event.button.button )
 406             {
 407             case SDL_BUTTON_LEFT:
 408                 /* In this part we will eventually manage
 409                  * clicks for DVD navigation for instance. For the
 410                  * moment just pause the stream. */
 411                 input_SetStatus( p_input_bank->pp_input[0],
 412                                  INPUT_STATUS_PAUSE );
 413                 break;
 414
 415             case 4:
 416                 vout_Seek( 15 );
 417                 break;
 418
 419             case 5:
 420                 vout_Seek( -15 );
 421                 break;
 422             }
 423             break;
 424
 425         case SDL_QUIT:
 426             p_main->p_intf->b_die = 1;
 427             break;
 428
 429         case SDL_KEYDOWN:                             /* if a key is pressed */
 430
 431             switch( event.key.keysym.sym )
 432             {
 433             case SDLK_q:                                             /* quit */
 434             case SDLK_ESCAPE:
 435                 p_main->p_intf->b_die = 1;
 436                 break;
 437
 438             case SDLK_f:                             /* switch to fullscreen */
 439                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 440                 break;
 441
 442             case SDLK_c:                                 /* toggle grayscale */
 443                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 444                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 445                 break;
 446
 447             case SDLK_i:                                      /* toggle info */
 448                 p_vout->b_info = ! p_vout->b_info;
 449                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 450                 break;
 451
 452             case SDLK_s:                                   /* toggle scaling */
 453                 p_vout->b_scale = ! p_vout->b_scale;
 454                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 455                 break;
 456
 457             case SDLK_SPACE:                             /* toggle interface */
 458                 p_vout->b_interface = ! p_vout->b_interface;
 459                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 460                 break;
 461
 462             case SDLK_MENU:
 463                 p_main->p_intf->b_menu_change = 1;
 464                 break;
 465
 466             case SDLK_LEFT:
 467                 vout_Seek( -5 );
 468                 break;
 469
 470             case SDLK_RIGHT:
 471                 vout_Seek( 5 );
 472                 break;
 473
 474             case SDLK_UP:
 475                 vout_Seek( 60 );
 476                 break;
 477
 478             case SDLK_DOWN:
 479                 vout_Seek( -60 );
 480                 break;
 481
 482             case SDLK_F10: network_ChannelJoin( 0 ); break;
 483             case SDLK_F1:  network_ChannelJoin( 1 ); break;
 484             case SDLK_F2:  network_ChannelJoin( 2 ); break;
 485             case SDLK_F3:  network_ChannelJoin( 3 ); break;
 486             case SDLK_F4:  network_ChannelJoin( 4 ); break;
 487             case SDLK_F5:  network_ChannelJoin( 5 ); break;
 488             case SDLK_F6:  network_ChannelJoin( 6 ); break;
 489             case SDLK_F7:  network_ChannelJoin( 7 ); break;
 490             case SDLK_F8:  network_ChannelJoin( 8 ); break;
 491             case SDLK_F9:  network_ChannelJoin( 9 ); break;
 492
 493             default:
 494                 intf_DbgMsg( "unhandled key %i", event.key.keysym.sym );
 495                 break;
 496             }
 497             break;
 498
 499         default:
 500             break;
 501         }
 502     }
 503
 504     /* Fullscreen change */
 505     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 506     {
 507         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 508
 509         SDL_WM_ToggleFullScreen(p_vout->p_sys->p_display);
 510
 511         p_vout->p_sys->b_cursor_autohidden = 0;
 512         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 513                         ! p_vout->p_sys->b_cursor_autohidden );
 514
 515         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 516     }
 517
 518     /* Pointer change */
 519     if( ! p_vout->p_sys->b_cursor_autohidden &&
 520         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 521     {
 522         /* Hide the mouse automatically */
 523         p_vout->p_sys->b_cursor_autohidden = 1;
 524         SDL_ShowCursor( 0 );
 525     }
 526
 527     return( 0 );
 528 }
 529
 530 /*****************************************************************************
 531  * vout_Render: render previously calculated output
 532  *****************************************************************************/
 533 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
 534 {
 535     ;
 536 }
 537
 538 /*****************************************************************************
 539  * vout_Display: displays previously rendered output
 540  *****************************************************************************
 541  * This function sends the currently rendered image to the display.
 542  *****************************************************************************/
 543 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 544 {
 545     int x, y, w, h;
 546     SDL_Rect disp;
 547
 548     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 549                        &x, &y, &w, &h );
 550     disp.x = x;
 551     disp.y = y;
 552     disp.w = w;
 553     disp.h = h;
 554
 555     if( p_vout->p_sys->p_overlay == NULL )
 556     {
 557         /* RGB picture */
 558         SDL_Flip( p_vout->p_sys->p_display );
 559     }
 560     else
 561     {
 562         /* Overlay picture */
 563         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 564         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 565         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 566     }
 567 }
 568
 569 /* following functions are local */
 570
 571 /*****************************************************************************
 572  * SDLOpenDisplay: open and initialize SDL device
 573  *****************************************************************************
 574  * Open and initialize display according to preferences specified in the vout
 575  * thread fields.
 576  *****************************************************************************/
 577 static int SDLOpenDisplay( vout_thread_t *p_vout )
 578 {
 579     Uint32 i_flags;
 580     int    i_bpp;
 581
 582     /* Initialize flags and cursor */
 583     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 584     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 585
 586     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 587                              SDL_DEFAULT_BPP, i_flags );
 588     if( i_bpp == 0 )
 589     {
 590         intf_ErrMsg( "vout error: no video mode available" );
 591         return( 1 );
 592     }
 593
 594     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 595                                                  p_vout->p_sys->i_height,
 596                                                  i_bpp, i_flags );
 597
 598     if( p_vout->p_sys->p_display == NULL )
 599     {
 600         intf_ErrMsg( "vout error: cannot set video mode" );
 601         return( 1 );
 602     }
 603
 604     SDL_LockSurface( p_vout->p_sys->p_display );
 605
 606     /* Choose the chroma we will try first. */
 607     switch( p_vout->render.i_chroma )
 608     {
 609         case FOURCC_YUY2:
 610         case FOURCC_YUNV:
 611             p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 612             break;
 613         case FOURCC_UYVY:
 614         case FOURCC_UYNV:
 615         case FOURCC_Y422:
 616             p_vout->output.i_chroma = SDL_UYVY_OVERLAY;
 617             break;
 618         case FOURCC_YVYU:
 619             p_vout->output.i_chroma = SDL_YVYU_OVERLAY;
 620             break;
 621         case FOURCC_YV12:
 622         case FOURCC_I420:
 623         case FOURCC_IYUV:
 624         default:
 625             p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 626             break;
 627     }
 628
 629     p_vout->p_sys->p_overlay =
 630         SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 631                               p_vout->p_sys->p_display );
 632
 633     /* FIXME: if the first overlay we find is software, don't stop,
 634      * because we may find a hardware one later ... */
 635
 636     /* If this best choice failed, fall back to other chromas */
 637     if( p_vout->p_sys->p_overlay == NULL )
 638     {
 639         p_vout->output.i_chroma = SDL_IYUV_OVERLAY;
 640         p_vout->p_sys->p_overlay =
 641             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 642                                   p_vout->p_sys->p_display );
 643     }
 644
 645     if( p_vout->p_sys->p_overlay == NULL )
 646     {
 647         p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 648         p_vout->p_sys->p_overlay =
 649             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 650                                   p_vout->p_sys->p_display );
 651     }
 652
 653     if( p_vout->p_sys->p_overlay == NULL )
 654     {
 655         p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 656         p_vout->p_sys->p_overlay =
 657             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 658                                   p_vout->p_sys->p_display );
 659     }
 660
 661     if( p_vout->p_sys->p_overlay == NULL )
 662     {
 663         intf_WarnMsg( 3, "vout warning: no SDL overlay for 0x%.8x (%4.4s)",
 664                          p_vout->render.i_chroma,
 665                          (char*)&p_vout->render.i_chroma );
 666
 667         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 668         {
 669             case 8:
 670                 p_vout->output.i_chroma = FOURCC_BI_RGB;
 671                 break;
 672             case 15:
 673                 p_vout->output.i_chroma = FOURCC_RV15;
 674                 break;
 675             case 16:
 676                 p_vout->output.i_chroma = FOURCC_RV16;
 677                 break;
 678             case 24:
 679                 p_vout->output.i_chroma = FOURCC_BI_BITFIELDS;
 680                 break;
 681             case 32:
 682                 p_vout->output.i_chroma = FOURCC_BI_BITFIELDS;
 683                 break;
 684             default:
 685                 intf_ErrMsg( "vout error: unknown screen depth" );
 686                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 687                 SDL_FreeSurface( p_vout->p_sys->p_display );
 688                 return( -1 );
 689         }
 690
 691         p_vout->p_sys->i_red_mask = p_vout->p_sys->p_display->format->Rmask;
 692         p_vout->p_sys->i_green_mask = p_vout->p_sys->p_display->format->Gmask;
 693         p_vout->p_sys->i_blue_mask = p_vout->p_sys->p_display->format->Bmask;
 694
 695         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 696                            VOUT_TITLE " (software RGB SDL output)" );
 697     }
 698     else
 699     {
 700         if( p_vout->p_sys->p_overlay->hw_overlay )
 701         {
 702             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 703                                VOUT_TITLE " (hardware YUV SDL output)" );
 704         }
 705         else
 706         {
 707             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 708                                VOUT_TITLE " (software YUV SDL output)" );
 709         }
 710     }
 711
 712     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 713
 714     return( 0 );
 715 }
 716
 717 /*****************************************************************************
 718  * SDLCloseDisplay: close and reset SDL device
 719  *****************************************************************************
 720  * This function returns all resources allocated by SDLOpenDisplay and restore
 721  * the original state of the device.
 722  *****************************************************************************/
 723 static void SDLCloseDisplay( vout_thread_t *p_vout )
 724 {
 725     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 726     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 727     SDL_FreeSurface( p_vout->p_sys->p_display );
 728 }
 729
 730 /*****************************************************************************
 731  * SDLNewPicture: allocate a picture
 732  *****************************************************************************
 733  * Returns 0 on success, -1 otherwise
 734  *****************************************************************************/
 735 static int SDLNewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 736 {
 737     int i_width  = p_vout->output.i_width;
 738     int i_height = p_vout->output.i_height;
 739
 740     if( p_vout->p_sys->p_overlay == NULL )
 741     {
 742         /* RGB picture */
 743         if( p_vout->p_sys->i_surfaces )
 744         {
 745             /* We already allocated this surface, return */
 746             return -1;
 747         }
 748
 749         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 750
 751         if( p_pic->p_sys == NULL )
 752         {
 753             return -1;
 754         }
 755
 756         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 757         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 758         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 759         p_pic->p->i_pixel_bytes = 2;
 760
 761         if( p_pic->p->i_pitch == 2 * p_vout->p_sys->p_display->w )
 762         {
 763             p_pic->p->b_margin = 0;
 764         }
 765         else
 766         {
 767             p_pic->p->b_margin = 1;
 768             p_pic->p->b_hidden = 1;
 769             p_pic->p->i_visible_bytes = 2 * p_vout->p_sys->p_display->w;
 770         }
 771
 772         p_pic->p->i_red_mask = p_vout->p_sys->p_display->format->Rmask;
 773         p_pic->p->i_green_mask = p_vout->p_sys->p_display->format->Gmask;
 774         p_pic->p->i_blue_mask = p_vout->p_sys->p_display->format->Bmask;
 775
 776         p_vout->p_sys->i_surfaces++;
 777
 778         p_pic->i_planes = 1;
 779     }
 780     else
 781     {
 782         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 783
 784         if( p_pic->p_sys == NULL )
 785         {
 786             return -1;
 787         }
 788
 789         p_pic->p_sys->p_overlay =
 790             SDL_CreateYUVOverlay( i_width, i_height,
 791                                   p_vout->output.i_chroma,
 792                                   p_vout->p_sys->p_display );
 793
 794         if( p_pic->p_sys->p_overlay == NULL )
 795         {
 796             free( p_pic->p_sys );
 797             return -1;
 798         }
 799
 800         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 801
 802         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 803         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 804         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 805
 806         switch( p_vout->output.i_chroma )
 807         {
 808         case SDL_YV12_OVERLAY:
 809             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
 810             p_pic->p[Y_PLANE].b_margin = 0;
 811
 812             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 813             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 814             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 815             p_pic->p[U_PLANE].i_pixel_bytes = 1;
 816             p_pic->p[U_PLANE].b_margin = 0;
 817
 818             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 819             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 820             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 821             p_pic->p[V_PLANE].i_pixel_bytes = 1;
 822             p_pic->p[V_PLANE].b_margin = 0;
 823
 824             p_pic->i_planes = 3;
 825             break;
 826
 827         case SDL_IYUV_OVERLAY:
 828             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
 829             p_pic->p[Y_PLANE].b_margin = 0;
 830
 831             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 832             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 833             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 834             p_pic->p[U_PLANE].i_pixel_bytes = 1;
 835             p_pic->p[U_PLANE].b_margin = 0;
 836
 837             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 838             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 839             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 840             p_pic->p[V_PLANE].i_pixel_bytes = 1;
 841             p_pic->p[V_PLANE].b_margin = 0;
 842
 843             p_pic->i_planes = 3;
 844             break;
 845
 846         default:
 847             p_pic->p[Y_PLANE].i_pixel_bytes = 2;
 848             p_pic->p[Y_PLANE].b_margin = 0;
 849
 850             p_pic->i_planes = 1;
 851             break;
 852         }
 853     }
 854
 855     return 0;
 856 }
 857