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 1.83 2002/03/16 23:03:19 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
  74     boolean_t   b_cursor;
  75     boolean_t   b_cursor_autohidden;
  76     mtime_t     i_lastmoved;
  77
  78 } vout_sys_t;
  79
  80 /*****************************************************************************
  81  * picture_sys_t: direct buffer method descriptor
  82  *****************************************************************************
  83  * This structure is part of the picture descriptor, it describes the
  84  * SDL specific properties of a direct buffer.
  85  *****************************************************************************/
  86 typedef struct picture_sys_s
  87 {
  88     SDL_Overlay *p_overlay;
  89
  90 } picture_sys_t;
  91
  92 /*****************************************************************************
  93  * Seeking function TODO: put this in a generic location !
  94  *****************************************************************************/
  95 static __inline__ void vout_Seek( off_t i_seek )
  96 {
  97     off_t i_tell;
  98
  99     vlc_mutex_lock( &p_input_bank->lock );
 100     if( p_input_bank->pp_input[0] != NULL )
 101     {
 102 #define S p_input_bank->pp_input[0]->stream
 103         i_tell = S.p_selected_area->i_tell + i_seek * (off_t)50 * S.i_mux_rate;
 104
 105         i_tell = ( i_tell <= 0 /*S.p_selected_area->i_start*/ )
 106                    ? 0 /*S.p_selected_area->i_start*/
 107                    : ( i_tell >= S.p_selected_area->i_size )
 108                        ? S.p_selected_area->i_size
 109                        : i_tell;
 110
 111         input_Seek( p_input_bank->pp_input[0], i_tell );
 112 #undef S
 113     }
 114     vlc_mutex_unlock( &p_input_bank->lock );
 115 }
 116
 117 /*****************************************************************************
 118  * Local prototypes.
 119  *****************************************************************************/
 120 static int  vout_Create     ( struct vout_thread_s * );
 121 static int  vout_Init       ( struct vout_thread_s * );
 122 static void vout_End        ( struct vout_thread_s * );
 123 static void vout_Destroy    ( struct vout_thread_s * );
 124 static int  vout_Manage     ( struct vout_thread_s * );
 125 static void vout_Render     ( struct vout_thread_s *, struct picture_s * );
 126 static void vout_Display    ( struct vout_thread_s *, struct picture_s * );
 127
 128 static int  SDLOpenDisplay      ( vout_thread_t *p_vout );
 129 static void SDLCloseDisplay     ( vout_thread_t *p_vout );
 130 static int  SDLNewPicture       ( vout_thread_t *p_vout, picture_t *p_pic );
 131
 132 /*****************************************************************************
 133  * Functions exported as capabilities. They are declared as static so that
 134  * we don't pollute the namespace too much.
 135  *****************************************************************************/
 136 void _M( vout_getfunctions )( function_list_t * p_function_list )
 137 {
 138     p_function_list->functions.vout.pf_create     = vout_Create;
 139     p_function_list->functions.vout.pf_init       = vout_Init;
 140     p_function_list->functions.vout.pf_end        = vout_End;
 141     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 142     p_function_list->functions.vout.pf_manage     = vout_Manage;
 143     p_function_list->functions.vout.pf_render     = vout_Render;
 144     p_function_list->functions.vout.pf_display    = vout_Display;
 145 }
 146
 147 /*****************************************************************************
 148  * vout_Create: allocate SDL video thread output method
 149  *****************************************************************************
 150  * This function allocate and initialize a SDL vout method. It uses some of the
 151  * vout properties to choose the correct mode, and change them according to the
 152  * mode actually used.
 153  *****************************************************************************/
 154 static int vout_Create( vout_thread_t *p_vout )
 155 {
 156     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 157     {
 158         return( 1 );
 159     }
 160
 161     /* Allocate structure */
 162     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 163     if( p_vout->p_sys == NULL )
 164     {
 165         intf_ErrMsg( "vout error: can't create p_sys (%s)", strerror(ENOMEM) );
 166         return( 1 );
 167     }
 168
 169     /* Initialize library */
 170     if( SDL_Init( SDL_INIT_VIDEO
 171 #ifndef WIN32
 172     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 173                 | SDL_INIT_EVENTTHREAD
 174 #endif
 175 #ifdef DEBUG
 176     /* In debug mode you may want vlc to dump a core instead of staying
 177      * stuck */
 178                 | SDL_INIT_NOPARACHUTE
 179 #endif
 180                 ) < 0 )
 181     {
 182         intf_ErrMsg( "vout error: can't initialize SDL (%s)", SDL_GetError() );
 183         free( p_vout->p_sys );
 184         return( 1 );
 185     }
 186
 187     p_vout->p_sys->b_cursor = 1;
 188     p_vout->p_sys->b_cursor_autohidden = 0;
 189     p_vout->p_sys->i_lastmoved = mdate();
 190
 191     if( p_vout->render.i_height * p_vout->render.i_aspect
 192          >= p_vout->render.i_width * VOUT_ASPECT_FACTOR )
 193     {
 194         p_vout->p_sys->i_width = p_vout->render.i_height
 195             * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR;
 196         p_vout->p_sys->i_height = p_vout->render.i_height;
 197     }
 198     else
 199     {
 200         p_vout->p_sys->i_width = p_vout->render.i_width;
 201         p_vout->p_sys->i_height = p_vout->render.i_width
 202             * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect;
 203     }
 204
 205 #if 0
 206     if( p_vout->p_sys->i_width <= 300 && p_vout->p_sys->i_height <= 300 )
 207     {
 208         p_vout->p_sys->i_width <<= 1;
 209         p_vout->p_sys->i_height <<= 1;
 210     }
 211     else if( p_vout->p_sys->i_width <= 400 && p_vout->p_sys->i_height <= 400 )
 212     {
 213         p_vout->p_sys->i_width += p_vout->p_sys->i_width >> 1;
 214         p_vout->p_sys->i_height += p_vout->p_sys->i_height >> 1;
 215     }
 216 #endif
 217
 218     if( SDLOpenDisplay( p_vout ) )
 219     {
 220         intf_ErrMsg( "vout error: can't set up SDL (%s)", SDL_GetError() );
 221         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 222         free( p_vout->p_sys );
 223         return( 1 );
 224     }
 225
 226     return( 0 );
 227 }
 228
 229 /*****************************************************************************
 230  * vout_Init: initialize SDL video thread output method
 231  *****************************************************************************
 232  * This function initialize the SDL display device.
 233  *****************************************************************************/
 234 static int vout_Init( vout_thread_t *p_vout )
 235 {
 236     int i_index;
 237     picture_t *p_pic;
 238
 239     p_vout->p_sys->i_surfaces = 0;
 240
 241     I_OUTPUTPICTURES = 0;
 242
 243     /* Initialize the output structure */
 244     if( p_vout->p_sys->p_overlay == NULL )
 245     {
 246         /* All we have is an RGB image with square pixels */
 247         p_vout->output.i_width  = p_vout->p_sys->i_width;
 248         p_vout->output.i_height = p_vout->p_sys->i_height;
 249         p_vout->output.i_aspect = p_vout->p_sys->i_width
 250                                    * VOUT_ASPECT_FACTOR
 251                                    / p_vout->p_sys->i_height;
 252     }
 253     else
 254     {
 255         /* We may need to convert the chroma, but at least we keep the
 256          * aspect ratio */
 257         p_vout->output.i_width  = p_vout->render.i_width;
 258         p_vout->output.i_height = p_vout->render.i_height;
 259         p_vout->output.i_aspect = p_vout->render.i_aspect;
 260     }
 261
 262     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 263     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 264     {
 265         p_pic = NULL;
 266
 267         /* Find an empty picture slot */
 268         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 269         {
 270             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 271             {
 272                 p_pic = p_vout->p_picture + i_index;
 273                 break;
 274             }
 275         }
 276
 277         /* Allocate the picture if we found one */
 278         if( p_pic == NULL || SDLNewPicture( p_vout, p_pic ) )
 279         {
 280             break;
 281         }
 282
 283         p_pic->i_status = DESTROYED_PICTURE;
 284         p_pic->i_type   = DIRECT_PICTURE;
 285
 286         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 287
 288         I_OUTPUTPICTURES++;
 289     }
 290
 291     return( 0 );
 292 }
 293
 294 /*****************************************************************************
 295  * vout_End: terminate Sys video thread output method
 296  *****************************************************************************
 297  * Terminate an output method created by vout_SDLCreate
 298  *****************************************************************************/
 299 static void vout_End( vout_thread_t *p_vout )
 300 {
 301     int i_index;
 302
 303     /* Free the output buffers we allocated */
 304     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 305     {
 306         i_index--;
 307         if( p_vout->p_sys->p_overlay == NULL )
 308         {
 309             /* RGB picture */
 310         }
 311         else
 312         {
 313             SDL_UnlockYUVOverlay(
 314                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 315             SDL_FreeYUVOverlay(
 316                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 317         }
 318         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 319     }
 320 }
 321
 322 /*****************************************************************************
 323  * vout_Destroy: destroy Sys video thread output method
 324  *****************************************************************************
 325  * Terminate an output method created by vout_SDLCreate
 326  *****************************************************************************/
 327 static void vout_Destroy( vout_thread_t *p_vout )
 328 {
 329     SDLCloseDisplay( p_vout );
 330
 331     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 332
 333     free( p_vout->p_sys );
 334 }
 335
 336 /*****************************************************************************
 337  * vout_Manage: handle Sys events
 338  *****************************************************************************
 339  * This function should be called regularly by video output thread. It returns
 340  * a non null value if an error occured.
 341  *****************************************************************************/
 342 static int vout_Manage( vout_thread_t *p_vout )
 343 {
 344     SDL_Event event;                                            /* SDL event */
 345
 346     /* Process events */
 347     while( SDL_PollEvent(&event) )
 348     {
 349         switch( event.type )
 350         {
 351         case SDL_VIDEORESIZE:                          /* Resizing of window */
 352             p_vout->p_sys->i_width = event.resize.w;
 353             p_vout->p_sys->i_height = event.resize.h;
 354             SDLCloseDisplay( p_vout );
 355             SDLOpenDisplay( p_vout );
 356             break;
 357
 358         case SDL_MOUSEMOTION:
 359             if( p_vout->p_sys->b_cursor &&
 360                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 361             {
 362                 if( p_vout->p_sys->b_cursor_autohidden )
 363                 {
 364                     p_vout->p_sys->b_cursor_autohidden = 0;
 365                     SDL_ShowCursor( 1 );
 366                 }
 367                 else
 368                 {
 369                     p_vout->p_sys->i_lastmoved = mdate();
 370                 }
 371             }
 372             break;
 373
 374         case SDL_MOUSEBUTTONUP:
 375             switch( event.button.button )
 376             {
 377             case SDL_BUTTON_RIGHT:
 378                 p_main->p_intf->b_menu_change = 1;
 379                 break;
 380             }
 381             break;
 382
 383         case SDL_MOUSEBUTTONDOWN:
 384             switch( event.button.button )
 385             {
 386             case SDL_BUTTON_LEFT:
 387                 /* In this part we will eventually manage
 388                  * clicks for DVD navigation for instance. For the
 389                  * moment just pause the stream. */
 390                 input_SetStatus( p_input_bank->pp_input[0],
 391                                  INPUT_STATUS_PAUSE );
 392                 break;
 393
 394             case 4:
 395                 vout_Seek( 15 );
 396                 break;
 397
 398             case 5:
 399                 vout_Seek( -15 );
 400                 break;
 401             }
 402             break;
 403
 404         case SDL_QUIT:
 405             p_main->p_intf->b_die = 1;
 406             break;
 407
 408         case SDL_KEYDOWN:                             /* if a key is pressed */
 409
 410             switch( event.key.keysym.sym )
 411             {
 412             case SDLK_q:                                             /* quit */
 413             case SDLK_ESCAPE:
 414                 p_main->p_intf->b_die = 1;
 415                 break;
 416
 417             case SDLK_f:                             /* switch to fullscreen */
 418                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 419                 break;
 420
 421             case SDLK_c:                                 /* toggle grayscale */
 422                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 423                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 424                 break;
 425
 426             case SDLK_i:                                      /* toggle info */
 427                 p_vout->b_info = ! p_vout->b_info;
 428                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 429                 break;
 430
 431             case SDLK_s:                                   /* toggle scaling */
 432                 p_vout->b_scale = ! p_vout->b_scale;
 433                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 434                 break;
 435
 436             case SDLK_SPACE:                             /* toggle interface */
 437                 p_vout->b_interface = ! p_vout->b_interface;
 438                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 439                 break;
 440
 441             case SDLK_MENU:
 442                 p_main->p_intf->b_menu_change = 1;
 443                 break;
 444
 445             case SDLK_LEFT:
 446                 vout_Seek( -5 );
 447                 break;
 448
 449             case SDLK_RIGHT:
 450                 vout_Seek( 5 );
 451                 break;
 452
 453             case SDLK_UP:
 454                 vout_Seek( 60 );
 455                 break;
 456
 457             case SDLK_DOWN:
 458                 vout_Seek( -60 );
 459                 break;
 460
 461             case SDLK_F10: network_ChannelJoin( 0 ); break;
 462             case SDLK_F1:  network_ChannelJoin( 1 ); break;
 463             case SDLK_F2:  network_ChannelJoin( 2 ); break;
 464             case SDLK_F3:  network_ChannelJoin( 3 ); break;
 465             case SDLK_F4:  network_ChannelJoin( 4 ); break;
 466             case SDLK_F5:  network_ChannelJoin( 5 ); break;
 467             case SDLK_F6:  network_ChannelJoin( 6 ); break;
 468             case SDLK_F7:  network_ChannelJoin( 7 ); break;
 469             case SDLK_F8:  network_ChannelJoin( 8 ); break;
 470             case SDLK_F9:  network_ChannelJoin( 9 ); break;
 471
 472             default:
 473                 break;
 474             }
 475             break;
 476
 477         default:
 478             break;
 479         }
 480     }
 481
 482     /* Fullscreen change */
 483     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 484     {
 485         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 486
 487         SDL_WM_ToggleFullScreen(p_vout->p_sys->p_display);
 488
 489         p_vout->p_sys->b_cursor_autohidden = 0;
 490         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 491                         ! p_vout->p_sys->b_cursor_autohidden );
 492
 493         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 494     }
 495
 496     /* Pointer change */
 497     if( ! p_vout->p_sys->b_cursor_autohidden &&
 498         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 499     {
 500         /* Hide the mouse automatically */
 501         p_vout->p_sys->b_cursor_autohidden = 1;
 502         SDL_ShowCursor( 0 );
 503     }
 504
 505     return( 0 );
 506 }
 507
 508 /*****************************************************************************
 509  * vout_Render: render previously calculated output
 510  *****************************************************************************/
 511 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
 512 {
 513     ;
 514 }
 515
 516 /*****************************************************************************
 517  * vout_Display: displays previously rendered output
 518  *****************************************************************************
 519  * This function sends the currently rendered image to the display.
 520  *****************************************************************************/
 521 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 522 {
 523     int x, y, w, h;
 524     SDL_Rect disp;
 525
 526     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 527                        &x, &y, &w, &h );
 528     disp.x = x;
 529     disp.y = y;
 530     disp.w = w;
 531     disp.h = h;
 532
 533     if( p_vout->p_sys->p_overlay == NULL )
 534     {
 535         /* RGB picture */
 536         SDL_Flip( p_vout->p_sys->p_display );
 537     }
 538     else
 539     {
 540         /* Overlay picture */
 541         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 542         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 543         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 544     }
 545 }
 546
 547 /* following functions are local */
 548
 549 /*****************************************************************************
 550  * SDLOpenDisplay: open and initialize SDL device
 551  *****************************************************************************
 552  * Open and initialize display according to preferences specified in the vout
 553  * thread fields.
 554  *****************************************************************************/
 555 static int SDLOpenDisplay( vout_thread_t *p_vout )
 556 {
 557     Uint32 i_flags;
 558     int    i_bpp;
 559
 560     /* Initialize flags and cursor */
 561     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 562     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 563
 564     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 565                              SDL_DEFAULT_BPP, i_flags );
 566     if( i_bpp == 0 )
 567     {
 568         intf_ErrMsg( "vout error: no video mode available" );
 569         return( 1 );
 570     }
 571
 572     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 573                                                  p_vout->p_sys->i_height,
 574                                                  i_bpp, i_flags );
 575
 576     if( p_vout->p_sys->p_display == NULL )
 577     {
 578         intf_ErrMsg( "vout error: cannot set video mode" );
 579         return( 1 );
 580     }
 581
 582     SDL_LockSurface( p_vout->p_sys->p_display );
 583
 584     /* Choose the chroma we will try first. */
 585     switch( p_vout->render.i_chroma )
 586     {
 587         case FOURCC_YUY2:
 588         case FOURCC_YUNV:
 589             p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 590             break;
 591         case FOURCC_UYVY:
 592         case FOURCC_UYNV:
 593         case FOURCC_Y422:
 594             p_vout->output.i_chroma = SDL_UYVY_OVERLAY;
 595             break;
 596         case FOURCC_YVYU:
 597             p_vout->output.i_chroma = SDL_YVYU_OVERLAY;
 598             break;
 599         case FOURCC_YV12:
 600         case FOURCC_I420:
 601         case FOURCC_IYUV:
 602         default:
 603             p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 604             break;
 605     }
 606
 607     p_vout->p_sys->p_overlay =
 608         SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 609                               p_vout->p_sys->p_display );
 610
 611     /* FIXME: if the first overlay we find is software, don't stop,
 612      * because we may find a hardware one later ... */
 613
 614     /* If this best choice failed, fall back to other chromas */
 615     if( p_vout->p_sys->p_overlay == NULL )
 616     {
 617         p_vout->output.i_chroma = SDL_IYUV_OVERLAY;
 618         p_vout->p_sys->p_overlay =
 619             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 620                                   p_vout->p_sys->p_display );
 621     }
 622
 623     if( p_vout->p_sys->p_overlay == NULL )
 624     {
 625         p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 626         p_vout->p_sys->p_overlay =
 627             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 628                                   p_vout->p_sys->p_display );
 629     }
 630
 631     if( p_vout->p_sys->p_overlay == NULL )
 632     {
 633         p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 634         p_vout->p_sys->p_overlay =
 635             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 636                                   p_vout->p_sys->p_display );
 637     }
 638
 639     if( p_vout->p_sys->p_overlay == NULL )
 640     {
 641         intf_WarnMsg( 3, "vout warning: no SDL overlay for 0x%.8x (%4.4s)",
 642                          p_vout->render.i_chroma,
 643                          (char*)&p_vout->render.i_chroma );
 644
 645         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 646         {
 647             case 8:
 648                 p_vout->output.i_chroma = FOURCC_RGB;
 649                 break;
 650             case 15:
 651                 p_vout->output.i_chroma = FOURCC_RV15;
 652                 break;
 653             case 16:
 654                 p_vout->output.i_chroma = FOURCC_RV16;
 655                 break;
 656             case 24:
 657                 p_vout->output.i_chroma = FOURCC_RV24;
 658                 break;
 659             case 32:
 660                 p_vout->output.i_chroma = FOURCC_RV32;
 661                 break;
 662             default:
 663                 intf_ErrMsg( "vout error: unknown screen depth" );
 664                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 665                 SDL_FreeSurface( p_vout->p_sys->p_display );
 666                 return( -1 );
 667         }
 668
 669         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
 670         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
 671         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
 672
 673         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 674                            VOUT_TITLE " (software RGB SDL output)" );
 675     }
 676     else
 677     {
 678         if( p_vout->p_sys->p_overlay->hw_overlay )
 679         {
 680             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 681                                VOUT_TITLE " (hardware YUV SDL output)" );
 682         }
 683         else
 684         {
 685             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 686                                VOUT_TITLE " (software YUV SDL output)" );
 687         }
 688     }
 689
 690     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 691
 692     return( 0 );
 693 }
 694
 695 /*****************************************************************************
 696  * SDLCloseDisplay: close and reset SDL device
 697  *****************************************************************************
 698  * This function returns all resources allocated by SDLOpenDisplay and restore
 699  * the original state of the device.
 700  *****************************************************************************/
 701 static void SDLCloseDisplay( vout_thread_t *p_vout )
 702 {
 703     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 704     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 705     SDL_FreeSurface( p_vout->p_sys->p_display );
 706 }
 707
 708 /*****************************************************************************
 709  * SDLNewPicture: allocate a picture
 710  *****************************************************************************
 711  * Returns 0 on success, -1 otherwise
 712  *****************************************************************************/
 713 static int SDLNewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 714 {
 715     int i_width  = p_vout->output.i_width;
 716     int i_height = p_vout->output.i_height;
 717
 718     if( p_vout->p_sys->p_overlay == NULL )
 719     {
 720         /* RGB picture */
 721         if( p_vout->p_sys->i_surfaces )
 722         {
 723             /* We already allocated this surface, return */
 724             return -1;
 725         }
 726
 727         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 728
 729         if( p_pic->p_sys == NULL )
 730         {
 731             return -1;
 732         }
 733
 734         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 735         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 736         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 737         p_pic->p->i_pixel_bytes = 2;
 738
 739         if( p_pic->p->i_pitch == 2 * p_vout->p_sys->p_display->w )
 740         {
 741             p_pic->p->b_margin = 0;
 742         }
 743         else
 744         {
 745             p_pic->p->b_margin = 1;
 746             p_pic->p->b_hidden = 1;
 747             p_pic->p->i_visible_bytes = 2 * p_vout->p_sys->p_display->w;
 748         }
 749
 750         p_vout->p_sys->i_surfaces++;
 751
 752         p_pic->i_planes = 1;
 753     }
 754     else
 755     {
 756         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 757
 758         if( p_pic->p_sys == NULL )
 759         {
 760             return -1;
 761         }
 762
 763         p_pic->p_sys->p_overlay =
 764             SDL_CreateYUVOverlay( i_width, i_height,
 765                                   p_vout->output.i_chroma,
 766                                   p_vout->p_sys->p_display );
 767
 768         if( p_pic->p_sys->p_overlay == NULL )
 769         {
 770             free( p_pic->p_sys );
 771             return -1;
 772         }
 773
 774         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 775
 776         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 777         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 778         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 779
 780         switch( p_vout->output.i_chroma )
 781         {
 782         case SDL_YV12_OVERLAY:
 783             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
 784             p_pic->p[Y_PLANE].b_margin = 0;
 785
 786             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 787             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 788             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 789             p_pic->p[U_PLANE].i_pixel_bytes = 1;
 790             p_pic->p[U_PLANE].b_margin = 0;
 791
 792             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 793             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 794             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 795             p_pic->p[V_PLANE].i_pixel_bytes = 1;
 796             p_pic->p[V_PLANE].b_margin = 0;
 797
 798             p_pic->i_planes = 3;
 799             break;
 800
 801         case SDL_IYUV_OVERLAY:
 802             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
 803             p_pic->p[Y_PLANE].b_margin = 0;
 804
 805             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 806             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 807             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 808             p_pic->p[U_PLANE].i_pixel_bytes = 1;
 809             p_pic->p[U_PLANE].b_margin = 0;
 810
 811             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 812             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 813             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 814             p_pic->p[V_PLANE].i_pixel_bytes = 1;
 815             p_pic->p[V_PLANE].b_margin = 0;
 816
 817             p_pic->i_planes = 3;
 818             break;
 819
 820         default:
 821             p_pic->p[Y_PLANE].i_pixel_bytes = 2;
 822             p_pic->p[Y_PLANE].b_margin = 0;
 823
 824             p_pic->i_planes = 1;
 825             break;
 826         }
 827     }
 828
 829     return 0;
 830 }
 831