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 1.84 2002/03/17 17:00:38 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  OpenDisplay     ( struct vout_thread_s * );
 129 static void CloseDisplay    ( struct vout_thread_s * );
 130 static int  NewPicture      ( struct vout_thread_s *, struct picture_s * );
 131 static void SetPalette      ( struct vout_thread_s *, u16 *, u16 *, u16 * );
 132
 133 /*****************************************************************************
 134  * Functions exported as capabilities. They are declared as static so that
 135  * we don't pollute the namespace too much.
 136  *****************************************************************************/
 137 void _M( vout_getfunctions )( function_list_t * p_function_list )
 138 {
 139     p_function_list->functions.vout.pf_create     = vout_Create;
 140     p_function_list->functions.vout.pf_init       = vout_Init;
 141     p_function_list->functions.vout.pf_end        = vout_End;
 142     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 143     p_function_list->functions.vout.pf_manage     = vout_Manage;
 144     p_function_list->functions.vout.pf_render     = vout_Render;
 145     p_function_list->functions.vout.pf_display    = vout_Display;
 146 }
 147
 148 /*****************************************************************************
 149  * vout_Create: allocate SDL video thread output method
 150  *****************************************************************************
 151  * This function allocate and initialize a SDL vout method. It uses some of the
 152  * vout properties to choose the correct mode, and change them according to the
 153  * mode actually used.
 154  *****************************************************************************/
 155 static int vout_Create( vout_thread_t *p_vout )
 156 {
 157     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 158     {
 159         return( 1 );
 160     }
 161
 162     /* Allocate structure */
 163     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 164     if( p_vout->p_sys == NULL )
 165     {
 166         intf_ErrMsg( "vout error: can't create p_sys (%s)", strerror(ENOMEM) );
 167         return( 1 );
 168     }
 169
 170     /* Initialize library */
 171     if( SDL_Init( SDL_INIT_VIDEO
 172 #ifndef WIN32
 173     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 174                 | SDL_INIT_EVENTTHREAD
 175 #endif
 176 #ifdef DEBUG
 177     /* In debug mode you may want vlc to dump a core instead of staying
 178      * stuck */
 179                 | SDL_INIT_NOPARACHUTE
 180 #endif
 181                 ) < 0 )
 182     {
 183         intf_ErrMsg( "vout error: can't initialize SDL (%s)", SDL_GetError() );
 184         free( p_vout->p_sys );
 185         return( 1 );
 186     }
 187
 188     p_vout->p_sys->b_cursor = 1;
 189     p_vout->p_sys->b_cursor_autohidden = 0;
 190     p_vout->p_sys->i_lastmoved = mdate();
 191
 192     if( p_vout->render.i_height * p_vout->render.i_aspect
 193          >= p_vout->render.i_width * VOUT_ASPECT_FACTOR )
 194     {
 195         p_vout->p_sys->i_width = p_vout->render.i_height
 196             * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR;
 197         p_vout->p_sys->i_height = p_vout->render.i_height;
 198     }
 199     else
 200     {
 201         p_vout->p_sys->i_width = p_vout->render.i_width;
 202         p_vout->p_sys->i_height = p_vout->render.i_width
 203             * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect;
 204     }
 205
 206 #if 0
 207     if( p_vout->p_sys->i_width <= 300 && p_vout->p_sys->i_height <= 300 )
 208     {
 209         p_vout->p_sys->i_width <<= 1;
 210         p_vout->p_sys->i_height <<= 1;
 211     }
 212     else if( p_vout->p_sys->i_width <= 400 && p_vout->p_sys->i_height <= 400 )
 213     {
 214         p_vout->p_sys->i_width += p_vout->p_sys->i_width >> 1;
 215         p_vout->p_sys->i_height += p_vout->p_sys->i_height >> 1;
 216     }
 217 #endif
 218
 219     if( OpenDisplay( p_vout ) )
 220     {
 221         intf_ErrMsg( "vout error: can't set up SDL (%s)", SDL_GetError() );
 222         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 223         free( p_vout->p_sys );
 224         return( 1 );
 225     }
 226
 227     return( 0 );
 228 }
 229
 230 /*****************************************************************************
 231  * vout_Init: initialize SDL video thread output method
 232  *****************************************************************************
 233  * This function initialize the SDL display device.
 234  *****************************************************************************/
 235 static int vout_Init( vout_thread_t *p_vout )
 236 {
 237     int i_index;
 238     picture_t *p_pic;
 239
 240     p_vout->p_sys->i_surfaces = 0;
 241
 242     I_OUTPUTPICTURES = 0;
 243
 244     /* Initialize the output structure */
 245     if( p_vout->p_sys->p_overlay == NULL )
 246     {
 247         /* All we have is an RGB image with square pixels */
 248         p_vout->output.i_width  = p_vout->p_sys->i_width;
 249         p_vout->output.i_height = p_vout->p_sys->i_height;
 250         p_vout->output.i_aspect = p_vout->p_sys->i_width
 251                                    * VOUT_ASPECT_FACTOR
 252                                    / p_vout->p_sys->i_height;
 253     }
 254     else
 255     {
 256         /* We may need to convert the chroma, but at least we keep the
 257          * aspect ratio */
 258         p_vout->output.i_width  = p_vout->render.i_width;
 259         p_vout->output.i_height = p_vout->render.i_height;
 260         p_vout->output.i_aspect = p_vout->render.i_aspect;
 261     }
 262
 263     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 264     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 265     {
 266         p_pic = NULL;
 267
 268         /* Find an empty picture slot */
 269         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 270         {
 271             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 272             {
 273                 p_pic = p_vout->p_picture + i_index;
 274                 break;
 275             }
 276         }
 277
 278         /* Allocate the picture if we found one */
 279         if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 280         {
 281             break;
 282         }
 283
 284         p_pic->i_status = DESTROYED_PICTURE;
 285         p_pic->i_type   = DIRECT_PICTURE;
 286
 287         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 288
 289         I_OUTPUTPICTURES++;
 290     }
 291
 292     return( 0 );
 293 }
 294
 295 /*****************************************************************************
 296  * vout_End: terminate Sys video thread output method
 297  *****************************************************************************
 298  * Terminate an output method created by vout_SDLCreate
 299  *****************************************************************************/
 300 static void vout_End( vout_thread_t *p_vout )
 301 {
 302     int i_index;
 303
 304     /* Free the output buffers we allocated */
 305     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 306     {
 307         i_index--;
 308         if( p_vout->p_sys->p_overlay == NULL )
 309         {
 310             /* RGB picture */
 311         }
 312         else
 313         {
 314             SDL_UnlockYUVOverlay(
 315                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 316             SDL_FreeYUVOverlay(
 317                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 318         }
 319         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 320     }
 321 }
 322
 323 /*****************************************************************************
 324  * vout_Destroy: destroy Sys video thread output method
 325  *****************************************************************************
 326  * Terminate an output method created by vout_SDLCreate
 327  *****************************************************************************/
 328 static void vout_Destroy( vout_thread_t *p_vout )
 329 {
 330     CloseDisplay( p_vout );
 331
 332     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 333
 334     free( p_vout->p_sys );
 335 }
 336
 337 /*****************************************************************************
 338  * vout_Manage: handle Sys events
 339  *****************************************************************************
 340  * This function should be called regularly by video output thread. It returns
 341  * a non null value if an error occured.
 342  *****************************************************************************/
 343 static int vout_Manage( vout_thread_t *p_vout )
 344 {
 345     SDL_Event event;                                            /* SDL event */
 346
 347     /* Process events */
 348     while( SDL_PollEvent(&event) )
 349     {
 350         switch( event.type )
 351         {
 352         case SDL_VIDEORESIZE:                          /* Resizing of window */
 353             p_vout->p_sys->i_width = event.resize.w;
 354             p_vout->p_sys->i_height = event.resize.h;
 355             CloseDisplay( p_vout );
 356             OpenDisplay( p_vout );
 357             break;
 358
 359         case SDL_MOUSEMOTION:
 360             if( p_vout->p_sys->b_cursor &&
 361                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 362             {
 363                 if( p_vout->p_sys->b_cursor_autohidden )
 364                 {
 365                     p_vout->p_sys->b_cursor_autohidden = 0;
 366                     SDL_ShowCursor( 1 );
 367                 }
 368                 else
 369                 {
 370                     p_vout->p_sys->i_lastmoved = mdate();
 371                 }
 372             }
 373             break;
 374
 375         case SDL_MOUSEBUTTONUP:
 376             switch( event.button.button )
 377             {
 378             case SDL_BUTTON_RIGHT:
 379                 p_main->p_intf->b_menu_change = 1;
 380                 break;
 381             }
 382             break;
 383
 384         case SDL_MOUSEBUTTONDOWN:
 385             switch( event.button.button )
 386             {
 387             case SDL_BUTTON_LEFT:
 388                 /* In this part we will eventually manage
 389                  * clicks for DVD navigation for instance. For the
 390                  * moment just pause the stream. */
 391                 input_SetStatus( p_input_bank->pp_input[0],
 392                                  INPUT_STATUS_PAUSE );
 393                 break;
 394
 395             case 4:
 396                 vout_Seek( 15 );
 397                 break;
 398
 399             case 5:
 400                 vout_Seek( -15 );
 401                 break;
 402             }
 403             break;
 404
 405         case SDL_QUIT:
 406             p_main->p_intf->b_die = 1;
 407             break;
 408
 409         case SDL_KEYDOWN:                             /* if a key is pressed */
 410
 411             switch( event.key.keysym.sym )
 412             {
 413             case SDLK_q:                                             /* quit */
 414             case SDLK_ESCAPE:
 415                 p_main->p_intf->b_die = 1;
 416                 break;
 417
 418             case SDLK_f:                             /* switch to fullscreen */
 419                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 420                 break;
 421
 422             case SDLK_c:                                 /* toggle grayscale */
 423                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 424                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 425                 break;
 426
 427             case SDLK_i:                                      /* toggle info */
 428                 p_vout->b_info = ! p_vout->b_info;
 429                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 430                 break;
 431
 432             case SDLK_s:                                   /* toggle scaling */
 433                 p_vout->b_scale = ! p_vout->b_scale;
 434                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 435                 break;
 436
 437             case SDLK_SPACE:                             /* toggle interface */
 438                 p_vout->b_interface = ! p_vout->b_interface;
 439                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 440                 break;
 441
 442             case SDLK_MENU:
 443                 p_main->p_intf->b_menu_change = 1;
 444                 break;
 445
 446             case SDLK_LEFT:
 447                 vout_Seek( -5 );
 448                 break;
 449
 450             case SDLK_RIGHT:
 451                 vout_Seek( 5 );
 452                 break;
 453
 454             case SDLK_UP:
 455                 vout_Seek( 60 );
 456                 break;
 457
 458             case SDLK_DOWN:
 459                 vout_Seek( -60 );
 460                 break;
 461
 462             case SDLK_F10: network_ChannelJoin( 0 ); break;
 463             case SDLK_F1:  network_ChannelJoin( 1 ); break;
 464             case SDLK_F2:  network_ChannelJoin( 2 ); break;
 465             case SDLK_F3:  network_ChannelJoin( 3 ); break;
 466             case SDLK_F4:  network_ChannelJoin( 4 ); break;
 467             case SDLK_F5:  network_ChannelJoin( 5 ); break;
 468             case SDLK_F6:  network_ChannelJoin( 6 ); break;
 469             case SDLK_F7:  network_ChannelJoin( 7 ); break;
 470             case SDLK_F8:  network_ChannelJoin( 8 ); break;
 471             case SDLK_F9:  network_ChannelJoin( 9 ); break;
 472
 473             default:
 474                 break;
 475             }
 476             break;
 477
 478         default:
 479             break;
 480         }
 481     }
 482
 483     /* Fullscreen change */
 484     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 485     {
 486         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 487
 488         SDL_WM_ToggleFullScreen(p_vout->p_sys->p_display);
 489
 490         p_vout->p_sys->b_cursor_autohidden = 0;
 491         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 492                         ! p_vout->p_sys->b_cursor_autohidden );
 493
 494         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 495     }
 496
 497     /* Pointer change */
 498     if( ! p_vout->p_sys->b_cursor_autohidden &&
 499         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 500     {
 501         /* Hide the mouse automatically */
 502         p_vout->p_sys->b_cursor_autohidden = 1;
 503         SDL_ShowCursor( 0 );
 504     }
 505
 506     return( 0 );
 507 }
 508
 509 /*****************************************************************************
 510  * vout_Render: render previously calculated output
 511  *****************************************************************************/
 512 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
 513 {
 514     ;
 515 }
 516
 517 /*****************************************************************************
 518  * vout_Display: displays previously rendered output
 519  *****************************************************************************
 520  * This function sends the currently rendered image to the display.
 521  *****************************************************************************/
 522 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 523 {
 524     int x, y, w, h;
 525     SDL_Rect disp;
 526
 527     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 528                        &x, &y, &w, &h );
 529     disp.x = x;
 530     disp.y = y;
 531     disp.w = w;
 532     disp.h = h;
 533
 534     if( p_vout->p_sys->p_overlay == NULL )
 535     {
 536         /* RGB picture */
 537         SDL_Flip( p_vout->p_sys->p_display );
 538     }
 539     else
 540     {
 541         /* Overlay picture */
 542         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 543         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 544         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 545     }
 546 }
 547
 548 /* following functions are local */
 549
 550 /*****************************************************************************
 551  * OpenDisplay: open and initialize SDL device
 552  *****************************************************************************
 553  * Open and initialize display according to preferences specified in the vout
 554  * thread fields.
 555  *****************************************************************************/
 556 static int OpenDisplay( vout_thread_t *p_vout )
 557 {
 558     Uint32 i_flags;
 559     int    i_bpp;
 560
 561     /* Initialize flags and cursor */
 562     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 563     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 564
 565     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 566                              SDL_DEFAULT_BPP, i_flags );
 567     if( i_bpp == 0 )
 568     {
 569         intf_ErrMsg( "vout error: no video mode available" );
 570         return( 1 );
 571     }
 572
 573     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 574                                                  p_vout->p_sys->i_height,
 575                                                  i_bpp, i_flags );
 576
 577     if( p_vout->p_sys->p_display == NULL )
 578     {
 579         intf_ErrMsg( "vout error: cannot set video mode" );
 580         return( 1 );
 581     }
 582
 583     SDL_LockSurface( p_vout->p_sys->p_display );
 584
 585     /* Choose the chroma we will try first. */
 586     switch( p_vout->render.i_chroma )
 587     {
 588         case FOURCC_YUY2:
 589         case FOURCC_YUNV:
 590             p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 591             break;
 592         case FOURCC_UYVY:
 593         case FOURCC_UYNV:
 594         case FOURCC_Y422:
 595             p_vout->output.i_chroma = SDL_UYVY_OVERLAY;
 596             break;
 597         case FOURCC_YVYU:
 598             p_vout->output.i_chroma = SDL_YVYU_OVERLAY;
 599             break;
 600         case FOURCC_YV12:
 601         case FOURCC_I420:
 602         case FOURCC_IYUV:
 603         default:
 604             p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 605             break;
 606     }
 607
 608     p_vout->p_sys->p_overlay =
 609         SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 610                               p_vout->p_sys->p_display );
 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_RGB2;
 649                 p_vout->output.pf_setpalette = SetPalette;
 650                 break;
 651             case 15:
 652                 p_vout->output.i_chroma = FOURCC_RV15;
 653                 break;
 654             case 16:
 655                 p_vout->output.i_chroma = FOURCC_RV16;
 656                 break;
 657             case 24:
 658                 p_vout->output.i_chroma = FOURCC_RV24;
 659                 break;
 660             case 32:
 661                 p_vout->output.i_chroma = FOURCC_RV32;
 662                 break;
 663             default:
 664                 intf_ErrMsg( "vout error: unknown screen depth" );
 665                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 666                 SDL_FreeSurface( p_vout->p_sys->p_display );
 667                 return( -1 );
 668         }
 669
 670         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
 671         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
 672         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
 673
 674         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 675                            VOUT_TITLE " (software RGB SDL output)" );
 676     }
 677     else
 678     {
 679         if( p_vout->p_sys->p_overlay->hw_overlay )
 680         {
 681             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 682                                VOUT_TITLE " (hardware YUV SDL output)" );
 683         }
 684         else
 685         {
 686             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 687                                VOUT_TITLE " (software YUV SDL output)" );
 688         }
 689     }
 690
 691     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 692
 693     return( 0 );
 694 }
 695
 696 /*****************************************************************************
 697  * CloseDisplay: close and reset SDL device
 698  *****************************************************************************
 699  * This function returns all resources allocated by OpenDisplay and restore
 700  * the original state of the device.
 701  *****************************************************************************/
 702 static void CloseDisplay( vout_thread_t *p_vout )
 703 {
 704     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 705     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 706     SDL_FreeSurface( p_vout->p_sys->p_display );
 707 }
 708
 709 /*****************************************************************************
 710  * NewPicture: allocate a picture
 711  *****************************************************************************
 712  * Returns 0 on success, -1 otherwise
 713  *****************************************************************************/
 714 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 715 {
 716     int i_width  = p_vout->output.i_width;
 717     int i_height = p_vout->output.i_height;
 718
 719     if( p_vout->p_sys->p_overlay == NULL )
 720     {
 721         /* RGB picture */
 722         if( p_vout->p_sys->i_surfaces )
 723         {
 724             /* We already allocated this surface, return */
 725             return -1;
 726         }
 727
 728         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 729
 730         if( p_pic->p_sys == NULL )
 731         {
 732             return -1;
 733         }
 734
 735         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 736         {
 737             case 8:
 738                 p_pic->p->i_pixel_bytes = 1;
 739                 break;
 740             case 15:
 741             case 16:
 742                 p_pic->p->i_pixel_bytes = 2;
 743                 break;
 744             case 24:
 745             case 32:
 746                 p_pic->p->i_pixel_bytes = 4;
 747                 break;
 748             default:
 749                 return( -1 );
 750         }
 751
 752         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 753         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 754         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 755
 756         if( p_pic->p->i_pitch ==
 757                 p_pic->p->i_pixel_bytes * p_vout->p_sys->p_display->w )
 758         {
 759             p_pic->p->b_margin = 0;
 760         }
 761         else
 762         {
 763             p_pic->p->b_margin = 1;
 764             p_pic->p->b_hidden = 1;
 765             p_pic->p->i_visible_bytes =
 766                 p_pic->p->i_pixel_bytes * p_vout->p_sys->p_display->w;
 767         }
 768
 769         p_vout->p_sys->i_surfaces++;
 770
 771         p_pic->i_planes = 1;
 772     }
 773     else
 774     {
 775         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 776
 777         if( p_pic->p_sys == NULL )
 778         {
 779             return -1;
 780         }
 781
 782         p_pic->p_sys->p_overlay =
 783             SDL_CreateYUVOverlay( i_width, i_height,
 784                                   p_vout->output.i_chroma,
 785                                   p_vout->p_sys->p_display );
 786
 787         if( p_pic->p_sys->p_overlay == NULL )
 788         {
 789             free( p_pic->p_sys );
 790             return -1;
 791         }
 792
 793         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 794
 795         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 796         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 797         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 798
 799         switch( p_vout->output.i_chroma )
 800         {
 801         case SDL_YV12_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[2];
 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[2];
 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[1];
 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[1];
 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         case SDL_IYUV_OVERLAY:
 821             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
 822             p_pic->p[Y_PLANE].b_margin = 0;
 823
 824             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 825             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 826             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 827             p_pic->p[U_PLANE].i_pixel_bytes = 1;
 828             p_pic->p[U_PLANE].b_margin = 0;
 829
 830             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 831             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 832             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 833             p_pic->p[V_PLANE].i_pixel_bytes = 1;
 834             p_pic->p[V_PLANE].b_margin = 0;
 835
 836             p_pic->i_planes = 3;
 837             break;
 838
 839         default:
 840             p_pic->p[Y_PLANE].i_pixel_bytes = 2;
 841             p_pic->p[Y_PLANE].b_margin = 0;
 842
 843             p_pic->i_planes = 1;
 844             break;
 845         }
 846     }
 847
 848     return 0;
 849 }
 850
 851 /*****************************************************************************
 852  * SetPalette: sets an 8 bpp palette
 853  *****************************************************************************/
 854 static void SetPalette( vout_thread_t *p_vout, u16 *red, u16 *green, u16 *blue )
 855 {
 856     SDL_Color colors[256];
 857     int i;
 858
 859     /* Fill colors with color information */
 860     for( i = 0; i < 256; i++ )
 861     {
 862         colors[ i ].r = red[ i ] >> 8;
 863         colors[ i ].g = green[ i ] >> 8;
 864         colors[ i ].b = blue[ i ] >> 8;
 865     }
 866
 867     /* Set palette */
 868     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 869     {
 870         intf_ErrMsg( "vout error: failed setting palette" );
 871     }
 872 }
 873