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 1.78 2002/01/05 03:49:18 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 5
  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 #define area p_main->p_intf->p_input->stream.p_selected_area
 101     off_t i_tell = area->i_tell;
 102
 103     i_tell += i_seek * (off_t)50 * p_main->p_intf->p_input->stream.i_mux_rate;
 104
 105     i_tell = ( i_tell <= area->i_start ) ? area->i_start
 106            : ( i_tell >= area->i_size ) ? area->i_size
 107            : i_tell;
 108
 109     input_Seek( p_main->p_intf->p_input, i_tell );
 110 #undef area
 111 }
 112
 113 /*****************************************************************************
 114  * Local prototypes.
 115  *****************************************************************************/
 116 static int  vout_Probe      ( probedata_t *p_data );
 117 static int  vout_Create     ( struct vout_thread_s * );
 118 static int  vout_Init       ( struct vout_thread_s * );
 119 static void vout_End        ( struct vout_thread_s * );
 120 static void vout_Destroy    ( struct vout_thread_s * );
 121 static int  vout_Manage     ( struct vout_thread_s * );
 122 static void vout_Render     ( struct vout_thread_s *, struct picture_s * );
 123 static void vout_Display    ( struct vout_thread_s *, struct picture_s * );
 124
 125 static int  SDLOpenDisplay      ( vout_thread_t *p_vout );
 126 static void SDLCloseDisplay     ( vout_thread_t *p_vout );
 127 static int  SDLNewPicture       ( vout_thread_t *p_vout, picture_t *p_pic );
 128
 129 /*****************************************************************************
 130  * Functions exported as capabilities. They are declared as static so that
 131  * we don't pollute the namespace too much.
 132  *****************************************************************************/
 133 void _M( vout_getfunctions )( function_list_t * p_function_list )
 134 {
 135     p_function_list->pf_probe = vout_Probe;
 136     p_function_list->functions.vout.pf_create     = vout_Create;
 137     p_function_list->functions.vout.pf_init       = vout_Init;
 138     p_function_list->functions.vout.pf_end        = vout_End;
 139     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 140     p_function_list->functions.vout.pf_manage     = vout_Manage;
 141     p_function_list->functions.vout.pf_render     = vout_Render;
 142     p_function_list->functions.vout.pf_display    = vout_Display;
 143 }
 144
 145 /*****************************************************************************
 146  * vout_Probe: probe the video driver and return a score
 147  *****************************************************************************
 148  * This function tries to initialize SDL and returns a score to the
 149  * plugin manager so that it can select the best plugin.
 150  *****************************************************************************/
 151 static int vout_Probe( probedata_t *p_data )
 152 {
 153     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 154     {
 155         return( 0 );
 156     }
 157
 158     return( 100 );
 159 }
 160
 161 /*****************************************************************************
 162  * vout_Create: allocate SDL video thread output method
 163  *****************************************************************************
 164  * This function allocate and initialize a SDL vout method. It uses some of the
 165  * vout properties to choose the correct mode, and change them according to the
 166  * mode actually used.
 167  *****************************************************************************/
 168 static int vout_Create( vout_thread_t *p_vout )
 169 {
 170     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 171     {
 172         return( 1 );
 173     }
 174
 175     /* Allocate structure */
 176     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 177     if( p_vout->p_sys == NULL )
 178     {
 179         intf_ErrMsg( "vout error: can't create p_sys (%s)", strerror(ENOMEM) );
 180         return( 1 );
 181     }
 182
 183     /* Initialize library */
 184     if( SDL_Init( SDL_INIT_VIDEO
 185 #ifndef WIN32
 186     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 187                 | SDL_INIT_EVENTTHREAD
 188 #endif
 189 #ifdef DEBUG
 190     /* In debug mode you may want vlc to dump a core instead of staying
 191      * stuck */
 192                 | SDL_INIT_NOPARACHUTE
 193 #endif
 194                 ) < 0 )
 195     {
 196         intf_ErrMsg( "vout error: can't initialize SDL (%s)", SDL_GetError() );
 197         free( p_vout->p_sys );
 198         return( 1 );
 199     }
 200
 201     p_vout->p_sys->b_cursor = 1;
 202     p_vout->p_sys->b_cursor_autohidden = 0;
 203     p_vout->p_sys->i_lastmoved = mdate();
 204
 205     if( p_vout->render.i_height * p_vout->render.i_aspect
 206          >= p_vout->render.i_width * VOUT_ASPECT_FACTOR )
 207     {
 208         p_vout->p_sys->i_width = p_vout->render.i_height
 209             * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR;
 210         p_vout->p_sys->i_height = p_vout->render.i_height;
 211     }
 212     else
 213     {
 214         p_vout->p_sys->i_width = p_vout->render.i_width;
 215         p_vout->p_sys->i_height = p_vout->render.i_width
 216             * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect;
 217     }
 218
 219 #if 0
 220     if( p_vout->p_sys->i_width <= 300 && p_vout->p_sys->i_height <= 300 )
 221     {
 222         p_vout->p_sys->i_width <<= 1;
 223         p_vout->p_sys->i_height <<= 1;
 224     }
 225     else if( p_vout->p_sys->i_width <= 400 && p_vout->p_sys->i_height <= 400 )
 226     {
 227         p_vout->p_sys->i_width += p_vout->p_sys->i_width >> 1;
 228         p_vout->p_sys->i_height += p_vout->p_sys->i_height >> 1;
 229     }
 230 #endif
 231
 232     if( SDLOpenDisplay( p_vout ) )
 233     {
 234         intf_ErrMsg( "vout error: can't set up SDL (%s)", SDL_GetError() );
 235         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 236         free( p_vout->p_sys );
 237         return( 1 );
 238     }
 239
 240     return( 0 );
 241 }
 242
 243 /*****************************************************************************
 244  * vout_Init: initialize SDL video thread output method
 245  *****************************************************************************
 246  * This function initialize the SDL display device.
 247  *****************************************************************************/
 248 static int vout_Init( vout_thread_t *p_vout )
 249 {
 250     int i_index;
 251     picture_t *p_pic;
 252
 253     p_vout->p_sys->i_surfaces = 0;
 254
 255     I_OUTPUTPICTURES = 0;
 256
 257     /* Initialize the output structure */
 258     if( p_vout->p_sys->p_overlay == NULL )
 259     {
 260         /* All we have is an RGB image with square pixels */
 261         p_vout->output.i_width  = p_vout->p_sys->i_width;
 262         p_vout->output.i_height = p_vout->p_sys->i_height;
 263         p_vout->output.i_aspect = p_vout->p_sys->i_width
 264                                    * VOUT_ASPECT_FACTOR
 265                                    / p_vout->p_sys->i_height;
 266     }
 267     else
 268     {
 269         /* We may need to convert the chroma, but at least we keep the
 270          * aspect ratio */
 271         p_vout->output.i_width  = p_vout->render.i_width;
 272         p_vout->output.i_height = p_vout->render.i_height;
 273         p_vout->output.i_aspect = p_vout->render.i_aspect;
 274     }
 275
 276     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 277     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 278     {
 279         p_pic = NULL;
 280
 281         /* Find an empty picture slot */
 282         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 283         {
 284             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 285             {
 286                 p_pic = p_vout->p_picture + i_index;
 287                 break;
 288             }
 289         }
 290
 291         /* Allocate the picture if we found one */
 292         if( p_pic == NULL || SDLNewPicture( p_vout, p_pic ) )
 293         {
 294             break;
 295         }
 296
 297         p_pic->i_status = DESTROYED_PICTURE;
 298         p_pic->i_type   = DIRECT_PICTURE;
 299
 300         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 301
 302         I_OUTPUTPICTURES++;
 303     }
 304
 305     return( 0 );
 306 }
 307
 308 /*****************************************************************************
 309  * vout_End: terminate Sys video thread output method
 310  *****************************************************************************
 311  * Terminate an output method created by vout_SDLCreate
 312  *****************************************************************************/
 313 static void vout_End( vout_thread_t *p_vout )
 314 {
 315     int i_index;
 316
 317     /* Free the output buffers we allocated */
 318     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 319     {
 320         i_index--;
 321         if( p_vout->p_sys->p_overlay == NULL )
 322         {
 323             /* RGB picture */
 324         }
 325         else
 326         {
 327             SDL_UnlockYUVOverlay(
 328                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 329             SDL_FreeYUVOverlay(
 330                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 331         }
 332         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 333     }
 334 }
 335
 336 /*****************************************************************************
 337  * vout_Destroy: destroy Sys video thread output method
 338  *****************************************************************************
 339  * Terminate an output method created by vout_SDLCreate
 340  *****************************************************************************/
 341 static void vout_Destroy( vout_thread_t *p_vout )
 342 {
 343     SDLCloseDisplay( p_vout );
 344
 345     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 346
 347     free( p_vout->p_sys );
 348 }
 349
 350 /*****************************************************************************
 351  * vout_Manage: handle Sys events
 352  *****************************************************************************
 353  * This function should be called regularly by video output thread. It returns
 354  * a non null value if an error occured.
 355  *****************************************************************************/
 356 static int vout_Manage( vout_thread_t *p_vout )
 357 {
 358     SDL_Event event;                                            /* SDL event */
 359
 360     /* Process events */
 361     while( SDL_PollEvent(&event) )
 362     {
 363         switch( event.type )
 364         {
 365         case SDL_VIDEORESIZE:                          /* Resizing of window */
 366             p_vout->p_sys->i_width = event.resize.w;
 367             p_vout->p_sys->i_height = event.resize.h;
 368             SDLCloseDisplay( p_vout );
 369             SDLOpenDisplay( p_vout );
 370             break;
 371
 372         case SDL_MOUSEMOTION:
 373             if( p_vout->p_sys->b_cursor &&
 374                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 375             {
 376                 if( p_vout->p_sys->b_cursor_autohidden )
 377                 {
 378                     p_vout->p_sys->b_cursor_autohidden = 0;
 379                     SDL_ShowCursor( 1 );
 380                 }
 381                 else
 382                 {
 383                     p_vout->p_sys->i_lastmoved = mdate();
 384                 }
 385             }
 386             break;
 387
 388         case SDL_MOUSEBUTTONUP:
 389             switch( event.button.button )
 390             {
 391             case SDL_BUTTON_RIGHT:
 392                 p_main->p_intf->b_menu_change = 1;
 393                 break;
 394             }
 395             break;
 396
 397         case SDL_MOUSEBUTTONDOWN:
 398             switch( event.button.button )
 399             {
 400             case SDL_BUTTON_LEFT:
 401                 /* In this part we will eventually manage
 402                  * clicks for DVD navigation for instance. For the
 403                  * moment just pause the stream. */
 404                 input_SetStatus( p_main->p_intf->p_input, INPUT_STATUS_PAUSE );
 405                 break;
 406
 407             case 4:
 408                 vout_Seek( 15 );
 409                 break;
 410
 411             case 5:
 412                 vout_Seek( -15 );
 413                 break;
 414             }
 415             break;
 416
 417         case SDL_QUIT:
 418             p_main->p_intf->b_die = 1;
 419             break;
 420
 421         case SDL_KEYDOWN:                             /* if a key is pressed */
 422
 423             switch( event.key.keysym.sym )
 424             {
 425             case SDLK_q:                                             /* quit */
 426             case SDLK_ESCAPE:
 427                 p_main->p_intf->b_die = 1;
 428                 break;
 429
 430             case SDLK_f:                             /* switch to fullscreen */
 431                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 432                 break;
 433
 434             case SDLK_c:                                 /* toggle grayscale */
 435                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 436                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 437                 break;
 438
 439             case SDLK_i:                                      /* toggle info */
 440                 p_vout->b_info = ! p_vout->b_info;
 441                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 442                 break;
 443
 444             case SDLK_s:                                   /* toggle scaling */
 445                 p_vout->b_scale = ! p_vout->b_scale;
 446                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 447                 break;
 448
 449             case SDLK_SPACE:                             /* toggle interface */
 450                 p_vout->b_interface = ! p_vout->b_interface;
 451                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 452                 break;
 453
 454             case SDLK_MENU:
 455                 p_main->p_intf->b_menu_change = 1;
 456                 break;
 457
 458             case SDLK_LEFT:
 459                 vout_Seek( -5 );
 460                 break;
 461
 462             case SDLK_RIGHT:
 463                 vout_Seek( 5 );
 464                 break;
 465
 466             case SDLK_UP:
 467                 vout_Seek( 60 );
 468                 break;
 469
 470             case SDLK_DOWN:
 471                 vout_Seek( -60 );
 472                 break;
 473
 474             case SDLK_F10: network_ChannelJoin( 0 ); break;
 475             case SDLK_F1:  network_ChannelJoin( 1 ); break;
 476             case SDLK_F2:  network_ChannelJoin( 2 ); break;
 477             case SDLK_F3:  network_ChannelJoin( 3 ); break;
 478             case SDLK_F4:  network_ChannelJoin( 4 ); break;
 479             case SDLK_F5:  network_ChannelJoin( 5 ); break;
 480             case SDLK_F6:  network_ChannelJoin( 6 ); break;
 481             case SDLK_F7:  network_ChannelJoin( 7 ); break;
 482             case SDLK_F8:  network_ChannelJoin( 8 ); break;
 483             case SDLK_F9:  network_ChannelJoin( 9 ); break;
 484
 485             default:
 486                 intf_DbgMsg( "unhandled key %i", event.key.keysym.sym );
 487                 break;
 488             }
 489             break;
 490
 491         default:
 492             break;
 493         }
 494     }
 495
 496     /* Fullscreen change */
 497     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 498     {
 499         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 500
 501         SDL_WM_ToggleFullScreen(p_vout->p_sys->p_display);
 502
 503         p_vout->p_sys->b_cursor_autohidden = 0;
 504         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 505                         ! p_vout->p_sys->b_cursor_autohidden );
 506
 507         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 508     }
 509
 510     /* Pointer change */
 511     if( ! p_vout->p_sys->b_cursor_autohidden &&
 512         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 513     {
 514         /* Hide the mouse automatically */
 515         p_vout->p_sys->b_cursor_autohidden = 1;
 516         SDL_ShowCursor( 0 );
 517     }
 518
 519     return( 0 );
 520 }
 521
 522 /*****************************************************************************
 523  * vout_Render: render previously calculated output
 524  *****************************************************************************/
 525 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
 526 {
 527     ;
 528 }
 529
 530 /*****************************************************************************
 531  * vout_Display: displays previously rendered output
 532  *****************************************************************************
 533  * This function sends the currently rendered image to the display.
 534  *****************************************************************************/
 535 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 536 {
 537     int x, y, w, h;
 538     SDL_Rect disp;
 539
 540     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 541                        &x, &y, &w, &h );
 542     disp.x = x;
 543     disp.y = y;
 544     disp.w = w;
 545     disp.h = h;
 546
 547     if( p_vout->p_sys->p_overlay == NULL )
 548     {
 549         /* RGB picture */
 550         SDL_Flip( p_vout->p_sys->p_display );
 551     }
 552     else
 553     {
 554         /* Overlay picture */
 555         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 556         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 557         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 558     }
 559 }
 560
 561 /* following functions are local */
 562
 563 /*****************************************************************************
 564  * SDLOpenDisplay: open and initialize SDL device
 565  *****************************************************************************
 566  * Open and initialize display according to preferences specified in the vout
 567  * thread fields.
 568  *****************************************************************************/
 569 static int SDLOpenDisplay( vout_thread_t *p_vout )
 570 {
 571     Uint32 i_flags;
 572     int    i_bpp;
 573
 574     /* Initialize flags and cursor */
 575     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 576     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 577
 578     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 579                              SDL_DEFAULT_BPP, i_flags );
 580     if( i_bpp == 0 )
 581     {
 582         intf_ErrMsg( "vout error: no video mode available" );
 583         return( 1 );
 584     }
 585
 586     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 587                                                  p_vout->p_sys->i_height,
 588                                                  i_bpp, i_flags );
 589
 590     if( p_vout->p_sys->p_display == NULL )
 591     {
 592         intf_ErrMsg( "vout error: cannot set video mode" );
 593         return( 1 );
 594     }
 595
 596     SDL_LockSurface( p_vout->p_sys->p_display );
 597
 598     /* Choose the chroma we will try first. */
 599     switch( p_vout->render.i_chroma )
 600     {
 601         case FOURCC_YUY2:
 602         case FOURCC_YUNV:
 603             p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 604             break;
 605         case FOURCC_UYVY:
 606         case FOURCC_UYNV:
 607         case FOURCC_Y422:
 608             p_vout->output.i_chroma = SDL_UYVY_OVERLAY;
 609             break;
 610         case FOURCC_YVYU:
 611             p_vout->output.i_chroma = SDL_YVYU_OVERLAY;
 612             break;
 613         case FOURCC_YV12:
 614         case FOURCC_I420:
 615         case FOURCC_IYUV:
 616         default:
 617             p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 618             break;
 619     }
 620
 621     p_vout->p_sys->p_overlay =
 622         SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 623                               p_vout->p_sys->p_display );
 624
 625     /* FIXME: if the first overlay we find is software, don't stop,
 626      * because we may find a hardware one later ... */
 627
 628     /* If this best choice failed, fall back to other chromas */
 629     if( p_vout->p_sys->p_overlay == NULL )
 630     {
 631         p_vout->output.i_chroma = SDL_IYUV_OVERLAY;
 632         p_vout->p_sys->p_overlay =
 633             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 634                                   p_vout->p_sys->p_display );
 635     }
 636
 637     if( p_vout->p_sys->p_overlay == NULL )
 638     {
 639         p_vout->output.i_chroma = SDL_YV12_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_YUY2_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         intf_WarnMsg( 3, "vout warning: no SDL overlay for 0x%.8x (%4.4s)",
 656                          p_vout->render.i_chroma,
 657                          (char*)&p_vout->render.i_chroma );
 658
 659         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 660         {
 661             case 8:
 662                 p_vout->output.i_chroma = FOURCC_BI_RGB;
 663                 break;
 664             case 15:
 665                 p_vout->output.i_chroma = FOURCC_RV15;
 666                 break;
 667             case 16:
 668                 p_vout->output.i_chroma = FOURCC_RV16;
 669                 break;
 670             case 24:
 671                 p_vout->output.i_chroma = FOURCC_BI_BITFIELDS;
 672                 break;
 673             case 32:
 674                 p_vout->output.i_chroma = FOURCC_BI_BITFIELDS;
 675                 break;
 676             default:
 677                 intf_ErrMsg( "vout error: unknown screen depth" );
 678                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 679                 SDL_FreeSurface( p_vout->p_sys->p_display );
 680                 return( -1 );
 681         }
 682
 683         p_vout->p_sys->i_red_mask = p_vout->p_sys->p_display->format->Rmask;
 684         p_vout->p_sys->i_green_mask = p_vout->p_sys->p_display->format->Gmask;
 685         p_vout->p_sys->i_blue_mask = p_vout->p_sys->p_display->format->Bmask;
 686
 687         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 688                            VOUT_TITLE " (software RGB SDL output)" );
 689     }
 690     else
 691     {
 692         if( p_vout->p_sys->p_overlay->hw_overlay )
 693         {
 694             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 695                                VOUT_TITLE " (hardware YUV SDL output)" );
 696         }
 697         else
 698         {
 699             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 700                                VOUT_TITLE " (software YUV SDL output)" );
 701         }
 702     }
 703
 704     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 705
 706     return( 0 );
 707 }
 708
 709 /*****************************************************************************
 710  * SDLCloseDisplay: close and reset SDL device
 711  *****************************************************************************
 712  * This function returns all resources allocated by SDLOpenDisplay and restore
 713  * the original state of the device.
 714  *****************************************************************************/
 715 static void SDLCloseDisplay( vout_thread_t *p_vout )
 716 {
 717     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 718     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 719     SDL_FreeSurface( p_vout->p_sys->p_display );
 720 }
 721
 722 /*****************************************************************************
 723  * SDLNewPicture: allocate a picture
 724  *****************************************************************************
 725  * Returns 0 on success, -1 otherwise
 726  *****************************************************************************/
 727 static int SDLNewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 728 {
 729     int i_width  = p_vout->output.i_width;
 730     int i_height = p_vout->output.i_height;
 731
 732     if( p_vout->p_sys->p_overlay == NULL )
 733     {
 734         /* RGB picture */
 735         if( p_vout->p_sys->i_surfaces )
 736         {
 737             /* We already allocated this surface, return */
 738             return -1;
 739         }
 740
 741         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 742
 743         if( p_pic->p_sys == NULL )
 744         {
 745             return -1;
 746         }
 747
 748         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 749         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 750         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 751         p_pic->p->i_pixel_bytes = 2;
 752
 753         if( p_pic->p->i_pitch == 2 * p_vout->p_sys->p_display->w )
 754         {
 755             p_pic->p->b_margin = 0;
 756         }
 757         else
 758         {
 759             p_pic->p->b_margin = 1;
 760             p_pic->p->b_hidden = 1;
 761             p_pic->p->i_visible_bytes = 2 * p_vout->p_sys->p_display->w;
 762         }
 763
 764         p_pic->p->i_red_mask = p_vout->p_sys->p_display->format->Rmask;
 765         p_pic->p->i_green_mask = p_vout->p_sys->p_display->format->Gmask;
 766         p_pic->p->i_blue_mask = p_vout->p_sys->p_display->format->Bmask;
 767
 768         p_vout->p_sys->i_surfaces++;
 769
 770         p_pic->i_planes = 1;
 771     }
 772     else
 773     {
 774         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 775
 776         if( p_pic->p_sys == NULL )
 777         {
 778             return -1;
 779         }
 780
 781         p_pic->p_sys->p_overlay =
 782             SDL_CreateYUVOverlay( i_width, i_height,
 783                                   p_vout->output.i_chroma,
 784                                   p_vout->p_sys->p_display );
 785
 786         if( p_pic->p_sys->p_overlay == NULL )
 787         {
 788             free( p_pic->p_sys );
 789             return -1;
 790         }
 791
 792         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 793
 794         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 795         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 796         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 797
 798         switch( p_vout->output.i_chroma )
 799         {
 800         case SDL_YV12_OVERLAY:
 801             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
 802             p_pic->p[Y_PLANE].b_margin = 0;
 803
 804             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 805             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 806             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 807             p_pic->p[U_PLANE].i_pixel_bytes = 1;
 808             p_pic->p[U_PLANE].b_margin = 0;
 809
 810             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 811             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 812             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 813             p_pic->p[V_PLANE].i_pixel_bytes = 1;
 814             p_pic->p[V_PLANE].b_margin = 0;
 815
 816             p_pic->i_planes = 3;
 817             break;
 818
 819         case SDL_IYUV_OVERLAY:
 820             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
 821             p_pic->p[Y_PLANE].b_margin = 0;
 822
 823             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 824             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 825             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 826             p_pic->p[U_PLANE].i_pixel_bytes = 1;
 827             p_pic->p[U_PLANE].b_margin = 0;
 828
 829             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 830             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 831             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 832             p_pic->p[V_PLANE].i_pixel_bytes = 1;
 833             p_pic->p[V_PLANE].b_margin = 0;
 834
 835             p_pic->i_planes = 3;
 836             break;
 837
 838         default:
 839             p_pic->p[Y_PLANE].i_pixel_bytes = 2;
 840             p_pic->p[Y_PLANE].b_margin = 0;
 841
 842             p_pic->i_planes = 1;
 843             break;
 844         }
 845     }
 846
 847     return 0;
 848 }
 849