git.sesse.net Git - vlc/blob - modules/video_output/sdl.c

   1 /*****************************************************************************
   2  * sdl.c: SDL video output display method
   3  *****************************************************************************
   4  * Copyright (C) 1998-2001 VideoLAN
   5  * $Id: sdl.c,v 1.6 2003/01/09 14:05:31 sam Exp $
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Pierre Baillet <oct@zoy.org>
   9  *          Arnaud de Bossoreille de Ribou <bozo@via.ecp.fr>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #include <errno.h>                                                 /* ENOMEM */
  30 #include <stdlib.h>                                                /* free() */
  31 #include <string.h>                                            /* strerror() */
  32
  33 #include <vlc/vlc.h>
  34 #include <vlc/intf.h>
  35 #include <vlc/vout.h>
  36
  37 #include <sys/types.h>
  38 #ifndef WIN32
  39 #   include <netinet/in.h>                            /* BSD: struct in_addr */
  40 #endif
  41
  42 #include SDL_INCLUDE_FILE
  43
  44 #include "netutils.h"
  45
  46 #define SDL_MAX_DIRECTBUFFERS 10
  47 #define SDL_DEFAULT_BPP 16
  48
  49 /*****************************************************************************
  50  * vout_sys_t: video output SDL method descriptor
  51  *****************************************************************************
  52  * This structure is part of the video output thread descriptor.
  53  * It describes the SDL specific properties of an output thread.
  54  *****************************************************************************/
  55 struct vout_sys_t
  56 {
  57     SDL_Surface *   p_display;                             /* display device */
  58
  59     int i_width;
  60     int i_height;
  61
  62     /* For YUV output */
  63     SDL_Overlay * p_overlay;   /* An overlay we keep to grab the XVideo port */
  64
  65     /* For RGB output */
  66     int i_surfaces;
  67
  68     vlc_bool_t  b_cursor;
  69     vlc_bool_t  b_cursor_autohidden;
  70     mtime_t     i_lastmoved;
  71     mtime_t     i_lastpressed;                        /* to track dbl-clicks */
  72 };
  73
  74 /*****************************************************************************
  75  * picture_sys_t: direct buffer method descriptor
  76  *****************************************************************************
  77  * This structure is part of the picture descriptor, it describes the
  78  * SDL specific properties of a direct buffer.
  79  *****************************************************************************/
  80 struct picture_sys_t
  81 {
  82     SDL_Overlay *p_overlay;
  83 };
  84
  85 /*****************************************************************************
  86  * Local prototypes
  87  *****************************************************************************/
  88 static int  Open      ( vlc_object_t * );
  89 static void Close     ( vlc_object_t * );
  90 static int  Init      ( vout_thread_t * );
  91 static void End       ( vout_thread_t * );
  92 static int  Manage    ( vout_thread_t * );
  93 static void Display   ( vout_thread_t *, picture_t * );
  94
  95 static int  OpenDisplay     ( vout_thread_t * );
  96 static void CloseDisplay    ( vout_thread_t * );
  97 static int  NewPicture      ( vout_thread_t *, picture_t * );
  98 static void SetPalette      ( vout_thread_t *,
  99                               uint16_t *, uint16_t *, uint16_t * );
 100
 101 /*****************************************************************************
 102  * Module descriptor
 103  *****************************************************************************/
 104 vlc_module_begin();
 105     set_description( _("Simple DirectMedia Layer video module") );
 106     set_capability( "video output", 60 );
 107     add_shortcut( "sdl" );
 108     set_callbacks( Open, Close );
 109 vlc_module_end();
 110
 111 /*****************************************************************************
 112  * OpenVideo: allocate SDL video thread output method
 113  *****************************************************************************
 114  * This function allocate and initialize a SDL vout method. It uses some of the
 115  * vout properties to choose the correct mode, and change them according to the
 116  * mode actually used.
 117  *****************************************************************************/
 118 static int Open ( vlc_object_t *p_this )
 119 {
 120     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 121
 122 #ifdef HAVE_SETENV
 123     char *psz_method;
 124 #endif
 125
 126     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 127     {
 128         return( 1 );
 129     }
 130
 131     /* Allocate structure */
 132     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 133     if( p_vout->p_sys == NULL )
 134     {
 135         msg_Err( p_vout, "out of memory" );
 136         return( 1 );
 137     }
 138
 139     p_vout->pf_init = Init;
 140     p_vout->pf_end = End;
 141     p_vout->pf_manage = Manage;
 142     p_vout->pf_render = NULL;
 143     p_vout->pf_display = Display;
 144
 145 #ifdef HAVE_SETENV
 146     psz_method = config_GetPsz( p_vout, "vout" );
 147     if( psz_method )
 148     {
 149         while( *psz_method && *psz_method != ':' )
 150         {
 151             psz_method++;
 152         }
 153
 154         if( *psz_method )
 155         {
 156             setenv( "SDL_VIDEODRIVER", psz_method + 1, 1 );
 157         }
 158     }
 159 #endif
 160
 161     /* Initialize library */
 162     if( SDL_Init( SDL_INIT_VIDEO
 163 #ifndef WIN32
 164     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 165                 | SDL_INIT_EVENTTHREAD
 166 #endif
 167 #ifdef DEBUG
 168     /* In debug mode you may want vlc to dump a core instead of staying
 169      * stuck */
 170                 | SDL_INIT_NOPARACHUTE
 171 #endif
 172                 ) < 0 )
 173     {
 174         msg_Err( p_vout, "cannot initialize SDL (%s)", SDL_GetError() );
 175         free( p_vout->p_sys );
 176         return( 1 );
 177     }
 178
 179     p_vout->p_sys->b_cursor = 1;
 180     p_vout->p_sys->b_cursor_autohidden = 0;
 181     p_vout->p_sys->i_lastmoved = mdate();
 182
 183     if( OpenDisplay( p_vout ) )
 184     {
 185         msg_Err( p_vout, "cannot set up SDL (%s)", SDL_GetError() );
 186         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 187         free( p_vout->p_sys );
 188         return( 1 );
 189     }
 190
 191     return( 0 );
 192 }
 193
 194 /*****************************************************************************
 195  * Init: initialize SDL video thread output method
 196  *****************************************************************************
 197  * This function initialize the SDL display device.
 198  *****************************************************************************/
 199 static int Init( vout_thread_t *p_vout )
 200 {
 201     int i_index;
 202     picture_t *p_pic;
 203
 204     p_vout->p_sys->i_surfaces = 0;
 205
 206     I_OUTPUTPICTURES = 0;
 207
 208     /* Initialize the output structure */
 209     if( p_vout->p_sys->p_overlay == NULL )
 210     {
 211         /* All we have is an RGB image with square pixels */
 212         p_vout->output.i_width  = p_vout->p_sys->i_width;
 213         p_vout->output.i_height = p_vout->p_sys->i_height;
 214         p_vout->output.i_aspect = p_vout->output.i_width
 215                                    * VOUT_ASPECT_FACTOR
 216                                    / p_vout->output.i_height;
 217     }
 218     else
 219     {
 220         /* We may need to convert the chroma, but at least we keep the
 221          * aspect ratio */
 222         p_vout->output.i_width  = p_vout->render.i_width;
 223         p_vout->output.i_height = p_vout->render.i_height;
 224         p_vout->output.i_aspect = p_vout->render.i_aspect;
 225     }
 226
 227     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 228     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 229     {
 230         p_pic = NULL;
 231
 232         /* Find an empty picture slot */
 233         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 234         {
 235             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 236             {
 237                 p_pic = p_vout->p_picture + i_index;
 238                 break;
 239             }
 240         }
 241
 242         /* Allocate the picture if we found one */
 243         if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 244         {
 245             break;
 246         }
 247
 248         p_pic->i_status = DESTROYED_PICTURE;
 249         p_pic->i_type   = DIRECT_PICTURE;
 250
 251         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 252
 253         I_OUTPUTPICTURES++;
 254     }
 255
 256     return( 0 );
 257 }
 258
 259 /*****************************************************************************
 260  * End: terminate Sys video thread output method
 261  *****************************************************************************
 262  * Terminate an output method created by OpenVideo
 263  *****************************************************************************/
 264 static void End( vout_thread_t *p_vout )
 265 {
 266     int i_index;
 267
 268     /* Free the output buffers we allocated */
 269     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 270     {
 271         i_index--;
 272         if( p_vout->p_sys->p_overlay == NULL )
 273         {
 274             /* RGB picture */
 275         }
 276         else
 277         {
 278             SDL_UnlockYUVOverlay(
 279                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 280             SDL_FreeYUVOverlay(
 281                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 282         }
 283         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 284     }
 285 }
 286
 287 /*****************************************************************************
 288  * CloseVideo: destroy Sys video thread output method
 289  *****************************************************************************
 290  * Terminate an output method created by vout_SDLCreate
 291  *****************************************************************************/
 292 static void Close ( vlc_object_t *p_this )
 293 {
 294     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 295
 296     CloseDisplay( p_vout );
 297     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 298
 299     free( p_vout->p_sys );
 300 }
 301
 302 /*****************************************************************************
 303  * Manage: handle Sys events
 304  *****************************************************************************
 305  * This function should be called regularly by video output thread. It returns
 306  * a non null value if an error occured.
 307  *****************************************************************************/
 308 static int Manage( vout_thread_t *p_vout )
 309 {
 310     SDL_Event event;                                            /* SDL event */
 311     vlc_value_t val;
 312     int i_width, i_height, i_x, i_y;
 313
 314     /* Process events */
 315     while( SDL_PollEvent(&event) )
 316     {
 317         switch( event.type )
 318         {
 319         case SDL_VIDEORESIZE:                          /* Resizing of window */
 320             /* Update dimensions */
 321             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 322             p_vout->i_window_width = p_vout->p_sys->i_width = event.resize.w;
 323             p_vout->i_window_height = p_vout->p_sys->i_height = event.resize.h;
 324             break;
 325
 326         case SDL_MOUSEMOTION:
 327             vout_PlacePicture( p_vout, p_vout->p_sys->i_width,
 328                                p_vout->p_sys->i_height,
 329                                &i_x, &i_y, &i_width, &i_height );
 330
 331             val.i_int = ( event.motion.x - i_x )
 332                          * p_vout->render.i_width / i_width;
 333             var_Set( p_vout, "mouse-x", val );
 334             val.i_int = ( event.motion.y - i_y )
 335                          * p_vout->render.i_height / i_height;
 336             var_Set( p_vout, "mouse-y", val );
 337
 338             val.b_bool = VLC_TRUE;
 339             var_Set( p_vout, "mouse-moved", val );
 340
 341             if( p_vout->p_sys->b_cursor &&
 342                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 343             {
 344                 if( p_vout->p_sys->b_cursor_autohidden )
 345                 {
 346                     p_vout->p_sys->b_cursor_autohidden = 0;
 347                     SDL_ShowCursor( 1 );
 348                 }
 349                 else
 350                 {
 351                     p_vout->p_sys->i_lastmoved = mdate();
 352                 }
 353             }
 354             break;
 355
 356         case SDL_MOUSEBUTTONUP:
 357             switch( event.button.button )
 358             {
 359             case SDL_BUTTON_LEFT:
 360                 val.b_bool = VLC_TRUE;
 361                 var_Set( p_vout, "mouse-clicked", val );
 362                 break;
 363
 364             case SDL_BUTTON_RIGHT:
 365                 {
 366                     intf_thread_t *p_intf;
 367                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 368                                                       FIND_ANYWHERE );
 369                     if( p_intf )
 370                     {
 371                         p_intf->b_menu_change = 1;
 372                         vlc_object_release( p_intf );
 373                     }
 374                 }
 375                 break;
 376             }
 377             break;
 378
 379         case SDL_MOUSEBUTTONDOWN:
 380             switch( event.button.button )
 381             {
 382             case SDL_BUTTON_LEFT:
 383                 /* In this part we will eventually manage
 384                  * clicks for DVD navigation for instance. */
 385
 386                 /* detect double-clicks */
 387                 if( ( mdate() - p_vout->p_sys->i_lastpressed ) < 300000 )
 388                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 389
 390                 p_vout->p_sys->i_lastpressed = mdate();
 391                 break;
 392
 393             case 4:
 394                 input_Seek( p_vout, 15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 395                 break;
 396
 397             case 5:
 398                 input_Seek( p_vout, -15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 399                 break;
 400             }
 401             break;
 402
 403         case SDL_QUIT:
 404             p_vout->p_vlc->b_die = 1;
 405             break;
 406
 407         case SDL_KEYDOWN:                             /* if a key is pressed */
 408
 409             switch( event.key.keysym.sym )
 410             {
 411             case SDLK_ESCAPE:
 412                 if( p_vout->b_fullscreen )
 413                 {
 414                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 415                 }
 416                 else
 417                 {
 418                     p_vout->p_vlc->b_die = 1;
 419                 }
 420                 break;
 421
 422             case SDLK_q:                                             /* quit */
 423                 p_vout->p_vlc->b_die = 1;
 424                 break;
 425
 426             case SDLK_f:                             /* switch to fullscreen */
 427                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 428                 break;
 429
 430             case SDLK_c:                                 /* toggle grayscale */
 431                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 432                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 433                 break;
 434
 435             case SDLK_i:                                      /* toggle info */
 436                 p_vout->b_info = ! p_vout->b_info;
 437                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 438                 break;
 439
 440             case SDLK_s:                                   /* toggle scaling */
 441                 p_vout->b_scale = ! p_vout->b_scale;
 442                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 443                 break;
 444
 445             case SDLK_SPACE:                             /* toggle interface */
 446                 p_vout->b_interface = ! p_vout->b_interface;
 447                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 448                 break;
 449
 450             case SDLK_MENU:
 451                 {
 452                     intf_thread_t *p_intf;
 453                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 454                                                       FIND_ANYWHERE );
 455                     if( p_intf != NULL )
 456                     {
 457                         p_intf->b_menu_change = 1;
 458                         vlc_object_release( p_intf );
 459                     }
 460                 }
 461                 break;
 462
 463             case SDLK_LEFT:
 464                 input_Seek( p_vout, -5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 465                 break;
 466
 467             case SDLK_RIGHT:
 468                 input_Seek( p_vout, 5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 469                 break;
 470
 471             case SDLK_UP:
 472                 input_Seek( p_vout, 60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 473                 break;
 474
 475             case SDLK_DOWN:
 476                 input_Seek( p_vout, -60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 477                 break;
 478
 479             case SDLK_F1: network_ChannelJoin( p_vout, 1 ); break;
 480             case SDLK_F2: network_ChannelJoin( p_vout, 2 ); break;
 481             case SDLK_F3: network_ChannelJoin( p_vout, 3 ); break;
 482             case SDLK_F4: network_ChannelJoin( p_vout, 4 ); break;
 483             case SDLK_F5: network_ChannelJoin( p_vout, 5 ); break;
 484             case SDLK_F6: network_ChannelJoin( p_vout, 6 ); break;
 485             case SDLK_F7: network_ChannelJoin( p_vout, 7 ); break;
 486             case SDLK_F8: network_ChannelJoin( p_vout, 8 ); break;
 487             case SDLK_F9: network_ChannelJoin( p_vout, 9 ); break;
 488             case SDLK_F10: network_ChannelJoin( p_vout, 10 ); break;
 489             case SDLK_F11: network_ChannelJoin( p_vout, 11 ); break;
 490             case SDLK_F12: network_ChannelJoin( p_vout, 12 ); break;
 491
 492             case SDLK_b:
 493                 {
 494                     aout_instance_t * p_aout;
 495                     audio_volume_t i_volume;
 496                     p_aout = vlc_object_find( p_vout, VLC_OBJECT_AOUT,
 497                                                       FIND_ANYWHERE );
 498                     if( p_aout != NULL )
 499                     {
 500                         if ( !aout_VolumeDown( p_aout, 1, &i_volume ) )
 501                         {
 502                             msg_Dbg( p_vout, "audio volume is now %d", i_volume );
 503                         }
 504                         else
 505                         {
 506                             msg_Dbg( p_vout, "audio volume: operation not supported" );
 507                         }
 508                         vlc_object_release( (vlc_object_t *)p_aout );
 509                     }
 510                 }
 511                 break;
 512
 513             case SDLK_n:
 514                 {
 515                     aout_instance_t * p_aout;
 516                     audio_volume_t i_volume;
 517                     p_aout = vlc_object_find( p_vout, VLC_OBJECT_AOUT,
 518                                                       FIND_ANYWHERE );
 519                     if( p_aout != NULL )
 520                     {
 521                         if ( !aout_VolumeUp( p_aout, 1, &i_volume ) )
 522                         {
 523                             msg_Dbg( p_vout, "audio volume is now %d", i_volume );
 524                         }
 525                         else
 526                         {
 527                             msg_Dbg( p_vout, "audio volume: operation not supported" );
 528                         }
 529                         vlc_object_release( (vlc_object_t *)p_aout );
 530                     }
 531                 }
 532                 break;
 533
 534              default:
 535                 break;
 536             }
 537             break;
 538
 539         default:
 540             break;
 541         }
 542     }
 543
 544     /* Fullscreen change */
 545     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 546     {
 547         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 548
 549         p_vout->p_sys->b_cursor_autohidden = 0;
 550         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 551                         ! p_vout->p_sys->b_cursor_autohidden );
 552
 553         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 554         p_vout->i_changes |= VOUT_SIZE_CHANGE;
 555     }
 556
 557     /*
 558      * Size change
 559      */
 560     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 561     {
 562         msg_Dbg( p_vout, "video display resized (%dx%d)",
 563                  p_vout->p_sys->i_width, p_vout->p_sys->i_height );
 564
 565         CloseDisplay( p_vout );
 566         OpenDisplay( p_vout );
 567
 568         /* We don't need to signal the vout thread about the size change if
 569          * we can handle rescaling ourselves */
 570         if( p_vout->p_sys->p_overlay != NULL )
 571             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 572
 573     }
 574
 575     /* Pointer change */
 576     if( ! p_vout->p_sys->b_cursor_autohidden &&
 577         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 578     {
 579         /* Hide the mouse automatically */
 580         p_vout->p_sys->b_cursor_autohidden = 1;
 581         SDL_ShowCursor( 0 );
 582     }
 583
 584     return( 0 );
 585 }
 586
 587 /*****************************************************************************
 588  * Display: displays previously rendered output
 589  *****************************************************************************
 590  * This function sends the currently rendered image to the display.
 591  *****************************************************************************/
 592 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 593 {
 594     int x, y, w, h;
 595     SDL_Rect disp;
 596
 597     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 598                        &x, &y, &w, &h );
 599     disp.x = x;
 600     disp.y = y;
 601     disp.w = w;
 602     disp.h = h;
 603
 604     if( p_vout->p_sys->p_overlay == NULL )
 605     {
 606         /* RGB picture */
 607         SDL_Flip( p_vout->p_sys->p_display );
 608     }
 609     else
 610     {
 611         /* Overlay picture */
 612         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 613         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 614         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 615     }
 616 }
 617
 618 /* following functions are local */
 619
 620 /*****************************************************************************
 621  * OpenDisplay: open and initialize SDL device
 622  *****************************************************************************
 623  * Open and initialize display according to preferences specified in the vout
 624  * thread fields.
 625  *****************************************************************************/
 626 static int OpenDisplay( vout_thread_t *p_vout )
 627 {
 628     Uint32 i_flags;
 629     int    i_bpp;
 630
 631     /* Set main window's size */
 632     p_vout->p_sys->i_width = p_vout->b_fullscreen ? p_vout->output.i_width :
 633                                                     p_vout->i_window_width;
 634     p_vout->p_sys->i_height = p_vout->b_fullscreen ? p_vout->output.i_height :
 635                                                      p_vout->i_window_height;
 636
 637     /* Initialize flags and cursor */
 638     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 639     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 640
 641     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 642                              SDL_DEFAULT_BPP, i_flags );
 643     if( i_bpp == 0 )
 644     {
 645         msg_Err( p_vout, "no video mode available" );
 646         return( 1 );
 647     }
 648
 649     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 650                                                  p_vout->p_sys->i_height,
 651                                                  i_bpp, i_flags );
 652
 653     if( p_vout->p_sys->p_display == NULL )
 654     {
 655         msg_Err( p_vout, "cannot set video mode" );
 656         return( 1 );
 657     }
 658
 659     SDL_LockSurface( p_vout->p_sys->p_display );
 660
 661     /* Choose the chroma we will try first. */
 662     switch( p_vout->render.i_chroma )
 663     {
 664         case VLC_FOURCC('Y','U','Y','2'):
 665         case VLC_FOURCC('Y','U','N','V'):
 666             p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 667             break;
 668         case VLC_FOURCC('U','Y','V','Y'):
 669         case VLC_FOURCC('U','Y','N','V'):
 670         case VLC_FOURCC('Y','4','2','2'):
 671             p_vout->output.i_chroma = SDL_UYVY_OVERLAY;
 672             break;
 673         case VLC_FOURCC('Y','V','Y','U'):
 674             p_vout->output.i_chroma = SDL_YVYU_OVERLAY;
 675             break;
 676         case VLC_FOURCC('Y','V','1','2'):
 677         case VLC_FOURCC('I','4','2','0'):
 678         case VLC_FOURCC('I','Y','U','V'):
 679         default:
 680             p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 681             break;
 682     }
 683
 684     p_vout->p_sys->p_overlay =
 685         SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 686                               p_vout->p_sys->p_display );
 687     /* FIXME: if the first overlay we find is software, don't stop,
 688      * because we may find a hardware one later ... */
 689
 690     /* If this best choice failed, fall back to other chromas */
 691     if( p_vout->p_sys->p_overlay == NULL )
 692     {
 693         p_vout->output.i_chroma = SDL_IYUV_OVERLAY;
 694         p_vout->p_sys->p_overlay =
 695             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 696                                   p_vout->p_sys->p_display );
 697     }
 698
 699     if( p_vout->p_sys->p_overlay == NULL )
 700     {
 701         p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 702         p_vout->p_sys->p_overlay =
 703             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 704                                   p_vout->p_sys->p_display );
 705     }
 706
 707     if( p_vout->p_sys->p_overlay == NULL )
 708     {
 709         p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 710         p_vout->p_sys->p_overlay =
 711             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 712                                   p_vout->p_sys->p_display );
 713     }
 714
 715     if( p_vout->p_sys->p_overlay == NULL )
 716     {
 717         msg_Warn( p_vout, "no SDL overlay for 0x%.8x (%4.4s)",
 718                   p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma );
 719
 720         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 721         {
 722             case 8:
 723                 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 724                 p_vout->output.pf_setpalette = SetPalette;
 725                 break;
 726             case 15:
 727                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
 728                 break;
 729             case 16:
 730                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 731                 break;
 732             case 24:
 733                 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 734                 break;
 735             case 32:
 736                 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 737                 break;
 738             default:
 739                 msg_Err( p_vout, "unknown screen depth %i",
 740                          p_vout->p_sys->p_display->format->BitsPerPixel );
 741                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 742                 SDL_FreeSurface( p_vout->p_sys->p_display );
 743                 return( -1 );
 744         }
 745
 746         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
 747         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
 748         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
 749
 750         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 751                            VOUT_TITLE " (software RGB SDL output)" );
 752     }
 753     else
 754     {
 755         if( p_vout->p_sys->p_overlay->hw_overlay )
 756         {
 757             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 758                                VOUT_TITLE " (hardware YUV SDL output)" );
 759         }
 760         else
 761         {
 762             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 763                                VOUT_TITLE " (software YUV SDL output)" );
 764         }
 765     }
 766
 767     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 768
 769     return( 0 );
 770 }
 771
 772 /*****************************************************************************
 773  * CloseDisplay: close and reset SDL device
 774  *****************************************************************************
 775  * This function returns all resources allocated by OpenDisplay and restore
 776  * the original state of the device.
 777  *****************************************************************************/
 778 static void CloseDisplay( vout_thread_t *p_vout )
 779 {
 780     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 781     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 782     SDL_FreeSurface( p_vout->p_sys->p_display );
 783 }
 784
 785 /*****************************************************************************
 786  * NewPicture: allocate a picture
 787  *****************************************************************************
 788  * Returns 0 on success, -1 otherwise
 789  *****************************************************************************/
 790 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 791 {
 792     int i_width  = p_vout->output.i_width;
 793     int i_height = p_vout->output.i_height;
 794
 795     if( p_vout->p_sys->p_overlay == NULL )
 796     {
 797         /* RGB picture */
 798         if( p_vout->p_sys->i_surfaces )
 799         {
 800             /* We already allocated this surface, return */
 801             return -1;
 802         }
 803
 804         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 805
 806         if( p_pic->p_sys == NULL )
 807         {
 808             return -1;
 809         }
 810
 811         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 812         {
 813             case 8:
 814                 p_pic->p->i_pixel_pitch = 1;
 815                 break;
 816             case 15:
 817             case 16:
 818                 p_pic->p->i_pixel_pitch = 2;
 819                 break;
 820             case 24:
 821             case 32:
 822                 p_pic->p->i_pixel_pitch = 4;
 823                 break;
 824             default:
 825                 return( -1 );
 826         }
 827
 828         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 829         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 830         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 831         p_pic->p->i_visible_pitch =
 832             p_pic->p->i_pixel_pitch * p_vout->p_sys->p_display->w;
 833
 834         p_vout->p_sys->i_surfaces++;
 835
 836         p_pic->i_planes = 1;
 837     }
 838     else
 839     {
 840         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 841
 842         if( p_pic->p_sys == NULL )
 843         {
 844             return -1;
 845         }
 846
 847         p_pic->p_sys->p_overlay =
 848             SDL_CreateYUVOverlay( i_width, i_height,
 849                                   p_vout->output.i_chroma,
 850                                   p_vout->p_sys->p_display );
 851
 852         if( p_pic->p_sys->p_overlay == NULL )
 853         {
 854             free( p_pic->p_sys );
 855             return -1;
 856         }
 857
 858         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 859
 860         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 861         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 862         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 863
 864         switch( p_vout->output.i_chroma )
 865         {
 866         case SDL_YV12_OVERLAY:
 867             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 868             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
 869
 870             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 871             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 872             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 873             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 874             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 875
 876             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 877             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 878             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 879             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 880             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 881
 882             p_pic->i_planes = 3;
 883             break;
 884
 885         case SDL_IYUV_OVERLAY:
 886             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 887             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
 888
 889             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 890             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 891             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 892             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 893             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 894
 895             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 896             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 897             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 898             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 899             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 900
 901             p_pic->i_planes = 3;
 902             break;
 903
 904         default:
 905             p_pic->p[Y_PLANE].i_pixel_pitch = 2;
 906             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w * 2;
 907
 908             p_pic->i_planes = 1;
 909             break;
 910         }
 911     }
 912
 913     return 0;
 914 }
 915
 916 /*****************************************************************************
 917  * SetPalette: sets an 8 bpp palette
 918  *****************************************************************************/
 919 static void SetPalette( vout_thread_t *p_vout,
 920                         uint16_t *red, uint16_t *green, uint16_t *blue )
 921 {
 922     SDL_Color colors[256];
 923     int i;
 924
 925     /* Fill colors with color information */
 926     for( i = 0; i < 256; i++ )
 927     {
 928         colors[ i ].r = red[ i ] >> 8;
 929         colors[ i ].g = green[ i ] >> 8;
 930         colors[ i ].b = blue[ i ] >> 8;
 931     }
 932
 933     /* Set palette */
 934     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 935     {
 936         msg_Err( p_vout, "failed setting palette" );
 937     }
 938 }
 939