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 1.10 2003/03/17 17:11:32 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 #include <vlc/aout.h>
  37
  38 #include <sys/types.h>
  39 #ifndef WIN32
  40 #   include <netinet/in.h>                            /* BSD: struct in_addr */
  41 #endif
  42
  43 #include SDL_INCLUDE_FILE
  44
  45 #include "netutils.h"
  46
  47 #define SDL_MAX_DIRECTBUFFERS 10
  48 #define SDL_DEFAULT_BPP 16
  49
  50 /*****************************************************************************
  51  * vout_sys_t: video output SDL method descriptor
  52  *****************************************************************************
  53  * This structure is part of the video output thread descriptor.
  54  * It describes the SDL specific properties of an output thread.
  55  *****************************************************************************/
  56 struct vout_sys_t
  57 {
  58     SDL_Surface *   p_display;                             /* display device */
  59
  60     int i_width;
  61     int i_height;
  62
  63     /* For YUV output */
  64     SDL_Overlay * p_overlay;   /* An overlay we keep to grab the XVideo port */
  65
  66     /* For RGB output */
  67     int i_surfaces;
  68
  69     vlc_bool_t  b_cursor;
  70     vlc_bool_t  b_cursor_autohidden;
  71     mtime_t     i_lastmoved;
  72     mtime_t     i_lastpressed;                        /* to track dbl-clicks */
  73 };
  74
  75 /*****************************************************************************
  76  * picture_sys_t: direct buffer method descriptor
  77  *****************************************************************************
  78  * This structure is part of the picture descriptor, it describes the
  79  * SDL specific properties of a direct buffer.
  80  *****************************************************************************/
  81 struct picture_sys_t
  82 {
  83     SDL_Overlay *p_overlay;
  84 };
  85
  86 /*****************************************************************************
  87  * Local prototypes
  88  *****************************************************************************/
  89 static int  Open      ( vlc_object_t * );
  90 static void Close     ( vlc_object_t * );
  91 static int  Init      ( vout_thread_t * );
  92 static void End       ( vout_thread_t * );
  93 static int  Manage    ( vout_thread_t * );
  94 static void Display   ( vout_thread_t *, picture_t * );
  95
  96 static int  OpenDisplay     ( vout_thread_t * );
  97 static void CloseDisplay    ( vout_thread_t * );
  98 static int  NewPicture      ( vout_thread_t *, picture_t * );
  99 static void SetPalette      ( vout_thread_t *,
 100                               uint16_t *, uint16_t *, uint16_t * );
 101
 102 /*****************************************************************************
 103  * Module descriptor
 104  *****************************************************************************/
 105 vlc_module_begin();
 106     set_description( _("Simple DirectMedia Layer video module") );
 107     set_capability( "video output", 60 );
 108     add_shortcut( "sdl" );
 109     set_callbacks( Open, Close );
 110     /* XXX: check for conflicts with the SDL audio output */
 111     var_Create( p_module->p_libvlc, "sdl", VLC_VAR_MUTEX );
 112 vlc_module_end();
 113
 114 /*****************************************************************************
 115  * OpenVideo: allocate SDL video thread output method
 116  *****************************************************************************
 117  * This function allocate and initialize a SDL vout method. It uses some of the
 118  * vout properties to choose the correct mode, and change them according to the
 119  * mode actually used.
 120  *****************************************************************************/
 121 static int Open ( vlc_object_t *p_this )
 122 {
 123     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 124     vlc_value_t lockval;
 125
 126 #ifdef HAVE_SETENV
 127     char *psz_method;
 128 #endif
 129
 130     var_Get( p_this->p_libvlc, "sdl", &lockval );
 131     vlc_mutex_lock( lockval.p_address );
 132
 133     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 134     {
 135         vlc_mutex_unlock( lockval.p_address );
 136         return VLC_EGENERIC;
 137     }
 138
 139     /* Allocate structure */
 140     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 141     if( p_vout->p_sys == NULL )
 142     {
 143         msg_Err( p_vout, "out of memory" );
 144         vlc_mutex_unlock( lockval.p_address );
 145         return VLC_ENOMEM;
 146     }
 147
 148     p_vout->pf_init = Init;
 149     p_vout->pf_end = End;
 150     p_vout->pf_manage = Manage;
 151     p_vout->pf_render = NULL;
 152     p_vout->pf_display = Display;
 153
 154 #ifdef HAVE_SETENV
 155     psz_method = config_GetPsz( p_vout, "vout" );
 156     if( psz_method )
 157     {
 158         while( *psz_method && *psz_method != ':' )
 159         {
 160             psz_method++;
 161         }
 162
 163         if( *psz_method )
 164         {
 165             setenv( "SDL_VIDEODRIVER", psz_method + 1, 1 );
 166         }
 167     }
 168 #endif
 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         msg_Err( p_vout, "cannot initialize SDL (%s)", SDL_GetError() );
 184         free( p_vout->p_sys );
 185         vlc_mutex_unlock( lockval.p_address );
 186         return VLC_EGENERIC;
 187     }
 188
 189     vlc_mutex_unlock( lockval.p_address );
 190
 191     p_vout->p_sys->b_cursor = 1;
 192     p_vout->p_sys->b_cursor_autohidden = 0;
 193     p_vout->p_sys->i_lastmoved = mdate();
 194
 195     if( OpenDisplay( p_vout ) )
 196     {
 197         msg_Err( p_vout, "cannot set up SDL (%s)", SDL_GetError() );
 198         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 199         free( p_vout->p_sys );
 200         return VLC_EGENERIC;
 201     }
 202
 203     return VLC_SUCCESS;
 204 }
 205
 206 /*****************************************************************************
 207  * Init: initialize SDL video thread output method
 208  *****************************************************************************
 209  * This function initialize the SDL display device.
 210  *****************************************************************************/
 211 static int Init( vout_thread_t *p_vout )
 212 {
 213     int i_index;
 214     picture_t *p_pic;
 215
 216     p_vout->p_sys->i_surfaces = 0;
 217
 218     I_OUTPUTPICTURES = 0;
 219
 220     /* Initialize the output structure */
 221     if( p_vout->p_sys->p_overlay == NULL )
 222     {
 223         /* All we have is an RGB image with square pixels */
 224         p_vout->output.i_width  = p_vout->p_sys->i_width;
 225         p_vout->output.i_height = p_vout->p_sys->i_height;
 226         p_vout->output.i_aspect = p_vout->output.i_width
 227                                    * VOUT_ASPECT_FACTOR
 228                                    / p_vout->output.i_height;
 229     }
 230     else
 231     {
 232         /* We may need to convert the chroma, but at least we keep the
 233          * aspect ratio */
 234         p_vout->output.i_width  = p_vout->render.i_width;
 235         p_vout->output.i_height = p_vout->render.i_height;
 236         p_vout->output.i_aspect = p_vout->render.i_aspect;
 237     }
 238
 239     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 240     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 241     {
 242         p_pic = NULL;
 243
 244         /* Find an empty picture slot */
 245         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 246         {
 247             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 248             {
 249                 p_pic = p_vout->p_picture + i_index;
 250                 break;
 251             }
 252         }
 253
 254         /* Allocate the picture if we found one */
 255         if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 256         {
 257             break;
 258         }
 259
 260         p_pic->i_status = DESTROYED_PICTURE;
 261         p_pic->i_type   = DIRECT_PICTURE;
 262
 263         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 264
 265         I_OUTPUTPICTURES++;
 266     }
 267
 268     return VLC_SUCCESS;
 269 }
 270
 271 /*****************************************************************************
 272  * End: terminate Sys video thread output method
 273  *****************************************************************************
 274  * Terminate an output method created by OpenVideo
 275  *****************************************************************************/
 276 static void End( vout_thread_t *p_vout )
 277 {
 278     int i_index;
 279
 280     /* Free the output buffers we allocated */
 281     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 282     {
 283         i_index--;
 284         if( p_vout->p_sys->p_overlay == NULL )
 285         {
 286             /* RGB picture */
 287         }
 288         else
 289         {
 290             SDL_UnlockYUVOverlay(
 291                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 292             SDL_FreeYUVOverlay(
 293                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 294         }
 295         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 296     }
 297 }
 298
 299 /*****************************************************************************
 300  * CloseVideo: destroy Sys video thread output method
 301  *****************************************************************************
 302  * Terminate an output method created by vout_SDLCreate
 303  *****************************************************************************/
 304 static void Close ( vlc_object_t *p_this )
 305 {
 306     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 307
 308     CloseDisplay( p_vout );
 309     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 310
 311     free( p_vout->p_sys );
 312 }
 313
 314 /*****************************************************************************
 315  * Manage: handle Sys events
 316  *****************************************************************************
 317  * This function should be called regularly by video output thread. It returns
 318  * a non null value if an error occured.
 319  *****************************************************************************/
 320 static int Manage( vout_thread_t *p_vout )
 321 {
 322     SDL_Event event;                                            /* SDL event */
 323     vlc_value_t val;
 324     int i_width, i_height, i_x, i_y;
 325
 326     /* Process events */
 327     while( SDL_PollEvent(&event) )
 328     {
 329         switch( event.type )
 330         {
 331         case SDL_VIDEORESIZE:                          /* Resizing of window */
 332             /* Update dimensions */
 333             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 334             p_vout->i_window_width = p_vout->p_sys->i_width = event.resize.w;
 335             p_vout->i_window_height = p_vout->p_sys->i_height = event.resize.h;
 336             break;
 337
 338         case SDL_MOUSEMOTION:
 339             vout_PlacePicture( p_vout, p_vout->p_sys->i_width,
 340                                p_vout->p_sys->i_height,
 341                                &i_x, &i_y, &i_width, &i_height );
 342
 343             val.i_int = ( event.motion.x - i_x )
 344                          * p_vout->render.i_width / i_width;
 345             var_Set( p_vout, "mouse-x", val );
 346             val.i_int = ( event.motion.y - i_y )
 347                          * p_vout->render.i_height / i_height;
 348             var_Set( p_vout, "mouse-y", val );
 349
 350             val.b_bool = VLC_TRUE;
 351             var_Set( p_vout, "mouse-moved", val );
 352
 353             if( p_vout->p_sys->b_cursor &&
 354                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 355             {
 356                 if( p_vout->p_sys->b_cursor_autohidden )
 357                 {
 358                     p_vout->p_sys->b_cursor_autohidden = 0;
 359                     SDL_ShowCursor( 1 );
 360                 }
 361                 else
 362                 {
 363                     p_vout->p_sys->i_lastmoved = mdate();
 364                 }
 365             }
 366             break;
 367
 368         case SDL_MOUSEBUTTONUP:
 369             switch( event.button.button )
 370             {
 371             case SDL_BUTTON_LEFT:
 372                 val.b_bool = VLC_TRUE;
 373                 var_Set( p_vout, "mouse-clicked", val );
 374                 break;
 375
 376             case SDL_BUTTON_RIGHT:
 377                 {
 378                     intf_thread_t *p_intf;
 379                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 380                                                       FIND_ANYWHERE );
 381                     if( p_intf )
 382                     {
 383                         p_intf->b_menu_change = 1;
 384                         vlc_object_release( p_intf );
 385                     }
 386                 }
 387                 break;
 388             }
 389             break;
 390
 391         case SDL_MOUSEBUTTONDOWN:
 392             switch( event.button.button )
 393             {
 394             case SDL_BUTTON_LEFT:
 395                 /* In this part we will eventually manage
 396                  * clicks for DVD navigation for instance. */
 397
 398                 /* detect double-clicks */
 399                 if( ( mdate() - p_vout->p_sys->i_lastpressed ) < 300000 )
 400                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 401
 402                 p_vout->p_sys->i_lastpressed = mdate();
 403                 break;
 404
 405             case 4:
 406                 input_Seek( p_vout, 15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 407                 break;
 408
 409             case 5:
 410                 input_Seek( p_vout, -15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 411                 break;
 412             }
 413             break;
 414
 415         case SDL_QUIT:
 416             p_vout->p_vlc->b_die = 1;
 417             break;
 418
 419         case SDL_KEYDOWN:                             /* if a key is pressed */
 420
 421             switch( event.key.keysym.sym )
 422             {
 423             case SDLK_ESCAPE:
 424                 if( p_vout->b_fullscreen )
 425                 {
 426                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 427                 }
 428                 else
 429                 {
 430                     p_vout->p_vlc->b_die = 1;
 431                 }
 432                 break;
 433
 434             case SDLK_q:                                             /* quit */
 435                 p_vout->p_vlc->b_die = 1;
 436                 break;
 437
 438             case SDLK_f:                             /* switch to fullscreen */
 439                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 440                 break;
 441
 442             case SDLK_c:                                 /* toggle grayscale */
 443                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 444                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 445                 break;
 446
 447             case SDLK_i:                                      /* toggle info */
 448                 p_vout->b_info = ! p_vout->b_info;
 449                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 450                 break;
 451
 452             case SDLK_s:                                   /* toggle scaling */
 453                 p_vout->b_scale = ! p_vout->b_scale;
 454                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 455                 break;
 456
 457             case SDLK_SPACE:                             /* toggle interface */
 458                 p_vout->b_interface = ! p_vout->b_interface;
 459                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 460                 break;
 461
 462             case SDLK_MENU:
 463                 {
 464                     intf_thread_t *p_intf;
 465                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 466                                                       FIND_ANYWHERE );
 467                     if( p_intf != NULL )
 468                     {
 469                         p_intf->b_menu_change = 1;
 470                         vlc_object_release( p_intf );
 471                     }
 472                 }
 473                 break;
 474
 475             case SDLK_LEFT:
 476                 input_Seek( p_vout, -5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 477                 break;
 478
 479             case SDLK_RIGHT:
 480                 input_Seek( p_vout, 5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 481                 break;
 482
 483             case SDLK_UP:
 484                 input_Seek( p_vout, 60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 485                 break;
 486
 487             case SDLK_DOWN:
 488                 input_Seek( p_vout, -60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 489                 break;
 490
 491             case SDLK_F1: network_ChannelJoin( p_vout, 1 ); break;
 492             case SDLK_F2: network_ChannelJoin( p_vout, 2 ); break;
 493             case SDLK_F3: network_ChannelJoin( p_vout, 3 ); break;
 494             case SDLK_F4: network_ChannelJoin( p_vout, 4 ); break;
 495             case SDLK_F5: network_ChannelJoin( p_vout, 5 ); break;
 496             case SDLK_F6: network_ChannelJoin( p_vout, 6 ); break;
 497             case SDLK_F7: network_ChannelJoin( p_vout, 7 ); break;
 498             case SDLK_F8: network_ChannelJoin( p_vout, 8 ); break;
 499             case SDLK_F9: network_ChannelJoin( p_vout, 9 ); break;
 500             case SDLK_F10: network_ChannelJoin( p_vout, 10 ); break;
 501             case SDLK_F11: network_ChannelJoin( p_vout, 11 ); break;
 502             case SDLK_F12: network_ChannelJoin( p_vout, 12 ); break;
 503
 504             case SDLK_b:
 505                 {
 506                     audio_volume_t i_volume;
 507                     if ( !aout_VolumeDown( p_vout, 1, &i_volume ) )
 508                     {
 509                         msg_Dbg( p_vout, "audio volume is now %d", i_volume );
 510                     }
 511                     else
 512                     {
 513                         msg_Dbg( p_vout, "audio volume: operation not supported" );
 514                     }
 515                 }
 516                 break;
 517
 518             case SDLK_n:
 519                 {
 520                     audio_volume_t i_volume;
 521                     if ( !aout_VolumeUp( p_vout, 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                 }
 530                 break;
 531
 532              default:
 533                 break;
 534             }
 535             break;
 536
 537         default:
 538             break;
 539         }
 540     }
 541
 542     /* Fullscreen change */
 543     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 544     {
 545         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 546
 547         p_vout->p_sys->b_cursor_autohidden = 0;
 548         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 549                         ! p_vout->p_sys->b_cursor_autohidden );
 550
 551         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 552         p_vout->i_changes |= VOUT_SIZE_CHANGE;
 553     }
 554
 555     /*
 556      * Size change
 557      */
 558     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 559     {
 560         msg_Dbg( p_vout, "video display resized (%dx%d)",
 561                  p_vout->p_sys->i_width, p_vout->p_sys->i_height );
 562
 563         CloseDisplay( p_vout );
 564         OpenDisplay( p_vout );
 565
 566         /* We don't need to signal the vout thread about the size change if
 567          * we can handle rescaling ourselves */
 568         if( p_vout->p_sys->p_overlay != NULL )
 569             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 570
 571     }
 572
 573     /* Pointer change */
 574     if( ! p_vout->p_sys->b_cursor_autohidden &&
 575         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 576     {
 577         /* Hide the mouse automatically */
 578         p_vout->p_sys->b_cursor_autohidden = 1;
 579         SDL_ShowCursor( 0 );
 580     }
 581
 582     return VLC_SUCCESS;
 583 }
 584
 585 /*****************************************************************************
 586  * Display: displays previously rendered output
 587  *****************************************************************************
 588  * This function sends the currently rendered image to the display.
 589  *****************************************************************************/
 590 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 591 {
 592     int x, y, w, h;
 593     SDL_Rect disp;
 594
 595     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 596                        &x, &y, &w, &h );
 597     disp.x = x;
 598     disp.y = y;
 599     disp.w = w;
 600     disp.h = h;
 601
 602     if( p_vout->p_sys->p_overlay == NULL )
 603     {
 604         /* RGB picture */
 605         SDL_Flip( p_vout->p_sys->p_display );
 606     }
 607     else
 608     {
 609         /* Overlay picture */
 610         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 611         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 612         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 613     }
 614 }
 615
 616 /* following functions are local */
 617
 618 /*****************************************************************************
 619  * OpenDisplay: open and initialize SDL device
 620  *****************************************************************************
 621  * Open and initialize display according to preferences specified in the vout
 622  * thread fields.
 623  *****************************************************************************/
 624 static int OpenDisplay( vout_thread_t *p_vout )
 625 {
 626     Uint32   i_flags;
 627     int      i_bpp;
 628
 629     /* SDL fucked up fourcc definitions on bigendian machines */
 630     uint32_t i_sdl_chroma;
 631
 632     /* Set main window's size */
 633     p_vout->p_sys->i_width = p_vout->b_fullscreen ? p_vout->output.i_width :
 634                                                     p_vout->i_window_width;
 635     p_vout->p_sys->i_height = p_vout->b_fullscreen ? p_vout->output.i_height :
 636                                                      p_vout->i_window_height;
 637
 638     /* Initialize flags and cursor */
 639     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 640     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 641
 642     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 643                              SDL_DEFAULT_BPP, i_flags );
 644     if( i_bpp == 0 )
 645     {
 646         msg_Err( p_vout, "no video mode available" );
 647         return VLC_EGENERIC;
 648     }
 649
 650     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 651                                                  p_vout->p_sys->i_height,
 652                                                  i_bpp, i_flags );
 653
 654     if( p_vout->p_sys->p_display == NULL )
 655     {
 656         msg_Err( p_vout, "cannot set video mode" );
 657         return VLC_EGENERIC;
 658     }
 659
 660     SDL_LockSurface( p_vout->p_sys->p_display );
 661
 662     /* Choose the chroma we will try first. */
 663     switch( p_vout->render.i_chroma )
 664     {
 665         case VLC_FOURCC('Y','U','Y','2'):
 666         case VLC_FOURCC('Y','U','N','V'):
 667             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 668             i_sdl_chroma = SDL_YUY2_OVERLAY;
 669             break;
 670         case VLC_FOURCC('U','Y','V','Y'):
 671         case VLC_FOURCC('U','Y','N','V'):
 672         case VLC_FOURCC('Y','4','2','2'):
 673             p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
 674             i_sdl_chroma = SDL_UYVY_OVERLAY;
 675             break;
 676         case VLC_FOURCC('Y','V','Y','U'):
 677             p_vout->output.i_chroma = VLC_FOURCC('Y','V','Y','U');
 678             i_sdl_chroma = SDL_YVYU_OVERLAY;
 679             break;
 680         case VLC_FOURCC('Y','V','1','2'):
 681         case VLC_FOURCC('I','4','2','0'):
 682         case VLC_FOURCC('I','Y','U','V'):
 683         default:
 684             p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 685             i_sdl_chroma = SDL_YV12_OVERLAY;
 686             break;
 687     }
 688
 689     p_vout->p_sys->p_overlay =
 690         SDL_CreateYUVOverlay( 32, 32, i_sdl_chroma, p_vout->p_sys->p_display );
 691     /* FIXME: if the first overlay we find is software, don't stop,
 692      * because we may find a hardware one later ... */
 693
 694     /* If this best choice failed, fall back to other chromas */
 695     if( p_vout->p_sys->p_overlay == NULL )
 696     {
 697         p_vout->output.i_chroma = VLC_FOURCC('I','Y','U','V');
 698         p_vout->p_sys->p_overlay =
 699             SDL_CreateYUVOverlay( 32, 32, SDL_IYUV_OVERLAY,
 700                                   p_vout->p_sys->p_display );
 701     }
 702
 703     if( p_vout->p_sys->p_overlay == NULL )
 704     {
 705         p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 706         p_vout->p_sys->p_overlay =
 707             SDL_CreateYUVOverlay( 32, 32, SDL_YV12_OVERLAY,
 708                                   p_vout->p_sys->p_display );
 709     }
 710
 711     if( p_vout->p_sys->p_overlay == NULL )
 712     {
 713         p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 714         p_vout->p_sys->p_overlay =
 715             SDL_CreateYUVOverlay( 32, 32, SDL_YUY2_OVERLAY,
 716                                   p_vout->p_sys->p_display );
 717     }
 718
 719     if( p_vout->p_sys->p_overlay == NULL )
 720     {
 721         msg_Warn( p_vout, "no SDL overlay for 0x%.8x (%4.4s)",
 722                   p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma );
 723
 724         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 725         {
 726             case 8:
 727                 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 728                 p_vout->output.pf_setpalette = SetPalette;
 729                 break;
 730             case 15:
 731                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
 732                 break;
 733             case 16:
 734                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 735                 break;
 736             case 24:
 737                 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 738                 break;
 739             case 32:
 740                 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 741                 break;
 742             default:
 743                 msg_Err( p_vout, "unknown screen depth %i",
 744                          p_vout->p_sys->p_display->format->BitsPerPixel );
 745                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 746                 SDL_FreeSurface( p_vout->p_sys->p_display );
 747                 return VLC_EGENERIC;
 748         }
 749
 750         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
 751         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
 752         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
 753
 754         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 755                            VOUT_TITLE " (software RGB SDL output)" );
 756     }
 757     else
 758     {
 759         if( p_vout->p_sys->p_overlay->hw_overlay )
 760         {
 761             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 762                                VOUT_TITLE " (hardware YUV SDL output)" );
 763         }
 764         else
 765         {
 766             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 767                                VOUT_TITLE " (software YUV SDL output)" );
 768         }
 769     }
 770
 771     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 772
 773     return VLC_SUCCESS;
 774 }
 775
 776 /*****************************************************************************
 777  * CloseDisplay: close and reset SDL device
 778  *****************************************************************************
 779  * This function returns all resources allocated by OpenDisplay and restore
 780  * the original state of the device.
 781  *****************************************************************************/
 782 static void CloseDisplay( vout_thread_t *p_vout )
 783 {
 784     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 785     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 786     SDL_FreeSurface( p_vout->p_sys->p_display );
 787 }
 788
 789 /*****************************************************************************
 790  * NewPicture: allocate a picture
 791  *****************************************************************************
 792  * Returns 0 on success, -1 otherwise
 793  *****************************************************************************/
 794 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 795 {
 796     int i_width  = p_vout->output.i_width;
 797     int i_height = p_vout->output.i_height;
 798
 799     if( p_vout->p_sys->p_overlay == NULL )
 800     {
 801         /* RGB picture */
 802         if( p_vout->p_sys->i_surfaces )
 803         {
 804             /* We already allocated this surface, return */
 805             return VLC_EGENERIC;
 806         }
 807
 808         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 809
 810         if( p_pic->p_sys == NULL )
 811         {
 812             return VLC_ENOMEM;
 813         }
 814
 815         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 816         {
 817             case 8:
 818                 p_pic->p->i_pixel_pitch = 1;
 819                 break;
 820             case 15:
 821             case 16:
 822                 p_pic->p->i_pixel_pitch = 2;
 823                 break;
 824             case 24:
 825             case 32:
 826                 p_pic->p->i_pixel_pitch = 4;
 827                 break;
 828             default:
 829                 return VLC_EGENERIC;
 830         }
 831
 832         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 833         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 834         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 835         p_pic->p->i_visible_pitch =
 836             p_pic->p->i_pixel_pitch * p_vout->p_sys->p_display->w;
 837
 838         p_vout->p_sys->i_surfaces++;
 839
 840         p_pic->i_planes = 1;
 841     }
 842     else
 843     {
 844         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 845
 846         if( p_pic->p_sys == NULL )
 847         {
 848             return VLC_ENOMEM;
 849         }
 850
 851         p_pic->p_sys->p_overlay =
 852             SDL_CreateYUVOverlay( i_width, i_height,
 853                                   p_vout->output.i_chroma,
 854                                   p_vout->p_sys->p_display );
 855
 856         if( p_pic->p_sys->p_overlay == NULL )
 857         {
 858             free( p_pic->p_sys );
 859             return VLC_EGENERIC;
 860         }
 861
 862         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 863
 864         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 865         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 866         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 867
 868         switch( p_vout->output.i_chroma )
 869         {
 870         case SDL_YV12_OVERLAY:
 871             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 872             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
 873
 874             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 875             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 876             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 877             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 878             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 879
 880             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 881             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 882             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 883             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 884             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 885
 886             p_pic->i_planes = 3;
 887             break;
 888
 889         case SDL_IYUV_OVERLAY:
 890             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 891             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
 892
 893             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 894             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 895             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 896             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 897             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 898
 899             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 900             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 901             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 902             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 903             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 904
 905             p_pic->i_planes = 3;
 906             break;
 907
 908         default:
 909             p_pic->p[Y_PLANE].i_pixel_pitch = 2;
 910             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w * 2;
 911
 912             p_pic->i_planes = 1;
 913             break;
 914         }
 915     }
 916
 917     return VLC_SUCCESS;
 918 }
 919
 920 /*****************************************************************************
 921  * SetPalette: sets an 8 bpp palette
 922  *****************************************************************************/
 923 static void SetPalette( vout_thread_t *p_vout,
 924                         uint16_t *red, uint16_t *green, uint16_t *blue )
 925 {
 926     SDL_Color colors[256];
 927     int i;
 928
 929     /* Fill colors with color information */
 930     for( i = 0; i < 256; i++ )
 931     {
 932         colors[ i ].r = red[ i ] >> 8;
 933         colors[ i ].g = green[ i ] >> 8;
 934         colors[ i ].b = blue[ i ] >> 8;
 935     }
 936
 937     /* Set palette */
 938     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 939     {
 940         msg_Err( p_vout, "failed setting palette" );
 941     }
 942 }
 943