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 1.67 2001/12/07 18:33:08 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 #define MODULE_NAME sdl
  27 #include "modules_inner.h"
  28
  29 /*****************************************************************************
  30  * Preamble
  31  *****************************************************************************/
  32 #include "defs.h"
  33
  34 #include <errno.h>                                                 /* ENOMEM */
  35 #include <stdlib.h>                                                /* free() */
  36 #include <string.h>                                            /* strerror() */
  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 "common.h"
  46 #include "intf_msg.h"
  47 #include "threads.h"
  48 #include "mtime.h"
  49 #include "tests.h"
  50
  51 #include "video.h"
  52 #include "video_output.h"
  53
  54 #include "interface.h"
  55 /* FIXME: get rid of this */
  56 #include "keystrokes.h"
  57 #include "netutils.h"
  58
  59 #include "modules.h"
  60 #include "modules_export.h"
  61
  62 /*****************************************************************************
  63  * FIXME: this file is ...                                                   *
  64  *                                                                           *
  65  *              XXX   XXX     FIXME     XXX     XXX   XXX   XXX              *
  66  *              XXX   XXX   XXX   XXX   XXX     XXX   XXX   XXX              *
  67  *              XXX   XXX   XXX         XXX       FIXME     XXX              *
  68  *              XXX   XXX   XXX  TODO   XXX        XXX      XXX              *
  69  *              XXX   XXX   XXX   XXX   XXX        XXX                       *
  70  *                FIXME       FIXME       FIXME    XXX      XXX              *
  71  *                                                                           *
  72  *****************************************************************************/
  73
  74 /*****************************************************************************
  75  * vout_sys_t: video output SDL method descriptor
  76  *****************************************************************************
  77  * This structure is part of the video output thread descriptor.
  78  * It describes the SDL specific properties of an output thread.
  79  *****************************************************************************/
  80 typedef struct vout_sys_s
  81 {
  82     int i_width;
  83     int i_height;
  84
  85     SDL_Surface *   p_display;                             /* display device */
  86     SDL_Overlay *   p_overlay;                             /* overlay device */
  87
  88     boolean_t   b_overlay;
  89     boolean_t   b_cursor;
  90     boolean_t   b_reopen_display;
  91
  92     boolean_t   b_cursor_autohidden;
  93     mtime_t     i_lastmoved;
  94
  95     Uint8   *   p_sdl_buf[2];                          /* Buffer information */
  96
  97 } vout_sys_t;
  98
  99 /*****************************************************************************
 100  * Local prototypes.
 101  *****************************************************************************/
 102 static int  vout_Probe     ( probedata_t *p_data );
 103 static int  vout_Create    ( struct vout_thread_s * );
 104 static int  vout_Init      ( struct vout_thread_s * );
 105 static void vout_End       ( struct vout_thread_s * );
 106 static void vout_Destroy   ( struct vout_thread_s * );
 107 static int  vout_Manage    ( struct vout_thread_s * );
 108 static void vout_Display   ( struct vout_thread_s * );
 109 static void vout_SetPalette( p_vout_thread_t p_vout, u16 *red, u16 *green,
 110                              u16 *blue, u16 *transp );
 111
 112 static int  SDLOpenDisplay     ( vout_thread_t *p_vout );
 113 static void SDLCloseDisplay    ( vout_thread_t *p_vout );
 114 static void OutputCoords       ( const picture_t *p_pic, const boolean_t scale,
 115                                  const int win_w, const int win_h,
 116                                  int *dx, int *dy, int *w, int *h );
 117
 118 /*****************************************************************************
 119  * Functions exported as capabilities. They are declared as static so that
 120  * we don't pollute the namespace too much.
 121  *****************************************************************************/
 122 void _M( vout_getfunctions )( function_list_t * p_function_list )
 123 {
 124     p_function_list->pf_probe = vout_Probe;
 125     p_function_list->functions.vout.pf_create     = vout_Create;
 126     p_function_list->functions.vout.pf_init       = vout_Init;
 127     p_function_list->functions.vout.pf_end        = vout_End;
 128     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 129     p_function_list->functions.vout.pf_manage     = vout_Manage;
 130     p_function_list->functions.vout.pf_display    = vout_Display;
 131     p_function_list->functions.vout.pf_setpalette = vout_SetPalette;
 132 }
 133
 134 /*****************************************************************************
 135  * vout_Probe: probe the video driver and return a score
 136  *****************************************************************************
 137  * This function tries to initialize SDL and returns a score to the
 138  * plugin manager so that it can select the best plugin.
 139  *****************************************************************************/
 140 static int vout_Probe( probedata_t *p_data )
 141 {
 142     if( TestMethod( VOUT_METHOD_VAR, "sdl" ) )
 143     {
 144         return( 999 );
 145     }
 146
 147     return( 100 );
 148 }
 149
 150 /*****************************************************************************
 151  * vout_Create: allocate SDL video thread output method
 152  *****************************************************************************
 153  * This function allocate and initialize a SDL vout method. It uses some of the
 154  * vout properties to choose the correct mode, and change them according to the
 155  * mode actually used.
 156  *****************************************************************************/
 157 static int vout_Create( vout_thread_t *p_vout )
 158 {
 159     /* Allocate structure */
 160     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 161     if( p_vout->p_sys == NULL )
 162     {
 163         intf_ErrMsg( "vout error: can't create p_sys (%s)", strerror(ENOMEM) );
 164         return( 1 );
 165     }
 166
 167     /* Initialize library */
 168     if( SDL_Init( SDL_INIT_VIDEO
 169 #ifndef WIN32
 170     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 171                 | SDL_INIT_EVENTTHREAD
 172 #endif
 173 #ifdef DEBUG
 174     /* In debug mode you may want vlc to dump a core instead of staying
 175      * stuck */
 176                 | SDL_INIT_NOPARACHUTE
 177 #endif
 178                 ) < 0 )
 179     {
 180         intf_ErrMsg( "vout error: can't initialize SDL (%s)", SDL_GetError() );
 181         free( p_vout->p_sys );
 182         return( 1 );
 183     }
 184
 185     p_vout->p_sys->b_cursor = 1; /* TODO should be done with a main_GetInt.. */
 186
 187     p_vout->p_sys->b_cursor_autohidden = 0;
 188     p_vout->p_sys->i_lastmoved = mdate();
 189
 190     p_vout->b_fullscreen = main_GetIntVariable( VOUT_FULLSCREEN_VAR,
 191                                 VOUT_FULLSCREEN_DEFAULT );
 192     p_vout->p_sys->b_overlay = main_GetIntVariable( VOUT_OVERLAY_VAR,
 193                                 VOUT_OVERLAY_DEFAULT );
 194     p_vout->p_sys->i_width = p_vout->i_width;
 195     p_vout->p_sys->i_height = p_vout->i_height;
 196
 197     p_vout->p_sys->p_display = NULL;
 198     p_vout->p_sys->p_overlay = NULL;
 199
 200     if( SDLOpenDisplay(p_vout) )
 201     {
 202         intf_ErrMsg( "vout error: can't set up SDL (%s)", SDL_GetError() );
 203         free( p_vout->p_sys );
 204         return( 1 );
 205     }
 206
 207     /* FIXME: get rid of this ASAP, it's FUCKING UGLY */
 208     { intf_thread_t * p_intf = p_main->p_intf;
 209     intf_AssignKey(p_intf, SDLK_q,      INTF_KEY_QUIT, 0);
 210     intf_AssignKey(p_intf, SDLK_ESCAPE, INTF_KEY_QUIT, 0);
 211     /* intf_AssignKey(p_intf,3,'Q'); */
 212     intf_AssignKey(p_intf, SDLK_0,      INTF_KEY_SET_CHANNEL,0);
 213     intf_AssignKey(p_intf, SDLK_1,      INTF_KEY_SET_CHANNEL,1);
 214     intf_AssignKey(p_intf, SDLK_2,      INTF_KEY_SET_CHANNEL,2);
 215     intf_AssignKey(p_intf, SDLK_3,      INTF_KEY_SET_CHANNEL,3);
 216     intf_AssignKey(p_intf, SDLK_4,      INTF_KEY_SET_CHANNEL,4);
 217     intf_AssignKey(p_intf, SDLK_5,      INTF_KEY_SET_CHANNEL,5);
 218     intf_AssignKey(p_intf, SDLK_6,      INTF_KEY_SET_CHANNEL,6);
 219     intf_AssignKey(p_intf, SDLK_7,      INTF_KEY_SET_CHANNEL,7);
 220     intf_AssignKey(p_intf, SDLK_8,      INTF_KEY_SET_CHANNEL,8);
 221     intf_AssignKey(p_intf, SDLK_9,      INTF_KEY_SET_CHANNEL,9);
 222     intf_AssignKey(p_intf, SDLK_PLUS,   INTF_KEY_INC_VOLUME, 0);
 223     intf_AssignKey(p_intf, SDLK_MINUS,  INTF_KEY_DEC_VOLUME, 0);
 224     intf_AssignKey(p_intf, SDLK_m,      INTF_KEY_TOGGLE_VOLUME, 0);
 225     /* intf_AssignKey(p_intf,'M','M'); */
 226     intf_AssignKey(p_intf, SDLK_g,      INTF_KEY_DEC_GAMMA, 0);
 227     /* intf_AssignKey(p_intf,'G','G'); */
 228     intf_AssignKey(p_intf, SDLK_c,      INTF_KEY_TOGGLE_GRAYSCALE, 0);
 229     intf_AssignKey(p_intf, SDLK_SPACE,  INTF_KEY_TOGGLE_INTERFACE, 0);
 230     intf_AssignKey(p_intf, SDLK_i,      INTF_KEY_TOGGLE_INFO, 0);
 231     intf_AssignKey(p_intf, SDLK_s,      INTF_KEY_TOGGLE_SCALING, 0);
 232     intf_AssignKey(p_intf, SDLK_d,      INTF_KEY_DUMP_STREAM, 0); }
 233
 234     return( 0 );
 235 }
 236
 237 /*****************************************************************************
 238  * vout_Init: initialize SDL video thread output method
 239  *****************************************************************************
 240  * This function initialize the SDL display device.
 241  *****************************************************************************/
 242 static int vout_Init( vout_thread_t *p_vout )
 243 {
 244     /* This hack is hugly, but hey, you are, too. */
 245
 246     SDL_Overlay *   p_overlay;
 247
 248     p_overlay = SDL_CreateYUVOverlay(
 249            main_GetIntVariable( VOUT_WIDTH_VAR,VOUT_WIDTH_DEFAULT ),
 250            main_GetIntVariable( VOUT_HEIGHT_VAR,VOUT_HEIGHT_DEFAULT ),
 251                                       SDL_YV12_OVERLAY,
 252                                       p_vout->p_sys->p_display );
 253
 254     if( p_overlay == NULL )
 255     {
 256         intf_ErrMsg( "vout error: could not create SDL overlay" );
 257         p_vout->b_need_render = 1;
 258         return( 0 );
 259     }
 260
 261     intf_WarnMsg( 2, "vout: YUV acceleration %s",
 262               p_overlay->hw_overlay ? "activated" : "unavailable !" );
 263     p_vout->b_need_render = !p_overlay->hw_overlay;
 264
 265     SDL_FreeYUVOverlay( p_overlay );
 266
 267     return( 0 );
 268 }
 269
 270 /*****************************************************************************
 271  * vout_End: terminate Sys video thread output method
 272  *****************************************************************************
 273  * Terminate an output method created by vout_SDLCreate
 274  *****************************************************************************/
 275 static void vout_End( vout_thread_t *p_vout )
 276 {
 277     SDLCloseDisplay( p_vout );
 278     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 279 }
 280
 281 /*****************************************************************************
 282  * vout_Destroy: destroy Sys video thread output method
 283  *****************************************************************************
 284  * Terminate an output method created by vout_SDLCreate
 285  *****************************************************************************/
 286 static void vout_Destroy( vout_thread_t *p_vout )
 287 {
 288     free( p_vout->p_sys );
 289 }
 290
 291 /*****************************************************************************
 292  * vout_Manage: handle Sys events
 293  *****************************************************************************
 294  * This function should be called regularly by video output thread. It returns
 295  * a non null value if an error occured.
 296  *****************************************************************************/
 297 static int vout_Manage( vout_thread_t *p_vout )
 298 {
 299     SDL_Event event;                                            /* SDL event */
 300     char *    p_key;
 301
 302     /* Process events */
 303     while( SDL_PollEvent(&event) )
 304     {
 305         switch( event.type )
 306         {
 307         case SDL_VIDEORESIZE:                          /* Resizing of window */
 308             p_vout->i_width = event.resize.w;
 309             p_vout->i_height = event.resize.h;
 310             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 311             break;
 312
 313         case SDL_MOUSEMOTION:
 314             if( p_vout->p_sys->b_cursor &&
 315                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 316             {
 317                 if( p_vout->p_sys->b_cursor_autohidden )
 318                 {
 319                     p_vout->p_sys->b_cursor_autohidden = 0;
 320                     SDL_ShowCursor( 1 );
 321                 }
 322                 else
 323                 {
 324                     p_vout->p_sys->i_lastmoved = mdate();
 325                 }
 326             }
 327             break;
 328
 329         case SDL_MOUSEBUTTONUP:
 330             switch( event.button.button )
 331             {
 332             case SDL_BUTTON_RIGHT:
 333                 p_main->p_intf->b_menu_change = 1;
 334                 break;
 335             }
 336             break;
 337
 338         case SDL_MOUSEBUTTONDOWN:
 339             switch( event.button.button )
 340             {
 341             case SDL_BUTTON_MIDDLE:
 342                 p_vout->i_changes |= VOUT_CURSOR_CHANGE;
 343                 break;
 344             }
 345             break;
 346
 347         case SDL_QUIT:
 348             intf_ProcessKey( p_main->p_intf, SDLK_q );
 349             break;
 350
 351         case SDL_KEYDOWN:                             /* if a key is pressed */
 352
 353             switch( event.key.keysym.sym )
 354             {
 355             case SDLK_f:                             /* switch to fullscreen */
 356                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 357                 break;
 358
 359             case SDLK_y:                               /* switch to hard YUV */
 360                 p_vout->i_changes |= VOUT_YUV_CHANGE;
 361                 break;
 362
 363             case SDLK_c:                                 /* toggle grayscale */
 364                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 365                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 366                 break;
 367
 368             case SDLK_i:                                      /* toggle info */
 369                 p_vout->b_info = ! p_vout->b_info;
 370                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 371                 break;
 372
 373             case SDLK_s:                                   /* toggle scaling */
 374                 p_vout->b_scale = ! p_vout->b_scale;
 375                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 376                 break;
 377
 378             case SDLK_SPACE:                             /* toggle interface */
 379                 p_vout->b_interface = ! p_vout->b_interface;
 380                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 381                 break;
 382
 383             case SDLK_F10:
 384                 network_ChannelJoin( 0 );
 385                 break;
 386             case SDLK_F1:
 387                 network_ChannelJoin( 1 );
 388                 break;
 389             case SDLK_F2:
 390                 network_ChannelJoin( 2 );
 391                 break;
 392             case SDLK_F3:
 393                 network_ChannelJoin( 3 );
 394                 break;
 395             case SDLK_F4:
 396                 network_ChannelJoin( 4 );
 397                 break;
 398             case SDLK_F5:
 399                 network_ChannelJoin( 5 );
 400                 break;
 401             case SDLK_F6:
 402                 network_ChannelJoin( 6 );
 403                 break;
 404             case SDLK_F7:
 405                 network_ChannelJoin( 7 );
 406                 break;
 407             case SDLK_F8:
 408                 network_ChannelJoin( 8 );
 409                 break;
 410             case SDLK_F9:
 411                 network_ChannelJoin( 9 );
 412                 break;
 413
 414             case SDLK_MENU:
 415                 p_main->p_intf->b_menu_change = 1;
 416                 break;
 417
 418             default:
 419                 p_key = SDL_GetKeyName( event.key.keysym.sym ) ;
 420                 if( intf_ProcessKey( p_main->p_intf,
 421                                      (char )event.key.keysym.sym ) )
 422                 {
 423                    intf_DbgMsg( "unhandled key '%c' (%i)",
 424                                 (char)event.key.keysym.sym,
 425                                 event.key.keysym.sym );
 426                 }
 427                 break;
 428             }
 429             break;
 430
 431         default:
 432             break;
 433         }
 434     }
 435
 436     /*
 437      * Size Change
 438      */
 439     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 440     {
 441         p_vout->p_sys->i_width = p_vout->i_width;
 442         p_vout->p_sys->i_height = p_vout->i_height;
 443
 444         /* Need to reopen display */
 445         SDLCloseDisplay( p_vout );
 446         if( SDLOpenDisplay( p_vout ) )
 447         {
 448           intf_ErrMsg( "vout error: can't reopen display after resize" );
 449           return( 1 );
 450         }
 451         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 452     }
 453
 454     /*
 455      * YUV Change
 456      */
 457     if( p_vout->i_changes & VOUT_YUV_CHANGE )
 458     {
 459         p_vout->b_need_render = ! p_vout->b_need_render;
 460
 461         /* Need to reopen display */
 462         SDLCloseDisplay( p_vout );
 463         if( SDLOpenDisplay( p_vout ) )
 464         {
 465           intf_ErrMsg( "error: can't reopen display after YUV change" );
 466           return( 1 );
 467         }
 468         p_vout->i_changes &= ~VOUT_YUV_CHANGE;
 469     }
 470
 471     /*
 472      * Fullscreen change
 473      */
 474     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 475     {
 476         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 477
 478         SDL_WM_ToggleFullScreen(p_vout->p_sys->p_display);
 479
 480         p_vout->p_sys->b_cursor_autohidden = 0;
 481         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 482                         ! p_vout->p_sys->b_cursor_autohidden );
 483
 484         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 485     }
 486
 487     /*
 488      * Pointer change
 489      */
 490     if( ! p_vout->p_sys->b_cursor_autohidden &&
 491         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 492     {
 493         /* Hide the mouse automatically */
 494         p_vout->p_sys->b_cursor_autohidden = 1;
 495         SDL_ShowCursor( 0 );
 496     }
 497
 498     if( p_vout->i_changes & VOUT_CURSOR_CHANGE )
 499     {
 500         p_vout->p_sys->b_cursor = ! p_vout->p_sys->b_cursor;
 501
 502         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 503                         ! p_vout->p_sys->b_cursor_autohidden );
 504
 505         p_vout->i_changes &= ~VOUT_CURSOR_CHANGE;
 506     }
 507
 508     return( 0 );
 509 }
 510
 511 /*****************************************************************************
 512  * vout_SetPalette: sets an 8 bpp palette
 513  *****************************************************************************
 514  * This function sets the palette given as an argument. It does not return
 515  * anything, but could later send information on which colors it was unable
 516  * to set.
 517  *****************************************************************************/
 518 static void vout_SetPalette( p_vout_thread_t p_vout, u16 *red, u16 *green,
 519                          u16 *blue, u16 *transp)
 520 {
 521      /* Create a display surface with a grayscale palette */
 522     SDL_Color colors[256];
 523     int i;
 524
 525     /* Fill colors with color information */
 526     for( i = 0; i < 256; i++ )
 527     {
 528         colors[ i ].r = red[ i ] >> 8;
 529         colors[ i ].g = green[ i ] >> 8;
 530         colors[ i ].b = blue[ i ] >> 8;
 531     }
 532
 533     /* Set palette */
 534     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 535     {
 536         intf_ErrMsg( "vout error: failed setting palette" );
 537     }
 538
 539 }
 540
 541 /*****************************************************************************
 542  * vout_Display: displays previously rendered output
 543  *****************************************************************************
 544  * This function send the currently rendered image to the display, wait until
 545  * it is displayed and switch the two rendering buffer, preparing next frame.
 546  *****************************************************************************/
 547 static void vout_Display( vout_thread_t *p_vout )
 548 {
 549     SDL_Rect    disp;
 550
 551     if((p_vout->p_sys->p_display != NULL) && !p_vout->p_sys->b_reopen_display)
 552     {
 553         if( !p_vout->b_need_render )
 554         {
 555             /*
 556              * p_vout->p_rendered_pic->p_y/u/v contains the YUV buffers to
 557              * render
 558              */
 559             /* TODO: support for streams other than 4:2:0 */
 560             if( p_vout->p_rendered_pic->i_type != YUV_420_PICTURE )
 561             {
 562                 intf_ErrMsg("sdl vout error: no support for that kind of pictures");
 563                 return;
 564             }
 565             /* create the overlay if necessary */
 566             if( p_vout->p_sys->p_overlay == NULL )
 567             {
 568                 p_vout->p_sys->p_overlay = SDL_CreateYUVOverlay(
 569                                              p_vout->p_rendered_pic->i_width,
 570                                              p_vout->p_rendered_pic->i_height,
 571                                              SDL_YV12_OVERLAY,
 572                                              p_vout->p_sys->p_display );
 573
 574                 if( p_vout->p_sys->p_overlay != NULL )
 575                 {
 576                     intf_WarnMsg( 2, "vout: YUV acceleration %s",
 577                                   p_vout->p_sys->p_overlay->hw_overlay
 578                                    ? "activated" : "unavailable !" );
 579                 }
 580             }
 581
 582             if( p_vout->p_sys->p_overlay == NULL )
 583             {
 584                 /* Overlay allocation failed, switch back to software mode */
 585                 intf_ErrMsg( "vout error: could not create SDL overlay" );
 586                 p_vout->b_need_render = 1;
 587             }
 588             else
 589             {
 590                 int i_x, i_y, i_w, i_h;
 591
 592                 SDL_LockYUVOverlay( p_vout->p_sys->p_overlay );
 593                 /* copy the data into video buffers */
 594                 /* Y first */
 595                 p_main->fast_memcpy( p_vout->p_sys->p_overlay->pixels[0],
 596                                      p_vout->p_rendered_pic->p_y,
 597                                      p_vout->p_sys->p_overlay->h *
 598                                      p_vout->p_sys->p_overlay->pitches[0] );
 599                 /* then V */
 600                 p_main->fast_memcpy( p_vout->p_sys->p_overlay->pixels[1],
 601                                      p_vout->p_rendered_pic->p_v,
 602                                      p_vout->p_sys->p_overlay->h *
 603                                      p_vout->p_sys->p_overlay->pitches[1] / 2 );
 604                 /* and U */
 605                 p_main->fast_memcpy( p_vout->p_sys->p_overlay->pixels[2],
 606                                      p_vout->p_rendered_pic->p_u,
 607                                      p_vout->p_sys->p_overlay->h *
 608                                      p_vout->p_sys->p_overlay->pitches[2] / 2 );
 609
 610                 OutputCoords( p_vout->p_rendered_pic, 1,
 611                               p_vout->p_sys->i_width,
 612                               p_vout->p_sys->i_height,
 613                               &i_x, &i_y,
 614                               &i_w, &i_h);
 615                 disp.x = i_x;
 616                 disp.y = i_y;
 617                 disp.w = i_w;
 618                 disp.h = i_h;
 619
 620                 SDL_DisplayYUVOverlay( p_vout->p_sys->p_overlay , &disp );
 621                 SDL_UnlockYUVOverlay(p_vout->p_sys->p_overlay);
 622
 623                 return;
 624             }
 625         }
 626
 627         /* Software YUV: change display frame */
 628         SDL_Flip( p_vout->p_sys->p_display );
 629     }
 630 }
 631
 632 /* following functions are local */
 633
 634 /*****************************************************************************
 635  * SDLOpenDisplay: open and initialize SDL device
 636  *****************************************************************************
 637  * Open and initialize display according to preferences specified in the vout
 638  * thread fields.
 639  *****************************************************************************/
 640 static int SDLOpenDisplay( vout_thread_t *p_vout )
 641 {
 642     SDL_Rect    clipping_rect;
 643     Uint32      flags;
 644     int bpp;
 645     /* Open display
 646      * TODO: Check that we can request for a DOUBLEBUF HWSURFACE display
 647      */
 648
 649     /* init flags and cursor */
 650     flags = SDL_ANYFORMAT | SDL_HWPALETTE;
 651
 652     if( p_vout->b_fullscreen )
 653     {
 654         flags |= SDL_FULLSCREEN;
 655     }
 656     else
 657     {
 658         flags |= SDL_RESIZABLE;
 659     }
 660
 661     if( p_vout->b_need_render )
 662     {
 663         flags |= SDL_HWSURFACE | SDL_DOUBLEBUF;
 664     }
 665     else
 666     {
 667         flags |= SDL_SWSURFACE; /* save video memory */
 668     }
 669
 670     bpp = SDL_VideoModeOK( p_vout->p_sys->i_width,
 671                            p_vout->p_sys->i_height,
 672                            p_vout->i_screen_depth, flags );
 673
 674     if( bpp == 0 )
 675     {
 676         intf_ErrMsg( "vout error: no video mode available" );
 677         return( 1 );
 678     }
 679
 680     p_vout->p_sys->p_display = SDL_SetVideoMode(p_vout->p_sys->i_width,
 681                                                 p_vout->p_sys->i_height,
 682                                                 bpp, flags);
 683
 684     if( p_vout->p_sys->p_display == NULL )
 685     {
 686         intf_ErrMsg( "vout error: cannot set video mode" );
 687         return( 1 );
 688     }
 689
 690     SDL_LockSurface( p_vout->p_sys->p_display );
 691
 692     SDL_WM_SetCaption( VOUT_TITLE " (SDL output)",
 693                        VOUT_TITLE " (SDL output)" );
 694     SDL_EventState(SDL_KEYUP , SDL_IGNORE);                /* ignore keys up */
 695
 696     if( p_vout->b_need_render )
 697     {
 698         p_vout->p_sys->p_sdl_buf[ 0 ] = p_vout->p_sys->p_display->pixels;
 699         SDL_Flip(p_vout->p_sys->p_display);
 700         p_vout->p_sys->p_sdl_buf[ 1 ] = p_vout->p_sys->p_display->pixels;
 701         SDL_Flip(p_vout->p_sys->p_display);
 702
 703         /* Set clipping for text */
 704         clipping_rect.x = 0;
 705         clipping_rect.y = 0;
 706         clipping_rect.w = p_vout->p_sys->p_display->w;
 707         clipping_rect.h = p_vout->p_sys->p_display->h;
 708         SDL_SetClipRect(p_vout->p_sys->p_display, &clipping_rect);
 709
 710         /* Set thread information */
 711         p_vout->i_width =           p_vout->p_sys->p_display->w;
 712         p_vout->i_height =          p_vout->p_sys->p_display->h;
 713         p_vout->i_bytes_per_line =  p_vout->p_sys->p_display->pitch;
 714
 715         p_vout->i_screen_depth =
 716             p_vout->p_sys->p_display->format->BitsPerPixel;
 717         p_vout->i_bytes_per_pixel =
 718             p_vout->p_sys->p_display->format->BytesPerPixel;
 719
 720         p_vout->i_red_mask =        p_vout->p_sys->p_display->format->Rmask;
 721         p_vout->i_green_mask =      p_vout->p_sys->p_display->format->Gmask;
 722         p_vout->i_blue_mask =       p_vout->p_sys->p_display->format->Bmask;
 723
 724         /* FIXME: palette in 8bpp ?? */
 725         /* Set and initialize buffers */
 726         p_vout->pf_setbuffers( p_vout, p_vout->p_sys->p_sdl_buf[ 0 ],
 727                                        p_vout->p_sys->p_sdl_buf[ 1 ] );
 728     }
 729     else
 730     {
 731         p_vout->p_sys->p_sdl_buf[ 0 ] = p_vout->p_sys->p_display->pixels;
 732         p_vout->p_sys->p_sdl_buf[ 1 ] = p_vout->p_sys->p_display->pixels;
 733
 734         /* Set thread information */
 735         p_vout->i_width =           p_vout->p_sys->p_display->w;
 736         p_vout->i_height =          p_vout->p_sys->p_display->h;
 737         p_vout->i_bytes_per_line =  p_vout->p_sys->p_display->pitch;
 738
 739         p_vout->pf_setbuffers( p_vout, p_vout->p_sys->p_sdl_buf[ 0 ],
 740                                        p_vout->p_sys->p_sdl_buf[ 1 ] );
 741     }
 742
 743     p_vout->p_sys->b_reopen_display = 0;
 744
 745     return( 0 );
 746 }
 747
 748 /*****************************************************************************
 749  * SDLCloseDisplay: close and reset SDL device
 750  *****************************************************************************
 751  * This function returns all resources allocated by SDLOpenDisplay and restore
 752  * the original state of the device.
 753  *****************************************************************************/
 754 static void SDLCloseDisplay( vout_thread_t *p_vout )
 755 {
 756     if( p_vout->p_sys->p_display != NULL )
 757     {
 758         if( p_vout->p_sys->p_overlay != NULL )
 759         {
 760             SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 761             p_vout->p_sys->p_overlay = NULL;
 762         }
 763
 764         SDL_UnlockSurface ( p_vout->p_sys->p_display );
 765         SDL_FreeSurface( p_vout->p_sys->p_display );
 766         p_vout->p_sys->p_display = NULL;
 767     }
 768 }
 769
 770 /*****************************************************************************
 771  * OutputCoords: compute the dimensions of the destination image
 772  *****************************************************************************
 773  * This based on some code in SetBufferPicture... , it is also in use in the
 774  * the xvideo plugin. Maybe we should think about putting standard video
 775  * processing functions in a common library ?
 776  *****************************************************************************/
 777 static void OutputCoords( const picture_t *p_pic, const boolean_t scale,
 778                           const int win_w, const int win_h,
 779                           int *dx, int *dy, int *w, int *h )
 780 {
 781     if( !scale )
 782     {
 783         *w = p_pic->i_width; *h = p_pic->i_height;
 784     }
 785     else
 786     {
 787         *w = win_w;
 788         switch( p_pic->i_aspect_ratio )
 789         {
 790             case AR_3_4_PICTURE:
 791                 *h = win_w * 3 / 4;
 792                 break;
 793
 794             case AR_16_9_PICTURE:
 795                 *h = win_w * 9 / 16;
 796                 break;
 797
 798             case AR_221_1_PICTURE:
 799                 *h = win_w * 100 / 221;
 800                 break;
 801
 802             case AR_SQUARE_PICTURE:
 803             default:
 804                 *h = win_w * p_pic->i_height / p_pic->i_width;
 805                 break;
 806         }
 807
 808         if( *h > win_h )
 809         {
 810             *h = win_h;
 811             switch( p_pic->i_aspect_ratio )
 812             {
 813                 case AR_3_4_PICTURE:
 814                     *w = win_h * 4 / 3;
 815                     break;
 816
 817                 case AR_16_9_PICTURE:
 818                     *w = win_h * 16 / 9;
 819                     break;
 820
 821                 case AR_221_1_PICTURE:
 822                     *w = win_h * 221 / 100;
 823                     break;
 824
 825                 case AR_SQUARE_PICTURE:
 826                 default:
 827                     *w = win_h * p_pic->i_width / p_pic->i_height;
 828                     break;
 829             }
 830         }
 831     }
 832
 833     /* Set picture position */
 834     *dx = (win_w - *w) / 2;
 835     *dy = (win_h - *h) / 2;
 836 }