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

   1 /*****************************************************************************
   2 * omapfb.c : omap framebuffer plugin for vlc
   3 *****************************************************************************
   4 * Copyright (C) 2008-2009 the VideoLAN team
   5 * $Id$
   6 *
   7 * Authors: Antoine Lejeune <phytos @ videolan.org>
   8 *          Based on fb.c and work of Siarhei Siamashka on mplayer for Maemo
   9 *          Needs a recent omapfb.h to compile
  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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24 *****************************************************************************/
  25
  26 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include <errno.h>                                                 /* ENOMEM */
  31 #include <fcntl.h>                                                 /* open() */
  32 #include <unistd.h>                                               /* close() */
  33
  34 #include <sys/ioctl.h>
  35 #include <sys/mman.h>                                              /* mmap() */
  36
  37 #include <linux/fb.h>
  38 #include <asm/arch-omap/omapfb.h>
  39
  40 /* Embedded window handling */
  41 #include <X11/Xlib.h>
  42 #include <X11/Xutil.h>
  43 #include <X11/keysym.h>
  44
  45 #ifdef HAVE_OSSO
  46 #include <libosso.h>
  47 #endif
  48
  49 #include <vlc_common.h>
  50 #include <vlc_plugin.h>
  51 #include <vlc_keys.h>
  52 #include <vlc_vout.h>
  53 #include <vlc_window.h>
  54 #include <vlc_playlist.h>
  55
  56 /*****************************************************************************
  57 * Local prototypes
  58 *****************************************************************************/
  59 static int  Create           ( vlc_object_t * );
  60 static void Destroy          ( vlc_object_t * );
  61
  62 static int  Init             ( vout_thread_t * );
  63 static void End              ( vout_thread_t * );
  64 static int  Manage           ( vout_thread_t * );
  65 static void DisplayVideo     ( vout_thread_t *, picture_t * );
  66 static int  Control          ( vout_thread_t *, int, va_list );
  67
  68 static void FreePicture      ( vout_thread_t *, picture_t * );
  69
  70 static int  OpenDisplay      ( vout_thread_t * );
  71 static void CloseDisplay     ( vout_thread_t * );
  72 static void UpdateScreen     ( vout_thread_t *,
  73                                int, int, int, int, int, int, int );
  74
  75 static int  InitWindow       ( vout_thread_t * );
  76 static void CreateWindow     ( vout_sys_t * );
  77 static void ToggleFullScreen ( vout_thread_t * );
  78
  79 #ifdef HAVE_OSSO
  80 static const int i_backlight_on_interval = 300;
  81 #endif
  82
  83 /*****************************************************************************
  84  * Module descriptor
  85  *****************************************************************************/
  86 #define FB_DEV_VAR "omapfbdev"
  87
  88 #define DEVICE_TEXT N_("OMAP Framebuffer device")
  89 #define DEVICE_LONGTEXT N_( \
  90     "OMAP Framebuffer device to use for rendering (usually /dev/fb0).")
  91
  92 #define CHROMA_TEXT N_("Chroma used.")
  93 #define CHROMA_LONGTEXT N_( \
  94     "Force use of a specific chroma for output. Default is Y420 (specific to N770/N8xx hardware)." )
  95
  96 #define OVERLAY_TEXT N_("Embed the overlay")
  97 #define OVERLAY_LONGTEXT N_( \
  98     "Embed the framebuffer overlay into a X11 window" )
  99
 100 vlc_module_begin();
 101     set_shortname( "OMAP framebuffer" );
 102     set_category( CAT_VIDEO );
 103     set_subcategory( SUBCAT_VIDEO_VOUT );
 104     add_file( FB_DEV_VAR, "/dev/fb0", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
 105               false )
 106     add_string( "omap-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
 107                 true )
 108     add_bool( "omap-embedded", true, NULL, OVERLAY_TEXT, OVERLAY_LONGTEXT,
 109                  true )
 110     set_description( N_("OMAP framebuffer video output") );
 111     set_capability( "video output", 200 );
 112     set_callbacks( Create, Destroy );
 113 vlc_module_end();
 114
 115 /*****************************************************************************
 116  * omap_window_t: simple structure with the geometry of a window
 117  *****************************************************************************/
 118 struct omap_window_t
 119 {
 120     uint32_t i_x;
 121     uint32_t i_y;
 122     uint32_t i_width;
 123     uint32_t i_height;
 124 };
 125
 126 /*****************************************************************************
 127 * vout_sys_t: video output omap framebuffer method descriptor
 128  *****************************************************************************
 129  * This structure is part of the video output thread descriptor.
 130  * It describes the FB specific properties of an output thread.
 131  *****************************************************************************/
 132 struct vout_sys_t
 133 {
 134     /* Framebuffer information */
 135     int                         i_fd;                       /* device handle */
 136     struct fb_var_screeninfo    fb_vinfo;        /* current mode information */
 137     struct fb_fix_screeninfo    fb_finfo;
 138     struct omapfb_caps          caps;
 139     bool                        b_tearsync;
 140
 141     /* Window information */
 142     struct omap_window_t output_window;    /* Size of the real output window */
 143     struct omap_window_t main_window;  /* Size of the area we got to display */
 144     struct omap_window_t embedded_window;     /* Size of the embedded window */
 145
 146     /* Video information */
 147     uint32_t             i_video_width;                       /* video width */
 148     uint32_t             i_video_height;                     /* video height */
 149     vlc_fourcc_t         i_chroma;
 150     int                  i_color_format;                   /* OMAPFB_COLOR_* */
 151     bool                 b_embed;
 152     bool                 b_video_enabled;        /* Video must be displayed? */
 153     picture_t           *p_output_picture;
 154
 155     /* Video memory */
 156     uint8_t    *p_video;                                      /* base adress */
 157     uint8_t    *p_center;                                   /* output adress */
 158     size_t      i_page_size;                                    /* page size */
 159     int         i_bytes_per_pixel;                /* Bytes used by one pixel */
 160     int         i_line_len;                   /* Length of one line in bytes */
 161
 162     /* X11 */
 163     Display   *p_display;
 164     vout_window_t *owner_window;
 165     Window     window;
 166     mtime_t    i_time_button_last_pressed;         /* To detect double click */
 167
 168     /* Dummy memory */
 169     int        i_null_fd;
 170     uint8_t   *p_null;
 171
 172 #ifdef HAVE_OSSO
 173     osso_context_t      *p_octx;
 174     int                 i_backlight_on_counter;
 175 #endif
 176 };
 177
 178 /*****************************************************************************
 179  * Create: allocates omapfb video thread output method
 180  *****************************************************************************
 181  * This function allocates and initializes a FB vout method.
 182  *****************************************************************************/
 183 static int Create( vlc_object_t *p_this )
 184 {
 185     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 186     vout_sys_t    *p_sys;
 187
 188     if( p_vout->fmt_in.i_chroma != VLC_FOURCC('I','4','2','0') &&
 189         p_vout->fmt_in.i_chroma != VLC_FOURCC('I','Y','U','V') &&
 190         p_vout->fmt_in.i_chroma != VLC_FOURCC('Y','V','1','2') )
 191         return VLC_EGENERIC;
 192
 193     /* Allocate instance and initialize some members */
 194     p_vout->p_sys = p_sys = calloc( 1, sizeof( vout_sys_t ) );
 195     if( p_vout->p_sys == NULL )
 196         return VLC_ENOMEM;
 197
 198     p_vout->pf_init = Init;
 199     p_vout->pf_end = End;
 200     p_vout->pf_manage = Manage;
 201     p_vout->pf_render = NULL;
 202     p_vout->pf_display = DisplayVideo;
 203     p_vout->pf_control = Control;
 204
 205     p_sys->b_embed = var_CreateGetInteger( p_vout, "omap-embedded" );
 206     p_sys->b_video_enabled = true;
 207
 208     if( OpenDisplay( p_vout ) )
 209     {
 210         free( p_vout->p_sys );
 211         return VLC_EGENERIC;
 212     }
 213
 214     if( InitWindow( p_vout ) )
 215     {
 216         free( p_vout->p_sys );
 217         return VLC_EGENERIC;
 218     }
 219
 220 #ifdef HAVE_OSSO
 221     p_vout->p_sys->i_backlight_on_counter = i_backlight_on_interval;
 222     p_vout->p_sys->p_octx = osso_initialize( "vlc", VERSION, 0, NULL );
 223     if ( p_vout->p_sys->p_octx == NULL ) {
 224         msg_Err( p_vout, "Could not get osso context" );
 225     } else {
 226         msg_Dbg( p_vout, "Initialized osso context" );
 227     }
 228 #endif
 229
 230     return VLC_SUCCESS;
 231 }
 232
 233 /*****************************************************************************
 234  * Destroy: destroy omapfb video thread output method
 235  *****************************************************************************
 236  * Terminate an output method created by Create
 237  *****************************************************************************/
 238 static void Destroy( vlc_object_t *p_this )
 239 {
 240     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 241
 242     CloseDisplay( p_vout );
 243
 244     if( p_vout->p_sys->b_embed )
 245     {
 246         vout_ReleaseWindow( p_vout->p_sys->owner_window );
 247         if( p_vout->b_fullscreen )
 248             XDestroyWindow( p_vout->p_sys->p_display, p_vout->p_sys->window );
 249         XCloseDisplay( p_vout->p_sys->p_display );
 250     }
 251
 252 #ifdef HAVE_OSSO
 253     if ( p_vout->p_sys->p_octx != NULL ) {
 254         msg_Dbg( p_vout, "Deinitializing osso context" );
 255         osso_deinitialize( p_vout->p_sys->p_octx );
 256     }
 257 #endif
 258
 259     /* Destroy structure */
 260     free( p_vout->p_sys );
 261 }
 262
 263
 264 /*****************************************************************************
 265  * Init: initialize omap framebuffer video thread output method
 266  *****************************************************************************/
 267 static int Init( vout_thread_t *p_vout )
 268 {
 269     vout_sys_t *p_sys = (vout_sys_t *)p_vout->p_sys;
 270
 271     // We want to keep the same aspect
 272     p_vout->fmt_out.i_aspect = p_vout->output.i_aspect = p_vout->render.i_aspect;
 273     // We ask where the video should be displayed in the video area
 274     vout_PlacePicture( p_vout, p_sys->main_window.i_width,
 275                        p_sys->main_window.i_height,
 276                        &p_sys->output_window.i_x,
 277                        &p_sys->output_window.i_y,
 278                        &p_sys->output_window.i_width,
 279                        &p_sys->output_window.i_height );
 280     p_sys->output_window.i_x = ( p_sys->output_window.i_x +
 281                                  p_sys->main_window.i_x ) & ~1;
 282     p_sys->output_window.i_y = ( p_sys->output_window.i_y +
 283                                  p_sys->main_window.i_y ) & ~1;
 284
 285     // Hardware upscaling better than software
 286     if( p_vout->fmt_render.i_width <= p_sys->main_window.i_width &&
 287         p_vout->fmt_render.i_height <= p_sys->main_window.i_height )
 288     {
 289         p_sys->i_video_width =
 290         p_vout->output.i_width =
 291         p_vout->fmt_out.i_width =
 292         p_vout->fmt_out.i_visible_width = p_vout->fmt_render.i_width;
 293         p_sys->i_video_height =
 294         p_vout->output.i_height =
 295         p_vout->fmt_out.i_height =
 296         p_vout->fmt_out.i_visible_height = p_vout->fmt_render.i_height;
 297     }
 298     else
 299     {
 300         p_sys->i_video_width =
 301         p_vout->output.i_width =
 302         p_vout->fmt_out.i_width =
 303         p_vout->fmt_out.i_visible_width = p_sys->output_window.i_width;
 304         p_sys->i_video_height =
 305         p_vout->output.i_height =
 306         p_vout->fmt_out.i_height =
 307         p_vout->fmt_out.i_visible_height = p_sys->output_window.i_height;
 308     }
 309
 310     p_vout->output.i_chroma =
 311     p_vout->fmt_out.i_chroma = VLC_FOURCC( 'Y','4','2','0' );
 312     p_sys->i_color_format = OMAPFB_COLOR_YUV420;
 313
 314     // place in the framebuffer where we have to write
 315     p_sys->p_center = p_sys->p_video + p_sys->output_window.i_x*p_sys->i_bytes_per_pixel
 316                       + p_sys->output_window.i_y*p_sys->i_line_len;
 317
 318     // We get and set a direct render vlc picture
 319     I_OUTPUTPICTURES = 0;
 320     picture_t *p_pic = NULL;
 321     int i_index;
 322
 323     for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 324     {
 325         if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 326         {
 327             p_pic = p_vout->p_picture + i_index;
 328             break;
 329         }
 330     }
 331
 332     /* Allocate the picture */
 333     if( p_pic == NULL )
 334     {
 335         return VLC_EGENERIC;
 336     }
 337
 338     p_sys->p_output_picture = p_pic;
 339     p_pic->p->p_pixels = p_vout->p_sys->p_center;
 340     p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
 341     p_pic->p->i_lines = p_sys->i_video_height;
 342     p_pic->p->i_visible_lines = p_sys->i_video_height;
 343     p_pic->p->i_pitch = p_sys->i_line_len;
 344     p_pic->p->i_visible_pitch = p_sys->i_line_len;
 345     p_pic->i_planes = 1;
 346     p_pic->i_status = DESTROYED_PICTURE;
 347     p_pic->i_type   = DIRECT_PICTURE;
 348
 349     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 350
 351     I_OUTPUTPICTURES++;
 352
 353     return VLC_SUCCESS;
 354 }
 355
 356 /*****************************************************************************
 357  * End: terminate omap framebuffer video thread output method
 358  *****************************************************************************/
 359 static void End( vout_thread_t *p_vout )
 360 {
 361     /* Clear the screen */
 362     UpdateScreen( p_vout, 0, 0,
 363                   p_vout->p_sys->fb_vinfo.xres,
 364                   p_vout->p_sys->fb_vinfo.yres,
 365                   p_vout->p_sys->fb_vinfo.xres,
 366                   p_vout->p_sys->fb_vinfo.yres,
 367                   OMAPFB_COLOR_RGB565 );
 368 }
 369
 370 /*****************************************************************************
 371  * Control: control facility for the vout
 372  *****************************************************************************/
 373 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 374 {
 375     return VLC_EGENERIC;
 376 }
 377
 378 /*****************************************************************************
 379 * FreePicture: Destroy the picture and make it free again
 380 ******************************************************************************/
 381 static void FreePicture( vout_thread_t *p_vout, picture_t *p_pic )
 382 {
 383     p_pic->p->p_pixels = NULL;
 384     p_pic->i_status = FREE_PICTURE;
 385 }
 386
 387 /*****************************************************************************
 388  * Manage: handle omapfb events
 389  *****************************************************************************
 390  * This function should be called regularly by video output thread.
 391  *****************************************************************************/
 392 static int Manage( vout_thread_t *p_vout )
 393 {
 394     XEvent xevent;
 395
 396     while( XPending( p_vout->p_sys->p_display ) )
 397     {
 398         XNextEvent( p_vout->p_sys->p_display, &xevent );
 399
 400         if( xevent.type == ButtonPress &&
 401             ((XButtonEvent *)&xevent)->button == Button1 )
 402         {
 403             /* detect double-clicks */
 404             if( ( ((XButtonEvent *)&xevent)->time -
 405                     p_vout->p_sys->i_time_button_last_pressed ) < 300 )
 406             {
 407                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 408             }
 409
 410             p_vout->p_sys->i_time_button_last_pressed =
 411                         ((XButtonEvent *)&xevent)->time;
 412         }
 413         else if( xevent.type == KeyPress )
 414         {
 415             KeySym x_key_symbol;
 416             vlc_value_t val;
 417
 418             x_key_symbol = XKeycodeToKeysym( p_vout->p_sys->p_display,
 419                                              xevent.xkey.keycode, 0 );
 420
 421             switch( x_key_symbol )
 422             {
 423             case XK_Return:
 424                 val.i_int = ACTIONID_PLAY_PAUSE; break;
 425             case XK_Escape:
 426                 val.i_int = ACTIONID_QUIT; break;
 427             case XK_Down:
 428                 val.i_int = ACTIONID_JUMP_BACKWARD_MEDIUM; break;
 429             case XK_Up:
 430                 val.i_int = ACTIONID_JUMP_FORWARD_MEDIUM; break;
 431             case XK_Right:
 432                 val.i_int = ACTIONID_JUMP_FORWARD_SHORT; break;
 433             case XK_Left:
 434                 val.i_int = ACTIONID_JUMP_BACKWARD_SHORT; break;
 435             case XK_F6:
 436                 val.i_int = ACTIONID_TOGGLE_FULLSCREEN; break;
 437             case XK_F7:
 438                 val.i_int = ACTIONID_VOL_UP; break;
 439             case XK_F8:
 440                 val.i_int = ACTIONID_VOL_DOWN; break;
 441             }
 442             var_SetInteger( p_vout->p_libvlc, "key-action", val.i_int );
 443         }
 444         else if( ( xevent.type == VisibilityNotify &&
 445                  xevent.xvisibility.state == VisibilityUnobscured ) ||
 446                  xevent.type == FocusIn )
 447         {
 448             p_vout->p_sys->b_video_enabled = true;
 449             p_vout->p_sys->p_output_picture->p->p_pixels =
 450                 p_vout->p_sys->p_center;
 451             XSetInputFocus( p_vout->p_sys->p_display, p_vout->p_sys->window,
 452                             RevertToParent, CurrentTime );
 453         }
 454         else if( ( xevent.type == VisibilityNotify &&
 455                  xevent.xvisibility.state != VisibilityUnobscured ) ||
 456                  xevent.type == FocusOut || xevent.type == UnmapNotify )
 457         {
 458             UpdateScreen( p_vout, 0, 0,
 459                           p_vout->p_sys->fb_vinfo.xres,
 460                           p_vout->p_sys->fb_vinfo.yres,
 461                           p_vout->p_sys->fb_vinfo.xres,
 462                           p_vout->p_sys->fb_vinfo.yres,
 463                           OMAPFB_COLOR_RGB565 );
 464             p_vout->p_sys->b_video_enabled = false;
 465             p_vout->p_sys->p_output_picture->p->p_pixels =
 466                 p_vout->p_sys->p_null;
 467          }
 468     }
 469
 470     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 471     {
 472         /* Update the object variable and trigger callback */
 473         var_SetBool( p_vout, "fullscreen", !p_vout->b_fullscreen );
 474
 475         if( p_vout->p_sys->b_embed )
 476             ToggleFullScreen( p_vout );
 477         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 478     }
 479
 480     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 481     {
 482         FreePicture( p_vout, p_vout->p_sys->p_output_picture );
 483         if( Init( p_vout ) )
 484         {
 485             msg_Err( p_vout, "cannot reinit framebuffer screen" );
 486             return VLC_EGENERIC;
 487         }
 488     }
 489
 490
 491 #ifdef HAVE_OSSO
 492     if ( p_vout->p_sys->p_octx != NULL ) {
 493         if ( p_vout->p_sys->i_backlight_on_counter == i_backlight_on_interval ) {
 494             if ( osso_display_blanking_pause( p_vout->p_sys->p_octx ) != OSSO_OK ) {
 495                 msg_Err( p_vout, "Could not disable backlight blanking" );
 496         } else {
 497                 msg_Dbg( p_vout, "Backlight blanking disabled" );
 498             }
 499             p_vout->p_sys->i_backlight_on_counter = 0;
 500         } else {
 501             p_vout->p_sys->i_backlight_on_counter ++;
 502         }
 503     }
 504 #endif
 505
 506     return VLC_SUCCESS;
 507 }
 508
 509 /*****************************************************************************
 510  * DisplayVideo: displays previously rendered output
 511  *****************************************************************************
 512  * This function update the screen resulting in the display of the last
 513  * rendered picture.
 514  *****************************************************************************/
 515 static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
 516 {
 517     VLC_UNUSED( p_pic );
 518
 519     if( !p_vout->p_sys->b_video_enabled )
 520         return;
 521
 522     UpdateScreen( p_vout,
 523                   p_vout->p_sys->output_window.i_x,
 524                   p_vout->p_sys->output_window.i_y,
 525                   p_vout->p_sys->i_video_width,
 526                   p_vout->p_sys->i_video_height,
 527                   p_vout->p_sys->output_window.i_width,
 528                   p_vout->p_sys->output_window.i_height,
 529                   p_vout->p_sys->i_color_format );
 530
 531     // Wait for the window to be fully displayed
 532     ioctl( p_vout->p_sys->i_fd, OMAPFB_SYNC_GFX);
 533 }
 534
 535 /*****************************************************************************
 536  * OpenDisplay: initialize framebuffer
 537  *****************************************************************************/
 538 static int OpenDisplay( vout_thread_t *p_vout )
 539 {
 540     vout_sys_t *p_sys = (vout_sys_t *) p_vout->p_sys;
 541     char *psz_device;                             /* framebuffer device path */
 542
 543     /* Open framebuffer device */
 544     if( !(psz_device = config_GetPsz( p_vout, FB_DEV_VAR )) )
 545     {
 546         msg_Err( p_vout, "don't know which fb device to open" );
 547         return VLC_EGENERIC;
 548     }
 549
 550     p_sys->i_fd = open( psz_device, O_RDWR );
 551     if( p_sys->i_fd == -1 )
 552     {
 553         msg_Err( p_vout, "cannot open %s (%m)", psz_device );
 554         free( psz_device );
 555         return VLC_EGENERIC;
 556     }
 557     free( psz_device );
 558
 559     // Get caps, try older interface if needed
 560     if( ioctl( p_sys->i_fd, OMAPFB_GET_CAPS, &p_sys->caps ) != 0 )
 561     {
 562         if( ioctl( p_sys->i_fd, OMAP_IOR( 42, unsigned long ), &p_sys->caps ) != 0 )
 563         {
 564             msg_Err( p_vout, "OMAPFB_GET_CAPS ioctl failed" );
 565             close( p_sys->i_fd );
 566             return VLC_EGENERIC;
 567         }
 568     }
 569
 570     if( ( p_sys->caps.ctrl & OMAPFB_CAPS_TEARSYNC ) != 0 )
 571         p_sys->b_tearsync = true;
 572
 573     if( ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->fb_vinfo ) )
 574     {
 575         msg_Err( p_vout, "Can't get VSCREENINFO: %s", strerror(errno) );
 576         close( p_sys->i_fd );
 577         return VLC_EGENERIC;
 578     }
 579     if( ioctl( p_sys->i_fd, FBIOGET_FSCREENINFO, &p_sys->fb_finfo ) )
 580     {
 581         msg_Err( p_vout, "Can't get FSCREENINFO: %s", strerror(errno) );
 582         close( p_sys->i_fd );
 583         return VLC_EGENERIC;
 584     }
 585
 586     p_sys->i_bytes_per_pixel = 2;
 587     p_sys->i_page_size = p_sys->fb_finfo.smem_len;
 588     p_sys->i_line_len = p_sys->fb_finfo.line_length;
 589
 590     if( (p_sys->p_video = (uint8_t *)mmap( 0, p_sys->i_page_size, PROT_READ | PROT_WRITE, MAP_SHARED,
 591                                             p_sys->i_fd, 0 )) == MAP_FAILED )
 592     {
 593         msg_Err( p_vout, "Can't mmap: %s", strerror(errno) );
 594         close( p_sys->i_fd );
 595         return VLC_EGENERIC;
 596     }
 597
 598     p_sys->p_display = XOpenDisplay( NULL );
 599
 600     /* Open /dev/null and map it */
 601     p_sys->i_null_fd = open( "/dev/zero", O_RDWR );
 602     if( p_sys->i_null_fd == -1 )
 603     {
 604         msg_Err( p_vout, "cannot open /dev/zero (%m)" );
 605         munmap( p_sys->p_video, p_sys->i_page_size );
 606         close( p_sys->i_fd );
 607         return VLC_EGENERIC;
 608     }
 609
 610     if( (p_sys->p_null = (uint8_t *)mmap( 0, p_sys->i_page_size, PROT_READ | PROT_WRITE,
 611                                           MAP_PRIVATE, p_sys->i_null_fd, 0 )) == MAP_FAILED )
 612     {
 613         msg_Err( p_vout, "Can't mmap 2: %s", strerror(errno) );
 614         munmap( p_sys->p_video, p_sys->i_page_size );
 615         close( p_sys->i_null_fd );
 616         close( p_sys->i_fd );
 617         return VLC_EGENERIC;
 618     }
 619
 620     return VLC_SUCCESS;
 621 }
 622
 623 /*****************************************************************************
 624  * CloseDisplay: terminate FB video thread output method
 625  *****************************************************************************/
 626 static void CloseDisplay( vout_thread_t *p_vout )
 627 {
 628     munmap( p_vout->p_sys->p_video, p_vout->p_sys->i_page_size );
 629     munmap( p_vout->p_sys->p_null,  p_vout->p_sys->i_page_size );
 630
 631     close( p_vout->p_sys->i_fd );
 632     close( p_vout->p_sys->i_null_fd );
 633 }
 634
 635 /*****************************************************************************
 636  * UpdateScreen: update the screen of the omapfb
 637  *****************************************************************************/
 638 static void UpdateScreen( vout_thread_t *p_vout, int i_x, int i_y,
 639                           int i_width, int i_height,
 640                           int i_out_width, int i_out_height, int i_format )
 641 {
 642     struct omapfb_update_window update;
 643     update.x = i_x;
 644     update.y = i_y;
 645     update.width = i_width;
 646     update.height = i_height;
 647     update.out_x = i_x;
 648     update.out_y = i_y;
 649     update.out_width = i_out_width;
 650     update.out_height = i_out_height;
 651     update.format = i_format;
 652     if( p_vout->p_sys->b_tearsync )
 653         update.format |= OMAPFB_FORMAT_FLAG_TEARSYNC;
 654     ioctl( p_vout->p_sys->i_fd, OMAPFB_UPDATE_WINDOW, &update );
 655 }
 656
 657 /*****************************************************************************
 658  * InitWindow: get embedded window and init X11
 659  *****************************************************************************/
 660 static int InitWindow( vout_thread_t *p_vout )
 661 {
 662     vout_sys_t *p_sys = (vout_sys_t *)p_vout->p_sys;
 663
 664     if( p_sys->b_embed )
 665     {
 666         p_sys->p_display = XOpenDisplay( NULL );
 667
 668         // Request window from interface
 669         p_sys->owner_window =
 670             vout_RequestXWindow( p_vout,
 671                                 &p_sys->embedded_window.i_x,
 672                                 &p_sys->embedded_window.i_y,
 673                                 &p_sys->embedded_window.i_width,
 674                                 &p_sys->embedded_window.i_height );
 675         p_sys->main_window = p_sys->embedded_window;
 676
 677         // We have to create a new window to get some events
 678         // (ButtonPress for example)
 679         CreateWindow( p_sys );
 680     }
 681     else
 682     {
 683         // No embedding, fullscreen framebuffer overlay with no events handling
 684         p_sys->main_window.i_x = p_sys->main_window.i_y = 0;
 685         p_sys->main_window.i_width = p_sys->fb_vinfo.xres;
 686         p_sys->main_window.i_height = p_sys->fb_vinfo.yres;
 687         p_vout->b_fullscreen = true;
 688         var_SetBool( p_vout, "fullscreen", p_vout->b_fullscreen );
 689     }
 690
 691     return VLC_SUCCESS;
 692 }
 693
 694 static void CreateWindow( vout_sys_t *p_sys )
 695 {
 696     XSetWindowAttributes    xwindow_attributes;
 697     xwindow_attributes.backing_store = Always;
 698     xwindow_attributes.background_pixel =
 699         BlackPixel( p_sys->p_display, DefaultScreen(p_sys->p_display) );
 700     xwindow_attributes.event_mask = ExposureMask | StructureNotifyMask;
 701     p_sys->window = XCreateWindow( p_sys->p_display,
 702                                    p_sys->owner_window->handle.xid,
 703                                    0, 0,
 704                                    p_sys->main_window.i_width,
 705                                    p_sys->main_window.i_height,
 706                                    0,
 707                                    0, InputOutput, 0,
 708                                    CWBackingStore | CWBackPixel | CWEventMask,
 709                                    &xwindow_attributes );
 710
 711     XMapWindow( p_sys->p_display, p_sys->window );
 712     XSelectInput( p_sys->p_display, p_sys->window,
 713                   KeyPressMask | ButtonPressMask | StructureNotifyMask |
 714                   VisibilityChangeMask | FocusChangeMask );
 715     XSelectInput( p_sys->p_display, p_sys->owner_window->handle.xid,
 716                   StructureNotifyMask );
 717     XSetInputFocus( p_sys->p_display, p_sys->window, RevertToParent, CurrentTime );
 718 }
 719
 720 static void ToggleFullScreen ( vout_thread_t * p_vout )
 721 {
 722     p_vout->b_fullscreen = !p_vout->b_fullscreen;
 723
 724     if( p_vout->b_fullscreen )
 725     {
 726         msg_Dbg( p_vout, "Entering fullscreen mode" );
 727         XReparentWindow( p_vout->p_sys->p_display,
 728                          p_vout->p_sys->window,
 729                          DefaultRootWindow( p_vout->p_sys->p_display ),
 730                          0, 0 );
 731
 732         XEvent xev;
 733
 734         /* init X event structure for _NET_WM_FULLSCREEN client msg */
 735         xev.xclient.type = ClientMessage;
 736         xev.xclient.serial = 0;
 737         xev.xclient.send_event = True;
 738         xev.xclient.message_type = XInternAtom( p_vout->p_sys->p_display,
 739                                                 "_NET_WM_STATE", False );
 740         xev.xclient.window = p_vout->p_sys->window;
 741         xev.xclient.format = 32;
 742         if( p_vout->b_fullscreen )
 743             xev.xclient.data.l[0] = 1;
 744         else
 745             xev.xclient.data.l[0] = 0;
 746         xev.xclient.data.l[1] = XInternAtom( p_vout->p_sys->p_display,
 747                                             "_NET_WM_STATE_FULLSCREEN", False );
 748         xev.xclient.data.l[2] = 0;
 749         xev.xclient.data.l[3] = 0;
 750         xev.xclient.data.l[4] = 0;
 751
 752         XSendEvent( p_vout->p_sys->p_display,
 753                     DefaultRootWindow( p_vout->p_sys->p_display ), False,
 754                     SubstructureRedirectMask | SubstructureNotifyMask, &xev);
 755
 756         p_vout->p_sys->main_window.i_x = p_vout->p_sys->main_window.i_y = 0;
 757         p_vout->p_sys->main_window.i_width = p_vout->p_sys->fb_vinfo.xres;
 758         p_vout->p_sys->main_window.i_height = p_vout->p_sys->fb_vinfo.yres;
 759     }
 760     else
 761     {
 762         msg_Dbg( p_vout, "Leaving fullscreen mode" );
 763
 764         XDestroyWindow( p_vout->p_sys->p_display, p_vout->p_sys->window );
 765
 766         p_vout->p_sys->main_window = p_vout->p_sys->embedded_window;
 767         CreateWindow( p_vout->p_sys );
 768     }
 769
 770     XSync( p_vout->p_sys->p_display, False);
 771
 772     /* signal that the size needs to be updated */
 773     p_vout->i_changes |= VOUT_SIZE_CHANGE;
 774 }