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

   1 /*****************************************************************************
   2  * fb.c : framebuffer plugin for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2000, 2001 VideoLAN
   5  * $Id: fb.c,v 1.9 2004/03/02 13:53:14 kuehne Exp $
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <errno.h>                                                 /* ENOMEM */
  28 #include <signal.h>                                      /* SIGUSR1, SIGUSR2 */
  29 #include <stdlib.h>                                                /* free() */
  30 #include <string.h>                                            /* strerror() */
  31 #include <fcntl.h>                                                 /* open() */
  32 #include <unistd.h>                                               /* close() */
  33
  34 #include <termios.h>                                       /* struct termios */
  35 #include <sys/ioctl.h>
  36 #include <sys/mman.h>                                              /* mmap() */
  37
  38 #include <linux/fb.h>
  39 #include <linux/vt.h>                                                /* VT_* */
  40 #include <linux/kd.h>                                                 /* KD* */
  41
  42 #include <vlc/vlc.h>
  43 #include <vlc/vout.h>
  44
  45 /*****************************************************************************
  46  * Local prototypes
  47  *****************************************************************************/
  48 static int  Create    ( vlc_object_t * );
  49 static void Destroy   ( vlc_object_t * );
  50
  51 static int  Init      ( vout_thread_t * );
  52 static void End       ( vout_thread_t * );
  53 static int  Manage    ( vout_thread_t * );
  54 static void Display   ( vout_thread_t *, picture_t * );
  55
  56 static int  OpenDisplay    ( vout_thread_t * );
  57 static void CloseDisplay   ( vout_thread_t * );
  58 static void SwitchDisplay  ( int i_signal );
  59 static void TextMode       ( int i_tty );
  60 static void GfxMode        ( int i_tty );
  61
  62 /*****************************************************************************
  63  * Module descriptor
  64  *****************************************************************************/
  65 #define FB_DEV_VAR "fbdev"
  66
  67 #define DEVICE_TEXT N_("Framebuffer device")
  68 #define DEVICE_LONGTEXT N_( \
  69     "You can select here the framebuffer device that will be used " \
  70     "for rendering (usually /dev/fb0).")
  71
  72 vlc_module_begin();
  73     add_file( FB_DEV_VAR, "/dev/fb0", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
  74               VLC_FALSE );
  75     set_description( _("GNU/Linux console framebuffer video output") );
  76     set_capability( "video output", 30 );
  77     set_callbacks( Create, Destroy );
  78 vlc_module_end();
  79
  80 /*****************************************************************************
  81  * vout_sys_t: video output framebuffer method descriptor
  82  *****************************************************************************
  83  * This structure is part of the video output thread descriptor.
  84  * It describes the FB specific properties of an output thread.
  85  *****************************************************************************/
  86 struct vout_sys_t
  87 {
  88     /* System informations */
  89     int                 i_tty;                          /* tty device handle */
  90     struct termios      old_termios;
  91
  92     /* Original configuration informations */
  93     struct sigaction            sig_usr1;           /* USR1 previous handler */
  94     struct sigaction            sig_usr2;           /* USR2 previous handler */
  95     struct vt_mode              vt_mode;                 /* previous VT mode */
  96
  97     /* Framebuffer information */
  98     int                         i_fd;                       /* device handle */
  99     struct fb_var_screeninfo    old_info;      /* original mode informations */
 100     struct fb_var_screeninfo    var_info;       /* current mode informations */
 101     vlc_bool_t                  b_pan;     /* does device supports panning ? */
 102     struct fb_cmap              fb_cmap;                /* original colormap */
 103     uint16_t                    *p_palette;              /* original palette */
 104
 105     /* Video information */
 106     int i_width;
 107     int i_height;
 108     int i_bytes_per_pixel;
 109
 110     /* Video memory */
 111     byte_t *    p_video;                                      /* base adress */
 112     size_t      i_page_size;                                    /* page size */
 113 };
 114
 115 /*****************************************************************************
 116  * Create: allocates FB video thread output method
 117  *****************************************************************************
 118  * This function allocates and initializes a FB vout method.
 119  *****************************************************************************/
 120 static int Create( vlc_object_t *p_this )
 121 {
 122     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 123
 124     struct sigaction    sig_tty;                 /* sigaction for tty change */
 125     struct vt_mode      vt_mode;                          /* vt current mode */
 126     struct termios      new_termios;
 127
 128     /* Allocate instance and initialize some members */
 129     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 130     if( p_vout->p_sys == NULL )
 131     {
 132         return VLC_ENOMEM;
 133     };
 134
 135     p_vout->pf_init = Init;
 136     p_vout->pf_end = End;
 137     p_vout->pf_manage = Manage;
 138     p_vout->pf_render = NULL;
 139     p_vout->pf_display = Display;
 140
 141     /* Set tty and fb devices */
 142     p_vout->p_sys->i_tty = 0;           /* 0 == /dev/tty0 == current console */
 143
 144     GfxMode( p_vout->p_sys->i_tty );
 145
 146     /* Set keyboard settings */
 147     if (tcgetattr(0, &p_vout->p_sys->old_termios) == -1)
 148     {
 149         msg_Err( p_vout, "tcgetattr failed" );
 150     }
 151
 152     if (tcgetattr(0, &new_termios) == -1)
 153     {
 154         msg_Err( p_vout, "tcgetattr failed" );
 155     }
 156
 157  /* new_termios.c_lflag &= ~ (ICANON | ISIG);
 158     new_termios.c_lflag |= (ECHO | ECHOCTL); */
 159     new_termios.c_lflag &= ~ (ICANON);
 160     new_termios.c_lflag &= ~(ECHO | ECHOCTL);
 161     new_termios.c_iflag = 0;
 162     new_termios.c_cc[VMIN] = 1;
 163     new_termios.c_cc[VTIME] = 0;
 164
 165     if (tcsetattr(0, TCSAFLUSH, &new_termios) == -1)
 166     {
 167         msg_Err( p_vout, "tcsetattr failed" );
 168     }
 169
 170     ioctl( p_vout->p_sys->i_tty, VT_RELDISP, VT_ACKACQ );
 171
 172     /* Set-up tty signal handler to be aware of tty changes */
 173     memset( &sig_tty, 0, sizeof( sig_tty ) );
 174     sig_tty.sa_handler = SwitchDisplay;
 175     sigemptyset( &sig_tty.sa_mask );
 176     if( sigaction( SIGUSR1, &sig_tty, &p_vout->p_sys->sig_usr1 ) ||
 177         sigaction( SIGUSR2, &sig_tty, &p_vout->p_sys->sig_usr2 ) )
 178     {
 179         msg_Err( p_vout, "cannot set signal handler (%s)", strerror(errno) );
 180         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 181         TextMode( p_vout->p_sys->i_tty );
 182         free( p_vout->p_sys );
 183         return VLC_EGENERIC;
 184     }
 185
 186     /* Set-up tty according to new signal handler */
 187     if( -1 == ioctl( p_vout->p_sys->i_tty,
 188                      VT_GETMODE, &p_vout->p_sys->vt_mode ) )
 189     {
 190         msg_Err( p_vout, "cannot get terminal mode (%s)", strerror(errno) );
 191         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 192         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 193         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 194         TextMode( p_vout->p_sys->i_tty );
 195         free( p_vout->p_sys );
 196         return VLC_EGENERIC;
 197     }
 198     memcpy( &vt_mode, &p_vout->p_sys->vt_mode, sizeof( vt_mode ) );
 199     vt_mode.mode   = VT_PROCESS;
 200     vt_mode.waitv  = 0;
 201     vt_mode.relsig = SIGUSR1;
 202     vt_mode.acqsig = SIGUSR2;
 203
 204     if( -1 == ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &vt_mode ) )
 205     {
 206         msg_Err( p_vout, "cannot set terminal mode (%s)", strerror(errno) );
 207         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 208         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 209         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 210         TextMode( p_vout->p_sys->i_tty );
 211         free( p_vout->p_sys );
 212         return VLC_EGENERIC;
 213     }
 214
 215     if( OpenDisplay( p_vout ) )
 216     {
 217         ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
 218         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 219         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 220         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 221         TextMode( p_vout->p_sys->i_tty );
 222         free( p_vout->p_sys );
 223         return VLC_EGENERIC;
 224     }
 225
 226     return VLC_SUCCESS;
 227 }
 228
 229 /*****************************************************************************
 230  * Init: initialize framebuffer video thread output method
 231  *****************************************************************************/
 232 static int Init( vout_thread_t *p_vout )
 233 {
 234     int i_index;
 235     picture_t *p_pic;
 236
 237     I_OUTPUTPICTURES = 0;
 238
 239     /* Initialize the output structure: RGB with square pixels, whatever
 240      * the input format is, since it's the only format we know */
 241     switch( p_vout->p_sys->var_info.bits_per_pixel )
 242     {
 243         case 8: /* FIXME: set the palette */
 244             p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
 245         case 15:
 246             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
 247         case 16:
 248             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
 249         case 24:
 250             p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
 251         case 32:
 252             p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
 253         default:
 254             msg_Err( p_vout, "unknown screen depth %i",
 255                      p_vout->p_sys->var_info.bits_per_pixel );
 256             return VLC_EGENERIC;
 257     }
 258
 259     /* Only useful for p_vout->p_sys->var_info.bits_per_pixel != 8 */
 260     p_vout->output.i_rmask = ( (1 << p_vout->p_sys->var_info.red.length) - 1 )
 261                      << p_vout->p_sys->var_info.red.offset;
 262     p_vout->output.i_gmask = ( (1 << p_vout->p_sys->var_info.green.length) - 1 )
 263                      << p_vout->p_sys->var_info.green.offset;
 264     p_vout->output.i_bmask = ( (1 << p_vout->p_sys->var_info.blue.length) - 1 )
 265                      << p_vout->p_sys->var_info.blue.offset;
 266
 267     p_vout->output.i_width = p_vout->p_sys->i_width;
 268     p_vout->output.i_height = p_vout->p_sys->i_height;
 269
 270     /* Assume we have square pixels */
 271     p_vout->output.i_aspect = p_vout->p_sys->i_width
 272                                * VOUT_ASPECT_FACTOR / p_vout->p_sys->i_height;
 273
 274     /* Clear the screen */
 275     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 276
 277     /* Try to initialize 1 direct buffer */
 278     p_pic = NULL;
 279
 280     /* Find an empty picture slot */
 281     for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 282     {
 283         if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 284         {
 285             p_pic = p_vout->p_picture + i_index;
 286             break;
 287         }
 288     }
 289
 290     /* Allocate the picture */
 291     if( p_pic == NULL )
 292     {
 293         return VLC_EGENERIC;
 294     }
 295
 296     /* We know the chroma, allocate a buffer which will be used
 297      * directly by the decoder */
 298     p_pic->p->p_pixels = p_vout->p_sys->p_video;
 299     p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
 300     p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
 301
 302     if( p_vout->p_sys->var_info.xres_virtual )
 303     {
 304         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
 305                              * p_vout->p_sys->i_bytes_per_pixel;
 306     }
 307     else
 308     {
 309         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
 310                              * p_vout->p_sys->i_bytes_per_pixel;
 311     }
 312
 313     p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
 314                                  * p_vout->p_sys->i_bytes_per_pixel;
 315
 316     p_pic->i_planes = 1;
 317
 318     p_pic->i_status = DESTROYED_PICTURE;
 319     p_pic->i_type   = DIRECT_PICTURE;
 320
 321     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 322
 323     I_OUTPUTPICTURES++;
 324
 325     return VLC_SUCCESS;
 326 }
 327
 328 /*****************************************************************************
 329  * End: terminate framebuffer video thread output method
 330  *****************************************************************************/
 331 static void End( vout_thread_t *p_vout )
 332 {
 333     /* Clear the screen */
 334     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 335 }
 336
 337 /*****************************************************************************
 338  * Destroy: destroy FB video thread output method
 339  *****************************************************************************
 340  * Terminate an output method created by Create
 341  *****************************************************************************/
 342 static void Destroy( vlc_object_t *p_this )
 343 {
 344     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 345
 346     CloseDisplay( p_vout );
 347
 348     /* Reset the terminal */
 349     ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
 350
 351     /* Remove signal handlers */
 352     sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 353     sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 354
 355     /* Reset the keyboard state */
 356     tcsetattr( 0, 0, &p_vout->p_sys->old_termios );
 357
 358     /* Return to text mode */
 359     TextMode( p_vout->p_sys->i_tty );
 360
 361     /* Destroy structure */
 362     free( p_vout->p_sys );
 363 }
 364
 365 /*****************************************************************************
 366  * Manage: handle FB events
 367  *****************************************************************************
 368  * This function should be called regularly by video output thread. It manages
 369  * console events. It returns a non null value on error.
 370  *****************************************************************************/
 371 static int Manage( vout_thread_t *p_vout )
 372 {
 373 #if 0
 374     uint8_t buf;
 375
 376     if ( read(0, &buf, 1) == 1)
 377     {
 378         switch( buf )
 379         {
 380         case 'q':
 381             p_vout->p_vlc->b_die = 1;
 382             break;
 383
 384         default:
 385             break;
 386         }
 387     }
 388 #endif
 389
 390     /*
 391      * Size change
 392      */
 393     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 394     {
 395         msg_Dbg( p_vout, "reinitializing framebuffer screen" );
 396         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 397
 398         /* Destroy XImages to change their size */
 399         End( p_vout );
 400
 401         /* Recreate XImages. If SysInit failed, the thread can't go on. */
 402         if( Init( p_vout ) )
 403         {
 404             msg_Err( p_vout, "cannot reinit framebuffer screen" );
 405             return VLC_EGENERIC;
 406         }
 407
 408         /* Clear screen */
 409         memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 410
 411 #if 0
 412         /* Tell the video output thread that it will need to rebuild YUV
 413          * tables. This is needed since conversion buffer size may have changed */
 414         p_vout->i_changes |= VOUT_YUV_CHANGE;
 415 #endif
 416     }
 417
 418     return VLC_SUCCESS;
 419 }
 420
 421 /*****************************************************************************
 422  * Display: displays previously rendered output
 423  *****************************************************************************
 424  * This function send the currently rendered image to FB image, waits until
 425  * it is displayed and switch the two rendering buffers, preparing next frame.
 426  *****************************************************************************/
 427 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 428 {
 429 static int panned=0;
 430     /* swap the two Y offsets if the drivers supports panning */
 431     if( p_vout->p_sys->b_pan )
 432     {
 433         p_vout->p_sys->var_info.yoffset = 0;
 434         /*p_vout->p_sys->var_info.yoffset = p_vout->p_sys->var_info.yres; */
 435
 436         /* the X offset should be 0, but who knows ...
 437          * some other app might have played with the framebuffer */
 438         p_vout->p_sys->var_info.xoffset = 0;
 439
 440 if(panned < 0) {
 441         ioctl( p_vout->p_sys->i_fd,
 442                FBIOPAN_DISPLAY, &p_vout->p_sys->var_info );
 443 panned++;
 444 }
 445     }
 446 }
 447
 448 #if 0
 449 static void SetPalette( vout_thread_t *p_vout, uint16_t *red, uint16_t *green,
 450                                                uint16_t *blue, uint16_t *transp )
 451 {
 452     struct fb_cmap cmap = { 0, 256, red, green, blue, transp };
 453
 454     ioctl( p_vout->p_sys->i_fd, FBIOPUTCMAP, &cmap );
 455 }
 456 #endif
 457
 458 /* following functions are local */
 459
 460 /*****************************************************************************
 461  * OpenDisplay: initialize framebuffer
 462  *****************************************************************************/
 463 static int OpenDisplay( vout_thread_t *p_vout )
 464 {
 465     char *psz_device;                             /* framebuffer device path */
 466     struct fb_fix_screeninfo    fix_info;     /* framebuffer fix information */
 467
 468     /* Open framebuffer device */
 469     if( !(psz_device = config_GetPsz( p_vout, FB_DEV_VAR )) )
 470     {
 471         msg_Err( p_vout, "don't know which fb device to open" );
 472         return VLC_EGENERIC;
 473     }
 474
 475     p_vout->p_sys->i_fd = open( psz_device, O_RDWR);
 476
 477     if( p_vout->p_sys->i_fd == -1 )
 478     {
 479         msg_Err( p_vout, "cannot open %s (%s)", psz_device, strerror(errno) );
 480         free( psz_device );
 481         return VLC_EGENERIC;
 482     }
 483     free( psz_device );
 484
 485     /* Get framebuffer device informations */
 486     if( ioctl( p_vout->p_sys->i_fd,
 487                FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 488     {
 489         msg_Err( p_vout, "cannot get fb info (%s)", strerror(errno) );
 490         close( p_vout->p_sys->i_fd );
 491         return VLC_EGENERIC;
 492     }
 493
 494     memcpy( &p_vout->p_sys->old_info, &p_vout->p_sys->var_info,
 495             sizeof( struct fb_var_screeninfo ) );
 496
 497     /* Set some attributes */
 498     p_vout->p_sys->var_info.activate = FB_ACTIVATE_NXTOPEN;
 499     p_vout->p_sys->var_info.xoffset =  0;
 500     p_vout->p_sys->var_info.yoffset =  0;
 501
 502     if( ioctl( p_vout->p_sys->i_fd,
 503                FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info ) )
 504     {
 505         msg_Err( p_vout, "cannot set fb info (%s)", strerror(errno) );
 506         close( p_vout->p_sys->i_fd );
 507         return VLC_EGENERIC;
 508     }
 509
 510     /* Get some informations again, in the definitive configuration */
 511     if( ioctl( p_vout->p_sys->i_fd, FBIOGET_FSCREENINFO, &fix_info )
 512          || ioctl( p_vout->p_sys->i_fd,
 513                    FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 514     {
 515         msg_Err( p_vout, "cannot get additional fb info (%s)",
 516                           strerror(errno) );
 517
 518         /* Restore fb config */
 519         ioctl( p_vout->p_sys->i_fd,
 520                FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 521
 522         close( p_vout->p_sys->i_fd );
 523         return VLC_EGENERIC;
 524     }
 525
 526     /* FIXME: if the image is full-size, it gets cropped on the left
 527      * because of the xres / xres_virtual slight difference */
 528     msg_Dbg( p_vout, "%ix%i (virtual %ix%i)",
 529              p_vout->p_sys->var_info.xres, p_vout->p_sys->var_info.yres,
 530              p_vout->p_sys->var_info.xres_virtual,
 531              p_vout->p_sys->var_info.yres_virtual );
 532
 533     p_vout->p_sys->i_height = p_vout->p_sys->var_info.yres;
 534     p_vout->p_sys->i_width  = p_vout->p_sys->var_info.xres_virtual
 535                                ? p_vout->p_sys->var_info.xres_virtual
 536                                : p_vout->p_sys->var_info.xres;
 537
 538     p_vout->p_sys->p_palette = NULL;
 539     p_vout->p_sys->b_pan = ( fix_info.ypanstep || fix_info.ywrapstep );
 540
 541     switch( p_vout->p_sys->var_info.bits_per_pixel )
 542     {
 543     case 8:
 544         p_vout->p_sys->p_palette = malloc( 8 * 256 * sizeof( uint16_t ) );
 545         p_vout->p_sys->fb_cmap.start = 0;
 546         p_vout->p_sys->fb_cmap.len = 256;
 547         p_vout->p_sys->fb_cmap.red = p_vout->p_sys->p_palette;
 548         p_vout->p_sys->fb_cmap.green = p_vout->p_sys->p_palette + 256 * sizeof( uint16_t );
 549         p_vout->p_sys->fb_cmap.blue = p_vout->p_sys->p_palette + 2 * 256 * sizeof( uint16_t );
 550         p_vout->p_sys->fb_cmap.transp = p_vout->p_sys->p_palette + 3 * 256 * sizeof( uint16_t );
 551
 552         /* Save the colormap */
 553         ioctl( p_vout->p_sys->i_fd, FBIOGETCMAP, &p_vout->p_sys->fb_cmap );
 554
 555         p_vout->p_sys->i_bytes_per_pixel = 1;
 556         break;
 557
 558     case 15:
 559     case 16:
 560         p_vout->p_sys->i_bytes_per_pixel = 2;
 561         break;
 562
 563     case 24:
 564         p_vout->p_sys->i_bytes_per_pixel = 3;
 565         break;
 566
 567     case 32:
 568         p_vout->p_sys->i_bytes_per_pixel = 4;
 569         break;
 570
 571     default:
 572         msg_Err( p_vout, "screen depth %d is not supported",
 573                          p_vout->p_sys->var_info.bits_per_pixel );
 574
 575         /* Restore fb config */
 576         ioctl( p_vout->p_sys->i_fd,
 577                FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 578
 579         close( p_vout->p_sys->i_fd );
 580         return VLC_EGENERIC;
 581     }
 582
 583     p_vout->p_sys->i_page_size = p_vout->p_sys->i_width *
 584                 p_vout->p_sys->i_height * p_vout->p_sys->i_bytes_per_pixel;
 585
 586     /* Map a framebuffer at the beginning */
 587     p_vout->p_sys->p_video = mmap( 0, p_vout->p_sys->i_page_size,
 588                                    PROT_READ | PROT_WRITE, MAP_SHARED,
 589                                    p_vout->p_sys->i_fd, 0 );
 590
 591     if( p_vout->p_sys->p_video == ((void*)-1) )
 592     {
 593         msg_Err( p_vout, "cannot map video memory (%s)", strerror(errno) );
 594
 595         if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
 596         {
 597             free( p_vout->p_sys->p_palette );
 598         }
 599
 600         /* Restore fb config */
 601         ioctl( p_vout->p_sys->i_fd,
 602                FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 603
 604         close( p_vout->p_sys->i_fd );
 605         return VLC_EGENERIC;
 606     }
 607
 608     msg_Dbg( p_vout, "framebuffer type=%d, visual=%d, ypanstep=%d, "
 609              "ywrap=%d, accel=%d", fix_info.type, fix_info.visual,
 610              fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel );
 611     return VLC_SUCCESS;
 612 }
 613
 614 /*****************************************************************************
 615  * CloseDisplay: terminate FB video thread output method
 616  *****************************************************************************/
 617 static void CloseDisplay( vout_thread_t *p_vout )
 618 {
 619     /* Clear display */
 620     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 621
 622     /* Restore palette */
 623     if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
 624     {
 625         ioctl( p_vout->p_sys->i_fd,
 626                FBIOPUTCMAP, &p_vout->p_sys->fb_cmap );
 627         free( p_vout->p_sys->p_palette );
 628     }
 629
 630     /* Restore fb config */
 631     ioctl( p_vout->p_sys->i_fd,
 632            FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 633
 634     /* Close fb */
 635     close( p_vout->p_sys->i_fd );
 636 }
 637
 638 /*****************************************************************************
 639  * SwitchDisplay: VT change signal handler
 640  *****************************************************************************
 641  * This function activates or deactivates the output of the thread. It is
 642  * called by the VT driver, on terminal change.
 643  *****************************************************************************/
 644 static void SwitchDisplay(int i_signal)
 645 {
 646 #if 0
 647     vout_thread_t *p_vout;
 648
 649     vlc_mutex_lock( &p_vout_bank->lock );
 650
 651     /* XXX: only test the first video output */
 652     if( p_vout_bank->i_count )
 653     {
 654         p_vout = p_vout_bank->pp_vout[0];
 655
 656         switch( i_signal )
 657         {
 658         case SIGUSR1:                                /* vt has been released */
 659             p_vout->b_active = 0;
 660             ioctl( p_vout->p_sys->i_tty, VT_RELDISP, 1 );
 661             break;
 662         case SIGUSR2:                                /* vt has been acquired */
 663             p_vout->b_active = 1;
 664             ioctl( p_vout->p_sys->i_tty, VT_RELDISP, VT_ACTIVATE );
 665             /* handle blanking */
 666             vlc_mutex_lock( &p_vout->change_lock );
 667             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 668             vlc_mutex_unlock( &p_vout->change_lock );
 669             break;
 670         }
 671     }
 672
 673     vlc_mutex_unlock( &p_vout_bank->lock );
 674 #endif
 675 }
 676
 677 /*****************************************************************************
 678  * TextMode and GfxMode : switch tty to text/graphic mode
 679  *****************************************************************************
 680  * These functions toggle the tty mode.
 681  *****************************************************************************/
 682 static void TextMode( int i_tty )
 683 {
 684     /* return to text mode */
 685     if( -1 == ioctl(i_tty, KDSETMODE, KD_TEXT) )
 686     {
 687         /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_TEXT" );*/
 688     }
 689 }
 690
 691 static void GfxMode( int i_tty )
 692 {
 693     /* switch to graphic mode */
 694     if( -1 == ioctl(i_tty, KDSETMODE, KD_GRAPHICS) )
 695     {
 696         /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_GRAPHICS" );*/
 697     }
 698 }
 699