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  * $Id$
   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 information */
  89     int                 i_tty;                          /* tty device handle */
  90     struct termios      old_termios;
  91
  92     /* Original configuration information */
  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 information */
 100     struct fb_var_screeninfo    var_info;        /* current mode information */
 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     p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
 302
 303     if( p_vout->p_sys->var_info.xres_virtual )
 304     {
 305         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
 306                              * p_vout->p_sys->i_bytes_per_pixel;
 307     }
 308     else
 309     {
 310         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
 311                              * p_vout->p_sys->i_bytes_per_pixel;
 312     }
 313
 314     p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
 315                                  * p_vout->p_sys->i_bytes_per_pixel;
 316
 317     p_pic->i_planes = 1;
 318
 319     p_pic->i_status = DESTROYED_PICTURE;
 320     p_pic->i_type   = DIRECT_PICTURE;
 321
 322     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 323
 324     I_OUTPUTPICTURES++;
 325
 326     return VLC_SUCCESS;
 327 }
 328
 329 /*****************************************************************************
 330  * End: terminate framebuffer video thread output method
 331  *****************************************************************************/
 332 static void End( vout_thread_t *p_vout )
 333 {
 334     /* Clear the screen */
 335     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 336 }
 337
 338 /*****************************************************************************
 339  * Destroy: destroy FB video thread output method
 340  *****************************************************************************
 341  * Terminate an output method created by Create
 342  *****************************************************************************/
 343 static void Destroy( vlc_object_t *p_this )
 344 {
 345     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 346
 347     CloseDisplay( p_vout );
 348
 349     /* Reset the terminal */
 350     ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
 351
 352     /* Remove signal handlers */
 353     sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 354     sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 355
 356     /* Reset the keyboard state */
 357     tcsetattr( 0, 0, &p_vout->p_sys->old_termios );
 358
 359     /* Return to text mode */
 360     TextMode( p_vout->p_sys->i_tty );
 361
 362     /* Destroy structure */
 363     free( p_vout->p_sys );
 364 }
 365
 366 /*****************************************************************************
 367  * Manage: handle FB events
 368  *****************************************************************************
 369  * This function should be called regularly by video output thread. It manages
 370  * console events. It returns a non null value on error.
 371  *****************************************************************************/
 372 static int Manage( vout_thread_t *p_vout )
 373 {
 374 #if 0
 375     uint8_t buf;
 376
 377     if ( read(0, &buf, 1) == 1)
 378     {
 379         switch( buf )
 380         {
 381         case 'q':
 382             p_vout->p_vlc->b_die = 1;
 383             break;
 384
 385         default:
 386             break;
 387         }
 388     }
 389 #endif
 390
 391     /*
 392      * Size change
 393      */
 394     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 395     {
 396         msg_Dbg( p_vout, "reinitializing framebuffer screen" );
 397         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 398
 399         /* Destroy XImages to change their size */
 400         End( p_vout );
 401
 402         /* Recreate XImages. If SysInit failed, the thread can't go on. */
 403         if( Init( p_vout ) )
 404         {
 405             msg_Err( p_vout, "cannot reinit framebuffer screen" );
 406             return VLC_EGENERIC;
 407         }
 408
 409         /* Clear screen */
 410         memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 411
 412 #if 0
 413         /* Tell the video output thread that it will need to rebuild YUV
 414          * tables. This is needed since conversion buffer size may have changed */
 415         p_vout->i_changes |= VOUT_YUV_CHANGE;
 416 #endif
 417     }
 418
 419     return VLC_SUCCESS;
 420 }
 421
 422 /*****************************************************************************
 423  * Display: displays previously rendered output
 424  *****************************************************************************
 425  * This function send the currently rendered image to FB image, waits until
 426  * it is displayed and switch the two rendering buffers, preparing next frame.
 427  *****************************************************************************/
 428 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 429 {
 430 static int panned=0;
 431     /* swap the two Y offsets if the drivers supports panning */
 432     if( p_vout->p_sys->b_pan )
 433     {
 434         p_vout->p_sys->var_info.yoffset = 0;
 435         /*p_vout->p_sys->var_info.yoffset = p_vout->p_sys->var_info.yres; */
 436
 437         /* the X offset should be 0, but who knows ...
 438          * some other app might have played with the framebuffer */
 439         p_vout->p_sys->var_info.xoffset = 0;
 440
 441 if(panned < 0) {
 442         ioctl( p_vout->p_sys->i_fd,
 443                FBIOPAN_DISPLAY, &p_vout->p_sys->var_info );
 444 panned++;
 445 }
 446     }
 447 }
 448
 449 #if 0
 450 static void SetPalette( vout_thread_t *p_vout, uint16_t *red, uint16_t *green,
 451                                                uint16_t *blue, uint16_t *transp )
 452 {
 453     struct fb_cmap cmap = { 0, 256, red, green, blue, transp };
 454
 455     ioctl( p_vout->p_sys->i_fd, FBIOPUTCMAP, &cmap );
 456 }
 457 #endif
 458
 459 /* following functions are local */
 460
 461 /*****************************************************************************
 462  * OpenDisplay: initialize framebuffer
 463  *****************************************************************************/
 464 static int OpenDisplay( vout_thread_t *p_vout )
 465 {
 466     char *psz_device;                             /* framebuffer device path */
 467     struct fb_fix_screeninfo    fix_info;     /* framebuffer fix information */
 468
 469     /* Open framebuffer device */
 470     if( !(psz_device = config_GetPsz( p_vout, FB_DEV_VAR )) )
 471     {
 472         msg_Err( p_vout, "don't know which fb device to open" );
 473         return VLC_EGENERIC;
 474     }
 475
 476     p_vout->p_sys->i_fd = open( psz_device, O_RDWR);
 477
 478     if( p_vout->p_sys->i_fd == -1 )
 479     {
 480         msg_Err( p_vout, "cannot open %s (%s)", psz_device, strerror(errno) );
 481         free( psz_device );
 482         return VLC_EGENERIC;
 483     }
 484     free( psz_device );
 485
 486     /* Get framebuffer device information */
 487     if( ioctl( p_vout->p_sys->i_fd,
 488                FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 489     {
 490         msg_Err( p_vout, "cannot get fb info (%s)", strerror(errno) );
 491         close( p_vout->p_sys->i_fd );
 492         return VLC_EGENERIC;
 493     }
 494
 495     memcpy( &p_vout->p_sys->old_info, &p_vout->p_sys->var_info,
 496             sizeof( struct fb_var_screeninfo ) );
 497
 498     /* Set some attributes */
 499     p_vout->p_sys->var_info.activate = FB_ACTIVATE_NXTOPEN;
 500     p_vout->p_sys->var_info.xoffset =  0;
 501     p_vout->p_sys->var_info.yoffset =  0;
 502
 503     if( ioctl( p_vout->p_sys->i_fd,
 504                FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info ) )
 505     {
 506         msg_Err( p_vout, "cannot set fb info (%s)", strerror(errno) );
 507         close( p_vout->p_sys->i_fd );
 508         return VLC_EGENERIC;
 509     }
 510
 511     /* Get some information again, in the definitive configuration */
 512     if( ioctl( p_vout->p_sys->i_fd, FBIOGET_FSCREENINFO, &fix_info )
 513          || ioctl( p_vout->p_sys->i_fd,
 514                    FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 515     {
 516         msg_Err( p_vout, "cannot get additional fb info (%s)",
 517                           strerror(errno) );
 518
 519         /* Restore fb config */
 520         ioctl( p_vout->p_sys->i_fd,
 521                FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 522
 523         close( p_vout->p_sys->i_fd );
 524         return VLC_EGENERIC;
 525     }
 526
 527     /* FIXME: if the image is full-size, it gets cropped on the left
 528      * because of the xres / xres_virtual slight difference */
 529     msg_Dbg( p_vout, "%ix%i (virtual %ix%i)",
 530              p_vout->p_sys->var_info.xres, p_vout->p_sys->var_info.yres,
 531              p_vout->p_sys->var_info.xres_virtual,
 532              p_vout->p_sys->var_info.yres_virtual );
 533
 534     p_vout->p_sys->i_height = p_vout->p_sys->var_info.yres;
 535     p_vout->p_sys->i_width  = p_vout->p_sys->var_info.xres_virtual
 536                                ? p_vout->p_sys->var_info.xres_virtual
 537                                : p_vout->p_sys->var_info.xres;
 538
 539     p_vout->p_sys->p_palette = NULL;
 540     p_vout->p_sys->b_pan = ( fix_info.ypanstep || fix_info.ywrapstep );
 541
 542     switch( p_vout->p_sys->var_info.bits_per_pixel )
 543     {
 544     case 8:
 545         p_vout->p_sys->p_palette = malloc( 8 * 256 * sizeof( uint16_t ) );
 546         p_vout->p_sys->fb_cmap.start = 0;
 547         p_vout->p_sys->fb_cmap.len = 256;
 548         p_vout->p_sys->fb_cmap.red = p_vout->p_sys->p_palette;
 549         p_vout->p_sys->fb_cmap.green = p_vout->p_sys->p_palette + 256 * sizeof( uint16_t );
 550         p_vout->p_sys->fb_cmap.blue = p_vout->p_sys->p_palette + 2 * 256 * sizeof( uint16_t );
 551         p_vout->p_sys->fb_cmap.transp = p_vout->p_sys->p_palette + 3 * 256 * sizeof( uint16_t );
 552
 553         /* Save the colormap */
 554         ioctl( p_vout->p_sys->i_fd, FBIOGETCMAP, &p_vout->p_sys->fb_cmap );
 555
 556         p_vout->p_sys->i_bytes_per_pixel = 1;
 557         break;
 558
 559     case 15:
 560     case 16:
 561         p_vout->p_sys->i_bytes_per_pixel = 2;
 562         break;
 563
 564     case 24:
 565         p_vout->p_sys->i_bytes_per_pixel = 3;
 566         break;
 567
 568     case 32:
 569         p_vout->p_sys->i_bytes_per_pixel = 4;
 570         break;
 571
 572     default:
 573         msg_Err( p_vout, "screen depth %d is not supported",
 574                          p_vout->p_sys->var_info.bits_per_pixel );
 575
 576         /* Restore fb config */
 577         ioctl( p_vout->p_sys->i_fd,
 578                FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 579
 580         close( p_vout->p_sys->i_fd );
 581         return VLC_EGENERIC;
 582     }
 583
 584     p_vout->p_sys->i_page_size = p_vout->p_sys->i_width *
 585                 p_vout->p_sys->i_height * p_vout->p_sys->i_bytes_per_pixel;
 586
 587     /* Map a framebuffer at the beginning */
 588     p_vout->p_sys->p_video = mmap( 0, p_vout->p_sys->i_page_size,
 589                                    PROT_READ | PROT_WRITE, MAP_SHARED,
 590                                    p_vout->p_sys->i_fd, 0 );
 591
 592     if( p_vout->p_sys->p_video == ((void*)-1) )
 593     {
 594         msg_Err( p_vout, "cannot map video memory (%s)", strerror(errno) );
 595
 596         if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
 597         {
 598             free( p_vout->p_sys->p_palette );
 599         }
 600
 601         /* Restore fb config */
 602         ioctl( p_vout->p_sys->i_fd,
 603                FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 604
 605         close( p_vout->p_sys->i_fd );
 606         return VLC_EGENERIC;
 607     }
 608
 609     msg_Dbg( p_vout, "framebuffer type=%d, visual=%d, ypanstep=%d, "
 610              "ywrap=%d, accel=%d", fix_info.type, fix_info.visual,
 611              fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel );
 612     return VLC_SUCCESS;
 613 }
 614
 615 /*****************************************************************************
 616  * CloseDisplay: terminate FB video thread output method
 617  *****************************************************************************/
 618 static void CloseDisplay( vout_thread_t *p_vout )
 619 {
 620     /* Clear display */
 621     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 622
 623     /* Restore palette */
 624     if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
 625     {
 626         ioctl( p_vout->p_sys->i_fd,
 627                FBIOPUTCMAP, &p_vout->p_sys->fb_cmap );
 628         free( p_vout->p_sys->p_palette );
 629     }
 630
 631     /* Restore fb config */
 632     ioctl( p_vout->p_sys->i_fd,
 633            FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 634
 635     /* Close fb */
 636     close( p_vout->p_sys->i_fd );
 637 }
 638
 639 /*****************************************************************************
 640  * SwitchDisplay: VT change signal handler
 641  *****************************************************************************
 642  * This function activates or deactivates the output of the thread. It is
 643  * called by the VT driver, on terminal change.
 644  *****************************************************************************/
 645 static void SwitchDisplay(int i_signal)
 646 {
 647 #if 0
 648     vout_thread_t *p_vout;
 649
 650     vlc_mutex_lock( &p_vout_bank->lock );
 651
 652     /* XXX: only test the first video output */
 653     if( p_vout_bank->i_count )
 654     {
 655         p_vout = p_vout_bank->pp_vout[0];
 656
 657         switch( i_signal )
 658         {
 659         case SIGUSR1:                                /* vt has been released */
 660             p_vout->b_active = 0;
 661             ioctl( p_vout->p_sys->i_tty, VT_RELDISP, 1 );
 662             break;
 663         case SIGUSR2:                                /* vt has been acquired */
 664             p_vout->b_active = 1;
 665             ioctl( p_vout->p_sys->i_tty, VT_RELDISP, VT_ACTIVATE );
 666             /* handle blanking */
 667             vlc_mutex_lock( &p_vout->change_lock );
 668             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 669             vlc_mutex_unlock( &p_vout->change_lock );
 670             break;
 671         }
 672     }
 673
 674     vlc_mutex_unlock( &p_vout_bank->lock );
 675 #endif
 676 }
 677
 678 /*****************************************************************************
 679  * TextMode and GfxMode : switch tty to text/graphic mode
 680  *****************************************************************************
 681  * These functions toggle the tty mode.
 682  *****************************************************************************/
 683 static void TextMode( int i_tty )
 684 {
 685     /* return to text mode */
 686     if( -1 == ioctl(i_tty, KDSETMODE, KD_TEXT) )
 687     {
 688         /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_TEXT" );*/
 689     }
 690 }
 691
 692 static void GfxMode( int i_tty )
 693 {
 694     /* switch to graphic mode */
 695     if( -1 == ioctl(i_tty, KDSETMODE, KD_GRAPHICS) )
 696     {
 697         /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_GRAPHICS" );*/
 698     }
 699 }
 700