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 the VideoLAN team
   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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <errno.h>                                                 /* ENOMEM */
  28 #include <signal.h>                                      /* SIGUSR1, SIGUSR2 */
  29 #include <string.h>                                            /* strerror() */
  30 #include <fcntl.h>                                                 /* open() */
  31 #include <unistd.h>                                               /* close() */
  32
  33 #include <termios.h>                                       /* struct termios */
  34 #include <sys/ioctl.h>
  35 #include <sys/mman.h>                                              /* mmap() */
  36
  37 #include <linux/fb.h>
  38 #include <linux/vt.h>                                                /* VT_* */
  39 #include <linux/kd.h>                                                 /* KD* */
  40
  41 #include <vlc/vlc.h>
  42 #include <vlc_vout.h>
  43
  44 /*****************************************************************************
  45  * Local prototypes
  46  *****************************************************************************/
  47 static int  Create    ( vlc_object_t * );
  48 static void Destroy   ( vlc_object_t * );
  49
  50 static int  Init      ( vout_thread_t * );
  51 static void End       ( vout_thread_t * );
  52 static int  Manage    ( vout_thread_t * );
  53 static void Display   ( vout_thread_t *, picture_t * );
  54
  55 static int  OpenDisplay    ( vout_thread_t * );
  56 static void CloseDisplay   ( vout_thread_t * );
  57 static void SwitchDisplay  ( int i_signal );
  58 static void TextMode       ( int i_tty );
  59 static void GfxMode        ( int i_tty );
  60
  61 /*****************************************************************************
  62  * Module descriptor
  63  *****************************************************************************/
  64 #define FB_DEV_VAR "fbdev"
  65
  66 #define DEVICE_TEXT N_("Framebuffer device")
  67 #define DEVICE_LONGTEXT N_( \
  68     "Framebuffer device to use for rendering (usually /dev/fb0).")
  69
  70 vlc_module_begin();
  71     set_shortname( "Framebuffer" );
  72     set_category( CAT_VIDEO );
  73     set_subcategory( SUBCAT_VIDEO_VOUT );
  74     add_file( FB_DEV_VAR, "/dev/fb0", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
  75               VLC_FALSE );
  76     set_description( _("GNU/Linux console framebuffer video output") );
  77     set_capability( "video output", 30 );
  78     set_callbacks( Create, Destroy );
  79 vlc_module_end();
  80
  81 /*****************************************************************************
  82  * vout_sys_t: video output framebuffer method descriptor
  83  *****************************************************************************
  84  * This structure is part of the video output thread descriptor.
  85  * It describes the FB specific properties of an output thread.
  86  *****************************************************************************/
  87 struct vout_sys_t
  88 {
  89     /* System information */
  90     int                 i_tty;                          /* tty device handle */
  91     struct termios      old_termios;
  92
  93     /* Original configuration information */
  94     struct sigaction            sig_usr1;           /* USR1 previous handler */
  95     struct sigaction            sig_usr2;           /* USR2 previous handler */
  96     struct vt_mode              vt_mode;                 /* previous VT mode */
  97
  98     /* Framebuffer information */
  99     int                         i_fd;                       /* device handle */
 100     struct fb_var_screeninfo    old_info;       /* original mode information */
 101     struct fb_var_screeninfo    var_info;        /* current mode information */
 102     vlc_bool_t                  b_pan;     /* does device supports panning ? */
 103     struct fb_cmap              fb_cmap;                /* original colormap */
 104     uint16_t                    *p_palette;              /* original palette */
 105
 106     /* Video information */
 107     int i_width;
 108     int i_height;
 109     int i_bytes_per_pixel;
 110
 111     /* Video memory */
 112     byte_t *    p_video;                                      /* base adress */
 113     size_t      i_page_size;                                    /* page size */
 114 };
 115
 116 /*****************************************************************************
 117  * Create: allocates FB video thread output method
 118  *****************************************************************************
 119  * This function allocates and initializes a FB vout method.
 120  *****************************************************************************/
 121 static int Create( vlc_object_t *p_this )
 122 {
 123     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 124
 125     struct sigaction    sig_tty;                 /* sigaction for tty change */
 126     struct vt_mode      vt_mode;                          /* vt current mode */
 127     struct termios      new_termios;
 128
 129     /* Allocate instance and initialize some members */
 130     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 131     if( p_vout->p_sys == NULL )
 132     {
 133         return VLC_ENOMEM;
 134     };
 135
 136     p_vout->pf_init = Init;
 137     p_vout->pf_end = End;
 138     p_vout->pf_manage = Manage;
 139     p_vout->pf_render = NULL;
 140     p_vout->pf_display = Display;
 141
 142     /* Set tty and fb devices */
 143     p_vout->p_sys->i_tty = 0;           /* 0 == /dev/tty0 == current console */
 144
 145     GfxMode( p_vout->p_sys->i_tty );
 146
 147     /* Set keyboard settings */
 148     if (tcgetattr(0, &p_vout->p_sys->old_termios) == -1)
 149     {
 150         msg_Err( p_vout, "tcgetattr failed" );
 151     }
 152
 153     if (tcgetattr(0, &new_termios) == -1)
 154     {
 155         msg_Err( p_vout, "tcgetattr failed" );
 156     }
 157
 158  /* new_termios.c_lflag &= ~ (ICANON | ISIG);
 159     new_termios.c_lflag |= (ECHO | ECHOCTL); */
 160     new_termios.c_lflag &= ~ (ICANON);
 161     new_termios.c_lflag &= ~(ECHO | ECHOCTL);
 162     new_termios.c_iflag = 0;
 163     new_termios.c_cc[VMIN] = 1;
 164     new_termios.c_cc[VTIME] = 0;
 165
 166     if (tcsetattr(0, TCSAFLUSH, &new_termios) == -1)
 167     {
 168         msg_Err( p_vout, "tcsetattr failed" );
 169     }
 170
 171     ioctl( p_vout->p_sys->i_tty, VT_RELDISP, VT_ACKACQ );
 172
 173     /* Set-up tty signal handler to be aware of tty changes */
 174     memset( &sig_tty, 0, sizeof( sig_tty ) );
 175     sig_tty.sa_handler = SwitchDisplay;
 176     sigemptyset( &sig_tty.sa_mask );
 177     if( sigaction( SIGUSR1, &sig_tty, &p_vout->p_sys->sig_usr1 ) ||
 178         sigaction( SIGUSR2, &sig_tty, &p_vout->p_sys->sig_usr2 ) )
 179     {
 180         msg_Err( p_vout, "cannot set signal handler (%s)", strerror(errno) );
 181         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 182         TextMode( p_vout->p_sys->i_tty );
 183         free( p_vout->p_sys );
 184         return VLC_EGENERIC;
 185     }
 186
 187     /* Set-up tty according to new signal handler */
 188     if( -1 == ioctl( p_vout->p_sys->i_tty,
 189                      VT_GETMODE, &p_vout->p_sys->vt_mode ) )
 190     {
 191         msg_Err( p_vout, "cannot get terminal mode (%s)", strerror(errno) );
 192         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 193         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 194         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 195         TextMode( p_vout->p_sys->i_tty );
 196         free( p_vout->p_sys );
 197         return VLC_EGENERIC;
 198     }
 199     memcpy( &vt_mode, &p_vout->p_sys->vt_mode, sizeof( vt_mode ) );
 200     vt_mode.mode   = VT_PROCESS;
 201     vt_mode.waitv  = 0;
 202     vt_mode.relsig = SIGUSR1;
 203     vt_mode.acqsig = SIGUSR2;
 204
 205     if( -1 == ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &vt_mode ) )
 206     {
 207         msg_Err( p_vout, "cannot set terminal mode (%s)", strerror(errno) );
 208         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 209         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 210         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 211         TextMode( p_vout->p_sys->i_tty );
 212         free( p_vout->p_sys );
 213         return VLC_EGENERIC;
 214     }
 215
 216     if( OpenDisplay( p_vout ) )
 217     {
 218         ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
 219         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 220         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 221         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 222         TextMode( p_vout->p_sys->i_tty );
 223         free( p_vout->p_sys );
 224         return VLC_EGENERIC;
 225     }
 226
 227     return VLC_SUCCESS;
 228 }
 229
 230 /*****************************************************************************
 231  * Init: initialize framebuffer video thread output method
 232  *****************************************************************************/
 233 static int Init( vout_thread_t *p_vout )
 234 {
 235     int i_index;
 236     picture_t *p_pic;
 237
 238     I_OUTPUTPICTURES = 0;
 239
 240     /* Initialize the output structure: RGB with square pixels, whatever
 241      * the input format is, since it's the only format we know */
 242     switch( p_vout->p_sys->var_info.bits_per_pixel )
 243     {
 244         case 8: /* FIXME: set the palette */
 245             p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
 246         case 15:
 247             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
 248         case 16:
 249             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
 250         case 24:
 251             p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
 252         case 32:
 253             p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
 254         default:
 255             msg_Err( p_vout, "unknown screen depth %i",
 256                      p_vout->p_sys->var_info.bits_per_pixel );
 257             return VLC_EGENERIC;
 258     }
 259
 260     /* Only useful for p_vout->p_sys->var_info.bits_per_pixel != 8 */
 261     p_vout->output.i_rmask = ( (1 << p_vout->p_sys->var_info.red.length) - 1 )
 262                      << p_vout->p_sys->var_info.red.offset;
 263     p_vout->output.i_gmask = ( (1 << p_vout->p_sys->var_info.green.length) - 1 )
 264                      << p_vout->p_sys->var_info.green.offset;
 265     p_vout->output.i_bmask = ( (1 << p_vout->p_sys->var_info.blue.length) - 1 )
 266                      << p_vout->p_sys->var_info.blue.offset;
 267
 268     p_vout->output.i_width = p_vout->p_sys->i_width;
 269     p_vout->output.i_height = p_vout->p_sys->i_height;
 270
 271     /* Assume we have square pixels */
 272     p_vout->output.i_aspect = (p_vout->p_sys->i_width
 273                                * VOUT_ASPECT_FACTOR) / p_vout->p_sys->i_height;
 274
 275     /* Clear the screen */
 276     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 277
 278     /* Try to initialize 1 direct buffer */
 279     p_pic = NULL;
 280
 281     /* Find an empty picture slot */
 282     for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 283     {
 284         if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 285         {
 286             p_pic = p_vout->p_picture + i_index;
 287             break;
 288         }
 289     }
 290
 291     /* Allocate the picture */
 292     if( p_pic == NULL )
 293     {
 294         return VLC_EGENERIC;
 295     }
 296
 297     /* We know the chroma, allocate a buffer which will be used
 298      * directly by the decoder */
 299     p_pic->p->p_pixels = p_vout->p_sys->p_video;
 300     p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
 301     p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
 302     p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
 303
 304     if( p_vout->p_sys->var_info.xres_virtual )
 305     {
 306         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
 307                              * p_vout->p_sys->i_bytes_per_pixel;
 308     }
 309     else
 310     {
 311         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
 312                              * p_vout->p_sys->i_bytes_per_pixel;
 313     }
 314
 315     p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
 316                                  * p_vout->p_sys->i_bytes_per_pixel;
 317
 318     p_pic->i_planes = 1;
 319
 320     p_pic->i_status = DESTROYED_PICTURE;
 321     p_pic->i_type   = DIRECT_PICTURE;
 322
 323     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 324
 325     I_OUTPUTPICTURES++;
 326
 327     return VLC_SUCCESS;
 328 }
 329
 330 /*****************************************************************************
 331  * End: terminate framebuffer video thread output method
 332  *****************************************************************************/
 333 static void End( vout_thread_t *p_vout )
 334 {
 335     /* Clear the screen */
 336     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 337 }
 338
 339 /*****************************************************************************
 340  * Destroy: destroy FB video thread output method
 341  *****************************************************************************
 342  * Terminate an output method created by Create
 343  *****************************************************************************/
 344 static void Destroy( vlc_object_t *p_this )
 345 {
 346     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 347
 348     CloseDisplay( p_vout );
 349
 350     /* Reset the terminal */
 351     ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
 352
 353     /* Remove signal handlers */
 354     sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 355     sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 356
 357     /* Reset the keyboard state */
 358     tcsetattr( 0, 0, &p_vout->p_sys->old_termios );
 359
 360     /* Return to text mode */
 361     TextMode( p_vout->p_sys->i_tty );
 362
 363     /* Destroy structure */
 364     free( p_vout->p_sys );
 365 }
 366
 367 /*****************************************************************************
 368  * Manage: handle FB events
 369  *****************************************************************************
 370  * This function should be called regularly by video output thread. It manages
 371  * console events. It returns a non null value on error.
 372  *****************************************************************************/
 373 static int Manage( vout_thread_t *p_vout )
 374 {
 375 #if 0
 376     uint8_t buf;
 377
 378     if ( read(0, &buf, 1) == 1)
 379     {
 380         switch( buf )
 381         {
 382         case 'q':
 383             vlc_object_kill( p_vout->p_libvlc );
 384             break;
 385
 386         default:
 387             break;
 388         }
 389     }
 390 #endif
 391
 392     /*
 393      * Size change
 394      */
 395     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 396     {
 397         msg_Dbg( p_vout, "reinitializing framebuffer screen" );
 398         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 399
 400         /* Destroy XImages to change their size */
 401         End( p_vout );
 402
 403         /* Recreate XImages. If SysInit failed, the thread can't go on. */
 404         if( Init( p_vout ) )
 405         {
 406             msg_Err( p_vout, "cannot reinit framebuffer screen" );
 407             return VLC_EGENERIC;
 408         }
 409
 410         /* Clear screen */
 411         memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 412
 413 #if 0
 414         /* Tell the video output thread that it will need to rebuild YUV
 415          * tables. This is needed since conversion buffer size may have changed */
 416         p_vout->i_changes |= VOUT_YUV_CHANGE;
 417 #endif
 418     }
 419
 420     return VLC_SUCCESS;
 421 }
 422
 423 /*****************************************************************************
 424  * Display: displays previously rendered output
 425  *****************************************************************************
 426  * This function send the currently rendered image to FB image, waits until
 427  * it is displayed and switch the two rendering buffers, preparing next frame.
 428  *****************************************************************************/
 429 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 430 {
 431 static int panned=0;
 432     /* swap the two Y offsets if the drivers supports panning */
 433     if( p_vout->p_sys->b_pan )
 434     {
 435         p_vout->p_sys->var_info.yoffset = 0;
 436         /*p_vout->p_sys->var_info.yoffset = p_vout->p_sys->var_info.yres; */
 437
 438         /* the X offset should be 0, but who knows ...
 439          * some other app might have played with the framebuffer */
 440         p_vout->p_sys->var_info.xoffset = 0;
 441
 442         if( panned < 0 )
 443         {
 444                 ioctl( p_vout->p_sys->i_fd,
 445                        FBIOPAN_DISPLAY, &p_vout->p_sys->var_info );
 446                 panned++;
 447         }
 448     }
 449 }
 450
 451 #if 0
 452 static void SetPalette( vout_thread_t *p_vout, uint16_t *red, uint16_t *green,
 453                                                uint16_t *blue, uint16_t *transp )
 454 {
 455     struct fb_cmap cmap = { 0, 256, red, green, blue, transp };
 456
 457     ioctl( p_vout->p_sys->i_fd, FBIOPUTCMAP, &cmap );
 458 }
 459 #endif
 460
 461 /* following functions are local */
 462
 463 /*****************************************************************************
 464  * OpenDisplay: initialize framebuffer
 465  *****************************************************************************/
 466 static int OpenDisplay( vout_thread_t *p_vout )
 467 {
 468     char *psz_device;                             /* framebuffer device path */
 469     struct fb_fix_screeninfo    fix_info;     /* framebuffer fix information */
 470
 471     /* Open framebuffer device */
 472     if( !(psz_device = config_GetPsz( p_vout, FB_DEV_VAR )) )
 473     {
 474         msg_Err( p_vout, "don't know which fb device to open" );
 475         return VLC_EGENERIC;
 476     }
 477
 478     p_vout->p_sys->i_fd = open( psz_device, O_RDWR);
 479
 480     if( p_vout->p_sys->i_fd == -1 )
 481     {
 482         msg_Err( p_vout, "cannot open %s (%s)", psz_device, strerror(errno) );
 483         free( psz_device );
 484         return VLC_EGENERIC;
 485     }
 486     free( psz_device );
 487
 488     /* Get framebuffer device information */
 489     if( ioctl( p_vout->p_sys->i_fd,
 490                FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 491     {
 492         msg_Err( p_vout, "cannot get fb info (%s)", strerror(errno) );
 493         close( p_vout->p_sys->i_fd );
 494         return VLC_EGENERIC;
 495     }
 496
 497     memcpy( &p_vout->p_sys->old_info, &p_vout->p_sys->var_info,
 498             sizeof( struct fb_var_screeninfo ) );
 499
 500     /* Set some attributes */
 501     p_vout->p_sys->var_info.activate = FB_ACTIVATE_NXTOPEN;
 502     p_vout->p_sys->var_info.xoffset =  0;
 503     p_vout->p_sys->var_info.yoffset =  0;
 504
 505     if( ioctl( p_vout->p_sys->i_fd,
 506                FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info ) )
 507     {
 508         msg_Err( p_vout, "cannot set fb info (%s)", strerror(errno) );
 509         close( p_vout->p_sys->i_fd );
 510         return VLC_EGENERIC;
 511     }
 512
 513     /* Get some information again, in the definitive configuration */
 514     if( ioctl( p_vout->p_sys->i_fd, FBIOGET_FSCREENINFO, &fix_info )
 515          || ioctl( p_vout->p_sys->i_fd,
 516                    FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 517     {
 518         msg_Err( p_vout, "cannot get additional fb info (%s)",
 519                           strerror(errno) );
 520
 521         /* Restore fb config */
 522         ioctl( p_vout->p_sys->i_fd,
 523                FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 524
 525         close( p_vout->p_sys->i_fd );
 526         return VLC_EGENERIC;
 527     }
 528
 529     /* FIXME: if the image is full-size, it gets cropped on the left
 530      * because of the xres / xres_virtual slight difference */
 531     msg_Dbg( p_vout, "%ix%i (virtual %ix%i)",
 532              p_vout->p_sys->var_info.xres, p_vout->p_sys->var_info.yres,
 533              p_vout->p_sys->var_info.xres_virtual,
 534              p_vout->p_sys->var_info.yres_virtual );
 535
 536     p_vout->p_sys->i_height = p_vout->p_sys->var_info.yres;
 537     p_vout->p_sys->i_width  = p_vout->p_sys->var_info.xres_virtual
 538                                ? p_vout->p_sys->var_info.xres_virtual
 539                                : p_vout->p_sys->var_info.xres;
 540
 541     p_vout->p_sys->p_palette = NULL;
 542     p_vout->p_sys->b_pan = ( fix_info.ypanstep || fix_info.ywrapstep );
 543
 544     switch( p_vout->p_sys->var_info.bits_per_pixel )
 545     {
 546     case 8:
 547         p_vout->p_sys->p_palette = malloc( 8 * 256 * sizeof( uint16_t ) );
 548         p_vout->p_sys->fb_cmap.start = 0;
 549         p_vout->p_sys->fb_cmap.len = 256;
 550         p_vout->p_sys->fb_cmap.red = p_vout->p_sys->p_palette;
 551         p_vout->p_sys->fb_cmap.green = p_vout->p_sys->p_palette + 256 * sizeof( uint16_t );
 552         p_vout->p_sys->fb_cmap.blue = p_vout->p_sys->p_palette + 2 * 256 * sizeof( uint16_t );
 553         p_vout->p_sys->fb_cmap.transp = p_vout->p_sys->p_palette + 3 * 256 * sizeof( uint16_t );
 554
 555         /* Save the colormap */
 556         ioctl( p_vout->p_sys->i_fd, FBIOGETCMAP, &p_vout->p_sys->fb_cmap );
 557
 558         p_vout->p_sys->i_bytes_per_pixel = 1;
 559         break;
 560
 561     case 15:
 562     case 16:
 563         p_vout->p_sys->i_bytes_per_pixel = 2;
 564         break;
 565
 566     case 24:
 567         p_vout->p_sys->i_bytes_per_pixel = 3;
 568         break;
 569
 570     case 32:
 571         p_vout->p_sys->i_bytes_per_pixel = 4;
 572         break;
 573
 574     default:
 575         msg_Err( p_vout, "screen depth %d is not supported",
 576                          p_vout->p_sys->var_info.bits_per_pixel );
 577
 578         /* Restore fb config */
 579         ioctl( p_vout->p_sys->i_fd,
 580                FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 581
 582         close( p_vout->p_sys->i_fd );
 583         return VLC_EGENERIC;
 584     }
 585
 586     p_vout->p_sys->i_page_size = p_vout->p_sys->i_width *
 587                 p_vout->p_sys->i_height * p_vout->p_sys->i_bytes_per_pixel;
 588
 589     /* Map a framebuffer at the beginning */
 590     p_vout->p_sys->p_video = mmap( 0, p_vout->p_sys->i_page_size,
 591                                    PROT_READ | PROT_WRITE, MAP_SHARED,
 592                                    p_vout->p_sys->i_fd, 0 );
 593
 594     if( p_vout->p_sys->p_video == ((void*)-1) )
 595     {
 596         msg_Err( p_vout, "cannot map video memory (%s)", strerror(errno) );
 597
 598         if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
 599         {
 600             free( p_vout->p_sys->p_palette );
 601         }
 602
 603         /* Restore fb config */
 604         ioctl( p_vout->p_sys->i_fd,
 605                FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 606
 607         close( p_vout->p_sys->i_fd );
 608         return VLC_EGENERIC;
 609     }
 610
 611     msg_Dbg( p_vout, "framebuffer type=%d, visual=%d, ypanstep=%d, "
 612              "ywrap=%d, accel=%d", fix_info.type, fix_info.visual,
 613              fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel );
 614     return VLC_SUCCESS;
 615 }
 616
 617 /*****************************************************************************
 618  * CloseDisplay: terminate FB video thread output method
 619  *****************************************************************************/
 620 static void CloseDisplay( vout_thread_t *p_vout )
 621 {
 622     /* Clear display */
 623     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 624
 625     /* Restore palette */
 626     if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
 627     {
 628         ioctl( p_vout->p_sys->i_fd,
 629                FBIOPUTCMAP, &p_vout->p_sys->fb_cmap );
 630         free( p_vout->p_sys->p_palette );
 631     }
 632
 633     /* Restore fb config */
 634     ioctl( p_vout->p_sys->i_fd,
 635            FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 636
 637     /* Close fb */
 638     close( p_vout->p_sys->i_fd );
 639 }
 640
 641 /*****************************************************************************
 642  * SwitchDisplay: VT change signal handler
 643  *****************************************************************************
 644  * This function activates or deactivates the output of the thread. It is
 645  * called by the VT driver, on terminal change.
 646  *****************************************************************************/
 647 static void SwitchDisplay(int i_signal)
 648 {
 649 #if 0
 650     vout_thread_t *p_vout;
 651
 652     vlc_mutex_lock( &p_vout_bank->lock );
 653
 654     /* XXX: only test the first video output */
 655     if( p_vout_bank->i_count )
 656     {
 657         p_vout = p_vout_bank->pp_vout[0];
 658
 659         switch( i_signal )
 660         {
 661         case SIGUSR1:                                /* vt has been released */
 662             p_vout->b_active = 0;
 663             ioctl( p_vout->p_sys->i_tty, VT_RELDISP, 1 );
 664             break;
 665         case SIGUSR2:                                /* vt has been acquired */
 666             p_vout->b_active = 1;
 667             ioctl( p_vout->p_sys->i_tty, VT_RELDISP, VT_ACTIVATE );
 668             /* handle blanking */
 669             vlc_mutex_lock( &p_vout->change_lock );
 670             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 671             vlc_mutex_unlock( &p_vout->change_lock );
 672             break;
 673         }
 674     }
 675
 676     vlc_mutex_unlock( &p_vout_bank->lock );
 677 #endif
 678 }
 679
 680 /*****************************************************************************
 681  * TextMode and GfxMode : switch tty to text/graphic mode
 682  *****************************************************************************
 683  * These functions toggle the tty mode.
 684  *****************************************************************************/
 685 static void TextMode( int i_tty )
 686 {
 687     /* return to text mode */
 688     if( -1 == ioctl(i_tty, KDSETMODE, KD_TEXT) )
 689     {
 690         /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_TEXT" );*/
 691     }
 692 }
 693
 694 static void GfxMode( int i_tty )
 695 {
 696     /* switch to graphic mode */
 697     if( -1 == ioctl(i_tty, KDSETMODE, KD_GRAPHICS) )
 698     {
 699         /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_GRAPHICS" );*/
 700     }
 701 }