git.sesse.net Git - vlc/blob - plugins/fb/vout_fb.c

   1 /*****************************************************************************
   2  * vout_fb.c: framebuffer video output display method
   3  *****************************************************************************
   4  * Copyright (C) 1998, 1999, 2000, 2001 VideoLAN
   5  *
   6  * Authors: Samuel Hocevar <sam@zoy.org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26 #include "defs.h"
  27
  28 #include <errno.h>                                                 /* ENOMEM */
  29 #include <signal.h>                                      /* SIGUSR1, SIGUSR2 */
  30 #include <stdlib.h>                                                /* free() */
  31 #include <string.h>                                            /* strerror() */
  32 #include <fcntl.h>                                                 /* open() */
  33 #include <unistd.h>                                               /* close() */
  34
  35 #include <termios.h>                                       /* struct termios */
  36 #include <sys/ioctl.h>
  37 #include <sys/mman.h>                                              /* mmap() */
  38
  39 #include <linux/fb.h>
  40 #include <linux/vt.h>                                                /* VT_* */
  41 #include <linux/kd.h>                                                 /* KD* */
  42
  43 #include "config.h"
  44 #include "common.h"
  45 #include "threads.h"
  46 #include "mtime.h"
  47 #include "tests.h"
  48 #include "modules.h"
  49
  50 #include "video.h"
  51 #include "video_output.h"
  52
  53 #include "intf_msg.h"
  54 #include "main.h"
  55
  56 /*****************************************************************************
  57  * vout_sys_t: video output framebuffer method descriptor
  58  *****************************************************************************
  59  * This structure is part of the video output thread descriptor.
  60  * It describes the FB specific properties of an output thread.
  61  *****************************************************************************/
  62 typedef struct vout_sys_s
  63 {
  64     /* System informations */
  65     int                 i_tty_dev;                      /* tty device handle */
  66     struct termios      old_termios;
  67
  68     /* Original configuration informations */
  69     struct sigaction            sig_usr1;           /* USR1 previous handler */
  70     struct sigaction            sig_usr2;           /* USR2 previous handler */
  71     struct vt_mode              vt_mode;                 /* previous VT mode */
  72
  73     /* Framebuffer information */
  74     int                         i_fb_dev;                   /* device handle */
  75     struct fb_var_screeninfo    old_info;      /* original mode informations */
  76     struct fb_var_screeninfo    var_info;       /* current mode informations */
  77     boolean_t                   b_pan;     /* does device supports panning ? */
  78     struct fb_cmap              fb_cmap;                /* original colormap */
  79     u16                         *fb_palette;             /* original palette */
  80
  81     /* Video memory */
  82     byte_t *                    p_video;                      /* base adress */
  83     size_t                      i_page_size;                    /* page size */
  84
  85 } vout_sys_t;
  86
  87 /*****************************************************************************
  88  * Local prototypes.
  89  *****************************************************************************/
  90 static int  vout_Probe     ( probedata_t *p_data );
  91 static int  vout_Create    ( struct vout_thread_s * );
  92 static int  vout_Init      ( struct vout_thread_s * );
  93 static void vout_End       ( struct vout_thread_s * );
  94 static void vout_Destroy   ( struct vout_thread_s * );
  95 static int  vout_Manage    ( struct vout_thread_s * );
  96 static void vout_Display   ( struct vout_thread_s * );
  97 static void vout_SetPalette( p_vout_thread_t p_vout, u16 *red, u16 *green,
  98                              u16 *blue, u16 *transp );
  99
 100 static int  FBOpenDisplay  ( struct vout_thread_s * );
 101 static void FBCloseDisplay ( struct vout_thread_s * );
 102 static void FBSwitchDisplay( int i_signal );
 103 static void FBTextMode     ( int i_tty_dev );
 104 static void FBGfxMode      ( int i_tty_dev );
 105
 106 /*****************************************************************************
 107  * Functions exported as capabilities. They are declared as static so that
 108  * we don't pollute the namespace too much.
 109  *****************************************************************************/
 110 void vout_getfunctions( function_list_t * p_function_list )
 111 {
 112     p_function_list->pf_probe = vout_Probe;
 113     p_function_list->functions.vout.pf_create     = vout_Create;
 114     p_function_list->functions.vout.pf_init       = vout_Init;
 115     p_function_list->functions.vout.pf_end        = vout_End;
 116     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 117     p_function_list->functions.vout.pf_manage     = vout_Manage;
 118     p_function_list->functions.vout.pf_display    = vout_Display;
 119     p_function_list->functions.vout.pf_setpalette = vout_SetPalette;
 120 }
 121
 122 /*****************************************************************************
 123  * vout_Probe: probe the video driver and return a score
 124  *****************************************************************************
 125  * This function tries to open the framebuffer and returns a score to the
 126  * plugin manager so that it can select the best plugin.
 127  *****************************************************************************/
 128 static int vout_Probe( probedata_t *p_data )
 129 {
 130     int i_fd;
 131
 132     if( TestMethod( VOUT_METHOD_VAR, "fb" ) )
 133     {
 134         return( 999 );
 135     }
 136
 137     i_fd = open( main_GetPszVariable( VOUT_FB_DEV_VAR,
 138                                       VOUT_FB_DEV_DEFAULT ), O_RDWR );
 139     if( i_fd == -1 )
 140     {
 141         return( 0 );
 142     }
 143     close( i_fd );
 144
 145     return( 30 );
 146 }
 147
 148 /*****************************************************************************
 149  * vout_Create: allocates FB video thread output method
 150  *****************************************************************************
 151  * This function allocates and initializes a FB vout method.
 152  *****************************************************************************/
 153 static int vout_Create( vout_thread_t *p_vout )
 154 {
 155     struct sigaction    sig_tty;                 /* sigaction for tty change */
 156     struct vt_mode      vt_mode;                          /* vt current mode */
 157     struct termios      new_termios;
 158
 159     /* Allocate instance and initialize some members */
 160     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 161     if( p_vout->p_sys == NULL )
 162     {
 163         return( 1 );
 164     };
 165
 166     /* Set tty and fb devices */
 167     p_vout->p_sys->i_tty_dev = 0;       /* 0 == /dev/tty0 == current console */
 168
 169     FBGfxMode( p_vout->p_sys->i_tty_dev );
 170
 171     /* Set keyboard settings */
 172     if (tcgetattr(0, &p_vout->p_sys->old_termios) == -1)
 173     {
 174         intf_ErrMsg( "intf error: tcgetattr" );
 175     }
 176
 177     if (tcgetattr(0, &new_termios) == -1)
 178     {
 179         intf_ErrMsg( "intf error: tcgetattr" );
 180     }
 181
 182  /* new_termios.c_lflag &= ~ (ICANON | ISIG);
 183     new_termios.c_lflag |= (ECHO | ECHOCTL); */
 184     new_termios.c_lflag &= ~ (ICANON);
 185     new_termios.c_lflag &= ~(ECHO | ECHOCTL);
 186     new_termios.c_iflag = 0;
 187     new_termios.c_cc[VMIN] = 1;
 188     new_termios.c_cc[VTIME] = 0;
 189
 190     if (tcsetattr(0, TCSAFLUSH, &new_termios) == -1)
 191     {
 192         intf_ErrMsg( "intf error: tcsetattr" );
 193     }
 194
 195     ioctl(p_vout->p_sys->i_tty_dev, VT_RELDISP, VT_ACKACQ);
 196
 197     /* Set-up tty signal handler to be aware of tty changes */
 198     memset( &sig_tty, 0, sizeof( sig_tty ) );
 199     sig_tty.sa_handler = FBSwitchDisplay;
 200     sigemptyset( &sig_tty.sa_mask );
 201     if( sigaction( SIGUSR1, &sig_tty, &p_vout->p_sys->sig_usr1 ) ||
 202         sigaction( SIGUSR2, &sig_tty, &p_vout->p_sys->sig_usr2 ) )
 203     {
 204         intf_ErrMsg( "intf error: can't set up signal handler (%s)",
 205                      strerror(errno) );
 206         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 207         FBTextMode( p_vout->p_sys->i_tty_dev );
 208         free( p_vout->p_sys );
 209         return( 1 );
 210     }
 211
 212     /* Set-up tty according to new signal handler */
 213     if( ioctl(p_vout->p_sys->i_tty_dev, VT_GETMODE, &p_vout->p_sys->vt_mode)
 214         == -1 )
 215     {
 216         intf_ErrMsg( "intf error: cant get terminal mode (%s)",
 217                      strerror(errno) );
 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         FBTextMode( p_vout->p_sys->i_tty_dev );
 222         free( p_vout->p_sys );
 223         return( 1 );
 224     }
 225     memcpy( &vt_mode, &p_vout->p_sys->vt_mode, sizeof( vt_mode ) );
 226     vt_mode.mode   = VT_PROCESS;
 227     vt_mode.waitv  = 0;
 228     vt_mode.relsig = SIGUSR1;
 229     vt_mode.acqsig = SIGUSR2;
 230
 231     if( ioctl(p_vout->p_sys->i_tty_dev, VT_SETMODE, &vt_mode) == -1 )
 232     {
 233         intf_ErrMsg( "intf error: can't set terminal mode (%s)",
 234                      strerror(errno) );
 235         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 236         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 237         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 238         FBTextMode( p_vout->p_sys->i_tty_dev );
 239         free( p_vout->p_sys );
 240         return( 1 );
 241     }
 242
 243     if( FBOpenDisplay( p_vout ) )
 244     {
 245         ioctl(p_vout->p_sys->i_tty_dev, VT_SETMODE, &p_vout->p_sys->vt_mode);
 246         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 247         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 248         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 249         FBTextMode( p_vout->p_sys->i_tty_dev );
 250         free( p_vout->p_sys );
 251         return( 1 );
 252     }
 253
 254     return( 0 );
 255 }
 256
 257 /*****************************************************************************
 258  * vout_Init: initialize framebuffer video thread output method
 259  *****************************************************************************/
 260 static int vout_Init( vout_thread_t *p_vout )
 261 {
 262     /* Clear the screen */
 263     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size * 2 );
 264
 265     return( 0 );
 266 }
 267
 268 /*****************************************************************************
 269  * vout_End: terminate framebuffer video thread output method
 270  *****************************************************************************/
 271 static void vout_End( vout_thread_t *p_vout )
 272 {
 273     /* Clear the screen */
 274     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size * 2 );
 275 }
 276
 277 /*****************************************************************************
 278  * vout_Destroy: destroy FB video thread output method
 279  *****************************************************************************
 280  * Terminate an output method created by vout_CreateOutputMethod
 281  *****************************************************************************/
 282 static void vout_Destroy( vout_thread_t *p_vout )
 283 {
 284     FBCloseDisplay( p_vout );
 285
 286     /* Reset the terminal */
 287     ioctl(p_vout->p_sys->i_tty_dev, VT_SETMODE, &p_vout->p_sys->vt_mode);
 288
 289     /* Remove signal handlers */
 290     sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 291     sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 292
 293     /* Reset the keyboard state */
 294     tcsetattr( 0, 0, &p_vout->p_sys->old_termios );
 295
 296     /* Return to text mode */
 297     FBTextMode( p_vout->p_sys->i_tty_dev );
 298
 299     /* Destroy structure */
 300     free( p_vout->p_sys );
 301 }
 302
 303 /*****************************************************************************
 304  * vout_Manage: handle FB events
 305  *****************************************************************************
 306  * This function should be called regularly by video output thread. It manages
 307  * console events. It returns a non null value on error.
 308  *****************************************************************************/
 309 static int vout_Manage( vout_thread_t *p_vout )
 310 {
 311 #if 0
 312     u8 buf;
 313
 314     if ( read(0, &buf, 1) == 1)
 315     {
 316         switch( buf )
 317         {
 318         case 'q':
 319             p_main->p_intf->b_die = 1;
 320             break;
 321
 322         default:
 323             break;
 324         }
 325     }
 326 #endif
 327
 328     /*
 329      * Size change
 330      */
 331     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 332     {
 333         intf_WarnMsg( 1, "vout: reinitializing framebuffer screen" );
 334         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 335
 336         /* Destroy XImages to change their size */
 337         vout_End( p_vout );
 338
 339         /* Recreate XImages. If SysInit failed, the thread can't go on. */
 340         if( vout_Init( p_vout ) )
 341         {
 342             intf_ErrMsg("error: cannot reinit framebuffer screen" );
 343             return( 1 );
 344         }
 345
 346         /* Clear screen */
 347         memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size * 2 );
 348
 349 #if 1
 350         /* Tell the video output thread that it will need to rebuild YUV
 351          * tables. This is needed since conversion buffer size may have changed */
 352         p_vout->i_changes |= VOUT_YUV_CHANGE;
 353 #endif
 354     }
 355
 356     return 0;
 357 }
 358
 359 /*****************************************************************************
 360  * vout_Display: displays previously rendered output
 361  *****************************************************************************
 362  * This function send the currently rendered image to FB image, waits until
 363  * it is displayed and switch the two rendering buffers, preparing next frame.
 364  *****************************************************************************/
 365 static void vout_Display( vout_thread_t *p_vout )
 366 {
 367     /* swap the two Y offsets if the drivers supports panning */
 368     if( p_vout->p_sys->b_pan )
 369     {
 370         p_vout->p_sys->var_info.yoffset =
 371             p_vout->i_buffer_index ? p_vout->p_sys->var_info.yres : 0;
 372
 373         /* the X offset should be 0, but who knows ...
 374          * some other app might have played with the framebuffer */
 375         p_vout->p_sys->var_info.xoffset = 0;
 376
 377         ioctl( p_vout->p_sys->i_fb_dev,
 378                FBIOPAN_DISPLAY, &p_vout->p_sys->var_info );
 379     }
 380 }
 381
 382 /*****************************************************************************
 383  * vout_SetPalette: sets an 8 bpp palette
 384  *****************************************************************************
 385  * This function sets the palette given as an argument. It does not return
 386  * anything, but could later send information on which colors it was unable
 387  * to set.
 388  *****************************************************************************/
 389 static void vout_SetPalette( p_vout_thread_t p_vout,
 390                              u16 *red, u16 *green, u16 *blue, u16 *transp )
 391 {
 392     struct fb_cmap cmap = { 0, 256, red, green, blue, transp };
 393
 394     ioctl( p_vout->p_sys->i_fb_dev, FBIOPUTCMAP, &cmap );
 395 }
 396
 397 /* following functions are local */
 398
 399 /*****************************************************************************
 400  * FBOpenDisplay: initialize framebuffer
 401  *****************************************************************************/
 402 static int FBOpenDisplay( vout_thread_t *p_vout )
 403 {
 404     char *psz_device;                             /* framebuffer device path */
 405     struct fb_fix_screeninfo    fix_info;     /* framebuffer fix information */
 406
 407     /* Open framebuffer device */
 408     psz_device = main_GetPszVariable( VOUT_FB_DEV_VAR, VOUT_FB_DEV_DEFAULT );
 409     p_vout->p_sys->i_fb_dev = open( psz_device, O_RDWR);
 410     if( p_vout->p_sys->i_fb_dev == -1 )
 411     {
 412         intf_ErrMsg("vout error: can't open %s (%s)", psz_device, strerror(errno) );
 413         return( 1 );
 414     }
 415
 416     /* Get framebuffer device informations */
 417     if( ioctl( p_vout->p_sys->i_fb_dev, FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 418     {
 419         intf_ErrMsg("vout error: can't get fb info (%s)", strerror(errno) );
 420         close( p_vout->p_sys->i_fb_dev );
 421         return( 1 );
 422     }
 423
 424     if( ioctl( p_vout->p_sys->i_fb_dev, FBIOGET_VSCREENINFO, &p_vout->p_sys->old_info ) )
 425     {
 426         intf_ErrMsg("vout error: can't get 2nd fb info (%s)", strerror(errno) );
 427         close( p_vout->p_sys->i_fb_dev );
 428         return( 1 );
 429     }
 430
 431     /* Set some attributes */
 432     p_vout->p_sys->var_info.activate = FB_ACTIVATE_NXTOPEN;
 433     p_vout->p_sys->var_info.xoffset =  0;
 434     p_vout->p_sys->var_info.yoffset =  0;
 435
 436     if( ioctl( p_vout->p_sys->i_fb_dev, FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info ) )
 437     {
 438         intf_ErrMsg(" vout error: can't set fb info (%s)", strerror(errno) );
 439         close( p_vout->p_sys->i_fb_dev );
 440         return( 1 );
 441     }
 442
 443     /* Get some informations again, in the definitive configuration */
 444     if( ioctl( p_vout->p_sys->i_fb_dev, FBIOGET_FSCREENINFO, &fix_info ) ||
 445         ioctl( p_vout->p_sys->i_fb_dev, FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 446     {
 447         intf_ErrMsg(" vout error: can't get additional fb info (%s)", strerror(errno) );
 448
 449         /* Restore fb config */
 450         ioctl( p_vout->p_sys->i_fb_dev, FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info );
 451
 452         close( p_vout->p_sys->i_fb_dev );
 453         return( 1 );
 454     }
 455
 456     /* FIXME: if the image is full-size, it gets cropped on the left
 457      * because of the xres / xres_virtual slight difference */
 458     intf_WarnMsg( 1, "vout: %ix%i (virtual %ix%i)",
 459                   p_vout->p_sys->var_info.xres,
 460                   p_vout->p_sys->var_info.yres,
 461                   p_vout->p_sys->var_info.xres_virtual,
 462                   p_vout->p_sys->var_info.yres_virtual );
 463
 464     p_vout->i_height = p_vout->p_sys->var_info.yres;
 465     p_vout->i_width  = p_vout->p_sys->var_info.xres_virtual ?
 466                            p_vout->p_sys->var_info.xres_virtual
 467                            : p_vout->p_sys->var_info.xres;
 468
 469     p_vout->i_screen_depth = p_vout->p_sys->var_info.bits_per_pixel;
 470
 471     p_vout->p_sys->fb_palette = NULL;
 472     p_vout->p_sys->b_pan = ( fix_info.ypanstep || fix_info.ywrapstep );
 473
 474     switch( p_vout->i_screen_depth )
 475     {
 476     case 8:                                                         /* 8 bpp */
 477         p_vout->p_sys->fb_palette = malloc( 8 * 256 * sizeof( u16 ) );
 478         p_vout->p_sys->fb_cmap.start = 0;
 479         p_vout->p_sys->fb_cmap.len = 256;
 480         p_vout->p_sys->fb_cmap.red = p_vout->p_sys->fb_palette;
 481         p_vout->p_sys->fb_cmap.green = p_vout->p_sys->fb_palette + 256 * sizeof( u16 );
 482         p_vout->p_sys->fb_cmap.blue = p_vout->p_sys->fb_palette + 2 * 256 * sizeof( u16 );
 483         p_vout->p_sys->fb_cmap.transp = p_vout->p_sys->fb_palette + 3 * 256 * sizeof( u16 );
 484
 485         /* Save the colormap */
 486         ioctl( p_vout->p_sys->i_fb_dev, FBIOGETCMAP, &p_vout->p_sys->fb_cmap );
 487
 488         p_vout->i_bytes_per_pixel = 1;
 489         p_vout->i_bytes_per_line = p_vout->i_width;
 490         break;
 491
 492     case 15:                      /* 15 bpp (16bpp with a missing green bit) */
 493     case 16:                                        /* 16 bpp (65536 colors) */
 494         p_vout->i_bytes_per_pixel = 2;
 495         p_vout->i_bytes_per_line = p_vout->i_width * 2;
 496         break;
 497
 498     case 24:                                  /* 24 bpp (millions of colors) */
 499         p_vout->i_bytes_per_pixel = 3;
 500         p_vout->i_bytes_per_line = p_vout->i_width * 3;
 501         break;
 502
 503     case 32:                                  /* 32 bpp (millions of colors) */
 504         p_vout->i_bytes_per_pixel = 4;
 505         p_vout->i_bytes_per_line = p_vout->i_width * 4;
 506         break;
 507
 508     default:                                     /* unsupported screen depth */
 509         intf_ErrMsg( "vout error: screen depth %d is not supported",
 510                      p_vout->i_screen_depth);
 511
 512         /* Restore fb config */
 513         ioctl( p_vout->p_sys->i_fb_dev, FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info );
 514
 515         close( p_vout->p_sys->i_fb_dev );
 516         return( 1 );
 517         break;
 518     }
 519
 520     switch( p_vout->i_screen_depth )
 521     {
 522     case 15:
 523     case 16:
 524     case 24:
 525     case 32:
 526         p_vout->i_red_mask =    ( (1 << p_vout->p_sys->var_info.red.length) - 1 )
 527                                     << p_vout->p_sys->var_info.red.offset;
 528         p_vout->i_green_mask =    ( (1 << p_vout->p_sys->var_info.green.length) - 1 )
 529                                     << p_vout->p_sys->var_info.green.offset;
 530         p_vout->i_blue_mask =    ( (1 << p_vout->p_sys->var_info.blue.length) - 1 )
 531                                     << p_vout->p_sys->var_info.blue.offset;
 532     }
 533
 534     p_vout->p_sys->i_page_size = p_vout->i_width *
 535                 p_vout->i_height * p_vout->i_bytes_per_pixel;
 536
 537     /* Map two framebuffers a the very beginning of the fb */
 538     p_vout->p_sys->p_video = mmap( 0, p_vout->p_sys->i_page_size * 2,
 539                                    PROT_READ | PROT_WRITE, MAP_SHARED,
 540                                    p_vout->p_sys->i_fb_dev, 0 );
 541
 542     if( (int)p_vout->p_sys->p_video == -1 ) /* according to man, it is -1.
 543                                                What about NULL ? */
 544     {
 545         intf_ErrMsg("vout error: can't map video memory (%s)", strerror(errno) );
 546         /* FIXME: restore fb config ?? */
 547         if( p_vout->i_screen_depth == 8 )
 548         {
 549             free( p_vout->p_sys->fb_palette );
 550         }
 551
 552         /* Restore fb config */
 553         ioctl( p_vout->p_sys->i_fb_dev, FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info );
 554
 555         close( p_vout->p_sys->i_fb_dev );
 556         return( 1 );
 557     }
 558
 559     /* Set and initialize buffers */
 560     if( p_vout->p_sys->b_pan )
 561     {
 562         vout_SetBuffers( p_vout, p_vout->p_sys->p_video,
 563                                  p_vout->p_sys->p_video
 564                                   + p_vout->p_sys->i_page_size );
 565     }
 566     else
 567     {
 568         vout_SetBuffers( p_vout, p_vout->p_sys->p_video,
 569                                  p_vout->p_sys->p_video );
 570     }
 571
 572     intf_WarnMsg( 1, "framebuffer type=%d, visual=%d, ypanstep=%d, ywrap=%d, accel=%d",
 573                   fix_info.type, fix_info.visual, fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel );
 574     return( 0 );
 575 }
 576
 577 /*****************************************************************************
 578  * FBCloseDisplay: terminate FB video thread output method
 579  *****************************************************************************/
 580 static void FBCloseDisplay( vout_thread_t *p_vout )
 581 {
 582     /* Clear display */
 583     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size * 2 );
 584
 585     /* Restore palette */
 586     if( p_vout->i_screen_depth == 8 );
 587     {
 588         ioctl( p_vout->p_sys->i_fb_dev, FBIOPUTCMAP, &p_vout->p_sys->fb_cmap );
 589         free( p_vout->p_sys->fb_palette );
 590     }
 591
 592     /* Restore fb config */
 593     ioctl( p_vout->p_sys->i_fb_dev, FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info );
 594
 595     /* Close fb */
 596     close( p_vout->p_sys->i_fb_dev );
 597 }
 598
 599 /*****************************************************************************
 600  * FBSwitchDisplay: VT change signal handler
 601  *****************************************************************************
 602  * This function activates or deactivates the output of the thread. It is
 603  * called by the VT driver, on terminal change.
 604  *****************************************************************************/
 605 static void FBSwitchDisplay(int i_signal)
 606 {
 607     if( p_main->p_vout != NULL )
 608     {
 609         switch( i_signal )
 610         {
 611         case SIGUSR1:                                /* vt has been released */
 612             p_main->p_vout->b_active = 0;
 613             ioctl( ((vout_sys_t *)p_main->p_vout->p_sys)->i_tty_dev,
 614                    VT_RELDISP, 1 );
 615             break;
 616         case SIGUSR2:                                /* vt has been acquired */
 617             p_main->p_vout->b_active = 1;
 618             ioctl( ((vout_sys_t *)p_main->p_vout->p_sys)->i_tty_dev,
 619                    VT_RELDISP, VT_ACTIVATE );
 620             /* handle blanking */
 621             vlc_mutex_lock( &p_main->p_vout->change_lock );
 622             p_main->p_vout->i_changes |= VOUT_SIZE_CHANGE;
 623             vlc_mutex_unlock( &p_main->p_vout->change_lock );
 624             break;
 625         }
 626     }
 627 }
 628
 629 /*****************************************************************************
 630  * FBTextMode and FBGfxMode : switch tty to text/graphic mode
 631  *****************************************************************************
 632  * These functions toggle the tty mode.
 633  *****************************************************************************/
 634 static void FBTextMode( int i_tty_dev )
 635 {
 636     /* return to text mode */
 637     if (-1 == ioctl(i_tty_dev, KDSETMODE, KD_TEXT))
 638     {
 639         intf_ErrMsg( "intf error: failed ioctl KDSETMODE KD_TEXT" );
 640     }
 641 }
 642
 643 static void FBGfxMode( int i_tty_dev )
 644 {
 645     /* switch to graphic mode */
 646     if (-1 == ioctl(i_tty_dev, KDSETMODE, KD_GRAPHICS))
 647     {
 648         intf_ErrMsg( "intf error: failed ioctl KDSETMODE KD_GRAPHICS" );
 649     }
 650 }
 651