1 /*****************************************************************************
2 * fb.c : framebuffer plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001 the VideoLAN team
7 * Authors: Samuel Hocevar <sam@zoy.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
33 #include <errno.h> /* ENOMEM */
34 #include <signal.h> /* SIGUSR1, SIGUSR2 */
35 #include <fcntl.h> /* open() */
36 #include <unistd.h> /* close() */
38 #include <termios.h> /* struct termios */
39 #include <sys/ioctl.h>
40 #include <sys/mman.h> /* mmap() */
43 #include <linux/vt.h> /* VT_* */
44 #include <linux/kd.h> /* KD* */
46 #include <vlc_common.h>
47 #include <vlc_plugin.h>
49 #include <vlc_interface.h>
51 /*****************************************************************************
53 *****************************************************************************/
54 static int Create ( vlc_object_t * );
55 static void Destroy ( vlc_object_t * );
57 static int Init ( vout_thread_t * );
58 static void End ( vout_thread_t * );
59 static int Manage ( vout_thread_t * );
60 static void Display ( vout_thread_t *, picture_t * );
61 static int Control ( vout_thread_t *, int, va_list );
63 static int NewPicture ( vout_thread_t *, picture_t * );
64 static void FreePicture ( vout_thread_t *, picture_t * );
66 static int OpenDisplay ( vout_thread_t * );
67 static void CloseDisplay ( vout_thread_t * );
68 static void SwitchDisplay ( int i_signal );
69 static void TextMode ( int i_tty );
70 static void GfxMode ( int i_tty );
72 #define MAX_DIRECTBUFFERS 1
74 /*****************************************************************************
76 *****************************************************************************/
77 #define FB_DEV_VAR "fbdev"
79 #define DEVICE_TEXT N_("Framebuffer device")
80 #define DEVICE_LONGTEXT N_( \
81 "Framebuffer device to use for rendering (usually /dev/fb0).")
83 #define TTY_TEXT N_("Run fb on current tty.")
84 #define TTY_LONGTEXT N_( \
85 "Run framebuffer on current TTY device (default enabled). " \
86 "(disable tty handling with caution)" )
88 #define CHROMA_TEXT N_("Chroma used.")
89 #define CHROMA_LONGTEXT N_( \
90 "Force use of a specific chroma for output. Default is I420." )
92 #define ASPECT_RATIO_TEXT N_("Video aspect ratio")
93 #define ASPECT_RATIO_LONGTEXT N_( \
94 "Aspect ratio of the video image (4:3, 16:9). Default is square pixels." )
96 #define FB_MODE_TEXT N_("Framebuffer resolution to use.")
97 #define FB_MODE_LONGTEXT N_( \
98 "Select the resolution for the framebuffer. Currently it supports " \
99 "the values 0=QCIF 1=CIF 2=NTSC 3=PAL, 4=auto (default 4=auto)" )
101 #define HW_ACCEL_TEXT N_("Framebuffer uses hw acceleration.")
102 #define HW_ACCEL_LONGTEXT N_( \
103 "If your framebuffer supports hardware acceleration or does double buffering " \
104 "in hardware then you must disable this option. It then does double buffering " \
108 set_shortname( "Framebuffer" )
109 set_category( CAT_VIDEO )
110 set_subcategory( SUBCAT_VIDEO_VOUT )
111 add_file( FB_DEV_VAR, "/dev/fb0", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
113 add_bool( "fb-tty", 1, NULL, TTY_TEXT, TTY_LONGTEXT, true )
114 add_string( "fb-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
116 add_string( "fb-aspect-ratio", NULL, NULL, ASPECT_RATIO_TEXT,
117 ASPECT_RATIO_LONGTEXT, true )
118 add_integer( "fb-mode", 4, NULL, FB_MODE_TEXT, FB_MODE_LONGTEXT,
120 add_bool( "fb-hw-accel", true, NULL, HW_ACCEL_TEXT, HW_ACCEL_LONGTEXT,
122 set_description( N_("GNU/Linux framebuffer video output") )
123 set_capability( "video output", 30 )
124 set_callbacks( Create, Destroy )
127 /*****************************************************************************
128 * vout_sys_t: video output framebuffer method descriptor
129 *****************************************************************************
130 * This structure is part of the video output thread descriptor.
131 * It describes the FB specific properties of an output thread.
132 *****************************************************************************/
135 /* System information */
136 int i_tty; /* tty device handle */
138 struct termios old_termios;
140 /* Original configuration information */
141 struct sigaction sig_usr1; /* USR1 previous handler */
142 struct sigaction sig_usr2; /* USR2 previous handler */
143 struct vt_mode vt_mode; /* previous VT mode */
145 /* Framebuffer information */
146 int i_fd; /* device handle */
147 struct fb_var_screeninfo old_info; /* original mode information */
148 struct fb_var_screeninfo var_info; /* current mode information */
149 bool b_pan; /* does device supports panning ? */
150 struct fb_cmap fb_cmap; /* original colormap */
151 uint16_t *p_palette; /* original palette */
152 bool b_hw_accel; /* has hardware support */
154 /* Video information */
158 int i_bytes_per_pixel;
159 bool b_auto; /* Automatically adjust video size to fb size */
160 vlc_fourcc_t i_chroma;
163 uint8_t *p_video; /* base adress */
164 size_t i_page_size; /* page size */
169 uint8_t * p_data; /* base adress */
172 /*****************************************************************************
173 * Create: allocates FB video thread output method
174 *****************************************************************************
175 * This function allocates and initializes a FB vout method.
176 *****************************************************************************/
177 static int Create( vlc_object_t *p_this )
179 vout_thread_t *p_vout = (vout_thread_t *)p_this;
184 struct sigaction sig_tty; /* sigaction for tty change */
185 struct vt_mode vt_mode; /* vt current mode */
186 struct termios new_termios;
188 /* Allocate instance and initialize some members */
189 p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
190 if( p_vout->p_sys == NULL )
192 memset( p_sys, 0, sizeof(vout_sys_t) );
194 p_vout->pf_init = Init;
195 p_vout->pf_end = End;
196 p_vout->pf_manage = Manage;
197 p_vout->pf_render = NULL;
198 p_vout->pf_display = Display;
199 p_vout->pf_control = Control;
201 /* Does the framebuffer uses hw acceleration? */
202 p_sys->b_hw_accel = var_CreateGetBool( p_vout, "fb-hw-accel" );
204 /* Set tty and fb devices */
205 p_sys->i_tty = 0; /* 0 == /dev/tty0 == current console */
206 p_sys->b_tty = var_CreateGetBool( p_vout, "fb-tty" );
208 #if defined(HAVE_ISATTY)
209 /* Check that stdin is a TTY */
210 if( p_sys->b_tty && !isatty( 0 ) )
212 msg_Warn( p_vout, "fd 0 is not a TTY" );
217 msg_Warn( p_vout, "disabling tty handling, use with caution because "
218 "there is no way to return to the tty." );
223 psz_chroma = var_CreateGetNonEmptyString( p_vout, "fb-chroma" );
226 if( strlen( psz_chroma ) == 4 )
228 p_sys->i_chroma = VLC_FOURCC( psz_chroma[0],
232 msg_Dbg( p_vout, "forcing chroma '%s'", psz_chroma );
236 msg_Warn( p_vout, "invalid chroma (%s), using defaults.",
243 p_sys->i_aspect = -1;
244 psz_aspect = var_CreateGetNonEmptyString( p_vout, "fb-aspect-ratio" );
247 char *psz_parser = strchr( psz_aspect, ':' );
251 *psz_parser++ = '\0';
252 p_sys->i_aspect = ( atoi( psz_aspect )
253 * VOUT_ASPECT_FACTOR ) / atoi( psz_parser );
255 msg_Dbg( p_vout, "using aspect ratio %d:%d",
256 atoi( psz_aspect ), atoi( psz_parser ) );
262 p_sys->b_auto = false;
263 i_mode = var_CreateGetInteger( p_vout, "fb-mode" );
267 p_sys->i_width = 176;
268 p_sys->i_height = 144;
271 p_sys->i_width = 352;
272 p_sys->i_height = 288;
275 p_sys->i_width = 640;
276 p_sys->i_height = 480;
279 p_sys->i_width = 704;
280 p_sys->i_height = 576;
284 p_sys->b_auto = true;
291 GfxMode( p_sys->i_tty );
293 /* Set keyboard settings */
294 if( tcgetattr(0, &p_vout->p_sys->old_termios) == -1 )
296 msg_Err( p_vout, "tcgetattr failed" );
299 if( tcgetattr(0, &new_termios) == -1 )
301 msg_Err( p_vout, "tcgetattr failed" );
304 /* new_termios.c_lflag &= ~ (ICANON | ISIG);
305 new_termios.c_lflag |= (ECHO | ECHOCTL); */
306 new_termios.c_lflag &= ~ (ICANON);
307 new_termios.c_lflag &= ~(ECHO | ECHOCTL);
308 new_termios.c_iflag = 0;
309 new_termios.c_cc[VMIN] = 1;
310 new_termios.c_cc[VTIME] = 0;
312 if( tcsetattr(0, TCSAFLUSH, &new_termios) == -1 )
314 msg_Err( p_vout, "tcsetattr failed" );
317 ioctl( p_sys->i_tty, VT_RELDISP, VT_ACKACQ );
319 /* Set-up tty signal handler to be aware of tty changes */
320 memset( &sig_tty, 0, sizeof( sig_tty ) );
321 sig_tty.sa_handler = SwitchDisplay;
322 sigemptyset( &sig_tty.sa_mask );
323 if( sigaction( SIGUSR1, &sig_tty, &p_vout->p_sys->sig_usr1 ) ||
324 sigaction( SIGUSR2, &sig_tty, &p_vout->p_sys->sig_usr2 ) )
326 msg_Err( p_vout, "cannot set signal handler (%m)" );
327 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
328 TextMode( p_sys->i_tty );
329 free( p_vout->p_sys );
333 /* Set-up tty according to new signal handler */
334 if( -1 == ioctl( p_sys->i_tty, VT_GETMODE, &p_vout->p_sys->vt_mode ) )
336 msg_Err( p_vout, "cannot get terminal mode (%m)" );
337 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
338 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
339 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
340 TextMode( p_sys->i_tty );
341 free( p_vout->p_sys );
344 memcpy( &vt_mode, &p_vout->p_sys->vt_mode, sizeof( vt_mode ) );
345 vt_mode.mode = VT_PROCESS;
347 vt_mode.relsig = SIGUSR1;
348 vt_mode.acqsig = SIGUSR2;
350 if( -1 == ioctl( p_sys->i_tty, VT_SETMODE, &vt_mode ) )
352 msg_Err( p_vout, "cannot set terminal mode (%m)" );
353 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
354 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
355 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
356 TextMode( p_sys->i_tty );
357 free( p_vout->p_sys );
362 if( OpenDisplay( p_vout ) )
364 Destroy( VLC_OBJECT(p_vout) );
372 /*****************************************************************************
373 * Destroy: destroy FB video thread output method
374 *****************************************************************************
375 * Terminate an output method created by Create
376 *****************************************************************************/
377 static void Destroy( vlc_object_t *p_this )
379 vout_thread_t *p_vout = (vout_thread_t *)p_this;
381 CloseDisplay( p_vout );
383 if( p_vout->p_sys->b_tty )
385 /* Reset the terminal */
386 ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
388 /* Remove signal handlers */
389 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
390 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
392 /* Reset the keyboard state */
393 tcsetattr( 0, 0, &p_vout->p_sys->old_termios );
395 /* Return to text mode */
396 TextMode( p_vout->p_sys->i_tty );
399 /* Destroy structure */
400 free( p_vout->p_sys );
403 /*****************************************************************************
404 * NewPicture: allocate a picture
405 *****************************************************************************
406 * Returns 0 on success, -1 otherwise
407 *****************************************************************************/
408 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
410 /* We know the chroma, allocate a buffer which will be used
411 * directly by the decoder */
412 p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
413 if( p_pic->p_sys == NULL )
418 /* Fill in picture_t fields */
419 vout_InitPicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
420 p_vout->output.i_width, p_vout->output.i_height,
421 p_vout->output.i_aspect );
423 p_pic->p_sys->p_data = malloc( p_vout->p_sys->i_page_size );
424 if( !p_pic->p_sys->p_data )
426 free( p_pic->p_sys );
431 p_pic->p->p_pixels = (uint8_t*) p_pic->p_sys->p_data;
433 p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
434 p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
435 p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
437 if( p_vout->p_sys->var_info.xres_virtual )
439 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
440 * p_vout->p_sys->i_bytes_per_pixel;
444 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
445 * p_vout->p_sys->i_bytes_per_pixel;
448 p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
449 * p_vout->p_sys->i_bytes_per_pixel;
455 /*****************************************************************************
456 * FreePicture: destroy a picture allocated with NewPicture
457 *****************************************************************************
458 * Destroy Image AND associated data.
459 *****************************************************************************/
460 static void FreePicture( vout_thread_t *p_vout, picture_t *p_pic )
463 free( p_pic->p_sys->p_data );
464 free( p_pic->p_sys );
468 /*****************************************************************************
469 * Init: initialize framebuffer video thread output method
470 *****************************************************************************/
471 static int Init( vout_thread_t *p_vout )
473 vout_sys_t *p_sys = p_vout->p_sys;
475 picture_t *p_pic = NULL;
477 I_OUTPUTPICTURES = 0;
479 p_vout->output.i_width = p_vout->render.i_width;
480 p_vout->output.i_height = p_vout->render.i_height;
481 p_vout->output.i_aspect = p_vout->render.i_aspect;
483 p_vout->fmt_out = p_vout->fmt_in;
484 if( p_sys->i_chroma == 0 )
486 /* Initialize the output structure: RGB with square pixels, whatever
487 * the input format is, since it's the only format we know */
488 switch( p_sys->var_info.bits_per_pixel )
490 case 8: /* FIXME: set the palette */
491 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
493 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
495 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
497 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
499 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
501 msg_Err( p_vout, "unknown screen depth %i",
502 p_vout->p_sys->var_info.bits_per_pixel );
506 if( p_sys->var_info.bits_per_pixel != 8 )
508 p_vout->output.i_rmask = ( (1 << p_sys->var_info.red.length) - 1 )
509 << p_sys->var_info.red.offset;
510 p_vout->output.i_gmask = ( (1 << p_sys->var_info.green.length) - 1 )
511 << p_sys->var_info.green.offset;
512 p_vout->output.i_bmask = ( (1 << p_sys->var_info.blue.length) - 1 )
513 << p_sys->var_info.blue.offset;
518 p_vout->output.i_chroma = p_sys->i_chroma;
520 p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
522 p_vout->output.i_width =
523 p_vout->fmt_out.i_width =
524 p_vout->fmt_out.i_visible_width = p_sys->i_width;
525 p_vout->output.i_height =
526 p_vout->fmt_out.i_height =
527 p_vout->fmt_out.i_visible_height = p_sys->i_height;
529 /* Assume we have square pixels */
530 if( p_sys->i_aspect < 0 )
532 p_vout->output.i_aspect = ( p_sys->i_width
533 * VOUT_ASPECT_FACTOR ) / p_sys->i_height;
535 else p_vout->output.i_aspect = p_sys->i_aspect;
537 p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_sar_den = 1;
538 p_vout->fmt_out.i_aspect = p_vout->render.i_aspect = p_vout->output.i_aspect;
539 p_vout->fmt_out.i_x_offset= p_vout->fmt_out.i_y_offset = 0;
541 /* Clear the screen */
542 memset( p_sys->p_video, 0, p_sys->i_page_size );
544 if( !p_sys->b_hw_accel )
546 /* Try to initialize up to MAX_DIRECTBUFFERS direct buffers */
547 while( I_OUTPUTPICTURES < MAX_DIRECTBUFFERS )
551 /* Find an empty picture slot */
552 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
554 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
556 p_pic = p_vout->p_picture + i_index;
561 /* Allocate the picture */
562 if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
567 p_pic->i_status = DESTROYED_PICTURE;
568 p_pic->i_type = DIRECT_PICTURE;
570 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
577 /* Try to initialize 1 direct buffer */
580 /* Find an empty picture slot */
581 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
583 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
585 p_pic = p_vout->p_picture + i_index;
590 /* Allocate the picture */
596 /* We know the chroma, allocate a buffer which will be used
597 * directly by the decoder */
598 p_pic->p->p_pixels = p_vout->p_sys->p_video;
599 p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
600 p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
601 p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
603 if( p_vout->p_sys->var_info.xres_virtual )
605 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
606 * p_vout->p_sys->i_bytes_per_pixel;
610 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
611 * p_vout->p_sys->i_bytes_per_pixel;
614 p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
615 * p_vout->p_sys->i_bytes_per_pixel;
617 p_pic->i_status = DESTROYED_PICTURE;
618 p_pic->i_type = DIRECT_PICTURE;
620 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
628 /*****************************************************************************
629 * End: terminate framebuffer video thread output method
630 *****************************************************************************/
631 static void End( vout_thread_t *p_vout )
633 if( !p_vout->p_sys->b_hw_accel )
637 /* Free the direct buffers we allocated */
638 for( i_index = I_OUTPUTPICTURES ; i_index ; )
641 FreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
645 /* Clear the screen */
646 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
649 /*****************************************************************************
650 * Control: control facility for the vout
651 *****************************************************************************/
652 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
657 return vout_vaControlDefault( p_vout, i_query, args );
661 /*****************************************************************************
662 * Manage: handle FB events
663 *****************************************************************************
664 * This function should be called regularly by video output thread. It manages
665 * console events. It returns a non null value on error.
666 *****************************************************************************/
667 static int Manage( vout_thread_t *p_vout )
672 if ( read(0, &buf, 1) == 1)
677 libvlc_Quit( p_vout->p_libvlc );
689 if( p_vout->i_changes & VOUT_SIZE_CHANGE )
691 msg_Dbg( p_vout, "reinitializing framebuffer screen" );
692 p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
694 /* Destroy XImages to change their size */
697 /* Recreate XImages. If SysInit failed, the thread can't go on. */
700 msg_Err( p_vout, "cannot reinit framebuffer screen" );
705 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
708 /* Tell the video output thread that it will need to rebuild YUV
709 * tables. This is needed since conversion buffer size may have changed */
710 p_vout->i_changes |= VOUT_YUV_CHANGE;
717 /*****************************************************************************
718 * Display: displays previously rendered output
719 *****************************************************************************
720 * This function send the currently rendered image to FB image, waits until
721 * it is displayed and switch the two rendering buffers, preparing next frame.
722 *****************************************************************************/
723 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
726 /* swap the two Y offsets if the drivers supports panning */
727 if( p_vout->p_sys->b_pan )
729 p_vout->p_sys->var_info.yoffset = 0;
730 /*p_vout->p_sys->var_info.yoffset = p_vout->p_sys->var_info.yres; */
732 /* the X offset should be 0, but who knows ...
733 * some other app might have played with the framebuffer */
734 p_vout->p_sys->var_info.xoffset = 0;
738 ioctl( p_vout->p_sys->i_fd,
739 FBIOPAN_DISPLAY, &p_vout->p_sys->var_info );
744 if( !p_vout->p_sys->b_hw_accel )
746 vlc_memcpy( p_vout->p_sys->p_video, p_pic->p->p_pixels,
747 p_vout->p_sys->i_page_size );
752 static void SetPalette( vout_thread_t *p_vout, uint16_t *red, uint16_t *green,
753 uint16_t *blue, uint16_t *transp )
755 struct fb_cmap cmap = { 0, 256, red, green, blue, transp };
757 ioctl( p_vout->p_sys->i_fd, FBIOPUTCMAP, &cmap );
761 /* following functions are local */
763 /*****************************************************************************
764 * OpenDisplay: initialize framebuffer
765 *****************************************************************************/
766 static int OpenDisplay( vout_thread_t *p_vout )
768 vout_sys_t *p_sys = (vout_sys_t *) p_vout->p_sys;
769 char *psz_device; /* framebuffer device path */
770 struct fb_fix_screeninfo fix_info; /* framebuffer fix information */
772 /* Open framebuffer device */
773 if( !(psz_device = config_GetPsz( p_vout, FB_DEV_VAR )) )
775 msg_Err( p_vout, "don't know which fb device to open" );
779 p_sys->i_fd = open( psz_device, O_RDWR);
780 if( p_sys->i_fd == -1 )
782 msg_Err( p_vout, "cannot open %s (%m)", psz_device );
789 /* Get framebuffer device information */
790 if( ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->var_info ) )
792 msg_Err( p_vout, "cannot get fb info (%m)" );
793 close( p_sys->i_fd );
797 memcpy( &p_sys->old_info, &p_sys->var_info,
798 sizeof( struct fb_var_screeninfo ) );
800 /* Get some info on the framebuffer itself */
803 p_sys->var_info.xres = p_sys->var_info.xres_virtual = p_sys->i_width;
804 p_sys->var_info.yres = p_sys->var_info.yres_virtual = p_sys->i_height;
805 p_vout->fmt_out.i_width = p_sys->i_width;
806 p_vout->fmt_out.i_height = p_sys->i_height;
809 /* Set some attributes */
810 p_sys->var_info.activate = p_sys->b_tty
811 ? FB_ACTIVATE_NXTOPEN
813 p_sys->var_info.xoffset = 0;
814 p_sys->var_info.yoffset = 0;
816 if( ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->var_info ) )
818 msg_Err( p_vout, "cannot set fb info (%m)" );
819 close( p_sys->i_fd );
823 /* Get some information again, in the definitive configuration */
824 if( ioctl( p_sys->i_fd, FBIOGET_FSCREENINFO, &fix_info )
825 || ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->var_info ) )
827 msg_Err( p_vout, "cannot get additional fb info (%m)" );
829 /* Restore fb config */
830 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
832 close( p_sys->i_fd );
836 /* If the fb has limitations on mode change,
837 * then keep the resolution of the fb */
838 if( (p_sys->i_height != p_sys->var_info.yres) ||
839 (p_sys->i_width != p_sys->var_info.xres) )
841 p_sys->b_auto = true;
843 "using framebuffer native resolution instead of requested (%ix%i)",
844 p_sys->i_width, p_sys->i_height );
846 p_sys->i_height = p_sys->var_info.yres;
847 p_sys->i_width = p_sys->var_info.xres_virtual
848 ? p_sys->var_info.xres_virtual
849 : p_sys->var_info.xres;
851 /* FIXME: if the image is full-size, it gets cropped on the left
852 * because of the xres / xres_virtual slight difference */
853 msg_Dbg( p_vout, "%ix%i (virtual %ix%i) (request %ix%i)",
854 p_sys->var_info.xres, p_sys->var_info.yres,
855 p_sys->var_info.xres_virtual,
856 p_sys->var_info.yres_virtual,
857 p_sys->i_width, p_sys->i_height );
859 p_sys->p_palette = NULL;
860 p_sys->b_pan = ( fix_info.ypanstep || fix_info.ywrapstep );
862 switch( p_sys->var_info.bits_per_pixel )
865 p_sys->p_palette = malloc( 8 * 256 * sizeof( uint16_t ) );
866 if( !p_sys->p_palette )
868 /* Restore fb config */
869 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
871 close( p_sys->i_fd );
874 p_sys->fb_cmap.start = 0;
875 p_sys->fb_cmap.len = 256;
876 p_sys->fb_cmap.red = p_sys->p_palette;
877 p_sys->fb_cmap.green = p_sys->p_palette + 256 * sizeof( uint16_t );
878 p_sys->fb_cmap.blue = p_sys->p_palette + 2 * 256 * sizeof( uint16_t );
879 p_sys->fb_cmap.transp = p_sys->p_palette + 3 * 256 * sizeof( uint16_t );
881 /* Save the colormap */
882 ioctl( p_sys->i_fd, FBIOGETCMAP, &p_sys->fb_cmap );
884 p_sys->i_bytes_per_pixel = 1;
889 p_sys->i_bytes_per_pixel = 2;
893 p_sys->i_bytes_per_pixel = 3;
897 p_sys->i_bytes_per_pixel = 4;
901 msg_Err( p_vout, "screen depth %d is not supported",
902 p_sys->var_info.bits_per_pixel );
904 /* Restore fb config */
905 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
907 close( p_sys->i_fd );
911 p_sys->i_page_size = p_sys->i_width * p_sys->i_height *
912 p_sys->i_bytes_per_pixel;
914 /* Map a framebuffer at the beginning */
915 p_sys->p_video = mmap( NULL, p_sys->i_page_size,
916 PROT_READ | PROT_WRITE, MAP_SHARED,
919 if( p_sys->p_video == ((void*)-1) )
921 msg_Err( p_vout, "cannot map video memory (%m)" );
923 if( p_sys->var_info.bits_per_pixel == 8 )
925 free( p_sys->p_palette );
926 p_sys->p_palette = NULL;
929 /* Restore fb config */
930 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
932 close( p_sys->i_fd );
936 msg_Dbg( p_vout, "framebuffer type=%d, visual=%d, ypanstep=%d, "
937 "ywrap=%d, accel=%d", fix_info.type, fix_info.visual,
938 fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel );
942 /*****************************************************************************
943 * CloseDisplay: terminate FB video thread output method
944 *****************************************************************************/
945 static void CloseDisplay( vout_thread_t *p_vout )
947 if( p_vout->p_sys->p_video )
950 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
951 munmap( p_vout->p_sys->p_video, p_vout->p_sys->i_page_size );
954 if( p_vout->p_sys->i_fd >= 0 )
956 /* Restore palette */
957 if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
959 ioctl( p_vout->p_sys->i_fd,
960 FBIOPUTCMAP, &p_vout->p_sys->fb_cmap );
961 free( p_vout->p_sys->p_palette );
962 p_vout->p_sys->p_palette = NULL;
965 /* Restore fb config */
966 ioctl( p_vout->p_sys->i_fd,
967 FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
970 close( p_vout->p_sys->i_fd );
974 /*****************************************************************************
975 * SwitchDisplay: VT change signal handler
976 *****************************************************************************
977 * This function activates or deactivates the output of the thread. It is
978 * called by the VT driver, on terminal change.
979 *****************************************************************************/
980 static void SwitchDisplay( int i_signal )
982 VLC_UNUSED( i_signal );
984 vout_thread_t *p_vout;
986 vlc_mutex_lock( &p_vout_bank->lock );
988 /* XXX: only test the first video output */
989 if( p_vout_bank->i_count )
991 p_vout = p_vout_bank->pp_vout[0];
995 case SIGUSR1: /* vt has been released */
996 p_vout->b_active = 0;
997 ioctl( p_sys->i_tty, VT_RELDISP, 1 );
999 case SIGUSR2: /* vt has been acquired */
1000 p_vout->b_active = 1;
1001 ioctl( p_sys->i_tty, VT_RELDISP, VT_ACTIVATE );
1002 /* handle blanking */
1003 vlc_mutex_lock( &p_vout->change_lock );
1004 p_vout->i_changes |= VOUT_SIZE_CHANGE;
1005 vlc_mutex_unlock( &p_vout->change_lock );
1010 vlc_mutex_unlock( &p_vout_bank->lock );
1014 /*****************************************************************************
1015 * TextMode and GfxMode : switch tty to text/graphic mode
1016 *****************************************************************************
1017 * These functions toggle the tty mode.
1018 *****************************************************************************/
1019 static void TextMode( int i_tty )
1021 /* return to text mode */
1022 if( -1 == ioctl(i_tty, KDSETMODE, KD_TEXT) )
1024 /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_TEXT" );*/
1028 static void GfxMode( int i_tty )
1030 /* switch to graphic mode */
1031 if( -1 == ioctl(i_tty, KDSETMODE, KD_GRAPHICS) )
1033 /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_GRAPHICS" );*/