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_sys->p_video = MAP_FAILED;
196 p_vout->pf_init = Init;
197 p_vout->pf_end = End;
198 p_vout->pf_manage = Manage;
199 p_vout->pf_render = NULL;
200 p_vout->pf_display = Display;
201 p_vout->pf_control = Control;
203 /* Does the framebuffer uses hw acceleration? */
204 p_sys->b_hw_accel = var_CreateGetBool( p_vout, "fb-hw-accel" );
206 /* Set tty and fb devices */
207 p_sys->i_tty = 0; /* 0 == /dev/tty0 == current console */
208 p_sys->b_tty = var_CreateGetBool( p_vout, "fb-tty" );
210 #if defined(HAVE_ISATTY)
211 /* Check that stdin is a TTY */
212 if( p_sys->b_tty && !isatty( 0 ) )
214 msg_Warn( p_vout, "fd 0 is not a TTY" );
219 msg_Warn( p_vout, "disabling tty handling, use with caution because "
220 "there is no way to return to the tty." );
225 psz_chroma = var_CreateGetNonEmptyString( p_vout, "fb-chroma" );
228 if( strlen( psz_chroma ) == 4 )
230 p_sys->i_chroma = VLC_FOURCC( psz_chroma[0],
234 msg_Dbg( p_vout, "forcing chroma '%s'", psz_chroma );
238 msg_Warn( p_vout, "invalid chroma (%s), using defaults.",
245 p_sys->i_aspect = -1;
246 psz_aspect = var_CreateGetNonEmptyString( p_vout, "fb-aspect-ratio" );
249 char *psz_parser = strchr( psz_aspect, ':' );
253 *psz_parser++ = '\0';
254 p_sys->i_aspect = ( atoi( psz_aspect )
255 * VOUT_ASPECT_FACTOR ) / atoi( psz_parser );
257 msg_Dbg( p_vout, "using aspect ratio %d:%d",
258 atoi( psz_aspect ), atoi( psz_parser ) );
264 p_sys->b_auto = false;
265 i_mode = var_CreateGetInteger( p_vout, "fb-mode" );
269 p_sys->i_width = 176;
270 p_sys->i_height = 144;
273 p_sys->i_width = 352;
274 p_sys->i_height = 288;
277 p_sys->i_width = 640;
278 p_sys->i_height = 480;
281 p_sys->i_width = 704;
282 p_sys->i_height = 576;
286 p_sys->b_auto = true;
293 GfxMode( p_sys->i_tty );
295 /* Set keyboard settings */
296 if( tcgetattr(0, &p_vout->p_sys->old_termios) == -1 )
298 msg_Err( p_vout, "tcgetattr failed" );
301 if( tcgetattr(0, &new_termios) == -1 )
303 msg_Err( p_vout, "tcgetattr failed" );
306 /* new_termios.c_lflag &= ~ (ICANON | ISIG);
307 new_termios.c_lflag |= (ECHO | ECHOCTL); */
308 new_termios.c_lflag &= ~ (ICANON);
309 new_termios.c_lflag &= ~(ECHO | ECHOCTL);
310 new_termios.c_iflag = 0;
311 new_termios.c_cc[VMIN] = 1;
312 new_termios.c_cc[VTIME] = 0;
314 if( tcsetattr(0, TCSAFLUSH, &new_termios) == -1 )
316 msg_Err( p_vout, "tcsetattr failed" );
319 ioctl( p_sys->i_tty, VT_RELDISP, VT_ACKACQ );
321 /* Set-up tty signal handler to be aware of tty changes */
322 memset( &sig_tty, 0, sizeof( sig_tty ) );
323 sig_tty.sa_handler = SwitchDisplay;
324 sigemptyset( &sig_tty.sa_mask );
325 if( sigaction( SIGUSR1, &sig_tty, &p_vout->p_sys->sig_usr1 ) ||
326 sigaction( SIGUSR2, &sig_tty, &p_vout->p_sys->sig_usr2 ) )
328 msg_Err( p_vout, "cannot set signal handler (%m)" );
329 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
330 TextMode( p_sys->i_tty );
331 free( p_vout->p_sys );
335 /* Set-up tty according to new signal handler */
336 if( -1 == ioctl( p_sys->i_tty, VT_GETMODE, &p_vout->p_sys->vt_mode ) )
338 msg_Err( p_vout, "cannot get terminal mode (%m)" );
339 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
340 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
341 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
342 TextMode( p_sys->i_tty );
343 free( p_vout->p_sys );
346 memcpy( &vt_mode, &p_vout->p_sys->vt_mode, sizeof( vt_mode ) );
347 vt_mode.mode = VT_PROCESS;
349 vt_mode.relsig = SIGUSR1;
350 vt_mode.acqsig = SIGUSR2;
352 if( -1 == ioctl( p_sys->i_tty, VT_SETMODE, &vt_mode ) )
354 msg_Err( p_vout, "cannot set terminal mode (%m)" );
355 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
356 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
357 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
358 TextMode( p_sys->i_tty );
359 free( p_vout->p_sys );
364 if( OpenDisplay( p_vout ) )
366 Destroy( VLC_OBJECT(p_vout) );
374 /*****************************************************************************
375 * Destroy: destroy FB video thread output method
376 *****************************************************************************
377 * Terminate an output method created by Create
378 *****************************************************************************/
379 static void Destroy( vlc_object_t *p_this )
381 vout_thread_t *p_vout = (vout_thread_t *)p_this;
383 CloseDisplay( p_vout );
385 if( p_vout->p_sys->b_tty )
387 /* Reset the terminal */
388 ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
390 /* Remove signal handlers */
391 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
392 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
394 /* Reset the keyboard state */
395 tcsetattr( 0, 0, &p_vout->p_sys->old_termios );
397 /* Return to text mode */
398 TextMode( p_vout->p_sys->i_tty );
401 /* Destroy structure */
402 free( p_vout->p_sys );
405 /*****************************************************************************
406 * NewPicture: allocate a picture
407 *****************************************************************************
408 * Returns 0 on success, -1 otherwise
409 *****************************************************************************/
410 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
412 /* We know the chroma, allocate a buffer which will be used
413 * directly by the decoder */
414 p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
415 if( p_pic->p_sys == NULL )
420 /* Fill in picture_t fields */
421 vout_InitPicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
422 p_vout->output.i_width, p_vout->output.i_height,
423 p_vout->output.i_aspect );
425 p_pic->p_sys->p_data = malloc( p_vout->p_sys->i_page_size );
426 if( !p_pic->p_sys->p_data )
428 free( p_pic->p_sys );
433 p_pic->p->p_pixels = (uint8_t*) p_pic->p_sys->p_data;
435 p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
436 p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
437 p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
439 if( p_vout->p_sys->var_info.xres_virtual )
441 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
442 * p_vout->p_sys->i_bytes_per_pixel;
446 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
447 * p_vout->p_sys->i_bytes_per_pixel;
450 p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
451 * p_vout->p_sys->i_bytes_per_pixel;
457 /*****************************************************************************
458 * FreePicture: destroy a picture allocated with NewPicture
459 *****************************************************************************
460 * Destroy Image AND associated data.
461 *****************************************************************************/
462 static void FreePicture( vout_thread_t *p_vout, picture_t *p_pic )
465 free( p_pic->p_sys->p_data );
466 free( p_pic->p_sys );
470 /*****************************************************************************
471 * Init: initialize framebuffer video thread output method
472 *****************************************************************************/
473 static int Init( vout_thread_t *p_vout )
475 vout_sys_t *p_sys = p_vout->p_sys;
477 picture_t *p_pic = NULL;
479 I_OUTPUTPICTURES = 0;
481 p_vout->output.i_width = p_vout->render.i_width;
482 p_vout->output.i_height = p_vout->render.i_height;
483 p_vout->output.i_aspect = p_vout->render.i_aspect;
485 p_vout->fmt_out = p_vout->fmt_in;
486 if( p_sys->i_chroma == 0 )
488 /* Initialize the output structure: RGB with square pixels, whatever
489 * the input format is, since it's the only format we know */
490 switch( p_sys->var_info.bits_per_pixel )
492 case 8: /* FIXME: set the palette */
493 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
495 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
497 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
499 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
501 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
503 msg_Err( p_vout, "unknown screen depth %i",
504 p_vout->p_sys->var_info.bits_per_pixel );
508 if( p_sys->var_info.bits_per_pixel != 8 )
510 p_vout->output.i_rmask = ( (1 << p_sys->var_info.red.length) - 1 )
511 << p_sys->var_info.red.offset;
512 p_vout->output.i_gmask = ( (1 << p_sys->var_info.green.length) - 1 )
513 << p_sys->var_info.green.offset;
514 p_vout->output.i_bmask = ( (1 << p_sys->var_info.blue.length) - 1 )
515 << p_sys->var_info.blue.offset;
520 p_vout->output.i_chroma = p_sys->i_chroma;
522 p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
524 p_vout->output.i_width =
525 p_vout->fmt_out.i_width =
526 p_vout->fmt_out.i_visible_width = p_sys->i_width;
527 p_vout->output.i_height =
528 p_vout->fmt_out.i_height =
529 p_vout->fmt_out.i_visible_height = p_sys->i_height;
531 /* Assume we have square pixels */
532 if( p_sys->i_aspect < 0 )
534 p_vout->output.i_aspect = ( p_sys->i_width
535 * VOUT_ASPECT_FACTOR ) / p_sys->i_height;
537 else p_vout->output.i_aspect = p_sys->i_aspect;
539 p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_sar_den = 1;
540 p_vout->fmt_out.i_aspect = p_vout->render.i_aspect = p_vout->output.i_aspect;
541 p_vout->fmt_out.i_x_offset= p_vout->fmt_out.i_y_offset = 0;
543 /* Clear the screen */
544 memset( p_sys->p_video, 0, p_sys->i_page_size );
546 if( !p_sys->b_hw_accel )
548 /* Try to initialize up to MAX_DIRECTBUFFERS direct buffers */
549 while( I_OUTPUTPICTURES < MAX_DIRECTBUFFERS )
553 /* Find an empty picture slot */
554 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
556 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
558 p_pic = p_vout->p_picture + i_index;
563 /* Allocate the picture */
564 if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
569 p_pic->i_status = DESTROYED_PICTURE;
570 p_pic->i_type = DIRECT_PICTURE;
572 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
579 /* Try to initialize 1 direct buffer */
582 /* Find an empty picture slot */
583 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
585 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
587 p_pic = p_vout->p_picture + i_index;
592 /* Allocate the picture */
598 /* We know the chroma, allocate a buffer which will be used
599 * directly by the decoder */
600 p_pic->p->p_pixels = p_vout->p_sys->p_video;
601 p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
602 p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
603 p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
605 if( p_vout->p_sys->var_info.xres_virtual )
607 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
608 * p_vout->p_sys->i_bytes_per_pixel;
612 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
613 * p_vout->p_sys->i_bytes_per_pixel;
616 p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
617 * p_vout->p_sys->i_bytes_per_pixel;
619 p_pic->i_status = DESTROYED_PICTURE;
620 p_pic->i_type = DIRECT_PICTURE;
622 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
630 /*****************************************************************************
631 * End: terminate framebuffer video thread output method
632 *****************************************************************************/
633 static void End( vout_thread_t *p_vout )
635 if( !p_vout->p_sys->b_hw_accel )
639 /* Free the direct buffers we allocated */
640 for( i_index = I_OUTPUTPICTURES ; i_index ; )
643 FreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
647 /* Clear the screen */
648 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
651 /*****************************************************************************
652 * Control: control facility for the vout
653 *****************************************************************************/
654 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
656 (void) p_vout; (void) i_query; (void) args;
660 /*****************************************************************************
661 * Manage: handle FB events
662 *****************************************************************************
663 * This function should be called regularly by video output thread. It manages
664 * console events. It returns a non null value on error.
665 *****************************************************************************/
666 static int Manage( vout_thread_t *p_vout )
671 if ( read(0, &buf, 1) == 1)
676 libvlc_Quit( p_vout->p_libvlc );
688 if( p_vout->i_changes & VOUT_SIZE_CHANGE )
690 msg_Dbg( p_vout, "reinitializing framebuffer screen" );
691 p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
693 /* Destroy XImages to change their size */
696 /* Recreate XImages. If SysInit failed, the thread can't go on. */
699 msg_Err( p_vout, "cannot reinit framebuffer screen" );
704 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
707 /* Tell the video output thread that it will need to rebuild YUV
708 * tables. This is needed since conversion buffer size may have changed */
709 p_vout->i_changes |= VOUT_YUV_CHANGE;
716 /*****************************************************************************
717 * Display: displays previously rendered output
718 *****************************************************************************
719 * This function send the currently rendered image to FB image, waits until
720 * it is displayed and switch the two rendering buffers, preparing next frame.
721 *****************************************************************************/
722 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
725 /* swap the two Y offsets if the drivers supports panning */
726 if( p_vout->p_sys->b_pan )
728 p_vout->p_sys->var_info.yoffset = 0;
729 /*p_vout->p_sys->var_info.yoffset = p_vout->p_sys->var_info.yres; */
731 /* the X offset should be 0, but who knows ...
732 * some other app might have played with the framebuffer */
733 p_vout->p_sys->var_info.xoffset = 0;
737 ioctl( p_vout->p_sys->i_fd,
738 FBIOPAN_DISPLAY, &p_vout->p_sys->var_info );
743 if( !p_vout->p_sys->b_hw_accel )
745 vlc_memcpy( p_vout->p_sys->p_video, p_pic->p->p_pixels,
746 p_vout->p_sys->i_page_size );
751 static void SetPalette( vout_thread_t *p_vout, uint16_t *red, uint16_t *green,
752 uint16_t *blue, uint16_t *transp )
754 struct fb_cmap cmap = { 0, 256, red, green, blue, transp };
756 ioctl( p_vout->p_sys->i_fd, FBIOPUTCMAP, &cmap );
760 /* following functions are local */
762 /*****************************************************************************
763 * OpenDisplay: initialize framebuffer
764 *****************************************************************************/
765 static int OpenDisplay( vout_thread_t *p_vout )
767 vout_sys_t *p_sys = (vout_sys_t *) p_vout->p_sys;
768 char *psz_device; /* framebuffer device path */
769 struct fb_fix_screeninfo fix_info; /* framebuffer fix information */
771 /* Open framebuffer device */
772 if( !(psz_device = config_GetPsz( p_vout, FB_DEV_VAR )) )
774 msg_Err( p_vout, "don't know which fb device to open" );
778 p_sys->i_fd = open( psz_device, O_RDWR);
779 if( p_sys->i_fd == -1 )
781 msg_Err( p_vout, "cannot open %s (%m)", psz_device );
788 /* Get framebuffer device information */
789 if( ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->var_info ) )
791 msg_Err( p_vout, "cannot get fb info (%m)" );
792 close( p_sys->i_fd );
796 memcpy( &p_sys->old_info, &p_sys->var_info,
797 sizeof( struct fb_var_screeninfo ) );
799 /* Get some info on the framebuffer itself */
802 p_sys->var_info.xres = p_sys->var_info.xres_virtual = p_sys->i_width;
803 p_sys->var_info.yres = p_sys->var_info.yres_virtual = p_sys->i_height;
804 p_vout->fmt_out.i_width = p_sys->i_width;
805 p_vout->fmt_out.i_height = p_sys->i_height;
808 /* Set some attributes */
809 p_sys->var_info.activate = p_sys->b_tty
810 ? FB_ACTIVATE_NXTOPEN
812 p_sys->var_info.xoffset = 0;
813 p_sys->var_info.yoffset = 0;
815 if( ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->var_info ) )
817 msg_Err( p_vout, "cannot set fb info (%m)" );
818 close( p_sys->i_fd );
822 /* Get some information again, in the definitive configuration */
823 if( ioctl( p_sys->i_fd, FBIOGET_FSCREENINFO, &fix_info )
824 || ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->var_info ) )
826 msg_Err( p_vout, "cannot get additional fb info (%m)" );
828 /* Restore fb config */
829 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
831 close( p_sys->i_fd );
835 /* If the fb has limitations on mode change,
836 * then keep the resolution of the fb */
837 if( (p_sys->i_height != p_sys->var_info.yres) ||
838 (p_sys->i_width != p_sys->var_info.xres) )
840 p_sys->b_auto = true;
842 "using framebuffer native resolution instead of requested (%ix%i)",
843 p_sys->i_width, p_sys->i_height );
845 p_sys->i_height = p_sys->var_info.yres;
846 p_sys->i_width = p_sys->var_info.xres_virtual
847 ? p_sys->var_info.xres_virtual
848 : p_sys->var_info.xres;
850 /* FIXME: if the image is full-size, it gets cropped on the left
851 * because of the xres / xres_virtual slight difference */
852 msg_Dbg( p_vout, "%ix%i (virtual %ix%i) (request %ix%i)",
853 p_sys->var_info.xres, p_sys->var_info.yres,
854 p_sys->var_info.xres_virtual,
855 p_sys->var_info.yres_virtual,
856 p_sys->i_width, p_sys->i_height );
858 p_sys->p_palette = NULL;
859 p_sys->b_pan = ( fix_info.ypanstep || fix_info.ywrapstep );
861 switch( p_sys->var_info.bits_per_pixel )
864 p_sys->p_palette = malloc( 8 * 256 * sizeof( uint16_t ) );
865 if( !p_sys->p_palette )
867 /* Restore fb config */
868 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
870 close( p_sys->i_fd );
873 p_sys->fb_cmap.start = 0;
874 p_sys->fb_cmap.len = 256;
875 p_sys->fb_cmap.red = p_sys->p_palette;
876 p_sys->fb_cmap.green = p_sys->p_palette + 256 * sizeof( uint16_t );
877 p_sys->fb_cmap.blue = p_sys->p_palette + 2 * 256 * sizeof( uint16_t );
878 p_sys->fb_cmap.transp = p_sys->p_palette + 3 * 256 * sizeof( uint16_t );
880 /* Save the colormap */
881 ioctl( p_sys->i_fd, FBIOGETCMAP, &p_sys->fb_cmap );
883 p_sys->i_bytes_per_pixel = 1;
888 p_sys->i_bytes_per_pixel = 2;
892 p_sys->i_bytes_per_pixel = 3;
896 p_sys->i_bytes_per_pixel = 4;
900 msg_Err( p_vout, "screen depth %d is not supported",
901 p_sys->var_info.bits_per_pixel );
903 /* Restore fb config */
904 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
906 close( p_sys->i_fd );
910 p_sys->i_page_size = p_sys->i_width * p_sys->i_height *
911 p_sys->i_bytes_per_pixel;
913 /* Map a framebuffer at the beginning */
914 p_sys->p_video = mmap( NULL, p_sys->i_page_size,
915 PROT_READ | PROT_WRITE, MAP_SHARED,
918 if( p_sys->p_video == MAP_FAILED )
920 msg_Err( p_vout, "cannot map video memory (%m)" );
922 if( p_sys->var_info.bits_per_pixel == 8 )
924 free( p_sys->p_palette );
925 p_sys->p_palette = NULL;
928 /* Restore fb config */
929 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
931 close( p_sys->i_fd );
935 msg_Dbg( p_vout, "framebuffer type=%d, visual=%d, ypanstep=%d, "
936 "ywrap=%d, accel=%d", fix_info.type, fix_info.visual,
937 fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel );
941 /*****************************************************************************
942 * CloseDisplay: terminate FB video thread output method
943 *****************************************************************************/
944 static void CloseDisplay( vout_thread_t *p_vout )
946 if( p_vout->p_sys->p_video != MAP_FAILED )
949 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
950 munmap( p_vout->p_sys->p_video, p_vout->p_sys->i_page_size );
953 if( p_vout->p_sys->i_fd >= 0 )
955 /* Restore palette */
956 if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
958 ioctl( p_vout->p_sys->i_fd,
959 FBIOPUTCMAP, &p_vout->p_sys->fb_cmap );
960 free( p_vout->p_sys->p_palette );
961 p_vout->p_sys->p_palette = NULL;
964 /* Restore fb config */
965 ioctl( p_vout->p_sys->i_fd,
966 FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
969 close( p_vout->p_sys->i_fd );
973 /*****************************************************************************
974 * SwitchDisplay: VT change signal handler
975 *****************************************************************************
976 * This function activates or deactivates the output of the thread. It is
977 * called by the VT driver, on terminal change.
978 *****************************************************************************/
979 static void SwitchDisplay( int i_signal )
981 VLC_UNUSED( i_signal );
983 vout_thread_t *p_vout;
985 vlc_mutex_lock( &p_vout_bank->lock );
987 /* XXX: only test the first video output */
988 if( p_vout_bank->i_count )
990 p_vout = p_vout_bank->pp_vout[0];
994 case SIGUSR1: /* vt has been released */
995 p_vout->b_active = 0;
996 ioctl( p_sys->i_tty, VT_RELDISP, 1 );
998 case SIGUSR2: /* vt has been acquired */
999 p_vout->b_active = 1;
1000 ioctl( p_sys->i_tty, VT_RELDISP, VT_ACTIVATE );
1001 /* handle blanking */
1002 vlc_mutex_lock( &p_vout->change_lock );
1003 p_vout->i_changes |= VOUT_SIZE_CHANGE;
1004 vlc_mutex_unlock( &p_vout->change_lock );
1009 vlc_mutex_unlock( &p_vout_bank->lock );
1013 /*****************************************************************************
1014 * TextMode and GfxMode : switch tty to text/graphic mode
1015 *****************************************************************************
1016 * These functions toggle the tty mode.
1017 *****************************************************************************/
1018 static void TextMode( int i_tty )
1020 /* return to text mode */
1021 if( -1 == ioctl(i_tty, KDSETMODE, KD_TEXT) )
1023 /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_TEXT" );*/
1027 static void GfxMode( int i_tty )
1029 /* switch to graphic mode */
1030 if( -1 == ioctl(i_tty, KDSETMODE, KD_GRAPHICS) )
1032 /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_GRAPHICS" );*/