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 *****************************************************************************/
28 #include <errno.h> /* ENOMEM */
29 #include <signal.h> /* SIGUSR1, SIGUSR2 */
30 #include <fcntl.h> /* open() */
31 #include <unistd.h> /* close() */
33 #include <termios.h> /* struct termios */
34 #include <sys/ioctl.h>
35 #include <sys/mman.h> /* mmap() */
38 #include <linux/vt.h> /* VT_* */
39 #include <linux/kd.h> /* KD* */
46 #include <vlc_plugin.h>
49 /*****************************************************************************
51 *****************************************************************************/
52 static int Create ( vlc_object_t * );
53 static void Destroy ( vlc_object_t * );
55 static int Init ( vout_thread_t * );
56 static void End ( vout_thread_t * );
57 static int Manage ( vout_thread_t * );
58 static void Display ( vout_thread_t *, picture_t * );
59 static int Control ( vout_thread_t *, int, va_list );
61 static int NewPicture ( vout_thread_t *, picture_t * );
62 static void FreePicture ( vout_thread_t *, picture_t * );
64 static int OpenDisplay ( vout_thread_t * );
65 static void CloseDisplay ( vout_thread_t * );
66 static void SwitchDisplay ( int i_signal );
67 static void TextMode ( int i_tty );
68 static void GfxMode ( int i_tty );
70 #define MAX_DIRECTBUFFERS 1
72 /*****************************************************************************
74 *****************************************************************************/
75 #define FB_DEV_VAR "fbdev"
77 #define DEVICE_TEXT N_("Framebuffer device")
78 #define DEVICE_LONGTEXT N_( \
79 "Framebuffer device to use for rendering (usually /dev/fb0).")
81 #define TTY_TEXT N_("Run fb on current tty.")
82 #define TTY_LONGTEXT N_( \
83 "Run framebuffer on current TTY device (default enabled). " \
84 "(disable tty handling with caution)" )
86 #define CHROMA_TEXT N_("Chroma used.")
87 #define CHROMA_LONGTEXT N_( \
88 "Force use of a specific chroma for output. Default is I420." )
90 #define ASPECT_RATIO_TEXT N_("Video aspect ratio")
91 #define ASPECT_RATIO_LONGTEXT N_( \
92 "Aspect ratio of the video image (4:3, 16:9). Default is square pixels." )
94 #define FB_MODE_TEXT N_("Framebuffer resolution to use.")
95 #define FB_MODE_LONGTEXT N_( \
96 "Select the resolution for the framebuffer. Currently it supports " \
97 "the values 0=QCIF 1=CIF 2=NTSC 3=PAL, 4=auto (default 4=auto)" )
99 #define HW_ACCEL_TEXT N_("Framebuffer uses hw acceleration.")
100 #define HW_ACCEL_LONGTEXT N_( \
101 "If your framebuffer supports hardware acceleration or does double buffering " \
102 "in hardware then you must disable this option. It then does double buffering " \
106 set_shortname( "Framebuffer" );
107 set_category( CAT_VIDEO );
108 set_subcategory( SUBCAT_VIDEO_VOUT );
109 add_file( FB_DEV_VAR, "/dev/fb0", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
111 add_bool( "fb-tty", 1, NULL, TTY_TEXT, TTY_LONGTEXT, true );
112 add_string( "fb-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
114 add_string( "fb-aspect-ratio", NULL, NULL, ASPECT_RATIO_TEXT,
115 ASPECT_RATIO_LONGTEXT, true );
116 add_integer( "fb-mode", 4, NULL, FB_MODE_TEXT, FB_MODE_LONGTEXT,
118 add_bool( "fb-hw-accel", true, NULL, HW_ACCEL_TEXT, HW_ACCEL_LONGTEXT,
120 set_description( N_("GNU/Linux console framebuffer video output") );
121 set_capability( "video output", 30 );
122 set_callbacks( Create, Destroy );
125 /*****************************************************************************
126 * vout_sys_t: video output framebuffer method descriptor
127 *****************************************************************************
128 * This structure is part of the video output thread descriptor.
129 * It describes the FB specific properties of an output thread.
130 *****************************************************************************/
133 /* System information */
134 int i_tty; /* tty device handle */
136 struct termios old_termios;
138 /* Original configuration information */
139 struct sigaction sig_usr1; /* USR1 previous handler */
140 struct sigaction sig_usr2; /* USR2 previous handler */
141 struct vt_mode vt_mode; /* previous VT mode */
143 /* Framebuffer information */
144 int i_fd; /* device handle */
145 struct fb_var_screeninfo old_info; /* original mode information */
146 struct fb_var_screeninfo var_info; /* current mode information */
147 bool b_pan; /* does device supports panning ? */
148 struct fb_cmap fb_cmap; /* original colormap */
149 uint16_t *p_palette; /* original palette */
150 bool b_hw_accel; /* has hardware support */
152 /* Video information */
156 int i_bytes_per_pixel;
157 bool b_auto; /* Automatically adjust video size to fb size */
158 vlc_fourcc_t i_chroma;
161 uint8_t * p_video; /* base adress */
162 size_t i_page_size; /* page size */
167 uint8_t * p_data; /* base adress */
170 /*****************************************************************************
171 * Create: allocates FB video thread output method
172 *****************************************************************************
173 * This function allocates and initializes a FB vout method.
174 *****************************************************************************/
175 static int Create( vlc_object_t *p_this )
177 vout_thread_t *p_vout = (vout_thread_t *)p_this;
182 struct sigaction sig_tty; /* sigaction for tty change */
183 struct vt_mode vt_mode; /* vt current mode */
184 struct termios new_termios;
186 /* Allocate instance and initialize some members */
187 p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
188 if( p_vout->p_sys == NULL )
190 msg_Err( p_vout, "out of memory" );
193 memset( p_sys, 0, sizeof(vout_sys_t) );
195 p_vout->pf_init = Init;
196 p_vout->pf_end = End;
197 p_vout->pf_manage = Manage;
198 p_vout->pf_render = NULL;
199 p_vout->pf_display = Display;
200 p_vout->pf_control = Control;
202 /* Does the framebuffer uses hw acceleration? */
203 p_sys->b_hw_accel = var_CreateGetBool( p_vout, "fb-hw-accel" );
205 /* Set tty and fb devices */
206 p_sys->i_tty = 0; /* 0 == /dev/tty0 == current console */
207 p_sys->b_tty = var_CreateGetBool( p_vout, "fb-tty" );
209 #if defined(HAVE_ISATTY)
210 /* Check that stdin is a TTY */
211 if( p_sys->b_tty && !isatty( 0 ) )
213 msg_Warn( p_vout, "fd 0 is not a TTY" );
218 msg_Warn( p_vout, "disabling tty handling, use with caution because "
219 "there is no way to return to the tty." );
224 psz_chroma = var_CreateGetNonEmptyString( p_vout, "fb-chroma" );
227 if( strlen( psz_chroma ) == 4 )
229 p_sys->i_chroma = VLC_FOURCC( psz_chroma[0],
233 msg_Dbg( p_vout, "forcing chroma '%s'", psz_chroma );
237 msg_Warn( p_vout, "invalid chroma (%s), using defaults.",
244 p_sys->i_aspect = -1;
245 psz_aspect = var_CreateGetNonEmptyString( p_vout, "fb-aspect-ratio" );
248 char *psz_parser = strchr( psz_aspect, ':' );
252 *psz_parser++ = '\0';
253 p_sys->i_aspect = ( atoi( psz_aspect )
254 * VOUT_ASPECT_FACTOR ) / atoi( psz_parser );
256 msg_Dbg( p_vout, "using aspect ratio %d:%d",
257 atoi( psz_aspect ), atoi( psz_parser ) );
263 p_sys->b_auto = false;
264 i_mode = var_CreateGetInteger( p_vout, "fb-mode" );
268 p_sys->i_width = 176;
269 p_sys->i_height = 144;
272 p_sys->i_width = 352;
273 p_sys->i_height = 288;
276 p_sys->i_width = 640;
277 p_sys->i_height = 480;
280 p_sys->i_width = 704;
281 p_sys->i_height = 576;
285 p_sys->b_auto = true;
292 GfxMode( p_sys->i_tty );
294 /* Set keyboard settings */
295 if( tcgetattr(0, &p_vout->p_sys->old_termios) == -1 )
297 msg_Err( p_vout, "tcgetattr failed" );
300 if( tcgetattr(0, &new_termios) == -1 )
302 msg_Err( p_vout, "tcgetattr failed" );
305 /* new_termios.c_lflag &= ~ (ICANON | ISIG);
306 new_termios.c_lflag |= (ECHO | ECHOCTL); */
307 new_termios.c_lflag &= ~ (ICANON);
308 new_termios.c_lflag &= ~(ECHO | ECHOCTL);
309 new_termios.c_iflag = 0;
310 new_termios.c_cc[VMIN] = 1;
311 new_termios.c_cc[VTIME] = 0;
313 if( tcsetattr(0, TCSAFLUSH, &new_termios) == -1 )
315 msg_Err( p_vout, "tcsetattr failed" );
318 ioctl( p_sys->i_tty, VT_RELDISP, VT_ACKACQ );
320 /* Set-up tty signal handler to be aware of tty changes */
321 memset( &sig_tty, 0, sizeof( sig_tty ) );
322 sig_tty.sa_handler = SwitchDisplay;
323 sigemptyset( &sig_tty.sa_mask );
324 if( sigaction( SIGUSR1, &sig_tty, &p_vout->p_sys->sig_usr1 ) ||
325 sigaction( SIGUSR2, &sig_tty, &p_vout->p_sys->sig_usr2 ) )
327 msg_Err( p_vout, "cannot set signal handler (%m)" );
328 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
329 TextMode( p_sys->i_tty );
330 free( p_vout->p_sys );
334 /* Set-up tty according to new signal handler */
335 if( -1 == ioctl( p_sys->i_tty, VT_GETMODE, &p_vout->p_sys->vt_mode ) )
337 msg_Err( p_vout, "cannot get terminal mode (%m)" );
338 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
339 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
340 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
341 TextMode( p_sys->i_tty );
342 free( p_vout->p_sys );
345 memcpy( &vt_mode, &p_vout->p_sys->vt_mode, sizeof( vt_mode ) );
346 vt_mode.mode = VT_PROCESS;
348 vt_mode.relsig = SIGUSR1;
349 vt_mode.acqsig = SIGUSR2;
351 if( -1 == ioctl( p_sys->i_tty, VT_SETMODE, &vt_mode ) )
353 msg_Err( p_vout, "cannot set terminal mode (%m)" );
354 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
355 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
356 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
357 TextMode( p_sys->i_tty );
358 free( p_vout->p_sys );
363 if( OpenDisplay( p_vout ) )
367 ioctl( p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
368 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
369 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
370 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
371 TextMode( p_sys->i_tty );
373 free( p_vout->p_sys );
381 /*****************************************************************************
382 * Destroy: destroy FB video thread output method
383 *****************************************************************************
384 * Terminate an output method created by Create
385 *****************************************************************************/
386 static void Destroy( vlc_object_t *p_this )
388 vout_thread_t *p_vout = (vout_thread_t *)p_this;
390 CloseDisplay( p_vout );
392 if( p_vout->p_sys->b_tty )
394 /* Reset the terminal */
395 ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
397 /* Remove signal handlers */
398 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
399 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
401 /* Reset the keyboard state */
402 tcsetattr( 0, 0, &p_vout->p_sys->old_termios );
404 /* Return to text mode */
405 TextMode( p_vout->p_sys->i_tty );
408 /* Destroy structure */
409 free( p_vout->p_sys );
412 /*****************************************************************************
413 * NewPicture: allocate a picture
414 *****************************************************************************
415 * Returns 0 on success, -1 otherwise
416 *****************************************************************************/
417 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
419 /* We know the chroma, allocate a buffer which will be used
420 * directly by the decoder */
421 p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
422 if( p_pic->p_sys == NULL )
427 /* Fill in picture_t fields */
428 vout_InitPicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
429 p_vout->output.i_width, p_vout->output.i_height,
430 p_vout->output.i_aspect );
432 p_pic->p_sys->p_data = malloc( p_vout->p_sys->i_page_size );
433 if( !p_pic->p_sys->p_data )
435 free( p_pic->p_sys );
440 p_pic->p->p_pixels = (uint8_t*) p_pic->p_sys->p_data;
442 p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
443 p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
444 p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
446 if( p_vout->p_sys->var_info.xres_virtual )
448 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
449 * p_vout->p_sys->i_bytes_per_pixel;
453 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
454 * p_vout->p_sys->i_bytes_per_pixel;
457 p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
458 * p_vout->p_sys->i_bytes_per_pixel;
464 /*****************************************************************************
465 * FreePicture: destroy a picture allocated with NewPicture
466 *****************************************************************************
467 * Destroy Image AND associated data.
468 *****************************************************************************/
469 static void FreePicture( vout_thread_t *p_vout, picture_t *p_pic )
471 free( p_pic->p_sys->p_data );
472 free( p_pic->p_sys );
476 /*****************************************************************************
477 * Init: initialize framebuffer video thread output method
478 *****************************************************************************/
479 static int Init( vout_thread_t *p_vout )
481 vout_sys_t *p_sys = p_vout->p_sys;
483 picture_t *p_pic = NULL;
485 I_OUTPUTPICTURES = 0;
487 p_vout->output.i_width = p_vout->render.i_width;
488 p_vout->output.i_height = p_vout->render.i_height;
489 p_vout->output.i_aspect = p_vout->render.i_aspect;
491 p_vout->fmt_out = p_vout->fmt_in;
492 if( p_sys->i_chroma == 0 )
494 /* Initialize the output structure: RGB with square pixels, whatever
495 * the input format is, since it's the only format we know */
496 switch( p_sys->var_info.bits_per_pixel )
498 case 8: /* FIXME: set the palette */
499 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
501 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
503 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
505 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
507 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
509 msg_Err( p_vout, "unknown screen depth %i",
510 p_vout->p_sys->var_info.bits_per_pixel );
514 if( p_sys->var_info.bits_per_pixel != 8 )
516 p_vout->output.i_rmask = ( (1 << p_sys->var_info.red.length) - 1 )
517 << p_sys->var_info.red.offset;
518 p_vout->output.i_gmask = ( (1 << p_sys->var_info.green.length) - 1 )
519 << p_sys->var_info.green.offset;
520 p_vout->output.i_bmask = ( (1 << p_sys->var_info.blue.length) - 1 )
521 << p_sys->var_info.blue.offset;
526 p_vout->output.i_chroma = p_sys->i_chroma;
528 p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
532 p_vout->render.i_width = p_sys->i_width;
533 p_vout->render.i_height = p_sys->i_height;
535 p_vout->output.i_width = p_vout->fmt_out.i_width = p_sys->i_width;
536 p_vout->output.i_height = p_vout->fmt_out.i_height = p_sys->i_height;
538 /* Assume we have square pixels */
539 if( p_sys->i_aspect < 0 )
541 p_vout->output.i_aspect = ( p_sys->i_width
542 * VOUT_ASPECT_FACTOR ) / p_sys->i_height;
544 else p_vout->output.i_aspect = p_sys->i_aspect;
546 p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_sar_den = 1;
547 p_vout->fmt_out.i_aspect = p_vout->render.i_aspect = p_vout->output.i_aspect;
548 p_vout->fmt_out.i_x_offset= p_vout->fmt_out.i_y_offset = 0;
550 /* Clear the screen */
551 memset( p_sys->p_video, 0, p_sys->i_page_size );
553 if( !p_sys->b_hw_accel )
555 /* Try to initialize up to MAX_DIRECTBUFFERS direct buffers */
556 while( I_OUTPUTPICTURES < MAX_DIRECTBUFFERS )
560 /* Find an empty picture slot */
561 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
563 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
565 p_pic = p_vout->p_picture + i_index;
570 /* Allocate the picture */
571 if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
576 p_pic->i_status = DESTROYED_PICTURE;
577 p_pic->i_type = DIRECT_PICTURE;
579 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
586 /* Try to initialize 1 direct buffer */
589 /* Find an empty picture slot */
590 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
592 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
594 p_pic = p_vout->p_picture + i_index;
599 /* Allocate the picture */
605 /* We know the chroma, allocate a buffer which will be used
606 * directly by the decoder */
607 p_pic->p->p_pixels = p_vout->p_sys->p_video;
608 p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
609 p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
610 p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
612 if( p_vout->p_sys->var_info.xres_virtual )
614 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
615 * p_vout->p_sys->i_bytes_per_pixel;
619 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
620 * p_vout->p_sys->i_bytes_per_pixel;
623 p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
624 * p_vout->p_sys->i_bytes_per_pixel;
626 p_pic->i_status = DESTROYED_PICTURE;
627 p_pic->i_type = DIRECT_PICTURE;
629 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
637 /*****************************************************************************
638 * End: terminate framebuffer video thread output method
639 *****************************************************************************/
640 static void End( vout_thread_t *p_vout )
642 if( !p_vout->p_sys->b_hw_accel )
646 /* Free the direct buffers we allocated */
647 for( i_index = I_OUTPUTPICTURES ; i_index ; )
650 FreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
654 /* Clear the screen */
655 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
658 /*****************************************************************************
659 * Control: control facility for the vout
660 *****************************************************************************/
661 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
666 return vout_vaControlDefault( p_vout, i_query, args );
670 /*****************************************************************************
671 * Manage: handle FB events
672 *****************************************************************************
673 * This function should be called regularly by video output thread. It manages
674 * console events. It returns a non null value on error.
675 *****************************************************************************/
676 static int Manage( vout_thread_t *p_vout )
681 if ( read(0, &buf, 1) == 1)
686 vlc_object_kill( p_vout->p_libvlc );
698 if( p_vout->i_changes & VOUT_SIZE_CHANGE )
700 msg_Dbg( p_vout, "reinitializing framebuffer screen" );
701 p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
703 /* Destroy XImages to change their size */
706 /* Recreate XImages. If SysInit failed, the thread can't go on. */
709 msg_Err( p_vout, "cannot reinit framebuffer screen" );
714 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
717 /* Tell the video output thread that it will need to rebuild YUV
718 * tables. This is needed since conversion buffer size may have changed */
719 p_vout->i_changes |= VOUT_YUV_CHANGE;
726 /*****************************************************************************
727 * Display: displays previously rendered output
728 *****************************************************************************
729 * This function send the currently rendered image to FB image, waits until
730 * it is displayed and switch the two rendering buffers, preparing next frame.
731 *****************************************************************************/
732 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
735 /* swap the two Y offsets if the drivers supports panning */
736 if( p_vout->p_sys->b_pan )
738 p_vout->p_sys->var_info.yoffset = 0;
739 /*p_vout->p_sys->var_info.yoffset = p_vout->p_sys->var_info.yres; */
741 /* the X offset should be 0, but who knows ...
742 * some other app might have played with the framebuffer */
743 p_vout->p_sys->var_info.xoffset = 0;
747 ioctl( p_vout->p_sys->i_fd,
748 FBIOPAN_DISPLAY, &p_vout->p_sys->var_info );
753 if( !p_vout->p_sys->b_hw_accel )
755 vlc_memcpy( p_vout->p_sys->p_video, p_pic->p->p_pixels,
756 p_vout->p_sys->i_page_size );
761 static void SetPalette( vout_thread_t *p_vout, uint16_t *red, uint16_t *green,
762 uint16_t *blue, uint16_t *transp )
764 struct fb_cmap cmap = { 0, 256, red, green, blue, transp };
766 ioctl( p_vout->p_sys->i_fd, FBIOPUTCMAP, &cmap );
770 /* following functions are local */
772 /*****************************************************************************
773 * OpenDisplay: initialize framebuffer
774 *****************************************************************************/
775 static int OpenDisplay( vout_thread_t *p_vout )
777 vout_sys_t *p_sys = (vout_sys_t *) p_vout->p_sys;
778 char *psz_device; /* framebuffer device path */
779 struct fb_fix_screeninfo fix_info; /* framebuffer fix information */
781 /* Open framebuffer device */
782 if( !(psz_device = config_GetPsz( p_vout, FB_DEV_VAR )) )
784 msg_Err( p_vout, "don't know which fb device to open" );
788 p_sys->i_fd = open( psz_device, O_RDWR);
789 if( p_sys->i_fd == -1 )
791 msg_Err( p_vout, "cannot open %s (%m)", psz_device );
798 /* Get framebuffer device information */
799 if( ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->var_info ) )
801 msg_Err( p_vout, "cannot get fb info (%m)" );
802 close( p_sys->i_fd );
806 memcpy( &p_sys->old_info, &p_sys->var_info,
807 sizeof( struct fb_var_screeninfo ) );
809 /* Get some info on the framebuffer itself */
812 p_sys->var_info.xres = p_sys->var_info.xres_virtual = p_sys->i_width;
813 p_sys->var_info.yres = p_sys->var_info.yres_virtual = p_sys->i_height;
814 p_vout->fmt_out.i_width = p_sys->i_width;
815 p_vout->fmt_out.i_height = p_sys->i_height;
818 /* Set some attributes */
819 p_sys->var_info.activate = p_sys->b_tty
820 ? FB_ACTIVATE_NXTOPEN
822 p_sys->var_info.xoffset = 0;
823 p_sys->var_info.yoffset = 0;
825 if( ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->var_info ) )
827 msg_Err( p_vout, "cannot set fb info (%m)" );
828 close( p_sys->i_fd );
832 /* Get some information again, in the definitive configuration */
833 if( ioctl( p_sys->i_fd, FBIOGET_FSCREENINFO, &fix_info )
834 || ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->var_info ) )
836 msg_Err( p_vout, "cannot get additional fb info (%m)" );
838 /* Restore fb config */
839 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
841 close( p_sys->i_fd );
845 /* If the fb has limitations on mode change,
846 * then keep the resolution of the fb */
847 if( (p_sys->i_height != p_sys->var_info.yres) ||
848 (p_sys->i_width != p_sys->var_info.xres) )
850 p_sys->b_auto = true;
852 "using framebuffer native resolution instead of requested (%ix%i)",
853 p_sys->i_width, p_sys->i_height );
855 p_sys->i_height = p_sys->var_info.yres;
856 p_sys->i_width = p_sys->var_info.xres_virtual
857 ? p_sys->var_info.xres_virtual
858 : p_sys->var_info.xres;
860 /* FIXME: if the image is full-size, it gets cropped on the left
861 * because of the xres / xres_virtual slight difference */
862 msg_Dbg( p_vout, "%ix%i (virtual %ix%i) (request %ix%i)",
863 p_sys->var_info.xres, p_sys->var_info.yres,
864 p_sys->var_info.xres_virtual,
865 p_sys->var_info.yres_virtual,
866 p_sys->i_width, p_sys->i_height );
868 p_sys->p_palette = NULL;
869 p_sys->b_pan = ( fix_info.ypanstep || fix_info.ywrapstep );
871 switch( p_sys->var_info.bits_per_pixel )
874 p_sys->p_palette = malloc( 8 * 256 * sizeof( uint16_t ) );
875 if( !p_sys->p_palette )
877 msg_Err( p_vout, "out of memory" );
879 /* Restore fb config */
880 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
882 close( p_sys->i_fd );
885 p_sys->fb_cmap.start = 0;
886 p_sys->fb_cmap.len = 256;
887 p_sys->fb_cmap.red = p_sys->p_palette;
888 p_sys->fb_cmap.green = p_sys->p_palette + 256 * sizeof( uint16_t );
889 p_sys->fb_cmap.blue = p_sys->p_palette + 2 * 256 * sizeof( uint16_t );
890 p_sys->fb_cmap.transp = p_sys->p_palette + 3 * 256 * sizeof( uint16_t );
892 /* Save the colormap */
893 ioctl( p_sys->i_fd, FBIOGETCMAP, &p_sys->fb_cmap );
895 p_sys->i_bytes_per_pixel = 1;
900 p_sys->i_bytes_per_pixel = 2;
904 p_sys->i_bytes_per_pixel = 3;
908 p_sys->i_bytes_per_pixel = 4;
912 msg_Err( p_vout, "screen depth %d is not supported",
913 p_sys->var_info.bits_per_pixel );
915 /* Restore fb config */
916 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
918 close( p_sys->i_fd );
922 p_sys->i_page_size = p_sys->i_width * p_sys->i_height *
923 p_sys->i_bytes_per_pixel;
925 /* Map a framebuffer at the beginning */
926 p_sys->p_video = mmap( 0, p_sys->i_page_size,
927 PROT_READ | PROT_WRITE, MAP_SHARED,
930 if( p_sys->p_video == ((void*)-1) )
932 msg_Err( p_vout, "cannot map video memory (%m)" );
934 if( p_sys->var_info.bits_per_pixel == 8 )
936 free( p_sys->p_palette );
937 p_sys->p_palette = NULL;
940 /* Restore fb config */
941 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
943 close( p_sys->i_fd );
947 msg_Dbg( p_vout, "framebuffer type=%d, visual=%d, ypanstep=%d, "
948 "ywrap=%d, accel=%d", fix_info.type, fix_info.visual,
949 fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel );
953 /*****************************************************************************
954 * CloseDisplay: terminate FB video thread output method
955 *****************************************************************************/
956 static void CloseDisplay( vout_thread_t *p_vout )
959 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
961 /* Restore palette */
962 if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
964 ioctl( p_vout->p_sys->i_fd,
965 FBIOPUTCMAP, &p_vout->p_sys->fb_cmap );
966 free( p_vout->p_sys->p_palette );
967 p_vout->p_sys->p_palette = NULL;
970 /* Restore fb config */
971 ioctl( p_vout->p_sys->i_fd,
972 FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
975 close( p_vout->p_sys->i_fd );
978 /*****************************************************************************
979 * SwitchDisplay: VT change signal handler
980 *****************************************************************************
981 * This function activates or deactivates the output of the thread. It is
982 * called by the VT driver, on terminal change.
983 *****************************************************************************/
984 static void SwitchDisplay( int i_signal )
987 vout_thread_t *p_vout;
989 vlc_mutex_lock( &p_vout_bank->lock );
991 /* XXX: only test the first video output */
992 if( p_vout_bank->i_count )
994 p_vout = p_vout_bank->pp_vout[0];
998 case SIGUSR1: /* vt has been released */
999 p_vout->b_active = 0;
1000 ioctl( p_sys->i_tty, VT_RELDISP, 1 );
1002 case SIGUSR2: /* vt has been acquired */
1003 p_vout->b_active = 1;
1004 ioctl( p_sys->i_tty, VT_RELDISP, VT_ACTIVATE );
1005 /* handle blanking */
1006 vlc_mutex_lock( &p_vout->change_lock );
1007 p_vout->i_changes |= VOUT_SIZE_CHANGE;
1008 vlc_mutex_unlock( &p_vout->change_lock );
1013 vlc_mutex_unlock( &p_vout_bank->lock );
1017 /*****************************************************************************
1018 * TextMode and GfxMode : switch tty to text/graphic mode
1019 *****************************************************************************
1020 * These functions toggle the tty mode.
1021 *****************************************************************************/
1022 static void TextMode( int i_tty )
1024 /* return to text mode */
1025 if( -1 == ioctl(i_tty, KDSETMODE, KD_TEXT) )
1027 /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_TEXT" );*/
1031 static void GfxMode( int i_tty )
1033 /* switch to graphic mode */
1034 if( -1 == ioctl(i_tty, KDSETMODE, KD_GRAPHICS) )
1036 /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_GRAPHICS" );*/