Fix a segfault (buffer overflow for win32 only).
[vlc.git] / modules / video_output / omapfb.c
1 /*****************************************************************************
2 * omapfb.c : omap framebuffer plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2008-2009 the VideoLAN team
5 * $Id$
6 *
7 * Authors: Antoine Lejeune <phytos @ videolan.org>
8 *          Based on fb.c and work of Siarhei Siamashka on mplayer for Maemo
9 *          Needs a recent omapfb.h to compile
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
25
26 #ifdef HAVE_CONFIG_H
27 # include "config.h"
28 #endif
29
30 #include <errno.h>                                                 /* ENOMEM */
31 #include <fcntl.h>                                                 /* open() */
32 #include <unistd.h>                                               /* close() */
33
34 #include <sys/ioctl.h>
35 #include <sys/mman.h>                                              /* mmap() */
36
37 #include <linux/fb.h>
38 #include <asm/arch-omap/omapfb.h>
39
40 /* Embedded window handling */
41 #include <X11/Xlib.h>
42 #include <X11/Xutil.h>
43 #include <X11/keysym.h>
44
45 #ifdef HAVE_OSSO
46 #include <libosso.h>
47 #endif
48
49 #include <vlc_common.h>
50 #include <vlc_plugin.h>
51 #include <vlc_keys.h>
52 #include <vlc_vout.h>
53 #include <vlc_window.h>
54 #include <vlc_playlist.h>
55
56 /*****************************************************************************
57 * Local prototypes
58 *****************************************************************************/
59 static int  Create           ( vlc_object_t * );
60 static void Destroy          ( vlc_object_t * );
61
62 static int  Init             ( vout_thread_t * );
63 static void End              ( vout_thread_t * );
64 static int  Manage           ( vout_thread_t * );
65 static void DisplayVideo     ( vout_thread_t *, picture_t * );
66 static int  Control          ( vout_thread_t *, int, va_list );
67
68 static void FreePicture      ( vout_thread_t *, picture_t * );
69
70 static int  OpenDisplay      ( vout_thread_t * );
71 static void CloseDisplay     ( vout_thread_t * );
72 static void UpdateScreen     ( vout_thread_t *,
73                                int, int, int, int, int, int, int );
74
75 static int  InitWindow       ( vout_thread_t * );
76 static void CreateWindow     ( vout_sys_t * );
77 static void ToggleFullScreen ( vout_thread_t * );
78
79 #ifdef HAVE_OSSO
80 static const int i_backlight_on_interval = 300;
81 #endif
82
83 /*****************************************************************************
84  * Module descriptor
85  *****************************************************************************/
86 #define FB_DEV_VAR "omapfbdev"
87
88 #define DEVICE_TEXT N_("OMAP Framebuffer device")
89 #define DEVICE_LONGTEXT N_( \
90     "OMAP Framebuffer device to use for rendering (usually /dev/fb0).")
91
92 #define CHROMA_TEXT N_("Chroma used.")
93 #define CHROMA_LONGTEXT N_( \
94     "Force use of a specific chroma for output. Default is Y420 (specific to N770/N8xx hardware)." )
95
96 #define OVERLAY_TEXT N_("Embed the overlay")
97 #define OVERLAY_LONGTEXT N_( \
98     "Embed the framebuffer overlay into a X11 window" )
99
100 vlc_module_begin();
101     set_shortname( "OMAP framebuffer" );
102     set_category( CAT_VIDEO );
103     set_subcategory( SUBCAT_VIDEO_VOUT );
104     add_file( FB_DEV_VAR, "/dev/fb0", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
105               false )
106     add_string( "omap-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
107                 true )
108     add_bool( "omap-embedded", true, NULL, OVERLAY_TEXT, OVERLAY_LONGTEXT,
109                  true )
110     set_description( N_("OMAP framebuffer video output") );
111     set_capability( "video output", 200 );
112     set_callbacks( Create, Destroy );
113 vlc_module_end();
114
115 /*****************************************************************************
116  * omap_window_t: simple structure with the geometry of a window
117  *****************************************************************************/
118 struct omap_window_t
119 {
120     uint32_t i_x;
121     uint32_t i_y;
122     uint32_t i_width;
123     uint32_t i_height;
124 };
125
126 /*****************************************************************************
127 * vout_sys_t: video output omap framebuffer method descriptor
128  *****************************************************************************
129  * This structure is part of the video output thread descriptor.
130  * It describes the FB specific properties of an output thread.
131  *****************************************************************************/
132 struct vout_sys_t
133 {
134     /* Framebuffer information */
135     int                         i_fd;                       /* device handle */
136     struct fb_var_screeninfo    fb_vinfo;        /* current mode information */
137     struct fb_fix_screeninfo    fb_finfo;
138     struct omapfb_caps          caps;
139     bool                        b_tearsync;
140
141     /* Window information */
142     struct omap_window_t output_window;    /* Size of the real output window */
143     struct omap_window_t main_window;  /* Size of the area we got to display */
144     struct omap_window_t embedded_window;     /* Size of the embedded window */
145
146     /* Video information */
147     uint32_t             i_video_width;                       /* video width */
148     uint32_t             i_video_height;                     /* video height */
149     vlc_fourcc_t         i_chroma;
150     int                  i_color_format;                   /* OMAPFB_COLOR_* */
151     bool                 b_embed;
152     bool                 b_video_enabled;        /* Video must be displayed? */
153     picture_t           *p_output_picture;
154
155     /* Video memory */
156     uint8_t    *p_video;                                      /* base adress */
157     uint8_t    *p_center;                                   /* output adress */
158     size_t      i_page_size;                                    /* page size */
159     int         i_bytes_per_pixel;                /* Bytes used by one pixel */
160     int         i_line_len;                   /* Length of one line in bytes */
161
162     /* X11 */
163     Display   *p_display;
164     vout_window_t *owner_window;
165     Window     window;
166     mtime_t    i_time_button_last_pressed;         /* To detect double click */
167
168     /* Dummy memory */
169     int        i_null_fd;
170     uint8_t   *p_null;
171
172 #ifdef HAVE_OSSO
173     osso_context_t      *p_octx;
174     int                 i_backlight_on_counter;
175 #endif
176 };
177
178 /*****************************************************************************
179  * Create: allocates omapfb video thread output method
180  *****************************************************************************
181  * This function allocates and initializes a FB vout method.
182  *****************************************************************************/
183 static int Create( vlc_object_t *p_this )
184 {
185     vout_thread_t *p_vout = (vout_thread_t *)p_this;
186     vout_sys_t    *p_sys;
187
188     if( p_vout->fmt_in.i_chroma != VLC_CODEC_I420 &&
189         p_vout->fmt_in.i_chroma != VLC_CODEC_YV12 )
190         return VLC_EGENERIC;
191
192     /* Allocate instance and initialize some members */
193     p_vout->p_sys = p_sys = calloc( 1, sizeof( vout_sys_t ) );
194     if( p_vout->p_sys == NULL )
195         return VLC_ENOMEM;
196
197     p_vout->pf_init = Init;
198     p_vout->pf_end = End;
199     p_vout->pf_manage = Manage;
200     p_vout->pf_render = NULL;
201     p_vout->pf_display = DisplayVideo;
202     p_vout->pf_control = Control;
203
204     p_sys->b_embed = var_CreateGetInteger( p_vout, "omap-embedded" );
205     p_sys->b_video_enabled = true;
206
207     if( OpenDisplay( p_vout ) )
208     {
209         free( p_vout->p_sys );
210         return VLC_EGENERIC;
211     }
212
213     if( InitWindow( p_vout ) )
214     {
215         free( p_vout->p_sys );
216         return VLC_EGENERIC;
217     }
218
219 #ifdef HAVE_OSSO
220     p_vout->p_sys->i_backlight_on_counter = i_backlight_on_interval;
221     p_vout->p_sys->p_octx = osso_initialize( "vlc", VERSION, 0, NULL );
222     if ( p_vout->p_sys->p_octx == NULL ) {
223         msg_Err( p_vout, "Could not get osso context" );
224     } else {
225         msg_Dbg( p_vout, "Initialized osso context" );
226     }
227 #endif
228
229     return VLC_SUCCESS;
230 }
231
232 /*****************************************************************************
233  * Destroy: destroy omapfb video thread output method
234  *****************************************************************************
235  * Terminate an output method created by Create
236  *****************************************************************************/
237 static void Destroy( vlc_object_t *p_this )
238 {
239     vout_thread_t *p_vout = (vout_thread_t *)p_this;
240
241     CloseDisplay( p_vout );
242
243     if( p_vout->p_sys->b_embed )
244     {
245         vout_ReleaseWindow( p_vout->p_sys->owner_window );
246         if( p_vout->b_fullscreen )
247             XDestroyWindow( p_vout->p_sys->p_display, p_vout->p_sys->window );
248         XCloseDisplay( p_vout->p_sys->p_display );
249     }
250
251 #ifdef HAVE_OSSO
252     if ( p_vout->p_sys->p_octx != NULL ) {
253         msg_Dbg( p_vout, "Deinitializing osso context" );
254         osso_deinitialize( p_vout->p_sys->p_octx );
255     }
256 #endif
257
258     /* Destroy structure */
259     free( p_vout->p_sys );
260 }
261
262
263 /*****************************************************************************
264  * Init: initialize omap framebuffer video thread output method
265  *****************************************************************************/
266 static int Init( vout_thread_t *p_vout )
267 {
268     vout_sys_t *p_sys = (vout_sys_t *)p_vout->p_sys;
269
270     // We want to keep the same aspect
271     p_vout->fmt_out.i_aspect = p_vout->output.i_aspect = p_vout->render.i_aspect;
272     // We ask where the video should be displayed in the video area
273     vout_PlacePicture( p_vout, p_sys->main_window.i_width,
274                        p_sys->main_window.i_height,
275                        &p_sys->output_window.i_x,
276                        &p_sys->output_window.i_y,
277                        &p_sys->output_window.i_width,
278                        &p_sys->output_window.i_height );
279     p_sys->output_window.i_x = ( p_sys->output_window.i_x +
280                                  p_sys->main_window.i_x ) & ~1;
281     p_sys->output_window.i_y = ( p_sys->output_window.i_y +
282                                  p_sys->main_window.i_y ) & ~1;
283
284     // Hardware upscaling better than software
285     if( p_vout->fmt_render.i_width <= p_sys->main_window.i_width &&
286         p_vout->fmt_render.i_height <= p_sys->main_window.i_height )
287     {
288         p_sys->i_video_width =
289         p_vout->output.i_width =
290         p_vout->fmt_out.i_width =
291         p_vout->fmt_out.i_visible_width = p_vout->fmt_render.i_width;
292         p_sys->i_video_height =
293         p_vout->output.i_height =
294         p_vout->fmt_out.i_height =
295         p_vout->fmt_out.i_visible_height = p_vout->fmt_render.i_height;
296     }
297     else
298     {
299         p_sys->i_video_width =
300         p_vout->output.i_width =
301         p_vout->fmt_out.i_width =
302         p_vout->fmt_out.i_visible_width = p_sys->output_window.i_width;
303         p_sys->i_video_height =
304         p_vout->output.i_height =
305         p_vout->fmt_out.i_height =
306         p_vout->fmt_out.i_visible_height = p_sys->output_window.i_height;
307     }
308
309     p_vout->output.i_chroma =
310     p_vout->fmt_out.i_chroma = VLC_CODEC_I420;
311     p_sys->i_color_format = OMAPFB_COLOR_YUV420;
312
313     // place in the framebuffer where we have to write
314     p_sys->p_center = p_sys->p_video + p_sys->output_window.i_x*p_sys->i_bytes_per_pixel
315                       + p_sys->output_window.i_y*p_sys->i_line_len;
316
317     // We get and set a direct render vlc picture
318     I_OUTPUTPICTURES = 0;
319     picture_t *p_pic = NULL;
320     int i_index;
321
322     for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
323     {
324         if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
325         {
326             p_pic = p_vout->p_picture + i_index;
327             break;
328         }
329     }
330
331     /* Allocate the picture */
332     if( p_pic == NULL )
333     {
334         return VLC_EGENERIC;
335     }
336
337     p_sys->p_output_picture = p_pic;
338     p_pic->p->p_pixels = p_vout->p_sys->p_center;
339     p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
340     p_pic->p->i_lines = p_sys->i_video_height;
341     p_pic->p->i_visible_lines = p_sys->i_video_height;
342     p_pic->p->i_pitch = p_sys->i_line_len;
343     p_pic->p->i_visible_pitch = p_sys->i_line_len;
344     p_pic->i_planes = 1;
345     p_pic->i_status = DESTROYED_PICTURE;
346     p_pic->i_type   = DIRECT_PICTURE;
347
348     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
349
350     I_OUTPUTPICTURES++;
351
352     return VLC_SUCCESS;
353 }
354
355 /*****************************************************************************
356  * End: terminate omap framebuffer video thread output method
357  *****************************************************************************/
358 static void End( vout_thread_t *p_vout )
359 {
360     /* Clear the screen */
361     UpdateScreen( p_vout, 0, 0,
362                   p_vout->p_sys->fb_vinfo.xres,
363                   p_vout->p_sys->fb_vinfo.yres,
364                   p_vout->p_sys->fb_vinfo.xres,
365                   p_vout->p_sys->fb_vinfo.yres,
366                   OMAPFB_COLOR_RGB565 );
367 }
368
369 /*****************************************************************************
370  * Control: control facility for the vout
371  *****************************************************************************/
372 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
373 {
374     return VLC_EGENERIC;
375 }
376
377 /*****************************************************************************
378 * FreePicture: Destroy the picture and make it free again
379 ******************************************************************************/
380 static void FreePicture( vout_thread_t *p_vout, picture_t *p_pic )
381 {
382     p_pic->p->p_pixels = NULL;
383     p_pic->i_status = FREE_PICTURE;
384 }
385
386 /*****************************************************************************
387  * Manage: handle omapfb events
388  *****************************************************************************
389  * This function should be called regularly by video output thread.
390  *****************************************************************************/
391 static int Manage( vout_thread_t *p_vout )
392 {
393     XEvent xevent;
394
395     while( XPending( p_vout->p_sys->p_display ) )
396     {
397         XNextEvent( p_vout->p_sys->p_display, &xevent );
398
399         if( xevent.type == ButtonPress &&
400             ((XButtonEvent *)&xevent)->button == Button1 )
401         {
402             /* detect double-clicks */
403             if( ( ((XButtonEvent *)&xevent)->time -
404                     p_vout->p_sys->i_time_button_last_pressed ) < 300 )
405             {
406                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
407             }
408
409             p_vout->p_sys->i_time_button_last_pressed =
410                         ((XButtonEvent *)&xevent)->time;
411         }
412         else if( xevent.type == KeyPress )
413         {
414             KeySym x_key_symbol;
415             vlc_value_t val;
416
417             x_key_symbol = XKeycodeToKeysym( p_vout->p_sys->p_display,
418                                              xevent.xkey.keycode, 0 );
419
420             switch( x_key_symbol )
421             {
422             case XK_Return:
423                 val.i_int = ACTIONID_PLAY_PAUSE; break;
424             case XK_Escape:
425                 val.i_int = ACTIONID_QUIT; break;
426             case XK_Down:
427                 val.i_int = ACTIONID_JUMP_BACKWARD_MEDIUM; break;
428             case XK_Up:
429                 val.i_int = ACTIONID_JUMP_FORWARD_MEDIUM; break;
430             case XK_Right:
431                 val.i_int = ACTIONID_JUMP_FORWARD_SHORT; break;
432             case XK_Left:
433                 val.i_int = ACTIONID_JUMP_BACKWARD_SHORT; break;
434             case XK_F6:
435                 val.i_int = ACTIONID_TOGGLE_FULLSCREEN; break;
436             case XK_F7:
437                 val.i_int = ACTIONID_VOL_UP; break;
438             case XK_F8:
439                 val.i_int = ACTIONID_VOL_DOWN; break;
440             }
441             var_SetInteger( p_vout->p_libvlc, "key-action", val.i_int );
442         }
443         else if( ( xevent.type == VisibilityNotify &&
444                  xevent.xvisibility.state == VisibilityUnobscured ) ||
445                  xevent.type == FocusIn )
446         {
447             p_vout->p_sys->b_video_enabled = true;
448             p_vout->p_sys->p_output_picture->p->p_pixels =
449                 p_vout->p_sys->p_center;
450             XSetInputFocus( p_vout->p_sys->p_display, p_vout->p_sys->window,
451                             RevertToParent, CurrentTime );
452         }
453         else if( ( xevent.type == VisibilityNotify &&
454                  xevent.xvisibility.state != VisibilityUnobscured ) ||
455                  xevent.type == FocusOut || xevent.type == UnmapNotify )
456         {
457             UpdateScreen( p_vout, 0, 0,
458                           p_vout->p_sys->fb_vinfo.xres,
459                           p_vout->p_sys->fb_vinfo.yres,
460                           p_vout->p_sys->fb_vinfo.xres,
461                           p_vout->p_sys->fb_vinfo.yres,
462                           OMAPFB_COLOR_RGB565 );
463             p_vout->p_sys->b_video_enabled = false;
464             p_vout->p_sys->p_output_picture->p->p_pixels =
465                 p_vout->p_sys->p_null;
466          }
467     }
468
469     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
470     {
471         /* Update the object variable and trigger callback */
472         var_SetBool( p_vout, "fullscreen", !p_vout->b_fullscreen );
473
474         if( p_vout->p_sys->b_embed )
475             ToggleFullScreen( p_vout );
476         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
477     }
478
479     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
480     {
481         FreePicture( p_vout, p_vout->p_sys->p_output_picture );
482         if( Init( p_vout ) )
483         {
484             msg_Err( p_vout, "cannot reinit framebuffer screen" );
485             return VLC_EGENERIC;
486         }
487     }
488
489
490 #ifdef HAVE_OSSO
491     if ( p_vout->p_sys->p_octx != NULL ) {
492         if ( p_vout->p_sys->i_backlight_on_counter == i_backlight_on_interval ) {
493             if ( osso_display_blanking_pause( p_vout->p_sys->p_octx ) != OSSO_OK ) {
494                 msg_Err( p_vout, "Could not disable backlight blanking" );
495         } else {
496                 msg_Dbg( p_vout, "Backlight blanking disabled" );
497             }
498             p_vout->p_sys->i_backlight_on_counter = 0;
499         } else {
500             p_vout->p_sys->i_backlight_on_counter ++;
501         }
502     }
503 #endif
504
505     return VLC_SUCCESS;
506 }
507
508 /*****************************************************************************
509  * DisplayVideo: displays previously rendered output
510  *****************************************************************************
511  * This function update the screen resulting in the display of the last
512  * rendered picture.
513  *****************************************************************************/
514 static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
515 {
516     VLC_UNUSED( p_pic );
517
518     if( !p_vout->p_sys->b_video_enabled )
519         return;
520
521     UpdateScreen( p_vout,
522                   p_vout->p_sys->output_window.i_x,
523                   p_vout->p_sys->output_window.i_y,
524                   p_vout->p_sys->i_video_width,
525                   p_vout->p_sys->i_video_height,
526                   p_vout->p_sys->output_window.i_width,
527                   p_vout->p_sys->output_window.i_height,
528                   p_vout->p_sys->i_color_format );
529
530     // Wait for the window to be fully displayed
531     ioctl( p_vout->p_sys->i_fd, OMAPFB_SYNC_GFX);
532 }
533
534 /*****************************************************************************
535  * OpenDisplay: initialize framebuffer
536  *****************************************************************************/
537 static int OpenDisplay( vout_thread_t *p_vout )
538 {
539     vout_sys_t *p_sys = (vout_sys_t *) p_vout->p_sys;
540     char *psz_device;                             /* framebuffer device path */
541
542     /* Open framebuffer device */
543     if( !(psz_device = config_GetPsz( p_vout, FB_DEV_VAR )) )
544     {
545         msg_Err( p_vout, "don't know which fb device to open" );
546         return VLC_EGENERIC;
547     }
548
549     p_sys->i_fd = open( psz_device, O_RDWR );
550     if( p_sys->i_fd == -1 )
551     {
552         msg_Err( p_vout, "cannot open %s (%m)", psz_device );
553         free( psz_device );
554         return VLC_EGENERIC;
555     }
556     free( psz_device );
557
558     // Get caps, try older interface if needed
559     if( ioctl( p_sys->i_fd, OMAPFB_GET_CAPS, &p_sys->caps ) != 0 )
560     {
561         if( ioctl( p_sys->i_fd, OMAP_IOR( 42, unsigned long ), &p_sys->caps ) != 0 )
562         {
563             msg_Err( p_vout, "OMAPFB_GET_CAPS ioctl failed" );
564             close( p_sys->i_fd );
565             return VLC_EGENERIC;
566         }
567     }
568
569     if( ( p_sys->caps.ctrl & OMAPFB_CAPS_TEARSYNC ) != 0 )
570         p_sys->b_tearsync = true;
571
572     if( ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->fb_vinfo ) )
573     {
574         msg_Err( p_vout, "Can't get VSCREENINFO: %s", strerror(errno) );
575         close( p_sys->i_fd );
576         return VLC_EGENERIC;
577     }
578     if( ioctl( p_sys->i_fd, FBIOGET_FSCREENINFO, &p_sys->fb_finfo ) )
579     {
580         msg_Err( p_vout, "Can't get FSCREENINFO: %s", strerror(errno) );
581         close( p_sys->i_fd );
582         return VLC_EGENERIC;
583     }
584
585     p_sys->i_bytes_per_pixel = 2;
586     p_sys->i_page_size = p_sys->fb_finfo.smem_len;
587     p_sys->i_line_len = p_sys->fb_finfo.line_length;
588
589     if( (p_sys->p_video = (uint8_t *)mmap( 0, p_sys->i_page_size, PROT_READ | PROT_WRITE, MAP_SHARED,
590                                             p_sys->i_fd, 0 )) == MAP_FAILED )
591     {
592         msg_Err( p_vout, "Can't mmap: %s", strerror(errno) );
593         close( p_sys->i_fd );
594         return VLC_EGENERIC;
595     }
596
597     p_sys->p_display = XOpenDisplay( NULL );
598
599     /* Open /dev/null and map it */
600     p_sys->i_null_fd = open( "/dev/zero", O_RDWR );
601     if( p_sys->i_null_fd == -1 )
602     {
603         msg_Err( p_vout, "cannot open /dev/zero (%m)" );
604         munmap( p_sys->p_video, p_sys->i_page_size );
605         close( p_sys->i_fd );
606         return VLC_EGENERIC;
607     }
608
609     if( (p_sys->p_null = (uint8_t *)mmap( 0, p_sys->i_page_size, PROT_READ | PROT_WRITE,
610                                           MAP_PRIVATE, p_sys->i_null_fd, 0 )) == MAP_FAILED )
611     {
612         msg_Err( p_vout, "Can't mmap 2: %s", strerror(errno) );
613         munmap( p_sys->p_video, p_sys->i_page_size );
614         close( p_sys->i_null_fd );
615         close( p_sys->i_fd );
616         return VLC_EGENERIC;
617     }
618
619     return VLC_SUCCESS;
620 }
621
622 /*****************************************************************************
623  * CloseDisplay: terminate FB video thread output method
624  *****************************************************************************/
625 static void CloseDisplay( vout_thread_t *p_vout )
626 {
627     munmap( p_vout->p_sys->p_video, p_vout->p_sys->i_page_size );
628     munmap( p_vout->p_sys->p_null,  p_vout->p_sys->i_page_size );
629
630     close( p_vout->p_sys->i_fd );
631     close( p_vout->p_sys->i_null_fd );
632 }
633
634 /*****************************************************************************
635  * UpdateScreen: update the screen of the omapfb
636  *****************************************************************************/
637 static void UpdateScreen( vout_thread_t *p_vout, int i_x, int i_y,
638                           int i_width, int i_height,
639                           int i_out_width, int i_out_height, int i_format )
640 {
641     struct omapfb_update_window update;
642     update.x = i_x;
643     update.y = i_y;
644     update.width = i_width;
645     update.height = i_height;
646     update.out_x = i_x;
647     update.out_y = i_y;
648     update.out_width = i_out_width;
649     update.out_height = i_out_height;
650     update.format = i_format;
651     if( p_vout->p_sys->b_tearsync )
652         update.format |= OMAPFB_FORMAT_FLAG_TEARSYNC;
653     ioctl( p_vout->p_sys->i_fd, OMAPFB_UPDATE_WINDOW, &update );
654 }
655
656 /*****************************************************************************
657  * InitWindow: get embedded window and init X11
658  *****************************************************************************/
659 static int InitWindow( vout_thread_t *p_vout )
660 {
661     vout_sys_t *p_sys = (vout_sys_t *)p_vout->p_sys;
662
663     if( p_sys->b_embed )
664     {
665         p_sys->p_display = XOpenDisplay( NULL );
666
667         // Request window from interface
668         p_sys->owner_window =
669             vout_RequestXWindow( p_vout,
670                                 &p_sys->embedded_window.i_x,
671                                 &p_sys->embedded_window.i_y,
672                                 &p_sys->embedded_window.i_width,
673                                 &p_sys->embedded_window.i_height );
674         p_sys->main_window = p_sys->embedded_window;
675
676         // We have to create a new window to get some events
677         // (ButtonPress for example)
678         CreateWindow( p_sys );
679     }
680     else
681     {
682         // No embedding, fullscreen framebuffer overlay with no events handling
683         p_sys->main_window.i_x = p_sys->main_window.i_y = 0;
684         p_sys->main_window.i_width = p_sys->fb_vinfo.xres;
685         p_sys->main_window.i_height = p_sys->fb_vinfo.yres;
686         p_vout->b_fullscreen = true;
687         var_SetBool( p_vout, "fullscreen", p_vout->b_fullscreen );
688     }
689
690     return VLC_SUCCESS;
691 }
692
693 static void CreateWindow( vout_sys_t *p_sys )
694 {
695     XSetWindowAttributes    xwindow_attributes;
696     xwindow_attributes.backing_store = Always;
697     xwindow_attributes.background_pixel =
698         BlackPixel( p_sys->p_display, DefaultScreen(p_sys->p_display) );
699     xwindow_attributes.event_mask = ExposureMask | StructureNotifyMask;
700     p_sys->window = XCreateWindow( p_sys->p_display,
701                                    p_sys->owner_window->handle.xid,
702                                    0, 0,
703                                    p_sys->main_window.i_width,
704                                    p_sys->main_window.i_height,
705                                    0,
706                                    0, InputOutput, 0,
707                                    CWBackingStore | CWBackPixel | CWEventMask,
708                                    &xwindow_attributes );
709
710     XMapWindow( p_sys->p_display, p_sys->window );
711     XSelectInput( p_sys->p_display, p_sys->window,
712                   KeyPressMask | ButtonPressMask | StructureNotifyMask |
713                   VisibilityChangeMask | FocusChangeMask );
714     XSelectInput( p_sys->p_display, p_sys->owner_window->handle.xid,
715                   StructureNotifyMask );
716     XSetInputFocus( p_sys->p_display, p_sys->window, RevertToParent, CurrentTime );
717 }
718
719 static void ToggleFullScreen ( vout_thread_t * p_vout )
720 {
721     p_vout->b_fullscreen = !p_vout->b_fullscreen;
722
723     if( p_vout->b_fullscreen )
724     {
725         msg_Dbg( p_vout, "Entering fullscreen mode" );
726         XReparentWindow( p_vout->p_sys->p_display,
727                          p_vout->p_sys->window,
728                          DefaultRootWindow( p_vout->p_sys->p_display ),
729                          0, 0 );
730
731         XEvent xev;
732
733         /* init X event structure for _NET_WM_FULLSCREEN client msg */
734         xev.xclient.type = ClientMessage;
735         xev.xclient.serial = 0;
736         xev.xclient.send_event = True;
737         xev.xclient.message_type = XInternAtom( p_vout->p_sys->p_display,
738                                                 "_NET_WM_STATE", False );
739         xev.xclient.window = p_vout->p_sys->window;
740         xev.xclient.format = 32;
741         if( p_vout->b_fullscreen )
742             xev.xclient.data.l[0] = 1;
743         else
744             xev.xclient.data.l[0] = 0;
745         xev.xclient.data.l[1] = XInternAtom( p_vout->p_sys->p_display,
746                                             "_NET_WM_STATE_FULLSCREEN", False );
747         xev.xclient.data.l[2] = 0;
748         xev.xclient.data.l[3] = 0;
749         xev.xclient.data.l[4] = 0;
750
751         XSendEvent( p_vout->p_sys->p_display,
752                     DefaultRootWindow( p_vout->p_sys->p_display ), False,
753                     SubstructureRedirectMask | SubstructureNotifyMask, &xev);
754
755         p_vout->p_sys->main_window.i_x = p_vout->p_sys->main_window.i_y = 0;
756         p_vout->p_sys->main_window.i_width = p_vout->p_sys->fb_vinfo.xres;
757         p_vout->p_sys->main_window.i_height = p_vout->p_sys->fb_vinfo.yres;
758     }
759     else
760     {
761         msg_Dbg( p_vout, "Leaving fullscreen mode" );
762
763         XDestroyWindow( p_vout->p_sys->p_display, p_vout->p_sys->window );
764
765         p_vout->p_sys->main_window = p_vout->p_sys->embedded_window;
766         CreateWindow( p_vout->p_sys );
767     }
768
769     XSync( p_vout->p_sys->p_display, False);
770
771     /* signal that the size needs to be updated */
772     p_vout->i_changes |= VOUT_SIZE_CHANGE;
773 }