1 /*****************************************************************************
2 * video_output.c : video output thread
4 * This module describes the programming interface for video output threads.
5 * It includes functions allowing to open a new thread, send pictures to a
6 * thread, and destroy a previously oppened video output thread.
7 *****************************************************************************
8 * Copyright (C) 2000-2007 the VideoLAN team
11 * Authors: Vincent Seguin <seguin@via.ecp.fr>
12 * Gildas Bazin <gbazin@videolan.org>
13 * Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
28 *****************************************************************************/
30 /*****************************************************************************
32 *****************************************************************************/
37 #include <vlc_common.h>
39 #include <stdlib.h> /* free() */
45 #include <vlc_filter.h>
49 #include <vlc_input.h>
50 #include "vout_pictures.h"
51 #include "vout_internal.h"
52 #include "interlacing.h"
53 #include "postprocessing.h"
55 /*****************************************************************************
57 *****************************************************************************/
58 static void *Thread(void *);
59 static void vout_Destructor(vlc_object_t *);
61 /* Object variables callbacks */
62 static int FilterCallback( vlc_object_t *, char const *,
63 vlc_value_t, vlc_value_t, void * );
64 static int VideoFilter2Callback( vlc_object_t *, char const *,
65 vlc_value_t, vlc_value_t, void * );
68 static void PrintVideoFormat(vout_thread_t *, const char *, const video_format_t *);
70 /* Maximum delay between 2 displayed pictures.
71 * XXX it is needed for now but should be removed in the long term.
73 #define VOUT_REDISPLAY_DELAY (INT64_C(80000))
76 * Late pictures having a delay higher than this value are thrashed.
78 #define VOUT_DISPLAY_LATE_THRESHOLD (INT64_C(20000))
80 /* Better be in advance when awakening than late... */
81 #define VOUT_MWAIT_TOLERANCE (INT64_C(1000))
83 /*****************************************************************************
84 * Video Filter2 functions
85 *****************************************************************************/
86 static picture_t *video_new_buffer_filter( filter_t *p_filter )
88 vout_thread_t *p_vout = (vout_thread_t*)p_filter->p_owner;
89 return picture_pool_Get(p_vout->p->private_pool);
92 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
95 picture_Release(p_pic);
98 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
100 p_filter->pf_video_buffer_new = video_new_buffer_filter;
101 p_filter->pf_video_buffer_del = video_del_buffer_filter;
102 p_filter->p_owner = p_data; /* p_vout */
107 /*****************************************************************************
108 * vout_Request: find a video output thread, create one, or destroy one.
109 *****************************************************************************
110 * This function looks for a video output thread matching the current
111 * properties. If not found, it spawns a new one.
112 *****************************************************************************/
113 vout_thread_t *vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
114 video_format_t *p_fmt )
118 /* Video output is no longer used.
119 * TODO: support for reusing video outputs with proper _thread-safe_
120 * reference handling. */
122 vout_CloseAndRelease( p_vout );
126 /* If a video output was provided, lock it, otherwise look for one. */
129 vlc_object_hold( p_vout );
132 /* TODO: find a suitable unused video output */
134 /* If we now have a video output, check it has the right properties */
137 vlc_mutex_lock( &p_vout->p->change_lock );
139 /* We don't directly check for the "vout-filter" variable for obvious
140 * performance reasons. */
141 if( p_vout->p->b_filter_change )
143 char *psz_filter_chain = var_GetString( p_vout, "vout-filter" );
145 if( psz_filter_chain && !*psz_filter_chain )
147 free( psz_filter_chain );
148 psz_filter_chain = NULL;
150 if( p_vout->p->psz_filter_chain && !*p_vout->p->psz_filter_chain )
152 free( p_vout->p->psz_filter_chain );
153 p_vout->p->psz_filter_chain = NULL;
156 if( !psz_filter_chain && !p_vout->p->psz_filter_chain )
158 p_vout->p->b_filter_change = false;
161 free( psz_filter_chain );
164 #warning "FIXME: Check RGB masks in vout_Request"
165 /* FIXME: check RGB masks */
166 if( p_vout->fmt_render.i_chroma != vlc_fourcc_GetCodec( VIDEO_ES, p_fmt->i_chroma ) ||
167 p_vout->fmt_render.i_width != p_fmt->i_width ||
168 p_vout->fmt_render.i_height != p_fmt->i_height ||
169 p_vout->p->b_filter_change )
171 vlc_mutex_unlock( &p_vout->p->change_lock );
173 /* We are not interested in this format, close this vout */
174 vout_CloseAndRelease( p_vout );
175 vlc_object_release( p_vout );
180 /* This video output is cool! Hijack it. */
181 /* Correct aspect ratio on change
182 * FIXME factorize this code with other aspect ration related code */
183 unsigned int i_sar_num;
184 unsigned int i_sar_den;
185 vlc_ureduce( &i_sar_num, &i_sar_den,
186 p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
188 /* What's that, it does not seems to be used correcly everywhere */
189 if( p_vout->i_par_num > 0 && p_vout->i_par_den > 0 )
191 i_sar_num *= p_vout->i_par_den;
192 i_sar_den *= p_vout->i_par_num;
196 if( i_sar_num > 0 && i_sar_den > 0 &&
197 ( i_sar_num != p_vout->fmt_render.i_sar_num ||
198 i_sar_den != p_vout->fmt_render.i_sar_den ) )
200 p_vout->fmt_in.i_sar_num = i_sar_num;
201 p_vout->fmt_in.i_sar_den = i_sar_den;
203 p_vout->fmt_render.i_sar_num = i_sar_num;
204 p_vout->fmt_render.i_sar_den = i_sar_den;
205 p_vout->p->i_changes |= VOUT_ASPECT_CHANGE;
207 vlc_mutex_unlock( &p_vout->p->change_lock );
209 vlc_object_release( p_vout );
214 msg_Dbg( p_this, "reusing provided vout" );
216 spu_Attach( p_vout->p->p_spu, VLC_OBJECT(p_vout), false );
217 vlc_object_detach( p_vout );
219 vlc_object_attach( p_vout, p_this );
220 spu_Attach( p_vout->p->p_spu, VLC_OBJECT(p_vout), true );
226 msg_Dbg( p_this, "no usable vout present, spawning one" );
228 p_vout = vout_Create( p_this, p_fmt );
234 /*****************************************************************************
235 * vout_Create: creates a new video output thread
236 *****************************************************************************
237 * This function creates a new video output thread, and returns a pointer
238 * to its description. On error, it returns NULL.
239 *****************************************************************************/
240 vout_thread_t * (vout_Create)( vlc_object_t *p_parent, video_format_t *p_fmt )
242 vout_thread_t *p_vout; /* thread descriptor */
246 config_chain_t *p_cfg;
250 if( p_fmt->i_width <= 0 || p_fmt->i_height <= 0 )
252 const vlc_fourcc_t i_chroma = vlc_fourcc_GetCodec( VIDEO_ES, p_fmt->i_chroma );
254 vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
255 p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
256 if( p_fmt->i_sar_num <= 0 || p_fmt->i_sar_den <= 0 )
259 /* Allocate descriptor */
260 static const char typename[] = "video output";
261 p_vout = vlc_custom_create( p_parent, sizeof( *p_vout ), VLC_OBJECT_VOUT,
267 p_vout->p = calloc( 1, sizeof(*p_vout->p) );
270 vlc_object_release( p_vout );
275 p_vout->fmt_render = *p_fmt; /* FIXME palette */
276 p_vout->fmt_in = *p_fmt; /* FIXME palette */
278 p_vout->fmt_render.i_chroma =
279 p_vout->fmt_in.i_chroma = i_chroma;
280 video_format_FixRgb( &p_vout->fmt_render );
281 video_format_FixRgb( &p_vout->fmt_in );
283 /* Initialize misc stuff */
284 p_vout->p->i_changes = 0;
285 p_vout->p->b_fullscreen = 0;
286 vout_chrono_Init( &p_vout->p->render, 5, 10000 ); /* Arbitrary initial time */
287 vout_statistic_Init( &p_vout->p->statistic );
288 p_vout->p->b_filter_change = 0;
289 p_vout->p->i_par_num =
290 p_vout->p->i_par_den = 1;
291 p_vout->p->b_picture_empty = false;
292 p_vout->p->displayed.date = VLC_TS_INVALID;
293 p_vout->p->displayed.decoded = NULL;
294 p_vout->p->displayed.timestamp = VLC_TS_INVALID;
295 p_vout->p->displayed.qtype = QTYPE_NONE;
296 p_vout->p->displayed.is_interlaced = false;
298 p_vout->p->step.is_requested = false;
299 p_vout->p->step.last = VLC_TS_INVALID;
300 p_vout->p->step.timestamp = VLC_TS_INVALID;
302 p_vout->p->pause.is_on = false;
303 p_vout->p->pause.date = VLC_TS_INVALID;
305 p_vout->p->decoder_fifo = picture_fifo_New();
306 p_vout->p->decoder_pool = NULL;
308 vlc_mouse_Init( &p_vout->p->mouse );
310 vout_snapshot_Init( &p_vout->p->snapshot );
312 /* Initialize locks */
313 vlc_mutex_init( &p_vout->p->picture_lock );
314 vlc_cond_init( &p_vout->p->picture_wait );
315 vlc_mutex_init( &p_vout->p->change_lock );
316 vlc_mutex_init( &p_vout->p->vfilter_lock );
318 /* Mouse coordinates */
319 var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
320 var_Create( p_vout, "mouse-moved", VLC_VAR_COORDS );
321 var_Create( p_vout, "mouse-clicked", VLC_VAR_COORDS );
322 /* Mouse object (area of interest in a video filter) */
323 var_Create( p_vout, "mouse-object", VLC_VAR_BOOL );
325 /* Attach the new object now so we can use var inheritance below */
326 vlc_object_attach( p_vout, p_parent );
328 /* Initialize subpicture unit */
329 p_vout->p->p_spu = spu_Create( p_vout );
332 spu_Init( p_vout->p->p_spu );
334 spu_Attach( p_vout->p->p_spu, VLC_OBJECT(p_vout), true );
336 p_vout->p->is_late_dropped = var_InheritBool( p_vout, "drop-late-frames" );
338 /* Take care of some "interface/control" related initialisations */
339 vout_IntfInit( p_vout );
341 /* Look for the default filter configuration */
342 p_vout->p->psz_filter_chain =
343 var_CreateGetStringCommand( p_vout, "vout-filter" );
345 /* Apply video filter2 objects on the first vout */
347 var_CreateGetStringCommand( p_vout, "video-filter" );
349 var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
350 p_vout->p->p_vf2_chain = filter_chain_New( p_vout, "video filter2",
351 false, video_filter_buffer_allocation_init, NULL, p_vout );
353 /* Choose the video output module */
354 if( !p_vout->p->psz_filter_chain || !*p_vout->p->psz_filter_chain )
360 psz_parser = strdup( p_vout->p->psz_filter_chain );
361 p_vout->p->title.show = false;
364 /* Create the vout thread */
365 char *psz_tmp = config_ChainCreate( &psz_name, &p_cfg, psz_parser );
368 p_vout->p->p_cfg = p_cfg;
370 /* Create a few object variables for interface interaction */
371 var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
372 text.psz_string = _("Filters");
373 var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
374 var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
377 vout_InitInterlacingSupport( p_vout, p_vout->p->displayed.is_interlaced );
379 if( p_vout->p->psz_filter_chain && *p_vout->p->psz_filter_chain )
382 if( asprintf( &psz_tmp, "%s,none", psz_name ) < 0 )
383 psz_tmp = strdup( "" );
387 p_vout->p->psz_module_name = psz_name;
390 vlc_object_set_destructor( p_vout, vout_Destructor );
393 vlc_cond_init( &p_vout->p->change_wait );
394 if( vlc_clone( &p_vout->p->thread, Thread, p_vout,
395 VLC_THREAD_PRIORITY_OUTPUT ) )
397 spu_Attach( p_vout->p->p_spu, VLC_OBJECT(p_vout), false );
398 spu_Destroy( p_vout->p->p_spu );
399 p_vout->p->p_spu = NULL;
400 vlc_object_release( p_vout );
404 vlc_mutex_lock( &p_vout->p->change_lock );
405 while( !p_vout->p->b_ready )
406 { /* We are (ab)using the same condition in opposite directions for
407 * b_ready and b_done. This works because of the strict ordering. */
408 assert( !p_vout->p->b_done );
409 vlc_cond_wait( &p_vout->p->change_wait, &p_vout->p->change_lock );
411 vlc_mutex_unlock( &p_vout->p->change_lock );
413 if( p_vout->p->b_error )
415 msg_Err( p_vout, "video output creation failed" );
416 vout_CloseAndRelease( p_vout );
423 /*****************************************************************************
424 * vout_Close: Close a vout created by vout_Create.
425 *****************************************************************************
426 * You HAVE to call it on vout created by vout_Create before vlc_object_release.
427 * You should NEVER call it on vout not obtained through vout_Create
428 * (like with vout_Request or vlc_object_find.)
429 * You can use vout_CloseAndRelease() as a convenience method.
430 *****************************************************************************/
431 void vout_Close( vout_thread_t *p_vout )
435 vlc_mutex_lock( &p_vout->p->change_lock );
436 p_vout->p->b_done = true;
437 vlc_cond_signal( &p_vout->p->change_wait );
438 vlc_mutex_unlock( &p_vout->p->change_lock );
440 vout_snapshot_End( &p_vout->p->snapshot );
442 vlc_join( p_vout->p->thread, NULL );
446 static void vout_Destructor( vlc_object_t * p_this )
448 vout_thread_t *p_vout = (vout_thread_t *)p_this;
450 /* Make sure the vout was stopped first */
451 //assert( !p_vout->p_module );
453 free( p_vout->p->psz_module_name );
456 if( p_vout->p->p_spu )
457 spu_Destroy( p_vout->p->p_spu );
459 vout_chrono_Clean( &p_vout->p->render );
461 if( p_vout->p->decoder_fifo )
462 picture_fifo_Delete( p_vout->p->decoder_fifo );
463 assert( !p_vout->p->decoder_pool );
465 /* Destroy the locks */
466 vlc_cond_destroy( &p_vout->p->change_wait );
467 vlc_cond_destroy( &p_vout->p->picture_wait );
468 vlc_mutex_destroy( &p_vout->p->picture_lock );
469 vlc_mutex_destroy( &p_vout->p->change_lock );
470 vlc_mutex_destroy( &p_vout->p->vfilter_lock );
473 vout_statistic_Clean( &p_vout->p->statistic );
476 vout_snapshot_Clean( &p_vout->p->snapshot );
479 free( p_vout->p->psz_filter_chain );
480 free( p_vout->p->title.value );
482 config_ChainDestroy( p_vout->p->p_cfg );
489 void vout_ChangePause( vout_thread_t *p_vout, bool b_paused, mtime_t i_date )
491 vlc_mutex_lock( &p_vout->p->change_lock );
493 assert( !p_vout->p->pause.is_on || !b_paused );
495 vlc_mutex_lock( &p_vout->p->picture_lock );
497 if( p_vout->p->pause.is_on )
499 const mtime_t i_duration = i_date - p_vout->p->pause.date;
501 if (p_vout->p->step.timestamp > VLC_TS_INVALID)
502 p_vout->p->step.timestamp += i_duration;
504 p_vout->p->step.last = p_vout->p->step.timestamp;
505 picture_fifo_OffsetDate( p_vout->p->decoder_fifo, i_duration );
506 if (p_vout->p->displayed.decoded)
507 p_vout->p->displayed.decoded->date += i_duration;
509 vlc_cond_signal( &p_vout->p->picture_wait );
510 vlc_mutex_unlock( &p_vout->p->picture_lock );
512 spu_OffsetSubtitleDate( p_vout->p->p_spu, i_duration );
517 p_vout->p->step.last = p_vout->p->step.timestamp;
518 vlc_mutex_unlock( &p_vout->p->picture_lock );
520 p_vout->p->pause.is_on = b_paused;
521 p_vout->p->pause.date = i_date;
523 vlc_mutex_unlock( &p_vout->p->change_lock );
526 void vout_GetResetStatistic( vout_thread_t *p_vout, int *pi_displayed, int *pi_lost )
528 vout_statistic_GetReset( &p_vout->p->statistic,
529 pi_displayed, pi_lost );
532 static void Flush(vout_thread_t *vout, mtime_t date, bool reset, bool below)
534 vlc_assert_locked(&vout->p->picture_lock);
535 vout->p->step.timestamp = VLC_TS_INVALID;
536 vout->p->step.last = VLC_TS_INVALID;
538 picture_t *last = vout->p->displayed.decoded;
541 picture_Release(last);
542 vout->p->displayed.decoded = NULL;
543 } else if (( below && last->date <= date) ||
544 (!below && last->date >= date)) {
545 vout->p->step.is_requested = true;
548 picture_fifo_Flush( vout->p->decoder_fifo, date, below );
551 void vout_Flush(vout_thread_t *vout, mtime_t date)
553 vlc_mutex_lock(&vout->p->picture_lock);
555 Flush(vout, date, false, false);
557 vlc_cond_signal(&vout->p->picture_wait);
558 vlc_mutex_unlock(&vout->p->picture_lock);
561 void vout_Reset(vout_thread_t *vout)
563 vlc_mutex_lock(&vout->p->picture_lock);
565 Flush(vout, INT64_MAX, true, true);
566 if (vout->p->decoder_pool)
567 picture_pool_NonEmpty(vout->p->decoder_pool, true);
568 vout->p->pause.is_on = false;
569 vout->p->pause.date = mdate();
571 vlc_cond_signal( &vout->p->picture_wait );
572 vlc_mutex_unlock(&vout->p->picture_lock);
575 void vout_FixLeaks( vout_thread_t *vout )
577 vlc_mutex_lock(&vout->p->picture_lock);
579 picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
581 picture = picture_pool_Get(vout->p->decoder_pool);
585 picture_Release(picture);
586 /* Not all pictures has been displayed yet or some are
588 vlc_mutex_unlock(&vout->p->picture_lock);
592 /* There is no reason that no pictures are available, force one
593 * from the pool, becarefull with it though */
594 msg_Err(vout, "pictures leaked, trying to workaround");
597 picture_pool_NonEmpty(vout->p->decoder_pool, false);
599 vlc_cond_signal(&vout->p->picture_wait);
600 vlc_mutex_unlock(&vout->p->picture_lock);
602 void vout_NextPicture(vout_thread_t *vout, mtime_t *duration)
604 vlc_mutex_lock(&vout->p->picture_lock);
606 vout->p->b_picture_empty = false;
607 vout->p->step.is_requested = true;
609 /* FIXME I highly doubt that it can works with only one cond_t FIXME */
610 vlc_cond_signal(&vout->p->picture_wait);
612 while (vout->p->step.is_requested && !vout->p->b_picture_empty)
613 vlc_cond_wait(&vout->p->picture_wait, &vout->p->picture_lock);
615 if (vout->p->step.last > VLC_TS_INVALID &&
616 vout->p->step.timestamp > vout->p->step.last) {
617 *duration = vout->p->step.timestamp - vout->p->step.last;
618 vout->p->step.last = vout->p->step.timestamp;
623 /* TODO advance subpicture by the duration ... */
624 vlc_mutex_unlock(&vout->p->picture_lock);
627 void vout_DisplayTitle( vout_thread_t *p_vout, const char *psz_title )
631 if( !var_InheritBool( p_vout, "osd" ) )
634 vlc_mutex_lock( &p_vout->p->change_lock );
635 free( p_vout->p->title.value );
636 p_vout->p->title.value = strdup( psz_title );
637 vlc_mutex_unlock( &p_vout->p->change_lock );
640 spu_t *vout_GetSpu( vout_thread_t *p_vout )
642 return p_vout->p->p_spu;
645 /*****************************************************************************
646 * InitThread: initialize video output thread
647 *****************************************************************************
648 * This function is called from Thread and performs the second step of the
649 * initialization. It returns 0 on success. Note that the thread's flag are not
650 * modified inside this function.
651 * XXX You have to enter it with change_lock taken.
652 *****************************************************************************/
653 static int ThreadInit(vout_thread_t *vout)
655 /* Initialize output method, it allocates direct buffers for us */
656 if (vout_InitWrapper(vout))
658 assert(vout->p->decoder_pool);
660 vout->p->displayed.decoded = NULL;
662 /* print some usefull debug info about different vout formats
664 PrintVideoFormat(vout, "pic render", &vout->fmt_render);
665 PrintVideoFormat(vout, "pic in", &vout->fmt_in);
666 PrintVideoFormat(vout, "pic out", &vout->fmt_out);
668 assert(vout->fmt_out.i_width == vout->fmt_render.i_width &&
669 vout->fmt_out.i_height == vout->fmt_render.i_height &&
670 vout->fmt_out.i_chroma == vout->fmt_render.i_chroma);
674 /*****************************************************************************
675 * CleanThread: clean up after InitThread
676 *****************************************************************************
677 * This function is called after a sucessful
678 * initialization. It frees all resources allocated by InitThread.
679 * XXX You have to enter it with change_lock taken.
680 *****************************************************************************/
681 static void ThreadClean(vout_thread_t *vout)
683 /* Destroy translation tables */
684 if (!vout->p->b_error) {
685 picture_fifo_Flush(vout->p->decoder_fifo, INT64_MAX, false);
686 vout_EndWrapper(vout);
690 static int ThreadDisplayPicture(vout_thread_t *vout,
691 bool now, mtime_t *deadline)
693 int displayed_count = 0;
697 const mtime_t date = mdate();
698 const bool is_paused = vout->p->pause.is_on;
699 bool redisplay = is_paused && !now;
702 /* FIXME/XXX we must redisplay the last decoded picture (because
703 * of potential vout updated, or filters update or SPU update)
704 * For now a high update period is needed but it coulmd be removed
706 * - vout module emits events from theselves.
707 * - *and* SPU is modified to emit an event or a deadline when needed.
709 * So it will be done latter.
712 picture_t *peek = picture_fifo_Peek(vout->p->decoder_fifo);
714 is_forced = peek->b_force || is_paused || now;
715 *deadline = (is_forced ? date : peek->date) - vout_chrono_GetHigh(&vout->p->render);
716 picture_Release(peek);
722 /* FIXME a better way for this delay is needed */
723 const mtime_t date_update = vout->p->displayed.date + VOUT_REDISPLAY_DELAY;
724 if (date_update > date || !vout->p->displayed.decoded) {
725 *deadline = vout->p->displayed.decoded ? date_update : VLC_TS_INVALID;
730 *deadline = date - vout_chrono_GetHigh(&vout->p->render);
732 if (*deadline > VOUT_MWAIT_TOLERANCE)
733 *deadline -= VOUT_MWAIT_TOLERANCE;
735 /* If we are too early and can wait, do it */
736 if (date < *deadline && !now)
741 decoded = vout->p->displayed.decoded;
742 vout->p->displayed.decoded = NULL;
744 decoded = picture_fifo_Pop(vout->p->decoder_fifo);
746 if (!is_forced && !vout->p->is_late_dropped) {
747 const mtime_t predicted = date + vout_chrono_GetLow(&vout->p->render);
748 const mtime_t late = predicted - decoded->date;
750 msg_Dbg(vout, "picture might be displayed late (missing %d ms)", (int)(late/1000));
751 if (late > VOUT_DISPLAY_LATE_THRESHOLD) {
752 msg_Warn(vout, "rejected picture because of render time");
754 picture_Release(decoded);
761 vout->p->displayed.is_interlaced = !decoded->b_progressive;
762 vout->p->displayed.qtype = decoded->i_qtype;
764 vout->p->displayed.timestamp = decoded->date;
767 if (vout->p->displayed.decoded)
768 picture_Release(vout->p->displayed.decoded);
769 picture_Hold(decoded);
770 vout->p->displayed.decoded = decoded;
773 vout_chrono_Start(&vout->p->render);
775 picture_t *filtered = NULL;
777 vlc_mutex_lock(&vout->p->vfilter_lock);
778 filtered = filter_chain_VideoFilter(vout->p->p_vf2_chain, decoded);
779 //assert(filtered == decoded); // TODO implement
780 vlc_mutex_unlock(&vout->p->vfilter_lock);
786 * Check for subpictures to display
788 const bool do_snapshot = vout_snapshot_IsRequested(&vout->p->snapshot);
789 mtime_t spu_render_time = is_forced ? mdate() : filtered->date;
790 if (vout->p->pause.is_on)
791 spu_render_time = vout->p->pause.date;
793 spu_render_time = filtered->date > 1 ? filtered->date : mdate();
795 subpicture_t *subpic = spu_SortSubpictures(vout->p->p_spu,
802 * - be sure to end up with a direct buffer.
803 * - blend subtitles, and in a fast access buffer
805 picture_t *direct = NULL;
807 (vout->p->decoder_pool != vout->p->display_pool || subpic)) {
809 if (vout->p->is_decoder_pool_slow)
810 render = picture_NewFromFormat(&vout->fmt_out);
811 else if (vout->p->decoder_pool != vout->p->display_pool)
812 render = picture_pool_Get(vout->p->display_pool);
814 render = picture_pool_Get(vout->p->private_pool);
817 picture_Copy(render, filtered);
819 spu_RenderSubpictures(vout->p->p_spu,
820 render, &vout->fmt_out,
821 subpic, &vout->fmt_in, spu_render_time);
823 if (vout->p->is_decoder_pool_slow) {
824 direct = picture_pool_Get(vout->p->display_pool);
826 picture_Copy(direct, render);
827 picture_Release(render);
832 picture_Release(filtered);
839 * Take a snapshot if requested
841 if (direct && do_snapshot)
842 vout_snapshot_Set(&vout->p->snapshot, &vout->fmt_out, direct);
844 /* Render the direct buffer returned by vout_RenderPicture */
846 vout_RenderWrapper(vout, direct);
848 vout_chrono_Stop(&vout->p->render);
853 msg_Info(vout, "render: avg %d ms var %d ms",
854 (int)(vout->p->render.avg/1000), (int)(vout->p->render.var/1000));
859 /* Wait the real date (for rendering jitter) */
861 mwait(decoded->date);
863 /* Display the direct buffer returned by vout_RenderPicture */
864 vout->p->displayed.date = mdate();
866 vout_DisplayWrapper(vout, direct);
872 vout_statistic_Update(&vout->p->statistic, displayed_count, lost_count);
873 if (displayed_count <= 0)
878 static int ThreadManage(vout_thread_t *vout,
880 vout_interlacing_support_t *interlacing,
881 vout_postprocessing_support_t *postprocessing)
883 vlc_mutex_lock(&vout->p->picture_lock);
885 *deadline = VLC_TS_INVALID;
886 bool has_displayed = !ThreadDisplayPicture(vout, vout->p->step.is_requested, deadline);
889 vout->p->step.timestamp = vout->p->displayed.timestamp;
890 if (vout->p->step.last <= VLC_TS_INVALID)
891 vout->p->step.last = vout->p->step.timestamp;
893 if (vout->p->step.is_requested) {
894 if (!has_displayed && !vout->p->b_picture_empty) {
895 picture_t *peek = picture_fifo_Peek(vout->p->decoder_fifo);
897 picture_Release(peek);
899 vout->p->b_picture_empty = true;
900 vlc_cond_signal(&vout->p->picture_wait);
904 vout->p->step.is_requested = false;
905 vlc_cond_signal(&vout->p->picture_wait);
909 const int picture_qtype = vout->p->displayed.qtype;
910 const bool picture_interlaced = vout->p->displayed.is_interlaced;
912 vlc_mutex_unlock(&vout->p->picture_lock);
914 /* Post processing */
915 vout_SetPostProcessingState(vout, postprocessing, picture_qtype);
918 vout_SetInterlacingState(vout, interlacing, picture_interlaced);
920 if (vout_ManageWrapper(vout)) {
921 /* A fatal error occurred, and the thread must terminate
922 * immediately, without displaying anything - setting b_error to 1
923 * causes the immediate end of the main while() loop. */
930 static void ThreadDisplayOsdTitle(vout_thread_t *vout)
932 if (!vout->p->title.show || !vout->p->title.value)
935 vlc_assert_locked(&vout->p->change_lock);
937 const mtime_t start = mdate();
938 const mtime_t stop = start +
939 INT64_C(1000) * vout->p->title.timeout;
942 vout_ShowTextAbsolute(vout, DEFAULT_CHAN,
943 vout->p->title.value, NULL,
944 vout->p->title.position,
945 30 + vout->fmt_in.i_width
946 - vout->fmt_in.i_visible_width
947 - vout->fmt_in.i_x_offset,
948 20 + vout->fmt_in.i_y_offset,
951 free(vout->p->title.value);
952 vout->p->title.value = NULL;
955 static void ThreadChangeFilter(vout_thread_t *vout)
957 /* Check for "video filter2" changes */
958 vlc_mutex_lock(&vout->p->vfilter_lock);
959 if (vout->p->psz_vf2) {
962 es_format_Init(&fmt, VIDEO_ES, vout->fmt_render.i_chroma);
963 fmt.video = vout->fmt_render;
964 filter_chain_Reset(vout->p->p_vf2_chain, &fmt, &fmt);
966 if (filter_chain_AppendFromString(vout->p->p_vf2_chain,
967 vout->p->psz_vf2) < 0)
968 msg_Err(vout, "Video filter chain creation failed");
970 free(vout->p->psz_vf2);
971 vout->p->psz_vf2 = NULL;
973 vlc_mutex_unlock(&vout->p->vfilter_lock);
976 /*****************************************************************************
977 * Thread: video output thread
978 *****************************************************************************
979 * Video output thread. This function does only returns when the thread is
980 * terminated. It handles the pictures arriving in the video heap and the
981 * display device events.
982 *****************************************************************************/
983 static void *Thread(void *object)
985 vout_thread_t *vout = object;
991 has_wrapper = !vout_OpenWrapper(vout, vout->p->psz_module_name);
993 vlc_mutex_lock(&vout->p->change_lock);
996 vout->p->b_error = ThreadInit(vout);
998 vout->p->b_error = true;
1000 /* signal the creation of the vout */
1001 vout->p->b_ready = true;
1002 vlc_cond_signal(&vout->p->change_wait);
1004 if (vout->p->b_error)
1008 vout_interlacing_support_t interlacing = {
1009 .is_interlaced = false,
1012 vout_postprocessing_support_t postprocessing = {
1013 .qtype = QTYPE_NONE,
1017 * Main loop - it is not executed if an error occurred during
1020 while (!vout->p->b_done && !vout->p->b_error) {
1023 if (ThreadManage(vout, &deadline,
1024 &interlacing, &postprocessing)) {
1025 vout->p->b_error = true;
1029 ThreadDisplayOsdTitle(vout);
1030 ThreadChangeFilter(vout);
1032 vlc_mutex_unlock(&vout->p->change_lock);
1034 if (deadline > VLC_TS_INVALID) {
1035 vlc_mutex_lock(&vout->p->picture_lock);
1036 vlc_cond_timedwait(&vout->p->picture_wait, &vout->p->picture_lock, deadline);
1037 vlc_mutex_unlock(&vout->p->picture_lock);
1040 vlc_mutex_lock(&vout->p->change_lock);
1044 * Error loop - wait until the thread destruction is requested
1046 * XXX I wonder if we should periodically clean the decoder_fifo
1047 * or have a way to prevent it filling up.
1049 while (vout->p->b_error && !vout->p->b_done)
1050 vlc_cond_wait(&vout->p->change_wait, &vout->p->change_lock);
1056 /* Detach subpicture unit from both input and vout */
1057 spu_Attach(vout->p->p_spu, VLC_OBJECT(vout), false);
1058 vlc_object_detach(vout->p->p_spu);
1060 /* Destroy the video filters2 */
1061 filter_chain_Delete(vout->p->p_vf2_chain);
1063 vlc_mutex_unlock(&vout->p->change_lock);
1066 vout_CloseWrapper(vout);
1071 /*****************************************************************************
1072 * object variables callbacks: a bunch of object variables are used by the
1073 * interfaces to interact with the vout.
1074 *****************************************************************************/
1075 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1076 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1078 vout_thread_t *p_vout = (vout_thread_t *)p_this;
1079 input_thread_t *p_input;
1080 (void)psz_cmd; (void)oldval; (void)p_data;
1082 p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1086 msg_Err( p_vout, "Input not found" );
1087 return VLC_EGENERIC;
1090 var_SetBool( p_vout, "intf-change", true );
1092 /* Modify input as well because the vout might have to be restarted */
1093 var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1094 var_SetString( p_input, "vout-filter", newval.psz_string );
1096 /* Now restart current video stream */
1097 input_Control( p_input, INPUT_RESTART_ES, -VIDEO_ES );
1098 vlc_object_release( p_input );
1103 /*****************************************************************************
1104 * Video Filter2 stuff
1105 *****************************************************************************/
1106 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1107 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1109 vout_thread_t *p_vout = (vout_thread_t *)p_this;
1110 (void)psz_cmd; (void)oldval; (void)p_data;
1112 vlc_mutex_lock( &p_vout->p->vfilter_lock );
1113 p_vout->p->psz_vf2 = strdup( newval.psz_string );
1114 vlc_mutex_unlock( &p_vout->p->vfilter_lock );
1120 static void PrintVideoFormat(vout_thread_t *vout,
1121 const char *description,
1122 const video_format_t *fmt)
1124 msg_Dbg(vout, "%s sz %ix%i, of (%i,%i), vsz %ix%i, 4cc %4.4s, sar %i:%i, msk r0x%x g0x%x b0x%x",
1126 fmt->i_width, fmt->i_height, fmt->i_x_offset, fmt->i_y_offset,
1127 fmt->i_visible_width, fmt->i_visible_height,
1128 (char*)&fmt->i_chroma,
1129 fmt->i_sar_num, fmt->i_sar_den,
1130 fmt->i_rmask, fmt->i_gmask, fmt->i_bmask);