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>
46 #include <vlc_vout_osd.h>
49 #include <vlc_input.h>
50 #include "vout_internal.h"
51 #include "interlacing.h"
52 #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->p->fmt_render.i_chroma != vlc_fourcc_GetCodec( VIDEO_ES, p_fmt->i_chroma ) ||
167 p_vout->p->fmt_render.i_width != p_fmt->i_width ||
168 p_vout->p->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->p->fmt_render.i_sar_num ||
198 i_sar_den != p_vout->p->fmt_render.i_sar_den ) )
200 p_vout->p->fmt_in.i_sar_num = i_sar_num;
201 p_vout->p->fmt_in.i_sar_den = i_sar_den;
203 p_vout->p->fmt_render.i_sar_num = i_sar_num;
204 p_vout->p->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->p->fmt_render = *p_fmt; /* FIXME palette */
276 p_vout->p->fmt_in = *p_fmt; /* FIXME palette */
278 p_vout->p->fmt_render.i_chroma =
279 p_vout->p->fmt_in.i_chroma = i_chroma;
280 video_format_FixRgb( &p_vout->p->fmt_render );
281 video_format_FixRgb( &p_vout->p->fmt_in );
283 /* Initialize misc stuff */
284 vout_control_Init( &p_vout->p->control );
285 p_vout->p->i_changes = 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->displayed.date = VLC_TS_INVALID;
292 p_vout->p->displayed.decoded = NULL;
293 p_vout->p->displayed.timestamp = VLC_TS_INVALID;
294 p_vout->p->displayed.qtype = QTYPE_NONE;
295 p_vout->p->displayed.is_interlaced = false;
297 p_vout->p->step.last = VLC_TS_INVALID;
298 p_vout->p->step.timestamp = VLC_TS_INVALID;
300 p_vout->p->pause.is_on = false;
301 p_vout->p->pause.date = VLC_TS_INVALID;
303 p_vout->p->decoder_fifo = picture_fifo_New();
304 p_vout->p->decoder_pool = NULL;
306 vlc_mouse_Init( &p_vout->p->mouse );
308 vout_snapshot_Init( &p_vout->p->snapshot );
310 p_vout->p->p_vf2_chain = filter_chain_New( p_vout, "video filter2",
311 false, video_filter_buffer_allocation_init, NULL, p_vout );
313 /* Initialize locks */
314 vlc_mutex_init( &p_vout->p->picture_lock );
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 */
346 var_Create( p_vout, "video-filter",
347 VLC_VAR_STRING | VLC_VAR_DOINHERIT | VLC_VAR_ISCOMMAND );
348 var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
349 var_TriggerCallback( p_vout, "video-filter" );
351 /* Choose the video output module */
352 if( !p_vout->p->psz_filter_chain || !*p_vout->p->psz_filter_chain )
358 psz_parser = strdup( p_vout->p->psz_filter_chain );
359 p_vout->p->title.show = false;
362 /* Create the vout thread */
363 char *psz_tmp = config_ChainCreate( &psz_name, &p_cfg, psz_parser );
366 p_vout->p->p_cfg = p_cfg;
368 /* Create a few object variables for interface interaction */
369 var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
370 text.psz_string = _("Filters");
371 var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
372 var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
375 vout_InitInterlacingSupport( p_vout, p_vout->p->displayed.is_interlaced );
377 if( p_vout->p->psz_filter_chain && *p_vout->p->psz_filter_chain )
380 if( asprintf( &psz_tmp, "%s,none", psz_name ) < 0 )
381 psz_tmp = strdup( "" );
385 p_vout->p->psz_module_name = psz_name;
388 vlc_object_set_destructor( p_vout, vout_Destructor );
391 vlc_cond_init( &p_vout->p->change_wait );
392 if( vlc_clone( &p_vout->p->thread, Thread, p_vout,
393 VLC_THREAD_PRIORITY_OUTPUT ) )
395 spu_Attach( p_vout->p->p_spu, VLC_OBJECT(p_vout), false );
396 spu_Destroy( p_vout->p->p_spu );
397 p_vout->p->p_spu = NULL;
398 vlc_object_release( p_vout );
402 vlc_mutex_lock( &p_vout->p->change_lock );
403 while( !p_vout->p->b_ready )
404 { /* We are (ab)using the same condition in opposite directions for
405 * b_ready and b_done. This works because of the strict ordering. */
406 assert( !p_vout->p->b_done );
407 vlc_cond_wait( &p_vout->p->change_wait, &p_vout->p->change_lock );
409 vlc_mutex_unlock( &p_vout->p->change_lock );
411 if( p_vout->p->b_error )
413 msg_Err( p_vout, "video output creation failed" );
414 vout_CloseAndRelease( p_vout );
421 /*****************************************************************************
422 * vout_Close: Close a vout created by vout_Create.
423 *****************************************************************************
424 * You HAVE to call it on vout created by vout_Create before vlc_object_release.
425 * You should NEVER call it on vout not obtained through vout_Create
426 * (like with vout_Request or vlc_object_find.)
427 * You can use vout_CloseAndRelease() as a convenience method.
428 *****************************************************************************/
429 void vout_Close( vout_thread_t *p_vout )
433 vlc_mutex_lock( &p_vout->p->change_lock );
434 p_vout->p->b_done = true;
435 vlc_cond_signal( &p_vout->p->change_wait );
436 vlc_mutex_unlock( &p_vout->p->change_lock );
438 vout_snapshot_End( &p_vout->p->snapshot );
440 vlc_join( p_vout->p->thread, NULL );
444 static void vout_Destructor( vlc_object_t * p_this )
446 vout_thread_t *p_vout = (vout_thread_t *)p_this;
448 /* Make sure the vout was stopped first */
449 //assert( !p_vout->p_module );
451 free( p_vout->p->psz_module_name );
454 if( p_vout->p->p_spu )
455 spu_Destroy( p_vout->p->p_spu );
457 vout_chrono_Clean( &p_vout->p->render );
459 if( p_vout->p->decoder_fifo )
460 picture_fifo_Delete( p_vout->p->decoder_fifo );
461 assert( !p_vout->p->decoder_pool );
463 /* Destroy the locks */
464 vlc_cond_destroy( &p_vout->p->change_wait );
465 vlc_mutex_destroy( &p_vout->p->picture_lock );
466 vlc_mutex_destroy( &p_vout->p->change_lock );
467 vlc_mutex_destroy( &p_vout->p->vfilter_lock );
468 vout_control_Clean( &p_vout->p->control );
471 vout_statistic_Clean( &p_vout->p->statistic );
474 vout_snapshot_Clean( &p_vout->p->snapshot );
477 free( p_vout->p->psz_filter_chain );
479 config_ChainDestroy( p_vout->p->p_cfg );
486 void vout_ChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
488 vout_control_cmd_t cmd;
489 vout_control_cmd_Init(&cmd, VOUT_CONTROL_PAUSE);
490 cmd.u.pause.is_on = is_paused;
491 cmd.u.pause.date = date;
492 vout_control_Push(&vout->p->control, &cmd);
494 vout_control_WaitEmpty(&vout->p->control);
497 void vout_GetResetStatistic( vout_thread_t *p_vout, int *pi_displayed, int *pi_lost )
499 vout_statistic_GetReset( &p_vout->p->statistic,
500 pi_displayed, pi_lost );
503 void vout_Flush(vout_thread_t *vout, mtime_t date)
505 vout_control_PushTime(&vout->p->control, VOUT_CONTROL_FLUSH, date);
506 vout_control_WaitEmpty(&vout->p->control);
509 void vout_Reset(vout_thread_t *vout)
511 vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_RESET);
512 vout_control_WaitEmpty(&vout->p->control);
515 bool vout_IsEmpty(vout_thread_t *vout)
517 vlc_mutex_lock(&vout->p->picture_lock);
519 picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
521 picture_Release(picture);
523 vlc_mutex_unlock(&vout->p->picture_lock);
528 void vout_FixLeaks( vout_thread_t *vout )
530 vlc_mutex_lock(&vout->p->picture_lock);
532 picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
534 picture = picture_pool_Get(vout->p->decoder_pool);
538 picture_Release(picture);
539 /* Not all pictures has been displayed yet or some are
541 vlc_mutex_unlock(&vout->p->picture_lock);
545 /* There is no reason that no pictures are available, force one
546 * from the pool, becarefull with it though */
547 msg_Err(vout, "pictures leaked, trying to workaround");
550 picture_pool_NonEmpty(vout->p->decoder_pool, false);
552 vlc_mutex_unlock(&vout->p->picture_lock);
554 void vout_NextPicture(vout_thread_t *vout, mtime_t *duration)
556 vout_control_cmd_t cmd;
557 vout_control_cmd_Init(&cmd, VOUT_CONTROL_STEP);
558 cmd.u.time_ptr = duration;
560 vout_control_Push(&vout->p->control, &cmd);
561 vout_control_WaitEmpty(&vout->p->control);
564 void vout_DisplayTitle(vout_thread_t *vout, const char *title)
567 vout_control_PushString(&vout->p->control, VOUT_CONTROL_OSD_TITLE, title);
570 spu_t *vout_GetSpu( vout_thread_t *p_vout )
572 return p_vout->p->p_spu;
575 /* vout_Control* are usable by anyone at anytime */
576 void vout_ControlChangeFullscreen(vout_thread_t *vout, bool fullscreen)
578 vout_control_PushBool(&vout->p->control, VOUT_CONTROL_FULLSCREEN,
581 void vout_ControlChangeOnTop(vout_thread_t *vout, bool is_on_top)
583 vout_control_PushBool(&vout->p->control, VOUT_CONTROL_ON_TOP,
586 void vout_ControlChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
588 vout_control_PushBool(&vout->p->control, VOUT_CONTROL_DISPLAY_FILLED,
591 void vout_ControlChangeZoom(vout_thread_t *vout, int num, int den)
593 vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ZOOM,
597 /*****************************************************************************
598 * InitThread: initialize video output thread
599 *****************************************************************************
600 * This function is called from Thread and performs the second step of the
601 * initialization. It returns 0 on success. Note that the thread's flag are not
602 * modified inside this function.
603 * XXX You have to enter it with change_lock taken.
604 *****************************************************************************/
605 static int ThreadInit(vout_thread_t *vout)
607 /* Initialize output method, it allocates direct buffers for us */
608 if (vout_InitWrapper(vout))
610 assert(vout->p->decoder_pool);
612 vout->p->displayed.decoded = NULL;
614 /* print some usefull debug info about different vout formats
616 PrintVideoFormat(vout, "pic render", &vout->p->fmt_render);
617 PrintVideoFormat(vout, "pic in", &vout->p->fmt_in);
618 PrintVideoFormat(vout, "pic out", &vout->p->fmt_out);
620 assert(vout->p->fmt_out.i_width == vout->p->fmt_render.i_width &&
621 vout->p->fmt_out.i_height == vout->p->fmt_render.i_height &&
622 vout->p->fmt_out.i_chroma == vout->p->fmt_render.i_chroma);
626 static int ThreadDisplayPicture(vout_thread_t *vout,
627 bool now, mtime_t *deadline)
629 int displayed_count = 0;
633 const mtime_t date = mdate();
634 const bool is_paused = vout->p->pause.is_on;
635 bool redisplay = is_paused && !now && vout->p->displayed.decoded;
638 /* FIXME/XXX we must redisplay the last decoded picture (because
639 * of potential vout updated, or filters update or SPU update)
640 * For now a high update period is needed but it coulmd be removed
642 * - vout module emits events from theselves.
643 * - *and* SPU is modified to emit an event or a deadline when needed.
645 * So it will be done latter.
648 picture_t *peek = picture_fifo_Peek(vout->p->decoder_fifo);
650 is_forced = peek->b_force || is_paused || now;
651 *deadline = (is_forced ? date : peek->date) - vout_chrono_GetHigh(&vout->p->render);
652 picture_Release(peek);
658 /* FIXME a better way for this delay is needed */
659 const mtime_t date_update = vout->p->displayed.date + VOUT_REDISPLAY_DELAY;
660 if (date_update > date || !vout->p->displayed.decoded) {
661 *deadline = vout->p->displayed.decoded ? date_update : VLC_TS_INVALID;
666 *deadline = date - vout_chrono_GetHigh(&vout->p->render);
668 if (*deadline > VOUT_MWAIT_TOLERANCE)
669 *deadline -= VOUT_MWAIT_TOLERANCE;
671 /* If we are too early and can wait, do it */
672 if (date < *deadline && !now)
677 decoded = vout->p->displayed.decoded;
678 vout->p->displayed.decoded = NULL;
680 decoded = picture_fifo_Pop(vout->p->decoder_fifo);
682 if (!is_forced && !vout->p->is_late_dropped) {
683 const mtime_t predicted = date + vout_chrono_GetLow(&vout->p->render);
684 const mtime_t late = predicted - decoded->date;
686 msg_Dbg(vout, "picture might be displayed late (missing %d ms)", (int)(late/1000));
687 if (late > VOUT_DISPLAY_LATE_THRESHOLD) {
688 msg_Warn(vout, "rejected picture because of render time");
690 picture_Release(decoded);
697 vout->p->displayed.is_interlaced = !decoded->b_progressive;
698 vout->p->displayed.qtype = decoded->i_qtype;
700 vout->p->displayed.timestamp = decoded->date;
703 if (vout->p->displayed.decoded)
704 picture_Release(vout->p->displayed.decoded);
705 picture_Hold(decoded);
706 vout->p->displayed.decoded = decoded;
709 vout_chrono_Start(&vout->p->render);
711 picture_t *filtered = NULL;
713 vlc_mutex_lock(&vout->p->vfilter_lock);
714 filtered = filter_chain_VideoFilter(vout->p->p_vf2_chain, decoded);
715 //assert(filtered == decoded); // TODO implement
716 vlc_mutex_unlock(&vout->p->vfilter_lock);
722 * Check for subpictures to display
724 const bool do_snapshot = vout_snapshot_IsRequested(&vout->p->snapshot);
725 mtime_t spu_render_time = is_forced ? mdate() : filtered->date;
726 if (vout->p->pause.is_on)
727 spu_render_time = vout->p->pause.date;
729 spu_render_time = filtered->date > 1 ? filtered->date : mdate();
731 subpicture_t *subpic = spu_SortSubpictures(vout->p->p_spu,
738 * - be sure to end up with a direct buffer.
739 * - blend subtitles, and in a fast access buffer
741 picture_t *direct = NULL;
743 (vout->p->decoder_pool != vout->p->display_pool || subpic)) {
745 if (vout->p->is_decoder_pool_slow)
746 render = picture_NewFromFormat(&vout->p->fmt_out);
747 else if (vout->p->decoder_pool != vout->p->display_pool)
748 render = picture_pool_Get(vout->p->display_pool);
750 render = picture_pool_Get(vout->p->private_pool);
753 picture_Copy(render, filtered);
755 spu_RenderSubpictures(vout->p->p_spu,
756 render, &vout->p->fmt_out,
757 subpic, &vout->p->fmt_in, spu_render_time);
759 if (vout->p->is_decoder_pool_slow) {
760 direct = picture_pool_Get(vout->p->display_pool);
762 picture_Copy(direct, render);
763 picture_Release(render);
768 picture_Release(filtered);
775 * Take a snapshot if requested
777 if (direct && do_snapshot)
778 vout_snapshot_Set(&vout->p->snapshot, &vout->p->fmt_out, direct);
780 /* Render the direct buffer returned by vout_RenderPicture */
782 vout_RenderWrapper(vout, direct);
784 vout_chrono_Stop(&vout->p->render);
789 msg_Info(vout, "render: avg %d ms var %d ms",
790 (int)(vout->p->render.avg/1000), (int)(vout->p->render.var/1000));
795 /* Wait the real date (for rendering jitter) */
797 mwait(decoded->date);
799 /* Display the direct buffer returned by vout_RenderPicture */
800 vout->p->displayed.date = mdate();
802 vout_DisplayWrapper(vout, direct);
808 vout_statistic_Update(&vout->p->statistic, displayed_count, lost_count);
809 if (displayed_count <= 0)
814 static int ThreadManage(vout_thread_t *vout,
816 vout_interlacing_support_t *interlacing,
817 vout_postprocessing_support_t *postprocessing)
819 vlc_mutex_lock(&vout->p->picture_lock);
821 *deadline = VLC_TS_INVALID;
822 ThreadDisplayPicture(vout, false, deadline);
824 const int picture_qtype = vout->p->displayed.qtype;
825 const bool picture_interlaced = vout->p->displayed.is_interlaced;
827 vlc_mutex_unlock(&vout->p->picture_lock);
829 /* Post processing */
830 vout_SetPostProcessingState(vout, postprocessing, picture_qtype);
833 vout_SetInterlacingState(vout, interlacing, picture_interlaced);
835 if (vout_ManageWrapper(vout)) {
836 /* A fatal error occurred, and the thread must terminate
837 * immediately, without displaying anything - setting b_error to 1
838 * causes the immediate end of the main while() loop. */
845 static void ThreadDisplayOsdTitle(vout_thread_t *vout, const char *string)
847 if (!vout->p->title.show)
850 vlc_assert_locked(&vout->p->change_lock);
852 vout_OSDText(vout, SPU_DEFAULT_CHANNEL,
853 vout->p->title.position, INT64_C(1000) * vout->p->title.timeout,
857 static void ThreadChangeFilters(vout_thread_t *vout, const char *filters)
860 es_format_Init(&fmt, VIDEO_ES, vout->p->fmt_render.i_chroma);
861 fmt.video = vout->p->fmt_render;
863 vlc_mutex_lock(&vout->p->vfilter_lock);
865 filter_chain_Reset(vout->p->p_vf2_chain, &fmt, &fmt);
866 if (filter_chain_AppendFromString(vout->p->p_vf2_chain,
868 msg_Err(vout, "Video filter chain creation failed");
870 vlc_mutex_unlock(&vout->p->vfilter_lock);
873 static void ThreadChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
875 vlc_assert_locked(&vout->p->change_lock);
876 assert(!vout->p->pause.is_on || !is_paused);
878 if (vout->p->pause.is_on) {
879 const mtime_t duration = date - vout->p->pause.date;
881 if (vout->p->step.timestamp > VLC_TS_INVALID)
882 vout->p->step.timestamp += duration;
883 if (vout->p->step.last > VLC_TS_INVALID)
884 vout->p->step.last += duration;
885 picture_fifo_OffsetDate(vout->p->decoder_fifo, duration);
886 if (vout->p->displayed.decoded)
887 vout->p->displayed.decoded->date += duration;
889 spu_OffsetSubtitleDate(vout->p->p_spu, duration);
891 vout->p->step.timestamp = VLC_TS_INVALID;
892 vout->p->step.last = VLC_TS_INVALID;
894 vout->p->pause.is_on = is_paused;
895 vout->p->pause.date = date;
898 static void ThreadFlush(vout_thread_t *vout, bool below, mtime_t date)
900 vout->p->step.timestamp = VLC_TS_INVALID;
901 vout->p->step.last = VLC_TS_INVALID;
903 picture_t *last = vout->p->displayed.decoded;
905 if (( below && last->date <= date) ||
906 (!below && last->date >= date)) {
907 picture_Release(last);
909 vout->p->displayed.decoded = NULL;
910 vout->p->displayed.date = VLC_TS_INVALID;
911 vout->p->displayed.timestamp = VLC_TS_INVALID;
914 picture_fifo_Flush(vout->p->decoder_fifo, date, below);
917 static void ThreadReset(vout_thread_t *vout)
919 ThreadFlush(vout, true, INT64_MAX);
920 if (vout->p->decoder_pool)
921 picture_pool_NonEmpty(vout->p->decoder_pool, true);
922 vout->p->pause.is_on = false;
923 vout->p->pause.date = mdate();
926 static void ThreadStep(vout_thread_t *vout, mtime_t *duration)
930 if (vout->p->step.last <= VLC_TS_INVALID)
931 vout->p->step.last = vout->p->displayed.timestamp;
934 if (ThreadDisplayPicture(vout, true, &dummy))
937 vout->p->step.timestamp = vout->p->displayed.timestamp;
939 if (vout->p->step.last > VLC_TS_INVALID &&
940 vout->p->step.timestamp > vout->p->step.last) {
941 *duration = vout->p->step.timestamp - vout->p->step.last;
942 vout->p->step.last = vout->p->step.timestamp;
943 /* TODO advance subpicture by the duration ... */
947 static void ThreadChangeFullscreen(vout_thread_t *vout, bool fullscreen)
949 /* FIXME not sure setting "fullscreen" is good ... */
950 var_SetBool(vout, "fullscreen", fullscreen);
951 vout_SetDisplayFullscreen(vout->p->display.vd, fullscreen);
954 static void ThreadChangeOnTop(vout_thread_t *vout, bool is_on_top)
956 vout_SetWindowState(vout->p->display.vd,
957 is_on_top ? VOUT_WINDOW_STATE_ABOVE :
958 VOUT_WINDOW_STATE_NORMAL);
961 static void ThreadChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
963 vout_SetDisplayFilled(vout->p->display.vd, is_filled);
966 static void ThreadChangeZoom(vout_thread_t *vout, int num, int den)
968 if (num * 10 < den) {
971 } else if (num > den * 10) {
975 vout_SetDisplayZoom(vout->p->display.vd, num, den);
978 static void ThreadClean(vout_thread_t *vout)
980 /* Destroy translation tables */
981 if (!vout->p->b_error) {
982 ThreadFlush(vout, true, INT64_MAX);
983 vout_EndWrapper(vout);
987 /*****************************************************************************
988 * Thread: video output thread
989 *****************************************************************************
990 * Video output thread. This function does only returns when the thread is
991 * terminated. It handles the pictures arriving in the video heap and the
992 * display device events.
993 *****************************************************************************/
994 static void *Thread(void *object)
996 vout_thread_t *vout = object;
1002 has_wrapper = !vout_OpenWrapper(vout, vout->p->psz_module_name);
1004 vlc_mutex_lock(&vout->p->change_lock);
1007 vout->p->b_error = ThreadInit(vout);
1009 vout->p->b_error = true;
1011 /* signal the creation of the vout */
1012 vout->p->b_ready = true;
1013 vlc_cond_signal(&vout->p->change_wait);
1015 if (vout->p->b_error)
1019 vout_interlacing_support_t interlacing = {
1020 .is_interlaced = false,
1023 vout_postprocessing_support_t postprocessing = {
1024 .qtype = QTYPE_NONE,
1028 * Main loop - it is not executed if an error occurred during
1031 mtime_t deadline = VLC_TS_INVALID;
1032 while (!vout->p->b_done && !vout->p->b_error) {
1033 vout_control_cmd_t cmd;
1035 vlc_mutex_unlock(&vout->p->change_lock);
1036 /* FIXME remove thoses ugly timeouts
1038 while (!vout_control_Pop(&vout->p->control, &cmd, deadline, 100000)) {
1039 /* TODO remove the lock when possible (ie when
1040 * vout->p->fmt_* are not protected by it anymore) */
1041 vlc_mutex_lock(&vout->p->change_lock);
1043 case VOUT_CONTROL_OSD_TITLE:
1044 ThreadDisplayOsdTitle(vout, cmd.u.string);
1046 case VOUT_CONTROL_CHANGE_FILTERS:
1047 ThreadChangeFilters(vout, cmd.u.string);
1049 case VOUT_CONTROL_PAUSE:
1050 ThreadChangePause(vout, cmd.u.pause.is_on, cmd.u.pause.date);
1052 case VOUT_CONTROL_FLUSH:
1053 ThreadFlush(vout, false, cmd.u.time);
1055 case VOUT_CONTROL_RESET:
1058 case VOUT_CONTROL_STEP:
1059 ThreadStep(vout, cmd.u.time_ptr);
1061 case VOUT_CONTROL_FULLSCREEN:
1062 ThreadChangeFullscreen(vout, cmd.u.boolean);
1064 case VOUT_CONTROL_ON_TOP:
1065 ThreadChangeOnTop(vout, cmd.u.boolean);
1067 case VOUT_CONTROL_DISPLAY_FILLED:
1068 ThreadChangeDisplayFilled(vout, cmd.u.boolean);
1070 case VOUT_CONTROL_ZOOM:
1071 ThreadChangeZoom(vout, cmd.u.pair.a, cmd.u.pair.b);
1076 vlc_mutex_unlock(&vout->p->change_lock);
1077 vout_control_cmd_Clean(&cmd);
1079 vlc_mutex_lock(&vout->p->change_lock);
1082 if (ThreadManage(vout, &deadline,
1083 &interlacing, &postprocessing)) {
1084 vout->p->b_error = true;
1090 * Error loop - wait until the thread destruction is requested
1092 * XXX I wonder if we should periodically clean the decoder_fifo
1093 * or have a way to prevent it filling up.
1095 while (vout->p->b_error && !vout->p->b_done)
1096 vlc_cond_wait(&vout->p->change_wait, &vout->p->change_lock);
1102 /* Detach subpicture unit from both input and vout */
1103 spu_Attach(vout->p->p_spu, VLC_OBJECT(vout), false);
1104 vlc_object_detach(vout->p->p_spu);
1106 vlc_mutex_unlock(&vout->p->change_lock);
1109 vout_CloseWrapper(vout);
1110 vout_control_Dead(&vout->p->control);
1112 /* Destroy the video filters2 */
1113 filter_chain_Delete(vout->p->p_vf2_chain);
1118 /*****************************************************************************
1119 * object variables callbacks: a bunch of object variables are used by the
1120 * interfaces to interact with the vout.
1121 *****************************************************************************/
1122 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1123 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1125 vout_thread_t *p_vout = (vout_thread_t *)p_this;
1126 input_thread_t *p_input;
1127 (void)psz_cmd; (void)oldval; (void)p_data;
1129 p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1133 msg_Err( p_vout, "Input not found" );
1134 return VLC_EGENERIC;
1137 /* Modify input as well because the vout might have to be restarted */
1138 var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1139 var_SetString( p_input, "vout-filter", newval.psz_string );
1141 /* Now restart current video stream */
1142 input_Control( p_input, INPUT_RESTART_ES, -VIDEO_ES );
1143 vlc_object_release( p_input );
1148 /*****************************************************************************
1149 * Video Filter2 stuff
1150 *****************************************************************************/
1151 static int VideoFilter2Callback(vlc_object_t *object, char const *cmd,
1152 vlc_value_t oldval, vlc_value_t newval,
1155 vout_thread_t *vout = (vout_thread_t *)object;
1156 (void)cmd; (void)oldval; (void)data;
1158 vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_FILTERS,
1164 static void PrintVideoFormat(vout_thread_t *vout,
1165 const char *description,
1166 const video_format_t *fmt)
1168 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",
1170 fmt->i_width, fmt->i_height, fmt->i_x_offset, fmt->i_y_offset,
1171 fmt->i_visible_width, fmt->i_visible_height,
1172 (char*)&fmt->i_chroma,
1173 fmt->i_sar_num, fmt->i_sar_den,
1174 fmt->i_rmask, fmt->i_gmask, fmt->i_bmask);