1 /*****************************************************************************
2 * video_output.c : video output thread
3 * This module describes the programming interface for video output threads.
4 * It includes functions allowing to open a new thread, send pictures to a
5 * thread, and destroy a previously oppened video output thread.
6 *****************************************************************************
7 * Copyright (C) 2000-2004 VideoLAN
10 * Authors: Vincent Seguin <seguin@via.ecp.fr>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
25 *****************************************************************************/
27 /*****************************************************************************
29 *****************************************************************************/
30 #include <stdlib.h> /* free() */
34 #ifdef HAVE_SYS_TIMES_H
35 # include <sys/times.h>
38 #include "vlc_video.h"
39 #include "video_output.h"
41 #include <vlc/input.h> /* for input_thread_t and i_pts_delay */
43 #if defined( SYS_DARWIN )
44 #include "darwin_specific.h"
47 /*****************************************************************************
49 *****************************************************************************/
50 static int InitThread ( vout_thread_t * );
51 static void RunThread ( vout_thread_t * );
52 static void ErrorThread ( vout_thread_t * );
53 static void EndThread ( vout_thread_t * );
54 static void DestroyThread ( vout_thread_t * );
56 static void AspectRatio ( int, int *, int * );
57 static int BinaryLog ( uint32_t );
58 static void MaskToShift ( int *, int *, uint32_t );
59 static void InitWindowSize ( vout_thread_t *, int *, int * );
61 /* Object variables callbacks */
62 static int DeinterlaceCallback( vlc_object_t *, char const *,
63 vlc_value_t, vlc_value_t, void * );
64 static int FilterCallback( vlc_object_t *, char const *,
65 vlc_value_t, vlc_value_t, void * );
67 /*****************************************************************************
68 * vout_Request: find a video output thread, create one, or destroy one.
69 *****************************************************************************
70 * This function looks for a video output thread matching the current
71 * properties. If not found, it spawns a new one.
72 *****************************************************************************/
73 vout_thread_t * __vout_Request ( vlc_object_t *p_this, vout_thread_t *p_vout,
74 unsigned int i_width, unsigned int i_height,
75 vlc_fourcc_t i_chroma, unsigned int i_aspect )
77 if( !i_width || !i_height || !i_chroma )
79 /* Reattach video output to input before bailing out */
82 vlc_object_t *p_playlist;
84 p_playlist = vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
89 spu_Attach( p_vout->p_spu, p_this, VLC_FALSE );
90 vlc_object_detach( p_vout );
91 vlc_object_attach( p_vout, p_playlist );
93 vlc_object_release( p_playlist );
97 msg_Dbg( p_this, "cannot find playlist, destroying vout" );
98 vlc_object_detach( p_vout );
99 vout_Destroy( p_vout );
105 /* If a video output was provided, lock it, otherwise look for one. */
108 vlc_object_yield( p_vout );
112 p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
116 vlc_object_t *p_playlist;
118 p_playlist = vlc_object_find( p_this,
119 VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
122 p_vout = vlc_object_find( p_playlist,
123 VLC_OBJECT_VOUT, FIND_CHILD );
124 /* only first children of p_input for unused vout */
125 if( p_vout && p_vout->p_parent != p_playlist )
127 vlc_object_release( p_vout );
130 vlc_object_release( p_playlist );
135 /* If we now have a video output, check it has the right properties */
138 char *psz_filter_chain;
140 /* We don't directly check for the "filter" variable for obvious
141 * performance reasons. */
142 if( p_vout->b_filter_change )
144 psz_filter_chain = config_GetPsz( p_this, "filter" );
146 if( psz_filter_chain && !*psz_filter_chain )
148 free( psz_filter_chain );
149 psz_filter_chain = NULL;
151 if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
153 free( p_vout->psz_filter_chain );
154 p_vout->psz_filter_chain = NULL;
157 if( ( !psz_filter_chain && !p_vout->psz_filter_chain ) ||
158 ( psz_filter_chain && p_vout->psz_filter_chain &&
159 !strcmp( psz_filter_chain, p_vout->psz_filter_chain ) ) )
161 p_vout->b_filter_change = VLC_FALSE;
164 if( psz_filter_chain ) free( psz_filter_chain );
167 if( ( p_vout->render.i_width != i_width ) ||
168 ( p_vout->render.i_height != i_height ) ||
169 ( p_vout->render.i_chroma != i_chroma ) ||
170 ( p_vout->render.i_aspect != i_aspect
171 && !p_vout->b_override_aspect ) ||
172 p_vout->b_filter_change )
174 /* We are not interested in this format, close this vout */
175 vlc_object_detach( p_vout );
176 vlc_object_release( p_vout );
177 vout_Destroy( p_vout );
182 /* This video output is cool! Hijack it. */
183 vlc_object_detach( p_vout );
184 spu_Attach( p_vout->p_spu, p_this, VLC_TRUE );
185 vlc_object_attach( p_vout, p_this );
186 vlc_object_release( p_vout );
192 msg_Dbg( p_this, "no usable vout present, spawning one" );
194 p_vout = vout_Create( p_this, i_width, i_height, i_chroma, i_aspect );
200 /*****************************************************************************
201 * vout_Create: creates a new video output thread
202 *****************************************************************************
203 * This function creates a new video output thread, and returns a pointer
204 * to its description. On error, it returns NULL.
205 *****************************************************************************/
206 vout_thread_t * __vout_Create( vlc_object_t *p_parent,
207 unsigned int i_width, unsigned int i_height,
208 vlc_fourcc_t i_chroma, unsigned int i_aspect )
210 vout_thread_t * p_vout; /* thread descriptor */
211 input_thread_t * p_input_thread;
212 int i_index; /* loop variable */
214 vlc_value_t val, text;
216 /* Allocate descriptor */
217 p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
220 msg_Err( p_parent, "out of memory" );
224 /* Initialize pictures - translation tables and functions
225 * will be initialized later in InitThread */
226 for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
228 p_vout->p_picture[i_index].pf_lock = NULL;
229 p_vout->p_picture[i_index].pf_unlock = NULL;
230 p_vout->p_picture[i_index].i_status = FREE_PICTURE;
231 p_vout->p_picture[i_index].i_type = EMPTY_PICTURE;
232 p_vout->p_picture[i_index].b_slow = 0;
235 /* No images in the heap */
236 p_vout->i_heap_size = 0;
238 /* Initialize the rendering heap */
239 I_RENDERPICTURES = 0;
240 p_vout->render.i_width = i_width;
241 p_vout->render.i_height = i_height;
242 p_vout->render.i_chroma = i_chroma;
243 p_vout->render.i_aspect = i_aspect;
245 p_vout->render.i_rmask = 0;
246 p_vout->render.i_gmask = 0;
247 p_vout->render.i_bmask = 0;
249 p_vout->render.i_last_used_pic = -1;
250 p_vout->render.b_allow_modify_pics = 1;
252 /* Zero the output heap */
253 I_OUTPUTPICTURES = 0;
254 p_vout->output.i_width = 0;
255 p_vout->output.i_height = 0;
256 p_vout->output.i_chroma = 0;
257 p_vout->output.i_aspect = 0;
259 p_vout->output.i_rmask = 0;
260 p_vout->output.i_gmask = 0;
261 p_vout->output.i_bmask = 0;
263 /* Initialize misc stuff */
264 p_vout->i_changes = 0;
266 p_vout->b_grayscale = 0;
268 p_vout->b_interface = 0;
270 p_vout->b_fullscreen = 0;
271 p_vout->i_alignment = 0;
272 p_vout->render_time = 10;
273 p_vout->c_fps_samples = 0;
274 p_vout->b_filter_change = 0;
275 p_vout->pf_control = 0;
276 p_vout->p_parent_intf = 0;
278 /* Initialize locks */
279 vlc_mutex_init( p_vout, &p_vout->picture_lock );
280 vlc_mutex_init( p_vout, &p_vout->change_lock );
282 /* Mouse coordinates */
283 var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
284 var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
285 var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
286 var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
287 var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
289 /* Initialize subpicture unit */
290 p_vout->p_spu = spu_Init( p_vout );
291 spu_Attach( p_vout->p_spu, p_parent, VLC_TRUE );
293 /* Attach the new object now so we can use var inheritance below */
294 vlc_object_attach( p_vout, p_parent );
296 /* Take care of some "interface/control" related initialisations */
297 vout_IntfInit( p_vout );
299 p_vout->b_override_aspect = VLC_FALSE;
301 /* If the parent is not a VOUT object, that means we are at the start of
302 * the video output pipe */
303 if( p_parent->i_object_type != VLC_OBJECT_VOUT )
305 var_Get( p_vout, "aspect-ratio", &val );
307 /* Check whether the user tried to override aspect ratio */
310 unsigned int i_new_aspect = i_aspect;
311 char *psz_parser = strchr( val.psz_string, ':' );
315 *psz_parser++ = '\0';
316 i_new_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
317 / atoi( psz_parser );
321 i_new_aspect = i_width * VOUT_ASPECT_FACTOR
322 * atof( val.psz_string )
326 free( val.psz_string );
328 if( i_new_aspect && i_new_aspect != i_aspect )
330 int i_aspect_x, i_aspect_y;
332 AspectRatio( i_new_aspect, &i_aspect_x, &i_aspect_y );
334 msg_Dbg( p_vout, "overriding source aspect ratio to %i:%i",
335 i_aspect_x, i_aspect_y );
337 p_vout->render.i_aspect = i_new_aspect;
339 p_vout->b_override_aspect = VLC_TRUE;
343 /* Look for the default filter configuration */
344 var_Create( p_vout, "filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
345 var_Get( p_vout, "filter", &val );
346 p_vout->psz_filter_chain = val.psz_string;
350 /* continue the parent's filter chain */
353 psz_end = strchr( ((vout_thread_t *)p_parent)->psz_filter_chain, ':' );
354 if( psz_end && *(psz_end+1) )
355 p_vout->psz_filter_chain = strdup( psz_end+1 );
356 else p_vout->psz_filter_chain = NULL;
359 /* Choose the video output module */
360 if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
362 var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
363 var_Get( p_vout, "vout", &val );
364 psz_plugin = val.psz_string;
368 /* the filter chain is a string list of filters separated by double
372 psz_end = strchr( p_vout->psz_filter_chain, ':' );
374 psz_plugin = strndup( p_vout->psz_filter_chain,
375 psz_end - p_vout->psz_filter_chain );
376 else psz_plugin = strdup( p_vout->psz_filter_chain );
379 /* Initialize the dimensions of the video window */
380 InitWindowSize( p_vout, &p_vout->i_window_width,
381 &p_vout->i_window_height );
383 /* Create the vout thread */
384 p_vout->p_module = module_Need( p_vout,
385 ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
386 "video filter" : "video output", psz_plugin, 0 );
388 if( psz_plugin ) free( psz_plugin );
389 if( p_vout->p_module == NULL )
391 msg_Err( p_vout, "no suitable vout module" );
392 vlc_object_detach( p_vout );
393 vlc_object_destroy( p_vout );
397 /* Create a few object variables for interface interaction */
398 var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
399 text.psz_string = _("Deinterlace");
400 var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
401 val.psz_string = ""; text.psz_string = _("Disable");
402 var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
403 val.psz_string = "discard"; text.psz_string = _("Discard");
404 var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
405 val.psz_string = "blend"; text.psz_string = _("Blend");
406 var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
407 val.psz_string = "mean"; text.psz_string = _("Mean");
408 var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
409 val.psz_string = "bob"; text.psz_string = _("Bob");
410 var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
411 val.psz_string = "linear"; text.psz_string = _("Linear");
412 var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
413 if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
415 var_Set( p_vout, "deinterlace", val );
416 if( val.psz_string ) free( val.psz_string );
418 var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
421 var_Create( p_vout, "filter", VLC_VAR_STRING );
422 text.psz_string = _("Filters");
423 var_Change( p_vout, "filter", VLC_VAR_SETTEXT, &text, NULL );
424 var_Change( p_vout, "filter", VLC_VAR_INHERITVALUE, &val, NULL );
427 var_Set( p_vout, "filter", val );
428 free( val.psz_string );
430 var_AddCallback( p_vout, "filter", FilterCallback, NULL );
432 /* Calculate delay created by internal caching */
433 p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
434 VLC_OBJECT_INPUT, FIND_ANYWHERE );
437 p_vout->i_pts_delay = p_input_thread->i_pts_delay;
438 vlc_object_release( p_input_thread );
442 p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
445 if( vlc_thread_create( p_vout, "video output", RunThread,
446 VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
448 msg_Err( p_vout, "out of memory" );
449 module_Unneed( p_vout, p_vout->p_module );
450 vlc_object_detach( p_vout );
451 vlc_object_destroy( p_vout );
455 if( p_vout->b_error )
457 msg_Err( p_vout, "video output creation failed" );
459 /* Make sure the thread is destroyed */
460 p_vout->b_die = VLC_TRUE;
462 vlc_thread_join( p_vout );
464 vlc_object_detach( p_vout );
465 vlc_object_destroy( p_vout );
472 /*****************************************************************************
473 * vout_Destroy: destroys a previously created video output
474 *****************************************************************************
475 * Destroy a terminated thread.
476 * The function will request a destruction of the specified thread. If pi_error
477 * is NULL, it will return once the thread is destroyed. Else, it will be
478 * update using one of the THREAD_* constants.
479 *****************************************************************************/
480 void vout_Destroy( vout_thread_t *p_vout )
482 vlc_object_t *p_playlist;
484 /* Request thread destruction */
485 p_vout->b_die = VLC_TRUE;
486 vlc_thread_join( p_vout );
488 var_Destroy( p_vout, "intf-change" );
490 p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
493 if( p_vout->psz_filter_chain ) free( p_vout->psz_filter_chain );
496 vlc_object_destroy( p_vout );
498 /* If it was the last vout, tell the interface to show up */
499 if( p_playlist != NULL )
501 vout_thread_t *p_another_vout = vlc_object_find( p_playlist,
502 VLC_OBJECT_VOUT, FIND_ANYWHERE );
503 if( p_another_vout == NULL )
506 val.b_bool = VLC_TRUE;
507 var_Set( p_playlist, "intf-show", val );
511 vlc_object_release( p_another_vout );
513 vlc_object_release( p_playlist );
517 /*****************************************************************************
518 * InitThread: initialize video output thread
519 *****************************************************************************
520 * This function is called from RunThread and performs the second step of the
521 * initialization. It returns 0 on success. Note that the thread's flag are not
522 * modified inside this function.
523 *****************************************************************************/
524 static int InitThread( vout_thread_t *p_vout )
526 int i, i_aspect_x, i_aspect_y;
528 vlc_mutex_lock( &p_vout->change_lock );
534 /* Initialize output method, it allocates direct buffers for us */
535 if( p_vout->pf_init( p_vout ) )
537 vlc_mutex_unlock( &p_vout->change_lock );
541 if( !I_OUTPUTPICTURES )
543 msg_Err( p_vout, "plugin was unable to allocate at least "
544 "one direct buffer" );
545 p_vout->pf_end( p_vout );
546 vlc_mutex_unlock( &p_vout->change_lock );
550 if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
552 msg_Err( p_vout, "plugin allocated too many direct buffers, "
553 "our internal buffers must have overflown." );
554 p_vout->pf_end( p_vout );
555 vlc_mutex_unlock( &p_vout->change_lock );
559 msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
562 if( !p_vout->psz_filter_chain )
564 char *psz_aspect = config_GetPsz( p_vout, "pixel-ratio" );
568 int i_new_aspect = p_vout->output.i_width * VOUT_ASPECT_FACTOR
570 / p_vout->output.i_height;
573 if( i_new_aspect && i_new_aspect != p_vout->output.i_aspect )
575 AspectRatio( i_new_aspect, &i_aspect_x, &i_aspect_y );
577 msg_Dbg( p_vout, "output ratio forced to %i:%i\n",
578 i_aspect_x, i_aspect_y );
579 p_vout->output.i_aspect = i_new_aspect;
585 AspectRatio( p_vout->render.i_aspect, &i_aspect_x, &i_aspect_y );
587 "picture in %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
588 p_vout->render.i_width, p_vout->render.i_height,
589 p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma,
590 i_aspect_x, i_aspect_y );
592 AspectRatio( p_vout->output.i_aspect, &i_aspect_x, &i_aspect_y );
594 "picture out %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
595 p_vout->output.i_width, p_vout->output.i_height,
596 p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma,
597 i_aspect_x, i_aspect_y );
599 /* Calculate shifts from system-updated masks */
600 MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
601 p_vout->output.i_rmask );
602 MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
603 p_vout->output.i_gmask );
604 MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
605 p_vout->output.i_bmask );
607 /* Check whether we managed to create direct buffers similar to
608 * the render buffers, ie same size and chroma */
609 if( ( p_vout->output.i_width == p_vout->render.i_width )
610 && ( p_vout->output.i_height == p_vout->render.i_height )
611 && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
613 /* Cool ! We have direct buffers, we can ask the decoder to
614 * directly decode into them ! Map the first render buffers to
615 * the first direct buffers, but keep the first direct buffer
616 * for memcpy operations */
617 p_vout->b_direct = 1;
619 for( i = 1; i < VOUT_MAX_PICTURES; i++ )
621 if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
622 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
623 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
625 /* We have enough direct buffers so there's no need to
626 * try to use system memory buffers. */
629 PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
633 msg_Dbg( p_vout, "direct render, mapping "
634 "render pictures 0-%i to system pictures 1-%i",
635 VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
639 /* Rats... Something is wrong here, we could not find an output
640 * plugin able to directly render what we decode. See if we can
641 * find a chroma plugin to do the conversion */
642 p_vout->b_direct = 0;
644 /* Choose the best module */
645 p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL, 0 );
647 if( p_vout->chroma.p_module == NULL )
649 msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
650 (char*)&p_vout->render.i_chroma,
651 (char*)&p_vout->output.i_chroma );
652 p_vout->pf_end( p_vout );
653 vlc_mutex_unlock( &p_vout->change_lock );
657 msg_Dbg( p_vout, "indirect render, mapping "
658 "render pictures 0-%i to system pictures %i-%i",
659 VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
660 I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
662 /* Append render buffers after the direct buffers */
663 for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
665 PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
668 /* Check if we have enough render pictures */
669 if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
674 /* Link pictures back to their heap */
675 for( i = 0 ; i < I_RENDERPICTURES ; i++ )
677 PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
680 for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
682 PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
685 /* XXX XXX mark thread ready */
689 /*****************************************************************************
690 * RunThread: video output thread
691 *****************************************************************************
692 * Video output thread. This function does only returns when the thread is
693 * terminated. It handles the pictures arriving in the video heap and the
694 * display device events.
695 *****************************************************************************/
696 static void RunThread( vout_thread_t *p_vout)
698 int i_index; /* index in heap */
699 int i_idle_loops = 0; /* loops without displaying a picture */
700 mtime_t current_date; /* current date */
701 mtime_t display_date; /* display date */
703 picture_t * p_picture; /* picture pointer */
704 picture_t * p_last_picture = NULL; /* last picture */
705 picture_t * p_directbuffer; /* direct buffer to display */
707 subpicture_t * p_subpic; /* subpicture pointer */
712 p_vout->b_error = InitThread( p_vout );
714 /* signal the creation of the vout */
715 vlc_thread_ready( p_vout );
717 if( p_vout->b_error )
719 /* Destroy thread structures allocated by Create and InitThread */
720 DestroyThread( p_vout );
725 * Main loop - it is not executed if an error occurred during
728 while( (!p_vout->b_die) && (!p_vout->b_error) )
730 /* Initialize loop variables */
733 current_date = mdate();
737 if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
739 msg_Dbg( p_vout, "picture heap: %d/%d",
740 I_RENDERPICTURES, p_vout->i_heap_size );
745 * Find the picture to display (the one with the earliest date).
746 * This operation does not need lock, since only READY_PICTUREs
748 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
750 if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
751 && ( (p_picture == NULL) ||
752 (PP_RENDERPICTURE[i_index]->date < display_date) ) )
754 p_picture = PP_RENDERPICTURE[i_index];
755 display_date = p_picture->date;
761 /* If we met the last picture, parse again to see whether there is
762 * a more appropriate one. */
763 if( p_picture == p_last_picture )
765 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
767 if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
768 && (PP_RENDERPICTURE[i_index] != p_last_picture)
769 && ((p_picture == p_last_picture) ||
770 (PP_RENDERPICTURE[i_index]->date < display_date)) )
772 p_picture = PP_RENDERPICTURE[i_index];
773 display_date = p_picture->date;
778 /* If we found better than the last picture, destroy it */
779 if( p_last_picture && p_picture != p_last_picture )
781 vlc_mutex_lock( &p_vout->picture_lock );
782 if( p_last_picture->i_refcount )
784 p_last_picture->i_status = DISPLAYED_PICTURE;
788 p_last_picture->i_status = DESTROYED_PICTURE;
789 p_vout->i_heap_size--;
791 vlc_mutex_unlock( &p_vout->picture_lock );
792 p_last_picture = NULL;
795 /* Compute FPS rate */
796 p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
799 if( !p_picture->b_force &&
800 p_picture != p_last_picture &&
801 display_date < current_date + p_vout->render_time )
803 /* Picture is late: it will be destroyed and the thread
804 * will directly choose the next picture */
805 vlc_mutex_lock( &p_vout->picture_lock );
806 if( p_picture->i_refcount )
808 /* Pretend we displayed the picture, but don't destroy
809 * it since the decoder might still need it. */
810 p_picture->i_status = DISPLAYED_PICTURE;
814 /* Destroy the picture without displaying it */
815 p_picture->i_status = DESTROYED_PICTURE;
816 p_vout->i_heap_size--;
818 msg_Warn( p_vout, "late picture skipped ("I64Fd")",
819 current_date - display_date );
820 vlc_mutex_unlock( &p_vout->picture_lock );
826 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
828 /* Picture is waaay too early: it will be destroyed */
829 vlc_mutex_lock( &p_vout->picture_lock );
830 if( p_picture->i_refcount )
832 /* Pretend we displayed the picture, but don't destroy
833 * it since the decoder might still need it. */
834 p_picture->i_status = DISPLAYED_PICTURE;
838 /* Destroy the picture without displaying it */
839 p_picture->i_status = DESTROYED_PICTURE;
840 p_vout->i_heap_size--;
842 msg_Warn( p_vout, "vout warning: early picture skipped "
843 "("I64Fd")", display_date - current_date
844 - p_vout->i_pts_delay );
845 vlc_mutex_unlock( &p_vout->picture_lock );
850 if( display_date > current_date + VOUT_DISPLAY_DELAY )
852 /* A picture is ready to be rendered, but its rendering date
853 * is far from the current one so the thread will perform an
854 * empty loop as if no picture were found. The picture state
859 else if( p_picture == p_last_picture )
861 /* We are asked to repeat the previous picture, but we first
862 * wait for a couple of idle loops */
863 if( i_idle_loops < 4 )
870 /* We set the display date to something high, otherwise
871 * we'll have lots of problems with late pictures */
872 display_date = current_date + p_vout->render_time;
877 if( p_picture == NULL )
883 * Check for subpictures to display
885 p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date );
890 p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
893 * Call the plugin-specific rendering method if there is one
895 if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
897 /* Render the direct buffer returned by vout_RenderPicture */
898 p_vout->pf_render( p_vout, p_directbuffer );
904 if( display_date != 0 && p_directbuffer != NULL )
906 mtime_t current_render_time = mdate() - current_date;
907 /* if render time is very large we don't include it in the mean */
908 if( current_render_time < p_vout->render_time +
911 /* Store render time using a sliding mean weighting to
912 * current value in a 3 to 1 ratio*/
913 p_vout->render_time *= 3;
914 p_vout->render_time += current_render_time;
915 p_vout->render_time >>= 2;
919 /* Give back change lock */
920 vlc_mutex_unlock( &p_vout->change_lock );
922 /* Sleep a while or until a given date */
923 if( display_date != 0 )
925 /* If there are filters in the chain, better give them the picture
927 if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
929 mwait( display_date - VOUT_MWAIT_TOLERANCE );
934 msleep( VOUT_IDLE_SLEEP );
937 /* On awakening, take back lock and send immediately picture
939 vlc_mutex_lock( &p_vout->change_lock );
942 * Display the previously rendered picture
944 if( p_picture != NULL && p_directbuffer != NULL )
946 /* Display the direct buffer returned by vout_RenderPicture */
947 if( p_vout->pf_display )
949 p_vout->pf_display( p_vout, p_directbuffer );
952 /* Tell the vout this was the last picture and that it does not
953 * need to be forced anymore. */
954 p_last_picture = p_picture;
955 p_last_picture->b_force = 0;
958 if( p_picture != NULL )
960 /* Reinitialize idle loop count */
965 * Check events and manage thread
967 if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
969 /* A fatal error occurred, and the thread must terminate
970 * immediately, without displaying anything - setting b_error to 1
971 * causes the immediate end of the main while() loop. */
975 if( p_vout->i_changes & VOUT_SIZE_CHANGE )
977 /* this must only happen when the vout plugin is incapable of
978 * rescaling the picture itself. In this case we need to destroy
979 * the current picture buffers and recreate new ones with the right
983 p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
985 p_vout->pf_end( p_vout );
986 for( i = 0; i < I_OUTPUTPICTURES; i++ )
987 p_vout->p_picture[ i ].i_status = FREE_PICTURE;
989 I_OUTPUTPICTURES = 0;
990 if( p_vout->pf_init( p_vout ) )
992 msg_Err( p_vout, "cannot resize display" );
993 /* FIXME: pf_end will be called again in EndThread() */
997 /* Need to reinitialise the chroma plugin */
998 if( p_vout->chroma.p_module )
1000 if( p_vout->chroma.p_module->pf_deactivate )
1001 p_vout->chroma.p_module->pf_deactivate( VLC_OBJECT(p_vout) );
1002 p_vout->chroma.p_module->pf_activate( VLC_OBJECT(p_vout) );
1006 if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1008 /* This happens when the picture buffers need to be recreated.
1009 * This is useful on multimonitor displays for instance.
1011 * Warning: This only works when the vout creates only 1 picture
1013 p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1015 if( !p_vout->b_direct )
1017 module_Unneed( p_vout, p_vout->chroma.p_module );
1020 vlc_mutex_lock( &p_vout->picture_lock );
1022 p_vout->pf_end( p_vout );
1024 I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1026 p_vout->b_error = InitThread( p_vout );
1028 vlc_mutex_unlock( &p_vout->picture_lock );
1033 * Error loop - wait until the thread destruction is requested
1035 if( p_vout->b_error )
1037 ErrorThread( p_vout );
1041 EndThread( p_vout );
1043 /* Destroy thread structures allocated by CreateThread */
1044 DestroyThread( p_vout );
1047 /*****************************************************************************
1048 * ErrorThread: RunThread() error loop
1049 *****************************************************************************
1050 * This function is called when an error occurred during thread main's loop.
1051 * The thread can still receive feed, but must be ready to terminate as soon
1053 *****************************************************************************/
1054 static void ErrorThread( vout_thread_t *p_vout )
1056 /* Wait until a `die' order */
1057 while( !p_vout->b_die )
1060 msleep( VOUT_IDLE_SLEEP );
1064 /*****************************************************************************
1065 * EndThread: thread destruction
1066 *****************************************************************************
1067 * This function is called when the thread ends after a sucessful
1068 * initialization. It frees all resources allocated by InitThread.
1069 *****************************************************************************/
1070 static void EndThread( vout_thread_t *p_vout )
1072 int i_index; /* index in heap */
1076 struct tms cpu_usage;
1077 times( &cpu_usage );
1079 msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1080 cpu_usage.tms_utime, cpu_usage.tms_stime );
1084 if( !p_vout->b_direct )
1086 module_Unneed( p_vout, p_vout->chroma.p_module );
1089 /* Destroy all remaining pictures */
1090 for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1092 if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1094 free( p_vout->p_picture[i_index].p_data_orig );
1098 /* Destroy subpicture unit */
1099 spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), VLC_FALSE );
1100 spu_Destroy( p_vout->p_spu );
1102 /* Destroy translation tables */
1103 p_vout->pf_end( p_vout );
1105 /* Release the change lock */
1106 vlc_mutex_unlock( &p_vout->change_lock );
1109 /*****************************************************************************
1110 * DestroyThread: thread destruction
1111 *****************************************************************************
1112 * This function is called when the thread ends. It frees all ressources
1113 * allocated by CreateThread. Status is available at this stage.
1114 *****************************************************************************/
1115 static void DestroyThread( vout_thread_t *p_vout )
1117 /* Destroy the locks */
1118 vlc_mutex_destroy( &p_vout->picture_lock );
1119 vlc_mutex_destroy( &p_vout->change_lock );
1121 /* Release the module */
1122 if( p_vout && p_vout->p_module )
1124 module_Unneed( p_vout, p_vout->p_module );
1128 /* following functions are local */
1130 static int ReduceHeight( int i_ratio )
1132 int i_dummy = VOUT_ASPECT_FACTOR;
1140 /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1141 while( !(i_ratio & 1) && !(i_dummy & 1) )
1148 while( !(i_ratio % 3) && !(i_dummy % 3) )
1155 while( !(i_ratio % 5) && !(i_dummy % 5) )
1165 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1167 unsigned int i_pgcd = ReduceHeight( i_aspect );
1168 *i_aspect_x = i_aspect / i_pgcd;
1169 *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1172 /*****************************************************************************
1173 * BinaryLog: computes the base 2 log of a binary value
1174 *****************************************************************************
1175 * This functions is used by MaskToShift, to get a bit index from a binary
1177 *****************************************************************************/
1178 static int BinaryLog( uint32_t i )
1182 if( i == 0 ) return -31337;
1184 if( i & 0xffff0000 ) i_log += 16;
1185 if( i & 0xff00ff00 ) i_log += 8;
1186 if( i & 0xf0f0f0f0 ) i_log += 4;
1187 if( i & 0xcccccccc ) i_log += 2;
1188 if( i & 0xaaaaaaaa ) i_log += 1;
1193 /*****************************************************************************
1194 * MaskToShift: transform a color mask into right and left shifts
1195 *****************************************************************************
1196 * This function is used for obtaining color shifts from masks.
1197 *****************************************************************************/
1198 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1200 uint32_t i_low, i_high; /* lower hand higher bits of the mask */
1204 *pi_left = *pi_right = 0;
1209 i_low = i_mask & (- (int32_t)i_mask); /* lower bit of the mask */
1210 i_high = i_mask + i_low; /* higher bit of the mask */
1212 /* Transform bits into an index */
1213 i_low = BinaryLog (i_low);
1214 i_high = BinaryLog (i_high);
1216 /* Update pointers and return */
1218 *pi_right = (8 - i_high + i_low);
1221 /*****************************************************************************
1222 * InitWindowSize: find the initial dimensions the video window should have.
1223 *****************************************************************************
1224 * This function will check the "width", "height" and "zoom" config options and
1225 * will calculate the size that the video window should have.
1226 *****************************************************************************/
1227 static void InitWindowSize( vout_thread_t *p_vout, int *pi_width,
1231 int i_width, i_height;
1234 #define FP_FACTOR 1000 /* our fixed point factor */
1236 var_Get( p_vout, "align", &val );
1237 p_vout->i_alignment = val.i_int;
1239 var_Get( p_vout, "width", &val );
1240 i_width = val.i_int;
1241 var_Get( p_vout, "height", &val );
1242 i_height = val.i_int;
1243 var_Get( p_vout, "zoom", &val );
1244 ll_zoom = (uint64_t)( FP_FACTOR * val.f_float );
1246 if( i_width > 0 && i_height > 0)
1248 *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
1249 *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
1252 else if( i_width > 0 )
1254 *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
1255 *pi_height = (int)( i_width * ll_zoom * VOUT_ASPECT_FACTOR /
1256 p_vout->render.i_aspect / FP_FACTOR );
1259 else if( i_height > 0 )
1261 *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
1262 *pi_width = (int)( i_height * ll_zoom * p_vout->render.i_aspect /
1263 VOUT_ASPECT_FACTOR / FP_FACTOR );
1267 if( p_vout->render.i_height * p_vout->render.i_aspect
1268 >= p_vout->render.i_width * VOUT_ASPECT_FACTOR )
1270 *pi_width = (int)( p_vout->render.i_height * ll_zoom
1271 * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR / FP_FACTOR );
1272 *pi_height = (int)( p_vout->render.i_height * ll_zoom / FP_FACTOR );
1276 *pi_width = (int)( p_vout->render.i_width * ll_zoom / FP_FACTOR );
1277 *pi_height = (int)( p_vout->render.i_width * ll_zoom
1278 * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect / FP_FACTOR );
1284 /*****************************************************************************
1285 * vout_VarCallback: generic callback for intf variables
1286 *****************************************************************************/
1287 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1288 vlc_value_t old_value, vlc_value_t new_value,
1291 vout_thread_t * p_vout = (vout_thread_t *)p_this;
1293 val.b_bool = VLC_TRUE;
1294 var_Set( p_vout, "intf-change", val );
1298 /*****************************************************************************
1299 * object variables callbacks: a bunch of object variables are used by the
1300 * interfaces to interact with the vout.
1301 *****************************************************************************/
1302 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1303 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1305 vout_thread_t *p_vout = (vout_thread_t *)p_this;
1306 input_thread_t *p_input;
1309 char *psz_mode = newval.psz_string;
1312 psz_filter = config_GetPsz( p_vout, "filter" );
1314 if( !psz_mode || !*psz_mode )
1316 config_PutPsz( p_vout, "filter", "" );
1320 if( !psz_filter || !*psz_filter )
1322 config_PutPsz( p_vout, "filter", "deinterlace" );
1326 if( strstr( psz_filter, "deinterlace" ) == NULL )
1328 psz_filter = realloc( psz_filter, strlen( psz_filter ) + 20 );
1329 strcat( psz_filter, ",deinterlace" );
1331 config_PutPsz( p_vout, "filter", psz_filter );
1335 if( psz_filter ) free( psz_filter );
1338 p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1340 if( !p_input ) return VLC_EGENERIC;
1342 if( psz_mode && *psz_mode )
1344 val.psz_string = psz_mode;
1345 var_Set( p_vout, "deinterlace-mode", val );
1346 /* Modify input as well because the vout might have to be restarted */
1347 var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1348 var_Set( p_input, "deinterlace-mode", val );
1351 /* Now restart current video stream */
1352 var_Get( p_input, "video-es", &val );
1353 if( val.i_int >= 0 )
1355 p_vout->b_filter_change = VLC_TRUE;
1356 var_Set( p_input, "video-es", (vlc_value_t)-VIDEO_ES );
1357 var_Set( p_input, "video-es", val );
1360 vlc_object_release( p_input );
1362 val.b_bool = VLC_TRUE;
1363 var_Set( p_vout, "intf-change", val );
1367 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1368 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1370 vout_thread_t *p_vout = (vout_thread_t *)p_this;
1371 input_thread_t *p_input;
1374 p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1379 msg_Err( p_vout, "Input not found" );
1380 return( VLC_EGENERIC );
1383 /* Now restart current video stream */
1384 var_Get( p_input, "video-es", &val );
1385 if( val.i_int >= 0 )
1387 p_vout->b_filter_change = VLC_TRUE;
1388 var_Set( p_input, "video-es", (vlc_value_t)-VIDEO_ES );
1389 var_Set( p_input, "video-es", val );
1392 vlc_object_release( p_input );
1394 val.b_bool = VLC_TRUE;
1395 var_Set( p_vout, "intf-change", val );