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"
40 #include <vlc/input.h> /* for input_thread_t and i_pts_delay */
42 #if defined( SYS_DARWIN )
43 #include "darwin_specific.h"
46 /*****************************************************************************
48 *****************************************************************************/
49 static int InitThread ( vout_thread_t * );
50 static void RunThread ( vout_thread_t * );
51 static void ErrorThread ( vout_thread_t * );
52 static void EndThread ( vout_thread_t * );
53 static void DestroyThread ( vout_thread_t * );
55 static int ReduceHeight ( int );
56 static int BinaryLog ( uint32_t );
57 static void MaskToShift ( int *, int *, uint32_t );
58 static void InitWindowSize ( vout_thread_t *, int *, int * );
60 /* Object variables callbacks */
61 static int DeinterlaceCallback( vlc_object_t *, char const *,
62 vlc_value_t, vlc_value_t, void * );
63 static int FilterCallback( vlc_object_t *, char const *,
64 vlc_value_t, vlc_value_t, void * );
69 * Set the i_aspect_x and i_aspect_y from i_aspect.
71 void vout_AspectRatio( unsigned int i_aspect,
72 /*out*/ unsigned int *i_aspect_x,
73 /*out*/ unsigned int *i_aspect_y )
75 unsigned int i_pgcd = ReduceHeight( i_aspect );
76 *i_aspect_x = i_aspect / i_pgcd;
77 *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
80 /*****************************************************************************
81 * vout_Request: find a video output thread, create one, or destroy one.
82 *****************************************************************************
83 * This function looks for a video output thread matching the current
84 * properties. If not found, it spawns a new one.
85 *****************************************************************************/
86 vout_thread_t * __vout_Request ( vlc_object_t *p_this, vout_thread_t *p_vout,
87 unsigned int i_width, unsigned int i_height,
88 vlc_fourcc_t i_chroma, unsigned int i_aspect )
90 if( !i_width || !i_height || !i_chroma )
92 /* Reattach video output to input before bailing out */
95 vlc_object_t *p_playlist;
97 p_playlist = vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
102 vout_AttachSPU( p_vout, VLC_FALSE );
103 vlc_object_detach( p_vout );
104 vlc_object_attach( p_vout, p_playlist );
106 vlc_object_release( p_playlist );
110 msg_Dbg( p_this, "cannot find playlist, destroying vout" );
111 vlc_object_detach( p_vout );
112 vout_Destroy( p_vout );
118 /* If a video output was provided, lock it, otherwise look for one. */
121 vlc_object_yield( p_vout );
125 p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
129 vlc_object_t *p_playlist;
131 p_playlist = vlc_object_find( p_this,
132 VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
135 p_vout = vlc_object_find( p_playlist,
136 VLC_OBJECT_VOUT, FIND_CHILD );
137 /* only first children of p_input for unused vout */
138 if( p_vout && p_vout->p_parent != p_playlist )
140 vlc_object_release( p_vout );
143 vlc_object_release( p_playlist );
148 /* If we now have a video output, check it has the right properties */
151 char *psz_filter_chain;
153 /* We don't directly check for the "filter" variable for obvious
154 * performance reasons. */
155 if( p_vout->b_filter_change )
157 psz_filter_chain = config_GetPsz( p_this, "filter" );
159 if( psz_filter_chain && !*psz_filter_chain )
161 free( psz_filter_chain );
162 psz_filter_chain = NULL;
164 if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
166 free( p_vout->psz_filter_chain );
167 p_vout->psz_filter_chain = NULL;
170 if( ( !psz_filter_chain && !p_vout->psz_filter_chain ) ||
171 ( psz_filter_chain && p_vout->psz_filter_chain &&
172 !strcmp( psz_filter_chain, p_vout->psz_filter_chain ) ) )
174 p_vout->b_filter_change = VLC_FALSE;
177 if( psz_filter_chain ) free( psz_filter_chain );
180 if( ( p_vout->render.i_width != i_width ) ||
181 ( p_vout->render.i_height != i_height ) ||
182 ( p_vout->render.i_chroma != i_chroma ) ||
183 ( p_vout->render.i_aspect != i_aspect
184 && !p_vout->b_override_aspect ) ||
185 p_vout->b_filter_change )
187 /* We are not interested in this format, close this vout */
188 vlc_object_detach( p_vout );
189 vlc_object_release( p_vout );
190 vout_Destroy( p_vout );
195 /* This video output is cool! Hijack it. */
196 vlc_object_detach( p_vout );
197 vlc_object_attach( p_vout, p_this );
198 vout_AttachSPU( p_vout, VLC_TRUE );
199 vlc_object_release( p_vout );
205 msg_Dbg( p_this, "no usable vout present, spawning one" );
207 p_vout = vout_Create( p_this, i_width, i_height, i_chroma, i_aspect );
213 /*****************************************************************************
214 * vout_Create: creates a new video output thread
215 *****************************************************************************
216 * This function creates a new video output thread, and returns a pointer
217 * to its description. On error, it returns NULL.
218 *****************************************************************************/
219 vout_thread_t * __vout_Create( vlc_object_t *p_parent,
220 unsigned int i_width, unsigned int i_height,
221 vlc_fourcc_t i_chroma, unsigned int i_aspect )
223 vout_thread_t * p_vout; /* thread descriptor */
224 input_thread_t * p_input_thread;
225 int i_index; /* loop variable */
227 vlc_value_t val, text;
229 /* Allocate descriptor */
230 p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
233 msg_Err( p_parent, "out of memory" );
237 /* Initialize pictures - translation tables and functions
238 * will be initialized later in InitThread */
239 for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
241 p_vout->p_picture[i_index].pf_lock = NULL;
242 p_vout->p_picture[i_index].pf_unlock = NULL;
243 p_vout->p_picture[i_index].i_status = FREE_PICTURE;
244 p_vout->p_picture[i_index].i_type = EMPTY_PICTURE;
245 p_vout->p_picture[i_index].b_slow = 0;
248 /* No images in the heap */
249 p_vout->i_heap_size = 0;
251 /* Register the default subpicture channel */
252 p_vout->p_default_channel = NULL;
253 p_vout->i_channel_count = 1;
255 /* Initialize the rendering heap */
256 I_RENDERPICTURES = 0;
257 p_vout->render.i_width = i_width;
258 p_vout->render.i_height = i_height;
259 p_vout->render.i_chroma = i_chroma;
260 p_vout->render.i_aspect = i_aspect;
262 p_vout->render.i_rmask = 0;
263 p_vout->render.i_gmask = 0;
264 p_vout->render.i_bmask = 0;
266 p_vout->render.i_last_used_pic = -1;
267 p_vout->render.b_allow_modify_pics = 1;
269 /* Zero the output heap */
270 I_OUTPUTPICTURES = 0;
271 p_vout->output.i_width = 0;
272 p_vout->output.i_height = 0;
273 p_vout->output.i_chroma = 0;
274 p_vout->output.i_aspect = 0;
276 p_vout->output.i_rmask = 0;
277 p_vout->output.i_gmask = 0;
278 p_vout->output.i_bmask = 0;
280 /* Initialize misc stuff */
281 p_vout->i_changes = 0;
283 p_vout->b_grayscale = 0;
285 p_vout->b_interface = 0;
287 p_vout->b_fullscreen = 0;
288 p_vout->i_alignment = 0;
289 p_vout->render_time = 10;
290 p_vout->c_fps_samples = 0;
291 p_vout->b_filter_change = 0;
292 p_vout->pf_control = 0;
293 p_vout->p_parent_intf = 0;
295 /* Initialize locks */
296 vlc_mutex_init( p_vout, &p_vout->picture_lock );
297 vlc_mutex_init( p_vout, &p_vout->subpicture_lock );
298 vlc_mutex_init( p_vout, &p_vout->change_lock );
300 /* Mouse coordinates */
301 var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
302 var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
303 var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
304 var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
305 var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
307 /* Attach the new object now so we can use var inheritance below */
308 vlc_object_attach( p_vout, p_parent );
310 /* Take care of some "interface/control" related initialisations */
311 vout_IntfInit( p_vout );
313 p_vout->b_override_aspect = VLC_FALSE;
315 /* If the parent is not a VOUT object, that means we are at the start of
316 * the video output pipe */
317 if( p_parent->i_object_type != VLC_OBJECT_VOUT )
319 var_Get( p_vout, "aspect-ratio", &val );
321 /* Check whether the user tried to override aspect ratio */
324 unsigned int i_new_aspect = i_aspect;
325 char *psz_parser = strchr( val.psz_string, ':' );
329 *psz_parser++ = '\0';
330 i_new_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
331 / atoi( psz_parser );
335 i_new_aspect = i_width * VOUT_ASPECT_FACTOR
336 * atof( val.psz_string )
340 free( val.psz_string );
342 if( i_new_aspect && i_new_aspect != i_aspect )
344 unsigned int i_aspect_x, i_aspect_y;
346 vout_AspectRatio( i_new_aspect, &i_aspect_x, &i_aspect_y );
348 msg_Dbg( p_vout, "overriding source aspect ratio to %i:%i",
349 i_aspect_x, i_aspect_y );
351 p_vout->render.i_aspect = i_new_aspect;
353 p_vout->b_override_aspect = VLC_TRUE;
357 /* Look for the default filter configuration */
358 var_Create( p_vout, "filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
359 var_Get( p_vout, "filter", &val );
360 p_vout->psz_filter_chain = val.psz_string;
364 /* continue the parent's filter chain */
367 psz_end = strchr( ((vout_thread_t *)p_parent)->psz_filter_chain, ':' );
368 if( psz_end && *(psz_end+1) )
369 p_vout->psz_filter_chain = strdup( psz_end+1 );
370 else p_vout->psz_filter_chain = NULL;
373 /* Choose the video output module */
374 if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
376 var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
377 var_Get( p_vout, "vout", &val );
378 psz_plugin = val.psz_string;
382 /* the filter chain is a string list of filters separated by double
386 psz_end = strchr( p_vout->psz_filter_chain, ':' );
388 psz_plugin = strndup( p_vout->psz_filter_chain,
389 psz_end - p_vout->psz_filter_chain );
390 else psz_plugin = strdup( p_vout->psz_filter_chain );
393 /* Initialize the dimensions of the video window */
394 InitWindowSize( p_vout, &p_vout->i_window_width,
395 &p_vout->i_window_height );
397 /* Create the vout thread */
398 p_vout->p_module = module_Need( p_vout,
399 ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
400 "video filter" : "video output", psz_plugin, 0 );
402 if( psz_plugin ) free( psz_plugin );
403 if( p_vout->p_module == NULL )
405 msg_Err( p_vout, "no suitable vout module" );
406 vlc_object_detach( p_vout );
407 vlc_object_destroy( p_vout );
411 /* Initialize subpicture unit */
412 vout_InitSPU( p_vout );
414 /* Create a few object variables for interface interaction */
415 var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
416 text.psz_string = _("Deinterlace");
417 var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
418 val.psz_string = ""; text.psz_string = _("Disable");
419 var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
420 val.psz_string = "discard"; text.psz_string = _("Discard");
421 var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
422 val.psz_string = "blend"; text.psz_string = _("Blend");
423 var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
424 val.psz_string = "mean"; text.psz_string = _("Mean");
425 var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
426 val.psz_string = "bob"; text.psz_string = _("Bob");
427 var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
428 val.psz_string = "linear"; text.psz_string = _("Linear");
429 var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
430 if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
432 var_Set( p_vout, "deinterlace", val );
433 if( val.psz_string ) free( val.psz_string );
435 var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
438 var_Create( p_vout, "filter", VLC_VAR_STRING );
439 text.psz_string = _("Filters");
440 var_Change( p_vout, "filter", VLC_VAR_SETTEXT, &text, NULL );
441 var_Change( p_vout, "filter", VLC_VAR_INHERITVALUE, &val, NULL );
444 var_Set( p_vout, "filter", val );
445 free( val.psz_string );
447 var_AddCallback( p_vout, "filter", FilterCallback, NULL );
449 /* Calculate delay created by internal caching */
450 p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
451 VLC_OBJECT_INPUT, FIND_ANYWHERE );
454 p_vout->i_pts_delay = p_input_thread->i_pts_delay;
455 vlc_object_release( p_input_thread );
459 p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
462 if( vlc_thread_create( p_vout, "video output", RunThread,
463 VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
465 msg_Err( p_vout, "out of memory" );
466 module_Unneed( p_vout, p_vout->p_module );
467 vlc_object_detach( p_vout );
468 vlc_object_destroy( p_vout );
472 if( p_vout->b_error )
474 msg_Err( p_vout, "video output creation failed" );
476 /* Make sure the thread is destroyed */
477 p_vout->b_die = VLC_TRUE;
479 vlc_thread_join( p_vout );
481 vlc_object_detach( p_vout );
482 vlc_object_destroy( p_vout );
489 /*****************************************************************************
490 * vout_Destroy: destroys a previously created video output
491 *****************************************************************************
492 * Destroy a terminated thread.
493 * The function will request a destruction of the specified thread. If pi_error
494 * is NULL, it will return once the thread is destroyed. Else, it will be
495 * update using one of the THREAD_* constants.
496 *****************************************************************************/
497 void vout_Destroy( vout_thread_t *p_vout )
499 vlc_object_t *p_playlist;
501 /* Request thread destruction */
502 p_vout->b_die = VLC_TRUE;
503 vlc_thread_join( p_vout );
505 var_Destroy( p_vout, "intf-change" );
507 p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
510 if( p_vout->psz_filter_chain ) free( p_vout->psz_filter_chain );
513 vlc_object_destroy( p_vout );
515 /* If it was the last vout, tell the interface to show up */
516 if( p_playlist != NULL )
518 vout_thread_t *p_another_vout = vlc_object_find( p_playlist,
519 VLC_OBJECT_VOUT, FIND_ANYWHERE );
520 if( p_another_vout == NULL )
523 val.b_bool = VLC_TRUE;
524 var_Set( p_playlist, "intf-show", val );
528 vlc_object_release( p_another_vout );
530 vlc_object_release( p_playlist );
534 /*****************************************************************************
535 * InitThread: initialize video output thread
536 *****************************************************************************
537 * This function is called from RunThread and performs the second step of the
538 * initialization. It returns 0 on success. Note that the thread's flag are not
539 * modified inside this function.
540 *****************************************************************************/
541 static int InitThread( vout_thread_t *p_vout )
544 unsigned int i_aspect_x, i_aspect_y;
546 vlc_mutex_lock( &p_vout->change_lock );
552 /* Initialize output method, it allocates direct buffers for us */
553 if( p_vout->pf_init( p_vout ) )
555 vlc_mutex_unlock( &p_vout->change_lock );
559 if( !I_OUTPUTPICTURES )
561 msg_Err( p_vout, "plugin was unable to allocate at least "
562 "one direct buffer" );
563 p_vout->pf_end( p_vout );
564 vlc_mutex_unlock( &p_vout->change_lock );
568 if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
570 msg_Err( p_vout, "plugin allocated too many direct buffers, "
571 "our internal buffers must have overflown." );
572 p_vout->pf_end( p_vout );
573 vlc_mutex_unlock( &p_vout->change_lock );
577 msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
580 if( !p_vout->psz_filter_chain )
582 char *psz_aspect = config_GetPsz( p_vout, "pixel-ratio" );
586 int i_new_aspect = p_vout->output.i_width * VOUT_ASPECT_FACTOR
588 / p_vout->output.i_height;
591 if( i_new_aspect && i_new_aspect != p_vout->output.i_aspect )
593 vout_AspectRatio( i_new_aspect, &i_aspect_x, &i_aspect_y );
595 msg_Dbg( p_vout, "output ratio forced to %i:%i\n",
596 i_aspect_x, i_aspect_y );
597 p_vout->output.i_aspect = i_new_aspect;
603 vout_AspectRatio( p_vout->render.i_aspect, &i_aspect_x, &i_aspect_y );
605 "picture in %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
606 p_vout->render.i_width, p_vout->render.i_height,
607 p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma,
608 i_aspect_x, i_aspect_y );
610 vout_AspectRatio( p_vout->output.i_aspect, &i_aspect_x, &i_aspect_y );
612 "picture out %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
613 p_vout->output.i_width, p_vout->output.i_height,
614 p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma,
615 i_aspect_x, i_aspect_y );
617 /* Calculate shifts from system-updated masks */
618 MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
619 p_vout->output.i_rmask );
620 MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
621 p_vout->output.i_gmask );
622 MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
623 p_vout->output.i_bmask );
625 /* Check whether we managed to create direct buffers similar to
626 * the render buffers, ie same size and chroma */
627 if( ( p_vout->output.i_width == p_vout->render.i_width )
628 && ( p_vout->output.i_height == p_vout->render.i_height )
629 && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
631 /* Cool ! We have direct buffers, we can ask the decoder to
632 * directly decode into them ! Map the first render buffers to
633 * the first direct buffers, but keep the first direct buffer
634 * for memcpy operations */
635 p_vout->b_direct = 1;
637 for( i = 1; i < VOUT_MAX_PICTURES; i++ )
639 if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
640 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
641 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
643 /* We have enough direct buffers so there's no need to
644 * try to use system memory buffers. */
647 PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
651 msg_Dbg( p_vout, "direct render, mapping "
652 "render pictures 0-%i to system pictures 1-%i",
653 VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
657 /* Rats... Something is wrong here, we could not find an output
658 * plugin able to directly render what we decode. See if we can
659 * find a chroma plugin to do the conversion */
660 p_vout->b_direct = 0;
662 /* Choose the best module */
663 p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL, 0 );
665 if( p_vout->chroma.p_module == NULL )
667 msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
668 (char*)&p_vout->render.i_chroma,
669 (char*)&p_vout->output.i_chroma );
670 p_vout->pf_end( p_vout );
671 vlc_mutex_unlock( &p_vout->change_lock );
675 msg_Dbg( p_vout, "indirect render, mapping "
676 "render pictures 0-%i to system pictures %i-%i",
677 VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
678 I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
680 /* Append render buffers after the direct buffers */
681 for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
683 PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
686 /* Check if we have enough render pictures */
687 if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
692 /* Link pictures back to their heap */
693 for( i = 0 ; i < I_RENDERPICTURES ; i++ )
695 PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
698 for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
700 PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
703 /* XXX XXX mark thread ready */
707 /*****************************************************************************
708 * RunThread: video output thread
709 *****************************************************************************
710 * Video output thread. This function does only returns when the thread is
711 * terminated. It handles the pictures arriving in the video heap and the
712 * display device events.
713 *****************************************************************************/
714 static void RunThread( vout_thread_t *p_vout)
716 int i_index; /* index in heap */
717 int i_idle_loops = 0; /* loops without displaying a picture */
718 mtime_t current_date; /* current date */
719 mtime_t display_date; /* display date */
721 picture_t * p_picture; /* picture pointer */
722 picture_t * p_last_picture = NULL; /* last picture */
723 picture_t * p_directbuffer; /* direct buffer to display */
725 subpicture_t * p_subpic; /* subpicture pointer */
730 p_vout->b_error = InitThread( p_vout );
732 /* signal the creation of the vout */
733 vlc_thread_ready( p_vout );
735 if( p_vout->b_error )
737 /* Destroy thread structures allocated by Create and InitThread */
738 DestroyThread( p_vout );
743 * Main loop - it is not executed if an error occurred during
746 while( (!p_vout->b_die) && (!p_vout->b_error) )
748 /* Initialize loop variables */
751 current_date = mdate();
755 if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
757 msg_Dbg( p_vout, "picture heap: %d/%d",
758 I_RENDERPICTURES, p_vout->i_heap_size );
763 * Find the picture to display (the one with the earliest date).
764 * This operation does not need lock, since only READY_PICTUREs
766 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
768 if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
769 && ( (p_picture == NULL) ||
770 (PP_RENDERPICTURE[i_index]->date < display_date) ) )
772 p_picture = PP_RENDERPICTURE[i_index];
773 display_date = p_picture->date;
779 /* If we met the last picture, parse again to see whether there is
780 * a more appropriate one. */
781 if( p_picture == p_last_picture )
783 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
785 if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
786 && (PP_RENDERPICTURE[i_index] != p_last_picture)
787 && ((p_picture == p_last_picture) ||
788 (PP_RENDERPICTURE[i_index]->date < display_date)) )
790 p_picture = PP_RENDERPICTURE[i_index];
791 display_date = p_picture->date;
796 /* If we found better than the last picture, destroy it */
797 if( p_last_picture && p_picture != p_last_picture )
799 vlc_mutex_lock( &p_vout->picture_lock );
800 if( p_last_picture->i_refcount )
802 p_last_picture->i_status = DISPLAYED_PICTURE;
806 p_last_picture->i_status = DESTROYED_PICTURE;
807 p_vout->i_heap_size--;
809 vlc_mutex_unlock( &p_vout->picture_lock );
810 p_last_picture = NULL;
813 /* Compute FPS rate */
814 p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
817 if( !p_picture->b_force &&
818 p_picture != p_last_picture &&
819 display_date < current_date + p_vout->render_time )
821 /* Picture is late: it will be destroyed and the thread
822 * will directly choose the next picture */
823 vlc_mutex_lock( &p_vout->picture_lock );
824 if( p_picture->i_refcount )
826 /* Pretend we displayed the picture, but don't destroy
827 * it since the decoder might still need it. */
828 p_picture->i_status = DISPLAYED_PICTURE;
832 /* Destroy the picture without displaying it */
833 p_picture->i_status = DESTROYED_PICTURE;
834 p_vout->i_heap_size--;
836 msg_Warn( p_vout, "late picture skipped ("I64Fd")",
837 current_date - display_date );
838 vlc_mutex_unlock( &p_vout->picture_lock );
844 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
846 /* Picture is waaay too early: it will be destroyed */
847 vlc_mutex_lock( &p_vout->picture_lock );
848 if( p_picture->i_refcount )
850 /* Pretend we displayed the picture, but don't destroy
851 * it since the decoder might still need it. */
852 p_picture->i_status = DISPLAYED_PICTURE;
856 /* Destroy the picture without displaying it */
857 p_picture->i_status = DESTROYED_PICTURE;
858 p_vout->i_heap_size--;
860 msg_Warn( p_vout, "vout warning: early picture skipped "
861 "("I64Fd")", display_date - current_date
862 - p_vout->i_pts_delay );
863 vlc_mutex_unlock( &p_vout->picture_lock );
868 if( display_date > current_date + VOUT_DISPLAY_DELAY )
870 /* A picture is ready to be rendered, but its rendering date
871 * is far from the current one so the thread will perform an
872 * empty loop as if no picture were found. The picture state
877 else if( p_picture == p_last_picture )
879 /* We are asked to repeat the previous picture, but we first
880 * wait for a couple of idle loops */
881 if( i_idle_loops < 4 )
888 /* We set the display date to something high, otherwise
889 * we'll have lots of problems with late pictures */
890 display_date = current_date + p_vout->render_time;
895 if( p_picture == NULL )
901 * Check for subpictures to display
903 p_subpic = vout_SortSubPictures( p_vout, display_date );
908 p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
911 * Call the plugin-specific rendering method if there is one
913 if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
915 /* Render the direct buffer returned by vout_RenderPicture */
916 p_vout->pf_render( p_vout, p_directbuffer );
922 if( display_date != 0 && p_directbuffer != NULL )
924 mtime_t current_render_time = mdate() - current_date;
925 /* if render time is very large we don't include it in the mean */
926 if( current_render_time < p_vout->render_time +
929 /* Store render time using a sliding mean weighting to
930 * current value in a 3 to 1 ratio*/
931 p_vout->render_time *= 3;
932 p_vout->render_time += current_render_time;
933 p_vout->render_time >>= 2;
937 /* Give back change lock */
938 vlc_mutex_unlock( &p_vout->change_lock );
940 /* Sleep a while or until a given date */
941 if( display_date != 0 )
943 /* If there are filters in the chain, better give them the picture
945 if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
947 mwait( display_date - VOUT_MWAIT_TOLERANCE );
952 msleep( VOUT_IDLE_SLEEP );
955 /* On awakening, take back lock and send immediately picture
957 vlc_mutex_lock( &p_vout->change_lock );
960 * Display the previously rendered picture
962 if( p_picture != NULL && p_directbuffer != NULL )
964 /* Display the direct buffer returned by vout_RenderPicture */
965 if( p_vout->pf_display )
967 p_vout->pf_display( p_vout, p_directbuffer );
970 /* Reinitialize idle loop count */
973 /* Tell the vout this was the last picture and that it does not
974 * need to be forced anymore. */
975 p_last_picture = p_picture;
976 p_last_picture->b_force = 0;
980 * Check events and manage thread
982 if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
984 /* A fatal error occurred, and the thread must terminate
985 * immediately, without displaying anything - setting b_error to 1
986 * causes the immediate end of the main while() loop. */
990 if( p_vout->i_changes & VOUT_SIZE_CHANGE )
992 /* this must only happen when the vout plugin is incapable of
993 * rescaling the picture itself. In this case we need to destroy
994 * the current picture buffers and recreate new ones with the right
998 p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1000 p_vout->pf_end( p_vout );
1001 for( i = 0; i < I_OUTPUTPICTURES; i++ )
1002 p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1004 I_OUTPUTPICTURES = 0;
1005 if( p_vout->pf_init( p_vout ) )
1007 msg_Err( p_vout, "cannot resize display" );
1008 /* FIXME: pf_end will be called again in EndThread() */
1009 p_vout->b_error = 1;
1012 /* Need to reinitialise the chroma plugin */
1013 if( p_vout->chroma.p_module )
1015 if( p_vout->chroma.p_module->pf_deactivate )
1016 p_vout->chroma.p_module->pf_deactivate( VLC_OBJECT(p_vout) );
1017 p_vout->chroma.p_module->pf_activate( VLC_OBJECT(p_vout) );
1021 if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1023 /* This happens when the picture buffers need to be recreated.
1024 * This is useful on multimonitor displays for instance.
1026 * Warning: This only works when the vout creates only 1 picture
1028 p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1030 if( !p_vout->b_direct )
1032 module_Unneed( p_vout, p_vout->chroma.p_module );
1035 vlc_mutex_lock( &p_vout->picture_lock );
1037 p_vout->pf_end( p_vout );
1039 I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1041 p_vout->b_error = InitThread( p_vout );
1043 vlc_mutex_unlock( &p_vout->picture_lock );
1048 * Error loop - wait until the thread destruction is requested
1050 if( p_vout->b_error )
1052 ErrorThread( p_vout );
1056 EndThread( p_vout );
1058 /* Destroy thread structures allocated by CreateThread */
1059 DestroyThread( p_vout );
1062 /*****************************************************************************
1063 * ErrorThread: RunThread() error loop
1064 *****************************************************************************
1065 * This function is called when an error occurred during thread main's loop.
1066 * The thread can still receive feed, but must be ready to terminate as soon
1068 *****************************************************************************/
1069 static void ErrorThread( vout_thread_t *p_vout )
1071 /* Wait until a `die' order */
1072 while( !p_vout->b_die )
1075 msleep( VOUT_IDLE_SLEEP );
1079 /*****************************************************************************
1080 * EndThread: thread destruction
1081 *****************************************************************************
1082 * This function is called when the thread ends after a sucessful
1083 * initialization. It frees all resources allocated by InitThread.
1084 *****************************************************************************/
1085 static void EndThread( vout_thread_t *p_vout )
1087 int i_index; /* index in heap */
1091 struct tms cpu_usage;
1092 times( &cpu_usage );
1094 msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1095 cpu_usage.tms_utime, cpu_usage.tms_stime );
1099 if( !p_vout->b_direct )
1101 module_Unneed( p_vout, p_vout->chroma.p_module );
1104 /* Destroy all remaining pictures */
1105 for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1107 if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1109 free( p_vout->p_picture[i_index].p_data_orig );
1113 /* Destroy subpicture unit */
1114 vout_DestroySPU( p_vout );
1116 /* Destroy translation tables */
1117 p_vout->pf_end( p_vout );
1119 /* Release the change lock */
1120 vlc_mutex_unlock( &p_vout->change_lock );
1123 /*****************************************************************************
1124 * DestroyThread: thread destruction
1125 *****************************************************************************
1126 * This function is called when the thread ends. It frees all ressources
1127 * allocated by CreateThread. Status is available at this stage.
1128 *****************************************************************************/
1129 static void DestroyThread( vout_thread_t *p_vout )
1131 /* Destroy the locks */
1132 vlc_mutex_destroy( &p_vout->picture_lock );
1133 vlc_mutex_destroy( &p_vout->subpicture_lock );
1134 vlc_mutex_destroy( &p_vout->change_lock );
1136 /* Release the module */
1137 if( p_vout && p_vout->p_module )
1139 module_Unneed( p_vout, p_vout->p_module );
1143 /* following functions are local */
1145 static int ReduceHeight( int i_ratio )
1147 int i_dummy = VOUT_ASPECT_FACTOR;
1155 /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1156 while( !(i_ratio & 1) && !(i_dummy & 1) )
1163 while( !(i_ratio % 3) && !(i_dummy % 3) )
1170 while( !(i_ratio % 5) && !(i_dummy % 5) )
1180 /*****************************************************************************
1181 * BinaryLog: computes the base 2 log of a binary value
1182 *****************************************************************************
1183 * This functions is used by MaskToShift, to get a bit index from a binary
1185 *****************************************************************************/
1186 static int BinaryLog( uint32_t i )
1190 if( i == 0 ) return -31337;
1192 if( i & 0xffff0000 ) i_log += 16;
1193 if( i & 0xff00ff00 ) i_log += 8;
1194 if( i & 0xf0f0f0f0 ) i_log += 4;
1195 if( i & 0xcccccccc ) i_log += 2;
1196 if( i & 0xaaaaaaaa ) i_log += 1;
1201 /*****************************************************************************
1202 * MaskToShift: transform a color mask into right and left shifts
1203 *****************************************************************************
1204 * This function is used for obtaining color shifts from masks.
1205 *****************************************************************************/
1206 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1208 uint32_t i_low, i_high; /* lower hand higher bits of the mask */
1212 *pi_left = *pi_right = 0;
1217 i_low = i_mask & (- (int32_t)i_mask); /* lower bit of the mask */
1218 i_high = i_mask + i_low; /* higher bit of the mask */
1220 /* Transform bits into an index */
1221 i_low = BinaryLog (i_low);
1222 i_high = BinaryLog (i_high);
1224 /* Update pointers and return */
1226 *pi_right = (8 - i_high + i_low);
1229 /*****************************************************************************
1230 * InitWindowSize: find the initial dimensions the video window should have.
1231 *****************************************************************************
1232 * This function will check the "width", "height" and "zoom" config options and
1233 * will calculate the size that the video window should have.
1234 *****************************************************************************/
1235 static void InitWindowSize( vout_thread_t *p_vout, int *pi_width,
1239 int i_width, i_height;
1242 #define FP_FACTOR 1000 /* our fixed point factor */
1244 var_Get( p_vout, "align", &val );
1245 p_vout->i_alignment = val.i_int;
1247 var_Get( p_vout, "width", &val );
1248 i_width = val.i_int;
1249 var_Get( p_vout, "height", &val );
1250 i_height = val.i_int;
1251 var_Get( p_vout, "zoom", &val );
1252 ll_zoom = (uint64_t)( FP_FACTOR * val.f_float );
1254 if( i_width > 0 && i_height > 0)
1256 *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
1257 *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
1260 else if( i_width > 0 )
1262 *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
1263 *pi_height = (int)( i_width * ll_zoom * VOUT_ASPECT_FACTOR /
1264 p_vout->render.i_aspect / FP_FACTOR );
1267 else if( i_height > 0 )
1269 *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
1270 *pi_width = (int)( i_height * ll_zoom * p_vout->render.i_aspect /
1271 VOUT_ASPECT_FACTOR / FP_FACTOR );
1275 if( p_vout->render.i_height * p_vout->render.i_aspect
1276 >= p_vout->render.i_width * VOUT_ASPECT_FACTOR )
1278 *pi_width = (int)( p_vout->render.i_height * ll_zoom
1279 * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR / FP_FACTOR );
1280 *pi_height = (int)( p_vout->render.i_height * ll_zoom / FP_FACTOR );
1284 *pi_width = (int)( p_vout->render.i_width * ll_zoom / FP_FACTOR );
1285 *pi_height = (int)( p_vout->render.i_width * ll_zoom
1286 * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect / FP_FACTOR );
1292 /*****************************************************************************
1293 * vout_VarCallback: generic callback for intf variables
1294 *****************************************************************************/
1295 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1296 vlc_value_t old_value, vlc_value_t new_value,
1299 vout_thread_t * p_vout = (vout_thread_t *)p_this;
1301 val.b_bool = VLC_TRUE;
1302 var_Set( p_vout, "intf-change", val );
1306 /*****************************************************************************
1307 * object variables callbacks: a bunch of object variables are used by the
1308 * interfaces to interact with the vout.
1309 *****************************************************************************/
1310 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1311 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1313 vout_thread_t *p_vout = (vout_thread_t *)p_this;
1314 input_thread_t *p_input;
1317 char *psz_mode = newval.psz_string;
1321 psz_filter = config_GetPsz( p_vout, "filter" );
1323 if( !psz_mode || !*psz_mode )
1325 config_PutPsz( p_vout, "filter", "" );
1329 if( !psz_filter || !*psz_filter )
1331 config_PutPsz( p_vout, "filter", "deinterlace" );
1335 if( strstr( psz_filter, "deinterlace" ) == NULL )
1337 psz_filter = realloc( psz_filter, strlen( psz_filter ) + 20 );
1338 strcat( psz_filter, ",deinterlace" );
1340 config_PutPsz( p_vout, "filter", psz_filter );
1344 if( psz_filter ) free( psz_filter );
1347 p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1349 if( !p_input ) return VLC_EGENERIC;
1351 if( psz_mode && *psz_mode )
1353 val.psz_string = psz_mode;
1354 var_Set( p_vout, "deinterlace-mode", val );
1355 /* Modify input as well because the vout might have to be restarted */
1356 var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1357 var_Set( p_input, "deinterlace-mode", val );
1360 /* FIXME FIXME input2 --fenrir */
1362 /* now restart all video streams */
1363 vlc_mutex_lock( &p_input->stream.stream_lock );
1365 p_vout->b_filter_change = VLC_TRUE;
1367 #define ES p_input->stream.pp_es[i]
1369 for( i = 0 ; i < p_input->stream.i_es_number ; i++ )
1371 if( ( ES->i_cat == VIDEO_ES ) && ES->p_dec != NULL )
1373 input_UnselectES( p_input, ES );
1374 input_SelectES( p_input, ES );
1378 vlc_mutex_unlock( &p_input->stream.stream_lock );
1380 vlc_object_release( p_input );
1383 val.b_bool = VLC_TRUE;
1384 var_Set( p_vout, "intf-change", val );
1388 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1389 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1391 vout_thread_t *p_vout = (vout_thread_t *)p_this;
1392 input_thread_t *p_input;
1396 p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1401 msg_Err( p_vout, "Input not found" );
1402 return( VLC_EGENERIC );
1405 /* FIXME FIXME input2 --fenrir */
1407 /* Restart the video stream */
1408 vlc_mutex_lock( &p_input->stream.stream_lock );
1410 p_vout->b_filter_change = VLC_TRUE;
1412 #define ES p_input->stream.pp_es[i]
1414 for( i = 0 ; i < p_input->stream.i_es_number ; i++ )
1416 if( ( ES->i_cat == VIDEO_ES ) && ES->p_dec != NULL )
1418 input_UnselectES( p_input, ES );
1419 input_SelectES( p_input, ES );
1423 vlc_mutex_unlock( &p_input->stream.stream_lock );
1425 vlc_object_release( p_input );
1428 val.b_bool = VLC_TRUE;
1429 var_Set( p_vout, "intf-change", val );