1 /*****************************************************************************
2 * vout_subpictures.c : subpicture management functions
3 *****************************************************************************
4 * Copyright (C) 2000-2007 the VideoLAN team
7 * Authors: Vincent Seguin <seguin@via.ecp.fr>
8 * Samuel Hocevar <sam@zoy.org>
9 * Gildas Bazin <gbazin@videolan.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
33 #include <vlc_common.h>
35 #include <vlc_block.h>
36 #include <vlc_filter.h>
38 #include "../libvlc.h"
39 #include "vout_internal.h"
40 #include <vlc_image.h>
45 /*****************************************************************************
47 *****************************************************************************/
49 /* Number of simultaneous subpictures */
50 #define VOUT_MAX_SUBPICTURES (__MAX(VOUT_MAX_PICTURES, SPU_MAX_PREPARE_TIME/5000))
55 subpicture_t *p_subpicture;
61 spu_heap_entry_t p_entry[VOUT_MAX_SUBPICTURES];
65 static void SpuHeapInit( spu_heap_t * );
66 static int SpuHeapPush( spu_heap_t *, subpicture_t * );
67 static void SpuHeapDeleteAt( spu_heap_t *, int i_index );
68 static int SpuHeapDeleteSubpicture( spu_heap_t *, subpicture_t * );
69 static void SpuHeapClean( spu_heap_t *p_heap );
73 vlc_mutex_t lock; /* lock to protect all followings fields */
77 int i_channel; /**< number of subpicture channels registered */
78 filter_t *p_blend; /**< alpha blending module */
79 filter_t *p_text; /**< text renderer module */
80 filter_t *p_scale_yuvp; /**< scaling module for YUVP */
81 filter_t *p_scale; /**< scaling module (all but YUVP) */
82 bool b_force_crop; /**< force cropping of subpicture */
83 int i_crop_x, i_crop_y, i_crop_width, i_crop_height; /**< cropping */
85 int i_margin; /**< force position of a subpicture */
86 bool b_force_palette; /**< force palette of subpicture */
87 uint8_t palette[4][4]; /**< forced palette */
89 /* Subpiture filters */
90 char *psz_chain_update;
91 filter_chain_t *p_chain;
94 mtime_t i_last_sort_date;
98 struct subpicture_region_private_t
101 picture_t *p_picture;
103 static subpicture_region_private_t *SpuRegionPrivateNew( video_format_t * );
104 static void SpuRegionPrivateDelete( subpicture_region_private_t * );
112 static spu_scale_t spu_scale_create( int w, int h );
113 static spu_scale_t spu_scale_unit(void );
114 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd );
115 static int spu_scale_w( int v, const spu_scale_t s );
116 static int spu_scale_h( int v, const spu_scale_t s );
117 static int spu_invscale_w( int v, const spu_scale_t s );
118 static int spu_invscale_h( int v, const spu_scale_t s );
130 static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t );
131 static spu_area_t spu_area_scaled( spu_area_t );
132 static spu_area_t spu_area_unscaled( spu_area_t, spu_scale_t );
133 static bool spu_area_overlap( spu_area_t, spu_area_t );
136 /* Subpicture rendered flag
137 * FIXME ? it could be moved to private ? */
138 #define SUBPICTURE_RENDERED (0x1000)
139 #if SUBPICTURE_RENDERED < SUBPICTURE_ALIGN_MASK
140 # error SUBPICTURE_RENDERED too low
143 #define SCALE_UNIT (1000)
145 static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic );
146 static int SubpictureCmp( const void *s0, const void *s1 );
148 static void SpuRenderRegion( spu_t *,
149 picture_t *p_pic_dst, spu_area_t *,
150 subpicture_t *, subpicture_region_t *,
151 const spu_scale_t scale_size,
152 const video_format_t *p_fmt,
153 const spu_area_t *p_subtitle_area, int i_subtitle_area,
154 mtime_t render_date );
156 static void UpdateSPU ( spu_t *, vlc_object_t * );
157 static int CropCallback( vlc_object_t *, char const *,
158 vlc_value_t, vlc_value_t, void * );
159 static int MarginCallback( vlc_object_t *, char const *,
160 vlc_value_t, vlc_value_t, void * );
162 static int SpuControl( spu_t *, int, va_list );
164 static void SpuClearChannel( spu_t *p_spu, int i_channel );
166 /* Buffer allocation for SPU filter (blend, scale, ...) */
167 static subpicture_t *spu_new_buffer( filter_t * );
168 static void spu_del_buffer( filter_t *, subpicture_t * );
169 static picture_t *spu_new_video_buffer( filter_t * );
170 static void spu_del_video_buffer( filter_t *, picture_t * );
172 /* Buffer aloccation fir SUB filter */
173 static int SubFilterCallback( vlc_object_t *, char const *,
174 vlc_value_t, vlc_value_t, void * );
176 static int SubFilterAllocationInit( filter_t *, void * );
177 static void SubFilterAllocationClean( filter_t * );
180 static void SpuRenderCreateAndLoadText( spu_t * );
181 static void SpuRenderCreateAndLoadScale( spu_t * );
182 static void FilterRelease( filter_t *p_filter );
184 /*****************************************************************************
186 *****************************************************************************/
188 * Creates the subpicture unit
190 * \param p_this the parent object which creates the subpicture unit
192 spu_t *__spu_Create( vlc_object_t *p_this )
195 spu_private_t *p_sys;
197 p_spu = vlc_custom_create( p_this, sizeof(spu_t) + sizeof(spu_private_t),
198 VLC_OBJECT_GENERIC, "subpicture" );
203 /* Initialize spu fields */
204 p_spu->pf_control = SpuControl;
205 p_spu->p = p_sys = (spu_private_t*)&p_spu[1];
207 /* Initialize private fields */
208 vlc_mutex_init( &p_sys->lock );
210 SpuHeapInit( &p_sys->heap );
212 p_sys->p_blend = NULL;
213 p_sys->p_text = NULL;
214 p_sys->p_scale = NULL;
215 p_sys->p_scale_yuvp = NULL;
217 /* Register the default subpicture channel */
218 p_sys->i_channel = 2;
220 vlc_object_attach( p_spu, p_this );
222 p_sys->psz_chain_update = NULL;
223 p_sys->p_chain = filter_chain_New( p_spu, "sub filter", false,
224 SubFilterAllocationInit,
225 SubFilterAllocationClean,
228 /* Load text and scale module */
229 SpuRenderCreateAndLoadText( p_spu );
230 SpuRenderCreateAndLoadScale( p_spu );
233 p_sys->i_last_sort_date = -1;
239 * Initialise the subpicture unit
241 * \param p_spu the subpicture unit object
243 int spu_Init( spu_t *p_spu )
245 spu_private_t *p_sys = p_spu->p;
247 /* If the user requested a sub margin, we force the position. */
248 /* NOTE position is initialized from "sub-margin" belonging to
249 input_thread_t in UpdateSPU() */
251 //obsolete: p_sys->i_margin = var_CreateGetInteger( p_spu, "sub-margin" );
253 var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
254 var_AddCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
255 var_TriggerCallback( p_spu, "sub-filter" );
261 * Destroy the subpicture unit
263 * \param p_this the parent object which destroys the subpicture unit
265 void spu_Destroy( spu_t *p_spu )
267 spu_private_t *p_sys = p_spu->p;
269 var_DelCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
272 filter_DeleteBlend( p_sys->p_blend );
275 FilterRelease( p_sys->p_text );
277 if( p_sys->p_scale_yuvp )
278 FilterRelease( p_sys->p_scale_yuvp );
281 FilterRelease( p_sys->p_scale );
283 filter_chain_Delete( p_sys->p_chain );
284 free( p_sys->psz_chain_update );
286 /* Destroy all remaining subpictures */
287 SpuHeapClean( &p_sys->heap );
289 vlc_mutex_destroy( &p_sys->lock );
291 vlc_object_release( p_spu );
295 * Attach/Detach the SPU from any input
297 * \param p_this the object in which to destroy the subpicture unit
298 * \param b_attach to select attach or detach
300 void spu_Attach( spu_t *p_spu, vlc_object_t *p_this, bool b_attach )
302 vlc_object_t *p_input;
304 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
310 UpdateSPU( p_spu, VLC_OBJECT(p_input) );
311 var_AddCallback( p_input, "highlight", CropCallback, p_spu );
312 var_AddCallback( p_input, "sub-margin", MarginCallback, p_spu->p );
313 vlc_object_release( p_input );
317 /* Delete callback */
318 var_DelCallback( p_input, "highlight", CropCallback, p_spu );
319 var_DelCallback( p_input, "sub-margin", MarginCallback, p_spu->p );
320 vlc_object_release( p_input );
325 * Display a subpicture
327 * Remove the reservation flag of a subpicture, which will cause it to be
329 * \param p_spu the subpicture unit object
330 * \param p_subpic the subpicture to display
332 void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
334 spu_private_t *p_sys = p_spu->p;
336 /* DEFAULT_CHAN always reset itself */
337 if( p_subpic->i_channel == DEFAULT_CHAN )
338 SpuClearChannel( p_spu, DEFAULT_CHAN );
340 /* p_private is for spu only and cannot be non NULL here */
341 for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
342 assert( r->p_private == NULL );
345 vlc_mutex_lock( &p_sys->lock );
346 if( SpuHeapPush( &p_sys->heap, p_subpic ) )
348 vlc_mutex_unlock( &p_sys->lock );
349 msg_Err( p_spu, "subpicture heap full" );
350 subpicture_Delete( p_subpic );
353 vlc_mutex_unlock( &p_sys->lock );
357 * This function renders all sub picture units in the list.
359 void spu_RenderSubpictures( spu_t *p_spu,
360 picture_t *p_pic_dst, const video_format_t *p_fmt_dst,
361 subpicture_t *p_subpic_list,
362 const video_format_t *p_fmt_src,
363 mtime_t render_subtitle_date )
365 spu_private_t *p_sys = p_spu->p;
367 const mtime_t render_osd_date = mdate();
369 const int i_source_video_width = p_fmt_src->i_width;
370 const int i_source_video_height = p_fmt_src->i_height;
372 unsigned int i_subpicture;
373 subpicture_t *pp_subpicture[VOUT_MAX_SUBPICTURES];
375 unsigned int i_subtitle_region_count;
376 spu_area_t p_subtitle_area_buffer[VOUT_MAX_SUBPICTURES];
377 spu_area_t *p_subtitle_area;
380 vlc_mutex_lock( &p_sys->lock );
382 /* Preprocess subpictures */
384 i_subtitle_region_count = 0;
385 for( subpicture_t * p_subpic = p_subpic_list;
387 p_subpic = p_subpic->p_next )
389 if( p_subpic->pf_update_regions )
391 video_format_t fmt_org = *p_fmt_dst;
393 fmt_org.i_visible_width = i_source_video_width;
395 fmt_org.i_visible_height = i_source_video_height;
397 p_subpic->pf_update_regions( p_spu, p_subpic, &fmt_org,
398 p_subpic->b_subtitle ? render_subtitle_date : render_osd_date );
402 if( p_subpic->b_subtitle )
404 for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
405 i_subtitle_region_count++;
409 pp_subpicture[i_subpicture++] = p_subpic;
412 /* Be sure we have at least 1 picture to process */
413 if( i_subpicture <= 0 )
415 vlc_mutex_unlock( &p_sys->lock );
419 /* Now order subpicture array
420 * XXX The order is *really* important for overlap subtitles positionning */
421 qsort( pp_subpicture, i_subpicture, sizeof(*pp_subpicture), SubpictureCmp );
423 /* Allocate area array for subtitle overlap */
425 p_subtitle_area = p_subtitle_area_buffer;
426 if( i_subtitle_region_count > sizeof(p_subtitle_area_buffer)/sizeof(*p_subtitle_area_buffer) )
427 p_subtitle_area = calloc( i_subtitle_region_count, sizeof(*p_subtitle_area) );
429 /* Create the blending module */
430 if( !p_sys->p_blend )
431 p_spu->p->p_blend = filter_NewBlend( VLC_OBJECT(p_spu), p_fmt_dst );
433 /* Process all subpictures and regions (in the right order) */
434 for( unsigned int i_index = 0; i_index < i_subpicture; i_index++ )
436 subpicture_t *p_subpic = pp_subpicture[i_index];
437 subpicture_region_t *p_region;
439 if( !p_subpic->p_region )
442 /* FIXME when possible use a better rendering size than source size
443 * (max of display size and source size for example) FIXME */
444 int i_render_width = p_subpic->i_original_picture_width;
445 int i_render_height = p_subpic->i_original_picture_height;
446 if( !i_render_width || !i_render_height )
448 if( i_render_width != 0 || i_render_height != 0 )
449 msg_Err( p_spu, "unsupported original picture size %dx%d",
450 i_render_width, i_render_height );
452 p_subpic->i_original_picture_width = i_render_width = i_source_video_width;
453 p_subpic->i_original_picture_height = i_render_height = i_source_video_height;
458 p_sys->p_text->fmt_out.video.i_width =
459 p_sys->p_text->fmt_out.video.i_visible_width = i_render_width;
461 p_sys->p_text->fmt_out.video.i_height =
462 p_sys->p_text->fmt_out.video.i_visible_height = i_render_height;
465 /* Compute scaling from picture to source size */
466 spu_scale_t scale = spu_scale_createq( i_source_video_width, i_render_width,
467 i_source_video_height, i_render_height );
469 /* Update scaling from source size to display size(p_fmt_dst) */
470 scale.w = scale.w * p_fmt_dst->i_width / i_source_video_width;
471 scale.h = scale.h * p_fmt_dst->i_height / i_source_video_height;
473 /* Set default subpicture aspect ratio
474 * FIXME if we only handle 1 aspect ratio per picture, why is it set per
476 p_region = p_subpic->p_region;
477 if( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den )
479 if( p_region->fmt.i_aspect != 0 )
481 p_region->fmt.i_sar_den = p_region->fmt.i_aspect;
482 p_region->fmt.i_sar_num = VOUT_ASPECT_FACTOR;
486 p_region->fmt.i_sar_den = p_fmt_dst->i_sar_den;
487 p_region->fmt.i_sar_num = p_fmt_dst->i_sar_num;
491 /* Take care of the aspect ratio */
492 if( p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den !=
493 p_region->fmt.i_sar_den * p_fmt_dst->i_sar_num )
495 /* FIXME FIXME what about region->i_x/i_y ? */
497 (int64_t)p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den /
498 p_region->fmt.i_sar_den / p_fmt_dst->i_sar_num;
501 /* Render all regions
502 * We always transform non absolute subtitle into absolute one on the
503 * first rendering to allow good subtitle overlap support.
505 for( p_region = p_subpic->p_region; p_region != NULL; p_region = p_region->p_next )
509 /* Check scale validity */
510 if( scale.w <= 0 || scale.h <= 0 )
514 SpuRenderRegion( p_spu, p_pic_dst, &area,
515 p_subpic, p_region, scale, p_fmt_dst,
516 p_subtitle_area, i_subtitle_area,
517 p_subpic->b_subtitle ? render_subtitle_date : render_osd_date );
519 if( p_subpic->b_subtitle )
521 area = spu_area_unscaled( area, scale );
522 if( !p_subpic->b_absolute && area.i_width > 0 && area.i_height > 0 )
524 p_region->i_x = area.i_x;
525 p_region->i_y = area.i_y;
527 if( p_subtitle_area )
528 p_subtitle_area[i_subtitle_area++] = area;
531 if( p_subpic->b_subtitle )
532 p_subpic->b_absolute = true;
536 if( p_subtitle_area != p_subtitle_area_buffer )
537 free( p_subtitle_area );
539 vlc_mutex_unlock( &p_sys->lock );
542 /*****************************************************************************
543 * spu_SortSubpictures: find the subpictures to display
544 *****************************************************************************
545 * This function parses all subpictures and decides which ones need to be
546 * displayed. If no picture has been selected, display_date will depend on
548 * We also check for ephemer DVD subpictures (subpictures that have
549 * to be removed if a newer one is available), which makes it a lot
550 * more difficult to guess if a subpicture has to be rendered or not.
551 *****************************************************************************/
552 subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t render_subtitle_date,
553 bool b_subtitle_only )
555 spu_private_t *p_sys = p_spu->p;
557 subpicture_t *p_subpic = NULL;
558 const mtime_t render_osd_date = mdate();
560 /* Update sub-filter chain */
561 vlc_mutex_lock( &p_sys->lock );
562 char *psz_chain_update = p_sys->psz_chain_update;
563 p_sys->psz_chain_update = NULL;
564 vlc_mutex_unlock( &p_sys->lock );
566 if( psz_chain_update )
568 filter_chain_Reset( p_sys->p_chain, NULL, NULL );
570 filter_chain_AppendFromString( p_spu->p->p_chain, psz_chain_update );
572 free( psz_chain_update );
575 /* Run subpicture filters */
576 filter_chain_SubFilter( p_sys->p_chain, render_osd_date );
578 vlc_mutex_lock( &p_sys->lock );
580 /* We get an easily parsable chained list of subpictures which
581 * ends with NULL since p_subpic was initialized to NULL. */
582 for( i_channel = 0; i_channel < p_sys->i_channel; i_channel++ )
584 subpicture_t *p_available_subpic[VOUT_MAX_SUBPICTURES];
585 bool pb_available_late[VOUT_MAX_SUBPICTURES];
588 mtime_t start_date = render_subtitle_date;
589 mtime_t ephemer_subtitle_date = 0;
590 mtime_t ephemer_osd_date = 0;
591 int64_t i_ephemer_subtitle_order = INT64_MIN;
592 int64_t i_ephemer_system_order = INT64_MIN;
595 /* Select available pictures */
596 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
598 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_index];
599 subpicture_t *p_current = p_entry->p_subpicture;
603 if( !p_current || p_entry->b_reject )
605 if( p_entry->b_reject )
606 SpuHeapDeleteAt( &p_sys->heap, i_index );
610 if( p_current->i_channel != i_channel ||
611 ( b_subtitle_only && !p_current->b_subtitle ) )
615 const mtime_t render_date = p_current->b_subtitle ? render_subtitle_date : render_osd_date;
617 render_date < p_current->i_start )
619 /* Too early, come back next monday */
623 mtime_t *pi_ephemer_date = p_current->b_subtitle ? &ephemer_subtitle_date : &ephemer_osd_date;
624 int64_t *pi_ephemer_order = p_current->b_subtitle ? &i_ephemer_subtitle_order : &i_ephemer_system_order;
625 if( p_current->i_start >= *pi_ephemer_date )
627 *pi_ephemer_date = p_current->i_start;
628 if( p_current->i_order > *pi_ephemer_order )
629 *pi_ephemer_order = p_current->i_order;
632 b_stop_valid = !p_current->b_ephemer || p_current->i_stop > p_current->i_start;
634 b_late = b_stop_valid && p_current->i_stop <= render_date;
636 /* start_date will be used for correct automatic overlap support
637 * in case picture that should not be displayed anymore (display_time)
638 * overlap with a picture to be displayed (p_current->i_start) */
639 if( p_current->b_subtitle && !b_late && !p_current->b_ephemer )
640 start_date = p_current->i_start;
643 p_available_subpic[i_available] = p_current;
644 pb_available_late[i_available] = b_late;
648 /* Only forced old picture display at the transition */
649 if( start_date < p_sys->i_last_sort_date )
650 start_date = p_sys->i_last_sort_date;
651 if( start_date <= 0 )
652 start_date = INT64_MAX;
654 /* Select pictures to be displayed */
655 for( i_index = 0; i_index < i_available; i_index++ )
657 subpicture_t *p_current = p_available_subpic[i_index];
658 bool b_late = pb_available_late[i_index];
660 const mtime_t stop_date = p_current->b_subtitle ? __MAX( start_date, p_sys->i_last_sort_date ) : render_osd_date;
661 const mtime_t ephemer_date = p_current->b_subtitle ? ephemer_subtitle_date : ephemer_osd_date;
662 const int64_t i_ephemer_order = p_current->b_subtitle ? i_ephemer_subtitle_order : i_ephemer_system_order;
664 /* Destroy late and obsolete ephemer subpictures */
665 bool b_rejet = b_late && p_current->i_stop <= stop_date;
666 if( p_current->b_ephemer )
668 if( p_current->i_start < ephemer_date )
670 else if( p_current->i_start == ephemer_date &&
671 p_current->i_order < i_ephemer_order )
676 SpuHeapDeleteSubpicture( &p_sys->heap, p_current );
678 SubpictureChain( &p_subpic, p_current );
682 p_sys->i_last_sort_date = render_subtitle_date;
683 vlc_mutex_unlock( &p_sys->lock );
688 void spu_OffsetSubtitleDate( spu_t *p_spu, mtime_t i_duration )
690 spu_private_t *p_sys = p_spu->p;
692 vlc_mutex_lock( &p_sys->lock );
693 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
695 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i];
696 subpicture_t *p_current = p_entry->p_subpicture;
698 if( p_current && p_current->b_subtitle )
700 if( p_current->i_start > 0 )
701 p_current->i_start += i_duration;
702 if( p_current->i_stop > 0 )
703 p_current->i_stop += i_duration;
706 vlc_mutex_unlock( &p_sys->lock );
709 /*****************************************************************************
710 * subpicture_t allocation
711 *****************************************************************************/
712 subpicture_t *subpicture_New( void )
714 subpicture_t *p_subpic = calloc( 1, sizeof(*p_subpic) );
718 p_subpic->i_order = 0;
719 p_subpic->b_absolute = true;
720 p_subpic->b_fade = false;
721 p_subpic->b_subtitle = false;
722 p_subpic->i_alpha = 0xFF;
723 p_subpic->p_region = NULL;
724 p_subpic->pf_destroy = NULL;
725 p_subpic->p_sys = NULL;
730 void subpicture_Delete( subpicture_t *p_subpic )
732 subpicture_region_ChainDelete( p_subpic->p_region );
733 p_subpic->p_region = NULL;
735 if( p_subpic->pf_destroy )
737 p_subpic->pf_destroy( p_subpic );
742 static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic )
744 p_subpic->p_next = *pp_head;
749 subpicture_t *subpicture_NewFromPicture( vlc_object_t *p_obj,
750 picture_t *p_picture, vlc_fourcc_t i_chroma )
753 video_format_t fmt_in = p_picture->format;
756 video_format_t fmt_out;
758 fmt_out.i_chroma = i_chroma;
761 image_handler_t *p_image = image_HandlerCreate( p_obj );
765 picture_t *p_pip = image_Convert( p_image, p_picture, &fmt_in, &fmt_out );
767 image_HandlerDelete( p_image );
772 subpicture_t *p_subpic = subpicture_New();
775 picture_Release( p_pip );
779 p_subpic->i_original_picture_width = fmt_out.i_width;
780 p_subpic->i_original_picture_height = fmt_out.i_height;
782 fmt_out.i_aspect = 0;
784 fmt_out.i_sar_den = 0;
786 p_subpic->p_region = subpicture_region_New( &fmt_out );
787 if( p_subpic->p_region )
789 picture_Release( p_subpic->p_region->p_picture );
790 p_subpic->p_region->p_picture = p_pip;
794 picture_Release( p_pip );
799 /*****************************************************************************
800 * subpicture_region_t allocation
801 *****************************************************************************/
802 subpicture_region_t *subpicture_region_New( const video_format_t *p_fmt )
804 subpicture_region_t *p_region = calloc( 1, sizeof(*p_region ) );
808 p_region->fmt = *p_fmt;
809 p_region->fmt.p_palette = NULL;
810 if( p_fmt->i_chroma == VLC_CODEC_YUVP )
812 p_region->fmt.p_palette = calloc( 1, sizeof(*p_region->fmt.p_palette) );
813 if( p_fmt->p_palette )
814 *p_region->fmt.p_palette = *p_fmt->p_palette;
816 p_region->i_alpha = 0xff;
817 p_region->p_next = NULL;
818 p_region->p_private = NULL;
819 p_region->psz_text = NULL;
820 p_region->p_style = NULL;
821 p_region->p_picture = NULL;
823 if( p_fmt->i_chroma == VLC_CODEC_TEXT )
826 p_region->p_picture = picture_New( p_fmt->i_chroma, p_fmt->i_width, p_fmt->i_height,
828 if( !p_region->p_picture )
830 free( p_fmt->p_palette );
839 void subpicture_region_Delete( subpicture_region_t *p_region )
844 if( p_region->p_private )
845 SpuRegionPrivateDelete( p_region->p_private );
847 if( p_region->p_picture )
848 picture_Release( p_region->p_picture );
850 free( p_region->fmt.p_palette );
852 free( p_region->psz_text );
853 free( p_region->psz_html );
854 if( p_region->p_style )
855 text_style_Delete( p_region->p_style );
860 void subpicture_region_ChainDelete( subpicture_region_t *p_head )
864 subpicture_region_t *p_next = p_head->p_next;
866 subpicture_region_Delete( p_head );
874 /*****************************************************************************
876 *****************************************************************************/
877 static void SpuHeapInit( spu_heap_t *p_heap )
879 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
881 spu_heap_entry_t *e = &p_heap->p_entry[i];
883 e->p_subpicture = NULL;
888 static int SpuHeapPush( spu_heap_t *p_heap, subpicture_t *p_subpic )
890 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
892 spu_heap_entry_t *e = &p_heap->p_entry[i];
894 if( e->p_subpicture )
897 e->p_subpicture = p_subpic;
904 static void SpuHeapDeleteAt( spu_heap_t *p_heap, int i_index )
906 spu_heap_entry_t *e = &p_heap->p_entry[i_index];
908 if( e->p_subpicture )
909 subpicture_Delete( e->p_subpicture );
911 e->p_subpicture = NULL;
914 static int SpuHeapDeleteSubpicture( spu_heap_t *p_heap, subpicture_t *p_subpic )
916 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
918 spu_heap_entry_t *e = &p_heap->p_entry[i];
920 if( e->p_subpicture != p_subpic )
923 SpuHeapDeleteAt( p_heap, i );
929 static void SpuHeapClean( spu_heap_t *p_heap )
931 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
933 spu_heap_entry_t *e = &p_heap->p_entry[i];
934 if( e->p_subpicture )
935 subpicture_Delete( e->p_subpicture );
939 static subpicture_region_private_t *SpuRegionPrivateNew( video_format_t *p_fmt )
941 subpicture_region_private_t *p_private = malloc( sizeof(*p_private) );
946 p_private->fmt = *p_fmt;
947 if( p_fmt->p_palette )
949 p_private->fmt.p_palette = malloc( sizeof(*p_private->fmt.p_palette) );
950 if( p_private->fmt.p_palette )
951 *p_private->fmt.p_palette = *p_fmt->p_palette;
953 p_private->p_picture = NULL;
957 static void SpuRegionPrivateDelete( subpicture_region_private_t *p_private )
959 if( p_private->p_picture )
960 picture_Release( p_private->p_picture );
961 free( p_private->fmt.p_palette );
965 static void FilterRelease( filter_t *p_filter )
967 if( p_filter->p_module )
968 module_unneed( p_filter, p_filter->p_module );
970 vlc_object_detach( p_filter );
971 vlc_object_release( p_filter );
974 static void SpuRenderCreateAndLoadText( spu_t *p_spu )
978 assert( !p_spu->p->p_text );
981 p_text = vlc_custom_create( p_spu, sizeof(filter_t),
982 VLC_OBJECT_GENERIC, "spu text" );
986 es_format_Init( &p_text->fmt_in, VIDEO_ES, 0 );
988 es_format_Init( &p_text->fmt_out, VIDEO_ES, 0 );
989 p_text->fmt_out.video.i_width =
990 p_text->fmt_out.video.i_visible_width = 32;
991 p_text->fmt_out.video.i_height =
992 p_text->fmt_out.video.i_visible_height = 32;
994 p_text->pf_sub_buffer_new = spu_new_buffer;
995 p_text->pf_sub_buffer_del = spu_del_buffer;
997 vlc_object_attach( p_text, p_spu );
999 /* FIXME TOCHECK shouldn't module_need( , , psz_modulename, false ) do the
1000 * same than these 2 calls ? */
1001 char *psz_modulename = var_CreateGetString( p_spu, "text-renderer" );
1002 if( psz_modulename && *psz_modulename )
1004 p_text->p_module = module_need( p_text, "text renderer",
1005 psz_modulename, true );
1007 free( psz_modulename );
1009 if( !p_text->p_module )
1010 p_text->p_module = module_need( p_text, "text renderer", NULL, false );
1012 /* Create a few variables used for enhanced text rendering */
1013 var_Create( p_text, "spu-duration", VLC_VAR_TIME );
1014 var_Create( p_text, "spu-elapsed", VLC_VAR_TIME );
1015 var_Create( p_text, "text-rerender", VLC_VAR_BOOL );
1016 var_Create( p_text, "scale", VLC_VAR_INTEGER );
1019 static filter_t *CreateAndLoadScale( vlc_object_t *p_obj,
1020 vlc_fourcc_t i_src_chroma, vlc_fourcc_t i_dst_chroma,
1025 p_scale = vlc_custom_create( p_obj, sizeof(filter_t),
1026 VLC_OBJECT_GENERIC, "scale" );
1030 es_format_Init( &p_scale->fmt_in, VIDEO_ES, 0 );
1031 p_scale->fmt_in.video.i_chroma = i_src_chroma;
1032 p_scale->fmt_in.video.i_width =
1033 p_scale->fmt_in.video.i_height = 32;
1035 es_format_Init( &p_scale->fmt_out, VIDEO_ES, 0 );
1036 p_scale->fmt_out.video.i_chroma = i_dst_chroma;
1037 p_scale->fmt_out.video.i_width =
1038 p_scale->fmt_out.video.i_height = b_resize ? 16 : 32;
1040 p_scale->pf_vout_buffer_new = spu_new_video_buffer;
1041 p_scale->pf_vout_buffer_del = spu_del_video_buffer;
1043 vlc_object_attach( p_scale, p_obj );
1044 p_scale->p_module = module_need( p_scale, "video filter2", NULL, false );
1048 static void SpuRenderCreateAndLoadScale( spu_t *p_spu )
1050 assert( !p_spu->p->p_scale );
1051 assert( !p_spu->p->p_scale_yuvp );
1052 /* XXX p_spu->p_scale is used for all conversion/scaling except yuvp to
1054 p_spu->p->p_scale = CreateAndLoadScale( VLC_OBJECT(p_spu),
1055 VLC_CODEC_YUVA, VLC_CODEC_YUVA, true );
1056 /* This one is used for YUVP to YUVA/RGBA without scaling
1057 * FIXME rename it */
1058 p_spu->p->p_scale_yuvp = CreateAndLoadScale( VLC_OBJECT(p_spu),
1059 VLC_CODEC_YUVP, VLC_CODEC_YUVA, false );
1062 static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
1063 subpicture_t *p_subpic, subpicture_region_t *p_region,
1064 int i_min_scale_ratio, mtime_t render_date )
1066 filter_t *p_text = p_spu->p->p_text;
1068 assert( p_region->fmt.i_chroma == VLC_CODEC_TEXT );
1070 if( !p_text || !p_text->p_module )
1073 /* Setup 3 variables which can be used to render
1074 * time-dependent text (and effects). The first indicates
1075 * the total amount of time the text will be on screen,
1076 * the second the amount of time it has already been on
1077 * screen (can be a negative value as text is layed out
1078 * before it is rendered) and the third is a feedback
1079 * variable from the renderer - if the renderer sets it
1080 * then this particular text is time-dependent, eg. the
1081 * visual progress bar inside the text in karaoke and the
1082 * text needs to be rendered multiple times in order for
1083 * the effect to work - we therefore need to return the
1084 * region to its original state at the end of the loop,
1085 * instead of leaving it in YUVA or YUVP.
1086 * Any renderer which is unaware of how to render
1087 * time-dependent text can happily ignore the variables
1088 * and render the text the same as usual - it should at
1089 * least show up on screen, but the effect won't change
1090 * the text over time.
1092 var_SetTime( p_text, "spu-duration", p_subpic->i_stop - p_subpic->i_start );
1093 var_SetTime( p_text, "spu-elapsed", render_date );
1094 var_SetBool( p_text, "text-rerender", false );
1095 var_SetInteger( p_text, "scale", i_min_scale_ratio );
1097 if( p_text->pf_render_html && p_region->psz_html )
1099 p_text->pf_render_html( p_text, p_region, p_region );
1101 else if( p_text->pf_render_text )
1103 p_text->pf_render_text( p_text, p_region, p_region );
1105 *pb_rerender_text = var_GetBool( p_text, "text-rerender" );
1108 p_region->i_align |= SUBPICTURE_RENDERED;
1112 * A few scale functions helpers.
1114 static spu_scale_t spu_scale_create( int w, int h )
1116 spu_scale_t s = { .w = w, .h = h };
1123 static spu_scale_t spu_scale_unit( void )
1125 return spu_scale_create( SCALE_UNIT, SCALE_UNIT );
1127 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd )
1129 return spu_scale_create( wn * SCALE_UNIT / wd,
1130 hn * SCALE_UNIT / hd );
1132 static int spu_scale_w( int v, const spu_scale_t s )
1134 return v * s.w / SCALE_UNIT;
1136 static int spu_scale_h( int v, const spu_scale_t s )
1138 return v * s.h / SCALE_UNIT;
1140 static int spu_invscale_w( int v, const spu_scale_t s )
1142 return v * SCALE_UNIT / s.w;
1144 static int spu_invscale_h( int v, const spu_scale_t s )
1146 return v * SCALE_UNIT / s.h;
1150 * A few area functions helpers
1152 static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t s )
1154 spu_area_t a = { .i_x = x, .i_y = y, .i_width = w, .i_height = h, .scale = s };
1157 static spu_area_t spu_area_scaled( spu_area_t a )
1159 if( a.scale.w == SCALE_UNIT && a.scale.h == SCALE_UNIT )
1162 a.i_x = spu_scale_w( a.i_x, a.scale );
1163 a.i_y = spu_scale_h( a.i_y, a.scale );
1165 a.i_width = spu_scale_w( a.i_width, a.scale );
1166 a.i_height = spu_scale_h( a.i_height, a.scale );
1168 a.scale = spu_scale_unit();
1171 static spu_area_t spu_area_unscaled( spu_area_t a, spu_scale_t s )
1173 if( a.scale.w == s.w && a.scale.h == s.h )
1176 a = spu_area_scaled( a );
1178 a.i_x = spu_invscale_w( a.i_x, s );
1179 a.i_y = spu_invscale_h( a.i_y, s );
1181 a.i_width = spu_invscale_w( a.i_width, s );
1182 a.i_height = spu_invscale_h( a.i_height, s );
1187 static bool spu_area_overlap( spu_area_t a, spu_area_t b )
1192 a = spu_area_scaled( a );
1193 b = spu_area_scaled( b );
1195 return __MAX( a.i_x-i_dx, b.i_x ) < __MIN( a.i_x+a.i_width +i_dx, b.i_x+b.i_width ) &&
1196 __MAX( a.i_y-i_dy, b.i_y ) < __MIN( a.i_y+a.i_height+i_dy, b.i_y+b.i_height );
1200 * Avoid area overlapping
1202 static void SpuAreaFixOverlap( spu_area_t *p_dst,
1203 const spu_area_t *p_master,
1204 const spu_area_t *p_sub, int i_sub, int i_align )
1206 spu_area_t a = spu_area_scaled( *p_dst );
1207 bool b_moved = false;
1210 assert( p_master->i_x == 0 && p_master->i_y == 0 );
1212 /* Check for overlap
1213 * XXX It is not fast O(n^2) but we should not have a lot of region */
1217 for( int i = 0; i < i_sub; i++ )
1219 spu_area_t sub = spu_area_scaled( p_sub[i] );
1221 if( !spu_area_overlap( a, sub ) )
1224 if( i_align & SUBPICTURE_ALIGN_TOP )
1227 int i_y = sub.i_y + sub.i_height;
1228 if( i_y + a.i_height > p_master->i_height )
1233 else if( i_align & SUBPICTURE_ALIGN_BOTTOM )
1236 int i_y = sub.i_y - a.i_height;
1244 /* TODO what to do in this case? */
1245 //fprintf( stderr, "Overlap with unsupported alignment\n" );
1255 *p_dst = spu_area_unscaled( a, p_dst->scale );
1262 static void SpuRegionPlace( int *pi_x, int *pi_y,
1263 const subpicture_t *p_subpic,
1264 const subpicture_region_t *p_region,
1267 const int i_delta_x = p_region->i_x;
1268 const int i_delta_y = p_region->i_y;
1271 assert( p_region->i_x != INT_MAX && p_region->i_y != INT_MAX );
1272 if( p_region->i_align & SUBPICTURE_ALIGN_TOP )
1276 else if( p_region->i_align & SUBPICTURE_ALIGN_BOTTOM )
1278 i_y = p_subpic->i_original_picture_height - p_region->fmt.i_height - i_delta_y;
1282 i_y = p_subpic->i_original_picture_height / 2 - p_region->fmt.i_height / 2;
1285 if( p_region->i_align & SUBPICTURE_ALIGN_LEFT )
1289 else if( p_region->i_align & SUBPICTURE_ALIGN_RIGHT )
1291 i_x = p_subpic->i_original_picture_width - p_region->fmt.i_width - i_delta_x;
1295 i_x = p_subpic->i_original_picture_width / 2 - p_region->fmt.i_width / 2;
1298 if( p_subpic->b_absolute )
1304 /* Margin shifts all subpictures */
1305 if( i_margin_y != 0 )
1308 /* Clamp offset to not go out of the screen (when possible) */
1309 const int i_error_x = (i_x + p_region->fmt.i_width) - p_subpic->i_original_picture_width;
1315 const int i_error_y = (i_y + p_region->fmt.i_height) - p_subpic->i_original_picture_height;
1326 * This function computes the current alpha value for a given region.
1328 static int SpuRegionAlpha( subpicture_t *p_subpic, subpicture_region_t *p_region )
1330 /* Compute alpha blend value */
1331 int i_fade_alpha = 255;
1332 if( p_subpic->b_fade )
1334 mtime_t i_fade_start = ( p_subpic->i_stop +
1335 p_subpic->i_start ) / 2;
1336 mtime_t i_now = mdate();
1338 if( i_now >= i_fade_start && p_subpic->i_stop > i_fade_start )
1340 i_fade_alpha = 255 * ( p_subpic->i_stop - i_now ) /
1341 ( p_subpic->i_stop - i_fade_start );
1344 return i_fade_alpha * p_subpic->i_alpha * p_region->i_alpha / 65025;
1348 * It will render the provided region onto p_pic_dst.
1351 static void SpuRenderRegion( spu_t *p_spu,
1352 picture_t *p_pic_dst, spu_area_t *p_area,
1353 subpicture_t *p_subpic, subpicture_region_t *p_region,
1354 const spu_scale_t scale_size,
1355 const video_format_t *p_fmt,
1356 const spu_area_t *p_subtitle_area, int i_subtitle_area,
1357 mtime_t render_date )
1359 spu_private_t *p_sys = p_spu->p;
1361 video_format_t fmt_original = p_region->fmt;
1362 bool b_rerender_text = false;
1363 bool b_restore_format = false;
1367 video_format_t region_fmt;
1368 picture_t *p_region_picture;
1370 /* Invalidate area by default */
1371 *p_area = spu_area_create( 0,0, 0,0, scale_size );
1373 /* Render text region */
1374 if( p_region->fmt.i_chroma == VLC_CODEC_TEXT )
1376 const int i_min_scale_ratio = SCALE_UNIT; /* FIXME what is the right value? (scale_size is not) */
1377 SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region,
1378 i_min_scale_ratio, render_date );
1379 b_restore_format = b_rerender_text;
1381 /* Check if the rendering has failed ... */
1382 if( p_region->fmt.i_chroma == VLC_CODEC_TEXT )
1386 /* Force palette if requested
1387 * FIXME b_force_palette and b_force_crop are applied to all subpictures using palette
1388 * instead of only the right one (being the dvd spu).
1390 const bool b_using_palette = p_region->fmt.i_chroma == VLC_CODEC_YUVP;
1391 const bool b_force_palette = b_using_palette && p_sys->b_force_palette;
1392 const bool b_force_crop = b_force_palette && p_sys->b_force_crop;
1393 bool b_changed_palette = false;
1396 /* Compute the margin which is expressed in destination pixel unit
1397 * The margin is applied only to subtitle and when no forced crop is
1398 * requested (dvd menu) */
1400 if( !b_force_crop && p_subpic->b_subtitle )
1401 i_margin_y = spu_invscale_h( p_sys->i_margin, scale_size );
1403 /* Place the picture
1404 * We compute the position in the rendered size */
1405 SpuRegionPlace( &i_x_offset, &i_y_offset,
1406 p_subpic, p_region, i_margin_y );
1408 /* Save this position for subtitle overlap support
1409 * it is really important that there are given without scale_size applied */
1410 *p_area = spu_area_create( i_x_offset, i_y_offset,
1411 p_region->fmt.i_width, p_region->fmt.i_height,
1414 /* Handle overlapping subtitles when possible */
1415 if( p_subpic->b_subtitle && !p_subpic->b_absolute )
1417 spu_area_t display = spu_area_create( 0, 0, p_fmt->i_width, p_fmt->i_height,
1420 SpuAreaFixOverlap( p_area, &display, p_subtitle_area, i_subtitle_area,
1421 p_region->i_align );
1424 /* Fix the position for the current scale_size */
1425 i_x_offset = spu_scale_w( p_area->i_x, p_area->scale );
1426 i_y_offset = spu_scale_h( p_area->i_y, p_area->scale );
1429 if( b_force_palette )
1431 video_palette_t *p_palette = p_region->fmt.p_palette;
1432 video_palette_t palette;
1434 /* We suppose DVD palette here */
1435 palette.i_entries = 4;
1436 for( int i = 0; i < 4; i++ )
1437 for( int j = 0; j < 4; j++ )
1438 palette.palette[i][j] = p_sys->palette[i][j];
1440 if( p_palette->i_entries == palette.i_entries )
1442 for( int i = 0; i < p_palette->i_entries; i++ )
1443 for( int j = 0; j < 4; j++ )
1444 b_changed_palette |= p_palette->palette[i][j] != palette.palette[i][j];
1448 b_changed_palette = true;
1450 *p_palette = palette;
1454 region_fmt = p_region->fmt;
1455 p_region_picture = p_region->p_picture;
1458 /* Scale from rendered size to destination size */
1459 if( p_sys->p_scale && p_sys->p_scale->p_module &&
1460 ( !b_using_palette || ( p_sys->p_scale_yuvp && p_sys->p_scale_yuvp->p_module ) ) &&
1461 ( scale_size.w != SCALE_UNIT || scale_size.h != SCALE_UNIT || b_using_palette ) )
1463 const unsigned i_dst_width = spu_scale_w( p_region->fmt.i_width, scale_size );
1464 const unsigned i_dst_height = spu_scale_h( p_region->fmt.i_height, scale_size );
1466 /* Destroy the cache if unusable */
1467 if( p_region->p_private )
1469 subpicture_region_private_t *p_private = p_region->p_private;
1470 bool b_changed = false;
1472 /* Check resize changes */
1473 if( i_dst_width != p_private->fmt.i_width ||
1474 i_dst_height != p_private->fmt.i_height )
1477 /* Check forced palette changes */
1478 if( b_changed_palette )
1483 SpuRegionPrivateDelete( p_private );
1484 p_region->p_private = NULL;
1488 /* Scale if needed into cache */
1489 if( !p_region->p_private && i_dst_width > 0 && i_dst_height > 0 )
1491 filter_t *p_scale = p_sys->p_scale;
1493 picture_t *p_picture = p_region->p_picture;
1494 picture_Hold( p_picture );
1496 /* Convert YUVP to YUVA/RGBA first for better scaling quality */
1497 if( b_using_palette )
1499 filter_t *p_scale_yuvp = p_sys->p_scale_yuvp;
1501 p_scale_yuvp->fmt_in.video = p_region->fmt;
1503 /* TODO converting to RGBA for RGB video output is better */
1504 p_scale_yuvp->fmt_out.video = p_region->fmt;
1505 p_scale_yuvp->fmt_out.video.i_chroma = VLC_CODEC_YUVA;
1507 p_picture = p_scale_yuvp->pf_video_filter( p_scale_yuvp, p_picture );
1510 /* Well we will try conversion+scaling */
1511 msg_Warn( p_spu, "%4.4s to %4.4s conversion failed",
1512 (const char*)&p_scale_yuvp->fmt_in.video.i_chroma,
1513 (const char*)&p_scale_yuvp->fmt_out.video.i_chroma );
1517 /* Conversion(except from YUVP)/Scaling */
1519 ( p_picture->format.i_width != i_dst_width ||
1520 p_picture->format.i_height != i_dst_height ) )
1522 p_scale->fmt_in.video = p_picture->format;
1523 p_scale->fmt_out.video = p_picture->format;
1525 p_scale->fmt_out.video.i_width = i_dst_width;
1526 p_scale->fmt_out.video.i_height = i_dst_height;
1528 p_scale->fmt_out.video.i_visible_width =
1529 spu_scale_w( p_region->fmt.i_visible_width, scale_size );
1530 p_scale->fmt_out.video.i_visible_height =
1531 spu_scale_h( p_region->fmt.i_visible_height, scale_size );
1533 p_picture = p_scale->pf_video_filter( p_scale, p_picture );
1535 msg_Err( p_spu, "scaling failed" );
1541 p_region->p_private = SpuRegionPrivateNew( &p_picture->format );
1542 if( p_region->p_private )
1544 p_region->p_private->p_picture = p_picture;
1545 if( !p_region->p_private->p_picture )
1547 SpuRegionPrivateDelete( p_region->p_private );
1548 p_region->p_private = NULL;
1553 picture_Release( p_picture );
1558 /* And use the scaled picture */
1559 if( p_region->p_private )
1561 region_fmt = p_region->p_private->fmt;
1562 p_region_picture = p_region->p_private->p_picture;
1566 /* Force cropping if requested */
1569 int i_crop_x = spu_scale_w( p_sys->i_crop_x, scale_size );
1570 int i_crop_y = spu_scale_h( p_sys->i_crop_y, scale_size );
1571 int i_crop_width = spu_scale_w( p_sys->i_crop_width, scale_size );
1572 int i_crop_height= spu_scale_h( p_sys->i_crop_height,scale_size );
1574 /* Find the intersection */
1575 if( i_crop_x + i_crop_width <= i_x_offset ||
1576 i_x_offset + (int)region_fmt.i_visible_width < i_crop_x ||
1577 i_crop_y + i_crop_height <= i_y_offset ||
1578 i_y_offset + (int)region_fmt.i_visible_height < i_crop_y )
1580 /* No intersection */
1581 region_fmt.i_visible_width =
1582 region_fmt.i_visible_height = 0;
1586 int i_x, i_y, i_x_end, i_y_end;
1587 i_x = __MAX( i_crop_x, i_x_offset );
1588 i_y = __MAX( i_crop_y, i_y_offset );
1589 i_x_end = __MIN( i_crop_x + i_crop_width,
1590 i_x_offset + (int)region_fmt.i_visible_width );
1591 i_y_end = __MIN( i_crop_y + i_crop_height,
1592 i_y_offset + (int)region_fmt.i_visible_height );
1594 region_fmt.i_x_offset = i_x - i_x_offset;
1595 region_fmt.i_y_offset = i_y - i_y_offset;
1596 region_fmt.i_visible_width = i_x_end - i_x;
1597 region_fmt.i_visible_height = i_y_end - i_y;
1599 i_x_offset = __MAX( i_x, 0 );
1600 i_y_offset = __MAX( i_y, 0 );
1604 /* Update the blender */
1605 if( filter_ConfigureBlend( p_spu->p->p_blend,
1606 p_fmt->i_width, p_fmt->i_height,
1608 filter_Blend( p_spu->p->p_blend,
1609 p_pic_dst, i_x_offset, i_y_offset,
1610 p_region_picture, SpuRegionAlpha( p_subpic, p_region ) ) )
1612 msg_Err( p_spu, "blending %4.4s to %4.4s failed",
1613 (char *)&p_sys->p_blend->fmt_in.video.i_chroma,
1614 (char *)&p_sys->p_blend->fmt_out.video.i_chroma );
1618 if( b_rerender_text )
1620 /* Some forms of subtitles need to be re-rendered more than
1621 * once, eg. karaoke. We therefore restore the region to its
1622 * pre-rendered state, so the next time through everything is
1625 if( p_region->p_picture )
1627 picture_Release( p_region->p_picture );
1628 p_region->p_picture = NULL;
1630 if( p_region->p_private )
1632 SpuRegionPrivateDelete( p_region->p_private );
1633 p_region->p_private = NULL;
1635 p_region->i_align &= ~SUBPICTURE_RENDERED;
1637 if( b_restore_format )
1638 p_region->fmt = fmt_original;
1642 * This function compares two 64 bits integers.
1643 * It can be used by qsort.
1645 static int IntegerCmp( int64_t i0, int64_t i1 )
1647 return i0 < i1 ? -1 : i0 > i1 ? 1 : 0;
1650 * This function compares 2 subpictures using the following properties
1651 * (ordered by priority)
1652 * 1. absolute positionning
1654 * 3. creation order (per channel)
1656 * It can be used by qsort.
1658 * XXX spu_RenderSubpictures depends heavily on this order.
1660 static int SubpictureCmp( const void *s0, const void *s1 )
1662 subpicture_t *p_subpic0 = *(subpicture_t**)s0;
1663 subpicture_t *p_subpic1 = *(subpicture_t**)s1;
1666 r = IntegerCmp( !p_subpic0->b_absolute, !p_subpic1->b_absolute );
1668 r = IntegerCmp( p_subpic0->i_start, p_subpic1->i_start );
1670 r = IntegerCmp( p_subpic0->i_channel, p_subpic1->i_channel );
1672 r = IntegerCmp( p_subpic0->i_order, p_subpic1->i_order );
1676 /*****************************************************************************
1677 * SpuClearChannel: clear an spu channel
1678 *****************************************************************************
1679 * This function destroys the subpictures which belong to the spu channel
1680 * corresponding to i_channel_id.
1681 *****************************************************************************/
1682 static void SpuClearChannel( spu_t *p_spu, int i_channel )
1684 spu_private_t *p_sys = p_spu->p;
1685 int i_subpic; /* subpicture index */
1687 vlc_mutex_lock( &p_sys->lock );
1689 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
1691 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_subpic];
1692 subpicture_t *p_subpic = p_entry->p_subpicture;
1696 if( p_subpic->i_channel != i_channel && ( i_channel != -1 || p_subpic->i_channel == DEFAULT_CHAN ) )
1699 /* You cannot delete subpicture outside of spu_SortSubpictures */
1700 p_entry->b_reject = true;
1703 vlc_mutex_unlock( &p_sys->lock );
1706 /*****************************************************************************
1707 * spu_ControlDefault: default methods for the subpicture unit control.
1708 *****************************************************************************/
1709 static int SpuControl( spu_t *p_spu, int i_query, va_list args )
1711 spu_private_t *p_sys = p_spu->p;
1716 case SPU_CHANNEL_REGISTER:
1717 pi = (int *)va_arg( args, int * );
1718 vlc_mutex_lock( &p_sys->lock );
1720 *pi = p_sys->i_channel++;
1721 vlc_mutex_unlock( &p_sys->lock );
1724 case SPU_CHANNEL_CLEAR:
1725 i = (int)va_arg( args, int );
1726 SpuClearChannel( p_spu, i );
1730 msg_Dbg( p_spu, "control query not supported" );
1731 return VLC_EGENERIC;
1737 /*****************************************************************************
1738 * Object variables callbacks
1739 *****************************************************************************/
1741 /*****************************************************************************
1742 * UpdateSPU: update subpicture settings
1743 *****************************************************************************
1744 * This function is called from CropCallback and at initialization time, to
1745 * retrieve crop information from the input.
1746 *****************************************************************************/
1747 static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
1749 spu_private_t *p_sys = p_spu->p;
1752 vlc_mutex_lock( &p_sys->lock );
1754 p_sys->b_force_palette = false;
1755 p_sys->b_force_crop = false;
1757 if( var_Get( p_object, "highlight", &val ) || !val.b_bool )
1759 vlc_mutex_unlock( &p_sys->lock );
1763 p_sys->b_force_crop = true;
1764 p_sys->i_crop_x = var_GetInteger( p_object, "x-start" );
1765 p_sys->i_crop_y = var_GetInteger( p_object, "y-start" );
1766 p_sys->i_crop_width = var_GetInteger( p_object, "x-end" ) - p_sys->i_crop_x;
1767 p_sys->i_crop_height = var_GetInteger( p_object, "y-end" ) - p_sys->i_crop_y;
1768 p_sys->i_margin = var_GetInteger( p_object, "sub-margin" );
1770 if( var_Get( p_object, "menu-palette", &val ) == VLC_SUCCESS )
1772 memcpy( p_sys->palette, val.p_address, 16 );
1773 p_sys->b_force_palette = true;
1775 vlc_mutex_unlock( &p_sys->lock );
1777 msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
1778 p_sys->i_crop_x, p_sys->i_crop_y,
1779 p_sys->i_crop_width, p_sys->i_crop_height,
1780 p_sys->b_force_palette );
1783 /*****************************************************************************
1784 * CropCallback: called when the highlight properties are changed
1785 *****************************************************************************
1786 * This callback is called from the input thread when we need cropping
1787 *****************************************************************************/
1788 static int CropCallback( vlc_object_t *p_object, char const *psz_var,
1789 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1791 VLC_UNUSED(oldval); VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1793 UpdateSPU( (spu_t *)p_data, p_object );
1797 /*****************************************************************************
1798 * MarginCallback: called when requested subtitle position has changed *
1799 *****************************************************************************/
1801 static int MarginCallback( vlc_object_t *p_object, char const *psz_var,
1802 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1804 VLC_UNUSED( psz_var ); VLC_UNUSED( oldval ); VLC_UNUSED( p_object );
1805 spu_private_t *p_sys = ( spu_private_t* ) p_data;
1807 vlc_mutex_lock( &p_sys->lock );
1808 p_sys->i_margin = newval.i_int;
1809 vlc_mutex_unlock( &p_sys->lock );
1813 /*****************************************************************************
1814 * Buffers allocation callbacks for the filters
1815 *****************************************************************************/
1816 struct filter_owner_sys_t
1822 static subpicture_t *sub_new_buffer( filter_t *p_filter )
1824 filter_owner_sys_t *p_sys = p_filter->p_owner;
1826 subpicture_t *p_subpicture = subpicture_New();
1828 p_subpicture->i_channel = p_sys->i_channel;
1829 return p_subpicture;
1831 static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1833 VLC_UNUSED( p_filter );
1834 subpicture_Delete( p_subpic );
1837 static subpicture_t *spu_new_buffer( filter_t *p_filter )
1839 VLC_UNUSED(p_filter);
1840 return subpicture_New();
1842 static void spu_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1844 VLC_UNUSED(p_filter);
1845 subpicture_Delete( p_subpic );
1848 static picture_t *spu_new_video_buffer( filter_t *p_filter )
1850 const video_format_t *p_fmt = &p_filter->fmt_out.video;
1852 VLC_UNUSED(p_filter);
1853 return picture_New( p_fmt->i_chroma,
1854 p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
1856 static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_picture )
1858 VLC_UNUSED(p_filter);
1859 picture_Release( p_picture );
1862 static int SubFilterAllocationInit( filter_t *p_filter, void *p_data )
1864 spu_t *p_spu = p_data;
1866 filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
1868 return VLC_EGENERIC;
1870 p_filter->pf_sub_buffer_new = sub_new_buffer;
1871 p_filter->pf_sub_buffer_del = sub_del_buffer;
1873 p_filter->p_owner = p_sys;
1874 spu_Control( p_spu, SPU_CHANNEL_REGISTER, &p_sys->i_channel );
1875 p_sys->p_spu = p_spu;
1880 static void SubFilterAllocationClean( filter_t *p_filter )
1882 filter_owner_sys_t *p_sys = p_filter->p_owner;
1884 SpuClearChannel( p_sys->p_spu, p_sys->i_channel );
1885 free( p_filter->p_owner );
1888 static int SubFilterCallback( vlc_object_t *p_object, char const *psz_var,
1889 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1891 spu_t *p_spu = p_data;
1892 spu_private_t *p_sys = p_spu->p;
1894 VLC_UNUSED(p_object); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
1896 vlc_mutex_lock( &p_sys->lock );
1898 free( p_sys->psz_chain_update );
1899 p_sys->psz_chain_update = strdup( newval.psz_string );
1901 vlc_mutex_unlock( &p_sys->lock );