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"
44 /*****************************************************************************
46 *****************************************************************************/
47 #define VLC_FOURCC_YUVP VLC_FOURCC('Y','U','V','P')
48 #define VLC_FOURCC_YUVA VLC_FOURCC('Y','U','V','A')
49 #define VLC_FOURCC_RGBA VLC_FOURCC('R','G','B','A')
50 #define VLC_FOURCC_TEXT VLC_FOURCC('T','E','X','T')
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 filter_chain_t *p_chain;
93 mtime_t i_last_sort_date;
97 struct subpicture_region_private_t
100 picture_t *p_picture;
102 static subpicture_region_private_t *SpuRegionPrivateNew( video_format_t * );
103 static void SpuRegionPrivateDelete( subpicture_region_private_t * );
111 static spu_scale_t spu_scale_create( int w, int h );
112 static spu_scale_t spu_scale_unit(void );
113 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd );
114 static int spu_scale_w( int v, const spu_scale_t s );
115 static int spu_scale_h( int v, const spu_scale_t s );
116 static int spu_invscale_w( int v, const spu_scale_t s );
117 static int spu_invscale_h( int v, const spu_scale_t s );
129 static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t );
130 static spu_area_t spu_area_scaled( spu_area_t );
131 static spu_area_t spu_area_unscaled( spu_area_t, spu_scale_t );
132 static bool spu_area_overlap( spu_area_t, spu_area_t );
135 /* Subpicture rendered flag
136 * FIXME ? it could be moved to private ? */
137 #define SUBPICTURE_RENDERED (0x1000)
138 #if SUBPICTURE_RENDERED < SUBPICTURE_ALIGN_MASK
139 # error SUBPICTURE_RENDERED too low
142 #define SCALE_UNIT (1000)
144 static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic );
145 static int SubpictureCmp( const void *s0, const void *s1 );
147 static void SpuRenderRegion( spu_t *,
148 picture_t *p_pic_dst, spu_area_t *,
149 subpicture_t *, subpicture_region_t *,
150 const spu_scale_t scale_size,
151 const video_format_t *p_fmt,
152 const spu_area_t *p_subtitle_area, int i_subtitle_area );
154 static void UpdateSPU ( spu_t *, vlc_object_t * );
155 static int CropCallback( vlc_object_t *, char const *,
156 vlc_value_t, vlc_value_t, void * );
158 static int SpuControl( spu_t *, int, va_list );
160 static void SpuClearChannel( spu_t *p_spu, int i_channel, bool b_locked );
162 /* Buffer allocation for SPU filter (blend, scale, ...) */
163 static subpicture_t *spu_new_buffer( filter_t * );
164 static void spu_del_buffer( filter_t *, subpicture_t * );
165 static picture_t *spu_new_video_buffer( filter_t * );
166 static void spu_del_video_buffer( filter_t *, picture_t * );
168 static int spu_ParseChain( spu_t * );
170 /* Buffer aloccation fir SUB filter */
171 static int SubFilterCallback( vlc_object_t *, char const *,
172 vlc_value_t, vlc_value_t, void * );
174 static int SubFilterAllocationInit( filter_t *, void * );
175 static void SubFilterAllocationClean( filter_t * );
178 static void SpuRenderCreateAndLoadText( spu_t * );
179 static void SpuRenderCreateAndLoadScale( spu_t * );
180 static void SpuRenderCreateBlend( spu_t *, vlc_fourcc_t i_chroma, int i_aspect );
181 static void FilterRelease( filter_t *p_filter );
183 /*****************************************************************************
185 *****************************************************************************/
187 * Creates the subpicture unit
189 * \param p_this the parent object which creates the subpicture unit
191 spu_t *__spu_Create( vlc_object_t *p_this )
194 spu_private_t *p_sys;
196 p_spu = vlc_custom_create( p_this, sizeof(spu_t) + sizeof(spu_private_t),
197 VLC_OBJECT_GENERIC, "subpicture" );
202 /* Initialize spu fields */
203 p_spu->pf_control = SpuControl;
204 p_spu->p = p_sys = (spu_private_t*)&p_spu[1];
206 /* Initialize private fields */
207 vlc_mutex_init( &p_sys->lock );
209 SpuHeapInit( &p_sys->heap );
211 p_sys->p_blend = NULL;
212 p_sys->p_text = NULL;
213 p_sys->p_scale = NULL;
214 p_sys->p_scale_yuvp = NULL;
216 /* Register the default subpicture channel */
217 p_sys->i_channel = 2;
219 vlc_object_attach( p_spu, p_this );
221 p_sys->p_chain = filter_chain_New( p_spu, "sub filter", false,
222 SubFilterAllocationInit,
223 SubFilterAllocationClean,
226 /* Load text and scale module */
227 SpuRenderCreateAndLoadText( p_spu );
228 SpuRenderCreateAndLoadScale( p_spu );
231 p_sys->i_last_sort_date = -1;
237 * Initialise the subpicture unit
239 * \param p_spu the subpicture unit object
241 int spu_Init( spu_t *p_spu )
243 spu_private_t *p_sys = p_spu->p;
245 /* If the user requested a sub margin, we force the position. */
246 p_sys->i_margin = var_CreateGetInteger( p_spu, "sub-margin" );
248 var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
249 var_AddCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
251 spu_ParseChain( p_spu );
256 int spu_ParseChain( spu_t *p_spu )
258 char *psz_parser = var_GetString( p_spu, "sub-filter" );
264 i_ret = filter_chain_AppendFromString( p_spu->p->p_chain, psz_parser );
272 * Destroy the subpicture unit
274 * \param p_this the parent object which destroys the subpicture unit
276 void spu_Destroy( spu_t *p_spu )
278 spu_private_t *p_sys = p_spu->p;
281 FilterRelease( p_sys->p_blend );
284 FilterRelease( p_sys->p_text );
286 if( p_sys->p_scale_yuvp )
287 FilterRelease( p_sys->p_scale_yuvp );
290 FilterRelease( p_sys->p_scale );
292 filter_chain_Delete( p_sys->p_chain );
294 /* Destroy all remaining subpictures */
295 SpuHeapClean( &p_sys->heap );
297 vlc_mutex_destroy( &p_sys->lock );
299 vlc_object_release( p_spu );
303 * Attach/Detach the SPU from any input
305 * \param p_this the object in which to destroy the subpicture unit
306 * \param b_attach to select attach or detach
308 void spu_Attach( spu_t *p_spu, vlc_object_t *p_this, bool b_attach )
310 vlc_object_t *p_input;
312 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
313 if( !p_input ) return;
317 UpdateSPU( p_spu, VLC_OBJECT(p_input) );
318 var_AddCallback( p_input, "highlight", CropCallback, p_spu );
319 vlc_object_release( p_input );
323 /* Delete callback */
324 var_DelCallback( p_input, "highlight", CropCallback, p_spu );
325 vlc_object_release( p_input );
330 * Display a subpicture
332 * Remove the reservation flag of a subpicture, which will cause it to be
334 * \param p_spu the subpicture unit object
335 * \param p_subpic the subpicture to display
337 void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
339 spu_private_t *p_sys = p_spu->p;
341 /* DEFAULT_CHAN always reset itself */
342 if( p_subpic->i_channel == DEFAULT_CHAN )
343 SpuClearChannel( p_spu, DEFAULT_CHAN, false );
345 /* p_private is for spu only and cannot be non NULL here */
346 for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
347 assert( r->p_private == NULL );
350 vlc_mutex_lock( &p_sys->lock );
351 if( SpuHeapPush( &p_sys->heap, p_subpic ) )
353 vlc_mutex_unlock( &p_sys->lock );
354 msg_Err( p_spu, "subpicture heap full" );
355 subpicture_Delete( p_subpic );
358 vlc_mutex_unlock( &p_sys->lock );
362 * This function renders all sub picture units in the list.
364 void spu_RenderSubpictures( spu_t *p_spu,
365 picture_t *p_pic_dst, const video_format_t *p_fmt_dst,
366 subpicture_t *p_subpic_list,
367 const video_format_t *p_fmt_src, bool b_paused )
369 spu_private_t *p_sys = p_spu->p;
371 const int i_source_video_width = p_fmt_src->i_width;
372 const int i_source_video_height = p_fmt_src->i_height;
373 const mtime_t i_current_date = mdate();
375 unsigned int i_subpicture;
376 subpicture_t *pp_subpicture[VOUT_MAX_SUBPICTURES];
378 unsigned int i_subtitle_region_count;
379 spu_area_t p_subtitle_area_buffer[VOUT_MAX_SUBPICTURES];
380 spu_area_t *p_subtitle_area;
383 vlc_mutex_lock( &p_sys->lock );
385 /* Preprocess subpictures */
387 i_subtitle_region_count = 0;
388 for( subpicture_t * p_subpic = p_subpic_list;
390 p_subpic = p_subpic->p_next )
393 if( !b_paused && p_subpic->pf_pre_render )
394 p_subpic->pf_pre_render( p_spu, p_subpic, p_fmt_dst );
396 if( !b_paused && p_subpic->pf_update_regions )
398 video_format_t fmt_org = *p_fmt_dst;
400 fmt_org.i_visible_width = i_source_video_width;
402 fmt_org.i_visible_height = i_source_video_height;
404 p_subpic->pf_update_regions( p_spu, p_subpic, &fmt_org, i_current_date );
408 if( p_subpic->b_subtitle )
410 for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
411 i_subtitle_region_count++;
415 pp_subpicture[i_subpicture++] = p_subpic;
418 /* Be sure we have at least 1 picture to process */
419 if( i_subpicture <= 0 )
421 vlc_mutex_unlock( &p_sys->lock );
425 /* Now order subpicture array
426 * XXX The order is *really* important for overlap subtitles positionning */
427 qsort( pp_subpicture, i_subpicture, sizeof(*pp_subpicture), SubpictureCmp );
429 /* Allocate area array for subtitle overlap */
431 p_subtitle_area = p_subtitle_area_buffer;
432 if( i_subtitle_region_count > sizeof(p_subtitle_area_buffer)/sizeof(*p_subtitle_area_buffer) )
433 p_subtitle_area = calloc( i_subtitle_region_count, sizeof(*p_subtitle_area) );
435 /* Create the blending module */
436 if( !p_sys->p_blend )
437 SpuRenderCreateBlend( p_spu, p_fmt_dst->i_chroma, p_fmt_dst->i_aspect );
439 /* Process all subpictures and regions (in the right order) */
440 for( unsigned int i_index = 0; i_index < i_subpicture; i_index++ )
442 subpicture_t *p_subpic = pp_subpicture[i_index];
443 subpicture_region_t *p_region;
445 if( !p_subpic->p_region )
448 /* FIXME when possible use a better rendering size than source size
449 * (max of display size and source size for example) FIXME */
450 int i_render_width = p_subpic->i_original_picture_width;
451 int i_render_height = p_subpic->i_original_picture_height;
452 if( !i_render_width || !i_render_height )
454 if( i_render_width != 0 || i_render_height != 0 )
455 msg_Err( p_spu, "unsupported original picture size %dx%d",
456 i_render_width, i_render_height );
458 p_subpic->i_original_picture_width = i_render_width = i_source_video_width;
459 p_subpic->i_original_picture_height = i_render_height = i_source_video_height;
464 p_sys->p_text->fmt_out.video.i_width =
465 p_sys->p_text->fmt_out.video.i_visible_width = i_render_width;
467 p_sys->p_text->fmt_out.video.i_height =
468 p_sys->p_text->fmt_out.video.i_visible_height = i_render_height;
471 /* Compute scaling from picture to source size */
472 spu_scale_t scale = spu_scale_createq( i_source_video_width, i_render_width,
473 i_source_video_height, i_render_height );
475 /* Update scaling from source size to display size(p_fmt_dst) */
476 scale.w = scale.w * p_fmt_dst->i_width / i_source_video_width;
477 scale.h = scale.h * p_fmt_dst->i_height / i_source_video_height;
479 /* Set default subpicture aspect ratio
480 * FIXME if we only handle 1 aspect ratio per picture, why is it set per
482 p_region = p_subpic->p_region;
483 if( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den )
485 if( p_region->fmt.i_aspect != 0 )
487 p_region->fmt.i_sar_den = p_region->fmt.i_aspect;
488 p_region->fmt.i_sar_num = VOUT_ASPECT_FACTOR;
492 p_region->fmt.i_sar_den = p_fmt_dst->i_sar_den;
493 p_region->fmt.i_sar_num = p_fmt_dst->i_sar_num;
497 /* Take care of the aspect ratio */
498 if( p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den !=
499 p_region->fmt.i_sar_den * p_fmt_dst->i_sar_num )
501 /* FIXME FIXME what about region->i_x/i_y ? */
503 (int64_t)p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den /
504 p_region->fmt.i_sar_den / p_fmt_dst->i_sar_num;
507 /* Render all regions
508 * We always transform non absolute subtitle into absolute one on the
509 * first rendering to allow good subtitle overlap support.
511 for( p_region = p_subpic->p_region; p_region != NULL; p_region = p_region->p_next )
515 /* Check scale validity */
516 if( scale.w <= 0 || scale.h <= 0 )
520 SpuRenderRegion( p_spu, p_pic_dst, &area,
521 p_subpic, p_region, scale, p_fmt_dst,
522 p_subtitle_area, i_subtitle_area );
524 if( p_subpic->b_subtitle )
526 area = spu_area_unscaled( area, scale );
527 if( !p_subpic->b_absolute && area.i_width > 0 && area.i_height > 0 )
529 p_region->i_x = area.i_x;
530 p_region->i_y = area.i_y;
532 if( p_subtitle_area )
533 p_subtitle_area[i_subtitle_area++] = area;
536 if( p_subpic->b_subtitle )
537 p_subpic->b_absolute = true;
541 if( p_subtitle_area != p_subtitle_area_buffer )
542 free( p_subtitle_area );
544 vlc_mutex_unlock( &p_sys->lock );
547 /*****************************************************************************
548 * spu_SortSubpictures: find the subpictures to display
549 *****************************************************************************
550 * This function parses all subpictures and decides which ones need to be
551 * displayed. If no picture has been selected, display_date will depend on
553 * We also check for ephemer DVD subpictures (subpictures that have
554 * to be removed if a newer one is available), which makes it a lot
555 * more difficult to guess if a subpicture has to be rendered or not.
556 *****************************************************************************/
557 subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t display_date,
558 bool b_paused, bool b_subtitle_only )
560 spu_private_t *p_sys = p_spu->p;
562 subpicture_t *p_subpic = NULL;
564 /* Run subpicture filters */
565 filter_chain_SubFilter( p_sys->p_chain, display_date );
567 vlc_mutex_lock( &p_sys->lock );
569 /* We get an easily parsable chained list of subpictures which
570 * ends with NULL since p_subpic was initialized to NULL. */
571 for( i_channel = 0; i_channel < p_sys->i_channel; i_channel++ )
573 subpicture_t *p_available_subpic[VOUT_MAX_SUBPICTURES];
574 bool pb_available_late[VOUT_MAX_SUBPICTURES];
577 mtime_t start_date = display_date;
578 mtime_t ephemer_date = 0;
581 /* Select available pictures */
582 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
584 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_index];
585 subpicture_t *p_current = p_entry->p_subpicture;
589 if( !p_current || p_entry->b_reject )
591 if( p_entry->b_reject )
592 SpuHeapDeleteAt( &p_sys->heap, i_index );
596 if( p_current->i_channel != i_channel ||
597 ( b_subtitle_only && !p_current->b_subtitle ) )
602 display_date < p_current->i_start )
604 /* Too early, come back next monday */
608 if( p_current->i_start > ephemer_date )
609 ephemer_date = p_current->i_start;
611 b_stop_valid = ( !p_current->b_ephemer || p_current->i_stop > p_current->i_start ) &&
612 ( !p_current->b_subtitle || !b_paused ); /* XXX Assume that subtitle are pausable */
614 b_late = b_stop_valid && p_current->i_stop <= display_date;
616 /* start_date will be used for correct automatic overlap support
617 * in case picture that should not be displayed anymore (display_time)
618 * overlap with a picture to be displayed (p_current->i_start) */
619 if( !b_late && !p_current->b_ephemer )
620 start_date = p_current->i_start;
623 p_available_subpic[i_available] = p_current;
624 pb_available_late[i_available] = b_late;
628 /* Only forced old picture display at the transition */
629 if( start_date < p_sys->i_last_sort_date )
630 start_date = p_sys->i_last_sort_date;
631 if( start_date <= 0 )
632 start_date = INT64_MAX;
634 /* Select pictures to be displayed */
635 for( i_index = 0; i_index < i_available; i_index++ )
637 subpicture_t *p_current = p_available_subpic[i_index];
638 bool b_late = pb_available_late[i_index];
640 if( ( b_late && p_current->i_stop <= __MAX( start_date, p_sys->i_last_sort_date ) ) ||
641 ( p_current->b_ephemer && p_current->i_start < ephemer_date ) )
643 /* Destroy late and obsolete ephemer subpictures */
644 SpuHeapDeleteSubpicture( &p_sys->heap, p_current );
648 SubpictureChain( &p_subpic, p_current );
653 p_sys->i_last_sort_date = display_date;
654 vlc_mutex_unlock( &p_sys->lock );
659 void spu_OffsetSubtitleDate( spu_t *p_spu, mtime_t i_duration )
661 spu_private_t *p_sys = p_spu->p;
663 vlc_mutex_lock( &p_sys->lock );
664 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
666 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i];
667 subpicture_t *p_current = p_entry->p_subpicture;
669 if( p_current && p_current->b_subtitle )
671 if( p_current->i_start > 0 )
672 p_current->i_start += i_duration;
673 if( p_current->i_stop > 0 )
674 p_current->i_stop += i_duration;
677 vlc_mutex_unlock( &p_sys->lock );
680 /*****************************************************************************
681 * subpicture_t allocation
682 *****************************************************************************/
683 subpicture_t *subpicture_New( void )
685 subpicture_t *p_subpic = calloc( 1, sizeof(*p_subpic) );
689 p_subpic->i_order = 0;
690 p_subpic->b_absolute = true;
691 p_subpic->b_fade = false;
692 p_subpic->b_subtitle = false;
693 p_subpic->i_alpha = 0xFF;
694 p_subpic->p_region = NULL;
695 p_subpic->pf_render = NULL;
696 p_subpic->pf_destroy = NULL;
697 p_subpic->p_sys = NULL;
702 void subpicture_Delete( subpicture_t *p_subpic )
704 subpicture_region_ChainDelete( p_subpic->p_region );
705 p_subpic->p_region = NULL;
707 if( p_subpic->pf_destroy )
709 p_subpic->pf_destroy( p_subpic );
714 static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic )
716 p_subpic->p_next = *pp_head;
721 /*****************************************************************************
722 * subpicture_region_t allocation
723 *****************************************************************************/
724 subpicture_region_t *subpicture_region_New( const video_format_t *p_fmt )
726 subpicture_region_t *p_region = calloc( 1, sizeof(*p_region ) );
730 p_region->fmt = *p_fmt;
731 p_region->fmt.p_palette = NULL;
732 if( p_fmt->i_chroma == VLC_FOURCC_YUVP )
734 p_region->fmt.p_palette = calloc( 1, sizeof(*p_region->fmt.p_palette) );
735 if( p_fmt->p_palette )
736 *p_region->fmt.p_palette = *p_fmt->p_palette;
738 p_region->i_alpha = 0xff;
739 p_region->p_next = NULL;
740 p_region->p_private = NULL;
741 p_region->psz_text = NULL;
742 p_region->p_style = NULL;
743 p_region->p_picture = NULL;
745 if( p_fmt->i_chroma == VLC_FOURCC_TEXT )
748 p_region->p_picture = picture_New( p_fmt->i_chroma, p_fmt->i_width, p_fmt->i_height,
750 if( !p_region->p_picture )
752 free( p_fmt->p_palette );
761 void subpicture_region_Delete( subpicture_region_t *p_region )
766 if( p_region->p_private )
767 SpuRegionPrivateDelete( p_region->p_private );
769 if( p_region->p_picture )
770 picture_Release( p_region->p_picture );
772 free( p_region->fmt.p_palette );
774 free( p_region->psz_text );
775 free( p_region->psz_html );
776 //free( p_region->p_style ); FIXME --fenrir plugin does not allocate the memory for it. I think it might lead to segfault, video renderer can live longer than the decoder
781 void subpicture_region_ChainDelete( subpicture_region_t *p_head )
785 subpicture_region_t *p_next = p_head->p_next;
787 subpicture_region_Delete( p_head );
795 /*****************************************************************************
797 *****************************************************************************/
798 static void SpuHeapInit( spu_heap_t *p_heap )
800 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
802 spu_heap_entry_t *e = &p_heap->p_entry[i];
804 e->p_subpicture = NULL;
809 static int SpuHeapPush( spu_heap_t *p_heap, subpicture_t *p_subpic )
811 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
813 spu_heap_entry_t *e = &p_heap->p_entry[i];
815 if( e->p_subpicture )
818 e->p_subpicture = p_subpic;
825 static void SpuHeapDeleteAt( spu_heap_t *p_heap, int i_index )
827 spu_heap_entry_t *e = &p_heap->p_entry[i_index];
829 if( e->p_subpicture )
830 subpicture_Delete( e->p_subpicture );
832 e->p_subpicture = NULL;
835 static int SpuHeapDeleteSubpicture( spu_heap_t *p_heap, subpicture_t *p_subpic )
837 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
839 spu_heap_entry_t *e = &p_heap->p_entry[i];
841 if( e->p_subpicture != p_subpic )
844 SpuHeapDeleteAt( p_heap, i );
850 static void SpuHeapClean( spu_heap_t *p_heap )
852 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
854 spu_heap_entry_t *e = &p_heap->p_entry[i];
855 if( e->p_subpicture )
856 subpicture_Delete( e->p_subpicture );
860 static subpicture_region_private_t *SpuRegionPrivateNew( video_format_t *p_fmt )
862 subpicture_region_private_t *p_private = malloc( sizeof(*p_private) );
867 p_private->fmt = *p_fmt;
868 if( p_fmt->p_palette )
870 p_private->fmt.p_palette = malloc( sizeof(*p_private->fmt.p_palette) );
871 if( p_private->fmt.p_palette )
872 *p_private->fmt.p_palette = *p_fmt->p_palette;
874 p_private->p_picture = NULL;
878 static void SpuRegionPrivateDelete( subpicture_region_private_t *p_private )
880 if( p_private->p_picture )
881 picture_Release( p_private->p_picture );
882 free( p_private->fmt.p_palette );
886 static void FilterRelease( filter_t *p_filter )
888 if( p_filter->p_module )
889 module_unneed( p_filter, p_filter->p_module );
891 vlc_object_detach( p_filter );
892 vlc_object_release( p_filter );
895 static void SpuRenderCreateBlend( spu_t *p_spu, vlc_fourcc_t i_chroma, int i_aspect )
899 assert( !p_spu->p->p_blend );
902 p_blend = vlc_custom_create( p_spu, sizeof(filter_t),
903 VLC_OBJECT_GENERIC, "blend" );
907 es_format_Init( &p_blend->fmt_in, VIDEO_ES, 0 );
909 es_format_Init( &p_blend->fmt_out, VIDEO_ES, 0 );
910 p_blend->fmt_out.video.i_x_offset = 0;
911 p_blend->fmt_out.video.i_y_offset = 0;
912 p_blend->fmt_out.video.i_chroma = i_chroma;
913 p_blend->fmt_out.video.i_aspect = i_aspect;
915 /* The blend module will be loaded when needed with the real
917 p_blend->p_module = NULL;
920 vlc_object_attach( p_blend, p_spu );
922 static void SpuRenderUpdateBlend( spu_t *p_spu, int i_out_width, int i_out_height,
923 const video_format_t *p_in_fmt )
925 filter_t *p_blend = p_spu->p->p_blend;
930 if( p_blend->p_module && p_blend->fmt_in.video.i_chroma != p_in_fmt->i_chroma )
932 /* The chroma is not the same, we need to reload the blend module
933 * XXX to match the old behaviour just test !p_blend->fmt_in.video.i_chroma */
934 module_unneed( p_blend, p_blend->p_module );
935 p_blend->p_module = NULL;
939 p_blend->fmt_in.video = *p_in_fmt;
942 p_blend->fmt_out.video.i_width =
943 p_blend->fmt_out.video.i_visible_width = i_out_width;
944 p_blend->fmt_out.video.i_height =
945 p_blend->fmt_out.video.i_visible_height = i_out_height;
948 if( !p_blend->p_module )
949 p_blend->p_module = module_need( p_blend, "video blending", 0, 0 );
951 static void SpuRenderCreateAndLoadText( spu_t *p_spu )
955 assert( !p_spu->p->p_text );
958 p_text = vlc_custom_create( p_spu, sizeof(filter_t),
959 VLC_OBJECT_GENERIC, "spu text" );
963 es_format_Init( &p_text->fmt_in, VIDEO_ES, 0 );
965 es_format_Init( &p_text->fmt_out, VIDEO_ES, 0 );
966 p_text->fmt_out.video.i_width =
967 p_text->fmt_out.video.i_visible_width = 32;
968 p_text->fmt_out.video.i_height =
969 p_text->fmt_out.video.i_visible_height = 32;
971 p_text->pf_sub_buffer_new = spu_new_buffer;
972 p_text->pf_sub_buffer_del = spu_del_buffer;
974 vlc_object_attach( p_text, p_spu );
976 /* FIXME TOCHECK shouldn't module_need( , , psz_modulename, false ) do the
977 * same than these 2 calls ? */
978 char *psz_modulename = var_CreateGetString( p_spu, "text-renderer" );
979 if( psz_modulename && *psz_modulename )
981 p_text->p_module = module_need( p_text, "text renderer",
982 psz_modulename, true );
984 free( psz_modulename );
986 if( !p_text->p_module )
987 p_text->p_module = module_need( p_text, "text renderer", NULL, false );
989 /* Create a few variables used for enhanced text rendering */
990 var_Create( p_text, "spu-duration", VLC_VAR_TIME );
991 var_Create( p_text, "spu-elapsed", VLC_VAR_TIME );
992 var_Create( p_text, "text-rerender", VLC_VAR_BOOL );
993 var_Create( p_text, "scale", VLC_VAR_INTEGER );
996 static filter_t *CreateAndLoadScale( vlc_object_t *p_obj,
997 vlc_fourcc_t i_src_chroma, vlc_fourcc_t i_dst_chroma,
1002 p_scale = vlc_custom_create( p_obj, sizeof(filter_t),
1003 VLC_OBJECT_GENERIC, "scale" );
1007 es_format_Init( &p_scale->fmt_in, VIDEO_ES, 0 );
1008 p_scale->fmt_in.video.i_chroma = i_src_chroma;
1009 p_scale->fmt_in.video.i_width =
1010 p_scale->fmt_in.video.i_height = 32;
1012 es_format_Init( &p_scale->fmt_out, VIDEO_ES, 0 );
1013 p_scale->fmt_out.video.i_chroma = i_dst_chroma;
1014 p_scale->fmt_out.video.i_width =
1015 p_scale->fmt_out.video.i_height = b_resize ? 16 : 32;
1017 p_scale->pf_vout_buffer_new = spu_new_video_buffer;
1018 p_scale->pf_vout_buffer_del = spu_del_video_buffer;
1020 vlc_object_attach( p_scale, p_obj );
1021 p_scale->p_module = module_need( p_scale, "video filter2", 0, 0 );
1025 static void SpuRenderCreateAndLoadScale( spu_t *p_spu )
1027 assert( !p_spu->p->p_scale );
1028 assert( !p_spu->p->p_scale_yuvp );
1029 /* XXX p_spu->p_scale is used for all conversion/scaling except yuvp to
1031 p_spu->p->p_scale = CreateAndLoadScale( VLC_OBJECT(p_spu),
1032 VLC_FOURCC_YUVA, VLC_FOURCC_YUVA, true );
1033 /* This one is used for YUVP to YUVA/RGBA without scaling
1034 * FIXME rename it */
1035 p_spu->p->p_scale_yuvp = CreateAndLoadScale( VLC_OBJECT(p_spu),
1036 VLC_FOURCC_YUVP, VLC_FOURCC_YUVA, false );
1039 static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
1040 subpicture_t *p_subpic, subpicture_region_t *p_region,
1041 int i_min_scale_ratio )
1043 filter_t *p_text = p_spu->p->p_text;
1045 assert( p_region->fmt.i_chroma == VLC_FOURCC_TEXT );
1047 if( !p_text || !p_text->p_module )
1050 /* Setup 3 variables which can be used to render
1051 * time-dependent text (and effects). The first indicates
1052 * the total amount of time the text will be on screen,
1053 * the second the amount of time it has already been on
1054 * screen (can be a negative value as text is layed out
1055 * before it is rendered) and the third is a feedback
1056 * variable from the renderer - if the renderer sets it
1057 * then this particular text is time-dependent, eg. the
1058 * visual progress bar inside the text in karaoke and the
1059 * text needs to be rendered multiple times in order for
1060 * the effect to work - we therefore need to return the
1061 * region to its original state at the end of the loop,
1062 * instead of leaving it in YUVA or YUVP.
1063 * Any renderer which is unaware of how to render
1064 * time-dependent text can happily ignore the variables
1065 * and render the text the same as usual - it should at
1066 * least show up on screen, but the effect won't change
1067 * the text over time.
1069 var_SetTime( p_text, "spu-duration", p_subpic->i_stop - p_subpic->i_start );
1070 var_SetTime( p_text, "spu-elapsed", mdate() - p_subpic->i_start );
1071 var_SetBool( p_text, "text-rerender", false );
1072 var_SetInteger( p_text, "scale", i_min_scale_ratio );
1074 if( p_text->pf_render_html && p_region->psz_html )
1076 p_text->pf_render_html( p_text, p_region, p_region );
1078 else if( p_text->pf_render_text )
1080 p_text->pf_render_text( p_text, p_region, p_region );
1082 *pb_rerender_text = var_GetBool( p_text, "text-rerender" );
1085 p_region->i_align |= SUBPICTURE_RENDERED;
1089 * A few scale functions helpers.
1091 static spu_scale_t spu_scale_create( int w, int h )
1093 spu_scale_t s = { .w = w, .h = h };
1100 static spu_scale_t spu_scale_unit( void )
1102 return spu_scale_create( SCALE_UNIT, SCALE_UNIT );
1104 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd )
1106 return spu_scale_create( wn * SCALE_UNIT / wd,
1107 hn * SCALE_UNIT / hd );
1109 static int spu_scale_w( int v, const spu_scale_t s )
1111 return v * s.w / SCALE_UNIT;
1113 static int spu_scale_h( int v, const spu_scale_t s )
1115 return v * s.h / SCALE_UNIT;
1117 static int spu_invscale_w( int v, const spu_scale_t s )
1119 return v * SCALE_UNIT / s.w;
1121 static int spu_invscale_h( int v, const spu_scale_t s )
1123 return v * SCALE_UNIT / s.h;
1127 * A few area functions helpers
1129 static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t s )
1131 spu_area_t a = { .i_x = x, .i_y = y, .i_width = w, .i_height = h, .scale = s };
1134 static spu_area_t spu_area_scaled( spu_area_t a )
1136 if( a.scale.w == SCALE_UNIT && a.scale.h == SCALE_UNIT )
1139 a.i_x = spu_scale_w( a.i_x, a.scale );
1140 a.i_y = spu_scale_h( a.i_y, a.scale );
1142 a.i_width = spu_scale_w( a.i_width, a.scale );
1143 a.i_height = spu_scale_h( a.i_height, a.scale );
1145 a.scale = spu_scale_unit();
1148 static spu_area_t spu_area_unscaled( spu_area_t a, spu_scale_t s )
1150 if( a.scale.w == s.w && a.scale.h == s.h )
1153 a = spu_area_scaled( a );
1155 a.i_x = spu_invscale_w( a.i_x, s );
1156 a.i_y = spu_invscale_h( a.i_y, s );
1158 a.i_width = spu_invscale_w( a.i_width, s );
1159 a.i_height = spu_invscale_h( a.i_height, s );
1164 static bool spu_area_overlap( spu_area_t a, spu_area_t b )
1169 a = spu_area_scaled( a );
1170 b = spu_area_scaled( b );
1172 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 ) &&
1173 __MAX( a.i_y-i_dy, b.i_y ) < __MIN( a.i_y+a.i_height+i_dy, b.i_y+b.i_height );
1177 * Avoid area overlapping
1179 static void SpuAreaFixOverlap( spu_area_t *p_dst,
1180 const spu_area_t *p_master,
1181 const spu_area_t *p_sub, int i_sub, int i_align )
1183 spu_area_t a = spu_area_scaled( *p_dst );
1184 bool b_moved = false;
1187 assert( p_master->i_x == 0 && p_master->i_y == 0 );
1189 /* Check for overlap
1190 * XXX It is not fast O(n^2) but we should not have a lot of region */
1194 for( int i = 0; i < i_sub; i++ )
1196 spu_area_t sub = spu_area_scaled( p_sub[i] );
1198 if( !spu_area_overlap( a, sub ) )
1201 if( i_align & SUBPICTURE_ALIGN_TOP )
1204 int i_y = sub.i_y + sub.i_height;
1205 if( i_y + a.i_height > p_master->i_height )
1210 else if( i_align & SUBPICTURE_ALIGN_BOTTOM )
1213 int i_y = sub.i_y - a.i_height;
1221 /* TODO what to do in this case? */
1222 //fprintf( stderr, "Overlap with unsupported alignment\n" );
1232 *p_dst = spu_area_unscaled( a, p_dst->scale );
1239 static void SpuRegionPlace( int *pi_x, int *pi_y,
1240 const subpicture_t *p_subpic,
1241 const subpicture_region_t *p_region,
1244 const int i_delta_x = p_region->i_x;
1245 const int i_delta_y = p_region->i_y;
1248 assert( p_region->i_x != INT_MAX && p_region->i_y != INT_MAX );
1249 if( p_region->i_align & SUBPICTURE_ALIGN_TOP )
1253 else if( p_region->i_align & SUBPICTURE_ALIGN_BOTTOM )
1255 i_y = p_subpic->i_original_picture_height - p_region->fmt.i_height - i_delta_y;
1259 i_y = p_subpic->i_original_picture_height / 2 - p_region->fmt.i_height / 2;
1262 if( p_region->i_align & SUBPICTURE_ALIGN_LEFT )
1266 else if( p_region->i_align & SUBPICTURE_ALIGN_RIGHT )
1268 i_x = p_subpic->i_original_picture_width - p_region->fmt.i_width - i_delta_x;
1272 i_x = p_subpic->i_original_picture_width / 2 - p_region->fmt.i_width / 2;
1275 if( p_subpic->b_absolute )
1281 /* Margin shifts all subpictures */
1282 if( i_margin_y != 0 )
1285 /* Clamp offset to not go out of the screen (when possible) */
1286 const int i_error_x = (i_x + p_region->fmt.i_width) - p_subpic->i_original_picture_width;
1292 const int i_error_y = (i_y + p_region->fmt.i_height) - p_subpic->i_original_picture_height;
1303 * This function computes the current alpha value for a given region.
1305 static int SpuRegionAlpha( subpicture_t *p_subpic, subpicture_region_t *p_region )
1307 /* Compute alpha blend value */
1308 int i_fade_alpha = 255;
1309 if( p_subpic->b_fade )
1311 mtime_t i_fade_start = ( p_subpic->i_stop +
1312 p_subpic->i_start ) / 2;
1313 mtime_t i_now = mdate();
1315 if( i_now >= i_fade_start && p_subpic->i_stop > i_fade_start )
1317 i_fade_alpha = 255 * ( p_subpic->i_stop - i_now ) /
1318 ( p_subpic->i_stop - i_fade_start );
1321 return i_fade_alpha * p_subpic->i_alpha * p_region->i_alpha / 65025;
1325 * It will render the provided region onto p_pic_dst.
1328 static void SpuRenderRegion( spu_t *p_spu,
1329 picture_t *p_pic_dst, spu_area_t *p_area,
1330 subpicture_t *p_subpic, subpicture_region_t *p_region,
1331 const spu_scale_t scale_size,
1332 const video_format_t *p_fmt,
1333 const spu_area_t *p_subtitle_area, int i_subtitle_area )
1335 spu_private_t *p_sys = p_spu->p;
1337 video_format_t fmt_original = p_region->fmt;
1338 bool b_rerender_text = false;
1339 bool b_restore_format = false;
1343 video_format_t region_fmt;
1344 picture_t *p_region_picture;
1346 /* Invalidate area by default */
1347 *p_area = spu_area_create( 0,0, 0,0, scale_size );
1349 /* Render text region */
1350 if( p_region->fmt.i_chroma == VLC_FOURCC_TEXT )
1352 const int i_min_scale_ratio = SCALE_UNIT; /* FIXME what is the right value? (scale_size is not) */
1353 SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region, i_min_scale_ratio );
1354 b_restore_format = b_rerender_text;
1356 /* Check if the rendering has failed ... */
1357 if( p_region->fmt.i_chroma == VLC_FOURCC_TEXT )
1361 /* Force palette if requested
1362 * FIXME b_force_palette and b_force_crop are applied to all subpictures using palette
1363 * instead of only the right one (being the dvd spu).
1365 const bool b_using_palette = p_region->fmt.i_chroma == VLC_FOURCC_YUVP;
1366 const bool b_force_palette = b_using_palette && p_sys->b_force_palette;
1367 const bool b_force_crop = b_force_palette && p_sys->b_force_crop;
1368 bool b_changed_palette = false;
1371 /* Compute the margin which is expressed in destination pixel unit
1372 * The margin is applied only to subtitle and when no forced crop is
1373 * requested (dvd menu) */
1375 if( !b_force_crop && p_subpic->b_subtitle )
1376 i_margin_y = spu_invscale_h( p_sys->i_margin, scale_size );
1378 /* Place the picture
1379 * We compute the position in the rendered size */
1380 SpuRegionPlace( &i_x_offset, &i_y_offset,
1381 p_subpic, p_region, i_margin_y );
1383 /* Save this position for subtitle overlap support
1384 * it is really important that there are given without scale_size applied */
1385 *p_area = spu_area_create( i_x_offset, i_y_offset,
1386 p_region->fmt.i_width, p_region->fmt.i_height,
1389 /* Handle overlapping subtitles when possible */
1390 if( p_subpic->b_subtitle && !p_subpic->b_absolute )
1392 spu_area_t display = spu_area_create( 0, 0, p_fmt->i_width, p_fmt->i_height,
1395 SpuAreaFixOverlap( p_area, &display, p_subtitle_area, i_subtitle_area,
1396 p_region->i_align );
1399 /* Fix the position for the current scale_size */
1400 i_x_offset = spu_scale_w( p_area->i_x, p_area->scale );
1401 i_y_offset = spu_scale_h( p_area->i_y, p_area->scale );
1404 if( b_force_palette )
1406 video_palette_t *p_palette = p_region->fmt.p_palette;
1407 video_palette_t palette;
1409 /* We suppose DVD palette here */
1410 palette.i_entries = 4;
1411 for( int i = 0; i < 4; i++ )
1412 for( int j = 0; j < 4; j++ )
1413 palette.palette[i][j] = p_sys->palette[i][j];
1415 if( p_palette->i_entries == palette.i_entries )
1417 for( int i = 0; i < p_palette->i_entries; i++ )
1418 for( int j = 0; j < 4; j++ )
1419 b_changed_palette |= p_palette->palette[i][j] != palette.palette[i][j];
1423 b_changed_palette = true;
1425 *p_palette = palette;
1429 region_fmt = p_region->fmt;
1430 p_region_picture = p_region->p_picture;
1433 /* Scale from rendered size to destination size */
1434 if( p_sys->p_scale && p_sys->p_scale->p_module &&
1435 ( !b_using_palette || ( p_sys->p_scale_yuvp && p_sys->p_scale_yuvp->p_module ) ) &&
1436 ( scale_size.w != SCALE_UNIT || scale_size.h != SCALE_UNIT || b_using_palette ) )
1438 const unsigned i_dst_width = spu_scale_w( p_region->fmt.i_width, scale_size );
1439 const unsigned i_dst_height = spu_scale_h( p_region->fmt.i_height, scale_size );
1441 /* Destroy the cache if unusable */
1442 if( p_region->p_private )
1444 subpicture_region_private_t *p_private = p_region->p_private;
1445 bool b_changed = false;
1447 /* Check resize changes */
1448 if( i_dst_width != p_private->fmt.i_width ||
1449 i_dst_height != p_private->fmt.i_height )
1452 /* Check forced palette changes */
1453 if( b_changed_palette )
1458 SpuRegionPrivateDelete( p_private );
1459 p_region->p_private = NULL;
1463 /* Scale if needed into cache */
1464 if( !p_region->p_private && i_dst_width > 0 && i_dst_height > 0 )
1466 filter_t *p_scale = p_sys->p_scale;
1468 picture_t *p_picture = p_region->p_picture;
1469 picture_Hold( p_picture );
1471 /* Convert YUVP to YUVA/RGBA first for better scaling quality */
1472 if( b_using_palette )
1474 filter_t *p_scale_yuvp = p_sys->p_scale_yuvp;
1476 p_scale_yuvp->fmt_in.video = p_region->fmt;
1478 /* TODO converting to RGBA for RGB video output is better */
1479 p_scale_yuvp->fmt_out.video = p_region->fmt;
1480 p_scale_yuvp->fmt_out.video.i_chroma = VLC_FOURCC_YUVA;
1482 p_picture = p_scale_yuvp->pf_video_filter( p_scale_yuvp, p_picture );
1485 /* Well we will try conversion+scaling */
1486 msg_Warn( p_spu, "%4.4s to %4.4s conversion failed",
1487 (const char*)&p_scale_yuvp->fmt_in.video.i_chroma,
1488 (const char*)&p_scale_yuvp->fmt_out.video.i_chroma );
1492 /* Conversion(except from YUVP)/Scaling */
1494 ( p_picture->format.i_width != i_dst_width ||
1495 p_picture->format.i_height != i_dst_height ) )
1497 p_scale->fmt_in.video = p_picture->format;
1498 p_scale->fmt_out.video = p_picture->format;
1500 p_scale->fmt_out.video.i_width = i_dst_width;
1501 p_scale->fmt_out.video.i_height = i_dst_height;
1503 p_scale->fmt_out.video.i_visible_width =
1504 spu_scale_w( p_region->fmt.i_visible_width, scale_size );
1505 p_scale->fmt_out.video.i_visible_height =
1506 spu_scale_h( p_region->fmt.i_visible_height, scale_size );
1508 p_picture = p_scale->pf_video_filter( p_scale, p_picture );
1510 msg_Err( p_spu, "scaling failed" );
1516 p_region->p_private = SpuRegionPrivateNew( &p_picture->format );
1517 if( p_region->p_private )
1519 p_region->p_private->p_picture = p_picture;
1520 if( !p_region->p_private->p_picture )
1522 SpuRegionPrivateDelete( p_region->p_private );
1523 p_region->p_private = NULL;
1528 picture_Release( p_picture );
1533 /* And use the scaled picture */
1534 if( p_region->p_private )
1536 region_fmt = p_region->p_private->fmt;
1537 p_region_picture = p_region->p_private->p_picture;
1541 /* Force cropping if requested */
1544 int i_crop_x = spu_scale_w( p_sys->i_crop_x, scale_size );
1545 int i_crop_y = spu_scale_h( p_sys->i_crop_y, scale_size );
1546 int i_crop_width = spu_scale_w( p_sys->i_crop_width, scale_size );
1547 int i_crop_height= spu_scale_h( p_sys->i_crop_height,scale_size );
1549 /* Find the intersection */
1550 if( i_crop_x + i_crop_width <= i_x_offset ||
1551 i_x_offset + (int)region_fmt.i_visible_width < i_crop_x ||
1552 i_crop_y + i_crop_height <= i_y_offset ||
1553 i_y_offset + (int)region_fmt.i_visible_height < i_crop_y )
1555 /* No intersection */
1556 region_fmt.i_visible_width =
1557 region_fmt.i_visible_height = 0;
1561 int i_x, i_y, i_x_end, i_y_end;
1562 i_x = __MAX( i_crop_x, i_x_offset );
1563 i_y = __MAX( i_crop_y, i_y_offset );
1564 i_x_end = __MIN( i_crop_x + i_crop_width,
1565 i_x_offset + (int)region_fmt.i_visible_width );
1566 i_y_end = __MIN( i_crop_y + i_crop_height,
1567 i_y_offset + (int)region_fmt.i_visible_height );
1569 region_fmt.i_x_offset = i_x - i_x_offset;
1570 region_fmt.i_y_offset = i_y - i_y_offset;
1571 region_fmt.i_visible_width = i_x_end - i_x;
1572 region_fmt.i_visible_height = i_y_end - i_y;
1574 i_x_offset = __MAX( i_x, 0 );
1575 i_y_offset = __MAX( i_y, 0 );
1579 /* Update the blender */
1580 SpuRenderUpdateBlend( p_spu, p_fmt->i_width, p_fmt->i_height, ®ion_fmt );
1582 if( p_sys->p_blend->p_module )
1584 const int i_alpha = SpuRegionAlpha( p_subpic, p_region );
1586 p_sys->p_blend->pf_video_blend( p_sys->p_blend, p_pic_dst,
1587 p_region_picture, i_x_offset, i_y_offset, i_alpha );
1591 msg_Err( p_spu, "blending %4.4s to %4.4s failed",
1592 (char *)&p_sys->p_blend->fmt_out.video.i_chroma,
1593 (char *)&p_sys->p_blend->fmt_out.video.i_chroma );
1597 if( b_rerender_text )
1599 /* Some forms of subtitles need to be re-rendered more than
1600 * once, eg. karaoke. We therefore restore the region to its
1601 * pre-rendered state, so the next time through everything is
1604 picture_Release( p_region->p_picture );
1605 p_region->p_picture = NULL;
1606 if( p_region->p_private )
1608 SpuRegionPrivateDelete( p_region->p_private );
1609 p_region->p_private = NULL;
1611 p_region->i_align &= ~SUBPICTURE_RENDERED;
1613 if( b_restore_format )
1614 p_region->fmt = fmt_original;
1618 * This function compares two 64 bits integers.
1619 * It can be used by qsort.
1621 static int IntegerCmp( int64_t i0, int64_t i1 )
1623 return i0 < i1 ? -1 : i0 > i1 ? 1 : 0;
1626 * This function compares 2 subpictures using the following properties
1627 * (ordered by priority)
1628 * 1. absolute positionning
1630 * 3. creation order (per channel)
1632 * It can be used by qsort.
1634 * XXX spu_RenderSubpictures depends heavily on this order.
1636 static int SubpictureCmp( const void *s0, const void *s1 )
1638 subpicture_t *p_subpic0 = *(subpicture_t**)s0;
1639 subpicture_t *p_subpic1 = *(subpicture_t**)s1;
1642 r = IntegerCmp( !p_subpic0->b_absolute, !p_subpic1->b_absolute );
1644 r = IntegerCmp( p_subpic0->i_start, p_subpic1->i_start );
1646 r = IntegerCmp( p_subpic0->i_channel, p_subpic1->i_channel );
1648 r = IntegerCmp( p_subpic0->i_order, p_subpic1->i_order );
1652 /*****************************************************************************
1653 * SpuClearChannel: clear an spu channel
1654 *****************************************************************************
1655 * This function destroys the subpictures which belong to the spu channel
1656 * corresponding to i_channel_id.
1657 *****************************************************************************/
1658 static void SpuClearChannel( spu_t *p_spu, int i_channel, bool b_locked )
1660 spu_private_t *p_sys = p_spu->p;
1661 int i_subpic; /* subpicture index */
1664 vlc_mutex_lock( &p_sys->lock );
1666 vlc_assert_locked( &p_sys->lock );
1668 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
1670 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_subpic];
1671 subpicture_t *p_subpic = p_entry->p_subpicture;
1673 if( !p_subpic || p_subpic->i_channel != i_channel )
1676 /* You cannot delete subpicture outside of spu_SortSubpictures */
1677 p_entry->b_reject = true;
1681 vlc_mutex_unlock( &p_sys->lock );
1684 /*****************************************************************************
1685 * spu_ControlDefault: default methods for the subpicture unit control.
1686 *****************************************************************************/
1687 static int SpuControl( spu_t *p_spu, int i_query, va_list args )
1689 spu_private_t *p_sys = p_spu->p;
1694 case SPU_CHANNEL_REGISTER:
1695 pi = (int *)va_arg( args, int * );
1696 vlc_mutex_lock( &p_sys->lock );
1698 *pi = p_sys->i_channel++;
1699 vlc_mutex_unlock( &p_sys->lock );
1702 case SPU_CHANNEL_CLEAR:
1703 i = (int)va_arg( args, int );
1704 SpuClearChannel( p_spu, i, false );
1708 msg_Dbg( p_spu, "control query not supported" );
1709 return VLC_EGENERIC;
1715 /*****************************************************************************
1716 * Object variables callbacks
1717 *****************************************************************************/
1719 /*****************************************************************************
1720 * UpdateSPU: update subpicture settings
1721 *****************************************************************************
1722 * This function is called from CropCallback and at initialization time, to
1723 * retrieve crop information from the input.
1724 *****************************************************************************/
1725 static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
1727 spu_private_t *p_sys = p_spu->p;
1730 vlc_mutex_lock( &p_sys->lock );
1732 p_sys->b_force_palette = false;
1733 p_sys->b_force_crop = false;
1735 if( var_Get( p_object, "highlight", &val ) || !val.b_bool )
1737 vlc_mutex_unlock( &p_sys->lock );
1741 p_sys->b_force_crop = true;
1742 p_sys->i_crop_x = var_GetInteger( p_object, "x-start" );
1743 p_sys->i_crop_y = var_GetInteger( p_object, "y-start" );
1744 p_sys->i_crop_width = var_GetInteger( p_object, "x-end" ) - p_sys->i_crop_x;
1745 p_sys->i_crop_height = var_GetInteger( p_object, "y-end" ) - p_sys->i_crop_y;
1747 if( var_Get( p_object, "menu-palette", &val ) == VLC_SUCCESS )
1749 memcpy( p_sys->palette, val.p_address, 16 );
1750 p_sys->b_force_palette = true;
1752 vlc_mutex_unlock( &p_sys->lock );
1754 msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
1755 p_sys->i_crop_x, p_sys->i_crop_y,
1756 p_sys->i_crop_width, p_sys->i_crop_height,
1757 p_sys->b_force_palette );
1760 /*****************************************************************************
1761 * CropCallback: called when the highlight properties are changed
1762 *****************************************************************************
1763 * This callback is called from the input thread when we need cropping
1764 *****************************************************************************/
1765 static int CropCallback( vlc_object_t *p_object, char const *psz_var,
1766 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1768 VLC_UNUSED(oldval); VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1770 UpdateSPU( (spu_t *)p_data, p_object );
1774 /*****************************************************************************
1775 * Buffers allocation callbacks for the filters
1776 *****************************************************************************/
1777 struct filter_owner_sys_t
1783 static subpicture_t *sub_new_buffer( filter_t *p_filter )
1785 filter_owner_sys_t *p_sys = p_filter->p_owner;
1787 subpicture_t *p_subpicture = subpicture_New();
1789 p_subpicture->i_channel = p_sys->i_channel;
1790 return p_subpicture;
1792 static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1794 VLC_UNUSED( p_filter );
1795 subpicture_Delete( p_subpic );
1798 static subpicture_t *spu_new_buffer( filter_t *p_filter )
1800 VLC_UNUSED(p_filter);
1801 return subpicture_New();
1803 static void spu_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1805 VLC_UNUSED(p_filter);
1806 subpicture_Delete( p_subpic );
1809 static picture_t *spu_new_video_buffer( filter_t *p_filter )
1811 const video_format_t *p_fmt = &p_filter->fmt_out.video;
1813 VLC_UNUSED(p_filter);
1814 return picture_New( p_fmt->i_chroma,
1815 p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
1817 static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_picture )
1819 VLC_UNUSED(p_filter);
1820 picture_Release( p_picture );
1823 static int SubFilterAllocationInit( filter_t *p_filter, void *p_data )
1825 spu_t *p_spu = p_data;
1827 filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
1829 return VLC_EGENERIC;
1831 p_filter->pf_sub_buffer_new = sub_new_buffer;
1832 p_filter->pf_sub_buffer_del = sub_del_buffer;
1834 p_filter->p_owner = p_sys;
1835 spu_Control( p_spu, SPU_CHANNEL_REGISTER, &p_sys->i_channel );
1836 p_sys->p_spu = p_spu;
1841 static void SubFilterAllocationClean( filter_t *p_filter )
1843 filter_owner_sys_t *p_sys = p_filter->p_owner;
1845 SpuClearChannel( p_sys->p_spu, p_sys->i_channel, true );
1846 free( p_filter->p_owner );
1849 static int SubFilterCallback( vlc_object_t *p_object, char const *psz_var,
1850 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1852 spu_t *p_spu = p_data;
1853 spu_private_t *p_sys = p_spu->p;
1855 VLC_UNUSED(p_object); VLC_UNUSED(oldval);
1856 VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1858 vlc_mutex_lock( &p_sys->lock );
1859 filter_chain_Reset( p_sys->p_chain, NULL, NULL );
1860 spu_ParseChain( p_spu );
1861 vlc_mutex_unlock( &p_sys->lock );