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"
43 /*****************************************************************************
45 *****************************************************************************/
46 #define VLC_FOURCC_YUVP VLC_FOURCC('Y','U','V','P')
47 #define VLC_FOURCC_YUVA VLC_FOURCC('Y','U','V','A')
48 #define VLC_FOURCC_RGBA VLC_FOURCC('R','G','B','A')
49 #define VLC_FOURCC_TEXT VLC_FOURCC('T','E','X','T')
52 static subpicture_t *subpicture_New( void );
53 static void subpicture_Delete( subpicture_t *p_subpic );
54 static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic );
59 subpicture_t *p_subpicture;
65 spu_heap_entry_t p_entry[VOUT_MAX_SUBPICTURES];
69 static void SpuHeapInit( spu_heap_t * );
70 static int SpuHeapPush( spu_heap_t *, subpicture_t * );
71 static void SpuHeapDeleteAt( spu_heap_t *, int i_index );
72 static int SpuHeapDeleteSubpicture( spu_heap_t *, subpicture_t * );
73 static void SpuHeapClean( spu_heap_t *p_heap );
77 vlc_mutex_t lock; /* lock to protect all followings fields */
81 int i_channel; /**< number of subpicture channels registered */
82 filter_t *p_blend; /**< alpha blending module */
83 filter_t *p_text; /**< text renderer module */
84 filter_t *p_scale_yuvp; /**< scaling module for YUVP */
85 filter_t *p_scale; /**< scaling module (all but YUVP) */
86 bool b_force_crop; /**< force cropping of subpicture */
87 int i_crop_x, i_crop_y, i_crop_width, i_crop_height; /**< cropping */
89 int i_margin; /**< force position of a subpicture */
90 bool b_force_palette; /**< force palette of subpicture */
91 uint8_t palette[4][4]; /**< forced palette */
93 /* Supciture filters */
94 filter_chain_t *p_chain;
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 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 );
234 * Initialise the subpicture unit
236 * \param p_spu the subpicture unit object
238 int spu_Init( spu_t *p_spu )
240 spu_private_t *p_sys = p_spu->p;
242 /* If the user requested a sub margin, we force the position. */
243 p_sys->i_margin = var_CreateGetInteger( p_spu, "sub-margin" );
245 var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
246 var_AddCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
248 spu_ParseChain( p_spu );
253 int spu_ParseChain( spu_t *p_spu )
255 char *psz_parser = var_GetString( p_spu, "sub-filter" );
261 i_ret = filter_chain_AppendFromString( p_spu->p->p_chain, psz_parser );
269 * Destroy the subpicture unit
271 * \param p_this the parent object which destroys the subpicture unit
273 void spu_Destroy( spu_t *p_spu )
275 spu_private_t *p_sys = p_spu->p;
278 FilterRelease( p_sys->p_blend );
281 FilterRelease( p_sys->p_text );
283 if( p_sys->p_scale_yuvp )
284 FilterRelease( p_sys->p_scale_yuvp );
287 FilterRelease( p_sys->p_scale );
289 filter_chain_Delete( p_sys->p_chain );
291 /* Destroy all remaining subpictures */
292 SpuHeapClean( &p_sys->heap );
294 vlc_mutex_destroy( &p_sys->lock );
296 vlc_object_release( p_spu );
300 * Attach/Detach the SPU from any input
302 * \param p_this the object in which to destroy the subpicture unit
303 * \param b_attach to select attach or detach
305 void spu_Attach( spu_t *p_spu, vlc_object_t *p_this, bool b_attach )
307 vlc_object_t *p_input;
309 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
310 if( !p_input ) return;
314 UpdateSPU( p_spu, VLC_OBJECT(p_input) );
315 var_AddCallback( p_input, "highlight", CropCallback, p_spu );
316 vlc_object_release( p_input );
320 /* Delete callback */
321 var_DelCallback( p_input, "highlight", CropCallback, p_spu );
322 vlc_object_release( p_input );
327 * Display a subpicture
329 * Remove the reservation flag of a subpicture, which will cause it to be
331 * \param p_spu the subpicture unit object
332 * \param p_subpic the subpicture to display
334 void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
336 spu_private_t *p_sys = p_spu->p;
338 /* DEFAULT_CHAN always reset itself */
339 if( p_subpic->i_channel == DEFAULT_CHAN )
340 SpuClearChannel( p_spu, DEFAULT_CHAN, false );
342 /* p_private is for spu only and cannot be non NULL here */
343 for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
344 assert( r->p_private == NULL );
347 vlc_mutex_lock( &p_sys->lock );
348 if( SpuHeapPush( &p_sys->heap, p_subpic ) )
350 vlc_mutex_unlock( &p_sys->lock );
351 msg_Err( p_spu, "subpicture heap full" );
352 subpicture_Delete( p_subpic );
355 vlc_mutex_unlock( &p_sys->lock );
359 * Allocate a subpicture in the spu heap.
361 * This function create a reserved subpicture in the spu heap.
362 * A null pointer is returned if the function fails. This method provides an
363 * already allocated zone of memory in the spu data fields. It needs locking
364 * since several pictures can be created by several producers threads.
365 * \param p_spu the subpicture unit in which to create the subpicture
366 * \return NULL on error, a reserved subpicture otherwise
368 subpicture_t *spu_CreateSubpicture( spu_t *p_spu )
372 return subpicture_New();
376 * Remove a subpicture from the heap
378 * This function frees a previously reserved subpicture.
379 * It is meant to be used when the construction of a picture aborted.
380 * This function does not need locking since reserved subpictures are ignored
383 void spu_DestroySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
387 subpicture_Delete( p_subpic );
391 * This function renders all sub picture units in the list.
393 void spu_RenderSubpictures( spu_t *p_spu,
394 picture_t *p_pic_dst, const video_format_t *p_fmt_dst,
395 subpicture_t *p_subpic_list,
396 const video_format_t *p_fmt_src )
398 spu_private_t *p_sys = p_spu->p;
400 const int i_source_video_width = p_fmt_src->i_width;
401 const int i_source_video_height = p_fmt_src->i_height;
402 const mtime_t i_current_date = mdate();
404 unsigned int i_subpicture;
405 subpicture_t *pp_subpicture[VOUT_MAX_SUBPICTURES];
407 unsigned int i_subtitle_region_count;
408 spu_area_t p_subtitle_area_buffer[VOUT_MAX_SUBPICTURES];
409 spu_area_t *p_subtitle_area;
412 vlc_mutex_lock( &p_sys->lock );
414 /* Preprocess subpictures */
416 i_subtitle_region_count = 0;
417 for( subpicture_t * p_subpic = p_subpic_list;
419 p_subpic = p_subpic->p_next )
422 if( p_subpic->pf_pre_render )
423 p_subpic->pf_pre_render( p_spu, p_subpic, p_fmt_dst );
425 if( p_subpic->pf_update_regions )
427 video_format_t fmt_org = *p_fmt_dst;
429 fmt_org.i_visible_width = i_source_video_width;
431 fmt_org.i_visible_height = i_source_video_height;
433 p_subpic->pf_update_regions( p_spu, p_subpic, &fmt_org, i_current_date );
437 if( p_subpic->b_subtitle )
439 for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
440 i_subtitle_region_count++;
444 pp_subpicture[i_subpicture++] = p_subpic;
447 /* Be sure we have at least 1 picture to process */
448 if( i_subpicture <= 0 )
450 vlc_mutex_unlock( &p_sys->lock );
454 /* Now order subpicture array
455 * XXX The order is *really* important for overlap subtitles positionning */
456 qsort( pp_subpicture, i_subpicture, sizeof(*pp_subpicture), SubpictureCmp );
458 /* Allocate area array for subtitle overlap */
460 p_subtitle_area = p_subtitle_area_buffer;
461 if( i_subtitle_region_count > sizeof(p_subtitle_area_buffer)/sizeof(*p_subtitle_area_buffer) )
462 p_subtitle_area = calloc( i_subtitle_region_count, sizeof(*p_subtitle_area) );
464 /* Create the blending module */
465 if( !p_sys->p_blend )
466 SpuRenderCreateBlend( p_spu, p_fmt_dst->i_chroma, p_fmt_dst->i_aspect );
468 /* Process all subpictures and regions (in the right order) */
469 for( unsigned int i_index = 0; i_index < i_subpicture; i_index++ )
471 subpicture_t *p_subpic = pp_subpicture[i_index];
472 subpicture_region_t *p_region;
474 if( !p_subpic->p_region )
477 /* FIXME when possible use a better rendering size than source size
478 * (max of display size and source size for example) FIXME */
479 int i_render_width = p_subpic->i_original_picture_width;
480 int i_render_height = p_subpic->i_original_picture_height;
481 if( !i_render_width || !i_render_height )
483 if( i_render_width != 0 || i_render_height != 0 )
484 msg_Err( p_spu, "unsupported original picture size %dx%d",
485 i_render_width, i_render_height );
487 p_subpic->i_original_picture_width = i_render_width = i_source_video_width;
488 p_subpic->i_original_picture_height = i_render_height = i_source_video_height;
493 p_sys->p_text->fmt_out.video.i_width =
494 p_sys->p_text->fmt_out.video.i_visible_width = i_render_width;
496 p_sys->p_text->fmt_out.video.i_height =
497 p_sys->p_text->fmt_out.video.i_visible_height = i_render_height;
500 /* Compute scaling from picture to source size */
501 spu_scale_t scale = spu_scale_createq( i_source_video_width, i_render_width,
502 i_source_video_height, i_render_height );
504 /* Update scaling from source size to display size(p_fmt_dst) */
505 scale.w = scale.w * p_fmt_dst->i_width / i_source_video_width;
506 scale.h = scale.h * p_fmt_dst->i_height / i_source_video_height;
508 /* Set default subpicture aspect ratio
509 * FIXME if we only handle 1 aspect ratio per picture, why is it set per
511 p_region = p_subpic->p_region;
512 if( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den )
514 if( p_region->fmt.i_aspect != 0 )
516 p_region->fmt.i_sar_den = p_region->fmt.i_aspect;
517 p_region->fmt.i_sar_num = VOUT_ASPECT_FACTOR;
521 p_region->fmt.i_sar_den = p_fmt_dst->i_sar_den;
522 p_region->fmt.i_sar_num = p_fmt_dst->i_sar_num;
526 /* Take care of the aspect ratio */
527 if( p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den !=
528 p_region->fmt.i_sar_den * p_fmt_dst->i_sar_num )
530 /* FIXME FIXME what about region->i_x/i_y ? */
532 (int64_t)p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den /
533 p_region->fmt.i_sar_den / p_fmt_dst->i_sar_num;
536 /* Render all regions
537 * We always transform non absolute subtitle into absolute one on the
538 * first rendering to allow good subtitle overlap support.
540 for( p_region = p_subpic->p_region; p_region != NULL; p_region = p_region->p_next )
544 /* Check scale validity */
545 if( scale.w <= 0 || scale.h <= 0 )
549 SpuRenderRegion( p_spu, p_pic_dst, &area,
550 p_subpic, p_region, scale, p_fmt_dst,
551 p_subtitle_area, i_subtitle_area );
553 if( p_subpic->b_subtitle )
555 area = spu_area_unscaled( area, scale );
556 if( !p_subpic->b_absolute && area.i_width > 0 && area.i_height > 0 )
558 p_region->i_x = area.i_x;
559 p_region->i_y = area.i_y;
561 if( p_subtitle_area )
562 p_subtitle_area[i_subtitle_area++] = area;
565 if( p_subpic->b_subtitle )
566 p_subpic->b_absolute = true;
570 if( p_subtitle_area != p_subtitle_area_buffer )
571 free( p_subtitle_area );
573 vlc_mutex_unlock( &p_sys->lock );
576 /*****************************************************************************
577 * spu_SortSubpictures: find the subpictures to display
578 *****************************************************************************
579 * This function parses all subpictures and decides which ones need to be
580 * displayed. If no picture has been selected, display_date will depend on
582 * We also check for ephemer DVD subpictures (subpictures that have
583 * to be removed if a newer one is available), which makes it a lot
584 * more difficult to guess if a subpicture has to be rendered or not.
585 *****************************************************************************/
586 subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t display_date,
587 bool b_paused, bool b_subtitle_only )
589 spu_private_t *p_sys = p_spu->p;
591 subpicture_t *p_subpic = NULL;
593 /* Run subpicture filters */
594 filter_chain_SubFilter( p_sys->p_chain, display_date );
596 vlc_mutex_lock( &p_sys->lock );
598 /* We get an easily parsable chained list of subpictures which
599 * ends with NULL since p_subpic was initialized to NULL. */
600 for( i_channel = 0; i_channel < p_sys->i_channel; i_channel++ )
602 subpicture_t *p_ephemer = NULL;
603 mtime_t ephemer_date = 0;
606 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
608 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_index];
609 subpicture_t *p_current = p_entry->p_subpicture;
611 if( !p_current || p_entry->b_reject )
613 if( p_entry->b_reject )
614 SpuHeapDeleteAt( &p_sys->heap, i_index );
618 if( p_current->i_channel != i_channel ||
619 ( b_subtitle_only && !p_current->b_subtitle ) )
624 display_date < p_current->i_start )
626 /* Too early, come back next monday */
630 if( p_current->i_start > ephemer_date )
631 ephemer_date = p_current->i_start;
633 if( display_date > p_current->i_stop &&
634 ( !p_current->b_ephemer || p_current->i_stop > p_current->i_start ) &&
635 !( p_current->b_subtitle && b_paused ) ) /* XXX Assume that subtitle are pausable */
637 SpuHeapDeleteAt( &p_sys->heap, i_index );
639 else if( p_current->b_ephemer )
641 SubpictureChain( &p_ephemer, p_current );
645 SubpictureChain( &p_subpic, p_current );
649 /* If we found ephemer subpictures, check if they have to be
650 * displayed or destroyed */
651 while( p_ephemer != NULL )
653 subpicture_t *p_tmp = p_ephemer;
654 p_ephemer = p_ephemer->p_next;
656 if( p_tmp->i_start < ephemer_date )
658 SpuHeapDeleteSubpicture( &p_sys->heap, p_tmp );
662 SubpictureChain( &p_subpic, p_tmp );
666 vlc_mutex_unlock( &p_sys->lock );
671 /*****************************************************************************
672 * subpicture_t allocation
673 *****************************************************************************/
675 * This function create a new empty subpicture.
677 static subpicture_t *subpicture_New( void )
679 subpicture_t *p_subpic = calloc( 1, sizeof(*p_subpic) );
683 p_subpic->i_order = 0;
684 p_subpic->b_absolute = true;
685 p_subpic->b_fade = false;
686 p_subpic->b_subtitle = false;
687 p_subpic->i_alpha = 0xFF;
688 p_subpic->p_region = NULL;
689 p_subpic->pf_render = NULL;
690 p_subpic->pf_destroy = NULL;
691 p_subpic->p_sys = NULL;
696 static void subpicture_Delete( subpicture_t *p_subpic )
698 subpicture_region_ChainDelete( p_subpic->p_region );
699 p_subpic->p_region = NULL;
701 if( p_subpic->pf_destroy )
703 p_subpic->pf_destroy( p_subpic );
708 static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic )
710 p_subpic->p_next = *pp_head;
715 /*****************************************************************************
716 * subpicture_region_t allocation
717 *****************************************************************************/
718 subpicture_region_t *subpicture_region_New( const video_format_t *p_fmt )
720 subpicture_region_t *p_region = calloc( 1, sizeof(*p_region ) );
724 p_region->fmt = *p_fmt;
725 p_region->fmt.p_palette = NULL;
726 if( p_fmt->i_chroma == VLC_FOURCC_YUVP )
728 p_region->fmt.p_palette = calloc( 1, sizeof(*p_region->fmt.p_palette) );
729 if( p_fmt->p_palette )
730 *p_region->fmt.p_palette = *p_fmt->p_palette;
732 p_region->i_alpha = 0xff;
733 p_region->p_next = NULL;
734 p_region->p_private = NULL;
735 p_region->psz_text = NULL;
736 p_region->p_style = NULL;
737 p_region->p_picture = NULL;
739 if( p_fmt->i_chroma == VLC_FOURCC_TEXT )
742 p_region->p_picture = picture_New( p_fmt->i_chroma, p_fmt->i_width, p_fmt->i_height,
744 if( !p_region->p_picture )
746 free( p_fmt->p_palette );
755 void subpicture_region_Delete( subpicture_region_t *p_region )
760 if( p_region->p_private )
761 SpuRegionPrivateDelete( p_region->p_private );
763 if( p_region->p_picture )
764 picture_Release( p_region->p_picture );
766 free( p_region->fmt.p_palette );
768 free( p_region->psz_text );
769 free( p_region->psz_html );
770 //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
775 void subpicture_region_ChainDelete( subpicture_region_t *p_head )
779 subpicture_region_t *p_next = p_head->p_next;
781 subpicture_region_Delete( p_head );
789 /*****************************************************************************
791 *****************************************************************************/
792 static void SpuHeapInit( spu_heap_t *p_heap )
794 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
796 spu_heap_entry_t *e = &p_heap->p_entry[i];
798 e->p_subpicture = NULL;
803 static int SpuHeapPush( spu_heap_t *p_heap, subpicture_t *p_subpic )
805 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
807 spu_heap_entry_t *e = &p_heap->p_entry[i];
809 if( e->p_subpicture )
812 e->p_subpicture = p_subpic;
819 static void SpuHeapDeleteAt( spu_heap_t *p_heap, int i_index )
821 spu_heap_entry_t *e = &p_heap->p_entry[i_index];
823 if( e->p_subpicture )
824 subpicture_Delete( e->p_subpicture );
826 e->p_subpicture = NULL;
829 static int SpuHeapDeleteSubpicture( spu_heap_t *p_heap, subpicture_t *p_subpic )
831 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
833 spu_heap_entry_t *e = &p_heap->p_entry[i];
835 if( e->p_subpicture != p_subpic )
838 SpuHeapDeleteAt( p_heap, i );
844 static void SpuHeapClean( spu_heap_t *p_heap )
846 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
848 spu_heap_entry_t *e = &p_heap->p_entry[i];
849 if( e->p_subpicture )
850 subpicture_Delete( e->p_subpicture );
854 static subpicture_region_private_t *SpuRegionPrivateNew( video_format_t *p_fmt )
856 subpicture_region_private_t *p_private = malloc( sizeof(*p_private) );
861 p_private->fmt = *p_fmt;
862 if( p_fmt->p_palette )
864 p_private->fmt.p_palette = malloc( sizeof(*p_private->fmt.p_palette) );
865 if( p_private->fmt.p_palette )
866 *p_private->fmt.p_palette = *p_fmt->p_palette;
868 p_private->p_picture = NULL;
872 static void SpuRegionPrivateDelete( subpicture_region_private_t *p_private )
874 if( p_private->p_picture )
875 picture_Release( p_private->p_picture );
876 free( p_private->fmt.p_palette );
880 static void FilterRelease( filter_t *p_filter )
882 if( p_filter->p_module )
883 module_unneed( p_filter, p_filter->p_module );
885 vlc_object_detach( p_filter );
886 vlc_object_release( p_filter );
889 static void SpuRenderCreateBlend( spu_t *p_spu, vlc_fourcc_t i_chroma, int i_aspect )
893 assert( !p_spu->p->p_blend );
896 p_blend = vlc_custom_create( p_spu, sizeof(filter_t),
897 VLC_OBJECT_GENERIC, "blend" );
901 es_format_Init( &p_blend->fmt_in, VIDEO_ES, 0 );
903 es_format_Init( &p_blend->fmt_out, VIDEO_ES, 0 );
904 p_blend->fmt_out.video.i_x_offset = 0;
905 p_blend->fmt_out.video.i_y_offset = 0;
906 p_blend->fmt_out.video.i_chroma = i_chroma;
907 p_blend->fmt_out.video.i_aspect = i_aspect;
909 /* The blend module will be loaded when needed with the real
911 p_blend->p_module = NULL;
914 vlc_object_attach( p_blend, p_spu );
916 static void SpuRenderUpdateBlend( spu_t *p_spu, int i_out_width, int i_out_height,
917 const video_format_t *p_in_fmt )
919 filter_t *p_blend = p_spu->p->p_blend;
924 if( p_blend->p_module && p_blend->fmt_in.video.i_chroma != p_in_fmt->i_chroma )
926 /* The chroma is not the same, we need to reload the blend module
927 * XXX to match the old behaviour just test !p_blend->fmt_in.video.i_chroma */
928 module_unneed( p_blend, p_blend->p_module );
929 p_blend->p_module = NULL;
933 p_blend->fmt_in.video = *p_in_fmt;
936 p_blend->fmt_out.video.i_width =
937 p_blend->fmt_out.video.i_visible_width = i_out_width;
938 p_blend->fmt_out.video.i_height =
939 p_blend->fmt_out.video.i_visible_height = i_out_height;
942 if( !p_blend->p_module )
943 p_blend->p_module = module_need( p_blend, "video blending", 0, 0 );
945 static void SpuRenderCreateAndLoadText( spu_t *p_spu )
949 assert( !p_spu->p->p_text );
952 p_text = vlc_custom_create( p_spu, sizeof(filter_t),
953 VLC_OBJECT_GENERIC, "spu text" );
957 es_format_Init( &p_text->fmt_in, VIDEO_ES, 0 );
959 es_format_Init( &p_text->fmt_out, VIDEO_ES, 0 );
960 p_text->fmt_out.video.i_width =
961 p_text->fmt_out.video.i_visible_width = 32;
962 p_text->fmt_out.video.i_height =
963 p_text->fmt_out.video.i_visible_height = 32;
965 p_text->pf_sub_buffer_new = spu_new_buffer;
966 p_text->pf_sub_buffer_del = spu_del_buffer;
968 vlc_object_attach( p_text, p_spu );
970 /* FIXME TOCHECK shouldn't module_need( , , psz_modulename, false ) do the
971 * same than these 2 calls ? */
972 char *psz_modulename = var_CreateGetString( p_spu, "text-renderer" );
973 if( psz_modulename && *psz_modulename )
975 p_text->p_module = module_need( p_text, "text renderer",
976 psz_modulename, true );
978 free( psz_modulename );
980 if( !p_text->p_module )
981 p_text->p_module = module_need( p_text, "text renderer", NULL, false );
983 /* Create a few variables used for enhanced text rendering */
984 var_Create( p_text, "spu-duration", VLC_VAR_TIME );
985 var_Create( p_text, "spu-elapsed", VLC_VAR_TIME );
986 var_Create( p_text, "text-rerender", VLC_VAR_BOOL );
987 var_Create( p_text, "scale", VLC_VAR_INTEGER );
990 static filter_t *CreateAndLoadScale( vlc_object_t *p_obj,
991 vlc_fourcc_t i_src_chroma, vlc_fourcc_t i_dst_chroma,
996 p_scale = vlc_custom_create( p_obj, sizeof(filter_t),
997 VLC_OBJECT_GENERIC, "scale" );
1001 es_format_Init( &p_scale->fmt_in, VIDEO_ES, 0 );
1002 p_scale->fmt_in.video.i_chroma = i_src_chroma;
1003 p_scale->fmt_in.video.i_width =
1004 p_scale->fmt_in.video.i_height = 32;
1006 es_format_Init( &p_scale->fmt_out, VIDEO_ES, 0 );
1007 p_scale->fmt_out.video.i_chroma = i_dst_chroma;
1008 p_scale->fmt_out.video.i_width =
1009 p_scale->fmt_out.video.i_height = b_resize ? 16 : 32;
1011 p_scale->pf_vout_buffer_new = spu_new_video_buffer;
1012 p_scale->pf_vout_buffer_del = spu_del_video_buffer;
1014 vlc_object_attach( p_scale, p_obj );
1015 p_scale->p_module = module_need( p_scale, "video filter2", 0, 0 );
1019 static void SpuRenderCreateAndLoadScale( spu_t *p_spu )
1021 assert( !p_spu->p->p_scale );
1022 assert( !p_spu->p->p_scale_yuvp );
1023 /* XXX p_spu->p_scale is used for all conversion/scaling except yuvp to
1025 p_spu->p->p_scale = CreateAndLoadScale( VLC_OBJECT(p_spu),
1026 VLC_FOURCC_YUVA, VLC_FOURCC_YUVA, true );
1027 /* This one is used for YUVP to YUVA/RGBA without scaling
1028 * FIXME rename it */
1029 p_spu->p->p_scale_yuvp = CreateAndLoadScale( VLC_OBJECT(p_spu),
1030 VLC_FOURCC_YUVP, VLC_FOURCC_YUVA, false );
1033 static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
1034 subpicture_t *p_subpic, subpicture_region_t *p_region,
1035 int i_min_scale_ratio )
1037 filter_t *p_text = p_spu->p->p_text;
1039 assert( p_region->fmt.i_chroma == VLC_FOURCC_TEXT );
1041 if( !p_text || !p_text->p_module )
1044 /* Setup 3 variables which can be used to render
1045 * time-dependent text (and effects). The first indicates
1046 * the total amount of time the text will be on screen,
1047 * the second the amount of time it has already been on
1048 * screen (can be a negative value as text is layed out
1049 * before it is rendered) and the third is a feedback
1050 * variable from the renderer - if the renderer sets it
1051 * then this particular text is time-dependent, eg. the
1052 * visual progress bar inside the text in karaoke and the
1053 * text needs to be rendered multiple times in order for
1054 * the effect to work - we therefore need to return the
1055 * region to its original state at the end of the loop,
1056 * instead of leaving it in YUVA or YUVP.
1057 * Any renderer which is unaware of how to render
1058 * time-dependent text can happily ignore the variables
1059 * and render the text the same as usual - it should at
1060 * least show up on screen, but the effect won't change
1061 * the text over time.
1063 var_SetTime( p_text, "spu-duration", p_subpic->i_stop - p_subpic->i_start );
1064 var_SetTime( p_text, "spu-elapsed", mdate() - p_subpic->i_start );
1065 var_SetBool( p_text, "text-rerender", false );
1066 var_SetInteger( p_text, "scale", i_min_scale_ratio );
1068 if( p_text->pf_render_html && p_region->psz_html )
1070 p_text->pf_render_html( p_text, p_region, p_region );
1072 else if( p_text->pf_render_text )
1074 p_text->pf_render_text( p_text, p_region, p_region );
1076 *pb_rerender_text = var_GetBool( p_text, "text-rerender" );
1079 p_region->i_align |= SUBPICTURE_RENDERED;
1083 * A few scale functions helpers.
1085 static spu_scale_t spu_scale_create( int w, int h )
1087 spu_scale_t s = { .w = w, .h = h };
1094 static spu_scale_t spu_scale_unit( void )
1096 return spu_scale_create( SCALE_UNIT, SCALE_UNIT );
1098 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd )
1100 return spu_scale_create( wn * SCALE_UNIT / wd,
1101 hn * SCALE_UNIT / hd );
1103 static int spu_scale_w( int v, const spu_scale_t s )
1105 return v * s.w / SCALE_UNIT;
1107 static int spu_scale_h( int v, const spu_scale_t s )
1109 return v * s.h / SCALE_UNIT;
1111 static int spu_invscale_w( int v, const spu_scale_t s )
1113 return v * SCALE_UNIT / s.w;
1115 static int spu_invscale_h( int v, const spu_scale_t s )
1117 return v * SCALE_UNIT / s.h;
1121 * A few area functions helpers
1123 static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t s )
1125 spu_area_t a = { .i_x = x, .i_y = y, .i_width = w, .i_height = h, .scale = s };
1128 static spu_area_t spu_area_scaled( spu_area_t a )
1130 if( a.scale.w == SCALE_UNIT && a.scale.h == SCALE_UNIT )
1133 a.i_x = spu_scale_w( a.i_x, a.scale );
1134 a.i_y = spu_scale_h( a.i_y, a.scale );
1136 a.i_width = spu_scale_w( a.i_width, a.scale );
1137 a.i_height = spu_scale_h( a.i_height, a.scale );
1139 a.scale = spu_scale_unit();
1142 static spu_area_t spu_area_unscaled( spu_area_t a, spu_scale_t s )
1144 if( a.scale.w == s.w && a.scale.h == s.h )
1147 a = spu_area_scaled( a );
1149 a.i_x = spu_invscale_w( a.i_x, s );
1150 a.i_y = spu_invscale_h( a.i_y, s );
1152 a.i_width = spu_invscale_w( a.i_width, s );
1153 a.i_height = spu_invscale_h( a.i_height, s );
1158 static bool spu_area_overlap( spu_area_t a, spu_area_t b )
1163 a = spu_area_scaled( a );
1164 b = spu_area_scaled( b );
1166 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 ) &&
1167 __MAX( a.i_y-i_dy, b.i_y ) < __MIN( a.i_y+a.i_height+i_dy, b.i_y+b.i_height );
1171 * Avoid area overlapping
1173 static void SpuAreaFixOverlap( spu_area_t *p_dst,
1174 const spu_area_t *p_master,
1175 const spu_area_t *p_sub, int i_sub, int i_align )
1177 spu_area_t a = spu_area_scaled( *p_dst );
1178 bool b_moved = false;
1181 assert( p_master->i_x == 0 && p_master->i_y == 0 );
1183 /* Check for overlap
1184 * XXX It is not fast O(n^2) but we should not have a lot of region */
1188 for( int i = 0; i < i_sub; i++ )
1190 spu_area_t sub = spu_area_scaled( p_sub[i] );
1192 if( !spu_area_overlap( a, sub ) )
1195 if( i_align & SUBPICTURE_ALIGN_TOP )
1198 int i_y = sub.i_y + sub.i_height;
1199 if( i_y + a.i_height > p_master->i_height )
1204 else if( i_align & SUBPICTURE_ALIGN_BOTTOM )
1207 int i_y = sub.i_y - a.i_height;
1215 /* TODO what to do in this case? */
1216 //fprintf( stderr, "Overlap with unsupported alignment\n" );
1226 *p_dst = spu_area_unscaled( a, p_dst->scale );
1233 static void SpuRegionPlace( int *pi_x, int *pi_y,
1234 const subpicture_t *p_subpic,
1235 const subpicture_region_t *p_region,
1238 const int i_delta_x = p_region->i_x;
1239 const int i_delta_y = p_region->i_y;
1242 assert( p_region->i_x != INT_MAX && p_region->i_y != INT_MAX );
1243 if( p_region->i_align & SUBPICTURE_ALIGN_TOP )
1247 else if( p_region->i_align & SUBPICTURE_ALIGN_BOTTOM )
1249 i_y = p_subpic->i_original_picture_height - p_region->fmt.i_height - i_delta_y;
1253 i_y = p_subpic->i_original_picture_height / 2 - p_region->fmt.i_height / 2;
1256 if( p_region->i_align & SUBPICTURE_ALIGN_LEFT )
1260 else if( p_region->i_align & SUBPICTURE_ALIGN_RIGHT )
1262 i_x = p_subpic->i_original_picture_width - p_region->fmt.i_width - i_delta_x;
1266 i_x = p_subpic->i_original_picture_width / 2 - p_region->fmt.i_width / 2;
1269 if( p_subpic->b_absolute )
1275 /* Margin shifts all subpictures */
1276 if( i_margin_y != 0 )
1279 /* Clamp offset to not go out of the screen (when possible) */
1280 const int i_error_x = (i_x + p_region->fmt.i_width) - p_subpic->i_original_picture_width;
1286 const int i_error_y = (i_y + p_region->fmt.i_height) - p_subpic->i_original_picture_height;
1297 * This function computes the current alpha value for a given region.
1299 static int SpuRegionAlpha( subpicture_t *p_subpic, subpicture_region_t *p_region )
1301 /* Compute alpha blend value */
1302 int i_fade_alpha = 255;
1303 if( p_subpic->b_fade )
1305 mtime_t i_fade_start = ( p_subpic->i_stop +
1306 p_subpic->i_start ) / 2;
1307 mtime_t i_now = mdate();
1309 if( i_now >= i_fade_start && p_subpic->i_stop > i_fade_start )
1311 i_fade_alpha = 255 * ( p_subpic->i_stop - i_now ) /
1312 ( p_subpic->i_stop - i_fade_start );
1315 return i_fade_alpha * p_subpic->i_alpha * p_region->i_alpha / 65025;
1319 * It will render the provided region onto p_pic_dst.
1322 static void SpuRenderRegion( spu_t *p_spu,
1323 picture_t *p_pic_dst, spu_area_t *p_area,
1324 subpicture_t *p_subpic, subpicture_region_t *p_region,
1325 const spu_scale_t scale_size,
1326 const video_format_t *p_fmt,
1327 const spu_area_t *p_subtitle_area, int i_subtitle_area )
1329 spu_private_t *p_sys = p_spu->p;
1331 video_format_t fmt_original = p_region->fmt;
1332 bool b_rerender_text = false;
1333 bool b_restore_format = false;
1337 video_format_t region_fmt;
1338 picture_t *p_region_picture;
1340 /* Invalidate area by default */
1341 *p_area = spu_area_create( 0,0, 0,0, scale_size );
1343 /* Render text region */
1344 if( p_region->fmt.i_chroma == VLC_FOURCC_TEXT )
1346 const int i_min_scale_ratio = SCALE_UNIT; /* FIXME what is the right value? (scale_size is not) */
1347 SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region, i_min_scale_ratio );
1348 b_restore_format = b_rerender_text;
1350 /* Check if the rendering has failed ... */
1351 if( p_region->fmt.i_chroma == VLC_FOURCC_TEXT )
1355 /* Force palette if requested
1356 * FIXME b_force_palette and b_force_crop are applied to all subpictures using palette
1357 * instead of only the right one (being the dvd spu).
1359 const bool b_using_palette = p_region->fmt.i_chroma == VLC_FOURCC_YUVP;
1360 const bool b_force_palette = b_using_palette && p_sys->b_force_palette;
1361 const bool b_force_crop = b_force_palette && p_sys->b_force_crop;
1362 bool b_changed_palette = false;
1365 /* Compute the margin which is expressed in destination pixel unit
1366 * The margin is applied only to subtitle and when no forced crop is
1367 * requested (dvd menu) */
1369 if( !b_force_crop && p_subpic->b_subtitle )
1370 i_margin_y = spu_invscale_h( p_sys->i_margin, scale_size );
1372 /* Place the picture
1373 * We compute the position in the rendered size */
1374 SpuRegionPlace( &i_x_offset, &i_y_offset,
1375 p_subpic, p_region, i_margin_y );
1377 /* Save this position for subtitle overlap support
1378 * it is really important that there are given without scale_size applied */
1379 *p_area = spu_area_create( i_x_offset, i_y_offset,
1380 p_region->fmt.i_width, p_region->fmt.i_height,
1383 /* Handle overlapping subtitles when possible */
1384 if( p_subpic->b_subtitle && !p_subpic->b_absolute )
1386 spu_area_t display = spu_area_create( 0, 0, p_fmt->i_width, p_fmt->i_height,
1389 SpuAreaFixOverlap( p_area, &display, p_subtitle_area, i_subtitle_area,
1390 p_region->i_align );
1393 /* Fix the position for the current scale_size */
1394 i_x_offset = spu_scale_w( p_area->i_x, p_area->scale );
1395 i_y_offset = spu_scale_h( p_area->i_y, p_area->scale );
1398 if( b_force_palette )
1400 video_palette_t *p_palette = p_region->fmt.p_palette;
1401 video_palette_t palette;
1403 /* We suppose DVD palette here */
1404 palette.i_entries = 4;
1405 for( int i = 0; i < 4; i++ )
1406 for( int j = 0; j < 4; j++ )
1407 palette.palette[i][j] = p_sys->palette[i][j];
1409 if( p_palette->i_entries == palette.i_entries )
1411 for( int i = 0; i < p_palette->i_entries; i++ )
1412 for( int j = 0; j < 4; j++ )
1413 b_changed_palette |= p_palette->palette[i][j] != palette.palette[i][j];
1417 b_changed_palette = true;
1419 *p_palette = palette;
1423 region_fmt = p_region->fmt;
1424 p_region_picture = p_region->p_picture;
1427 /* Scale from rendered size to destination size */
1428 if( p_sys->p_scale && p_sys->p_scale->p_module &&
1429 ( !b_using_palette || ( p_sys->p_scale_yuvp && p_sys->p_scale_yuvp->p_module ) ) &&
1430 ( scale_size.w != SCALE_UNIT || scale_size.h != SCALE_UNIT || b_using_palette ) )
1432 const unsigned i_dst_width = spu_scale_w( p_region->fmt.i_width, scale_size );
1433 const unsigned i_dst_height = spu_scale_h( p_region->fmt.i_height, scale_size );
1435 /* Destroy the cache if unusable */
1436 if( p_region->p_private )
1438 subpicture_region_private_t *p_private = p_region->p_private;
1439 bool b_changed = false;
1441 /* Check resize changes */
1442 if( i_dst_width != p_private->fmt.i_width ||
1443 i_dst_height != p_private->fmt.i_height )
1446 /* Check forced palette changes */
1447 if( b_changed_palette )
1452 SpuRegionPrivateDelete( p_private );
1453 p_region->p_private = NULL;
1457 /* Scale if needed into cache */
1458 if( !p_region->p_private )
1460 filter_t *p_scale = p_sys->p_scale;
1462 picture_t *p_picture = p_region->p_picture;
1463 picture_Hold( p_picture );
1465 /* Convert YUVP to YUVA/RGBA first for better scaling quality */
1466 if( b_using_palette )
1468 filter_t *p_scale_yuvp = p_sys->p_scale_yuvp;
1470 p_scale_yuvp->fmt_in.video = p_region->fmt;
1472 /* TODO converting to RGBA for RGB video output is better */
1473 p_scale_yuvp->fmt_out.video = p_region->fmt;
1474 p_scale_yuvp->fmt_out.video.i_chroma = VLC_FOURCC_YUVA;
1476 p_picture = p_scale_yuvp->pf_video_filter( p_scale_yuvp, p_picture );
1479 /* Well we will try conversion+scaling */
1480 msg_Warn( p_spu, "%4.4s to %4.4s conversion failed",
1481 (const char*)&p_scale_yuvp->fmt_in.video.i_chroma,
1482 (const char*)&p_scale_yuvp->fmt_out.video.i_chroma );
1486 /* Conversion(except from YUVP)/Scaling */
1488 ( p_picture->format.i_width != i_dst_width ||
1489 p_picture->format.i_height != i_dst_height ) )
1491 p_scale->fmt_in.video = p_picture->format;
1492 p_scale->fmt_out.video = p_picture->format;
1494 p_scale->fmt_out.video.i_width = i_dst_width;
1495 p_scale->fmt_out.video.i_height = i_dst_height;
1497 p_scale->fmt_out.video.i_visible_width =
1498 spu_scale_w( p_region->fmt.i_visible_width, scale_size );
1499 p_scale->fmt_out.video.i_visible_height =
1500 spu_scale_h( p_region->fmt.i_visible_height, scale_size );
1502 p_picture = p_scale->pf_video_filter( p_scale, p_picture );
1504 msg_Err( p_spu, "scaling failed" );
1510 p_region->p_private = SpuRegionPrivateNew( &p_picture->format );
1511 if( p_region->p_private )
1513 p_region->p_private->p_picture = p_picture;
1514 if( !p_region->p_private->p_picture )
1516 SpuRegionPrivateDelete( p_region->p_private );
1517 p_region->p_private = NULL;
1522 picture_Release( p_picture );
1527 /* And use the scaled picture */
1528 if( p_region->p_private )
1530 region_fmt = p_region->p_private->fmt;
1531 p_region_picture = p_region->p_private->p_picture;
1535 /* Force cropping if requested */
1538 int i_crop_x = spu_scale_w( p_sys->i_crop_x, scale_size );
1539 int i_crop_y = spu_scale_h( p_sys->i_crop_y, scale_size );
1540 int i_crop_width = spu_scale_w( p_sys->i_crop_width, scale_size );
1541 int i_crop_height= spu_scale_h( p_sys->i_crop_height,scale_size );
1543 /* Find the intersection */
1544 if( i_crop_x + i_crop_width <= i_x_offset ||
1545 i_x_offset + (int)region_fmt.i_visible_width < i_crop_x ||
1546 i_crop_y + i_crop_height <= i_y_offset ||
1547 i_y_offset + (int)region_fmt.i_visible_height < i_crop_y )
1549 /* No intersection */
1550 region_fmt.i_visible_width =
1551 region_fmt.i_visible_height = 0;
1555 int i_x, i_y, i_x_end, i_y_end;
1556 i_x = __MAX( i_crop_x, i_x_offset );
1557 i_y = __MAX( i_crop_y, i_y_offset );
1558 i_x_end = __MIN( i_crop_x + i_crop_width,
1559 i_x_offset + (int)region_fmt.i_visible_width );
1560 i_y_end = __MIN( i_crop_y + i_crop_height,
1561 i_y_offset + (int)region_fmt.i_visible_height );
1563 region_fmt.i_x_offset = i_x - i_x_offset;
1564 region_fmt.i_y_offset = i_y - i_y_offset;
1565 region_fmt.i_visible_width = i_x_end - i_x;
1566 region_fmt.i_visible_height = i_y_end - i_y;
1568 i_x_offset = __MAX( i_x, 0 );
1569 i_y_offset = __MAX( i_y, 0 );
1573 /* Update the blender */
1574 SpuRenderUpdateBlend( p_spu, p_fmt->i_width, p_fmt->i_height, ®ion_fmt );
1576 if( p_sys->p_blend->p_module )
1578 const int i_alpha = SpuRegionAlpha( p_subpic, p_region );
1580 p_sys->p_blend->pf_video_blend( p_sys->p_blend, p_pic_dst,
1581 p_region_picture, i_x_offset, i_y_offset, i_alpha );
1585 msg_Err( p_spu, "blending %4.4s to %4.4s failed",
1586 (char *)&p_sys->p_blend->fmt_out.video.i_chroma,
1587 (char *)&p_sys->p_blend->fmt_out.video.i_chroma );
1591 if( b_rerender_text )
1593 /* Some forms of subtitles need to be re-rendered more than
1594 * once, eg. karaoke. We therefore restore the region to its
1595 * pre-rendered state, so the next time through everything is
1598 picture_Release( p_region->p_picture );
1599 p_region->p_picture = NULL;
1600 if( p_region->p_private )
1602 SpuRegionPrivateDelete( p_region->p_private );
1603 p_region->p_private = NULL;
1605 p_region->i_align &= ~SUBPICTURE_RENDERED;
1607 if( b_restore_format )
1608 p_region->fmt = fmt_original;
1612 * This function compares two 64 bits integers.
1613 * It can be used by qsort.
1615 static int IntegerCmp( int64_t i0, int64_t i1 )
1617 return i0 < i1 ? -1 : i0 > i1 ? 1 : 0;
1620 * This function compares 2 subpictures using the following properties
1621 * (ordered by priority)
1622 * 1. absolute positionning
1624 * 3. creation order (per channel)
1626 * It can be used by qsort.
1628 * XXX spu_RenderSubpictures depends heavily on this order.
1630 static int SubpictureCmp( const void *s0, const void *s1 )
1632 subpicture_t *p_subpic0 = *(subpicture_t**)s0;
1633 subpicture_t *p_subpic1 = *(subpicture_t**)s1;
1636 r = IntegerCmp( !p_subpic0->b_absolute, !p_subpic1->b_absolute );
1638 r = IntegerCmp( p_subpic0->i_start, p_subpic1->i_start );
1640 r = IntegerCmp( p_subpic0->i_channel, p_subpic1->i_channel );
1642 r = IntegerCmp( p_subpic0->i_order, p_subpic1->i_order );
1646 /*****************************************************************************
1647 * SpuClearChannel: clear an spu channel
1648 *****************************************************************************
1649 * This function destroys the subpictures which belong to the spu channel
1650 * corresponding to i_channel_id.
1651 *****************************************************************************/
1652 static void SpuClearChannel( spu_t *p_spu, int i_channel, bool b_locked )
1654 spu_private_t *p_sys = p_spu->p;
1655 int i_subpic; /* subpicture index */
1658 vlc_mutex_lock( &p_sys->lock );
1660 vlc_assert_locked( &p_sys->lock );
1662 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
1664 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_subpic];
1665 subpicture_t *p_subpic = p_entry->p_subpicture;
1667 if( !p_subpic || p_subpic->i_channel != i_channel )
1670 /* You cannot delete subpicture outside of spu_SortSubpictures */
1671 p_entry->b_reject = true;
1675 vlc_mutex_unlock( &p_sys->lock );
1678 /*****************************************************************************
1679 * spu_ControlDefault: default methods for the subpicture unit control.
1680 *****************************************************************************/
1681 static int SpuControl( spu_t *p_spu, int i_query, va_list args )
1683 spu_private_t *p_sys = p_spu->p;
1688 case SPU_CHANNEL_REGISTER:
1689 pi = (int *)va_arg( args, int * );
1690 vlc_mutex_lock( &p_sys->lock );
1692 *pi = p_sys->i_channel++;
1693 vlc_mutex_unlock( &p_sys->lock );
1696 case SPU_CHANNEL_CLEAR:
1697 i = (int)va_arg( args, int );
1698 SpuClearChannel( p_spu, i, false );
1702 msg_Dbg( p_spu, "control query not supported" );
1703 return VLC_EGENERIC;
1709 /*****************************************************************************
1710 * Object variables callbacks
1711 *****************************************************************************/
1713 /*****************************************************************************
1714 * UpdateSPU: update subpicture settings
1715 *****************************************************************************
1716 * This function is called from CropCallback and at initialization time, to
1717 * retrieve crop information from the input.
1718 *****************************************************************************/
1719 static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
1721 spu_private_t *p_sys = p_spu->p;
1724 vlc_mutex_lock( &p_sys->lock );
1726 p_sys->b_force_palette = false;
1727 p_sys->b_force_crop = false;
1729 if( var_Get( p_object, "highlight", &val ) || !val.b_bool )
1731 vlc_mutex_unlock( &p_sys->lock );
1735 p_sys->b_force_crop = true;
1736 p_sys->i_crop_x = var_GetInteger( p_object, "x-start" );
1737 p_sys->i_crop_y = var_GetInteger( p_object, "y-start" );
1738 p_sys->i_crop_width = var_GetInteger( p_object, "x-end" ) - p_sys->i_crop_x;
1739 p_sys->i_crop_height = var_GetInteger( p_object, "y-end" ) - p_sys->i_crop_y;
1741 if( var_Get( p_object, "menu-palette", &val ) == VLC_SUCCESS )
1743 memcpy( p_sys->palette, val.p_address, 16 );
1744 p_sys->b_force_palette = true;
1746 vlc_mutex_unlock( &p_sys->lock );
1748 msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
1749 p_sys->i_crop_x, p_sys->i_crop_y,
1750 p_sys->i_crop_width, p_sys->i_crop_height,
1751 p_sys->b_force_palette );
1754 /*****************************************************************************
1755 * CropCallback: called when the highlight properties are changed
1756 *****************************************************************************
1757 * This callback is called from the input thread when we need cropping
1758 *****************************************************************************/
1759 static int CropCallback( vlc_object_t *p_object, char const *psz_var,
1760 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1762 VLC_UNUSED(oldval); VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1764 UpdateSPU( (spu_t *)p_data, p_object );
1768 /*****************************************************************************
1769 * Buffers allocation callbacks for the filters
1770 *****************************************************************************/
1771 struct filter_owner_sys_t
1777 static subpicture_t *sub_new_buffer( filter_t *p_filter )
1779 filter_owner_sys_t *p_sys = p_filter->p_owner;
1781 subpicture_t *p_subpicture = subpicture_New();
1783 p_subpicture->i_channel = p_sys->i_channel;
1784 return p_subpicture;
1786 static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1788 VLC_UNUSED( p_filter );
1789 subpicture_Delete( p_subpic );
1792 static subpicture_t *spu_new_buffer( filter_t *p_filter )
1794 VLC_UNUSED(p_filter);
1795 return subpicture_New();
1797 static void spu_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1799 VLC_UNUSED(p_filter);
1800 subpicture_Delete( p_subpic );
1803 static picture_t *spu_new_video_buffer( filter_t *p_filter )
1805 const video_format_t *p_fmt = &p_filter->fmt_out.video;
1807 VLC_UNUSED(p_filter);
1808 return picture_New( p_fmt->i_chroma,
1809 p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
1811 static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_picture )
1813 VLC_UNUSED(p_filter);
1814 picture_Release( p_picture );
1817 static int SubFilterAllocationInit( filter_t *p_filter, void *p_data )
1819 spu_t *p_spu = p_data;
1821 filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
1823 return VLC_EGENERIC;
1825 p_filter->pf_sub_buffer_new = sub_new_buffer;
1826 p_filter->pf_sub_buffer_del = sub_del_buffer;
1828 p_filter->p_owner = p_sys;
1829 spu_Control( p_spu, SPU_CHANNEL_REGISTER, &p_sys->i_channel );
1830 p_sys->p_spu = p_spu;
1835 static void SubFilterAllocationClean( filter_t *p_filter )
1837 filter_owner_sys_t *p_sys = p_filter->p_owner;
1839 SpuClearChannel( p_sys->p_spu, p_sys->i_channel, true );
1840 free( p_filter->p_owner );
1843 static int SubFilterCallback( vlc_object_t *p_object, char const *psz_var,
1844 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1846 spu_t *p_spu = p_data;
1847 spu_private_t *p_sys = p_spu->p;
1849 VLC_UNUSED(p_object); VLC_UNUSED(oldval);
1850 VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1852 vlc_mutex_lock( &p_sys->lock );
1853 filter_chain_Reset( p_sys->p_chain, NULL, NULL );
1854 spu_ParseChain( p_spu );
1855 vlc_mutex_unlock( &p_sys->lock );