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;
95 mtime_t i_last_render_date;
99 struct subpicture_region_private_t
102 picture_t *p_picture;
104 static subpicture_region_private_t *SpuRegionPrivateNew( video_format_t * );
105 static void SpuRegionPrivateDelete( subpicture_region_private_t * );
113 static spu_scale_t spu_scale_create( int w, int h );
114 static spu_scale_t spu_scale_unit(void );
115 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd );
116 static int spu_scale_w( int v, const spu_scale_t s );
117 static int spu_scale_h( int v, const spu_scale_t s );
118 static int spu_invscale_w( int v, const spu_scale_t s );
119 static int spu_invscale_h( int v, const spu_scale_t s );
131 static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t );
132 static spu_area_t spu_area_scaled( spu_area_t );
133 static spu_area_t spu_area_unscaled( spu_area_t, spu_scale_t );
134 static bool spu_area_overlap( spu_area_t, spu_area_t );
137 /* Subpicture rendered flag
138 * FIXME ? it could be moved to private ? */
139 #define SUBPICTURE_RENDERED (0x1000)
140 #if SUBPICTURE_RENDERED < SUBPICTURE_ALIGN_MASK
141 # error SUBPICTURE_RENDERED too low
144 #define SCALE_UNIT (1000)
146 static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic );
147 static int SubpictureCmp( const void *s0, const void *s1 );
149 static void SpuRenderRegion( spu_t *,
150 picture_t *p_pic_dst, spu_area_t *,
151 subpicture_t *, subpicture_region_t *,
152 const spu_scale_t scale_size,
153 const video_format_t *p_fmt,
154 const spu_area_t *p_subtitle_area, int i_subtitle_area );
156 static void UpdateSPU ( spu_t *, vlc_object_t * );
157 static int CropCallback( vlc_object_t *, char const *,
158 vlc_value_t, vlc_value_t, void * );
160 static int SpuControl( spu_t *, int, va_list );
162 static void SpuClearChannel( spu_t *p_spu, int i_channel, bool b_locked );
164 /* Buffer allocation for SPU filter (blend, scale, ...) */
165 static subpicture_t *spu_new_buffer( filter_t * );
166 static void spu_del_buffer( filter_t *, subpicture_t * );
167 static picture_t *spu_new_video_buffer( filter_t * );
168 static void spu_del_video_buffer( filter_t *, picture_t * );
170 static int spu_ParseChain( spu_t * );
172 /* Buffer aloccation fir SUB filter */
173 static int SubFilterCallback( vlc_object_t *, char const *,
174 vlc_value_t, vlc_value_t, void * );
176 static int SubFilterAllocationInit( filter_t *, void * );
177 static void SubFilterAllocationClean( filter_t * );
180 static void SpuRenderCreateAndLoadText( spu_t * );
181 static void SpuRenderCreateAndLoadScale( spu_t * );
182 static void SpuRenderCreateBlend( spu_t *, vlc_fourcc_t i_chroma, int i_aspect );
183 static void FilterRelease( filter_t *p_filter );
185 /*****************************************************************************
187 *****************************************************************************/
189 * Creates the subpicture unit
191 * \param p_this the parent object which creates the subpicture unit
193 spu_t *__spu_Create( vlc_object_t *p_this )
196 spu_private_t *p_sys;
198 p_spu = vlc_custom_create( p_this, sizeof(spu_t) + sizeof(spu_private_t),
199 VLC_OBJECT_GENERIC, "subpicture" );
204 /* Initialize spu fields */
205 p_spu->pf_control = SpuControl;
206 p_spu->p = p_sys = (spu_private_t*)&p_spu[1];
208 /* Initialize private fields */
209 vlc_mutex_init( &p_sys->lock );
211 SpuHeapInit( &p_sys->heap );
213 p_sys->p_blend = NULL;
214 p_sys->p_text = NULL;
215 p_sys->p_scale = NULL;
216 p_sys->p_scale_yuvp = NULL;
218 /* Register the default subpicture channel */
219 p_sys->i_channel = 2;
221 vlc_object_attach( p_spu, p_this );
223 p_sys->p_chain = filter_chain_New( p_spu, "sub filter", false,
224 SubFilterAllocationInit,
225 SubFilterAllocationClean,
228 /* Load text and scale module */
229 SpuRenderCreateAndLoadText( p_spu );
230 SpuRenderCreateAndLoadScale( p_spu );
233 p_sys->i_last_sort_date = -1;
234 p_sys->i_last_render_date = -1;
240 * Initialise the subpicture unit
242 * \param p_spu the subpicture unit object
244 int spu_Init( spu_t *p_spu )
246 spu_private_t *p_sys = p_spu->p;
248 /* If the user requested a sub margin, we force the position. */
249 p_sys->i_margin = var_CreateGetInteger( p_spu, "sub-margin" );
251 var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
252 var_AddCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
254 spu_ParseChain( p_spu );
259 int spu_ParseChain( spu_t *p_spu )
261 char *psz_parser = var_GetString( p_spu, "sub-filter" );
267 i_ret = filter_chain_AppendFromString( p_spu->p->p_chain, psz_parser );
275 * Destroy the subpicture unit
277 * \param p_this the parent object which destroys the subpicture unit
279 void spu_Destroy( spu_t *p_spu )
281 spu_private_t *p_sys = p_spu->p;
284 FilterRelease( p_sys->p_blend );
287 FilterRelease( p_sys->p_text );
289 if( p_sys->p_scale_yuvp )
290 FilterRelease( p_sys->p_scale_yuvp );
293 FilterRelease( p_sys->p_scale );
295 filter_chain_Delete( p_sys->p_chain );
297 /* Destroy all remaining subpictures */
298 SpuHeapClean( &p_sys->heap );
300 vlc_mutex_destroy( &p_sys->lock );
302 vlc_object_release( p_spu );
306 * Attach/Detach the SPU from any input
308 * \param p_this the object in which to destroy the subpicture unit
309 * \param b_attach to select attach or detach
311 void spu_Attach( spu_t *p_spu, vlc_object_t *p_this, bool b_attach )
313 vlc_object_t *p_input;
315 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
316 if( !p_input ) return;
320 UpdateSPU( p_spu, VLC_OBJECT(p_input) );
321 var_AddCallback( p_input, "highlight", CropCallback, p_spu );
322 vlc_object_release( p_input );
326 /* Delete callback */
327 var_DelCallback( p_input, "highlight", CropCallback, p_spu );
328 vlc_object_release( p_input );
333 * Display a subpicture
335 * Remove the reservation flag of a subpicture, which will cause it to be
337 * \param p_spu the subpicture unit object
338 * \param p_subpic the subpicture to display
340 void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
342 spu_private_t *p_sys = p_spu->p;
344 /* DEFAULT_CHAN always reset itself */
345 if( p_subpic->i_channel == DEFAULT_CHAN )
346 SpuClearChannel( p_spu, DEFAULT_CHAN, false );
348 /* p_private is for spu only and cannot be non NULL here */
349 for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
350 assert( r->p_private == NULL );
353 vlc_mutex_lock( &p_sys->lock );
354 if( SpuHeapPush( &p_sys->heap, p_subpic ) )
356 vlc_mutex_unlock( &p_sys->lock );
357 msg_Err( p_spu, "subpicture heap full" );
358 subpicture_Delete( p_subpic );
361 vlc_mutex_unlock( &p_sys->lock );
365 * This function renders all sub picture units in the list.
367 void spu_RenderSubpictures( spu_t *p_spu,
368 picture_t *p_pic_dst, const video_format_t *p_fmt_dst,
369 subpicture_t *p_subpic_list,
370 const video_format_t *p_fmt_src, bool b_paused )
372 spu_private_t *p_sys = p_spu->p;
374 const int i_source_video_width = p_fmt_src->i_width;
375 const int i_source_video_height = p_fmt_src->i_height;
376 const mtime_t i_current_date = mdate();
378 unsigned int i_subpicture;
379 subpicture_t *pp_subpicture[VOUT_MAX_SUBPICTURES];
381 unsigned int i_subtitle_region_count;
382 spu_area_t p_subtitle_area_buffer[VOUT_MAX_SUBPICTURES];
383 spu_area_t *p_subtitle_area;
386 vlc_mutex_lock( &p_sys->lock );
388 /* Preprocess subpictures */
390 i_subtitle_region_count = 0;
391 for( subpicture_t * p_subpic = p_subpic_list;
393 p_subpic = p_subpic->p_next )
396 if( !b_paused && p_subpic->pf_pre_render )
397 p_subpic->pf_pre_render( p_spu, p_subpic, p_fmt_dst );
399 if( !b_paused && p_subpic->pf_update_regions )
401 mtime_t i_render_date;
402 video_format_t fmt_org = *p_fmt_dst;
404 fmt_org.i_visible_width = i_source_video_width;
406 fmt_org.i_visible_height = i_source_video_height;
408 i_render_date = i_current_date;
409 if( p_subpic->b_subtitle && b_paused && p_sys->i_last_render_date > 0 )
410 i_render_date = p_sys->i_last_render_date;
412 p_subpic->pf_update_regions( p_spu, p_subpic, &fmt_org, i_render_date );
416 if( p_subpic->b_subtitle )
418 for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
419 i_subtitle_region_count++;
423 pp_subpicture[i_subpicture++] = p_subpic;
427 p_sys->i_last_render_date = i_current_date;
429 /* Be sure we have at least 1 picture to process */
430 if( i_subpicture <= 0 )
432 vlc_mutex_unlock( &p_sys->lock );
436 /* Now order subpicture array
437 * XXX The order is *really* important for overlap subtitles positionning */
438 qsort( pp_subpicture, i_subpicture, sizeof(*pp_subpicture), SubpictureCmp );
440 /* Allocate area array for subtitle overlap */
442 p_subtitle_area = p_subtitle_area_buffer;
443 if( i_subtitle_region_count > sizeof(p_subtitle_area_buffer)/sizeof(*p_subtitle_area_buffer) )
444 p_subtitle_area = calloc( i_subtitle_region_count, sizeof(*p_subtitle_area) );
446 /* Create the blending module */
447 if( !p_sys->p_blend )
448 SpuRenderCreateBlend( p_spu, p_fmt_dst->i_chroma, p_fmt_dst->i_aspect );
450 /* Process all subpictures and regions (in the right order) */
451 for( unsigned int i_index = 0; i_index < i_subpicture; i_index++ )
453 subpicture_t *p_subpic = pp_subpicture[i_index];
454 subpicture_region_t *p_region;
456 if( !p_subpic->p_region )
459 /* FIXME when possible use a better rendering size than source size
460 * (max of display size and source size for example) FIXME */
461 int i_render_width = p_subpic->i_original_picture_width;
462 int i_render_height = p_subpic->i_original_picture_height;
463 if( !i_render_width || !i_render_height )
465 if( i_render_width != 0 || i_render_height != 0 )
466 msg_Err( p_spu, "unsupported original picture size %dx%d",
467 i_render_width, i_render_height );
469 p_subpic->i_original_picture_width = i_render_width = i_source_video_width;
470 p_subpic->i_original_picture_height = i_render_height = i_source_video_height;
475 p_sys->p_text->fmt_out.video.i_width =
476 p_sys->p_text->fmt_out.video.i_visible_width = i_render_width;
478 p_sys->p_text->fmt_out.video.i_height =
479 p_sys->p_text->fmt_out.video.i_visible_height = i_render_height;
482 /* Compute scaling from picture to source size */
483 spu_scale_t scale = spu_scale_createq( i_source_video_width, i_render_width,
484 i_source_video_height, i_render_height );
486 /* Update scaling from source size to display size(p_fmt_dst) */
487 scale.w = scale.w * p_fmt_dst->i_width / i_source_video_width;
488 scale.h = scale.h * p_fmt_dst->i_height / i_source_video_height;
490 /* Set default subpicture aspect ratio
491 * FIXME if we only handle 1 aspect ratio per picture, why is it set per
493 p_region = p_subpic->p_region;
494 if( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den )
496 if( p_region->fmt.i_aspect != 0 )
498 p_region->fmt.i_sar_den = p_region->fmt.i_aspect;
499 p_region->fmt.i_sar_num = VOUT_ASPECT_FACTOR;
503 p_region->fmt.i_sar_den = p_fmt_dst->i_sar_den;
504 p_region->fmt.i_sar_num = p_fmt_dst->i_sar_num;
508 /* Take care of the aspect ratio */
509 if( p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den !=
510 p_region->fmt.i_sar_den * p_fmt_dst->i_sar_num )
512 /* FIXME FIXME what about region->i_x/i_y ? */
514 (int64_t)p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den /
515 p_region->fmt.i_sar_den / p_fmt_dst->i_sar_num;
518 /* Render all regions
519 * We always transform non absolute subtitle into absolute one on the
520 * first rendering to allow good subtitle overlap support.
522 for( p_region = p_subpic->p_region; p_region != NULL; p_region = p_region->p_next )
526 /* Check scale validity */
527 if( scale.w <= 0 || scale.h <= 0 )
531 SpuRenderRegion( p_spu, p_pic_dst, &area,
532 p_subpic, p_region, scale, p_fmt_dst,
533 p_subtitle_area, i_subtitle_area );
535 if( p_subpic->b_subtitle )
537 area = spu_area_unscaled( area, scale );
538 if( !p_subpic->b_absolute && area.i_width > 0 && area.i_height > 0 )
540 p_region->i_x = area.i_x;
541 p_region->i_y = area.i_y;
543 if( p_subtitle_area )
544 p_subtitle_area[i_subtitle_area++] = area;
547 if( p_subpic->b_subtitle )
548 p_subpic->b_absolute = true;
552 if( p_subtitle_area != p_subtitle_area_buffer )
553 free( p_subtitle_area );
555 vlc_mutex_unlock( &p_sys->lock );
558 /*****************************************************************************
559 * spu_SortSubpictures: find the subpictures to display
560 *****************************************************************************
561 * This function parses all subpictures and decides which ones need to be
562 * displayed. If no picture has been selected, display_date will depend on
564 * We also check for ephemer DVD subpictures (subpictures that have
565 * to be removed if a newer one is available), which makes it a lot
566 * more difficult to guess if a subpicture has to be rendered or not.
567 *****************************************************************************/
568 subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t display_date,
569 bool b_paused, bool b_subtitle_only )
571 spu_private_t *p_sys = p_spu->p;
573 subpicture_t *p_subpic = NULL;
575 /* Run subpicture filters */
576 filter_chain_SubFilter( p_sys->p_chain, display_date );
578 vlc_mutex_lock( &p_sys->lock );
580 /* We get an easily parsable chained list of subpictures which
581 * ends with NULL since p_subpic was initialized to NULL. */
582 for( i_channel = 0; i_channel < p_sys->i_channel; i_channel++ )
584 subpicture_t *p_available_subpic[VOUT_MAX_SUBPICTURES];
585 bool pb_available_late[VOUT_MAX_SUBPICTURES];
588 mtime_t start_date = display_date;
589 mtime_t ephemer_date = 0;
592 /* Select available pictures */
593 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
595 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_index];
596 subpicture_t *p_current = p_entry->p_subpicture;
600 if( !p_current || p_entry->b_reject )
602 if( p_entry->b_reject )
603 SpuHeapDeleteAt( &p_sys->heap, i_index );
607 if( p_current->i_channel != i_channel ||
608 ( b_subtitle_only && !p_current->b_subtitle ) )
613 display_date < p_current->i_start )
615 /* Too early, come back next monday */
619 if( p_current->i_start > ephemer_date )
620 ephemer_date = p_current->i_start;
622 b_stop_valid = ( !p_current->b_ephemer || p_current->i_stop > p_current->i_start ) &&
623 ( !p_current->b_subtitle || !b_paused ); /* XXX Assume that subtitle are pausable */
625 b_late = b_stop_valid && p_current->i_stop <= display_date;
627 /* start_date will be used for correct automatic overlap support
628 * in case picture that should not be displayed anymore (display_time)
629 * overlap with a picture to be displayed (p_current->i_start) */
630 if( !b_late && !p_current->b_ephemer )
631 start_date = p_current->i_start;
634 p_available_subpic[i_available] = p_current;
635 pb_available_late[i_available] = b_late;
639 /* Only forced old picture display at the transition */
640 if( start_date < p_sys->i_last_sort_date )
641 start_date = p_sys->i_last_sort_date;
642 if( start_date <= 0 )
643 start_date = INT64_MAX;
645 /* Select pictures to be displayed */
646 for( i_index = 0; i_index < i_available; i_index++ )
648 subpicture_t *p_current = p_available_subpic[i_index];
649 bool b_late = pb_available_late[i_index];
651 if( ( b_late && p_current->i_stop <= __MAX( start_date, p_sys->i_last_sort_date ) ) ||
652 ( p_current->b_ephemer && p_current->i_start < ephemer_date ) )
654 /* Destroy late and obsolete ephemer subpictures */
655 SpuHeapDeleteSubpicture( &p_sys->heap, p_current );
659 SubpictureChain( &p_subpic, p_current );
664 p_sys->i_last_sort_date = display_date;
665 vlc_mutex_unlock( &p_sys->lock );
670 void spu_OffsetSubtitleDate( spu_t *p_spu, mtime_t i_duration )
672 spu_private_t *p_sys = p_spu->p;
674 vlc_mutex_lock( &p_sys->lock );
675 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
677 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i];
678 subpicture_t *p_current = p_entry->p_subpicture;
680 if( p_current && p_current->b_subtitle )
682 if( p_current->i_start > 0 )
683 p_current->i_start += i_duration;
684 if( p_current->i_stop > 0 )
685 p_current->i_stop += i_duration;
688 vlc_mutex_unlock( &p_sys->lock );
691 /*****************************************************************************
692 * subpicture_t allocation
693 *****************************************************************************/
694 subpicture_t *subpicture_New( void )
696 subpicture_t *p_subpic = calloc( 1, sizeof(*p_subpic) );
700 p_subpic->i_order = 0;
701 p_subpic->b_absolute = true;
702 p_subpic->b_fade = false;
703 p_subpic->b_subtitle = false;
704 p_subpic->i_alpha = 0xFF;
705 p_subpic->p_region = NULL;
706 p_subpic->pf_render = NULL;
707 p_subpic->pf_destroy = NULL;
708 p_subpic->p_sys = NULL;
713 void subpicture_Delete( subpicture_t *p_subpic )
715 subpicture_region_ChainDelete( p_subpic->p_region );
716 p_subpic->p_region = NULL;
718 if( p_subpic->pf_destroy )
720 p_subpic->pf_destroy( p_subpic );
725 static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic )
727 p_subpic->p_next = *pp_head;
732 /*****************************************************************************
733 * subpicture_region_t allocation
734 *****************************************************************************/
735 subpicture_region_t *subpicture_region_New( const video_format_t *p_fmt )
737 subpicture_region_t *p_region = calloc( 1, sizeof(*p_region ) );
741 p_region->fmt = *p_fmt;
742 p_region->fmt.p_palette = NULL;
743 if( p_fmt->i_chroma == VLC_FOURCC_YUVP )
745 p_region->fmt.p_palette = calloc( 1, sizeof(*p_region->fmt.p_palette) );
746 if( p_fmt->p_palette )
747 *p_region->fmt.p_palette = *p_fmt->p_palette;
749 p_region->i_alpha = 0xff;
750 p_region->p_next = NULL;
751 p_region->p_private = NULL;
752 p_region->psz_text = NULL;
753 p_region->p_style = NULL;
754 p_region->p_picture = NULL;
756 if( p_fmt->i_chroma == VLC_FOURCC_TEXT )
759 p_region->p_picture = picture_New( p_fmt->i_chroma, p_fmt->i_width, p_fmt->i_height,
761 if( !p_region->p_picture )
763 free( p_fmt->p_palette );
772 void subpicture_region_Delete( subpicture_region_t *p_region )
777 if( p_region->p_private )
778 SpuRegionPrivateDelete( p_region->p_private );
780 if( p_region->p_picture )
781 picture_Release( p_region->p_picture );
783 free( p_region->fmt.p_palette );
785 free( p_region->psz_text );
786 free( p_region->psz_html );
787 //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
792 void subpicture_region_ChainDelete( subpicture_region_t *p_head )
796 subpicture_region_t *p_next = p_head->p_next;
798 subpicture_region_Delete( p_head );
806 /*****************************************************************************
808 *****************************************************************************/
809 static void SpuHeapInit( spu_heap_t *p_heap )
811 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
813 spu_heap_entry_t *e = &p_heap->p_entry[i];
815 e->p_subpicture = NULL;
820 static int SpuHeapPush( spu_heap_t *p_heap, subpicture_t *p_subpic )
822 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
824 spu_heap_entry_t *e = &p_heap->p_entry[i];
826 if( e->p_subpicture )
829 e->p_subpicture = p_subpic;
836 static void SpuHeapDeleteAt( spu_heap_t *p_heap, int i_index )
838 spu_heap_entry_t *e = &p_heap->p_entry[i_index];
840 if( e->p_subpicture )
841 subpicture_Delete( e->p_subpicture );
843 e->p_subpicture = NULL;
846 static int SpuHeapDeleteSubpicture( spu_heap_t *p_heap, subpicture_t *p_subpic )
848 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
850 spu_heap_entry_t *e = &p_heap->p_entry[i];
852 if( e->p_subpicture != p_subpic )
855 SpuHeapDeleteAt( p_heap, i );
861 static void SpuHeapClean( spu_heap_t *p_heap )
863 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
865 spu_heap_entry_t *e = &p_heap->p_entry[i];
866 if( e->p_subpicture )
867 subpicture_Delete( e->p_subpicture );
871 static subpicture_region_private_t *SpuRegionPrivateNew( video_format_t *p_fmt )
873 subpicture_region_private_t *p_private = malloc( sizeof(*p_private) );
878 p_private->fmt = *p_fmt;
879 if( p_fmt->p_palette )
881 p_private->fmt.p_palette = malloc( sizeof(*p_private->fmt.p_palette) );
882 if( p_private->fmt.p_palette )
883 *p_private->fmt.p_palette = *p_fmt->p_palette;
885 p_private->p_picture = NULL;
889 static void SpuRegionPrivateDelete( subpicture_region_private_t *p_private )
891 if( p_private->p_picture )
892 picture_Release( p_private->p_picture );
893 free( p_private->fmt.p_palette );
897 static void FilterRelease( filter_t *p_filter )
899 if( p_filter->p_module )
900 module_unneed( p_filter, p_filter->p_module );
902 vlc_object_detach( p_filter );
903 vlc_object_release( p_filter );
906 static void SpuRenderCreateBlend( spu_t *p_spu, vlc_fourcc_t i_chroma, int i_aspect )
910 assert( !p_spu->p->p_blend );
913 p_blend = vlc_custom_create( p_spu, sizeof(filter_t),
914 VLC_OBJECT_GENERIC, "blend" );
918 es_format_Init( &p_blend->fmt_in, VIDEO_ES, 0 );
920 es_format_Init( &p_blend->fmt_out, VIDEO_ES, 0 );
921 p_blend->fmt_out.video.i_x_offset = 0;
922 p_blend->fmt_out.video.i_y_offset = 0;
923 p_blend->fmt_out.video.i_chroma = i_chroma;
924 p_blend->fmt_out.video.i_aspect = i_aspect;
926 /* The blend module will be loaded when needed with the real
928 p_blend->p_module = NULL;
931 vlc_object_attach( p_blend, p_spu );
933 static void SpuRenderUpdateBlend( spu_t *p_spu, int i_out_width, int i_out_height,
934 const video_format_t *p_in_fmt )
936 filter_t *p_blend = p_spu->p->p_blend;
941 if( p_blend->p_module && p_blend->fmt_in.video.i_chroma != p_in_fmt->i_chroma )
943 /* The chroma is not the same, we need to reload the blend module
944 * XXX to match the old behaviour just test !p_blend->fmt_in.video.i_chroma */
945 module_unneed( p_blend, p_blend->p_module );
946 p_blend->p_module = NULL;
950 p_blend->fmt_in.video = *p_in_fmt;
953 p_blend->fmt_out.video.i_width =
954 p_blend->fmt_out.video.i_visible_width = i_out_width;
955 p_blend->fmt_out.video.i_height =
956 p_blend->fmt_out.video.i_visible_height = i_out_height;
959 if( !p_blend->p_module )
960 p_blend->p_module = module_need( p_blend, "video blending", 0, 0 );
962 static void SpuRenderCreateAndLoadText( spu_t *p_spu )
966 assert( !p_spu->p->p_text );
969 p_text = vlc_custom_create( p_spu, sizeof(filter_t),
970 VLC_OBJECT_GENERIC, "spu text" );
974 es_format_Init( &p_text->fmt_in, VIDEO_ES, 0 );
976 es_format_Init( &p_text->fmt_out, VIDEO_ES, 0 );
977 p_text->fmt_out.video.i_width =
978 p_text->fmt_out.video.i_visible_width = 32;
979 p_text->fmt_out.video.i_height =
980 p_text->fmt_out.video.i_visible_height = 32;
982 p_text->pf_sub_buffer_new = spu_new_buffer;
983 p_text->pf_sub_buffer_del = spu_del_buffer;
985 vlc_object_attach( p_text, p_spu );
987 /* FIXME TOCHECK shouldn't module_need( , , psz_modulename, false ) do the
988 * same than these 2 calls ? */
989 char *psz_modulename = var_CreateGetString( p_spu, "text-renderer" );
990 if( psz_modulename && *psz_modulename )
992 p_text->p_module = module_need( p_text, "text renderer",
993 psz_modulename, true );
995 free( psz_modulename );
997 if( !p_text->p_module )
998 p_text->p_module = module_need( p_text, "text renderer", NULL, false );
1000 /* Create a few variables used for enhanced text rendering */
1001 var_Create( p_text, "spu-duration", VLC_VAR_TIME );
1002 var_Create( p_text, "spu-elapsed", VLC_VAR_TIME );
1003 var_Create( p_text, "text-rerender", VLC_VAR_BOOL );
1004 var_Create( p_text, "scale", VLC_VAR_INTEGER );
1007 static filter_t *CreateAndLoadScale( vlc_object_t *p_obj,
1008 vlc_fourcc_t i_src_chroma, vlc_fourcc_t i_dst_chroma,
1013 p_scale = vlc_custom_create( p_obj, sizeof(filter_t),
1014 VLC_OBJECT_GENERIC, "scale" );
1018 es_format_Init( &p_scale->fmt_in, VIDEO_ES, 0 );
1019 p_scale->fmt_in.video.i_chroma = i_src_chroma;
1020 p_scale->fmt_in.video.i_width =
1021 p_scale->fmt_in.video.i_height = 32;
1023 es_format_Init( &p_scale->fmt_out, VIDEO_ES, 0 );
1024 p_scale->fmt_out.video.i_chroma = i_dst_chroma;
1025 p_scale->fmt_out.video.i_width =
1026 p_scale->fmt_out.video.i_height = b_resize ? 16 : 32;
1028 p_scale->pf_vout_buffer_new = spu_new_video_buffer;
1029 p_scale->pf_vout_buffer_del = spu_del_video_buffer;
1031 vlc_object_attach( p_scale, p_obj );
1032 p_scale->p_module = module_need( p_scale, "video filter2", 0, 0 );
1036 static void SpuRenderCreateAndLoadScale( spu_t *p_spu )
1038 assert( !p_spu->p->p_scale );
1039 assert( !p_spu->p->p_scale_yuvp );
1040 /* XXX p_spu->p_scale is used for all conversion/scaling except yuvp to
1042 p_spu->p->p_scale = CreateAndLoadScale( VLC_OBJECT(p_spu),
1043 VLC_FOURCC_YUVA, VLC_FOURCC_YUVA, true );
1044 /* This one is used for YUVP to YUVA/RGBA without scaling
1045 * FIXME rename it */
1046 p_spu->p->p_scale_yuvp = CreateAndLoadScale( VLC_OBJECT(p_spu),
1047 VLC_FOURCC_YUVP, VLC_FOURCC_YUVA, false );
1050 static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
1051 subpicture_t *p_subpic, subpicture_region_t *p_region,
1052 int i_min_scale_ratio )
1054 filter_t *p_text = p_spu->p->p_text;
1056 assert( p_region->fmt.i_chroma == VLC_FOURCC_TEXT );
1058 if( !p_text || !p_text->p_module )
1061 /* Setup 3 variables which can be used to render
1062 * time-dependent text (and effects). The first indicates
1063 * the total amount of time the text will be on screen,
1064 * the second the amount of time it has already been on
1065 * screen (can be a negative value as text is layed out
1066 * before it is rendered) and the third is a feedback
1067 * variable from the renderer - if the renderer sets it
1068 * then this particular text is time-dependent, eg. the
1069 * visual progress bar inside the text in karaoke and the
1070 * text needs to be rendered multiple times in order for
1071 * the effect to work - we therefore need to return the
1072 * region to its original state at the end of the loop,
1073 * instead of leaving it in YUVA or YUVP.
1074 * Any renderer which is unaware of how to render
1075 * time-dependent text can happily ignore the variables
1076 * and render the text the same as usual - it should at
1077 * least show up on screen, but the effect won't change
1078 * the text over time.
1080 var_SetTime( p_text, "spu-duration", p_subpic->i_stop - p_subpic->i_start );
1081 var_SetTime( p_text, "spu-elapsed", mdate() - p_subpic->i_start );
1082 var_SetBool( p_text, "text-rerender", false );
1083 var_SetInteger( p_text, "scale", i_min_scale_ratio );
1085 if( p_text->pf_render_html && p_region->psz_html )
1087 p_text->pf_render_html( p_text, p_region, p_region );
1089 else if( p_text->pf_render_text )
1091 p_text->pf_render_text( p_text, p_region, p_region );
1093 *pb_rerender_text = var_GetBool( p_text, "text-rerender" );
1096 p_region->i_align |= SUBPICTURE_RENDERED;
1100 * A few scale functions helpers.
1102 static spu_scale_t spu_scale_create( int w, int h )
1104 spu_scale_t s = { .w = w, .h = h };
1111 static spu_scale_t spu_scale_unit( void )
1113 return spu_scale_create( SCALE_UNIT, SCALE_UNIT );
1115 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd )
1117 return spu_scale_create( wn * SCALE_UNIT / wd,
1118 hn * SCALE_UNIT / hd );
1120 static int spu_scale_w( int v, const spu_scale_t s )
1122 return v * s.w / SCALE_UNIT;
1124 static int spu_scale_h( int v, const spu_scale_t s )
1126 return v * s.h / SCALE_UNIT;
1128 static int spu_invscale_w( int v, const spu_scale_t s )
1130 return v * SCALE_UNIT / s.w;
1132 static int spu_invscale_h( int v, const spu_scale_t s )
1134 return v * SCALE_UNIT / s.h;
1138 * A few area functions helpers
1140 static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t s )
1142 spu_area_t a = { .i_x = x, .i_y = y, .i_width = w, .i_height = h, .scale = s };
1145 static spu_area_t spu_area_scaled( spu_area_t a )
1147 if( a.scale.w == SCALE_UNIT && a.scale.h == SCALE_UNIT )
1150 a.i_x = spu_scale_w( a.i_x, a.scale );
1151 a.i_y = spu_scale_h( a.i_y, a.scale );
1153 a.i_width = spu_scale_w( a.i_width, a.scale );
1154 a.i_height = spu_scale_h( a.i_height, a.scale );
1156 a.scale = spu_scale_unit();
1159 static spu_area_t spu_area_unscaled( spu_area_t a, spu_scale_t s )
1161 if( a.scale.w == s.w && a.scale.h == s.h )
1164 a = spu_area_scaled( a );
1166 a.i_x = spu_invscale_w( a.i_x, s );
1167 a.i_y = spu_invscale_h( a.i_y, s );
1169 a.i_width = spu_invscale_w( a.i_width, s );
1170 a.i_height = spu_invscale_h( a.i_height, s );
1175 static bool spu_area_overlap( spu_area_t a, spu_area_t b )
1180 a = spu_area_scaled( a );
1181 b = spu_area_scaled( b );
1183 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 ) &&
1184 __MAX( a.i_y-i_dy, b.i_y ) < __MIN( a.i_y+a.i_height+i_dy, b.i_y+b.i_height );
1188 * Avoid area overlapping
1190 static void SpuAreaFixOverlap( spu_area_t *p_dst,
1191 const spu_area_t *p_master,
1192 const spu_area_t *p_sub, int i_sub, int i_align )
1194 spu_area_t a = spu_area_scaled( *p_dst );
1195 bool b_moved = false;
1198 assert( p_master->i_x == 0 && p_master->i_y == 0 );
1200 /* Check for overlap
1201 * XXX It is not fast O(n^2) but we should not have a lot of region */
1205 for( int i = 0; i < i_sub; i++ )
1207 spu_area_t sub = spu_area_scaled( p_sub[i] );
1209 if( !spu_area_overlap( a, sub ) )
1212 if( i_align & SUBPICTURE_ALIGN_TOP )
1215 int i_y = sub.i_y + sub.i_height;
1216 if( i_y + a.i_height > p_master->i_height )
1221 else if( i_align & SUBPICTURE_ALIGN_BOTTOM )
1224 int i_y = sub.i_y - a.i_height;
1232 /* TODO what to do in this case? */
1233 //fprintf( stderr, "Overlap with unsupported alignment\n" );
1243 *p_dst = spu_area_unscaled( a, p_dst->scale );
1250 static void SpuRegionPlace( int *pi_x, int *pi_y,
1251 const subpicture_t *p_subpic,
1252 const subpicture_region_t *p_region,
1255 const int i_delta_x = p_region->i_x;
1256 const int i_delta_y = p_region->i_y;
1259 assert( p_region->i_x != INT_MAX && p_region->i_y != INT_MAX );
1260 if( p_region->i_align & SUBPICTURE_ALIGN_TOP )
1264 else if( p_region->i_align & SUBPICTURE_ALIGN_BOTTOM )
1266 i_y = p_subpic->i_original_picture_height - p_region->fmt.i_height - i_delta_y;
1270 i_y = p_subpic->i_original_picture_height / 2 - p_region->fmt.i_height / 2;
1273 if( p_region->i_align & SUBPICTURE_ALIGN_LEFT )
1277 else if( p_region->i_align & SUBPICTURE_ALIGN_RIGHT )
1279 i_x = p_subpic->i_original_picture_width - p_region->fmt.i_width - i_delta_x;
1283 i_x = p_subpic->i_original_picture_width / 2 - p_region->fmt.i_width / 2;
1286 if( p_subpic->b_absolute )
1292 /* Margin shifts all subpictures */
1293 if( i_margin_y != 0 )
1296 /* Clamp offset to not go out of the screen (when possible) */
1297 const int i_error_x = (i_x + p_region->fmt.i_width) - p_subpic->i_original_picture_width;
1303 const int i_error_y = (i_y + p_region->fmt.i_height) - p_subpic->i_original_picture_height;
1314 * This function computes the current alpha value for a given region.
1316 static int SpuRegionAlpha( subpicture_t *p_subpic, subpicture_region_t *p_region )
1318 /* Compute alpha blend value */
1319 int i_fade_alpha = 255;
1320 if( p_subpic->b_fade )
1322 mtime_t i_fade_start = ( p_subpic->i_stop +
1323 p_subpic->i_start ) / 2;
1324 mtime_t i_now = mdate();
1326 if( i_now >= i_fade_start && p_subpic->i_stop > i_fade_start )
1328 i_fade_alpha = 255 * ( p_subpic->i_stop - i_now ) /
1329 ( p_subpic->i_stop - i_fade_start );
1332 return i_fade_alpha * p_subpic->i_alpha * p_region->i_alpha / 65025;
1336 * It will render the provided region onto p_pic_dst.
1339 static void SpuRenderRegion( spu_t *p_spu,
1340 picture_t *p_pic_dst, spu_area_t *p_area,
1341 subpicture_t *p_subpic, subpicture_region_t *p_region,
1342 const spu_scale_t scale_size,
1343 const video_format_t *p_fmt,
1344 const spu_area_t *p_subtitle_area, int i_subtitle_area )
1346 spu_private_t *p_sys = p_spu->p;
1348 video_format_t fmt_original = p_region->fmt;
1349 bool b_rerender_text = false;
1350 bool b_restore_format = false;
1354 video_format_t region_fmt;
1355 picture_t *p_region_picture;
1357 /* Invalidate area by default */
1358 *p_area = spu_area_create( 0,0, 0,0, scale_size );
1360 /* Render text region */
1361 if( p_region->fmt.i_chroma == VLC_FOURCC_TEXT )
1363 const int i_min_scale_ratio = SCALE_UNIT; /* FIXME what is the right value? (scale_size is not) */
1364 SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region, i_min_scale_ratio );
1365 b_restore_format = b_rerender_text;
1367 /* Check if the rendering has failed ... */
1368 if( p_region->fmt.i_chroma == VLC_FOURCC_TEXT )
1372 /* Force palette if requested
1373 * FIXME b_force_palette and b_force_crop are applied to all subpictures using palette
1374 * instead of only the right one (being the dvd spu).
1376 const bool b_using_palette = p_region->fmt.i_chroma == VLC_FOURCC_YUVP;
1377 const bool b_force_palette = b_using_palette && p_sys->b_force_palette;
1378 const bool b_force_crop = b_force_palette && p_sys->b_force_crop;
1379 bool b_changed_palette = false;
1382 /* Compute the margin which is expressed in destination pixel unit
1383 * The margin is applied only to subtitle and when no forced crop is
1384 * requested (dvd menu) */
1386 if( !b_force_crop && p_subpic->b_subtitle )
1387 i_margin_y = spu_invscale_h( p_sys->i_margin, scale_size );
1389 /* Place the picture
1390 * We compute the position in the rendered size */
1391 SpuRegionPlace( &i_x_offset, &i_y_offset,
1392 p_subpic, p_region, i_margin_y );
1394 /* Save this position for subtitle overlap support
1395 * it is really important that there are given without scale_size applied */
1396 *p_area = spu_area_create( i_x_offset, i_y_offset,
1397 p_region->fmt.i_width, p_region->fmt.i_height,
1400 /* Handle overlapping subtitles when possible */
1401 if( p_subpic->b_subtitle && !p_subpic->b_absolute )
1403 spu_area_t display = spu_area_create( 0, 0, p_fmt->i_width, p_fmt->i_height,
1406 SpuAreaFixOverlap( p_area, &display, p_subtitle_area, i_subtitle_area,
1407 p_region->i_align );
1410 /* Fix the position for the current scale_size */
1411 i_x_offset = spu_scale_w( p_area->i_x, p_area->scale );
1412 i_y_offset = spu_scale_h( p_area->i_y, p_area->scale );
1415 if( b_force_palette )
1417 video_palette_t *p_palette = p_region->fmt.p_palette;
1418 video_palette_t palette;
1420 /* We suppose DVD palette here */
1421 palette.i_entries = 4;
1422 for( int i = 0; i < 4; i++ )
1423 for( int j = 0; j < 4; j++ )
1424 palette.palette[i][j] = p_sys->palette[i][j];
1426 if( p_palette->i_entries == palette.i_entries )
1428 for( int i = 0; i < p_palette->i_entries; i++ )
1429 for( int j = 0; j < 4; j++ )
1430 b_changed_palette |= p_palette->palette[i][j] != palette.palette[i][j];
1434 b_changed_palette = true;
1436 *p_palette = palette;
1440 region_fmt = p_region->fmt;
1441 p_region_picture = p_region->p_picture;
1444 /* Scale from rendered size to destination size */
1445 if( p_sys->p_scale && p_sys->p_scale->p_module &&
1446 ( !b_using_palette || ( p_sys->p_scale_yuvp && p_sys->p_scale_yuvp->p_module ) ) &&
1447 ( scale_size.w != SCALE_UNIT || scale_size.h != SCALE_UNIT || b_using_palette ) )
1449 const unsigned i_dst_width = spu_scale_w( p_region->fmt.i_width, scale_size );
1450 const unsigned i_dst_height = spu_scale_h( p_region->fmt.i_height, scale_size );
1452 /* Destroy the cache if unusable */
1453 if( p_region->p_private )
1455 subpicture_region_private_t *p_private = p_region->p_private;
1456 bool b_changed = false;
1458 /* Check resize changes */
1459 if( i_dst_width != p_private->fmt.i_width ||
1460 i_dst_height != p_private->fmt.i_height )
1463 /* Check forced palette changes */
1464 if( b_changed_palette )
1469 SpuRegionPrivateDelete( p_private );
1470 p_region->p_private = NULL;
1474 /* Scale if needed into cache */
1475 if( !p_region->p_private )
1477 filter_t *p_scale = p_sys->p_scale;
1479 picture_t *p_picture = p_region->p_picture;
1480 picture_Hold( p_picture );
1482 /* Convert YUVP to YUVA/RGBA first for better scaling quality */
1483 if( b_using_palette )
1485 filter_t *p_scale_yuvp = p_sys->p_scale_yuvp;
1487 p_scale_yuvp->fmt_in.video = p_region->fmt;
1489 /* TODO converting to RGBA for RGB video output is better */
1490 p_scale_yuvp->fmt_out.video = p_region->fmt;
1491 p_scale_yuvp->fmt_out.video.i_chroma = VLC_FOURCC_YUVA;
1493 p_picture = p_scale_yuvp->pf_video_filter( p_scale_yuvp, p_picture );
1496 /* Well we will try conversion+scaling */
1497 msg_Warn( p_spu, "%4.4s to %4.4s conversion failed",
1498 (const char*)&p_scale_yuvp->fmt_in.video.i_chroma,
1499 (const char*)&p_scale_yuvp->fmt_out.video.i_chroma );
1503 /* Conversion(except from YUVP)/Scaling */
1505 ( p_picture->format.i_width != i_dst_width ||
1506 p_picture->format.i_height != i_dst_height ) )
1508 p_scale->fmt_in.video = p_picture->format;
1509 p_scale->fmt_out.video = p_picture->format;
1511 p_scale->fmt_out.video.i_width = i_dst_width;
1512 p_scale->fmt_out.video.i_height = i_dst_height;
1514 p_scale->fmt_out.video.i_visible_width =
1515 spu_scale_w( p_region->fmt.i_visible_width, scale_size );
1516 p_scale->fmt_out.video.i_visible_height =
1517 spu_scale_h( p_region->fmt.i_visible_height, scale_size );
1519 p_picture = p_scale->pf_video_filter( p_scale, p_picture );
1521 msg_Err( p_spu, "scaling failed" );
1527 p_region->p_private = SpuRegionPrivateNew( &p_picture->format );
1528 if( p_region->p_private )
1530 p_region->p_private->p_picture = p_picture;
1531 if( !p_region->p_private->p_picture )
1533 SpuRegionPrivateDelete( p_region->p_private );
1534 p_region->p_private = NULL;
1539 picture_Release( p_picture );
1544 /* And use the scaled picture */
1545 if( p_region->p_private )
1547 region_fmt = p_region->p_private->fmt;
1548 p_region_picture = p_region->p_private->p_picture;
1552 /* Force cropping if requested */
1555 int i_crop_x = spu_scale_w( p_sys->i_crop_x, scale_size );
1556 int i_crop_y = spu_scale_h( p_sys->i_crop_y, scale_size );
1557 int i_crop_width = spu_scale_w( p_sys->i_crop_width, scale_size );
1558 int i_crop_height= spu_scale_h( p_sys->i_crop_height,scale_size );
1560 /* Find the intersection */
1561 if( i_crop_x + i_crop_width <= i_x_offset ||
1562 i_x_offset + (int)region_fmt.i_visible_width < i_crop_x ||
1563 i_crop_y + i_crop_height <= i_y_offset ||
1564 i_y_offset + (int)region_fmt.i_visible_height < i_crop_y )
1566 /* No intersection */
1567 region_fmt.i_visible_width =
1568 region_fmt.i_visible_height = 0;
1572 int i_x, i_y, i_x_end, i_y_end;
1573 i_x = __MAX( i_crop_x, i_x_offset );
1574 i_y = __MAX( i_crop_y, i_y_offset );
1575 i_x_end = __MIN( i_crop_x + i_crop_width,
1576 i_x_offset + (int)region_fmt.i_visible_width );
1577 i_y_end = __MIN( i_crop_y + i_crop_height,
1578 i_y_offset + (int)region_fmt.i_visible_height );
1580 region_fmt.i_x_offset = i_x - i_x_offset;
1581 region_fmt.i_y_offset = i_y - i_y_offset;
1582 region_fmt.i_visible_width = i_x_end - i_x;
1583 region_fmt.i_visible_height = i_y_end - i_y;
1585 i_x_offset = __MAX( i_x, 0 );
1586 i_y_offset = __MAX( i_y, 0 );
1590 /* Update the blender */
1591 SpuRenderUpdateBlend( p_spu, p_fmt->i_width, p_fmt->i_height, ®ion_fmt );
1593 if( p_sys->p_blend->p_module )
1595 const int i_alpha = SpuRegionAlpha( p_subpic, p_region );
1597 p_sys->p_blend->pf_video_blend( p_sys->p_blend, p_pic_dst,
1598 p_region_picture, i_x_offset, i_y_offset, i_alpha );
1602 msg_Err( p_spu, "blending %4.4s to %4.4s failed",
1603 (char *)&p_sys->p_blend->fmt_out.video.i_chroma,
1604 (char *)&p_sys->p_blend->fmt_out.video.i_chroma );
1608 if( b_rerender_text )
1610 /* Some forms of subtitles need to be re-rendered more than
1611 * once, eg. karaoke. We therefore restore the region to its
1612 * pre-rendered state, so the next time through everything is
1615 picture_Release( p_region->p_picture );
1616 p_region->p_picture = NULL;
1617 if( p_region->p_private )
1619 SpuRegionPrivateDelete( p_region->p_private );
1620 p_region->p_private = NULL;
1622 p_region->i_align &= ~SUBPICTURE_RENDERED;
1624 if( b_restore_format )
1625 p_region->fmt = fmt_original;
1629 * This function compares two 64 bits integers.
1630 * It can be used by qsort.
1632 static int IntegerCmp( int64_t i0, int64_t i1 )
1634 return i0 < i1 ? -1 : i0 > i1 ? 1 : 0;
1637 * This function compares 2 subpictures using the following properties
1638 * (ordered by priority)
1639 * 1. absolute positionning
1641 * 3. creation order (per channel)
1643 * It can be used by qsort.
1645 * XXX spu_RenderSubpictures depends heavily on this order.
1647 static int SubpictureCmp( const void *s0, const void *s1 )
1649 subpicture_t *p_subpic0 = *(subpicture_t**)s0;
1650 subpicture_t *p_subpic1 = *(subpicture_t**)s1;
1653 r = IntegerCmp( !p_subpic0->b_absolute, !p_subpic1->b_absolute );
1655 r = IntegerCmp( p_subpic0->i_start, p_subpic1->i_start );
1657 r = IntegerCmp( p_subpic0->i_channel, p_subpic1->i_channel );
1659 r = IntegerCmp( p_subpic0->i_order, p_subpic1->i_order );
1663 /*****************************************************************************
1664 * SpuClearChannel: clear an spu channel
1665 *****************************************************************************
1666 * This function destroys the subpictures which belong to the spu channel
1667 * corresponding to i_channel_id.
1668 *****************************************************************************/
1669 static void SpuClearChannel( spu_t *p_spu, int i_channel, bool b_locked )
1671 spu_private_t *p_sys = p_spu->p;
1672 int i_subpic; /* subpicture index */
1675 vlc_mutex_lock( &p_sys->lock );
1677 vlc_assert_locked( &p_sys->lock );
1679 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
1681 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_subpic];
1682 subpicture_t *p_subpic = p_entry->p_subpicture;
1684 if( !p_subpic || p_subpic->i_channel != i_channel )
1687 /* You cannot delete subpicture outside of spu_SortSubpictures */
1688 p_entry->b_reject = true;
1692 vlc_mutex_unlock( &p_sys->lock );
1695 /*****************************************************************************
1696 * spu_ControlDefault: default methods for the subpicture unit control.
1697 *****************************************************************************/
1698 static int SpuControl( spu_t *p_spu, int i_query, va_list args )
1700 spu_private_t *p_sys = p_spu->p;
1705 case SPU_CHANNEL_REGISTER:
1706 pi = (int *)va_arg( args, int * );
1707 vlc_mutex_lock( &p_sys->lock );
1709 *pi = p_sys->i_channel++;
1710 vlc_mutex_unlock( &p_sys->lock );
1713 case SPU_CHANNEL_CLEAR:
1714 i = (int)va_arg( args, int );
1715 SpuClearChannel( p_spu, i, false );
1719 msg_Dbg( p_spu, "control query not supported" );
1720 return VLC_EGENERIC;
1726 /*****************************************************************************
1727 * Object variables callbacks
1728 *****************************************************************************/
1730 /*****************************************************************************
1731 * UpdateSPU: update subpicture settings
1732 *****************************************************************************
1733 * This function is called from CropCallback and at initialization time, to
1734 * retrieve crop information from the input.
1735 *****************************************************************************/
1736 static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
1738 spu_private_t *p_sys = p_spu->p;
1741 vlc_mutex_lock( &p_sys->lock );
1743 p_sys->b_force_palette = false;
1744 p_sys->b_force_crop = false;
1746 if( var_Get( p_object, "highlight", &val ) || !val.b_bool )
1748 vlc_mutex_unlock( &p_sys->lock );
1752 p_sys->b_force_crop = true;
1753 p_sys->i_crop_x = var_GetInteger( p_object, "x-start" );
1754 p_sys->i_crop_y = var_GetInteger( p_object, "y-start" );
1755 p_sys->i_crop_width = var_GetInteger( p_object, "x-end" ) - p_sys->i_crop_x;
1756 p_sys->i_crop_height = var_GetInteger( p_object, "y-end" ) - p_sys->i_crop_y;
1758 if( var_Get( p_object, "menu-palette", &val ) == VLC_SUCCESS )
1760 memcpy( p_sys->palette, val.p_address, 16 );
1761 p_sys->b_force_palette = true;
1763 vlc_mutex_unlock( &p_sys->lock );
1765 msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
1766 p_sys->i_crop_x, p_sys->i_crop_y,
1767 p_sys->i_crop_width, p_sys->i_crop_height,
1768 p_sys->b_force_palette );
1771 /*****************************************************************************
1772 * CropCallback: called when the highlight properties are changed
1773 *****************************************************************************
1774 * This callback is called from the input thread when we need cropping
1775 *****************************************************************************/
1776 static int CropCallback( vlc_object_t *p_object, char const *psz_var,
1777 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1779 VLC_UNUSED(oldval); VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1781 UpdateSPU( (spu_t *)p_data, p_object );
1785 /*****************************************************************************
1786 * Buffers allocation callbacks for the filters
1787 *****************************************************************************/
1788 struct filter_owner_sys_t
1794 static subpicture_t *sub_new_buffer( filter_t *p_filter )
1796 filter_owner_sys_t *p_sys = p_filter->p_owner;
1798 subpicture_t *p_subpicture = subpicture_New();
1800 p_subpicture->i_channel = p_sys->i_channel;
1801 return p_subpicture;
1803 static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1805 VLC_UNUSED( p_filter );
1806 subpicture_Delete( p_subpic );
1809 static subpicture_t *spu_new_buffer( filter_t *p_filter )
1811 VLC_UNUSED(p_filter);
1812 return subpicture_New();
1814 static void spu_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1816 VLC_UNUSED(p_filter);
1817 subpicture_Delete( p_subpic );
1820 static picture_t *spu_new_video_buffer( filter_t *p_filter )
1822 const video_format_t *p_fmt = &p_filter->fmt_out.video;
1824 VLC_UNUSED(p_filter);
1825 return picture_New( p_fmt->i_chroma,
1826 p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
1828 static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_picture )
1830 VLC_UNUSED(p_filter);
1831 picture_Release( p_picture );
1834 static int SubFilterAllocationInit( filter_t *p_filter, void *p_data )
1836 spu_t *p_spu = p_data;
1838 filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
1840 return VLC_EGENERIC;
1842 p_filter->pf_sub_buffer_new = sub_new_buffer;
1843 p_filter->pf_sub_buffer_del = sub_del_buffer;
1845 p_filter->p_owner = p_sys;
1846 spu_Control( p_spu, SPU_CHANNEL_REGISTER, &p_sys->i_channel );
1847 p_sys->p_spu = p_spu;
1852 static void SubFilterAllocationClean( filter_t *p_filter )
1854 filter_owner_sys_t *p_sys = p_filter->p_owner;
1856 SpuClearChannel( p_sys->p_spu, p_sys->i_channel, true );
1857 free( p_filter->p_owner );
1860 static int SubFilterCallback( vlc_object_t *p_object, char const *psz_var,
1861 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1863 spu_t *p_spu = p_data;
1864 spu_private_t *p_sys = p_spu->p;
1866 VLC_UNUSED(p_object); VLC_UNUSED(oldval);
1867 VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1869 vlc_mutex_lock( &p_sys->lock );
1870 filter_chain_Reset( p_sys->p_chain, NULL, NULL );
1871 spu_ParseChain( p_spu );
1872 vlc_mutex_unlock( &p_sys->lock );