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 *****************************************************************************/
36 #include <vlc_common.h>
38 #include <vlc_block.h>
39 #include <vlc_filter.h>
41 #include "../libvlc.h"
42 #include "vout_internal.h"
43 #include <vlc_image.h>
44 #include <vlc_input.h>
46 /*****************************************************************************
48 *****************************************************************************/
50 /* Number of simultaneous subpictures */
51 #define VOUT_MAX_SUBPICTURES (__MAX(VOUT_MAX_PICTURES, SPU_MAX_PREPARE_TIME/5000))
56 subpicture_t *p_subpicture;
62 spu_heap_entry_t p_entry[VOUT_MAX_SUBPICTURES];
66 static void SpuHeapInit( spu_heap_t * );
67 static int SpuHeapPush( spu_heap_t *, subpicture_t * );
68 static void SpuHeapDeleteAt( spu_heap_t *, int i_index );
69 static int SpuHeapDeleteSubpicture( spu_heap_t *, subpicture_t * );
70 static void SpuHeapClean( spu_heap_t *p_heap );
74 vlc_mutex_t lock; /* lock to protect all followings fields */
75 vlc_object_t *p_input;
79 int i_channel; /**< number of subpicture channels registered */
80 filter_t *p_blend; /**< alpha blending module */
81 filter_t *p_text; /**< text renderer module */
82 filter_t *p_scale_yuvp; /**< scaling module for YUVP */
83 filter_t *p_scale; /**< scaling module (all but YUVP) */
84 bool b_force_crop; /**< force cropping of subpicture */
85 int i_crop_x, i_crop_y, i_crop_width, i_crop_height; /**< cropping */
87 int i_margin; /**< force position of a subpicture */
88 bool b_force_palette; /**< force palette of subpicture */
89 uint8_t palette[4][4]; /**< forced palette */
91 /* Subpiture filters */
92 char *psz_chain_update;
93 vlc_mutex_t chain_lock;
94 filter_chain_t *p_chain;
97 mtime_t i_last_sort_date;
101 struct subpicture_region_private_t
104 picture_t *p_picture;
106 static subpicture_region_private_t *SpuRegionPrivateNew( video_format_t * );
107 static void SpuRegionPrivateDelete( subpicture_region_private_t * );
115 static spu_scale_t spu_scale_create( int w, int h );
116 static spu_scale_t spu_scale_unit(void );
117 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd );
118 static int spu_scale_w( int v, const spu_scale_t s );
119 static int spu_scale_h( int v, const spu_scale_t s );
120 static int spu_invscale_w( int v, const spu_scale_t s );
121 static int spu_invscale_h( int v, const spu_scale_t s );
133 static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t );
134 static spu_area_t spu_area_scaled( spu_area_t );
135 static spu_area_t spu_area_unscaled( spu_area_t, spu_scale_t );
136 static bool spu_area_overlap( spu_area_t, spu_area_t );
139 /* Subpicture rendered flag
140 * FIXME ? it could be moved to private ? */
141 #define SUBPICTURE_RENDERED (0x1000)
142 #if SUBPICTURE_RENDERED < SUBPICTURE_ALIGN_MASK
143 # error SUBPICTURE_RENDERED too low
146 #define SCALE_UNIT (1000)
148 static void SubpictureUpdate( subpicture_t *,
149 const video_format_t *p_fmt_src,
150 const video_format_t *p_fmt_dst,
152 static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic );
153 static int SubpictureCmp( const void *s0, const void *s1 );
155 static void SpuRenderRegion( spu_t *,
156 picture_t *p_pic_dst, spu_area_t *,
157 subpicture_t *, subpicture_region_t *,
158 const spu_scale_t scale_size,
159 const video_format_t *p_fmt,
160 const spu_area_t *p_subtitle_area, int i_subtitle_area,
161 mtime_t render_date );
163 static void UpdateSPU ( spu_t *, vlc_object_t * );
164 static int CropCallback( vlc_object_t *, char const *,
165 vlc_value_t, vlc_value_t, void * );
167 /* Buffer allocation for SPU filter (blend, scale, ...) */
168 struct filter_owner_sys_t
173 static int spu_get_attachments( filter_t *,
174 input_attachment_t ***, int * );
175 static picture_t *spu_new_video_buffer( filter_t * );
176 static void spu_del_video_buffer( filter_t *, picture_t * );
178 /* Buffer aloccation fir SUB filter */
179 static int SubFilterAllocationInit( filter_t *, void * );
180 static void SubFilterAllocationClean( filter_t * );
183 static void SpuRenderCreateAndLoadText( spu_t * );
184 static void SpuRenderCreateAndLoadScale( spu_t * );
185 static void FilterRelease( filter_t *p_filter );
187 /*****************************************************************************
189 *****************************************************************************/
193 * Creates the subpicture unit
195 * \param p_this the parent object which creates the subpicture unit
197 spu_t *spu_Create( vlc_object_t *p_this )
200 spu_private_t *p_sys;
202 p_spu = vlc_custom_create( p_this, sizeof(spu_t) + sizeof(spu_private_t),
203 VLC_OBJECT_GENERIC, "subpicture" );
206 vlc_object_attach( p_spu, p_this );
208 /* Initialize spu fields */
209 p_spu->p = p_sys = (spu_private_t*)&p_spu[1];
211 /* Initialize private fields */
212 vlc_mutex_init( &p_sys->lock );
214 SpuHeapInit( &p_sys->heap );
216 p_sys->p_blend = NULL;
217 p_sys->p_text = NULL;
218 p_sys->p_scale = NULL;
219 p_sys->p_scale_yuvp = NULL;
221 p_sys->i_margin = var_InheritInteger( p_spu, "sub-margin" );
223 /* Register the default subpicture channel */
224 p_sys->i_channel = SPU_DEFAULT_CHANNEL + 1;
226 p_sys->psz_chain_update = NULL;
227 vlc_mutex_init( &p_sys->chain_lock );
228 p_sys->p_chain = filter_chain_New( p_spu, "sub filter", false,
229 SubFilterAllocationInit,
230 SubFilterAllocationClean,
233 /* Load text and scale module */
234 SpuRenderCreateAndLoadText( p_spu );
235 SpuRenderCreateAndLoadScale( p_spu );
238 p_sys->i_last_sort_date = -1;
244 * Destroy the subpicture unit
246 * \param p_this the parent object which destroys the subpicture unit
248 void spu_Destroy( spu_t *p_spu )
250 spu_private_t *p_sys = p_spu->p;
253 filter_DeleteBlend( p_sys->p_blend );
256 FilterRelease( p_sys->p_text );
258 if( p_sys->p_scale_yuvp )
259 FilterRelease( p_sys->p_scale_yuvp );
262 FilterRelease( p_sys->p_scale );
264 filter_chain_Delete( p_sys->p_chain );
265 vlc_mutex_destroy( &p_sys->chain_lock );
266 free( p_sys->psz_chain_update );
268 /* Destroy all remaining subpictures */
269 SpuHeapClean( &p_sys->heap );
271 vlc_mutex_destroy( &p_sys->lock );
273 vlc_object_release( p_spu );
277 * Attach/Detach the SPU from any input
279 * \param p_this the object in which to destroy the subpicture unit
280 * \param b_attach to select attach or detach
282 void spu_Attach( spu_t *p_spu, vlc_object_t *p_input, bool b_attach )
286 UpdateSPU( p_spu, p_input );
287 var_Create( p_input, "highlight", VLC_VAR_BOOL );
288 var_AddCallback( p_input, "highlight", CropCallback, p_spu );
290 vlc_mutex_lock( &p_spu->p->lock );
291 p_spu->p->p_input = p_input;
293 FilterRelease( p_spu->p->p_text );
294 p_spu->p->p_text = NULL;
295 SpuRenderCreateAndLoadText( p_spu );
297 vlc_mutex_unlock( &p_spu->p->lock );
301 vlc_mutex_lock( &p_spu->p->lock );
302 p_spu->p->p_input = NULL;
303 vlc_mutex_unlock( &p_spu->p->lock );
305 /* Delete callbacks */
306 var_DelCallback( p_input, "highlight", CropCallback, p_spu );
307 var_Destroy( p_input, "highlight" );
312 * Inform the SPU filters of mouse event
314 int spu_ProcessMouse( spu_t *p_spu,
315 const vlc_mouse_t *p_mouse,
316 const video_format_t *p_fmt )
318 spu_private_t *p_sys = p_spu->p;
320 vlc_mutex_lock( &p_sys->chain_lock );
321 filter_chain_MouseEvent( p_sys->p_chain, p_mouse, p_fmt );
322 vlc_mutex_unlock( &p_sys->chain_lock );
328 * Display a subpicture
330 * Remove the reservation flag of a subpicture, which will cause it to be
332 * \param p_spu the subpicture unit object
333 * \param p_subpic the subpicture to display
335 void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
337 spu_private_t *p_sys = p_spu->p;
339 /* SPU_DEFAULT_CHANNEL always reset itself */
340 if( p_subpic->i_channel == SPU_DEFAULT_CHANNEL )
341 spu_ClearChannel( p_spu, SPU_DEFAULT_CHANNEL );
343 /* p_private is for spu only and cannot be non NULL here */
344 for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
345 assert( r->p_private == NULL );
348 vlc_mutex_lock( &p_sys->lock );
349 if( SpuHeapPush( &p_sys->heap, p_subpic ) )
351 vlc_mutex_unlock( &p_sys->lock );
352 msg_Err( p_spu, "subpicture heap full" );
353 subpicture_Delete( p_subpic );
356 vlc_mutex_unlock( &p_sys->lock );
360 * This function renders all sub picture units in the list.
362 void spu_RenderSubpictures( spu_t *p_spu,
363 picture_t *p_pic_dst, const video_format_t *p_fmt_dst,
364 subpicture_t *p_subpic_list,
365 const video_format_t *p_fmt_src,
366 mtime_t render_subtitle_date )
368 spu_private_t *p_sys = p_spu->p;
370 const mtime_t render_osd_date = mdate();
372 const int i_source_video_width = p_fmt_src->i_width;
373 const int i_source_video_height = p_fmt_src->i_height;
375 unsigned int i_subpicture;
376 subpicture_t *pp_subpicture[VOUT_MAX_SUBPICTURES];
378 unsigned int i_subtitle_region_count;
379 spu_area_t p_subtitle_area_buffer[VOUT_MAX_SUBPICTURES];
380 spu_area_t *p_subtitle_area;
383 vlc_mutex_lock( &p_sys->lock );
385 /* Preprocess subpictures */
387 i_subtitle_region_count = 0;
388 for( subpicture_t * p_subpic = p_subpic_list;
390 p_subpic = p_subpic->p_next )
392 SubpictureUpdate( p_subpic,
393 p_fmt_src, p_fmt_dst,
394 p_subpic->b_subtitle ? render_subtitle_date : render_osd_date );
397 if( p_subpic->b_subtitle )
399 for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
400 i_subtitle_region_count++;
404 pp_subpicture[i_subpicture++] = p_subpic;
407 /* Be sure we have at least 1 picture to process */
408 if( i_subpicture <= 0 )
410 vlc_mutex_unlock( &p_sys->lock );
414 /* Now order subpicture array
415 * XXX The order is *really* important for overlap subtitles positionning */
416 qsort( pp_subpicture, i_subpicture, sizeof(*pp_subpicture), SubpictureCmp );
418 /* Allocate area array for subtitle overlap */
420 p_subtitle_area = p_subtitle_area_buffer;
421 if( i_subtitle_region_count > sizeof(p_subtitle_area_buffer)/sizeof(*p_subtitle_area_buffer) )
422 p_subtitle_area = calloc( i_subtitle_region_count, sizeof(*p_subtitle_area) );
424 /* Create the blending module */
425 if( !p_sys->p_blend )
426 p_spu->p->p_blend = filter_NewBlend( VLC_OBJECT(p_spu), p_fmt_dst );
428 /* Process all subpictures and regions (in the right order) */
429 for( unsigned int i_index = 0; i_index < i_subpicture; i_index++ )
431 subpicture_t *p_subpic = pp_subpicture[i_index];
432 subpicture_region_t *p_region;
434 if( !p_subpic->p_region )
437 /* FIXME when possible use a better rendering size than source size
438 * (max of display size and source size for example) FIXME */
439 int i_render_width = p_subpic->i_original_picture_width;
440 int i_render_height = p_subpic->i_original_picture_height;
441 if( !i_render_width || !i_render_height )
443 if( i_render_width != 0 || i_render_height != 0 )
444 msg_Err( p_spu, "unsupported original picture size %dx%d",
445 i_render_width, i_render_height );
447 p_subpic->i_original_picture_width = i_render_width = i_source_video_width;
448 p_subpic->i_original_picture_height = i_render_height = i_source_video_height;
453 p_sys->p_text->fmt_out.video.i_width =
454 p_sys->p_text->fmt_out.video.i_visible_width = i_render_width;
456 p_sys->p_text->fmt_out.video.i_height =
457 p_sys->p_text->fmt_out.video.i_visible_height = i_render_height;
460 /* Compute scaling from picture to source size */
461 spu_scale_t scale = spu_scale_createq( i_source_video_width, i_render_width,
462 i_source_video_height, i_render_height );
464 /* Update scaling from source size to display size(p_fmt_dst) */
465 scale.w = scale.w * p_fmt_dst->i_width / i_source_video_width;
466 scale.h = scale.h * p_fmt_dst->i_height / i_source_video_height;
468 /* Set default subpicture aspect ratio
469 * FIXME if we only handle 1 aspect ratio per picture, why is it set per
471 p_region = p_subpic->p_region;
472 if( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den )
474 p_region->fmt.i_sar_den = p_fmt_dst->i_sar_den;
475 p_region->fmt.i_sar_num = p_fmt_dst->i_sar_num;
478 /* Take care of the aspect ratio */
479 if( p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den !=
480 p_region->fmt.i_sar_den * p_fmt_dst->i_sar_num )
482 /* FIXME FIXME what about region->i_x/i_y ? */
484 (int64_t)p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den /
485 p_region->fmt.i_sar_den / p_fmt_dst->i_sar_num;
488 /* Render all regions
489 * We always transform non absolute subtitle into absolute one on the
490 * first rendering to allow good subtitle overlap support.
492 for( p_region = p_subpic->p_region; p_region != NULL; p_region = p_region->p_next )
496 /* Check scale validity */
497 if( scale.w <= 0 || scale.h <= 0 )
501 SpuRenderRegion( p_spu, p_pic_dst, &area,
502 p_subpic, p_region, scale, p_fmt_dst,
503 p_subtitle_area, i_subtitle_area,
504 p_subpic->b_subtitle ? render_subtitle_date : render_osd_date );
506 if( p_subpic->b_subtitle )
508 area = spu_area_unscaled( area, scale );
509 if( !p_subpic->b_absolute && area.i_width > 0 && area.i_height > 0 )
511 p_region->i_x = area.i_x;
512 p_region->i_y = area.i_y;
514 if( p_subtitle_area )
515 p_subtitle_area[i_subtitle_area++] = area;
518 if( p_subpic->b_subtitle )
519 p_subpic->b_absolute = true;
523 if( p_subtitle_area != p_subtitle_area_buffer )
524 free( p_subtitle_area );
526 vlc_mutex_unlock( &p_sys->lock );
529 /*****************************************************************************
530 * spu_SortSubpictures: find the subpictures to display
531 *****************************************************************************
532 * This function parses all subpictures and decides which ones need to be
533 * displayed. If no picture has been selected, display_date will depend on
535 * We also check for ephemer DVD subpictures (subpictures that have
536 * to be removed if a newer one is available), which makes it a lot
537 * more difficult to guess if a subpicture has to be rendered or not.
538 *****************************************************************************/
539 subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t render_subtitle_date,
540 bool b_subtitle_only )
542 spu_private_t *p_sys = p_spu->p;
543 subpicture_t *p_subpic = NULL;
544 const mtime_t render_osd_date = mdate();
546 /* Update sub-filter chain */
547 vlc_mutex_lock( &p_sys->lock );
548 char *psz_chain_update = p_sys->psz_chain_update;
549 p_sys->psz_chain_update = NULL;
550 vlc_mutex_unlock( &p_sys->lock );
552 vlc_mutex_lock( &p_sys->chain_lock );
553 if( psz_chain_update )
555 filter_chain_Reset( p_sys->p_chain, NULL, NULL );
557 filter_chain_AppendFromString( p_spu->p->p_chain, psz_chain_update );
559 free( psz_chain_update );
561 /* Run subpicture filters */
562 filter_chain_SubFilter( p_sys->p_chain, render_osd_date );
563 vlc_mutex_unlock( &p_sys->chain_lock );
565 vlc_mutex_lock( &p_sys->lock );
567 /* Create a list of channels */
568 int pi_channel[VOUT_MAX_SUBPICTURES];
569 int i_channel_count = 0;
571 for( int i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
573 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_index];
574 if( !p_entry->p_subpicture || p_entry->b_reject )
576 const int i_channel = p_entry->p_subpicture->i_channel;
578 for( i = 0; i < i_channel_count; i++ )
580 if( pi_channel[i] == i_channel )
583 if( i_channel_count <= i )
584 pi_channel[i_channel_count++] = i_channel;
587 /* We get an easily parsable chained list of subpictures which
588 * ends with NULL since p_subpic was initialized to NULL. */
589 for( int i = 0; i < i_channel_count; i++ )
591 const int i_channel = pi_channel[i];
592 subpicture_t *p_available_subpic[VOUT_MAX_SUBPICTURES];
593 bool pb_available_late[VOUT_MAX_SUBPICTURES];
596 mtime_t start_date = render_subtitle_date;
597 mtime_t ephemer_subtitle_date = 0;
598 mtime_t ephemer_osd_date = 0;
599 int64_t i_ephemer_subtitle_order = INT64_MIN;
600 int64_t i_ephemer_system_order = INT64_MIN;
603 /* Select available pictures */
604 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
606 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_index];
607 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 ) )
623 const mtime_t render_date = p_current->b_subtitle ? render_subtitle_date : render_osd_date;
625 render_date < p_current->i_start )
627 /* Too early, come back next monday */
631 mtime_t *pi_ephemer_date = p_current->b_subtitle ? &ephemer_subtitle_date : &ephemer_osd_date;
632 int64_t *pi_ephemer_order = p_current->b_subtitle ? &i_ephemer_subtitle_order : &i_ephemer_system_order;
633 if( p_current->i_start >= *pi_ephemer_date )
635 *pi_ephemer_date = p_current->i_start;
636 if( p_current->i_order > *pi_ephemer_order )
637 *pi_ephemer_order = p_current->i_order;
640 b_stop_valid = !p_current->b_ephemer || p_current->i_stop > p_current->i_start;
642 b_late = b_stop_valid && p_current->i_stop <= render_date;
644 /* start_date will be used for correct automatic overlap support
645 * in case picture that should not be displayed anymore (display_time)
646 * overlap with a picture to be displayed (p_current->i_start) */
647 if( p_current->b_subtitle && !b_late && !p_current->b_ephemer )
648 start_date = p_current->i_start;
651 p_available_subpic[i_available] = p_current;
652 pb_available_late[i_available] = b_late;
656 /* Only forced old picture display at the transition */
657 if( start_date < p_sys->i_last_sort_date )
658 start_date = p_sys->i_last_sort_date;
659 if( start_date <= 0 )
660 start_date = INT64_MAX;
662 /* Select pictures to be displayed */
663 for( i_index = 0; i_index < i_available; i_index++ )
665 subpicture_t *p_current = p_available_subpic[i_index];
666 bool b_late = pb_available_late[i_index];
668 const mtime_t stop_date = p_current->b_subtitle ? __MAX( start_date, p_sys->i_last_sort_date ) : render_osd_date;
669 const mtime_t ephemer_date = p_current->b_subtitle ? ephemer_subtitle_date : ephemer_osd_date;
670 const int64_t i_ephemer_order = p_current->b_subtitle ? i_ephemer_subtitle_order : i_ephemer_system_order;
672 /* Destroy late and obsolete ephemer subpictures */
673 bool b_rejet = b_late && p_current->i_stop <= stop_date;
674 if( p_current->b_ephemer )
676 if( p_current->i_start < ephemer_date )
678 else if( p_current->i_start == ephemer_date &&
679 p_current->i_order < i_ephemer_order )
684 SpuHeapDeleteSubpicture( &p_sys->heap, p_current );
686 SubpictureChain( &p_subpic, p_current );
690 p_sys->i_last_sort_date = render_subtitle_date;
691 vlc_mutex_unlock( &p_sys->lock );
696 void spu_OffsetSubtitleDate( spu_t *p_spu, mtime_t i_duration )
698 spu_private_t *p_sys = p_spu->p;
700 vlc_mutex_lock( &p_sys->lock );
701 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
703 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i];
704 subpicture_t *p_current = p_entry->p_subpicture;
706 if( p_current && p_current->b_subtitle )
708 if( p_current->i_start > 0 )
709 p_current->i_start += i_duration;
710 if( p_current->i_stop > 0 )
711 p_current->i_stop += i_duration;
714 vlc_mutex_unlock( &p_sys->lock );
717 int spu_RegisterChannel( spu_t *p_spu )
719 spu_private_t *p_sys = p_spu->p;
721 vlc_mutex_lock( &p_sys->lock );
722 int i_channel = p_sys->i_channel++;
723 vlc_mutex_unlock( &p_sys->lock );
728 void spu_ClearChannel( spu_t *p_spu, int i_channel )
730 spu_private_t *p_sys = p_spu->p;
732 vlc_mutex_lock( &p_sys->lock );
734 for( int i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
736 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_subpic];
737 subpicture_t *p_subpic = p_entry->p_subpicture;
741 if( p_subpic->i_channel != i_channel && ( i_channel != -1 || p_subpic->i_channel == SPU_DEFAULT_CHANNEL ) )
744 /* You cannot delete subpicture outside of spu_SortSubpictures */
745 p_entry->b_reject = true;
748 vlc_mutex_unlock( &p_sys->lock );
751 void spu_ChangeFilters( spu_t *p_spu, const char *psz_filters )
753 spu_private_t *p_sys = p_spu->p;
755 vlc_mutex_lock( &p_sys->lock );
757 free( p_sys->psz_chain_update );
758 p_sys->psz_chain_update = strdup( psz_filters );
760 vlc_mutex_unlock( &p_sys->lock );
763 void spu_ChangeMargin( spu_t *p_spu, int i_margin )
765 spu_private_t *p_sys = p_spu->p;
767 vlc_mutex_lock( &p_sys->lock );
768 p_sys->i_margin = i_margin;
769 vlc_mutex_unlock( &p_sys->lock );
772 /*****************************************************************************
773 * subpicture_t allocation
774 *****************************************************************************/
775 struct subpicture_private_t
781 subpicture_t *subpicture_New( const subpicture_updater_t *p_upd )
783 subpicture_t *p_subpic = calloc( 1, sizeof(*p_subpic) );
787 p_subpic->i_order = 0;
788 p_subpic->b_absolute = true;
789 p_subpic->b_fade = false;
790 p_subpic->b_subtitle = false;
791 p_subpic->i_alpha = 0xFF;
792 p_subpic->p_region = NULL;
796 subpicture_private_t *p_private = malloc( sizeof(*p_private) );
802 video_format_Init( &p_private->src, 0 );
803 video_format_Init( &p_private->dst, 0 );
805 p_subpic->updater = *p_upd;
806 p_subpic->p_private = p_private;
810 p_subpic->p_private = NULL;
812 p_subpic->updater.pf_validate = NULL;
813 p_subpic->updater.pf_update = NULL;
814 p_subpic->updater.pf_destroy = NULL;
815 p_subpic->updater.p_sys = NULL;
820 void subpicture_Delete( subpicture_t *p_subpic )
822 subpicture_region_ChainDelete( p_subpic->p_region );
823 p_subpic->p_region = NULL;
825 if( p_subpic->updater.pf_destroy )
826 p_subpic->updater.pf_destroy( p_subpic );
828 free( p_subpic->p_private );
832 static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic )
834 p_subpic->p_next = *pp_head;
839 subpicture_t *subpicture_NewFromPicture( vlc_object_t *p_obj,
840 picture_t *p_picture, vlc_fourcc_t i_chroma )
843 video_format_t fmt_in = p_picture->format;
846 video_format_t fmt_out;
848 fmt_out.i_chroma = i_chroma;
851 image_handler_t *p_image = image_HandlerCreate( p_obj );
855 picture_t *p_pip = image_Convert( p_image, p_picture, &fmt_in, &fmt_out );
857 image_HandlerDelete( p_image );
862 subpicture_t *p_subpic = subpicture_New( NULL );
865 picture_Release( p_pip );
869 p_subpic->i_original_picture_width = fmt_out.i_width;
870 p_subpic->i_original_picture_height = fmt_out.i_height;
873 fmt_out.i_sar_den = 0;
875 p_subpic->p_region = subpicture_region_New( &fmt_out );
876 if( p_subpic->p_region )
878 picture_Release( p_subpic->p_region->p_picture );
879 p_subpic->p_region->p_picture = p_pip;
883 picture_Release( p_pip );
888 static void SubpictureUpdate( subpicture_t *p_subpicture,
889 const video_format_t *p_fmt_src,
890 const video_format_t *p_fmt_dst,
893 subpicture_updater_t *p_upd = &p_subpicture->updater;
894 subpicture_private_t *p_private = p_subpicture->p_private;
896 if( !p_upd->pf_validate )
898 if( !p_upd->pf_validate( p_subpicture,
899 !video_format_IsSimilar( p_fmt_src,
900 &p_private->src ), p_fmt_src,
901 !video_format_IsSimilar( p_fmt_dst,
902 &p_private->dst ), p_fmt_dst,
906 subpicture_region_ChainDelete( p_subpicture->p_region );
907 p_subpicture->p_region = NULL;
909 p_upd->pf_update( p_subpicture, p_fmt_src, p_fmt_dst, i_ts );
911 video_format_Clean( &p_private->src );
912 video_format_Clean( &p_private->dst );
914 video_format_Copy( &p_private->src, p_fmt_src );
915 video_format_Copy( &p_private->dst, p_fmt_dst );
918 /*****************************************************************************
919 * subpicture_region_t allocation
920 *****************************************************************************/
921 subpicture_region_t *subpicture_region_New( const video_format_t *p_fmt )
923 subpicture_region_t *p_region = calloc( 1, sizeof(*p_region ) );
927 p_region->fmt = *p_fmt;
928 p_region->fmt.p_palette = NULL;
929 if( p_fmt->i_chroma == VLC_CODEC_YUVP )
931 p_region->fmt.p_palette = calloc( 1, sizeof(*p_region->fmt.p_palette) );
932 if( p_fmt->p_palette )
933 *p_region->fmt.p_palette = *p_fmt->p_palette;
935 p_region->i_alpha = 0xff;
936 p_region->p_next = NULL;
937 p_region->p_private = NULL;
938 p_region->psz_text = NULL;
939 p_region->p_style = NULL;
940 p_region->p_picture = NULL;
942 if( p_fmt->i_chroma == VLC_CODEC_TEXT )
945 p_region->p_picture = picture_NewFromFormat( p_fmt );
946 if( !p_region->p_picture )
948 free( p_region->fmt.p_palette );
957 void subpicture_region_Delete( subpicture_region_t *p_region )
962 if( p_region->p_private )
963 SpuRegionPrivateDelete( p_region->p_private );
965 if( p_region->p_picture )
966 picture_Release( p_region->p_picture );
968 free( p_region->fmt.p_palette );
970 free( p_region->psz_text );
971 free( p_region->psz_html );
972 if( p_region->p_style )
973 text_style_Delete( p_region->p_style );
978 void subpicture_region_ChainDelete( subpicture_region_t *p_head )
982 subpicture_region_t *p_next = p_head->p_next;
984 subpicture_region_Delete( p_head );
992 /*****************************************************************************
994 *****************************************************************************/
995 static void SpuHeapInit( spu_heap_t *p_heap )
997 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
999 spu_heap_entry_t *e = &p_heap->p_entry[i];
1001 e->p_subpicture = NULL;
1002 e->b_reject = false;
1006 static int SpuHeapPush( spu_heap_t *p_heap, subpicture_t *p_subpic )
1008 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
1010 spu_heap_entry_t *e = &p_heap->p_entry[i];
1012 if( e->p_subpicture )
1015 e->p_subpicture = p_subpic;
1016 e->b_reject = false;
1019 return VLC_EGENERIC;
1022 static void SpuHeapDeleteAt( spu_heap_t *p_heap, int i_index )
1024 spu_heap_entry_t *e = &p_heap->p_entry[i_index];
1026 if( e->p_subpicture )
1027 subpicture_Delete( e->p_subpicture );
1029 e->p_subpicture = NULL;
1032 static int SpuHeapDeleteSubpicture( spu_heap_t *p_heap, subpicture_t *p_subpic )
1034 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
1036 spu_heap_entry_t *e = &p_heap->p_entry[i];
1038 if( e->p_subpicture != p_subpic )
1041 SpuHeapDeleteAt( p_heap, i );
1044 return VLC_EGENERIC;
1047 static void SpuHeapClean( spu_heap_t *p_heap )
1049 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
1051 spu_heap_entry_t *e = &p_heap->p_entry[i];
1052 if( e->p_subpicture )
1053 subpicture_Delete( e->p_subpicture );
1057 static subpicture_region_private_t *SpuRegionPrivateNew( video_format_t *p_fmt )
1059 subpicture_region_private_t *p_private = malloc( sizeof(*p_private) );
1064 p_private->fmt = *p_fmt;
1065 if( p_fmt->p_palette )
1067 p_private->fmt.p_palette = malloc( sizeof(*p_private->fmt.p_palette) );
1068 if( p_private->fmt.p_palette )
1069 *p_private->fmt.p_palette = *p_fmt->p_palette;
1071 p_private->p_picture = NULL;
1075 static void SpuRegionPrivateDelete( subpicture_region_private_t *p_private )
1077 if( p_private->p_picture )
1078 picture_Release( p_private->p_picture );
1079 free( p_private->fmt.p_palette );
1083 static void FilterRelease( filter_t *p_filter )
1085 if( p_filter->p_module )
1086 module_unneed( p_filter, p_filter->p_module );
1087 if( p_filter->p_owner )
1088 free( p_filter->p_owner );
1090 vlc_object_release( p_filter );
1093 static void SpuRenderCreateAndLoadText( spu_t *p_spu )
1097 assert( !p_spu->p->p_text );
1100 p_text = vlc_custom_create( p_spu, sizeof(filter_t),
1101 VLC_OBJECT_GENERIC, "spu text" );
1105 p_text->p_owner = xmalloc( sizeof(*p_text->p_owner) );
1106 p_text->p_owner->p_spu = p_spu;
1108 es_format_Init( &p_text->fmt_in, VIDEO_ES, 0 );
1110 es_format_Init( &p_text->fmt_out, VIDEO_ES, 0 );
1111 p_text->fmt_out.video.i_width =
1112 p_text->fmt_out.video.i_visible_width = 32;
1113 p_text->fmt_out.video.i_height =
1114 p_text->fmt_out.video.i_visible_height = 32;
1116 p_text->pf_get_attachments = spu_get_attachments;
1118 vlc_object_attach( p_text, p_spu );
1120 /* FIXME TOCHECK shouldn't module_need( , , psz_modulename, false ) do the
1121 * same than these 2 calls ? */
1122 char *psz_modulename = var_CreateGetString( p_spu, "text-renderer" );
1123 if( psz_modulename && *psz_modulename )
1125 p_text->p_module = module_need( p_text, "text renderer",
1126 psz_modulename, true );
1128 free( psz_modulename );
1130 if( !p_text->p_module )
1131 p_text->p_module = module_need( p_text, "text renderer", NULL, false );
1133 /* Create a few variables used for enhanced text rendering */
1134 var_Create( p_text, "spu-duration", VLC_VAR_TIME );
1135 var_Create( p_text, "spu-elapsed", VLC_VAR_TIME );
1136 var_Create( p_text, "text-rerender", VLC_VAR_BOOL );
1137 var_Create( p_text, "scale", VLC_VAR_INTEGER );
1140 static filter_t *CreateAndLoadScale( vlc_object_t *p_obj,
1141 vlc_fourcc_t i_src_chroma, vlc_fourcc_t i_dst_chroma,
1146 p_scale = vlc_custom_create( p_obj, sizeof(filter_t),
1147 VLC_OBJECT_GENERIC, "scale" );
1151 es_format_Init( &p_scale->fmt_in, VIDEO_ES, 0 );
1152 p_scale->fmt_in.video.i_chroma = i_src_chroma;
1153 p_scale->fmt_in.video.i_width =
1154 p_scale->fmt_in.video.i_height = 32;
1156 es_format_Init( &p_scale->fmt_out, VIDEO_ES, 0 );
1157 p_scale->fmt_out.video.i_chroma = i_dst_chroma;
1158 p_scale->fmt_out.video.i_width =
1159 p_scale->fmt_out.video.i_height = b_resize ? 16 : 32;
1161 p_scale->pf_video_buffer_new = spu_new_video_buffer;
1162 p_scale->pf_video_buffer_del = spu_del_video_buffer;
1164 vlc_object_attach( p_scale, p_obj );
1165 p_scale->p_module = module_need( p_scale, "video filter2", NULL, false );
1169 static void SpuRenderCreateAndLoadScale( spu_t *p_spu )
1171 assert( !p_spu->p->p_scale );
1172 assert( !p_spu->p->p_scale_yuvp );
1173 /* XXX p_spu->p_scale is used for all conversion/scaling except yuvp to
1175 p_spu->p->p_scale = CreateAndLoadScale( VLC_OBJECT(p_spu),
1176 VLC_CODEC_YUVA, VLC_CODEC_YUVA, true );
1177 /* This one is used for YUVP to YUVA/RGBA without scaling
1178 * FIXME rename it */
1179 p_spu->p->p_scale_yuvp = CreateAndLoadScale( VLC_OBJECT(p_spu),
1180 VLC_CODEC_YUVP, VLC_CODEC_YUVA, false );
1183 static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
1184 subpicture_t *p_subpic, subpicture_region_t *p_region,
1185 int i_min_scale_ratio, mtime_t render_date )
1187 filter_t *p_text = p_spu->p->p_text;
1189 assert( p_region->fmt.i_chroma == VLC_CODEC_TEXT );
1191 if( !p_text || !p_text->p_module )
1194 /* Setup 3 variables which can be used to render
1195 * time-dependent text (and effects). The first indicates
1196 * the total amount of time the text will be on screen,
1197 * the second the amount of time it has already been on
1198 * screen (can be a negative value as text is layed out
1199 * before it is rendered) and the third is a feedback
1200 * variable from the renderer - if the renderer sets it
1201 * then this particular text is time-dependent, eg. the
1202 * visual progress bar inside the text in karaoke and the
1203 * text needs to be rendered multiple times in order for
1204 * the effect to work - we therefore need to return the
1205 * region to its original state at the end of the loop,
1206 * instead of leaving it in YUVA or YUVP.
1207 * Any renderer which is unaware of how to render
1208 * time-dependent text can happily ignore the variables
1209 * and render the text the same as usual - it should at
1210 * least show up on screen, but the effect won't change
1211 * the text over time.
1213 var_SetTime( p_text, "spu-duration", p_subpic->i_stop - p_subpic->i_start );
1214 var_SetTime( p_text, "spu-elapsed", render_date );
1215 var_SetBool( p_text, "text-rerender", false );
1216 var_SetInteger( p_text, "scale", i_min_scale_ratio );
1218 if( p_text->pf_render_html && p_region->psz_html )
1220 p_text->pf_render_html( p_text, p_region, p_region );
1222 else if( p_text->pf_render_text )
1224 p_text->pf_render_text( p_text, p_region, p_region );
1226 *pb_rerender_text = var_GetBool( p_text, "text-rerender" );
1229 p_region->i_align |= SUBPICTURE_RENDERED;
1233 * A few scale functions helpers.
1235 static spu_scale_t spu_scale_create( int w, int h )
1237 spu_scale_t s = { .w = w, .h = h };
1244 static spu_scale_t spu_scale_unit( void )
1246 return spu_scale_create( SCALE_UNIT, SCALE_UNIT );
1248 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd )
1250 return spu_scale_create( wn * SCALE_UNIT / wd,
1251 hn * SCALE_UNIT / hd );
1253 static int spu_scale_w( int v, const spu_scale_t s )
1255 return v * s.w / SCALE_UNIT;
1257 static int spu_scale_h( int v, const spu_scale_t s )
1259 return v * s.h / SCALE_UNIT;
1261 static int spu_invscale_w( int v, const spu_scale_t s )
1263 return v * SCALE_UNIT / s.w;
1265 static int spu_invscale_h( int v, const spu_scale_t s )
1267 return v * SCALE_UNIT / s.h;
1271 * A few area functions helpers
1273 static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t s )
1275 spu_area_t a = { .i_x = x, .i_y = y, .i_width = w, .i_height = h, .scale = s };
1278 static spu_area_t spu_area_scaled( spu_area_t a )
1280 if( a.scale.w == SCALE_UNIT && a.scale.h == SCALE_UNIT )
1283 a.i_x = spu_scale_w( a.i_x, a.scale );
1284 a.i_y = spu_scale_h( a.i_y, a.scale );
1286 a.i_width = spu_scale_w( a.i_width, a.scale );
1287 a.i_height = spu_scale_h( a.i_height, a.scale );
1289 a.scale = spu_scale_unit();
1292 static spu_area_t spu_area_unscaled( spu_area_t a, spu_scale_t s )
1294 if( a.scale.w == s.w && a.scale.h == s.h )
1297 a = spu_area_scaled( a );
1299 a.i_x = spu_invscale_w( a.i_x, s );
1300 a.i_y = spu_invscale_h( a.i_y, s );
1302 a.i_width = spu_invscale_w( a.i_width, s );
1303 a.i_height = spu_invscale_h( a.i_height, s );
1308 static bool spu_area_overlap( spu_area_t a, spu_area_t b )
1313 a = spu_area_scaled( a );
1314 b = spu_area_scaled( b );
1316 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 ) &&
1317 __MAX( a.i_y-i_dy, b.i_y ) < __MIN( a.i_y+a.i_height+i_dy, b.i_y+b.i_height );
1321 * Avoid area overlapping
1323 static void SpuAreaFixOverlap( spu_area_t *p_dst,
1324 const spu_area_t *p_sub, int i_sub, int i_align )
1326 spu_area_t a = spu_area_scaled( *p_dst );
1327 bool b_moved = false;
1330 /* Check for overlap
1331 * XXX It is not fast O(n^2) but we should not have a lot of region */
1335 for( int i = 0; i < i_sub; i++ )
1337 spu_area_t sub = spu_area_scaled( p_sub[i] );
1339 if( !spu_area_overlap( a, sub ) )
1342 if( i_align & SUBPICTURE_ALIGN_TOP )
1345 int i_y = sub.i_y + sub.i_height;
1349 else if( i_align & SUBPICTURE_ALIGN_BOTTOM )
1352 int i_y = sub.i_y - a.i_height;
1358 /* TODO what to do in this case? */
1359 //fprintf( stderr, "Overlap with unsupported alignment\n" );
1369 *p_dst = spu_area_unscaled( a, p_dst->scale );
1373 static void SpuAreaFitInside( spu_area_t *p_area, const spu_area_t *p_boundary )
1375 spu_area_t a = spu_area_scaled( *p_area );
1377 const int i_error_x = (a.i_x + a.i_width) - p_boundary->i_width;
1383 const int i_error_y = (a.i_y + a.i_height) - p_boundary->i_height;
1389 *p_area = spu_area_unscaled( a, p_area->scale );
1395 static void SpuRegionPlace( int *pi_x, int *pi_y,
1396 const subpicture_t *p_subpic,
1397 const subpicture_region_t *p_region )
1399 const int i_delta_x = p_region->i_x;
1400 const int i_delta_y = p_region->i_y;
1403 assert( p_region->i_x != INT_MAX && p_region->i_y != INT_MAX );
1404 if( p_region->i_align & SUBPICTURE_ALIGN_TOP )
1408 else if( p_region->i_align & SUBPICTURE_ALIGN_BOTTOM )
1410 i_y = p_subpic->i_original_picture_height - p_region->fmt.i_height - i_delta_y;
1414 i_y = p_subpic->i_original_picture_height / 2 - p_region->fmt.i_height / 2;
1417 if( p_region->i_align & SUBPICTURE_ALIGN_LEFT )
1421 else if( p_region->i_align & SUBPICTURE_ALIGN_RIGHT )
1423 i_x = p_subpic->i_original_picture_width - p_region->fmt.i_width - i_delta_x;
1427 i_x = p_subpic->i_original_picture_width / 2 - p_region->fmt.i_width / 2;
1430 if( p_subpic->b_absolute )
1441 * This function computes the current alpha value for a given region.
1443 static int SpuRegionAlpha( subpicture_t *p_subpic, subpicture_region_t *p_region )
1445 /* Compute alpha blend value */
1446 int i_fade_alpha = 255;
1447 if( p_subpic->b_fade )
1449 mtime_t i_fade_start = ( p_subpic->i_stop +
1450 p_subpic->i_start ) / 2;
1451 mtime_t i_now = mdate();
1453 if( i_now >= i_fade_start && p_subpic->i_stop > i_fade_start )
1455 i_fade_alpha = 255 * ( p_subpic->i_stop - i_now ) /
1456 ( p_subpic->i_stop - i_fade_start );
1459 return i_fade_alpha * p_subpic->i_alpha * p_region->i_alpha / 65025;
1463 * It will render the provided region onto p_pic_dst.
1466 static void SpuRenderRegion( spu_t *p_spu,
1467 picture_t *p_pic_dst, spu_area_t *p_area,
1468 subpicture_t *p_subpic, subpicture_region_t *p_region,
1469 const spu_scale_t scale_size,
1470 const video_format_t *p_fmt,
1471 const spu_area_t *p_subtitle_area, int i_subtitle_area,
1472 mtime_t render_date )
1474 spu_private_t *p_sys = p_spu->p;
1476 video_format_t fmt_original = p_region->fmt;
1477 bool b_rerender_text = false;
1478 bool b_restore_format = false;
1482 video_format_t region_fmt;
1483 picture_t *p_region_picture;
1485 /* Invalidate area by default */
1486 *p_area = spu_area_create( 0,0, 0,0, scale_size );
1488 /* Render text region */
1489 if( p_region->fmt.i_chroma == VLC_CODEC_TEXT )
1491 const int i_min_scale_ratio = SCALE_UNIT; /* FIXME what is the right value? (scale_size is not) */
1492 SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region,
1493 i_min_scale_ratio, render_date );
1494 b_restore_format = b_rerender_text;
1496 /* Check if the rendering has failed ... */
1497 if( p_region->fmt.i_chroma == VLC_CODEC_TEXT )
1501 /* Force palette if requested
1502 * FIXME b_force_palette and b_force_crop are applied to all subpictures using palette
1503 * instead of only the right one (being the dvd spu).
1505 const bool b_using_palette = p_region->fmt.i_chroma == VLC_CODEC_YUVP;
1506 const bool b_force_palette = b_using_palette && p_sys->b_force_palette;
1507 const bool b_force_crop = b_force_palette && p_sys->b_force_crop;
1508 bool b_changed_palette = false;
1511 /* Compute the margin which is expressed in destination pixel unit
1512 * The margin is applied only to subtitle and when no forced crop is
1513 * requested (dvd menu) */
1515 if( !b_force_crop && p_subpic->b_subtitle )
1516 i_margin_y = spu_invscale_h( p_sys->i_margin, scale_size );
1518 /* Place the picture
1519 * We compute the position in the rendered size */
1520 SpuRegionPlace( &i_x_offset, &i_y_offset,
1521 p_subpic, p_region );
1523 /* Save this position for subtitle overlap support
1524 * it is really important that there are given without scale_size applied */
1525 *p_area = spu_area_create( i_x_offset, i_y_offset,
1526 p_region->fmt.i_width, p_region->fmt.i_height,
1529 /* Handle overlapping subtitles when possible */
1530 if( p_subpic->b_subtitle && !p_subpic->b_absolute )
1532 SpuAreaFixOverlap( p_area, p_subtitle_area, i_subtitle_area,
1533 p_region->i_align );
1536 /* we copy the area: for the subtitle overlap support we want
1537 * to only save the area without margin applied */
1538 spu_area_t restrained = *p_area;
1540 /* apply margin to subtitles and correct if they go over the picture edge */
1541 if( p_subpic->b_subtitle )
1542 restrained.i_y -= i_margin_y;
1544 spu_area_t display = spu_area_create( 0, 0, p_fmt->i_width, p_fmt->i_height,
1546 SpuAreaFitInside( &restrained, &display );
1548 /* Fix the position for the current scale_size */
1549 i_x_offset = spu_scale_w( restrained.i_x, restrained.scale );
1550 i_y_offset = spu_scale_h( restrained.i_y, restrained.scale );
1553 if( b_force_palette )
1555 video_palette_t *p_palette = p_region->fmt.p_palette;
1556 video_palette_t palette;
1558 /* We suppose DVD palette here */
1559 palette.i_entries = 4;
1560 for( int i = 0; i < 4; i++ )
1561 for( int j = 0; j < 4; j++ )
1562 palette.palette[i][j] = p_sys->palette[i][j];
1564 if( p_palette->i_entries == palette.i_entries )
1566 for( int i = 0; i < p_palette->i_entries; i++ )
1567 for( int j = 0; j < 4; j++ )
1568 b_changed_palette |= p_palette->palette[i][j] != palette.palette[i][j];
1572 b_changed_palette = true;
1574 *p_palette = palette;
1578 region_fmt = p_region->fmt;
1579 p_region_picture = p_region->p_picture;
1582 /* Scale from rendered size to destination size */
1583 if( p_sys->p_scale && p_sys->p_scale->p_module &&
1584 ( !b_using_palette || ( p_sys->p_scale_yuvp && p_sys->p_scale_yuvp->p_module ) ) &&
1585 ( scale_size.w != SCALE_UNIT || scale_size.h != SCALE_UNIT || b_using_palette ) )
1587 const unsigned i_dst_width = spu_scale_w( p_region->fmt.i_width, scale_size );
1588 const unsigned i_dst_height = spu_scale_h( p_region->fmt.i_height, scale_size );
1590 /* Destroy the cache if unusable */
1591 if( p_region->p_private )
1593 subpicture_region_private_t *p_private = p_region->p_private;
1594 bool b_changed = false;
1596 /* Check resize changes */
1597 if( i_dst_width != p_private->fmt.i_width ||
1598 i_dst_height != p_private->fmt.i_height )
1601 /* Check forced palette changes */
1602 if( b_changed_palette )
1607 SpuRegionPrivateDelete( p_private );
1608 p_region->p_private = NULL;
1612 /* Scale if needed into cache */
1613 if( !p_region->p_private && i_dst_width > 0 && i_dst_height > 0 )
1615 filter_t *p_scale = p_sys->p_scale;
1617 picture_t *p_picture = p_region->p_picture;
1618 picture_Hold( p_picture );
1620 /* Convert YUVP to YUVA/RGBA first for better scaling quality */
1621 if( b_using_palette )
1623 filter_t *p_scale_yuvp = p_sys->p_scale_yuvp;
1625 p_scale_yuvp->fmt_in.video = p_region->fmt;
1627 /* TODO converting to RGBA for RGB video output is better */
1628 p_scale_yuvp->fmt_out.video = p_region->fmt;
1629 p_scale_yuvp->fmt_out.video.i_chroma = VLC_CODEC_YUVA;
1631 p_picture = p_scale_yuvp->pf_video_filter( p_scale_yuvp, p_picture );
1634 /* Well we will try conversion+scaling */
1635 msg_Warn( p_spu, "%4.4s to %4.4s conversion failed",
1636 (const char*)&p_scale_yuvp->fmt_in.video.i_chroma,
1637 (const char*)&p_scale_yuvp->fmt_out.video.i_chroma );
1641 /* Conversion(except from YUVP)/Scaling */
1643 ( p_picture->format.i_width != i_dst_width ||
1644 p_picture->format.i_height != i_dst_height ) )
1646 p_scale->fmt_in.video = p_picture->format;
1647 p_scale->fmt_out.video = p_picture->format;
1649 p_scale->fmt_out.video.i_width = i_dst_width;
1650 p_scale->fmt_out.video.i_height = i_dst_height;
1652 p_scale->fmt_out.video.i_visible_width =
1653 spu_scale_w( p_region->fmt.i_visible_width, scale_size );
1654 p_scale->fmt_out.video.i_visible_height =
1655 spu_scale_h( p_region->fmt.i_visible_height, scale_size );
1657 p_picture = p_scale->pf_video_filter( p_scale, p_picture );
1659 msg_Err( p_spu, "scaling failed" );
1665 p_region->p_private = SpuRegionPrivateNew( &p_picture->format );
1666 if( p_region->p_private )
1668 p_region->p_private->p_picture = p_picture;
1669 if( !p_region->p_private->p_picture )
1671 SpuRegionPrivateDelete( p_region->p_private );
1672 p_region->p_private = NULL;
1677 picture_Release( p_picture );
1682 /* And use the scaled picture */
1683 if( p_region->p_private )
1685 region_fmt = p_region->p_private->fmt;
1686 p_region_picture = p_region->p_private->p_picture;
1690 /* Force cropping if requested */
1693 int i_crop_x = spu_scale_w( p_sys->i_crop_x, scale_size );
1694 int i_crop_y = spu_scale_h( p_sys->i_crop_y, scale_size );
1695 int i_crop_width = spu_scale_w( p_sys->i_crop_width, scale_size );
1696 int i_crop_height= spu_scale_h( p_sys->i_crop_height,scale_size );
1698 /* Find the intersection */
1699 if( i_crop_x + i_crop_width <= i_x_offset ||
1700 i_x_offset + (int)region_fmt.i_visible_width < i_crop_x ||
1701 i_crop_y + i_crop_height <= i_y_offset ||
1702 i_y_offset + (int)region_fmt.i_visible_height < i_crop_y )
1704 /* No intersection */
1705 region_fmt.i_visible_width =
1706 region_fmt.i_visible_height = 0;
1710 int i_x, i_y, i_x_end, i_y_end;
1711 i_x = __MAX( i_crop_x, i_x_offset );
1712 i_y = __MAX( i_crop_y, i_y_offset );
1713 i_x_end = __MIN( i_crop_x + i_crop_width,
1714 i_x_offset + (int)region_fmt.i_visible_width );
1715 i_y_end = __MIN( i_crop_y + i_crop_height,
1716 i_y_offset + (int)region_fmt.i_visible_height );
1718 region_fmt.i_x_offset = i_x - i_x_offset;
1719 region_fmt.i_y_offset = i_y - i_y_offset;
1720 region_fmt.i_visible_width = i_x_end - i_x;
1721 region_fmt.i_visible_height = i_y_end - i_y;
1723 i_x_offset = __MAX( i_x, 0 );
1724 i_y_offset = __MAX( i_y, 0 );
1728 /* Update the blender */
1729 if( filter_ConfigureBlend( p_spu->p->p_blend,
1730 p_fmt->i_width, p_fmt->i_height,
1732 filter_Blend( p_spu->p->p_blend,
1733 p_pic_dst, i_x_offset, i_y_offset,
1734 p_region_picture, SpuRegionAlpha( p_subpic, p_region ) ) )
1736 msg_Err( p_spu, "blending %4.4s to %4.4s failed",
1737 (char *)&p_sys->p_blend->fmt_in.video.i_chroma,
1738 (char *)&p_sys->p_blend->fmt_out.video.i_chroma );
1742 if( b_rerender_text )
1744 /* Some forms of subtitles need to be re-rendered more than
1745 * once, eg. karaoke. We therefore restore the region to its
1746 * pre-rendered state, so the next time through everything is
1749 if( p_region->p_picture )
1751 picture_Release( p_region->p_picture );
1752 p_region->p_picture = NULL;
1754 if( p_region->p_private )
1756 SpuRegionPrivateDelete( p_region->p_private );
1757 p_region->p_private = NULL;
1759 p_region->i_align &= ~SUBPICTURE_RENDERED;
1761 if( b_restore_format )
1762 p_region->fmt = fmt_original;
1766 * This function compares two 64 bits integers.
1767 * It can be used by qsort.
1769 static int IntegerCmp( int64_t i0, int64_t i1 )
1771 return i0 < i1 ? -1 : i0 > i1 ? 1 : 0;
1774 * This function compares 2 subpictures using the following properties
1775 * (ordered by priority)
1776 * 1. absolute positionning
1778 * 3. creation order (per channel)
1780 * It can be used by qsort.
1782 * XXX spu_RenderSubpictures depends heavily on this order.
1784 static int SubpictureCmp( const void *s0, const void *s1 )
1786 subpicture_t *p_subpic0 = *(subpicture_t**)s0;
1787 subpicture_t *p_subpic1 = *(subpicture_t**)s1;
1790 r = IntegerCmp( !p_subpic0->b_absolute, !p_subpic1->b_absolute );
1792 r = IntegerCmp( p_subpic0->i_start, p_subpic1->i_start );
1794 r = IntegerCmp( p_subpic0->i_channel, p_subpic1->i_channel );
1796 r = IntegerCmp( p_subpic0->i_order, p_subpic1->i_order );
1800 /*****************************************************************************
1801 * Object variables callbacks
1802 *****************************************************************************/
1804 /*****************************************************************************
1805 * UpdateSPU: update subpicture settings
1806 *****************************************************************************
1807 * This function is called from CropCallback and at initialization time, to
1808 * retrieve crop information from the input.
1809 *****************************************************************************/
1810 static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
1812 spu_private_t *p_sys = p_spu->p;
1815 vlc_mutex_lock( &p_sys->lock );
1817 p_sys->b_force_palette = false;
1818 p_sys->b_force_crop = false;
1820 if( var_Get( p_object, "highlight", &val ) || !val.b_bool )
1822 vlc_mutex_unlock( &p_sys->lock );
1826 p_sys->b_force_crop = true;
1827 p_sys->i_crop_x = var_GetInteger( p_object, "x-start" );
1828 p_sys->i_crop_y = var_GetInteger( p_object, "y-start" );
1829 p_sys->i_crop_width = var_GetInteger( p_object, "x-end" ) - p_sys->i_crop_x;
1830 p_sys->i_crop_height = var_GetInteger( p_object, "y-end" ) - p_sys->i_crop_y;
1832 if( var_Get( p_object, "menu-palette", &val ) == VLC_SUCCESS )
1834 memcpy( p_sys->palette, val.p_address, 16 );
1835 p_sys->b_force_palette = true;
1837 vlc_mutex_unlock( &p_sys->lock );
1839 msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
1840 p_sys->i_crop_x, p_sys->i_crop_y,
1841 p_sys->i_crop_width, p_sys->i_crop_height,
1842 p_sys->b_force_palette );
1845 /*****************************************************************************
1846 * CropCallback: called when the highlight properties are changed
1847 *****************************************************************************
1848 * This callback is called from the input thread when we need cropping
1849 *****************************************************************************/
1850 static int CropCallback( vlc_object_t *p_object, char const *psz_var,
1851 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1853 VLC_UNUSED(oldval); VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1855 UpdateSPU( (spu_t *)p_data, p_object );
1859 /*****************************************************************************
1860 * Buffers allocation callbacks for the filters
1861 *****************************************************************************/
1862 static int spu_get_attachments( filter_t *p_filter,
1863 input_attachment_t ***ppp_attachment,
1864 int *pi_attachment )
1866 spu_t *p_spu = p_filter->p_owner->p_spu;
1868 int i_ret = VLC_EGENERIC;
1869 if( p_spu->p->p_input )
1870 i_ret = input_Control( (input_thread_t*)p_spu->p->p_input,
1871 INPUT_GET_ATTACHMENTS,
1872 ppp_attachment, pi_attachment );
1876 static subpicture_t *sub_new_buffer( filter_t *p_filter )
1878 filter_owner_sys_t *p_sys = p_filter->p_owner;
1880 subpicture_t *p_subpicture = subpicture_New( NULL );
1882 p_subpicture->i_channel = p_sys->i_channel;
1883 return p_subpicture;
1885 static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1887 VLC_UNUSED( p_filter );
1888 subpicture_Delete( p_subpic );
1890 static picture_t *spu_new_video_buffer( filter_t *p_filter )
1892 const video_format_t *p_fmt = &p_filter->fmt_out.video;
1894 VLC_UNUSED(p_filter);
1895 return picture_NewFromFormat( p_fmt );
1897 static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_picture )
1899 VLC_UNUSED(p_filter);
1900 picture_Release( p_picture );
1903 static int SubFilterAllocationInit( filter_t *p_filter, void *p_data )
1905 spu_t *p_spu = p_data;
1907 filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
1909 return VLC_EGENERIC;
1911 p_filter->pf_sub_buffer_new = sub_new_buffer;
1912 p_filter->pf_sub_buffer_del = sub_del_buffer;
1914 p_filter->p_owner = p_sys;
1915 p_sys->i_channel = spu_RegisterChannel( p_spu );
1916 p_sys->p_spu = p_spu;
1921 static void SubFilterAllocationClean( filter_t *p_filter )
1923 filter_owner_sys_t *p_sys = p_filter->p_owner;
1925 spu_ClearChannel( p_sys->p_spu, p_sys->i_channel );
1926 free( p_filter->p_owner );