1 /*****************************************************************************
2 * vout_subpictures.c : subpicture management functions
3 *****************************************************************************
4 * Copyright (C) 2000-2007 the VideoLAN team
7 * Authors: Vincent Seguin <seguin@via.ecp.fr>
8 * Samuel Hocevar <sam@zoy.org>
9 * Gildas Bazin <gbazin@videolan.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
33 #include <vlc_common.h>
35 #include <vlc_block.h>
36 #include <vlc_filter.h>
38 #include "../libvlc.h"
43 /*****************************************************************************
45 *****************************************************************************/
46 static void UpdateSPU ( spu_t *, vlc_object_t * );
47 static int CropCallback( vlc_object_t *, char const *,
48 vlc_value_t, vlc_value_t, void * );
50 static int spu_vaControlDefault( spu_t *, int, va_list );
52 static subpicture_t *sub_new_buffer( filter_t * );
53 static void sub_del_buffer( filter_t *, subpicture_t * );
54 static subpicture_t *spu_new_buffer( filter_t * );
55 static void spu_del_buffer( filter_t *, subpicture_t * );
56 static picture_t *spu_new_video_buffer( filter_t * );
57 static void spu_del_video_buffer( filter_t *, picture_t * );
59 static int spu_ParseChain( spu_t * );
60 static int SubFilterCallback( vlc_object_t *, char const *,
61 vlc_value_t, vlc_value_t, void * );
63 static int SubFilterAllocationInit( filter_t *, void * );
64 static void SubFilterAllocationClean( filter_t * );
65 struct filter_owner_sys_t
71 #define SCALE_UNIT (1000)
74 static void SpuRenderCreateAndLoadText( spu_t *p_spu );
75 static void SpuRenderCreateAndLoadScale( spu_t *p_spu );
76 static void FilterRelease( filter_t *p_filter );
79 * Creates the subpicture unit
81 * \param p_this the parent object which creates the subpicture unit
83 spu_t *__spu_Create( vlc_object_t *p_this )
86 spu_t *p_spu = vlc_custom_create( p_this, sizeof( spu_t ),
87 VLC_OBJECT_GENERIC, "subpicture" );
89 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
91 p_spu->p_subpicture[i_index].i_status = FREE_SUBPICTURE;
94 p_spu->p_blend = NULL;
96 p_spu->p_scale = NULL;
97 p_spu->p_scale_yuvp = NULL;
98 p_spu->pf_control = spu_vaControlDefault;
100 /* Register the default subpicture channel */
101 p_spu->i_channel = 2;
103 vlc_mutex_init( &p_spu->subpicture_lock );
105 vlc_object_attach( p_spu, p_this );
107 p_spu->p_chain = filter_chain_New( p_spu, "sub filter", false,
108 SubFilterAllocationInit,
109 SubFilterAllocationClean,
112 /* Load text and scale module */
113 SpuRenderCreateAndLoadText( p_spu );
114 SpuRenderCreateAndLoadScale( p_spu );
120 * Initialise the subpicture unit
122 * \param p_spu the subpicture unit object
124 int spu_Init( spu_t *p_spu )
128 /* If the user requested a sub margin, we force the position. */
129 var_Create( p_spu, "sub-margin", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
130 var_Get( p_spu, "sub-margin", &val );
131 p_spu->i_margin = val.i_int;
133 var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
134 var_AddCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
136 spu_ParseChain( p_spu );
141 int spu_ParseChain( spu_t *p_spu )
143 char *psz_parser = var_GetString( p_spu, "sub-filter" );
144 if( filter_chain_AppendFromString( p_spu->p_chain, psz_parser ) < 0 )
155 * Destroy the subpicture unit
157 * \param p_this the parent object which destroys the subpicture unit
159 void spu_Destroy( spu_t *p_spu )
163 /* Destroy all remaining subpictures */
164 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
166 if( p_spu->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
168 spu_DestroySubpicture( p_spu, &p_spu->p_subpicture[i_index] );
173 FilterRelease( p_spu->p_blend );
176 FilterRelease( p_spu->p_text );
178 if( p_spu->p_scale_yuvp )
179 FilterRelease( p_spu->p_scale_yuvp );
182 FilterRelease( p_spu->p_scale );
184 filter_chain_Delete( p_spu->p_chain );
186 vlc_mutex_destroy( &p_spu->subpicture_lock );
187 vlc_object_release( p_spu );
191 * Attach/Detach the SPU from any input
193 * \param p_this the object in which to destroy the subpicture unit
194 * \param b_attach to select attach or detach
196 void spu_Attach( spu_t *p_spu, vlc_object_t *p_this, bool b_attach )
198 vlc_object_t *p_input;
200 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
201 if( !p_input ) return;
205 UpdateSPU( p_spu, VLC_OBJECT(p_input) );
206 var_AddCallback( p_input, "highlight", CropCallback, p_spu );
207 vlc_object_release( p_input );
211 /* Delete callback */
212 var_DelCallback( p_input, "highlight", CropCallback, p_spu );
213 vlc_object_release( p_input );
219 static void RegionPictureRelease( picture_t *p_picture )
221 if( --p_picture->i_refcount > 0 )
224 assert( p_picture->i_refcount == 0 );
225 free( p_picture->p_q );
226 free( p_picture->p_data_orig );
227 free( p_picture->p_sys );
231 * Create a subpicture region
233 * \param p_this vlc_object_t
234 * \param p_fmt the format that this subpicture region should have
236 subpicture_region_t *__spu_CreateRegion( vlc_object_t *p_this,
237 video_format_t *p_fmt )
239 subpicture_region_t *p_region = calloc( 1, sizeof(*p_region ) );
243 /* FIXME is that *really* wanted? */
244 if( p_fmt->i_chroma == VLC_FOURCC('Y','U','V','P') )
245 p_fmt->p_palette = calloc( 1, sizeof(video_palette_t) );
247 p_fmt->p_palette = NULL; /* XXX and that above all? */
249 p_region->fmt = *p_fmt;
250 p_region->i_alpha = 0xff;
251 p_region->p_next = NULL;
252 p_region->p_cache = NULL;
253 p_region->psz_text = NULL;
254 p_region->p_style = NULL;
256 if( p_fmt->i_chroma == VLC_FOURCC('T','E','X','T') )
259 vout_AllocatePicture( p_this, &p_region->picture, p_fmt->i_chroma,
260 p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
262 if( !p_region->picture.i_planes )
264 free( p_fmt->p_palette );
269 p_region->picture.i_refcount = 1;
270 p_region->picture.pf_release = RegionPictureRelease;
276 * Destroy a subpicture region
278 * \param p_this vlc_object_t
279 * \param p_region the subpicture region to destroy
281 void __spu_DestroyRegion( vlc_object_t *p_this, subpicture_region_t *p_region )
286 picture_Release( &p_region->picture );
288 free( p_region->fmt.p_palette );
289 if( p_region->p_cache )
290 __spu_DestroyRegion( p_this, p_region->p_cache );
292 free( p_region->psz_text );
293 free( p_region->psz_html );
294 //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
299 * Display a subpicture
301 * Remove the reservation flag of a subpicture, which will cause it to be
303 * \param p_spu the subpicture unit object
304 * \param p_subpic the subpicture to display
306 void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
308 /* Check if status is valid */
309 if( p_subpic->i_status != RESERVED_SUBPICTURE )
311 msg_Err( p_spu, "subpicture %p has invalid status #%d",
312 p_subpic, p_subpic->i_status );
315 /* Remove reservation flag */
316 p_subpic->i_status = READY_SUBPICTURE;
318 if( p_subpic->i_channel == DEFAULT_CHAN )
320 p_subpic->i_channel = 0xFFFF;
321 spu_Control( p_spu, SPU_CHANNEL_CLEAR, DEFAULT_CHAN );
322 p_subpic->i_channel = DEFAULT_CHAN;
327 * Allocate a subpicture in the spu heap.
329 * This function create a reserved subpicture in the spu heap.
330 * A null pointer is returned if the function fails. This method provides an
331 * already allocated zone of memory in the spu data fields. It needs locking
332 * since several pictures can be created by several producers threads.
333 * \param p_spu the subpicture unit in which to create the subpicture
334 * \return NULL on error, a reserved subpicture otherwise
336 subpicture_t *spu_CreateSubpicture( spu_t *p_spu )
338 int i_subpic; /* subpicture index */
339 subpicture_t * p_subpic = NULL; /* first free subpicture */
342 vlc_mutex_lock( &p_spu->subpicture_lock );
345 * Look for an empty place
348 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
350 if( p_spu->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE )
352 /* Subpicture is empty and ready for allocation */
353 p_subpic = &p_spu->p_subpicture[i_subpic];
354 p_spu->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
359 /* If no free subpicture could be found */
360 if( p_subpic == NULL )
362 msg_Err( p_spu, "subpicture heap is full" );
363 vlc_mutex_unlock( &p_spu->subpicture_lock );
367 /* Copy subpicture information, set some default values */
368 memset( p_subpic, 0, sizeof(subpicture_t) );
369 p_subpic->i_status = RESERVED_SUBPICTURE;
370 p_subpic->b_absolute = true;
371 p_subpic->b_fade = false;
372 p_subpic->b_subtitle = false;
373 p_subpic->i_alpha = 0xFF;
374 p_subpic->p_region = NULL;
375 p_subpic->pf_render = NULL;
376 p_subpic->pf_destroy = NULL;
377 p_subpic->p_sys = NULL;
378 vlc_mutex_unlock( &p_spu->subpicture_lock );
380 p_subpic->pf_create_region = __spu_CreateRegion;
381 p_subpic->pf_destroy_region = __spu_DestroyRegion;
387 * Remove a subpicture from the heap
389 * This function frees a previously reserved subpicture.
390 * It is meant to be used when the construction of a picture aborted.
391 * This function does not need locking since reserved subpictures are ignored
394 void spu_DestroySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
397 vlc_mutex_lock( &p_spu->subpicture_lock );
399 /* There can be race conditions so we need to check the status */
400 if( p_subpic->i_status == FREE_SUBPICTURE )
402 vlc_mutex_unlock( &p_spu->subpicture_lock );
406 /* Check if status is valid */
407 if( ( p_subpic->i_status != RESERVED_SUBPICTURE )
408 && ( p_subpic->i_status != READY_SUBPICTURE ) )
410 msg_Err( p_spu, "subpicture %p has invalid status %d",
411 p_subpic, p_subpic->i_status );
414 while( p_subpic->p_region )
416 subpicture_region_t *p_region = p_subpic->p_region;
417 p_subpic->p_region = p_region->p_next;
418 spu_DestroyRegion( p_spu, p_region );
421 if( p_subpic->pf_destroy )
423 p_subpic->pf_destroy( p_subpic );
426 p_subpic->i_status = FREE_SUBPICTURE;
428 vlc_mutex_unlock( &p_spu->subpicture_lock );
431 static void FilterRelease( filter_t *p_filter )
433 if( p_filter->p_module )
434 module_Unneed( p_filter, p_filter->p_module );
436 vlc_object_detach( p_filter );
437 vlc_object_release( p_filter );
440 static void SpuRenderCreateBlend( spu_t *p_spu, vlc_fourcc_t i_chroma, int i_aspect )
444 assert( !p_spu->p_blend );
447 p_blend = vlc_custom_create( p_spu, sizeof(filter_t),
448 VLC_OBJECT_GENERIC, "blend" );
452 es_format_Init( &p_blend->fmt_in, VIDEO_ES, 0 );
454 es_format_Init( &p_blend->fmt_out, VIDEO_ES, 0 );
455 p_blend->fmt_out.video.i_x_offset = 0;
456 p_blend->fmt_out.video.i_y_offset = 0;
457 p_blend->fmt_out.video.i_chroma = i_chroma;
458 p_blend->fmt_out.video.i_aspect = i_aspect;
460 /* The blend module will be loaded when needed with the real
462 p_blend->p_module = NULL;
465 vlc_object_attach( p_blend, p_spu );
467 static void SpuRenderUpdateBlend( spu_t *p_spu, int i_out_width, int i_out_height, const video_format_t *p_in_fmt )
469 filter_t *p_blend = p_spu->p_blend;
474 if( p_blend->p_module && p_blend->fmt_in.video.i_chroma != p_in_fmt->i_chroma )
476 /* The chroma is not the same, we need to reload the blend module
477 * XXX to match the old behaviour just test !p_blend->fmt_in.video.i_chroma */
478 module_Unneed( p_blend, p_blend->p_module );
479 p_blend->p_module = NULL;
483 p_blend->fmt_in.video = *p_in_fmt;
486 p_blend->fmt_out.video.i_width =
487 p_blend->fmt_out.video.i_visible_width = i_out_width;
488 p_blend->fmt_out.video.i_height =
489 p_blend->fmt_out.video.i_visible_height = i_out_height;
492 if( !p_blend->p_module )
493 p_blend->p_module = module_Need( p_blend, "video blending", 0, 0 );
495 static void SpuRenderCreateAndLoadText( spu_t *p_spu )
499 assert( !p_spu->p_text );
502 p_text = vlc_custom_create( p_spu, sizeof(filter_t),
503 VLC_OBJECT_GENERIC, "spu text" );
507 es_format_Init( &p_text->fmt_in, VIDEO_ES, 0 );
509 es_format_Init( &p_text->fmt_out, VIDEO_ES, 0 );
510 p_text->fmt_out.video.i_width =
511 p_text->fmt_out.video.i_visible_width = 32;
512 p_text->fmt_out.video.i_height =
513 p_text->fmt_out.video.i_visible_height = 32;
515 p_text->pf_sub_buffer_new = spu_new_buffer;
516 p_text->pf_sub_buffer_del = spu_del_buffer;
518 vlc_object_attach( p_text, p_spu );
520 /* FIXME TOCHECK shouldn't module_Need( , , psz_modulename, false ) do the
521 * same than these 2 calls ? */
522 char *psz_modulename = var_CreateGetString( p_spu, "text-renderer" );
523 if( psz_modulename && *psz_modulename )
525 p_text->p_module = module_Need( p_text, "text renderer",
526 psz_modulename, true );
528 free( psz_modulename );
530 if( !p_text->p_module )
531 p_text->p_module = module_Need( p_text, "text renderer", NULL, false );
534 static filter_t *CreateAndLoadScale( vlc_object_t *p_obj, vlc_fourcc_t i_chroma )
538 p_scale = vlc_custom_create( p_obj, sizeof(filter_t),
539 VLC_OBJECT_GENERIC, "scale" );
543 es_format_Init( &p_scale->fmt_in, VIDEO_ES, 0 );
544 p_scale->fmt_in.video.i_chroma = i_chroma;
545 p_scale->fmt_in.video.i_width =
546 p_scale->fmt_in.video.i_height = 32;
548 es_format_Init( &p_scale->fmt_out, VIDEO_ES, 0 );
549 p_scale->fmt_out.video.i_chroma = i_chroma;
550 p_scale->fmt_out.video.i_width =
551 p_scale->fmt_out.video.i_height = 16;
553 p_scale->pf_vout_buffer_new = spu_new_video_buffer;
554 p_scale->pf_vout_buffer_del = spu_del_video_buffer;
556 vlc_object_attach( p_scale, p_obj );
557 p_scale->p_module = module_Need( p_scale, "video filter2", 0, 0 );
561 static void SpuRenderCreateAndLoadScale( spu_t *p_spu )
563 /* FIXME: We'll also be using it for YUVA and RGBA blending ... */
565 assert( !p_spu->p_scale );
566 assert( !p_spu->p_scale_yuvp );
567 p_spu->p_scale = CreateAndLoadScale( VLC_OBJECT(p_spu), VLC_FOURCC('Y','U','V','A') );
568 p_spu->p_scale_yuvp = p_spu->p_scale_yuvp = CreateAndLoadScale( VLC_OBJECT(p_spu), VLC_FOURCC('Y','U','V','P') );
571 static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
572 subpicture_t *p_subpic, subpicture_region_t *p_region, int i_min_scale_ratio )
574 assert( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') );
576 if( !p_spu->p_text || !p_spu->p_text->p_module )
579 /* Setup 3 variables which can be used to render
580 * time-dependent text (and effects). The first indicates
581 * the total amount of time the text will be on screen,
582 * the second the amount of time it has already been on
583 * screen (can be a negative value as text is layed out
584 * before it is rendered) and the third is a feedback
585 * variable from the renderer - if the renderer sets it
586 * then this particular text is time-dependent, eg. the
587 * visual progress bar inside the text in karaoke and the
588 * text needs to be rendered multiple times in order for
589 * the effect to work - we therefore need to return the
590 * region to its original state at the end of the loop,
591 * instead of leaving it in YUVA or YUVP.
592 * Any renderer which is unaware of how to render
593 * time-dependent text can happily ignore the variables
594 * and render the text the same as usual - it should at
595 * least show up on screen, but the effect won't change
596 * the text over time.
599 /* FIXME why these variables are recreated every time and not
600 * when text renderer module was created ? */
601 var_Create( p_spu->p_text, "spu-duration", VLC_VAR_TIME );
602 var_Create( p_spu->p_text, "spu-elapsed", VLC_VAR_TIME );
603 var_Create( p_spu->p_text, "text-rerender", VLC_VAR_BOOL );
604 var_Create( p_spu->p_text, "scale", VLC_VAR_INTEGER );
606 var_SetTime( p_spu->p_text, "spu-duration", p_subpic->i_stop - p_subpic->i_start );
607 var_SetTime( p_spu->p_text, "spu-elapsed", mdate() - p_subpic->i_start );
608 var_SetBool( p_spu->p_text, "text-rerender", false );
609 var_SetInteger( p_spu->p_text, "scale", i_min_scale_ratio );
611 if( p_spu->p_text->pf_render_html && p_region->psz_html )
613 p_spu->p_text->pf_render_html( p_spu->p_text,
614 p_region, p_region );
616 else if( p_spu->p_text->pf_render_text )
618 p_spu->p_text->pf_render_text( p_spu->p_text,
619 p_region, p_region );
621 *pb_rerender_text = var_GetBool( p_spu->p_text, "text-rerender" );
623 var_Destroy( p_spu->p_text, "spu-duration" );
624 var_Destroy( p_spu->p_text, "spu-elapsed" );
625 var_Destroy( p_spu->p_text, "text-rerender" );
626 var_Destroy( p_spu->p_text, "scale" );
629 p_region->i_align |= SUBPICTURE_RENDERED;
633 * A few scale functions helpers.
641 static spu_scale_t spu_scale_create( int w, int h )
643 spu_scale_t s = { .w = w, .h = h };
650 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd )
652 return spu_scale_create( wn * SCALE_UNIT / wd,
653 hn * SCALE_UNIT / hd );
655 static int spu_scale_w( int v, const spu_scale_t s )
657 return v * s.w / SCALE_UNIT;
659 static int spu_scale_h( int v, const spu_scale_t s )
661 return v * s.h / SCALE_UNIT;
663 static int spu_invscale_h( int v, const spu_scale_t s )
665 return v * SCALE_UNIT / s.h;
671 static void SpuRegionPlace( int *pi_x, int *pi_y,
672 const subpicture_t *p_subpic,
673 const subpicture_region_t *p_region,
676 const int i_delta_x = p_region->i_x;
677 const int i_delta_y = p_region->i_y;
680 assert( p_region->i_x != INT_MAX && p_region->i_y != INT_MAX );
681 if( p_region->i_align & SUBPICTURE_ALIGN_TOP )
685 else if( p_region->i_align & SUBPICTURE_ALIGN_BOTTOM )
687 i_y = p_subpic->i_original_picture_height - p_region->fmt.i_height - i_delta_y;
691 i_y = p_subpic->i_original_picture_height / 2 - p_region->fmt.i_height / 2;
694 if( p_region->i_align & SUBPICTURE_ALIGN_LEFT )
698 else if( p_region->i_align & SUBPICTURE_ALIGN_RIGHT )
700 i_x = p_subpic->i_original_picture_width - p_region->fmt.i_width - i_delta_x;
704 i_x = p_subpic->i_original_picture_width / 2 - p_region->fmt.i_width / 2;
707 if( p_subpic->b_absolute )
713 /* Margin shifts all subpictures */
714 if( i_margin_y != 0 )
717 /* Clamp offset to not go out of the screen (when possible) */
718 const int i_error_x = (i_x + p_region->fmt.i_width) - p_subpic->i_original_picture_width;
724 const int i_error_y = (i_y + p_region->fmt.i_height) - p_subpic->i_original_picture_height;
735 * This function computes the current alpha value for a given region.
737 static int SpuRegionAlpha( subpicture_t *p_subpic, subpicture_region_t *p_region )
739 /* Compute alpha blend value */
740 int i_fade_alpha = 255;
741 if( p_subpic->b_fade )
743 mtime_t i_fade_start = ( p_subpic->i_stop +
744 p_subpic->i_start ) / 2;
745 mtime_t i_now = mdate();
747 if( i_now >= i_fade_start && p_subpic->i_stop > i_fade_start )
749 i_fade_alpha = 255 * ( p_subpic->i_stop - i_now ) /
750 ( p_subpic->i_stop - i_fade_start );
753 return i_fade_alpha * p_subpic->i_alpha * p_region->i_alpha / 65025;
756 static void SpuRenderRegion( spu_t *p_spu,
757 picture_t *p_pic_dst,
758 subpicture_t *p_subpic, subpicture_region_t *p_region,
759 const spu_scale_t scale_size,
760 const video_format_t *p_fmt )
762 video_format_t fmt_original;
763 bool b_rerender_text;
764 bool b_restore_format = false;
769 vlc_assert_locked( &p_spu->subpicture_lock );
771 fmt_original = p_region->fmt;
772 b_rerender_text = false;
773 if( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
775 const int i_min_scale_ratio = __MIN( scale_size.w, scale_size.h );
776 SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region, i_min_scale_ratio );
777 b_restore_format = b_rerender_text;
779 /* Check if the rendering has failed ... */
780 if( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
784 /* Force palette if requested
785 * FIXME b_force_palette and b_force_crop are applied to all subpictures using palette
786 * instead of only the right one (being the dvd spu).
788 const bool b_using_palette = p_region->fmt.i_chroma == VLC_FOURCC('Y','U','V','P');
789 const bool b_force_palette = b_using_palette && p_spu->b_force_palette;
790 const bool b_force_crop = b_force_palette && p_spu->b_force_crop;
793 /* Compute the margin which is expressed in destination pixel unit
794 * The margin is applied only to subtitle and when no forced crop is
795 * requested (dvd menu) */
797 if( !b_force_crop && p_subpic->b_subtitle )
798 i_margin_y = spu_invscale_h( p_spu->i_margin, scale_size );
801 * We compute the position in the rendered size */
802 SpuRegionPlace( &i_x_offset, &i_y_offset,
803 p_subpic, p_region, i_margin_y );
805 /* TODO save this position for subtitle overlap support */
807 /* Fix the position for the current scale_size */
808 i_x_offset = spu_scale_w( i_x_offset, scale_size );
809 i_y_offset = spu_scale_h( i_y_offset, scale_size );
811 if( b_force_palette )
813 /* It looks so wrong I won't comment
814 * p_palette->palette is [256][4] with a int i_entries
815 * p_spu->palette is [4][4]
817 p_region->fmt.p_palette->i_entries = 4;
818 memcpy( p_region->fmt.p_palette->palette, p_spu->palette, 4*sizeof(uint32_t) );
821 if( b_using_palette )
822 p_scale = p_spu->p_scale_yuvp;
824 p_scale = p_spu->p_scale;
826 /* Scale from rendered size to destination size */
828 ( scale_size.w != SCALE_UNIT || scale_size.h != SCALE_UNIT || b_force_palette ) )
830 const unsigned i_dst_width = spu_scale_w( p_region->fmt.i_width, scale_size );
831 const unsigned i_dst_height = spu_scale_h( p_region->fmt.i_height, scale_size );
833 /* TODO when b_using_palette is true, we should first convert it to YUVA to allow
834 * a proper rescaling */
836 /* Destroy if cache is unusable */
837 if( p_region->p_cache )
839 if( p_region->p_cache->fmt.i_width != i_dst_width ||
840 p_region->p_cache->fmt.i_height != i_dst_height ||
843 p_subpic->pf_destroy_region( VLC_OBJECT(p_spu),
845 p_region->p_cache = NULL;
849 /* Scale if needed into cache */
850 if( !p_region->p_cache )
854 p_scale->fmt_in.video = p_region->fmt;
855 p_scale->fmt_out.video = p_region->fmt;
857 if( p_scale->fmt_out.video.p_palette )
858 *p_scale->fmt_out.video.p_palette =
859 *p_region->fmt.p_palette;
861 p_scale->fmt_out.video.i_width = i_dst_width;
862 p_scale->fmt_out.video.i_height = i_dst_height;
864 p_scale->fmt_out.video.i_visible_width =
865 spu_scale_w( p_region->fmt.i_visible_width, scale_size );
866 p_scale->fmt_out.video.i_visible_height =
867 spu_scale_h( p_region->fmt.i_visible_height, scale_size );
870 p_subpic->pf_create_region( VLC_OBJECT(p_spu),
871 &p_scale->fmt_out.video );
874 if( p_scale->p_module )
876 picture_Yield( &p_region->picture );
877 p_pic = p_scale->pf_video_filter( p_scale, &p_region->picture );
881 picture_Copy( &p_region->p_cache->picture, p_pic );
882 picture_Release( p_pic );
884 p_region->p_cache->fmt = p_scale->fmt_out.video;
885 /* i_x/i_y of cached region should NOT be used. I set them to
886 * an invalid value to catch it (assert) */
887 p_region->p_cache->i_x = INT_MAX;
888 p_region->p_cache->i_y = INT_MAX;
889 p_region->p_cache->i_align = p_region->i_align;
890 p_region->p_cache->i_alpha = p_region->i_alpha;
894 msg_Err( p_spu, "scaling failed (module not loaded)" );
895 p_subpic->pf_destroy_region( VLC_OBJECT(p_spu),
897 p_region->p_cache = NULL;
901 /* And use the scaled picture */
902 if( p_region->p_cache )
904 p_region = p_region->p_cache;
905 fmt_original = p_region->fmt;
909 /* Force cropping if requested */
912 video_format_t *p_fmt = &p_region->fmt;
913 int i_crop_x = spu_scale_w( p_spu->i_crop_x, scale_size );
914 int i_crop_y = spu_scale_h( p_spu->i_crop_y, scale_size );
915 int i_crop_width = spu_scale_w( p_spu->i_crop_width, scale_size );
916 int i_crop_height= spu_scale_h( p_spu->i_crop_height,scale_size );
918 /* Find the intersection */
919 if( i_crop_x + i_crop_width <= i_x_offset ||
920 i_x_offset + (int)p_fmt->i_visible_width < i_crop_x ||
921 i_crop_y + i_crop_height <= i_y_offset ||
922 i_y_offset + (int)p_fmt->i_visible_height < i_crop_y )
924 /* No intersection */
925 p_fmt->i_visible_width = p_fmt->i_visible_height = 0;
929 int i_x, i_y, i_x_end, i_y_end;
930 i_x = __MAX( i_crop_x, i_x_offset );
931 i_y = __MAX( i_crop_y, i_y_offset );
932 i_x_end = __MIN( i_crop_x + i_crop_width,
933 i_x_offset + (int)p_fmt->i_visible_width );
934 i_y_end = __MIN( i_crop_y + i_crop_height,
935 i_y_offset + (int)p_fmt->i_visible_height );
937 p_fmt->i_x_offset = i_x - i_x_offset;
938 p_fmt->i_y_offset = i_y - i_y_offset;
939 p_fmt->i_visible_width = i_x_end - i_x;
940 p_fmt->i_visible_height = i_y_end - i_y;
942 i_x_offset = __MAX( i_x, 0 );
943 i_y_offset = __MAX( i_y, 0 );
945 b_restore_format = true;
948 /* Update the blender */
949 SpuRenderUpdateBlend( p_spu, p_fmt->i_width, p_fmt->i_height, &p_region->fmt );
951 if( p_spu->p_blend->p_module )
953 const int i_alpha = SpuRegionAlpha( p_subpic, p_region );
955 p_spu->p_blend->pf_video_blend( p_spu->p_blend, p_pic_dst,
956 &p_region->picture, i_x_offset, i_y_offset, i_alpha );
960 msg_Err( p_spu, "blending %4.4s to %4.4s failed",
961 (char *)&p_spu->p_blend->fmt_out.video.i_chroma,
962 (char *)&p_spu->p_blend->fmt_out.video.i_chroma );
966 if( b_rerender_text )
968 /* Some forms of subtitles need to be re-rendered more than
969 * once, eg. karaoke. We therefore restore the region to its
970 * pre-rendered state, so the next time through everything is
973 p_region->picture.pf_release( &p_region->picture );
974 memset( &p_region->picture, 0, sizeof( picture_t ) );
975 p_region->i_align &= ~SUBPICTURE_RENDERED;
977 if( b_restore_format )
978 p_region->fmt = fmt_original;
982 * This function renders all sub picture units in the list.
984 void spu_RenderSubpictures( spu_t *p_spu,
985 picture_t *p_pic_dst, const video_format_t *p_fmt_dst,
986 subpicture_t *p_subpic_list,
987 const video_format_t *p_fmt_src )
989 const int i_source_video_width = p_fmt_src->i_width;
990 const int i_source_video_height = p_fmt_src->i_height;
991 const mtime_t i_current_date = mdate();
993 subpicture_t *p_subpic;
996 vlc_mutex_lock( &p_spu->subpicture_lock );
998 /* Be sure we have at least 1 picture to process */
999 if( !p_subpic_list || p_subpic_list->i_status == FREE_SUBPICTURE )
1001 vlc_mutex_unlock( &p_spu->subpicture_lock );
1006 for( p_subpic = p_subpic_list;
1007 p_subpic != NULL && p_subpic->i_status != FREE_SUBPICTURE; /* Check again status (as we where unlocked) */
1008 p_subpic = p_subpic->p_next )
1011 if( p_subpic->pf_pre_render )
1012 p_subpic->pf_pre_render( p_spu, p_subpic, p_fmt_dst );
1014 if( p_subpic->pf_update_regions )
1016 video_format_t fmt_org = *p_fmt_dst;
1018 fmt_org.i_visible_width = i_source_video_width;
1020 fmt_org.i_visible_height = i_source_video_height;
1022 p_subpic->pf_update_regions( p_spu, p_subpic, &fmt_org, i_current_date );
1026 /* Create the blending module */
1027 if( !p_spu->p_blend )
1028 SpuRenderCreateBlend( p_spu, p_fmt_dst->i_chroma, p_fmt_dst->i_aspect );
1031 for( p_subpic = p_subpic_list; ; p_subpic = p_subpic->p_next )
1033 subpicture_region_t *p_region;
1035 if( !p_subpic || p_subpic->i_status == FREE_SUBPICTURE )
1038 if( !p_subpic->p_region )
1041 /* FIXME when possible use a better rendering size than source size
1042 * (max of display size and source size for example) FIXME */
1043 int i_render_width = p_subpic->i_original_picture_width;
1044 int i_render_height = p_subpic->i_original_picture_height;
1045 if( !i_render_width || !i_render_height )
1047 if( i_render_width != 0 || i_render_height != 0 )
1048 msg_Err( p_spu, "unsupported original picture size %dx%d",
1049 i_render_width, i_render_height );
1051 p_subpic->i_original_picture_width = i_render_width = i_source_video_width;
1052 p_subpic->i_original_picture_height = i_render_height = i_source_video_height;
1057 p_spu->p_text->fmt_out.video.i_width =
1058 p_spu->p_text->fmt_out.video.i_visible_width = i_render_width;
1060 p_spu->p_text->fmt_out.video.i_height =
1061 p_spu->p_text->fmt_out.video.i_visible_height = i_render_height;
1064 /* Compute scaling from picture to source size */
1065 spu_scale_t scale = spu_scale_createq( i_source_video_width, i_render_width,
1066 i_source_video_height, i_render_height );
1068 /* Update scaling from source size to display size(p_fmt_dst) */
1069 scale.w = scale.w * p_fmt_dst->i_width / i_source_video_width;
1070 scale.h = scale.h * p_fmt_dst->i_height / i_source_video_height;
1072 /* Set default subpicture aspect ratio
1073 * FIXME if we only handle 1 aspect ratio per picture, why is it set per
1075 p_region = p_subpic->p_region;
1076 if( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den )
1078 if( p_region->fmt.i_aspect != 0 )
1080 p_region->fmt.i_sar_den = p_region->fmt.i_aspect;
1081 p_region->fmt.i_sar_num = VOUT_ASPECT_FACTOR;
1085 p_region->fmt.i_sar_den = p_fmt_dst->i_sar_den;
1086 p_region->fmt.i_sar_num = p_fmt_dst->i_sar_num;
1090 /* Take care of the aspect ratio */
1091 if( p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den !=
1092 p_region->fmt.i_sar_den * p_fmt_dst->i_sar_num )
1094 /* FIXME FIXME what about region->i_x/i_y ? */
1096 (int64_t)p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den /
1097 p_region->fmt.i_sar_den / p_fmt_dst->i_sar_num;
1100 /* Render all regions */
1101 for( p_region = p_subpic->p_region; p_region != NULL; p_region = p_region->p_next )
1103 /* Check scale validity */
1104 if( scale.w <= 0 || scale.h <= 0 )
1108 SpuRenderRegion( p_spu, p_pic_dst, p_subpic, p_region,
1113 vlc_mutex_unlock( &p_spu->subpicture_lock );
1116 /*****************************************************************************
1117 * spu_SortSubpictures: find the subpictures to display
1118 *****************************************************************************
1119 * This function parses all subpictures and decides which ones need to be
1120 * displayed. This operation does not need lock, since only READY_SUBPICTURE
1121 * are handled. If no picture has been selected, display_date will depend on
1123 * We also check for ephemer DVD subpictures (subpictures that have
1124 * to be removed if a newer one is available), which makes it a lot
1125 * more difficult to guess if a subpicture has to be rendered or not.
1126 *****************************************************************************/
1127 subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t display_date,
1128 bool b_paused, bool b_subtitle_only )
1131 subpicture_t *p_subpic = NULL;
1133 /* Run subpicture filters */
1134 filter_chain_SubFilter( p_spu->p_chain, display_date );
1136 /* We get an easily parsable chained list of subpictures which
1137 * ends with NULL since p_subpic was initialized to NULL. */
1138 for( i_channel = 0; i_channel < p_spu->i_channel; i_channel++ )
1140 subpicture_t *p_ephemer = NULL;
1141 mtime_t ephemer_date = 0;
1144 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1146 subpicture_t *p_current = &p_spu->p_subpicture[i_index];
1148 if( p_current->i_channel != i_channel ||
1149 p_current->i_status != READY_SUBPICTURE ||
1150 ( b_subtitle_only && !p_current->b_subtitle ) )
1155 display_date < p_current->i_start )
1157 /* Too early, come back next monday */
1161 if( p_current->i_start > ephemer_date )
1162 ephemer_date = p_current->i_start;
1164 if( display_date > p_current->i_stop &&
1165 ( !p_current->b_ephemer || p_current->i_stop > p_current->i_start ) &&
1166 !( p_current->b_subtitle && b_paused ) ) /* XXX Assume that subtitle are pausable */
1168 /* Too late, destroy the subpic */
1169 spu_DestroySubpicture( p_spu, &p_spu->p_subpicture[i_index] );
1173 /* If this is an ephemer subpic, add it to our list */
1174 if( p_current->b_ephemer )
1176 p_current->p_next = p_ephemer;
1177 p_ephemer = p_current;
1182 p_current->p_next = p_subpic;
1183 p_subpic = p_current;
1186 /* If we found ephemer subpictures, check if they have to be
1187 * displayed or destroyed */
1188 while( p_ephemer != NULL )
1190 subpicture_t *p_tmp = p_ephemer;
1191 p_ephemer = p_ephemer->p_next;
1193 if( p_tmp->i_start < ephemer_date )
1195 /* Ephemer subpicture has lived too long */
1196 spu_DestroySubpicture( p_spu, p_tmp );
1200 /* Ephemer subpicture can still live a bit */
1201 p_tmp->p_next = p_subpic;
1210 /*****************************************************************************
1211 * SpuClearChannel: clear an spu channel
1212 *****************************************************************************
1213 * This function destroys the subpictures which belong to the spu channel
1214 * corresponding to i_channel_id.
1215 *****************************************************************************/
1216 static void SpuClearChannel( spu_t *p_spu, int i_channel, bool b_locked )
1218 int i_subpic; /* subpicture index */
1219 subpicture_t *p_subpic = NULL; /* first free subpicture */
1222 vlc_mutex_lock( &p_spu->subpicture_lock );
1224 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
1226 p_subpic = &p_spu->p_subpicture[i_subpic];
1227 if( p_subpic->i_status == FREE_SUBPICTURE
1228 || ( p_subpic->i_status != RESERVED_SUBPICTURE
1229 && p_subpic->i_status != READY_SUBPICTURE ) )
1234 if( p_subpic->i_channel == i_channel )
1236 while( p_subpic->p_region )
1238 subpicture_region_t *p_region = p_subpic->p_region;
1239 p_subpic->p_region = p_region->p_next;
1240 spu_DestroyRegion( p_spu, p_region );
1243 if( p_subpic->pf_destroy ) p_subpic->pf_destroy( p_subpic );
1244 p_subpic->i_status = FREE_SUBPICTURE;
1249 vlc_mutex_unlock( &p_spu->subpicture_lock );
1252 /*****************************************************************************
1253 * spu_ControlDefault: default methods for the subpicture unit control.
1254 *****************************************************************************/
1255 static int spu_vaControlDefault( spu_t *p_spu, int i_query, va_list args )
1261 case SPU_CHANNEL_REGISTER:
1262 pi = (int *)va_arg( args, int * );
1263 vlc_mutex_lock( &p_spu->subpicture_lock );
1265 *pi = p_spu->i_channel++;
1266 vlc_mutex_unlock( &p_spu->subpicture_lock );
1269 case SPU_CHANNEL_CLEAR:
1270 i = (int)va_arg( args, int );
1271 SpuClearChannel( p_spu, i, false );
1275 msg_Dbg( p_spu, "control query not supported" );
1276 return VLC_EGENERIC;
1282 /*****************************************************************************
1283 * Object variables callbacks
1284 *****************************************************************************/
1286 /*****************************************************************************
1287 * UpdateSPU: update subpicture settings
1288 *****************************************************************************
1289 * This function is called from CropCallback and at initialization time, to
1290 * retrieve crop information from the input.
1291 *****************************************************************************/
1292 static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
1296 vlc_mutex_lock( &p_spu->subpicture_lock );
1298 p_spu->b_force_palette = false;
1299 p_spu->b_force_crop = false;
1301 if( var_Get( p_object, "highlight", &val ) || !val.b_bool )
1303 vlc_mutex_unlock( &p_spu->subpicture_lock );
1307 p_spu->b_force_crop = true;
1308 var_Get( p_object, "x-start", &val );
1309 p_spu->i_crop_x = val.i_int;
1310 var_Get( p_object, "y-start", &val );
1311 p_spu->i_crop_y = val.i_int;
1312 var_Get( p_object, "x-end", &val );
1313 p_spu->i_crop_width = val.i_int - p_spu->i_crop_x;
1314 var_Get( p_object, "y-end", &val );
1315 p_spu->i_crop_height = val.i_int - p_spu->i_crop_y;
1317 if( var_Get( p_object, "menu-palette", &val ) == VLC_SUCCESS )
1319 memcpy( p_spu->palette, val.p_address, 16 );
1320 p_spu->b_force_palette = true;
1322 vlc_mutex_unlock( &p_spu->subpicture_lock );
1324 msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
1325 p_spu->i_crop_x, p_spu->i_crop_y,
1326 p_spu->i_crop_width, p_spu->i_crop_height,
1327 p_spu->b_force_palette );
1330 /*****************************************************************************
1331 * CropCallback: called when the highlight properties are changed
1332 *****************************************************************************
1333 * This callback is called from the input thread when we need cropping
1334 *****************************************************************************/
1335 static int CropCallback( vlc_object_t *p_object, char const *psz_var,
1336 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1338 (void)psz_var; (void)oldval; (void)newval;
1339 UpdateSPU( (spu_t *)p_data, p_object );
1343 /*****************************************************************************
1344 * Buffers allocation callbacks for the filters
1345 *****************************************************************************/
1346 static subpicture_t *sub_new_buffer( filter_t *p_filter )
1348 filter_owner_sys_t *p_sys = p_filter->p_owner;
1349 subpicture_t *p_subpicture = spu_CreateSubpicture( p_sys->p_spu );
1350 if( p_subpicture ) p_subpicture->i_channel = p_sys->i_channel;
1351 return p_subpicture;
1354 static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1356 filter_owner_sys_t *p_sys = p_filter->p_owner;
1357 spu_DestroySubpicture( p_sys->p_spu, p_subpic );
1360 static subpicture_t *spu_new_buffer( filter_t *p_filter )
1362 subpicture_t *p_subpic = calloc( 1, sizeof(subpicture_t) );
1366 p_subpic->b_absolute = true;
1367 p_subpic->i_alpha = 0xFF;
1369 p_subpic->pf_create_region = __spu_CreateRegion;
1370 p_subpic->pf_destroy_region = __spu_DestroyRegion;
1372 VLC_UNUSED(p_filter);
1376 static void spu_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1378 while( p_subpic->p_region )
1380 subpicture_region_t *p_region = p_subpic->p_region;
1381 p_subpic->p_region = p_region->p_next;
1382 p_subpic->pf_destroy_region( VLC_OBJECT(p_filter), p_region );
1388 static picture_t *spu_new_video_buffer( filter_t *p_filter )
1390 const video_format_t *p_fmt = &p_filter->fmt_out.video;
1392 VLC_UNUSED(p_filter);
1393 return picture_New( p_fmt->i_chroma,
1394 p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
1397 static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_picture )
1399 VLC_UNUSED(p_filter);
1400 picture_Release( p_picture );
1403 static int SubFilterCallback( vlc_object_t *p_object, char const *psz_var,
1404 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1406 spu_t *p_spu = p_data;
1408 VLC_UNUSED(p_object); VLC_UNUSED(oldval);
1409 VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1411 vlc_mutex_lock( &p_spu->subpicture_lock );
1412 filter_chain_Reset( p_spu->p_chain, NULL, NULL );
1413 spu_ParseChain( p_spu );
1414 vlc_mutex_unlock( &p_spu->subpicture_lock );
1418 static int SubFilterAllocationInit( filter_t *p_filter, void *p_data )
1420 spu_t *p_spu = p_data;
1422 filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
1424 return VLC_EGENERIC;
1426 p_filter->pf_sub_buffer_new = sub_new_buffer;
1427 p_filter->pf_sub_buffer_del = sub_del_buffer;
1429 p_filter->p_owner = p_sys;
1430 spu_Control( p_spu, SPU_CHANNEL_REGISTER, &p_sys->i_channel );
1431 p_sys->p_spu = p_spu;
1436 static void SubFilterAllocationClean( filter_t *p_filter )
1438 filter_owner_sys_t *p_sys = p_filter->p_owner;
1440 SpuClearChannel( p_sys->p_spu, p_sys->i_channel, true );
1441 free( p_filter->p_owner );