vout_subpictures.c
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上传日期:2020-07-06
资源大小:29949k
文件大小:62k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * vout_subpictures.c : subpicture management functions
- *****************************************************************************
- * Copyright (C) 2000-2007 the VideoLAN team
- * $Id: 56baf3b80790c9b28b2d4c96f17ea07242d2751c $
- *
- * Authors: Vincent Seguin <seguin@via.ecp.fr>
- * Samuel Hocevar <sam@zoy.org>
- * Gildas Bazin <gbazin@videolan.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_vout.h>
- #include <vlc_block.h>
- #include <vlc_filter.h>
- #include <vlc_osd.h>
- #include "../libvlc.h"
- #include "vout_internal.h"
- #include <assert.h>
- #include <limits.h>
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- /* Number of simultaneous subpictures */
- #define VOUT_MAX_SUBPICTURES (__MAX(VOUT_MAX_PICTURES, SPU_MAX_PREPARE_TIME/5000))
- #define VLC_FOURCC_YUVP VLC_FOURCC('Y','U','V','P')
- #define VLC_FOURCC_YUVA VLC_FOURCC('Y','U','V','A')
- #define VLC_FOURCC_RGBA VLC_FOURCC('R','G','B','A')
- #define VLC_FOURCC_TEXT VLC_FOURCC('T','E','X','T')
- /* */
- typedef struct
- {
- subpicture_t *p_subpicture;
- bool b_reject;
- } spu_heap_entry_t;
- typedef struct
- {
- spu_heap_entry_t p_entry[VOUT_MAX_SUBPICTURES];
- } spu_heap_t;
- static void SpuHeapInit( spu_heap_t * );
- static int SpuHeapPush( spu_heap_t *, subpicture_t * );
- static void SpuHeapDeleteAt( spu_heap_t *, int i_index );
- static int SpuHeapDeleteSubpicture( spu_heap_t *, subpicture_t * );
- static void SpuHeapClean( spu_heap_t *p_heap );
- struct spu_private_t
- {
- vlc_mutex_t lock; /* lock to protect all followings fields */
- spu_heap_t heap;
- int i_channel; /**< number of subpicture channels registered */
- filter_t *p_blend; /**< alpha blending module */
- filter_t *p_text; /**< text renderer module */
- filter_t *p_scale_yuvp; /**< scaling module for YUVP */
- filter_t *p_scale; /**< scaling module (all but YUVP) */
- bool b_force_crop; /**< force cropping of subpicture */
- int i_crop_x, i_crop_y, i_crop_width, i_crop_height; /**< cropping */
- int i_margin; /**< force position of a subpicture */
- bool b_force_palette; /**< force palette of subpicture */
- uint8_t palette[4][4]; /**< forced palette */
- /* Subpiture filters */
- char *psz_chain_update;
- filter_chain_t *p_chain;
- /* */
- mtime_t i_last_sort_date;
- };
- /* */
- struct subpicture_region_private_t
- {
- video_format_t fmt;
- picture_t *p_picture;
- };
- static subpicture_region_private_t *SpuRegionPrivateNew( video_format_t * );
- static void SpuRegionPrivateDelete( subpicture_region_private_t * );
- /* */
- typedef struct
- {
- int w;
- int h;
- } spu_scale_t;
- static spu_scale_t spu_scale_create( int w, int h );
- static spu_scale_t spu_scale_unit(void );
- static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd );
- static int spu_scale_w( int v, const spu_scale_t s );
- static int spu_scale_h( int v, const spu_scale_t s );
- static int spu_invscale_w( int v, const spu_scale_t s );
- static int spu_invscale_h( int v, const spu_scale_t s );
- typedef struct
- {
- int i_x;
- int i_y;
- int i_width;
- int i_height;
- spu_scale_t scale;
- } spu_area_t;
- static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t );
- static spu_area_t spu_area_scaled( spu_area_t );
- static spu_area_t spu_area_unscaled( spu_area_t, spu_scale_t );
- static bool spu_area_overlap( spu_area_t, spu_area_t );
- /* Subpicture rendered flag
- * FIXME ? it could be moved to private ? */
- #define SUBPICTURE_RENDERED (0x1000)
- #if SUBPICTURE_RENDERED < SUBPICTURE_ALIGN_MASK
- # error SUBPICTURE_RENDERED too low
- #endif
- #define SCALE_UNIT (1000)
- static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic );
- static int SubpictureCmp( const void *s0, const void *s1 );
- static void SpuRenderRegion( spu_t *,
- picture_t *p_pic_dst, spu_area_t *,
- subpicture_t *, subpicture_region_t *,
- const spu_scale_t scale_size,
- const video_format_t *p_fmt,
- const spu_area_t *p_subtitle_area, int i_subtitle_area,
- mtime_t render_date );
- static void UpdateSPU ( spu_t *, vlc_object_t * );
- static int CropCallback( vlc_object_t *, char const *,
- vlc_value_t, vlc_value_t, void * );
- static int SpuControl( spu_t *, int, va_list );
- static void SpuClearChannel( spu_t *p_spu, int i_channel );
- /* Buffer allocation for SPU filter (blend, scale, ...) */
- static subpicture_t *spu_new_buffer( filter_t * );
- static void spu_del_buffer( filter_t *, subpicture_t * );
- static picture_t *spu_new_video_buffer( filter_t * );
- static void spu_del_video_buffer( filter_t *, picture_t * );
- /* Buffer aloccation fir SUB filter */
- static int SubFilterCallback( vlc_object_t *, char const *,
- vlc_value_t, vlc_value_t, void * );
- static int SubFilterAllocationInit( filter_t *, void * );
- static void SubFilterAllocationClean( filter_t * );
- /* */
- static void SpuRenderCreateAndLoadText( spu_t * );
- static void SpuRenderCreateAndLoadScale( spu_t * );
- static void SpuRenderCreateBlend( spu_t *, const video_format_t * );
- static void FilterRelease( filter_t *p_filter );
- /*****************************************************************************
- * Public API
- *****************************************************************************/
- /**
- * Creates the subpicture unit
- *
- * param p_this the parent object which creates the subpicture unit
- */
- spu_t *__spu_Create( vlc_object_t *p_this )
- {
- spu_t *p_spu;
- spu_private_t *p_sys;
- p_spu = vlc_custom_create( p_this, sizeof(spu_t) + sizeof(spu_private_t),
- VLC_OBJECT_GENERIC, "subpicture" );
- if( !p_spu )
- return NULL;
- /* Initialize spu fields */
- p_spu->pf_control = SpuControl;
- p_spu->p = p_sys = (spu_private_t*)&p_spu[1];
- /* Initialize private fields */
- vlc_mutex_init( &p_sys->lock );
- SpuHeapInit( &p_sys->heap );
- p_sys->p_blend = NULL;
- p_sys->p_text = NULL;
- p_sys->p_scale = NULL;
- p_sys->p_scale_yuvp = NULL;
- /* Register the default subpicture channel */
- p_sys->i_channel = 2;
- vlc_object_attach( p_spu, p_this );
- p_sys->psz_chain_update = NULL;
- p_sys->p_chain = filter_chain_New( p_spu, "sub filter", false,
- SubFilterAllocationInit,
- SubFilterAllocationClean,
- p_spu );
- /* Load text and scale module */
- SpuRenderCreateAndLoadText( p_spu );
- SpuRenderCreateAndLoadScale( p_spu );
- /* */
- p_sys->i_last_sort_date = -1;
- return p_spu;
- }
- /**
- * Initialise the subpicture unit
- *
- * param p_spu the subpicture unit object
- */
- int spu_Init( spu_t *p_spu )
- {
- spu_private_t *p_sys = p_spu->p;
- /* If the user requested a sub margin, we force the position. */
- p_sys->i_margin = var_CreateGetInteger( p_spu, "sub-margin" );
- var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
- var_AddCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
- var_TriggerCallback( p_spu, "sub-filter" );
- return VLC_SUCCESS;
- }
- /**
- * Destroy the subpicture unit
- *
- * param p_this the parent object which destroys the subpicture unit
- */
- void spu_Destroy( spu_t *p_spu )
- {
- spu_private_t *p_sys = p_spu->p;
- var_DelCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
- if( p_sys->p_blend )
- FilterRelease( p_sys->p_blend );
- if( p_sys->p_text )
- FilterRelease( p_sys->p_text );
- if( p_sys->p_scale_yuvp )
- FilterRelease( p_sys->p_scale_yuvp );
- if( p_sys->p_scale )
- FilterRelease( p_sys->p_scale );
- filter_chain_Delete( p_sys->p_chain );
- free( p_sys->psz_chain_update );
- /* Destroy all remaining subpictures */
- SpuHeapClean( &p_sys->heap );
- vlc_mutex_destroy( &p_sys->lock );
- vlc_object_release( p_spu );
- }
- /**
- * Attach/Detach the SPU from any input
- *
- * param p_this the object in which to destroy the subpicture unit
- * param b_attach to select attach or detach
- */
- void spu_Attach( spu_t *p_spu, vlc_object_t *p_this, bool b_attach )
- {
- vlc_object_t *p_input;
- p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
- if( !p_input )
- return;
- if( b_attach )
- {
- UpdateSPU( p_spu, VLC_OBJECT(p_input) );
- var_AddCallback( p_input, "highlight", CropCallback, p_spu );
- vlc_object_release( p_input );
- }
- else
- {
- /* Delete callback */
- var_DelCallback( p_input, "highlight", CropCallback, p_spu );
- vlc_object_release( p_input );
- }
- }
- /**
- * Display a subpicture
- *
- * Remove the reservation flag of a subpicture, which will cause it to be
- * ready for display.
- * param p_spu the subpicture unit object
- * param p_subpic the subpicture to display
- */
- void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
- {
- spu_private_t *p_sys = p_spu->p;
- /* DEFAULT_CHAN always reset itself */
- if( p_subpic->i_channel == DEFAULT_CHAN )
- SpuClearChannel( p_spu, DEFAULT_CHAN );
- /* p_private is for spu only and cannot be non NULL here */
- for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
- assert( r->p_private == NULL );
- /* */
- vlc_mutex_lock( &p_sys->lock );
- if( SpuHeapPush( &p_sys->heap, p_subpic ) )
- {
- vlc_mutex_unlock( &p_sys->lock );
- msg_Err( p_spu, "subpicture heap full" );
- subpicture_Delete( p_subpic );
- return;
- }
- vlc_mutex_unlock( &p_sys->lock );
- }
- /**
- * This function renders all sub picture units in the list.
- */
- void spu_RenderSubpicturesNew( spu_t *p_spu,
- picture_t *p_pic_dst, const video_format_t *p_fmt_dst,
- subpicture_t *p_subpic_list,
- const video_format_t *p_fmt_src,
- mtime_t render_subtitle_date )
- {
- spu_private_t *p_sys = p_spu->p;
- const mtime_t render_osd_date = mdate();
- const int i_source_video_width = p_fmt_src->i_width;
- const int i_source_video_height = p_fmt_src->i_height;
- unsigned int i_subpicture;
- subpicture_t *pp_subpicture[VOUT_MAX_SUBPICTURES];
- unsigned int i_subtitle_region_count;
- spu_area_t p_subtitle_area_buffer[VOUT_MAX_SUBPICTURES];
- spu_area_t *p_subtitle_area;
- int i_subtitle_area;
- vlc_mutex_lock( &p_sys->lock );
- /* Preprocess subpictures */
- i_subpicture = 0;
- i_subtitle_region_count = 0;
- for( subpicture_t * p_subpic = p_subpic_list;
- p_subpic != NULL;
- p_subpic = p_subpic->p_next )
- {
- /* TODO remove pre-render */
- if( p_subpic->pf_pre_render )
- p_subpic->pf_pre_render( p_spu, p_subpic, p_fmt_dst );
- if( p_subpic->pf_update_regions )
- {
- video_format_t fmt_org = *p_fmt_dst;
- fmt_org.i_width =
- fmt_org.i_visible_width = i_source_video_width;
- fmt_org.i_height =
- fmt_org.i_visible_height = i_source_video_height;
- p_subpic->pf_update_regions( p_spu, p_subpic, &fmt_org,
- p_subpic->b_subtitle ? render_subtitle_date : render_osd_date );
- }
- /* */
- if( p_subpic->b_subtitle )
- {
- for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
- i_subtitle_region_count++;
- }
- /* */
- pp_subpicture[i_subpicture++] = p_subpic;
- }
- /* Be sure we have at least 1 picture to process */
- if( i_subpicture <= 0 )
- {
- vlc_mutex_unlock( &p_sys->lock );
- return;
- }
- /* Now order subpicture array
- * XXX The order is *really* important for overlap subtitles positionning */
- qsort( pp_subpicture, i_subpicture, sizeof(*pp_subpicture), SubpictureCmp );
- /* Allocate area array for subtitle overlap */
- i_subtitle_area = 0;
- p_subtitle_area = p_subtitle_area_buffer;
- if( i_subtitle_region_count > sizeof(p_subtitle_area_buffer)/sizeof(*p_subtitle_area_buffer) )
- p_subtitle_area = calloc( i_subtitle_region_count, sizeof(*p_subtitle_area) );
- /* Create the blending module */
- if( !p_sys->p_blend )
- SpuRenderCreateBlend( p_spu, p_fmt_dst );
- /* Process all subpictures and regions (in the right order) */
- for( unsigned int i_index = 0; i_index < i_subpicture; i_index++ )
- {
- subpicture_t *p_subpic = pp_subpicture[i_index];
- subpicture_region_t *p_region;
- if( !p_subpic->p_region )
- continue;
- /* FIXME when possible use a better rendering size than source size
- * (max of display size and source size for example) FIXME */
- int i_render_width = p_subpic->i_original_picture_width;
- int i_render_height = p_subpic->i_original_picture_height;
- if( !i_render_width || !i_render_height )
- {
- if( i_render_width != 0 || i_render_height != 0 )
- msg_Err( p_spu, "unsupported original picture size %dx%d",
- i_render_width, i_render_height );
- p_subpic->i_original_picture_width = i_render_width = i_source_video_width;
- p_subpic->i_original_picture_height = i_render_height = i_source_video_height;
- }
- if( p_sys->p_text )
- {
- p_sys->p_text->fmt_out.video.i_width =
- p_sys->p_text->fmt_out.video.i_visible_width = i_render_width;
- p_sys->p_text->fmt_out.video.i_height =
- p_sys->p_text->fmt_out.video.i_visible_height = i_render_height;
- }
- /* Compute scaling from picture to source size */
- spu_scale_t scale = spu_scale_createq( i_source_video_width, i_render_width,
- i_source_video_height, i_render_height );
- /* Update scaling from source size to display size(p_fmt_dst) */
- scale.w = scale.w * p_fmt_dst->i_width / i_source_video_width;
- scale.h = scale.h * p_fmt_dst->i_height / i_source_video_height;
- /* Set default subpicture aspect ratio
- * FIXME if we only handle 1 aspect ratio per picture, why is it set per
- * region ? */
- p_region = p_subpic->p_region;
- if( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den )
- {
- if( p_region->fmt.i_aspect != 0 )
- {
- p_region->fmt.i_sar_den = p_region->fmt.i_aspect;
- p_region->fmt.i_sar_num = VOUT_ASPECT_FACTOR;
- }
- else
- {
- p_region->fmt.i_sar_den = p_fmt_dst->i_sar_den;
- p_region->fmt.i_sar_num = p_fmt_dst->i_sar_num;
- }
- }
- /* Take care of the aspect ratio */
- if( p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den !=
- p_region->fmt.i_sar_den * p_fmt_dst->i_sar_num )
- {
- /* FIXME FIXME what about region->i_x/i_y ? */
- scale.w = scale.w *
- (int64_t)p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den /
- p_region->fmt.i_sar_den / p_fmt_dst->i_sar_num;
- }
- /* Render all regions
- * We always transform non absolute subtitle into absolute one on the
- * first rendering to allow good subtitle overlap support.
- */
- for( p_region = p_subpic->p_region; p_region != NULL; p_region = p_region->p_next )
- {
- spu_area_t area;
- /* Check scale validity */
- if( scale.w <= 0 || scale.h <= 0 )
- continue;
- /* */
- SpuRenderRegion( p_spu, p_pic_dst, &area,
- p_subpic, p_region, scale, p_fmt_dst,
- p_subtitle_area, i_subtitle_area,
- p_subpic->b_subtitle ? render_subtitle_date : render_osd_date );
- if( p_subpic->b_subtitle )
- {
- area = spu_area_unscaled( area, scale );
- if( !p_subpic->b_absolute && area.i_width > 0 && area.i_height > 0 )
- {
- p_region->i_x = area.i_x;
- p_region->i_y = area.i_y;
- }
- if( p_subtitle_area )
- p_subtitle_area[i_subtitle_area++] = area;
- }
- }
- if( p_subpic->b_subtitle )
- p_subpic->b_absolute = true;
- }
- /* */
- if( p_subtitle_area != p_subtitle_area_buffer )
- free( p_subtitle_area );
- vlc_mutex_unlock( &p_sys->lock );
- }
- void spu_RenderSubpictures( spu_t *p_spu,
- picture_t *p_pic_dst, const video_format_t *p_fmt_dst,
- subpicture_t *p_subpic_list,
- const video_format_t *p_fmt_src,
- bool b_paused )
- {
- VLC_UNUSED(b_paused);
- spu_RenderSubpictures( p_spu, p_pic_dst, p_fmt_dst,
- p_subpic_list, p_fmt_src, mdate() );
- }
- /*****************************************************************************
- * spu_SortSubpictures: find the subpictures to display
- *****************************************************************************
- * This function parses all subpictures and decides which ones need to be
- * displayed. If no picture has been selected, display_date will depend on
- * the subpicture.
- * We also check for ephemer DVD subpictures (subpictures that have
- * to be removed if a newer one is available), which makes it a lot
- * more difficult to guess if a subpicture has to be rendered or not.
- *****************************************************************************/
- subpicture_t *spu_SortSubpicturesNew( spu_t *p_spu, mtime_t render_subtitle_date,
- bool b_subtitle_only )
- {
- spu_private_t *p_sys = p_spu->p;
- int i_channel;
- subpicture_t *p_subpic = NULL;
- const mtime_t render_osd_date = mdate();
- /* Update sub-filter chain */
- vlc_mutex_lock( &p_sys->lock );
- char *psz_chain_update = p_sys->psz_chain_update;
- p_sys->psz_chain_update = NULL;
- vlc_mutex_unlock( &p_sys->lock );
- if( psz_chain_update )
- {
- filter_chain_Reset( p_sys->p_chain, NULL, NULL );
- filter_chain_AppendFromString( p_spu->p->p_chain, psz_chain_update );
- free( psz_chain_update );
- }
- /* Run subpicture filters */
- filter_chain_SubFilter( p_sys->p_chain, render_osd_date );
- vlc_mutex_lock( &p_sys->lock );
- /* We get an easily parsable chained list of subpictures which
- * ends with NULL since p_subpic was initialized to NULL. */
- for( i_channel = 0; i_channel < p_sys->i_channel; i_channel++ )
- {
- subpicture_t *p_available_subpic[VOUT_MAX_SUBPICTURES];
- bool pb_available_late[VOUT_MAX_SUBPICTURES];
- int i_available = 0;
- mtime_t start_date = render_subtitle_date;
- mtime_t ephemer_subtitle_date = 0;
- mtime_t ephemer_osd_date = 0;
- int64_t i_ephemer_subtitle_order = INT64_MIN;
- int64_t i_ephemer_system_order = INT64_MIN;
- int i_index;
- /* Select available pictures */
- for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
- {
- spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_index];
- subpicture_t *p_current = p_entry->p_subpicture;
- bool b_stop_valid;
- bool b_late;
- if( !p_current || p_entry->b_reject )
- {
- if( p_entry->b_reject )
- SpuHeapDeleteAt( &p_sys->heap, i_index );
- continue;
- }
- if( p_current->i_channel != i_channel ||
- ( b_subtitle_only && !p_current->b_subtitle ) )
- {
- continue;
- }
- const mtime_t render_date = p_current->b_subtitle ? render_subtitle_date : render_osd_date;
- if( render_date &&
- render_date < p_current->i_start )
- {
- /* Too early, come back next monday */
- continue;
- }
- mtime_t *pi_ephemer_date = p_current->b_subtitle ? &ephemer_subtitle_date : &ephemer_osd_date;
- int64_t *pi_ephemer_order = p_current->b_subtitle ? &i_ephemer_subtitle_order : &i_ephemer_system_order;
- if( p_current->i_start >= *pi_ephemer_date )
- {
- *pi_ephemer_date = p_current->i_start;
- if( p_current->i_order > *pi_ephemer_order )
- *pi_ephemer_order = p_current->i_order;
- }
- b_stop_valid = !p_current->b_ephemer || p_current->i_stop > p_current->i_start;
- b_late = b_stop_valid && p_current->i_stop <= render_date;
- /* start_date will be used for correct automatic overlap support
- * in case picture that should not be displayed anymore (display_time)
- * overlap with a picture to be displayed (p_current->i_start) */
- if( p_current->b_subtitle && !b_late && !p_current->b_ephemer )
- start_date = p_current->i_start;
- /* */
- p_available_subpic[i_available] = p_current;
- pb_available_late[i_available] = b_late;
- i_available++;
- }
- /* Only forced old picture display at the transition */
- if( start_date < p_sys->i_last_sort_date )
- start_date = p_sys->i_last_sort_date;
- if( start_date <= 0 )
- start_date = INT64_MAX;
- /* Select pictures to be displayed */
- for( i_index = 0; i_index < i_available; i_index++ )
- {
- subpicture_t *p_current = p_available_subpic[i_index];
- bool b_late = pb_available_late[i_index];
- const mtime_t stop_date = p_current->b_subtitle ? __MAX( start_date, p_sys->i_last_sort_date ) : render_osd_date;
- const mtime_t ephemer_date = p_current->b_subtitle ? ephemer_subtitle_date : ephemer_osd_date;
- const int64_t i_ephemer_order = p_current->b_subtitle ? i_ephemer_subtitle_order : i_ephemer_system_order;
- /* Destroy late and obsolete ephemer subpictures */
- bool b_rejet = b_late && p_current->i_stop <= stop_date;
- if( p_current->b_ephemer )
- {
- if( p_current->i_start < ephemer_date )
- b_rejet = true;
- else if( p_current->i_start == ephemer_date &&
- p_current->i_order < i_ephemer_order )
- b_rejet = true;
- }
- if( b_rejet )
- SpuHeapDeleteSubpicture( &p_sys->heap, p_current );
- else
- SubpictureChain( &p_subpic, p_current );
- }
- }
- p_sys->i_last_sort_date = render_subtitle_date;
- vlc_mutex_unlock( &p_sys->lock );
- return p_subpic;
- }
- subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t display_date, bool b_paused,
- bool b_subtitle_only )
- {
- VLC_UNUSED(b_paused);
- return spu_SortSubpicturesNew( p_spu, display_date, b_subtitle_only );
- }
- void spu_OffsetSubtitleDate( spu_t *p_spu, mtime_t i_duration )
- {
- spu_private_t *p_sys = p_spu->p;
- vlc_mutex_lock( &p_sys->lock );
- for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
- {
- spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i];
- subpicture_t *p_current = p_entry->p_subpicture;
- if( p_current && p_current->b_subtitle )
- {
- if( p_current->i_start > 0 )
- p_current->i_start += i_duration;
- if( p_current->i_stop > 0 )
- p_current->i_stop += i_duration;
- }
- }
- vlc_mutex_unlock( &p_sys->lock );
- }
- /*****************************************************************************
- * subpicture_t allocation
- *****************************************************************************/
- subpicture_t *subpicture_New( void )
- {
- subpicture_t *p_subpic = calloc( 1, sizeof(*p_subpic) );
- if( !p_subpic )
- return NULL;
- p_subpic->i_order = 0;
- p_subpic->b_absolute = true;
- p_subpic->b_fade = false;
- p_subpic->b_subtitle = false;
- p_subpic->i_alpha = 0xFF;
- p_subpic->p_region = NULL;
- p_subpic->pf_render = NULL;
- p_subpic->pf_destroy = NULL;
- p_subpic->p_sys = NULL;
- return p_subpic;
- }
- void subpicture_Delete( subpicture_t *p_subpic )
- {
- subpicture_region_ChainDelete( p_subpic->p_region );
- p_subpic->p_region = NULL;
- if( p_subpic->pf_destroy )
- {
- p_subpic->pf_destroy( p_subpic );
- }
- free( p_subpic );
- }
- static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic )
- {
- p_subpic->p_next = *pp_head;
- *pp_head = p_subpic;
- }
- /*****************************************************************************
- * subpicture_region_t allocation
- *****************************************************************************/
- subpicture_region_t *subpicture_region_New( const video_format_t *p_fmt )
- {
- subpicture_region_t *p_region = calloc( 1, sizeof(*p_region ) );
- if( !p_region )
- return NULL;
- p_region->fmt = *p_fmt;
- p_region->fmt.p_palette = NULL;
- if( p_fmt->i_chroma == VLC_FOURCC_YUVP )
- {
- p_region->fmt.p_palette = calloc( 1, sizeof(*p_region->fmt.p_palette) );
- if( p_fmt->p_palette )
- *p_region->fmt.p_palette = *p_fmt->p_palette;
- }
- p_region->i_alpha = 0xff;
- p_region->p_next = NULL;
- p_region->p_private = NULL;
- p_region->psz_text = NULL;
- p_region->p_style = NULL;
- p_region->p_picture = NULL;
- if( p_fmt->i_chroma == VLC_FOURCC_TEXT )
- return p_region;
- p_region->p_picture = picture_New( p_fmt->i_chroma, p_fmt->i_width, p_fmt->i_height,
- p_fmt->i_aspect );
- if( !p_region->p_picture )
- {
- free( p_fmt->p_palette );
- free( p_region );
- return NULL;
- }
- return p_region;
- }
- /* */
- void subpicture_region_Delete( subpicture_region_t *p_region )
- {
- if( !p_region )
- return;
- if( p_region->p_private )
- SpuRegionPrivateDelete( p_region->p_private );
- if( p_region->p_picture )
- picture_Release( p_region->p_picture );
- free( p_region->fmt.p_palette );
- free( p_region->psz_text );
- free( p_region->psz_html );
- //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
- free( p_region );
- }
- /* */
- void subpicture_region_ChainDelete( subpicture_region_t *p_head )
- {
- while( p_head )
- {
- subpicture_region_t *p_next = p_head->p_next;
- subpicture_region_Delete( p_head );
- p_head = p_next;
- }
- }
- /*****************************************************************************
- * heap managment
- *****************************************************************************/
- static void SpuHeapInit( spu_heap_t *p_heap )
- {
- for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
- {
- spu_heap_entry_t *e = &p_heap->p_entry[i];
- e->p_subpicture = NULL;
- e->b_reject = false;
- }
- }
- static int SpuHeapPush( spu_heap_t *p_heap, subpicture_t *p_subpic )
- {
- for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
- {
- spu_heap_entry_t *e = &p_heap->p_entry[i];
- if( e->p_subpicture )
- continue;
- e->p_subpicture = p_subpic;
- e->b_reject = false;
- return VLC_SUCCESS;
- }
- return VLC_EGENERIC;
- }
- static void SpuHeapDeleteAt( spu_heap_t *p_heap, int i_index )
- {
- spu_heap_entry_t *e = &p_heap->p_entry[i_index];
- if( e->p_subpicture )
- subpicture_Delete( e->p_subpicture );
- e->p_subpicture = NULL;
- }
- static int SpuHeapDeleteSubpicture( spu_heap_t *p_heap, subpicture_t *p_subpic )
- {
- for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
- {
- spu_heap_entry_t *e = &p_heap->p_entry[i];
- if( e->p_subpicture != p_subpic )
- continue;
- SpuHeapDeleteAt( p_heap, i );
- return VLC_SUCCESS;
- }
- return VLC_EGENERIC;
- }
- static void SpuHeapClean( spu_heap_t *p_heap )
- {
- for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
- {
- spu_heap_entry_t *e = &p_heap->p_entry[i];
- if( e->p_subpicture )
- subpicture_Delete( e->p_subpicture );
- }
- }
- static subpicture_region_private_t *SpuRegionPrivateNew( video_format_t *p_fmt )
- {
- subpicture_region_private_t *p_private = malloc( sizeof(*p_private) );
- if( !p_private )
- return NULL;
- p_private->fmt = *p_fmt;
- if( p_fmt->p_palette )
- {
- p_private->fmt.p_palette = malloc( sizeof(*p_private->fmt.p_palette) );
- if( p_private->fmt.p_palette )
- *p_private->fmt.p_palette = *p_fmt->p_palette;
- }
- p_private->p_picture = NULL;
- return p_private;
- }
- static void SpuRegionPrivateDelete( subpicture_region_private_t *p_private )
- {
- if( p_private->p_picture )
- picture_Release( p_private->p_picture );
- free( p_private->fmt.p_palette );
- free( p_private );
- }
- static void FilterRelease( filter_t *p_filter )
- {
- if( p_filter->p_module )
- module_unneed( p_filter, p_filter->p_module );
- vlc_object_detach( p_filter );
- vlc_object_release( p_filter );
- }
- static void SpuRenderCreateBlend( spu_t *p_spu, const video_format_t *p_fmt )
- {
- filter_t *p_blend;
- assert( !p_spu->p->p_blend );
- p_spu->p->p_blend =
- p_blend = vlc_custom_create( p_spu, sizeof(filter_t),
- VLC_OBJECT_GENERIC, "blend" );
- if( !p_blend )
- return;
- es_format_Init( &p_blend->fmt_in, VIDEO_ES, 0 );
- es_format_Init( &p_blend->fmt_out, VIDEO_ES, 0 );
- p_blend->fmt_out.video.i_x_offset = 0;
- p_blend->fmt_out.video.i_y_offset = 0;
- p_blend->fmt_out.video.i_chroma = p_fmt->i_chroma;
- p_blend->fmt_out.video.i_aspect = p_fmt->i_aspect;
- p_blend->fmt_out.video.i_chroma = p_fmt->i_chroma;
- p_blend->fmt_out.video.i_rmask = p_fmt->i_rmask;
- p_blend->fmt_out.video.i_gmask = p_fmt->i_gmask;
- p_blend->fmt_out.video.i_bmask = p_fmt->i_bmask;
- p_blend->fmt_out.video.i_rrshift= p_fmt->i_rrshift;
- p_blend->fmt_out.video.i_rgshift= p_fmt->i_rgshift;
- p_blend->fmt_out.video.i_rbshift= p_fmt->i_rbshift;
- p_blend->fmt_out.video.i_lrshift= p_fmt->i_lrshift;
- p_blend->fmt_out.video.i_lgshift= p_fmt->i_lgshift;
- p_blend->fmt_out.video.i_lbshift= p_fmt->i_lbshift;
- /* The blend module will be loaded when needed with the real
- * input format */
- p_blend->p_module = NULL;
- /* */
- vlc_object_attach( p_blend, p_spu );
- }
- static void SpuRenderUpdateBlend( spu_t *p_spu, int i_out_width, int i_out_height,
- const video_format_t *p_in_fmt )
- {
- filter_t *p_blend = p_spu->p->p_blend;
- assert( p_blend );
- /* */
- if( p_blend->p_module && p_blend->fmt_in.video.i_chroma != p_in_fmt->i_chroma )
- {
- /* The chroma is not the same, we need to reload the blend module
- * XXX to match the old behaviour just test !p_blend->fmt_in.video.i_chroma */
- module_unneed( p_blend, p_blend->p_module );
- p_blend->p_module = NULL;
- }
- /* */
- p_blend->fmt_in.video = *p_in_fmt;
- /* */
- p_blend->fmt_out.video.i_width =
- p_blend->fmt_out.video.i_visible_width = i_out_width;
- p_blend->fmt_out.video.i_height =
- p_blend->fmt_out.video.i_visible_height = i_out_height;
- /* */
- if( !p_blend->p_module )
- p_blend->p_module = module_need( p_blend, "video blending", NULL, false );
- }
- static void SpuRenderCreateAndLoadText( spu_t *p_spu )
- {
- filter_t *p_text;
- assert( !p_spu->p->p_text );
- p_spu->p->p_text =
- p_text = vlc_custom_create( p_spu, sizeof(filter_t),
- VLC_OBJECT_GENERIC, "spu text" );
- if( !p_text )
- return;
- es_format_Init( &p_text->fmt_in, VIDEO_ES, 0 );
- es_format_Init( &p_text->fmt_out, VIDEO_ES, 0 );
- p_text->fmt_out.video.i_width =
- p_text->fmt_out.video.i_visible_width = 32;
- p_text->fmt_out.video.i_height =
- p_text->fmt_out.video.i_visible_height = 32;
- p_text->pf_sub_buffer_new = spu_new_buffer;
- p_text->pf_sub_buffer_del = spu_del_buffer;
- vlc_object_attach( p_text, p_spu );
- /* FIXME TOCHECK shouldn't module_need( , , psz_modulename, false ) do the
- * same than these 2 calls ? */
- char *psz_modulename = var_CreateGetString( p_spu, "text-renderer" );
- if( psz_modulename && *psz_modulename )
- {
- p_text->p_module = module_need( p_text, "text renderer",
- psz_modulename, true );
- }
- free( psz_modulename );
- if( !p_text->p_module )
- p_text->p_module = module_need( p_text, "text renderer", NULL, false );
- /* Create a few variables used for enhanced text rendering */
- var_Create( p_text, "spu-duration", VLC_VAR_TIME );
- var_Create( p_text, "spu-elapsed", VLC_VAR_TIME );
- var_Create( p_text, "text-rerender", VLC_VAR_BOOL );
- var_Create( p_text, "scale", VLC_VAR_INTEGER );
- }
- static filter_t *CreateAndLoadScale( vlc_object_t *p_obj,
- vlc_fourcc_t i_src_chroma, vlc_fourcc_t i_dst_chroma,
- bool b_resize )
- {
- filter_t *p_scale;
- p_scale = vlc_custom_create( p_obj, sizeof(filter_t),
- VLC_OBJECT_GENERIC, "scale" );
- if( !p_scale )
- return NULL;
- es_format_Init( &p_scale->fmt_in, VIDEO_ES, 0 );
- p_scale->fmt_in.video.i_chroma = i_src_chroma;
- p_scale->fmt_in.video.i_width =
- p_scale->fmt_in.video.i_height = 32;
- es_format_Init( &p_scale->fmt_out, VIDEO_ES, 0 );
- p_scale->fmt_out.video.i_chroma = i_dst_chroma;
- p_scale->fmt_out.video.i_width =
- p_scale->fmt_out.video.i_height = b_resize ? 16 : 32;
- p_scale->pf_vout_buffer_new = spu_new_video_buffer;
- p_scale->pf_vout_buffer_del = spu_del_video_buffer;
- vlc_object_attach( p_scale, p_obj );
- p_scale->p_module = module_need( p_scale, "video filter2", NULL, false );
- return p_scale;
- }
- static void SpuRenderCreateAndLoadScale( spu_t *p_spu )
- {
- assert( !p_spu->p->p_scale );
- assert( !p_spu->p->p_scale_yuvp );
- /* XXX p_spu->p_scale is used for all conversion/scaling except yuvp to
- * yuva/rgba */
- p_spu->p->p_scale = CreateAndLoadScale( VLC_OBJECT(p_spu),
- VLC_FOURCC_YUVA, VLC_FOURCC_YUVA, true );
- /* This one is used for YUVP to YUVA/RGBA without scaling
- * FIXME rename it */
- p_spu->p->p_scale_yuvp = CreateAndLoadScale( VLC_OBJECT(p_spu),
- VLC_FOURCC_YUVP, VLC_FOURCC_YUVA, false );
- }
- static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
- subpicture_t *p_subpic, subpicture_region_t *p_region,
- int i_min_scale_ratio, mtime_t render_date )
- {
- filter_t *p_text = p_spu->p->p_text;
- assert( p_region->fmt.i_chroma == VLC_FOURCC_TEXT );
- if( !p_text || !p_text->p_module )
- goto exit;
- /* Setup 3 variables which can be used to render
- * time-dependent text (and effects). The first indicates
- * the total amount of time the text will be on screen,
- * the second the amount of time it has already been on
- * screen (can be a negative value as text is layed out
- * before it is rendered) and the third is a feedback
- * variable from the renderer - if the renderer sets it
- * then this particular text is time-dependent, eg. the
- * visual progress bar inside the text in karaoke and the
- * text needs to be rendered multiple times in order for
- * the effect to work - we therefore need to return the
- * region to its original state at the end of the loop,
- * instead of leaving it in YUVA or YUVP.
- * Any renderer which is unaware of how to render
- * time-dependent text can happily ignore the variables
- * and render the text the same as usual - it should at
- * least show up on screen, but the effect won't change
- * the text over time.
- */
- var_SetTime( p_text, "spu-duration", p_subpic->i_stop - p_subpic->i_start );
- var_SetTime( p_text, "spu-elapsed", render_date );
- var_SetBool( p_text, "text-rerender", false );
- var_SetInteger( p_text, "scale", i_min_scale_ratio );
- if( p_text->pf_render_html && p_region->psz_html )
- {
- p_text->pf_render_html( p_text, p_region, p_region );
- }
- else if( p_text->pf_render_text )
- {
- p_text->pf_render_text( p_text, p_region, p_region );
- }
- *pb_rerender_text = var_GetBool( p_text, "text-rerender" );
- exit:
- p_region->i_align |= SUBPICTURE_RENDERED;
- }
- /**
- * A few scale functions helpers.
- */
- static spu_scale_t spu_scale_create( int w, int h )
- {
- spu_scale_t s = { .w = w, .h = h };
- if( s.w <= 0 )
- s.w = SCALE_UNIT;
- if( s.h <= 0 )
- s.h = SCALE_UNIT;
- return s;
- }
- static spu_scale_t spu_scale_unit( void )
- {
- return spu_scale_create( SCALE_UNIT, SCALE_UNIT );
- }
- static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd )
- {
- return spu_scale_create( wn * SCALE_UNIT / wd,
- hn * SCALE_UNIT / hd );
- }
- static int spu_scale_w( int v, const spu_scale_t s )
- {
- return v * s.w / SCALE_UNIT;
- }
- static int spu_scale_h( int v, const spu_scale_t s )
- {
- return v * s.h / SCALE_UNIT;
- }
- static int spu_invscale_w( int v, const spu_scale_t s )
- {
- return v * SCALE_UNIT / s.w;
- }
- static int spu_invscale_h( int v, const spu_scale_t s )
- {
- return v * SCALE_UNIT / s.h;
- }
- /**
- * A few area functions helpers
- */
- static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t s )
- {
- spu_area_t a = { .i_x = x, .i_y = y, .i_width = w, .i_height = h, .scale = s };
- return a;
- }
- static spu_area_t spu_area_scaled( spu_area_t a )
- {
- if( a.scale.w == SCALE_UNIT && a.scale.h == SCALE_UNIT )
- return a;
- a.i_x = spu_scale_w( a.i_x, a.scale );
- a.i_y = spu_scale_h( a.i_y, a.scale );
- a.i_width = spu_scale_w( a.i_width, a.scale );
- a.i_height = spu_scale_h( a.i_height, a.scale );
- a.scale = spu_scale_unit();
- return a;
- }
- static spu_area_t spu_area_unscaled( spu_area_t a, spu_scale_t s )
- {
- if( a.scale.w == s.w && a.scale.h == s.h )
- return a;
- a = spu_area_scaled( a );
- a.i_x = spu_invscale_w( a.i_x, s );
- a.i_y = spu_invscale_h( a.i_y, s );
- a.i_width = spu_invscale_w( a.i_width, s );
- a.i_height = spu_invscale_h( a.i_height, s );
- a.scale = s;
- return a;
- }
- static bool spu_area_overlap( spu_area_t a, spu_area_t b )
- {
- const int i_dx = 0;
- const int i_dy = 0;
- a = spu_area_scaled( a );
- b = spu_area_scaled( b );
- 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 ) &&
- __MAX( a.i_y-i_dy, b.i_y ) < __MIN( a.i_y+a.i_height+i_dy, b.i_y+b.i_height );
- }
- /**
- * Avoid area overlapping
- */
- static void SpuAreaFixOverlap( spu_area_t *p_dst,
- const spu_area_t *p_master,
- const spu_area_t *p_sub, int i_sub, int i_align )
- {
- spu_area_t a = spu_area_scaled( *p_dst );
- bool b_moved = false;
- bool b_ok;
- assert( p_master->i_x == 0 && p_master->i_y == 0 );
- /* Check for overlap
- * XXX It is not fast O(n^2) but we should not have a lot of region */
- do
- {
- b_ok = true;
- for( int i = 0; i < i_sub; i++ )
- {
- spu_area_t sub = spu_area_scaled( p_sub[i] );
- if( !spu_area_overlap( a, sub ) )
- continue;
- if( i_align & SUBPICTURE_ALIGN_TOP )
- {
- /* We go down */
- int i_y = sub.i_y + sub.i_height;
- if( i_y + a.i_height > p_master->i_height )
- break;
- a.i_y = i_y;
- b_moved = true;
- }
- else if( i_align & SUBPICTURE_ALIGN_BOTTOM )
- {
- /* We go up */
- int i_y = sub.i_y - a.i_height;
- if( i_y < 0 )
- break;
- a.i_y = i_y;
- b_moved = true;
- }
- else
- {
- /* TODO what to do in this case? */
- //fprintf( stderr, "Overlap with unsupported alignmentn" );
- break;
- }
- b_ok = false;
- break;
- }
- } while( !b_ok );
- if( b_moved )
- *p_dst = spu_area_unscaled( a, p_dst->scale );
- }
- /**
- * Place a region
- */
- static void SpuRegionPlace( int *pi_x, int *pi_y,
- const subpicture_t *p_subpic,
- const subpicture_region_t *p_region,
- int i_margin_y )
- {
- const int i_delta_x = p_region->i_x;
- const int i_delta_y = p_region->i_y;
- int i_x, i_y;
- assert( p_region->i_x != INT_MAX && p_region->i_y != INT_MAX );
- if( p_region->i_align & SUBPICTURE_ALIGN_TOP )
- {
- i_y = i_delta_y;
- }
- else if( p_region->i_align & SUBPICTURE_ALIGN_BOTTOM )
- {
- i_y = p_subpic->i_original_picture_height - p_region->fmt.i_height - i_delta_y;
- }
- else
- {
- i_y = p_subpic->i_original_picture_height / 2 - p_region->fmt.i_height / 2;
- }
- if( p_region->i_align & SUBPICTURE_ALIGN_LEFT )
- {
- i_x = i_delta_x;
- }
- else if( p_region->i_align & SUBPICTURE_ALIGN_RIGHT )
- {
- i_x = p_subpic->i_original_picture_width - p_region->fmt.i_width - i_delta_x;
- }
- else
- {
- i_x = p_subpic->i_original_picture_width / 2 - p_region->fmt.i_width / 2;
- }
- if( p_subpic->b_absolute )
- {
- i_x = i_delta_x;
- i_y = i_delta_y;
- }
- /* Margin shifts all subpictures */
- if( i_margin_y != 0 )
- i_y -= i_margin_y;
- /* Clamp offset to not go out of the screen (when possible) */
- const int i_error_x = (i_x + p_region->fmt.i_width) - p_subpic->i_original_picture_width;
- if( i_error_x > 0 )
- i_x -= i_error_x;
- if( i_x < 0 )
- i_x = 0;
- const int i_error_y = (i_y + p_region->fmt.i_height) - p_subpic->i_original_picture_height;
- if( i_error_y > 0 )
- i_y -= i_error_y;
- if( i_y < 0 )
- i_y = 0;
- *pi_x = i_x;
- *pi_y = i_y;
- }
- /**
- * This function computes the current alpha value for a given region.
- */
- static int SpuRegionAlpha( subpicture_t *p_subpic, subpicture_region_t *p_region )
- {
- /* Compute alpha blend value */
- int i_fade_alpha = 255;
- if( p_subpic->b_fade )
- {
- mtime_t i_fade_start = ( p_subpic->i_stop +
- p_subpic->i_start ) / 2;
- mtime_t i_now = mdate();
- if( i_now >= i_fade_start && p_subpic->i_stop > i_fade_start )
- {
- i_fade_alpha = 255 * ( p_subpic->i_stop - i_now ) /
- ( p_subpic->i_stop - i_fade_start );
- }
- }
- return i_fade_alpha * p_subpic->i_alpha * p_region->i_alpha / 65025;
- }
- /**
- * It will render the provided region onto p_pic_dst.
- */
- static void SpuRenderRegion( spu_t *p_spu,
- picture_t *p_pic_dst, spu_area_t *p_area,
- subpicture_t *p_subpic, subpicture_region_t *p_region,
- const spu_scale_t scale_size,
- const video_format_t *p_fmt,
- const spu_area_t *p_subtitle_area, int i_subtitle_area,
- mtime_t render_date )
- {
- spu_private_t *p_sys = p_spu->p;
- video_format_t fmt_original = p_region->fmt;
- bool b_rerender_text = false;
- bool b_restore_format = false;
- int i_x_offset;
- int i_y_offset;
- video_format_t region_fmt;
- picture_t *p_region_picture;
- /* Invalidate area by default */
- *p_area = spu_area_create( 0,0, 0,0, scale_size );
- /* Render text region */
- if( p_region->fmt.i_chroma == VLC_FOURCC_TEXT )
- {
- const int i_min_scale_ratio = SCALE_UNIT; /* FIXME what is the right value? (scale_size is not) */
- SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region,
- i_min_scale_ratio, render_date );
- b_restore_format = b_rerender_text;
- /* Check if the rendering has failed ... */
- if( p_region->fmt.i_chroma == VLC_FOURCC_TEXT )
- goto exit;
- }
- /* Force palette if requested
- * FIXME b_force_palette and b_force_crop are applied to all subpictures using palette
- * instead of only the right one (being the dvd spu).
- */
- const bool b_using_palette = p_region->fmt.i_chroma == VLC_FOURCC_YUVP;
- const bool b_force_palette = b_using_palette && p_sys->b_force_palette;
- const bool b_force_crop = b_force_palette && p_sys->b_force_crop;
- bool b_changed_palette = false;
- /* Compute the margin which is expressed in destination pixel unit
- * The margin is applied only to subtitle and when no forced crop is
- * requested (dvd menu) */
- int i_margin_y = 0;
- if( !b_force_crop && p_subpic->b_subtitle )
- i_margin_y = spu_invscale_h( p_sys->i_margin, scale_size );
- /* Place the picture
- * We compute the position in the rendered size */
- SpuRegionPlace( &i_x_offset, &i_y_offset,
- p_subpic, p_region, i_margin_y );
- /* Save this position for subtitle overlap support
- * it is really important that there are given without scale_size applied */
- *p_area = spu_area_create( i_x_offset, i_y_offset,
- p_region->fmt.i_width, p_region->fmt.i_height,
- scale_size );
- /* Handle overlapping subtitles when possible */
- if( p_subpic->b_subtitle && !p_subpic->b_absolute )
- {
- spu_area_t display = spu_area_create( 0, 0, p_fmt->i_width, p_fmt->i_height,
- spu_scale_unit() );
- SpuAreaFixOverlap( p_area, &display, p_subtitle_area, i_subtitle_area,
- p_region->i_align );
- }
- /* Fix the position for the current scale_size */
- i_x_offset = spu_scale_w( p_area->i_x, p_area->scale );
- i_y_offset = spu_scale_h( p_area->i_y, p_area->scale );
- /* */
- if( b_force_palette )
- {
- video_palette_t *p_palette = p_region->fmt.p_palette;
- video_palette_t palette;
- /* We suppose DVD palette here */
- palette.i_entries = 4;
- for( int i = 0; i < 4; i++ )
- for( int j = 0; j < 4; j++ )
- palette.palette[i][j] = p_sys->palette[i][j];
- if( p_palette->i_entries == palette.i_entries )
- {
- for( int i = 0; i < p_palette->i_entries; i++ )
- for( int j = 0; j < 4; j++ )
- b_changed_palette |= p_palette->palette[i][j] != palette.palette[i][j];
- }
- else
- {
- b_changed_palette = true;
- }
- *p_palette = palette;
- }
- /* */
- region_fmt = p_region->fmt;
- p_region_picture = p_region->p_picture;
- /* Scale from rendered size to destination size */
- if( p_sys->p_scale && p_sys->p_scale->p_module &&
- ( !b_using_palette || ( p_sys->p_scale_yuvp && p_sys->p_scale_yuvp->p_module ) ) &&
- ( scale_size.w != SCALE_UNIT || scale_size.h != SCALE_UNIT || b_using_palette ) )
- {
- const unsigned i_dst_width = spu_scale_w( p_region->fmt.i_width, scale_size );
- const unsigned i_dst_height = spu_scale_h( p_region->fmt.i_height, scale_size );
- /* Destroy the cache if unusable */
- if( p_region->p_private )
- {
- subpicture_region_private_t *p_private = p_region->p_private;
- bool b_changed = false;
- /* Check resize changes */
- if( i_dst_width != p_private->fmt.i_width ||
- i_dst_height != p_private->fmt.i_height )
- b_changed = true;
- /* Check forced palette changes */
- if( b_changed_palette )
- b_changed = true;
- if( b_changed )
- {
- SpuRegionPrivateDelete( p_private );
- p_region->p_private = NULL;
- }
- }
- /* Scale if needed into cache */
- if( !p_region->p_private && i_dst_width > 0 && i_dst_height > 0 )
- {
- filter_t *p_scale = p_sys->p_scale;
- picture_t *p_picture = p_region->p_picture;
- picture_Hold( p_picture );
- /* Convert YUVP to YUVA/RGBA first for better scaling quality */
- if( b_using_palette )
- {
- filter_t *p_scale_yuvp = p_sys->p_scale_yuvp;
- p_scale_yuvp->fmt_in.video = p_region->fmt;
- /* TODO converting to RGBA for RGB video output is better */
- p_scale_yuvp->fmt_out.video = p_region->fmt;
- p_scale_yuvp->fmt_out.video.i_chroma = VLC_FOURCC_YUVA;
- p_picture = p_scale_yuvp->pf_video_filter( p_scale_yuvp, p_picture );
- if( !p_picture )
- {
- /* Well we will try conversion+scaling */
- msg_Warn( p_spu, "%4.4s to %4.4s conversion failed",
- (const char*)&p_scale_yuvp->fmt_in.video.i_chroma,
- (const char*)&p_scale_yuvp->fmt_out.video.i_chroma );
- }
- }
- /* Conversion(except from YUVP)/Scaling */
- if( p_picture &&
- ( p_picture->format.i_width != i_dst_width ||
- p_picture->format.i_height != i_dst_height ) )
- {
- p_scale->fmt_in.video = p_picture->format;
- p_scale->fmt_out.video = p_picture->format;
- p_scale->fmt_out.video.i_width = i_dst_width;
- p_scale->fmt_out.video.i_height = i_dst_height;
- p_scale->fmt_out.video.i_visible_width =
- spu_scale_w( p_region->fmt.i_visible_width, scale_size );
- p_scale->fmt_out.video.i_visible_height =
- spu_scale_h( p_region->fmt.i_visible_height, scale_size );
- p_picture = p_scale->pf_video_filter( p_scale, p_picture );
- if( !p_picture )
- msg_Err( p_spu, "scaling failed" );
- }
- /* */
- if( p_picture )
- {
- p_region->p_private = SpuRegionPrivateNew( &p_picture->format );
- if( p_region->p_private )
- {
- p_region->p_private->p_picture = p_picture;
- if( !p_region->p_private->p_picture )
- {
- SpuRegionPrivateDelete( p_region->p_private );
- p_region->p_private = NULL;
- }
- }
- else
- {
- picture_Release( p_picture );
- }
- }
- }
- /* And use the scaled picture */
- if( p_region->p_private )
- {
- region_fmt = p_region->p_private->fmt;
- p_region_picture = p_region->p_private->p_picture;
- }
- }
- /* Force cropping if requested */
- if( b_force_crop )
- {
- int i_crop_x = spu_scale_w( p_sys->i_crop_x, scale_size );
- int i_crop_y = spu_scale_h( p_sys->i_crop_y, scale_size );
- int i_crop_width = spu_scale_w( p_sys->i_crop_width, scale_size );
- int i_crop_height= spu_scale_h( p_sys->i_crop_height,scale_size );
- /* Find the intersection */
- if( i_crop_x + i_crop_width <= i_x_offset ||
- i_x_offset + (int)region_fmt.i_visible_width < i_crop_x ||
- i_crop_y + i_crop_height <= i_y_offset ||
- i_y_offset + (int)region_fmt.i_visible_height < i_crop_y )
- {
- /* No intersection */
- region_fmt.i_visible_width =
- region_fmt.i_visible_height = 0;
- }
- else
- {
- int i_x, i_y, i_x_end, i_y_end;
- i_x = __MAX( i_crop_x, i_x_offset );
- i_y = __MAX( i_crop_y, i_y_offset );
- i_x_end = __MIN( i_crop_x + i_crop_width,
- i_x_offset + (int)region_fmt.i_visible_width );
- i_y_end = __MIN( i_crop_y + i_crop_height,
- i_y_offset + (int)region_fmt.i_visible_height );
- region_fmt.i_x_offset = i_x - i_x_offset;
- region_fmt.i_y_offset = i_y - i_y_offset;
- region_fmt.i_visible_width = i_x_end - i_x;
- region_fmt.i_visible_height = i_y_end - i_y;
- i_x_offset = __MAX( i_x, 0 );
- i_y_offset = __MAX( i_y, 0 );
- }
- }
- /* Update the blender */
- SpuRenderUpdateBlend( p_spu, p_fmt->i_width, p_fmt->i_height, ®ion_fmt );
- if( p_sys->p_blend->p_module )
- {
- const int i_alpha = SpuRegionAlpha( p_subpic, p_region );
- p_sys->p_blend->pf_video_blend( p_sys->p_blend, p_pic_dst,
- p_region_picture, i_x_offset, i_y_offset, i_alpha );
- }
- else
- {
- msg_Err( p_spu, "blending %4.4s to %4.4s failed",
- (char *)&p_sys->p_blend->fmt_out.video.i_chroma,
- (char *)&p_sys->p_blend->fmt_out.video.i_chroma );
- }
- exit:
- if( b_rerender_text )
- {
- /* Some forms of subtitles need to be re-rendered more than
- * once, eg. karaoke. We therefore restore the region to its
- * pre-rendered state, so the next time through everything is
- * calculated again.
- */
- if( p_region->p_picture )
- {
- picture_Release( p_region->p_picture );
- p_region->p_picture = NULL;
- }
- if( p_region->p_private )
- {
- SpuRegionPrivateDelete( p_region->p_private );
- p_region->p_private = NULL;
- }
- p_region->i_align &= ~SUBPICTURE_RENDERED;
- }
- if( b_restore_format )
- p_region->fmt = fmt_original;
- }
- /**
- * This function compares two 64 bits integers.
- * It can be used by qsort.
- */
- static int IntegerCmp( int64_t i0, int64_t i1 )
- {
- return i0 < i1 ? -1 : i0 > i1 ? 1 : 0;
- }
- /**
- * This function compares 2 subpictures using the following properties
- * (ordered by priority)
- * 1. absolute positionning
- * 2. start time
- * 3. creation order (per channel)
- *
- * It can be used by qsort.
- *
- * XXX spu_RenderSubpictures depends heavily on this order.
- */
- static int SubpictureCmp( const void *s0, const void *s1 )
- {
- subpicture_t *p_subpic0 = *(subpicture_t**)s0;
- subpicture_t *p_subpic1 = *(subpicture_t**)s1;
- int r;
- r = IntegerCmp( !p_subpic0->b_absolute, !p_subpic1->b_absolute );
- if( !r )
- r = IntegerCmp( p_subpic0->i_start, p_subpic1->i_start );
- if( !r )
- r = IntegerCmp( p_subpic0->i_channel, p_subpic1->i_channel );
- if( !r )
- r = IntegerCmp( p_subpic0->i_order, p_subpic1->i_order );
- return r;
- }
- /*****************************************************************************
- * SpuClearChannel: clear an spu channel
- *****************************************************************************
- * This function destroys the subpictures which belong to the spu channel
- * corresponding to i_channel_id.
- *****************************************************************************/
- static void SpuClearChannel( spu_t *p_spu, int i_channel )
- {
- spu_private_t *p_sys = p_spu->p;
- int i_subpic; /* subpicture index */
- vlc_mutex_lock( &p_sys->lock );
- for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
- {
- spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_subpic];
- subpicture_t *p_subpic = p_entry->p_subpicture;
- if( !p_subpic )
- continue;
- if( p_subpic->i_channel != i_channel && ( i_channel != -1 || p_subpic->i_channel == DEFAULT_CHAN ) )
- continue;
- /* You cannot delete subpicture outside of spu_SortSubpictures */
- p_entry->b_reject = true;
- }
- vlc_mutex_unlock( &p_sys->lock );
- }
- /*****************************************************************************
- * spu_ControlDefault: default methods for the subpicture unit control.
- *****************************************************************************/
- static int SpuControl( spu_t *p_spu, int i_query, va_list args )
- {
- spu_private_t *p_sys = p_spu->p;
- int *pi, i;
- switch( i_query )
- {
- case SPU_CHANNEL_REGISTER:
- pi = (int *)va_arg( args, int * );
- vlc_mutex_lock( &p_sys->lock );
- if( pi )
- *pi = p_sys->i_channel++;
- vlc_mutex_unlock( &p_sys->lock );
- break;
- case SPU_CHANNEL_CLEAR:
- i = (int)va_arg( args, int );
- SpuClearChannel( p_spu, i );
- break;
- default:
- msg_Dbg( p_spu, "control query not supported" );
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Object variables callbacks
- *****************************************************************************/
- /*****************************************************************************
- * UpdateSPU: update subpicture settings
- *****************************************************************************
- * This function is called from CropCallback and at initialization time, to
- * retrieve crop information from the input.
- *****************************************************************************/
- static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
- {
- spu_private_t *p_sys = p_spu->p;
- vlc_value_t val;
- vlc_mutex_lock( &p_sys->lock );
- p_sys->b_force_palette = false;
- p_sys->b_force_crop = false;
- if( var_Get( p_object, "highlight", &val ) || !val.b_bool )
- {
- vlc_mutex_unlock( &p_sys->lock );
- return;
- }
- p_sys->b_force_crop = true;
- p_sys->i_crop_x = var_GetInteger( p_object, "x-start" );
- p_sys->i_crop_y = var_GetInteger( p_object, "y-start" );
- p_sys->i_crop_width = var_GetInteger( p_object, "x-end" ) - p_sys->i_crop_x;
- p_sys->i_crop_height = var_GetInteger( p_object, "y-end" ) - p_sys->i_crop_y;
- if( var_Get( p_object, "menu-palette", &val ) == VLC_SUCCESS )
- {
- memcpy( p_sys->palette, val.p_address, 16 );
- p_sys->b_force_palette = true;
- }
- vlc_mutex_unlock( &p_sys->lock );
- msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
- p_sys->i_crop_x, p_sys->i_crop_y,
- p_sys->i_crop_width, p_sys->i_crop_height,
- p_sys->b_force_palette );
- }
- /*****************************************************************************
- * CropCallback: called when the highlight properties are changed
- *****************************************************************************
- * This callback is called from the input thread when we need cropping
- *****************************************************************************/
- static int CropCallback( vlc_object_t *p_object, char const *psz_var,
- vlc_value_t oldval, vlc_value_t newval, void *p_data )
- {
- VLC_UNUSED(oldval); VLC_UNUSED(newval); VLC_UNUSED(psz_var);
- UpdateSPU( (spu_t *)p_data, p_object );
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Buffers allocation callbacks for the filters
- *****************************************************************************/
- struct filter_owner_sys_t
- {
- spu_t *p_spu;
- int i_channel;
- };
- static subpicture_t *sub_new_buffer( filter_t *p_filter )
- {
- filter_owner_sys_t *p_sys = p_filter->p_owner;
- subpicture_t *p_subpicture = subpicture_New();
- if( p_subpicture )
- p_subpicture->i_channel = p_sys->i_channel;
- return p_subpicture;
- }
- static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
- {
- VLC_UNUSED( p_filter );
- subpicture_Delete( p_subpic );
- }
- static subpicture_t *spu_new_buffer( filter_t *p_filter )
- {
- VLC_UNUSED(p_filter);
- return subpicture_New();
- }
- static void spu_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
- {
- VLC_UNUSED(p_filter);
- subpicture_Delete( p_subpic );
- }
- static picture_t *spu_new_video_buffer( filter_t *p_filter )
- {
- const video_format_t *p_fmt = &p_filter->fmt_out.video;
- VLC_UNUSED(p_filter);
- return picture_New( p_fmt->i_chroma,
- p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
- }
- static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_picture )
- {
- VLC_UNUSED(p_filter);
- picture_Release( p_picture );
- }
- static int SubFilterAllocationInit( filter_t *p_filter, void *p_data )
- {
- spu_t *p_spu = p_data;
- filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
- if( !p_sys )
- return VLC_EGENERIC;
- p_filter->pf_sub_buffer_new = sub_new_buffer;
- p_filter->pf_sub_buffer_del = sub_del_buffer;
- p_filter->p_owner = p_sys;
- spu_Control( p_spu, SPU_CHANNEL_REGISTER, &p_sys->i_channel );
- p_sys->p_spu = p_spu;
- return VLC_SUCCESS;
- }
- static void SubFilterAllocationClean( filter_t *p_filter )
- {
- filter_owner_sys_t *p_sys = p_filter->p_owner;
- SpuClearChannel( p_sys->p_spu, p_sys->i_channel );
- free( p_filter->p_owner );
- }
- static int SubFilterCallback( vlc_object_t *p_object, char const *psz_var,
- vlc_value_t oldval, vlc_value_t newval, void *p_data )
- {
- spu_t *p_spu = p_data;
- spu_private_t *p_sys = p_spu->p;
- VLC_UNUSED(p_object); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
- vlc_mutex_lock( &p_sys->lock );
- free( p_sys->psz_chain_update );
- p_sys->psz_chain_update = strdup( newval.psz_string );
- vlc_mutex_unlock( &p_sys->lock );
- return VLC_SUCCESS;
- }