/*****************************************************************************
* vout_subpictures.c : subpicture management functions
*****************************************************************************
* Copyright (C) 2000-2007 the VideoLAN team
* $Id$
*
* 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 <assert.h>
/*****************************************************************************
* Local prototypes
*****************************************************************************/
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 spu_vaControlDefault( spu_t *, int, va_list );
static subpicture_t *sub_new_buffer( filter_t * );
static void sub_del_buffer( filter_t *, subpicture_t * );
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 * );
static int spu_ParseChain( spu_t * );
static int SubFilterCallback( vlc_object_t *, char const *,
vlc_value_t, vlc_value_t, void * );
static int sub_filter_allocation_init( filter_t *, void * );
static void sub_filter_allocation_clear( filter_t * );
struct filter_owner_sys_t
{
spu_t *p_spu;
int i_channel;
};
enum {
SCALE_DEFAULT,
SCALE_TEXT,
SCALE_SIZE
};
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 );
}
/**
* Creates the subpicture unit
*
* \param p_this the parent object which creates the subpicture unit
*/
spu_t *__spu_Create( vlc_object_t *p_this )
{
int i_index;
spu_t *p_spu = vlc_custom_create( p_this, sizeof( spu_t ),
VLC_OBJECT_GENERIC, "subpicture" );
for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
{
p_spu->p_subpicture[i_index].i_status = FREE_SUBPICTURE;
}
p_spu->p_blend = NULL;
p_spu->p_text = NULL;
p_spu->p_scale = NULL;
p_spu->p_scale_yuvp = NULL;
p_spu->pf_control = spu_vaControlDefault;
/* Register the default subpicture channel */
p_spu->i_channel = 2;
vlc_mutex_init( &p_spu->subpicture_lock );
vlc_object_attach( p_spu, p_this );
p_spu->p_chain = filter_chain_New( p_spu, "sub filter", false,
sub_filter_allocation_init,
sub_filter_allocation_clear,
p_spu );
return p_spu;
}
/**
* Initialise the subpicture unit
*
* \param p_spu the subpicture unit object
*/
int spu_Init( spu_t *p_spu )
{
vlc_value_t val;
/* If the user requested a sub margin, we force the position. */
var_Create( p_spu, "sub-margin", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Get( p_spu, "sub-margin", &val );
p_spu->i_margin = val.i_int;
var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
var_AddCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
spu_ParseChain( p_spu );
return VLC_SUCCESS;
}
int spu_ParseChain( spu_t *p_spu )
{
char *psz_parser = var_GetString( p_spu, "sub-filter" );
if( filter_chain_AppendFromString( p_spu->p_chain, psz_parser ) < 0 )
{
free( psz_parser );
return VLC_EGENERIC;
}
free( psz_parser );
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 )
{
int i_index;
/* Destroy all remaining subpictures */
for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
{
if( p_spu->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
{
spu_DestroySubpicture( p_spu, &p_spu->p_subpicture[i_index] );
}
}
if( p_spu->p_blend )
FilterRelease( p_spu->p_blend );
if( p_spu->p_text )
FilterRelease( p_spu->p_text );
if( p_spu->p_scale_yuvp )
FilterRelease( p_spu->p_scale_yuvp );
if( p_spu->p_scale )
FilterRelease( p_spu->p_scale );
filter_chain_Delete( p_spu->p_chain );
vlc_mutex_destroy( &p_spu->subpicture_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 );
}
}
/**
* Create a subpicture region
*
* \param p_this vlc_object_t
* \param p_fmt the format that this subpicture region should have
*/
static void RegionPictureRelease( picture_t *p_pic )
{
free( p_pic->p_data_orig );
/* We use pf_release nullity to know if the picture has already been released. */
p_pic->pf_release = NULL;
}
subpicture_region_t *__spu_CreateRegion( vlc_object_t *p_this,
video_format_t *p_fmt )
{
subpicture_region_t *p_region = malloc( sizeof(subpicture_region_t) );
if( !p_region ) return NULL;
memset( p_region, 0, sizeof(subpicture_region_t) );
p_region->i_alpha = 0xff;
p_region->p_next = NULL;
p_region->p_cache = NULL;
p_region->fmt = *p_fmt;
p_region->psz_text = NULL;
p_region->p_style = NULL;
if( p_fmt->i_chroma == VLC_FOURCC('Y','U','V','P') )
p_fmt->p_palette = p_region->fmt.p_palette =
malloc( sizeof(video_palette_t) );
else p_fmt->p_palette = p_region->fmt.p_palette = NULL;
p_region->picture.p_data_orig = NULL;
if( p_fmt->i_chroma == VLC_FOURCC('T','E','X','T') ) return p_region;
vout_AllocatePicture( p_this, &p_region->picture, p_fmt->i_chroma,
p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
if( !p_region->picture.i_planes )
{
free( p_region );
free( p_fmt->p_palette );
return NULL;
}
p_region->picture.pf_release = RegionPictureRelease;
return p_region;
}
/**
* Make a subpicture region from an existing picture_t
*
* \param p_this vlc_object_t
* \param p_fmt the format that this subpicture region should have
* \param p_pic a pointer to the picture creating the region (not freed)
*/
subpicture_region_t *__spu_MakeRegion( vlc_object_t *p_this,
video_format_t *p_fmt,
picture_t *p_pic )
{
subpicture_region_t *p_region = malloc( sizeof(subpicture_region_t) );
(void)p_this;
if( !p_region ) return NULL;
memset( p_region, 0, sizeof(subpicture_region_t) );
p_region->i_alpha = 0xff;
p_region->p_next = 0;
p_region->p_cache = 0;
p_region->fmt = *p_fmt;
p_region->psz_text = 0;
p_region->p_style = NULL;
if( p_fmt->i_chroma == VLC_FOURCC('Y','U','V','P') )
p_fmt->p_palette = p_region->fmt.p_palette =
malloc( sizeof(video_palette_t) );
else p_fmt->p_palette = p_region->fmt.p_palette = NULL;
memcpy( &p_region->picture, p_pic, sizeof(picture_t) );
p_region->picture.pf_release = RegionPictureRelease;
return p_region;
}
/**
* Destroy a subpicture region
*
* \param p_this vlc_object_t
* \param p_region the subpicture region to destroy
*/
void __spu_DestroyRegion( vlc_object_t *p_this, subpicture_region_t *p_region )
{
if( !p_region ) return;
if( p_region->picture.pf_release )
p_region->picture.pf_release( &p_region->picture );
free( p_region->fmt.p_palette );
if( p_region->p_cache ) __spu_DestroyRegion( p_this, p_region->p_cache );
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 );
}
/**
* 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 )
{
/* Check if status is valid */
if( p_subpic->i_status != RESERVED_SUBPICTURE )
{
msg_Err( p_spu, "subpicture %p has invalid status #%d",
p_subpic, p_subpic->i_status );
}
/* Remove reservation flag */
p_subpic->i_status = READY_SUBPICTURE;
if( p_subpic->i_channel == DEFAULT_CHAN )
{
p_subpic->i_channel = 0xFFFF;
spu_Control( p_spu, SPU_CHANNEL_CLEAR, DEFAULT_CHAN );
p_subpic->i_channel = DEFAULT_CHAN;
}
}
/**
* Allocate a subpicture in the spu heap.
*
* This function create a reserved subpicture in the spu heap.
* A null pointer is returned if the function fails. This method provides an
* already allocated zone of memory in the spu data fields. It needs locking
* since several pictures can be created by several producers threads.
* \param p_spu the subpicture unit in which to create the subpicture
* \return NULL on error, a reserved subpicture otherwise
*/
subpicture_t *spu_CreateSubpicture( spu_t *p_spu )
{
int i_subpic; /* subpicture index */
subpicture_t * p_subpic = NULL; /* first free subpicture */
/* Get lock */
vlc_mutex_lock( &p_spu->subpicture_lock );
/*
* Look for an empty place
*/
p_subpic = NULL;
for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
{
if( p_spu->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE )
{
/* Subpicture is empty and ready for allocation */
p_subpic = &p_spu->p_subpicture[i_subpic];
p_spu->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
break;
}
}
/* If no free subpicture could be found */
if( p_subpic == NULL )
{
msg_Err( p_spu, "subpicture heap is full" );
vlc_mutex_unlock( &p_spu->subpicture_lock );
return NULL;
}
/* Copy subpicture information, set some default values */
memset( p_subpic, 0, sizeof(subpicture_t) );
p_subpic->i_status = RESERVED_SUBPICTURE;
p_subpic->b_absolute = true;
p_subpic->b_pausable = false;
p_subpic->b_fade = 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;
vlc_mutex_unlock( &p_spu->subpicture_lock );
p_subpic->pf_create_region = __spu_CreateRegion;
p_subpic->pf_make_region = __spu_MakeRegion;
p_subpic->pf_destroy_region = __spu_DestroyRegion;
return p_subpic;
}
/**
* Remove a subpicture from the heap
*
* This function frees a previously reserved subpicture.
* It is meant to be used when the construction of a picture aborted.
* This function does not need locking since reserved subpictures are ignored
* by the spu.
*/
void spu_DestroySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
{
/* Get lock */
vlc_mutex_lock( &p_spu->subpicture_lock );
/* There can be race conditions so we need to check the status */
if( p_subpic->i_status == FREE_SUBPICTURE )
{
vlc_mutex_unlock( &p_spu->subpicture_lock );
return;
}
/* Check if status is valid */
if( ( p_subpic->i_status != RESERVED_SUBPICTURE )
&& ( p_subpic->i_status != READY_SUBPICTURE ) )
{
msg_Err( p_spu, "subpicture %p has invalid status %d",
p_subpic, p_subpic->i_status );
}
while( p_subpic->p_region )
{
subpicture_region_t *p_region = p_subpic->p_region;
p_subpic->p_region = p_region->p_next;
spu_DestroyRegion( p_spu, p_region );
}
if( p_subpic->pf_destroy )
{
p_subpic->pf_destroy( p_subpic );
}
p_subpic->i_status = FREE_SUBPICTURE;
vlc_mutex_unlock( &p_spu->subpicture_lock );
}
/*****************************************************************************
* spu_RenderSubpictures: render a subpicture list
*****************************************************************************
* This function renders all sub picture units in the list.
*****************************************************************************/
static void SpuRenderCreateBlend( spu_t *p_spu, vlc_fourcc_t i_chroma, int i_aspect )
{
filter_t *p_blend;
assert( !p_spu->p_blend );
p_spu->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 = i_chroma;
p_blend->fmt_out.video.i_aspect = i_aspect;
/* 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_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", 0, 0 );
}
static void SpuRenderCreateAndLoadText( spu_t *p_spu, int i_width, int i_height )
{
filter_t *p_text;
assert( !p_spu->p_text );
p_spu->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 = i_width;
p_text->fmt_out.video.i_height =
p_text->fmt_out.video.i_visible_height = i_height;
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 );
}
static filter_t *CreateAndLoadScale( vlc_object_t *p_obj, vlc_fourcc_t i_chroma )
{
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_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_chroma;
p_scale->fmt_out.video.i_width =
p_scale->fmt_out.video.i_height = 16;
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", 0, 0 );
return p_scale;
}
static void SpuRenderCreateAndLoadScale( spu_t *p_spu )
{
/* FIXME: We'll also be using it for YUVA and RGBA blending ... */
assert( !p_spu->p_scale );
assert( !p_spu->p_scale_yuvp );
p_spu->p_scale = CreateAndLoadScale( VLC_OBJECT(p_spu), VLC_FOURCC('Y','U','V','A') );
p_spu->p_scale_yuvp = p_spu->p_scale_yuvp = CreateAndLoadScale( VLC_OBJECT(p_spu), VLC_FOURCC('Y','U','V','P') );
}
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 )
{
assert( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') );
if( !p_spu->p_text || !p_spu->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.
*/
/* FIXME why these variables are recreated every time and not
* when text renderer module was created ? */
var_Create( p_spu->p_text, "spu-duration", VLC_VAR_TIME );
var_Create( p_spu->p_text, "spu-elapsed", VLC_VAR_TIME );
var_Create( p_spu->p_text, "text-rerender", VLC_VAR_BOOL );
var_Create( p_spu->p_text, "scale", VLC_VAR_INTEGER );
var_SetTime( p_spu->p_text, "spu-duration", p_subpic->i_stop - p_subpic->i_start );
var_SetTime( p_spu->p_text, "spu-elapsed", mdate() - p_subpic->i_start );
var_SetBool( p_spu->p_text, "text-rerender", false );
var_SetInteger( p_spu->p_text, "scale", i_min_scale_ratio );
if( p_spu->p_text->pf_render_html && p_region->psz_html )
{
p_spu->p_text->pf_render_html( p_spu->p_text,
p_region, p_region );
}
else if( p_spu->p_text->pf_render_text )
{
p_spu->p_text->pf_render_text( p_spu->p_text,
p_region, p_region );
}
*pb_rerender_text = var_GetBool( p_spu->p_text, "text-rerender" );
var_Destroy( p_spu->p_text, "spu-duration" );
var_Destroy( p_spu->p_text, "spu-elapsed" );
var_Destroy( p_spu->p_text, "text-rerender" );
var_Destroy( p_spu->p_text, "scale" );
exit:
p_region->i_align |= SUBPICTURE_RENDERED;
}
static void SpuRenderRegion( spu_t *p_spu,
picture_t *p_pic_dst, picture_t *p_pic_src,
subpicture_t *p_subpic, subpicture_region_t *p_region,
const int i_scale_width_orig, const int i_scale_height_orig,
const int pi_subpic_x[SCALE_SIZE],
const int pi_scale_width[SCALE_SIZE],
const int pi_scale_height[SCALE_SIZE],
const video_format_t *p_fmt )
{
video_format_t fmt_original;
bool b_rerender_text;
bool b_restore_format = false;
int i_fade_alpha;
int i_x_offset;
int i_y_offset;
int i_scale_idx;
int i_inv_scale_x;
int i_inv_scale_y;
filter_t *p_scale;
vlc_assert_locked( &p_spu->subpicture_lock );
fmt_original = p_region->fmt;
b_rerender_text = false;
if( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
{
SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region, __MIN(i_scale_width_orig, i_scale_height_orig) );
b_restore_format = b_rerender_text;
/* Check if the rendering has failed ... */
if( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
goto exit;
}
if( p_region->i_align & SUBPICTURE_RENDERED )
{
/* We are using a region which come from rendered text */
i_scale_idx = SCALE_TEXT;
i_inv_scale_x = i_scale_width_orig;
i_inv_scale_y = i_scale_height_orig;
}
else
{
i_scale_idx = SCALE_DEFAULT;
i_inv_scale_x = 1000;
i_inv_scale_y = 1000;
}
i_x_offset = (p_region->i_x + pi_subpic_x[ i_scale_idx ]) * i_inv_scale_x / 1000;
i_y_offset = (p_region->i_y + p_subpic->i_y) * i_inv_scale_y / 1000;
/* 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('Y','U','V','P');
const bool b_force_palette = b_using_palette && p_spu->b_force_palette;
const bool b_force_crop = b_force_palette && p_spu->b_force_crop;
if( b_force_palette )
{
/* It looks so wrong I won't comment
* p_palette->palette is [256][4] with a int i_entries
* p_spu->palette is [4][4]
* */
p_region->fmt.p_palette->i_entries = 4;
memcpy( p_region->fmt.p_palette->palette, p_spu->palette, 4*sizeof(uint32_t) );
}
if( b_using_palette )
p_scale = p_spu->p_scale_yuvp;
else
p_scale = p_spu->p_scale;
if( p_scale &&
( ( pi_scale_width[i_scale_idx] > 0 && pi_scale_width[i_scale_idx] != 1000 ) ||
( pi_scale_height[i_scale_idx] > 0 && pi_scale_height[i_scale_idx] != 1000 ) ||
( b_force_palette ) ) )
{
const unsigned i_dst_width = p_region->fmt.i_width * pi_scale_width[i_scale_idx] / 1000;
const unsigned i_dst_height = p_region->fmt.i_height * pi_scale_height[i_scale_idx] / 1000;
/* Destroy if cache is unusable */
if( p_region->p_cache )
{
if( p_region->p_cache->fmt.i_width != i_dst_width ||
p_region->p_cache->fmt.i_height != i_dst_height ||
b_force_palette )
{
p_subpic->pf_destroy_region( VLC_OBJECT(p_spu),
p_region->p_cache );
p_region->p_cache = NULL;
}
}
/* Scale if needed into cache */
if( !p_region->p_cache )
{
picture_t *p_pic;
p_scale->fmt_in.video = p_region->fmt;
p_scale->fmt_out.video = p_region->fmt;
p_region->p_cache =
p_subpic->pf_create_region( VLC_OBJECT(p_spu),
&p_scale->fmt_out.video );
p_region->p_cache->p_next = p_region->p_next;
if( p_scale->fmt_out.video.p_palette )
*p_scale->fmt_out.video.p_palette =
*p_region->fmt.p_palette;
vout_CopyPicture( p_spu, &p_region->p_cache->picture,
&p_region->picture );
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 =
p_region->fmt.i_visible_width * pi_scale_width[ i_scale_idx ] / 1000;
p_scale->fmt_out.video.i_visible_height =
p_region->fmt.i_visible_height * pi_scale_height[ i_scale_idx ] / 1000;
p_region->p_cache->fmt = p_scale->fmt_out.video;
p_region->p_cache->i_x = p_region->i_x * pi_scale_width[ i_scale_idx ] / 1000;
p_region->p_cache->i_y = p_region->i_y * pi_scale_height[ i_scale_idx ] / 1000;
p_region->p_cache->i_align = p_region->i_align;
p_region->p_cache->i_alpha = p_region->i_alpha;
p_pic = NULL;
if( p_scale->p_module )
p_pic = p_scale->pf_video_filter( p_scale, &p_region->p_cache->picture );
else
msg_Err( p_spu, "scaling failed (module not loaded)" );
if( p_pic )
{
p_region->p_cache->picture = *p_pic;
free( p_pic );
}
}
/* And use the scaled picture */
if( p_region->p_cache )
{
p_region = p_region->p_cache;
fmt_original = p_region->fmt;
}
}
if( p_region->i_align & SUBPICTURE_ALIGN_BOTTOM )
{
i_y_offset = p_fmt->i_height - p_region->fmt.i_height -
(p_subpic->i_y + p_region->i_y) * i_inv_scale_y / 1000;
}
else if ( !(p_region->i_align & SUBPICTURE_ALIGN_TOP) )
{
i_y_offset = p_fmt->i_height / 2 - p_region->fmt.i_height / 2;
}
if( p_region->i_align & SUBPICTURE_ALIGN_RIGHT )
{
i_x_offset = p_fmt->i_width - p_region->fmt.i_width -
(pi_subpic_x[ i_scale_idx ] + p_region->i_x)
* i_inv_scale_x / 1000;
}
else if ( !(p_region->i_align & SUBPICTURE_ALIGN_LEFT) )
{
i_x_offset = p_fmt->i_width / 2 - p_region->fmt.i_width / 2;
}
if( p_subpic->b_absolute )
{
i_x_offset = (p_region->i_x +
pi_subpic_x[ i_scale_idx ] *
pi_scale_width[ i_scale_idx ] / 1000)
* i_inv_scale_x / 1000;
i_y_offset = (p_region->i_y +
p_subpic->i_y * pi_scale_height[ i_scale_idx ] / 1000)
* i_inv_scale_y / 1000;
}
i_x_offset = __MAX( i_x_offset, 0 );
i_y_offset = __MAX( i_y_offset, 0 );
if( p_spu->i_margin != 0 && !b_force_crop )
{
int i_diff = 0;
int i_low = (i_y_offset - p_spu->i_margin) * i_inv_scale_y / 1000;
int i_high = i_low + p_region->fmt.i_height;
/* crop extra margin to keep within bounds */
if( i_low < 0 )
i_diff = i_low;
if( i_high > (int)p_fmt->i_height )
i_diff = i_high - p_fmt->i_height;
i_y_offset -= ( p_spu->i_margin * i_inv_scale_y / 1000 + i_diff );
}
/* Force cropping if requested */
if( b_force_crop )
{
video_format_t *p_fmt = &p_region->fmt;
int i_crop_x = p_spu->i_crop_x * pi_scale_width[ i_scale_idx ] / 1000
* i_inv_scale_x / 1000;
int i_crop_y = p_spu->i_crop_y * pi_scale_height[ i_scale_idx ] / 1000
* i_inv_scale_y / 1000;
int i_crop_width = p_spu->i_crop_width * pi_scale_width[ i_scale_idx ] / 1000
* i_inv_scale_x / 1000;
int i_crop_height = p_spu->i_crop_height * pi_scale_height[ i_scale_idx ] / 1000
* i_inv_scale_y / 1000;
/* Find the intersection */
if( i_crop_x + i_crop_width <= i_x_offset ||
i_x_offset + (int)p_fmt->i_visible_width < i_crop_x ||
i_crop_y + i_crop_height <= i_y_offset ||
i_y_offset + (int)p_fmt->i_visible_height < i_crop_y )
{
/* No intersection */
p_fmt->i_visible_width = p_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)p_fmt->i_visible_width );
i_y_end = __MIN( i_crop_y + i_crop_height,
i_y_offset + (int)p_fmt->i_visible_height );
p_fmt->i_x_offset = i_x - i_x_offset;
p_fmt->i_y_offset = i_y - i_y_offset;
p_fmt->i_visible_width = i_x_end - i_x;
p_fmt->i_visible_height = i_y_end - i_y;
i_x_offset = i_x;
i_y_offset = i_y;
}
b_restore_format = true;
}
i_x_offset = __MAX( i_x_offset, 0 );
i_y_offset = __MAX( i_y_offset, 0 );
/* Compute alpha blend value */
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 );
}
}
/* Update the blender */
SpuRenderUpdateBlend( p_spu, p_fmt->i_width, p_fmt->i_height, &p_region->fmt );
if( p_spu->p_blend->p_module )
{
p_spu->p_blend->pf_video_blend( p_spu->p_blend, p_pic_dst,
p_pic_src, &p_region->picture, i_x_offset, i_y_offset,
i_fade_alpha * p_subpic->i_alpha * p_region->i_alpha / 65025 );
}
else
{
msg_Err( p_spu, "blending %4.4s to %4.4s failed",
(char *)&p_spu->p_blend->fmt_out.video.i_chroma,
(char *)&p_spu->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.
*/
p_region->picture.pf_release( &p_region->picture );
memset( &p_region->picture, 0, sizeof( picture_t ) );
p_region->i_align &= ~SUBPICTURE_RENDERED;
}
if( b_restore_format )
p_region->fmt = fmt_original;
}
void spu_RenderSubpictures( spu_t *p_spu, video_format_t *p_fmt,
picture_t *p_pic_dst, picture_t *p_pic_src,
subpicture_t *p_subpic,
int i_scale_width_orig, int i_scale_height_orig )
{
int i_source_video_width;
int i_source_video_height;
subpicture_t *p_subpic_v;
/* Get lock */
vlc_mutex_lock( &p_spu->subpicture_lock );
for( p_subpic_v = p_subpic;
p_subpic_v != NULL && p_subpic_v->i_status != FREE_SUBPICTURE;
p_subpic_v = p_subpic_v->p_next )
{
if( p_subpic_v->pf_pre_render )
p_subpic_v->pf_pre_render( p_fmt, p_spu, p_subpic_v );
}
if( i_scale_width_orig <= 0 )
i_scale_width_orig = 1000;
if( i_scale_height_orig <= 0 )
i_scale_height_orig = 1000;
i_source_video_width = p_fmt->i_width * 1000 / i_scale_width_orig;
i_source_video_height = p_fmt->i_height * 1000 / i_scale_height_orig;
/* Check i_status again to make sure spudec hasn't destroyed the subpic */
for( ; ( p_subpic != NULL ) && ( p_subpic->i_status != FREE_SUBPICTURE ); p_subpic = p_subpic->p_next )
{
subpicture_region_t *p_region;
int pi_scale_width[ SCALE_SIZE ];
int pi_scale_height[ SCALE_SIZE ];
int pi_subpic_x[ SCALE_SIZE ];
int k;
/* If the source video and subtitles stream agree on the size of
* the video then disregard all further references to the subtitle
* stream.
*/
if( ( i_source_video_height == p_subpic->i_original_picture_height ) &&
( i_source_video_width == p_subpic->i_original_picture_width ) )
{
/* FIXME this looks wrong */
p_subpic->i_original_picture_height = 0;
p_subpic->i_original_picture_width = 0;
}
for( k = 0; k < SCALE_SIZE ; k++ )
pi_subpic_x[ k ] = p_subpic->i_x;
if( p_subpic->pf_update_regions )
{
/* TODO do not reverse the scaling that was done before calling
* spu_RenderSubpictures, just pass it along (or do it inside
* spu_RenderSubpictures) */
video_format_t fmt_org = *p_fmt;
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( &fmt_org, p_spu, p_subpic, mdate() );
}
/* */
p_region = p_subpic->p_region;
if( !p_region )
continue;
/* Create the blending module */
if( !p_spu->p_blend )
SpuRenderCreateBlend( p_spu, p_fmt->i_chroma, p_fmt->i_aspect );
/* Load the text rendering module; it is possible there is a
* text region somewhere in the subpicture other than the first
* element in the region list, so just load it anyway as we'll
* probably want it sooner or later. */
if( !p_spu->p_text )
SpuRenderCreateAndLoadText( p_spu, p_fmt->i_width, p_fmt->i_height );
if( p_spu->p_text )
{
subpicture_region_t *p_text_region = p_subpic->p_region;
/* Only overwrite the size fields if the region is still in
* pre-rendered TEXT format. We have to traverse the subregion
* list because if more than one subregion is present, the text
* region isn't guarentteed to be the first in the list, and
* only text regions use this flag. All of this effort assists
* with the rescaling of text that has been rendered at native
* resolution, rather than video resolution.
*/
while( p_text_region &&
p_text_region->fmt.i_chroma != VLC_FOURCC('T','E','X','T') )
{
p_text_region = p_text_region->p_next;
}
if( p_text_region &&
( ( p_text_region->i_align & SUBPICTURE_RENDERED ) == 0 ) )
{
if( p_subpic->i_original_picture_height > 0 &&
p_subpic->i_original_picture_width > 0 )
{
p_spu->p_text->fmt_out.video.i_width =
p_spu->p_text->fmt_out.video.i_visible_width =
p_subpic->i_original_picture_width;
p_spu->p_text->fmt_out.video.i_height =
p_spu->p_text->fmt_out.video.i_visible_height =
p_subpic->i_original_picture_height;
}
else
{
p_spu->p_text->fmt_out.video.i_width =
p_spu->p_text->fmt_out.video.i_visible_width =
p_fmt->i_width;
p_spu->p_text->fmt_out.video.i_height =
p_spu->p_text->fmt_out.video.i_visible_height =
p_fmt->i_height;
}
}
/* XXX for text:
* scale[] allows to pass from rendered size (by text module) to video output size */
pi_scale_width[SCALE_TEXT] = p_fmt->i_width * 1000 /
p_spu->p_text->fmt_out.video.i_width;
pi_scale_height[SCALE_TEXT]= p_fmt->i_height * 1000 /
p_spu->p_text->fmt_out.video.i_height;
}
else
{
/* Just set a value to avoid using invalid memory while looping over the array */
pi_scale_width[SCALE_TEXT] =
pi_scale_height[SCALE_TEXT]= 1000;
}
/* XXX for default:
* scale[] allows to pass from native (either video or original) size to output size */
if( p_subpic->i_original_picture_height > 0 &&
p_subpic->i_original_picture_width > 0 )
{
pi_scale_width[SCALE_DEFAULT] = p_fmt->i_width * 1000 / p_subpic->i_original_picture_width;
pi_scale_height[SCALE_DEFAULT] = p_fmt->i_height * 1000 / p_subpic->i_original_picture_height;
}
else
{
pi_scale_width[ SCALE_DEFAULT ] = i_scale_width_orig;
pi_scale_height[ SCALE_DEFAULT ] = i_scale_height_orig;
}
for( k = 0; k < SCALE_SIZE ; k++ )
{
/* Case of both width and height being specified has been dealt
* with above by instead rendering to an output pane of the
* explicit dimensions specified - we don't need to scale it.
*/
if( p_subpic->i_original_picture_height > 0 &&
p_subpic->i_original_picture_width <= 0 )
{
pi_scale_height[ k ] = pi_scale_height[ k ] * i_source_video_height /
p_subpic->i_original_picture_height;
pi_scale_width[ k ] = pi_scale_width[ k ] * i_source_video_height /
p_subpic->i_original_picture_height;
}
}
/* Set default subpicture aspect ratio */
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->i_sar_den;
p_region->fmt.i_sar_num = p_fmt->i_sar_num;
}
}
/* Take care of the aspect ratio */
if( ( p_region->fmt.i_sar_num * p_fmt->i_sar_den ) !=
( p_region->fmt.i_sar_den * p_fmt->i_sar_num ) )
{
for( k = 0; k < SCALE_SIZE; k++ )
{
pi_scale_width[k] = pi_scale_width[ k ] *
(int64_t)p_region->fmt.i_sar_num * p_fmt->i_sar_den /
p_region->fmt.i_sar_den / p_fmt->i_sar_num;
pi_subpic_x[k] = p_subpic->i_x * pi_scale_width[ k ] / 1000;
}
}
/* Load the scaling module when needed */
if( !p_spu->p_scale )
{
bool b_scale_used = false;
for( k = 0; k < SCALE_SIZE; k++ )
{
const int i_scale_w = pi_scale_width[k];
const int i_scale_h = pi_scale_height[k];
if( ( i_scale_w > 0 && i_scale_w != 1000 ) || ( i_scale_h > 0 && i_scale_h != 1000 ) )
b_scale_used = true;
}
if( b_scale_used )
SpuRenderCreateAndLoadScale( p_spu );
}
for( ; p_region != NULL; p_region = p_region->p_next )
SpuRenderRegion( p_spu, p_pic_dst, p_pic_src,
p_subpic, p_region, i_scale_width_orig, i_scale_height_orig,
pi_subpic_x, pi_scale_width, pi_scale_height,
p_fmt );
}
vlc_mutex_unlock( &p_spu->subpicture_lock );
}
/*****************************************************************************
* spu_SortSubpictures: find the subpictures to display
*****************************************************************************
* This function parses all subpictures and decides which ones need to be
* displayed. This operation does not need lock, since only READY_SUBPICTURE
* are handled. 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_SortSubpictures( spu_t *p_spu, mtime_t display_date,
bool b_paused )
{
int i_index, i_channel;
subpicture_t *p_subpic = NULL;
subpicture_t *p_ephemer;
mtime_t ephemer_date;
/* Run subpicture filters */
filter_chain_SubFilter( p_spu->p_chain, display_date );
/* 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_spu->i_channel; i_channel++ )
{
p_ephemer = 0;
ephemer_date = 0;
for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
{
if( p_spu->p_subpicture[i_index].i_channel != i_channel ||
p_spu->p_subpicture[i_index].i_status != READY_SUBPICTURE )
{
continue;
}
if( display_date &&
display_date < p_spu->p_subpicture[i_index].i_start )
{
/* Too early, come back next monday */
continue;
}
if( p_spu->p_subpicture[i_index].i_start > ephemer_date )
ephemer_date = p_spu->p_subpicture[i_index].i_start;
if( display_date > p_spu->p_subpicture[i_index].i_stop &&
( !p_spu->p_subpicture[i_index].b_ephemer ||
p_spu->p_subpicture[i_index].i_stop >
p_spu->p_subpicture[i_index].i_start ) &&
!( p_spu->p_subpicture[i_index].b_pausable &&
b_paused ) )
{
/* Too late, destroy the subpic */
spu_DestroySubpicture( p_spu, &p_spu->p_subpicture[i_index] );
continue;
}
/* If this is an ephemer subpic, add it to our list */
if( p_spu->p_subpicture[i_index].b_ephemer )
{
p_spu->p_subpicture[i_index].p_next = p_ephemer;
p_ephemer = &p_spu->p_subpicture[i_index];
continue;
}
p_spu->p_subpicture[i_index].p_next = p_subpic;
p_subpic = &p_spu->p_subpicture[i_index];
}
/* If we found ephemer subpictures, check if they have to be
* displayed or destroyed */
while( p_ephemer != NULL )
{
subpicture_t *p_tmp = p_ephemer;
p_ephemer = p_ephemer->p_next;
if( p_tmp->i_start < ephemer_date )
{
/* Ephemer subpicture has lived too long */
spu_DestroySubpicture( p_spu, p_tmp );
}
else
{
/* Ephemer subpicture can still live a bit */
p_tmp->p_next = p_subpic;
p_subpic = p_tmp;
}
}
}
return p_subpic;
}
/*****************************************************************************
* 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, bool b_locked )
{
int i_subpic; /* subpicture index */
subpicture_t *p_subpic = NULL; /* first free subpicture */
if( !b_locked )
vlc_mutex_lock( &p_spu->subpicture_lock );
for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
{
p_subpic = &p_spu->p_subpicture[i_subpic];
if( p_subpic->i_status == FREE_SUBPICTURE
|| ( p_subpic->i_status != RESERVED_SUBPICTURE
&& p_subpic->i_status != READY_SUBPICTURE ) )
{
continue;
}
if( p_subpic->i_channel == i_channel )
{
while( p_subpic->p_region )
{
subpicture_region_t *p_region = p_subpic->p_region;
p_subpic->p_region = p_region->p_next;
spu_DestroyRegion( p_spu, p_region );
}
if( p_subpic->pf_destroy ) p_subpic->pf_destroy( p_subpic );
p_subpic->i_status = FREE_SUBPICTURE;
}
}
if( !b_locked )
vlc_mutex_unlock( &p_spu->subpicture_lock );
}
/*****************************************************************************
* spu_ControlDefault: default methods for the subpicture unit control.
*****************************************************************************/
static int spu_vaControlDefault( spu_t *p_spu, int i_query, va_list args )
{
int *pi, i;
switch( i_query )
{
case SPU_CHANNEL_REGISTER:
pi = (int *)va_arg( args, int * );
if( pi ) *pi = p_spu->i_channel++;
break;
case SPU_CHANNEL_CLEAR:
i = (int)va_arg( args, int );
SpuClearChannel( p_spu, i, false );
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 )
{
vlc_value_t val;
vlc_mutex_lock( &p_spu->subpicture_lock );
p_spu->b_force_palette = false;
p_spu->b_force_crop = false;
if( var_Get( p_object, "highlight", &val ) || !val.b_bool )
{
vlc_mutex_unlock( &p_spu->subpicture_lock );
return;
}
p_spu->b_force_crop = true;
var_Get( p_object, "x-start", &val );
p_spu->i_crop_x = val.i_int;
var_Get( p_object, "y-start", &val );
p_spu->i_crop_y = val.i_int;
var_Get( p_object, "x-end", &val );
p_spu->i_crop_width = val.i_int - p_spu->i_crop_x;
var_Get( p_object, "y-end", &val );
p_spu->i_crop_height = val.i_int - p_spu->i_crop_y;
if( var_Get( p_object, "menu-palette", &val ) == VLC_SUCCESS )
{
memcpy( p_spu->palette, val.p_address, 16 );
p_spu->b_force_palette = true;
}
vlc_mutex_unlock( &p_spu->subpicture_lock );
msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
p_spu->i_crop_x, p_spu->i_crop_y,
p_spu->i_crop_width, p_spu->i_crop_height,
p_spu->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 )
{
(void)psz_var; (void)oldval; (void)newval;
UpdateSPU( (spu_t *)p_data, p_object );
return VLC_SUCCESS;
}
/*****************************************************************************
* Buffers allocation callbacks for the filters
*****************************************************************************/
static subpicture_t *sub_new_buffer( filter_t *p_filter )
{
filter_owner_sys_t *p_sys = p_filter->p_owner;
subpicture_t *p_subpicture = spu_CreateSubpicture( p_sys->p_spu );
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 )
{
filter_owner_sys_t *p_sys = p_filter->p_owner;
spu_DestroySubpicture( p_sys->p_spu, p_subpic );
}
static subpicture_t *spu_new_buffer( filter_t *p_filter )
{
(void)p_filter;
subpicture_t *p_subpic = (subpicture_t *)malloc(sizeof(subpicture_t));
if( !p_subpic ) return NULL;
memset( p_subpic, 0, sizeof(subpicture_t) );
p_subpic->b_absolute = true;
p_subpic->pf_create_region = __spu_CreateRegion;
p_subpic->pf_make_region = __spu_MakeRegion;
p_subpic->pf_destroy_region = __spu_DestroyRegion;
return p_subpic;
}
static void spu_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
{
while( p_subpic->p_region )
{
subpicture_region_t *p_region = p_subpic->p_region;
p_subpic->p_region = p_region->p_next;
p_subpic->pf_destroy_region( VLC_OBJECT(p_filter), p_region );
}
free( p_subpic );
}
static picture_t *spu_new_video_buffer( filter_t *p_filter )
{
picture_t *p_picture = malloc( sizeof(picture_t) );
if( !p_picture ) return NULL;
if( vout_AllocatePicture( p_filter, p_picture,
p_filter->fmt_out.video.i_chroma,
p_filter->fmt_out.video.i_width,
p_filter->fmt_out.video.i_height,
p_filter->fmt_out.video.i_aspect )
!= VLC_SUCCESS )
{
free( p_picture );
return NULL;
}
p_picture->pf_release = RegionPictureRelease;
return p_picture;
}
static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_pic )
{
(void)p_filter;
if( p_pic )
{
free( p_pic->p_data_orig );
free( p_pic );
}
}
static int SubFilterCallback( vlc_object_t *p_object, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
VLC_UNUSED(p_object); VLC_UNUSED(oldval);
VLC_UNUSED(newval); VLC_UNUSED(psz_var);
spu_t *p_spu = (spu_t *)p_data;
vlc_mutex_lock( &p_spu->subpicture_lock );
filter_chain_Reset( p_spu->p_chain, NULL, NULL );
spu_ParseChain( p_spu );
vlc_mutex_unlock( &p_spu->subpicture_lock );
return VLC_SUCCESS;
}
static int sub_filter_allocation_init( filter_t *p_filter, void *p_data )
{
spu_t *p_spu = (spu_t *)p_data;
p_filter->pf_sub_buffer_new = sub_new_buffer;
p_filter->pf_sub_buffer_del = sub_del_buffer;
filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
if( !p_sys ) return VLC_EGENERIC;
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 sub_filter_allocation_clear( filter_t *p_filter )
{
filter_owner_sys_t *p_sys = p_filter->p_owner;
SpuClearChannel( p_sys->p_spu, p_sys->i_channel, true );
free( p_filter->p_owner );
}
