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https://code.videolan.org/videolan/vlc
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c6b7377987
* src/libvlc.h: new --sub-filter config option + added a new subpictures category that regroups all the subpictures options.
112 lines
3.9 KiB
C
112 lines
3.9 KiB
C
/*****************************************************************************
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* vlc_spu.h : subpicture unit
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*****************************************************************************
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* Copyright (C) 1999, 2000 VideoLAN
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* $Id$
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*
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* Authors: Gildas Bazin <gbazin@videolan.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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/**
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* \defgroup spu Subpicture Unit
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* This module describes the programming interface for the subpicture unit.
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* It includes functions allowing to create/destroy an spu, create/destroy
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* subpictures and render them.
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* @{
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*/
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/**
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* Subpicture unit descriptor
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*/
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struct spu_t
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{
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VLC_COMMON_MEMBERS
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vlc_mutex_t subpicture_lock; /**< subpicture heap lock */
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subpicture_t p_subpicture[VOUT_MAX_PICTURES]; /**< subpictures */
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int i_channel; /**< number of subpicture channels registered */
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filter_t *p_blend; /**< alpha blending module */
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filter_t *p_text; /**< text renderer module */
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filter_t *p_scale; /**< scaling module */
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vlc_bool_t b_force_crop; /**< force cropping of subpicture */
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int i_crop_x, i_crop_y, i_crop_width, i_crop_height; /**< cropping */
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int i_margin; /**< force position of a subpicture */
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vlc_bool_t b_force_alpha; /**< force alpha palette of subpicture */
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uint8_t pi_alpha[4]; /**< forced alpha palette */
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int ( *pf_control ) ( spu_t *, int, va_list );
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/* Supciture filters */
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filter_t *pp_filter[10];
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int i_filter;
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};
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static inline int spu_vaControl( spu_t *p_spu, int i_query, va_list args )
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{
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if( p_spu->pf_control )
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return p_spu->pf_control( p_spu, i_query, args );
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else
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return VLC_EGENERIC;
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}
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static inline int spu_Control( spu_t *p_spu, int i_query, ... )
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{
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va_list args;
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int i_result;
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va_start( args, i_query );
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i_result = spu_vaControl( p_spu, i_query, args );
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va_end( args );
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return i_result;
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}
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enum spu_query_e
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{
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SPU_CHANNEL_REGISTER, /* arg1= int * res= */
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SPU_CHANNEL_CLEAR /* arg1= int res= */
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};
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/**
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* \addtogroup subpicture
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* @{
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*/
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#define spu_Create(a) __spu_Create(VLC_OBJECT(a))
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VLC_EXPORT( spu_t *, __spu_Create, ( vlc_object_t * ) );
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VLC_EXPORT( int, spu_Init, ( spu_t * ) );
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VLC_EXPORT( void, spu_Destroy, ( spu_t * ) );
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void spu_Attach( spu_t *, vlc_object_t *, vlc_bool_t );
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VLC_EXPORT( subpicture_t *, spu_CreateSubpicture, ( spu_t * ) );
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VLC_EXPORT( void, spu_DestroySubpicture, ( spu_t *, subpicture_t * ) );
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VLC_EXPORT( void, spu_DisplaySubpicture, ( spu_t *, subpicture_t * ) );
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#define spu_CreateRegion(a,b) __spu_CreateRegion(VLC_OBJECT(a),b)
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VLC_EXPORT( subpicture_region_t *,__spu_CreateRegion, ( vlc_object_t *, video_format_t * ) );
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#define spu_DestroyRegion(a,b) __spu_DestroyRegion(VLC_OBJECT(a),b)
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VLC_EXPORT( void, __spu_DestroyRegion, ( vlc_object_t *, subpicture_region_t * ) );
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VLC_EXPORT( subpicture_t *, spu_SortSubpictures, ( spu_t *, mtime_t ) );
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VLC_EXPORT( void, spu_RenderSubpictures, ( spu_t *, video_format_t *, picture_t *, picture_t *, subpicture_t *, int, int ) );
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/** @}*/
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/**
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* @}
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*/
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