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/*****************************************************************************
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* filter.c : filter_t helpers.
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*****************************************************************************
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* Copyright (C) 2009 Laurent Aimar
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* $Id: 36f1ba444c60808ace989215e50e38be3e400c4e $
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* Author: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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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 Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#include <vlc_common.h>
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#include <vlc_filter.h>
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#include <vlc_modules.h>
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filter_t *filter_NewBlend( vlc_object_t *p_this,
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const video_format_t *p_dst_chroma )
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filter_t *p_blend = vlc_custom_create( p_this, sizeof(*p_blend), "blend" );
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es_format_Init( &p_blend->fmt_in, VIDEO_ES, 0 );
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es_format_Init( &p_blend->fmt_out, VIDEO_ES, 0 );
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p_blend->fmt_out.i_codec =
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p_blend->fmt_out.video.i_chroma = p_dst_chroma->i_chroma;
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p_blend->fmt_out.video.i_rmask = p_dst_chroma->i_rmask;
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p_blend->fmt_out.video.i_gmask = p_dst_chroma->i_gmask;
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p_blend->fmt_out.video.i_bmask = p_dst_chroma->i_bmask;
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p_blend->fmt_out.video.i_rrshift= p_dst_chroma->i_rrshift;
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p_blend->fmt_out.video.i_rgshift= p_dst_chroma->i_rgshift;
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p_blend->fmt_out.video.i_rbshift= p_dst_chroma->i_rbshift;
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p_blend->fmt_out.video.i_lrshift= p_dst_chroma->i_lrshift;
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p_blend->fmt_out.video.i_lgshift= p_dst_chroma->i_lgshift;
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p_blend->fmt_out.video.i_lbshift= p_dst_chroma->i_lbshift;
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/* The blend module will be loaded when needed with the real
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p_blend->p_module = NULL;
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int filter_ConfigureBlend( filter_t *p_blend,
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int i_dst_width, int i_dst_height,
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const video_format_t *p_src )
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if( p_blend->p_module &&
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p_blend->fmt_in.video.i_chroma != p_src->i_chroma )
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/* The chroma is not the same, we need to reload the blend module */
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module_unneed( p_blend, p_blend->p_module );
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p_blend->p_module = NULL;
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p_blend->fmt_in.i_codec = p_src->i_chroma;
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p_blend->fmt_in.video = *p_src;
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p_blend->fmt_out.video.i_width =
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p_blend->fmt_out.video.i_visible_width = i_dst_width;
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p_blend->fmt_out.video.i_height =
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p_blend->fmt_out.video.i_visible_height = i_dst_height;
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if( !p_blend->p_module )
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p_blend->p_module = module_need( p_blend, "video blending", NULL, false );
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if( !p_blend->p_module )
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int filter_Blend( filter_t *p_blend,
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picture_t *p_dst, int i_dst_x, int i_dst_y,
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const picture_t *p_src, int i_alpha )
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if( !p_blend->p_module )
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p_blend->pf_video_blend( p_blend, p_dst, p_src, i_dst_x, i_dst_y, i_alpha );
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void filter_DeleteBlend( filter_t *p_blend )
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if( p_blend->p_module )
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module_unneed( p_blend, p_blend->p_module );
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vlc_object_release( p_blend );
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#include <vlc_video_splitter.h>
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video_splitter_t *video_splitter_New( vlc_object_t *p_this,
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const char *psz_name,
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const video_format_t *p_fmt )
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video_splitter_t *p_splitter = vlc_custom_create( p_this,
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sizeof(*p_splitter), "video splitter" );
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video_format_Copy( &p_splitter->fmt, p_fmt );
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p_splitter->p_module = module_need( p_splitter, "video splitter", psz_name, true );
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if( ! p_splitter->p_module )
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video_splitter_Delete( p_splitter );
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void video_splitter_Delete( video_splitter_t *p_splitter )
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if( p_splitter->p_module )
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module_unneed( p_splitter, p_splitter->p_module );
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video_format_Clean( &p_splitter->fmt );
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vlc_object_release( p_splitter );