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ffmpeg / libavfilter / allfilters.c @ 006aa1a4

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/*
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 * filter registration
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 * copyright (c) 2008 Vitor Sessak
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg 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 GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "avfilter.h"
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#define REGISTER_FILTER(X,x,y) { \
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          extern AVFilter avfilter_##y##_##x ; \
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          if(CONFIG_##X##_FILTER )  avfilter_register(&avfilter_##y##_##x ); }
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void avfilter_register_all(void)
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{
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    static int initialized;
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    if (initialized)
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        return;
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    initialized = 1;
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    REGISTER_FILTER (CROP, crop, vf);
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    REGISTER_FILTER (FORMAT, format, vf);
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    REGISTER_FILTER (NOFORMAT, noformat, vf);
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    REGISTER_FILTER (NULL, null, vf);
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    REGISTER_FILTER (SCALE, scale, vf);
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    REGISTER_FILTER (SLICIFY, slicify, vf);
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    REGISTER_FILTER (VFLIP, vflip, vf);
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    REGISTER_FILTER (NULLSRC, nullsrc, vsrc);
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    REGISTER_FILTER(NULLSINK, nullsink, vsink);
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}