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/*
* Filter graphs
* copyright (c) 2007 Bobby Bingham
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_AVFILTER_GRAPH_H
#define FFMPEG_AVFILTER_GRAPH_H
#include "avfilter.h"
typedef struct AVFilterGraph AVFilterGraph;
/**
* Create a new filter graph
*/
AVFilterGraph *avfilter_create_graph(void);
/**
* Destroy a filter graph, and any filters in it.
* @param graph The filter graph to destroy
*/
void avfilter_destroy_graph(AVFilterGraph *graph);
/**
* Add an existing filter instance to a filter graph.
* @param graph The filter graph
* @param filter The filter to be added
*/
void avfilter_graph_add_filter(AVFilterGraph *graph, AVFilterContext *filter);
/**
* Loads the filter graph with a simple chain described by filters.
* @param graph The filter graph to load filters into
* @param count The number of filters to be created
* @param filters_list An array of strings describing the filters to be created.
* The format of each string is "name=params".
* @param first If non-NULL, will be set to the first filter in the chain.
* @param last If non-NULL, will be set to the last filter in the chain.
* @return 0 on success. -1 on error.
*/
int avfilter_graph_load_chain(AVFilterGraph *graph,
unsigned count, char **filter_list,
AVFilterContext **first, AVFilterContext **last);
#endif /* FFMPEG_AVFILTER_H */
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