65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
/*
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* Filter graph parser
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* copyright (c) 2007 Bobby Bingham
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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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#ifndef AVFILTER_GRAPHPARSER_H
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#define AVFILTER_GRAPHPARSER_H
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#include "avfilter.h"
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#include "avfiltergraph.h"
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/**
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* A linked-list of the inputs/outputs of the filter chain.
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*
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* This is mainly useful for avfilter_graph_parse(), since this
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* function may accept a description of a graph with not connected
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* input/output pads. This struct specifies, per each not connected
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* pad contained in the graph, the filter context and the pad index
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* required for establishing a link.
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*/
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typedef struct AVFilterInOut {
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/** unique name for this input/output in the list */
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char *name;
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/** filter context associated to this input/output */
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AVFilterContext *filter_ctx;
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/** index of the filt_ctx pad to use for linking */
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int pad_idx;
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/** next input/input in the list, NULL if this is the last */
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struct AVFilterInOut *next;
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} AVFilterInOut;
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/**
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* Add a graph described by a string to a graph.
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*
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* @param graph the filter graph where to link the parsed graph context
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* @param filters string to be parsed
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* @param inputs linked list to the inputs of the graph
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* @param outputs linked list to the outputs of the graph
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* @return zero on success, a negative AVERROR code on error
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*/
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int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
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AVFilterInOut *inputs, AVFilterInOut *outputs,
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AVClass *log_ctx);
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#endif /* AVFILTER_GRAPHPARSER_H */
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