dcf478bf45367286cd7c9341aeccf78316134130
[libav.git] / libavfilter / graphparser.h
1 /*
2 * Filter graph parser
3 * copyright (c) 2007 Bobby Bingham
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #ifndef FFMPEG_GRAPHPARSER_H
23 #define FFMPEG_GRAPHPARSER_H
24
25 #include "avfilter.h"
26 #include "avfiltergraph.h"
27
28 /**
29 * A linked-list of the inputs/outputs of the filter chain.
30 */
31 typedef struct AVFilterInOut {
32 const char *name;
33 AVFilterContext *filter;
34 int pad_idx;
35
36 struct AVFilterInOut *next;
37 } AVFilterInOut;
38
39 /**
40 * Add to a graph a graph described by a string.
41 * @param graph the filter graph where to link the parsed graph context
42 * @param filters string to be parsed
43 * @param inouts linked list to the inputs and outputs of the graph
44 * @param outpad pad index of the output
45 * @return zero on success, -1 on error
46 */
47 int avfilter_parse_graph(AVFilterGraph *graph, const char *filters,
48 AVFilterInOut *inputs, AVFilterInOut *outputs,
49 AVClass *log_ctx);
50
51 #endif /* FFMPEG_GRAPHPARSER_H */