2 * This file is part of Libav.
4 * Libav is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * Libav is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #ifndef AVFILTER_INTERNAL_H
20 #define AVFILTER_INTERNAL_H
24 * internal API functions
28 #include "avfiltergraph.h"
31 * Check for the validity of graph.
33 * A graph is considered valid if all its input and output pads are
36 * @return 0 in case of success, a negative value otherwise
38 int ff_avfilter_graph_check_validity(AVFilterGraph *graphctx, AVClass *log_ctx);
41 * Configure all the links of graphctx.
43 * @return 0 in case of success, a negative value otherwise
45 int ff_avfilter_graph_config_links(AVFilterGraph *graphctx, AVClass *log_ctx);
48 * Configure the formats of all the links in the graph.
50 int ff_avfilter_graph_config_formats(AVFilterGraph *graphctx, AVClass *log_ctx);
52 /** default handler for freeing audio/video buffer when there are no references left */
53 void ff_avfilter_default_free_buffer(AVFilterBuffer *buf);
55 /** Tell is a format is contained in the provided list terminated by -1. */
56 int ff_fmt_is_in(int fmt, const int *fmts);
58 #endif /* AVFILTER_INTERNAL_H */