Statistics
| Branch: | Revision:

ffmpeg / libavfilter / avfiltergraph.h @ 3fb8e77a

History | View | Annotate | Download (2.24 KB)

1
/*
2
 * Filter graphs
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 AVFILTER_AVFILTERGRAPH_H
23
#define AVFILTER_AVFILTERGRAPH_H
24

    
25
#include "avfilter.h"
26

    
27
typedef struct AVFilterGraph {
28
    unsigned filter_count;
29
    AVFilterContext **filters;
30

    
31
    char *scale_sws_opts; ///< sws options to use for the auto-inserted scale filters
32
} AVFilterGraph;
33

    
34
/**
35
 * Gets a filter instance with name name from graph.
36
 *
37
 * @return the pointer to the found filter instance or NULL if it
38
 * cannot be found.
39
 */
40
AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, char *name);
41

    
42
/**
43
 * Adds an existing filter instance to a filter graph.
44
 * @param graph  The filter graph
45
 * @param filter The filter to be added
46
 */
47
int avfilter_graph_add_filter(AVFilterGraph *graphctx, AVFilterContext *filter);
48

    
49
/**
50
 * Checks for the validity of graph.
51
 *
52
 * A graph is considered valid if all its input and output pads are
53
 * connected.
54
 *
55
 * @return 0 in case of success, a negative value otherwise
56
 */
57
int avfilter_graph_check_validity(AVFilterGraph *graphctx, AVClass *log_ctx);
58

    
59
/**
60
 * Configures all the links of graphctx.
61
 *
62
 * @return 0 in case of success, a negative value otherwise
63
 */
64
int avfilter_graph_config_links(AVFilterGraph *graphctx, AVClass *log_ctx);
65

    
66
/**
67
 * Configures the formats of all the links in the graph.
68
 */
69
int avfilter_graph_config_formats(AVFilterGraph *graphctx, AVClass *log_ctx);
70

    
71
/**
72
 * Frees a graph and destroys its links.
73
 */
74
void avfilter_graph_destroy(AVFilterGraph *graph);
75

    
76
#endif  /* AVFILTER_AVFILTERGRAPH_H */