lavfi: make avfilter_free() remove the filter from its graph.
[libav.git] / libavfilter / filtfmts.c
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1/*
2 * Copyright (c) 2009 Stefano Sabatini
3 *
2912e87a 4 * This file is part of Libav.
e34d5db5 5 *
2912e87a 6 * Libav is free software; you can redistribute it and/or
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7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
2912e87a 11 * Libav is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
2912e87a 17 * License along with Libav; if not, write to the Free Software
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18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
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21#include <stdio.h>
22
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23#include "libavformat/avformat.h"
24#include "libavutil/pixdesc.h"
25#include "libavfilter/avfilter.h"
43c7a01e 26#include "libavfilter/formats.h"
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27
28int main(int argc, char **argv)
29{
30 AVFilter *filter;
31 AVFilterContext *filter_ctx;
32 const char *filter_name;
33 const char *filter_args = NULL;
34 int i, j;
35
36 av_log_set_level(AV_LOG_DEBUG);
37
38 if (!argv[1]) {
39 fprintf(stderr, "Missing filter name as argument\n");
40 return 1;
41 }
42
43 filter_name = argv[1];
44 if (argv[2])
45 filter_args = argv[2];
46
47 avfilter_register_all();
48
49 /* get a corresponding filter and open it */
50 if (!(filter = avfilter_get_by_name(filter_name))) {
51 fprintf(stderr, "Unrecognized filter with name '%s'\n", filter_name);
52 return 1;
53 }
54
84c03869 55 if (avfilter_open(&filter_ctx, filter, NULL) < 0) {
ffae713a 56 fprintf(stderr, "Impossible to open filter with name '%s'\n",
4e81b5f5 57 filter_name);
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58 return 1;
59 }
60 if (avfilter_init_filter(filter_ctx, filter_args, NULL) < 0) {
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61 fprintf(stderr, "Impossible to init filter '%s' with arguments '%s'\n",
62 filter_name, filter_args);
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63 return 1;
64 }
65
66 /* create a link for each of the input pads */
67 for (i = 0; i < filter_ctx->input_count; i++) {
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68 AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
69 link->type = filter_ctx->filter->inputs[i].type;
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70 filter_ctx->inputs[i] = link;
71 }
72 for (i = 0; i < filter_ctx->output_count; i++) {
c61f84bf 73 AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
a8542e43 74 link->type = filter_ctx->filter->outputs[i].type;
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75 filter_ctx->outputs[i] = link;
76 }
77
78 if (filter->query_formats)
79 filter->query_formats(filter_ctx);
80 else
43c7a01e 81 ff_default_query_formats(filter_ctx);
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82
83 /* print the supported formats in input */
84 for (i = 0; i < filter_ctx->input_count; i++) {
85 AVFilterFormats *fmts = filter_ctx->inputs[i]->out_formats;
e34d5db5 86 for (j = 0; j < fmts->format_count; j++)
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87 printf("INPUT[%d] %s: %s\n",
88 i, filter_ctx->filter->inputs[i].name,
59ee9f78 89 av_get_pix_fmt_name(fmts->formats[j]));
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90 }
91
92 /* print the supported formats in output */
93 for (i = 0; i < filter_ctx->output_count; i++) {
94 AVFilterFormats *fmts = filter_ctx->outputs[i]->in_formats;
e34d5db5 95 for (j = 0; j < fmts->format_count; j++)
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96 printf("OUTPUT[%d] %s: %s\n",
97 i, filter_ctx->filter->outputs[i].name,
59ee9f78 98 av_get_pix_fmt_name(fmts->formats[j]));
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99 }
100
24de0edb 101 avfilter_free(filter_ctx);
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102 fflush(stdout);
103 return 0;
104}