1 /*
2 * Copyright (c) 2009 Stefano Sabatini
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
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 *
11 * FFmpeg is distributed in the hope that it will be useful,
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
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include <stdio.h>
22
23 #include "libavutil/channel_layout.h"
24 #include "libavutil/mem.h"
25 #include "libavutil/pixdesc.h"
26 #include "libavutil/samplefmt.h"
27
28 #define FF_INTERNAL_FIELDS 1
29 #include "libavfilter/framequeue.h"
30
31 #include "libavfilter/avfilter.h"
32 #include "libavfilter/formats.h"
33 #include "libavfilter/internal.h"
34
print_formats(AVFilterContext * filter_ctx)35 static void print_formats(AVFilterContext *filter_ctx)
36 {
37 int i, j;
38
39 #define PRINT_FMTS(inout, outin, INOUT) \
40 for (i = 0; i < filter_ctx->nb_##inout##puts; i++) { \
41 if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_VIDEO) { \
42 AVFilterFormats *fmts = \
43 filter_ctx->inout##puts[i]->outin##cfg.formats; \
44 for (j = 0; j < fmts->nb_formats; j++) \
45 if(av_get_pix_fmt_name(fmts->formats[j])) \
46 printf(#INOUT "PUT[%d] %s: fmt:%s\n", \
47 i, avfilter_pad_get_name(filter_ctx->inout##put_pads, i), \
48 av_get_pix_fmt_name(fmts->formats[j])); \
49 } else if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_AUDIO) { \
50 AVFilterFormats *fmts; \
51 AVFilterChannelLayouts *layouts; \
52 \
53 fmts = filter_ctx->inout##puts[i]->outin##cfg.formats; \
54 for (j = 0; j < fmts->nb_formats; j++) \
55 printf(#INOUT "PUT[%d] %s: fmt:%s\n", \
56 i, avfilter_pad_get_name(filter_ctx->inout##put_pads, i), \
57 av_get_sample_fmt_name(fmts->formats[j])); \
58 \
59 layouts = filter_ctx->inout##puts[i]->outin##cfg.channel_layouts; \
60 for (j = 0; j < layouts->nb_channel_layouts; j++) { \
61 char buf[256]; \
62 av_get_channel_layout_string(buf, sizeof(buf), -1, \
63 layouts->channel_layouts[j]); \
64 printf(#INOUT "PUT[%d] %s: chlayout:%s\n", \
65 i, avfilter_pad_get_name(filter_ctx->inout##put_pads, i), buf); \
66 } \
67 } \
68 } \
69
70 PRINT_FMTS(in, out, IN);
71 PRINT_FMTS(out, in, OUT);
72 }
73
main(int argc,char ** argv)74 int main(int argc, char **argv)
75 {
76 const AVFilter *filter;
77 AVFilterContext *filter_ctx;
78 AVFilterGraph *graph_ctx;
79 const char *filter_name;
80 const char *filter_args = NULL;
81 int i;
82 int ret = 0;
83
84 av_log_set_level(AV_LOG_DEBUG);
85
86 if (argc < 2) {
87 fprintf(stderr, "Missing filter name as argument\n");
88 return 1;
89 }
90
91 filter_name = argv[1];
92 if (argc > 2)
93 filter_args = argv[2];
94
95 /* allocate graph */
96 graph_ctx = avfilter_graph_alloc();
97 if (!graph_ctx)
98 return 1;
99
100 /* get a corresponding filter and open it */
101 if (!(filter = avfilter_get_by_name(filter_name))) {
102 fprintf(stderr, "Unrecognized filter with name '%s'\n", filter_name);
103 return 1;
104 }
105
106 /* open filter and add it to the graph */
107 if (!(filter_ctx = avfilter_graph_alloc_filter(graph_ctx, filter, filter_name))) {
108 fprintf(stderr, "Impossible to open filter with name '%s'\n",
109 filter_name);
110 return 1;
111 }
112 if (avfilter_init_str(filter_ctx, filter_args) < 0) {
113 fprintf(stderr, "Impossible to init filter '%s' with arguments '%s'\n",
114 filter_name, filter_args);
115 return 1;
116 }
117
118 /* create a link for each of the input pads */
119 for (i = 0; i < filter_ctx->nb_inputs; i++) {
120 AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
121 if (!link) {
122 fprintf(stderr, "Unable to allocate memory for filter input link\n");
123 ret = 1;
124 goto fail;
125 }
126 link->type = avfilter_pad_get_type(filter_ctx->input_pads, i);
127 filter_ctx->inputs[i] = link;
128 }
129 for (i = 0; i < filter_ctx->nb_outputs; i++) {
130 AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
131 if (!link) {
132 fprintf(stderr, "Unable to allocate memory for filter output link\n");
133 ret = 1;
134 goto fail;
135 }
136 link->type = avfilter_pad_get_type(filter_ctx->output_pads, i);
137 filter_ctx->outputs[i] = link;
138 }
139
140 if (filter->query_formats)
141 ret = filter->query_formats(filter_ctx);
142 else
143 ret = ff_default_query_formats(filter_ctx);
144
145 print_formats(filter_ctx);
146
147 fail:
148 avfilter_free(filter_ctx);
149 avfilter_graph_free(&graph_ctx);
150 fflush(stdout);
151 return ret;
152 }
153