2 * Copyright (c) 2009 Stefano Sabatini
4 * This file is part of FFmpeg.
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.
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.
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
23 #include "libavutil/channel_layout.h"
24 #include "libavutil/mem.h"
25 #include "libavutil/pixdesc.h"
26 #include "libavutil/samplefmt.h"
28 #include "libavfilter/avfilter.h"
29 #include "libavfilter/formats.h"
31 static void print_formats(AVFilterContext
*filter_ctx
)
35 #define PRINT_FMTS(inout, outin, INOUT) \
36 for (i = 0; i < filter_ctx->nb_##inout##puts; i++) { \
37 if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_VIDEO) { \
38 AVFilterFormats *fmts = \
39 filter_ctx->inout##puts[i]->outin##_formats; \
40 for (j = 0; j < fmts->nb_formats; j++) \
41 if(av_get_pix_fmt_name(fmts->formats[j])) \
42 printf(#INOUT "PUT[%d] %s: fmt:%s\n", \
43 i, avfilter_pad_get_name(filter_ctx->inout##put_pads, i), \
44 av_get_pix_fmt_name(fmts->formats[j])); \
45 } else if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_AUDIO) { \
46 AVFilterFormats *fmts; \
47 AVFilterChannelLayouts *layouts; \
49 fmts = filter_ctx->inout##puts[i]->outin##_formats; \
50 for (j = 0; j < fmts->nb_formats; j++) \
51 printf(#INOUT "PUT[%d] %s: fmt:%s\n", \
52 i, avfilter_pad_get_name(filter_ctx->inout##put_pads, i), \
53 av_get_sample_fmt_name(fmts->formats[j])); \
55 layouts = filter_ctx->inout##puts[i]->outin##_channel_layouts; \
56 for (j = 0; j < layouts->nb_channel_layouts; j++) { \
58 av_get_channel_layout_string(buf, sizeof(buf), -1, \
59 layouts->channel_layouts[j]); \
60 printf(#INOUT "PUT[%d] %s: chlayout:%s\n", \
61 i, avfilter_pad_get_name(filter_ctx->inout##put_pads, i), buf); \
66 PRINT_FMTS(in, out, IN);
67 PRINT_FMTS(out
, in
, OUT
);
70 int main(int argc
, char **argv
)
73 AVFilterContext
*filter_ctx
;
74 AVFilterGraph
*graph_ctx
;
75 const char *filter_name
;
76 const char *filter_args
= NULL
;
79 av_log_set_level(AV_LOG_DEBUG
);
82 fprintf(stderr
, "Missing filter name as argument\n");
86 filter_name
= argv
[1];
88 filter_args
= argv
[2];
91 graph_ctx
= avfilter_graph_alloc();
95 avfilter_register_all();
97 /* get a corresponding filter and open it */
98 if (!(filter
= avfilter_get_by_name(filter_name
))) {
99 fprintf(stderr
, "Unrecognized filter with name '%s'\n", filter_name
);
103 /* open filter and add it to the graph */
104 if (!(filter_ctx
= avfilter_graph_alloc_filter(graph_ctx
, filter
, filter_name
))) {
105 fprintf(stderr
, "Impossible to open filter with name '%s'\n",
109 if (avfilter_init_str(filter_ctx
, filter_args
) < 0) {
110 fprintf(stderr
, "Impossible to init filter '%s' with arguments '%s'\n",
111 filter_name
, filter_args
);
115 /* create a link for each of the input pads */
116 for (i
= 0; i
< filter_ctx
->nb_inputs
; i
++) {
117 AVFilterLink
*link
= av_mallocz(sizeof(AVFilterLink
));
118 link
->type
= avfilter_pad_get_type(filter_ctx
->input_pads
, i
);
119 filter_ctx
->inputs
[i
] = link
;
121 for (i
= 0; i
< filter_ctx
->nb_outputs
; i
++) {
122 AVFilterLink
*link
= av_mallocz(sizeof(AVFilterLink
));
123 link
->type
= avfilter_pad_get_type(filter_ctx
->output_pads
, i
);
124 filter_ctx
->outputs
[i
] = link
;
127 if (filter
->query_formats
)
128 filter
->query_formats(filter_ctx
);
130 ff_default_query_formats(filter_ctx
);
132 print_formats(filter_ctx
);
134 avfilter_free(filter_ctx
);
135 avfilter_graph_free(&graph_ctx
);