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 #define FF_INTERNAL_FIELDS 1
29 #include "libavfilter/framequeue.h"
31 #include "libavfilter/avfilter.h"
32 #include "libavfilter/formats.h"
33 #include "libavfilter/internal.h"
35 static void print_formats(AVFilterContext *filter_ctx)
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##_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; \
53 fmts = filter_ctx->inout##puts[i]->outin##_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])); \
59 layouts = filter_ctx->inout##puts[i]->outin##_channel_layouts; \
60 for (j = 0; j < layouts->nb_channel_layouts; j++) { \
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); \
70 PRINT_FMTS(in, out, IN);
71 PRINT_FMTS(out, in, OUT);
74 int main(int argc, char **argv)
77 AVFilterContext *filter_ctx;
78 AVFilterGraph *graph_ctx;
79 const char *filter_name;
80 const char *filter_args = NULL;
84 av_log_set_level(AV_LOG_DEBUG);
87 fprintf(stderr, "Missing filter name as argument\n");
91 filter_name = argv[1];
93 filter_args = argv[2];
96 graph_ctx = avfilter_graph_alloc();
100 avfilter_register_all();
102 /* get a corresponding filter and open it */
103 if (!(filter = avfilter_get_by_name(filter_name))) {
104 fprintf(stderr, "Unrecognized filter with name '%s'\n", filter_name);
108 /* open filter and add it to the graph */
109 if (!(filter_ctx = avfilter_graph_alloc_filter(graph_ctx, filter, filter_name))) {
110 fprintf(stderr, "Impossible to open filter with name '%s'\n",
114 if (avfilter_init_str(filter_ctx, filter_args) < 0) {
115 fprintf(stderr, "Impossible to init filter '%s' with arguments '%s'\n",
116 filter_name, filter_args);
120 /* create a link for each of the input pads */
121 for (i = 0; i < filter_ctx->nb_inputs; i++) {
122 AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
124 fprintf(stderr, "Unable to allocate memory for filter input link\n");
128 link->type = avfilter_pad_get_type(filter_ctx->input_pads, i);
129 filter_ctx->inputs[i] = link;
131 for (i = 0; i < filter_ctx->nb_outputs; i++) {
132 AVFilterLink *link = av_mallocz(sizeof(AVFilterLink));
134 fprintf(stderr, "Unable to allocate memory for filter output link\n");
138 link->type = avfilter_pad_get_type(filter_ctx->output_pads, i);
139 filter_ctx->outputs[i] = link;
142 if (filter->query_formats)
143 filter->query_formats(filter_ctx);
145 ff_default_query_formats(filter_ctx);
147 print_formats(filter_ctx);
150 avfilter_free(filter_ctx);
151 avfilter_graph_free(&graph_ctx);