mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
113 lines
3.6 KiB
113 lines
3.6 KiB
/* |
|
* Copyright (c) 2009 Stefano Sabatini |
|
* |
|
* This file is part of Libav. |
|
* |
|
* Libav is free software; you can redistribute it and/or |
|
* modify it under the terms of the GNU Lesser General Public |
|
* License as published by the Free Software Foundation; either |
|
* version 2.1 of the License, or (at your option) any later version. |
|
* |
|
* Libav is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
* Lesser General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU Lesser General Public |
|
* License along with Libav; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#include <stdio.h> |
|
|
|
#include "libavutil/mem.h" |
|
#include "libavutil/pixdesc.h" |
|
|
|
#include "libavfilter/avfilter.h" |
|
#include "libavfilter/formats.h" |
|
|
|
int main(int argc, char **argv) |
|
{ |
|
AVFilter *filter; |
|
AVFilterContext *filter_ctx; |
|
AVFilterGraph *graph_ctx; |
|
const char *filter_name; |
|
const char *filter_args = NULL; |
|
int i, j; |
|
|
|
av_log_set_level(AV_LOG_DEBUG); |
|
|
|
if (!argv[1]) { |
|
fprintf(stderr, "Missing filter name as argument\n"); |
|
return 1; |
|
} |
|
|
|
filter_name = argv[1]; |
|
if (argv[2]) |
|
filter_args = argv[2]; |
|
|
|
/* allocate graph */ |
|
graph_ctx = avfilter_graph_alloc(); |
|
if (!graph_ctx) |
|
return 1; |
|
|
|
avfilter_register_all(); |
|
|
|
/* get a corresponding filter and open it */ |
|
if (!(filter = avfilter_get_by_name(filter_name))) { |
|
fprintf(stderr, "Unrecognized filter with name '%s'\n", filter_name); |
|
return 1; |
|
} |
|
|
|
/* open filter and add it to the graph */ |
|
if (!(filter_ctx = avfilter_graph_alloc_filter(graph_ctx, filter, filter_name))) { |
|
fprintf(stderr, "Impossible to open filter with name '%s'\n", |
|
filter_name); |
|
return 1; |
|
} |
|
if (avfilter_init_str(filter_ctx, filter_args) < 0) { |
|
fprintf(stderr, "Impossible to init filter '%s' with arguments '%s'\n", |
|
filter_name, filter_args); |
|
return 1; |
|
} |
|
|
|
/* create a link for each of the input pads */ |
|
for (i = 0; i < filter_ctx->nb_inputs; i++) { |
|
AVFilterLink *link = av_mallocz(sizeof(AVFilterLink)); |
|
link->type = avfilter_pad_get_type(filter_ctx->filter->inputs, i); |
|
filter_ctx->inputs[i] = link; |
|
} |
|
for (i = 0; i < filter_ctx->nb_outputs; i++) { |
|
AVFilterLink *link = av_mallocz(sizeof(AVFilterLink)); |
|
link->type = avfilter_pad_get_type(filter_ctx->filter->outputs, i); |
|
filter_ctx->outputs[i] = link; |
|
} |
|
|
|
if (filter->query_formats) |
|
filter->query_formats(filter_ctx); |
|
else |
|
ff_default_query_formats(filter_ctx); |
|
|
|
/* print the supported formats in input */ |
|
for (i = 0; i < filter_ctx->nb_inputs; i++) { |
|
AVFilterFormats *fmts = filter_ctx->inputs[i]->out_formats; |
|
for (j = 0; j < fmts->nb_formats; j++) |
|
printf("INPUT[%d] %s: %s\n", |
|
i, avfilter_pad_get_name(filter_ctx->filter->inputs, i), |
|
av_get_pix_fmt_name(fmts->formats[j])); |
|
} |
|
|
|
/* print the supported formats in output */ |
|
for (i = 0; i < filter_ctx->nb_outputs; i++) { |
|
AVFilterFormats *fmts = filter_ctx->outputs[i]->in_formats; |
|
for (j = 0; j < fmts->nb_formats; j++) |
|
printf("OUTPUT[%d] %s: %s\n", |
|
i, avfilter_pad_get_name(filter_ctx->filter->outputs, i), |
|
av_get_pix_fmt_name(fmts->formats[j])); |
|
} |
|
|
|
avfilter_free(filter_ctx); |
|
avfilter_graph_free(&graph_ctx); |
|
fflush(stdout); |
|
return 0; |
|
}
|
|
|