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