137 lines
5.2 KiB
C
137 lines
5.2 KiB
C
/*
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* Copyright (c) 2009 Stefano Sabatini
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 "libavutil/samplefmt.h"
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#include "libavfilter/avfilter.h"
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#include "libavfilter/formats.h"
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static void print_formats(AVFilterContext *filter_ctx)
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{
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int i, j;
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#define PRINT_FMTS(inout, outin, INOUT) \
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for (i = 0; i < filter_ctx->nb_##inout##puts; i++) { \
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if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_VIDEO) { \
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AVFilterFormats *fmts = \
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filter_ctx->inout##puts[i]->outin##_formats; \
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for (j = 0; j < fmts->nb_formats; j++) \
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if(av_get_pix_fmt_name(fmts->formats[j])) \
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printf(#INOUT "PUT[%d] %s: fmt:%s\n", \
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i, filter_ctx->filter->inout##puts[i].name, \
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av_get_pix_fmt_name(fmts->formats[j])); \
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} else if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_AUDIO) { \
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AVFilterFormats *fmts; \
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AVFilterChannelLayouts *layouts; \
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\
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fmts = filter_ctx->inout##puts[i]->outin##_formats; \
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for (j = 0; j < fmts->nb_formats; j++) \
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printf(#INOUT "PUT[%d] %s: fmt:%s\n", \
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i, filter_ctx->filter->inout##puts[i].name, \
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av_get_sample_fmt_name(fmts->formats[j])); \
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\
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layouts = filter_ctx->inout##puts[i]->outin##_channel_layouts; \
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for (j = 0; j < layouts->nb_channel_layouts; j++) { \
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char buf[256]; \
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av_get_channel_layout_string(buf, sizeof(buf), -1, \
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layouts->channel_layouts[j]); \
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printf(#INOUT "PUT[%d] %s: chlayout:%s\n", \
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i, filter_ctx->filter->inout##puts[i].name, buf); \
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} \
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} \
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} \
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PRINT_FMTS(in, out, IN);
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PRINT_FMTS(out, in, OUT);
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}
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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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AVFilterGraph *graph_ctx;
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const char *filter_name;
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const char *filter_args = NULL;
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int i;
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av_log_set_level(AV_LOG_DEBUG);
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if (argc < 2) {
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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 (argc > 2)
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filter_args = argv[2];
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/* allocate graph */
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graph_ctx = avfilter_graph_alloc();
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if (!graph_ctx)
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return 1;
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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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/* open filter and add it to the graph */
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if (!(filter_ctx = avfilter_graph_alloc_filter(graph_ctx, filter, filter_name))) {
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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->nb_inputs; 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->nb_outputs; 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_formats(filter_ctx);
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avfilter_free(filter_ctx);
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avfilter_graph_free(&graph_ctx);
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fflush(stdout);
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return 0;
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}
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