/* * Copyright (c) 2009 Stefano Sabatini * * This file is part of FFmpeg. * * FFmpeg 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. * * FFmpeg 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 FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include <stdio.h> #include "libavutil/channel_layout.h" #include "libavutil/mem.h" #include "libavutil/pixdesc.h" #include "libavutil/samplefmt.h" #include "libavfilter/avfilter.h" #include "libavfilter/formats.h" static void print_formats(AVFilterContext *filter_ctx) { int i, j; #define PRINT_FMTS(inout, outin, INOUT) \ for (i = 0; i < filter_ctx->nb_##inout##puts; i++) { \ if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_VIDEO) { \ AVFilterFormats *fmts = \ filter_ctx->inout##puts[i]->outin##_formats; \ for (j = 0; j < fmts->nb_formats; j++) \ if(av_get_pix_fmt_name(fmts->formats[j])) \ printf(#INOUT "PUT[%d] %s: fmt:%s\n", \ i, avfilter_pad_get_name(filter_ctx->inout##put_pads, i), \ av_get_pix_fmt_name(fmts->formats[j])); \ } else if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_AUDIO) { \ AVFilterFormats *fmts; \ AVFilterChannelLayouts *layouts; \ \ fmts = filter_ctx->inout##puts[i]->outin##_formats; \ for (j = 0; j < fmts->nb_formats; j++) \ printf(#INOUT "PUT[%d] %s: fmt:%s\n", \ i, avfilter_pad_get_name(filter_ctx->inout##put_pads, i), \ av_get_sample_fmt_name(fmts->formats[j])); \ \ layouts = filter_ctx->inout##puts[i]->outin##_channel_layouts; \ for (j = 0; j < layouts->nb_channel_layouts; j++) { \ char buf[256]; \ av_get_channel_layout_string(buf, sizeof(buf), -1, \ layouts->channel_layouts[j]); \ printf(#INOUT "PUT[%d] %s: chlayout:%s\n", \ i, avfilter_pad_get_name(filter_ctx->inout##put_pads, i), buf); \ } \ } \ } \ PRINT_FMTS(in, out, IN); PRINT_FMTS(out, in, OUT); } 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; int ret = 0; av_log_set_level(AV_LOG_DEBUG); if (argc < 2) { fprintf(stderr, "Missing filter name as argument\n"); return 1; } filter_name = argv[1]; if (argc > 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)); if (!link) { fprintf(stderr, "Unable to allocate memory for filter input link\n"); ret = 1; goto fail; } link->type = avfilter_pad_get_type(filter_ctx->input_pads, i); filter_ctx->inputs[i] = link; } for (i = 0; i < filter_ctx->nb_outputs; i++) { AVFilterLink *link = av_mallocz(sizeof(AVFilterLink)); if (!link) { fprintf(stderr, "Unable to allocate memory for filter output link\n"); ret = 1; goto fail; } link->type = avfilter_pad_get_type(filter_ctx->output_pads, i); filter_ctx->outputs[i] = link; } if (filter->query_formats) filter->query_formats(filter_ctx); else ff_default_query_formats(filter_ctx); print_formats(filter_ctx); fail: avfilter_free(filter_ctx); avfilter_graph_free(&graph_ctx); fflush(stdout); return ret; }