| @@ -0,0 +1,98 @@ |
| 1 | +/* |
| 2 | + * Copyright (c) 2009 Stefano Sabatini |
| 3 | + * |
| 4 | + * This file is part of FFmpeg. |
| 5 | + * |
| 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. |
| 10 | + * |
| 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. |
| 15 | + * |
| 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 |
| 19 | + */ |
| 20 | + |
| 21 | +#include "libavformat/avformat.h" |
| 22 | +#include "libavutil/pixdesc.h" |
| 23 | +#include "libavfilter/avfilter.h" |
| 24 | + |
| 25 | +int main(int argc, char **argv) |
| 26 | +{ |
| 27 | + AVFilter *filter; |
| 28 | + AVFilterContext *filter_ctx; |
| 29 | + const char *filter_name; |
| 30 | + const char *filter_args = NULL; |
| 31 | + int i, j; |
| 32 | + |
| 33 | + av_log_set_level(AV_LOG_DEBUG); |
| 34 | + |
| 35 | + if (!argv[1]) { |
| 36 | + fprintf(stderr, "Missing filter name as argument\n"); |
| 37 | + return 1; |
| 38 | + } |
| 39 | + |
| 40 | + filter_name = argv[1]; |
| 41 | + if (argv[2]) |
| 42 | + filter_args = argv[2]; |
| 43 | + |
| 44 | + avfilter_register_all(); |
| 45 | + |
| 46 | + /* get a corresponding filter and open it */ |
| 47 | + if (!(filter = avfilter_get_by_name(filter_name))) { |
| 48 | + fprintf(stderr, "Unrecognized filter with name '%s'\n", filter_name); |
| 49 | + return 1; |
| 50 | + } |
| 51 | + |
| 52 | + if (!(filter_ctx = avfilter_open(filter, NULL))) { |
| 53 | + fprintf(stderr, "Inpossible to open filter with name '%s'\n", filter_name); |
| 54 | + return 1; |
| 55 | + } |
| 56 | + if (avfilter_init_filter(filter_ctx, filter_args, NULL) < 0) { |
| 57 | + fprintf(stderr, "Impossible to init filter '%s' with arguments '%s'\n", filter_name, filter_args); |
| 58 | + return 1; |
| 59 | + } |
| 60 | + |
| 61 | + /* create a link for each of the input pads */ |
| 62 | + for (i = 0; i < filter_ctx->input_count; i++) { |
| 63 | + AVFilterLink *link = av_malloc(sizeof(AVFilterLink)); |
| 64 | + filter_ctx->inputs[i] = link; |
| 65 | + } |
| 66 | + for (i = 0; i < filter_ctx->output_count; i++) { |
| 67 | + AVFilterLink *link = av_malloc(sizeof(AVFilterLink)); |
| 68 | + filter_ctx->outputs[i] = link; |
| 69 | + } |
| 70 | + |
| 71 | + if (filter->query_formats) |
| 72 | + filter->query_formats(filter_ctx); |
| 73 | + else |
| 74 | + avfilter_default_query_formats(filter_ctx); |
| 75 | + |
| 76 | + /* print the supported formats in input */ |
| 77 | + for (i = 0; i < filter_ctx->input_count; i++) { |
| 78 | + AVFilterFormats *fmts = filter_ctx->inputs[i]->out_formats; |
| 79 | + |
| 80 | + printf("INPUT[%d] %s: ", i, filter_ctx->filter->inputs[i].name); |
| 81 | + for (j = 0; j < fmts->format_count; j++) |
| 82 | + printf("%s ", av_pix_fmt_descriptors[fmts->formats[j]].name); |
| 83 | + printf("\n"); |
| 84 | + } |
| 85 | + |
| 86 | + /* print the supported formats in output */ |
| 87 | + for (i = 0; i < filter_ctx->output_count; i++) { |
| 88 | + AVFilterFormats *fmts = filter_ctx->outputs[i]->in_formats; |
| 89 | + |
| 90 | + printf("OUTPUT[%d] %s: ", i, filter_ctx->filter->outputs[i].name); |
| 91 | + for (j = 0; j < fmts->format_count; j++) |
| 92 | + printf("%s ", av_pix_fmt_descriptors[fmts->formats[j]].name); |
| 93 | + printf("\n"); |
| 94 | + } |
| 95 | + |
| 96 | + fflush(stdout); |
| 97 | + return 0; |
| 98 | +} |