| 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 <stdio.h> |
| 22 | |
| 23 | #include "libavutil/channel_layout.h" |
| 24 | #include "libavutil/mem.h" |
| 25 | #include "libavutil/pixdesc.h" |
| 26 | #include "libavutil/samplefmt.h" |
| 27 | |
| 28 | #include "libavfilter/avfilter.h" |
| 29 | #include "libavfilter/formats.h" |
| 30 | |
| 31 | static void print_formats(AVFilterContext *filter_ctx) |
| 32 | { |
| 33 | int i, j; |
| 34 | |
| 35 | #define PRINT_FMTS(inout, outin, INOUT) \ |
| 36 | for (i = 0; i < filter_ctx->nb_##inout##puts; i++) { \ |
| 37 | if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_VIDEO) { \ |
| 38 | AVFilterFormats *fmts = \ |
| 39 | filter_ctx->inout##puts[i]->outin##_formats; \ |
| 40 | for (j = 0; j < fmts->nb_formats; j++) \ |
| 41 | if(av_get_pix_fmt_name(fmts->formats[j])) \ |
| 42 | printf(#INOUT "PUT[%d] %s: fmt:%s\n", \ |
| 43 | i, avfilter_pad_get_name(filter_ctx->inout##put_pads, i), \ |
| 44 | av_get_pix_fmt_name(fmts->formats[j])); \ |
| 45 | } else if (filter_ctx->inout##puts[i]->type == AVMEDIA_TYPE_AUDIO) { \ |
| 46 | AVFilterFormats *fmts; \ |
| 47 | AVFilterChannelLayouts *layouts; \ |
| 48 | \ |
| 49 | fmts = filter_ctx->inout##puts[i]->outin##_formats; \ |
| 50 | for (j = 0; j < fmts->nb_formats; j++) \ |
| 51 | printf(#INOUT "PUT[%d] %s: fmt:%s\n", \ |
| 52 | i, avfilter_pad_get_name(filter_ctx->inout##put_pads, i), \ |
| 53 | av_get_sample_fmt_name(fmts->formats[j])); \ |
| 54 | \ |
| 55 | layouts = filter_ctx->inout##puts[i]->outin##_channel_layouts; \ |
| 56 | for (j = 0; j < layouts->nb_channel_layouts; j++) { \ |
| 57 | char buf[256]; \ |
| 58 | av_get_channel_layout_string(buf, sizeof(buf), -1, \ |
| 59 | layouts->channel_layouts[j]); \ |
| 60 | printf(#INOUT "PUT[%d] %s: chlayout:%s\n", \ |
| 61 | i, avfilter_pad_get_name(filter_ctx->inout##put_pads, i), buf); \ |
| 62 | } \ |
| 63 | } \ |
| 64 | } \ |
| 65 | |
| 66 | PRINT_FMTS(in, out, IN); |
| 67 | PRINT_FMTS(out, in, OUT); |
| 68 | } |
| 69 | |
| 70 | int main(int argc, char **argv) |
| 71 | { |
| 72 | AVFilter *filter; |
| 73 | AVFilterContext *filter_ctx; |
| 74 | AVFilterGraph *graph_ctx; |
| 75 | const char *filter_name; |
| 76 | const char *filter_args = NULL; |
| 77 | int i; |
| 78 | |
| 79 | av_log_set_level(AV_LOG_DEBUG); |
| 80 | |
| 81 | if (argc < 2) { |
| 82 | fprintf(stderr, "Missing filter name as argument\n"); |
| 83 | return 1; |
| 84 | } |
| 85 | |
| 86 | filter_name = argv[1]; |
| 87 | if (argc > 2) |
| 88 | filter_args = argv[2]; |
| 89 | |
| 90 | /* allocate graph */ |
| 91 | graph_ctx = avfilter_graph_alloc(); |
| 92 | if (!graph_ctx) |
| 93 | return 1; |
| 94 | |
| 95 | avfilter_register_all(); |
| 96 | |
| 97 | /* get a corresponding filter and open it */ |
| 98 | if (!(filter = avfilter_get_by_name(filter_name))) { |
| 99 | fprintf(stderr, "Unrecognized filter with name '%s'\n", filter_name); |
| 100 | return 1; |
| 101 | } |
| 102 | |
| 103 | /* open filter and add it to the graph */ |
| 104 | if (!(filter_ctx = avfilter_graph_alloc_filter(graph_ctx, filter, filter_name))) { |
| 105 | fprintf(stderr, "Impossible to open filter with name '%s'\n", |
| 106 | filter_name); |
| 107 | return 1; |
| 108 | } |
| 109 | if (avfilter_init_str(filter_ctx, filter_args) < 0) { |
| 110 | fprintf(stderr, "Impossible to init filter '%s' with arguments '%s'\n", |
| 111 | filter_name, filter_args); |
| 112 | return 1; |
| 113 | } |
| 114 | |
| 115 | /* create a link for each of the input pads */ |
| 116 | for (i = 0; i < filter_ctx->nb_inputs; i++) { |
| 117 | AVFilterLink *link = av_mallocz(sizeof(AVFilterLink)); |
| 118 | link->type = avfilter_pad_get_type(filter_ctx->input_pads, i); |
| 119 | filter_ctx->inputs[i] = link; |
| 120 | } |
| 121 | for (i = 0; i < filter_ctx->nb_outputs; i++) { |
| 122 | AVFilterLink *link = av_mallocz(sizeof(AVFilterLink)); |
| 123 | link->type = avfilter_pad_get_type(filter_ctx->output_pads, i); |
| 124 | filter_ctx->outputs[i] = link; |
| 125 | } |
| 126 | |
| 127 | if (filter->query_formats) |
| 128 | filter->query_formats(filter_ctx); |
| 129 | else |
| 130 | ff_default_query_formats(filter_ctx); |
| 131 | |
| 132 | print_formats(filter_ctx); |
| 133 | |
| 134 | avfilter_free(filter_ctx); |
| 135 | avfilter_graph_free(&graph_ctx); |
| 136 | fflush(stdout); |
| 137 | return 0; |
| 138 | } |