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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 | } |