spdifenc: set flag AVFMT_NOTIMESTAMPS
[libav.git] / tools / graph2dot.c
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1/*
2 * Copyright (c) 2008-2010 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 <unistd.h> /* getopt */
22
23#undef HAVE_AV_CONFIG_H
24#include "libavutil/pixdesc.h"
1e80a0ea 25#include "libavfilter/avfiltergraph.h"
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26
27static void usage(void)
28{
29 printf("Convert a libavfilter graph to a dot file\n");
30 printf("Usage: graph2dot [OPTIONS]\n");
31 printf("\n"
32 "Options:\n"
33 "-i INFILE set INFILE as input file, stdin if omitted\n"
34 "-o OUTFILE set OUTFILE as output file, stdout if omitted\n"
35 "-h print this help\n");
36}
37
38struct line {
39 char data[256];
40 struct line *next;
41};
42
43static void print_digraph(FILE *outfile, AVFilterGraph *graph)
44{
45 int i, j;
46
47 fprintf(outfile, "digraph G {\n");
48 fprintf(outfile, "node [shape=box]\n");
49 fprintf(outfile, "rankdir=LR\n");
50
51 for (i = 0; i < graph->filter_count; i++) {
52 char filter_ctx_label[128];
53 const AVFilterContext *filter_ctx = graph->filters[i];
54
55 snprintf(filter_ctx_label, sizeof(filter_ctx_label), "%s (%s)",
56 filter_ctx->name,
57 filter_ctx->filter->name);
58
59 for (j = 0; j < filter_ctx->output_count; j++) {
60 AVFilterLink *link = filter_ctx->outputs[j];
61 if (link) {
62 char dst_filter_ctx_label[128];
63 const AVFilterContext *dst_filter_ctx = link->dst;
64
65 snprintf(dst_filter_ctx_label, sizeof(dst_filter_ctx_label), "%s (%s)",
66 dst_filter_ctx->name,
67 dst_filter_ctx->filter->name);
68
69 fprintf(outfile, "\"%s\" -> \"%s\"", filter_ctx_label, dst_filter_ctx_label);
47453c0e 70 fprintf(outfile, " [ label= \"fmt:%s w:%d h:%d tb:%d/%d\" ];\n",
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71 link->type == AVMEDIA_TYPE_VIDEO ? av_pix_fmt_descriptors[link->format].name :
72 link->type == AVMEDIA_TYPE_AUDIO ? av_get_sample_fmt_name(link->format) : "unknown",
73 link->w, link->h, link->time_base.num, link->time_base.den);
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74 }
75 }
76 }
77 fprintf(outfile, "}\n");
78}
79
80int main(int argc, char **argv)
81{
82 const char *outfilename = NULL;
83 const char *infilename = NULL;
84 FILE *outfile = NULL;
85 FILE *infile = NULL;
86 char *graph_string = NULL;
87 AVFilterGraph *graph = av_mallocz(sizeof(AVFilterGraph));
88 char c;
89
90 av_log_set_level(AV_LOG_DEBUG);
91
92 while ((c = getopt(argc, argv, "hi:o:")) != -1) {
93 switch(c) {
94 case 'h':
95 usage();
96 return 0;
97 case 'i':
98 infilename = optarg;
99 break;
100 case 'o':
101 outfilename = optarg;
102 break;
103 case '?':
104 return 1;
105 }
106 }
107
108 if (!infilename || !strcmp(infilename, "-"))
109 infilename = "/dev/stdin";
110 infile = fopen(infilename, "r");
111 if (!infile) {
112 fprintf(stderr, "Impossible to open input file '%s': %s\n", infilename, strerror(errno));
113 return 1;
114 }
115
116 if (!outfilename || !strcmp(outfilename, "-"))
117 outfilename = "/dev/stdout";
118 outfile = fopen(outfilename, "w");
119 if (!outfile) {
120 fprintf(stderr, "Impossible to open output file '%s': %s\n", outfilename, strerror(errno));
121 return 1;
122 }
123
124 /* read from infile and put it in a buffer */
125 {
126 unsigned int count = 0;
127 struct line *line, *last_line, *first_line;
128 char *p;
129 last_line = first_line = av_malloc(sizeof(struct line));
130
131 while (fgets(last_line->data, sizeof(last_line->data), infile)) {
132 struct line *new_line = av_malloc(sizeof(struct line));
133 count += strlen(last_line->data);
134 last_line->next = new_line;
135 last_line = new_line;
136 }
137 last_line->next = NULL;
138
139 graph_string = av_malloc(count + 1);
140 p = graph_string;
141 for (line = first_line; line->next; line = line->next) {
142 unsigned int l = strlen(line->data);
143 memcpy(p, line->data, l);
144 p += l;
145 }
146 *p = '\0';
147 }
148
149 avfilter_register_all();
150
151 if (avfilter_graph_parse(graph, graph_string, NULL, NULL, NULL) < 0) {
152 fprintf(stderr, "Impossible to parse the graph description\n");
153 return 1;
154 }
155
2a24df93 156 if (avfilter_graph_config(graph, NULL) < 0)
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157 return 1;
158
159 print_digraph(outfile, graph);
160 fflush(outfile);
161
162 return 0;
163}