40 printf(
"Convert a libavfilter graph to a dot file.\n");
41 printf(
"Usage: graph2dot [OPTIONS]\n");
44 "-i INFILE set INFILE as input file, stdin if omitted\n"
45 "-o OUTFILE set OUTFILE as output file, stdout if omitted\n"
46 "-h print this help\n");
58 fprintf(outfile,
"digraph G {\n");
59 fprintf(outfile,
"node [shape=box]\n");
60 fprintf(outfile,
"rankdir=LR\n");
63 char filter_ctx_label[128];
66 snprintf(filter_ctx_label,
sizeof(filter_ctx_label),
"%s (%s)",
73 char dst_filter_ctx_label[128];
76 snprintf(dst_filter_ctx_label,
sizeof(dst_filter_ctx_label),
81 fprintf(outfile,
"\"%s\" -> \"%s\"",
82 filter_ctx_label, dst_filter_ctx_label);
86 " [ label= \"fmt:%s w:%d h:%d tb:%d/%d\" ]",
94 " [ label= \"fmt:%s sr:%d cl:%s\" ]",
98 fprintf(outfile,
";\n");
102 fprintf(outfile,
"}\n");
105 int main(
int argc,
char **argv)
107 const char *outfilename =
NULL;
108 const char *infilename =
NULL;
111 char *graph_string =
NULL;
117 while ((c =
getopt(argc, argv,
"hi:o:")) != -1) {
133 if (!infilename || !strcmp(infilename,
"-"))
134 infilename =
"/dev/stdin";
135 infile = fopen(infilename,
"r");
137 fprintf(stderr,
"Failed to open input file '%s': %s\n",
138 infilename, strerror(errno));
142 if (!outfilename || !strcmp(outfilename,
"-"))
143 outfilename =
"/dev/stdout";
144 outfile = fopen(outfilename,
"w");
146 fprintf(stderr,
"Failed to open output file '%s': %s\n",
147 outfilename, strerror(errno));
153 unsigned int count = 0;
154 struct line *
line, *last_line, *first_line;
156 last_line = first_line =
av_malloc(
sizeof(
struct line));
158 while (fgets(last_line->
data,
sizeof(last_line->
data), infile)) {
159 struct line *new_line =
av_malloc(
sizeof(
struct line));
160 count += strlen(last_line->
data);
161 last_line->
next = new_line;
162 last_line = new_line;
168 for (line = first_line; line->
next; line = line->
next) {
169 unsigned int l = strlen(line->
data);
170 memcpy(p, line->
data, l);
179 fprintf(stderr,
"Failed to parse the graph description\n");