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
22 #if HAVE_UNISTD_H
23 #include <unistd.h> /* getopt */
24 #endif
25 #include <stdio.h>
26 #include <string.h>
27
32
33 #if !HAVE_GETOPT
35 #endif
36
38 {
39 printf("Convert a libavfilter graph to a dot file.\n");
40 printf("Usage: graph2dot [OPTIONS]\n");
41 printf("\n"
42 "Options:\n"
43 "-i INFILE set INFILE as input file, stdin if omitted\n"
44 "-o OUTFILE set OUTFILE as output file, stdout if omitted\n"
45 "-h print this help\n");
46 }
47
51 };
52
54 {
55 int i, j;
56
57 fprintf(outfile, "digraph G {\n");
58 fprintf(outfile, "node [shape=box]\n");
59 fprintf(outfile, "rankdir=LR\n");
60
62 char filter_ctx_label[128];
64
65 snprintf(filter_ctx_label,
sizeof(filter_ctx_label),
"%s\\n(%s)",
68
71 if (link) {
72 char dst_filter_ctx_label[128];
74
75 snprintf(dst_filter_ctx_label,
sizeof(dst_filter_ctx_label),
76 "%s\\n(%s)",
79
80 fprintf(outfile, "\"%s\" -> \"%s\" [ label= \"inpad:%s -> outpad:%s\\n",
81 filter_ctx_label, dst_filter_ctx_label,
84
87 fprintf(outfile,
88 "fmt:%s w:%d h:%d tb:%d/%d",
96 fprintf(outfile,
97 "fmt:%s sr:%d cl:%s tb:%d/%d",
101 }
102 fprintf(outfile, "\" ];\n");
103 }
104 }
105 }
106 fprintf(outfile, "}\n");
107 }
108
109 int main(
int argc,
char **argv)
110 {
111 const char *outfilename =
NULL;
112 const char *infilename =
NULL;
115 char *graph_string =
NULL;
118
120
121 while ((c =
getopt(argc, argv,
"hi:o:")) != -1) {
122 switch (c) {
123 case 'h':
125 return 0;
126 case 'i':
128 break;
129 case 'o':
131 break;
132 case '?':
133 return 1;
134 }
135 }
136
137 if (!infilename || !strcmp(infilename, "-"))
138 infilename = "/dev/stdin";
139 infile = fopen(infilename, "r");
140 if (!infile) {
141 fprintf(stderr, "Failed to open input file '%s': %s\n",
142 infilename, strerror(errno));
143 return 1;
144 }
145
146 if (!outfilename || !strcmp(outfilename, "-"))
147 outfilename = "/dev/stdout";
148 outfile = fopen(outfilename, "w");
149 if (!outfile) {
150 fprintf(stderr, "Failed to open output file '%s': %s\n",
151 outfilename, strerror(errno));
152 return 1;
153 }
154
155 /* read from infile and put it in a buffer */
156 {
158 struct line *
line, *last_line, *first_line;
159 char *p;
160 last_line = first_line =
av_malloc(
sizeof(
struct line));
161 if (!last_line) {
162 fprintf(stderr, "Memory allocation failure\n");
163 return 1;
164 }
165
166 while (fgets(last_line->
data,
sizeof(last_line->
data), infile)) {
167 struct line *new_line =
av_malloc(
sizeof(
struct line));
168 if (!new_line) {
169 fprintf(stderr, "Memory allocation failure\n");
170 return 1;
171 }
172 count += strlen(last_line->
data);
173 last_line->
next = new_line;
174 last_line = new_line;
175 }
177
179 if (!graph_string) {
180 fprintf(stderr, "Memory allocation failure\n");
181 return 1;
182 }
183 p = graph_string;
184 for (line = first_line; line->
next; line = line->
next) {
185 size_t l = strlen(line->
data);
186 memcpy(p, line->
data, l);
187 p += l;
188 }
189 *p = '0円';
190 }
191
193
195 fprintf(stderr, "Failed to parse the graph description\n");
196 return 1;
197 }
198
200 return 1;
201
203 fflush(outfile);
204
205 return 0;
206 }
AVFilterContext ** filters
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
ptrdiff_t const GLvoid * data
Main libavfilter public API header.
Memory handling functions.
void av_log_set_level(int level)
Set the log level.
int avfilter_graph_config(AVFilterGraph *graphctx, void *log_ctx)
Check validity and configure all the links and formats in the graph.
int h
agreed upon image height
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
AVFilterPad * dstpad
input pad on the dest filter
char * name
name of this filter instance
static void print_digraph(FILE *outfile, AVFilterGraph *graph)
void avfilter_register_all(void)
Initialize the filter system.
int main(int argc, char **argv)
A link between two filters.
int sample_rate
samples per second
unsigned nb_outputs
number of output pads
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link...
static FilteringContext * filter_ctx
const char * av_get_sample_fmt_name(enum AVSampleFormat sample_fmt)
Return the name of sample_fmt, or NULL if sample_fmt is not recognized.
int w
agreed upon image width
audio channel layout utility functions
int format
agreed upon media format
void av_get_channel_layout_string(char *buf, int buf_size, int nb_channels, uint64_t channel_layout)
Return a description of a channel layout.
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
static int getopt(int argc, char *argv[], char *opts)
int avfilter_graph_parse(AVFilterGraph *graph, const char *filters, AVFilterInOut *inputs, AVFilterInOut *outputs, void *log_ctx)
Add a graph described by a string to a graph.
const char * name
Filter name.
const char * avfilter_pad_get_name(const AVFilterPad *pads, int pad_idx)
Get the name of an AVFilterPad.
AVFilterLink ** outputs
array of pointers to output links
enum AVMediaType type
filter media type
uint64_t channel_layout
channel layout of current buffer (see libavutil/channel_layout.h)
AVFilterContext * dst
dest filter
AVFilterPad * srcpad
output pad on the source filter
const AVFilter * filter
the AVFilter of which this is an instance