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FFmpeg/tools/graph2dot.c

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/*
* Copyright (c) 2008-2010 Stefano Sabatini
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#if HAVE_UNISTD_H
#include <unistd.h> /* getopt */
#endif
#include <stdio.h>
#include <string.h>
#include "libavutil/channel_layout.h"
#include "libavutil/mem.h"
#include "libavutil/pixdesc.h"
#include "libavfilter/avfilter.h"
#if !HAVE_GETOPT
#include "compat/getopt.c"
#endif
static void usage(void)
{
printf("Convert a libavfilter graph to a dot file.\n");
printf("Usage: graph2dot [OPTIONS]\n");
printf("\n"
"Options:\n"
"-i INFILE set INFILE as input file, stdin if omitted\n"
"-o OUTFILE set OUTFILE as output file, stdout if omitted\n"
"-h print this help\n");
}
struct line {
char data[256];
struct line *next;
};
static void print_digraph(FILE *outfile, AVFilterGraph *graph)
{
int i, j;
fprintf(outfile, "digraph G {\n");
fprintf(outfile, "node [shape=box]\n");
fprintf(outfile, "rankdir=LR\n");
for (i = 0; i < graph->nb_filters; i++) {
char filter_ctx_label[128];
const AVFilterContext *filter_ctx = graph->filters[i];
snprintf(filter_ctx_label, sizeof(filter_ctx_label), "%s\\n(%s)",
filter_ctx->name,
filter_ctx->filter->name);
for (j = 0; j < filter_ctx->nb_outputs; j++) {
AVFilterLink *link = filter_ctx->outputs[j];
if (link) {
char dst_filter_ctx_label[128];
const AVFilterContext *dst_filter_ctx = link->dst;
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snprintf(dst_filter_ctx_label, sizeof(dst_filter_ctx_label),
"%s\\n(%s)",
dst_filter_ctx->name,
dst_filter_ctx->filter->name);
fprintf(outfile, "\"%s\" -> \"%s\" [ label= \"inpad:%s -> outpad:%s\\n",
filter_ctx_label, dst_filter_ctx_label,
avfilter_pad_get_name(link->srcpad, 0),
avfilter_pad_get_name(link->dstpad, 0));
if (link->type == AVMEDIA_TYPE_VIDEO) {
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
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fprintf(outfile,
"fmt:%s w:%d h:%d tb:%d/%d",
desc->name,
link->w, link->h,
link->time_base.num, link->time_base.den);
} else if (link->type == AVMEDIA_TYPE_AUDIO) {
char buf[255];
av_channel_layout_describe(&link->ch_layout, buf, sizeof(buf));
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fprintf(outfile,
Merge remote-tracking branch 'qatar/master' * qatar/master: (29 commits) lavfi: reclassify showfiltfmts as a TESTPROG graph2dot: fix printf format specifier swscale: yuv2planeX 8bit >=sse2 functions need aligned stack on x86-32. vp8: loopfilter >=sse2 functions need aligned stack on x86-32. amr: remove shift out of the AMR_BIT() macro. dsputilenc: group yasm and inline asm function pointer assignment. mov: use forward declaration of a function instead of a table. Clarify Doxygen comment for FF_API_* #defines. configure: simplify get_version() Create version.h headers for libraries that lack them gitignore: Use full path instead of relative path to specify patterns mpegvideo: remove VLAs Add XTEA encryption support in libavutil Add Blowfish encryption support in libavutil eval: Add the isinf() function and tests for it flacdec: move lpc filter to flacdsp flacdec: split off channel decorrelation as flacdsp avplay: Add an option for not limiting the input buffer size FATE: add a test for WMA cover art. FATE: add a test for apetag cover art ... Conflicts: .gitignore configure ffplay.c libavcodec/Makefile libavcodec/error_resilience.c libavcodec/mpegvideo.c libavcodec/ratecontrol.c libavdevice/avdevice.h libavfilter/Makefile libavfilter/filtfmts.c libavfilter/version.h libavformat/mov.c libavformat/version.h libavutil/Makefile libavutil/avutil.h libavutil/version.h libswscale/swscale.h libswscale/x86/swscale_mmx.c tests/fate/libavutil.mak tests/lavfi-regression.sh tools/graph2dot.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-07-04 21:39:50 +03:00
"fmt:%s sr:%d cl:%s tb:%d/%d",
av_get_sample_fmt_name(link->format),
link->sample_rate, buf,
link->time_base.num, link->time_base.den);
}
fprintf(outfile, "\" ];\n");
}
}
}
fprintf(outfile, "}\n");
}
int main(int argc, char **argv)
{
const char *outfilename = NULL;
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const char *infilename = NULL;
FILE *outfile = NULL;
FILE *infile = NULL;
char *graph_string = NULL;
AVFilterGraph *graph = NULL;
char c;
av_log_set_level(AV_LOG_DEBUG);
while ((c = getopt(argc, argv, "hi:o:")) != -1) {
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switch (c) {
case 'h':
usage();
return 0;
case 'i':
infilename = optarg;
break;
case 'o':
outfilename = optarg;
break;
case '?':
return 1;
}
}
if (!infilename || !strcmp(infilename, "-"))
infilename = "/dev/stdin";
infile = fopen(infilename, "r");
if (!infile) {
fprintf(stderr, "Failed to open input file '%s': %s\n",
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infilename, strerror(errno));
return 1;
}
if (!outfilename || !strcmp(outfilename, "-"))
outfilename = "/dev/stdout";
outfile = fopen(outfilename, "w");
if (!outfile) {
fprintf(stderr, "Failed to open output file '%s': %s\n",
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outfilename, strerror(errno));
return 1;
}
/* read from infile and put it in a buffer */
{
int64_t count = 0;
struct line *line, *last_line, *first_line;
char *p;
last_line = first_line = av_malloc(sizeof(struct line));
if (!last_line) {
fprintf(stderr, "Memory allocation failure\n");
return 1;
}
while (fgets(last_line->data, sizeof(last_line->data), infile)) {
struct line *new_line = av_malloc(sizeof(struct line));
if (!new_line) {
fprintf(stderr, "Memory allocation failure\n");
return 1;
}
count += strlen(last_line->data);
last_line->next = new_line;
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last_line = new_line;
}
last_line->next = NULL;
graph_string = av_malloc(count + 1);
if (!graph_string) {
fprintf(stderr, "Memory allocation failure\n");
return 1;
}
p = graph_string;
for (line = first_line; line->next; line = line->next) {
size_t l = strlen(line->data);
memcpy(p, line->data, l);
p += l;
}
*p = '\0';
}
graph = avfilter_graph_alloc();
if (!graph) {
fprintf(stderr, "Memory allocation failure\n");
return 1;
}
if (avfilter_graph_parse(graph, graph_string, NULL, NULL, NULL) < 0) {
fprintf(stderr, "Failed to parse the graph description\n");
return 1;
}
if (avfilter_graph_config(graph, NULL) < 0)
return 1;
print_digraph(outfile, graph);
fflush(outfile);
return 0;
}