From: Limin Wang <lance.lmw...@gmail.com>
reuse the function from tools/graph2dot.c and add support for filter graph with
graphviz DOT format for avfilter directly. So tools/graph2dot.c is duplicated
and can be removed.
In addition, make the options are pair-key format, now it support two key:
fmt=DOT|dot
filename=./outfile
Signed-off-by: Limin Wang <lance.lmw...@gmail.com>
---
libavfilter/graphdump.c | 89 +++++++++++++++++++++
tools/graph2dot.c | 204 ------------------------------------------------
2 files changed, 89 insertions(+), 204 deletions(-)
delete mode 100644 tools/graph2dot.c
diff --git a/libavfilter/graphdump.c b/libavfilter/graphdump.c
index 79ef1a7..97d4f39 100644
--- a/libavfilter/graphdump.c
+++ b/libavfilter/graphdump.c
@@ -151,15 +151,104 @@ static void avfilter_graph_dump_to_buf(AVBPrint *buf,
AVFilterGraph *graph)
}
}
+static void avfilter_graph2dot_to_buf(AVBPrint *buf, AVFilterGraph *graph)
+{
+ int i, j;
+
+ av_bprintf(buf, "digraph G {\n");
+ av_bprintf(buf, "node [shape=box]\n");
+ av_bprintf(buf, "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;
+
+ snprintf(dst_filter_ctx_label, sizeof(dst_filter_ctx_label),
+ "%s\\n(%s)",
+ dst_filter_ctx->name,
+ dst_filter_ctx->filter->name);
+
+ av_bprintf(buf, "\"%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);
+ av_bprintf(buf,
+ "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 audio_buf[255];
+ av_get_channel_layout_string(audio_buf, sizeof(audio_buf),
-1,
+ link->channel_layout);
+ av_bprintf(buf,
+ "fmt:%s sr:%d cl:%s tb:%d/%d",
+ av_get_sample_fmt_name(link->format),
+ link->sample_rate, audio_buf,
+ link->time_base.num, link->time_base.den);
+ }
+ av_bprintf(buf, "\" ];\n");
+ }
+ }
+ }
+ av_bprintf(buf, "}\n");
+}
+
char *avfilter_graph_dump(AVFilterGraph *graph, const char *options)
{
AVBPrint buf;
char *dump = NULL;
+ int ret;
+ AVDictionary *dict = NULL;
+ AVDictionaryEntry *format = NULL;
+ AVDictionaryEntry *filename = NULL;
+
+ ret = av_dict_parse_string(&dict, options, "=", ":", 0);
+ if (ret < 0) {
+ av_dict_free(&dict);
+ return NULL;
+ }
+ format = av_dict_get(dict, "fmt", NULL, 0);
+ if (format && !av_strcasecmp(format->value, "DOT")) {
+ av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
+ avfilter_graph2dot_to_buf(&buf, graph);
+ av_bprint_finalize(&buf, &dump);
+ } else {
av_bprint_init(&buf, 0, AV_BPRINT_SIZE_COUNT_ONLY);
avfilter_graph_dump_to_buf(&buf, graph);
av_bprint_init(&buf, buf.len + 1, buf.len + 1);
avfilter_graph_dump_to_buf(&buf, graph);
av_bprint_finalize(&buf, &dump);
+ }
+
+ if (filename = av_dict_get(dict, "filename", NULL, 0)) {
+ FILE* file = fopen(filename->value, "w");
+ if (!file) {
+ av_log(graph, AV_LOG_ERROR, "failed to open: %s \n",
filename->value);
+ av_freep(&dump);
+ return NULL;
+ }
+ if (dump) {
+ fputs(dump, file);
+ fflush(file);
+ }
+ fclose(file);
+ }
+
+ av_dict_free(&dict);
return dump;
}
diff --git a/tools/graph2dot.c b/tools/graph2dot.c
deleted file mode 100644
index d5c1e4e..0000000
--- a/tools/graph2dot.c
+++ /dev/null
@@ -1,204 +0,0 @@
-/*
- * 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;
-
- 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);
- 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_get_channel_layout_string(buf, sizeof(buf), -1,
- link->channel_layout);
- fprintf(outfile,
- "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;
- const char *infilename = NULL;
- FILE *outfile = NULL;
- FILE *infile = NULL;
- char *graph_string = NULL;
- AVFilterGraph *graph = av_mallocz(sizeof(AVFilterGraph));
- char c;
-
- av_log_set_level(AV_LOG_DEBUG);
-
- while ((c = getopt(argc, argv, "hi:o:")) != -1) {
- 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",
- 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",
- 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;
- 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';
- }
-
- 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;
-}
--
1.8.3.1
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