Index: patched-ffmpeg-mt/tools/graph2dot.c |
=================================================================== |
--- patched-ffmpeg-mt/tools/graph2dot.c (revision 0) |
+++ patched-ffmpeg-mt/tools/graph2dot.c (revision 0) |
@@ -0,0 +1,163 @@ |
+/* |
+ * 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 <unistd.h> /* getopt */ |
+ |
+#undef HAVE_AV_CONFIG_H |
+#include "libavutil/pixdesc.h" |
+#include "libavfilter/graphparser.h" |
+ |
+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->filter_count; i++) { |
+ char filter_ctx_label[128]; |
+ const AVFilterContext *filter_ctx = graph->filters[i]; |
+ |
+ snprintf(filter_ctx_label, sizeof(filter_ctx_label), "%s (%s)", |
+ filter_ctx->name, |
+ filter_ctx->filter->name); |
+ |
+ for (j = 0; j < filter_ctx->output_count; 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 (%s)", |
+ dst_filter_ctx->name, |
+ dst_filter_ctx->filter->name); |
+ |
+ fprintf(outfile, "\"%s\" -> \"%s\"", filter_ctx_label, dst_filter_ctx_label); |
+ fprintf(outfile, " [ label= \"fmt:%s w:%d h:%d\"];\n", |
+ av_pix_fmt_descriptors[link->format].name, link->w, link->h); |
+ } |
+ } |
+ } |
+ 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, "Impossible 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, "Impossible to open output file '%s': %s\n", outfilename, strerror(errno)); |
+ return 1; |
+ } |
+ |
+ /* read from infile and put it in a buffer */ |
+ { |
+ unsigned int count = 0; |
+ struct line *line, *last_line, *first_line; |
+ char *p; |
+ last_line = first_line = av_malloc(sizeof(struct line)); |
+ |
+ while (fgets(last_line->data, sizeof(last_line->data), infile)) { |
+ struct line *new_line = av_malloc(sizeof(struct line)); |
+ count += strlen(last_line->data); |
+ last_line->next = new_line; |
+ last_line = new_line; |
+ } |
+ last_line->next = NULL; |
+ |
+ graph_string = av_malloc(count + 1); |
+ p = graph_string; |
+ for (line = first_line; line->next; line = line->next) { |
+ unsigned int l = strlen(line->data); |
+ memcpy(p, line->data, l); |
+ p += l; |
+ } |
+ *p = '\0'; |
+ } |
+ |
+ avfilter_register_all(); |
+ |
+ if (avfilter_graph_parse(graph, graph_string, NULL, NULL, NULL) < 0) { |
+ fprintf(stderr, "Impossible to parse the graph description\n"); |
+ return 1; |
+ } |
+ |
+ if (avfilter_graph_check_validity(graph, NULL) || |
+ avfilter_graph_config_formats(graph, NULL) || |
+ avfilter_graph_config_links (graph, NULL)) |
+ return 1; |
+ |
+ print_digraph(outfile, graph); |
+ fflush(outfile); |
+ |
+ return 0; |
+} |