upload sdk

git-svn-id: svn://kolibrios.org@4349 a494cfbc-eb01-0410-851d-a64ba20cac60

contrib/sdk/sources/ffmpeg/tools/graph2dot.c

@@ -0,0 +1,193 @@
+/*
+ * 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,
+                        link->srcpad->name, link->dstpad->name);
+
+                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 */
+    {
+        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, "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;
+}