[Sound-open-firmware] [PATCH v2] topology: utility for visualizing topology
Ranjani Sridharan
ranjani.sridharan at linux.intel.com
Fri May 4 06:14:07 CEST 2018
Add a simple utility that parses topology bin files and
creates a graph using the linux dot tool.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
---
Notes:
v2: amended the license
topology/Makefile.am | 5 ++
topology/parse_topology.c | 147 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 152 insertions(+)
create mode 100644 topology/parse_topology.c
diff --git a/topology/Makefile.am b/topology/Makefile.am
index 73e10e9..b69dfb4 100644
--- a/topology/Makefile.am
+++ b/topology/Makefile.am
@@ -59,3 +59,8 @@ EXTRA_DIST = \
sof-cnl-rt274.m4 \
sof-hsw-rt5640.m4 \
sof-apl-tdf8532.m4
+
+bin_PROGRAMS = tplg_graph
+
+tplg_graph_SOURCES = \
+ parse_topology.c
diff --git a/topology/parse_topology.c b/topology/parse_topology.c
new file mode 100644
index 0000000..69bd559
--- /dev/null
+++ b/topology/parse_topology.c
@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2018, Intel Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the Intel Corporation nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <sound/asoc.h>
+#include <string.h>
+#include <stdlib.h>
+
+/*
+ * The output graph is saved as "tplg.png"
+ * Usage: ./tplg_graph <tplg file>
+ */
+
+int main(int argc, char **argv)
+{
+ struct snd_soc_tplg_hdr *hdr;
+ struct snd_soc_tplg_dapm_graph_elem *graph_elem;
+ char *filename;
+ char *dotfilename = "tplg.dot";
+ FILE *file, *dotfile;
+ char *start = "digraph topology {\n";
+ char *node_color = "node [color=Red,fontname=Courier]\n";
+ char *edge_color = "edge [color=Blue, style=dashed]\n";
+ char *end = "}\n";
+ char edge[256];
+ int i, status, ret;
+ size_t size, file_size;
+
+ /* command line arguments */
+ if (argc < 2) {
+ printf("usage: tplg_graph <tplg file>\n");
+ exit(EXIT_FAILURE);
+ }
+
+ filename = malloc(strlen(argv[1]));
+ strcpy(filename, argv[1]);
+
+ /* open files */
+ file = fopen(filename, "rb");
+ if (!file) {
+ fprintf(stderr, "Unable to open file %s", filename);
+ return -1;
+ }
+
+ dotfile = fopen(dotfilename, "w");
+ if (!dotfile) {
+ fprintf(stderr, "Unable to open file %s", dotfilename);
+ return -1;
+ }
+
+ fwrite(start, strlen(start), 1, dotfile);
+ fwrite(node_color, strlen(node_color), 1, dotfile);
+ fwrite(edge_color, strlen(edge_color), 1, dotfile);
+
+
+ /* file size */
+ fseek(file, 0, SEEK_END);
+ file_size = ftell(file);
+ fseek(file, 0, SEEK_SET);
+
+ /* Allocate memory */
+ size = sizeof(struct snd_soc_tplg_hdr);
+ hdr = (struct snd_soc_tplg_hdr *)malloc(size);
+ if (!hdr) {
+ printf("error: mem alloc\n");
+ return -1;
+ }
+
+ size = sizeof(struct snd_soc_tplg_dapm_graph_elem);
+ graph_elem = (struct snd_soc_tplg_dapm_graph_elem *)malloc(size);
+ if (!graph_elem) {
+ printf("error: mem alloc\n");
+ return -1;
+ }
+
+ while (1) {
+ ret = fread(hdr, sizeof(struct snd_soc_tplg_hdr), 1, file);
+ if (ret != 1)
+ printf("error: reading header\n");
+
+ switch (hdr->type) {
+ case SND_SOC_TPLG_TYPE_DAPM_GRAPH:
+ size = sizeof(struct snd_soc_tplg_dapm_graph_elem);
+ /* parse pipeline graph */
+ for (i = 0; i < hdr->count; i++) {
+ ret = fread(graph_elem, size, 1, file);
+ if (ret != 1)
+ printf("error: reading graph elem\n");
+
+ /* write route to output dot file */
+ sprintf(edge, "\"%s\"->\"%s\"\n",
+ graph_elem->source, graph_elem->sink);
+ fwrite(edge, strlen(edge), 1, dotfile);
+ fwrite("\n", 1, 1, dotfile);
+ }
+
+ if (ftell(file) == file_size)
+ goto finish;
+ break;
+
+ default:
+ fseek(file, hdr->payload_size, SEEK_CUR);
+ if (ftell(file) == file_size)
+ goto finish;
+ break;
+ }
+ }
+
+finish:
+ fwrite(end, strlen(end), 1, dotfile);
+ fclose(dotfile);
+ fclose(file);
+ free(hdr);
+ free(graph_elem);
+
+ /* create topology graph */
+ status = system("dot tplg.dot -Tpng -o tplg.png");
+ if (status < 0) {
+ printf("error: creating tplg graph\n");
+ exit(EXIT_FAILURE);
+ }
+}
--
2.14.1
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