Re: [Sound-open-firmware] [PATCH] topology: utility for visualizing topology

On 5/3/18 4:44 PM, Ranjani Sridharan wrote:

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@linux.intel.com

topology/Makefile.am | 5 ++ topology/parse_topology.c | 130 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 135 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..b54ca77 --- /dev/null +++ b/topology/parse_topology.c @@ -0,0 +1,130 @@ +/*

• • Utility for visualizing topology files.
• • Copyright (c) 2015, Intel Corporation.
• • This program is free software; you can redistribute it and/or modify it
• • under the terms and conditions of the GNU General Public License,
• • version 2, as published by the Free Software Foundation.
• • This program is distributed in the hope it will be useful, but WITHOUT
• • ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
• • FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
• • more details.

why is the copyright from 2015 and the license GPL? Is this coming from some other project?

• */

+#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");

+}