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

[Ranjani Sridharan]

On Thu, 2018-05-03 at 16:51 -0500, Pierre-Louis Bossart wrote:
> 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 at 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?

Sorry, copied it from rmbox. Should I change it to FreeBSD?


> > + */
> > +
> > +#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");
> > +}
> > 
> 
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