tplg_parser: Add support for parsing and saving route

ranj063 · kv2019i · commit 34518568f72f · 2023-08-16T21:28:17.000+03:00
Add an option to parse and save the routes from topology so that the
IPCs can be sent at a later time.

Signed-off-by: Ranjani Sridharan &lt;ranjani.sridharan@linux.intel.com&gt;
diff --git a/tools/tplg_parser/graph.c b/tools/tplg_parser/graph.c
@@ -14,6 +14,7 @@
 #include <string.h>
 #include <ipc/topology.h>
 #include <sof/lib/uuid.h>
+#include <sof/list.h>
 #include <sof/ipc/topology.h>
 #include <kernel/header.h>
 #include <tplg_parser/topology.h>
@@ -73,3 +74,42 @@ int tplg_create_graph(struct tplg_context *ctx, int count, int pipeline_id,
 
 	return 0;
 }
+
+/* parse and save the route information for IPC4 */
+int tplg_parse_graph(struct tplg_context *ctx, struct list_item *widget_list,
+		     struct list_item *route_list)
+{
+	struct snd_soc_tplg_dapm_graph_elem *graph_elem;
+	struct tplg_route_info *route;
+	struct list_item *item;
+
+	route = calloc(sizeof(struct tplg_route_info), 1);
+	if (!route)
+		return -ENOMEM;
+
+	graph_elem = tplg_get_graph(ctx);
+
+	/* look up from the widget list and populate the route info */
+	list_for_item(item, widget_list) {
+		struct tplg_comp_info *comp_info = container_of(item, struct tplg_comp_info, item);
+
+		if (!strcmp(comp_info->name, graph_elem->source))
+			route->source = comp_info;
+
+		if (!strcmp(comp_info->name, graph_elem->sink))
+			route->sink = comp_info;
+	}
+
+	if (!route->source || !route->sink) {
+		fprintf(stderr, "%s() error loading route: source=%s, sink=%s\n",
+			__func__, graph_elem->source, graph_elem->sink);
+		free(route);
+		return -EINVAL;
+	}
+
+	list_item_append(&route->item, route_list);
+
+	printf("loading route %s -> %s\n", route->source->name, route->sink->name);
+
+	return 0;
+}
diff --git a/tools/tplg_parser/include/tplg_parser/topology.h b/tools/tplg_parser/include/tplg_parser/topology.h
@@ -87,6 +87,12 @@ struct tplg_comp_info {
 	struct sof_ipc4_available_audio_format available_fmt; /* available formats in tplg */
 };
 
+struct tplg_route_info {
+	struct tplg_comp_info *source;
+	struct tplg_comp_info *sink;
+	struct list_item item; /* item in a list */
+};
+
 /*
  * Per topology data.
  *
@@ -253,4 +259,6 @@ int sof_parse_token_sets(void *object, const struct sof_topology_token *tokens,
 			 int count, struct snd_soc_tplg_vendor_array *array,
 			 int priv_size, int num_sets, int object_size);
 int tplg_parse_widget_audio_formats(struct tplg_context *ctx);
+int tplg_parse_graph(struct tplg_context *ctx, struct list_item *widget_list,
+		     struct list_item *route_list);
 #endif
