tplg_parser: Add support for parsing PCM headers

Parse the PCM headers and save the PCM info along with the host
component associated with the PCM.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>

Author: ranj063

tools/tplg_parser/CMakeLists.txt

@@ -21,6 +21,7 @@ target_sources(sof_tplg_parser PUBLIC
 tokens.c
 process.c
 control.c
+pcm.c
 pga.c
 mixer.c
 pipeline.c

tools/tplg_parser/include/tplg_parser/topology.h

@@ -79,6 +79,7 @@ struct sof_ipc4_available_audio_format {
 
 structtplg_comp_info {
 char*name;
+char*stream_name;
 intid;
 inttype;
 intpipeline_id;
@@ -93,6 +94,14 @@ struct tplg_route_info {
 structlist_itemitem; /* item in a list */
 };
 
+structtplg_pcm_info {
+char*name;
+intid;
+structtplg_comp_info*playback_host;
+structtplg_comp_info*capture_host;
+structlist_itemitem; /* item in a list */
+};
+
 /*
  * Per topology data.
  *
@@ -164,6 +173,11 @@ struct tplg_context {
 	w = (struct snd_soc_tplg_dapm_graph_elem *)(ctx->tplg_base + ctx->tplg_offset); \
 	ctx->tplg_offset += sizeof(*w); w; })
 
+#definetplg_get_pcm(ctx) \
+	({struct snd_soc_tplg_pcm *pcm; \
+	pcm = (struct snd_soc_tplg_pcm *)(ctx->tplg_base + ctx->tplg_offset); \
+	ctx->tplg_offset += sizeof(*pcm) + pcm->priv.size; pcm; })
+
 staticinlineinttplg_valid_widget(structsnd_soc_tplg_dapm_widget*widget)
 {
 if (widget->size==sizeof(structsnd_soc_tplg_dapm_widget))
@@ -261,4 +275,7 @@ int sof_parse_token_sets(void *object, const struct sof_topology_token *tokens,
 inttplg_parse_widget_audio_formats(structtplg_context*ctx);
 inttplg_parse_graph(structtplg_context*ctx, structlist_item*widget_list,
 structlist_item*route_list);
+inttplg_parse_pcm(structtplg_context*ctx, structlist_item*widget_list,
+structlist_item*pcm_list);
+
 #endif

tools/tplg_parser/pcm.c

@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: BSD-3-Clause
+//
+// Copyright(c) 2023 Intel Corporation. All rights reserved.
+//
+// Author: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
+
+/* FE DAI or PCM parser */
+
+#include<stdio.h>
+#include<stdlib.h>
+#include<stdint.h>
+#include<stddef.h>
+#include<errno.h>
+#include<string.h>
+#include<ipc/topology.h>
+#include<sof/list.h>
+#include<sof/ipc/topology.h>
+#include<kernel/header.h>
+#include<tplg_parser/topology.h>
+
+/* parse and save the PCM information */
+inttplg_parse_pcm(structtplg_context*ctx, structlist_item*widget_list,
+structlist_item*pcm_list)
+{
+structtplg_pcm_info*pcm_info;
+structsnd_soc_tplg_pcm*pcm;
+structlist_item*item;
+
+pcm_info=calloc(sizeof(structtplg_pcm_info), 1);
+if (!pcm_info)
+return-ENOMEM;
+
+pcm=tplg_get_pcm(ctx);
+
+pcm_info->name=strdup(pcm->pcm_name);
+if (!pcm_info->name) {
+free(pcm_info);
+return-ENOMEM;
+	}
+
+pcm_info->id=pcm->pcm_id;
+
+/* look up from the widget list and populate the PCM info */
+list_for_item(item, widget_list) {
+structtplg_comp_info*comp_info=container_of(item, structtplg_comp_info, item);
+
+if (!strcmp(pcm->caps[0].name, comp_info->stream_name) &&
+ (comp_info->type==SND_SOC_TPLG_DAPM_AIF_IN||
+comp_info->type==SND_SOC_TPLG_DAPM_AIF_OUT)) {
+pcm_info->playback_host=comp_info;
+fprintf(stdout, "PCM: '%s' ID: %d Host name: %s\n", pcm_info->name,
+pcm_info->id, comp_info->name);
+ }
+if (!strcmp(pcm->caps[1].name, comp_info->stream_name) &&
+ (comp_info->type==SND_SOC_TPLG_DAPM_AIF_IN||
+comp_info->type==SND_SOC_TPLG_DAPM_AIF_OUT)) {
+pcm_info->capture_host=comp_info;
+fprintf(stdout, "PCM: '%s' ID: %d Host name: %s\n", pcm_info->name,
+pcm_info->id, comp_info->name);
+ }
+	}
+
+list_item_append(&pcm_info->item, pcm_list);
+
+return0;
+}