hal: add support to override volume gain to step mapping table
- if customer mapping is added in platform info file, use that
- in absence of customer table use default mapping
BUG 28897755
Change-Id: I4bf8bcf1913f16ad6298ff1f3fa5dd649c889b2a
diff --git a/hal/platform_info.c b/hal/platform_info.c
index 7432230..f6b57e3 100644
--- a/hal/platform_info.c
+++ b/hal/platform_info.c
@@ -24,6 +24,7 @@
#include <audio_hw.h>
#include "platform_api.h"
#include <platform.h>
+#include <math.h>
typedef enum {
ROOT,
@@ -32,6 +33,7 @@
BACKEND_NAME,
CONFIG_PARAMS,
OPERATOR_SPECIFIC,
+ GAIN_LEVEL_MAPPING,
} section_t;
typedef void (* section_process_fn)(const XML_Char **attr);
@@ -42,6 +44,7 @@
static void process_config_params(const XML_Char **attr);
static void process_root(const XML_Char **attr);
static void process_operator_specific(const XML_Char **attr);
+static void process_gain_db_to_level_map(const XML_Char **attr);
static section_process_fn section_table[] = {
[ROOT] = process_root,
@@ -50,6 +53,7 @@
[BACKEND_NAME] = process_backend_name,
[CONFIG_PARAMS] = process_config_params,
[OPERATOR_SPECIFIC] = process_operator_specific,
+ [GAIN_LEVEL_MAPPING] = process_gain_db_to_level_map,
};
static section_t section;
@@ -191,6 +195,29 @@
return;
}
+static void process_gain_db_to_level_map(const XML_Char **attr)
+{
+ struct amp_db_and_gain_table tbl_entry;
+
+ if ((strcmp(attr[0], "db") != 0) ||
+ (strcmp(attr[2], "level") != 0)) {
+ ALOGE("%s: invalid attribute passed %s %sexpected amp db level",
+ __func__, attr[0], attr[2]);
+ goto done;
+ }
+
+ tbl_entry.db = atof(attr[1]);
+ tbl_entry.amp = exp(tbl_entry.db * 0.115129f);
+ tbl_entry.level = atoi(attr[3]);
+
+ ALOGV("%s: amp [%f] db [%f] level [%d]", __func__,
+ tbl_entry.amp, tbl_entry.db, tbl_entry.level);
+ platform_add_gain_level_mapping(&tbl_entry);
+
+done:
+ return;
+}
+
static void process_acdb_id(const XML_Char **attr)
{
int index;
@@ -297,6 +324,8 @@
section = CONFIG_PARAMS;
} else if (strcmp(tag_name, "operator_specific") == 0) {
section = OPERATOR_SPECIFIC;
+ } else if (strcmp(tag_name, "gain_db_to_level_mapping") == 0) {
+ section = GAIN_LEVEL_MAPPING;
} else if (strcmp(tag_name, "device") == 0) {
if ((section != ACDB) && (section != BACKEND_NAME) && (section != OPERATOR_SPECIFIC)) {
ALOGE("device tag only supported for acdb/backend names");
@@ -322,6 +351,14 @@
section_process_fn fn = section_table[section];
fn(attr);
+ } else if (strcmp(tag_name, "gain_level_map") == 0) {
+ if (section != GAIN_LEVEL_MAPPING) {
+ ALOGE("usecase tag only supported with GAIN_LEVEL_MAPPING section");
+ return;
+ }
+
+ section_process_fn fn = section_table[GAIN_LEVEL_MAPPING];
+ fn(attr);
}
return;
@@ -339,6 +376,8 @@
section = ROOT;
} else if (strcmp(tag_name, "operator_specific") == 0) {
section = ROOT;
+ } else if (strcmp(tag_name, "gain_db_to_level_mapping") == 0) {
+ section = ROOT;
}
}