audio: Centralize audio configuration paths specification

The list of possible paths for the audio configuration
files is now retrieved using audio_get_configuration_paths()
function. All duplicated lists of known configuration
directories have been removed.

Bug: 153680356
Test: test audio on built image working
      atest VtsHalAudioV6_0TargetTest VtsHalAudioPolicyV6_0TargetTest
Change-Id: I5340e2200f2ab45fcd80a2144c0e04e099da9276
Merged-In: I5340e2200f2ab45fcd80a2144c0e04e099da9276

1 files changed, 49 insertions, 0 deletions

diff --git a/audio/include/system/audio_config.h b/audio/include/system/audio_config.h
new file mode 100644
index 00000000..5cb3ff52
--- /dev/null
+++ b/audio/include/system/audio_config.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_AUDIO_CONFIG_H
+#define ANDROID_AUDIO_CONFIG_H
+
+#ifdef __cplusplus
+
+#include <string>
+#include <vector>
+
+#include <cutils/properties.h>
+
+namespace android {
+
+// Returns a vector of paths where audio configuration files
+// must be searched, in the provided order.
+static inline std::vector<std::string> audio_get_configuration_paths() {
+    static const std::vector<std::string> paths = []() {
+        char value[PROPERTY_VALUE_MAX] = {};
+        if (property_get("ro.boot.product.vendor.sku", value, "") <= 0) {
+            return std::vector<std::string>({"/odm/etc", "/vendor/etc", "/system/etc"});
+        } else {
+            return std::vector<std::string>({
+                    "/odm/etc", std::string("/vendor/etc/audio/sku_") + value,
+                    "/vendor/etc", "/system/etc"});
+        }
+    }();
+    return paths;
+}
+
+}  // namespace android
+
+#endif  // __cplusplus
+
+#endif  // ANDROID_AUDIO_CONFIG_H