LoudnessEnhancer: Add AIDL implementation and its unit test

Added AIDL implementation for LoudnessEnhancer audio effect
parameters and its unit test.

Bug: 258124419
Test: atest VtsHalLoudnessEnhancerTargetTest

Change-Id: I2dfd304ca9f72383572fd1f762d41864dd73e39d
diff --git a/audio/aidl/vts/VtsHalLoudnessEnhancerTargetTest.cpp b/audio/aidl/vts/VtsHalLoudnessEnhancerTargetTest.cpp
new file mode 100644
index 0000000..2ad016d
--- /dev/null
+++ b/audio/aidl/vts/VtsHalLoudnessEnhancerTargetTest.cpp
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+
+#include <aidl/Vintf.h>
+
+#define LOG_TAG "VtsHalLoudnessEnhancerTest"
+
+#include <Utils.h>
+#include "EffectHelper.h"
+
+using namespace android;
+
+using aidl::android::hardware::audio::effect::Capability;
+using aidl::android::hardware::audio::effect::Descriptor;
+using aidl::android::hardware::audio::effect::IEffect;
+using aidl::android::hardware::audio::effect::IFactory;
+using aidl::android::hardware::audio::effect::LoudnessEnhancer;
+using aidl::android::hardware::audio::effect::LoudnessEnhancerTypeUUID;
+using aidl::android::hardware::audio::effect::Parameter;
+
+/**
+ * Here we focus on specific parameter checking, general IEffect interfaces testing performed in
+ * VtsAudioEffectTargetTest.
+ */
+enum ParamName { PARAM_INSTANCE_NAME, PARAM_GAIN_MB };
+using LoudnessEnhancerParamTestParam = std::tuple<std::string, int>;
+
+// Every int 32 bit value is a valid gain, so testing the corner cases and one regular value.
+// TODO : Update the test values once range/capability is updated by implementation.
+const std::vector<int> kGainMbValues = {std::numeric_limits<int>::min(), 100,
+                                        std::numeric_limits<int>::max()};
+
+class LoudnessEnhancerParamTest : public ::testing::TestWithParam<LoudnessEnhancerParamTestParam>,
+                                  public EffectHelper {
+  public:
+    LoudnessEnhancerParamTest()
+        : EffectHelper(std::get<PARAM_INSTANCE_NAME>(GetParam())),
+          mParamGainMb(std::get<PARAM_GAIN_MB>(GetParam())) {}
+
+    void SetUp() override {
+        CreateEffectsWithUUID(LoudnessEnhancerTypeUUID);
+        initParamCommonFormat();
+        initParamCommon();
+        initParamSpecific();
+        OpenEffects(LoudnessEnhancerTypeUUID);
+        SCOPED_TRACE(testing::Message() << "gainMb: " << mParamGainMb);
+    }
+
+    void TearDown() override {
+        CloseEffects();
+        DestroyEffects();
+        CleanUp();
+    }
+
+    int mParamGainMb = 0;
+
+    void SetAndGetLoudnessEnhancerParameters() {
+        auto functor = [&](const std::shared_ptr<IEffect>& effect) {
+            for (auto& it : mTags) {
+                auto& tag = it.first;
+                auto& le = it.second;
+
+                // set parameter
+                Parameter expectParam;
+                Parameter::Specific specific;
+                specific.set<Parameter::Specific::loudnessEnhancer>(le);
+                expectParam.set<Parameter::specific>(specific);
+                // All values are valid, set parameter should succeed
+                EXPECT_STATUS(EX_NONE, effect->setParameter(expectParam)) << expectParam.toString();
+
+                // get parameter
+                Parameter getParam;
+                Parameter::Id id;
+                LoudnessEnhancer::Id leId;
+                leId.set<LoudnessEnhancer::Id::commonTag>(tag);
+                id.set<Parameter::Id::loudnessEnhancerTag>(leId);
+                EXPECT_STATUS(EX_NONE, effect->getParameter(id, &getParam));
+
+                EXPECT_EQ(expectParam, getParam);
+            }
+        };
+        EXPECT_NO_FATAL_FAILURE(ForEachEffect(functor));
+    }
+
+    void addGainMbParam(int gainMb) {
+        LoudnessEnhancer le;
+        le.set<LoudnessEnhancer::gainMb>(gainMb);
+        mTags.push_back({LoudnessEnhancer::gainMb, le});
+    }
+
+  private:
+    std::vector<std::pair<LoudnessEnhancer::Tag, LoudnessEnhancer>> mTags;
+
+    void initParamSpecific() {
+        LoudnessEnhancer le;
+        le.set<LoudnessEnhancer::gainMb>(0);
+        Parameter::Specific specific;
+        specific.set<Parameter::Specific::loudnessEnhancer>(le);
+        setSpecific(specific);
+    }
+
+    void CleanUp() { mTags.clear(); }
+};
+
+TEST_P(LoudnessEnhancerParamTest, SetAndGetGainMb) {
+    EXPECT_NO_FATAL_FAILURE(addGainMbParam(mParamGainMb));
+    SetAndGetLoudnessEnhancerParameters();
+}
+
+INSTANTIATE_TEST_SUITE_P(
+        LoudnessEnhancerTest, LoudnessEnhancerParamTest,
+        ::testing::Combine(
+                testing::ValuesIn(android::getAidlHalInstanceNames(IFactory::descriptor)),
+                testing::ValuesIn(kGainMbValues)),
+        [](const testing::TestParamInfo<LoudnessEnhancerParamTest::ParamType>& info) {
+            std::string instance = std::get<PARAM_INSTANCE_NAME>(info.param);
+            std::string gainMb = std::to_string(std::get<PARAM_GAIN_MB>(info.param));
+
+            std::string name = instance + "_gainMb" + gainMb;
+            std::replace_if(
+                    name.begin(), name.end(), [](const char c) { return !std::isalnum(c); }, '_');
+            return name;
+        });
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(LoudnessEnhancerParamTest);
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ABinderProcess_setThreadPoolMaxThreadCount(1);
+    ABinderProcess_startThreadPool();
+    return RUN_ALL_TESTS();
+}