Add AIDL Lights HAL to support multiple lights per type
This is a revision of the previous 2.0 HIDL-based light HAL.
It accomplishes 2 goals:
1) Support more than 1 light for a given type. This allows Assistant to
use the HAL on TV platforms that have usually 4 indicator lights.
2) Use AIDL, which is the more modern way of writing HALs.
The previous HAL is in hardware/interfaces/light/2.0 and the new one is
in versioned as aidl, as that supports forward compatibility.
Test: atest VtsHalLightTargetTest
Bug: 142715294, 142230898
Change-Id: I6d8c12b3df88e02f2a0fff8b6aa8543372b510c8
Merged-In: I08d831ca0380d8bb187e43f6d5c214810ff72f50
diff --git a/light/aidl/vts/functional/Android.bp b/light/aidl/vts/functional/Android.bp
new file mode 100644
index 0000000..3dd8cf6
--- /dev/null
+++ b/light/aidl/vts/functional/Android.bp
@@ -0,0 +1,35 @@
+//
+// 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.
+//
+
+cc_test {
+ name: "VtsHalLightTargetTest",
+ defaults: [
+ "VtsHalTargetTestDefaults",
+ "use_libaidlvintf_gtest_helper_static",
+ ],
+ srcs: [
+ "VtsHalLightTargetTest.cpp",
+ ],
+ shared_libs: [
+ "libbinder",
+ ],
+ static_libs: [
+ "android.hardware.light-cpp",
+ ],
+ test_suites: [
+ "vts-core",
+ ],
+}
diff --git a/light/aidl/vts/functional/VtsHalLightTargetTest.cpp b/light/aidl/vts/functional/VtsHalLightTargetTest.cpp
new file mode 100644
index 0000000..3c26278
--- /dev/null
+++ b/light/aidl/vts/functional/VtsHalLightTargetTest.cpp
@@ -0,0 +1,171 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "light_aidl_hal_test"
+
+#include <aidl/Gtest.h>
+#include <aidl/Vintf.h>
+
+#include <android-base/logging.h>
+#include <android/hardware/light/ILights.h>
+#include <binder/IServiceManager.h>
+#include <binder/ProcessState.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+
+#include <unistd.h>
+#include <set>
+
+using android::ProcessState;
+using android::sp;
+using android::String16;
+using android::binder::Status;
+using android::hardware::hidl_vec;
+using android::hardware::Return;
+using android::hardware::Void;
+using android::hardware::light::BrightnessMode;
+using android::hardware::light::FlashMode;
+using android::hardware::light::HwLight;
+using android::hardware::light::HwLightState;
+using android::hardware::light::ILights;
+using android::hardware::light::LightType;
+
+#define ASSERT_OK(ret) ASSERT_TRUE(ret.isOk())
+#define EXPECT_OK(ret) EXPECT_TRUE(ret.isOk())
+
+const std::set<LightType> kAllTypes{android::enum_range<LightType>().begin(),
+ android::enum_range<LightType>().end()};
+
+class LightsAidl : public testing::TestWithParam<std::string> {
+ public:
+ virtual void SetUp() override {
+ lights = android::waitForDeclaredService<ILights>(String16(GetParam().c_str()));
+ ASSERT_NE(lights, nullptr);
+ ASSERT_TRUE(lights->getLights(&supportedLights).isOk());
+ }
+
+ sp<ILights> lights;
+ std::vector<HwLight> supportedLights;
+
+ virtual void TearDown() override {
+ for (const HwLight& light : supportedLights) {
+ HwLightState off;
+ off.color = 0x00000000;
+ off.flashMode = FlashMode::NONE;
+ off.brightnessMode = BrightnessMode::USER;
+ EXPECT_TRUE(lights->setLightState(light.id, off).isOk());
+ }
+
+ // must leave the device in a useable condition
+ for (const HwLight& light : supportedLights) {
+ if (light.type == LightType::BACKLIGHT) {
+ HwLightState backlightOn;
+ backlightOn.color = 0xFFFFFFFF;
+ backlightOn.flashMode = FlashMode::TIMED;
+ backlightOn.brightnessMode = BrightnessMode::USER;
+ EXPECT_TRUE(lights->setLightState(light.id, backlightOn).isOk());
+ }
+ }
+ }
+};
+
+/**
+ * Ensure all reported lights actually work.
+ */
+TEST_P(LightsAidl, TestSupported) {
+ HwLightState whiteFlashing;
+ whiteFlashing.color = 0xFFFFFFFF;
+ whiteFlashing.flashMode = FlashMode::TIMED;
+ whiteFlashing.flashOnMs = 100;
+ whiteFlashing.flashOffMs = 50;
+ whiteFlashing.brightnessMode = BrightnessMode::USER;
+ for (const HwLight& light : supportedLights) {
+ EXPECT_TRUE(lights->setLightState(light.id, whiteFlashing).isOk());
+ }
+}
+
+/**
+ * Ensure all reported lights have one of the supported types.
+ */
+TEST_P(LightsAidl, TestSupportedLightTypes) {
+ for (const HwLight& light : supportedLights) {
+ EXPECT_TRUE(kAllTypes.find(light.type) != kAllTypes.end());
+ }
+}
+
+/**
+ * Ensure all lights have a unique id.
+ */
+TEST_P(LightsAidl, TestUniqueIds) {
+ std::set<int> ids;
+ for (const HwLight& light : supportedLights) {
+ EXPECT_TRUE(ids.find(light.id) == ids.end());
+ ids.insert(light.id);
+ }
+}
+
+/**
+ * Ensure all lights have a unique ordinal for a given type.
+ */
+TEST_P(LightsAidl, TestUniqueOrdinalsForType) {
+ std::map<int, std::set<int>> ordinalsByType;
+ for (const HwLight& light : supportedLights) {
+ auto& ordinals = ordinalsByType[(int)light.type];
+ EXPECT_TRUE(ordinals.find(light.ordinal) == ordinals.end());
+ ordinals.insert(light.ordinal);
+ }
+}
+
+/**
+ * Ensure EX_UNSUPPORTED_OPERATION is returned if LOW_PERSISTENCE is not supported.
+ */
+TEST_P(LightsAidl, TestLowPersistence) {
+ HwLightState lowPersistence;
+ lowPersistence.color = 0xFF123456;
+ lowPersistence.flashMode = FlashMode::TIMED;
+ lowPersistence.flashOnMs = 100;
+ lowPersistence.flashOffMs = 50;
+ lowPersistence.brightnessMode = BrightnessMode::LOW_PERSISTENCE;
+ for (const HwLight& light : supportedLights) {
+ Status status = lights->setLightState(light.id, lowPersistence);
+ EXPECT_TRUE(status.isOk() || Status::EX_UNSUPPORTED_OPERATION == status.exceptionCode());
+ }
+}
+
+/**
+ * Ensure EX_UNSUPPORTED_OPERATION is returns for an invalid light id.
+ */
+TEST_P(LightsAidl, TestInvalidLightIdUnsupported) {
+ int maxId = INT_MIN;
+ for (const HwLight& light : supportedLights) {
+ maxId = std::max(maxId, light.id);
+ }
+
+ Status status = lights->setLightState(maxId + 1, HwLightState());
+ EXPECT_TRUE(status.exceptionCode() == Status::EX_UNSUPPORTED_OPERATION);
+}
+
+INSTANTIATE_TEST_SUITE_P(Lights, LightsAidl,
+ testing::ValuesIn(android::getAidlHalInstanceNames(ILights::descriptor)),
+ android::PrintInstanceNameToString);
+
+int main(int argc, char** argv) {
+ ::testing::InitGoogleTest(&argc, argv);
+ ProcessState::self()->setThreadPoolMaxThreadCount(1);
+ ProcessState::self()->startThreadPool();
+ return RUN_ALL_TESTS();
+}