samsung: light: convert to AIDL implementation

Change-Id: Id3860ca6e84ea77766322cbd43239e9cebecbc73

aidl/light/Android.bp

@@ -0,0 +1,23 @@
+//
+// Copyright (C) 2021 The LineageOS Project
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+cc_binary {
+    name: "android.hardware.light-service.samsung",
+    relative_install_path: "hw",
+    init_rc: ["android.hardware.light-service.samsung.rc"],
+    vintf_fragments: ["android.hardware.light-service.samsung.xml"],
+    local_include_dirs: ["include"],
+    srcs: [
+        "Lights.cpp",
+        "service.cpp",
+    ],
+    shared_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "android.hardware.light-V1-ndk_platform",
+    ],
+    vendor: true,
+}

aidl/light/Lights.cpp

@@ -1,37 +1,23 @@
 /*
- * Copyright (C) 2019 The LineageOS Project
+ * Copyright (C) 2021 The LineageOS Project
  *
- * Licensed under the Apache License, Version 2.0 (the "License");
+ * SPDX-License-Identifier: Apache-2.0
- * 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 "android.hardware.light@2.0-service.samsung"
+
+#define LOG_TAG "android.hardware.lights-service.samsung"
 
 #include <android-base/stringprintf.h>
-#include <iomanip>
+#include <fstream>
 
-#include "Light.h"
+#include "Lights.h"
 
 #define COLOR_MASK 0x00ffffff
 #define MAX_INPUT_BRIGHTNESS 255
 
-using android::hardware::light::V2_0::LightState;
+namespace aidl {
-using android::hardware::light::V2_0::Status;
-using android::hardware::light::V2_0::Type;
-
 namespace android {
 namespace hardware {
 namespace light {
-namespace V2_0 {
-namespace implementation {
 
 /*
  * Write value to path and close file.
@@ -51,26 +37,27 @@ static T get(const std::string& path, const T& def) {
     return file.fail() ? def : result;
 }
 
-Light::Light() {
+Lights::Lights() {
-    mLights.emplace(Type::BACKLIGHT,
+    mLights.emplace(LightType::BACKLIGHT,
-                    std::bind(&Light::handleBacklight, this, std::placeholders::_1));
+                    std::bind(&Lights::handleBacklight, this, std::placeholders::_1));
 #ifdef BUTTON_BRIGHTNESS_NODE
-    mLights.emplace(Type::BUTTONS, std::bind(&Light::handleButtons, this, std::placeholders::_1));
+    mLights.emplace(LightType::BUTTONS, std::bind(&Lights::handleButtons, this, std::placeholders::_1));
 #endif /* BUTTON_BRIGHTNESS_NODE */
 #ifdef LED_BLINK_NODE
-    mLights.emplace(Type::BATTERY, std::bind(&Light::handleBattery, this, std::placeholders::_1));
+    mLights.emplace(LightType::BATTERY, std::bind(&Lights::handleBattery, this, std::placeholders::_1));
-    mLights.emplace(Type::NOTIFICATIONS,
+    mLights.emplace(LightType::NOTIFICATIONS,
-                    std::bind(&Light::handleNotifications, this, std::placeholders::_1));
+                    std::bind(&Lights::handleNotifications, this, std::placeholders::_1));
-    mLights.emplace(Type::ATTENTION,
+    mLights.emplace(LightType::ATTENTION,
-                    std::bind(&Light::handleAttention, this, std::placeholders::_1));
+                    std::bind(&Lights::handleAttention, this, std::placeholders::_1));
 #endif /* LED_BLINK_NODE */
 }
 
-Return<Status> Light::setLight(Type type, const LightState& state) {
+ndk::ScopedAStatus Lights::setLightState(int32_t id, const HwLightState& state) {
+    LightType type = static_cast<LightType>(id);
     auto it = mLights.find(type);
 
     if (it == mLights.end()) {
-        return Status::LIGHT_NOT_SUPPORTED;
+        return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
     }
 
     /*
@@ -80,10 +67,10 @@ Return<Status> Light::setLight(Type type, const LightState& state) {
 
     it->second(state);
 
-    return Status::SUCCESS;
+    return ndk::ScopedAStatus::ok();
 }
 
-void Light::handleBacklight(const LightState& state) {
+void Lights::handleBacklight(const HwLightState& state) {
     uint32_t max_brightness = get(PANEL_MAX_BRIGHTNESS_NODE, MAX_INPUT_BRIGHTNESS);
     uint32_t brightness = rgbToBrightness(state);
 
@@ -95,7 +82,7 @@ void Light::handleBacklight(const LightState& state) {
 }
 
 #ifdef BUTTON_BRIGHTNESS_NODE
-void Light::handleButtons(const LightState& state) {
+void Lights::handleButtons(const HwLightState& state) {
 #ifdef VAR_BUTTON_BRIGHTNESS
     uint32_t brightness = rgbToBrightness(state);
 #else
@@ -107,24 +94,24 @@ void Light::handleButtons(const LightState& state) {
 #endif
 
 #ifdef LED_BLINK_NODE
-void Light::handleBattery(const LightState& state) {
+void Lights::handleBattery(const HwLightState& state) {
     mBatteryState = state;
     setNotificationLED();
 }
 
-void Light::handleNotifications(const LightState& state) {
+void Lights::handleNotifications(const HwLightState& state) {
     mNotificationState = state;
     setNotificationLED();
 }
 
-void Light::handleAttention(const LightState& state) {
+void Lights::handleAttention(const HwLightState& state) {
     mAttentionState = state;
     setNotificationLED();
 }
 
-void Light::setNotificationLED() {
+void Lights::setNotificationLED() {
     int32_t adjusted_brightness = MAX_INPUT_BRIGHTNESS;
-    LightState state;
+    HwLightState state;
 #ifdef LED_BLN_NODE
     bool bln = false;
 #endif /* LED_BLN_NODE */
@@ -138,11 +125,11 @@ void Light::setNotificationLED() {
     } else if (mAttentionState.color & COLOR_MASK) {
         adjusted_brightness = LED_BRIGHTNESS_ATTENTION;
         state = mAttentionState;
-        if (state.flashMode == Flash::HARDWARE) {
+        if (state.flashMode == FlashMode::HARDWARE) {
-            if (state.flashOnMs > 0 && state.flashOffMs == 0) state.flashMode = Flash::NONE;
+            if (state.flashOnMs > 0 && state.flashOffMs == 0) state.flashMode = FlashMode::NONE;
             state.color = 0x000000ff;
         }
-        if (state.flashMode == Flash::NONE) {
+        if (state.flashMode == FlashMode::NONE) {
             state.color = 0;
         }
     } else if (mBatteryState.color & COLOR_MASK) {
@@ -153,13 +140,13 @@ void Light::setNotificationLED() {
         return;
     }
 
-    if (state.flashMode == Flash::NONE) {
+    if (state.flashMode == FlashMode::NONE) {
         state.flashOnMs = 0;
         state.flashOffMs = 0;
     }
 
     state.color = calibrateColor(state.color & COLOR_MASK, adjusted_brightness);
-    set(LED_BLINK_NODE, android::base::StringPrintf("0x%08x %d %d", state.color, state.flashOnMs,
+    set(LED_BLINK_NODE, ::android::base::StringPrintf("0x%08x %d %d", state.color, state.flashOnMs,
                                                     state.flashOffMs));
 
 #ifdef LED_BLN_NODE
@@ -169,7 +156,7 @@ void Light::setNotificationLED() {
 #endif /* LED_BLN_NODE */
 }
 
-uint32_t Light::calibrateColor(uint32_t color, int32_t brightness) {
+uint32_t Lights::calibrateColor(uint32_t color, int32_t brightness) {
     uint32_t red = ((color >> 16) & 0xFF) * LED_ADJUSTMENT_R;
     uint32_t green = ((color >> 8) & 0xFF) * LED_ADJUSTMENT_G;
     uint32_t blue = (color & 0xFF) * LED_ADJUSTMENT_B;
@@ -179,27 +166,24 @@ uint32_t Light::calibrateColor(uint32_t color, int32_t brightness) {
 }
 #endif /* LED_BLINK_NODE */
 
-Return<void> Light::getSupportedTypes(getSupportedTypes_cb _hidl_cb) {
+#define AutoHwLight(light) {.id = (int32_t)light, .type = light, .ordinal = 0}
-    std::vector<Type> types;
 
+ndk::ScopedAStatus Lights::getLights(std::vector<HwLight> *_aidl_return) {
     for (auto const& light : mLights) {
-        types.push_back(light.first);
+        _aidl_return->push_back(AutoHwLight(light.first));
     }
 
-    _hidl_cb(types);
+    return ndk::ScopedAStatus::ok();
-
-    return Void();
 }
 
-uint32_t Light::rgbToBrightness(const LightState& state) {
+uint32_t Lights::rgbToBrightness(const HwLightState& state) {
     uint32_t color = state.color & COLOR_MASK;
 
     return ((77 * ((color >> 16) & 0xff)) + (150 * ((color >> 8) & 0xff)) + (29 * (color & 0xff))) >>
            8;
 }
 
-}  // namespace implementation
-}  // namespace V2_0
 } // namespace light
 } // namespace hardware
 } // namespace android
+} // namespace aidl

aidl/light/Lights.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2021 The LineageOS Project
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/light/BnLights.h>
+#include <unordered_map>
+#include "samsung_lights.h"
+
+using ::aidl::android::hardware::light::HwLightState;
+using ::aidl::android::hardware::light::HwLight;
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace light {
+
+class Lights : public BnLights {
+public:
+    Lights();
+
+    ndk::ScopedAStatus setLightState(int32_t id, const HwLightState& state) override;
+    ndk::ScopedAStatus getLights(std::vector<HwLight> *_aidl_return) override;
+
+private:
+    void handleBacklight(const HwLightState& state);
+#ifdef BUTTON_BRIGHTNESS_NODE
+    void handleButtons(const HwLightState& state);
+#endif /* BUTTON_BRIGHTNESS_NODE */
+#ifdef LED_BLINK_NODE
+    void handleBattery(const HwLightState& state);
+    void handleNotifications(const HwLightState& state);
+    void handleAttention(const HwLightState& state);
+    void setNotificationLED();
+    uint32_t calibrateColor(uint32_t color, int32_t brightness);
+
+    HwLightState mAttentionState;
+    HwLightState mBatteryState;
+    HwLightState mNotificationState;
+#endif /* LED_BLINK_NODE */
+
+    uint32_t rgbToBrightness(const HwLightState& state);
+
+    std::mutex mLock;
+    std::unordered_map<LightType, std::function<void(const HwLightState&)>> mLights;
+};
+
+} // namespace light
+} // namespace hardware
+} // namespace android
+} // namespace aidl

aidl/light/android.hardware.light-service.samsung.rc

@@ -0,0 +1,5 @@
+service vendor.light-default /vendor/bin/hw/android.hardware.light-service.samsung
+    class hal
+    user system
+    group system
+    shutdown critical

aidl/light/android.hardware.light-service.samsung.xml

@@ -0,0 +1,6 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.light</name>
+        <fqname>ILights/default</fqname>
+    </hal>
+</manifest>

aidl/light/service.cpp

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2021 The LineageOS Project
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#define LOG_TAG "android.hardware.light-service.samsung"
+
+#include "Lights.h"
+
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+#include <android-base/logging.h>
+
+using ::aidl::android::hardware::light::Lights;
+
+int main() {
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+    std::shared_ptr<Lights> lights = ndk::SharedRefBase::make<Lights>();
+
+    const std::string instance = std::string() + Lights::descriptor + "/default";
+    binder_status_t status = AServiceManager_addService(lights->asBinder().get(), instance.c_str());
+    CHECK(status == STATUS_OK);
+
+    ABinderProcess_joinThreadPool();
+    return EXIT_FAILURE; // should not reach
+}

hidl/light/Android.mk

@@ -1,41 +0,0 @@
-#
-# Copyright (C) 2019 The LineageOS 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.
-#
-
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := \
-    Light.cpp \
-    service.cpp
-
-LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
-
-LOCAL_SHARED_LIBRARIES := \
-    libbase \
-    libbinder \
-    libhidlbase \
-    libutils \
-    android.hardware.light@2.0
-
-LOCAL_MODULE := android.hardware.light@2.0-service.samsung
-LOCAL_INIT_RC := android.hardware.light@2.0-service.samsung.rc
-LOCAL_MODULE_RELATIVE_PATH := hw
-LOCAL_MODULE_TAGS := optional
-LOCAL_MODULE_OWNER := samsung
-LOCAL_VENDOR_MODULE := true
-
-include $(BUILD_EXECUTABLE)

hidl/light/Light.h

@@ -1,76 +0,0 @@
-/*
- * Copyright (C) 2019 The LineageOS 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_HARDWARE_LIGHT_V2_0_LIGHT_H
-#define ANDROID_HARDWARE_LIGHT_V2_0_LIGHT_H
-
-#include <android/hardware/light/2.0/ILight.h>
-#include <hidl/MQDescriptor.h>
-#include <hidl/Status.h>
-#include <fstream>
-#include <unordered_map>
-#include "samsung_lights.h"
-
-namespace android {
-namespace hardware {
-namespace light {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::sp;
-using ::android::hardware::hidl_array;
-using ::android::hardware::hidl_memory;
-using ::android::hardware::hidl_string;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-
-struct Light : public ILight {
-    Light();
-
-    Return<Status> setLight(Type type, const LightState& state) override;
-    Return<void> getSupportedTypes(getSupportedTypes_cb _hidl_cb) override;
-
-  private:
-    void handleBacklight(const LightState& state);
-#ifdef BUTTON_BRIGHTNESS_NODE
-    void handleButtons(const LightState& state);
-#endif /* BUTTON_BRIGHTNESS_NODE */
-#ifdef LED_BLINK_NODE
-    void handleBattery(const LightState& state);
-    void handleNotifications(const LightState& state);
-    void handleAttention(const LightState& state);
-    void setNotificationLED();
-    uint32_t calibrateColor(uint32_t color, int32_t brightness);
-
-    LightState mAttentionState;
-    LightState mBatteryState;
-    LightState mNotificationState;
-#endif /* LED_BLINK_NODE */
-
-    uint32_t rgbToBrightness(const LightState& state);
-
-    std::mutex mLock;
-    std::unordered_map<Type, std::function<void(const LightState&)>> mLights;
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace light
-}  // namespace hardware
-}  // namespace android
-
-#endif  // ANDROID_HARDWARE_LIGHT_V2_0_LIGHT_H

hidl/light/android.hardware.light@2.0-service.samsung.rc

@@ -1,7 +0,0 @@
-service vendor.light-hal-2-0 /vendor/bin/hw/android.hardware.light@2.0-service.samsung
-    interface android.hardware.light@2.0::ILight default
-    class hal
-    user system
-    group system
-    # shutting off lights while powering-off
-    shutdown critical

hidl/light/service.cpp

@@ -1,54 +0,0 @@
-/*
- * Copyright (C) 2019 The LineageOS 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 "android.hardware.light@2.0-service.samsung"
-
-#include <android-base/logging.h>
-#include <hidl/HidlTransportSupport.h>
-#include <utils/Errors.h>
-
-#include "Light.h"
-
-using android::hardware::configureRpcThreadpool;
-using android::hardware::joinRpcThreadpool;
-
-using android::hardware::light::V2_0::ILight;
-using android::hardware::light::V2_0::implementation::Light;
-
-using android::OK;
-using android::sp;
-using android::status_t;
-
-int main() {
-    sp<ILight> light = new Light();
-
-    configureRpcThreadpool(1, true);
-
-    status_t status = light->registerAsService();
-
-    if (status != OK) {
-        LOG(ERROR) << "Could not register service for Light HAL";
-        goto shutdown;
-    }
-
-    LOG(INFO) << "Light HAL service is Ready.";
-    joinRpcThreadpool();
-
-shutdown:
-    // In normal operation, we don't expect the thread pool to shutdown
-    LOG(ERROR) << "Light HAL failed to join thread pool.";
-    return 1;
-}