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/*
* Copyright 2018 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 "Light"
#include "Light.h"
#include <android-base/logging.h>
namespace {
using android::hardware::light::V2_0::LightState;
static uint32_t rgbToBrightness(const LightState& state) {
uint32_t color = state.color & 0x00ffffff;
return ((77 * ((color >> 16) & 0xff)) + (150 * ((color >> 8) & 0xff)) +
(29 * (color & 0xff))) >> 8;
}
static bool isLit(const LightState& state) {
return (state.color & 0x00ffffff);
}
} // anonymous namespace
namespace android {
namespace hardware {
namespace light {
namespace V2_0 {
namespace implementation {
Light::Light(std::ofstream&& backlight, std::ofstream&& led)
: mBacklight(std::move(backlight)), mLed(std::move(led)) {
auto backlightFn(std::bind(&Light::setBacklight, this, std::placeholders::_1));
auto notifFn(std::bind(&Light::setNotificationLight, this, std::placeholders::_1));
mLights.emplace(std::make_pair(Type::BACKLIGHT, backlightFn));
mLights.emplace(std::make_pair(Type::NOTIFICATIONS, notifFn));
}
// Methods from ::android::hardware::light::V2_0::ILight follow.
Return<Status> Light::setLight(Type type, const LightState& state) {
auto it = mLights.find(type);
if (it == mLights.end()) {
return Status::LIGHT_NOT_SUPPORTED;
}
it->second(state);
return Status::SUCCESS;
}
Return<void> Light::getSupportedTypes(getSupportedTypes_cb _hidl_cb) {
std::vector<Type> types;
for (auto const& light : mLights) {
types.push_back(light.first);
}
_hidl_cb(types);
return Void();
}
void Light::setBacklight(const LightState& state) {
std::lock_guard<std::mutex> lock(mLock);
uint32_t brightness = rgbToBrightness(state);
mBacklight << brightness << std::endl;
}
void Light::setNotificationLight(const LightState& state) {
std::lock_guard<std::mutex> lock(mLock);
uint32_t color = state.color & 0x00ffffff;
if (isLit(state)) {
mLed << color << std::endl;
} else {
mLed << 0 << std::endl;
}
}
} // namespace implementation
} // namespace V2_0
} // namespace light
} // namespace hardware
} // namespace android
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