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/*
* Copyright (C) 2017 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 <log/log.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 {
static constexpr uint32_t MODE_ON = 0x1;
static constexpr uint32_t MODE_BLINK = 0x2;
static constexpr uint32_t MODE_SHIFT = 24;
static constexpr uint32_t MODE_MASK = 0x0f000000;
Light::Light(std::ofstream&& backlight, std::ofstream&& capacitive, std::ofstream&& indicator) :
mBacklight(std::move(backlight)),
mCapacitive(std::move(capacitive)),
mIndicator(std::move(indicator)) {
auto attnFn(std::bind(&Light::setAttentionLight, this, std::placeholders::_1));
auto backlightFn(std::bind(&Light::setBacklight, this, std::placeholders::_1));
auto batteryFn(std::bind(&Light::setBatteryLight, this, std::placeholders::_1));
auto capacitiveFn(std::bind(&Light::setCapacitiveLight, this, std::placeholders::_1));
auto notifFn(std::bind(&Light::setNotificationLight, this, std::placeholders::_1));
mLights.emplace(std::make_pair(Type::ATTENTION, attnFn));
mLights.emplace(std::make_pair(Type::BACKLIGHT, backlightFn));
mLights.emplace(std::make_pair(Type::BATTERY, batteryFn));
mLights.emplace(std::make_pair(Type::BUTTONS, capacitiveFn));
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::setAttentionLight(const LightState& state) {
std::lock_guard<std::mutex> lock(mLock);
mAttentionState = state;
setSpeakerBatteryLightLocked();
}
void Light::setBacklight(const LightState& state) {
std::lock_guard<std::mutex> lock(mLock);
uint32_t brightness = rgbToBrightness(state);
mBacklight << brightness << std::endl;
}
void Light::setBatteryLight(const LightState& state) {
std::lock_guard<std::mutex> lock(mLock);
mBatteryState = state;
setSpeakerBatteryLightLocked();
}
void Light::setCapacitiveLight(const LightState& state) {
std::lock_guard<std::mutex> lock(mLock);
uint32_t brightness = rgbToBrightness(state);
mCapacitive << brightness << std::endl;
}
void Light::setNotificationLight(const LightState& state) {
std::lock_guard<std::mutex> lock(mLock);
mNotificationState = state;
setSpeakerBatteryLightLocked();
}
void Light::setSpeakerBatteryLightLocked() {
if (isLit(mNotificationState)) {
setSpeakerLightLocked(mNotificationState);
} else if (isLit(mAttentionState)) {
setSpeakerLightLocked(mAttentionState);
} else if (isLit(mBatteryState)) {
setSpeakerLightLocked(mBatteryState);
} else {
/* Lights off */
mIndicator << 0 << std::endl;
}
}
void Light::setSpeakerLightLocked(const LightState& state) {
uint32_t color;
uint32_t indicator = 0x00000000;
color = state.color & 0x00ffffff;
/* Set color */
if ((color & 0x00ff0000) && (color & 0x0000ff00)) {
/* amber */
indicator |= 0x00ffff00;
} else if (color & 0x00ff0000) {
/* red */
indicator |= 0x00ff0000;
} else if (color & 0x0000ff00) {
/* green */
indicator |= 0x0000ff00;
} else if (color & 0x000000ff) {
/* LED not capable of blue, use green */
indicator |= 0x0000ff00;
}
/* Set blink */
if (isLit(state) && state.flashMode == Flash::TIMED) {
indicator |= (MODE_BLINK << MODE_SHIFT);
} else if (isLit(state) && state.flashMode == Flash::NONE) {
indicator |= (MODE_ON << MODE_SHIFT);
} else if (!isLit(state)) {
indicator &= (~MODE_MASK);
}
mIndicator << std::hex << indicator << std::endl;
}
} // namespace implementation
} // namespace V2_0
} // namespace light
} // namespace hardware
} // namespace android
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