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/*
* Copyright (C) 2016 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"
#include <android/log.h>
#include "Light.h"
namespace android {
namespace hardware {
namespace light {
namespace V2_0 {
namespace implementation {
static_assert(LIGHT_FLASH_NONE == static_cast<int>(Flash::NONE),
"Flash::NONE must match legacy value.");
static_assert(LIGHT_FLASH_TIMED == static_cast<int>(Flash::TIMED),
"Flash::TIMED must match legacy value.");
static_assert(LIGHT_FLASH_HARDWARE == static_cast<int>(Flash::HARDWARE),
"Flash::HARDWARE must match legacy value.");
static_assert(BRIGHTNESS_MODE_USER == static_cast<int>(Brightness::USER),
"Brightness::USER must match legacy value.");
static_assert(BRIGHTNESS_MODE_SENSOR == static_cast<int>(Brightness::SENSOR),
"Brightness::SENSOR must match legacy value.");
static_assert(BRIGHTNESS_MODE_LOW_PERSISTENCE ==
static_cast<int>(Brightness::LOW_PERSISTENCE),
"Brightness::LOW_PERSISTENCE must match legacy value.");
Light::Light(std::map<Type, light_device_t*> &&lights)
: mLights(std::move(lights)) {}
// 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;
}
light_device_t* hwLight = it->second;
light_state_t legacyState {
.color = state.color,
.flashMode = static_cast<int>(state.flashMode),
.flashOnMS = state.flashOnMs,
.flashOffMS = state.flashOffMs,
.brightnessMode = static_cast<int>(state.brightnessMode),
};
int ret = hwLight->set_light(hwLight, &legacyState);
switch (ret) {
case -ENOSYS:
return Status::BRIGHTNESS_NOT_SUPPORTED;
case 0:
return Status::SUCCESS;
default:
return Status::UNKNOWN;
}
}
Return<void> Light::getSupportedTypes(getSupportedTypes_cb _hidl_cb) {
Type *types = new Type[mLights.size()];
int idx = 0;
for(auto const &pair : mLights) {
Type type = pair.first;
types[idx++] = type;
}
{
hidl_vec<Type> hidl_types{};
hidl_types.setToExternal(types, mLights.size());
_hidl_cb(hidl_types);
}
delete[] types;
return Void();
}
const static std::map<Type, const char*> kLogicalLights = {
{Type::BACKLIGHT, LIGHT_ID_BACKLIGHT},
{Type::KEYBOARD, LIGHT_ID_KEYBOARD},
{Type::BUTTONS, LIGHT_ID_BUTTONS},
{Type::BATTERY, LIGHT_ID_BATTERY},
{Type::NOTIFICATIONS, LIGHT_ID_NOTIFICATIONS},
{Type::ATTENTION, LIGHT_ID_ATTENTION},
{Type::BLUETOOTH, LIGHT_ID_BLUETOOTH},
{Type::WIFI, LIGHT_ID_WIFI}
};
light_device_t* getLightDevice(const char* name) {
light_device_t* lightDevice;
const hw_module_t* hwModule = NULL;
int ret = hw_get_module (LIGHTS_HARDWARE_MODULE_ID, &hwModule);
if (ret == 0) {
ret = hwModule->methods->open(hwModule, name,
reinterpret_cast<hw_device_t**>(&lightDevice));
if (ret != 0) {
ALOGE("light_open %s %s failed: %d", LIGHTS_HARDWARE_MODULE_ID, name, ret);
}
} else {
ALOGE("hw_get_module %s %s failed: %d", LIGHTS_HARDWARE_MODULE_ID, name, ret);
}
if (ret == 0) {
return lightDevice;
} else {
ALOGE("Light passthrough failed to load legacy HAL.");
return nullptr;
}
}
ILight* HIDL_FETCH_ILight(const char* /* name */) {
std::map<Type, light_device_t*> lights;
for(auto const &pair : kLogicalLights) {
Type type = pair.first;
const char* name = pair.second;
light_device_t* light = getLightDevice(name);
if (light != nullptr) {
lights[type] = light;
}
}
if (lights.size() == 0) {
// Log information, but still return new Light.
// Some devices may not have any lights.
ALOGI("Could not open any lights.");
}
return new Light(std::move(lights));
}
} // namespace implementation
} // namespace V2_0
} // namespace light
} // namespace hardware
} // namespace android
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