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/*
* Copyright (C) 2017 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 "android.hardware.vibrator@1.2-service.crosshatch"
#include <android/hardware/vibrator/1.2/IVibrator.h>
#include <hidl/HidlSupport.h>
#include <hidl/HidlTransportSupport.h>
#include <utils/Errors.h>
#include <utils/StrongPointer.h>
#include "Vibrator.h"
using android::hardware::configureRpcThreadpool;
using android::hardware::joinRpcThreadpool;
using android::hardware::vibrator::V1_2::IVibrator;
using android::hardware::vibrator::V1_2::implementation::Vibrator;
using namespace android;
static constexpr char ACTIVATE_PATH[] = "/sys/class/leds/vibrator/activate";
static constexpr char DURATION_PATH[] = "/sys/class/leds/vibrator/duration";
static constexpr char STATE_PATH[] = "/sys/class/leds/vibrator/state";
static constexpr char EFFECT_INDEX_PATH[] = "/sys/class/leds/vibrator/device/cp_trigger_index";
static constexpr char EFFECT_QUEUE_PATH[] = "/sys/class/leds/vibrator/device/cp_trigger_queue";
static constexpr char DIGI_SCALE_PATH[] = "/sys/class/leds/vibrator/device/dig_scale";
// File path to the calibration file
static constexpr char CALIBRATION_FILEPATH[] = "/persist/haptics/cs40l20.cal";
// Kernel ABIs for updating the calibration data
static constexpr char F0_CONFIG[] = "f0_measured";
static constexpr char REDC_CONFIG[] = "redc_measured";
static constexpr char F0_FILEPATH[] = "/sys/class/leds/vibrator/device/f0_stored";
static constexpr char REDC_FILEPATH[] = "/sys/class/leds/vibrator/device/redc_stored";
static std::string trim(const std::string& str,
const std::string& whitespace = " \t") {
const auto str_begin = str.find_first_not_of(whitespace);
if (str_begin == std::string::npos) {
return "";
}
const auto str_end = str.find_last_not_of(whitespace);
const auto str_range = str_end - str_begin + 1;
return str.substr(str_begin, str_range);
}
static bool loadCalibrationData() {
std::map<std::string, std::string> config_data;
std::ofstream f0{F0_FILEPATH};
if (!f0) {
ALOGE("Failed to open %s (%d): %s", F0_FILEPATH, errno,
strerror(errno));
}
std::ofstream redc{REDC_FILEPATH};
if (!redc) {
ALOGE("Failed to open %s (%d): %s", REDC_FILEPATH, errno,
strerror(errno));
}
std::ifstream cal_data{CALIBRATION_FILEPATH};
if (!cal_data) {
ALOGE("Failed to open %s (%d): %s", CALIBRATION_FILEPATH, errno,
strerror(errno));
return false;
}
for (std::string line; std::getline(cal_data, line);) {
if (line.empty() || line[0] == '#') {
continue;
}
std::istringstream is_line(line);
std::string key;
if (std::getline(is_line, key, ':')) {
std::string value;
if (std::getline(is_line, value)) {
config_data[trim(key)] = trim(value);
}
}
}
if(config_data.find(F0_CONFIG) != config_data.end()) {
f0 << config_data[F0_CONFIG] << std::endl;
}
if(config_data.find(REDC_CONFIG) != config_data.end()) {
redc << config_data[REDC_CONFIG] << std::endl;
}
return true;
}
status_t registerVibratorService() {
// ostreams below are required
std::ofstream activate{ACTIVATE_PATH};
if (!activate) {
ALOGE("Failed to open %s (%d): %s", ACTIVATE_PATH, errno, strerror(errno));
}
std::ofstream duration{DURATION_PATH};
if (!duration) {
ALOGE("Failed to open %s (%d): %s", DURATION_PATH, errno, strerror(errno));
}
std::ofstream state{STATE_PATH};
if (!state) {
ALOGE("Failed to open %s (%d): %s", STATE_PATH, errno, strerror(errno));
}
std::ofstream effect{EFFECT_INDEX_PATH};
if (!state) {
ALOGE("Failed to open %s (%d): %s", EFFECT_INDEX_PATH, errno, strerror(errno));
}
std::ofstream queue{EFFECT_QUEUE_PATH};
if (!state) {
ALOGE("Failed to open %s (%d): %s", EFFECT_QUEUE_PATH, errno, strerror(errno));
}
std::ofstream scale{DIGI_SCALE_PATH};
if (!scale) {
ALOGE("Failed to open %s (%d): %s", DIGI_SCALE_PATH, errno, strerror(errno));
}
state << 1 << std::endl;
if (!state) {
ALOGE("Failed to set state (%d): %s", errno, strerror(errno));
}
if (!loadCalibrationData()) {
ALOGW("Failed to load calibration data");
}
sp<IVibrator> vibrator = new Vibrator(std::move(activate), std::move(duration),
std::move(effect), std::move(queue), std::move(scale));
return vibrator->registerAsService();
}
int main() {
configureRpcThreadpool(1, true);
status_t status = registerVibratorService();
if (status != OK) {
return status;
}
joinRpcThreadpool();
}
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