103 lines
2.5 KiB
C++
103 lines
2.5 KiB
C++
/*
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* Copyright (C) 2017-2018 The LineageOS Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "ConsumerIrService"
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#include <fcntl.h>
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#include <linux/lirc.h>
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#include <android-base/logging.h>
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#include "ConsumerIr.h"
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namespace android {
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namespace hardware {
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namespace ir {
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namespace V1_0 {
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namespace implementation {
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#define LIRC_DEV_PATH "/dev/lirc0"
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static const int dutyCycle = 33;
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static hidl_vec<ConsumerIrFreqRange> rangeVec{
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{.min = 30000, .max = 60000},
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};
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static int openLircDev() {
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int fd = open(LIRC_DEV_PATH, O_RDWR);
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if (fd < 0) {
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LOG(ERROR) << "failed to open " << LIRC_DEV_PATH << ", error " << fd;
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}
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return fd;
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}
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// Methods from ::android::hardware::ir::V1_0::IConsumerIr follow.
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Return<bool> ConsumerIr::transmit(int32_t carrierFreq, const hidl_vec<int32_t>& pattern) {
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size_t entries = pattern.size();
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int rc;
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int lircFd;
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lircFd = openLircDev();
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if (lircFd < 0) {
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return lircFd;
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}
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rc = ioctl(lircFd, LIRC_SET_SEND_CARRIER, &carrierFreq);
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if (rc < 0) {
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LOG(ERROR) << "failed to set carrier " << carrierFreq << ", error: " << errno;
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goto out_close;
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}
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rc = ioctl(lircFd, LIRC_SET_SEND_DUTY_CYCLE, &dutyCycle);
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if (rc < 0) {
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LOG(ERROR) << "failed to set duty cycle " << dutyCycle << ", error: " << errno;
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goto out_close;
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}
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if ((entries & 1) != 0) {
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rc = write(lircFd, pattern.data(), sizeof(int32_t) * entries);
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} else {
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rc = write(lircFd, pattern.data(), sizeof(int32_t) * (entries - 1));
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usleep(pattern[entries - 1]);
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}
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if (rc < 0) {
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LOG(ERROR) << "failed to write pattern " << pattern.size() << ", error: " << errno;
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goto out_close;
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}
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rc = 0;
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out_close:
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close(lircFd);
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return rc == 0;
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}
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Return<void> ConsumerIr::getCarrierFreqs(getCarrierFreqs_cb _hidl_cb) {
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_hidl_cb(true, rangeVec);
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return Void();
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}
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} // namespace implementation
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} // namespace V1_0
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} // namespace ir
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} // namespace hardware
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} // namespace android
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