bb89a958e5
This is a revision of the previous 2.0 HIDL-based light HAL.
It accomplishes 2 goals:
1) Support more than 1 light for a given type. This allows Assistant to
use the HAL on TV platforms that have usually 4 indicator lights.
2) Use AIDL, which is the more modern way of writing HALs.
The previous HAL is in hardware/interfaces/light/2.0 and the new one is
in versioned as aidl, as that supports forward compatibility.
Test: atest VtsHalLightTargetTest
Bug: 142715294, 142230898
Change-Id: I08d831ca0380d8bb187e43f6d5c214810ff72f50
120 lines
3.3 KiB
C++
120 lines
3.3 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source 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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#include <iostream>
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#include <string>
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#include <android-base/logging.h>
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#include <android/hardware/light/2.0/ILight.h>
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#include <android/hardware/light/ILights.h>
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#include <binder/IServiceManager.h>
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using android::sp;
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using android::waitForVintfService;
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using android::binder::Status;
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using android::hardware::hidl_vec;
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namespace V2_0 = android::hardware::light::V2_0;
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namespace aidl = android::hardware::light;
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void error(const std::string& msg) {
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LOG(ERROR) << msg;
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std::cerr << msg << std::endl;
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}
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int parseArgs(int argc, char* argv[], unsigned int* color) {
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if (argc > 2) {
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error("Usage: blank_screen [color]");
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return -1;
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}
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if (argc > 1) {
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char* col_ptr;
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*color = strtoul(argv[1], &col_ptr, 0);
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if (*col_ptr != '\0') {
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error("Failed to convert " + std::string(argv[1]) + " to number");
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return -1;
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}
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return 0;
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}
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*color = 0u;
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return 0;
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}
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void setToColorAidl(sp<aidl::ILights> hal, unsigned int color) {
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static aidl::HwLightState off;
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off.color = color;
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off.flashMode = aidl::FlashMode::NONE;
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off.brightnessMode = aidl::BrightnessMode::USER;
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std::vector<aidl::HwLight> lights;
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Status status = hal->getLights(&lights);
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if (!status.isOk()) {
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error("Failed to list lights");
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return;
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}
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for (auto light : lights) {
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Status setStatus = hal->setLightState(light.id, off);
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if (!setStatus.isOk()) {
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error("Failed to shut off light id " + std::to_string(light.id));
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}
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}
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}
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void setToColorHidl(sp<V2_0::ILight> hal, unsigned int color) {
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static V2_0::LightState off = {
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.color = color,
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.flashMode = V2_0::Flash::NONE,
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.brightnessMode = V2_0::Brightness::USER,
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};
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hal->getSupportedTypes([&](const hidl_vec<V2_0::Type>& types) {
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for (auto type : types) {
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V2_0::Status ret = hal->setLight(type, off);
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if (ret != V2_0::Status::SUCCESS) {
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error("Failed to shut off light for type " +
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std::to_string(static_cast<int>(type)));
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}
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}
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});
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}
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int main(int argc, char* argv[]) {
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unsigned int inputColor;
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int result = parseArgs(argc, argv, &inputColor);
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if (result != 0) {
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return result;
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}
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auto aidlHal = waitForVintfService<aidl::ILights>();
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if (aidlHal != nullptr) {
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setToColorAidl(aidlHal, inputColor);
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return 0;
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}
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sp<V2_0::ILight> hidlHal = V2_0::ILight::getService();
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if (hidlHal != nullptr) {
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setToColorHidl(hidlHal, inputColor);
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return 0;
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}
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error("Could not retrieve light service.");
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return -1;
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}
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