89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
// Copyright (C) 2020 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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#include "BusDeviceProvider.h"
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#include <algorithm>
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namespace audio_proxy {
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namespace service {
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class BusDeviceProvider::DeathRecipient : public hidl_death_recipient {
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public:
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explicit DeathRecipient(BusDeviceProvider& owner) : mOwner(owner) {}
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~DeathRecipient() override = default;
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void serviceDied(
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uint64_t token,
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const android::wp<::android::hidl::base::V1_0::IBase>& who) override {
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mOwner.removeByToken(token);
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}
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private:
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BusDeviceProvider& mOwner;
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};
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BusDeviceProvider::BusDeviceProvider()
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: mDeathRecipient(new DeathRecipient(*this)) {}
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BusDeviceProvider::~BusDeviceProvider() = default;
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bool BusDeviceProvider::add(const hidl_string& address, sp<IBusDevice> device) {
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std::lock_guard<std::mutex> guard(mDevicesLock);
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auto it = std::find_if(mBusDevices.begin(), mBusDevices.end(),
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[&address](const BusDeviceHolder& holder) {
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return holder.address == address;
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});
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if (it != mBusDevices.end()) {
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return false;
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}
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uint64_t token = mNextToken++;
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mBusDevices.push_back({device, address, token});
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device->linkToDeath(mDeathRecipient, token);
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return true;
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}
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sp<IBusDevice> BusDeviceProvider::get(const hidl_string& address) {
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std::lock_guard<std::mutex> guard(mDevicesLock);
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auto it = std::find_if(mBusDevices.begin(), mBusDevices.end(),
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[&address](const BusDeviceHolder& holder) {
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return holder.address == address;
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});
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if (it == mBusDevices.end()) {
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return nullptr;
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}
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return it->device;
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}
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void BusDeviceProvider::removeAll() {
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std::lock_guard<std::mutex> guard(mDevicesLock);
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mBusDevices.clear();
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}
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void BusDeviceProvider::removeByToken(uint64_t token) {
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std::lock_guard<std::mutex> guard(mDevicesLock);
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mBusDevices.erase(std::find_if(mBusDevices.begin(), mBusDevices.end(),
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[token](const BusDeviceHolder& holder) {
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return holder.token == token;
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}));
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}
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} // namespace service
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} // namespace audio_proxy
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