/*
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* Copyright (C) 2018 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 <bufferhub/BufferClient.h>
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#include <bufferhub/BufferHubService.h>
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#include <hidl/HidlSupport.h>
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#include <log/log.h>
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namespace android {
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namespace frameworks {
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namespace bufferhub {
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namespace V1_0 {
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namespace implementation {
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using hardware::hidl_handle;
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using hardware::Void;
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BufferClient* BufferClient::create(BufferHubService* service,
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const std::shared_ptr<BufferNode>& node) {
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if (!service) {
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ALOGE("%s: service cannot be nullptr.", __FUNCTION__);
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return nullptr;
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} else if (!node) {
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ALOGE("%s: node cannot be nullptr.", __FUNCTION__);
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return nullptr;
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}
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return new BufferClient(service, node);
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}
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BufferClient::~BufferClient() {
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{
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std::lock_guard<std::mutex> lock(mClosedMutex);
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if (!mClosed) {
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ALOGW("%s: client of buffer #%d destroyed without close. Closing it now.", __FUNCTION__,
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mBufferNode->id());
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}
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}
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close();
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}
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Return<BufferHubStatus> BufferClient::close() {
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std::lock_guard<std::mutex> lock(mClosedMutex);
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if (mClosed) {
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return BufferHubStatus::CLIENT_CLOSED;
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}
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getService()->onClientClosed(this);
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mBufferNode.reset();
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mClosed = true;
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return BufferHubStatus::NO_ERROR;
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}
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Return<void> BufferClient::duplicate(duplicate_cb _hidl_cb) {
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std::lock_guard<std::mutex> lock(mClosedMutex);
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if (mClosed) {
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_hidl_cb(/*token=*/hidl_handle(), /*status=*/BufferHubStatus::CLIENT_CLOSED);
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return Void();
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}
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if (!mBufferNode) {
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// Should never happen
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ALOGE("%s: node is missing.", __FUNCTION__);
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_hidl_cb(/*token=*/hidl_handle(), /*status=*/BufferHubStatus::BUFFER_FREED);
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return Void();
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}
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const hidl_handle token = getService()->registerToken(this);
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_hidl_cb(/*token=*/token, /*status=*/BufferHubStatus::NO_ERROR);
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return Void();
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}
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sp<BufferHubService> BufferClient::getService() {
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sp<BufferHubService> service = mService.promote();
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if (service == nullptr) {
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// Should never happen. Kill the process.
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LOG_FATAL("%s: service died.", __FUNCTION__);
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}
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return service;
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}
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} // namespace implementation
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} // namespace V1_0
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} // namespace bufferhub
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} // namespace frameworks
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} // namespace android
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