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/*
* Copyright 2019 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.
*/
#include "hal/facade.h"
#include <memory>
#include <mutex>
#include "grpc/grpc_event_queue.h"
#include "hal/facade.grpc.pb.h"
#include "hal/hci_hal.h"
using ::grpc::ServerAsyncResponseWriter;
using ::grpc::ServerAsyncWriter;
using ::grpc::ServerContext;
namespace bluetooth {
namespace hal {
class HciHalFacadeService : public HciHalFacade::Service, public ::bluetooth::hal::HciHalCallbacks {
public:
explicit HciHalFacadeService(HciHal* hal) : hal_(hal) {
hal->registerIncomingPacketCallback(this);
}
~HciHalFacadeService() override {
hal_->unregisterIncomingPacketCallback();
}
::grpc::Status SendHciCommand(::grpc::ServerContext* context, const ::bluetooth::hal::HciCommandPacket* request,
::google::protobuf::Empty* response) override {
std::unique_lock<std::mutex> lock(mutex_);
can_send_hci_command_ = false;
std::string req_string = request->payload();
hal_->sendHciCommand(std::vector<uint8_t>(req_string.begin(), req_string.end()));
while (!can_send_hci_command_) {
cv_.wait(lock);
}
return ::grpc::Status::OK;
}
::grpc::Status SendHciAcl(::grpc::ServerContext* context, const ::bluetooth::hal::HciAclPacket* request,
::google::protobuf::Empty* response) override {
std::string req_string = request->payload();
hal_->sendAclData(std::vector<uint8_t>(req_string.begin(), req_string.end()));
return ::grpc::Status::OK;
}
::grpc::Status SendHciSco(::grpc::ServerContext* context, const ::bluetooth::hal::HciScoPacket* request,
::google::protobuf::Empty* response) override {
std::string req_string = request->payload();
hal_->sendScoData(std::vector<uint8_t>(req_string.begin(), req_string.end()));
return ::grpc::Status::OK;
}
::grpc::Status FetchHciEvent(::grpc::ServerContext* context, const ::google::protobuf::Empty* request,
::grpc::ServerWriter<HciEventPacket>* writer) override {
return pending_hci_events_.RunLoop(context, writer);
};
::grpc::Status FetchHciAcl(::grpc::ServerContext* context, const ::google::protobuf::Empty* request,
::grpc::ServerWriter<HciAclPacket>* writer) override {
return pending_acl_events_.RunLoop(context, writer);
};
::grpc::Status FetchHciSco(::grpc::ServerContext* context, const ::google::protobuf::Empty* request,
::grpc::ServerWriter<HciScoPacket>* writer) override {
return pending_sco_events_.RunLoop(context, writer);
};
void hciEventReceived(bluetooth::hal::HciPacket event) override {
{
HciEventPacket response;
response.set_payload(std::string(event.begin(), event.end()));
pending_hci_events_.OnIncomingEvent(std::move(response));
}
can_send_hci_command_ = true;
cv_.notify_one();
}
void aclDataReceived(bluetooth::hal::HciPacket data) override {
HciAclPacket response;
response.set_payload(std::string(data.begin(), data.end()));
pending_acl_events_.OnIncomingEvent(std::move(response));
}
void scoDataReceived(bluetooth::hal::HciPacket data) override {
HciScoPacket response;
response.set_payload(std::string(data.begin(), data.end()));
pending_sco_events_.OnIncomingEvent(std::move(response));
}
private:
HciHal* hal_;
bool can_send_hci_command_ = true;
mutable std::mutex mutex_;
std::condition_variable cv_;
::bluetooth::grpc::GrpcEventQueue<HciEventPacket> pending_hci_events_{"FetchHciEvent"};
::bluetooth::grpc::GrpcEventQueue<HciAclPacket> pending_acl_events_{"FetchHciAcl"};
::bluetooth::grpc::GrpcEventQueue<HciScoPacket> pending_sco_events_{"FetchHciSco"};
};
void HciHalFacadeModule::ListDependencies(ModuleList* list) {
::bluetooth::grpc::GrpcFacadeModule::ListDependencies(list);
list->add<HciHal>();
}
void HciHalFacadeModule::Start() {
::bluetooth::grpc::GrpcFacadeModule::Start();
service_ = new HciHalFacadeService(GetDependency<HciHal>());
}
void HciHalFacadeModule::Stop() {
delete service_;
::bluetooth::grpc::GrpcFacadeModule::Stop();
}
::grpc::Service* HciHalFacadeModule::GetService() const {
return service_;
}
const ModuleFactory HciHalFacadeModule::Factory = ::bluetooth::ModuleFactory([]() { return new HciHalFacadeModule(); });
} // namespace hal
} // namespace bluetooth
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