1 /*
2 * Copyright 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "hal/facade.h"
18
19 #include <memory>
20 #include <mutex>
21
22 #include "grpc/grpc_event_queue.h"
23 #include "hal/facade.grpc.pb.h"
24 #include "hal/hci_hal.h"
25
26 using ::grpc::ServerAsyncResponseWriter;
27 using ::grpc::ServerAsyncWriter;
28 using ::grpc::ServerContext;
29
30 namespace bluetooth {
31 namespace hal {
32
33 class HciHalFacadeService : public HciHalFacade::Service, public ::bluetooth::hal::HciHalCallbacks {
34 public:
HciHalFacadeService(HciHal * hal)35 explicit HciHalFacadeService(HciHal* hal) : hal_(hal) {
36 hal->registerIncomingPacketCallback(this);
37 }
38
~HciHalFacadeService()39 ~HciHalFacadeService() override {
40 hal_->unregisterIncomingPacketCallback();
41 }
42
SendHciCommand(::grpc::ServerContext * context,const::bluetooth::hal::HciCommandPacket * request,::google::protobuf::Empty * response)43 ::grpc::Status SendHciCommand(::grpc::ServerContext* context, const ::bluetooth::hal::HciCommandPacket* request,
44 ::google::protobuf::Empty* response) override {
45 std::unique_lock<std::mutex> lock(mutex_);
46 can_send_hci_command_ = false;
47 std::string req_string = request->payload();
48 hal_->sendHciCommand(std::vector<uint8_t>(req_string.begin(), req_string.end()));
49 while (!can_send_hci_command_) {
50 cv_.wait(lock);
51 }
52 return ::grpc::Status::OK;
53 }
54
SendHciAcl(::grpc::ServerContext * context,const::bluetooth::hal::HciAclPacket * request,::google::protobuf::Empty * response)55 ::grpc::Status SendHciAcl(::grpc::ServerContext* context, const ::bluetooth::hal::HciAclPacket* request,
56 ::google::protobuf::Empty* response) override {
57 std::string req_string = request->payload();
58 hal_->sendAclData(std::vector<uint8_t>(req_string.begin(), req_string.end()));
59 return ::grpc::Status::OK;
60 }
61
SendHciSco(::grpc::ServerContext * context,const::bluetooth::hal::HciScoPacket * request,::google::protobuf::Empty * response)62 ::grpc::Status SendHciSco(::grpc::ServerContext* context, const ::bluetooth::hal::HciScoPacket* request,
63 ::google::protobuf::Empty* response) override {
64 std::string req_string = request->payload();
65 hal_->sendScoData(std::vector<uint8_t>(req_string.begin(), req_string.end()));
66 return ::grpc::Status::OK;
67 }
68
FetchHciEvent(::grpc::ServerContext * context,const::google::protobuf::Empty * request,::grpc::ServerWriter<HciEventPacket> * writer)69 ::grpc::Status FetchHciEvent(::grpc::ServerContext* context, const ::google::protobuf::Empty* request,
70 ::grpc::ServerWriter<HciEventPacket>* writer) override {
71 return pending_hci_events_.RunLoop(context, writer);
72 };
73
FetchHciAcl(::grpc::ServerContext * context,const::google::protobuf::Empty * request,::grpc::ServerWriter<HciAclPacket> * writer)74 ::grpc::Status FetchHciAcl(::grpc::ServerContext* context, const ::google::protobuf::Empty* request,
75 ::grpc::ServerWriter<HciAclPacket>* writer) override {
76 return pending_acl_events_.RunLoop(context, writer);
77 };
78
FetchHciSco(::grpc::ServerContext * context,const::google::protobuf::Empty * request,::grpc::ServerWriter<HciScoPacket> * writer)79 ::grpc::Status FetchHciSco(::grpc::ServerContext* context, const ::google::protobuf::Empty* request,
80 ::grpc::ServerWriter<HciScoPacket>* writer) override {
81 return pending_sco_events_.RunLoop(context, writer);
82 };
83
hciEventReceived(bluetooth::hal::HciPacket event)84 void hciEventReceived(bluetooth::hal::HciPacket event) override {
85 {
86 HciEventPacket response;
87 response.set_payload(std::string(event.begin(), event.end()));
88 pending_hci_events_.OnIncomingEvent(std::move(response));
89 }
90 can_send_hci_command_ = true;
91 cv_.notify_one();
92 }
93
aclDataReceived(bluetooth::hal::HciPacket data)94 void aclDataReceived(bluetooth::hal::HciPacket data) override {
95 HciAclPacket response;
96 response.set_payload(std::string(data.begin(), data.end()));
97 pending_acl_events_.OnIncomingEvent(std::move(response));
98 }
99
scoDataReceived(bluetooth::hal::HciPacket data)100 void scoDataReceived(bluetooth::hal::HciPacket data) override {
101 HciScoPacket response;
102 response.set_payload(std::string(data.begin(), data.end()));
103 pending_sco_events_.OnIncomingEvent(std::move(response));
104 }
105
106 private:
107 HciHal* hal_;
108 bool can_send_hci_command_ = true;
109 mutable std::mutex mutex_;
110 std::condition_variable cv_;
111 ::bluetooth::grpc::GrpcEventQueue<HciEventPacket> pending_hci_events_{"FetchHciEvent"};
112 ::bluetooth::grpc::GrpcEventQueue<HciAclPacket> pending_acl_events_{"FetchHciAcl"};
113 ::bluetooth::grpc::GrpcEventQueue<HciScoPacket> pending_sco_events_{"FetchHciSco"};
114 };
115
ListDependencies(ModuleList * list)116 void HciHalFacadeModule::ListDependencies(ModuleList* list) {
117 ::bluetooth::grpc::GrpcFacadeModule::ListDependencies(list);
118 list->add<HciHal>();
119 }
120
Start()121 void HciHalFacadeModule::Start() {
122 ::bluetooth::grpc::GrpcFacadeModule::Start();
123 service_ = new HciHalFacadeService(GetDependency<HciHal>());
124 }
125
Stop()126 void HciHalFacadeModule::Stop() {
127 delete service_;
128 ::bluetooth::grpc::GrpcFacadeModule::Stop();
129 }
130
GetService() const131 ::grpc::Service* HciHalFacadeModule::GetService() const {
132 return service_;
133 }
134
__anond72826490102() 135 const ModuleFactory HciHalFacadeModule::Factory = ::bluetooth::ModuleFactory([]() { return new HciHalFacadeModule(); });
136
137 } // namespace hal
138 } // namespace bluetooth
139