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//
// Copyright 2015 Google, Inc.
//
// 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 "service/gatt_client.h"
#include <base/logging.h>
using std::lock_guard;
using std::mutex;
namespace bluetooth {
// GattClient implementation
// ========================================================
GattClient::GattClient(const Uuid& uuid, int client_id)
: app_identifier_(uuid), client_id_(client_id) {}
GattClient::~GattClient() {
// Automatically unregister the client.
VLOG(1) << "GattClient unregistering client: " << client_id_;
hal::BluetoothGattInterface::Get()
->GetClientHALInterface()
->unregister_client(client_id_);
}
const Uuid& GattClient::GetAppIdentifier() const { return app_identifier_; }
int GattClient::GetInstanceId() const { return client_id_; }
// GattClientFactory implementation
// ========================================================
GattClientFactory::GattClientFactory() {
hal::BluetoothGattInterface::Get()->AddClientObserver(this);
}
GattClientFactory::~GattClientFactory() {
hal::BluetoothGattInterface::Get()->RemoveClientObserver(this);
}
bool GattClientFactory::RegisterInstance(const Uuid& uuid,
const RegisterCallback& callback) {
VLOG(1) << __func__ << " - Uuid: " << uuid.ToString();
lock_guard<mutex> lock(pending_calls_lock_);
if (pending_calls_.find(uuid) != pending_calls_.end()) {
LOG(ERROR) << "GATT client with given Uuid already registered - "
<< "Uuid: " << uuid.ToString();
return false;
}
const btgatt_client_interface_t* hal_iface =
hal::BluetoothGattInterface::Get()->GetClientHALInterface();
if (hal_iface->register_client(uuid) != BT_STATUS_SUCCESS) return false;
pending_calls_[uuid] = callback;
return true;
}
void GattClientFactory::RegisterClientCallback(
hal::BluetoothGattInterface* /* gatt_iface */, int status, int client_id,
const Uuid& app_uuid) {
Uuid uuid(app_uuid);
auto iter = pending_calls_.find(uuid);
if (iter == pending_calls_.end()) {
VLOG(1) << "Ignoring callback for unknown app_id: " << uuid.ToString();
return;
}
bool success = (status == BT_STATUS_SUCCESS);
BLEStatus result = success ? BLE_STATUS_SUCCESS : BLE_STATUS_FAILURE;
// No need to construct a client if the call wasn't successful.
std::unique_ptr<GattClient> client;
if (success) client.reset(new GattClient(uuid, client_id));
// Notify the result via the result callback.
iter->second(result, uuid, std::move(client));
pending_calls_.erase(iter);
}
} // namespace bluetooth
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