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