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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMECAST_DEVICE_BLUETOOTH_LE_REMOTE_CHARACTERISTIC_IMPL_H_
#define CHROMECAST_DEVICE_BLUETOOTH_LE_REMOTE_CHARACTERISTIC_IMPL_H_
#include <atomic>
#include <map>
#include <memory>
#include <vector>
#include "base/memory/weak_ptr.h"
#include "base/task/single_thread_task_runner.h"
#include "chromecast/device/bluetooth/le/remote_characteristic.h"
namespace chromecast {
namespace bluetooth {
class GattClientManagerImpl;
class RemoteDescriptor;
class RemoteDescriptorImpl;
class RemoteDeviceImpl;
// A proxy for a remote characteristic on a RemoteDevice. Unless otherwise
// specified, all callbacks are run on the caller's thread.
class RemoteCharacteristicImpl : public RemoteCharacteristic {
public:
RemoteCharacteristicImpl(const RemoteCharacteristicImpl&) = delete;
RemoteCharacteristicImpl& operator=(const RemoteCharacteristicImpl&) = delete;
// RemoteCharacteristic impl:
std::vector<scoped_refptr<RemoteDescriptor>> GetDescriptors() override;
scoped_refptr<RemoteDescriptor> GetDescriptorByUuid(
const bluetooth_v2_shlib::Uuid& uuid) override;
void SetRegisterNotification(bool enable, StatusCallback cb) override;
void SetNotification(bool enable, StatusCallback cb) override;
void SetRegisterNotificationOrIndication(bool enable,
StatusCallback cb) override;
void ReadAuth(bluetooth_v2_shlib::Gatt::Client::AuthReq auth_req,
ReadCallback callback) override;
void Read(ReadCallback callback) override;
void WriteAuth(bluetooth_v2_shlib::Gatt::Client::AuthReq auth_req,
bluetooth_v2_shlib::Gatt::WriteType write_type,
const std::vector<uint8_t>& value,
StatusCallback callback) override;
void Write(const std::vector<uint8_t>& value,
StatusCallback callback) override;
bool NotificationEnabled() override;
const bluetooth_v2_shlib::Uuid& uuid() const override;
HandleId handle() const override;
bluetooth_v2_shlib::Gatt::Permissions permissions() const override;
bluetooth_v2_shlib::Gatt::Properties properties() const override;
const bluetooth_v2_shlib::Gatt::Characteristic& characteristic() const;
// Mark the object as out of scope.
void Invalidate();
private:
friend class GattClientManagerImpl;
friend class RemoteDeviceImpl;
friend class RemoteServiceImpl;
RemoteCharacteristicImpl(
RemoteDeviceImpl* device,
base::WeakPtr<GattClientManagerImpl> gatt_client_manager,
const bluetooth_v2_shlib::Gatt::Characteristic* characteristic,
scoped_refptr<base::SingleThreadTaskRunner> io_task_runner);
~RemoteCharacteristicImpl() override;
std::map<bluetooth_v2_shlib::Uuid, scoped_refptr<RemoteDescriptorImpl>>
CreateDescriptorMap();
// If |indication| is true, register or deregister indication.
// If |indication| is false, register or deregister notification.
void SetRegisterNotificationOrIndicationInternal(bool indication,
bool enable,
StatusCallback cb);
// Weak reference to avoid refcount loop.
RemoteDeviceImpl* const device_;
base::WeakPtr<GattClientManagerImpl> gatt_client_manager_;
const bluetooth_v2_shlib::Gatt::Characteristic* const characteristic_;
// All bluetooth_v2_shlib calls are run on this task_runner. All members must
// be accessed on this task_runner.
const scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
// Work around http://crbug/831878. This allows notifications on
// characteristics which do not have a CCCD.
const std::unique_ptr<bluetooth_v2_shlib::Gatt::Descriptor> fake_cccd_;
const std::map<bluetooth_v2_shlib::Uuid, scoped_refptr<RemoteDescriptorImpl>>
uuid_to_descriptor_;
std::atomic<bool> notification_enabled_{false};
};
} // namespace bluetooth
} // namespace chromecast
#endif // CHROMECAST_DEVICE_BLUETOOTH_LE_REMOTE_CHARACTERISTIC_IMPL_H_