L2CAP dynamic channel API (28d7978e) · Commits · e / os / android_packages_modules_Bluetooth

system/gd/l2cap/Android.bp

+3 −0

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		@@ -3,6 +3,9 @@ filegroup {
		srcs: [
		"fcs.cc",
		"l2cap_layer.cc",
		"classic_dynamic_channel.cc",
		"classic_dynamic_channel_manager.cc",
		"classic_dynamic_channel_service.cc",
		"classic_fixed_channel.cc",
		"classic_fixed_channel_manager.cc",
		"classic_fixed_channel_service.cc",

system/gd/l2cap/cid.h

+1 −1

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		@@ -27,7 +27,7 @@ constexpr Cid kInvalidCid = 0;
		constexpr Cid kFirstFixedChannel = 1;
		constexpr Cid kLastFixedChannel = 63;
		constexpr Cid kFirstDynamicChannel = kLastFixedChannel + 1;
		constexpr Cid kLastDynamicChannel = (uint16_t)(0xffff + 1);
		constexpr Cid kLastDynamicChannel = (uint16_t)(0xffff);

		constexpr Cid kClassicSignallingCid = 1;
		constexpr Cid kConnectionlessCid = 2;

system/gd/l2cap/classic_dynamic_channel.cc

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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 "l2cap/classic_dynamic_channel.h"
		#include "common/bind.h"

		namespace bluetooth {
		namespace l2cap {

		hci::Address ClassicDynamicChannel::GetDevice() const {
		return {};
		}

		void ClassicDynamicChannel::RegisterOnCloseCallback(os::Handler* user_handler,
		ClassicDynamicChannel::OnCloseCallback on_close_callback) {}

		void ClassicDynamicChannel::Close() {}

		common::BidiQueueEnd<packet::BasePacketBuilder, packet::PacketView<packet::kLittleEndian>>*
		ClassicDynamicChannel::GetQueueUpEnd() const {
		return nullptr;
		}
		} // namespace l2cap
		} // namespace bluetooth
		No newline at end of file

system/gd/l2cap/classic_dynamic_channel.h

0 → 100644

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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.
		*/
		#pragma once

		#include "common/bidi_queue.h"
		#include "common/callback.h"
		#include "hci/acl_manager.h"
		#include "os/handler.h"
		#include "packet/base_packet_builder.h"
		#include "packet/packet_view.h"

		namespace bluetooth {
		namespace l2cap {

		namespace internal {
		class ClassicDynamicChannelImpl;
		} // namespace internal

		/**
		* L2CAP Dynamic channel object. User needs to call Close() when user no longer wants to use it. Otherwise the link
		* won't be disconnected.
		*/
		class ClassicDynamicChannel {
		public:
		// Should only be constructed by modules that have access to ClassicLinkManager
		ClassicDynamicChannel(std::shared_ptr<internal::ClassicDynamicChannelImpl> impl, os::Handler* l2cap_handler)
		: impl_(std::move(impl)), l2cap_handler_(l2cap_handler) {
		ASSERT(impl_ != nullptr);
		ASSERT(l2cap_handler_ != nullptr);
		}

		hci::Address GetDevice() const;

		/**
		* Register close callback. If close callback is registered, when a channel is closed, the channel's resource will
		* only be freed after on_close callback is invoked. Otherwise, if no on_close callback is registered, the channel's
		* resource will be freed immediately after closing.
		*
		* @param user_handler The handler used to invoke the callback on
		* @param on_close_callback The callback invoked upon channel closing.
		*/
		using OnCloseCallback = common::OnceCallback<void(hci::ErrorCode)>;
		void RegisterOnCloseCallback(os::Handler* user_handler, OnCloseCallback on_close_callback);

		/**
		* Indicate that this Dynamic Channel should be closed. OnCloseCallback will be invoked when channel close is done.
		* L2cay layer may terminate this ACL connection to free the resource after channel is closed.
		*/
		void Close();

		/**
		* This method will retrieve the data channel queue to send and receive packets.
		*
		* {@see BidiQueueEnd}
		*
		* @return The upper end of a bi-directional queue.
		*/
		common::BidiQueueEnd<packet::BasePacketBuilder, packet::PacketView<packet::kLittleEndian>>* GetQueueUpEnd() const;

		private:
		std::shared_ptr<internal::ClassicDynamicChannelImpl> impl_;
		os::Handler* l2cap_handler_;
		};

		} // namespace l2cap
		} // namespace bluetooth

system/gd/l2cap/classic_dynamic_channel_manager.cc

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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 "l2cap/classic_dynamic_channel_manager.h"
		#include "l2cap/internal/classic_link_manager.h"

		namespace bluetooth {
		namespace l2cap {

		bool ClassicDynamicChannelManager::ConnectChannel(hci::Address device, Psm psm,
		OnConnectionOpenCallback on_connection_open,
		OnConnectionFailureCallback on_fail_callback, os::Handler* handler) {
		// TODO impl me when there is no link, and when there is link
		return false;
		}

		bool ClassicDynamicChannelManager::RegisterService(Psm psm, const SecurityPolicy& security_policy,
		OnRegistrationCompleteCallback on_registration_complete,
		OnConnectionOpenCallback on_connection_open, os::Handler* handler) {
		return false;
		}

		} // namespace l2cap
		} // namespace bluetooth