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https://github.com/kidfromjupiter/nearby.git
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jsobczak
cfa9e555c7
Define BroadcastRequest class with some preliminary support for Base NP advertisement. PiperOrigin-RevId: 456549911
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
// Copyright 2022 Google LLC
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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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// https://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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#ifndef THIRD_PARTY_NEARBY_PRESENCE_BROADCAST_REQUEST_H_
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#define THIRD_PARTY_NEARBY_PRESENCE_BROADCAST_REQUEST_H_
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#include <stdint.h>
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#include <string>
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#include <variant>
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#include "absl/strings/string_view.h"
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#include "absl/types/variant.h"
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#include "third_party/nearby/presence/presence_identity.h"
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namespace nearby {
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namespace presence {
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constexpr int8_t kUnspecifiedTxPower = -128;
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/** Defines the action (intended actions) of base NP advertisement */
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struct Action {
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uint16_t action;
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};
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/** Defines a Nearby Presence broadcast request */
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struct BroadcastRequest {
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struct BasePresence {
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PresenceIdentity identity;
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Action action;
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};
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struct BaseFastPair {
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struct Discoverable {
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std::string model_id;
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};
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struct Nondiscoverable {
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std::string account_key_data;
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std::string battery_info;
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};
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std::variant<Discoverable, Nondiscoverable> advertisement;
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};
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struct BaseEddystone {
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std::string ephemeral_id;
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};
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std::variant<BasePresence, BaseFastPair, BaseEddystone> variant;
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std::string salt;
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int8_t tx_power;
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unsigned int interval_ms;
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};
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/** Builds a brodacast request variant with NP identity for BLE 4.2 */
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class BasePresenceRequestBuilder {
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public:
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explicit BasePresenceRequestBuilder(const PresenceIdentity& identity)
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: identity_(identity) {}
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BasePresenceRequestBuilder& SetSalt(absl::string_view salt);
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BasePresenceRequestBuilder& SetTxPower(int8_t tx_power);
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BasePresenceRequestBuilder& SetAction(const Action& action);
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explicit operator BroadcastRequest() const;
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private:
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PresenceIdentity identity_;
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std::string salt_;
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int8_t tx_power_ = kUnspecifiedTxPower;
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Action action_;
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};
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} // namespace presence
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} // namespace nearby
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#endif // THIRD_PARTY_NEARBY_PRESENCE_BROADCAST_REQUEST_H_
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