You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.9 KiB
64 lines
1.9 KiB
/*
|
|
* Copyright 2018 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 <map>
|
|
|
|
namespace bluetooth {
|
|
namespace avrcp {
|
|
|
|
// A helper class to convert Media ID's (represented as strings) that are
|
|
// received from the AVRCP Media Interface layer into UID's to be used
|
|
// with connected devices.
|
|
class MediaIdMap {
|
|
public:
|
|
void clear() {
|
|
media_id_to_uid_.clear();
|
|
uid_to_media_id_.clear();
|
|
}
|
|
|
|
std::string get_media_id(uint64_t uid) {
|
|
const auto& uid_it = uid_to_media_id_.find(uid);
|
|
if (uid_it == uid_to_media_id_.end()) return "";
|
|
return uid_it->second;
|
|
}
|
|
|
|
uint64_t get_uid(std::string media_id) {
|
|
const auto& media_id_it = media_id_to_uid_.find(media_id);
|
|
if (media_id_it == media_id_to_uid_.end()) return 0;
|
|
return media_id_it->second;
|
|
}
|
|
|
|
uint64_t insert(std::string media_id) {
|
|
if (media_id_to_uid_.find(media_id) != media_id_to_uid_.end()) {
|
|
return media_id_to_uid_[media_id];
|
|
}
|
|
|
|
uint64_t uid = media_id_to_uid_.size() + 1;
|
|
media_id_to_uid_.insert(std::pair<std::string, uint64_t>(media_id, uid));
|
|
uid_to_media_id_.insert(std::pair<uint64_t, std::string>(uid, media_id));
|
|
return uid;
|
|
}
|
|
|
|
private:
|
|
std::map<std::string, uint64_t> media_id_to_uid_;
|
|
std::map<uint64_t, std::string> uid_to_media_id_;
|
|
};
|
|
|
|
} // namespace avrcp
|
|
} // namespace bluetooth
|