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/*
* Copyright 2021 HIMSA II K/S - www.himsa.com.
* Represented by EHIMA - www.ehima.com
*
* 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 <sys/time.h>
#include <time.h>
#include <list>
#include <variant>
#include "common/time_util.h"
#include "has_ctp.h"
/* Journal and journal entry classes used by the state dumping functionality. */
namespace le_audio {
namespace has {
static constexpr uint8_t kHasJournalNumRecords = 20;
struct HasJournalRecord {
/* Indicates which value the `event` contains (due to ambiguous uint8_t) */
bool is_operation : 1, is_notification : 1, is_features_change : 1,
is_active_preset_change : 1;
std::variant<HasCtpOp, HasCtpNtf, uint8_t> event;
struct timespec timestamp;
/* Operation context handle to match on GATT write response */
void* op_context_handle;
/* Status of the operation to be set once it gets completed */
uint8_t op_status;
HasJournalRecord(const HasCtpOp& op, void* context)
: event(op), op_context_handle(context) {
clock_gettime(CLOCK_REALTIME, ×tamp);
is_operation = true;
is_notification = false;
is_features_change = false;
is_active_preset_change = false;
}
HasJournalRecord(const HasCtpNtf& ntf) : event(ntf) {
clock_gettime(CLOCK_REALTIME, ×tamp);
is_operation = false;
is_notification = true;
is_features_change = false;
is_active_preset_change = false;
}
HasJournalRecord(uint8_t value, bool is_feat_change) : event(value) {
clock_gettime(CLOCK_REALTIME, ×tamp);
is_operation = false;
is_notification = false;
if (is_feat_change) {
is_active_preset_change = false;
is_features_change = true;
} else {
is_active_preset_change = true;
is_features_change = false;
}
}
};
std::ostream& operator<<(std::ostream& os, const HasJournalRecord& r);
template <class valT, size_t cache_max>
class CacheList {
public:
valT& Append(valT data) {
items_.push_front(std::move(data));
if (items_.size() > cache_max) {
items_.pop_back();
}
return items_.front();
}
using iterator = typename std::list<valT>::iterator;
iterator begin(void) { return items_.begin(); }
iterator end(void) { return items_.end(); }
using const_iterator = typename std::list<valT>::const_iterator;
const_iterator begin(void) const { return items_.begin(); }
const_iterator end(void) const { return items_.end(); }
void Erase(iterator it) {
if (it != items_.end()) items_.erase(it);
}
void Clear(void) { items_.clear(); }
bool isEmpty(void) { return items_.empty(); }
private:
typename std::list<valT> items_;
};
using HasJournal = CacheList<HasJournalRecord, kHasJournalNumRecords>;
} // namespace has
} // namespace le_audio
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