mirror of
https://github.com/openharmony/midi_framework.git
synced 2026-07-01 22:04:00 -04:00
Robin
82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
/*
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* Copyright (c) 2025 Huawei Device Co., Ltd.
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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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* http://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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*/
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#ifndef MIDI_CLIENT_CONNECTION_H
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#define MIDI_CLIENT_CONNECTION_H
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#include <vector>
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#include <chrono>
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#include <queue>
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#include "midi_shared_ring.h"
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namespace OHOS {
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namespace MIDI {
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namespace {
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const uint32_t DEFAULT_RING_BUFFER_SIZE = 2048;
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}
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class ClientConnectionInServer {
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public:
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struct PendingEvent {
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std::chrono::steady_clock::time_point due;
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std::vector<uint8_t> data;
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uint64_t timestamp = 0;
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};
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struct PendingGreater {
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bool operator()(const PendingEvent& a, const PendingEvent& b) const
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{
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return a.due > b.due;
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}
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};
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public:
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ClientConnectionInServer(uint32_t clientId, int64_t handle, uint32_t portIndex)
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: clientId_(clientId), deviceHandle_(handle), portIndex_(portIndex) {}
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~ClientConnectionInServer() = default;
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int32_t CreateRingBuffer();
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int64_t GetDeviceHandle() const { return deviceHandle_; }
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uint32_t GetClientId() const { return clientId_; }
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int64_t GetPortIndex() const { return portIndex_; }
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std::shared_ptr<MidiSharedRing> GetRingBuffer();
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int32_t TrySendToClient(const MidiEventInner& event);
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void SetMaxPending(size_t maxPending) { maxPending_ = maxPending; }
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bool IsPendingFull() const { return pending_.size() >= maxPending_; }
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bool HasPending() const { return !pending_.empty(); }
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bool EnqueueNonRealtime(const uint8_t* payload, size_t len,
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const std::chrono::steady_clock::time_point& due,
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uint64_t ts);
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const PendingEvent* PeekPendingTop() const;
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bool PopPendingTop(PendingEvent& out);
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private:
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uint32_t clientId_ = 0;
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int64_t deviceHandle_ = -1;
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uint32_t portIndex_ = -1;
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std::shared_ptr<MidiSharedRing> sharedRingBuffer_ = nullptr;
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size_t maxPending_ = 1024;
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std::priority_queue<PendingEvent, std::vector<PendingEvent>, PendingGreater> pending_;
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};
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} // namespace MIDI
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} // namespace OHOS
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#endif |