/*

 * Copyright (c) 2025 Huawei Device Co., Ltd.

 * 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.

 */

#ifndef RENDER_SERVICE_BASE_RS_HPAE_SCHEDULER_H

#define RENDER_SERVICE_BASE_RS_HPAE_SCHEDULER_H



#include <condition_variable>

#include <deque>

#include <map>

#include <mutex>

#include <vector>



#include "hpae_base/rs_hpae_base_types.h"



namespace OHOS::Rosen {



class RSB_EXPORT RSHpaeScheduler {

public:

    RSHpaeScheduler(const RSHpaeScheduler &) = delete;

    RSHpaeScheduler &operator=(const RSHpaeScheduler &) = delete;

    static RSHpaeScheduler &GetInstance();



    // call from HpaeSubThread

    void Reset();

    void CacheHpaeItem(const HpaeBackgroundCacheItem& item);

    HpaeBackgroundCacheItem GetCachedHpaeItem();



    // call from graphic pattern

    void SetHpaeFrameId(uint64_t frameId);

    uint64_t GetHpaeFrameId() const;



    void SetToWaitBuildTask();

    void NotifyBuildTaskDone();

    void WaitBuildTask();



private:

    RSHpaeScheduler() = default;

    ~RSHpaeScheduler() = default;



    mutable std::mutex mutex_; // main mutex for public API

    HpaeBackgroundCacheItem cachedItem_; // item to submit for current frame

    uint64_t hpaeFrameId_ = 0; // frameId for background (preFrameId)



    std::mutex buildTaskMutex_;

    bool buildTaskDone_ = true;

    std::condition_variable buildTaskCv_;

};



} // OHOS::Rosen



#endif // RENDER_SERVICE_BASE_RS_HPAE_SCHEDULER_H