/* Copyright Statement:
 *
 * This software/firmware and related documentation ("MediaTek Software") are
 * protected under relevant copyright laws. The information contained herein is
 * confidential and proprietary to MediaTek Inc. and/or its licensors. Without
 * the prior written permission of MediaTek inc. and/or its licensors, any
 * reproduction, modification, use or disclosure of MediaTek Software, and
 * information contained herein, in whole or in part, shall be strictly
 * prohibited.
 *
 * MediaTek Inc. (C) 2022. All rights reserved.
 *
 * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
 * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
 * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER
 * ON AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL
 * WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NONINFRINGEMENT. NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH
 * RESPECT TO THE SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY,
 * INCORPORATED IN, OR SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES
 * TO LOOK ONLY TO SUCH THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO.
 * RECEIVER EXPRESSLY ACKNOWLEDGES THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO
 * OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES CONTAINED IN MEDIATEK
 * SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE
 * RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
 * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S
 * ENTIRE AND CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE
 * RELEASED HEREUNDER WILL BE, AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE
 * MEDIATEK SOFTWARE AT ISSUE, OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE
 * CHARGE PAID BY RECEIVER TO MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
 *
 * The following software/firmware and/or related documentation ("MediaTek
 * Software") have been modified by MediaTek Inc. All revisions are subject to
 * any receiver's applicable license agreements with MediaTek Inc.
 */

#pragma once

#include <vector>
#include <log/log.h>
#include <thread>
#include <utils/Trace.h>
#include <utils/Mutex.h>
#include <mediatek/MtkDuration.h>

namespace android {
// ---------------------------------------------------------------------------
class MtkOverrideDurationConfigs
{
private:
    struct Duration {
        int64_t app;
        int64_t sf;
        int64_t hz;
    };
    std::vector<Duration> mConfigs;
    int64_t mCurrentHz;
    std::mutex mMutex;
    MtkOverrideDurationConfigs() {
        mCurrentHz = 0;
    }

    void updateVsyncConfigs() REQUIRES(mMutex) {
        for(auto& config: mConfigs) {
            if (config.hz == mCurrentHz) {
                MtkDuration::getInstance().setOverrideDuration(config.app, config.sf);
                ALOGD("MtkOverrideDuration: update override duration %" PRId64 ", %" PRId64 ", %" PRId64,
                    config.app, config.sf, config.hz);
                return;
            }
        }
        MtkDuration::getInstance().setOverrideDuration(0, 0);
        ALOGD("MtkOverrideDuration: reset override duration");
    }

public:
    static MtkOverrideDurationConfigs& getInstance() {
        static MtkOverrideDurationConfigs gInstance;
        return gInstance;
    }

    ~MtkOverrideDurationConfigs() {};

    void setVsync(nsecs_t vsync) {
        int64_t newvsync = static_cast<int64_t>(std::round(static_cast<float>(ms2ns(1000))/static_cast<float>(vsync)));
        if (newvsync == mCurrentHz) return;
        std::lock_guard<std::mutex> lock(mMutex);
        mCurrentHz = newvsync;
        ALOGD("MtkOverrideDuration: update vsync %" PRId64, mCurrentHz);
        updateVsyncConfigs();
    }

    bool setOverrideDurationConfigs(int64_t app, int64_t sf, int64_t hz) {
        std::lock_guard<std::mutex> lock(mMutex);
        ALOGD("MtkOverrideDuration: set override duration %" PRId64 ", %" PRId64 ", %" PRId64, app, sf, hz);
        if (hz <= 0) {
            mConfigs.clear();
        } else {
            bool find = false;
            for(auto& config: mConfigs) {
                if (config.hz == hz) {
                    config.app = app;
                    config.sf = sf;
                    find = true;
                    break;
                }
            }
            if (!find) {
                mConfigs.push_back({app, sf, hz});
            }
        }
        updateVsyncConfigs();
        return true;
    }
};
// ---------------------------------------------------------------------------
}; // namespace android