#include <QDebug>
#include <QDir>
#include <QFile>
#include <QNetworkCookie>
#include <QStandardPaths>
#include <qcoreapplication.h>
#include <inttypes.h>
#include <zlib.h>

#include "thr_play.h"
#include "thr_data.h"
#include "util.h"
#include "downloader.h"
#include "record_format.h"
#include "mainwindow.h"

#include "rle.h"


static QImage* _rdpimg2QImage(int w, int h, int bitsPerPixel, bool isCompressed, const uint8_t* dat, uint32_t len) {
    QImage* out;
    switch(bitsPerPixel) {
    case 15:
        if(isCompressed) {
            uint8_t* _dat = reinterpret_cast<uint8_t*>(calloc(1, w*h*2));
            if(!bitmap_decompress1(_dat, w, h, dat, len)) {
                free(_dat);
                return nullptr;
            }
            out = new QImage(_dat, w, h, QImage::Format_RGB555);
            free(_dat);
        }
        else {
            out = new QImage(QImage(dat, w, h, QImage::Format_RGB555).transformed(QMatrix(1.0, 0.0, 0.0, -1.0, 0.0, 0.0)));
        }
        return out;

    case 16:
        if(isCompressed) {
            uint8_t* _dat = reinterpret_cast<uint8_t*>(calloc(1, w*h*2));
            if(!bitmap_decompress2(_dat, w, h, dat, len)) {
                free(_dat);
                qDebug() << "22------------------DECOMPRESS2 failed.";
                return nullptr;
            }

            // TODO: 这里需要进一步优化，直接操作QImage的buffer。
            out = new QImage(w, h, QImage::Format_RGB16);
            for(int y = 0; y < h; y++) {
                for(int x = 0; x < w; x++) {
                    uint16 a = ((uint16*)_dat)[y * w + x];
                    uint8 r = ((a & 0xf800) >> 11) * 255 / 31;
                    uint8 g = ((a & 0x07e0) >> 5) * 255 / 63;
                    uint8 b = (a & 0x001f) * 255 / 31;
                    out->setPixelColor(x, y, QColor(r,g,b));
                }
            }
            free(_dat);
            return out;
        }
        else {
            out = new QImage(QImage(dat, w, h, QImage::Format_RGB16).transformed(QMatrix(1.0, 0.0, 0.0, -1.0, 0.0, 0.0)));
        }
        return out;

    case 24:
    case 32:
    default:
        qDebug() << "--------NOT support " << bitsPerPixel << " bitsPerPix.";
        return nullptr;
    }
}

static QImage* _raw2QImage(int w, int h, const uint8_t* dat, uint32_t len) {
    QImage* out;

    // TODO: 这里需要进一步优化，直接操作QImage的buffer。
    out = new QImage(w, h, QImage::Format_RGB16);
    for(int y = 0; y < h; y++) {
        for(int x = 0; x < w; x++) {
            uint16 a = ((uint16*)dat)[y * w + x];
            uint8 r = ((a & 0xf800) >> 11) * 255 / 31;
            uint8 g = ((a & 0x07e0) >> 5) * 255 / 63;
            uint8 b = (a & 0x001f) * 255 / 31;
            out->setPixelColor(x, y, QColor(r,g,b));
        }
    }
    return out;
}



//=================================================================
// ThrData
//=================================================================

ThrData::ThrData(MainWindow* mainwin, const QString& res) {
    m_mainwin = mainwin;
    m_res = res;
    m_need_download = false;
    m_need_stop = false;
    m_need_restart = false;
    m_wait_restart = false;
    m_need_show_kf = false;

    m_file_idx = 0;
    m_offset = 0;

#ifdef __APPLE__
    m_data_path_base = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
    m_data_path_base += "/tp-record/";
#else
    m_data_path_base = QCoreApplication::applicationDirPath() + "/record";
#endif
    qDebug("data-path-base: %s", m_data_path_base.toStdString().c_str());

    //    qDebug() << "AppConfigLocation:" << QStandardPaths::writableLocation(QStandardPaths::AppConfigLocation);
    //    qDebug() << "AppDataLocation:" << QStandardPaths::writableLocation(QStandardPaths::AppDataLocation);
    //    qDebug() << "AppLocalDataLocation:" << QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation);
    //    qDebug() << "ConfigLocation:" << QStandardPaths::writableLocation(QStandardPaths::ConfigLocation);
    //    qDebug() << "CacheLocation:" << QStandardPaths::writableLocation(QStandardPaths::CacheLocation);
    //    qDebug() << "GenericCacheLocation:" << QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation);

    /*
AppConfigLocation: "C:/Users/apex/AppData/Local/tp-player"
AppDataLocation: "C:/Users/apex/AppData/Roaming/tp-player"
AppLocalDataLocation: "C:/Users/apex/AppData/Local/tp-player"
ConfigLocation: "C:/Users/apex/AppData/Local/tp-player"
CacheLocation: "C:/Users/apex/AppData/Local/tp-player/cache"
GenericCacheLocation: "C:/Users/apex/AppData/Local/cache"
     */
}

ThrData::~ThrData() {
    _clear_data();
}

void ThrData::stop() {
    if(!isRunning())
        return;
    m_need_stop = true;
    wait();
    qDebug("data thread stop() end.");
}

void ThrData::_notify_message(const QString& msg) {
    UpdateData* _msg = new UpdateData(TYPE_MESSAGE);
    _msg->message(msg);
    emit signal_update_data(_msg);
}

void ThrData::_notify_error(const QString& msg) {
    UpdateData* _msg = new UpdateData(TYPE_ERROR);
    _msg->message(msg);
    emit signal_update_data(_msg);
}

void ThrData::run() {
    _run();
    qDebug("ThrData thread run() end.");
}

void ThrData::_run() {

    QString _tmp_res = m_res.toLower();
    if(_tmp_res.startsWith("http")) {
        m_need_download = true;
        _notify_message(LOCAL8BIT("正在准备录像数据，请稍候..."));

        if(!m_thr_download.init(m_data_path_base, m_res)) {
            _notify_error(QString("%1\n\n%2").arg(LOCAL8BIT("无法下载录像文件！\n\n"), m_res));
            return;
        }

        m_thr_download.start();
        msleep(100);

        for(;;) {
            if(m_need_stop)
                return;
            if(!m_thr_download.is_running() || m_thr_download.is_tpk_downloaded())
                break;
            msleep(100);
        }

        if(!m_thr_download.is_tpk_downloaded()) {
            _notify_error(QString("%1\n%2").arg(LOCAL8BIT("无法下载录像文件！"), m_res));
            return;
        }

        m_thr_download.get_data_path(m_data_path);
    }
    else {
        QFileInfo fi_chk_link(m_res);
        if(fi_chk_link.isSymLink())
            m_res = fi_chk_link.symLinkTarget();

        QFileInfo fi(m_res);
        if(!fi.exists()) {
            _notify_error(QString("%1\n\n%2").arg(LOCAL8BIT("指定的文件或目录不存在！"), m_res));
            return;
        }

        if(fi.isFile()) {
            m_data_path = fi.path();
        }
        else if(fi.isDir()) {
            m_data_path = m_res;
        }

        m_data_path = QDir::toNativeSeparators(m_data_path);
    }

    // 到这里，.tpr和.tpk文件均已经下载完成了。

    if(!_load_header())
        return;

    if(!_load_keyframe())
        return;


    UpdateData* dat = new UpdateData(m_hdr);
    emit signal_update_data(dat);


    QFile* fdata = nullptr;
    qint64 file_size = 0;
    qint64 file_processed = 0;
    qint64 read_len = 0;
    QString str_fidx;

    for(;;) {
        // 任何时候确保第一时间响应退出操作
        if(m_need_stop)
            return;

        if(m_need_restart) {
            if(fdata) {
                fdata->close();
                delete fdata;
                fdata = nullptr;
            }

            m_wait_restart = true;
            msleep(50);
            continue;
        }

        // 如果所有文件都已经处理完了，则等待（可能用户会拖动滚动条，或者重新播放）
        if(m_file_idx >= m_hdr.info.dat_file_count) {
            msleep(500);
            continue;
        }

        // 看看待播放队列中还有多少个数据包
        int pkg_count_in_queue = 0;
        int pkg_need_add = 0;

        m_locker.lock();
        pkg_count_in_queue = m_data.size();
        m_locker.unlock();

        // 少于1000个的话，补足到2000个
        if(m_data.size() < 1000)
            pkg_need_add = 2000 - pkg_count_in_queue;

        if(pkg_need_add == 0) {
            msleep(100);
            continue;
        }

        for(int i = 0; i < pkg_need_add; ++i) {
            if(m_need_stop)
                return;
            if(m_need_restart)
                break;

            // 如果数据文件尚未打开，则打开它
            if(fdata == nullptr) {
                str_fidx.sprintf("%d", m_file_idx+1);
                QString tpd_fname = QString("%1/tp-rdp-%2.tpd").arg(m_data_path, str_fidx);
                tpd_fname = QDir::toNativeSeparators(tpd_fname);

                QFileInfo fi_tpd(tpd_fname);
                if(!fi_tpd.exists()) {
                    if(m_need_download) {
                        // 此文件尚未下载完成，等待
                        for(;;) {
                            if(m_need_stop)
                                return;
                            if(!m_thr_download.is_running() || m_thr_download.is_tpd_downloaded(m_file_idx))
                                break;
                            msleep(100);
                        }

                        // 下载失败了
                        if(!m_thr_download.is_tpd_downloaded(m_file_idx))
                            return;
                    }
                }

                fdata = new QFile(tpd_fname);
                if(!fdata->open(QFile::ReadOnly)) {
                    qDebug() << "Can not open " << tpd_fname << " for read.";
                    _notify_error(QString("%1\n\n%2").arg(LOCAL8BIT("无法打开录像数据文件！"), tpd_fname));
                    return;
                }

                file_size = fdata->size();
                file_processed = 0;
                qDebug("Open file tp-rdp-%d.tpd, processed: %" PRId64 ", size: %" PRId64, m_file_idx+1, file_processed, file_size);
            }

            // 如果指定了起始偏移，则跳过这部分数据
            if(m_offset > 0) {
                fdata->seek(m_offset);
                file_processed = m_offset;
                m_offset = 0;
            }

            //----------------------------------
            // 读取一个数据包
            //----------------------------------
            if(file_size - file_processed < sizeof(TS_RECORD_PKG)) {
                qDebug("invaid tp-rdp-%d.tpd file, filesize=%" PRId64 ", processed=%" PRId64 ", need=%d.", m_file_idx+1, file_size, file_processed, sizeof(TS_RECORD_PKG));
                _notify_error(QString("%1\ntp-rdp-%2.tpd").arg(LOCAL8BIT("错误的录像数据文件！"), str_fidx));
                return;
            }

            TS_RECORD_PKG pkg;
            read_len = fdata->read(reinterpret_cast<char*>(&pkg), sizeof(TS_RECORD_PKG));
            if(read_len != sizeof(TS_RECORD_PKG)) {
                qDebug("invaid tp-rdp-%d.tpd file, read_len=%" PRId64 " (1).", m_file_idx+1, read_len);
                _notify_error(QString("%1\ntp-rdp-%2.tpd").arg(LOCAL8BIT("错误的录像数据文件！"), str_fidx));
                return;
            }
            file_processed += sizeof(TS_RECORD_PKG);

            if(file_size - file_processed < pkg.size) {
                qDebug("invaid tp-rdp-%d.tpd file (2).", m_file_idx+1);
                _notify_error(QString("%1\ntp-rdp-%2.tpd").arg(LOCAL8BIT("错误的录像数据文件！"), str_fidx));
                return;
            }

            if(pkg.size == 0) {
                qDebug("################## too bad.");
            }

            QByteArray pkg_data = fdata->read(pkg.size);
            if(pkg_data.size() != static_cast<int>(pkg.size)) {
                qDebug("invaid tp-rdp-%d.tpd file, read_len=%" PRId64 " (3).", m_file_idx+1, read_len);
                _notify_error(QString("%1\ntp-rdp-%2.tpd").arg(LOCAL8BIT("错误的录像数据文件！"), str_fidx));
                return;
            }
            file_processed += pkg.size;

            UpdateData* dat = _parse(pkg, pkg_data);
            if(dat == nullptr) {
                qDebug("invaid tp-rdp-%d.tpd file (4).", m_file_idx+1);
                _notify_error(QString("%1\ntp-rdp-%2.tpd").arg(LOCAL8BIT("错误的录像数据文件！"), str_fidx));
                return;
            }

            // 遇到关键帧，需要清除自上一个关键帧以来保存的缓存图像数据
            if(pkg.type == TS_RECORD_TYPE_RDP_KEYFRAME) {
                for(size_t ci = 0; ci < m_cache_imgs.size(); ++ci) {
                    if(m_cache_imgs[ci] != nullptr)
                        delete m_cache_imgs[ci];
                }
                m_cache_imgs.clear();
            }

            // 拖动滚动条后，需要显示一次关键帧数据，然后跳过后续关键帧。
            if(pkg.type == TS_RECORD_TYPE_RDP_KEYFRAME) {
                qDebug("----key frame: %ld, processed=%" PRId64 ", pkg.size=%d", pkg.time_ms, file_processed, pkg.size);
                if(m_need_show_kf) {
                    m_need_show_kf = false;
                    qDebug("++ show keyframe.");
                }
                else {
                    qDebug("-- skip keyframe.");
                    delete dat;
                    dat = nullptr;
                }
            }

            // 数据放到待播放列表中
            if(dat) {
                m_locker.lock();
                m_data.enqueue(dat);
                m_locker.unlock();
            }

            // 让线程调度器让播放线程有机会执行
//            msleep(1);

            // 如果此文件已经处理完毕，则关闭文件，这样下次处理一个新的文件
            if(file_processed >= file_size) {
                fdata->close();
                delete fdata;
                fdata = nullptr;
                m_file_idx++;
            }

            if(m_file_idx >= m_hdr.info.dat_file_count) {
                UpdateData* dat = new UpdateData(TYPE_END);
                m_locker.lock();
                m_data.enqueue(dat);
                m_locker.unlock();
                break;
            }
        }
    }
}

UpdateData* ThrData::_parse(const TS_RECORD_PKG& pkg, const QByteArray& data) {
    if(pkg.type == TS_RECORD_TYPE_RDP_POINTER) {
        if(data.size() != sizeof(TS_RECORD_RDP_POINTER))
            return nullptr;

        UpdateData* ud = new UpdateData();
        ud->set_pointer(pkg.time_ms, reinterpret_cast<const TS_RECORD_RDP_POINTER*>(data.data()));
        return ud;
    }
    else if(pkg.type == TS_RECORD_TYPE_RDP_IMAGE) {
        UpdateData* ud = new UpdateData(TYPE_IMAGE, pkg.time_ms);

        if(data.size() < static_cast<int>(sizeof(uint16_t) + sizeof(TS_RECORD_RDP_IMAGE_INFO))) {
            delete ud;
            return nullptr;
        }

        const uint8_t* dat_ptr = reinterpret_cast<const uint8_t*>(data.data());

        uint16_t count = (reinterpret_cast<const uint16_t*>(dat_ptr))[0];
        uint32_t offset = sizeof(uint16_t);

        UpdateImages& imgs = ud->get_images();

        for(uint16_t i = 0; i < count; ++i) {

            const TS_RECORD_RDP_IMAGE_INFO* info = reinterpret_cast<const TS_RECORD_RDP_IMAGE_INFO*>(dat_ptr+offset);
            offset += sizeof(TS_RECORD_RDP_IMAGE_INFO);

            if(info->format != TS_RDP_IMG_ALT) {
                const uint8_t* img_dat = dat_ptr + offset;

                const uint8_t* real_img_dat = nullptr;
                QByteArray unzip_data;
                if(info->zip_len > 0) {
                    // 数据被压缩了，需要解压缩
                    unzip_data.resize(static_cast<int>(info->dat_len));

                    uLong u_len = info->dat_len;
                    int err = uncompress(reinterpret_cast<uint8_t*>(unzip_data.data()), &u_len, img_dat, info->zip_len);
                    if(err != Z_OK || u_len != info->dat_len) {
                        qDebug("image uncompress failed. err=%d.", err);
                    }
                    else {
                        real_img_dat =  reinterpret_cast<const uint8_t*>(unzip_data.data());
                    }

                    offset += info->zip_len;
                }
                else {
                    real_img_dat = img_dat;
                    offset += info->dat_len;
                }


                UPDATE_IMAGE uimg;
                uimg.x = info->destLeft;
                uimg.y = info->destTop;
                uimg.w = info->destRight - info->destLeft + 1;
                uimg.h = info->destBottom - info->destTop + 1;
                if(real_img_dat)
                    uimg.img = _rdpimg2QImage(info->width, info->height, info->bitsPerPixel, (info->format == TS_RDP_IMG_BMP) ? true : false, real_img_dat, info->dat_len);
                else
                    uimg.img = nullptr;
                imgs.push_back(uimg);

                QImage* cache_img = nullptr;
                if(uimg.img != nullptr)
                    cache_img = new QImage(*uimg.img);

                m_cache_imgs.push_back(cache_img);
            }
            else {
                UPDATE_IMAGE uimg;
                uimg.x = info->destLeft;
                uimg.y = info->destTop;
                uimg.w = info->destRight - info->destLeft + 1;
                uimg.h = info->destBottom - info->destTop + 1;

                size_t cache_idx = info->dat_len;

                if(cache_idx >= m_cache_imgs.size() || m_cache_imgs[cache_idx] == nullptr) {
                    uimg.img = nullptr;
                }
                else {
                    uimg.img = new QImage(*m_cache_imgs[cache_idx]);
                }
                imgs.push_back(uimg);
            }
        }

        return ud;
    }
    else if(pkg.type == TS_RECORD_TYPE_RDP_KEYFRAME) {
        UpdateData* ud = new UpdateData(TYPE_IMAGE, pkg.time_ms);
        const TS_RECORD_RDP_KEYFRAME_INFO* info = reinterpret_cast<const TS_RECORD_RDP_KEYFRAME_INFO*>(data.data());
        const uint8_t* data_buf = reinterpret_cast<const uint8_t*>(data.data() + sizeof(TS_RECORD_RDP_KEYFRAME_INFO));
        uint32_t data_len = data.size() - sizeof(TS_RECORD_RDP_KEYFRAME_INFO);

        UpdateImages& imgs = ud->get_images();

        UPDATE_IMAGE uimg;
        uimg.x = 0;
        uimg.y = 0;
        uimg.w = m_hdr.basic.width;
        uimg.h = m_hdr.basic.height;

        const uint8_t* real_img_dat = nullptr;
        uint32_t real_img_len = m_hdr.basic.width * m_hdr.basic.height * 2;

        QByteArray unzip_data;
        if(data_len != real_img_len) {
            // 数据被压缩了，需要解压缩
            unzip_data.resize(static_cast<int>(real_img_len));

            uLong u_len = real_img_len;
            int err = uncompress(reinterpret_cast<uint8_t*>(unzip_data.data()), &u_len, data_buf, data_len);
            if(err != Z_OK || u_len != real_img_len) {
                qDebug("keyframe uncompress failed. err=%d.", err);
            }
            else {
                real_img_dat =  reinterpret_cast<const uint8_t*>(unzip_data.data());
            }
        }
        else {
            real_img_dat = data_buf;
        }

        if(real_img_dat != nullptr)
            uimg.img = _raw2QImage(m_hdr.basic.width, m_hdr.basic.height, real_img_dat, real_img_len);
        else
            uimg.img = nullptr;
        imgs.push_back(uimg);

        return ud;
    }

    return nullptr;
}


void ThrData::restart(uint32_t start_ms) {
    qDebug("restart at %ld ms", start_ms);
    // 让处理线程处理完当前循环，然后等待
    m_need_restart = true;

    // 确保处理线程已经处理完当前循环
    for(;;) {
        msleep(50);
        if(m_need_stop)
            return;
        if(m_wait_restart)
            break;
    }

    // 清空待播放队列
    _clear_data();

    if(start_ms == 0) {
        m_offset = 0;
        m_file_idx = 0;
        m_need_show_kf = false;
    }
    else {
        // 找到最接近 start_ms 但小于它的关键帧
        size_t i = 0;
        for(i = 0; i < m_kf.size(); ++i) {
            if(m_kf[i].time_ms > start_ms) {
                break;
            }
        }
        if(i > 0)
            i--;

        qDebug("restart acturelly at %ld ms, kf: %d", m_kf[i].time_ms, i);

        // 指定要播放的数据的开始位置
        m_offset = m_kf[i].offset;
        m_file_idx = m_kf[i].file_index;
        if(m_file_idx == (uint32_t)-1)
            m_file_idx = 0;
        m_need_show_kf = true;
    }

    qDebug("RESTART: offset=%d, file_idx=%d", m_offset, m_file_idx);

    // 让处理线程继续
    m_wait_restart = false;
    m_need_restart = false;
}

bool ThrData::_load_header() {
    QString msg;
    qDebug() << "PATH_BASE: " << m_data_path;

    QString filename = QString("%1/tp-rdp.tpr").arg(m_data_path);
    filename = QDir::toNativeSeparators(filename);
    qDebug() << "TPR: " << filename;

    QFile f(filename);
    if(!f.open(QFile::ReadOnly)) {
        qDebug() << "Can not open " << filename << " for read.";
        _notify_error(QString("%1\n\n%2").arg(LOCAL8BIT("无法打开录像信息文件！"), filename));
        return false;
    }

    memset(&m_hdr, 0, sizeof(TS_RECORD_HEADER));

    qint64 read_len = 0;
    read_len = f.read(reinterpret_cast<char*>(&m_hdr), sizeof(TS_RECORD_HEADER));
    if(read_len != sizeof(TS_RECORD_HEADER)) {
        qDebug() << "invaid .tpr file.";
        _notify_error(QString("%1\n\n%2").arg(LOCAL8BIT("错误的录像信息文件！"), filename));
        return false;
    }

    if(m_hdr.info.ver != 4) {
        qDebug() << "invaid .tpr file.";
        _notify_error(QString("%1 %2%3").arg(LOCAL8BIT("不支持的录像文件版本 "), QString(m_hdr.info.ver), LOCAL8BIT("！\n\n此播放器支持录像文件版本 4。")));
        return false;
    }

    if(m_hdr.basic.width == 0 || m_hdr.basic.height == 0) {
        _notify_error(LOCAL8BIT("错误的录像信息，未记录窗口尺寸！"));
        return false;
    }

    if(m_hdr.info.dat_file_count == 0) {
        _notify_error(LOCAL8BIT("错误的录像信息，未记录数据文件数量！"));
        return false;
    }

    return true;
}

bool ThrData::_load_keyframe() {
    QString tpk_fname = QString("%1/tp-rdp.tpk").arg(m_data_path);
    tpk_fname = QDir::toNativeSeparators(tpk_fname);

    qDebug() << "TPK: " << tpk_fname;

    QFile f_kf(tpk_fname);
    if(!f_kf.open(QFile::ReadOnly)) {
        qDebug() << "Can not open " << tpk_fname << " for read.";
        _notify_error(QString("%1\n\n%3").arg(LOCAL8BIT("无法打开关键帧信息文件！"), tpk_fname));
        return false;
    }

    qint64 fsize = f_kf.size();
    if(!fsize || fsize % sizeof(TS_RECORD_RDP_KEYFRAME_INFO) != 0) {
        qDebug() << "Can not open " << tpk_fname << " for read.";
        _notify_error(LOCAL8BIT("关键帧信息文件格式错误！"));
        return false;
    }

    qint64 read_len = 0;
    int kf_count = static_cast<int>(fsize / sizeof(TS_RECORD_RDP_KEYFRAME_INFO));
    for(int i = 0; i < kf_count; ++i) {
        TS_RECORD_RDP_KEYFRAME_INFO kf;
        memset(&kf, 0, sizeof(TS_RECORD_RDP_KEYFRAME_INFO));
        read_len = f_kf.read(reinterpret_cast<char*>(&kf), sizeof(TS_RECORD_RDP_KEYFRAME_INFO));
        if(read_len != sizeof(TS_RECORD_RDP_KEYFRAME_INFO)) {
            qDebug() << "invaid .tpk file.";
            _notify_error(LOCAL8BIT("关键帧信息文件格式错误！"));
            return false;
        }

        m_kf.push_back(kf);
    }

    return true;
}

UpdateData* ThrData::get_data() {
    UpdateData* d = nullptr;

    m_locker.lock();
    if(m_data.size() > 0) {
        d = m_data.dequeue();
    }
    m_locker.unlock();

    return d;
}

void ThrData::_clear_data() {
    m_locker.lock();
    while(m_data.size() > 0) {
        UpdateData* d = m_data.dequeue();
        delete d;
    }
    m_locker.unlock();
}