QT 创建一个线程播放监控视频

1.创建一个线程类(PlayVideoThread)：

PlayVideoThread.h头文件

#pragma once

#include <QObject>

#include "DataDefine.h"

#include "hi_sdk_api.h"

class PlayVideoThread : public QObject

{

    Q_OBJECT

public:

    PlayVideoThread();

    ~PlayVideoThread();

    void setParam(VIDEO_CHANNEL ch, int win);

public slots:

    void doWork();

signals:

    void sglOnMessage(VIDEO_STATUS_EVENT event, QString msg);

signals:

    void sglSendHandle(HI_HANDLE loginHandle, HI_S32 play);

private:

    VIDEO_CHANNEL m_Ch;

    int m_Win;

    HI_HANDLE m_lLoginHandle;

    HI_S32 m_lPlay;

};

PlayVideoThread.cpp源文件

#include "PlayVideoThread.h"

PlayVideoThread::PlayVideoThread()

{

}

PlayVideoThread::~PlayVideoThread()

{

}

void PlayVideoThread::setParam(VIDEO_CHANNEL ch, int win)

{

    m_Ch = ch;

    m_Win = win;

}

void PlayVideoThread::doWork()

{

    HI_S32 err;

    /* 成功将返回 HI_HANDLE 句柄，失败返回 0 */

    m_lLoginHandle = HI_SDK_Login(m_Ch.device.ip.toStdString().c_str(), m_Ch.device.user.toStdString().c_str(), m_Ch.device.password.toStdString().c_str(), m_Ch.device.port, &err);

    emit sglOnMessage(m_lLoginHandle ==  ? E_LOGIN_FAILURE : E_LOGIN_SUCCESS, "login err");

    emit sglOnMessage(E_DEBUG_LOG, m_lLoginHandle ==  ? "login err" : "login success");

    HI_S_STREAM_INFO info;

    info.u32Channel = HI_CHANNEL_1;

    info.blFlag = HI_TRUE;

    info.u32Mode = HI_STREAM_MODE_TCP;

    info.u8Type = HI_STREAM_ALL;

    /* 成功返回 #define HI_SUCCESS  0 ，失败返回错误代码。*/

    m_lPlay = HI_SDK_RealPlay(m_lLoginHandle, (HI_VOID*)m_Win, &info);

    emit sglOnMessage(m_lPlay !=  ? E_REALPLAY_FAILURE : E_REALPLAY_SUCCESS, "play err");

    emit sglOnMessage(E_DEBUG_LOG, m_lPlay ==  ? "play err" : "play success");

    //登录并播放成功后发送句柄

    emit sglSendHandle(m_lLoginHandle, m_lPlay);

}

2.调用这个线程类：

LZYVideo.h头文件

#pragma once

#include <BaseVideo.h>

#include "PlayVideoThread.h"

#include "hi_sdk_api.h"

#include <QThread>

class LZYVideo : public BaseVideo

{

    Q_OBJECT

public:

    LZYVideo(QObject *parent=);

    ~LZYVideo();

    int startRealPlay(VIDEO_CHANNEL ch, int win) ;

    int stopRealPlay() ;private:

    HI_HANDLE m_lLoginHandle;

    HI_S32 m_lPlay;

    VIDEO_CHANNEL m_VideoChannel;

    PlayVideoThread* m_pPlayWorker;

    QThread* m_pPlayWorkerThread;

private:

    void createThreadForPlayVideo(VIDEO_CHANNEL ch, int win);

    void destroyThreadForPlayVideo();

private slots:

    void sltGetHandle(HI_HANDLE loginHandle, HI_S32 play);

};

LZYVideo.cpp源文件

 

#include "LZYVideo.h"

void LZYVideo::createThreadForPlayVideo(VIDEO_CHANNEL ch, int win)   //创建线程

{

    destroyThreadForPlayVideo();

    m_pPlayWorker = new PlayVideoThread;

    m_pPlayWorker->setParam(ch, win);

    m_pPlayWorkerThread = new QThread(this);

    m_pPlayWorker->moveToThread(m_pPlayWorkerThread);

    connect(m_pPlayWorkerThread, SIGNAL(finished()), m_pPlayWorkerThread, SLOT(deleteLater()));

    connect(m_pPlayWorkerThread, SIGNAL(finished()), m_pPlayWorker, SLOT(deleteLater()));

    connect(m_pPlayWorkerThread, SIGNAL(started()), m_pPlayWorker, SLOT(doWork()));

    connect(m_pPlayWorker, SIGNAL(sglOnMessage(VIDEO_STATUS_EVENT, QString)), this, SIGNAL(sglOnMessage(VIDEO_STATUS_EVENT, QString)));

    connect(m_pPlayWorker, SIGNAL(sglSendHandle(HI_HANDLE, HI_S32)), this, SLOT(sltGetHandle(HI_HANDLE, HI_S32)));

    m_pPlayWorkerThread->start();

}

void LZYVideo::destroyThreadForPlayVideo()

{

    if (m_pPlayWorkerThread && m_pPlayWorkerThread->isRunning())

    {

        m_pPlayWorkerThread->exit();

        m_pPlayWorkerThread->wait();

        m_pPlayWorkerThread->deleteLater();

        m_pPlayWorkerThread = NULL;

    }

}

int LZYVideo::startRealPlay(VIDEO_CHANNEL ch, int win)

{

    m_VideoChannel = ch;

    stopRealPlay();

    createThreadForPlayVideo(ch, win);   //创建一个线程播放视频

    return ;

}

void LZYVideo::sltGetHandle(HI_HANDLE loginHandle, HI_S32 play)

{

    m_lLoginHandle = loginHandle;

    m_lPlay = play;

    destroyThreadForPlayVideo();

}

插入的代码框都不能删掉。。。服了