EasyPlayerPro(Windows)开发之跨语言调用

来源：互联网发布：mathematica 11.1 mac 编辑：程序博客网时间：2024/05/16 05:23

下面我们来讲解一下关于EasyPlayerPro接口的调用，主要分为C++和C#两种语言，C++也可以基于VC和QT进行开发，C++以VC MFC框架为例进行讲解，C#以Winform框架为例进行讲解。

VC开发EasyPlayerPro
首先建一个基于MFC Dialog的工程，取名叫EasyPlayerPro，关于界面逻辑的处理过程就不做过多赘述了，大家有兴趣的可以去看EasyPlayerPro项目代码；下面我们讲解一下EasyPlayerPro的调用流程：
(1) 打开一个流或文件进行播放
通过EasyPlayerPro_Open打开一个流或者本地文件，打开以后即播放，不需要调用EasyPlayerPro_Play方法，调用完成后，注意，比如拉网络流的时候，由于Open函数是非阻塞而立即返回的，所以，播放过程可能尚未初始化完成，从而获取流的信息可能获取不到，正确的做法是在线程或者计时器里面轮询获取；Open完成后，我们可以对一些参数进行设置，比如设置OSD和图片叠加，显示模式，音量大小等：

    // player open file    m_player = EasyPlayerPro_Open(str, m_stcVideoWnd->GetSafeHwnd());    if (m_player)    {        m_bPlayPause = FALSE;        SetTimer(TIMER_ID_PROGRESS, 1000, NULL);        m_bOpening = TRUE;        //字幕和图片叠加        //        //  EasyPlayerPro_SetLogo  设置台标/LOGO        //      player              - 指向 EasyPlayerPro_Open 返回的 player 对象        //      bIsUse              - 是否使用水印 1=启用 0=不启用        //      ePos                - 台标位置：1==leftttop 2==righttop 3==leftbottom 4==rightbottom        //      eStyle              -  水印的风格，见WATERMARK_ENTRY_TYPE声明        //      x                   - 水印左上角位置x坐标        //      y                   - 水印左上角位置y坐标        //      width               - 宽        //      height              - 高        //      logopath            - 水印图片路径        EasyPlayerPro_SetLogo (m_player, 1, 2, 3,             0, 0, 0, 0, "C:\\Dingshuai\\Project\\Easylogo.png");        //  EasyPlayerPro_SetOSD  设置叠加字幕        //      player              - 指向 EasyPlayerPro_Open 返回的 player 对象        //      bIsUse              - 是否使用水印 1=启用 0=不启用 -1=删除        //      nMoveType           - 移动类型：0--固定位置，1--从左往右，2--从右往左，        //      R,G,B               - 字体颜色对应三个分量红绿蓝0-255        //      x                   - 字幕显示左上角位置x坐标        //      y                   - 字幕显示左上角位置y坐标        //      weight              - 字体权重，见如下声明        // /* Font Weights */        // #define FW_DONTCARE         0        // #define FW_THIN             100        // #define FW_EXTRALIGHT       200        // #define FW_LIGHT            300        // #define FW_NORMAL           400        // #define FW_MEDIUM           500        // #define FW_SEMIBOLD         600        // #define FW_BOLD             700        // #define FW_EXTRABOLD        800        // #define FW_HEAVY            900        // #define FW_ULTRALIGHT       FW_EXTRALIGHT        // #define FW_REGULAR          FW_NORMAL        // #define FW_DEMIBOLD         FW_SEMIBOLD        // #define FW_ULTRABOLD        FW_EXTRABOLD        // #define FW_BLACK            FW_HEA        //      width               - 宽        //      height              - 高        //      fontname            - 字体名称，如“宋体”“楷体”“隶书”“华文行楷”......        //      tittleContent       - OSD显示内容        EasyPlayerPro_SetOSD (m_player, 1, 1, 0, 255, 0,            700, 100, 200, 0, -29, "隶书", "你说你爱了不该爱的人，你的心中满是伤痕！");    }

(2) 暂停和单步播放

void CplayerDlg::OnBnClickedBtnPause(){    // TODO: 在此添加控件通知处理程序代码    if (!m_bPlayPause) EasyPlayerPro_Pause(m_player);    else EasyPlayerPro_Play(m_player);    m_bPlayPause = !m_bPlayPause;    CSkinButton* pBtn = (CSkinButton*)GetItemByName(_T("Pause"));    if(pBtn)    {        if (m_bPlayPause)        {            pBtn->SetBtnText(_T("播放"));        }           else        {            pBtn->SetBtnText(_T("暂停"));        }    }}void CplayerDlg::OnBnClickedBtnPlayByFrame(){    // TODO: 在此添加控件通知处理程序代码    //     EasyPlayerPro_StepPlay(m_player);    m_bPlayPause = TRUE;    CSkinButton* pBtn = (CSkinButton*)GetItemByName(_T("Pause"));    if(pBtn)    {        if (m_bPlayPause)        {            pBtn->SetBtnText(_T("播放"));        }           else        {            pBtn->SetBtnText(_T("暂停"));        }    }}

这里直接调用即可，不做过多赘述。

(3) 快放和慢放

void CplayerDlg::OnBnClickedBtnRatePlay(){    int nRate = 0;    switch(m_speedRate)    {    case    SPEED_SLOW_X4:        nRate = 25;        break;    case    SPEED_SLOW_X2:        nRate = 50;        break;    case    SPEED_NORMAL:           nRate = 100;        break;    case    SPEED_FAST_X2:        nRate = 200;        break;    case    SPEED_FAST_X4:        nRate = 300;        break;    case    SPEED_FAST_X8:        nRate = 400;        break;    case    SPEED_FAST_X16:        nRate = 500;        break;    case    SPEED_FAST_X64:        nRate = 600;        break;    }    EasyPlayerPro_Setparam(m_player, EASY_PARAM_PLAY_SPEED, &nRate);}

目前定义慢放范围为2倍和4倍，快放范围为2，4，8，16，64倍，超过这个范围则无明显反应或者意义。

(4) 抓图接口调用

void CplayerDlg::OnBnClickedBtnSnapshot(){    // TODO: 在此添加控件通知处理程序代码    //     TCHAR sPath[512];    memset(sPath, 0x00, sizeof(TCHAR) * 512);    GetWorkDirectory(sPath, 512);    int nPathLen = _tcslen(sPath);    if ((sPath[nPathLen - 1] != '/' && sPath[nPathLen - 1] != '\\'))    {        sPath[nPathLen] = '\\';    }    unsigned int timestamp = (unsigned int)time(NULL);    time_t tt = timestamp;    struct tm _time;    ::localtime_s(&_time, &tt);    char szTime[64] = { 0, };    strftime(szTime, 32, "\\pic_%Y%m%d%H%M%S.jpg", &_time);    CString strTime = (CString)szTime;    CString sScreenPath = _T("");    sScreenPath.Format(_T("%s%s"), sPath, _T("ScreenShot"));    bool bSec = EnsureDirExist(sScreenPath);    sScreenPath += strTime;    USES_CONVERSION;    EasyPlayerPro_Snapshot(m_player, T2A(sScreenPath), 0, 0, 1000);}

抓图接口直接调用即可，注意保存的路径需要存在，否则，抓图保存将会失败。

(5) 录像接口调用

void CplayerDlg::OnBnClickedBtnRecord(){    // TODO: 在此添加控件通知处理程序代码    if(!m_player)        return ;    CSkinButton* pBtn = (CSkinButton*)GetItemByName(_T("Record"));    if (!pBtn)    {        return;    }    if (!m_bRecording)    {        pBtn->SetBtnText(_T("停止录像"));        TCHAR sPath[512];        memset(sPath, 0x00, sizeof(TCHAR)*512);        GetWorkDirectory(sPath, 512);        int nRecordPathLen = _tcslen(sPath);        if ((sPath[nRecordPathLen - 1] != '/' && sPath[nRecordPathLen - 1] != '\\'))        {            sPath[nRecordPathLen] = '\\';        }        unsigned int timestamp = (unsigned int)time(NULL);        time_t tt = timestamp;        struct tm _time;        ::localtime_s(&_time, &tt);        char szTime[64] = { 0, };        strftime(szTime, 32, "\\record_%Y%m%d%H%M%S.mp4", &_time);        CString strTime = (CString)szTime;        CString sRecordPath = _T("");        sRecordPath.Format(_T("%s%s"), sPath, _T("Record"));        bool bSec = EnsureDirExist(sRecordPath);        sRecordPath += strTime;        UpdateData(TRUE);        CString sRecDuration = _T("");        if(m_editRecPieceTime)            m_editRecPieceTime->GetWindowText(sRecDuration);        int nDuration =  _ttoi( sRecDuration.GetBuffer());        //m_SNPlayOcx.EasyPlayPro_PlayOcx_Record(sRecordPath, m_sRtspUrl, nDuration);        //m_SNPlayOcx.EasyPlayPro_PlayOcx_Record(_T("D:\\test.mp4"), m_sRtspUrl);        USES_CONVERSION;        EasyPlayerPro_Record(m_player, T2A(sRecordPath), nDuration);        m_lRecordTime = 0;//IDC_STATIC_RECORD_STATUS        SetTimer(TIMER_RECORD_STATUS, 300, NULL);    }     else    {        pBtn->SetBtnText(_T("录像"));        EasyPlayerPro_Stoprecord(m_player);        KillTimer(TIMER_RECORD_STATUS);        EasyPlayerPro_Getparam(m_player, EASY_PARAM_RECORD_TIME, &m_lRecordTime);        EasyPlayerPro_Getparam(m_player, EASY_PARAM_RECORD_PIECE_ID, &m_lRecordSliceUp);        int thh, tmm, tss = 0;        thh = m_lRecordTime / 3600;        tmm = (m_lRecordTime % 3600) / 60;        tss = (m_lRecordTime % 60);        CString sShowRec = _T("");        if (m_lRecordSliceUp > -1)            sShowRec.Format(_T("录像已停止 录制时间：%02d:%02d:%02d  切片ID：%d"), thh, tmm, tss, m_lRecordSliceUp);        else            sShowRec.Format(_T("录像已停止 录制时间：%02d:%02d:%02d"), thh, tmm, tss);        SetString(4, sShowRec);        m_lRecordTime = 0;//IDC_STATIC_RECORD_STATUS    }    m_bRecording = !m_bRecording;}

EasyPlayPro_PlayOcx_Record接口调用进行录像，EasyPlayerPro_Stoprecord接口调用停止录像，EasyPlayerPro_Getparam接口获取录像的时间和当前录像的PieceId, 具体参数见上一篇文章EasyPlayerPro接口说明。

(6) 本地文件和点播拖拽

 a. 进度显示计时

    case TIMER_ID_PROGRESS://进度条计时器        {#if 1            if (m_totalDuration <= 0)            {                LONGLONG ltotal = 0;                EasyPlayerPro_Getparam(m_player, EASY_PARAM_MEDIA_DURATION, &ltotal);                if (ltotal>1)                {                    m_totalDuration = ltotal/1000;                    int totalSeconds = (int)m_totalDuration;                    int gTotalSeconds = totalSeconds;                    int gTotalMinute = (int)(totalSeconds / 60);                    int nTotalHour = (int)(gTotalMinute / 60);  //时                    int nTotalMinute = (int)(gTotalMinute % 60);//分                    int totalSecond = (int)(totalSeconds % 60); //秒                    m_strPlayFileTime.Format(_T("%02d:%02d:%02d"), nTotalHour, nTotalMinute, totalSecond);                    if (m_sliderPlay)                    {                        m_sliderPlay->SetRange(0, m_totalDuration);                        m_sliderPlay->SetPos(0);                                        }                                           m_sliderPlay->EnableWindow(TRUE);                }            }            LONGLONG llCurPos   = 0;                LONGLONG llPos  = 0;                EasyPlayerPro_Getparam(m_player, EASY_PARAM_MEDIA_POSITION, &llPos);            llCurPos = llPos/1000;            TRACE("Position == %d\r\n",llCurPos);            int totalSeconds = (int)llCurPos;            int gTotalSeconds = totalSeconds;            int gTotalMinute = (int)(totalSeconds / 60);            int nTotalHour = (int)(gTotalMinute / 60);  //时            int nTotalMinute = (int)(gTotalMinute % 60);//分            int totalSecond = (int)(totalSeconds % 60); //秒            CString strTemp = _T("");            if (m_totalDuration>0  )            {                if (llCurPos<m_totalDuration)                {                    strTemp.Format(_T("%02d:%02d:%02d/%s"), nTotalHour, nTotalMinute, totalSecond, m_strPlayFileTime);                    if (m_sliderPlay)                    {                        m_sliderPlay->SetPos(llCurPos);                    }                }                 else                {#if 0                    KillTimer(TIMER_ID_PROGRESS);                    PlayerCloseFile();                    SetString(2,_T(""));                    m_totalDuration = -1;                    m_sliderPlay->SetRange(0, 2000);                    m_sliderPlay->SetPos(0);                        m_speedRate = 0;#endif                    OnBnClickedBtnClose();                    strTemp = _T("");                }            }            else                strTemp.Format(_T("%02d:%02d:%02d/../../.."), nTotalHour, nTotalMinute, totalSecond);            SetString(2,strTemp);#endif        }        break;

b. 拖拽进度条OnHScroll消息处理

    if (m_sliderPlay==pSliderTmp)    {        if (nSBCode == 5)        {            int nPos = m_sliderPlay->GetPos();            TRACE("nPos==%d\r\n", nPos);            //如果处于断点循环#if 0               if (m_bLoopAB)            {                if(nPos<m_dbBreakPtA || nPos>m_dbBreakPtB)                {                       nPos = m_dbBreakPtA;                }            }#endif            if (m_totalDuration>0)            {                                       EasyPlayerPro_Seek(m_player, nPos*1000);            }        }    }

c. 音量调节进度条OnHScroll消息处理

    else if (m_sliderSound == pSliderTmp)//音量调节    {        int nValue = m_sliderSound->GetPos();        nValue -= 255;        EasyPlayerPro_Setparam(m_player, EASY_PARAM_AUDIO_VOLUME, &nValue);    }

C#开发EasyPlayerPro

C#我真不擅长，故此，只对libEasyPlayerPro的调用做简单介绍；
首先，创建一个Winform程序（类似于MFC的Dialog程序），然后导入 libeasyplayerpro.dll，生成实体类，即可调用接口。
(1) libeasyplayerpro.dll接口类化
导入dll，生产类，声明需要用到的参数列表如下：

        public enum tagEASY_PARAM_ID        {            //++ public            // duration & position            PARAM_MEDIA_DURATION = 0x1000,            PARAM_MEDIA_POSITION,            // media detail info            PARAM_VIDEO_WIDTH,            PARAM_VIDEO_HEIGHT,            // video display mode            PARAM_VIDEO_MODE,            // audio volume control            PARAM_AUDIO_VOLUME,            // playback speed control            PARAM_PLAY_SPEED,            // video decode thread count            PARAM_DECODE_THREAD_COUNT,            // visual effect mode            PARAM_VISUAL_EFFECT,            // audio/video sync diff            PARAM_AVSYNC_TIME_DIFF,            // player event callback            PARAM_PLAYER_CALLBACK,            // audio/video stream            PARAM_AUDIO_STREAM_TOTAL,            PARAM_VIDEO_STREAM_TOTAL,            PARAM_SUBTITLE_STREAM_TOTAL,            PARAM_AUDIO_STREAM_CUR,            PARAM_VIDEO_STREAM_CUR,            PARAM_SUBTITLE_STREAM_CUR,            //-- public            //++ for adev            PARAM_ADEV_RENDER_TYPE = 0x2000,            //-- for adev            //++ for vdev            PARAM_VDEV_RENDER_TYPE = 0x3000,            PARAM_VDEV_FRAME_RATE,            //-- for vdev            //++ for render            PARAM_RENDER_UPDATE = 0x4000,            PARAM_RENDER_START_PTS,            //-- for render        };

声明Easyplayerpro接口如下：

        //初始化播放视频        [DllImport("libEasyplayerpro.dll", EntryPoint = "EasyPlayerPro_Open", CallingConvention = CallingConvention.Cdecl)]        static extern IntPtr EasyPlayerPro_Open(string file, IntPtr hwnd);        //关闭视频        [DllImport("libEasyplayerpro.dll", EntryPoint = "EasyPlayerPro_Close", CallingConvention = CallingConvention.Cdecl)]        static extern void EasyPlayerPro_Close(IntPtr player);        //播放视频        [DllImport("libEasyplayerpro.dll", EntryPoint = "EasyPlayerPro_Play", CallingConvention = CallingConvention.Cdecl)]        static extern void EasyPlayerPro_Play(IntPtr player);        //单针播放视频        [DllImport("libEasyplayerpro.dll", EntryPoint = "EasyPlayerPro_StepPlay", CallingConvention = CallingConvention.Cdecl)]        static extern void EasyPlayerPro_StepPlay(IntPtr player);        //暂停视频        [DllImport("libEasyplayerpro.dll", EntryPoint = "EasyPlayerPro_Pause", CallingConvention = CallingConvention.Cdecl)]        static extern void EasyPlayerPro_Pause(IntPtr player);        //设置时长        [DllImport("libEasyplayerpro.dll", EntryPoint = "EasyPlayerPro_Seek", CallingConvention = CallingConvention.Cdecl)]        static extern void EasyPlayerPro_Seek(IntPtr player, long ms);        //设置窗口        [DllImport("libEasyplayerpro.dll", EntryPoint = "EasyPlayerPro_Resize", CallingConvention = CallingConvention.Cdecl)]        static extern void EasyPlayerPro_Resize(IntPtr player, int type, int x, int y, int w, int h);        //截图        [DllImport("libEasyplayerpro.dll", EntryPoint = "EasyPlayerPro_Snapshot", CallingConvention = CallingConvention.Cdecl)]        static extern int EasyPlayerPro_Snapshot(IntPtr player, string file, int w, int h, int wait);        //设置参数        [DllImport("libEasyplayerpro.dll", EntryPoint = "EasyPlayerPro_Setparam", CallingConvention = CallingConvention.Cdecl)]        static extern void EasyPlayerPro_Setparam(IntPtr player, uint id, ref IntPtr param);        //得到参数        [DllImport("libEasyplayerpro.dll", EntryPoint = "EasyPlayerPro_Getparam", CallingConvention = CallingConvention.Cdecl)]        static extern void EasyPlayerPro_Getparam(IntPtr player, uint id, ref IntPtr param);

声明一个指针变量用于存放播放器指针：
private IntPtr mPlayer;
创建一个按钮，点击消息处理：

    private void button1_Click(object sender, EventArgs e)        {                                                     EasyPlayerPro_Open("rtmp://live.hkstv.hk.lxdns.com/live/hks", panel1.Handle);        }

其中，panel1是创建的一个pannel，用于显示视频的窗口；
这样，其他接口调用也类似，具体可参考C++的调用流程，这里不做过多赘述；

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