EasyRTMP實作對接海康、大華等IPCamera SDK進行RTMP推送直播功能

本文轉自EasyDarwin團隊Kim的部落格：http://blog.csdn.net/jinlong0603

Demo項目介紹

EasyRTMP Demo代碼下載下傳位址https://github.com/EasyDarwin/EasyRTMP

EasyRTMP調用錄影機裝置SDK進行RTMP流推送轉發示例：

https://github.com/EasyDarwin/EasyRTMP

本文介紹Demo中EasyRTMP_SDK的項目。該項目是通過調用IP Camera自己的SDK擷取到音視訊流，然後通過libEasyRTMP推送到RTMP伺服器進行直播。這樣就可以将普通的不支援RTMP的IP Camera接入RTMP伺服器進行直播推送。該Demo程式可以交叉編譯内置到IP Camera内部，或者在Windows或者其他系統中執行此Demo拉取IP Camera的資料流再推送到RTMP伺服器。

Github中Demo裡面用的IP Camera的SDK是EasyDarwin官網賣的海芯威視的IP Camera。如果想接入其他家的IP Camera（如海康、大華等）可自己将SDK庫及調用方式換成相應的版本。

代碼解析

下面是IP Camera SDK 資料回調函數的部分，解析回調出來的資料并使用libEasyRTMP庫進行RTMP推送。關于回調出來的音頻資料如果不是AAC格式，可以通過EasyDarwin團隊提供的開源的EasyAACEncoder将其轉成AAC格式再推送，當然使用其他的方式隻要能轉成正确的AAC格式就可以。

HI_S32 NETSDK_APICALL OnStreamCallback(HI_U32 u32Handle,
                                HI_U32 u32DataType, 
                                HI_U8* pu8Buffer,
                                HI_U32 u32Length,
                                HI_VOID* pUserData
                                )
{
    HI_S_AVFrame* pstruAV = HI_NULL;
    HI_S_SysHeader* pstruSys = HI_NULL;

    if (u32DataType == HI_NET_DEV_AV_DATA)
    {
        pstruAV = (HI_S_AVFrame*)pu8Buffer;

        if (pstruAV->u32AVFrameFlag == HI_NET_DEV_VIDEO_FRAME_FLAG)
        {
            if(g_RtmpHandle ==  ) return ;

            if(pstruAV->u32AVFrameLen > )
            {
                unsigned char* pbuf = (unsigned char*)(pu8Buffer+sizeof(HI_S_AVFrame));

                EASY_AV_Frame  avFrame;
                memset(&avFrame, , sizeof(EASY_AV_Frame));
                avFrame.u32AVFrameLen = pstruAV->u32AVFrameLen;
                avFrame.pBuffer = (unsigned char*)pbuf;
                avFrame.u32VFrameType = (pstruAV->u32VFrameType==HI_NET_DEV_VIDEO_FRAME_I)?EASY_SDK_VIDEO_FRAME_I:EASY_SDK_VIDEO_FRAME_P;
                avFrame.u32AVFrameFlag = EASY_SDK_VIDEO_FRAME_FLAG;
                avFrame.u32TimestampSec = pstruAV->u32AVFramePTS/;
                avFrame.u32TimestampUsec = (pstruAV->u32AVFramePTS%)*;
                EasyRTMP_SendPacket(g_RtmpHandle, &avFrame);
            }   
        }
        else
        if (pstruAV->u32AVFrameFlag == HI_NET_DEV_AUDIO_FRAME_FLAG)
        {
            if(g_RtmpHandle ==  ) return ;

            EASY_AV_Frame   avFrame;
            memset(&avFrame, , sizeof(EASY_AV_Frame));
            avFrame.u32AVFrameFlag = EASY_SDK_AUDIO_FRAME_FLAG;

            if(pstruAV->u32AVFrameLen <= ) return ;

            if(EasyInitAACEncoder(EASY_SDK_AUDIO_CODEC_G711A) == )
            {
                memset(m_pAACEncBufer, , *);
                unsigned int iAACBufferLen = ;
                unsigned char* pbuf = (unsigned char*)(pu8Buffer+sizeof(HI_S_AVFrame)) + ;
                if(Easy_AACEncoder_Encode(g_pAACEncoderHandle, (unsigned char*)pbuf,  pstruAV->u32AVFrameLen-, m_pAACEncBufer, &iAACBufferLen) > )
                {
                    avFrame.pBuffer = (Easy_U8*)(m_pAACEncBufer);
                    avFrame.u32AVFrameLen  = iAACBufferLen; 
                    avFrame.u32TimestampSec = pstruAV->u32AVFramePTS/;
                    avFrame.u32TimestampUsec = (pstruAV->u32AVFramePTS%)*;
                    EasyRTMP_SendPacket(g_RtmpHandle, &avFrame);
                }
            }       
        }
    }
    else
    if (u32DataType == HI_NET_DEV_SYS_DATA)
    {
        pstruSys = (HI_S_SysHeader*)pu8Buffer;
        printf("Video W:%u H:%u Audio: %u \n", pstruSys->struVHeader.u32Width, pstruSys->struVHeader.u32Height, pstruSys->struAHeader.u32Format);
    }
    return HI_SUCCESS;
}
           

擷取更多資訊

郵件：[email protected]

WEB：www.EasyDarwin.org

Copyright © EasyDarwin.org 2012-2016