使用librtmp推流/拉流

准备工作

#include "librtmp/rtmp_sys.h"
#include "librtmp/log.h"

#pragma comment(lib, "librtmp.lib")
#pragma comment(lib, "WS2_32.lib")

WORD version;
WSADATA wsaData;
version = MAKEWORD(1, 1);
WSAStartup(version, &wsaData);

int res = 0;
RTMP* rtmp =  RTMP_Alloc();
RTMP_Init(rtmp);

推流

    res = RTMP_SetupURL(rtmp, "rtmp://192.168.34.40/live/test");//推流
    PRINTERROR(res, 1, "RTMP_SetupURL error.\n");
    //if unable,the AMF command would be 'play' instead of 'publish'
    RTMP_EnableWrite(rtmp);//推流要设置写
    res = RTMP_Connect(rtmp, NULL);
    PRINTERROR(res, 1, "RTMP_Connect error.\n");
    res = RTMP_ConnectStream(rtmp,0);
    PRINTERROR(res, 1, "RTMP_ConnectStream error.\n");

    //推流
    FILE *fp_push=fopen("save.flv","rb");
    FlvHeader flvheader;
    fread(&flvheader, sizeof(flvheader), 1, fp_push);
    int32_t preTagLen = 0;//前一个Tag长度
    fread(&preTagLen, 4, 1, fp_push);
    TagHeader tagHeader;
    uint32_t begintime=RTMP_GetTime(),nowtime,pretimetamp = 0;

    while (true)
    {
        fread(&tagHeader, sizeof(tagHeader), 1, fp_push);
        if(tagHeader.type != 0x09)
        {
            int num = FINT24TOINT(tagHeader.datalen);
            fseek(fp_push, FINT24TOINT(tagHeader.datalen)+4, SEEK_CUR);
            continue;
        }
        fseek(fp_push, -sizeof(tagHeader), SEEK_CUR);
        if((nowtime=RTMP_GetTime()-begintime)<pretimetamp)
        {
            printf("%d - %d\n", pretimetamp, nowtime);
            Sleep(pretimetamp-nowtime);
            continue;
        }

        char* pFileBuf=(char*)malloc(11+FINT24TOINT(tagHeader.datalen)+4);
        memset(pFileBuf,0,11+FINT24TOINT(tagHeader.datalen)+4);
        if(fread(pFileBuf,1,11+FINT24TOINT(tagHeader.datalen)+4,fp_push)!=11+FINT24TOINT(tagHeader.datalen)+4)
            break;

        if ((res = RTMP_Write(rtmp,pFileBuf,11+FINT24TOINT(tagHeader.datalen)+4)) <= 0)
        {
            printf("RTMP_Write end.\n");
            break;
        }
        pretimetamp = FINT24TOINT(tagHeader.timestamp);

        free(pFileBuf);
        pFileBuf=NULL;
    }
    //推流结束

拉流

    res = RTMP_SetupURL(rtmp, "rtmp://live.hkstv.hk.lxdns.com/live//hks");//拉流
    PRINTERROR(res, 1, "RTMP_SetupURL error.\n");
    //if unable,the AMF command would be 'play' instead of 'publish'
    //RTMP_EnableWrite(rtmp);//推流要设置写
    res = RTMP_Connect(rtmp, NULL);
    PRINTERROR(res, 1, "RTMP_Connect error.\n");
    res = RTMP_ConnectStream(rtmp,0);
    PRINTERROR(res, 1, "RTMP_ConnectStream error.\n");

    //拉流
    int nRead = 0, NRead = 0;
    int bufsize = 1024*1024;
    char* buf = (char*)malloc(bufsize);
    FILE* fp_save = fopen("save.flv", "wb");
    while(nRead=RTMP_Read(rtmp,buf,bufsize))
    {
        fwrite(buf,1,nRead,fp_save);
        NRead += nRead;
        RTMP_LogPrintf("Receive: %5dByte, Total: %5.2fkB\n",nRead,NRead*1.0/1024);
    }
    //拉流结束

清理资源

    RTMP_Close(rtmp);
    RTMP_Free(rtmp);
    WSACleanup();

Github

https://github.com/gongluck/testLibRtmp.git

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