SDK API 调用流程

#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include "trro_remote.h"

//该代码sample未包含UI渲染部分，仅用于视频连接过程参考
int main() {
    //注册signal回调
    TRRO_registerSignalStateCallback(nullptr, [](void *context, SignalState state) {
        if(state == kTrroReady) {
            //服务器连接成功
            printf("init success \\n");
        }
        if (state == kTrroAuthFailed) {
            //鉴权失败
            printf("device_id or password is incorrect\\n");
        }
        if (state == kTrroKickout) {
            //被其他用户剔除
            printf("the device is kicked by server, may be there is another device using the same device id\\n");
        }
    });

    // 可按需替换为其他初始化函数，如使用配置字符串初始化
    int ret = TRRO_initJsonPath("./config.json"); 
    if(TRRO_SUCCED != ret) {
        if (ret == -TRRO_SIGNAL_CONNECT_OUTTIME) {
            printf("init process: wait for connecting\\n");
        } else {
            printf("init fail ret %d\\n", ret);
        }
    }
    
    //按需注册回调
    //注册视频连接状态回调
    TRRO_registerOnState(this, [](void* context, const char* gwid, int stream_id, int conn_fd, int state) {
      printf("###### onstate gwid %s, streamid %d  conn_fd %d  state %d\\n", gwid, stream_id, conn_fd, state);
    });
    //注册媒体传输状态回调
    TRRO_registerOnMediaState(this, [](void* context, int windows_id, int fps, int bps, int rtt, long long decd, int jitter,
        long long packets_lost, long long packets_received, int stun) {
           printf("onMediaState window id %d fps %d bps %d rtt %d decd %lld rb %d lost %lld rec %lld stun %d\\n",windows_id, fps, bps, rtt, decd, jitter, packets_lost, packets_received, stun);
    });
    //注册延迟信息回调
    TRRO_registerAllLatencyCallback(this, [](void* context, const char* gwid, int windows_id, long long latency1, long long latency2, long long gateway_time, int vcct) {
        printf("allLatency %s, %d, latency1 %lld latency2 %lld video time %lld, vcct %d\\n", gwid, windows_id, latency1, latency2, gateway_time, vcct);     
    });
    
    //注册原始视频数据回调，可用于外部渲染
    TRRO_registerRemoteFrameCallback(this, [](void * context, const char * gwid, int stream_id, int conn_id, const char* data, int width, int height, long long videotime) {
       //可以在这里调用渲染函数播放视频数据，但不要阻塞处理，处理延迟大请异步调用其他线程处理，否会导致视频卡顿
       //showMyVideo(gwid, conn_id, (unsigned char*)data, width, height); 
    });

    //视频接收句柄数组
    int confds[8] = {0,1,2,3,4,5,6,7};
    //渲染窗口句柄数组
    WindowIdType window_hwnds[8] = { nullptr};
    //SDK内部渲染设置目标渲染窗口win32 HWND窗口句柄即可，外部渲染可设置空窗口句柄(nullptr)，通过实现showMyVideo进行渲染
    TRRO_setWindows(confds, window_hwnds, 8);
    //连接视频流, 假设每个现场设备需要连接4个视频流
    int stream_num = 4;
    int stream_indexs = [0,1,2,3];
    //连接现场设备1的4个视频流0-3, 使用视频接收句柄 0-3
    TRRO_connect("field_deviceId1", "", stream_num , &stream_indexs[0], &confds[0]);
    //连接现场设备2的4个视频流0-3，使用视频接收句柄 4-7
    TRRO_connect("field_deviceId2", "", stream_num , &stream_indexs[0], &confds[4]);
    //等待退出
    while(true){
        sleep(3000);
        //断开视频流
        TRRO_disconnectAll();
        //退出SDK,释放资源
        TRRO_destroy();
        break;
    }
    return 0;
}