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void CALLBACK CBDecode(LONG nPort, FRAME_DECODE_INFO* pFrameDecodeInfo, FRAME_INFO_EX* pFrameInfo, void* pUser){
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    if (pFrameDecodeInfo->nType == T_IYUV)
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    {
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        // 验证输入参数
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        if (!pFrameDecodeInfo->pVideoData[0] || !pFrameDecodeInfo->pVideoData[1] || !pFrameDecodeInfo->pVideoData[2] || pFrameInfo->nWidth <= 0 || pFrameInfo->nHeight <= 0) {
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            return;
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        }
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        cout<<"nFrameSeq(对应的视频帧序号):"<<pFrameInfo->nFrameSeq<<endl;
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        uint8_t* yData = static_cast<uint8_t*>(pFrameDecodeInfo->pVideoData[0]);
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        uint8_t* uData = static_cast<uint8_t*>(pFrameDecodeInfo->pVideoData[1]);
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        uint8_t* vData = static_cast<uint8_t*>(pFrameDecodeInfo->pVideoData[2]);
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        // YUV420P格式:Y分量占width*height,U和V分量各占width*height/4
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        int ySize = pFrameInfo->nWidth * pFrameInfo->nHeight;
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        int uvSize = pFrameInfo->nWidth * pFrameInfo->nHeight / 4;
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        // 创建连续的YUV420P数据缓冲区
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        cv::Mat yuvData(pFrameInfo->nHeight + pFrameInfo->nHeight / 2, pFrameInfo->nWidth, CV_8UC1);
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        // 复制Y分量到缓冲区前部
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        memcpy(yuvData.data, yData, ySize);
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        // 复制U分量
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        memcpy(yuvData.data + ySize, uData, uvSize);
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        // 复制V分量
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        memcpy(yuvData.data + ySize + uvSize, vData, uvSize);
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        // 转换YUV420P到BGR
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        cv::Mat bgrMat;
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        cv::cvtColor(yuvData, bgrMat, cv::COLOR_YUV2BGR_I420);
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        yuvData.~Mat();
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        // 图片保存测试
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        std::string filename = generate_random_string_fast(10) + ".jpg";
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        imwrite(filename, bgrMat);
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    }
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}