add zerocopy

zhangmeng

2019-11-20 dc65b072a13994ff02cc7b54f3b00ba087e7f86a

 csrc/ffmpeg/log/log.cpp

@@ -87,6 +87,7 @@
            std::string lc(temp);
            lc = "LIB-libcffmpeg.so-> " + lc;
            spdlog::get(log_name)->error(lc);
            spdlog::get(log_name)->flush();
        }else{
            printf("%s\n", temp);
        }