compatible to local files

554325746@qq.com

2020-03-10 278634c0d2eeba9e3fcc3b4cd56ddfb3323277d7

 csrc/ffmpeg/data/PicData.cpp

@@ -46,7 +46,7 @@
   bool PicData::init_AVPicture(){
      data_size_ = avpicture_get_size((AVPixelFormat)pix_fmt_,
                               width_, height_);
      if(data_size_ < 0){
      if(data_size_ <= 0){
         logIt("avpicture_get_size error");
         return false;
      }