bug fixed gb28181

zhangmeng

2021-07-30 8f44600c2e5d6141aebf49536a6ddbafc6c18d75

 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;
      }