Dreamview: added downsample input validation (#914)
Dreamview: added downsample input validation (#914)


jinghaomiao/apollo,jinghaomiao/apollo,wanglei828/apollo,ApolloAuto/apollo,wanglei828/apollo,wanglei828/apollo,wanglei828/apollo,jinghaomiao/apollo,ycool/apollo,ycool/apollo,wanglei828/apollo,ycool/apollo,jinghaomiao/apollo,ApolloAuto/apollo,wanglei828/apollo,xiaoxq/apollo,ApolloAuto/apollo,xiaoxq/apollo,xiaoxq/apollo,xiaoxq/apollo,jinghaomiao/apollo,ycool/apollo,ApolloAuto/apollo,xiaoxq/apollo,ApolloAuto/apollo,jinghaomiao/apollo,ycool/apollo,ycool/apollo,xiaoxq/apollo,ApolloAuto/apollo