优化ptz的websocket推送

‘liusuyi’

2023-06-24 388aba5a9bf187edada44787a9268401d01b7a59

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exports.encrypt = function (self, block) {
  return self._cipher.encryptBlock(block)
}
 
exports.decrypt = function (self, block) {
  return self._cipher.decryptBlock(block)
}