How to filter swap transactions of a specific wallet during a stream?
Filter are applicable for the contract events. So if you are listening to the swap events from a contract you can use the filter to check the swap params for the wallet address to know if the swap is from a wallet. This way you can filter swaps that were initiated by a wallet address.
Here is a tutorial showing how you can listen to contract events and also explaining how to filter the streams based on the event values.