onDecryptData method
@detail callback
@brief Custom decryption.
Decrypts custom encrypted audio & video frame data. For custom encryption, see onEncryptData{@link #IRTCEncryptionHandler#onEncryptData}.
@param data Encrypted data.
@return Decrypted data
Implementation
FutureOr<ArrayBuffer> onDecryptData(ArrayBuffer data) async {
throw UnimplementedError();
}