| Top |  |  |  |  | 
A HinawaSndEfw is an application of Echo Fireworks Transaction (EFT). This inherits HinawaSndUnit.
void hinawa_snd_efw_open (HinawaSndEfw *self,gchar *path,GError **exception);
Open ALSA hwdep character device and check it for Fireworks devices.
| self | ||
| path | A full path of a special file for ALSA hwdep character device | |
| exception | A GError | 
void hinawa_snd_efw_transact (HinawaSndEfw *self,guint category,guint command,GArray *args,GArray *params,GError **exception);
| self | ||
| category | one of category for the transact | |
| command | one of commands for the transact | |
| args | arguments for the transaction. | [nullable][element-type guint32][array][in] | 
| params | return params. | [element-type guint32][array][out caller-allocates] | 
| exception | A GError |