| Value | Meaning | 
|---|---|
| PA_SUBSCRIPTION_MASK_NULL0x0000U | |
| PA_SUBSCRIPTION_MASK_SINK0x0001U | < No events  | 
| PA_SUBSCRIPTION_MASK_SOURCE0x0002U | < Sink events  | 
| PA_SUBSCRIPTION_MASK_SINK_INPUT0x0004U | < Source events  | 
| PA_SUBSCRIPTION_MASK_SOURCE_OUTPUT0x0008U | < Sink input events  | 
| PA_SUBSCRIPTION_MASK_MODULE0x0010U | < Source output events  | 
| PA_SUBSCRIPTION_MASK_CLIENT0x0020U | < Module events  | 
| PA_SUBSCRIPTION_MASK_SAMPLE_CACHE0x0040U | < Client events  | 
| PA_SUBSCRIPTION_MASK_SERVER0x0080U | < Sample cache events  | 
| PA_SUBSCRIPTION_MASK_AUTOLOAD0x0100U | \cond fulldocs  | 
| PA_SUBSCRIPTION_MASK_CARD0x0200U | \endcond  | 
| PA_SUBSCRIPTION_MASK_ALL0x02ffU | < Card events. \since 0.9.15  | 
Subscription event mask, as used by pa_context_subscribe()