| Value | Meaning |
|---|---|
| kVstProcessLevelUnknown0 | < not supported by Host |
| kVstProcessLevelUser | < 1: currently in user thread (GUI) |
| kVstProcessLevelRealtime | < 2: currently in audio thread (where process is called) |
| kVstProcessLevelPrefetch | < 3: currently in 'sequencer' thread (MIDI, timer etc) |
| kVstProcessLevelOffline | < 4: currently offline processing and thus in user thread |