Hi, Back in March it was suggested that some additional hints should be added to LADSPA - there was some discussion, but nothing since. Here's what I gathered from the archives: /* Hint MOMENTARY indicates that that a control should behave like a momentary switch, such as a reset or sync control. LADSPA_HINT_MOMENTARY may only be used in combination with LADSPA_HINT_TOGGLED. */ #define LADSPA_HINT_MOMENTARY 0x40 /* Hint RANDOMISABLE indicates that it's meaningful to randomise the port if the user hits a button. This is useful for the steps of control sequencers, reverbs, and just about anything that's complex. Randomising a control should not result in anything too suprising happening to the user (eg. sudden +100dB gain would be unpleasant). */ #define LADSPA_HINT_RANDOMISABLE 0x80 /* Hint OUTPUT_METER indicates that the value of output control port is likely to be most meaningful to the user if displayed as a meter. Can be combined with LADSPA_HINT_LOGARITHMIC if the meter should use a log scale. (e.g. dB) */ #define LADSPA_HINT_OUTPUT_METER 0x?? /* Plugin Ports: Plugins have `ports' that are inputs or outputs for audio or data. Ports can communicate arrays of LADSPA_Data (for audio or continuous control inputs/outputs) or single LADSPA_Data values (for control input/outputs). This information is encapsulated in the LADSPA_PortDescriptor type which is assembled by ORing individual properties together. Note that a port must be an input or an output port but not both and that a port must be one of either control, audio or continuous. */ [...] /* Property LADSPA_PORT_CONTINUOUS_CONTROL indicates that the port is a control port with data supplied at audio rate. */ #define LADSPA_PORT_CONTINUOUS_CONTROL 0x10 - Myk