[linux-audio-dev] Additional LADSPA hints

Steve Harris S.W.Harris at ecs.soton.ac.uk
Wed Jan 22 04:57:01 UTC 2003


On Tue, Jan 21, 2003 at 11:02:08 -0800, robbins jacob wrote:
> However, it seems that plugin writers are more comfortable interpreting 
> port type=audio to mean that the rate of the port is audio rate. Steve 
> suggests that it is splitting hairs to try to absolutely determine whether 
> an audio-rate port is for audio or control content. If this is the case 
> then we should just leave 2 port types and add a hint for audio-rate ports 
> that they should be used for control data.
> 
> I feel I must warn that this will make the ladspa_port_types audio vs 
> control a little misleading to people when they first read the header. If 
> the port type is chosen to be audio and not data then the port should be 
> for audio and not data, right? In short I think adding a third port type 
> would keep the header self-consistent, whereas adding a hint that overrides 
> and reverses the port type is twisting the standard to match current useage.

Not at all, the /type/ indicates what data you should expect (a vector of
LADSPA_Data or a single value), whereas the hint indicates likely usage.
Continuous control is a common term than implies a stream of data.

In any case this will not be directly visible to users.

- Steve



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