28 Feb
2003
28 Feb
'03
6:15 a.m.
Think this needs to go to LAD too...
--- Steve Harris <S.W.Harris(a)ecs.soton.ac.uk> wrote:
I think there was one more too, but I can't think
what it was...
I remember one about sidechains or something. I don't know what a sidechain is,
though, I just recall seeing it somewhere :)
I agree AUDIO_RATE_CONTROL should be renamed.
There was a suggestion on ardour-dev that a hint to say whether control outs
were supposed to be informative or a source of control data might help,
but I'm not sure about it.
Not sure what 'informative' means here... what information do we get if we
ignore the control data on the output?
Does someone want to reword these in a more meaningful
way? If not I'l do
it, then you'l be sorry ;).
I'll have a go :)
(The LADSPA_IS_* things will need to be added too)
/* 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. A control
with this hint should not result in anything too suprising happening to
the user (eg. sudden +100dB gain would be unpleasant). */
#define LADSPA_HINT_RANDOMISABLE 0x80
/* 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
-
Mike
- Steve
> On Wed, 15 Jan 2003 18:13:35 +0000
> Steve Harris <S.W.Harris(a)ecs.soton.ac.uk> wrote:
>
> > There have been a few suggestions recently, I'l try to summarise them
> > for comment.
> >
> > MOMENTARY. A hint to suggest that a control should behave like a
> > momentary switch, eg. on for as long as the user holds down the
> > key/mouse button/whatever. Useful for reset or sync controls for
> > example. Would be useful in the DJ flanger. Only applies to TOGGLED
> > controls.
> >
> > AUDIO_RATE_CONTROL. Hints than an audio control should/could be
> > controlled by a high time res. slider or control data, but shouldn't
> > be connected to the next audio signal by default. I can't think of any
> > simple examples off hand, but combined with MOMENTARY it could be used
> > for sample accurate tempo tapping.
> >
> > RANDOMISABLE. Hints that its useful/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. Allows
> > you to specify which controls can be randomised without anything too
> > supprising happening to the user (eg. sudden +100dB gain would be
> > unpleasent).
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