Re: [linux-audio-dev] LADSPA 1.1

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Subject: Re: [linux-audio-dev] LADSPA 1.1
From: Richard Guenther (rguenth_AT_tat.physik.uni-tuebingen.de)
Date: Wed Jan 16 2002 - 22:45:02 EET

On Wed, 16 Jan 2002, Steve Harris wrote:

> Late last year there was some discussion about LADSPA 1.1, the defaults
> issue still needs resolving, so can we agree on it?
>
> Paul's suggested addition to handle defaults looks like:
>
> ----------------------------------------------------------------------
> /* Hint LADSPA_HINT_DEFAULT_* indicates that in the absence of
> other information (such as a preset or user preferences) a port
> should be set to the suggested initial value. Notice that this
> hint is valid only for control ports, and should not be set for
> audio ports (hosts should ignore it if it is).
>
> HINT_DEFAULT_{MIN,MID,MAX} all require that the HintDescriptor
> has HINT_BOUNDED_ABOVE and/or HINT_BOUNDED_BELOW set, as required
> to compute the default value.
> */
>
> #define LADSPA_HINT_DEFAULT_ZERO 0x40 /* set to 0.0 */
> #define LADSPA_HINT_DEFAULT_ONE 0x80 /* set to 1.0 */
> #define LADSPA_HINT_DEFAULT_MIN 0x100 /* set to min */
> #define LADSPA_HINT_DEFAULT_MID 0x200 /* set to min+(max-min/2) */
> #define LADSPA_HINT_DEFAULT_MAX 0x400 /* set to max */

I'd add

#define LADSPA_HINT_DEFAULT 0x40 /* set to LADSPA_PortRangeHint->Default
*/

and add a member to the LADSPA_PortRangeHint structure (at the end, of
course, being available, if the flag is set). Still compatible with
old LADSPA versions.

Richard. 

--
Richard Guenther <richard.guenther_AT_student.uni-tuebingen.de>
PGP: 2E829319 - 2F 83 FC 93 E9 E4 19 E2 93 7A 32 42 45 37 23 57
WWW: http://www.anatom.uni-tuebingen.de/~richi/

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