[gmpi] Re: 3.8 update
- From: Chris Grigg <gmpi-public@xxxxxxxxxxxxxx>
- To: gmpi@xxxxxxxxxxxxx
- Date: Fri, 16 Jan 2004 00:52:12 -0800
I've put the gestures and ramped events stuff into section 3.8.
We've got to finish debate on ramping, and we may want to change the
terminology on gestures (see a previous mail from me).
Please have a read-over. If we want to change things, lets get them done,
soon. This topic has taken a looong time. :P
http://www.gmpi-plugins.org/gmpi/requirements.php
Looking good. Just a couple suggested edits to address some slight
vagueness in the current draft:
3.8. Events
Req 22: GMPI must implement a time-stamped, sample-accurate event
system. Events are how...
...all real-time signals and other events including...
...control changes are represented.
Req 23: All events bound for a plugin during a timeslice must be
delivered...
(Should that be 'enqueued' for clarity?)
...before...
...the process() function of...
...that plugin is run. Events must never delivered while a plugin
is processing.
(Maybe make that: 'GMPI hosts will never deliver any additional
events during execution of a plug-in's process() function.'?)
Req 24: Event timestamps....
...that the plug-in sees in its input queues...
..must be measured as a sample frame offset from thestart of the
processing block.
(Maybe make that 'time slice' for consistency?)
Req 25: GMPI must provide...
(Maybe make that 'support'?)
...ramped events for controls with real number types. Plugins
that do not handle...
(Maybe make that 'process'?)
...ramped events must be able to receive point value events, or
convert ramped events into point value events.
(Maybe make that 'must treat ramp events as immediate point events
(by ignoring the event's ramp duration and jumping directly to the
event's target value)'?)
Req 26: GMPI....
...hosts...
..must support grouping events into 'gestures'. It must be possible
to include zero or more events for multiple controls in a gesture.
Gestures must be optional for all plugins...
(Maybe make that 'Support for gesture grouping in plug-ins is
optional.'? The phrase 'must be optional' is a little confusing.)
....The host must handle the case of conflicting gestures.
(Maybe define 'conflicting gestures'?)
-- Chris G.
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