Every meter event contains its metrical position and its duration in quanta to the next event. So if you ask for a resolution of 2 and the meter is 3/8, you will receive two meter events, one at the beginning of the measure with a duration of 2 eighth notes (expressed in quanta), and 1 after 2 eighth notes with a duration of 1 eighth note. Therefore all tempo changes are quantized by the host to the resolution requested by the plugin.
I don't get this. How does the host know how to quantize like this. Better, perhaps to just get a BEAT event and subdivide that internally. But if plugins start relying on this, then we have to assume we send meter events when the transport is stopped, which is weird..
The meter events would only flow while transport was not stopped. The host knows its timeline.
So it knows how to calculate the exact position in quanta of any event, after taking into account tempo changes. So every meter event simply contains a duration, which is the delta in time before the host is going to send the next meter event.
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