| Namespace | Windows.Devices.Midi2.Utilities.Sequencing |
|---|---|
| Type Name | MidiSequencePlayerPosition |
| Type | WinRT Struct |
| IDL | MidiSequencePlayerPosition.idl |
MidiSequencePlayerPosition is everything a transport display needs, read in one call. It is the Position property of MidiSequencePlayer.
| Field | Description |
|---|---|
State |
The MidiSequencePlayerState when it was read |
Microseconds |
The position in time right now |
DurationMicroseconds |
The total length of the loaded sequence |
Tick |
The position in ticks right now |
Bar |
The bar right now, counted from one |
Beat |
The beat within the bar right now, counted from one |
BeatsPerMinute |
The tempo at this position, not for the whole sequence |
Read this on a timer, instead of waiting for an event. It’s a struct, not an event, because a display updates tens of times a second, and an event for every frame would cost more than the drawing does. The player has no position event, on purpose.
Every field is read at the same moment, so the bar, beat, and time can’t disagree with each other, the way they could if you read four separate properties.
Times and tempo are the sequence’s own, whatever the player’s PlaybackRate. At half speed, Microseconds moves forward half a second for every second that passes, and BeatsPerMinute is still the tempo written in the sequence. Multiply it by PlaybackRate for the tempo you hear.
Windows MIDI Services is an open source project with all source available on GitHub. We have a great community on Discord as well. Between GitHub and Discord, you should find the information you are looking for.
