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de-bounce Midi::USBchanged signal.

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Debounced USBchanged signal to prevent pauses.
This commit is contained in:
Bruce Brown 2018-01-20 11:17:47 -08:00
parent cbc8698e9a
commit f7caba5295
1 changed files with 7 additions and 1 deletions
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6
interface/src/Application.cpp
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@ -503,9 +503,15 @@ public:
} }
if (message->message == WM_DEVICECHANGE) { if (message->message == WM_DEVICECHANGE) {
const float MIN_DELTA_SECONDS = 2.0f; // de-bounce signal
static float lastTriggerTime = 0.0f;
const float deltaSeconds = secTimestampNow() - lastTriggerTime;
lastTriggerTime = secTimestampNow();
if (deltaSeconds > MIN_DELTA_SECONDS) {
Midi::USBchanged(); // re-scan the MIDI bus Midi::USBchanged(); // re-scan the MIDI bus
} }
} }
}
return false; return false;
} }
}; };