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implement generic high-level input debouncing

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Glenn Maynard
2005-09-19 07:09:55 +00:00
parent e308f7e6ea
commit 1df0a43b3f
2 changed files with 54 additions and 11 deletions
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stepmania/src/InputFilter.cpp
+45 -9
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@@ -4,7 +4,25 @@
#include "RageInput.h"
#include "RageUtil.h"
#include "RageThreads.h"
#include "Preference.h"
/*
* Some input devices require debouncing. Do this on both press and release. After
* reporting a change in state, don't report another for the debounce period. If a
* button is reported pressed, report it. If the button is immediately reported
* released, wait a period before reporting it; if the button is repressed during
* that time, the release is never reported.
*
* The detail is important: if a button is pressed for 1ms and released, we must
* always report it, even if the debounce period is 10ms, since it might be a coin
* counter with a very short signal. The only time we discard events is if a button
* is pressed, released and then pressed again quickly.
*
* This delay in events is ordinarily not noticable, because the we report initial
* presses and releases immediately. However, if a real press is ever delayed,
* this won't cause timing problems, because the event timestamp is preserved.
*/
static Preference<float> g_fInputDebounceTime( "InputDebounceTime", 0 );
InputFilter* INPUTFILTER = NULL; // global and accessable from anywhere in our program
@@ -49,6 +67,15 @@ void InputFilter::ResetRepeatRate()
SetRepeatRate( TIME_BEFORE_SLOW_REPEATS, SLOW_REPEATS_PER_SEC, TIME_BEFORE_FAST_REPEATS, FAST_REPEATS_PER_SEC );
}
InputFilter::ButtonState::ButtonState():
m_BeingHeldTime(RageZeroTimer),
m_LastReportTime(RageZeroTimer)
{
m_BeingHeld = false;
m_bLastReportedHeld = false;
m_fSecsHeld = m_Level = m_LastLevel = 0;
}
void InputFilter::ButtonPressed( DeviceInput di, bool Down )
{
LockMut(*queuemutex);
@@ -71,13 +98,11 @@ void InputFilter::ButtonPressed( DeviceInput di, bool Down )
bs.m_Level = di.level;
if( bs.m_BeingHeld == Down )
return;
bs.m_BeingHeld = Down;
bs.m_fSecsHeld = 0;
queue.push_back( InputEvent(di,Down? IET_FIRST_PRESS:IET_RELEASE) );
if( bs.m_BeingHeld != Down )
{
bs.m_BeingHeld = Down;
bs.m_BeingHeldTime = di.ts;
}
}
void InputFilter::SetButtonComment( DeviceInput di, const CString &sComment )
@@ -129,6 +154,17 @@ void InputFilter::Update(float fDeltaTime)
di.button = b;
di.level = bs.m_Level;
/* Generate IET_FIRST_PRESS and IET_RELEASE events. */
if( now - bs.m_LastReportTime >= g_fInputDebounceTime && bs.m_BeingHeld != bs.m_bLastReportedHeld )
{
bs.m_LastReportTime = now;
bs.m_bLastReportedHeld = bs.m_BeingHeld;
bs.m_fSecsHeld = 0;
di.ts = bs.m_BeingHeldTime;
queue.push_back( InputEvent(di,bs.m_bLastReportedHeld? IET_FIRST_PRESS:IET_RELEASE) );
}
/* Generate IET_LEVEL_CHANGED events. */
if( bs.m_LastLevel != bs.m_Level && bs.m_Level != -1 )
{
@@ -137,7 +173,7 @@ void InputFilter::Update(float fDeltaTime)
}
/* Generate IET_FAST_REPEAT and IET_SLOW_REPEAT events. */
if( !bs.m_BeingHeld )
if( !bs.m_bLastReportedHeld )
continue;
const float fOldHoldTime = bs.m_fSecsHeld;
@@ -170,7 +206,7 @@ void InputFilter::Update(float fDeltaTime)
bool InputFilter::IsBeingPressed( DeviceInput di )
{
return m_ButtonState[di.device][di.button].m_BeingHeld;
return m_ButtonState[di.device][di.button].m_bLastReportedHeld;
}
float InputFilter::GetSecsHeld( DeviceInput di )