65 lines
1.9 KiB
C#
Executable File
65 lines
1.9 KiB
C#
Executable File
using System;
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using System.Runtime.InteropServices;
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namespace Luski.net.Sound
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{
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internal class EventTimer
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{
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internal EventTimer()
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{
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m_DelegateTimeEvent = new Win32.TimerEventHandler(OnTimer);
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}
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private bool m_IsRunning = false;
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private uint m_Milliseconds = 20;
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private uint m_TimerId = 0;
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private GCHandle m_GCHandleTimer;
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private uint m_UserData = 0;
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private uint m_ResolutionInMilliseconds = 0;
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private readonly Win32.TimerEventHandler m_DelegateTimeEvent;
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internal delegate void DelegateTimerTick();
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internal event DelegateTimerTick? TimerTick;
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internal void Start(uint milliseconds)
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{
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m_Milliseconds = milliseconds;
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Win32.TimeCaps tc = new();
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Win32.TimeGetDevCaps(ref tc, (uint)Marshal.SizeOf(typeof(Win32.TimeCaps)));
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m_ResolutionInMilliseconds = Math.Max(tc.wPeriodMin, 0);
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Win32.TimeBeginPeriod(m_ResolutionInMilliseconds);
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m_TimerId = Win32.TimeSetEvent(m_Milliseconds, m_ResolutionInMilliseconds, m_DelegateTimeEvent, ref m_UserData, Win32.TIME_PERIODIC);
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if (m_TimerId > 0)
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{
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m_GCHandleTimer = GCHandle.Alloc(m_TimerId, GCHandleType.Pinned);
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m_IsRunning = true;
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}
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}
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internal void Stop()
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{
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if (m_TimerId > 0)
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{
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_ = Win32.TimeKillEvent(m_TimerId);
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Win32.TimeEndPeriod(m_ResolutionInMilliseconds);
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if (m_GCHandleTimer.IsAllocated)
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{
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m_GCHandleTimer.Free();
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}
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m_TimerId = 0;
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m_IsRunning = false;
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}
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}
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private void OnTimer(uint id, uint msg, ref uint userCtx, uint rsv1, uint rsv2)
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{
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TimerTick?.Invoke();
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}
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}
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}
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