RyuKen/Ryujinx.Audio/Renderer/Dsp/FixedPointHelper.cs

33 lines
916 B
C#
Raw Normal View History

using System.Runtime.CompilerServices;
namespace Ryujinx.Audio.Renderer.Dsp
{
public static class FixedPointHelper
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static int ToInt(long value, int qBits)
{
return (int)(value >> qBits);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static float ToFloat(long value, int qBits)
{
return (float)value / (1 << qBits);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static int ToFixed(float value, int qBits)
{
return (int)(value * (1 << qBits));
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static int RoundUpAndToInt(long value, int qBits)
{
int half = 1 << (qBits - 1);
return ToInt(value + half, qBits);
}
}
}