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authorTSR Berry <20988865+TSRBerry@users.noreply.github.com>2023-04-08 01:22:00 +0200
committerMary <thog@protonmail.com>2023-04-27 23:51:14 +0200
commitcee712105850ac3385cd0091a923438167433f9f (patch)
tree4a5274b21d8b7f938c0d0ce18736d3f2993b11b1 /src/Ryujinx.Graphics.Nvdec.Vp9/Common/BitUtils.cs
parentcd124bda587ef09668a971fa1cac1c3f0cfc9f21 (diff)
Move solution and projects to src
Diffstat (limited to 'src/Ryujinx.Graphics.Nvdec.Vp9/Common/BitUtils.cs')
-rw-r--r--src/Ryujinx.Graphics.Nvdec.Vp9/Common/BitUtils.cs58
1 files changed, 58 insertions, 0 deletions
diff --git a/src/Ryujinx.Graphics.Nvdec.Vp9/Common/BitUtils.cs b/src/Ryujinx.Graphics.Nvdec.Vp9/Common/BitUtils.cs
new file mode 100644
index 00000000..641188f8
--- /dev/null
+++ b/src/Ryujinx.Graphics.Nvdec.Vp9/Common/BitUtils.cs
@@ -0,0 +1,58 @@
+using System;
+using System.Diagnostics;
+using System.Numerics;
+using System.Runtime.CompilerServices;
+
+namespace Ryujinx.Graphics.Nvdec.Vp9.Common
+{
+ internal static class BitUtils
+ {
+ [MethodImpl(MethodImplOptions.AggressiveInlining)]
+ public static byte ClipPixel(int val)
+ {
+ return (byte)((val > 255) ? 255 : (val < 0) ? 0 : val);
+ }
+
+ [MethodImpl(MethodImplOptions.AggressiveInlining)]
+ public static ushort ClipPixelHighbd(int val, int bd)
+ {
+ return bd switch
+ {
+ 10 => (ushort)Math.Clamp(val, 0, 1023),
+ 12 => (ushort)Math.Clamp(val, 0, 4095),
+ _ => (ushort)Math.Clamp(val, 0, 255)
+ };
+ }
+
+ [MethodImpl(MethodImplOptions.AggressiveInlining)]
+ public static int RoundPowerOfTwo(int value, int n)
+ {
+ return (value + (1 << (n - 1))) >> n;
+ }
+
+ [MethodImpl(MethodImplOptions.AggressiveInlining)]
+ public static long RoundPowerOfTwo(long value, int n)
+ {
+ return (value + (1L << (n - 1))) >> n;
+ }
+
+ [MethodImpl(MethodImplOptions.AggressiveInlining)]
+ public static int AlignPowerOfTwo(int value, int n)
+ {
+ return (value + ((1 << n) - 1)) & ~((1 << n) - 1);
+ }
+
+ [MethodImpl(MethodImplOptions.AggressiveInlining)]
+ private static int GetMsb(uint n)
+ {
+ Debug.Assert(n != 0);
+ return 31 ^ BitOperations.LeadingZeroCount(n);
+ }
+
+ [MethodImpl(MethodImplOptions.AggressiveInlining)]
+ public static int GetUnsignedBits(uint numValues)
+ {
+ return numValues > 0 ? GetMsb(numValues) + 1 : 0;
+ }
+ }
+}