diff options
| author | TSR Berry <20988865+TSRBerry@users.noreply.github.com> | 2023-04-08 01:22:00 +0200 |
|---|---|---|
| committer | Mary <thog@protonmail.com> | 2023-04-27 23:51:14 +0200 |
| commit | cee712105850ac3385cd0091a923438167433f9f (patch) | |
| tree | 4a5274b21d8b7f938c0d0ce18736d3f2993b11b1 /src/Ryujinx.Graphics.Nvdec.Vp9/Common/BitUtils.cs | |
| parent | cd124bda587ef09668a971fa1cac1c3f0cfc9f21 (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.cs | 58 |
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; + } + } +} |
