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ryujinx-fork/Ryujinx.Graphics.Nvdec.Vp9/Common/BitUtils.cs
gdkchan 4d02a2d2c0
New NVDEC and VIC implementation (#1384)
* Initial NVDEC and VIC implementation

* Update FFmpeg.AutoGen to 4.3.0

* Add nvdec dependencies for Windows

* Unify some VP9 structures

* Rename VP9 structure fields

* Improvements to Video API

* XML docs for Common.Memory

* Remove now unused or redundant overloads from MemoryAccessor

* NVDEC UV surface read/write scalar paths

* Add FIXME comments about hacky things/stuff that will need to be fixed in the future

* Cleaned up VP9 memory allocation

* Remove some debug logs

* Rename some VP9 structs

* Remove unused struct

* No need to compile Ryujinx.Graphics.Host1x with unsafe anymore

* Name AsyncWorkQueue threads to make debugging easier

* Make Vp9PictureInfo a ref struct

* LayoutConverter no longer needs the depth argument (broken by rebase)

* Pooling of VP9 buffers, plus fix a memory leak on VP9

* Really wish VS could rename projects properly...

* Address feedback

* Remove using

* Catch OperationCanceledException

* Add licensing informations

* Add THIRDPARTY.md to release too

Co-authored-by: Thog <me@thog.eu>
2020-07-12 05:07:01 +02:00

59 lines
1.8 KiB
C#

using System;
using System.Diagnostics;
using System.Numerics;
using System.Runtime.CompilerServices;
namespace Ryujinx.Graphics.Nvdec.Vp9.Common
{
internal static class BitUtils
{
// FIXME: Enable inlining here after AVX2 gather bug is fixed.
// [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;
}
}
}