diff options
Diffstat (limited to 'Ryujinx.Graphics.Texture/Astc/BitStream128.cs')
| -rw-r--r-- | Ryujinx.Graphics.Texture/Astc/BitStream128.cs | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/Ryujinx.Graphics.Texture/Astc/BitStream128.cs b/Ryujinx.Graphics.Texture/Astc/BitStream128.cs deleted file mode 100644 index 3bf9769f..00000000 --- a/Ryujinx.Graphics.Texture/Astc/BitStream128.cs +++ /dev/null @@ -1,72 +0,0 @@ -using Ryujinx.Common.Utilities; -using System; -using System.Diagnostics; - -namespace Ryujinx.Graphics.Texture.Astc -{ - public struct BitStream128 - { - private Buffer16 _data; - public int BitsLeft { get; set; } - - public BitStream128(Buffer16 data) - { - _data = data; - BitsLeft = 128; - } - - public int ReadBits(int bitCount) - { - Debug.Assert(bitCount < 32); - - if (bitCount == 0) - { - return 0; - } - - int mask = (1 << bitCount) - 1; - int value = _data.As<int>() & mask; - - Span<ulong> span = _data.AsSpan<ulong>(); - - ulong carry = span[1] << (64 - bitCount); - span[0] = (span[0] >> bitCount) | carry; - span[1] >>= bitCount; - - BitsLeft -= bitCount; - - return value; - } - - public void WriteBits(int value, int bitCount) - { - Debug.Assert(bitCount < 32); - - if (bitCount == 0) return; - - ulong maskedValue = (uint)(value & ((1 << bitCount) - 1)); - - Span<ulong> span = _data.AsSpan<ulong>(); - - if (BitsLeft < 64) - { - ulong lowMask = maskedValue << BitsLeft; - span[0] |= lowMask; - } - - if (BitsLeft + bitCount > 64) - { - if (BitsLeft > 64) - { - span[1] |= maskedValue << (BitsLeft - 64); - } - else - { - span[1] |= maskedValue >> (64 - BitsLeft); - } - } - - BitsLeft += bitCount; - } - } -}
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