515fc32b21
* dotnet format style --severity info Some changes were manually reverted. * dotnet format analyzers --serverity info Some changes have been minimally adapted. * Restore a few unused methods and variables * Silence dotnet format IDE0060 warnings * Silence dotnet format IDE0052 warnings * Address dotnet format CA1816 warnings * Address or silence dotnet format CA2208 warnings * Address or silence dotnet format CA2211 warnings * Address review comments * Address most dotnet format whitespace warnings * Apply dotnet format whitespace formatting A few of them have been manually reverted and the corresponding warning was silenced * Format if-blocks correctly * Run dotnet format whitespace after rebase * Run dotnet format after rebase and remove unused usings - analyzers - style - whitespace * Add comments to disabled warnings * Remove a few unused parameters * Simplify properties and array initialization, Use const when possible, Remove trailing commas * Start working on disabled warnings * Fix and silence a few dotnet-format warnings again * Address IDE0251 warnings * Silence IDE0060 in .editorconfig * Revert "Simplify properties and array initialization, Use const when possible, Remove trailing commas" This reverts commit 9462e4136c0a2100dc28b20cf9542e06790aa67e. * dotnet format whitespace after rebase * Fix naming rule violations, remove redundant code and fix build issues * Apply suggestions from code review Co-authored-by: Ac_K <Acoustik666@gmail.com> * Add trailing commas * Apply suggestions from code review Co-authored-by: Ac_K <Acoustik666@gmail.com> * Address review feedback --------- Co-authored-by: Ac_K <Acoustik666@gmail.com>
104 lines
3.3 KiB
C#
104 lines
3.3 KiB
C#
using System;
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using System.Runtime.CompilerServices;
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namespace Ryujinx.Audio.Renderer.Utils
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{
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/// <summary>
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/// A simple bit array implementation backed by a <see cref="Memory{T}"/>.
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/// </summary>
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public class BitArray
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{
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/// <summary>
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/// The backing storage of the <see cref="BitArray"/>.
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/// </summary>
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private readonly Memory<byte> _storage;
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/// <summary>
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/// Create a new <see cref="BitArray"/> from <see cref="Memory{T}"/>.
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/// </summary>
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/// <param name="storage">The backing storage of the <see cref="BitArray"/>.</param>
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public BitArray(Memory<byte> storage)
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{
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_storage = storage;
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}
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/// <summary>
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/// Get the byte position of a given bit index.
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/// </summary>
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/// <param name="index">A bit index.</param>
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/// <returns>The byte position of a given bit index.</returns>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private static int ToPosition(int index) => index / 8;
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/// <summary>
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/// Get the bit position of a given bit index inside a byte.
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/// </summary>
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/// <param name="index">A bit index.</param>
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/// <returns>The bit position of a given bit index inside a byte.</returns>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private static int ToBitPosition(int index) => index % 8;
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/// <summary>
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/// Test if the bit at the given index is set.
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/// </summary>
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/// <param name="index">A bit index.</param>
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/// <returns>Return true if the bit at the given index is set</returns>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public bool Test(int index)
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{
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ulong mask = 1ul << ToBitPosition(index);
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return (_storage.Span[ToPosition(index)] & mask) == mask;
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}
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/// <summary>
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/// Set the bit at the given index.
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/// </summary>
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/// <param name="index">A bit index.</param>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void Set(int index)
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{
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Set(index, true);
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}
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/// <summary>
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/// Reset the bit at the given index.
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/// </summary>
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/// <param name="index">A bit index.</param>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void Reset(int index)
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{
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Set(index, false);
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}
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/// <summary>
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/// Set a bit value at the given index.
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/// </summary>
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/// <param name="index">A bit index.</param>
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/// <param name="value">The new bit value.</param>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private void Set(int index, bool value)
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{
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byte mask = (byte)(1 << ToBitPosition(index));
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if (value)
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{
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_storage.Span[ToPosition(index)] |= mask;
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}
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else
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{
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_storage.Span[ToPosition(index)] &= (byte)~mask;
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}
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}
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/// <summary>
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/// Reset all bits in the storage.
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/// </summary>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void Reset()
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{
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_storage.Span.Clear();
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}
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}
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}
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