mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-08-19 23:28:42 +02:00
* 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>
124 lines
4.1 KiB
C#
124 lines
4.1 KiB
C#
using System;
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using System.Diagnostics.CodeAnalysis;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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namespace Ryujinx.Common.Memory
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{
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/// <summary>
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/// Represents an array of unmanaged resources.
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/// </summary>
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/// <typeparam name="T">Array element type</typeparam>
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public unsafe struct ArrayPtr<T> : IEquatable<ArrayPtr<T>>, IArray<T> where T : unmanaged
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{
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private IntPtr _ptr;
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/// <summary>
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/// Null pointer.
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/// </summary>
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public static ArrayPtr<T> Null => new ArrayPtr<T>() { _ptr = IntPtr.Zero };
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/// <summary>
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/// True if the pointer is null, false otherwise.
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/// </summary>
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public bool IsNull => _ptr == IntPtr.Zero;
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/// <summary>
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/// Number of elements on the array.
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/// </summary>
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public int Length { get; }
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/// <summary>
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/// Gets a reference to the item at the given index.
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/// </summary>
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/// <remarks>
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/// No bounds checks are performed, this allows negative indexing,
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/// but care must be taken if the index may be out of bounds.
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/// </remarks>
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/// <param name="index">Index of the element</param>
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/// <returns>Reference to the element at the given index</returns>
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public ref T this[int index] => ref Unsafe.AsRef<T>((T*)_ptr + index);
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/// <summary>
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/// Creates a new array from a given reference.
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/// </summary>
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/// <remarks>
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/// For data on the heap, proper pinning is necessary during
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/// use. Failure to do so will result in memory corruption and crashes.
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/// </remarks>
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/// <param name="value">Reference of the first array element</param>
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/// <param name="length">Number of elements on the array</param>
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public ArrayPtr(ref T value, int length)
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{
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_ptr = (IntPtr)Unsafe.AsPointer(ref value);
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Length = length;
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}
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/// <summary>
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/// Creates a new array from a given pointer.
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/// </summary>
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/// <param name="ptr">Array base pointer</param>
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/// <param name="length">Number of elements on the array</param>
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public ArrayPtr(T* ptr, int length)
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{
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_ptr = (IntPtr)ptr;
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Length = length;
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}
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/// <summary>
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/// Creates a new array from a given pointer.
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/// </summary>
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/// <param name="ptr">Array base pointer</param>
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/// <param name="length">Number of elements on the array</param>
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public ArrayPtr(IntPtr ptr, int length)
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{
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_ptr = ptr;
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Length = length;
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}
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/// <summary>
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/// Splits the array starting at the specified position.
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/// </summary>
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/// <param name="start">Index where the new array should start</param>
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/// <returns>New array starting at the specified position</returns>
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public ArrayPtr<T> Slice(int start) => new ArrayPtr<T>(ref this[start], Length - start);
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/// <summary>
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/// Gets a span from the array.
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/// </summary>
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/// <returns>Span of the array</returns>
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public Span<T> ToSpan() => Length == 0 ? Span<T>.Empty : MemoryMarshal.CreateSpan(ref this[0], Length);
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/// <summary>
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/// Gets the array base pointer.
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/// </summary>
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/// <returns>Base pointer</returns>
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public T* ToPointer() => (T*)_ptr;
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public override bool Equals(object obj)
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{
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return obj is ArrayPtr<T> other && Equals(other);
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}
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public bool Equals([AllowNull] ArrayPtr<T> other)
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{
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return _ptr == other._ptr && Length == other.Length;
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}
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public override int GetHashCode()
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{
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return HashCode.Combine(_ptr, Length);
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}
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public static bool operator ==(ArrayPtr<T> left, ArrayPtr<T> right)
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{
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return left.Equals(right);
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}
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public static bool operator !=(ArrayPtr<T> left, ArrayPtr<T> right)
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{
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return !(left == right);
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}
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}
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}
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