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https://github.com/Ryujinx/Ryujinx.git
synced 2024-08-20 07:38:42 +02:00
69 lines
1.4 KiB
C#
69 lines
1.4 KiB
C#
using Ryujinx.Graphics.Gpu.Memory;
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using System;
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namespace Ryujinx.Graphics.Vic
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{
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class StructUnpacker
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{
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private MemoryAccessor _vmm;
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private ulong _position;
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private ulong _buffer;
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private int _buffPos;
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public StructUnpacker(MemoryAccessor vmm, ulong position)
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{
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_vmm = vmm;
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_position = position;
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_buffPos = 64;
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}
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public int Read(int bits)
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{
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if ((uint)bits > 32)
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{
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throw new ArgumentOutOfRangeException(nameof(bits));
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}
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int value = 0;
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while (bits > 0)
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{
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RefillBufferIfNeeded();
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int readBits = bits;
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int maxReadBits = 64 - _buffPos;
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if (readBits > maxReadBits)
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{
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readBits = maxReadBits;
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}
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value <<= readBits;
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value |= (int)(_buffer >> _buffPos) & (int)(0xffffffff >> (32 - readBits));
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_buffPos += readBits;
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bits -= readBits;
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}
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return value;
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}
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private void RefillBufferIfNeeded()
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{
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if (_buffPos >= 64)
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{
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_buffer = _vmm.ReadUInt64(_position);
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_position += 8;
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_buffPos = 0;
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}
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}
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}
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} |