From d1604aa762a3f669a3fecff0a30b7360399954bc Mon Sep 17 00:00:00 2001
From: Ac_K <Acoustik666@gmail.com>
Date: Tue, 12 Oct 2021 22:55:57 +0200
Subject: nvdec: Adding Vp8 codec support (#2707)

* first try

* second try

* working update

* Final impl

* Fixes nits

* Fix everything

* remove leftover

* Update FFmpegContext.cs

* Update Surface.cs

* Addresses gdkchan feedback

* bool not byte

* Addresses gdkchan feedback
---
 Ryujinx.Graphics.Nvdec.H264/H264BitStreamWriter.cs | 121 ---------------------
 1 file changed, 121 deletions(-)
 delete mode 100644 Ryujinx.Graphics.Nvdec.H264/H264BitStreamWriter.cs

(limited to 'Ryujinx.Graphics.Nvdec.H264/H264BitStreamWriter.cs')

diff --git a/Ryujinx.Graphics.Nvdec.H264/H264BitStreamWriter.cs b/Ryujinx.Graphics.Nvdec.H264/H264BitStreamWriter.cs
deleted file mode 100644
index c0e2357d..00000000
--- a/Ryujinx.Graphics.Nvdec.H264/H264BitStreamWriter.cs
+++ /dev/null
@@ -1,121 +0,0 @@
-using System;
-using System.Numerics;
-
-namespace Ryujinx.Graphics.Nvdec.H264
-{
-    struct H264BitStreamWriter
-    {
-        private const int BufferSize = 8;
-
-        private readonly byte[] _workBuffer;
-
-        private int _offset;
-        private int _buffer;
-        private int _bufferPos;
-
-        public H264BitStreamWriter(byte[] workBuffer)
-        {
-            _workBuffer = workBuffer;
-            _offset = 0;
-            _buffer = 0;
-            _bufferPos = 0;
-        }
-
-        public void WriteBit(bool value)
-        {
-            WriteBits(value ? 1 : 0, 1);
-        }
-
-        public void WriteBits(int value, int valueSize)
-        {
-            int valuePos = 0;
-
-            int remaining = valueSize;
-
-            while (remaining > 0)
-            {
-                int copySize = remaining;
-
-                int free = GetFreeBufferBits();
-
-                if (copySize > free)
-                {
-                    copySize = free;
-                }
-
-                int mask = (1 << copySize) - 1;
-
-                int srcShift = (valueSize - valuePos) - copySize;
-                int dstShift = (BufferSize - _bufferPos) - copySize;
-
-                _buffer |= ((value >> srcShift) & mask) << dstShift;
-
-                valuePos += copySize;
-                _bufferPos += copySize;
-                remaining -= copySize;
-            }
-        }
-
-        private int GetFreeBufferBits()
-        {
-            if (_bufferPos == BufferSize)
-            {
-                Flush();
-            }
-
-            return BufferSize - _bufferPos;
-        }
-
-        public void Flush()
-        {
-            if (_bufferPos != 0)
-            {
-                _workBuffer[_offset++] = (byte)_buffer;
-
-                _buffer = 0;
-                _bufferPos = 0;
-            }
-        }
-
-        public void End()
-        {
-            WriteBit(true);
-
-            Flush();
-        }
-
-        public Span<byte> AsSpan()
-        {
-            return new Span<byte>(_workBuffer).Slice(0, _offset);
-        }
-
-        public void WriteU(uint value, int valueSize) => WriteBits((int)value, valueSize);
-        public void WriteSe(int value) => WriteExpGolombCodedInt(value);
-        public void WriteUe(uint value) => WriteExpGolombCodedUInt(value);
-
-        private void WriteExpGolombCodedInt(int value)
-        {
-            int sign = value <= 0 ? 0 : 1;
-
-            if (value < 0)
-            {
-                value = -value;
-            }
-
-            value = (value << 1) - sign;
-
-            WriteExpGolombCodedUInt((uint)value);
-        }
-
-        private void WriteExpGolombCodedUInt(uint value)
-        {
-            int size = 32 - BitOperations.LeadingZeroCount(value + 1);
-
-            WriteBits(1, size);
-
-            value -= (1u << (size - 1)) - 1;
-
-            WriteBits((int)value, size - 1);
-        }
-    }
-}
\ No newline at end of file
-- 
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