From c86aacde76b5f8e503e2b412385c8491ecc86b3b Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Mon, 3 Dec 2018 00:38:47 -0200
Subject: NVDEC implementation using FFmpeg (#443)

* Initial nvdec implementation using FFmpeg

* Fix swapped channels on the video decoder and the G8R8 texture format

* Fix texture samplers not being set properly (regression)

* Rebased

* Remove unused code introduced on the rebase

* Add support for RGBA8 output format on the video image composer

* Correct spacing

* Some fixes for rebase and other tweaks

* Allow size mismatch on frame copy

* Get rid of GetHostAddress calls on VDec
---
 Ryujinx.Graphics/VDec/VpxBitStreamWriter.cs | 38 +++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Ryujinx.Graphics/VDec/VpxBitStreamWriter.cs

(limited to 'Ryujinx.Graphics/VDec/VpxBitStreamWriter.cs')

diff --git a/Ryujinx.Graphics/VDec/VpxBitStreamWriter.cs b/Ryujinx.Graphics/VDec/VpxBitStreamWriter.cs
new file mode 100644
index 00000000..0c712d2c
--- /dev/null
+++ b/Ryujinx.Graphics/VDec/VpxBitStreamWriter.cs
@@ -0,0 +1,38 @@
+using System.IO;
+
+namespace Ryujinx.Graphics.VDec
+{
+    class VpxBitStreamWriter : BitStreamWriter
+    {
+        public VpxBitStreamWriter(Stream BaseStream) : base(BaseStream) { }
+
+        public void WriteU(int Value, int ValueSize)
+        {
+            WriteBits(Value, ValueSize);
+        }
+
+        public void WriteS(int Value, int ValueSize)
+        {
+            bool Sign = Value < 0;
+
+            if (Sign)
+            {
+                Value = -Value;
+            }
+
+            WriteBits((Value << 1) | (Sign ? 1 : 0), ValueSize + 1);
+        }
+
+        public void WriteDeltaQ(int Value)
+        {
+            bool DeltaCoded = Value != 0;
+
+            WriteBit(DeltaCoded);
+
+            if (DeltaCoded)
+            {
+                WriteBits(Value, 4);
+            }
+        }
+    }
+}
\ No newline at end of file
-- 
cgit v1.2.3