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

1 files changed, 34 insertions, 0 deletions

diff --git a/Ryujinx.Graphics/VDec/H264ParameterSets.cs b/Ryujinx.Graphics/VDec/H264ParameterSets.cs
new file mode 100644
index 00000000..f242f0f2
--- /dev/null
+++ b/Ryujinx.Graphics/VDec/H264ParameterSets.cs
@@ -0,0 +1,34 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Graphics.VDec
+{
+    [StructLayout(LayoutKind.Sequential, Pack = 4)]
+    struct H264ParameterSets
+    {
+        public int  Log2MaxPicOrderCntLsbMinus4;
+        public bool DeltaPicOrderAlwaysZeroFlag;
+        public bool FrameMbsOnlyFlag;
+        public int  PicWidthInMbs;
+        public int  PicHeightInMapUnits;
+        public int  Reserved6C;
+        public bool EntropyCodingModeFlag;
+        public bool BottomFieldPicOrderInFramePresentFlag;
+        public int  NumRefIdxL0DefaultActiveMinus1;
+        public int  NumRefIdxL1DefaultActiveMinus1;
+        public bool DeblockingFilterControlPresentFlag;
+        public bool RedundantPicCntPresentFlag;
+        public bool Transform8x8ModeFlag;
+        public int  Unknown8C;
+        public int  Unknown90;
+        public int  Reserved94;
+        public int  Unknown98;
+        public int  Reserved9C;
+        public int  ReservedA0;
+        public int  UnknownA4;
+        public int  ReservedA8;
+        public int  UnknownAC;
+        public long Flags;
+        public int  FrameNumber;
+        public int  FrameNumber2;
+    }
+}
\ No newline at end of file