ryujinx/Ryujinx.HLE/HOS/Services/Nv/Host1xContext.cs

using Ryujinx.Graphics.Gpu;
using Ryujinx.Graphics.Gpu.Memory;
using Ryujinx.Graphics.Host1x;
using Ryujinx.Graphics.Nvdec;
using Ryujinx.Graphics.Vic;
using System;

namespace Ryujinx.HLE.HOS.Services.Nv
{
    class Host1xContext : IDisposable
    {
        public MemoryManager Smmu { get; }
        public NvMemoryAllocator MemoryAllocator { get; }
        public Host1xDevice Host1x { get;}

        public Host1xContext(GpuContext gpu, long pid)
        {
            MemoryAllocator = new NvMemoryAllocator();
            Host1x = new Host1xDevice(gpu.Synchronization);
            Smmu = gpu.CreateMemoryManager(pid);
            var nvdec = new NvdecDevice(Smmu);
            var vic = new VicDevice(Smmu);
            Host1x.RegisterDevice(ClassId.Nvdec, nvdec);
            Host1x.RegisterDevice(ClassId.Vic, vic);

            nvdec.FrameDecoded += (FrameDecodedEventArgs e) =>
            {
                // FIXME:
                // Figure out what is causing frame ordering issues on H264.
                // For now this is needed as workaround.
                if (e.CodecId == CodecId.H264)
                {
                    vic.SetSurfaceOverride(e.LumaOffset, e.ChromaOffset, 0);
                }
                else
                {
                    vic.DisableSurfaceOverride();
                }
            };
        }

        public void Dispose()
        {
            Host1x.Dispose();
        }
    }
}