Revert "bcat ipc (#4446)" (#4801)

This reverts commit 4250732353.

src/Ryujinx.HLE/HOS/Services/Bcat/ServiceCreator/IDeliveryCacheDirectoryService.cs

@@ -0,0 +1,65 @@
+using LibHac;
+using LibHac.Bcat;
+using LibHac.Common;
+using Ryujinx.Common;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.HLE.HOS.Services.Bcat.ServiceCreator
+{
+    class IDeliveryCacheDirectoryService : DisposableIpcService
+    {
+        private SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheDirectoryService> _base;
+
+        public IDeliveryCacheDirectoryService(ref SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheDirectoryService> baseService)
+        {
+            _base = SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheDirectoryService>.CreateMove(ref baseService);
+        }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            if (isDisposing)
+            {
+                _base.Destroy();
+            }
+        }
+
+        [CommandCmif(0)]
+        // Open(nn::bcat::DirectoryName)
+        public ResultCode Open(ServiceCtx context)
+        {
+            DirectoryName directoryName = context.RequestData.ReadStruct<DirectoryName>();
+
+            Result result = _base.Get.Open(ref directoryName);
+
+            return (ResultCode)result.Value;
+        }
+
+        [CommandCmif(1)]
+        // Read() -> (u32, buffer<nn::bcat::DeliveryCacheDirectoryEntry, 6>)
+        public ResultCode Read(ServiceCtx context)
+        {
+            ulong bufferAddress = context.Request.ReceiveBuff[0].Position;
+            ulong bufferLen = context.Request.ReceiveBuff[0].Size;
+
+            using (var region = context.Memory.GetWritableRegion(bufferAddress, (int)bufferLen, true))
+            {
+                Result result = _base.Get.Read(out int entriesRead, MemoryMarshal.Cast<byte, DeliveryCacheDirectoryEntry>(region.Memory.Span));
+
+                context.ResponseData.Write(entriesRead);
+
+                return (ResultCode)result.Value;
+            }
+        }
+
+        [CommandCmif(2)]
+        // GetCount() -> u32
+        public ResultCode GetCount(ServiceCtx context)
+        {
+            Result result = _base.Get.GetCount(out int count);
+
+            context.ResponseData.Write(count);
+
+            return (ResultCode)result.Value;
+        }
+    }
+}